CN110049577A - A kind of method and device that radio resource control RRC re-establishes - Google Patents
A kind of method and device that radio resource control RRC re-establishes Download PDFInfo
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- CN110049577A CN110049577A CN201810036826.1A CN201810036826A CN110049577A CN 110049577 A CN110049577 A CN 110049577A CN 201810036826 A CN201810036826 A CN 201810036826A CN 110049577 A CN110049577 A CN 110049577A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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Abstract
This application discloses a kind of method and device that radio resource control RRC re-establishes, UE after RRC connection is broken down, carry out the method that re-establishes of RRC include: re-establish that base station receives that UE sends re-establish request message；It wherein, include the EnodeB Id of the resident base station in the corresponding source UE in the request message；The global identity that adjacent base station is obtained from the neighboring BS information being locally configured, EnodeB Id is matched with the global identity of the adjacent base station；Determine that base station is resident in the source from the adjacent base station；It is resident the contextual information that base station sends X2 interface message request UE to source, and trigger source is resident base station and is re-established by X2 interface message to the reconstruction cell transmission contextual information realization RRC re-established on base station.Method and apparatus provided by the present application reduce the time delay that RRC is re-established, and reduce the processing complexity that overhead and RRC are re-established.
Description
Technical field
This application involves field of communication technology more particularly to a kind of method and devices that radio resource control RRC re-establishes.
Background technique
At present in LTE (Long Term Evolution, long term evolution) communication system, (User Equipment is used UE
Family terminal) RRC (Radio Resource Control, wireless heterogeneous networks) connection break down, further if there is
In the handoff procedure of base station fail, verify user context information integrality failure and RRC connection reconfiguration set it is any in unsuccessfully
When situation, it is abnormal to will lead to RRC connection status, needs to re-establish RRC connection, just can guarantee the communication of UE and base station after
It is continuous.The process that base station re-establishes at present is following (as shown in Figure 1):
Step 101, it re-establishes base station and receives to re-establish and search UE index after request message in this base station, UE initiates to weigh
Phyid and UE CRNT-I, shortMAC-I in source cell of source cell are carried when establishing, base station is after receiving this message
The context for inquiring this UE in a base station, the context (comprising security parameter) that UE is returned if successful inquiring are sent to UE
RRC re-establishes message, and process terminates.
Step 102, if inquiry failure, can pass through X2 mouthfuls of message (e.g., RLF according to prior art specification
Indication etc.) to (source base station are as follows: service before UE is re-established when stable state of source base station where potential source serving cell
Base station；Base station where the source cell serviced before UE is re-established in handoff procedure.Re-establishing base station is to send request UE context
Base station.) request UE contextual information: and trigger source cell and pass through X2 interface message (Handover Request) to the reconstruction
Reconstruction cell on vertical base station sends UE context.Re-establish the source base station selecting party that base station sends RLF Indication message
Method are as follows:
The target for having X2 link according to the PCI carried in request message row matching and our station in neighborhood region correlation chart is re-established
Base station.If finding multiple and this base station has built up X2 link base stations, the N adjacent base station for needing to find is upper and lower as sending
The Target Station of text request.Then RLF Indication message is sent to the N number of adjacent base station chosen.Send first RLF
Starting waits UE context timer after Indication message, and timer is dynamically configurable, it is proposed that duration is less than T301, it is proposed that
Value is (T301-100ms).
Step 103, it switches over acceptance judging and sends RRC and re-establish refuse information；Specific implementation may is that
Handover request message is received before timer expiry, switches over acceptance judging, stops timer；Such as
Fruit timer expiry then removes timer there are no handover request message is received, and re-establishes and refuses to UE transmission RRC
Hereafter exhausted message receives handover reques message again and then directly abandons.If receive handover reques message it
Overtime message is received again afterwards, then abandons overtime message.
Handover request information is received again after re-establishing message to UE transmission RRC then directly to abandon；It re-establishes
Base station receives the admission control that the switching request message of source base station transmission is switched over according to existing X2 switching flow later, receives
ACK message is replied after success.If re-establishing base station judgement receives failure, HANDOVER is replied to source base station
PREPARATION FAILURE message, while refuse information is re-established to UE transmission.Base station is re-established to receive back in completion switching
RRC can be sent to UE after multiple ACK re-establish message.
