CN103856980B - Failure reporting method and user equipment are established in connection - Google Patents

Abstract

The present invention provides a kind of connect and establishes failure reporting method and user equipment.Wherein, connection establishes failure reporting method and includes：Within a wireless communication network, the cell that user equipment is serviced in radio resource control idle state base station to be connected to；When radio resource control is connected and established in trial with base station progress random access channel process, detects that failure is established in radio resource control connection, reported wherein the user equipment records turkey when the random access channel process fails；And turkey report is sent to the cordless communication network in radio resource control connection status, wherein turkey report includes connecting the information established and attempted in relation to the radio resource control.By using the present invention, network can preferably be corrected operation.

Description

Failure reporting method and user equipment are established in connection

Technical field

The present invention reports (failure event reporting) about turkey, and connects more particularly in initially Connect the turkey report for establishing failure (initial connection setup failure).

Background technology

Self-organizing (self-organization) is that structure or the process of pattern are presented in a kind of system, in the process, Not only there is no centralized (central authority) but also no external factor is by planning to imposing in fact.With the third generation Mobile communication cooperative programme (3^rdGeneration Partnership Project, 3GPP) unanimously, ad hoc network (self- Organization network, SON) vision be compared with radio access network before, it is following wireless to be electrically accessed Network is easier to planning, configuration, management, optimization and repairs.A series of marks in 3GPP the 8th version (Release-8) specification SON is had been written into standard.The base station being newly added should be (self-configured) of self-configuring, with " plug and play (plug- And-play) " normal form is consistent, and the network performance and radio condition that the base station in all working is arrived according to the observation, to ginseng Number and algorithm carry out regular self-optimizing (self-optimization).In addition, while waiting for permanent solution, can touch From reparation (self-healing) mechanism, the device powers down detected for temporary compensation (outage).

In 3GPP networks, including mobile Robust Optimization (Mobility Robustness Optimization, MRO) Mobile optimization be reactivity (reactive) the self-optimizing work(executed in the evolution node B (evolved-Node B, eNB) Can, for optimizing switching (handover, HO) parameter.For example, eNB needs to optimize UE measuring configurations and HO algorithms, to look for To acceptable or alap HO problem rates, and find balance table tennis rate or HO rates.In a too late HO problems, switching Before beginning or in handover process, connection failure occurs at cell-of-origin (source cell), UE attempts in Target cell (if cutting Change and started) or the cell (if switching not yet start) of another non-cell-of-origin in re-establish radio link connection.In a mistake In early HO problems, connection failure just occurs from cell-of-origin successful switch to Target cell or in handover process, UE attempts small in source Area re-establishes radio link connection.In a wrong cell HO problems, just from cell-of-origin successful switch to Target cell or Connection failure occurs in handover process, UE attempts to re-establish radio link in a cell of non-cell-of-origin and non-targeted cell Road connects.

After occurring such as the failure of RLF or handover failure (handover failure, HOF) etc., have if UE can be found Another suitable cell of identical RAT, then UE can attempt carry out radio resource control (Radio Resource Control, RRC) connection re-establishes process.According to existing 9th version (Rel-9), after re-establishing trial and success, network can pass through X2RLF indicates process to inform the serving cell of the previous UE of eNB, which is based on instruction and is calculated to realize mobile optimization.? In tenth version (Rel-10), UE can also carry out RLF report after the rrc connection is established, i.e. RRC connections re-establish failure (can Can be due to unripe) Non-Access Stratum (non-access stratum, NAS) restores (recovery) success afterwards and subsequently When.

However, follow-up RLF report can not be associated with by network with the UE contexts (context) in previous serving cell Come.Therefore, if 3GPP is operated in the manner described above, repetition bookkeeping (double bookkeeping) problem is undoubtedly had.First, Since RRC connections re-establish trial, statistical value can be updated；If RRC connections re-establish process failure, UE carries out RRC After process is established in connection, according to the RLF report of UE, statistical value can be updated again.9th version and recommend the tenth edition Method in this is not fully compatible with.Above-mentioned repetition bookkeeping problem can cause unsuccessfully statistical value insincere, thereby increases and it is possible to can cause The MRO of mistake is operated.

When failure occurs, the content of RLF report and the UE information known to network are for for unsuccessfully determining corresponding correction Operation plays a crucial role.For certain failures, most suitable correct operation operates for non-MRO, such as interference coordination Be reconfigured or change power control etc..Due to network it is known that UE contexts in previous serving cell, as UE cell without Line electric network temporary identifier (Cell Radio Network Temporary Identity, C-RNTI), should find one kind can Network Given information and RLF report are subjected to relevant scheme, to avoid bookkeeping is repeated, and the MRO for improving SON is determined.

Another, which is potentially prone to RLF report, very late can be just transmitted in base station (after unsuccessfully occurring one day). The UE contexts of non-serving UE (non-served) and C-RNTI will not be preserved the long time by general base station, and general base station is used It is limited come the storage space that stores the above.

Invention content

In view of this, the present invention proposes that failure reporting method and user equipment are established in a kind of connection.

The present invention proposes that failure reporting method is established in a kind of connection, including：Within a wireless communication network, user equipment is in nothing The cell that line electric resources control idle state base station to be connected to is serviced；Radio resource control connect establish attempt in institute When stating base station progress random access channel process, detect that failure is established in radio resource control connection, wherein the user sets It is standby that turkey report is recorded when the random access channel process fails；And it is incited somebody to action in radio resource control connection status The turkey report is sent to the cordless communication network, wherein turkey report includes the related radio The information attempted is established in resources control connection.

The present invention separately proposes a kind of user equipment, including：Radio resource control connection management module, for making the use Cell of the family equipment in radio resource control idle state cordless communication network to be connected to；Turkey management module is used Come in the user equipment when radio resource control is connected and established in trial with base station progress random access channel process, inspection The failure of random access channel process is surveyed, and records turkey report；And transmitter, for establishing nothing in the user equipment After the control connection of line electric resources, turkey report is sent to the channel radio in radio resource control connection status Communication network, wherein turkey report includes connecting the information established and attempted in relation to the radio resource control.

By using the present invention, network can preferably be corrected operation.

Other embodiments and advantage described below.This part content is not construed as limiting the present invention, and the scope of the invention is by weighing Profit requires to be limited.

Description of the drawings

By reading specific implementation mode below and refer to the attached drawing, the present invention can be fully understood, wherein：

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

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

Fig. 3 is the schematic diagram for the first embodiment for reporting turkey and relevant information.

Fig. 4 is the schematic diagram for the second embodiment for reporting turkey and relevant information.

Fig. 5 is the schematic diagram for the 3rd embodiment for reporting turkey and relevant information.

Fig. 6 is the schematic diagram for the fourth embodiment for reporting turkey and relevant information.

Fig. 7 is the flow chart that user equipment according to an embodiment of the invention detected and reported failure event method.

Fig. 8 is flow chart of the base station according to an embodiment of the invention by relevant information processing failure event methods.

