CN103391566A - Method and device for optimization - Google Patents
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- CN103391566A CN103391566A CN2012101415281A CN201210141528A CN103391566A CN 103391566 A CN103391566 A CN 103391566A CN 2012101415281 A CN2012101415281 A CN 2012101415281A CN 201210141528 A CN201210141528 A CN 201210141528A CN 103391566 A CN103391566 A CN 103391566A
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Abstract
The invention discloses a method and device for optimization. The method includes that in a network environment supporting D2D communication, an origin cell initiating a cell handover to UE receives D2D relevant information of the network environment; the origin cell performs the optimization on mobile parameters and/or the D2D relevant information according to the D2D relevant information and a detection result of a MRO scenario. Correctness and accuracy of statistics of the MRO scenario are improved, and then the correct and accurate optimization of the mobile parameters and/or the D2D relevant information between relevant cells is guaranteed.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of optimization method and device.
Background technology
In order to reduce the manual intervention to network, reduce O﹠M cost, improve simultaneously performance and the stability of network, third generation partner plans (Third Generation Partnership Projects, referred to as 3GPP) be organized in universal land radio access web (the Evolved Universal Terrestrial Radio Access Network of evolution, referred to as E-UTRAN) the version 8(Release-8 of system) start to introduce self-organizing network (Self-Organized Network, SON) function.E-UTRAN comprises evolution base station (evolvedNode B, referred to as eNB), its corresponding core net (Core Network, referred to as CN) comprise mobile management entity (Mobile Management Entity, referred to as MME) and gateway (Serving Gateway, referred to as S-GW) etc.Connect by the S1 interface between eNB and MME/S-GW, can connect by X2 interface between eNB.An eNB can manage one or more residential quarters (Cell).SON has comprised the contents such as moving load balance optimizing (Mobility Load Balancing optimization, referred to as MLB), mobile robustness optimization (Mobility Robustness Optimization, referred to as MRO).
MRO comprises crossing the detection of switching in evening (Too Late Handover), switching (Too Early Handover) too early, wrong cell switching (Handover to Wrong Cell) scene, the result that detects is carried out analytic statistics, the number of times of statistics reaches after some the contents such as adjustment that the mobility parameters between the neighbor cell to relevant is held consultation, to reduce handoff failure (Handover Failure, referred to as HOF) or the relevant Radio Link Failure (Radio Link Failure, referred to as RLF) of switching.
Detection for the MRO scene, mainly to receive Radio Resource control reconstruction trial (RRC re-establishment attempt according to eNB, wherein, RRC is the abbreviation of Radio Resource Control) or Radio Link Failure report (RLF Report) after Radio Link Failure indication (RLF INDICATION) message of sending, and eNB is receiving that handover report (HANDOVER REPORT) message of sending after RLFINDICATION message judges and notifies.UE is when having RLF Report to report, can complete (RRCConnectionReestablishmentComplete) or RRC in the RRC connection re-establishment connects to set up in completing (RRCConnectionSetupComplete) message and carries indication and notify eNB, eNB can ask UE to report RLF Report by user equipment information request (UEInformationRequest) message, and then UE responds (UEInformationResponse) message by user equipment information and reports RLF Report to eNB.
Fig. 1 is the schematic diagram one according to the MRO scene detection of correlation technique, and as shown in Figure 1, connection failure (HOF or RLF) has occurred subscriber equipment (User Equipment, referred to as UE) in the first residential quarter, then carries out RRC and rebuild trial in the second residential quarter.The second residential quarter is received after RRC rebuilds trial message and is known that according to the content in message UE, in the first residential quarter, connection failure has occurred, so send RLF INDICATION message to the first residential quarter.The first residential quarter knows that according to the content in message UE connection failure has occurred and carried out RRC and rebuild trial in the second residential quarter in the first residential quarter after receiving RLFINDICATION message.At this moment, the context of its preservation can be inquired about in the first residential quarter, if find that this UE is just by tangential the second residential quarter, the first residential quarter, can be judged to be this is once to switch the evening that crosses from the first residential quarter to the second residential quarter, the cell-of-origin of initiating switching is the first residential quarter (i.e. oneself), so need not send out HANDOVER REPORT message; If find that this UE is just by tangential the first residential quarter, the second residential quarter, can be judged to be this is once from the second residential quarter to the too early switching of the first residential quarter, the cell-of-origin of initiating switching is the second residential quarter, so will send out to the second residential quarter HANDOVER REPORT message, to notify the second residential quarter, switching too early occur once; If find that this UE is just by tangential the first residential quarter, the 3rd residential quarter (being different from the first residential quarter and the second residential quarter), can be judged to be this is once the switching of the mistake from the 3rd residential quarter to the first residential quarter (should be switched to the second residential quarter), the cell-of-origin of initiating switching is the 3rd residential quarter, so will send out to the 3rd residential quarter HANDOVER REPORT message, to notify the 3rd residential quarter, wrong switching occur once.
