CN1894979A - System and method for automatically configuring and integrating a radio base station into an existing wireless cellular communication network with full bi-directional roaming and handover capability - Google Patents

Abstract

A radio base station in a mobile communication network collects information about the network and exchanges data with a configuration device, the Internet System Manager(iSM). The iSM automatically configures and integrates the base station into the network by defining configuration parameter settings that allow full interoperation of the base station with the network, with regards to roaming and handover in particular, without the need to add or modify parameter settings in other existing network elements. A very large number and high geographical density of such base stations is supported with full interoperation between them, allowing to overcome limitations of conventional mobile communication networks in this regard, by utilizing a certain combination of parameter settings and a new method to address the different base stations in the network.

Description

Be used for disposing automatically radio base station and it is integrated into the system and method for the existing wireless cellular communication network with full bi-directional roaming and switching capability

Related application: the application requires the U.S. Provisional Application No.60/492 that submitted on August 6th, 2003,825 rights and interests.The application be submitted on October 25th, 2002, patent application serial numbers is No.10/280, the part continuation application of U.S.'s non-provisional application of 733.

Technical field

The present invention generally relates to radio communication, and more specifically, relates to the internet base station of describing in title for " internet base station ", sequence number is 10/280,733 U.S. Patent application (iBS).

Background technology

As shown in Figure 1, base station in mobile communications network (base transceiver station, BTS) 1 radio communication that provides with travelling carriage (MS) 2.Each BTS 1 all has limited scope and therefore limited overlay area, thereby the base station that need much have neighboring coverage areas to provide continuous service for travelling carriage.The overlay area of BTS also is known as radio plot (cell).In this cellular network, there are several mobile switching centres (MSC) 3 usually, they provide the mobile network to arrive the connection of other communication networks of for example wired public switch telephone network (PSTN) on the one hand; On the other hand, they are typically connected to several base station controllers (BSC) 5, and described base station controller is controlled at the several BTS in the geographic area.Because MSC, BSC are usually located at different places with BTS, so need to show as the transmission facilities (facility) 6 and 7 of transmission line, Microwave Radio link or (being sometimes) satellite link form at these intersites.

In current conventional mobile communications network, the configuration of new base station and integrated be a complexity, the consuming time and task of easily making mistake, need the skilled engineering personnel of network operater to plan carefully and manually carry out.Must come configurating base station and they are integrated in the ambient network with a lot of parameters, to provide (facilitate) described base station self operation suitable, anti-interference (interference-free), and the interoperability of they and other neighbor base stations, particularly about the operation of " roaming " and " switching ".Roaming is meant when passing the service area of different base station the unbroken accessibility (accessibility) when mobile device is got or inserted phone or carries out other radio communications.Switch be meant when mobile device when the coverage of a base station enters the coverage of another base station, unbroken continuation (continuation) of ongoing radio communication.

Need comprise the tabulation (neighbor list) and the parameter of radio frequency, transmit power level, neighbor base station for the definition of each base station and with the parameter that the parameter of other base stations is coordinated mutually, and some numbering plans, comprise base station identity code (BSIC), cell identifier (CI) and location area identifier (LAI).These parameters not only need typing (enter into) own to the base station, also need to be entered in other network componentses (element), promptly corresponding BSC and MSC.In addition, when in new base station adding network or the network other variations taking place, existing base station and reconfiguring of other network componentses are absolutely necessary.In view of conventional base station googol order and high geographical density in current Cellular Networks, effort that this need of work is huge and cost.

Another problem of Xie Jueing is exactly the mobility (mobility) of iBS and checks the whether proof procedure (process) in the zone that secures permission of an iBS herein.Because the past base station return operator (carrier) all and install by operator, so this is a new problem.By introducing littler and more easily mobile base station of new generation (unlike cell tower), the mobility of " fixing " base station also becomes a problem in this solution.

Summary of the invention

Submit on October 25th, 2002, sequence number is to describe iBS 8 (Fig. 2) in detail in (commonly owned) U. S. application of owning together of 10/280,733.The theme of USSN 10/280,733 is that the world of WO 2004/040938 is open in open at corresponding (and owning together) publication number.

IBS 8 is internet base stations, and purpose is that dwelling house, office or other buildings (premise) the user or public domain provide for the mobile communication service or improve and cover and professional ability.Estimate that iBS can reach than more quantity in conventional base station and bigger density (millions of each network of contrast are interior thousands of in each network).IBS utilizes user's existing internet connection 9 and public the Internet 10 to be connected to internet base station controller (iBSC) 11 and Internet system manager (iSM) 12.IBSC 11 most possible 3 one of MSC (mobile switching centre) with conventional mobile communications network place and are connected to MSC 3 (in this case, transmission facilities 13 is that the scene (on-site) of this locality of two equipment rooms connects), and control and instruct communication between MSC 3 and some (normally a lot) iBS unit 8.In the automatic configuration of iBS unit 8 and in the process in the network of forming by conventional base station and other iBS unit around being integrated into, the described iBS of iSM 12 assistance unit 8.

IBS 8 intentions are set up by the user and are come into operation, and do not need any support of network operater employee or action.Therefore need a kind of method, in case the user to the unit power supply and be connected on the internet, just can dispose iBS 8 in this way and it is integrated in the cellular network on every side automatically.Especially, this method also must guarantee, when iBS is come into operation by the user, not need the base station controller of other existing conventional base stations, conventional base station or the configuration of mobile switching centre are done any change.

In an exemplary of the present invention, internet base station (iBS) receives transmission information by the base stations around other and (Internet system manager, iSM) swap data are collected about the information of mobile communications network on every side with configuration device.Based on these data be stored in information among the iSM before, so iSM automatically determines a lot of suitable configuration parameters for iBS, to allow suitable, the jamproof operation of (allow for) described iBS, and the interoperability of iBS and other neighbor base stations (conventional base station and other iBS), particularly about the operation of " roaming " described above and " switching ".By prior one group of specific predefine parameter being applied to the general networks parts only once, just can avoiding in order need to allow the configuration parameter of increase or modification general networks parts (conventional base station (BTS), their base station controller (BSC) or mobile switching centre (MSC)) with the interoperability of iBS.A kind of particular combinations that parameter is provided with and the ad hoc approach of the different iBS of addressing in network (address) make it possible to overcome conventional mobile communications network in the restriction aspect the base station number that can support and the geographical density, when keeping between them completely interoperability, make the base station of adopting a large amount of high density to distribute become possibility.

For the optimization interoperability and minimize required transfer resource, iSM also comes iBS is integrated in the existing network by iBS is distributed to specific of being generally in several internet base station controllers (iBSC) in network.

Process described herein (procedure) not only is applied to iBS, also is applied to be managed and be connected to by (i) BSC by iSM the conventional base station of MSC.

In case check the following drawings and detailed description, those skilled in the art will be or will become clear other features of the present invention, purpose and realization.The intention of the description here comprises feature, purpose and the realization that all these are additional, so that they fall within the scope of the invention and are subjected to the protection of appended claims.

Description of drawings

Fig. 1 is the figure of conventional communication network.

Fig. 2 is according to the present invention, iBS network and the combined figure of conventional wireless communication network components.

Fig. 3 illustrates the interface of iBS and iSM and is used for automatic iBS configuration and the figure of integrated various data sources.

