CN101238648B - Method and device for broadcast and multicast from cellular wireless networks - Google Patents

Abstract

Multiple-In Multiple-Out (MIMO) techniques are used to increase spectral efficiency of a cellular single frequency network. In some embodiments with single transmit antenna per cell, multiple data streams are transmitted from multiple cells, one data stream per set of transmit antennae. The mapping of streams to antenna sets is permuted in time. In this way, user equipment devices (UEs) at cell edges benefit from MIMO, and UEs near cell centers benefit from high carrier-to-interference (C/I) ratio of the signal. In some embodiments, each stream is concurrently transmitted on base layer of a hierarchically modulated signal from one set, and on enhancement layer of a hierarchically modulated signal from another set. The mapping of sets to streams is permuted in time. The UEs at cell edges benefit from MIMO, and the UEs near cell centers benefit from the high C/I to decode both streams from the base and enhancement layers.

Description

Be used for broadcasting and the method and apparatus of multicast from the cellular radio electric network

Advocate priority according to 35 U.S.C § 119

It is 60/690,622 provisional application case for the sequence number of " Transmit DiversityFor E-MBMS " that present application for patent advocates to have precedence over the title of filing an application on June 14th, 2005.Described provisional application case transfers the assignee of the application's case, and just is incorporated herein clearly as it is set forth in this article fully with application mode, comprising whole graphic and forms interior.

Technical field

In general, the present invention relates to telecommunications, and more particularly, relate to for broadcasting from the cellular radio electric network and method, equipment and the goods of multicast.

Background technology

People expect that Modern Communication System is that various application (comprising speech and market demand) provide reliable transfer of data.Under the environment of point-to-multipoint delivery, known communication system is based on frequency division multiple access (FDMA), time division multiple access (TDMA), code division multiple access (CDMA) and other multiple access access communications scheme possibly.

Cdma system can be supported one or more CDMA standards through design: for example, and (1) " TIA/EIA-95 travelling carriage-be used for the base station compatibility standard of dual mode wideband spread spectrum honeycomb fashion mobile system " (described standard and its enhancement mode revision version can be described as " IS-95 standard "); (2) " the recommendation minimum standard of TIA/EIA-98-C dual mode wideband spread spectrum honeycomb fashion travelling carriage " (it also can be described as " IS-98 standard "); (3) standard of being initiated by " third generation partnership project " alliance (3GPP) by name, described standard is included in one group comprising (" W-CDMA standard ") in the file that is called 3G TS 25.211,3G TS 25.212,3G TS 25.213 and 3G TS 25.214; (4) standard of being initiated by the alliance that is called " third generation partnership project 2 (3GPP2) ", described standard is included in one group comprising in the file of " C.S0002-APhysical Layer Standard for cdma2000 Spread Spectrum Systems ", " C.S0005-A UpperLayer (Layer 3) Signaling Standard for cdma2000 Spread Spectrum Systems " (it is referred to as " cdma 2000 standards "); (5) 1 * EV-DO standards " TIA/EIA/IS-856 cdma2000 high rate packet data air interface specification "; And (6) some other standards.More than cited standard incorporated herein by reference just as being set forth fully in this article, comprising annex, appendix and other adjuncts interior.

Manufacturer adds performance enhancement characteristic in order to together use with the cellular radio electric network constantly for wireless user equipment (UE) device, for example, and cellular phone.For example, a lot of UE comprise that resolution is enough to show the display screen of video image.

By the ability that its UE strengthens, the user is to becoming interested by receiving television broadcasting.As long as demand is arranged, just have supply.It should be noted that and possessed at present the cellular infrastructure that can launch to UE.Therefore, the operator of cellular network will be because providing the broadcast or multicast service to make a profit to its subscriber.Except the more conventional service that these networks provide, live TV, film, motion montage, talk show all can be carried out broadcast or multicast from the cellular radio electric network.In fact, this can be similar to UE cable or satellite channel directly are provided.

Multicast broadcast multimedia service (MBMS) is the broadcast service that can provide by having global system for mobile communications (GSM) and Universal Mobile Telecommunications System (UMTS) cellular network now.MBMS and enhancement mode version (E-MBMS) thereof just carry out standardization in each 3GPP (third generation partnership project) group.

Down link (DL) capacity is the important performance feature of cellular system.Can come (for example) more broadcast/multi broadcast channel to be provided and to improve the quality of broadcasting transmitting to the subscriber with the downlink capacity that increases.For the available fixed frequency scope of cellular system transmission, capacity depends on spectrum efficiency.If the availability of electromagnetic spectrum is limited, therefore expectation increases the spectrum efficiency of cellular system, comprising the spectrum efficiency of broadcasting and multicast.For avoiding upgrading the cost that is associated with infrastructure, be desirably in the spectrum efficiency that increases existing infrastructure in the situation of carrying out limited change or need not to change.

A lot of base transceiver stations (BTS) of existing celluler radio website (node-b) all have the single transmitting antenna for Single Frequency Network (SFN) operation.Therefore, need to increase the SFN broadcasting of cellular network and multicast spectrum efficiency in the technique and need not to install at existing honeycomb fashion website place the method and apparatus of a plurality of antennas.

Summary of the invention

Embodiments disclosed herein have solved above-mentioned needs by providing a kind of for the method from a plurality of sector transmission data of cellular communications system.Described method comprises at least one transmitting antenna from each sector of a plurality of sectors is assigned to a transmission antenna group in a plurality of L transmission antenna group that wherein L is the integer greater than 1.Each transmission antenna group all comprises at least one transmitting antenna of described cellular communications system.Described method also comprise with data placement become a plurality of L data flow (for example, be divided into several stream, or keep described flow point from).During at least one period 1, each data flow is assigned to different transmission antenna group in L the transmission antenna group, thereby causes data flow to be distributed the first time in transmission antenna group.Described method also comprises: for each transmission antenna group in described a plurality of L transmission antenna group, be assigned to the carrier wave of the data stream modulates first frequency of described transmission antenna group during being used in described at least one period 1 during described at least one period 1.Described method further comprises: during described at least one period 1, by the transmitting antenna in a plurality of L transmission antenna group with described carrier transmit to a plurality of receivers, so that the transmitting antenna of each transmission antenna group emission needle during described at least one period 1 is assigned to the data flow of described each transmission antenna group to described at least one period 1.

In one embodiment, cellular communications system comprises radio network controller and a plurality of sector.Each sector has at least one transmitting antenna and at least one base transceiver station.Described radio network controller is configured to implement the following:

1. will be assigned to from least one transmitting antenna of each sector in a plurality of sectors the transmission antenna group (wherein L is the integer greater than 1) in a plurality of L transmission antenna group, so that each transmission antenna group in described a plurality of L the transmission antenna group all has at least one transmitting antenna of described cellular communications system;

2. data placement is become a plurality of L data flow;

3. at least one period 1, each data flow is assigned to the different transmit antennas group of a described L transmission antenna group;

4. for each transmission antenna group in described a plurality of L transmission antenna group, cause described a plurality of sector during being used in described at least one period 1 during described at least one period 1, to be assigned to the carrier wave of the data stream modulates first frequency of described each transmission antenna group; And

5. cause described a plurality of sector during described at least one period 1 by the described transmitting antenna in described a plurality of L transmission antenna group with described carrier transmit to a plurality of receivers, so that the transmitting antenna of each transmission antenna group emission needle during described at least one period 1 is assigned to the data flow of described each transmission antenna group to described at least one period 1.

In one embodiment, machine-readable medium can be the processor storage instruction of the radio network controller of the cellular communications system with a plurality of sectors with transmitting antenna.When being carried out by described processor, described instruction is disposed described radio network controller to implement the following:

1. will be assigned to from least one transmitting antenna of each sector in described a plurality of sectors the transmission antenna group (wherein L is the integer greater than 1) in a plurality of L transmission antenna group, each transmission antenna group has at least one transmitting antenna of cellular communications system;

2. data placement is become a plurality of L data flow;

3. at least one period 1, each data flow is assigned to the different transmit antennas group of a described L transmission antenna group;

4. for each transmission antenna group in described a plurality of L transmission antenna group, cause described a plurality of sector to be used in the carrier wave that is assigned to the data stream modulates first frequency of described each transmission antenna group during described at least one period 1 for described at least one period 1;

5. cause described a plurality of sector during described at least one period 1 by the described transmitting antenna in described a plurality of L transmission antenna group with described carrier transmit to a plurality of receivers, so that the transmitting antenna of each transmission antenna group emission needle during described at least one period 1 is assigned to the data flow of described each transmission antenna group to described at least one period 1.