Step 104, receive re-establish successfully it is later reconfigure complete message after base station switch and ask to MME transmitting path
It asks.It receives path switching success command and sends context release message to source station later.
According to the description of prior art step 102 it was determined that taking re-establishing base station according to re-establishing in request message
When the PCI of band is matched in neighborhood region correlation chart and our station has the target BS of X2 link, it may be matched to N number of (N > 1) a base station,
Therefore it needs to send X2 message to multiple adjacent base stations and obtains UE contextual information, thus have the disadvantage in that
The random challenge mode that X2 message is sent to multiple adjacent base stations, extends the time re-established, adds additional and is
Expense of uniting and processing complexity.All base stations for receiving X2 message require to search context in all cells in station, that
A little adjacent base stations without UE context carry out meaningless inquiry operation, cause the meaningless expense of system.It is adjacent in hot spot group web area
Number of base stations is numerous, and when re-establishing, this mode that inquiry is broadcast the message on X2 chain road seriously affects system effectiveness.
Summary of the invention
The application provides a kind of method and device that radio resource control RRC re-establishes, to solve RRC in the prior art
The technical issues of extending and can additionally increase overhead and processing complexity when re-establishing.
In a first aspect, the application provides a kind of method that radio resource control RRC re-establishes, user terminal UE connects in RRC
It connects after breaking down, progress RRC, which is re-established, includes:
Re-establish that base station receives that the UE sends re-establishes request message；It wherein, include described in the request message
It is resident the global identity EnodeB Id of base station in the corresponding source UE；
The global identity for re-establishing base station and obtaining adjacent base station from the neighboring BS information being locally configured, by the EnodeB
Id is matched with the global identity of the adjacent base station；Determine that base station is resident in the source from the adjacent base station；
Base station is resident to the source and sends the contextual information of UE described in X2 interface message request, and it is resident to trigger the source
Base station sends the contextual information to the reconstruction cell re-established on base station by X2 interface message and realizes that RRC is rebuild
It is vertical.
In a kind of possible embodiment, re-establishing the request message that re-establishes that base station reception UE is sent includes:
It determines and receives the MSG3 comprising re-establishing request message in MAC protocol layer, the waiting time is set；
If the RRC for receiving rrc layer before the waiting time time-out re-establishes message, Xiang Suoshu UE is sent comprising competition
Solve the MSG4 that message is re-established with RRC；
If the waiting time is super, and the RRC for not receiving rrc layer re-establishes message, then sends out competition solution to the UE
Do not include RRC in certainly message MSG4, the MSG4 and re-establishes message；And reach maximum re-transmission time receiving MSG4 ACK or MSG4
RRC is sent after number re-establishes message.
In a kind of possible embodiment, the determination is received in MAC protocol layer comprising re-establishing request message
MSG3 includes:
Judge whether SRB0 data are all the first numerical value in the MSG3, if it is not, then judging in the SRB0 data
Set whether bit is second value, if not second value, it is determined that receive comprising re-establishing request in MAC protocol layer
The MSG3 of message.
In a kind of possible embodiment, the waiting time is that contention resolved timer duration is solved with competition is re-established
The certainly difference between message transmission duration.
Second aspect, provides a kind of method that radio resource control RRC re-establishes, and user terminal UE occurs in RRC connection
After failure, progress RRC, which is re-established, includes:
UE transmission re-establishes request message to re-establishing base station；It wherein, include described UE pairs in the request message
It is resident the global identity EnodeB Id of base station in the source answered；So that the base station that re-establishes is obtained from the neighboring BS information being locally configured
The global identity for taking adjacent base station matches the EnodeB Id with the global identity of the adjacent base station；From the adjacent base station
In determine that base station is resident in the source；It is resident the contextual information that base station sends UE described in X2 interface message request to the source,
And it triggers the resident base station in the source and the context is sent to the reconstruction cell re-established on base station by X2 interface message
Information realization RRC is re-established.