Fig. 4 is the table of embodiment of having stated the parameter combinations of CGI (global cell identifier), BSIC (base station identity code) and ARFCN (frequency), and described parameter combinations is pointed to iBS with it and is used to conventional macrocell as for example mode of nine neighbor cell definition N of Target cell.

Fig. 5 illustrates to be used for the figure of macrocell to the message flow of iBS switching, and wherein five iBS in the pointer list of described macrocell share same CGI.

Embodiment

As exemplary embodiment, described the iBS that supports GSM standard, and it is integrated in the GSM mobile communications network and work therein necessary parameter and process.Yet the present invention is not limited to support the GSM technology, can also support other technologies, for example CDMA, iDEN and 3G/UMTS.

1. to the investigation of radio (radio) environment

When iBS was switched on, it can investigate its radio environment, and under the help of iBSC and/or iSM, it can define and much be integrated into existing mobile communications network and the necessary parameter of working therein then.

The receiver of iBS not only can receive in up link band (its operate as normal band), also can receive in the down link band of travelling carriage (MS) receiver operate as normal.

When iBS is switched on, it will at first scan whole down-link frequencies band, be done when being switched on just as MS.By the scanning to the down link band, iBS will identify the macrocell of working and other iBS in this zone.(noticing that term " macrocell (macrocell) " is used to refer to any non-iBS radio plot here, so it also can refer to conventional Microcell, and not necessarily only refers to real classical macrocell).Described iBS will search BCCH signal (Broadcast Control Channel) and decipher CGI (global cell identifier) and the BSIC (base station identity code) that is broadcasted.CGI is made up of LAI (location area identifier) and CI (cell identifier).LAI is made up of MCC (Mobile Country Code MCC), MNC (Mobile Network Code) and LAC (location area code).Described iBS will search the sub-district (can by MCC and MNC identification) of a carrier network part that belongs to it, and to Internet system manager (iSM) report:

BCCH frequency (ARFCN),

The signal level that receives (RXLEV),

The quality that receives (RXQUAL),

CGI，

BSIC

And by other information (as unique iBS sign indicating number) of other iBS broadcasting.

The sub-district of being reported is exactly the potential handover neighbor of described iBS, supposes that their signal level is enough strong.Which sub-district the signal level that iSM records assessment also determines be defined as the neighbor cell of described iBS based on field intensity (field strength).In addition, the macro cell message of being reported by described iBS will be used for creating " iBS pointer list " (seeing the 2.6.4 joint) at iBSC, and described tabulation will be played an important role in the iBS handoff procedure at macrocell.

If do not identify the sub-district of the carrier network that belongs to described iBS in down link scanning, then iBS is in the zone that this operator does not have to cover.Under the sort of situation, iBS will report the every other sub-district that it can receive to iSM, and this allows iSM to determine whether (by analyzing MCC and MNC) described iBS really is positioned at specified country and/or market as the user.IBS even can scan the frequency of " non-country (non-country) ".For example: suppose that iBS is at USA (1900MHZ); Then iBS also will scan the frequency (Europe and Asia) of 900MHZ and 1800MHZ.

Another embodiment of the invention is exactly, and iBS has integrated GPS receiver, and to the iSM reported position.ISM can utilize coordinate to finish following operation then: the first, and the address that cross-check iBS enters; The second, determine which sub-district should be the neighbours of this iBS sub-district.

Operator (mobile network operator) will reserve a lot of frequency spectrums for the iBS special use (and can not use for macrocell) in his usable frequency spectrum.Down link scanning also will provide about on those iBS frequencies and may be in the information of the interference on the adjacent macro cell frequency, and help thus to iBS itself selects suitable operating frequency, described in saving as the 2.1st.

2.iBS parameter-definition

As conventional base station, most of iBS configuration parameters will be the default settings of once being set by network operater, only be different from default value once in a while.

In order to switch to the iBS sub-district from macrocell, the iBS sub-district must be listed in neighbours in the neighbor cell of macrocell is described.These neighbor cells are described and are resided among the BSC, and the frequency that iBS uses also must be included in the neighbor list of all adjacent cells.One object of the present invention is exactly when a new iBS reaches the standard grade, to avoid the software among existing BSC and the MSC is made any change, and eliminate the needs of revising these neighbor lists and neighbor cell description.

In addition, the BSC of most of main gsm system manufacturers does not allow for any one sub-district typing and concerns more than 32 neighbor cells.

Therefore, must be static as the description (frequency, LAI, CI and the BSIC that comprise iBS) of macrocell neighbours' iBS, and in macrocell BTS and BSC scheduled justice, and iBS can with Different L AI, CI and the quantity of BSIC be limited.In view of a large amount of iBS is used in expectation, this is sharing LAC, CI and BSIC limited, the quantity much less with regard to meaning iBS all in the network.For conventional GSM network and its exchange/routing device (MSC and BSC), the several iBS in a group just will seem it is a single subdistrict with common cell parameter, and iBSC will be responsible for route affairs additional in such group.On the other hand, keep the number of iBS as much as possible little in such group in order to minimize roaming and to set up the control flow of calling out in the required network, being preferably in.

Most conventional sub-district in most of networks has the neighbor cell about 10, has also just stayed 20 and can be the used neighbours' definition of iBS (is 32 to get by maximum number).Yet some macrocells in specific environment (for example having the radio propagation through the waters) are not having just had obviously the more neighborhood of more number under the situation of iBS.So recommend a kind of network configuration to the operator, as starting point with relatively small number purpose cell parameter collection of reserving to iBS, this network configuration after can expand with the increase of the iBS number in the network---for example:

In network range, reserve 3 frequencies (ARFCN) (" iBS frequency ") for iBS

In network range, reserve 3 BSIC (" iBS BSIC ") for iBS

9 neighbours' (adjacent) relations (have 9 different CGI in each MSC area, described 9 CGI are made up of 9 different LAC and CI) with iBS in each macrocell, have been defined

Figure 4 illustrates the embodiment of CGI (global sub-district indications), BSIC (base station identity code) and this parameter combinations of ARFCN (frequency), described parameter combinations is pointed to iBS with it and is used to conventional macrocell as for example mode of nine neighbor cell definition N of Target cell.

The base station controller (BSC/iBSC) that allows each sub-district to have 32 or 64 more neighborhoods that the current system manufacturer of obvious ratio provided will be to overcome restriction described above and allow key according to the integrated base station of a large amount of self-configuration of the clear and definite addressing of modular system process of unmodified (otherwiseunmodified) and oneself.Therefore this method also is a part of the present invention.Following paragraph is described and is used for the existing solution that only allows the conventional BSC of each sub-district 32 or 64 neighborhoods.

2.1 operating frequency (ARFCN)

Based on top the 1st joint described (down link) interferometry be stored in the information about the frequency (iBS frequency) of being kept for the iBS special use by network operater among the iSM, iSM will can accept interference level according to find minimum or first and distribute described iBS frequency to iBS.If have equal least interference level on the several frequencies in available iBS frequency, or do not have on all iBS frequencies that what connection disturbs, then distribute the iBS frequency to iBS by random number generator or in the cycle assignment process, thereby guarantee that the use to all available iBS frequencies is evenly distributed in whole network, in the long run, this is with the overall risk of minimise interference.Another possibility is exactly the frequency that iSM will select sub-district farthest.