In one embodiment, be provided for the method for a plurality of sector transmission data from cellular communications system.Described method comprises the steps:

1. at least one transmitting antenna with each sector is assigned in the first transmission antenna group or the second transmission antenna group, and each antenna sets of described first and second transmission antenna group all has at least one transmitting antenna;

2. data placement is become the first data flow and the second data flow;

3. the carrier wave of given frequency carried out hierarchical modulation to obtain to have the first signal of first foundation layer and the first enhancement layer;

4. described carrier wave is carried out hierarchical modulation to obtain to have the secondary signal of the second basal layer and the second enhancement layer;

5. launch described first signal by each transmitting antenna in described the first transmission antenna group; And

6. launch described secondary signal by each antenna in described the second transmission antenna group.

In described method, implement the step of hierarchical modulation so that the first foundation layer carries the information of the first data flow, the first enhancement layer carries the information of the second data flow, and the second basal layer carries the information of the second data flow, and the second enhancement layer carries the information of the first data flow.

In one embodiment, cellular communications system has a radio network controller and a plurality of sector.Each sector all has at least one transmitting antenna.Described radio network controller is configured to implement the following:

1. at least one transmitting antenna with each sector in described a plurality of sectors is assigned in the first transmission antenna group or the second transmission antenna group, and each antenna sets of described first and second transmission antenna group all comprises at least one transmitting antenna;

2. data placement is become the first data flow and the second data flow;

3. cause the carrier wave to given frequency to carry out the first signal (for example, send order so that suitable sector implemented this kind modulation) of hierarchical modulation to obtain to have first foundation layer and the first enhancement layer;

4. cause described carrier wave is carried out the secondary signal (for example, send order so that suitable sector implemented this kind modulation) of hierarchical modulation to obtain to have the second basal layer and the second enhancement layer;

5. cause by each transmitting antenna in the first transmission antenna group and launch described first signal (for example, sending order so that this kind transmission is implemented in suitable sector); And

6. cause by each transmitting antenna in the second transmission antenna group and launch described secondary signal (for example, sending order so that this kind transmission is implemented in suitable sector);

In described system, the first foundation layer carries the information of the first data flow, and the first enhancement layer carries the information of the second data flow, and the second basal layer carries the information of the second data flow, and the second enhancement layer carries the information of the first data flow.

In one embodiment, machine-readable medium is at least one processor storage instruction of the radio network controller of cellular communications system.Described cellular communications system comprises a plurality of sectors, and each sector has at least one transmitting antenna.When being carried out by described at least one processor, described instruction is disposed described radio network controller to implement the following:

1. at least one transmitting antenna with each sector is assigned in the first transmission antenna group or the second transmission antenna group, and each transmission antenna group all comprises at least one transmitting antenna;

2. data placement is become the first data flow and the second data flow;

3. cause the carrier wave to given frequency to carry out hierarchical modulation to obtain to have the first signal of first foundation layer and the first enhancement layer;

4. cause described carrier wave is carried out hierarchical modulation to obtain to have the secondary signal of the second basal layer and the second enhancement layer;

5. cause by each transmitting antenna in described the first transmission antenna group and transmit described first signal; And

6. cause by each transmitting antenna in described the second transmission antenna group and transmit described secondary signal.

In described embodiment, the first foundation layer carries the information of the first data flow, and the first enhancement layer carries the information of the second data flow, and the second basal layer carries the information of the second data flow, and the second enhancement layer carries the information of the first data flow.

In one embodiment, be provided for the method for a plurality of sector transmission data in the cellular communications system, each of wherein said sector all has at least one transmitting antenna.Described method comprises the steps:

1. data placement is become a plurality of data flow;

With the carrier wave of the given frequency of described a plurality of data stream modulates to obtain first signal and secondary signal, to use the broadcasting of multiple-input, multiple-output (MTMO) space diversity reception to communicate from the data of a plurality of sectors;

3. emission comes the first signal of each sector in first group of sector of described cellular communications system; And

4. emission is from the secondary signal of each sector in second group of sector of described cellular communications system.

In one embodiment, the cellular radio electric network has radio network controller and a plurality of residential quarter.Each residential quarter all has at least one transmitting antenna.Described radio network controller is configured to implement the following:

1. data placement is become a plurality of data flow;

2. cause described a plurality of residential quarter with the carrier wave of the given frequency of described a plurality of data stream modulates to obtain first signal and secondary signal, to use the broadcasting of multiple-input, multiple-output (MTMO) space diversity reception to communicate from the data of described a plurality of residential quarters;

3. cause described a plurality of residential quarters emission from the first signal of each residential quarter in first group of residential quarter of described cellular communications system; And

4. cause described a plurality of residential quarters emission from the secondary signal of each residential quarter in second group of residential quarter of described cellular communications system.

In one embodiment, machine-readable medium is at least one processor storage instruction of the radio network controller of cellular radio electric network.Described cellular radio electric network has a plurality of residential quarters, and each residential quarter has at least one transmitting antenna.When being carried out by described at least one processor, described instruction is disposed described radio network controller to implement the following:

1. data placement is become a plurality of data flow;

2. cause described a plurality of residential quarter with the carrier wave of the given frequency of described a plurality of data stream modulates to obtain first signal and secondary signal, to use the broadcasting of multiple-input, multiple-output (MTMO) space diversity reception to communicate from the data of described a plurality of sectors;

3. cause described a plurality of residential quarters emission from the first signal of each residential quarter in first group of residential quarter of described cellular communications system; And

4. cause described a plurality of residential quarters emission from the secondary signal of each residential quarter in second group of residential quarter of described cellular communications system.

In one embodiment, provide a kind of for receiving from the method for the data of cellular communications system transmission.Described method is included in during the one or more cycles very first time and receives first signal at the first antenna place.Described first signal is carried on the first frequency, and comprises by the first data flow of the first physical channel emission and second data flow of launching by the second physical channel.Described the first data flow has the first data during the described one or more cycles very first time, and described the second data flow has the second data during the described one or more cycles very first time.Described method also is included in during the described one or more cycle very first time in the second antenna reception secondary signal.Described secondary signal is carried on the described first frequency equally.Described secondary signal comprises by the first data flow of the 3rd physical channel emission and second data flow of launching by the 4th physical channel.Described method also comprises estimates that the first, second, third and the 4th physical channel is to obtain the first, second, third and the 4th channel estimating.Described method also comprises uses described channel estimating that first and second data flow is separated with in first signal and the secondary signal at least one.

In one embodiment, a kind of wireless user equipment (ue) device for communicating by letter with the base transceiver station of cellular communications system comprises: first and second antenna, the receiver that is coupled to described antenna, program code stored memory and be coupled to the processor of described receiver and described memory.Described receiver was configured to receive first signal at described the first antenna place during the one or more cycles very first time.Described first signal is carried on the first frequency, and comprises by the first data flow of the first physical channel emission and second data flow of launching by the second physical channel.Described the first data flow carries the first data during the described one or more cycles very first time, and described the second data flow carries the second data during the described one or more cycles very first time.Described receiver also is configured to during the described one or more cycles very first time in the second antenna place reception secondary signal.Described secondary signal equally just is carried on the first frequency.Described secondary signal comprises by the first data flow of the 3rd physical channel emission and passed through the second data flow that the 4th physical channel is launched.Described processor is configured to estimate the first, second, third and the 4th physical channel obtaining channel estimating, and uses described channel estimating that first and second data flow is separated with in described first signal and the secondary signal at least one.

In one embodiment, machine-readable medium is the processor storage instruction of the wireless user equipment (ue) device of communicating by letter with cellular communications system.When described instruction was carried out by processor, it can cause described wireless user equipment (ue) device to receive first signal at the first antenna place during the one or more cycles very first time.Described first signal is carried on the first frequency, and comprises by the first data flow of the first physical channel emission and second data flow of launching by the second physical channel.Described the first data flow carries the first data during the described one or more cycles very first time, and described the second data flow carries the second data during the described one or more cycles very first time.Described instruction meeting further causes described wireless user equipment (ue) device to receive secondary signal at the second antenna place from described cellular communications system during the described one or more cycles very first time.Described secondary signal is carried on the described first frequency equally.Described secondary signal comprises by the first data flow of the 3rd physical channel emission and second data flow of launching by the 4th physical channel.Described instruction meeting further causes described wireless user equipment (ue) device to estimate the first, second, third and the 4th physical channel obtaining channel estimating, and uses described channel estimating that first and second data flow is separated with in first and second signal at least one.