Fig. 2 is the schematic diagram two according to the MRO scene detection of correlation technique, and as shown in Figure 2, UE, in the first residential quarter, connection failure has occurred, and has then entered Idle state (idle), more then carries out RRC in the 4th residential quarter and be successfully established.The 4th residential quarter knows that according to content wherein UE, in the first residential quarter, connection failure has occurred after getting RLF Report, so send RLF INDICATION message to the first residential quarter, and carry the content in RLF Report and represent that this RLF Report connects the indication of setting up (rather than RRC connection reconstruction) from RRC.after RLF INDICATION message is received in the first residential quarter, find in message to contain the RLF Report after connection is set up from RRC, so according to the content in RLF Report, know that UE, in the first residential quarter, connection failure has occurred, carried out in addition RRC and rebuild trial (being assumed to be the second residential quarter here) in which residential quarter, which (being assumed to be the 3rd residential quarter here) cell-of-origin of the last switching of this UE is, how much time that the last switching is initiated to connection failure is, this connection failure is HOF or RLF, and the wireless measurement result when connection failure occurs, positional information when connection failure occurs etc.At this moment, the first residential quarter can judge according to the content of understanding from RLF Report (first to be supposed can judge that according to relevant information in RLF Report this connection failure is RLF here, and relevant to the last time switching, and the reason that RLF occurs is MRO problem rather than covering problem), if find that the 3rd residential quarter equals the first residential quarter, can be judged to be this is once to switch the evening that crosses from the first residential quarter to the second residential quarter, the cell-of-origin of initiating switching is the first residential quarter (i.e. oneself), so need not send out HANDOVER REPORT message; If find that the 3rd residential quarter equals the second residential quarter, can be judged to be this is once from the second residential quarter to the too early switching of the first residential quarter, the cell-of-origin of initiating switching is the second residential quarter,, so will send out to the second residential quarter HANDOVER REPORT message, to notify the second residential quarter, switching has too early occurred once; If find that the 3rd residential quarter is other residential quarter that is different from the first residential quarter and the second residential quarter, can be judged to be this is once the switching of the mistake from the 3rd residential quarter to the first residential quarter (should be switched to the second residential quarter), the cell-of-origin of initiating switching is the 3rd residential quarter, so will send out HANDOVERREPORT message to the 3rd residential quarter, to notify the 3rd residential quarter, wrong switching occur once.
To send or receive by the eNB under residential quarter when above-mentioned RLF INDICATION message, HANDOVER REPORT message specific implementation.
Yet, supporting D2D(Device to Device) in the network environment of communication, for initiating the former in the relevant situation of D2D of switching, for example UE1 and UE2 are carrying out conventional communication (as Fig. 3: the user data between UE is alternately through core net), (user data between UE is alternately without core net to switch to the D2D communication by conventional communication when the distance between them is closer, but as Fig. 4: directly carry out between UE, or as Fig. 5: via carrying out between eNB, or as Fig. 6: via carrying out in eNB); Perhaps, UE1 and UE2 are carrying out the D2D communication, switch to conventional communication by the D2D communication when the distance between them is distant; Perhaps, UE1 and UE2 are carrying out the D2D communication, are switched to another kind of D2D communication mode (conversion between communication mode as shown in Figure 4,5, 6) etc. by a kind of D2D communication mode when the change of distance between them.This will cause using existing MRO scene detection method to there will be the incorrect or inaccurate situation of testing result in the network environment of supporting the D2D communication, such as crossing switching in evening, switching too early, wrong cell switching statistics to what should not add up interior, thereby occur the mobility parameters to relevant neighboring interval is carried out incorrect or inaccurate negotiation adjustment.
Summary of the invention
The invention provides a kind of optimization method and device, to solve at least in correlation technique, use conventional MRO scene statistics method to there will be the incorrect or inaccurate problem of statistics in the network environment of supporting the D2D communication.
The embodiment of the present invention provides a kind of optimization method, is included in the network environment of supporting the D2D communication, and the cell-of-origin that UE has been initiated the residential quarter switching receives the D2D relevant information of network environment; Cell-of-origin is optimized mobility parameters and/or D2D relevant information according to the testing result of D2D relevant information and MRO scene.
Preferably, cell-of-origin is optimized and comprises mobility parameters and/or D2D relevant information according to the testing result of D2D relevant information and MRO scene: MRO self-optimizing scheme is determined according to the testing result of D2D relevant information and MRO scene in cell-of-origin, wherein MRO self-optimizing scheme comprise following one of at least: whether add up this MRO problem, whether add up respectively the relevant MRO problem MRO problem relevant with non-D2D of D2D; According to MRO self-optimizing scheme, mobility parameters and/or D2D relevant information are optimized.
Preferably, before mobility parameters and/or D2D relevant information being optimized according to the testing result of D2D relevant information and mobile robustness optimization MRO scene in cell-of-origin, also comprise: cell-of-origin is according to the handover report HANDOVERREPORT message that receives, the testing result of determining the MRO scene is switching too early or wrong cell switching, wherein, carry the D2D relevant information in HANDOVER REPORT message.
Preferably, in cell-of-origin according to the HANDOVER REPORT message that receives, the testing result of determining the MRO scene is before switching too early or wrong cell are switched, also comprise: the first residential quarter that the UE connection failure has occurred receives RLF INDICATION message, wherein, carry the D2D relevant information in RLF INDICATION message; The first residential quarter is according to the RLF INDICATION message that receives, and the testing result of determining the MRO scene is too early switching; The first residential quarter is determined to rebuild the second residential quarter of trial as cell-of-origin after the UE connection failure; The first residential quarter sends HANDOVER REPORT message to cell-of-origin.
Preferably, in cell-of-origin according to the HANDOVER REPORT message that receives, the testing result of determining the MRO scene is before switching too early or wrong cell are switched, also comprise: the first residential quarter that the UE connection failure has occurred receives RLF INDICATION message, wherein, carry the D2D relevant information in RLF INDICATION message; The first residential quarter is according to the RLF INDICATION message that receives, and the testing result of determining the MRO scene is the wrong cell switching; The first residential quarter determines to rebuild the 3rd residential quarter the second residential quarter of trial after the first residential quarter and UE connection failure as cell-of-origin; The first residential quarter sends HANDOVER REPORT message to cell-of-origin.