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

Figure 10 be in cordless communication network 1000 according to an embodiment of the invention due to too late switching command will and between RAT HOF is reported to the schematic diagram of network.

Figure 11 is by RLF report between RAT in cordless communication network 1100 according to an embodiment of the invention to source network Schematic diagram.

Figure 12 is by RLF report between RAT in cordless communication network 1200 according to an embodiment of the invention to target network Schematic diagram.

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

Figure 14 is the flow chart of RLF between the RAT of transmission within a wireless communication network according to an embodiment of the invention.

Figure 15 is the flow chart of HOF between the RAT of transmission within a wireless communication network according to an embodiment of the invention.

Figure 16 is the schematic diagram for the embodiment that failure reporting is established in connection in cordless communication network.

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

Figure 18 is the flow chart according to an embodiment of the invention for connecting and establishing failure reporting method.

Specific implementation mode

Some vocabulary has been used in patent specification and claim to censure specific component.In fields Has usually intellectual, it is to be appreciated that hardware manufacturer may call the same component with different nouns.This patent is said Bright book and claim are come not in such a way that the difference of title is used as and distinguishes component with the difference of component functionally Criterion as differentiation."comprising" or " comprising " mentioned in working as in specification in the whole text and claims are open term, Therefore it should be construed to " including but not limited to ".In addition, " coupling " word includes any direct herein and is indirectly electrically connected hand Section.Therefore, if it is described herein that a first device is coupled to a second device, then representing the first device can directly be electrically connected in The second device, or be electrically connected indirectly to the second device through other devices or connection means.

It is depicted below as the preferred embodiment that the present invention is implemented, and some embodiments are illustrated by attached drawing.

Fig. 1 is the cordless communication network 100 according to an embodiment of the invention with turkey report and correlation Schematic diagram.Cordless communication network 100 includes multiple base stations (eNB101, eNB102 and eNB103) and user equipment (UE) 104. By providing service positioned at the eNB101 of cell 111 when UE104 is initial, and it is in RRC connections (RRC_CONNECTED) state.Slightly Afterwards, UE104 detects RLF, and the radio signaling metrical information before recording RLF is for subsequent report (step 121). After detecting turkey, UE104 rests on connection status and carries out cell selection.After finding suitable cell, UE104 attempts It carries out RRC connections and re-establishes process.For example, UE104 selects cell 112, and carries out RRC connections again by eNB102 Establish process (step 122).RRC connections, which re-establish process, to be a kind of quick and is generally electrically accessed network by local wireless (Radio Access Network, RAN) carries out the process of (mostly-RAN-local), and is only ready in cell 112 After carry out, such as only carried out when eNB102 has had UE contextual informations.For example, if UE104 attempts and its previous institute The same base eNB101 of connection re-establishes connection, if eNB101 UE contextual informations are passed into eNB102 in advance And eNB102 is already prepared to, then RRC connections re-establish process and will succeed.But in certain other embodiments, target Cell may less know the contextual information of UE.The RRC connections of UE re-establish request and may include UE identification informations (identification information), such as the cell identifier of the previous cell that connects of C-RNTI and UE of UE (identity,ID)。

In RRC connections re-establish process, RLF instructions and UE identification informations are sent to elder generation by eNB102 by X2 interface The eNB101 of preceding service.If RRC connections re-establish process failure, UE104 changes into its state from RRC connection status RRC free time (RRC_IDLE) states, and carry out cell selection procedure.After finding suitable cell, UE104 attempts to carry out RRC companies Connect the process of foundation.Usually, UE, which can select to attempt RRC with it to connect, re-establishes identical cell.In one embodiment, if RRC connections re-establish process failure, and relevant information { X } is sent to UE104 by eNB102, and wherein relevant information { X } is that can know Do not go out any information that RRC connections re-establish the UE of process failure.

In an embodiment shown in Fig. 1, UE104 selection cells 112 simultaneously establish process by eNB102 progress RRC connections (step 123).Compared with RRC connections re-establish process, RRC connections establish process and are related to core network to a greater degree, and Spend the slightly longer time.But RAN does not have first standby knowledge (prior knowledge) to UE, i.e., due to not providing RAN relevant informations, RAN is given to be not aware that whether UE had previously been connected.In fact, RAN None- identified UE, therefore UE can quilt Distribute new C-RNTI.This is applied equally to RRC connections and re-establishes process unsuccessfully NAS recovery triggering RRC connections foundation The situation of process.

It is established in process in RRC connections, UE104 informs that eNB102 has an available RLF report.Receive the letter of eNB102 After breath request, RLF report and relevant information { X } are sent to eNB102 by UE104.In one embodiment, it is based on relevant information { X }, eNB102 can determine previous UE identification informations.In step 124, eNB102 is reported the RLF received by X2 interface It accuses and previous UE identification informations sends jointly to the eNB101 previously serviced.Above- mentioned information may make eNB101 identification with previously The relevant UE of RLF turkeies, wherein turkey from eNB102 in RRC connections re-establish process by X2 interface to ENB101 is indicated.Information based on offer, eNB101 can report X2RLF and previous X2RLF reports instruction and eNB101 institutes The previous UE contextual informations of storage are related.

In another embodiment of Fig. 1, UE104 uses another kind RAT (steps 125).Attempting to carry out by eNB103 RRC connections are established before process (step 126), and UE104 may rest on another RAT in long time.Although UE104 RLF information can be retained for follow-up report, but as it is assumed that eNB101 has abandoned stored UE contexts, institute at this moment To think that relevant information { X } is no longer fresh (fresh) and no longer useful.Thus, which in this step 127, eNB103 only will RLF report is sent to eNB101, without sending UE identification informations.Alternatively, UE104 may indicate that the previous RRC connections of eNB103 again It establishes process to have failed, and above-mentioned instruction and RLF report are sent jointly to eNB101 by eNB103.Based on above-mentioned instruction, ENB101 still can by X2RLF report it is related to previous X2RLF instructions, or the event that at least averts failure repetition bookkeeping.

RRC connections re-establish process be it is a kind of based on UE can recognize that itself so that the identifiable hypothesis of UE contexts it is excellent Change process.On the other hand, it is such as mobile and redirect (mobility with redirection) RRC connections establish into Cheng Zhong, RAN be not aware that UE whether previously connected or UE be previously connected to where.It is therefore proposed that a kind of based on correlation The advantage of scheme include：A) this programme indicates that other schemes of information are backwards-compatible with based on X2RLF, and will not be out-of-date (future proof)；And the information knot that b) this programme can report information known to network and UE in turkey report Altogether, to ensure quality, and reduce the demand reported UE turkeies because information known to network do not need UE into Row report.Wherein, turkey can be that RLF, HOF or random access channel (Random Access Channel, RACH) are lost It loses.Said circumstances can apply this programme, because said circumstances can be caused by mobility problem, and may carry out first RRC connections re-establish process, and if the first RRC connections re-establish process failure, by the RRC connections of NAS triggering followings Establish process.