In a kind of possible embodiment, the UE transmission re-establishes request message to before re-establishing base station, also wraps
It includes:
The UE obtains the cell information of the last access cell from the mobility history information locally stored；
The global identity of base station is resident using the preceding 20bit of cellGlobalId in the cell information as the source
EnodeB Id。
The third aspect provides a kind of base station, comprising:
Receiving unit, for user terminal UE after RRC connection is broken down, receive the UE transmission re-establishes request
Message；It wherein, include the global identity EnodeB Id of the resident base station in the corresponding source the UE in the request message；
Matching unit, for obtaining the global identity of adjacent base station from the neighboring BS information being locally configured, by the EnodeB
Id is matched with the global identity of the adjacent base station；Determine that base station is resident in the source from the adjacent base station；
Information acquisition unit, for being resident the context letter that base station sends UE described in X2 interface message request to the source
Breath, and trigger the source and be resident the reconstruction cell transmission contextual information of the base station by X2 interface message on the base station
Realize that RRC is re-established.
In a kind of possible embodiment, the receiving unit, which is specifically used for determining, to be received in MAC protocol layer comprising weight
The MSG3 of request message is established, the waiting time is set；If the RRC for receiving rrc layer before the waiting time time-out is re-established
Message, Xiang Suoshu UE send the MSG4 that message is re-established comprising contention resolved and RRC；If the waiting time is super, and does not have
The RRC for receiving rrc layer re-establishes message, then sends out contention resolution message MSG4 to the UE, re-establish in the MSG4 not comprising RRC
Message；And RRC is sent after receiving MSG4ACK or MSG4 and reaching maximum retransmission and re-establishes message.
In a kind of possible embodiment, the receiving unit is also used to judge in the MSG3 whether SRB0 data are complete
For the first numerical value, if it is not, then judging to set whether bit is second value in the SRB0 data, if not second
Numerical value, it is determined that receive the MSG3 comprising re-establishing request message in MAC protocol layer.
In a kind of possible embodiment, the waiting time is that contention resolved timer duration is solved with competition is re-established
The certainly difference between message transmission duration.
Fourth aspect provides a kind of user terminal, comprising:
Transmission unit, for user terminal after RRC connection is broken down, transmission re-establishes request message to re-establishing base
It stands；It wherein, include the global identity EnodeB Id of the resident base station in the corresponding source the UE in the request message；So that described
The global identity that base station obtains adjacent base station from the neighboring BS information being locally configured is re-established, by the EnodeB Id and the neighbour
The global identity of base station is matched；Determine that base station is resident in source from the adjacent base station；Base station, which is resident, to the source sends X2
Interface message requests the contextual information of the UE, and triggers the resident base station in the source and re-established by X2 interface message to described
Reconstruction cell on base station sends the contextual information and realizes that RRC is re-established；
Receiving unit, for receive re-establish base station transmission RRC re-establish message.
In a kind of possible embodiment, the user terminal further include:
Acquiring unit, for obtaining the cell of the last access cell from the mobility history information that UE locally stores
Information；The global identity EnodeB of base station is resident using the preceding 20bit of cellGlobalId in the cell information as the source
Id。
5th aspect, the application also provide a kind of calculating equipment, comprising:
At least one processor, and
The memory that is connect at least one described processor communication, communication interface；
Wherein, the memory is stored with the instruction that can be executed by least one described processor, described at least one
The instruction that device is stored by executing the memory is managed, first aspect is executed using the communication interface or second aspect is any one
Method described in the possible embodiment of kind.
6th aspect, the application provide a kind of computer readable storage medium, the computer-readable recording medium storage
There is computer instruction, when the computer instruction is run on computers, so that computer executes first aspect or second party
Method described in any one possible embodiment of face.
The application has the beneficial effect that:
Method and apparatus provided by the embodiments of the present application are resident base station by increasing source in the request message that RRC is re-established
Global identity so that receive request message base station can fast searching to source persistent district initiate obtain UE context process and
Success rate is re-accessed to ensure.