Preferably, before the first residential quarter that the UE connection failure has occurred receives RLF INDICATION message, also comprise: after the second residential quarter receives the RRC connection re-establishment request RRCConnectionReestablishmentRequest message of UE transmission, send RLF INDICATION message to the first residential quarter, wherein RRCConnectionReestablishmentRequest message is carried described D2D relevant information; After perhaps the second residential quarter receives the Radio Link Failure report RLF Report of UE transmission, send RLF INDICATION message to the first residential quarter, wherein UE utilizes UEInformationResponse message to carry the D2D relevant information; After perhaps the 4th residential quarter receives the RLF Report of UE transmission, send RLFINDICATION message to the first residential quarter, wherein, UE utilizes UEInformationResponse message to carry the D2D relevant information, and the 4th residential quarter is that the UE connection failure enters the residential quarter of again accessing after idle idle state.
Preferably, in the situation that MRO self-optimizing scheme is this MRO problem of not adding up, the first residential quarter does not send HANDOVER REPORT message to cell-of-origin.
Preferably, before mobility parameters and/or D2D relevant information being optimized according to the testing result of D2D relevant information and MRO scene in cell-of-origin, also comprise: cell-of-origin is according to the RLF INDICATION message that receives, the testing result of determining the MRO scene was the switching in evening, wherein, carry the D2D relevant information in RLF INDICATION message.
Preferably, the D2D relevant information comprise following one of at least: the communication mode after the communication mode before switching, switching, be used to indicate communication mode before switching and/or the communication mode after switching is the indication information of D2D communication mode.
The embodiment of the present invention provides a kind of optimization device, is applied to UE has been initiated the cell-of-origin of residential quarter switching, comprising: receiver module is used for receiving the D2D relevant information of network environment in the network environment of supporting the D2D communication; Optimize module, be used for according to the testing result of D2D relevant information and mobile robustness optimization MRO scene, mobility parameters and/or D2D relevant information being optimized.
Preferably, optimizing module comprises: determine submodule, be used for determining MRO self-optimizing scheme according to the testing result of D2D relevant information and MRO scene, wherein MRO self-optimizing scheme comprise following one of at least: whether add up this MRO problem, whether add up respectively the relevant MRO problem MRO problem relevant with non-D2D of D2D; Optimize submodule, be used for according to MRO self-optimizing scheme, mobility parameters and/or D2D relevant information being optimized.
Preferably, said apparatus also comprises: the first determination module, be used for according to the handover report HANDOVER REPORT message that receives, and the testing result of determining the MRO scene is switching too early or wrong cell switching, wherein, carry the D2D relevant information in HANDOVER REPORT message.
Preferably, said apparatus also comprises: the second determination module, be used for according to the RLF INDICATION message that receives, and the testing result of determining the MRO scene was the switching in evening, wherein, carried the D2D relevant information in RLF INDICATION message.
The present invention in the network environment of supporting the D2D communication,, for the statistics of MRO problem and to the optimization of minizone mobility parameters, not only considers the MRO scene, has also considered the D2D relevant information.Therefore, what occur when having used D2D crosses switching in evening, switching too early or wrong cell switching, can avoid its scene of MRO as routine is added up, increased correctness and the accuracy of MRO scene statistics, and then guaranteed the mobility parameters of relevant neighboring interval and/or the D2D relevant information is carried out correctly and optimize accurately.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not form improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram one according to the MRO scene detection of correlation technique;
Fig. 2 is the schematic diagram two according to the MRO scene detection of correlation technique;
Fig. 3 is the schematic diagram one according to the network environment of the support D2D communication of correlation technique;
Fig. 4 is the schematic diagram two according to the network environment of the support D2D communication of correlation technique;
Fig. 5 is the schematic diagram three according to the network environment of the support D2D communication of correlation technique;
Fig. 6 is the schematic diagram four according to the network environment of the support D2D communication of correlation technique;
Fig. 7 is the flow chart according to the optimization method of the embodiment of the present invention;
Fig. 8 is the schematic diagram according to the optimization method of the preferred embodiment of the present invention one;
Fig. 9 is the schematic diagram according to the optimization method of the preferred embodiment of the present invention two;
Figure 10 is the schematic diagram according to the optimization method of the preferred embodiment of the present invention three;
Figure 11 is the structured flowchart according to the optimization device of the embodiment of the present invention;
Figure 12 is the structured flowchart one of optimization device according to the preferred embodiment of the invention;
Figure 13 is the structured flowchart two of optimization device according to the preferred embodiment of the invention;
Figure 14 is the structured flowchart three of optimization device according to the preferred embodiment of the invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe in conjunction with the embodiments the present invention in detail.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
The embodiment of the present invention provides a kind of optimization method.Fig. 7 is the flow chart according to the optimization method of the embodiment of the present invention, as shown in Figure 7, comprises that step S702 is to step S704:
Step S702, in the network environment of supporting the D2D communication, the cell-of-origin that UE has been initiated the residential quarter switching receives the D2D relevant information of network environment.
Step S704, cell-of-origin is optimized mobility parameters and/or D2D relevant information according to the testing result of D2D relevant information and MRO scene.