Fig. 2 is the simplification block schematic diagram of user equipment (UE) 201 according to an embodiment of the invention.UE201 includes storage Device 211, processor 212, transceiver 213, wherein transceiver 213 are coupled to antenna 214.UE201 may also include multiple modules, such as Measurement module 215 for carrying out radio signal measurement, for detect turkey and manage turkey report failure Event manager module 216, and it connect for carrying out cell selection (reselection) with RRC the RRC connections of foundation (re-establishing) Management module 217.Above-mentioned different module is functional module, and can be realized by software, firmware, hardware or combinations thereof.When (such as by executing program code 218) when being executed by processor 212, above-mentioned functional module may make UE to execute corresponding function. Base station can have similar structures, including multiple functional modules, to support correlation function.In one embodiment, transceiver 213 can For transmitter, cordless communication network is sent to for reporting turkey.

Fig. 3 is the schematic diagram for the first embodiment that turkey and relevant information are reported in cordless communication network 300.Nothing Line communication network 300 includes one eNB-eNB301, two eNB-eNB302 and UE303.When beginning, UE303 is in RRC Connection status, and the service eNB301 of serving cell is located at it by the RRC of foundation connections and is communicated (step 311).It is logical RRC connections are crossed, eNB301 stores UE contextual informations, and the identification information for the UE303 that wherein UE contextual informations are connect with RRC has It closes.For example, UE identification informations may include C-RNTI, cell ID and RRC connection full message authentication code (Message Authentication Code for Integrity,MAC-I).Later in step 321, UE303 detects the mistake such as RLF Lose event.UE303 records the radio signal metrical information in relation to RLF turkeies, for follow-up report.RLF report can Radio signal before occurring including RLF measures, such as Reference Signal Received Power (Reference Signal Received Power, RSRP) measurement/Reference Signal Received Quality (Reference Signal Received Quality, RSRQ) measurement. UE303 rests on RRC connection status and carries out cell selection.

In step 331, UE303 begins through eNB302 progress RRC connections and re-establishes process, and RRC connections is heavy New establish asks (RRC connection re-establishment request) to be sent to eNB302.RRC connections are built again Vertical request includes the UE identification informations of previous RRC connections, such as previous C-RNTI, previous cells ID and previous MAC-I.It receives After RRC connections re-establish request, RLF instructions are sent to eNB301 by eNB302 by X2 interface, and wherein RLF instructions include first Preceding UE identification informations, so that eNB301 may recognize that corresponding UE.But RLF instructions do not include actual RLF report, because Safe RRC connections are not yet established between UE303 and eNB302.

In demonstration example shown in Fig. 3, since before RRC connections re-establish trial, eNB302 is not yet ready for, institute Process failure is re-established with RRC connections.In step 333, RRC connections are re-established refuse information (RRC by eNB302 Connection re-establishment reject message) it is sent to UE303.In one embodiment, RRC connections weight Newly establishing refuse information may include that relevant information { X }, wherein relevant information { X } can be located at new information element (Information Element, IE) in.Relevant information { X } can be eNB302 in any information for being used for identifying UE303 later.Receive RRC companies It connects after re-establishing refuse information, UE303 enters RRC idle states in step 341.Later, NAS triggers RRC connections and builds immediately Vertical process.In general, if UE303 does not leave immediately, eNB302 is still the target BS of UE303.

In step 351, UE303 carries out RRC connections by eNB302 and establishes process.RRC connections are established in process, UE303 and eNB302 carries out downlinks (downlink, DL) at different levels and is synchronized with uplink (uplink, UL), negotiates and match It sets, and finally establishes new RRC connections.Since there is no relevant informations, and RAN/eNB302, RAN/eNB302 to be supplied to not to know simultaneously Whether road UE303 had previously been attached and failure.Therefore, UE303 can be assigned new C-RNTI.Process completion is established in connection Afterwards, in step 361, UE303 is by RRC connection setup complete messages (RRC connection setup complete Message) it is sent to eNB302.Above-mentioned RRC connection setup complete messages can indicate that UE303 has available RLF to report to eNB302 It accuses.In step 362, UE information requests (UE information request message) are sent to UE303 by eNB302, To ask UE303 to send available RLF report.In step 363, UE303 is by info response message (information Response message) it is sent to eNB302, wherein info response message includes RLF report and relevant information { X }.

After receiving RLF report and relevant information { X }, eNB302 can be based on relevant information { X } and identify UE303.It is more clear For, eNB302 re-establishes refuse information by RRC connections and relevant information { X } is sent to UE303 (steps 333), and UE303 sends back identical relevant information { X } to eNB302 (steps 363).Relevant information { X } is (logical with previous UE identification informations The RRC connections crossed in step 331 re-establish request and receive) it is unique related.Thus, which eNB302 can recognize that UE303 and obtain Take previous UE identification informations.In step 364, the RLF report received is sent to previously service eNB301 by eNB302.This Outside, eNB302 by X2 interface by the previous UE identification informations of UE303 (such as previous C-RNTI, previous cells ID and previously MAC-I) it is sent to eNB301.

Based on UE identification informations, eNB301 can be by the RLF report received UE303 identical as what is received in step 332 Previous RLF instructions it is related and context-sensitive with the previous UE that is stored in eNB301, to avoid bookkeeping is repeated.In addition, ENB301 can preferably make MRO decisions based on the measurement result for including in RLF report.By using correlation, UE303 is not necessarily to It tracks and records identification information or UE identification informations is added in RLF report, because network has known above- mentioned information.In general, The simpler the ends UE the better, and network-side should more undertake somewhat complex design.Relevant information { X } can be any letter of UE for identification Breath, or even can be a part for UE identification informations itself.

Fig. 4 is the schematic diagram for the second embodiment that turkey and relevant information are reported in cordless communication network 400.Wirelessly Communication network 400 includes one eNB-eNB401, two eNB-eNB402 and UE403.Fig. 4 is similar with Fig. 3.When beginning, There are RRC connection (steps 411) between UE403 and eNB401, and connect after detecting such as the turkey (step 421) of RLF It is connected to eNB402.In demonstration example shown in Fig. 4, the specific demonstration example of relevant information is used.In step 431, UE403 bases In certain RACH resources, the RACH opportunitys in certain System Frame Number (System Frame Number, SFN), by eNB402 into Row RACH processes, to carry out RACH transmission.Wherein, RACH resource such as RACH code (preamble code) above.RACH attempt at After work(, in step 432, RRC connections are re-established request and are sent to eNB402 by UE403.Wherein, RRC connections, which re-establish, asks Seek UE identification informations when previously being connect with eNB401 including UE403.In step 433, eNB402 will by X2 interface RLF instructions are sent to eNB401.It also may include UE identification informations in RLF instructions, so that eNB401 identifies corresponding UE.