A kind of method of the data for receiving the cellular communications system transmission is provided in one embodiment.Described method is included in the first antenna place and receives first signal.Described first signal comprises by the first signal component of the first physical channel emission and the secondary signal component of launching by the second physical channel.Described first signal component has the first foundation layer that carries the first data flow and carries the first enhancement layer of the second data flow.Described secondary signal component comprises the second basal layer that carries the second data flow and the second enhancement layer that carries the first data flow.Described method also is included in the second antenna place and receives secondary signal.Described secondary signal comprises by the 3rd signal component of the 3rd physical channel emission and the 4th signal component of launching by the 4th physical channel.Described the 3rd signal component has the 3rd basal layer that carries described the first data flow and the 3rd enhancement layer that carries described the second data flow.Described the 4th signal component has the 4th basal layer that carries described the second data flow and the 4th enhancement layer that carries described the first data flow.Described method also comprises estimates the described first, second, third and the 4th physical channel to obtain one or more channel estimating, reaches and uses described channel estimating that described first and second signal component is separated.At after separating, decoding is from the first data flow of described first foundation layer, and decoding is from least one the second data flow in the first enhancement layer and the second basal layer.Note, come hierarchical modulation described first, second, third and the 4th signal component with identical carrier frequency.

In one embodiment, the wireless user equipment (ue) device that is used for communicating by letter with the base transceiver station of radio net comprises: first and second reception antenna, receiver, program code stored memory and be coupled to the processor of described receiver and described memory.Described receiver is configured to receive first signal at the first antenna place, reaches in the second antenna place reception secondary signal.Described first signal comprises by the first signal component of the first physical channel emission and the secondary signal component of launching by the second physical channel.Described first signal component has the first foundation layer that carries the first data flow and carries the first enhancement layer of the second data flow.Described secondary signal component has the second basal layer that carries the second data flow and the one or two enhancement layer that carries the first data flow.Described secondary signal comprises by the 3rd signal component of the 3rd physical channel emission and the 4th signal component of launching by the 4th physical channel.Described the 3rd signal component has the 3rd basal layer that carries described the first data flow and the 3rd enhancement layer that carries described the second data flow.Described the 4th signal component has the 4th basal layer that carries described the second data flow and the 4th enhancement layer that carries described the first data flow.Come hierarchical modulation described first, second, third and the 4th signal component with identical carrier frequency.Described processor is configured to estimate that the described first, second, third and the 4th physical channel separates described first and second signal component to obtain channel estimating, to reach with described channel estimating.Described processor further is configured in first data flow of after separating decoding from described first foundation layer, and decoding is from the second data flow of described the first enhancement layer and described the second basal layer.

In one embodiment, machine-readable medium is the processor storage instruction of wireless user equipment (ue) device.When being carried out by described processor, described instruction meeting causes described wireless user equipment (ue) device to reach in the second antenna place reception secondary signal to receive first signal at the first antenna place.Described first signal comprises by the first signal component of the first physical channel emission and the secondary signal component of launching by the second physical channel.Described first signal component has the first foundation layer that carries the first data flow and carries the first enhancement layer of the second data flow.Described secondary signal component has the second basal layer that carries the second data flow and the one or two enhancement layer that carries the first data flow.Described secondary signal comprises by the 3rd signal component of the 3rd physical channel emission and the 4th signal component of launching by the 4th physical channel.Described the 3rd signal component has the 3rd basal layer that carries described the first data flow and the 3rd enhancement layer that carries described the second data flow.Described the 4th signal component has the 4th basal layer that carries described the second data flow and the 4th enhancement layer that carries described the first data flow.Come hierarchical modulation described first, second, third and the 4th signal component with identical carrier frequency.Described instruction meeting further causes described wireless user equipment (ue) device to estimate that the described first, second, third and the 4th physical channel separates described first and second signal component to obtain channel estimating, to reach with described channel estimating.At after separating, described instruction meeting causes described wireless user equipment (ue) device decoding from the first data flow of described first foundation layer, and decoding is from the data flow of described the first enhancement layer and/or described the second basal layer.

In one embodiment, provide a kind of and have the method for the cellular radio electric network of first and second space diversity transmitting antenna for operating in the first residential quarter.Described antenna is space diversity in order to realize MEMO.Described method comprises by described the first antenna the user equipment (ue) device of the first data stream transmission on the first frequency (for example, broadcasting, multicast) to a plurality of and described network service.Described method also comprises by described the second antenna the second data stream transmission on the first frequency to a plurality of user equipment (ue) devices.Described user equipment (ue) device some has a plurality of space diversity reception antennas at least.In this way, use a plurality of emissions and a plurality of reception antenna can realize improving the spectrum efficiency of transmission.

With reference to hereinafter explanation, the graphic and claims of enclosing, can understand better these and other embodiment and aspect of the present invention.

Description of drawings

Fig. 1 shows that the cellular radio electric network uses multiple-input, multiple-output (MIMO) technology to come the high-order calcspar that transmits to user equipment (ue) device according to an embodiment of the invention;

Fig. 2 shows the according to an embodiment of the invention high-order calcspar of the selected assembly of the radio network controller of Fig. 1 network;

Fig. 3 is the high-order calcspar that shows the selected assembly that shows according to an embodiment of the invention Fig. 1 user equipment (ue) device;

Fig. 4 shows according to an embodiment of the invention the high-order calcspar that comes another cellular radio electric network of transmitting to user equipment (ue) device with MIMO and time division multiplexing/displacement;

Fig. 5 is the according to an embodiment of the invention time division multiplexing in Fig. 4 network/displacement graphic of graphic extension;

Fig. 6 shows that another cellular radio electric network according to an embodiment of the invention comes the high-order calcspar that transmits to user equipment (ue) device with MIMO and hierarchical modulation; And

Fig. 7 is the according to an embodiment of the invention time division multiplexing in Fig. 6 network/displacement graphic of graphic extension.

Embodiment

In presents, wording " embodiment ", " modification " and similar expression are to be used to refer to specific equipment, process or goods, and may not refer to identical equipment, process or goods.Therefore, " embodiment " (or similar expression) of being used in a place or the context can refer to specific equipment, process or goods; Different local identical or similar expression can refer to different equipment, process or goods.Express " alternate embodiment " and similar phrase and be one of them that is used to refer to some different possible embodiment.The quantity of possible embodiment may not be confined to two or arbitrary other quantity.

Wording " exemplary " is used to refer to " as example, example or understanding " in this article.The arbitrary embodiment that is illustrated as " exemplary " herein may not be interpreted as better or favourable than other embodiment.Whole embodiment as set forth in the specification all for offering the person of ordinary skill in the field in order to make or use exemplary embodiments of the present invention; and it also non-limitingly awards legal protection scope of the present invention, and described scope is defined by claims and equivalent thereof.

One " group " is to mean a product item or a plurality of product item.Therefore, a transmission antenna group can comprise a transmitting antenna or a plurality of transmitting antenna.

Base transceiver station (BTSs) and base station controller (BSC) are the parts that is called the network of " radio net ", " RN ", " access network " or " AN ".Also base station controller can be called radio network controller or " RNC ".Radio net can be UTRAN or UMTS terrestrial radio access network.Described radio net can be carried packet between a plurality of user equipment (ue) devices.Described radio net can further be connected to the additional networks beyond the described radio net, for example, company's Intranet, internet or conventional PSTN (" PSTN "), and can between each user equipment (ue) device and described external network, carry packet.

" Single Frequency Network " or " SFN " is the radio net of an operand reflector on same frequency.For avoiding or reduce disturbance, can synchronously described several reflectors.Therefore, described several reflectors send out identical signal.As hereinafter setting forth in further detail, Single Frequency Network also can be configured in a plurality of data flow of same frequency emission, all different reflector group emissions from described network of each data flow.