Except that the special-purpose iBS frequency of the reservation of using some as described above, replacedly, the BCCH frequency of the conventional base station of iBS in also can shared network.Like this, the operating frequency of iBS can be selected from all BCCH frequencies of using whole network, perhaps only select from those BCCH frequencies of the neighbor cell of strong macrocell, iBS will find out described BCCH frequency by monitoring the neighbor list broadcasting of strong sub-district.In both cases, iBS will report to iSM to the signal strength signal intensity that receives on correlated frequency, and iSM will give iBS the Frequency Distribution with lowest interference signal level.

Be independent of employed frequency allocation method, iBS is the described radio environment of continuous monitoring, i.e. signal level and the bit error rate (bit error rate) that receives from serviced travelling carriage, and receive and the signal level and the bit error rate of report by travelling carriage.Continue on the longer time period if find the radio condition of difference, iBS will start redistributing of new frequency.

2.2 transmit power level

The transmit power level of iBS initially is set to the default value by operator's definition.Can be according to user's specific environment---for example whether he wants to cover only apartment, the house in wounded in the battle garden, Building one or bigger building, indoor or outdoor, or public arena---adjust transmit power level between minimum limit and maximum constraints, described adjustment can be by the manual input of user or automatically determine.The power level of being imported generation by the user can for example be covered by more suitable value, described value based on as the 1st joint in the number of the neighbor cell that iBS can receive in the radio environment fact-finding process described, described value can indicate iBS and be mounted in indoor or outdoor, be in the place that exposes or the place of sealing, or the like.

In addition, real iBS transmitting power is based on average signal level and/or is adjusted to constantly under the current radio condition by the bit error rate that serviced travelling carriage receives and reports, iBS will monitor described average signal level and/or bit error rate constantly.For example, if the average signal level that receives is low, then can improve transmitting power; If the signal level height that receives then can reduce transmitting power.

If the bit error rate height that receives (link/signal quality of difference), then transmitting power can be increased to given threshold value.

Can programme to iSM with such method, promptly operator can import:

The emission power output (for example 10mW) of acquiescence

With dB be the power increment of step-length or decrement (for example+/-2dB)

Minimum/peak power output (1mW for example; 100mW)

Carry out the quantity (n=3) of the calling of power output renewal

In this case, iBS will begin (unless it finds too many neighbours at establishment stage) with default value 10mW.After 3 callings, iBS or iSM will calculate " on average " value and the minimum/maximum of field intensity, and the decision power output should be identical, reduces still and improve.The minimax value of power output will be retained and (be not less than 1mW; Be not higher than 100mW).

The quantity of calling out can not used fixed value, but can change in time; Also promptly, n=1 n=2 subsequently when initial ... or the like; Thereby make n increase in time, because bad border of radio will be more stable in the stage afterwards.

(2.3LAC location area code)

The foundation of mobile terminal calling and position updating process (Location Update procedure) need LAC.It also is the part of CGI, and described CGI is used for addressing target sub-district in switching by BSC and MSC.

Each sub-district in the general networks all belongs to a band of position, and broadcasts its LAC on BCCH.When the calling that receives specific mobile device (mobile), MSC (mobile switching centre) sends paging command (passing through BSC) with all sub-districts in the current band of position of registering of described mobile device.

When entering a new band of position, the mobile device of roaming in network can executing location renewal process (seeing the 3.2.2 joint), and sends the corresponding command to MSC/VLR (visitor location register device (visitor Location Register)).When mobile device detect new sub-district have with it before institute's " stop (camping) " sub-district (sub-district that also has peak signal before promptly) during different LAC, it identifies it and has entered a new band of position.(note: when new LAC belonged to different MSC/VLR, the reposition of mobile device also need---home location register device (Home Location Register)---be updated at HLR).

IBS uses the LAC that separates with each macrocell to reduce them and receives and the unnecessary paging command of interface transmission aloft then from MSC (passing through iBSC).(if share LAC with the macrocell around their, iBS is necessary for that certain location zone and handles all paging command, and the great majority of described paging command all are what to be used in fact by the mobile device of described macrocell service).

(then have only when sub-district gravity treatment lag parameter is exceeded Shi Caihui and take place) on described iBS for iBS and macrocell use the strategy of LAC separately also to make to be easier to the mobile device of the fast moving that prevents to pass through an iBS overlay area to stop (camping).Under the less situation in the overlay area of iBS and generally only find move at a slow speed or the situation of static mobile device under, this is reasonable.

In view of there being 65535 different LAC altogether, be the enough big special-purpose LAC collection (iBS-LAC of iBS definition, open with the LAC branch that is used for macrocell) not problem concerning network operater, because for each MSC, or for as 2.7 described in the iBS extension of network in each BSC, only need/may have for example 9/maximum 32 different LAC.

HLR upgrades when entering or leaving an iBS sub-district when mobile device, iSM coordinates the border of the described iBS band of position with the border in MSC/VLR zone---and in other words, iBS has been assigned to such band of position: the described band of position is by the same MSC control of also controlling the band of position under the macrocell the strongest around the iBS.The LAC of macrocell is discerned in the investigation phase by the radio environment that iBS describes in the 1st joint on every side.In addition, iSM has a reference database, which LAC is shown belongs to which MSC.The MSC of the several digital Direct Recognition that begins most with them under them, this mode of LAC of organizing is as the recommended network operater of giving of the ideal style of creating this database.

By iBS being distributed to the strategy of the MSC identical, avoided MSC to ask switching (this needs more signal resource than switching in the MSC) fully with its macrocell neighbours.All relate to switching on of iBS is all to be to switch in the MSC, and this causes more efficiently that hand off signaling/channel activates, and paging flow distribution in the network more efficiently.

Because identical, each MSC should have an iBSC at least, it and a placement of MSC (co-locate), thereby reduction/elimination MSC/iBSC circuit/transmission cost.

Described at the 2nd joint, for the user who allows iBS is come into operation iBS in the unpredictable time and with unpredictable quantity and position, and do not need manually to increase or revise configuration parameter, the preset parameter of all iBS (CGI and BSIC) all is to describe in (residing among the BSC) predefined at the neighbor cell of each macrocell.CGI comprises LAC and CI.For example 9 CGI (iBS-CGI) (seeing the 2nd joint) that are used at the iBS of a MSC area comprise different LAC, and these 9 iBS-LAC among each MSC are different.Like this, the iBS in the whole network of MSC/iBSC zone neutralization is distributed as maximum quantity in the band of position (for example among each MSC 9), thereby makes that unnecessary paging flow remains on minimum during mobile terminal calling.Must work as and in MSC, specify when iBSC is connected to MSC being used in described for example 9 iBS-LAC in the MSC area.When iBS is switched on, it will monitor the LAC of the macrocell neighbours around it, and LAC is reported to iSM.ISM will based on it record in the network which LAC belong to the database of which MSC, determine this iBS with chain by to which MSC/iBSC, and a CGI issued (issue) iBS (this CGI comprises the LAC that chooses).IBS needs described CGI to be used for switching, carrying out call set up signaling with iBSC/MSC, and must broadcast this CGI on its BCCH.

For said method, replacedly, the information about its position that iSM can provide when activating iBS based on iBS user is combined in detailed geographical data bank among the iSM, that zip code area and/or single street are shown, decides it which iBSC this iBS is linked to.