In correlation technique, use conventional MRO scene statistics method to there will be the incorrect or inaccurate problem of statistics in the network environment of supporting the D2D communication.In the embodiment of the present invention, in the network environment of supporting the D2D communication,, for the statistics of MRO problem and to the optimization of minizone mobility parameters, not only consider the MRO scene, also considered the D2D relevant information.Therefore, what occur when having used D2D crosses switching in evening, switching too early or wrong cell switching, can avoid its scene of MRO as routine is added up, increased correctness and the accuracy of MRO scene statistics, and then guaranteed the mobility parameters of relevant neighboring interval and/or the D2D relevant information is carried out correctly and optimize accurately.
Flow process as shown in Figure 7, step S704 proposes to be optimized in conjunction with testing result and the D2D relevant information of MRO scene, and is not only just to be optimized according to the testing result of MRO scene.Wherein, the MRO self-optimizing scheme that is used for optimizing can have multiple, for example: whether add up this MRO problem, whether add up respectively the relevant MRO problem MRO problem relevant with non-D2D of D2D.Determine whether to revise relevant parameter according to the statistics of MRO self-optimizing scheme in follow-up optimization process, for example mobility parameters, D2D relevant information.Need to prove, as a preferred implementation, above-mentioned statistical operation can be that different counters is set, and, if a MRO problem is added up, counter values is added one certainly, if do not add up this MRO problem, counter values remains unchanged.Follow-uply according to this counter values, be confirmed whether to revise mobility parameters, D2D relevant information etc.
flow process as shown in Figure 7, before step S702, the type of the MRO scene that detects need to first be determined in the cell-of-origin that switches, consider that the cell-of-origin that switches can receive HANDOVER REPORT message, and then determine the testing result of MRO scene according to the content in HANDOVER REPORT message, therefore, can adopt following judgment mode to determine the testing result of MRO scene: when the cell-of-origin that switches receives HANDOVER REPORT message, the testing result of determining the MRO scene that this need to detect is switching too early or wrong cell switching, wherein, carry the D2D relevant information in HANDOVER REPORT message.
Above mention, the testing result of MRO scene can be determined in the cell-of-origin that switches according to HANDOVER REPORT message, at this moment, the cell-of-origin that switches can receive from the first residential quarter HANDOVER REPORT message, wherein, the first residential quarter is the residential quarter that connection failure occurs UE.Particularly, the first residential quarter needs A as follows to send this HANDOVER REPORT message to step e to cell-of-origin.
Steps A, the first residential quarter receive the RLF INDICATION message that the second residential quarter sends, and wherein, carry the D2D relevant information in RLF INDICATION message, and the second residential quarter is the residential quarter of accessing after the UE connection failure.
The MRO scene of this detection, according to RLF INDICATION message, is determined in step B, the first residential quarter, and is wherein different according to the MRO scene of this detection, three kinds of different states can occur, and corresponding step C is to step e respectively.
Step C, when the MRO of this detection scene was evening switching, self is determined as cell-of-origin in the first residential quarter, does not need to send HANDOVER REPORT message.
Step D, when the MRO of this detection scene is too early switching, the second residential quarter is determined as cell-of-origin in the first residential quarter, sends HANDOVER REPORT message to the second residential quarter.
Step e, when the MRO of this detection scene be wrong cell when switching, the first residential quarter determines that the 3rd residential quarter is as cell-of-origin, send HANDOVER REPORT message to the 3rd residential quarter, wherein, the 3rd residential quarter is other residential quarter except above-mentioned the first residential quarter and the second residential quarter.
And before steps A mentions that the MRO scene of this detection is determined according to RLF INDICATION message in the first residential quarter, after the second residential quarter receives the RRC reconstruction trial or RLF Report of UE transmission before steps A, just can trigger corresponding operating, namely to the first residential quarter, send RLF INDICATION message; Perhaps, sent RLF INDICATION message to the first residential quarter by the 4th residential quarter, the 4th residential quarter is the residential quarter of access again after UE connection failure (IDLE) state that enters the free time, and the 4th residential quarter sends RLF INDICATION message after receiving the RLF Report that UE sends to the first residential quarter.
Concrete, if the second residential quarter receives the RRC of UE transmission and rebuilds while attempting, UE utilizes RRCConnectionReestablishmentRequest message to carry the D2D relevant information, the second residential quarter obtains the D2D relevant information from RRCConnectionReestablishmentRequest message afterwards, and is carried in RLF INDICATION message and sends to the first residential quarter.
In like manner, when the second residential quarter or the 4th residential quarter receive the RLF Report of UE, UE utilizes UEInformationResponse message to carry the D2D relevant information, the second residential quarter or the 4th residential quarter obtain the D2D relevant information from UEInformationResponse message afterwards, and are carried in RLF INDICATION message and send to the first residential quarter.
In this example, UE utilizes UEInformationResponse message to carry the D2D relevant information, send it to the second residential quarter or the 4th residential quarter, consider that can there be the transmission of different indication informations, different signaling and different data UE and the second minizone or the 4th residential quarter, therefore, how UE transmits the D2D relevant information can various ways, and two kinds of preferred processing methods now are provided.
Method one
UE carries the indication of available RLF Report in RRCConnectionReestablishmentComplete or RRCConnectionSetupComplete message;
After the indication of available RLF Report is received in the second residential quarter or the 4th residential quarter, to UE, send out UEInformationRequest message, wherein, UEInformationRequest message carries RLF Report request indication;
After UE receives UEInformationRequest message, to the second residential quarter or the 4th residential quarter return to UEInformationResponse message, wherein, carry RLF Report in UEInformationResponse message, carry the D2D relevant information in RLF Report.