If transmit power budget is identical, then multiple-input, multiple-output (MIMO) technology can realize the raising of wireless communication spectrum efficient.MIMO uses a plurality of space diversity transmitting antennas at the transmitting entity place, and uses a plurality of spatial diversity antennas at the receiver place.Consider two transmitting antenna N _{T, 1}And N _{T, 2}And two reception antenna N _{R, 1}And N _{R, 2}Basic example, have four used physical transmission channel: N _{T, 1}With N _{R, 1}Between CH _1,1, N _{T, 1}With N _{R, 2}Between CH _1,2, N _{T, 2}With N _{R, 1}Between CH _2,1, N _{T, 2}With N _{R, 2}Between CH _2,2(symbol CH _{I, j}Corresponding to transmitting antenna N _{T, i}With reception antenna N _{R, j}Between channel.) each channel of these channels is subject to the impact of some channel conditions, for example, delay, interference, noise, multipath/decline, frequency dispersion and distortion.Owing to receive and the space diversity of transmitting antenna, so for each channels of these channels, the combined effect of these conditions is normally not identical.

In presents, corresponding to channel CH _{I, j}Channel coefficients be called as h _{I, j}Expression N _TIndividual transmitting antenna and N _RThe channel matrix H of whole channels may be defined as follows between the individual reception antenna:

$H=\left[\begin{array}{cccccc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2006800286820E00031.png,S2006800286820E00051.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2006800286820E00031.png,S2006800286820E00051.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}& .& .& .& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2006800286820E00031.png,S2006800286820E00051.png"\; state="\{\{state\}\}">h</figure-callout>}}_{{1,N}_T}\\ h_{2,1}& h_{\mathrm{2,2}}& .& .& .& h_{{2,N}_T}\\ .& .& .& .& .& .\\ .& .& .& .& .& .\\ .& .& .& .& .& .\\ h_{N_{R,1}}& h_{N_{R,2}}& .& .& .& h_{N_R,N_T}\end{array}\right]$

Can estimate channel coefficients h _{I, j}Estimation to channel matrix H is provided.Note each coefficient h _{I, j}May not be simple multiplication coefficient, but can include the whole factors that affect associated channel.

The simple scenario of considering two transmitting antennas and two reception antennas (that is to say N _T=2 and N _R=2), wherein TS is flowed in the first emission ₁The first emission stream of (on given frequency F) is from N _{T, 1}Emission, and second TS ₂From N _{T, 2}Emission.At receiver-side, first receives stream RS ₁Be received in N _{R, 1}Place, and the second reception stream R _{S, 2}Be received in N _{R, 2}The place.Described two reception streams can be expressed as:

RS ₁=TS ₁* h _1,1+ TS ₂* h _2,1, and

RS ₂＝TS ₁*h _1，2+TS ₂*h _2，2.

Owing to possess channel coefficients h _1,2, h _1,2, h _2,1And h _2,2Estimation, so can separate at described receiver place described two emission stream TS ₁And TS ₂Provide a kind of for the method for transmitting antenna, reception antenna and a plurality of streams of data stream separation of a greater number like the linear algebra technology type.This has more detailed explanation in the literature, be 11/009 comprising (for example) commonly assigned sequence number, 200 title is the U.S. patent application case of " Data Transmission With Spatial Spreadingin a Mimo Communication System ", No. 2005/0157805 file.Can be 11/008 referring to commonly assigned sequence number also, 865 U.S. patent application case, commonly assigned title are the U.S. patent application case of " Spatial Spreading in a Multi-Antenna Communication System ", the 11/020th, No. 888 file; And commonly assigned sequence number is 11/020,888 title is the U.S. patent application case of " Pilot Transmission and ChannelEstimation for MISO and MIMO Receivers in a Multi-Antenna System ", the 2005/0195763rd file.

In the above discourse, suppose to broadcast each emission stream from individual antenna.Also can be from stream of a plurality of transmitting antenna broadcasting.Under latter event, we can be with each channel coefficients h _{I, j}Be treated as stream TS _iBe emitted to the coefficient from the transmission channel of i group antenna of reception antenna (perhaps a winding receive antenna) j.The analyzing and processing of latter event is similar to the analyzing and processing of the situation that an emission is flowed to every transmitting antenna.

Open circuit MEMO technology can be used as the extra selection of the spectrum efficiency that increases honeycomb fashion SFN broadcasting and multicast.Because MIMO uses a plurality of transmitting antennas, so the mode of a kind of MIMO of use is exactly a plurality of streams of a plurality of antenna transmissions from same website or sector (" residential quarter ").

In the SFN for broadcasting disposed, the received signal to noise ratio at UE place (SNR) may be very high; From the macrocell budget that is 2800 meters, for 95% user, SNR is usually above 14dB for site distance.Some system simulation demonstration, in 1 * 1 disposes, the coverage for 95%, the SFN spectrum efficiency of E-MBMS is 1.2bps/Hz.If have a plurality of emissions and reception antenna, the SNR that then this kind is high can make it possible to the extra selection as E-MBMS with open circuit (not feedback) MIMO.

We will use following symbol in the following discussion:

The quantity of S=emission stream (Tx)

N=residential quarter (sector) quantity

N _TThe number of transmission antennas of=every residential quarter; And

N _RThe reception of=every residential quarter (Rx) antenna amount

Originally, let us hypothesis

S＝min(N×N _T，N _R)＞1

Fig. 1 shows honeycomb fashion single-frequency radio net 105, and it comprises radio network controller 110 and residential quarter 120 and 130.Each of these residential quarters all has a base station transmitting station and two Tx antennas: residential quarter 120 has BTS121 and transmitting antenna 122A and 122B, and residential quarter 130 has BTS 131 and transmitting antenna 132A and 132B.UE 140 has two Rx antenna 142A and 142B.Therefore, S=min (N * N _T, N _R)=min (2 * 2,2)=2＞1.The concrete open circuit MIMO modification of described embodiment is to use common periodicity or pseudorandom antenna displacement (PRAP) scheme, and S the stream that wherein has identical modulation and code-group (MCS) combination is from each residential quarter emission.Notice that this is so that described scheme is similar to the modification of horizontal bell lab layered formula space time code (H-BLAST).At a certain preset time of place, radio net 105 can flow 151 from antenna 122A and 132A emission the first emission, and simultaneously from antenna 122B and 132B emission the second emission stream 152.

The selected assembly of the exemplary embodiments of Fig. 2 graphic extension radio network controller 110.As shown in Figure 2, radio network controller 110 comprises: BTS interface 111, itself so that RNC 110 can communicate by letter with BTS 120 and 130; Processor; And the storage device 113 of storage computer generation code instruction.Processor 112 is coupled to storage device 113 and BTS interface 111, so that processor 112 reads and carry out the code that is stored in the storage device 113, thereby configuration BTS interface 111 is to cause the described process in BTS 120 and the 130 usefulness presents to be communicated by letter with UE 140 and other UE.

Described radio net can comprise extra controller.

The selected assembly of the exemplary embodiments of Fig. 3 graphic extension UE 140.As shown in Figure 3, UE 140 (for example comprises reception antenna 142A and 142B, radio net transceiver (receiver and reflector) 143, encoder/decoder piece 144, user input apparatus, keyboard) 145, display (for example, LED screen) 146, processor 147 and storage device 148.Be configured by processor 147 under the control of the code that radio net transceiver 143, encoder piece 144, user input apparatus 145 and display 146 are stored in storage device 148.User equipment (ue) device 140 is configured to use wireless cellular procotol (for example, the honeycomb fashion packet transmission protocol of more than setting forth) to communicate by letter with radio net 105 by wireless communication link, and carries out the process described in the presents.

Extra UE can communicate by letter with radio net 105.

Described radio net also can comprise extra base transceiver station.

Radio net 105 can use Orthodoxy Frequency Division Multiplex (OFDM) to launch to UE 140.In each OFDM multi-channel multiplexing symbols (subcarrier), can will whenever first-classly be emitted to UE 140 from radio net 105 at independent antenna; In addition, in time displacement stream ID is to the mapping of transmitting antenna ID, so that every first-class Rx SNR approximately equal.

The ground that is without loss of generality, let us is for a kind of relatively simple situation of this kind situation hypothesis, wherein:

S＝N _T.

For realizing for the right accurate channel estimating of each Tx-Rx antenna, do not reuse pilot subcarrier at the Tx antenna.These are different from reusable data subcarriers index on whole Tx antennas.Therefore, following just establishment:

P _i∩P _j＝φ

i≠j，

P wherein _iThe set of the upper pilot subcarrier index of ∈ antenna i.