Except the above-described requirement that LAC is assigned to iBS, iSM decides it that among for example 9 LAC of iBSC which distributed to a new iBS by process selection cycle or at random, and calculate the distribution number of times of each LAC, thereby guarantee for example 9 LAC evenly distributions in its iBS (for optimization paging flow distribution and hand off signaling/channel activation) of iBSC.

In the same way, iSM has also guaranteed the least possible the reusing of CGI (CGI=LAI+CI) (described iBS goes up (seeing the 2.6.4 joint) at " the iBS pointer list " of macrocell) to iBS, thereby makes and switch in (seeing the 3.2.1 joint) quantity of iBS that must parallel addressing and therefore signaling consumption minimum associated therewith at macrocell to iBS.

Another embodiment of the invention is to change interface specification simply, and allows longer LAI, CI and bigger neighbor list.

2.3.1 the LAC among the iBS of direct neighbor (immediately adjacent)

Mutually the iBS of direct neighbor should have identical LAC, thereby makes the unnecessary position updating process that carries out when each mobile device passes cell boarder between them.Such iBS is probably operated by the same owner in identical (broad sense) building, so mobile device also may often pass cell boarder.

On the other hand, (see the 3.1.1.1 joint) when the VLR function among the use iBSC, opposite method is used in suggestion: the iBS of direct neighbor has different LAC.

When new iBS connects, it will carry out radio environment investigation (seeing the 1st joint) and determine whether it can receive other iBS.If, its will decode LAC of these other iBS and they are reported to iSM.If the signal level of these other iBS is higher than certain threshold value, then iSM will determine that these other iBS are with described new iBS direct neighbor, then according to whether having used the VLR among the iBSC to guarantee that described iBS obtains identical or different LAC.If the user has registered a plurality of iBS in same position, iSM can determine whether these iBS are the neighbours that belong to " the identical owner ".

(2.4CI cell identifier)

In the GSM network, the CI in a band of position must be unique, but can reuse beyond in the band of position.Because in whole network, 9 LAC among 9 CGI of for example 9 iBS neighborhoods of each macrocell are different, so single in theory CI can be used for all iBS in the whole network.Yet (for example) 9 CI that recommendation is used for the iBS in each MSC/iBSC zone also have nothing in common with each other in whole network, identify (identification) thereby reserve (allow for) more detailed iBS for possible application in the future.In view of there being 65535 different CI altogether, for iBS defines enough big CI set pair network operater is not problem, because for each MSC, or for as 2.7 described in the iBS extension of network in each BSC, only need/may have for example 9/maximum 32 different CI.These iBS-CI are even necessary to be made a distinction with the CI that is used for macrocell, but takes into account in the future possible application, in any case still recommend not use any CI allocation strategy of reusing.

So the CI allocation strategy of iBS is as follows: for each MSC/iBSC zone, iSM has the CGI of for example 9 reservations to distribute to iBS.9 LAC and 9 CI of being included among these CGI have nothing in common with each other, and does not reuse in other places yet in network.When a new iBS is switched on, iSM will determine which MSC/iBSC it should be linked to (as described in the 2.3rd joint, LAC based on the strongest macrocell of iBS), and 9 iBS-CGI of this iBSC (have been comprised the interior unique CI of LAC unique in the network range and network range---attention, this CGI will be shared by iBS all in that band of position, and this is necessary for neighborhood (for example 9) that can predefine iBS fixing, limited quantity in conventional BSC) in one distribute to iBS.

(2.5BSIC base station identity code)

In handoff procedure (process), need BSIC.It goes up broadcasting at each sub-district SCH (synchronizing channel) in general networks.Those frequencies that mobile device is monitored at it (monitoring for its neighbor list according to the sub-district of its service) go up decoding BSIC, and in its measurement report these are reported to BSC.BSC has the reference listing (neighborhood tabulation or neighbor lists) which BSIC to belong to the real neighbours of Serving cell about, and signal real really neighbours' signal whether that the decision mobile device hears still is from the co-channel signal of another (at a distance) sub-district (having different B SIC).BSC correspondingly makes and switches decision then.

Therefore, the rule of general networks planning is exactly: the sub-district near (vicinity), the identical BCCH/SCH frequency of use must have different BSIC." approaching " expression in this article: enough near, thus make them may become the common neighbours in another sub-district.

Therefore long 6 of BSIC only can have 64 different values at most.With the zone that borders in other countries or market, network operater must be adjusted NCC (Network Color Code---BSIC preceding 3), also just means such each operator of zone of bordering on to have only less BSIC to use---under situation worst only 8 available.A large amount of iBS is arranged in the network, and only have the frequency of limited quantity to use (such as 3) for iBS, this just means with " normally " GSM network planning rule compares, in iBS, must reuse BSIC, even mutual " approaching " (being that they are neighbours of identical macrocell) of those iBS with identical BCCH frequency.

In addition, just as LAC and the CI of iBS, the BSIC of iBS must be in the neighbor lists (in BSC) of each macrocell predefine, wherein, because previous reasons, the quantity of the neighborhood of iBS must limited (for example, 9).If the quantity of iBS neighborhood is chosen to be 9 in macrocell, and by network operater be defined as iBS special-purpose number of frequencies be 3, the quantity of then desired different BSIC is 9/3=3.This rests distinguishing the flavor of and has 9 kinds of different BCCH frequencies and the combination of BSIC, and each combination is pointed in the neighbor lists of macrocell one among 9 iBS-CGI.

ISM selects only BSIC as follows with only rule of distributing to new iBS and will deferring to: if new iBS for example receives some relative signal strength (interference) on 3 iBS frequencies all in its radio environment investigation (seeing the 1st joint), the frequency that it should select to have the lowest interference level is used for its work (described in the 2.1st joint), obtains a BSIC different with the BSIC that hears on that frequency then.

Except above-mentioned requirement for iBS distribution BSIC, iSM by process selection cycle or at random decide it will be for example among 3 iBS-BSIC which distribute to a new iBS, and calculate the distribution number of times of each iBS-BSIC, thereby guarantee described for example 3 iBS-BSIC in network, evenly distribute (in order to minimize the long-term overall risk of ARFCN and BSIC being distributed to jointly iBS near each other).

2.6 neighbor list

2.6.1 the neighbor list of iBS oneself

Macrocell (also possibility and other an iBS) tabulation that iBS can receive has been sent in the RF environmental survey of being undertaken by iBS when iBS connects (seeing the 1st joint), has provided their BCCH frequency, the signal level that receives, CGI and BSIC.

The sub-district that has enough signal levels (defining threshold value in iSM) in that tabulation should be defined as the neighbor cell of described iBS.Replacedly, the neighbor cell that only the strongest that sub-district or 2 for example the strongest sub-districts can be defined as described iBS by iSM in the tabulation.ISM will beam back the neighbor list of the tabulation of a correlated frequency (ARFCN) as it to iBS.(noticing that the neighbor list that is stored in the GSM base station (BTS) only is the tabulation of the frequency of BTS broadcasting and the mobile device monitoring of indication in the zone).Another possibility has at least a macrocell to be defined as neighbours exactly.

