CN103856980A - Method of reporting connection setup failure and user equipment - Google Patents

Abstract

The invention provides a method of reporting connection setup failure and user equipment. The method of reporting connection establishment failure comprises the steps: in a wireless communication network, the user equipment is connected to a cell served by a base station from a wireless resource control idle state; when the wireless resource control connection setup is tried and the base station carries out a random access channel course, the wireless resource control connection setup is failed, and the user equipment records failure event reporting when the random access channel course is failed; and in a wireless resource control connection state, the failure event reporting is sent to the wireless communication network, and the failure event reporting comprises information related to the wireless resource control connection setup trying. Through the method of reporting connection setup failure and the user equipment, the network can be better rectified.

Description

Connect and set up failure reporting method and subscriber equipment

Technical field

The present invention has about turkey report (failure event reporting), and especially has the turkey report of setting up unsuccessfully (initial connection setup failure) about initial connection.

Background technology

Self-organizing (self-organization) is the process that presents structure or pattern in a kind of system, in this process, not only there is no centralization (central authority) but also there is no external factor by planning in fact imposing.With 3G (Third Generation) Moblie cooperative programme (3 ^rdgeneration Partnership Project, 3GPP) consistent, MANET (self-organization network, SON) vision is compared with the radio access network with before, and following radio access network is easier to planning, configuration, management, optimizes and repair.In series of standards in 3GPP the 8th version (Release-8) specification, all write SON.The base station newly adding should be self-configuring (self-configured), with consistent with " plug and play (plug-and-play) " normal form, and network performance and radio condition that base station in all working is arrived are according to the observation carried out regular self-optimizing (self-optimization) to parameter and algorithm.In addition, waiting in permanent solution, can trigger selfreparing (self-healing) mechanism, be used for the device powers down (outage) that temporary transient compensation detects.

In 3GPP network, comprise mobile Robust Optimization (Mobility Robustness Optimization, MRO) mobile optimization is at enode b (evolved-Node B, eNB) reactivity (reactive) self-optimization function of carrying out in, be used for optimizing switching (handover, HO) parameter.For instance, eNB need to optimize UE and measure configuration and HO algorithm, to find acceptable or alap HO problem rate, and finds balance table tennis rate or HO to lead.Cross in slow HO problem one, before switching starts or in handover process, in cell-of-origin there is connection failure in (source cell), and UE attempts to re-establish radio link in the community of Target cell (starting if switch) or another non-cell-of-origin (not yet starting if switch) and connects.In a too early HO problem, just there is connection failure from cell-of-origin successful switch to Target cell or handover process, UE attempts to re-establish in cell-of-origin radio link and connects.In a wrong cell HO problem, just there is connection failure from cell-of-origin successful switch to Target cell or handover process, UE attempts to re-establish radio link in Yi community, Qie Fei Target cell, non-cell-of-origin and connects.

Occurring as RLF or handoff failure (handover failure, etc. HOF) after failure, if UE can find another suitable cell with identical RAT, UE can attempt to carry out radio resource control (Radio Resource Control, RRC) and connects and re-establish process.According to existing the 9th version (Rel-9), re-establish after trial and success, the Serving cell that network can be informed the previous UE of eNB by X2RLF instruction process, this eNB calculates to realize mobile optimization based on instruction.In the tenth version (Rel-10), UE also can carry out RLF report after RRC connects foundation, be RRC connect re-establish failure (may due to unripe) after and follow-up Non-Access Stratum (non-access stratum, NAS) while recovering (recovery) success.

But network cannot associate the UE context (context) in follow-up RLF report and previous Serving cell.Therefore, if 3GPP, as aforesaid way operates, has repetition bookkeeping (double bookkeeping) problem undoubtedly.First, re-establish trial because RRC connects, statistical value can upgrade; Re-establish process failure if RRC connects, UE carries out RRC connection and sets up after process, and according to the RLF report of UE, statistical value can upgrade again.Method in the tenth version of the 9th version and recommendation is also not exclusively compatible.Above-mentioned repetition bookkeeping problem can cause unsuccessfully statistical value insincere, and the MRO that may make the mistake operation.

While occurring unsuccessfully, the UE information known to content and the network of RLF report is for playing vital effect for failed definite corresponding correct operation.Concerning some failure, optimal correct operation is non-MRO operation, as interference coordination configures or changes power control etc.Because network has been known the UE context in previous Serving cell, as the cell-radio network temporary identifier of UE (Cell Radio Network Temporary Identity, C-RNTI), should find and a kind ofly network Given information and RLF report can be carried out to relevant scheme, to avoid repetition bookkeeping, and improve SON MRO determine.

Another potential problems are that RLF report may just can be sent in base station very late (as unsuccessfully occurred after one day).The long time can not preserved by the UE context of non-service UE (non-served) and C-RNTI in general base station, and to be used for storing the storage space of foregoing limited in general base station.

Summary of the invention

In view of this, the present invention proposes a kind of connection to set up failure reporting method and subscriber equipment.

The present invention proposes a kind of connection to set up failure reporting method, comprising: in cordless communication network, and the community that subscriber equipment is served in radio resource control idle condition base station to be received; Radio resource control connection set up attempt in while carrying out Random Access Channel process with described base station, detect that radio resource control connection sets up unsuccessfully, wherein said subscriber equipment records turkey report in the time that described Random Access Channel process is failed; And at radio resource control connection state, described turkey report being sent to described cordless communication network, wherein said turkey report comprises the information of setting up trial about described radio resource control connection.

The present invention separately proposes a kind of subscriber equipment, comprising: radio resource control connection administration module, is used for making described subscriber equipment in radio resource control idle condition cordless communication network Zhong to be received community; Turkey administration module, is used for, in the time that described subscriber equipment carries out Random Access Channel process with base station in the foundation of radio resource control connection is attempted, detecting the failure of Random Access Channel process, and records turkey report; And transmitter, be used for setting up after radio resource control connection at described subscriber equipment, at radio resource control connection state, described turkey report is sent to described cordless communication network, wherein said turkey report comprises the information of setting up trial about described radio resource control connection.

By utilizing the present invention, network can carry out correct operation better.

Other embodiment and advantage are below described in detail in detail.This part content is not construed as limiting the present invention, and the scope of the invention is limited by claim.

Brief description of the drawings

By reading following embodiment and with reference to accompanying drawing, the present invention can be understood completely, wherein:

Fig. 1 is the schematic diagram according to an embodiment of the invention with turkey report and relevant cordless communication network.

Fig. 2 is the simplification block schematic diagram of subscriber equipment according to an embodiment of the invention.

Fig. 3 is the schematic diagram of the first embodiment of report turkey and relevant information.

Fig. 4 is the schematic diagram of the second embodiment of report turkey and relevant information.

Fig. 5 is the schematic diagram of the 3rd embodiment of report turkey and relevant information.

Fig. 6 is the schematic diagram of the 4th embodiment of report turkey and relevant information.

Fig. 7 is that subscriber equipment detects and report the flow chart of failure event method according to an embodiment of the invention.

Fig. 8 is that the flow chart of failure event method is processed in base station by relevant information according to an embodiment of the invention.

