CN101867966A - Method for reporting measurement report of closed user group cell - Google Patents
Method for reporting measurement report of closed user group cell Download PDFInfo
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Abstract
The invention discloses a method for reporting a measuring report of a CSG cell, which can quicken the process of switching to the CSG cell. The method comprises that when discovering that an adjacent CSG cell is a usable adjacent CSG cell in the measuring process, user equipment UE in a connected state immediately reports the measurement report containing the CSG cell to a network side.
Description
Technical field
The present invention relates to moving communicating field, be specifically related to the measurement report report method of a kind of closed user group (Closed SubscriberGroup is called for short CSG) sub-district.
Background technology
In mobile communication system, in order to satisfy the mobility requirement, when subscriber equipment (User Equipment is called for short UE) after certain sub-district and network connect, UE still needs the signal quality of its neighbor cell is measured, so that select proper cell to switch.With EUTRAN (EvolvedUniversal Terrestrial Radio Access Network, evolved Universal Terrestrial Radio Access Network network) be example, the detailed process that UE measures under the connected state is: network side will be measured control messages and send to UE, wherein, comprise the attribute of measuring sign (measurement identity abbreviates MID as), event type, measuring object and needing to measure in this measurement control messages; UE carries out parameter initialization according to the measurement sign of measuring in the control messages, and obtains each measuring object attribute and the measurement result separately in whole measuring objects of measuring in the control messages; UE carries out the incident assessment according to initialized parameter or predetermined threshold to the measurement result of each measuring object, and the duration by assessing the trigger condition of determining to satisfy in whole measuring objects measurement event is more than or equal to the measuring object of scheduled measurement triggered time length (Time ToTrigger abbreviates TTT as); UE puts into these measuring objects (this moment, measuring object corresponded to the sub-district) that satisfy trigger conditions the cell list (cellsTriggeredList) of the measurement sign of this incident correspondence; UE generates measurement report and measurement report is sent to network side according to the measurement result of the measuring object of determining, the measuring object that is comprised in the measurement report all is to obtain from the cell list of the measurement sign of this incident correspondence.
In mobile communication system, measuring object is a unit with frequency or the cell set that is positioned at frequency, measuring configuration comprises and (for example measures form that sign, measuring object, measurement report, Event triggered or periodic report) etc., wherein, measure sign and report structure (reporting configuration, the attribute that expression reports) corresponding to a certain measuring object (measurement object) and specific measurement, the different measuring of same measuring object reports the corresponding different measurement of structure to identify.Measurement configuration for event type, measurement reports structure corresponding one by one with measurement event (this moment one measure sign described a measuring object and corresponding with it measurement event), and the present measurement event that defines generally comprises the duration of trigger condition of lag parameter Hys, incident of the trigger condition of incident, the certain threshold Thresh that leaves condition, incident, incident and the side-play amount Offset of incident etc.
In order to satisfy the mobility requirement of UE under the connected state, require UE adjacent sub-district to be measured and reported the measuring object that satisfies trigger conditions, some measurement event have been defined at present to adjacent sub-district, for example, the trigger condition of definition measurement event is that the signal quality of adjacent sub-district is higher than a certain threshold value, or the signal quality of adjacent sub-district is than the high specific side-play amount of signal quality of current service cell.
For the measurement report of Event triggered, have two kinds to report form: a kind of is that the Event triggered single reports the measurement report of Event triggered (or be called); Another kind is that Event triggered periodically reports.The Event triggered single reports and is meant that network side has disposed the trigger condition of incident for certain UE, after UE detection and assessment measuring object satisfy the trigger condition of incident, the measuring object that satisfies trigger conditions is put into the cell list of the measurement sign of this incident correspondence, only report the one-shot measurement report, the measuring object that this report comprises all obtains from cell list.If in certain time of back, there is new measuring object to satisfy the trigger condition of this incident again, UE puts into new measuring object the cell list of the measurement sign of this incident correspondence, report simultaneously new measurement report once more, the measuring object that new measurement report comprises all from this moment cell list obtain, report this moment number of times still for once.
Event triggered periodically reports and is meant that network side has disposed the trigger condition of incident for certain UE, after UE detection and assessment measuring object satisfy the trigger condition of incident, the measuring object that satisfies trigger conditions is put into the cell list of the measurement sign of this incident correspondence, reporting measurement reports repeatedly, the times of reporting and the time interval dispose by network side, and the measuring object that the measurement report that at every turn reports comprises all is to obtain from the current cell list that gives the correct time.In the process that this repeatedly reports or after repeatedly reporting end, if there is new measuring object to satisfy the trigger condition of incident, UE reports number of times with replacement, new measuring object is put into the cell list of the measurement sign of this incident correspondence, according to the time interval of setting with report the orderly once more reporting measurement result of number of times, the measuring object that each measurement report comprises all is to obtain from the current cell list that gives the correct time then.
