CN102257852A - Rebuilding method of wireless resource control, user equipment, base station and communication system - Google Patents
Rebuilding method of wireless resource control, user equipment, base station and communication system Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W76/19—Connection re-establishment
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Abstract
The invention discloses a rebuilding method of wireless resource control, user equipment, a base station and a communication system. The rebuilding method of wireless resource control comprises: during the process of base station switchover, finding source cell information stored in user equipment, according to a cell global identification ECGI of source cell E-UTRAN; and sending request message of wireless resource control carrying the source cell information to the source cell base station of the source cell. The embodiment of the invention can send RRC rebuiding request message to the source cell base station, according to the source cell information stored in the UE, so that the source cell base station can control RRC rebuilding, according to the source cell information before UE switchover, and can reduce drop call rate of the UE during the process of switching between cell base stations.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of Radio Resource control method for reconstructing, subscriber equipment, base station and communication system.
Background technology
Existing 3GPP TS36.331 agreement (3GPP TS 36.331V8.13.0 (2011-03), particular content are referring to the 3GPP website: http://www.3gpp.org), subscriber equipment (User Equipment; Be called for short: UE) initiate Radio Resource control (Radio Resource Control; Be called for short: carry customer equipment identification (UE-Identity when RRC) rebuilding request; Be called for short: UEID) with reconstruction cause value (Reestablishment Cause).Wherein, UEID comprises: Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network Temporary Identify; Be called for short: CRNTI), Physical Cell Identifier (Physical Cell Identity; Be called for short: PCI) and the check value of persistent district (short MAC sign Short MAC-I).MAC is writing a Chinese character in simplified form of message authentication code Message Authentication Code.CRNTI is the CRNTI that the former persistent district (being the cell-of-origin) of UE distributes for this UE; PCI is the physical district ID of the former persistent district of UE; Short MAC-I is the check value that comes out according to the Target cell global cell ID COMPREHENSIVE CALCULATING such as (CGI:Cell Global Identification) of the CRNTI of the key of the former persistent district of UE, protection algorithm integrallty, physical district ID, the distribution of former persistent district and reconstruction.When base station (eNodeB) received that the RRC of UE rebuilds request message, at first the context that judges whether to exist this UE according to the CRNTI that wherein carries and PCI did not then return the following message of UE: RRC reestablishment rejected (ReEstablish Reject) message if do not exist; If there is the context of this UE, can also further carry out the verification of Short MAC-I, if verification is not by also returning the following message of UE: the reestablishment rejected message of RRC.
(Long Term Evolution, LTE) signaling interface between the base station in (eNodeB) is the Long Term Evolution communication system: X2 interface.UE (for example: the switching of striding X2 interface) in the process switches between the base station, issue switching command in source cell base station to target cell base station, but target cell base station as yet not to core net initiate that user's face upgrades during this period of time in, it is the PCT of the Target cell of switching that UE rebuilds the PCI that carries in the request message to the RRC that source cell base station sends, and the CRNTI that carries is the CRNTI that Target cell distributes for this UE.At this moment, source cell base station is rebuild these PCIs related with Target cell and the CRNTI that carry in the request message according to RRC can't find corresponding UE context, thereby can refuse this RRC and rebuild, and then may cause the UE call drop.
Patent application US20100278037A1 discloses a kind of method of handling identification collision in cordless communication network.
Patent application WO/2010/017961A1 discloses a kind of changing method in cordless communication network.
Summary of the invention
The embodiment of the invention provides a kind of Radio Resource control method for reconstructing, subscriber equipment, base station and communication system, rebuild the defective that causes the UE call drop because of the information of carrying switching target small area is rejected when initiating RRC reconstruction request message, reduce UE cutting off rate in the handoff procedure between the station of cell base station in order to solve prior art UE in switchover procedure between base station.
The embodiment of the invention provides a kind of Radio Resource control method for reconstructing, comprising:
In switchover procedure between base station, search the cell-of-origin information of preserving in the user equipment (UE) according to the E-UTRAN Cell Global Identifier ECGI of cell-of-origin;
Source cell base station to described cell-of-origin sends the Radio Resource control reconstruction request message that carries described cell-of-origin information.