Fig. 9 is the schematic diagram that due to switching command too early, HOF between RAT is reported to according to an embodiment of the invention to network in cordless communication network 900.

Figure 10 be according to an embodiment of the invention in cordless communication network 1000 due to cross slow switching command by and between RAT HOF report to the schematic diagram of network.

Figure 11 is the schematic diagram that RLF between RAT is reported in cordless communication network 1100 according to an embodiment of the invention to source network.

Figure 12 is the schematic diagram that RLF between RAT is reported in cordless communication network 1200 according to an embodiment of the invention to objective network.

Figure 13 is the schematic diagram that HOF/RLF between RAT is reported in cordless communication network 1300 according to an embodiment of the invention to the network that triggers turkey.

Figure 14 is the flow chart that sends according to an embodiment of the invention RLF between RAT in cordless communication network.

Figure 15 is the flow chart that sends according to an embodiment of the invention HOF between RAT in cordless communication network.

Figure 16 is the schematic diagram that connects an embodiment who sets up failure reporting in cordless communication network.

Figure 17 is the schematic diagram of an embodiment of RACH process and RACH process failure reporting.

Figure 18 connects the flow chart of setting up failure reporting method according to an embodiment of the invention.

Embodiment

In the middle of patent specification and claim, use some vocabulary to censure specific assembly.Person with usual knowledge in their respective areas should understand, and hardware manufacturer may be called same assembly with different nouns.Patent specification and claim are not used as distinguishing the mode of assembly with the difference of title, but the difference in function is used as the criterion of distinguishing with assembly.In the whole text, in the middle of specification and claims, be open term mentioned " comprising " or " comprising ", therefore should be construed to " comprise but be not limited to ".In addition, " coupling " word comprises directly any and is indirectly electrically connected means at this.Therefore, be coupled to one second device if describe a first device in literary composition, represent that this first device can directly be electrically connected in this second device, or be indirectly electrically connected to this second device through other devices or connection means.

Below be described as preferred embodiment of the invention process, and some embodiment is illustrated by accompanying drawing.

Fig. 1 is the schematic diagram according to an embodiment of the invention with the cordless communication network 100 of turkey report and correlation.Cordless communication network 100 comprises multiple base stations (eNB101, eNB102 and eNB103) and user equipment (UE) 104.When UE104 is initial, provide service by the eNB101 that is positioned at community 111, and connect (RRC_CONNECTED) state in RRC.After a while, UE104 detects RLF, and records RLF radio signaling metrical information before for follow-up report (step 121).Detect after turkey, UE104 rests on connection status and carries out community selection.Find behind suitable community, UE104 attempts to carry out RRC and connects the process that re-establishes.For instance, UE104 selects community 112, and carries out RRC by eNB102 and connect and re-establish process (step 122).It is that one is fast and generally by local radio access network (Radio Access Network that RRC connects the process that re-establishes, RAN) carry out the process of (mostly-RAN-local), and after being ready to, Zhi community 112 carries out, as only carried out in the time that eNB102 has had UE contextual information.For instance, if UE104 attempts to re-establish connection with its previous be connected same base eNB101, if or eNB101 in advance UE contextual information is passed to eNB102 and eNB102 is ready to, RRC connect re-establish process will be successful.But in other embodiment, the contextual information of UE may not too be known in Target cell at some.The RRC connection of UE re-establishes request and can comprise UE identifying information (identification information), as the C-RNTI of UE and the previous cell identifier (identity, ID) that had connected community of UE.

Connect and re-establish in process at RRC, eNB102 sends to RLF instruction and UE identifying information by X2 interface the eNB101 of previous service.Re-establish process failure if RRC connects, UE104 changes into RRC free time (RRC_IDLE) state by its state from RRC connection status, and carries out community and select process.Find behind suitable community, UE104 attempts to carry out RRC and connects the process of setting up.As a rule, UE can select to connect and re-establish identical community with its trial RRC.In one embodiment, re-establish process failure if RRC connects, by relevant information, { X} sends to UE104 to eNB102, and wherein { X} can identify any information that RRC connects the UE that re-establishes process failure to relevant information.

In the embodiment shown in Fig. 1, UE104 selects community 112 and carries out RRC by eNB102 to connect the process (step 123) of setting up.Be connected with RRC the process of re-establishing and compare, RRC connection is set up process and is related to a greater degree core network, and the slightly longer time of cost.But RAN does not have first standby knowledge (prior knowledge) to UE, and owing to not offering RAN relevant information, RAN does not also know whether UE previously connected.In fact, RAN None-identified UE, therefore UE can be assigned with new C-RNTI.This is applicable to too RRC and connects and re-establish process failure and NAS recovers to trigger the situation that RRC connects the process of setting up.

Connect and set up in process at RRC, UE104 informs that eNB102 has an available RLF report.Receive after the information request of eNB102, by RLF report and relevant information, { X} sends to eNB102 to UE104.In one embodiment, based on relevant information, { X}, eNB102 can determine previous UE identifying information.In step 124, eNB102 reports by X2 interface the RLF receiving the eNB101 that sends to previous service together with previous UE identifying information.Above-mentioned information can make the UE that eNB101 identification is relevant with previous RLF turkey, and wherein turkey is indicated to eNB101 by X2 interface in RRC connection re-establishes process by eNB102.Based on the information providing, eNB101 can be relevant to the previous UE contextual information that previously X2RLF report is indicated and eNB101 is stored by X2RLF report.

In another embodiment of Fig. 1, UE104 adopts another kind of RAT (step 125).Attempt by eNB103 carry out RRC connect set up process (step 126) before, UE104 may rest on another kind of RAT in long time.Although UE104 can retain RLF information for follow-up report, due to supposition, eNB101 has abandoned stored UE context at this moment, so think relevant information { X} no longer fresh (fresh) and dying on.Thus, in step 127, eNB103 only sends to eNB101 by RLF report, and does not send UE identifying information.Or UE104 can indicate the previous RRC of eNB103 to connect failure of the process that re-establishes, and eNB103 sends to eNB101 by above-mentioned instruction together with RLF report.Based on above-mentioned instruction, eNB101 still can be relevant to previously X2RLF instruction by X2RLF report, or the repetition bookkeeping of the event that at least averts failure.

It is a kind ofly can identify self so that the Optimization Progress of the discernible hypothesis of UE context based on UE that RRC connects the process that re-establishes.On the other hand, set up in process in the RRC connection as moved and redirect (mobility with redirection), RAN does not also know whether UE had previously connected or where UE had previously been connected to.Therefore, the advantage that proposes a kind of scheme based on relevant comprises: a) this programme is backwards-compatible with other scheme based on X2RLF indication information, and can out-of-date (future proof); And b) this programme can combine the information of information known network and UE report in turkey report, thereby ensure the quality of products, and reduce the demand to the report of UE turkey, because the known information of network does not need UE to report.Wherein, turkey can be RLF, HOF or Random Access Channel (Random Access Channel, RACH) failure.Said circumstances all can be applied this programme because said circumstances all can cause by mobility problem, and all may carry out a RRC and connect the process that re-establishes, and if a RRC connect and re-establish process failure, connect by NAS triggering following RRC the process of setting up.