Network side can also report the periodic measurement of the strongest sub-district (reportStrongestCells) to the UE configuration, UE need report the strongest preceding several sub-districts of certain frequency signal quality that record in the specific time, be subjected to the restriction of maximum reporting subdistrict number (maxReportCells), UE reports preceding maxReportCells the strongest sub-district of this frequency signal at every turn, and the numerical value of maxReportCells is disposed by network side.
To the measurement of measuring object, different systems adopts different method of measurement, all is signal qualitys of reflection sub-district.In LTE, UE measures is the power (Reference SignalReceived Power abbreviates RSRP as, and unit is dBm) of the reference signal that receives or quality (the Reference Signal Received Quality of the reference signal that UE receives, abbreviate RSRQ as, unit is dB).In WCDMA, that UE measures is the received power (Received Signal Code Power is called for short RSCP, and unit is dBm) of Common Pilot Channel or the Ec/No of Common Pilot Channel, and unit is dB.UE needs the measurement result of more same type when comparing the signal quality of different districts.
During the modern wireless network system builds, indoor covering has become the most important thing of networking, suitable indoor covering scheme can allow network farthest bring into play its effect on the one hand, for operator creates bigger value, also can save the networking cost of operator on the other hand greatly, the high repayment of the low input of real realization.Thus, a kind of radio reception device that is called Home eNodeB (Home NB) arises at the historic moment.Home eNodeB is deployed in private sites uses such as family, group, company or school as the dedicated resources of private user, can various high-speed radio access services be provided and preferential on the rate is provided to the user, remedy existing distributed cellular radio communication system simultaneously and cover not enough contradiction.
At present, Home eNodeB mainly contains three kinds of access modules: open, sealing with mix.The Home eNodeB of open mode allows all users to insert, and the home base station cells of this moment is exactly a macrocell.The Home eNodeB of closed mode only allows to insert through the user who authorizes, as users such as kinsfolk, members of community, these are called non-public authorized user group (Closed Subscriber Group through the user who authorizes, be called for short CSG, or title closed user group), authorization message is stored in the usim card (UniversalSubscriber Identity Module, Subscriber Identity Module) of UE.The Home eNodeB of mixed mode allows all users to insert, but enjoys preferential or preferential condition for the user who belongs to this CSG user's group.Be called macrocell with respect to the sub-district under macro base station (NodeB or the eNodeB) covering, the sub-district under Home eNodeB covers is called the CSG sub-district, has CSG ID (CSG identity).UE can judge by the access module and permission CSG tabulation (AllowedCSG list) information that is stored in the usim card of Home eNodeB under the judgement CSG sub-district whether certain CSG sub-district allows oneself to insert.For a specific UE, allow the common limited amount in CSG sub-district of its access, therefore UE can local information of preserving those CSG sub-districts of once inserting, be called footprint information (footprint information), in footprint information, UE accurately and fast enters the CSG sub-district in the time of can and switching in gravity treatment.
The frequency resource that Home eNodeB can use operator to reserve as Home eNodeB specially, be called CSG dedicated frequency (dedicated carrier), also can use the frequency resource identical to be called hybrid frequency (mixed carrier) with macro base station, the minizone is distinguished with physical layer identifications PCI (Physical LayerIdentity) in the same frequency, when family base station and macro base station use same frequency, operator can reserve PCI resource (PCI split) specially for Home eNodeB, and the PCI in the PCI split is used in the CSG sub-district.There are a physical layer identifications PCI and a global cell identity CGI (Cell Global Identifier) in the CSG sub-district.Because physical layer identifications is limited, along with the magnanimity of Home eNodeB is disposed, PCI can not CSG sub-district of unique sign; And CGI is unique in PLMN (Public Land Mobile Network, the public land mobile network) scope, so UE and macro base station only get access to CGI and could uniquely determine a CSG sub-district.
Along with the magnanimity of Home eNodeB is disposed, certainly will require UE between macrocell and CSG sub-district, perhaps between CSG sub-district and CSG sub-district, switch, to satisfy the mobility demand.Because Home eNodeB has mobility as the equipment of plug and play, and magnanimity is disposed, can not concern by configuring adjacent cell between macrocell and the CSG sub-district generally speaking, be that UE is the information that can not obtain adjacent C SG sub-district when macrocell switches to the CSG sub-district, UE needs real-time detection to obtain CSG ID, the CGI of CSG sub-district, the purpose that information such as TAC (Tracking Area Code, tracking area coding), PLMN just can reach switching.Simultaneously because UE has preferential or preferential right in the CSG sub-district of some mandate, so UE need switch to appropriate C SG sub-district as soon as possible, for switching and need finish in 1 second to the CSG sub-district frequently.Yet adopting existing measurement report mechanism is not satisfy the demand switched to the CSG sub-district.
Summary of the invention
The technical problem to be solved in the present invention provides the measurement report report method of a kind of CSG sub-district, can accelerate the process of switching to the CSG sub-district.