Method two
UE carries the indication of available D2D relevant information in RRCConnectionReestablishmentComplete or RRCConnectionSetupComplete message;
After the second residential quarter or the 4th residential quarter receive the indication of available D2D relevant information, to UE, send UEInformationRequest message, wherein, carry D2D relevant information request indication in UEInformationRequest message;
After UE receives D2D relevant information request indication, preferably, in the present embodiment to the second residential quarter or the 4th residential quarter return to UEInformationResponse message, wherein, carry the D2D relevant information in UEInformationResponse message.
In above-mentioned preferred embodiment, if the MRO self-optimizing scheme of determining when not adding up this MRO problem, the first residential quarter does not need the message to cell-of-origin transmission HANDOVER REPORT.
Except HANDOVER REPORT message, the cell-of-origin that switches can also receive RLF INDICATION message, and this moment can be according to this message judgement MRO scene.Cell-of-origin, according to the RLF INDICATION message that receives, determines that the MRO that detects scene was the switching in evening, wherein, carried the D2D relevant information in RLF INDICATION message particularly.
In the above-described embodiments, because the D2D relevant information plays important effect for the MRO scene detection, therefore, for guaranteeing the accuracy of D2D relevant information, in the message interaction process of UE and minizone, each minizone, repeatedly transmit the D2D relevant information, this step makes each residential quarter and UE for the obtaining more for convenience of D2D relevant information, and has guaranteed the accuracy of D2D relevant information.
The embodiment of the present invention is all mentioned the D2D relevant information in the whole text, this information can comprise multinomial content, for example, the switching before communication mode, the switching after communication mode, be used to indicate the switching before communication mode and/or the switching after communication mode be the indication information of D2D communication mode.Need to prove, in actual applications, the D2D relevant information is not limited to above-mentioned several contents of enumerating, also may determine according to performance of network environment, implementation environment, UE or other equipment etc. the D2D relevant information of other types.
Clearer clearer for the optimization method elaboration ground that the embodiment of the present invention is provided, now with specific embodiment, be described.
Preferred embodiment one
Compare for convenience of the MRO scene detection method that provides with correlation technique, the applied environment of this preferred embodiment one is identical with correlation technique, namely, the UE of this preferred embodiment one is also as shown in Figure 1 in connection and the switching mode of minizone, and the MRO scene detection method that the present embodiment provides mainly comprises the following steps 1) to step 5).
1) connection failure (HOF or RLF) has occurred in UE in the first residential quarter (i.e. the first residential quarter).
2) UE carries out RRC reconstruction trial in the second residential quarter (i.e. the second residential quarter), and carries the D2D relevant information in RRCConnectionReestablishmentRequest message; Or to the second residential quarter, report RLFReport, carry the D2D relevant information in UEInformationResponse message; Or the UE connection failure accesses the 4th residential quarter (i.e. the 4th residential quarter) after entering the idle state again, to the 4th residential quarter, reports RLF Report, carries the D2D relevant information in UEInformationResponse message.
3) the second residential quarter is after receiving that RRC rebuilds trial or RLF Report, or the 4th residential quarter after receiving RLF Report, according to its content as can be known UE connection failure has occurred in the first residential quarter,, so to eNB under the first residential quarter, send RLF INDICATION message, carry the D2D relevant information.
4) after under the first residential quarter, eNB receives RLF INDICATION message, can judge according to its content; As being judged to be the switching in evening, the cell-of-origin of initiating switching is the first residential quarter oneself, so need not send out HANDOVER REPORT message; As being judged to be too early switching, the cell-of-origin of initiating switching is the second residential quarter,, so will send out HANDOVER REPORT message to eNB under the second residential quarter, to notify the second residential quarter, switching has too early occurred once; As being judged to be the wrong cell switching, the cell-of-origin of initiating switching is other residential quarter that is different from the first residential quarter or the second residential quarter,, so will send out HANDOVER REPORT message to eNB under this other residential quarter, to notify it, wrong cell switching has occurred; Carry the D2D relevant information in HANDOVER REPORT message.
5) receive under the cell-of-origin of HANDOVER REPORT message that eNB is that the too early switching that once oneself causes or wrong cell switching have occurred according to message content as can be known, but also need to carry out analysis-by-synthesis according to the D2D relevant information of carrying in message, MRO self-optimizing scheme could finally be determined, for example: whether this time MRO problem is added up interior; Or to having used D2D and not used the MRO problem of D2D to add up respectively; Then optimize respectively mobility parameters and/or D2D relevant information., for crossing the switching in evening, be not send out HANDOVER REPORT message, but under cell-of-origin, eNB also should be in conjunction with could finally determining MRO self-optimizing scheme after D2D relevant information analysis-by-synthesis.
In this preferred embodiment one, after receiving under the residential quarter of RLF INDICATION message that eNB analyzes according to the contents such as D2D relevant information of carrying in message,, as determining this time MRO problem statistics interior, to eNB under the cell-of-origin that switches, do not send out HANDOVER REPORT message.
Preferably, D2D relevant information in this preferred embodiment one can comprise following one or more: be whether the relevant switching of D2D indication (the relevant switching of D2D refer to switching before or be the D2D communication mode after switching, or be all the D2D communication mode before and after switching), the communication mode before switching (namely as shown in Figures 3 to 6 each communication mode), the communication mode after switching etc.
Preferably, step 2) mention and carry the D2D relevant information in UEInformationResponse message in, its processing mode can be one of following mode.