ISM will send the tabulation of the neighbor cell that is defined as iBS to iBSC (just as conventional BSC, iBSC will be responsible for making switching and determine).This neighbor lists comprises the frequency of neighbor cell, their BSIC, LAI, CI and some other information of possibility (all obtain, see the 1st joint) from the RF environmental survey of iBS.Because be connected to several iBS of this iBSC will share identical CGI (=LAI+CI), iBSC must use another parameter except that CGI, and---sequence number of the IP address of iBS, other data relevant with internet/address or iBS---distinguishes these iBS.

ISM can only define the neighbours that the strongest macrocell is iBS, and also can define several or all macrocells that identify is the neighbours of iBS.

Other iBS that detect in RF environmental survey (see the 1st joint) and have enough signal levels are defined as the neighbours of iBS usually by iSM, and also are provided with mutual neighbours (reciprocal neighbor) definition in other iBS.These other iBS may for identical user all, other iBS that in identical (may be broad sense) building, will switch.Outside this automatically distributed, iBS user can manually use neighbours' definition of other iBS, and described other iBS are return him all and iBS of working in identical building.

As the part of optimizing phase, iBS can have a lot of defined adjacent cells, and for example all neighbor cells all are " ownership (home) macrocells ".Handoff list at first may be less, and home macro-cell itself is for example only arranged.When monitoring the link-quality of iBS calling, if mobile device is seen another very strong but initial not macrocell in the handoff list of this iBS sub-district during calling out, iSM can determine to increase even change switching target and tabulate.

Another embodiment of the invention is exactly that the neighbor list that is used to specify pattern (when mobile device is called out) is formed by following two groups:

Real neighbor list (as used in other base stations)

Disturb neighbor list.

The interference neighbor list does not really want to switch in these sub-districts.Usually, the measurement report of travelling carriage is being reported 6 neighbours the strongest.If we have neighbours and 3 " interference " neighbours of 3 " real (real) ", no matter how low field intensity is, in any case mobile device all will be reported this 6 channels.Further progress can be used " interference " neighbours' dynamic listing exactly, and (periodically) changes this tabulation termly, thereby can monitor than 6 more channels.

The advantage of this method is that mobile device can be measured potential new carrier wave for iBS.If new " interference " frequency is suitable, and with another macrocell without any interference, iBS can reconfigure to this new frequency.To upgrade neighbor list then, and define other " interference " neighbours.

2.6.2 the neighbor list of macrocell

Except their existing neighbor list, want to use the network operater of iBS to be increased to for example 3 frequencies (iBS frequency) that are reserved as the iBS special use among all macrocell BTS in his network.

For for example 3 the iBS frequencies that will use, if (very impossible) some macrocells have had 30 or more frequency in their neighbor list, in the existing neighbours' definition of in these macrocells these some must be eliminated, thereby making has 3 frequencies available for iBS, because in the BSC of most gsm system manufacturer, the maximum length of neighbor list is exactly 32 frequencies.

As summarizing in the 2.1st joint before, telecom operators (carrier) also can be used for iBS with macrocell BCCH frequency.

2.6.3 be used for the neighbor lists (neighbor cell description) of macrocell (at conventional BSC)

In must describing the neighbor cell that a lot (for example 9---see the 2nd joint) neighborhood standard, predefined iBS is increased to each macrocell in network, thereby make and to take place from the switching of macrocell to iBS.These neighbor cells are described and are stored among the BSC, and comprise the ARFCN of each adjacent cell, BSIC and CGI.CGI is made up of LAI and CI, and LAI is made up of MCC, MNC and LAC.

For reserved for example situation of 3 frequencies and 3 BSIC for iBS, 9 couples of different ARFCN/BSIC are possible.Among these ARFCN/BSIC each is to pointing among 9 iBS-CGI 1 as Target cell.Among these 9 iBS-CGI each is all shared by the more or less a large amount of iBS in a group.

Described for example 9 iBS-CGI are different in each MSC area, and they are not reused in other MSC areas yet.In a MSC area, reason owing to front explanation in the 2.3rd joint, 9 iBS-LAC that are included among these 9 iBS-CGI are also different, thereby make the iBS in MSC area split into the iBS band of position of maximum quantity (for example 9), to minimize unnecessary paging flow.

If some macrocells in MSC area (will use for example 9 different iBS-CGI therein) have had 24 or more a plurality of neighborhood, in these existing neighborhoods some must be eliminated, thereby making has 9 frequencies available for iBS, or the quantity of the iBS-CGI in that MSC area must reduce, because in the BSC of most gsm system manufacturer, maximum neighborhood quantity is exactly 32 (BSC of a principal manufacturer allows 64).

As before the 2.1st the joint in summarize the macrocell BCCH that telecom operators also can use.

2.6.4iBSC in " iBS pointer list "

For expense that minimizes hand off signaling and the use to channel resource (seeing the 3.2.1 joint) that is associated, iBSC preserves one " iBS pointer list " for the macrocell that each has iBS neighbours.It is the neighbours of macrocell that this iBS pointer list indicates which iBS (discerning uniquely by relevant data in their IP address, other internet/addresses or the sequence number of iBS).Then when the handoff request from that macrocell arrives iBSC, iBSC can be the iBS in this tabulation with the restricted number as the iBS of may switching target and need be addressed to, rather than all shared iBS that are included in the CGI in the handoff request message of addressing.

In investigation (seeing the 1st joint) to radio environment, iBS all macrocells that it can receive to the iSM report in their CGI and some parameter of these macrocells.(iSM uses this information to define which macrocell should be defined as being used for the neighbours of iBS to the iBS of macrocell switching).The macrocell that iSM will use identical information to come to be defined as the neighbours of iBS for each is now created a tabulation, and described tabulation comprises CGI and the IP address of these contiguous iBS.

Be necessary for each iBS and create the above-mentioned iBS pointer list that is used for macrocell, with optimize iBS in iBS switches signaling consumption (seeing the 3.2.3 joint) yet---, these iBS pointer lists will be than the pointer list much shorter that is used for macrocell, because the macrocell that compares, iBS have other iBS of much less usually as geographic neighbours.

2.7iBS extension of network

When the quantity of the iBS that uses in network reaches very high level, can be below adopting described special cell parameter distribution method, make paging and the expense set up in the hand off signaling I channel (the shared of CGI being caused owing to aforementioned) is reduced to the BSC level from the MSC level:

In the neighbor lists of macrocell iBS shared for example 9 CGI can differently be defined for each MSC for each BSC.Reduce the quantity of sharing the iBS of identical CGI so significantly, also therefore reduced the expense in paging and the foundation of hand off signaling I channel.

Then, at configuration phase, which MSC iBS will not only identify them in their radio environment investigation (seeing the 1st joint) adjacent macro cell belongs to, and also identifies to belong to which BSC.When network operater uses the LAC numbering plan, may be not only go out MSC from several digit recognition that begin most of for example LAC, also several digit recognition from behind go out BSC.

So in general networks, LAC must be not overlapping with the BSC area territory.

ISM has the associated databases of a LAC who uses in different B SC zone, then, as ever, iBS is linked to an iBSC (described iBSC is connected to identical MSC) as macrocell around the strongest, but, distribute to iBS for one that then will be described for example belongs to the affiliated BSC of macrocell on every side among 9 iBS-CGI.

VLR function in iBSC (seeing the 3.1.1.1 joint) has reduced paging (MTC) signaling consumption further.