Since eNB402 is not yet ready for, RRC connections re-establish process failure.In step 434, eNB402 is by RRC Connection re-establishes refuse information and is sent to UE403.Step 441~462 in Fig. 4 are similar with the step 341 in Fig. 3~362. In step 463, info response message is sent to eNB402 by UE403.Wherein, info response message include RLF report at The relevant information { RACH resource } that work(RACH is attempted.Since RACH resource is generally uniquely related to UE403, eNB402 can be by upper State relevant information identification UE403.After receiving RLF report and relevant information { RACH resource }, eNB402 can be based on relevant information { RACH resource } identifies the previous UE identification informations of UE403.In step 464, eNB401 receives RLF report and UE403 Previous UE identification informations (such as previous C-RNTI, previous cells ID and previous MAC-I).Based on UE identification informations, eNB401 can Determine that the RLF report received is related to the previous RLF of the same UE403 received in step 433 instructions, to avoid book is repeated Note.In addition, eNB401 can preferably make MRO decisions based on the measurement result for including in RLF report.

In a specific demonstration example, during RRC connections, UE403 receives relevant information from first base station eNB401.Phase Close information can unique identification UE or UE classification, one type UE use same or analogous parameter.For example, UE403 connects Relevant information is received, wherein relevant information is included in the new IE that eNB401 is provided by RRC information.UE403 then will be related Information and turkey report are sent to eNB402, and above-mentioned relevant information and turkey report are subsequently sent to eNB401.

In another specific demonstration example, the second base station and first base station can be the same base station.For example, UE is first connected In the first community serviced to first base station, the second community or even same cell that are then serviced by same base into Process is established in row RRC connections.

Fig. 5 is the schematic diagram for the 3rd embodiment that turkey and relevant information are reported in cordless communication network 500.Wirelessly Communication network 500 includes one eNB-eNB501, two eNB-eNB502 and UE503.Fig. 5 is similar with Fig. 3.When beginning, There are RRC connection (steps 511) between UE503 and eNB501, and connect after detecting such as the turkey (step 521) of RLF It is connected to eNB502.But in demonstration example shown in Fig. 5, when RRC connections re-establish process failure, eNB502 is not UE503 provides any relevant information (step 533).Another difference is step 563.In step 563, UE503 will Info response message is sent to eNB502, and wherein info response message includes RLF report.But, info response message is not wrapped Containing any UE identification informations, but include an instruction, the wherein instruction points out that there are previous RRC connections to re-establish trial.It lifts For example, info response message may include Boolean variable (Boolean variable) { RRC connections re-establish trial=very }. In step 564, eNB501 receives the RLF report and Boolean variable that eNB502 is sent.It is reported with RLF although eNB501 is not aware that Relevant accurate UE identification informations are accused, but are based on Boolean variable, in still possible " guesing out " RLF reports of eNB501 and step 532 The previous turkey indicated is related.

Aforesaid way is that UE indicates that there may be a kind of plain modes for repeating bookkeeping.UE need to only remember and indicate that it is losing It loses and has carried out RRC connections after event and re-establish trial, thus there is unsuccessfully event information to need to report.In addition, only when ensuring RAN Have been received when RRC connections re-establish request that (such as step 531), UE can just make above-mentioned instruction.It is above-mentioned to ensure to be nothing Line current source road control (Radio Link Control, RLC) confirms that (acknowledgement, ACK), MAC/ mixing are asked automatically Ask repeating transmission (Hybrid Automatic Repeat Request, HARQ) ACK or the RRC response messages received (such as in step The RRC connections received in 533 re-establish refuse information).This is because RRC connections re-establish process may due to damage Other reason failures such as bad radio connection, then RRC connections re-establish request can not correctly send RAN at all.Upper It states under situation, does not generate any X2RLF instruction messages, and the RLF report subsequently sent will not cause to repeat bookkeeping.Therefore Transmission is unsuccessfully taken into account, the statistical value of turkey can be more accurate, to reduce the number that mistake MRO is determined.

Fig. 6 is the schematic diagram for the fourth embodiment that turkey and relevant information are reported in cordless communication network 600.Wirelessly Communication network 600 includes one eNB-eNB601, two eNB-eNB602, three eNB-eNB603 and UE604.Fig. 6 with Fig. 3 is similar.When beginning, there are RRC connection (steps 611) between UE604 and eNB601, and are detecting the failure thing such as RLF Attempt to re-establish process (step 631) by eNB602 progress RRC connections after part (step 621).RRC connections re-establish into After journey failure, UE604 separately receives relevant information { X } (step 633).But in demonstration example shown in Fig. 6, UE604 is not stood Attempt to establish process by eNB602 progress RRC connections.On the contrary, when UE604 enters RRC idle states and stops one section Between, or using another kind RAT.UE may retain RLF report for a long time (such as larger than 48 hours), but UE for identification And determine that the relevant information of UE contexts is only useful when fresh.Judge whether fresh useful based on timer (such as judgement Whether the time between being reported from turkey to turkey is more than a certain threshold value) or whether another kind is used based on UE RAT.In another embodiment, if UE carries out the 2nd RRC connections and establishes process, relevant information is also no longer useful.

In demonstration example shown in Fig. 6, UE604 is using another kind RAT.Therefore, because relevant information { X } is no longer fresh, UE604 can be abandoned.Step 651~662 in Fig. 6 are similar with the step 351 in Fig. 3~362, and difference lies in UE604 to adopt RRC connections are carried out by different eNB603 with another RAT and establish process.In step 663, UE604 is by information response Message is sent to eNB603, and wherein info response message includes RLF report, but no longer includes the relevant information abandoned {X}.On the contrary, similar with 3rd embodiment shown in fig. 5, info response message includes an instruction, which points out exist first Preceding RRC connections re-establish trial.For example, info response message may include that { RRC connections re-establish trial to Boolean variable =true.In step 664, eNB601 receives the RLF report and Boolean variable that eNB603 is sent.Although eNB601 be not aware that with The relevant accurate UE identification informations of RLF report, but it is based on Boolean variable, eNB601 still may " guesing out " RLF report and step The previous turkey indicated in 632 is related.

The benefit for only providing fresh relevant information is dual.Firstly, since UE will not (i.e. RAN be when not needed Losing UE contexts and relevant information, there is no the used times) relevant information is provided, therefore load can be reduced.Furthermore it can avoid accidentally phase It closing (miss-correlation), such as new UE may be assigned another UE C-RNTI previously used, then new UE Context should not be related to the report of a certain turkey.It therefore, can be only after the RRC connections that immediately fail re-establish process RRC connections establish in process (i.e. since process is established in the NAS RRC connections for restoring triggering) and provide relevant information.The above method is non- Normal (not needing timer such as) easy to implement, and UE need not remember any information in relation to other RAT.

Fig. 7 is the flow chart that user equipment according to an embodiment of the invention detected and reported failure event method.In step In rapid 701, UE detects turkey in the first community by first base station service.Wherein, turkey may include RLF, HOF or RACH failures.In a step 702, UE carries out RRC connections by second community and establishes process, and wherein second community can be by Second base station provides service.In step 703, UE is after process is established in RRC connections by turkey report and turkey Relevant information be sent to the second base station, wherein relevant information indicate previously connection or connection attempt it is related to turkey, can Make identification of base stations UE related with turkey.