Mode one, UE carry the indication of available RLF Report in RRCConnectionReestablishmentComplete or RRCConnectionSetupComplete message; ENB receives that the backward UE of this indication sends out UEInformationRequest message and carries RLF Report request indication; UE receives that backward eNB returns UEInformationResponse message and carries RLF Report, and comprises the D2D relevant information in RLF Report.
Mode two, UE carry the indication of available D2D relevant information in RRCConnectionReestablishmentComplete or RRCConnectionSetupComplete message; ENB receives that the backward UE of this indication sends out UEInformationRequest message and carries D2D relevant information request indication; UE receives that backward eNB returns UEInformationResponse message and carries the D2D relevant information.
Preferred embodiment two
This preferred embodiment two is realized the MRO scene detection method of UE when the RRC connection reconstruction is attempted, its network configuration and UE access and the Organization Chart that switches as shown in Figure 8, comprise that following step 1) is to step 6).
1) connection failure (HOF or RLF) has occurred in UE in the first residential quarter.
2) UE need to preserve the D2D relevant information of the last switching.
3) UE carries out RRC reconstruction trial in the second residential quarter, and carries D2D relevant information (suppose to comprise is to be the indication of the relevant switching of D2D) in the RRCConnectionReestablishmentRequest message that sends to the second residential quarter.
4) in conjunction with Fig. 1, the second residential quarter is after receiving RRCConnectionReestablishmentRequest message, according to its content as can be known UE connection failure has occurred in the first residential quarter,, so to eNB under the first residential quarter, send RLF INDICATION message, carry the D2D relevant information.
5), in conjunction with Fig. 1, after under the first residential quarter, eNB receives RLF INDICATION message, can judge according to its content; As being judged to be the switching in evening, the cell-of-origin of initiating switching is the first residential quarter oneself, so need not send out HANDOVER REPORT message; As being judged to be too early switching, the cell-of-origin of initiating switching is the second residential quarter,, so will send out HANDOVER REPORT message to eNB under the second residential quarter, to notify the second residential quarter, switching has too early occurred once; As being judged to be the wrong cell switching, the cell-of-origin of initiating switching is the 3rd residential quarter that is different from the first residential quarter or the second residential quarter,, so will send out HANDOVER REPORT message to eNB under the 3rd residential quarter, to notify it, wrong cell switching has occurred; Carry the D2D relevant information in HANDOVER REPORT message.
6) in conjunction with Fig. 1, the affiliated eNB in cell-of-origin that receives HANDOVER REPORT message is that the too early switching that once oneself causes or wrong cell switching have occurred according to message content as can be known, it is relevant that yet this time switching is D2D, after analysis-by-synthesis, decision should inferiorly not switched too early or the wrong cell switching is added up interior.
Preferred embodiment three
MRO scene detection method when this preferred embodiment three realizes that UE reports RLF Report after the RRC connection reconstruction is completed, its network configuration and UE access and the Organization Chart that switches as shown in Figure 9, comprise that following step 1) is to step 8).
1) connection failure (HOF or RLF) has occurred in UE in the first residential quarter.
2) UE need to preserve the D2D relevant information of the last switching.
3) UE carries out RRC and rebuilds successfully in the second residential quarter, and carries expression in sending to the RRCConnectionReestablishmentComplete message of the second residential quarter the indication of available RLF Report is arranged.
4) the second residential quarter after receiving RRCConnectionReestablishmentComplete message, finds that UE has available RLF Report, so by UEInformationRequest message, ask UE to report RLF Report.
5) after UE receives UEInformationRequest message, RLF Report is carried and reported the second residential quarter by UEInformationResponse message, comprise D2D relevant information (suppose to comprise is to be the relevant indication of switching of D2D) in RLF Report.
6) in conjunction with Fig. 1, after UEInformationResponse message is received in the second residential quarter, know that according to RLF Report content wherein UE, in the first residential quarter, connection failure has occurred,, so to eNB under the first residential quarter, send RLF INDICATION message, carry the D2D relevant information.
7), in conjunction with Fig. 1, after under the first residential quarter, eNB receives RLF INDICATION message, can judge according to RLF Report content wherein; As being judged to be the switching in evening, the cell-of-origin of initiating switching is the first residential quarter oneself, so need not send out HANDOVERREPORT message; As being judged to be too early switching, the cell-of-origin of initiating switching is the second residential quarter,, so will send out HANDOVER REPORT message to eNB under the second residential quarter, to notify the second residential quarter, switching has too early occurred once; As being judged to be the wrong cell switching, the cell-of-origin of initiating switching is the 3rd residential quarter that is different from the first residential quarter or the second residential quarter,, so will send out HANDOVER REPORT message to eNB under the 3rd residential quarter, to notify it, wrong cell switching has occurred; Carry the D2D relevant information in HANDOVER REPORT message.
8) in conjunction with Fig. 1, the affiliated eNB in cell-of-origin that receives HANDOVER REPORT message is that the too early switching that once oneself causes or wrong cell switching have occurred according to message content as can be known, yet again according to wherein D2D relevant information, recognize that again this time switching is that D2D is relevant, after analysis-by-synthesis, determine the ASSOCIATE STATISTICS number of times of the relevant MRO problem of D2D is added 1.
Preferred embodiment four
This preferred embodiment four realizes that UE connect to set up after completing MRO scene detection method while reporting RLF Report at RRC, its network configuration and UE access and the Organization Chart that switches as shown in figure 10, comprise that following step 1) is to step 8).
1) connection failure (HOF or RLF) has occurred in UE in the first residential quarter, and UE carries out the RRC reconstruction failure in the second residential quarter, and UE has entered the idle state.