Fig. 2 is the simplification block schematic diagram of user equipment (UE) 201 according to an embodiment of the invention.UE201 comprises memory 211, processor 212, transceiver 213, and wherein transceiver 213 is coupled to antenna 214.UE201 also can comprise multiple modules, as the measurement module 215 for carrying out radio signal measurement, for detection of turkey and manage the turkey administration module 216 of turkey report, and be connected the RRC connection management module 217 of foundation (re-establishing) with RRC for carrying out community selection (selecting again).Above-mentioned different module is functional module, and can pass through software, firmware, hardware or its combination and realize.In the time being carried out by processor 212 (as by executive program code 218), above-mentioned functions module can make UE carry out corresponding function.Base station can have similar structures, comprises multiple functional modules, to support correlation function.In one embodiment, transceiver 213 can be transmitter, is used for turkey report to send to cordless communication network.

Fig. 3 is the schematic diagram of reporting the first embodiment of turkey and relevant information in cordless communication network 300.Cordless communication network 300 comprises one eNB-eNB301, two eNB-eNB302 and UE303.When beginning, UE303 is in RRC connection status, and connects by the RRC setting up the service eNB 301 that is positioned at Serving cell with it and communicate (step 311).Connect by RRC, eNB301 stores UE contextual information, and the identifying information of the UE303 that wherein UE contextual information connects with RRC is relevant.For instance, UE identifying information can comprise the full message authentication code (Message Authentication Code for Integrity, MAC-I) that C-RNTI, community ID and RRC connect.In step 321, UE303 detects the turkey as RLF after a while.UE303 records the radio signal metrical information about RLF turkey, for follow-up report.RLF report can comprise that RLF previous radio signal occurs and measures, as Reference Signal Received Power (Reference Signal Received Power, RSRP) measurement/Reference Signal Received Quality (Reference Signal Received Quality, RSRQ) is measured.UE303 rests on RRC connection status and carries out community selection.

In step 331, UE303 starts to carry out RRC by eNB302 and connects and re-establish process, and RRC is connected and re-establishes request (RRC connection re-establishment request) and send to eNB302.RRC connects the UE identifying information that the request of re-establishing comprises that previous RRC connects, as previous C-RNTI, previously community ID and previous MAC-I.Receive RRC connection and re-establish after request, eNB302 sends to eNB301 by X2 interface by RLF instruction, and wherein RLF instruction comprises previous UE identifying information, so that eNB301 can identify corresponding UE.But RLF instruction does not comprise actual RLF report, connects because not yet set up safe RRC between UE303 and eNB302.

In the demonstration example shown in Fig. 3, before re-establishing trial in RRC connection, eNB302 is not yet ready to, and re-establishes process failure so RRC connects.In step 333, eNB302 re-establishes refuse information (RRC connection re-establishment reject message) by RRC connection and sends to UE303.In one embodiment, RRC connects and re-establishes refuse information and can comprise that { X}, wherein { X} can be positioned at new information element (Information Element, IE) to relevant information to relevant information.{ X} can be eNB302 and is being used for identifying after a while any information of UE303 relevant information.Receive RRC connection and re-establish after refuse information, UE303 enters RRC idle condition in step 341.After a while, NAS triggers immediately RRC connection and sets up process.In general,, if UE303 does not leave immediately, eNB302 is still the target BS of UE303.

In step 351, UE303 carries out RRC by eNB302 and connects the process of setting up.RRC connects and sets up in process, UE303 and eNB302 carry out down links at different levels (downlink, DL) and up link (uplink, UL) synchronous, consult and configuration, and finally set up new RRC connection.Offer RAN/eNB302 owing to not having relevant information, RAN/eNB302 does not also know whether UE303 had previously connected and failure.Therefore, UE303 can be assigned with new C-RNTI.After connecting and setting up process and complete, in step 361, RRC connection setup complete message (RRC connection setup complete message) is sent to eNB302 by UE303.Above-mentioned RRC connection setup complete message can indicate UE303 to have available RLF report to eNB302.In step 362, UE information request (UE information request message) is sent to UE303 by eNB302, to ask UE303 to send available RLF report.In step 363, info response message (information response message) is sent to eNB302 by UE303, and wherein info response message comprises RLF report and relevant information { X}.

{ after X}, eNB302 can based on relevant information, { X} identifies UE303 to receive RLF report and relevant information.Clearer and more definite, eNB302 is connected and is re-established refuse information { X} sends to UE303 (step 333), and UE303 sends it back identical relevant information { X} to eNB302 (step 363) by relevant information by RRC.{ X} was to previously UE identifying information (connected and re-established request receiving by the RRC in step 331) was unique relevant for relevant information.Thus, eNB302 can identify UE303 and obtain previous UE identifying information.In step 364, the RLF report receiving is sent to previous service eNB 301 by eNB302.In addition, eNB302 sends to eNB301 by X2 interface by the previous UE identifying information of UE303 (as previous C-RNTI, previously community ID and previous MAC-I).

Based on UE identifying information, eNB301 can be correlated with the RLF report receiving with the previous RLF instruction of the identical UE303 receiving in step 332, and with eNB301 in the previous UE context dependent that stores, to avoid repetition bookkeeping.In addition, the measurement result that eNB301 comprises in can reporting based on RLF, makes better MRO and determines.Relevant by adopting, UE303 adds in RLF report, because network has been known above-mentioned information without track record identifying information or by UE identifying information.In general, UE end is more simply better, and network terminal should be born somewhat complex design more.{ X} can be any information for identifying UE to relevant information, even can be a part for UE identifying information itself.

Fig. 4 is the schematic diagram of reporting the second embodiment of turkey and relevant information in cordless communication network 400.Cordless communication network 400 comprises one eNB-eNB401, two eNB-eNB402 and UE403.Fig. 4 and Fig. 3 are similar.When beginning, between UE403 and eNB401, exist RRC to be connected (step 411), and be connected to eNB402 after detecting as the turkey (step 421) of RLF.In the demonstration example shown in Fig. 4, adopt the specific demonstration example of relevant information.In step 431, UE403, based on some RACH resource, on the RACH opportunity in certain System Frame Number (System Frame Number, SFN), carries out RACH process by eNB402, to carry out RACH transmission.Wherein, RACH resource is as RACH code (preamble code) above.After RACH trial and success, in step 432, UE403 connects by RRC the request of re-establishing and sends to eNB402.Wherein, RRC connects the request of re-establishing and comprises UE identifying information when UE403 had previously been connected with eNB401.In step 433, eNB402 sends to eNB401 by X2 interface by RLF instruction.In RLF instruction, also can comprise UE identifying information, so that eNB401 identifies corresponding UE.