Can be written as the Rx symbol of given OFDM symbol as follows:

$Y\left[k\right]=\underset{i=0}{\overset{N-1}{\mathrm{\&Sigma;}}}\underset{j=0}{\overset{N_T-1}{\mathrm{\&Sigma;}}}{H}_{\mathrm{ij}}\left[k\right]\&CenterDot;X_j\left[k\right]+V\left[K\right]$

$=\underset{j=0}{\overset{N_T-1}{\mathrm{\&Sigma;}}}{C}_j\left[k\right]\&CenterDot;X_j\left[k\right]+V\left[k\right],$

X wherein _iIn advance IFFT Tx modulation symbol on the antenna j on [k]=subcarrier k,

H _Ij[k]=from the SFN channel frequency response on the subcarrier k of cell i and antenna j,

C _jSFN channel frequency response on [k]=subcarrier k and the antenna j,

Y[k]=rear FFT Rx symbol on the subcarrier k, and

H _Ij[k], C _j[k], Y[k]=N _R* 1 vector.

Note having orthogonality from the pilot tone of each antenna in frequency domain, we just draw this relation:

Y[k]＝C _j[k]+V _j[k] k∈P _j，

That can use that (for example) least mean-square error (MMSE) or low-complexity ZF robust M MSE solution estimate each Tx antenna meets the SFN channel frequency response.

After channel estimating, can realize that flow point suppresses from reaching to disturb between stream with the MMSE filter.Can this be written as follows by calling rectangular projection lemma:

$Y\left[k\right]=C_i\left[k\right]\&CenterDot;X_i\left[k\right]+\underset{j=0}{\overset{N_T-1}{\mathrm{\&Sigma;}}}{C}_j\left[k\right]\&CenterDot;X_j\left[k\right]+V\left[k\right]$

$\stackrel{\&OverBar;}{X_i}\left[k\right]=C_i^H\left[k\right]\&CenterDot;{\left[\underset{j=0}{\overset{j\&NotEqual;i}{\stackrel{N_T-1}{\mathrm{\&Sigma;}}}}{C}_j\right[k]\&CenterDot;C_j^H[k]+\mathrm{\&Lambda;}[k\left]\right]}^{-1}\&CenterDot;Y\left[k\right],$

Λ [k]=E{V[k wherein] V ^H[k] }.

Stream can independently be decoded to each stream, and then it be balanced out from other stream continuously after the receiver place is separated.Can repeat to offset step until whole stream is decoded.The complexity of Interference Cancellation (SIC) depends on the quantity of stream continuously.

On receiver side, described receiver (for example, UE 140) uses the first reception antenna to receive first signal, and uses the second reception antenna to receive secondary signal.Described first signal comprises from the first data flow by the emission of the first physical channel of the first transmitting antenna or first group of transmitting antenna, and from the second transmitting antenna or second group of transmitting antenna the second data flow by the emission of the second physical channel.Similarly, described secondary signal comprises by the first data flow of the 3rd physical channel emission and second data flow of launching by the 4th physical channel.Estimate described four channels at the receiver place with pilot channel, or the data that provide with described receiver at the radio net place are estimated described four channels.Then, separable described first and second data flow of described receiver is to obtain the first separate data streams and the second separate data streams.At after separating, the first data in described the first data flow of described receiver trial decoding and the second data in described the second data flow.The trial of described data is unsuccessful if decode the described first time, and then described receiver can be decoded based on the partial decoding of h that obtains between the trial period first time after offsetting described interference again.

Can or broadcast on shared channel described first and second data flow multicast.

Because ABC air broadcast and multicast transmission be usually take the receiver of worst case as target, so be not that the UE that all is decided to be target implements can omit continuous Interference Cancellation in the situation of this step.

Up to the present discussion is an embodiment who sets forth among Fig. 1, wherein by using a plurality of antennas (to that is to say S=N at place, a residential quarter _T〉=2) MIMO technology has strengthened the SFN spectrum efficiency of ofdm system.The operation of Fig. 1 embodiment may not be confined to the use of OFDM, but can use other to use the method for MIMO.

Described in presents background technology part, a lot of residential quarters (sector) have single transmitting antenna.Add transmitting antenna to website and can relate to the extra cost that operator would rather avoid.Therefore, in other embodiments, we do not suppose to launch the diversity from single subdistrict.On the contrary, we suppose:

S=min (N*N _T, N _R)＞1, and

N _T=1 (that is to say the transmitting antenna in every residential quarter).

In other words, we assign into some groups with transmitting antenna, and emission is from the same group different data streams not, stream of each group transmitting antenna.

At this moment, SNR can be lower than the SNR in the strict SNF operation, and wherein the phase homogeneous turbulence is all launched in whole residential quarters, and this is because can be whenever first-class from the part subset emission of network cell.Yet SNR may still be high enough to utilize the spatial multiplexing gain.Quantity at described group/stream is especially true in the few situation, and as a result in each group the quantity of transmitting antenna relatively large, from can interested whole geographic area, providing good coverage.

In this kind layout, those UE that are positioned at one of them inside, residential quarter can go wrong, this be because these UE based on only having high carrier-in-interference (C/I) ratio from the strong signal of a residential quarter.These UE can not benefit from spatial multiplexing, but can be dependent on other multiplexing technique, for example, and time multiplexing (TDM) and frequency multiplex.

Fig. 4 graphic extension uses TDM and MIMO to carry out the single-frequency radio net 405 of broadcast or multicast to UE 440A and 440B.Radio net 405 comprises radio network controller 410 and residential quarter/BTS 420,424,428 and 432.(in described embodiment, each residential quarter and BTS adjoin, but are not this situation always.) BTS has transmitting antenna 421,425,429 and 433 separately.The structure of radio network controller 410 can be similar to or be same as the structure of radio network controller 110.The structure of each of UE 400A/B also can be same as or be similar to the structure of UE 140.Yet herein, radio net 405 and UE 440A/B are configured to communicate by letter according to the method for hereinafter setting forth in conjunction with this embodiment.

In described embodiment, S=N _R, use common PRAP or code to reuse BLAST (CR-BLAST) scheme, and arbitrary preset time from

Individual residential quarter emission N _RIndividual stream.N _REach of individual stream is therefore corresponding to one group of transmitting antenna in the cell associated group.It is in time displacement that stream is mapped to transmission antenna group.

In the case, the mode with time division multiplexing is come multiplexed a plurality of streams on the single transmitting antenna of every residential quarter.In the situation of two streams, for example, half symbol of every groove can be exclusively used in a stream, and second half symbol is specially in second.During the cycle very first time (T1), for example, from first group of transmitting antenna (it comprises the transmitting antenna 425 and 433 of BTS 424 and 432) emission the first symbol stream, and from second group of transmitting antenna (it comprises the transmitting antenna 421 and 429 of BTS 420 and 428) emission second symbol stream.During the time cycle (T2) subsequently, first-class from the emission of the second emission group, and from the first emission group emission second.Then, repeat described circulation, wherein the mapping of stream-antenna sets is switched repeatedly.This is illustrated among Fig. 5, and it shows that described radio net emission therebetween is from first group first-class and from the period of time T 1-1 to T1-N of second group second; Similarly, described radio net is launched the first-class second that reaches from first group from second group during period of time T 2-1 to T2-N.

UE (for example, UE 440A) away from those are enough from each transmitting antenna benefits from the spatial multiplexing gain because using MIMO to obtain.In other words, UE 440A receives two symbol streams.Simultaneously, the UE in the inside, residential quarter (for example, UE 440B) benefits from time multiplexing and high C/I.In other words, UE 440B once receives one of them stream only, but the C/I ratio is relatively high and follow high SNR, especially because the close transmitting antenna of UE 440B.

After stream is separated, can carries out independent decoding to each stream, and then it be balanced out from whole other streams continuously.Can repeat to offset step until whole stream is decoded.The complexity of Interference Cancellation (SIC) depends on the quantity of stream continuously.

The receiver of this embodiment can receive first signal and receive secondary signal with the second antenna with the first reception antenna during the one or more cycles very first time.Described first signal comprises: (1) is from the first transmitting antenna or first group of first data flow that transmitting antenna is launched by the first physical channel; And (2) are from the second transmitting antenna or second group of second data flow that transmitting antenna is launched by the second physical channel.Similarly, described secondary signal comprises by the first data flow of the 3rd physical channel emission and second data flow of launching by the 4th physical channel.Described the first data flow carries the first data during the cycle very first time, and described the second data flow carries the second data during the cycle very first time.