Another embodiment of the invention is that along with handoff request, the coordinate of mobile device has also been comprised.In this case, iBSC will use this information to select to have the nearest iBS of identical parameters.

2.8 be used for the optimizing phase of iBS

In case iBS is configured and activates, iBS will carry out a lot of performance measurements.For example, iBS will carry out idle channel supervision, this means that if the activity of TCH time slot right and wrong, iBS will measure the interference from other iBS or macrocell mobile device.

Another method is exactly that iBS will analyze the uplink and downlink link-quality of calling out, and carry out some statistics (as average RXLEV and RXQUAL).

Based on these statistics, iBS can improve or reduce power output.For example, if chain Road Edge (margin) is lower than the appointment, the short of peak power output that reaches can increase power output.This power setting is used for travelling carriage and base station.

If there are a lot of disturb (up link or down links), iBS can select one other channel, and uses the process of for example explaining in the 2.6.1 joint that is used for " interference " neighbours.

Another embodiment of the invention is that iBS sends signal with " medium " power output.If mobile device receives poor signal, then should increase the power output of iBS, thus the signal that mobile device will obtain again.This is for the transfer of data particular importance, because receiver has descended to the susceptibility of High Data Rate.

3. the GSM process relevant with iBS

This section is described in process such in the GSM network, and wherein above-described specific iBS preassignment, shared some cell parameter, generation signaling and channel activate expense and work.

3.1 call setup

3.1.1 mobile terminal calling (MTC)

In the GSM network, when MSC receives MTC to specific mobile device, it will send paging command to all BSC of control BTS, and described BTS belongs to the following band of position: mobile device was carried out position updating process recently in this band of position.BSC will be transmitted to the BTS that all that sends paging command successively aloft on the interface to these paging command.Mobile device to the response of paging command only the BTS at mobile device real place this moment receive---paging command that other BTS sent in the described band of position still can not be heard by mobile device---and next this BTS will begin and mobile device communicates, and beam back signal (CGI with it discerns) to BSC, the channel that carries out this calling with foundation, or the like.

As previously explained, several or a lot of iBS can share identical CGI, also are identical LAC and identical CI.This means, at the MTC that is currently located at a mobile device in the iBS sub-district, can be with paging command several iBS of addressing concurrently, and can require several iBS to set up the channel that carries out this calling.Only really receive mobile device and can beam back this signal to iBSC to the iBS of the response of paging command, the iBSC every other iBSC that will require paging command to be sent to discharges the channel of having set up once more then.IBSC uses the IP address of iBS to distinguish iBS, is common because be often used as the CGI of this purposes in general networks to all iBS that relate to.

3.1.1.1 in iBSC, the VLR function of the MTC signaling that is used to optimize

In order to reduce the required signaling of MTC, iBSC has its VLR function (visitor location register device), this means when mobile device in the iBS sub-district during executing location renewal process, iBSC has preserved about the current record that is registered in which iBS sub-district of which mobile device.If the iBS sub-district of 2 mutual direct neighbors has different LAC (how to reach about this, see the 2.3.1 joint), then this will reduce the signaling consumption in mobile terminal calling (seeing the 3.1.1 joint), even in fact eliminate signaling consumption.When iBSC stored the positional information about mobile device, it only sent to paging command that iBS at the current place of mobile device, and the size that also is paging domain only in fact is 1 sub-district.This has been avoided and must have the signaling consumption that the paging mobile device is produced among the iBS that specifies LAC/CI at each, and if like this these signaling consumptions will produce because there is one group of several or a lot of iBS to share identical LAC/CI.IBSC use the IP address of the iBS in such group distinguish they and addressing they.

When mobile device leaves described iBS cell area, it is the executing location renewal process in adjacent cell.If this new sub-district itself is an iBS, then iBSC upgrades the positional information of mobile device, but in most cases new sub-district is a macrocell, rather than iBS (still, in any case be a sub-district with Different L AC---see above), this will cause the position of mobile device to be updated in MSC, the reposition of mobile device will not be notified to original BSC but MSC is current.Therefore, iBSC will leave with invalid positional information.

In order to overcome this problem, the VLR of iBSC will be regularly " poll " mobile device (being similar to regular (periodic) position updating process of GSM), thereby know that they are whether also when their nearest executing location are upgraded in the iBS cell area at place.Replacedly, because this process is also exhausting signaling and channel resource, after the mobile device inactive time section of regulation, iBSC will remove the positional information of this mobile device in its VLR database.Yet, if mobile device is also stayed in the iBS cell area, and iBSC receives MTC to it from MSC, iBSC is not about this mobile device more under the situation of detail location information, the iBS paging of operative norm, also i.e. its (seeing the 3.1.1 joint) of paging in share specifying all iBS of LAC/CGI.

Another is selected is exactly the positional information that keeps MS in the VLR of iBSC, arrives up to the next MTC to this MS.IBSC uses 2 layers of (2-tier) paging then: attempt at first paging MS in recently known iBS, and only when so unsuccessful, operative norm iBS paging (and only at this moment just deletion obvious invalid old positional information at this moment) just about this MS.

Another embodiment of the invention is exactly that iBSC is " ownership " sub-district of paging mobile device at first.In the registration of new iBS, require the user to be listed in all mobile devices (the normally mobile device number of all families) in this sub-district.In this case, iBSC at first sends the paging request to home cell, and if unsuccessful, it will send out the paging request to other iBS.

3.1.2 mobile originating (MOC)

Compare with conventional BTS, the difference of setting up by the mobile originating of iBS is, in the flow control between iBS and iBSC, the sequence number of the IP address of iBS, other internets/address related data or iBS is used as the additional identification of iBS, as described in 2.6.1,3.1.1 and 3.1.1.1 joint, because it is unique like that the CGI of iBS (it generally uses used as said purpose) is unlike in the general networks, but between several or a lot of iBS, share.So as the calling of other mobile originating, this calling is set up by iBSC and MSC.

3.2 switch

3.2.1 macrocell is to the switching of iBS

Since the neighborhood of this switching must be in BSC predefine, this switching is by a kind of switching that characteristic influenced of iBS system, wherein, the position that can be used for neighborhood (each sub-district is 32 in the BSC of most manufacturers, and each sub-district is 64 in the BSC of some manufacturers) that in described BSC, only has limited quantity.

In general networks, MS reports downlink signal strength and the BSIC that receives on its frequency in the neighbor list of current service (macrocell) BTS in its measurement report.This neighbor list (tabulation of frequency that will be monitored) is given MS by BTS on BCCH, and comprises for example 3 frequencies (iBS frequency) that specific assigned uses for iBS in network range.

Measurement report finishes in the BSC with following reference listing (neighbor lists), and described reference listing is linked to correct switching target small area with the LAC and the CI of Target cell with BSIC and the frequency of reporting.Then, when identifying a switching and require, send a channel to relevant (, only) Target cell and activate request based on the handoff algorithms of BSC.

BSC comes the addressing target sub-district with the CGI of sub-district, and described CGI is made up of LAI and CI, and globally unique sub-district ID normally.If only (for example the strongest) Target cell is an iBS, then will send a handoff request to relevant iBSC (passing through MSC).Handoff request message also comprises the CGI that switches initial sub-district (" former sub-district "), so iBSC will activate request (seeing the 2.6.4 joint) according to CGI each iBS transmitting channel in the pointer list of former sub-district of the Target cell of appointment in handoff request.