For solving the problems of the technologies described above, the invention provides the measurement report report method of a kind of closed user group CSG sub-district, comprise: the user equipment (UE) that is in connected state is in measuring process, find that adjacent C SG sub-district is available adjacent C SG sub-district, then report the measurement report that comprises this CSG sub-district to give network side immediately.
Further, described UE reports immediately and is meant that UE finds not wait for the overtime or predetermined timer expiry of scheduled measurement triggered time length behind the available adjacent C SG sub-district, just reports described measurement report immediately.
Further, described UE only when the CSG sub-district that described available adjacent C SG sub-district is found for the first time for this UE, just reports the measurement report that comprises this CSG sub-district to give network side immediately.
Further, described available adjacent C SG sub-district is meant that UE can insert and signal quality satisfies the CSG sub-district of one of following condition: the signal quality of CSG sub-district is one or several the strongest sub-district on the frequency at this place, CSG sub-district, and number is disposed by network side; The signal quality of CSG sub-district surpasses predetermined thresholding; The signal quality of CSG sub-district is than the high predetermined side-play amount of signal quality of Serving cell.
Further, comprise the identification information of available CSG sub-district and the measurement result of this CSG cell signal quality in the measurement report that described UE reports.
Further, described UE judges by the system message that reads this CSG sub-district whether this UE can insert.
Further, whether described UE reads in the system message of this CSG sub-district under this CSG sub-district the access module of base station and/or the CSG ID of this CSG sub-district, can insert to judge this UE.
Further, the CSG sub-district that UE can insert comprises: the access module of Home eNodeB is closed or is hybrid under this CSG sub-district, and in the permission CSG tabulation of this CSG sub-district in this UE Subscriber Identity Module USIM.
Further, the CSG sub-district that can insert of UE also comprises: the access module of Home eNodeB is open under this CSG sub-district; Perhaps the access module of Home eNodeB is hybrid under this CSG sub-district, and this CSG sub-district is in the tabulation of the permission CSG in this UE usim card.
Further, in the LTE system, the identification information of the CSG sub-district that UE reports is: physical layer identifications PCI and global cell identity CGI; Perhaps PCI, CGI and tracking area the coding TAC; Perhaps PCI, CGI, TAC and public land mobile network identify PLMN.
Further, in the UTRAN system, the identification information of the CSG sub-district that UE reports is: main scrambler PSC and CGI; Perhaps PSC, CGI and lane place the coding LAC; Perhaps PSC, CGI and Routing Area Code RAC; Perhaps PSC, CGI, LAC and RAC, perhaps PSC, CGI, LAC, RAC and PLMN.
Further, the identification information of the CSG sub-district that reports of UE also comprises one or more in the following information: CSG ID, access module information, frequency information, UE allow to insert the mode information of this CSG sub-district.
Further, described access module information comprises that the access module of base station under this CSG sub-district and/or this CSG sub-district are whether in the permission CSG of described UE tabulation.
Further, described UE also detects and reports not at network side and sends to CSG sub-district on the frequency in the measurement configuration of described UE.
Further, described UE has reported this CSG sub-district, if but this CSG sub-district time spent always, then described UE does not report immediately, and reports rule to report by existing.
Adopt method provided by the invention, solved the problem that reports of CSG sub-district, accelerated reporting of appropriate C SG sub-district effectively, make network side in time to make handover decisions, accelerate the process that switch the CSG sub-district according to measurement report.
Description of drawings
Fig. 1 is the invention process flow chart;
Fig. 2 is the schematic diagram according to the network topology of the WCDMA of the embodiment of the invention one;
Fig. 3 is the network topology schematic diagram of LTE system.
Embodiment
Find by analysis, it mainly is owing to following reason that existing measurement report mechanism can't satisfy the demand of switching to the CSG sub-district: owing to adopt existing measurement configuration needs to wait until that the overtime or periodic timer expiry of TTT just can trigger measurement report, this may postpone reporting of CSG sub-district, postpone to report finally to cause satisfying the switching demand, switching can not be successful down as when edges cover for particular case.Therefore, inventive concept of the present invention is: the UE that is in connected state finds adjacent C SG sub-district if available (applicable) adjacent C SG sub-district then reports the measurement report that comprises this CSG sub-district to give network side immediately in measuring process.UE ignores the setting of TTT and periodically reports the timer time of requirement promptly not wait for the timer expiry that TTT is overtime or predetermined, as long as being arranged, available CSG sub-district then triggers measurement report immediately, can quicken like this to report process, satisfy the switching demand so that network side can in time switch.
UE is only when the CSG sub-district that this available adjacent C SG sub-district is found for the first time for this UE, just report the measurement report that comprises this CSG sub-district to give network side immediately, that is to say that UE finds that for the first time certain CSG sub-district can use, and after reporting immediately, but if this CSG sub-district time spent always, then no longer " immediately " reports, and reports rule to report by existing, reports as waiting timer is overtime again.