Detailed description of the invention
Fig. 1 is the flow diagram that base station re-establishes in the prior art；
Fig. 2 is a kind of method flow schematic diagram that radio resource control RRC re-establishes provided by the embodiments of the present application；
Fig. 3 is that the base station provided by the embodiments of the present application that re-establishes is receiving when re-establishing request message in MAC protocol layer
Processing method flow diagram；
Fig. 4 is the method flow schematic diagram that another radio resource control RRC provided by the embodiments of the present application re-establishes；
Fig. 5 is the method flow schematic diagram for the global identity that base station is resident in acquisition source provided by the embodiments of the present application；
Fig. 6 is the use flow diagram of the embodiment of the present application providing method in specific example；
Fig. 7 is a kind of structural schematic diagram of base station provided by the embodiments of the present application；
Fig. 8 is a kind of structural schematic diagram of user terminal provided by the embodiments of the present application；
Fig. 9 is a kind of structural schematic diagram for calculating equipment provided by the embodiments of the present application.
Specific embodiment
In the prior art, base station is being re-established according to re-establishing the PCI carried in request message in neighborhood region correlation chart
When with the target BS for having X2 link with our station, N number of (N > 1) a base station may be matched to, it is therefore desirable to send out to multiple adjacent base stations
It send X2 message to obtain UE contextual information, sends X2 message to multiple adjacent base stations, extend the time re-established, add additional
Overhead and processing complexity.Therefore, when source persistent district how accurately and effectively to be selected to re-establish RRC connection as reduction
The key prolonged.
The embodiment of the present application proposes a kind of method that radio resource control RRC re-establishes, user terminal according to problem above
After RRC connection is broken down, progress RRC is re-established includes: UE
Re-establish base station reception UE transmission re-establishes request message；It wherein, include that the source UE is resident in the request message
The global identity EnodeB Id of base station；
The global identity for re-establishing base station and obtaining adjacent base station from the neighboring BS information being locally configured, by the EnodeB
Id is matched with the global identity of the adjacent base station；Determine that base station is resident in the source from the adjacent base station；
Base station is resident to the source and sends the contextual information of UE described in X2 interface message request, and it is resident to trigger the source
Base station sends the contextual information to the reconstruction cell re-established on base station by X2 interface message and realizes that RRC is rebuild
It is vertical.
The embodiment of the present application by the request message that RRC is re-established increase source be resident base station global identity so that
Receive request message base station can fast searching to source persistent district initiate obtain UE context process and for ensure re-access into
Power.
Method and apparatus provided by the embodiment of the present application are done further below in conjunction with attached drawing and specific application scenarios
Detailed description:
Embodiment one
A kind of radio resource control RRC provided by the embodiment of the present application is re-established below in conjunction with Figure of description 2
Method is further described in detail, and method provided by the embodiment of the present application after RRC connection is broken down, is carried out for UE
RRC is re-established, and this method specific implementation may comprise steps of:
Step 201, re-establish base station reception UE transmission re-establishes request message；Wherein, include in the request message
The UE is resident in corresponding source the global identity EnodeB Id of base station；
Step 202, the global identity that base station obtains adjacent base station from the neighboring BS information being locally configured is re-established, it will be described
EnodeB Id is matched with the global identity of the adjacent base station；Determine that base station is resident in source from the adjacent base station；
Step 203, the source Xiang Suoshu is resident base station and sends the contextual information of UE described in X2 interface message request, and triggers institute
It states the resident base station in source and the contextual information realization is sent to the reconstruction cell re-established on base station by X2 interface message
RRC is re-established.
Further, since this re-establishes the mistake that cell where process is related to user's source base station asks for context message
Journey, there are unstability for the time delay that message is transmitted on X2 link, so Target cell sends the time point that RRC re-establishes message
It downlink RRC can be easy to happen re-establishes message sending time and be greater than contention resolved duration when re-establishing than later, constitute competition
Solution causes to re-establish failure unsuccessfully to call drop.Therefore, in the embodiment of the present application occur across base station when re-establishing generation,
For the random access under this scene contention resolution message (MSG4) and RRC re-establish message send when separately handle.Weight
It establishes base station and is receiving processing method when re-establishing request message as follows (as shown in Figure 3) in MAC protocol layer:
Step 301, it re-establishes base station and determines that receiving in MAC protocol layer includes the MSG3 for re-establishing request message, setting etc.
To the time；
Wherein, because it is exactly that RRC re-establishes request, practical application that normal SRB0 data, which are not RRC foundation requests, in MSG3
In different requests can be corresponded to different data.Whether judge in MSG3 can be with comprising re-establishing the method for request message
It is to judge whether SRB0 data are all the first numerical value (0) in the MSG3, if it is not, then judging to set in the SRB0 data
Determine whether bit (the high 3bit of data) is second value (can be 2), if not 2, it is determined that receive packet in MAC protocol layer
Containing the MSG3 for re-establishing request message.