Fig. 8 is flow chart of the base station according to an embodiment of the invention by relevant information processing failure event methods.? In step 801, base station receives RRC connections from UE and re-establishes request, and wherein RRC connections, which re-establish, asks to indicate to be configured with the The turkey of the UE of one C-RNTI provides service by initial base station.In step 802, RRC connections are re-established sound by base station UE should be sent to.In step 803, base station carries out RRC connections by UE and establishes process, and the 2nd C-RNTI is distributed to UE. In step 804, the base station report of reception failure event and relevant information from UE.Wherein, relevant information indicates previous RRC connections It is related with turkey to re-establish trial.

As described above, UE only when the relevant information of RLF report is fresh, send relevant information to network.In RAT bays Jing Zhong, it is intended to meaning may be had no at all by UE contexts are related to RLF report progress.Between supplier (inter-vendor) Signaling transmission need to pass through test, and network is possible to not support interaction between all RAT.Therefore, for there may be more Scene is even for frequency (inter-frequency) scene between a supplier provides the RAT of RAN, more general way be by Reach all information needed for conclusion without demur (non-ambiguous conclusion) to be put into RLF report, rather than only Dependent on network correlation.Thus, the concept for providing relevant information can be extended easily, and it is applied between RAT or across frequency field Jing Zhong.That is, UE reports all information (full information) in relation to C-RNTI and cell identification information with RLF Announcement is supplied to network together, rather than only provides relevant information.Other details of RLF report between RAT explained below.

RLF report is used for optimizing handoff parameter, and detection covering problem.In general, long term evolution (Long Term Evolution, LTE) RLF report in system allow UE by the information in relation to connection failure event (such as RLF or HOF) report to Network.The information reported include available geographical location information (geographical location information) and Traverse measurement result can be used.But, current LTERLF reports can be only applied in RAT in (intra-RAT) scene.Nowadays Many networks in, due between the different system with different RAT technologies operation and maintenance management (Operation, Administration and Maintenance, OAM) interaction is limited, the poor performance that moves between RAT and it is not easy to detect It arrives.

It is an object of the present invention to enough information is added in RLF report, so as to be applied to scene between RAT, And the shortcomings that overcoming the prior art.Based on RLF report, network can be corrected operation and adjustment, to reduce failure.By More reliable information (compared with the available information of network plan) is provided in RLF report, the performance moved between RAT can be improved.

In one embodiment, in RLF report include UE configuration informations, wherein UE configuration informations are used for adjusting and limiting The opportunity measured between RAT.When turkey occurs, UE configuration informations can play a role, and such as can therefrom be inferred to desired UE travelling performances, and can be appreciated that and how to classify to turkey, to determine the severity of problem.More particularly, exist It may include measurement gap (gap) configuration, the finger for indicating RAT type or RAT numbers that UE is measured in one embodiment, in RLF report Show and indicate the carrier frequency that UE is measured or measured in which carrier frequency number instruction.

A kind of important situation of mobile failure is that networking command UE changes RAT, and UE cannot connect to target RAT between RAT. Although networking command UE change RAT may be due to redirecting, cell reselection (cell change), whether there is or not network-assisted (nets Network assists network such as that information is added, to help UE to be faster connected to Target cell) between the other types of network life such as transformation Enable, but above-mentioned condition be referred to as failing between RAT or RAT between HOF.Since system intercommunication (interoperability) is very complicated, The movement between RAT is usually supported only with simple mechanisms.For example, current LTE RLF reports do not support the related RAT of report Between HOF information.

In one embodiment, UE is connected to a radio access node (such as serving BS), network requirement UE connect from A kind of RAT is moved to another RAT, or is moved to another access point (another access point is from serving cell using different Dual-mode).After the mobile failure of connection, UE stores the record information (logged information) in relation to above-mentioned failure Come, network can retrieve record information later.In the present embodiment, the common triggering for detecting above-mentioned failure expires for timer (timer timeout), Timer receive network requirement in UE and connection are moved to another RAT's from a kind of RAT Start timing when order.In addition, UE may be needed to multiple Public Land Mobile Networks (Public Land Mobile Network, PLMN) ID progress Network Checks, to determine whether to be allowed to report recorded turkey.

Fig. 9 is will be between RAT due to too early switching command in cordless communication network 900 according to an embodiment of the invention HOF is reported to the schematic diagram of network.Cordless communication network 900 include UE901, one RAT-RAT1 902 (such as source network) with And two RAT-RAT2 903 (such as target network).In step 911, UE901 is connected to source network RAT1 902.In step In 912, UE901 records traverse measurement as a result, and reporting traverse measurement result to RAT1 902.In step 913, UE901 Switching command is received from source network RAT1 902, wherein switching command requires UE901 to be connected to target network RAT2 903.So And above-mentioned switching command sends ground too early.In step 914, UE901 attempts to connect to target network RAT2 903.Due to cutting It changes order and sends too early, switching trial failure.UE901 then records the information in relation to above-mentioned failure.In step 915, UE901 Connect back to source network RAT1 902.UE901 then reports HOF information between the RAT of record to source network RAT1 902.

As shown in figure 9, if UE cannot connect to Target cell or target RAT, it is contemplated that operate and attempt a connection to return to it for UE Receive the source network of switching command (such as UE901 connects back to source network RAT1 902).In the present embodiment, it is contemplated that in cell-of-origin May have and determine when to carry out or whether carry out the configuration parameter switched between RAT, thus more cell-of-origin carry out for The correct operation of travelling performance between improvement RAT.In addition, in the present embodiment, the network with different RAT is with different OAM System, it is thus possible to can not be attached well.It is reduced as far as interacting between RAN and core net with different RAT Intercommunication problem can be effectively reduced, 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 carries out has particularly detection " blind (blind) " switching Meaning.So-called blind handover refers to providing triggering of the measurement report as switching without UE, and network direct command UE is moved.Its In, measurement report includes measurement results of the UE to Target cell.The correct operation carried out after blind handover failure can be setting UE It measures before the handover.Blind handover is widely used in making between the RAT that switching determines in scene based on demand for services.However, Although UE has been arranged sometimes to measure, such as based on affair triggering switching, UE is still potentially based on service trigger switching, i.e., blind It is switched to another RAT.Under the above conditions, switching is still considered as blind handover, but can not be by having checked in RLF report Measurement report is inferred to blind handover.Therefore, UE should report whether switching is blind handover, i.e., before movement directive, if having It reports to the measurement report to Target cell of network.In a demonstration example, the record information in relation to HOF between RAT includes pointing out Whether switching is being explicitly indicated (explicit indication) for blind handover.

Figure 10 be in cordless communication network 1000 according to an embodiment of the invention due to too late switching command will and between RAT HOF is reported to the schematic diagram of network.Cordless communication network 1000 includes UE1001, one RAT-RAT1 1002 (such as source network) And two RAT-RAT2 1003 (such as target network).In step 1011, UE1001 is connected to source network RAT1 1002. In step 1012, UE1001 records traverse measurement as a result, and reporting traverse measurement result to RAT1 1002.In step In 1013, UE1001 receives switching command from source network RAT1 1002, and wherein switching command requires UE1001 to be connected to target Network RAT2 1003.However, above-mentioned switching command send it is too late.Before receiving switching command, UE1001 is in RAT1 1002 encounter radio link failure.UE1001 then records the information in relation to failure.In step 1014, UE1001 Target network RAT2 1003 is attempted to connect to, and has successfully connected to target network RAT2 1003.In step 1015, UE1001 connects back to source network RAT1 1002, and HOF information between RAT is reported to source network RAT1 1002.