This means as long as surpass can be for the quantity of the CGI of the use of the iBS in the MSC/iBSC zone for the quantity of iBS in macrocell area, more than one iBS just is necessary for and switch activates a channel (and beam back channel activation confirmation order to iBSC), but inevitably, the mobile device of request switching only can be heard by in them.Which iBS (discerning uniquely by its IP address) in the shared CGI group (seeing the 2.6.4 joint) that identifies at macrocell " pointer list " of iBSC responds with switching detection message then, this shows that this iBS is in fact receiving this mobile device, and the iBSC indication is every other then discharges those channels (or discharging these channels when the respective standard timing expires) once more for this switches the iBS that has activated channel.

Whether iBSC should wait for before beaming back switching request acknowledgement message to MSC, all respond up to all iBS (if more than 1) with channel activation confirmation message for this switching institute addressing, or not when first iBS or the iBS that accounts for certain percentage of the iBS that is addressed have responded, just not sent switching request acknowledgement message, this is configurable.

At such macrocell in the switching of iBS, all are that the iBS of possible Target cell must activate identical channel (also i.e. identical time-gap number on same frequency) by parallel addressing, so that this is called out by pipe (take over), because in the hand off signaling standard of gsm system, require so.Therefore, in all iBS, reserved (or several) particular time-slot numbering (for example no.7 time slot) and be used for handoff request, and never be assigned to transmit other business.Be switched to the no.7 time slot of an iBS in calling after, this calling is transferred to another time slot at once in the inner switching in sub-district, is used for next handoff request to discharge the no.7 time slot.

Figure 5 illustrates and be used for the message flow of macrocell, in described switching, have 5 iBS to share same CGI in the pointer list of macrocell to the switching of iBS.

3.2.2iBS switching to macrocell

In fact iBS is the GSM handoff procedure of standard to the switching of macrocell, and do not relate to as the signaling of the inverse process of description in the 3.2.1 joint and the expense that channel activates, because when new iBS reaches the standard grade, the neighborhood of iBS can write iBSC or covering (seeing the 2.6.1 joint) by iSM.

Just will send its measurement report to iBSC by iBS by the mobile device of iBS service, signal strength signal intensity, ARFCN and BSIC to the neighbor cell that receives of report in iBSC assess.As the result that the radio environment described in the 1st joint is investigated, iBSC has the neighbor lists of each iBS, the CGI that the ARFCN of described tabulation handle report and BSIC are linked to each neighbor cell.When iBSC determines to need to switch, it will send handoff request with the CGI addressing related objective sub-district of sub-district and to this Target cell (passing through MSC).After described switching is finished, iBSC will remove at " former " (iBS) channel in the sub-district.

3.2.3iBS switching to iBS

This process is made up of the important document of two kinds of handoff procedures in addition described in 3.2.2 joint and 3.2.1 joint.In when beginning, how to discern for only Target cell this respect from the switching of iBS, it is similar to iBS described in the 3.2.2 joint to the switching of macrocell.But, Target cell no longer is a macrocell now, but another iBS, this CGI that just means present Target cell identifies single iBS no longer uniquely, but sign is shared one group of iBS of this CGI, so used the relevant portion (see 3.2.1 joint) of macrocell to the switching of iBS.Yet than the iBS pointer list much shorter of typical macrocell, because the macrocell that compares, iBS has other iBS of much less as physical neighborhood (if present) to the iBS pointer list of iBS usually usually---see the 2.6.4 joint.In fact, most iBS are switchings in the iBSC/MSC to the switching of iBS, and this just means that the former iBS sub-district that relates to belongs to identical iBSC/MSC with new iBS sub-district in switching.

Another possibility is exactly, and iBSC can handle than 32 or 64 more neighbours, and this point is very important, if some iBS can be installed in the open air, has bigger radius of society, thereby a lot of sub-district can be in neighbor list.

4.iBS location verification

Title is that the U.S. Patent application of " internet base station ", sequence number 10/280,733 has proposed to use macro cell message at the iBS website.If iBS does not obtain any macro cell message, can use additive method to verify the iBS position:

4.1GPS

IBS has integrated GPS receiver, and to iSM report coordinate.This is the simplest mode, but it has increased the cost of iBS.The user need not fail any data of people just can finish the process of registering to iSM.

4.2 the positional information of mobile handset

If mobile platform started in registration process, and have to the link of macrocell network, then mobile device can send cell information (the strongest sub-district, neighbor list etc.) or coordinate to iSM.

This can finish by the calling of setting up from iSM to the travelling carriage, download little segment information (cookie) (for example SIM tool box (toolkit)) thus make mobile device send this information to iSM.Mobile device can have integrated GPS receiver, or based on other information calculations coordinates.

Replacedly, the HLR of MSC will send nearest cell information to iSM.If the travelling carriage shutdown, then mobile device will send logout message to HLR, and the new state of indication mobile device and nearest position.

As an alternative, can connect by bluetooth between travelling carriage and the iBS or WiFi and send mobile station information.

Can use the E911-system to come to obtain coordinate, and send data to iSM from mobile device.In this case, will require mobile device to send access burst, thereby make the E911-receiver also can receive this mobile device.

With second or with minute magnitude and not with hour or day magnitude come to send information by bluetooth or WiFi, this is very important, because travelling carriage may move at the same time.

In case confirmed the position, the iBS transmitter just can be started shooting, and iBS can start working.

Those skilled in the art will be or will become clear other embodiments of the present invention and realization.All such additional embodiment and realize all being intended to be included in this specification fall within the scope of the invention and are subjected to appending claims protection.

Claims (40)

1. communication system comprises:

The radio base station that is used for cordless communication network, described base station is configured for and is connected to the center base station controller equiment, described base station is configured for by its radio receiver and collects information about other peripheral base stations, and based on described information of collecting and the proprietary requirement of other operators, described base station is configured under the help of center configuration equipment and automatically is integrated in the described network.

2. system as claimed in claim 1 also comprises:

Mobile switching centre (MSC); And

Handle the base station controller equipment of communicating by letter between described base station and the MSC, described base station controller equipment and described MSC put together, and utilize public the Internet and described base station communication.

3. system as claimed in claim 1, wherein said wireless network is selected from the group of being made up of GSM network, COMA network and 3G network.

4. system as claimed in claim 1, the combination that wherein said base station utilizes network configuration parameters to be provided with, the combination of described network parameter setting allows the interoperability completely about roaming and switching between described base station and the described network, and does not need to change the parameter setting in other existing network componentses

5. system as claimed in claim 4 when being combined in of wherein said parameter setting keeps between the base station fully interoperability, makes that disposing very a large amount of base stations with very high density becomes possibility.

6. system as claimed in claim 1, wherein said base station receiver is operated on downlink band (base station is to travelling carriage) and the uplink band (travelling carriage is to the base station).

7. system as claimed in claim 2, the described downlink band of wherein said base station scans is to find BCCH (Broadcast Control Channel) signal from other base stations, measure the intensity of the described signal that receives, the decode broadcast parameter of these base stations, described parameter is CGI (global cell identifier for example, it comprises location area code (LAC) and cell identifier (CI)), BSIC (base station identity code) and neighbor cell lists, and report described measurement to described configuration device.