Wherein, the waiting time is contention resolved timer duration and re-establishes between contention resolution message transmission duration
Difference (default value can be 15ms).
Step 302, if the RRC for receiving rrc layer before the waiting time time-out re-establishes message, Xiang Suoshu UE is sent
The MSG4 of message is re-established comprising contention resolved and RRC；
Step 303, if the waiting time is super, and the RRC for not receiving rrc layer re-establishes message, then to the UE
Contention resolution message MSG4 is sent out, does not include RRC in the MSG4 and re-establishes message；And receiving MSG4ACK or MSG4 reaches most
RRC, which is sent, after big number of retransmissions re-establishes message.
Scheme through the foregoing embodiment can first send contention resolution message before contention resolved timer expiry and protect to UE
RRC, is then re-established message as common transmitting signaling downwards to UE by contention resolved success when card RRC is re-established.The implementation
Contention resolution message MSG4 and RRC when re-establishing RRC in example re-establish message separately send, so that RRC connection RRC is rebuild
The transmission of vertical message is no longer limited by contention resolved timer duration, is slowed down and is re-established base station to the resident base station acquisition UE in source
The delay requirement of context.Generation downlink RRC is avoided to re-establish message sending time greater than contention resolved duration when re-establishing
It constitutes competition and solves the problem of that failure causes to re-establish failure to call drop.
Embodiment two
As shown in figure 4, the implementation process based on terminal side, application also provides the reconstruction of another radio resource control RRC
Vertical method, after RRC connection is broken down, progress RRC is re-established includes: user terminal UE
Step 401, UE transmission re-establishes request message to re-establishing base station；It wherein, include described in the request message
It is resident the global identity EnodeB Id of base station in the corresponding source UE；So that the base station that re-establishes is from the neighboring BS information being locally configured
The middle global identity for obtaining adjacent base station, the EnodeB Id is matched with the global identity of the adjacent base station；From the neighbour
Determine that base station is resident in unique source corresponding with the UE in base station；Base station, which is resident, to the source sends X2 interface message request institute
The contextual information of UE is stated, and it is small to the reconstruction re-established on base station by X2 interface message to trigger the resident base station in the source
Area sends the contextual information and realizes that RRC is re-established.
Step 402, the RRC that UE reception re-establishes base station transmission re-establishes message, and sends to re-establish and complete message to institute
It states and re-establishes base station.
In the embodiment of the present application, UE transmission re-establishes request message to before re-establishing base station, it is also necessary to which the source of acquisition is stayed
The global identity of base station is stayed, specific implementation can be (as shown in Figure 5):
Step 501, UE obtains the cell information of the last access cell from the mobility history information locally stored；
In 36.331 agreement of 3GPP TS, the side UE can store in local variable VarMobilityHistoryReport
Mobility history information VisitedCellInfoList, the historical information are used to record what UE was resident recently
MaxCellHistory historical cell information.
Step 502, the whole world of base station is resident using the preceding 20bit of cellGlobalId in the cell information as the source
Identify EnodeB Id.
It is to be in RRC_CONNECTED state, and the cell information accessed is stored in UE before being re-established due to UE initiation
List in the variable V arMobilityHistoryReport of side is foremost.Therefore, UE is when generation RRC is re-established, Ke Yicong
The information that the last access cell is read in variable V arMobilityHistoryReport, accesses in cell information
CellGlobalId indicates the global identity (ECGI) of cell, and wherein CellIdentity is made of EnodeB ID+Cell Id,
Wherein preceding 20bit indicates that base station global identity EnodeB Id, rear 8BIt indicate the number of the Cell in the base station.Adjacent base station
Typically belong to the same PLMN (Public Land Mobile Network, public land mobile network), thus can only by
High 20bit information, that is, EnodeB Id (base station global identity) in cellIdentity is added to RRC and re-establishes request message
In, sentence specific as follows reads the whole world of cellGlobalId mark cell from variable V arMobilityHistoryReport
It identifies (ECGI)
EnodebId BIT STRING (SIZE (20)), optional
Embodiment three
As shown in fig. 6, below in conjunction with specific example to a kind of radio resource control RRC provided by the embodiment of the present application
The method re-established, specific implementation comprising steps of
Step 601, it re-establishes base station and receives to re-establish and search UE index after request message in this base station, UE initiates to weigh
The phyid and UE of source cell are carried when establishing in CRNT-I, shortMAC-I of source cell and the whole world mark of source base station
Know EnodebId.