" available adjacent C SG sub-district " is meant that UE can insert and signal quality satisfies the CSG sub-district of one of following condition:
The signal quality of CSG sub-district is one or several the strongest sub-district on the frequency at this place, CSG sub-district, and number is disposed by network side;
The signal quality of CSG sub-district surpasses predetermined thresholding;
The signal quality of CSG sub-district is than the high predetermined side-play amount of signal quality of Serving cell.
Consider that UE does not need to read the system message of adjacent macro cell to the measurement of adjacent macro cell in the prior art, thereby may cause to determine whether this CSG sub-district is available.Therefore, in the present embodiment, UE reads the system message of this CSG sub-district and judges whether this CSG sub-district can be inserted when detecting adjacent C SG sub-district.In other embodiments, UE also can judge whether this CSG sub-district can be inserted by reading the number of C SG cell information of self preserving.
Whether UE reads the access module of affiliated base station, this CSG sub-district in the CSG cell system message and/or the CSG ID of this CSG sub-district, can insert to judge this UE.
UE reports network side with the identification information of this CSG sub-district and the measurement result formation measurement report of this CSG cell signal quality.
The CSG sub-district that UE can insert comprises: the access module of Home eNodeB is enclosed or is hybrid-type under this CSG sub-district, and in the permission CSG tabulation of this CSG sub-district in this UE usim card.
There is the right that preferentially is access in the CSG sub-district of satisfying above-mentioned condition.Further, the CSG sub-district that UE can insert can also comprise: the access module of Home eNodeB is open under this CSG sub-district, perhaps the access module of Home eNodeB is hybrid-type under this CSG sub-district, and this CSG sub-district is in the tabulation of the permission CSG in this UE usim card.
For the LTE system, the identification information of the CSG sub-district that UE reports is to make the unique identification information of determining this CSG sub-district of network side, for example comprises: PCI, CGI, TAC and PLMN.In certain embodiments, based on UE and the expression way network side agreement or acquiescence, UE also can only carry part in the above-mentioned identification information to save interface-free resources, for example, the TAC of CSG sub-district and current service cell is identical with PLMN, and then UE can only report PCI and CGI, and perhaps CSG sub-district and current service cell are under same PLMN, but the TAC difference, then UE need report PCI, CGI and TAC.If network side can effectively be distinguished the CSG sub-district and avoid PCI confusion, UE only need report PCI to represent the sign of this CSG sub-district.Except that above-mentioned information, can also carry in the following information one or more: CSG ID, access module information, frequency information, UE allow to insert the mode information (represent that this UE inserts this CSG sub-district in which way, for example insert still with member's identity and insert with non-member's identity) of this CSG sub-district.
For the UTRAN system, the identification information of the CSG sub-district that UE reports is to make the unique identification information of determining this CSG sub-district of network side, for example comprises: PSC, CGI, LAC, RAC and PLMN.In certain embodiments, based on UE and the expression way network side agreement or acquiescence, UE also can only carry the part in the above-mentioned identification information, for example, the LAC of CSG sub-district and current service cell, RAC are identical with PLMN, then UE can only report PSC and CGI, and perhaps UE reports PSC, CGI and LAC as the case may be; Perhaps PSC, CGI and RAC; Perhaps PSC, CGI, LAC and RAC, perhaps PSC, CGI, LAC, RAC and PLMN.If network side can effectively be distinguished the CSG sub-district and avoid PSC confusion, UE only need report PSC to represent the sign of this CSG sub-district.Except that above-mentioned information, can also carry in the following information one or more: CSG ID, access module information, frequency information, UE allow to insert the mode information (represent that this UE inserts this CSG sub-district in which way, for example insert still with member's identity and insert with non-member's identity) of this CSG sub-district.
Described access module information comprises the access module of base station under this CSG sub-district and/or this CSG sub-district whether in the permission CSG of described subscriber equipment tabulation.
UE is except detecting and reporting network side sends to CSG sub-district on the frequency in the measurement configuration of this UE, can also detect and report the CSG sub-district on the frequency in measuring configuration not.
As shown in Figure 1, the measurement report report method of CSG sub-district comprises:
The order of step 130 and step 120 is adjustable, promptly can find the CSG sub-district of satisfying signal quality condition earlier, and then judges respectively whether these CSG sub-districts can be inserted.
Below in conjunction with embodiment implementation procedure of the present invention is described in detail.
Embodiment one
In the WCDMA system, there is Iub interface referring to Fig. 1 in the schematic diagram of its network topology between radio network controller (RNC) and its affiliated base station, and UE is arranged in the sub-district under the base station 1.This moment, UE was in connected state, and this UE has the CSG cell list that allows access, and the detailed process that this UE measures is:
RNC sends and measures control messages to UE, wherein, comprise in this measurement control messages that measurement identifies the neighboring BS information of (the measurement event 3c of this measurement corresponding a certain measuring object of sign and different system), needs measurement, TTT etc., reporting form is that the Event triggered single reports.Measurement event 3c is meant that the adjacent cell signal quality that is positioned at different system surpasses predetermined threshold.