Caused by movement is typically due to service between RAT, and the movement (such as too late to be connected to Target cell) of some types It is easier to fail than other types of movement.Therefore, to solve the problems, such as, correct operation should determine mobile preferable execution type. In the present embodiment, record and report the type and reason that HOF information between the RAT of (step 1015) includes mobile, such as switching, again New orientation, network assisted cell gravity treatment (Network Assisted Cell Change, NACC), circuit domain dropping (Circuit-switched Fallback, CSFB), enhanced CSFB (enhanced CSFB) and injection frequency voice communication Continuously (Single Radio Voice Call Continuity, SRVCC) etc..

In addition, correct operation can be carried out sometimes by Target cell.In order to determine the need for being corrected by Target cell Operation loads obstruction (access load such as whether Target cell is needed to provide more RACH resources to record high access Blocking), it is necessary to know the more information in relation to failure cause.In one embodiment, it records and reports (step 1015) RAT between HOF information may include the type of failure, do not find such as Target cell, Target cell it is improper or be not allowed to and UE access Target cell is unsuccessfully etc..

Other than HOF between RAT, another common connection failure scene is that UE encounters connection when being connected to a cell Failure (such as RLF), subsequent UE are connected to another RAT after the failure.The above situation is referred to as RLF between RAT.For above-mentioned failure For, current LTE RLF reports can provide information sometimes, such as include available traverse measurement result.If in RLF report can It is indicated not with the neighboring community of frequency with traverse measurement result, but has neighboring community between suitable RAT, be then switched to above-mentioned RAT Between neighboring community may prevent failure.

However, problem is that UE may can't report the measurement of the neighboring community between RAT in RLF report, it is above-mentioned to ask One of the reason of topic is the configuration (such as not providing configuration for considering for economize on electricity) that UE does not carry out traverse measurement between RAT, another Kind reason is that the stopping measurement threshold value setting of serving cell is too low, so that UE is stopped at cell-of-origin and measured between RAT.It is real one Apply in example, be connected to radio access node (such as serving BS) UE detect RLF after, be subsequently attached to another RAT, or even It is connected to another access point, wherein another access point has different dual-modes from previous serving cell.UE store with RLF and The related record information of another another access points of RAT/.Network can then retrieve above-mentioned record information.

Figure 11 is by RLF report between RAT in cordless communication network 1100 according to an embodiment of the invention to source network Schematic diagram.Cordless communication network 1100 includes UE1101, one RAT-RAT1 1102 (such as source network) and two RAT-RAT2 1103 (such as target networks).In step 1111, UE1101 is connected to source network RAT1 1102.In step 1112, UE1101 Detect the radio link failure of source network.UE1101 records the information in relation to above-mentioned failure.In step 1113, UE1101 selection target cells, and process is established by RRC connections and is connected to target network RAT2 1103.UE1101 record with 1103 related information of RAT2 and the related information of selected Target cell being connect with UE1101.For example, it records Information may include the cell ID of selected Target cell.Wherein, cell ID includes the physical-layer cell identifier of RAT2 1103 (Physical Cell Identity, PCI), wherein PCI include primary synchronization signal (Primary Synchronization Signal, PSS), auxiliary synchronous signal (Secondary Synchronization Signal, SSS) and frequency.In step In 1114, UE1101 leaves RAT2 1103 (such as due to radio covering problem, or due to no longer needing to service).In step In 1115, UE1101 connects back to RAT1 1102, and enters connection status (such as due to radio covering problem, or due to needing to take Business).In step 1116, UE1101 is by RLF report between RAT to source network RAT1 1102.Wherein, RLF report includes between RAT The record information and UE1101 of radio link turkey are connected to target network RAT2 1103 and/or institute after the failure The record information of the Target cell of selection.When above- mentioned information can be used to identify the potential neighboring community with different RAT, and it is initial Service eNB may be not aware that above-mentioned potential neighboring community.

As shown in figure 11, in order to support the network that there are different RAT, can not be attached very well, in the domains OAM and PLMN In, for the correct operation carried out in the cell supporting unsuccessfully to occur or trigger, UE1101 can believe RLF between the RAT of record Breath report is to source network/RAT/ cells.Wherein, source network/RAT/ cells are the network/RAT/ cells for unsuccessfully occurring or triggering. More particularly, UE1101 records ID, carrier frequency and the RAT that UE is attached the selected cell of the process of foundation, or Record the global cell identifier (Global Cell Identity, GCI) it can be inferred that carrier frequency and RAT.Understand target After the RAT of cell, carrier frequency and ID, network can guarantee measuring configuration between RAT, moved between RAT.Understand connection or The ID for reconnecting cell can make network pass through triggering switching, send RLF to identification cell earlier.

In one embodiment, UE is recordable occurs or is triggered to from RLF to be successfully established connection (as UE has been selected being connected Target cell) between time.In another embodiment, UE is recordable occurs from RLF or is triggered to trial to be attached foundation Time between process.When UE can not be measured before unsuccessfully occurring or triggering (such as measure setup not carrying out RAT to UE), If from unsuccessfully shorter to the time connection, then it is assumed that the cell of connection or reconnect is preferable handover candidate cells.

Figure 12 is by RLF report between RAT in cordless communication network 1200 according to an embodiment of the invention to target network Schematic diagram.Cordless communication network 1200 includes UE1201, one RAT-RAT1 1202 (such as source network) and the 2nd RAT- RAT2 1203 (such as target network).In step 1211, UE1201 is connected to source network RAT1 1202.In step 1212, UE1201 detects the radio link failure of source network.UE1201 records information related with above-mentioned failure.In step 1213 In, UE1201 selection target cells, and process is established by RRC connections and is connected to target network RAT2 1203.In step 1214 In, UE1201 is by RLF report between RAT to target network RAT2 1203.RLF report includes the record in relation to RLF events between RAT Information.In order to support the future may appear the more complicated network with the different RAT preferably connected, UE1201 will record information Report that wherein target network/RAT/ cells are that latter linked net is unsuccessfully occurring or triggering for UE to target network/RAT/ cells Network/RAT/ cells.

In one embodiment, no matter RLF report between RAT is sent to source RAT or target RAT by UE, mainly by unsuccessfully sending out Raw or triggering cell is corrected operation.The ID of cell of UE record triggering radio link failures, carrier frequency and RAT, or record the global cell identifier it can be inferred that carrier frequency and RAT.Information is recorded to be included in RLF report, and In the source that is subsequently sent to/target RAT.Above- mentioned information can identify correct operation should carry out in which cell more easily.