In addition, re-establishing base station after receiving and re-establishing request message, request message transmits on X2 link in order to prevent
Time delay unstability, re-establish base station can MAC layer start setting waiting time timer, duration=competition of timer
It solves timer duration-and re-establishes contention resolution message transmission duration (default value can be 15ms).Rrc layer is inquired in a base station
The context message of the UE, the context (comprising security parameter) that UE is returned if successful inquiring send RRC to UE and re-establish
Message, process terminate.
Step 602, if inquiry failure, re-establishes base station and exist according to the Enodeb Id carried in request message is re-established
The target BS for having X2 link with our station is matched in neighborhood region correlation chart, is found with the matched adjacent base station of Enodeb Id as transmission
Base station is resident in the source of context request, is resident on base station requests UE by X2 mouthfuls of message (e.g., RLF Indication etc.) to source
Context information and trigger source cell by X2 interface message Handover Request it is small to the reconstruction re-established on base station
Area sends UE context.
In addition, starting waits UE context timer after sending RLF Indication message, timer can dynamically match
It sets, duration can be less than T301, and specific duration value can be (T301-100ms).
Step 603, after waiting time timer expiry is arranged in MAC layer, judge whether that the RRC for receiving rrc layer is re-established
Message just sends if confiscated and does not carry contention resolution message MSG4 to the UE that RRC re-establishes message, be then transferred to step
604.If the RRC for receiving rrc layer re-establishes message, sends and carries contention resolution message MSG4 to the UE that RRC re-establishes message,
And it is transferred to step 606.
Step 604, it re-establishes base station and determines that RRC re-establishes message and sends successfully, switch over acceptance judging；
The rrc layer for re-establishing base station receives the handover request message that base station is resident in source, switches over receiving and sentences
Certainly, stop UE context timer；If UE context timer expiry, there are no receiving handover request message,
Timer is then removed, RRC is sent to UE and re-establishes refuse information.
Step 605, it re-establishes base station and re-establishes message to UE transmission RRC after completing switching and receiving reply ACK；
When the transmission RRC re-establishes message, the MAC layer of base station is re-established after receiving the RRC and re-establishing message, is sentenced
It is disconnected whether to be transmitted across contention resolution message, if being transmitted across contention resolution message, caches RRC and re-establish message, waiting receives
MSG4ACK or MSG4, which reaches, just to be sent out RRC after maximum retransmission and re-establishes message.If not being transmitted across contention resolution message,
It then sends and carries the contention resolution message MSG4 that RRC re-establishes message；It is transferred to step 606.
Step 606, receive re-establish successfully it is later reconfigure complete message after, give MME transmitting path switching request.
It receives path switching success command and is resident base station transmission context release message to source later.
Example IV
As shown in fig. 7, the embodiment of the present application also provides a kind of base station, which may include:
Receiving unit 701, for UE after RRC connection is broken down, receive the UE transmission re-establishes request message；
It wherein, include the global identity EnodeB Id of the resident base station in the corresponding source the UE in the request message；
Wherein, which is specifically used for: determining and receives in MAC protocol layer comprising re-establishing request message
The waiting time is arranged in MSG3；If the RRC for receiving rrc layer before the waiting time time-out re-establishes message, Xiang Suoshu UE hair
Send the MSG4 that message is re-established comprising contention resolved and RRC；If the waiting time is super, and does not receive the RRC weight of rrc layer
Message is established, then sends out contention resolution message MSG4 to the UE, does not include RRC in the MSG4 and re-establish message；And it is receiving
Transmission RRC re-establishes message after MSG4ACK or MSG4 reaches maximum retransmission.
In achievable mode, the waiting time is contention resolved timer duration and re-establishes contention resolution message
Transmit the difference between duration.