Because eNB402 is not yet ready to, it is failed that RRC connects the process that re-establishes.In step 434, eNB402 re-establishes refuse information by RRC connection and sends to UE403.Step 441～462 in Fig. 4 are similar with step 341～362 in Fig. 3.In step 463, info response message is sent to eNB402 by UE403.Wherein, info response message comprises the relevant information { RACH resource } that RLF report and successful RACH attempt.Because RACH resource is general unique relevant to UE403, eNB402 can be by above-mentioned relevant information identification UE403.Receive after RLF report and relevant information { RACH resource }, eNB402 can identify based on relevant information { RACH resource } the previous UE identifying information of UE403.In step 464, eNB401 receives the previous UE identifying information (as previous C-RNTI, previously community ID and previous MAC-I) of RLF report and UE403.Based on UE identifying information, eNB401 can determine that the previous RLF instruction of the RLF report receiving and the same UE403 receiving in step 433 is relevant, to avoid repetition bookkeeping.In addition, eNB401 can the measurement result based on comprising in RLF report make MRO decision better.

In a specific demonstration example, during RRC connects, UE403 receives relevant information from the first base station eNB 401.Relevant information can be unique the classification of identification UE or UE, wherein a class UE uses same or analogous parameter.For instance, UE403 receives relevant information, and wherein relevant information is included in the new IE that eNB401 provides by RRC message.UE403 sends to eNB402 by relevant information and turkey report subsequently, and above-mentioned relevant information and turkey report send to eNB401 subsequently.

In another specific demonstration example, the second base station and the first base station can be same base station.For instance, UE is first connected on the first community of serving the first base station, and the second community of serving by same base subsequently or even same community are carried out RRC and connected the process of setting up.

Fig. 5 is the schematic diagram of reporting the 3rd embodiment of turkey and relevant information in cordless communication network 500.Cordless communication network 500 comprises one eNB-eNB501, two eNB-eNB502 and UE503.Fig. 5 and Fig. 3 are similar.When beginning, between UE503 and eNB501, exist RRC to be connected (step 511), and be connected to eNB502 after detecting as the turkey (step 521) of RLF.But, in the demonstration example shown in Fig. 5, in the time that RRC connection re-establishes process failure, eNB502 is not for UE503 provides any relevant information (step 533).Another one difference is step 563.In step 563, info response message is sent to eNB502 by UE503, and wherein info response message comprises RLF report.But, info response message does not comprise any UE identifying information, but comprises an instruction, and wherein this instruction is pointed out to exist previous RRC to connect and re-established trial.For instance, info response message can comprise Boolean variable (Boolean variable) { RRC connect re-establish trials=very }.In step 564, eNB501 receives RLF report and the Boolean variable that eNB502 sends.Although eNB501 does not also know the accurately UE identifying information relevant to RLF report, based on Boolean variable, eNB501 still may report relevant to the previous turkey of instruction in step 532 by " guesing out " RLF.

Aforesaid way is a kind of plain mode that UE instruction may exist repetition bookkeeping.UE only need remember and indicate its after turkey, carried out RRC connect re-establish trial, thereby have unsuccessfully event information need report.In addition, only, when guaranteeing that RAN has received RRC and connected and re-establish when request (as step 531), UE just can make above-mentioned instruction.Above-mentionedly guarantee can be radio link control (Radio Link Control, RLC) confirm (acknowledgement, ACK), MAC/ h-arq (Hybrid Automatic Repeat Request, HARQ) ACK or the RRC response message that receives (re-establishing refuse information as the RRC receiving in step 533 connects).This be because RRC connect the process that re-establishes may be due to other reason failure of the dedicated radio link etc. of damaging, RRC connects and re-establishes request and cannot correctly send RAN at all to.Under said circumstances, do not produce any X2RLF Indication message, and the RLF of follow-up transmission report can not cause repetition bookkeeping yet.Therefore transmission is unsuccessfully taken into account, the statistical value of turkey can be more accurate, the number of times determining to reduce wrong MRO.

Fig. 6 is the schematic diagram of reporting the 4th embodiment of turkey and relevant information in cordless communication network 600.Cordless communication network 600 comprises one eNB-eNB601, two eNB-eNB602, three eNB-eNB603 and UE604.Fig. 6 and Fig. 3 are similar.When beginning, between UE604 and eNB601, exist RRC to be connected (step 611), and after detecting as the turkey (step 621) of RLF, attempt to carry out RRC by eNB602 and connect and re-establish process (step 631).RRC connection re-establishes after process failure, and UE604 separately receives relevant information { X} (step 633).But, in the demonstration example shown in Fig. 6, UE604 does not attempt immediately to carry out RRC by eNB602 and connects the process of setting up.On the contrary, UE604 enters RRC idle condition and stays for some time, or adopts another kind of RAT.UE may retain (as being greater than 48 hours) for a long time by RLF report, but for identifying UE and the contextual relevant information of definite UE is only useful when fresh.Judge whether freshly usefully can or whether adopt another kind of RAT based on UE based on timer (whether the time between report exceedes a certain threshold value as judged from turkey to turkey).In another embodiment, set up process if UE carries out the 2nd RRC connection, relevant information is also die on.

In the demonstration example shown in Fig. 6, UE604 adopts another kind of RAT.Therefore, due to relevant information, { X} is no longer fresh, and UE604 can be abandoned.Step 351～362 in step 651～662 in Fig. 6 and Fig. 3 are similar, and difference is that UE604 adopts another kind of RAT to carry out RRC by different eNB603 and connects the process of setting up.In step 663, info response message is sent to eNB603 by UE604, and wherein info response message includes RLF report, but no longer comprises the relevant information { X} having abandoned.On the contrary, similar with the 3rd embodiment shown in Fig. 5, info response message comprises an instruction, and this instruction is pointed out to exist previous RRC to connect and re-established trial.For instance, info response message can comprise Boolean variable { RRC connect re-establish trials=very }.In step 664, eNB601 receives RLF report and the Boolean variable that eNB603 sends.Although eNB601 does not also know the accurately UE identifying information relevant to RLF report, based on Boolean variable, eNB601 still may report relevant to the previous turkey of instruction in step 632 by " guesing out " RLF.

It is dual that the benefit of fresh relevant information is only provided.First, due to UE can be in the time not needing while dying on (RAN lost UE context and relevant information) relevant information is provided, therefore can reduce load.Moreover, can avoid mistake relevant (miss-correlation), as new UE may be assigned with previously C-RNTI used of another UE, the context of so new UE should be not relevant to a certain turkey report.Therefore, can be only connect RRC after re-establishing process at failed RRC immediately and provide relevant information in connecting the process of setting up (process is set up in the RRC connection that recovers due to NAS to trigger).Said method is very easy to realize (if do not needed timer), and UE does not need to remember any information about other RAT.

Fig. 7 is that subscriber equipment detects and report the flow chart of failure event method according to an embodiment of the invention.In step 701, UE detects turkey in the first community by the first base station service.Wherein, turkey can comprise RLF, HOF or RACH failure.In step 702, UE carries out RRC connection by the second community and sets up process, and wherein the second community can provide service by the second base station.In step 703, UE sends to the second base station by the relevant information of turkey report and turkey after process is set up in RRC connection, wherein relevant information represents previously to connect or connect and attempts relevantly to turkey, can make the identification of base stations UE relevant with turkey.