For example, use described four channels of pilot channel estimation at described receiver place.Then, separable described first and second data flow of described receiver is to obtain the first separate data streams and the second separate data streams.At after separating, the first data in described receiver trial decoding the first data flow and the second data in the second data flow.

If decode the first time of described data attempt unsuccessful, then described receiver can offset disturb after based on the described trial period first time between the partial decoding of h that obtains again decode.

Described receiver also decodable code from the subsequently time cycle during the data of received signal.Therefore, if the trial of the first decoding is unsuccessful, then described receiver can receive first signal at described the first antenna place during one or more the second time cycles, and can receive secondary signal at described the second antenna place during described one or more the second time cycles.Described receiver can use some or local channel to estimate described first and second data flow is separated with described first and described secondary signal, with obtain the second time cycle through separating the first data flow and through separating the second data flow.After separating described stream, described receiver can be attempted decoding from first and second data of first and second separate data streams of first and second time cycle again.

Please remember, owing to used TDM, so the first signal during second round comprises by the second data flow of the first physical channel emission and passes through the first data flow that the second physical channel is launched, and described secondary signal comprises by the second data flow of the 3rd physical channel emission and first data flow of launching by the 4th physical channel.Please remember that also the first data flow carries the first data during the second time cycle, and described the second data flow carries the second data during the second time cycle.Therefore, can during first and second time cycle, launch described data with redundant fashion.

Can be on shared channel multicast or broadcast described first and described the second data flow.

Fig. 6 graphic extension uses hierarchical modulation (HM) and MIMO to carry out the single-frequency radio net 605 of broadcast or multicast to UE 640A and 640B.Radio net 605 (it is similar to the network 405 of Fig. 6) comprises radio network controller 610 and residential quarter/BTS 620,624,628 and 632.Described residential quarter all has transmitting antenna 621,625,629 and 633 separately.The structure of radio network controller 610 can be similar to or be same as the structure of radio network controller 110, and it is shown among Fig. 2.Each structure of UE 640A/B can be same as or be similar to the structure of UE 140 equally, and it is shown among Fig. 3.Described radio net and UE 640A/B are configured to communicate by letter according to the method for hereinafter setting forth in conjunction with described embodiment.

Herein, as in network 405, S=N _R, use common PRAP or code to reuse BLAST (CR-BLAST) scheme, and locate from residential quarter emission N in arbitrary preset time _RIndividual stream.Described stream is carried by the signal of classified modulation.

In hierarchical modulation, with two data flow carrier wave is encoded.Consider 64-QAM (quadrature amplitude modulation), data are shone upon so that comprise QPSK stream among the 64-QAM.This produces two data flow: QPSK data flow and 16-QAM data flow.The data splitting speed of described two data flow can be same as the data rate of corresponding 64-QAM data flow.For the QPSK data flow, with symbolic coding to carrier wave, so that the different sections in the sophisticated signal plane of modulation constellation (for example, Q-I plane) represent the diverse location of symbol letter shift.For example, the left-hand component on Q-I plane can be corresponding to " 1 " value of the highest significant position of symbol, and the right half of part on described plane can be corresponding to " 0 " value of institute's rheme.Similarly, the latter half on described plane can be worth corresponding to " 1 " of the second highest significant position position, and the first half on described plane can be corresponding to " 0 " value of institute's rheme.Therefore, the symbol that falls into left upper quadrant will represent that " 10 " of two highest significant position positions, the symbol in the right upper quadrant will represent " 00 " in these positions, and the symbol in lower-left and the right lower quadrant will represent respectively that " 11 " reach " 01 " value.Extra bits corresponding to the symbol of 16-QAM data flow is determined by the character position in the determined concrete quadrant in the first two position.

Notice that described QPSK data flow is more more sane than 16-QAM data flow, this mean can described signal low SNR and the low C/I described QPSK data flow of recently decoding.Can change the interior spacing of described planisphere in order to provide extra robustness as cost to the QPSK data flow with the 16-QAM data flow.Therefore, described more sane BPSK data flow has the coverage greater than more unsane 16-QAM data flow.

In presents, comparatively sane layer will be called as basal layer in the classified modulation signal (for example, the stream of the BPSK in the above 64-QAM example); More unsane layer will be called as enhancement layer in the classified modulation signal (for example, the stream of the 16-QAM in the 64-QAM example).

Hierarchical modulation provides a kind of mechanism that improves transmission capacity.The raising of capacity is to be brought by the coverage that reduces enhancement layer, and can improve the performance of basal layer simultaneously.

In SNF 605, can in time described stream mapping be replaced enhancement layer from basal layer.During the very first time of Fig. 7 cycle T 1, for example, the first data flow S1 can be from first group of antenna transmission on the basal layer of the first classified modulation signal, and simultaneously can be from second group of antenna transmission on the enhancement layer of the second classified modulation signal.During the second period of time T 2 of Fig. 5, described the first data flow can be from first group of antenna transmission on the enhancement layer of the first classified modulation signal, and simultaneously can be from second group of antenna transmission on the basal layer of the second classified modulation signal.Therefore, when described when first-class in the emission of the basal layer of one group of antenna, launch the second layer at the enhancement layer of described antenna sets, and vice versa.In other words:

I=flows ID; And

The n=OFDM notation index.

As in the TDM of Fig. 4 embodiment, can be during cycle continuous time launch every data in first-class in the mode of redundancy.

Receiver (for example, one of them of UE 640) can be configured to receive first at the first reception antenna place and receive signal, described first receives signal comprises: (1) is from the first signal component of the first transmitting antenna (or first group of transmitting antenna) by the emission of the first physical channel; And (2) are from the secondary signal component of the second transmitting antenna (or second group of transmitting antenna) by the emission of the second physical channel.Described first signal component can comprise: (1) carries the first foundation layer of the first data flow; And (2) carry the first enhancement layer of the second data flow; Described secondary signal component can comprise: (1) carries the second basal layer of the second data flow; And (2) carry the second enhancement layer of the first data flow.Described receiver can be through further being configured to receive secondary signal at the second antenna place, and described secondary signal comprises: by the 3rd signal component of the 3rd physical channel emission; And (2) are by the 4th signal component of the 4th physical channel emission.Described the 3rd signal component can comprise: (1) carries the 3rd basal layer of the first data flow; And (2) carry the 3rd enhancement layer of the second data flow; Described the 4th signal component can comprise: (1) carries the 4th basal layer of the second data flow; And (2) carry the 4th enhancement layer of the first data flow.

Can estimate to obtain channel estimating for described channel to the described first, second, third and the 4th physical channel.Channel estimating can be implemented and can be based on pilot channel by described receiver.Some or all channel estimating become available after, separable described first and second signal component of described receiver.After signal was separated, described receiver can be attempted decoding from the first data flow of described first foundation layer and from the second data flow of described the first enhancement layer.

Described receiver can be attempted decoding from the two the second data flow of the first enhancement layer and the second basal layer.Select as another, described receiver can be estimated the quality of described first signal, and if the quality of described first signal (for example, SNR) be higher than scheduled measurement, then decode from the second data flow of described the first enhancement layer; If the quality of described first signal does not surpass described measurement, then described receiver can separate the described the 3rd and the 4th signal component and attempt decoding from the second data flow of the second basal layer with described channel estimating.Described receiver also can be estimated the quality of described secondary signal, and if the quality of described secondary signal be lower than predetermined threshold, then attempt decoding from the second data flow of described the first enhancement layer; If the quality of described secondary signal is not less than described threshold value, then described receiver the separable the described the 3rd and the 4th signal component and trial decoding are from the second data flow of the second basal layer.

Can use Interference Cancellation (IC) technology to offset interference from the basal layer of same signal to enhancement layer.

Exist at the node-b place in the situation of a plurality of transmitting antennas and needs emission cell-specific content, described system switches to Space Time Transmit Diversity (STTD) or closes described transmission diversity antennas.One in the described option may be comparatively simple, do not have any RF of the described transmission diversity antennas of dynamic ON/OFF implicit.