UE carries out parameter initialization according to the information of measuring in the control messages to this measurement sign, UE carries out the incident assessment according to the predetermined threshold of initialized parameter and incident 3c to the measurement result of different system neighbor cell, and determine that by assessing all satisfy the neighbor cell of the duration of measurement event 3c trigger condition more than or equal to TTT, UE puts into the cell list that this measurement identifies with the neighbor cell that all satisfy trigger conditions, and UE generates the measurement report of incident 3c and measurement report is sent to RNC.
During this time sometime, this UE detects the CSG sub-district that adjacent LTE system is in frequency f 1, obtain its CSG ID and access module (enclosed) by the system message that reads this CSG sub-district, if UE finds that this CSG ID is in the CSG tabulation that allows to insert, simultaneously the signal quality of this CSG sub-district on f1 preferably and surpass predetermined threshold, UE this moment reporting measurement reports (this is the measurement report that UE reports this CSG sub-district for the first time) immediately, the CGI that comprises this CSG sub-district that UE obtained in the measurement report, TAC, PLMN, PCI, the CSG ID that can also comprise this CSG sub-district, access module of this CSG sub-district (enclosed) and UE allow to insert the mode information (for example inserting with member's identity) of this CSG sub-district, also comprise the measurement result RSCP or the Ec/No of the signal quality of this CSG sub-district in the measurement report.
RNC makes handover decisions after obtaining measurement report immediately, and this UE is switched to this CSG sub-district, has realized the purpose of preferential access CSG sub-district.
Embodiment two
In the LTE system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB and core net can directly link, and also can link by femto gateway and core net, do not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in the macro base station affiliated subdistrict, is in connection status, and this UE has the CSG cell list that allows access.
Macro base station sends measures control messages to UE, wherein, comprise in this measurement control messages that measuring sign 1 (measures sign 1 respective frequencies f1 and measurement event A3 with measurement sign 2, measure sign 2 respective frequencies f2 and measurement event A3), the neighboring BS information that needs to measure, TTT etc., incident A3 is that the Event triggered single reports.Incident A3 is meant the signal quality high predetermined side-play amount of signal quality of adjacent cells than current service cell.
UE carries out parameter initialization to measuring sign 1 with measurement sign 2 according to the information of measuring in the control messages, UE carries out the incident assessment according to the predetermined offset of initialized parameter, incident A3 to the measurement result of neighbor cell, and determine that by assessing all satisfy the neighbor cell of the duration of measurement event A3 trigger condition more than or equal to TTT, UE puts into the cell list that corresponding measurement identifies with the neighbor cell that all satisfy trigger conditions, and UE generates the measurement report of incident A3 and measurement report is sent to the base station.
During this time sometime, UE detects the signal quality high predetermined side-play amount of the signal quality of the CSG sub-district (Cell 1) that is in frequency f 2 than current service cell, (UE has preserved complete information such as the position of this CSG to the information of the system message by reading this CSG sub-district or this CSG sub-district of keeping by UE, frequency, PCI, CSG ID, CGI etc., UE can infer that by precise informations such as positions this adjacent sub-district is the CSG sub-district of being preserved) obtain its CSG ID and access module (mixed mode), UE finds that this CSG ID is in the CSG tabulation that allows to insert, the signal quality of this CSG sub-district is stood out on f2 and (is come the 3rd simultaneously, front two is macrocell Cell2 and Cell3), this moment UE immediately reporting measurement be designated 2 measurement report (this is the measurement report that UE reports this CSG sub-district for the first time), the CSGID that comprises this CSG sub-district (Cell 1) that UE obtained in the measurement report, CGI, TAC, PLMN, PCI, can also comprise the access module (mixed mode) of this CSG sub-district and the mode information (for example inserting) that UE allows to insert this CSG sub-district, also comprise the measurement result RSRP or the RSRQ of the signal quality of this CSG sub-district in the measurement report with member's identity.If network side can effectively be distinguished the CSG sub-district and avoid PCI confusion, UE only need report PCI to represent the sign of this CSG sub-district.This measurement report also comprises the identification information of Cell2 on this frequency and Cell3 and to the measurement result of Cell2 and Cell3 signal quality.
During this time sometime, UE detects the signal quality high predetermined side-play amount of the signal quality of the CSG sub-district (Cell 4) that is in frequency f 1 than current service cell, obtain its CSG ID and access module (enclosed) by the system message that reads this CSG sub-district, UE finds that this CSG ID is in the CSG tabulation that allows to insert, simultaneously the signal quality of this CSG sub-district on f1 preferably and surpass predetermined side-play amount, this moment UE immediately reporting measurement be designated 1 measurement report (this is the measurement report that UE reports this CSG sub-district for the first time), the CSG ID that comprises this CSG sub-district (Cell4) that UE obtained in the measurement report, CGI, TAC, PLMN, PCI, can also comprise the access module (enclosed) of this CSG sub-district and the mode information that UE allows to insert this CSG sub-district, measurement report also comprises the measurement result of the signal quality of this CSG sub-district.This measurement report can also comprise this frequency, and other satisfy the identification information of macrocell of trigger conditions and the measurement result of signal quality.