No matter RLF report between RAT is sent to source RAT or target RAT by UE, in order to support failure and unsuccessfully occur or touch Definite UE configurations used by the cell-of-origin of hair are related, and support more complicated correct operation, and in one embodiment, UE is also answered Record following information：C-RNTI values used by UE (as unique at least in cell-of-origin or source RAN) in cell-of-origin, and can push away Break UE when using provided C-RNTI values temporal information (such as from unsuccessfully occur or be triggered to report fail between when Between).

In the demonstration example shown in Figure 11 and Figure 12, source network occurs or triggering radio link failure, and radio link Road may be unsuccessfully due to caused by too late switching.Similarly, radio link failure, and nothing can occur or trigger for target network Line electricity link failure may be caused by due to switching too early.

Figure 13 is to report HOF/RLF between RAT to triggering in cordless communication network 1300 according to an embodiment of the invention The schematic diagram of the network of turkey.Cordless communication network 1300 includes UE1301, (such as source nets of one RAT-RAT1 1302 Network) and two RAT-RAT2 1303 (such as target network).In step 1311, UE1301 is connected to source network RAT1 1302 In cell-of-origin.In step 1312, UE1301 receives switching command, wherein switching command requirement from source network RAT1 1302 UE1301 is connected to target network RAT2 1303.However, above-mentioned switching command sends ground too early.In step 1313, UE1301 Attempt to connect to target network RAT2 1303.Since switching command sends too early, above-mentioned switching trial failure.Alternatively, UE1301 It can be successfully connected to RAT2 1302 when starting, but shortly encounter radio link failure.UE1301 then records related The information of HOF/RLF.In step 1314, UE1301 selects Target cell in RAT1 1302, and is connected to RAT1 1302.Since HOF is triggered in RAT1 1302, UE1301 can report HOF information between RAT to RAT1 1302.

In the demonstration example shown in Figure 13, in step 1315, after UE1301 has connected back the RAT2 1303 of triggering RLF, UE1301 is by RLF report between RAT to RAT2 1303.RLF report may include selected cell ID and previous cells ID between RAT. Selected cell ID includes the PCI of Target cell in RAT1 1302, and wherein Target cell is that UE1301 is sent out in RAT2 1303 Cell (such as step 1314) attempted a connection to after raw or triggering RLF.It is connected after the failure to distinguish above-mentioned scene and UE1301 To the scene of another cell, selected cell ID information is needed.Previous cells ID includes the PCI of cell-of-origin in RAT1 1302, Wherein cell-of-origin is provides for UE1301 cell (such as step 1311) of service before switching.Previous cells id information is needed, it will Notice is sent to RAT1 1302 from RAT2 1303.

Figure 14 is the flow chart of RLF between the RAT of transmission within a wireless communication network according to an embodiment of the invention.In step In 1401, UE detects that turkey, wherein first community use the first RAT in the first community of first base station service.? In step 1402, UE carries out RRC with the second community selected and connect the process of foundation, wherein the second community selected is by second Base station services, and uses the 2nd RAT.In step 1403, turkey report is sent to cordless communication network by UE.Failure thing Part report includes the record information in relation to turkey.In one embodiment, turkey report includes carrying out RRC connections to establish ID, carrier frequency and the RAT of the cell of process, above- mentioned information will report to the first RAT.In another embodiment, failure thing Part report includes ID, carrier frequency and the RAT of the cell of turkey generation or triggering, and above- mentioned information will report to second RAT。

Figure 15 is the flow chart of HOF between the RAT of transmission within a wireless communication network according to an embodiment of the invention.In step In 1501, UE establishes radio connection in the first community using the first RAT.In step 1502, UE receives movement directive, Wherein above-mentioned movement directive requires UE to be moved to radio connection using the 2nd RAT's from using the first community of the first RAT Target cell.Movement directive is switching command, redirect, NACC, CFSB and improves CFSB or SRVCC etc..In step In 1503, UE detects turkey related with movement directive, and records the information in relation to turkey.In step 1504 In, UE, which reports turkey information between the RAT of record, gives network (such as turkey occurs or the network of triggering).Implement one In example, movement directive is switching command, and record information includes whether switching command is blind handover order.In another embodiment, It includes Fail Type to record information, as Target cell is not found, Target cell it is improper/be not allowed to or to access target small Area is unsuccessfully etc..

As described above, using RLF report in LTE system, UE is allowed to report the information in relation to connection failure event to net Network.Wherein, failure (such as RACH failures) is established in connection failure event such as RLF, HOF or connection.In general, RLF report is used for Optimize handoff parameter, and detection covering problem.But current LTE turkeies report does not support connection to establish the failure of failure Event is reported.If do not connect establish failure relevant information, can not just learn coverage hole (coverage hole) seriously with It is no.Therefore, for network, it is critically important to understand initial connection establishment failure.But Initial R RC connections establish failure can only be by UE is learnt, and network can not usually detect.Even if in the network that can detect failure, network still lacks identification connection and builds The information and other relevant informations of vertical failure position.

It is an object of the present invention to insufficient information is supplied to network when failure is established in connection by UE, to overcome The shortcomings that current techniques.In one embodiment, when connection foundation unsuccessfully occurs, UE provides failure in turkey report Detailed information, related location information and traverse measurement.Based on above-mentioned turkey report, network can be corrected operation and Adjustment, to reduce failure.

Figure 16 is the schematic diagram for the embodiment that failure reporting is established in connection in cordless communication network 1600.Wireless communication networks Network 1600 includes UE1601 and RAN1602.In step 1611, UE1601 is small to first in RRC idle states (camp) waiting Area.UE1601 thinks that cell waiting is suitable cell.In step 1612, UE1601 is attempted to connect in first community Network.The locally applied triggering that above-mentioned trial can be run by UE, can also be triggered by the paging of network.Connection, which is established, attempts general packet Include RACH processes.However, upon to many attempts, RACH processes are simultaneously unsuccessful.In step 1613, the related failure of UE1601 records The information of event.Later in step 1614, UE1601 is successfully entered RRC connection status.For example, based later on another The triggering of ground application, UE1601 is after initial connection establishment is connected with RRC and to be successfully established, the network that is connected in second community. In step 1615, turkey report is sent to network by UE1601.Turkey report includes the thin of previous turkey Save information, i.e., the record information of related initial connection establishment failure (such as RACH failures).It may be noted that being lost for initial connection establishment For losing, since UE is not connected to network at this time, turkey report may not include previous cells ID or previous C-RNTI.No It crosses, the still recordable cell ID that cell unsuccessfully occurs of UE, and records and previously connect cell (i.e. cell before RACH failures) C-RNTI。

In turkey report, UE can report the time that turkey occurs, and report available position and/or can use and move It is dynamic to measure.Location information is needed in possible RF or whole MPS process correct operations, and it is (such as small to carry out shift calibrating operation Area's reselection) need traverse measurement.In addition, traverse measurement can be used to do not have the precise position information of turkey in UE When, it is inferred to rough location information.If connect establish during attempt carry out RACH processes, UE can then report it is related The detailed information of RACH failures.