Wherein, which determines that the mode for receiving the MSG3 comprising re-establishing request message in MAC protocol layer can
To be:
Judge whether SRB0 data are all the first numerical value in the MSG3, if it is not, then judging in the SRB0 data
Set whether bit is second value, if not second value, it is determined that receive comprising re-establishing request in MAC protocol layer
The MSG3 of message.
Matching unit 702 will be described for obtaining the global identity of adjacent base station from the neighboring BS information being locally configured
EnodeB Id is matched with the global identity of the adjacent base station；Determine that base station is resident in the source from the adjacent base station；
Information acquisition unit 703, for being resident the context that base station sends UE described in X2 interface message request to the source
Information, and trigger the resident base station in the source and the context letter is sent by reconstruction cell of the X2 interface message on the base station
Breath realizes that RRC is re-established.
Embodiment five
As shown in figure 8, the embodiment of the present application also provides a kind of user terminal, which may include:
Transmission unit 801, for user terminal after RRC connection is broken down, transmission re-establishes request message to reconstruction
Vertical base station；It wherein, include the global identity EnodeB Id of the resident base station in the corresponding source the UE in the request message；So that
The global identity for re-establishing base station and obtaining adjacent base station from the neighboring BS information being locally configured, by the EnodeB Id and institute
The global identity for stating adjacent base station is matched；Determine that base station is resident in the source from the adjacent base station；Base is resident to the source
It stands and sends the contextual information of UE described in X2 interface message request, and trigger the resident base station in the source and pass through X2 interface message to institute
It states the reconstruction cell transmission contextual information re-established on base station and realizes that RRC is re-established；
Receiving unit 802, for receive re-establish base station transmission RRC re-establish message.
In achievable mode, which can also include:
Mark acquiring unit, for re-establishing request message to before re-establishing base station in transmission, from the shifting locally stored
The cell information of the last access cell is obtained in dynamic property historical information；Before cellGlobalId in the cell information
20bit is resident the global identity EnodeB Id of base station as the source.
Embodiment six
As shown in figure 9, based on the same inventive concept, the embodiment of the present application also provides a kind of calculating equipment, referring to Fig. 9,
The equipment includes:
At least one processor 901, and
Memory 902, communication interface 903 with the communication connection of at least one described processor 901；
Wherein, the memory 902 is stored with the instruction that can be executed by least one described processor 901, it is described at least
It is real to execute the application using the communication interface 903 for the instruction that one processor 901 is stored by executing the memory 902
Apply the method that radio resource control RRC re-establishes in example one and/or embodiment two.
Based on the same inventive concept, the embodiment of the present application also provides a kind of computer readable storage medium, the calculating
Machine readable storage medium storing program for executing is stored with computer instruction, when the computer instruction is run on computers, so that computer is held
The method that radio resource control RRC described in row the embodiment of the present application one and/embodiment two re-establishes.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (11)
1. a kind of method that radio resource control RRC re-establishes, which is characterized in that user terminal UE breaks down in RRC connection
Afterwards, progress RRC, which is re-established, includes:
Re-establish that base station receives that the UE sends re-establishes request message；It wherein, include described UE pairs in the request message
It is resident the global identity EnodeB Id of base station in the source answered；
The global identity for re-establishing base station and obtaining adjacent base station from the neighboring BS information being locally configured, by the EnodeB Id
It is matched with the global identity of the adjacent base station；Determine that base station is resident in the source from the adjacent base station；
Base station is resident to the source and sends the contextual information of UE described in X2 interface message request, and is triggered the source and be resident base station
The contextual information, which is sent, to the reconstruction cell re-established on base station by X2 interface message realizes that RRC is re-established.
2. the method as described in claim 1, which is characterized in that re-establish base station reception UE transmission re-establishes request message packet
It includes:
It determines and receives the MSG3 comprising re-establishing request message in MAC protocol layer, the waiting time is set；
If the RRC for receiving rrc layer before the waiting time time-out re-establishes message, it includes contention resolved that Xiang Suoshu UE, which is sent,
The MSG4 of message is re-established with RRC；
If the waiting time is super, and the RRC for not receiving rrc layer re-establishes message, then disappears to UE hair contention resolved
MSG4 is ceased, does not include RRC in the MSG4 and re-establishes message；And after receiving MSG4ACK or MSG4 and reaching maximum retransmission
It sends RRC and re-establishes message.