2) UE need to preserve the D2D relevant information of the last switching.
3) UE carries out RRC and connects and to be successfully established in the 4th residential quarter, and carries expression in sending to the RRCConnectionSetupComplete message of the 4th residential quarter the indication of available RLF Report and the indication that expression has available D2D relevant information are arranged.
4) the 4th residential quarter is after receiving RRCConnectionSetupComplete message, find that UE has available RLF Report and available D2D relevant information, so to UE, send out UEInformationRequest message, carry RLF Report request indication and D2D relevant information request indication.
5) after UE receives UEInformationRequest message, RLF Report and D2D relevant information (supposing to comprise the indication of using D2D) are carried and reported the 4th residential quarter by UEInformationResponse message.
6) in conjunction with Fig. 1, after UEInformationResponse message is received in the 4th residential quarter, know that according to RLF Report content wherein UE, in the first residential quarter, connection failure has occurred,, so to eNB under the first residential quarter, send RLF INDICATION message, carry the D2D relevant information.
7), in conjunction with Fig. 1, after under the first residential quarter, eNB receives RLF INDICATION message, can judge according to RLF Report content wherein; As being judged to be the switching in evening, the cell-of-origin of initiating switching is the first residential quarter oneself, need not send out HANDOVER REPORT message; As be judged to be too early switching, the cell-of-origin (the 3rd residential quarter) of initiating switching is same with the residential quarter (the second residential quarter) that rebuilds, need to send out HANDOVER REPORT message to eNB under the second residential quarter, to notify the second residential quarter, switching too early occur once; As being judged to be the wrong cell switching, the cell-of-origin (the 3rd residential quarter) of initiating switching is different from the first residential quarter or the second residential quarter, need to send out HANDOVER REPORT message to eNB under the 3rd residential quarter, to notify it, wrong cell switching has occurred; Carry the D2D relevant information in HANDOVER REPORT message.
8) in conjunction with Fig. 1, the affiliated eNB in cell-of-origin that receives HANDOVER REPORT message is that the too early switching that once oneself causes or wrong cell switching have occurred according to message content as can be known, yet again according to wherein D2D relevant information, recognize that again this time switching is that D2D is relevant, after analysis-by-synthesis, decision should inferiorly not switched too early or the wrong cell switching is added up interior.
Based on same inventive concept, the embodiment of the present invention also provides a kind of optimization device, and this optimization device can be applied to UE has been initiated the cell-of-origin of residential quarter switching and has been used for realizing above-mentioned optimization method.Figure 11 is the structured flowchart according to the optimization device of the embodiment of the present invention, as shown in figure 11, comprises receiver module 112 and optimizes module 114, below its structure is described in detail.
Figure 12 is the structured flowchart one of optimization device according to the preferred embodiment of the invention, and as shown in figure 12, described optimization module 114 comprises: determine submodule 1142 and optimize submodule 1144, below its structure being described in detail.
Determine submodule 1142, be connected to receiver module 112, be used for the D2D relevant information that receives according to receiver module 112 and the testing result of MRO scene and determine MRO self-optimizing scheme, wherein MRO self-optimizing scheme comprise following one of at least: whether add up this MRO problem, whether add up respectively the relevant MRO problem MRO problem relevant with non-D2D of D2D; Optimize submodule 1144, be connected to definite submodule 1142 and receiver module 112, for the D2D relevant information of the MRO self-optimizing scheme of determining according to definite submodule 1142 to mobility parameters and/or receiver module 112 receptions, be optimized.
Figure 13 is the structured flowchart two of optimization device according to the preferred embodiment of the invention, as shown in figure 13, also comprise: the first determination module 116, be used for according to the HANDOVER REPORT message that receives, the testing result of determining the MRO scene is switching too early or wrong cell switching, wherein, carry the D2D relevant information in HANDOVER REPORT message.
Figure 14 is the structured flowchart three of optimization device according to the preferred embodiment of the invention, as shown in Figure 9, also comprise: the second determination module 118, be used for according to the RLF INDICATION message that receives, the testing result of determining the MRO scene was the switching in evening, wherein, carry the D2D relevant information in RLF INDICATION message.
In sum, according to the abovementioned embodiments of the present invention, a kind of optimization method and device are provided.The present invention in the network environment of supporting the D2D communication,, for the statistics of MRO problem and to the optimization of minizone mobility parameters, not only considers the MRO scene, has also considered the D2D relevant information.Therefore, what occur when having used D2D crosses switching in evening, switching too early or wrong cell switching, can avoid its scene of MRO as routine is added up, increased correctness and the accuracy of MRO scene statistics, and then guaranteed the mobility parameters of relevant neighboring interval and/or the D2D relevant information is carried out correctly and optimize accurately.
obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. optimization method is characterized in that comprising:
In the network environment of equipment D2D communication, the cell-of-origin that UE has been initiated the residential quarter switching receives the D2D relevant information of described network environment at support equipment;
Described cell-of-origin is optimized mobility parameters and/or described D2D relevant information according to the testing result of described D2D relevant information and mobile robustness optimization MRO scene.
2. optimization method according to claim 1, is characterized in that, described cell-of-origin is optimized and comprises mobility parameters and/or described D2D relevant information according to the testing result of described D2D relevant information and MRO scene:
MRO self-optimizing scheme is determined according to the testing result of described D2D relevant information and described MRO scene in described cell-of-origin, wherein said MRO self-optimizing scheme comprise following one of at least: whether add up this MRO problem, whether add up respectively the relevant MRO problem MRO problem relevant with non-D2D of D2D;
According to described MRO self-optimizing scheme, mobility parameters and/or described D2D relevant information are optimized.