The embodiment of the invention also provides a kind of Radio Resource control method for reconstructing, comprising:
When target cell base station sends handoff request message, preserve the intermediate key that described handoff request message is carried;
To transparent vessel cell and described intermediate key that source cell base station sends, obtain the Short-MAC I of cell-of-origin according to described target cell base station;
According to the corresponding relation between the customer equipment context information of the Short-MAC I of described cell-of-origin and described cell-of-origin, control described user equipment (UE) and rebuild to the Radio Resource control of described cell-of-origin.
The embodiment of the invention also provides a kind of subscriber equipment, comprises screen, internal memory, input/output port and processor, and described processor is used to carry out the Radio Resource control method for reconstructing that the embodiment of the invention provides.
The embodiment of the invention also provides a kind of subscriber equipment, comprises screen, internal memory, input/output port and processor, and described processor comprises:
Cell-of-origin information searching module is used at switchover procedure between base station, searches the cell-of-origin information of preserving in the subscriber equipment according to the ECGI of cell-of-origin;
Rebuild request module, be used for sending the Radio Resource control of carrying described cell-of-origin information and rebuild request message to described source cell base station.
The embodiment of the invention also provides a kind of base station, and internal memory, input/output port, power amplifier, processor, reflector and receiver, described processor are used to carry out the Radio Resource control method for reconstructing that the embodiment of the invention provides.
The embodiment of the invention also provides a kind of base station, comprises internal memory, input/output port, power amplifier, processor, reflector and receiver, and described processor comprises:
Intermediate key is preserved module, is used for preserving the intermediate key that described handoff request message is carried when target cell base station sends handoff request message;
The check value acquisition module is used for obtaining the Short-MAC I of cell-of-origin according to the transparent vessel cell and the described intermediate key of target cell base station to the source cell base station transmission;
Rebuild control module, be used for controlling of the Radio Resource control reconstruction of described subscriber equipment to described cell-of-origin according to the corresponding relation between the customer equipment context information of the Short-MAC I of described cell-of-origin and described cell-of-origin.
The embodiment of the invention also provides a kind of communication system, comprising: subscriber equipment, source cell base station and target cell base station;
The arbitrary described subscriber equipment that described subscriber equipment adopts the embodiment of the invention to provide; And/or, the arbitrary described base station that described source cell base station adopts the embodiment of the invention to provide;
Described target cell base station is used to receive the handoff request message that described source cell base station sends; Return switching response message to source cell base station.
Radio Resource control method for reconstructing, subscriber equipment, base station and the communication system of the embodiment of the invention, can send RRC to source cell base station according to the cell-of-origin information of preserving among the UE and rebuild request message, so that can switching preceding cell-of-origin information Control RRC according to UE, source cell base station rebuilds, can reduce UE cutting off rate in the handoff procedure between the station of cell base station, user's use experience is more excellent.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The Radio Resource that Fig. 1 provides for the embodiment of the invention one is controlled the schematic diagram of method for reconstructing;
The Radio Resource that Fig. 2 provides for the embodiment of the invention two is controlled the schematic diagram of method for reconstructing;
The Radio Resource that Fig. 3 provides for the embodiment of the invention three is controlled the schematic diagram of method for reconstructing;
The structural representation of the subscriber equipment that Fig. 4 provides for the embodiment of the invention four;
The structural representation of the subscriber equipment that Fig. 5 provides for the embodiment of the invention five;
The structural representation of the base station that Fig. 6 provides for the embodiment of the invention six;
The structural representation of the base station that Fig. 7 provides for the embodiment of the invention seven;
The structural representation of the communication system that Fig. 8 provides for the embodiment of the invention eight.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one
The Radio Resource that Fig. 1 provides for the embodiment of the invention one is controlled the schematic diagram of method for reconstructing, and as shown in Figure 1, this Radio Resource control method for reconstructing can may further comprise the steps:
Step 101, in switchover procedure between base station, according to E-UTRAN Cell Global Identifier (the E-UTRAN Cell Global Identity of cell-of-origin; Be called for short: ECGI) search the cell-of-origin information of preserving in the subscriber equipment (UE).Described cell-of-origin information comprises: the Physical Cell Identifier PCI of cell-of-origin, described cell-of-origin are the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI of described user equipment allocation and the short MAC sign Short-MAC I of described cell-of-origin;
Particularly, can preserve a cell information table among the UE, as 1 simple examples of following table.Comprise in this cell information table: cell-of-origin ECGI and the corresponding relation of UE cell information, (the E-UTRAN CGI of Target cell of UE before and after switching; Be called for short: ECGI) with the corresponding relation of UE cell information.Cell information comprises: the Physical Cell Identifier of corresponding ECGI (PCI), Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (CRNTI), Short-MAC I.