8. system as claimed in claim 7 also comprises:

Configuration device, the storage of described configuration device be about the information of operator's usable frequency, and based on the described measurement of described base station automatically to the suitable radio frequency of described base station assigns.

9. system as claimed in claim 8, wherein said configuration device storage is about being used as the information of the frequency of BCCH frequency in described network, and a frequency in those frequencies of described base station assigns, in measurement, on this frequency, receive the lowest interference signal level.

10. system as claimed in claim 9, wherein said configuration device is discerned other the strongest base stations that described base station can receive, and to the such same frequency of that base station assigns: described frequency also by the most weak neighbor cell that is received of these other the strongest base stations as the BCCH frequency.

11. system as claimed in claim 1 also comprises:

Configuration device, the storage of described configuration device be about the information of operator's usable frequency, and based on described information and at random or periodical algorithms automatically to the suitable radio frequency of base station assigns.

12. system as claimed in claim 7, wherein location area code (LAC) and cell identifier (CI) be for each MSC in the described network or each BSC predefined, employed LAC in conventional base station and CI in described location area code and cell identifier and the described network make a distinction, and therefore a plurality of base stations are shared common global cell identifier (CGI) and therefore shared common LAC and CI.

13. the system as claim 12 also comprises:

Configuration device, the storage of described configuration device is about the information of the location area code (LAC) used by the different MSC of described network or BSC, and the described measurement based on described information and described base station is come from the LAC that described predefined LAC concentrates to described base station assigns, described LAC belongs to MSC or the BSC identical with following MSC or BSC, described MSC or BSC control the affiliated band of position of the strongest neighbor cell of described base station, also by described internet described base station chaining is arrived described base station controller, wherein said base station controller is connected to described identical MSC.

14. system as claimed in claim 2 also comprises:

Configuration device, described configuration device utilization comprises the geographical data bank in zip code area and/or single street, the positional information that when activating, provides in conjunction with the user of described base station, with described base station chaining to described base station controller.

15. as the system of claim 13, wherein said configuration device uses at random or periodical algorithms guarantees evenly to distribute in described predefined LAC all base stations in MSC area or BSC area territory.

16. system as claimed in claim 7 also comprises:

Configuration device, described configuration device are discerned other base stations adjacent with described base station based on described measurement report, and distribute described identical LAC to it.

17. the system as claim 13 also comprises:

Configuration device, described configuration device are discerned other base stations adjacent with described base station based on described measurement report, and distribute different LAC from described predefined LAC collection to it.

18. system as claimed in claim 1, wherein the frequency that will be used by described base station is predefined, described frequency is different with the described frequency of being used by other base stations in the described network, and is added in the neighbor list of those other base stations in the described network and during the neighbor cell among the BSC of described other base stations describes.

19. system as claimed in claim 1, wherein all BCCH frequencies of using in described network all are predefined as the possible frequency that will be used by described base station, and are increased in the neighbor list of those other base stations in the described network and during the neighbor cell in the BSC of described other base stations describes.

20. system as claimed in claim 7 also comprises:

Configuration device, described configuration device is based on the described signal level measurement report of described base station, identify other base stations adjacent with described base station, the BCCH frequency of described adjacent base station is increased in the described neighbor list of described base station, and the sub-district of described adjacent base station described be increased in the neighbor list of the described base station in described base station controller, radio frequency (ARFCN), CGI (global cell identifier) and the BSIC (base station identity code) that comprises described adjacent base station described in wherein said sub-district.

21. system as claimed in claim 1, wherein having reserved the neighbor cell of certain quantity in conventional base station controller describes, be used for of the description of described base station, and file the predefine parameter of for example described radio frequency (ARFCN), described global cell identifier (CGI) and described base station identity code (BSIC) that described base station will use is arranged as the neighbours of described conventional base station.

22. system as claimed in claim 1, it is used that wherein the base station identity code of certain quantity (BSIC) is assigned to described base station, and be written in the predefine neighbor list of all the conventional base stations in the described network, described predefine neighbor list is stored in conventional base station controller.

23. system as claimed in claim 7 also comprises:

Configuration device, described configuration device is stored the information about the base station identity code (BSIC) that uses in described network, and based on described information with from the described measurement report of described base station, to described base station assigns and in described zone, use the strongest different BSIC in other base stations of same radio frequency.

24. system as claimed in claim 7 also comprises:

Configuration device, described configuration device is based on the described measurement report from described base station, be the pointer list of the base station adjacent with this base station of each base station establishment in the described network, and this tabulation is sent to the base station controller that is connected to MSC, described base station is connected to this identical MSC.

25. as the system of claim 24, wherein said base station controller utilizes described pointer list to instruct switching from a base station to another base station, described another base station is on the pointer list of described base station.

26. system as claimed in claim 2, wherein said base station controller is preserved the record which mobile device to carry out position updating process about recently with this base station for each base station, and with those mobile devices of poll at interval clocklike, to determine that they are whether also in the overlay area of that base station, perhaps replacedly, mobile device is in inactive state in an official hour section after, delete the record of this mobile device.

27. as the system of claim 26, wherein said base station controller uses the record of described mobile device that mobile terminal calling is pointed to only certain base station.

28. system as claim 27, wherein, when described base station controller when described MSC receives handoff request message from it was connected to, it is to all such base station transmitting channel activation commands: described base station is shared in the CGI that is designated as switching target in the described handoff request message and on the described pointer list of the base station of initiating described handoff request, described base station is the CGI identification by the base station in described handoff request message.

29. system as claim 28, wherein, when described base station controller receives switching detection message with in response to the channel activation command time from the base station, the every other base station transmit signals that is sent to described same channel activation command is to discharge the described channel that has activated once more.

30., wherein, when the base station of common CGI is shared in described base station controller addressing and other such base stations, use the IP address to come the described base station of addressing as the system of claim 13.

31. as claim 13 system, wherein, when the described base station of described configuration device addressing, common CGI is shared in described configuration device and other such base stations, and uses the IP address to come the described base station of addressing.

32. as the system of claim 30, wherein, the calling of being taken in described switching is transferred to other channels from its original channel immediately, thereby can remove described original channel for further handoff request.

33. system as claimed in claim 2, wherein, described base station controller allows each sub-district more than 64 neighborhoods.

34. system as claimed in claim 1, wherein, according to the input of user about the radio coverage goal, transmit power level is adjusted between minimum value and people's value.

35. system as claimed in claim 7, wherein, the quantity of the neighbor cell that in it is measured, can receive based on described base station, transmit power level is adjusted between minimum value and maximum.

36. system as claimed in claim 1, wherein, based on average power level and bit error rate that serviced travelling carriage is reported, transmit power level is adjusted between minimum value and maximum.

37. system as claimed in claim 1, wherein, described base station is monitored signal level and the bit error rate that serviced travelling carriage is reported constantly, and continues to reselect new suitable frequency after certain time period at the channel quality of difference.

38. system as claimed in claim 1, wherein, described base station has the integrated GPS receiver that is used for determining its position.

39. system as claimed in claim 1, wherein, described base station has integrated bluetooth or WiFi transceiver, with at local and mobile communications and exchange position information.

40. one kind is the method for location area code (LAC) numbering in cordless communication network, thereby make the mobile switching centre (MSC) at least one numerical digit sign zone, control position of described LAC, and at least one other the position sign of described LAC is known the base station controller (BSC) of controlling the described band of position.

Images