Handover decisions is made after obtaining measurement report in the base station, and this UE is switched to this CSG sub-district (Cell 4) on the frequency f 1.
Embodiment three
In the LTE system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB and core net can directly link, and also can link by femto gateway and core net, do not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in macro base station (or Home eNodeB) affiliated subdistrict, is in connection status, and this UE has the CSG cell list that allows access.
Macro base station (or Home eNodeB) sends measures control messages to UE, wherein, comprises measurement sign 1 in this measurement control messages and measures sign 2 (measurement sign 1 respective frequencies f1 and measurement event A4; Measure sign 2 respective frequencies f2 and report the measurement configuration of strong sub-district, the strongest sub-district number (maxReportCells) network side that reports is configured to 1), the neighboring BS information that needs to measure, TTT etc., incident A4 is that the Event triggered single reports.Incident A4 is meant that signal quality of adjacent cells is higher than predetermined thresholding.Measuring sign 2 is the periodic configurations of measuring, and the neighbor cell on the UE measuring frequency f2 periodically reports the measurement result of the strongest sub-district (or cell set).
UE carries out parameter initialization to measuring sign 1 with measurement sign 2 according to the information of measuring in the control messages, UE carries out the incident assessment according to the predetermined threshold of initialized parameter, incident A4 to the measurement result of neighbor cell, and determine that by assessing all satisfy the neighbor cell of the duration of measurement event A4 trigger condition more than or equal to TTT, UE puts into the cell list that corresponding measurement identifies with the neighbor cell that all satisfy trigger conditions, and UE generates the measurement report of incident A4 and measurement report is sent to the base station.
During this time sometime, it is best at this frequency that UE detects the signal quality of the CSG sub-district (Cell 1) that is in frequency f 2, obtain its CSG ID by the system message that reads this CSG sub-district, UE finds that this CSG ID is in the CSG tabulation that allows to insert, this moment UE immediately reporting measurement be designated 2 measurement report (timer that triggers periodic report also do not have overtime this moment, this is the measurement report that UE reports this CSG sub-district for the first time), the CSG ID that comprises this CSG sub-district (Cell1) that UE obtained in the measurement report, CGI, TAC, PLMN, PCI also comprises the measurement result of the signal quality of this CSG sub-district.UE reports the timer that needs to restart this measurement sign 2 behind this measurement report.
During this time sometime, the signal quality that UE detects the CSG sub-district (Cell 2) that is in frequency f 1 is higher than predetermined thresholding, obtain its CSG ID by the system message that reads this CSG sub-district, UE finds that this CSG ID is in the CSG tabulation that allows to insert, simultaneously the signal quality of this CSG sub-district on f1 preferably and surpass predetermined threshold, this moment UE immediately reporting measurement be designated 1 measurement report (this is the measurement report that UE reports this CSG sub-district for the first time), the CSG ID that comprises this CSG sub-district (Cell2) that UE obtained in the measurement report, CGI, TAC, PLMN, PCI also comprises the measurement result of the signal quality of this CSG sub-district.
Handover decisions is made after obtaining measurement report in the base station, and this UE is switched to this CSG sub-district (Cell 2) on the frequency f 1.
In the present embodiment, do not read the access module of this CSG sub-district when UE reads the system message of CSG sub-district, this is because also do not distinguish the access module of Home eNodeB in the version of Release 8, has only closed Home eNodeB.In the version of Release 9, just introduced the notion of hybrid Home eNodeB and open Home eNodeB.
Embodiment four
In the LTE system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB and core net can directly link, and also can link by femto gateway and core net, do not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in macro base station (or Home eNodeB) affiliated subdistrict, is in connection status, and this UE has the CSG cell list that allows access.
Macro base station (or Home eNodeB) sends measures control messages to UE, wherein, comprises measurement sign 1 in this measurement control messages and measures sign 2 (measurement sign 1 respective frequencies f1 and measurement event A4; Measure the frequency f 2 of the corresponding UTRAN of sign 2 system and report the measurement configuration of strong sub-district, the strongest sub-district number (maxReportCells) network side that reports is configured to 3), neighboring BS information that need to measure, TTT etc., incident A4 is that the Event triggered single reports.Incident A4 is meant that signal quality of adjacent cells is higher than predetermined thresholding.Measuring sign 2 is the periodic configurations of measuring, and the neighbor cell on the UE measuring frequency f2 periodically reports the measurement result of the strongest sub-district (or cell set).
UE carries out parameter initialization to measuring sign 1 with measurement sign 2 according to the information of measuring in the control messages, UE carries out the incident assessment according to the predetermined threshold of initialized parameter, incident A4 to the measurement result of neighbor cell, and determine that by assessing all satisfy the neighbor cell of the duration of measurement event A4 trigger condition more than or equal to TTT, UE puts into the cell list that corresponding measurement identifies with the neighbor cell that all satisfy trigger conditions, and UE generates the measurement report of incident A4 and measurement report is sent to the base station.