Fig. 8 is that the flow chart of failure event method is processed in base station by relevant information according to an embodiment of the invention.In step 801, base station receives RRC from UE and connects the request that re-establishes, and wherein RRC connection re-establishes the turkey of asking instruction to dispose the UE of a C-RNTI and provides service by initial base station.In step 802, base station re-establishes response by RRC connection and sends to UE.In step 803, base station is carried out RRC connection by UE and is set up process, and the 2nd C-RNTI is distributed to UE.In step 804, base station from UE, take defeat event report and relevant information.Wherein, relevant information represent previous RRC connect re-establish attempt relevant with turkey.

As mentioned above, when UE the relevant information in RLF report is fresh, relevant information is sent to network.Between RAT, in scene, attempt UE context and RLF to report that the possibility of being correlated with is basic and meaningless.Between supplier, the signaling of (inter-vendor) transmits needs through test, and network is not likely supported between all RAT mutual.Therefore, for existing multiple suppliers to provide between the RAT of RAN scene even across (inter-frequency) scene frequently, more general way is to put into RLF report by reaching the required all information of conclusion without demur (non-ambiguous conclusion), instead of it is relevant only to depend on network.Thus, provide the concept of relevant information to be expanded easily, and be applied between RAT or across in frequency scene.That is to say, UE offers network by the full detail (full information) about C-RNTI and cell identification information together with RLF report, instead of only provides relevant information.To other details of the RLF report between RAT be described below.

RLF report is used for optimizing handoff parameter, and detects covering problem.In general, the RLF in Long Term Evolution (Long Term Evolution, LTE) system report allow UE by the information reporting about connection failure event (as RLF or HOF) to network.The information of reporting comprises available geographical location information (geographical location information) and available traverse measurement result.But, current LTERLF report can only be applied in interior (intra-RAT) scene of RAT.In a lot of networks of today, due to the oam (Operation having between the different system of different RAT technology, Administration and Maintenance, OAM) limited alternately, mobile poor performance and be not easy to detect between RAT.

One of object of the present invention is to add enough information in RLF report, thereby can be applicable to scene between RAT, and overcomes the shortcoming of prior art.Based on RLF report, network can carry out correct operation and adjustment, to reduce failure.By provide more reliable information (compared with the available information of network plan) in RLF report, can improve performance mobile between RAT.

In one embodiment, in RLF report, include UE configuration information, wherein, UE configuration information is used for adjusting and limiting the opportunity of measuring between RAT.When turkey occurs, UE configuration information can play a role, and as can be therefrom inferred desired UE travelling performance, and can understand and how turkey be classified, with the order of severity of problem identificatioin.Clearer and more definite, in one embodiment, in RLF report, can comprise measurement clearance (gap) configures, indicates the instruction of RAT kind that UE measures or RAT number and indicate the instruction of the number of the carrier frequency that UE in which carrier frequency measures or measure.

Between RAT, the mobile failed important situation of one is that networking command UE changes RAT, and UE cannot be connected to target RAT.May be owing to redirecting, cell reselection (cell change), have or not and network-assistedly (network-assistedly add information as network although networking command UE changes RAT, to help UE to be connected to sooner Target cell) between the networking command of other type such as transformation, but above-mentioned condition is referred to as between RAT HOF between failure or RAT.Because system intercommunication (interoperability) is very complicated, conventionally only adopt simple mechanisms to support the movement between RAT.For instance, current LTE RLF report does not support to report the information about HOF between RAT.

In one embodiment, UE is connected to a radio access point (as serving BS), network requirement UE connects from a kind of RAT and moves to another kind of RAT, or moves to another access point (this another access point adopts different dual-modes from Serving cell).After connection is moved unsuccessfully, UE will store about above-mentioned failed recorded information (logged information), and network can retrieve recorded information after a while.In the present embodiment, detecting above-mentioned failed conventional triggering is that timer expires (timer timeout), and wherein timer receives network requirement at UE and in the time that a kind of RAT moves to the order of another kind of RAT, starts timing by connecting.In addition, UE may need multiple Public Land Mobile Networks (Public Land Mobile Network, PLMN) ID to carry out Network Check, to determine whether to be allowed to reporting recorded turkey.

Fig. 9 is the schematic diagram that due to switching command too early, HOF between RAT is reported to according to an embodiment of the invention to network in cordless communication network 900.Cordless communication network 900 comprises UE901, one RAT-RAT1 902 (as source network) and two RAT-RAT2 903 (as objective network).In step 911, UE901 is connected to source network RAT1 902.In step 912, UE901 record move measurement result, and by traverse measurement report the test to RAT1 902.In step 913, UE901 receives switching command from source network RAT1 902, and wherein switching command requires UE901 to be connected to objective network RAT2 903.But above-mentioned switching command sends ground too early.In step 914, UE901 attempts to be connected to objective network RAT2 903.Because switching command sends too early, switch and attempt unsuccessfully.UE901 records the above-mentioned failed information of closing subsequently.In step 915, UE901 connects back source network RAT1 902.UE901 subsequently by record RAT between HOF information reporting to source network RAT1 902.

As shown in Figure 9, if UE cannot be connected to Target cell or target RAT, expection is operating as UE and attempts to connect the source network (as UE901 connects back source network RAT1 902) of getting back to its reception switching command.In the present embodiment, consider in cell-of-origin, may have determine when carry out or the no RAT of carrying out between the configuration parameter that switches, be therefore used for improving more the correct operation of travelling performance between RAT in cell-of-origin.In addition, in the present embodiment, the network with different RAT has different OAM systems, therefore possibly cannot connect well.Have between the RAN of different RAT and core net and reduce and can effectively reduce alternately intercommunication problem as much as possible, therefore, handover information between RAT can be reported to source network, source RAT or cell-of-origin.

For mobile between RAT, the traverse measurement that step 912 is carried out has special significance to detecting " blind (blind) " switching.So-called blind switching refers to without UE provides measurement report as the triggering of switching, and network direct command UE moves.Wherein, measurement report includes the measurement result of UE to Target cell.The correct operation carrying out after blind handoff failure can be and UE is set before switching, measures.Blind switching is widely used in making and switching between the RAT determining in scene based on demand for services.But, although being set sometimes, measures UE, as triggered and switch based on affair, UE still may switch based on service trigger, is blindly switched to another kind of RAT.Under above-mentioned condition, switch and be still considered to blind switching, but cannot be by having checked that the measurement report in RLF report infers blind switching.Therefore, UE should report whether whether switching is blind switching,, before movement directive, have the measurement report to Target cell that reports to network.In a demonstration example, about the recorded information of HOF between RAT comprises whether point out to switch is the clearly instruction (explicit indication) of blind switching.