3. optimization method according to claim 2, it is characterized in that, before mobility parameters and/or described D2D relevant information being optimized according to the testing result of described D2D relevant information and MRO scene in described cell-of-origin, also comprise: described cell-of-origin is according to the handover report HANDOVER REPORT message that receives, the testing result of determining described MRO scene is switching too early or wrong cell switching, wherein, carry described D2D relevant information in described HANDOVER REPORT message.
4. optimization method according to claim 3, is characterized in that, according to the HANDOVER REPORT message that receives, the testing result of determining described MRO scene is before switching too early or wrong cell are switched, also to comprise in described cell-of-origin:
The first residential quarter that described UE connection failure has occurred receives Radio Link Failure indication RLF INDICATION message, wherein, carries described D2D relevant information in described RLF INDICATION message;
Described the first residential quarter is according to the described RLF INDICATION message that receives, and the testing result of determining described MRO scene is too early switching;
Described the first residential quarter is determined to rebuild the second residential quarter of trial as described cell-of-origin after described UE connection failure;
Described the first residential quarter sends described HANDOVER REPORT message to described cell-of-origin.
5. optimization method according to claim 3, is characterized in that, according to the HANDOVER REPORT message that receives, the testing result of determining described MRO scene is before switching too early or wrong cell are switched, also to comprise in described cell-of-origin:
The first residential quarter that described UE connection failure has occurred receives RLF INDICATION message, wherein, carries described D2D relevant information in described RLF INDICATION message;
Described the first residential quarter is according to the described RLF INDICATION message that receives, and the testing result of determining described MRO scene is the wrong cell switching;
Described the first residential quarter determines to rebuild the 3rd residential quarter the second residential quarter of trial after described the first residential quarter and described UE connection failure as described cell-of-origin;
Described the first residential quarter sends described HANDOVER REPORT message to described cell-of-origin.
6. according to claim 4 or 5 described optimization methods, is characterized in that, before the first residential quarter that described UE connection failure has occurred receives RLF INDICATION message, also comprises:
After described the second residential quarter receives the vertical request of the radio resource control connection reestablishment RRCConnectionReestablishmentRequest message of described UE transmission, send described RLFINDICATION message to described the first residential quarter, wherein said RRCConnectionReestablishmentRequest message is carried described D2D relevant information; Perhaps
After described the second residential quarter receives the Radio Link Failure report RLF Report of described UE transmission, send described RLF INDICATION message to described the first residential quarter, wherein said UE utilizes user equipment information response UEInformationResponse message to carry described D2D relevant information; Perhaps
After the 4th residential quarter receives the described RLF Report of described UE transmission, send described RLF INDICATION message to described the first residential quarter, wherein, described UE utilizes UEInformationResponse message to carry described D2D relevant information, and described the 4th residential quarter is that described UE connection failure enters the residential quarter of again accessing after idle idle state.
7. according to claim 4 or 5 described optimization methods, is characterized in that, in the situation that described MRO self-optimizing scheme is this MRO problem of not adding up, described the first residential quarter does not send described HANDOVER REPORT message to described cell-of-origin.
8. optimization method according to claim 2, it is characterized in that, before mobility parameters and/or described D2D relevant information being optimized according to the testing result of described D2D relevant information and mobile robustness optimization MRO scene in described cell-of-origin, also comprise: described cell-of-origin is according to the RLF INDICATION message that receives, the testing result of determining described MRO scene was the switching in evening, wherein, carry described D2D relevant information in described RLF INDICATION message.
9. any one or optimization method claimed in claim 8 according to claim 1 to 5, it is characterized in that, described D2D relevant information comprise following one of at least: the communication mode after the communication mode before switching, switching, the communication mode and/or the communication mode after described switching that are used to indicate before described switching are the indication informations of D2D communication mode.
10. an optimization device, be applied to UE has been initiated the cell-of-origin that switch residential quarter, it is characterized in that comprising:
Receiver module, be used in the network environment of support equipment to equipment D2D communication, receives the D2D relevant information of described network environment;
Optimize module, be used for according to the testing result of described D2D relevant information and mobile robustness optimization MRO scene, mobility parameters and/or described D2D relevant information being optimized.
11. optimization device according to claim 10, is characterized in that, described optimization module comprises:
Determine submodule, be used for determining MRO self-optimizing scheme according to the testing result of described D2D relevant information and described MRO scene, wherein said MRO self-optimizing scheme comprise following one of at least: whether add up this MRO problem, whether add up respectively the relevant MRO problem MRO problem relevant with non-D2D of D2D;
Optimize submodule, be used for according to described MRO self-optimizing scheme, mobility parameters and/or described D2D relevant information being optimized.
12. optimization device according to claim 11, it is characterized in that, also comprise: the first determination module, be used for according to the handover report HANDOVER REPORT message that receives, the testing result of determining described MRO scene is switching too early or wrong cell switching, wherein, carry described D2D relevant information in described HANDOVER REPORT message.
13. optimization device according to claim 11, it is characterized in that, also comprise: the second determination module, be used for according to the RLF INDICATION message that receives, the testing result of determining described MRO scene was the switching in evening, wherein, carry described D2D relevant information in described RLF INDICATION message.
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| CN111566982A (en) * | 2018-01-12 | 2020-08-21 | 高通股份有限公司 | Enhancing physical layer performance by inter-service information |
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