During this time sometime, it is best at this frequency that UE detects the signal quality of the CSG sub-district (Cell 1) that is in frequency f 2, obtain its CSG ID by the system message that reads this CSG sub-district, UE finds that this CSG ID is in the CSG tabulation that allows to insert, this moment UE immediately reporting measurement be designated 2 measurement report (timer that triggers periodic report also do not have overtime this moment, this is the measurement report that UE reports this CSG sub-district for the first time), the CSG ID that comprises this CSG sub-district (Cell1) that UE obtained in the measurement report, CGI, LAC (Location Area Code, the lane place coding), RAC (RoutingArea Code, Routing Area Code), PLMN, PSC (Primary Scrambling Code, be called for short main scrambler), also comprise the measurement result of the signal quality of this CSG sub-district.Because UE also obtains the measurement result of the signal quality of another macrocell on this frequency, UE also comprises the measurement result and the PSC of the signal quality of this macrocell in this report.UE reports the timer of restarting this measurement sign 2 behind this measurement report.The later measurement report of reporting measurement sign 2 again behind this timer expiry such as UE, frequency f2 went up best information of adjacent cells when this measurement report comprised timer expiry.
Sometime, the signal quality that UE detects the CSG sub-district (Cell 2 and Cell3) that is in frequency f 1 all is higher than predetermined thresholding during this time, and the signal quality of Cell 2 is better than the signal quality of Cell 3.Obtain its CSG ID by the system message that reads these two CSG sub-districts, UE finds that the CSGID of Cell 2 is in the CSG tabulation that allows to insert, the base station is a closed mode under the Cell2, the CSG ID of Cell 3 is not in the CSG tabulation that allows to insert, but because the base station is a mixed mode under the Cell 3, UE can insert Cell 3, this moment UE immediately reporting measurement be designated 1 measurement report (this be the measurement report that UE reports this CSG sub-district for the first time; Or UE reported after this CSG sub-district in the past, this CSG sub-district has no longer been satisfied trigger condition and has promptly been left), the CSG ID separately that comprises the CSG sub-district (Cell 2 and Cell 3) that UE obtained in the measurement report, CGI, TAC, PLMN, PCI, and access module information is that the base station is a closed mode under the Cell2, the base station is a mixed mode under the Cell3, the CSG ID of Cell2 in the CSG tabulation that the permission of UE inserts and the CSG ID of Cell3 not in the CSG tabulation that the permission of UE inserts, also comprise the measurement result of these two CSG sub-district signal qualitys separately.
Handover decisions is made after obtaining measurement report in the base station, and this UE is switched to this CSG sub-district (Cell 2) on the frequency f 1.
Embodiment five
In the LTE system, there is the S1 interface referring to Fig. 2 in the schematic diagram of its network topology between core net and base station (macro base station), has X2 interface between the adjacent base station; Home eNodeB and core net can directly link, and also can link by femto gateway and core net, do not have X2 interface between the Home eNodeB and between Home eNodeB and the macro base station.UE is arranged in the macro base station affiliated subdistrict, is in connection status, and this UE has the CSG cell list that allows access.
Macro base station sends measures control messages to UE, wherein, comprises measurement sign 1 in this measurement control messages and measures sign 2 (measurement sign 1 respective frequencies f1 and measurement event A4; Measure sign 2 respective frequencies f2 and report the measurement configuration of strong sub-district, the strongest sub-district number (maxReportCells) network side that reports is configured to 1), the neighboring BS information that needs to measure, TTT etc., incident A4 is that the Event triggered single reports.Incident A4 is meant that signal quality of adjacent cells is higher than predetermined thresholding.Measuring sign 2 is the periodic configurations of measuring, and the neighbor cell on the UE measuring frequency f2 periodically reports the measurement result of the strongest sub-district (or cell set).
UE carries out parameter initialization to measuring sign 1 with measurement sign 2 according to the information of measuring in the control messages, UE carries out the incident assessment according to the predetermined threshold of initialized parameter, incident A4 to the measurement result of neighbor cell, and determine that by assessing all satisfy the neighbor cell of the duration of measurement event A4 trigger condition more than or equal to TTT, UE puts into the cell list that corresponding measurement identifies with the neighbor cell that all satisfy trigger conditions, and UE generates the measurement report of incident A4 and measurement report is sent to the base station.
During this time sometime, it is best at this frequency that UE detects the signal quality of the CSG sub-district (Cell 1) that is in frequency f 3, obtain its CSG ID and access module (hybrid-type) by the system message that reads this CSG sub-district, UE finds that this CSG ID is in the CSG tabulation that allows to insert, this moment, UE reported the measurement report (this is the measurement report that UE reports this CSG sub-district for the first time) of this CSG sub-district immediately, because network side does not dispose the measurement sign of this frequency to UE, UE adopts the measurement sign of acquiescence or comprises the frequency information of this CSG sub-district in measurement report, the CSG ID that also comprises this CSG sub-district (Cell 1) that UE obtained in the measurement report, CGI, TAC, PLMN, PCI, and access module information be under the Cell 1 base station be mixed mode and CSG ID Cell 1 in the permission CSG of UE tabulation, measurement report also comprises the measurement result of the signal quality of this CSG sub-district.