Although described continuously the step of the whole bag of tricks in this disclosure, some step in these steps can be by individual component in the mode of associating or in parallel, asynchronous or synchronous mode, implement with pipelined fashion or other alternate manner.There are not special requirement to implement the step that this explanation is listed with same order, unless indicate clearly, otherwise understand from the context or need in essence so.In addition, in each embodiment according to the present invention, be not step or the communication information of all each graphic extensions of needs, and may needs in some embodiment according to the present invention some not step or communication information of concrete graphic extension.

The person of ordinary skill in the field should be appreciated that, can represent information and signal with any of various different technologies and skill and technique.For example, data, instruction, order, information, signal, position, symbol and the chip that may mention in the whole above-mentioned explanation can be represented by voltage, electric current, electromagnetic wave, magnetic field or particle, light field or particle or its arbitrary combination.

The person of ordinary skill in the field should be further appreciated that in conjunction with this paper disclose various illustrative components, blocks that embodiment sets forth, module, circuit, and algorithm steps can be embodied as electronic hardware, computer software or the combination of the two.Being the interchangeability of viewing hardware and software clearly, above is to summarize various Illustrative components, square, module, circuit, and step from functional aspect.This kind be functional to be embodied as hardware or software and to depend on application-specific and put on design restrictive condition on the whole system.The person of ordinary skill in the field can implement for each application-specific described functional by different way, but the decision of these embodiments should be interpreted as causing deviating from scope of the present invention.

Disclosing various illustrative components, blocks, module and the circuit that embodiment sets forth in conjunction with this paper all can be made up or be implemented by lower array apparatus: general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor-transistor logic circuit, discrete hardware components or its are designed for arbitrary combination of all functions shown in the enforcement above.General processor can be microprocessor, but another is chosen as, and processor also can be arbitrary conventional processors, controller, microcontroller or configuration machine.Processor also can be embodied as the combination of arithmetic unit, for example, and the associating of the combination of DSP and microprocessor, the combination of multi-microprocessor, one or more microprocessor and DSP core, or arbitrary other this type of configuration.

In the software module that the step that discloses method that embodiment sets forth or algorithm in conjunction with this paper can be embodied directly in the hardware, carried out by processor or in the combination of the two.Software module can reside in the arbitrary other forms of medium known in random access memory (RAM), flash memory, read-only memory (ROM), Erasable Programmable Read Only Memory EPROM (EPROM), electrically erasable programmable ROM (EEPROM), register, hard disk, removable disk, CD-ROM or the technique.Exemplary storage medium is coupled to described processor, so that described processor can be from described read information, and information can be write described medium.In replacement scheme, described medium can be the part of processor.Described processor and medium can reside among the ASIC.And ASIC can reside in the user equipment (ue) device.Another is chosen as, and processor and medium can be used as discrete component and reside in the user equipment (ue) device.

Provide the above description of the disclosed embodiments to be intended to make the person of ordinary skill in the field can make or use the present invention.The person of ordinary skill in the field will be easy to draw the various modifications of described embodiment, and the General Principle that this paper defines is also applicable to other embodiment, and this does not deviate from the spirit or scope of the present invention.Therefore, the present invention does not plan to be defined as embodiment illustrated herein, and wants to give its broad range consistent with principle disclosed herein and novel feature.

Claims (19)

1. the method for a plurality of sector transmission data from cellular communications system, described method comprises:

To be assigned to from least one transmitting antenna of each sector in described a plurality of sectors L the transmission antenna group in the transmission antenna group, L is the integer greater than 1, and each transmission antenna group in the described L transmission antenna group comprises at least one transmitting antenna of described cellular communications system;

Described data sectional is become L data flow;

For at least one period 1, each data flow in the described L data flow is assigned to different transmission antenna group in the described L transmission antenna group, distribute the first time in transmission antenna group thereby produce data flow;

For described each transmission antenna group in the described L transmission antenna group, during described at least one period 1, be used in the carrier wave that the described data flow that is assigned to described each transmission antenna group during described at least one period 1 is modulated first frequency; And

During described at least one period 1, described transmitting antenna by a described L transmission antenna group with described carrier transmit to a plurality of receivers, so that the transmitting antenna of described each transmission antenna group emission needle during described at least one period 1 is assigned to the described data flow of described each transmission antenna group to described at least one period 1;

For at least one second round, described each data flow is assigned to different transmission antenna group in the described L transmission antenna group, distribute the second time in transmission antenna group thereby produce data flow, distribute the described second time and distribute not identical with the described first time;

For described each transmission antenna group in the described L transmission antenna group, during described at least one second round, be used in the described data flow that is assigned to described each transmission antenna group during described at least one second round and modulate described carrier wave; And

During described at least one second round, described transmitting antenna by a described L transmission antenna group with described carrier transmit to a plurality of receivers, so that the transmitting antenna of described each transmission antenna group emission needle during described at least one second round is assigned to the described data flow of described each transmission antenna group to described at least one second round.

2. the method for claim 1, wherein:

L equals 2;

Described at least one period 1 comprises a plurality of period 1;

Comprise a plurality of second rounds described at least one second round; And

At the first duration, the described period 1 of described a plurality of period 1 and the described second round of described a plurality of second rounds are interlocked.

3. one kind is used for from the device of a plurality of sector transmission data of cellular communications system, and described device comprises:

Be used for to be assigned to the device of the transmission antenna group in L the transmission antenna group from least one transmitting antenna of each sector of described a plurality of sectors, L is the integer greater than 1, and each transmission antenna group in the described L transmission antenna group comprises at least one transmitting antenna of described cellular communications system;

Be used for segmenting data into the device of L data flow;

Be used for at least one period 1, each data flow in the described L data flow is assigned to different transmission antenna group in the described L transmission antenna group, thereby produce the first time assigned unit of data flow in transmission antenna group;

Be used for described each transmission antenna group for a described L transmission antenna group, during described at least one period 1, be used in the device that the described data flow that is assigned to described each transmission antenna group during described at least one period 1 is modulated the carrier wave of first frequency; And

Be used for during described at least one period 1, described transmitting antenna by a described L transmission antenna group with described carrier transmit to a plurality of receivers, so that the transmitting antenna of described each transmission antenna group emission needle during described at least one period 1 is assigned to the device of the described data flow of described each transmission antenna group to described at least one period 1;

Be used for at least one second round, described each data flow is assigned to the device of transmission antenna group different in the described L transmission antenna group, thereby produce the second time assigned unit of data flow in transmission antenna group, distribute the described second time and distribute not identical with the described first time;

Be used for described each transmission antenna group for a described L transmission antenna group, during described at least one second round, be used in the device that the described data flow that is assigned to described each transmission antenna group during described at least one second round is modulated described carrier wave; And

Be used for during described at least one second round, described transmitting antenna by a described L transmission antenna group with described carrier transmit to a plurality of receivers so that the transmitting antenna of described each transmission antenna group during described at least one second round emission needle to the described device that is assigned to the described data flow of described each transmission antenna group at least one second round.

4. the method for a plurality of sector transmission data from cellular communications system, described method comprises:

At least one transmitting antenna of each sector in described a plurality of sectors is assigned in the first transmission antenna group or the second transmission antenna group, and each antenna sets in described first and second transmission antenna group comprises at least one transmitting antenna;

Described data placement is become the first data flow and the second data flow;

Carrier wave to given frequency carries out hierarchical modulation to obtain to have the first signal of first foundation layer and the first enhancement layer;

Described carrier wave is carried out hierarchical modulation to obtain to have the secondary signal of the second basal layer and the second enhancement layer;

Launch described first signal by each transmitting antenna in described the first transmission antenna group; And

Launch described secondary signal by each antenna in described the second transmission antenna group;

Wherein implement the step of described hierarchical modulation so that described first foundation layer carries the information of described the first data flow, described the first enhancement layer carries the information of described the second data flow, described the second basal layer carries the information of described the second data flow, and described the second enhancement layer carries the information of described the first data flow.

5. method as claimed in claim 4, the step of wherein launching described first signal comprises broadcast or multicast.

6. one kind is used for from the device of a plurality of sector transmission data of cellular communications system, and described device comprises:

Be used for described at least one transmitting antenna with each sector of described a plurality of sectors and be assigned to device in the first transmission antenna group or the second transmission antenna group, each antenna sets in described first and second transmission antenna group comprises at least one transmitting antenna;

Be used for data placement is become the device of the first data flow and the second data flow;

Be used for causing the carrier wave to given frequency to carry out hierarchical modulation has the first signal of first foundation layer and the first enhancement layer with acquisition device;

Be used for causing described carrier wave is carried out hierarchical modulation has the secondary signal of the second basal layer and the second enhancement layer with acquisition device;

Be used for causing the device of launching described first signal by each transmitting antenna of described the first transmission antenna group; And

Be used for causing the device of launching described secondary signal by each transmitting antenna of described the second transmission antenna group;

Wherein said first foundation layer carries the information of described the first data flow, described the first enhancement layer carries the information of described the second data flow, described the second basal layer carries the information of described the second data flow, and described the second enhancement layer carries the information of described the first data flow.