Figure 17 is the schematic diagram of RACH processes and an embodiment of RACH process failure reportings.In step 1711, RACH is sent to network 1702 by UE1701 above, to start RACH processes.In a scene, if multiple UE are simultaneously same RACH is sent in RACH resource above, may cause RACH collisions (collision).Thus, can not be to RACH above Into row decoding, UE1701 can not also receive RACH responses from network 1702.In another scene, though successfully to RACH above into Decoding is gone, but due to not enough bandwidth resources, network possibly can not permit uplink resource.Thus, UE1701 RACH responses can not be still received from network 1702.In above two scene, UE1701 step 1712 again attempt to RACH into Journey retransmits RACH above that is, after time-out and avoidance mechanism (timeout and a backoff mechanism).If RACH has enough bandwidth above by decoding success, then in step 1713, UE1701 receives RACH responses and uplink money Source is distributed.In step 1714, UE1701 sends Initial R RC message (such as message 3), to ask RRC to connect.If colliding, Then in step 1715, UE1701 transmits the message to network again.If asking successfully, in step 1716, UE1701 from Network 1702 receives contention resolution message (such as message 4).Finally in step 1717, UE1701 send RRC data, with network Establish RRC connections.

Due to many reasons, RACH is repeatedly being retransferred above and/or after RACH requests, RACH processes may be lost It loses.If initial connection establishment process proves an abortion, in step 1718, the detailed information of turkey is recorded UE1701 In turkey report.Turkey report includes following information：Whether UE detects that RACH conflicts (contention) solve Whether failure, UE are assigned special RACH resource, and whether UE receives in RACH responses is kept out of the way information, and whether UE, which receives, is taken office Whether what response and UE reach maximum power during RACH is attempted.

It is related with certain failure that record information contributes to Network Recognition to go wrong, and accordingly takes correct operation.For example, If distributing special RACH resource to UE, it is unlikely to occur RACH conflicts.If also distributing identical RACH resource (such as to other UE Identical RACH above or RACH resource), then may occur RACH conflict.On the other hand, keeping out of the way instruction means high load.Judge Whether failure may be extremely important due to overload (overload), because for overloading the correct operation taken and being directed to covering model It is very different to be with the correct operation that limit is taken.In addition, whether detecting that the information of any RACH responses contributes to really in relation to UE Determine RACH and is unsuccessfully happened at the first Conflict solving stage (contention resolution phase) or the second request negotiation Stage (request negotiation phase).This type of information can also indicate that other kinds of problem in network, such as all UE Base station fault when any RACH responses can not be received.Based on above- mentioned information, the correct operation taken for base station fault with The related operation of other loads, wireless resource management (Radio Resource Management, RRM) or RF is different.

In addition, UE can record and report session establishment/call attempt be it is Mobile Originated (Mobile Originated, MO) or mobile station receive (Mobile Terminated, MT), i.e., may indicate that in RLF report RRC connections establish process by Mobile Originated call setup triggering or the call setup triggering received by mobile station.Understanding foundation/call attempt is MO Or MT is necessary, because network can conclude therefrom that whether problem is asking for uplink related (uplink-related) Topic.Obviously, in MT callings, UE can be paged, but the uplink trial responded to paging can not succeed.

Figure 18 is the flow chart according to an embodiment of the invention for connecting and establishing failure reporting method.In step 1801, The cell that UE is serviced in RRC idle states base station to be connected to.UE thinks that cell waiting is suitable cell.In step 1802 In, UE detects that failure is established in connection when RRC connections are established in trial with base station progress RACH processes.RACH processes fail When, UE records turkey report.In step 1803, turkey report is sent to channel radio by UE in RRC connection status Communication network.Turkey report includes establishing the information attempted in relation to previous RRC connections.For example, whether information instruction UE Detect whether the failure of RACH Conflict solvings or UE in RACH processes reach maximum power.Turkey report may also include Available position information when initial connection establishment unsuccessfully occurs can use traverse measurement.

One embodiment of the invention can provide a kind of user equipment, including：Radio resource control connection management module, is used for Make cells of the UE in RRC idle states cordless communication network to be connected to；Turkey management module is used for connecting in RRC in UE When connecing during foundation is attempted with base station progress RACH processes, detection RACH processes failure, and record turkey report；And transmitting Machine, for after UE establishes RRC connections, turkey report being sent to cordless communication network in RRC connection status, wherein losing It includes establishing the information attempted in relation to the RRC connections to lose event report.

Although the present invention is disclosed above with regard to preferred embodiment, so it is not intended to limiting the invention.Skill belonging to the present invention Those of ordinary skill in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause This, protection scope of the present invention is subject to claims depending on before define.

Claims (4)

1. failure reporting method is established in a kind of connection, including：

Within a wireless communication network, the cell that user equipment is serviced in radio resource control idle state base station to be connected to；

When radio resource control is connected and established in trial with base station progress random access channel process, detect wireless Failure is established in electric resources control connection, is connect at random wherein the user equipment is recorded when the random access channel process fails Enter the report of channel turkey；And

Random access channel turkey report is sent to the wireless communication in radio resource control connection status Network, wherein turkey report includes connecting the random access channel established and attempted in relation to the radio resource control The information of process failure；

Wherein, the random access channel turkey report indicates whether the user equipment detects that random access channel is rushed It is prominent to solve failure, either indicate the user equipment whether reach in the random access channel process maximum power or Indicate whether to distribute special RACH resource to the user equipment, or whether the instruction user equipment detects Random access channel responses, or the instruction radio resource control connection establish process by Mobile Originated call setup Triggering or the call setup triggering received by mobile station.

2. failure reporting method is established in connection as described in claim 1, which is characterized in that the random access channel failure thing Part report includes the available position information when random access channel unsuccessfully occurs, or is lost including the random access channel Lose available traverse measurement when generation.

3. a kind of user equipment, including：

Radio resource control connection management module, for keeping the user equipment waiting in radio resource control idle state To the cell in cordless communication network；

Turkey management module, be used for the user equipment radio resource control connect establish attempt in base station into When row random access channel process, detection random access channel process failure, and record the report of random access channel turkey； And

Transmitter, for after the user equipment establishes radio resource control connection, shape is connected in radio resource control Random access channel turkey report is sent to the cordless communication network by state, wherein turkey report packet Include the information for being connected in relation to the radio resource control and establishing the random access channel process attempted failure；

Wherein, the random access channel turkey report indicates whether the user equipment detects that random access channel is rushed It is prominent to solve failure, either indicate the user equipment whether reach in the random access channel process maximum power or Indicate whether to distribute special RACH resource to the user equipment, or whether the instruction user equipment detects Random access channel responses, or the instruction radio resource control connection establish process by Mobile Originated call setup Triggering or the call setup triggering received by mobile station.

4. user equipment as claimed in claim 3, which is characterized in that the random access channel turkey report includes institute When stating available position information when random access channel unsuccessfully occurs, or unsuccessfully occurring including the random access channel can Use traverse measurement.