During this time sometime, the signal quality that UE detects the CSG sub-district (Cell 2) that is in frequency f 1 is higher than predetermined thresholding, obtain its CSG ID and access module (enclosed) by the system message that reads this CSG sub-district, UE finds that this CSG ID is in allowing the CSG tabulation, simultaneously the signal quality of this CSG sub-district on f1 preferably and surpass predetermined threshold, this moment UE immediately reporting measurement be designated 1 measurement report (this be the measurement report that UE reports this CSG sub-district for the first time; Or UE reported after this CSG sub-district in the past, and this CSG sub-district has no longer been satisfied trigger condition and promptly left), comprise CGI, the PCI of this CSG sub-district (Cell2) that UE obtained in the measurement report, also comprise the measurement result of the signal quality of this CSG sub-district.Because Cell 2 has identical PLMN and TAC with the current service cell at UE place, UE does not just carry PLMN and TAC in measurement report.UE does not report CSG ID in measurement report be the configuration mode that adopts acquiescence: UE reports CGI when reporting the CSG sub-district that can insert.
Handover decisions is made after obtaining measurement report in the base station, and this UE is switched to this CSG sub-district (Cell 2) on the frequency f l.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the measurement report report method of a closed user group CSG sub-district is characterized in that,
The user equipment (UE) that is in connected state finds that adjacent C SG sub-district is available adjacent C SG sub-district in measuring process, then report the measurement report that comprises this CSG sub-district to give network side immediately.
2. the method for claim 1 is characterized in that,
Described UE reports immediately and is meant that UE finds not wait for the overtime or predetermined timer expiry of scheduled measurement triggered time length behind the available adjacent C SG sub-district, just reports described measurement report immediately.
3. the method for claim 1 is characterized in that,
Described UE only when the CSG sub-district that described available adjacent C SG sub-district is found for the first time for this UE, just reports the measurement report that comprises this CSG sub-district to give network side immediately.
4. as claim 1 or 2 or 3 described methods, it is characterized in that,
Described available adjacent C SG sub-district is meant that UE can insert and signal quality satisfies the CSG sub-district of one of following condition:
The signal quality of CSG sub-district is one or several the strongest sub-district on the frequency at this place, CSG sub-district, and number is disposed by network side;
The signal quality of CSG sub-district surpasses predetermined thresholding;
The signal quality of CSG sub-district is than the high predetermined side-play amount of signal quality of Serving cell.
5. as claim 1 or 2 or 3 described methods, it is characterized in that,
Comprise the identification information of available CSG sub-district and the measurement result of this CSG cell signal quality in the measurement report that described UE reports.
6. method as claimed in claim 4 is characterized in that,
Described UE judges by the system message that reads this CSG sub-district whether this UE can insert.
7. method as claimed in claim 6 is characterized in that,
Whether described UE reads in the system message of this CSG sub-district under this CSG sub-district the access module of base station and/or the CSG ID of this CSG sub-district, can insert to judge this UE.
8. method as claimed in claim 4 is characterized in that,
The CSG sub-district that UE can insert comprises: the access module of Home eNodeB is closed or is hybrid under this CSG sub-district, and in the permission CSG tabulation of this CSG sub-district in this UE Subscriber Identity Module USIM.
9. method as claimed in claim 8 is characterized in that,
The CSG sub-district that UE can insert also comprises: the access module of Home eNodeB is open under this CSG sub-district; Perhaps the access module of Home eNodeB is hybrid under this CSG sub-district, and this CSG sub-district is in the tabulation of the permission CSG in this UE usim card.
10. method as claimed in claim 5 is characterized in that,
In the LTE system, the identification information of the CSG sub-district that UE reports is: physical layer identifications PCI and global cell identity CGI; Perhaps PCI, CGI and tracking area the coding TAC; Perhaps PCI, CGI, TAC and public land mobile network identify PLMN.
11. method as claimed in claim 5 is characterized in that,
In the UTRAN system, the identification information of the CSG sub-district that UE reports is: main scrambler PSC and CGI; Perhaps PSC, CGI and lane place the coding LAC; Perhaps PSC, CGI and Routing Area Code RAC; Perhaps PSC, CGI, LAC and RAC, perhaps PSC, CGI, LAC, RAC and PLMN.
12. as claim 10 or 11 described methods, it is characterized in that,
The identification information of the CSG sub-district that UE reports comprises that also one or more in the following information: CSGID, access module information, frequency information, UE allow to insert the mode information of this CSG sub-district.
13. as claim 1 or 2 or 3 described methods, it is characterized in that,
Described UE also detects and reports not at network side and sends to CSG sub-district on the frequency in the measurement configuration of described UE.
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