3. method according to claim 2, which is characterized in that the determination is received in MAC protocol layer comprising re-establishing request
The MSG3 of message includes:
Judge whether SRB0 data are all the first numerical value in the MSG3, if it is not, then judging to set in the SRB0 data
Whether bit is second value, if not second value, it is determined that is received in MAC protocol layer comprising re-establishing request message
MSG3.
4. method as claimed in claim 2 or claim 3, which is characterized in that the waiting time be contention resolved timer duration with
Re-establish the difference between contention resolution message transmission duration.
5. a kind of method that radio resource control RRC re-establishes, which is characterized in that user terminal UE breaks down in RRC connection
Afterwards, progress RRC, which is re-established, includes:
UE transmission re-establishes request message to re-establishing base station；It wherein, include the UE corresponding in the request message
It is resident the global identity EnodeB Id of base station in source；So that the base station that re-establishes obtains neighbour from the neighboring BS information being locally configured
The global identity of base station matches the EnodeB Id with the global identity of the adjacent base station；From the adjacent base station really
It makes the source and is resident base station；Base station is resident to the source and sends the contextual information of UE described in X2 interface message request, and is touched
It sends out source described and is resident base station and the contextual information is sent to the reconstruction cell re-established on base station by X2 interface message
Realize that RRC is re-established.
6. method as claimed in claim 5, which is characterized in that UE transmission re-establish request message to re-establish base station it
Before, further includes:
The UE obtains the cell information of the last access cell from the mobility history information locally stored；
The global identity EnodeB of base station is resident using the preceding 20bit of cellGlobalId in the cell information as the source
Id。
7. a kind of base station characterized by comprising
Receiving unit receives the request that re-establishes that the UE is sent and disappears for user terminal UE after RRC connection is broken down
Breath；It wherein, include the global identity EnodeB Id of the resident base station in the corresponding source the UE in the request message；
Matching unit, for from the neighboring BS information being locally configured obtain adjacent base station global identity, by the EnodeB Id with
The global identity of the adjacent base station is matched；Determine that base station is resident in the source from the adjacent base station；
Information acquisition unit, for being resident the contextual information that base station sends UE described in X2 interface message request to the source, and
It triggers the resident base station in the source and the contextual information realization is sent by reconstruction cell of the X2 interface message on the base station
RRC is re-established.
8. base station as claimed in claim 7, which is characterized in that the receiving unit is specifically used for determining to be received in MAC protocol layer
To the MSG3 comprising re-establishing request message, the waiting time is set；If receiving rrc layer before the waiting time time-out
RRC re-establishes message, and Xiang Suoshu UE sends the MSG4 that message is re-established comprising contention resolved and RRC；If the waiting time
It is super, and the RRC for not receiving rrc layer re-establishes message, then sends out contention resolution message MSG4 to the UE, do not include in the MSG4
RRC re-establishes message；And RRC is sent after receiving MSG4ACK or MSG4 and reaching maximum retransmission and re-establishes message.
9. a kind of user terminal characterized by comprising
Transmission unit, for user terminal after RRC connection is broken down, transmission re-establishes request message to re-establishing base station；
It wherein, include the global identity EnodeB Id of the resident base station in the corresponding source the UE in the request message；So that the reconstruction
Vertical base station obtains the global identity of adjacent base station from the neighboring BS information being locally configured, by the EnodeB Id and the adjacent base station
Global identity matched；Determine that base station is resident in source from the adjacent base station；Base station, which is resident, to the source sends X2 interface
The contextual information of UE described in message request, and trigger the resident base station in the source and base station is re-established to described by X2 interface message
On reconstruction cell send the contextual information and realize that RRC is re-established；
Receiving unit, for receive re-establish base station transmission RRC re-establish message.
10. a kind of calculating equipment characterized by comprising
At least one processor, and
The memory that is connect at least one described processor communication, communication interface；
Wherein, the memory is stored with the instruction that can be executed by least one described processor, at least one described processor
By executing the instruction of the memory storage, side described in any one of 1-6 is required using the communication interface perform claim
Method.
11. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to
It enables, when the computer instruction is run on computers, so that computer is executed as of any of claims 1-6
Method.
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