7. the method for the data that send from cellular communications system of a reception, described method comprises:

During the one or more cycles very first time, receive first signal at the first antenna place, described first signal is carried on the first frequency, described first signal comprises by the first data flow of the first physical channel emission and second data flow of launching by the second physical channel, described the first data flow comprises the first data during the described one or more cycles very first time, described the second data flow comprises the second data during the described one or more cycles very first time;

During the described one or more cycles very first time, receive secondary signal at the second antenna place, described secondary signal is carried on the described first frequency, and described secondary signal comprises by described first data flow of the 3rd physical channel emission and described second data flow of launching by the 4th physical channel;

Estimate that described the first physical channel is to obtain one or more the first channel estimating;

Estimate that described the second physical channel is to obtain one or more second channels estimations;

Estimate that described the 3rd physical channel is to obtain one or more the 3rd channel estimating;

Estimate that described the 4th physical channel is to obtain one or more the 4th channel estimating; And

Use some the described one or more first, second, third and the 4th channel estimating at least that described first and second data flow is separated with in described first signal and the described secondary signal at least one, thereby produce the first separate data streams and second separated flow in the described one or more cycles very first time.

8. method as claimed in claim 7, it further comprises:

Attempt for the first time decoding from described first and described the second data of described first and second separate data streams in the described one or more cycles very first time.

9. method as claimed in claim 8, if it is unsuccessful wherein to attempt the step of decoding the described first time, then described method further comprises:

During one or more the second time cycles, receive described first signal at described the first antenna place, described first signal comprises by described second data flow of described the first physical channel emission and described first data flow of launching by described the second physical channel, described the first data flow comprises described the first data during described one or more the second time cycles, described the second data flow comprises described the second data during described one or more the second time cycles;

Receive described secondary signal at described the second antenna place during described one or more the second time cycles, described secondary signal comprises by described second data flow of described the 3rd physical channel emission and described first data flow of launching by described the 4th physical channel;

Use some the described one or more first, second, third and the 4th channel estimating at least that described first and second data flow is separated with in described first signal and the described secondary signal at least one, thereby produce the first separate data streams and the second separate data streams of described one or more the second time cycles; And

Attempt for the second time decoding from described first and described the second data of described first and second separate data streams of described one or more first and second time cycles.

10. method as claimed in claim 7, the wherein said step that receives described first signal at described the first antenna place is included in shared channel and receives.

11. comprising, method 7 as claimed in claim, the wherein said step that receives described first signal at described the first antenna place receive the broadcast or multicast transmission.

12. a device that is used for receiving from the data of cellular communications system transmission, described device comprises:

Be used for during the one or more cycles very first time, receiving at the first antenna place the device of first signal, described first signal is carried on the first frequency, described first signal comprises by the first data flow of the first physical channel emission and second data flow of launching by the second physical channel, described the first data flow comprises the first data during the described one or more cycles very first time, described the second data flow comprises the second data during the described one or more cycles very first time;

Be used for during the described one or more cycles very first time, receiving at the second antenna place the device of secondary signal, described secondary signal is carried on the described first frequency, and described secondary signal comprises by described first data flow of the 3rd physical channel emission and described second data flow of launching by the 4th physical channel;

Be used for estimating that described the first physical channel is to obtain the device of one or more the first channel estimating;

Be used for estimating that described the second physical channel is to obtain the device of one or more second channels estimations;

Be used for estimating that described the 3rd physical channel is to obtain the device of one or more the 3rd channel estimating;

Be used for estimating that described the 4th physical channel is to obtain the device of one or more the 4th channel estimating; And

Be used for to use some the described one or more first, second, third and the 4th channel estimating at least that at least one of described first and second data flow and described first signal and described secondary signal separated, thereby produce first separate data streams in the described one or more cycles very first time and the device of the second separated flow.

13. device as claimed in claim 12, it further comprises for attempting for the first time decoding from the device of described first and described the second data of described first and second separate data streams in the described one or more cycles very first time.

14. device as claimed in claim 12, it further comprises:

Be used for during one or more the second time cycles, receiving at described the first antenna place the device of described first signal, described first signal comprises by described second data flow of described the first physical channel emission and described first data flow of launching by described the second physical channel, described the first data flow comprises described the first data during described one or more the second time cycles, described the second data flow comprises described the second data during described one or more the second time cycles;

Be used for receiving at described the second antenna place during described one or more the second time cycles the device of described secondary signal, described secondary signal comprises by described second data flow of described the 3rd physical channel emission and described first data flow of launching by described the 4th physical channel;

Be used for to use some the described one or more first, second, third and the 4th channel estimating at least that at least one of described first and second data flow and described first signal and described secondary signal separated, thereby produce the device of the first separate data streams and the second separate data streams of described one or more the second time cycles; And

Be used for attempting for the second time decoding from the device of described first and described the second data of described first and second separate data streams of described one or more first and second time cycles.

15. the method for the data that a reception sends from cellular communications system, described method comprises:

Receive first signal at the first antenna place, described first signal comprises by the first signal component of the first physical channel emission and the secondary signal component of launching by the second physical channel, described first signal component comprises the first foundation layer that carries the first data flow and carries the first enhancement layer of the second data flow, and described secondary signal component comprises the second basal layer that carries described the second data flow and the second enhancement layer that carries described the first data flow;

Receive secondary signal at the second antenna place, described secondary signal comprises by the 3rd signal component of the 3rd physical channel emission and the 4th signal component of launching by the 4th physical channel, described the 3rd signal component comprises the 3rd basal layer that carries described the first data flow and the 3rd enhancement layer that carries described the second data flow, and described the 4th signal component comprises the 4th basal layer that carries described the second data flow and the 4th enhancement layer that carries described the first data flow;

Estimate that the described first, second, third and the 4th physical channel is to obtain one or more channel estimating;

Separate described first and second signal component with described one or more channel estimating;

Decoding is from described first data flow of described first foundation layer after described separating step; And

After described separating step, decoding is from described second data flow of at least one layer that is selected from described the first enhancement layer and described the second basal layer;

Wherein use identical carrier frequency hierarchical modulation described first, second, third and the 4th signal component.

16. method as claimed in claim 15, the step of described the second data flow of wherein said decoding comprise that decoding is from the two described the second data flow of described the first enhancement layer and described the second basal layer.

17. method as claimed in claim 15, the wherein said step that receives at described the first antenna place is included in shared channel and receives.

18. method as claimed in claim 15, the wherein said step that receives at described the first antenna place comprises the reception broadcast or multicast.

19. a device that is used for receiving from the data of cellular communications system transmission, described device comprises:

Be used for receiving at the first antenna place the device of first signal, described first signal comprises by the first signal component of the first physical channel emission and the secondary signal component of launching by the second physical channel, described first signal component comprises the first foundation layer that carries the first data flow and carries the first enhancement layer of the second data flow, and described secondary signal component comprises the second basal layer that carries described the second data flow and the second enhancement layer that carries described the first data flow;

Be used for receiving at the second antenna place the device of secondary signal, described secondary signal comprises by the 3rd signal component of the 3rd physical channel emission and the 4th signal component of launching by the 4th physical channel, described the 3rd signal component comprises the 3rd basal layer that carries described the first data flow and the 3rd enhancement layer that carries described the second data flow, and described the 4th signal component comprises the 4th basal layer that carries described the second data flow and the 4th enhancement layer that carries described the first data flow;

Be used for estimating that the described first, second, third and the 4th physical channel is to obtain the device of one or more channel estimating;

Be used for separating the device of described first and second signal component with described one or more channel estimating;

Be used for after described separating step, decoding is from the device of described first data flow of described first foundation layer; And

Be used for after described separating step, decoding is from the device of described second data flow of at least one layer that is selected from described the first enhancement layer and described the second basal layer; And

Be used for using the device of identical carrier frequency hierarchical modulation described first, second, third and the 4th signal component.

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