Figure 10 be according to an embodiment of the invention in cordless communication network 1000 due to cross slow switching command by and between RAT HOF report to the schematic diagram of network.Cordless communication network 1000 comprises UE1001, one RAT-RAT1 1002 (as source network) and two RAT-RAT2 1003 (as objective network).In step 1011, UE1001 is connected to source network RAT1 1002.In step 1012, UE1001 record move measurement result, and by traverse measurement report the test to RAT1 1002.In step 1013, UE1001 receives switching command from source network RAT1 1002, and wherein switching command requires UE1001 to be connected to objective network RAT2 1003.But it is slow that above-mentioned switching command sent.Before receiving switching command, UE1001 runs into radio link failure at RAT1 1002.UE1001 carries out record by the information about failed subsequently.In step 1014, UE1001 attempts to be connected to objective network RAT2 1003, and is successfully connected to objective network RAT2 1003.In step 1015, UE1001 connects back source network RAT1 1002, and by HOF information reporting between RAT to source network RAT1 1002.

Mobile generally because service causes between RAT, and the movement of some type (as being connected to Target cell after late) is than more easily failure of the movement of other type.Therefore,, for dealing with problems, correct operation should be determined mobile better execution type.In the present embodiment, record and report that between the RAT of (step 1015), HOF information comprises mobile type and reason, as switched, redirect, network-assisted cell reselection (Network Assisted Cell Change, NACC), circuit domain dropping (Circuit-switched Fallback, CSFB), enhancement mode CSFB (enhanced CSFB) and injection frequency voice call continuous (Single Radio Voice Call Continuity, SRVCC) etc.

In addition, correct operation can be undertaken by Target cell sometimes.In order to determine whether to carry out correct operation by Target cell, as whether needed Target cell to provide more RACH resources to block (access load blocking) to record high access load, just need to know the more information about failure cause.In one embodiment, record and report that between the RAT of (step 1015), HOF information can comprise the type of failure, as do not find Target cell, Target cell improper or be not allowed to and UE access Target cell unsuccessfully etc.

Except between RAT HOF, another kind of common connection failure scene is that UE runs into connection failure (as RLF) while being connected to Yi Ge community, and UE is connected to another kind of RAT after failure subsequently.Above-mentioned situation is called as RLF between RAT.For above-mentioned failure, current LTE RLF report can provide information sometimes, as comprises available traverse measurement result.If the available traverse measurement result instruction in RLF report does not have with neighbor cell frequently, but has neighbor cell between suitable RAT, be switched to neighbor cell between above-mentioned RAT and may prevent failure.

But, problem be UE may be in RLF report report to RAT between the measurement of neighbor cell, one of reason of the problems referred to above is the configuration (as do not provided configuration for considering of economize on electricity) that UE does not carry out traverse measurement between RAT, what another kind of reason was Serving cell stops that measuring threshold value setting too low, makes UE stop at cell-of-origin and carries out measuring between RAT.In one embodiment, the UE that is connected to radio access point (as serving BS) detects after RLF, is connected to subsequently another kind of RAT, or is connected to another access point, and wherein this another access point has different dual-modes from previous Serving cell.The recorded information that UE storage is relevant with another access point of another kind of RAT/ with RLF.Network can retrieve above-mentioned recorded information subsequently.

Figure 11 is the schematic diagram that RLF between RAT is reported in cordless communication network 1100 according to an embodiment of the invention to source network.Cordless communication network 1100 comprises UE1101, one RAT-RAT1 1102 (as source network) and two RAT-RAT2 1103 (as objective network).In step 1111, UE1101 is connected to source network RAT1 1102.In step 1112, UE1101 detects the radio link failure of source network.UE1101 will get off about above-mentioned failed information recording.In step 1113, UE1101 select target community, and connect by RRC the process of foundation and be connected to objective network RAT2 1103.The information that UE1101 record is relevant with RAT2 1103 and the relevant information in selected Target cell being connected with UE1101.For instance, recorded information can comprise the community ID of selected Target cell.Wherein, community ID comprises physical-layer cell identifier (the Physical Cell Identity of RAT2 1103, PCI), wherein PCI comprises master sync signal (Primary Synchronization Signal, PSS), auxiliary synchronous signal (Secondary Synchronization Signal, SSS) and frequency.In step 1114, UE1101 leaves RAT2 1103 (as due to radio covering problem, or owing to no longer needing service).In step 1115, UE1101 connects back RAT1 1102, and enters connection status (as due to radio covering problem, or due to needs service).In step 1116, RLF between RAT is reported to source network RAT1 1102 by UE1101.Wherein, between RAT, RLF report comprises the recorded information of radio link turkey, and UE1101 is connected to the recorded information of objective network RAT2 1103 and/or selected Target cell after failure.When above-mentioned Information Availability is identified the potential neighbor cell with different RAT, and initial service eNB may and not know above-mentioned potential neighbor cell.

As shown in figure 11, in order to support the network that there are different RAT, cannot finely connect, in OAM territory and PLMN, the correct operation carrying out in the community that to occur or trigger in order to support unsuccessfully, UE1101 can be by RLF information reporting between the RAT of record to source network/RAT/ community.Wherein, source network/RAT/ community is the network/RAT/ community that unsuccessfully occurs or trigger.Clearer and more definite, UE1101 records ID, carrier frequency and the RAT that UE connects the selected community of the process of foundation, or records the global cell identifier (Global Cell Identity, GCI) that deducibility goes out carrier frequency and RAT.Understand after RAT, carrier frequency and the ID of Target cell, network can ensure to measure between RAT configuration, moves carrying out between RAT.Understand the ID connecting or reconnect community and can make network switch by triggerings, more early to identifying community transmission RLF.

In one embodiment, UE can record from RLF generation or be triggered to successfully the time connecting between (as UE has selected the Target cell that will connect).In another embodiment, UE can record from RLF and occur or be triggered to attempt connecting the time between the process of foundation.UE cannot be before unsuccessfully occurring or triggering measure (as UE not carried out to measure setup between RAT) time, if from unsuccessfully shorter to the time connecting, thinks that the community that connects or reconnect is for handover candidate cells preferably.

Figure 12 is the schematic diagram that RLF between RAT is reported in cordless communication network 1200 according to an embodiment of the invention to objective network.Cordless communication network 1200 comprises UE1201, one RAT-RAT1 1202 (as source network) and two RAT-RAT2 1203 (as objective network).In step 1211, UE1201 is connected to source network RAT1 1202.In step 1212, UE1201 detects the radio link failure of source network.The information that UE1201 record is relevant with above-mentioned failure.In step 1213, UE1201 select target community, and connect by RRC the process of foundation and be connected to objective network RAT2 1203.In step 1214, RLF between RAT is reported to objective network RAT2 1203 by UE1201.Between RAT, RLF report comprises the recorded information about RLF event.In order to support the more complex network of the different RAT with better connection that may occur future, recorded information is reported to objective network/RAT/ community by UE1201, and to be wherein UE unsuccessfully occurring or triggering latter linked network/RAT/ community in objective network/RAT/ community.

In one embodiment, no matter RLF report between RAT is sent to source RAT or target RAT by UE, mainly carries out correct operation by the community unsuccessfully occurring or trigger.UE record triggers ID, carrier frequency and the RAT of the community of radio link failure, or records deducibility and go out the global cell identifier of carrier frequency and RAT.Recorded information is included in RLF report, and sends to source/target RAT subsequently.Above-mentioned information can be identified more easily correct operation and should in which community, carry out.

No matter RLF report between RAT is sent to source RAT or target RAT by UE, for the definite UE that supports failure to adopt to the cell-of-origin unsuccessfully occurring or trigger configures relevant, and the more complicated correct operation of support, in one embodiment, UE also should record following information: the C-RNTI value (as at least unique in cell-of-origin or source RAN) that in cell-of-origin, UE adopts, and deducibility goes out the temporal information that when provided C-RNTI value is provided UE (as from unsuccessfully occurring or being triggered to the time between reporting unsuccessfully).

In the demonstration example shown in Figure 11 and Figure 12, source network occurs or triggers radio link failure, and radio link unsuccessfully may switch and cause owing to crossing late.Similarly, can there is or trigger radio link failure in objective network, and radio link unsuccessfully may be owing to switching and causing too early.

Figure 13 is the schematic diagram that HOF/RLF between RAT is reported in cordless communication network 1300 according to an embodiment of the invention to the network that triggers turkey.Cordless communication network 1300 comprises UE1301, one RAT-RAT1 1302 (as source network) and two RAT-RAT2 1303 (as objective network).In step 1311, UE1301 is connected to the cell-of-origin in source network RAT1 1302.In step 1312, UE1301 receives switching command from source network RAT1 1302, and wherein switching command requires UE1301 to be connected to objective network RAT2 1303.But above-mentioned switching command sends ground too early.In step 1313, UE1301 attempts to be connected to objective network RAT2 1303.Because switching command sends too early, above-mentioned switching is attempted unsuccessfully.Or UE1301 can successfully be connected to RAT2 1302 in the time starting, but just run into soon radio link failure.UE1301 records the information about HOF/RLF subsequently.In step 1314, UE1301 selects Target cell in RAT1 1302, and is connected to RAT1 1302.Because HOF triggers in RAT1 1302, UE1301 can be by HOF information reporting between RAT to RAT1 1302.

In the demonstration example shown in Figure 13, in step 1315, UE1301 has connected back after the RAT2 1303 that triggers RLF, and RLF between RAT is reported to RAT2 1303 by UE1301.Between RAT, RLF report can comprise selected community ID and previous community ID.Selected community ID comprises the PCI of Target cell in RAT1 1302, and wherein Target cell is that UE1301 attempts the community (as step 1314) connecting after RAT2 1303 occurs or triggers RLF.After failure, be connected to the scene of another community in order to distinguish above-mentioned scene and UE1301, need selected community id information.Previously community ID comprised the PCI of cell-of-origin in RAT1 1302, and wherein cell-of-origin is for providing the community (as step 1311) of service for UE1301 before switching.Need previous community id information, so that notice is sent to RAT1 1302 from RAT2 1303.

Figure 14 is the flow chart that sends according to an embodiment of the invention RLF between RAT in cordless communication network.In step 1401, UE detects turkey in the first community of the first base station service, and wherein the first community adopts a RAT.In step 1402, UE carries out RRC with the second community of selecting and is connected the process of foundation, and the second community of wherein selecting is served by the second base station, and adopts the 2nd RAT.In step 1403, turkey report is sent to cordless communication network by UE.Turkey report comprises the recorded information about turkey.In one embodiment, turkey report comprises carries out ID, carrier frequency and the RAT that RRC connects the community of the process of setting up, and above-mentioned information will report to a RAT.In another embodiment, turkey report comprises that turkey occurs or ID, carrier frequency and the RAT of the community of triggering, and above-mentioned information will report to the 2nd RAT.

Figure 15 is the flow chart that sends according to an embodiment of the invention HOF between RAT in cordless communication network.In step 1501, UE sets up dedicated radio link in the first community that adopts a RAT.In step 1502, UE receives movement directive, wherein above-mentioned movement directive require UE by dedicated radio link from adopting the first community of a RAT to move to the Target cell that adopts the 2nd RAT.Movement directive is switching command, redirect, NACC, CFSB and improve CFSB or SRVCC etc.In step 1503, UE detects the turkey relevant with movement directive, and records the information about turkey.In step 1504, UE by record RAT between turkey information reporting to network (as turkey occur or trigger network).In one embodiment, movement directive is switching command, and recorded information comprises whether switching command is blind switching command.In another embodiment, recorded information comprises Fail Type, as Target cell is not found, Target cell is improper/be not allowed to or access Target cell unsuccessfully etc.

As mentioned above, in LTE system, adopt RLF report, allow UE by the information reporting about connection failure event to network.Wherein, connection failure event is as RLF, HOF or connect and set up unsuccessfully (as RACH unsuccessfully).In general, RLF report is used for optimizing handoff parameter, and detects covering problem.But LTE turkey reports that Supporting connectivity is not set up failed turkey report at present.Set up failed relevant information if do not connect, just cannot learn that seriously whether coverage hole (coverage hole).Therefore,, concerning network, understand initial connection and set up unsuccessfully very important.But Initial R RC connection is set up unsuccessfully and can only be learnt by UE, and network cannot detect conventionally.Even can detect in the network of failure, network still lacks identification and connects information and other relevant information of setting up failed position.

One of object of the present invention is in the time that connection is set up unsuccessfully, insufficient information to be offered to network by UE, overcomes the shortcoming of current techniques.In one embodiment, sets up while unsuccessfully occurring connecting, UE provides the detailed information of failure, relevant positional information and traverse measurement in turkey is reported.Based on above-mentioned turkey report, network can carry out correct operation and adjustment, to reduce failure.

Figure 16 is the schematic diagram that connects an embodiment who sets up failure reporting in cordless communication network 1600.Cordless communication network 1600 comprises UE1601 and RAN1602.In step 1611, UE1601 in RRC idle condition (camp) waiting to the first community.UE1601 thinks that community waiting is suitable cell.In step 1612, UE1601 attempts to be connected to the network in the first community.The local applications trigger that above-mentioned trial can be moved by UE, also can be triggered by the paging of network.Connect to set up and attempt generally comprising RACH process.But after repeatedly attempting, RACH process is also unsuccessful.In step 1613, UE1601 records the information about turkey.In step 1614, UE1601 successfully enters RRC connection status after a while.For instance, the triggering based on another local application after a while, UE1601 initial connect set up and be connected with RRC and be successfully established after, be connected to the network in the second community.In step 1615, turkey report is sent to network by UE1601.Turkey report comprises the detailed information of previous turkey, about the initial recorded information of setting up unsuccessfully (as RACH failure) that connects.Should be noted, set up unsuccessfully for initial connection, because UE now is not connected to network, turkey report can not comprise previous community ID or previous C-RNTI.But, UE still can record the community ID that community unsuccessfully occurs, and record had previously connected the C-RNTI of community (being RACH failure community before).

In turkey report, UE can report the time that turkey occurs, and reports available position and/or available traverse measurement.In possible RF or overall community covering correct operation, need positional information, need traverse measurement and carry out shift calibrating operation (as selected again community).In addition, traverse measurement can be used to, in the time that UE does not have the precise position information of turkey generation, infer positional information roughly.If attempt to carry out RACH process during connecting foundation, UE can report subsequently the detailed information about RACH failure.

Figure 17 is the schematic diagram of an embodiment of RACH process and RACH process failure reporting.In step 1711, RACH is sent to network 1702 above by UE1701, to start RACH process.In a scene, if multiple UE sends RACH above simultaneously in same RACH resource, may cause RACH collision (collision).Thus, cannot carry out decoding above to RACH, UE1701 also cannot receive RACH response from network 1702.In another scene, even if successfully RACH has been carried out to decoding above, but owing to there is no enough bandwidth resources, network possibly cannot be permitted uplink resource.Thus, UE1701 still cannot receive RACH response from network 1702.In above-mentioned two kinds of scenes, UE1701 attempts RACH process again in step 1712,, after overtime and avoidance mechanism (timeout and a backoff mechanism), resends RACH above.If RACH is above by decoding success, and have enough bandwidth,, in step 1713, UE1701 receives RACH response and uplink resource allocation.In step 1714, UE1701 sends Initial R RC message (as message 3), to ask RRC to connect.If bump,, in step 1715, UE1701 sends to network by message again.If ask successfully,, in step 1716, UE1701 receives conflict from network 1702 and solves message (as message 4).Finally, in step 1717, UE1701 sends RRC data, is connected to set up RRC with network.

Due to many reasons, repeatedly retransfer RACH above and/or RACH request after, RACH process may failure.If initial connection is set up process and proved an abortion,, in step 1718, UE1701 is recorded to the detailed information of turkey in turkey report.Turkey report comprises whether following information: UE detects that RACH conflict (contention) solves unsuccessfully, whether UE is assigned with special RACH resource, whether UE receives and keeps out of the way information in RACH response, whether UE receives any response, and whether UE reaches maximum power between RACH trial period.

It is relevant with certain failure that recorded information contributes to Network Recognition to go wrong, and the corresponding correct operation of taking.For instance, if distribute special RACH resource to UE, unlikely there is RACH conflict.If give other UE also distribute identical RACH resource (as identical RACH above or RACH resource), may there is RACH conflict.On the other hand, keep out of the way instruction and mean high capacity.Judge that failed possibility is because overload (overload) is extremely important, because the correct operation of taking for overload is very different from the correct operation of taking for limited coverage area.In addition, contribute to determine that about whether UE detects the information of any RACH response RACH unsuccessfully occurs in the first conflict resolution stage (contention resolution phase) or the second request negotiation phase (request negotiation phase).This type of information also can indication network in the problem of other kinds, the base station fault all cannot receive any RACH response as all UE time.Based on above-mentioned information, the relevant operation of the correct operation of taking for base station fault and other load, RRM (Radio Resource Management, RRM) or RF is different.

In addition, UE can record and report that session establishment/call attempt is Mobile Originated (Mobile Originated, MO) or travelling carriage receive (Mobile Terminated, MT), i.e. in RLF report, can indicate RRC to connect that the process of setting up is triggered by Mobile Originated call setup or the call setup being received by travelling carriage triggers.Whether understanding foundation/call attempt is that MO or MT are necessary, be the problem of up link relevant (uplink-related) because network can be inferred problem thus.Obviously, in MT calls out, UE can be paged, but the up link that paging is responded trial cannot be successful.

Figure 18 connects the flow chart of setting up failure reporting method according to an embodiment of the invention.In step 1801, the community that UE serves in RRC idle condition base station to be received.UE thinks that community waiting is suitable cell.In step 1802, when UE carries out RACH process with base station in trial is set up in RRC connection, detect to connect and set up unsuccessfully.When the failure of RACH process, UE records turkey report.In step 1803, UE sends to cordless communication network in RRC connection status by turkey report.Turkey report comprises the information of attempting about previously RRC connection foundation.For instance, whether information instruction UE detects that RACH conflict solves unsuccessfully, or whether UE reaches maximum power in RACH process.Turkey report also can comprise that initial connection sets up available position information or the available traverse measurement while unsuccessfully generation.

One embodiment of the invention can provide a kind of subscriber equipment, comprising: radio resource control connection administration module, is used for making UE in RRC idle condition cordless communication network Zhong to be received community; Turkey administration module, is used for, in the time that UE carries out RACH process with base station in trial is set up in RRC connection, detecting the failure of RACH process, and recording turkey report; And transmitter, be used for setting up after RRC connection at UE, in RRC connection status, turkey report is sent to cordless communication network, wherein turkey report comprises the information that connects foundation trial about described RRC.

Although the present invention discloses as above with regard to preferred embodiment, so it is not intended to limiting the invention.Persons of ordinary skill in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when defining and be as the criterion depending on previous claims.

Claims (6)

1. a failure reporting method is set up in connection, comprising:

In cordless communication network, the community that subscriber equipment is served in radio resource control idle condition base station to be received;

Radio resource control connection set up attempt in while carrying out Random Access Channel process with described base station, detect that radio resource control connection sets up unsuccessfully, wherein said subscriber equipment records turkey report in the time that described Random Access Channel process is failed; And

At radio resource control connection state, described turkey report is sent to described cordless communication network, wherein said turkey report comprises the information of setting up trial about described radio resource control connection.

2. failure reporting method is set up in connection as claimed in claim 1, it is characterized in that, described turkey report comprises available position information when described Random Access Channel unsuccessfully occurs, or comprises available traverse measurement when described Random Access Channel unsuccessfully occurs.

3. failure reporting method is set up in connection as claimed in claim 1, it is characterized in that, whether the described subscriber equipment of described turkey report instruction detects that Random Access Channel conflict solves unsuccessfully, or indicate described subscriber equipment whether in described Random Access Channel process, to reach maximum power, or indicate whether to the special random access channel resource of described user equipment allocation, or indicate described subscriber equipment random access channel responses whether to be detected, or indicate described radio resource control connection to set up that process is triggered by Mobile Originated call setup or the call setup being received by travelling carriage triggers.

4. a subscriber equipment, comprising:

Radio resource control connection administration module, is used for making described subscriber equipment in radio resource control idle condition cordless communication network Zhong to be received community;

Turkey administration module, is used for, in the time that described subscriber equipment carries out Random Access Channel process with base station in the foundation of radio resource control connection is attempted, detecting the failure of Random Access Channel process, and records turkey report; And

Transmitter, be used for setting up after radio resource control connection at described subscriber equipment, at radio resource control connection state, described turkey report is sent to described cordless communication network, wherein said turkey report comprises the information of setting up trial about described radio resource control connection.

5. subscriber equipment as claimed in claim 4, is characterized in that, described turkey report comprises available position information when described Random Access Channel unsuccessfully occurs, or comprises available traverse measurement when described Random Access Channel unsuccessfully occurs.

6. subscriber equipment as claimed in claim 4, it is characterized in that, whether the described subscriber equipment of described turkey report instruction detects that Random Access Channel conflict solves unsuccessfully, or indicate described subscriber equipment whether in described Random Access Channel process, to reach maximum power, or indicate whether to the special random access channel resource of described user equipment allocation, or indicate described subscriber equipment random access channel responses whether to be detected, or indicate described radio resource control connection to set up that process is triggered by Mobile Originated call setup or the call setup being received by travelling carriage triggers.

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