Table 1 cell information table
| ECGI | PCI | CRNTI | Short-MAC?I |
| 5 | 6 | 7 | 8 |
| 6 | 7 | 8 | 9 |
Under non-switch instances, preserve the information of persistent district (cell-of-origin) in this cell information table, when switching, increase the information of preserving Target cell at the cell information table.By the time behind the handover success, just remove cell-of-origin (persistent district before switching) information, can comprise following situation particularly:
Situation one, under non-switch instances, subscriber equipment can be with the ECGI of the cell-of-origin of described subscriber equipment and the corresponding relation of described cell-of-origin information, be saved in the cell information table of described subscriber equipment, wherein, preceding persistent district can be switched for described subscriber equipment in described cell-of-origin.
Situation two, if the cell-of-origin of described subscriber equipment sends handoff request message to Target cell, then subscriber equipment can be saved in the corresponding relation of the cell information of the ECGI of described Target cell and described Target cell in the cell information table of described subscriber equipment, and the cell information of described Target cell comprises: the Physical Cell Identifier PCT of Target cell, described Target cell are the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI of described user equipment allocation and the Short-MAC I of described Target cell.
Situation three, switch between the base station finish after, subscriber equipment can be deleted the corresponding relation of the cell information of the ECGI of described cell-of-origin and described cell-of-origin from the cell information table of described subscriber equipment.
In switchover procedure between base station, source cell base station issues switching command to target cell base station, but target cell base station is not initiated the renewal of user's face to core net as yet.During this period of time if UE need be reconstructed into the cell-of-origin before switching, then UE is according to the ECGI of the cell-of-origin that obtains from the system message of cell-of-origin, in the cell information table that UE preserves, find PCI, CRNTI, Short-MAC I to the cell-of-origin of ECGI that should the cell-of-origin, generate RRC then and rebuild request message, this RRC rebuilds PCI, the cell-of-origin of carrying the cell-of-origin in the request message and is the CRNTI of this UE distribution and the Short-MAC I of cell-of-origin.
Step 102, send the Radio Resource control carry described cell-of-origin information to source cell base station and rebuild request (RRC Reestablishment Request) message.So that the Physical Cell Identifier PCI of the described cell-of-origin that described source cell base station comprises according to described cell-of-origin information, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that described cell-of-origin is described user equipment allocation and the Short-MAC I of described cell-of-origin control described subscriber equipment and rebuild (RRC reconstruction) to the Radio Resource control of described cell-of-origin.
In switchover procedure between base station, the cell-of-origin receives that the RRC that this UE sends rebuilds request message, because this moment, handoff procedure did not finish as yet, the contextual information of UE is not deletion as yet, source cell base station can be rebuild the described cell-of-origin information of carrying in the request message according to RRC and be found contextual information to UE that should cell-of-origin information, therefore is achieved UE and rebuilds successfully.
Present embodiment is the improvement of carrying out in the UE side.Can send RRC to source cell base station according to the cell-of-origin information of preserving among the UE and rebuild request message, so that can switching preceding cell-of-origin information Control RRC according to UE, source cell base station rebuilds, avoid only carrying target cell information and being rebuild the UE call drop that produces when UE initiates the RRC reconstruction in switchover procedure between base station, can reduce the cutting off rate of UE in switchover procedure between base station by the source cell base station refusal.
Embodiment two
The Radio Resource that Fig. 2 provides for the embodiment of the invention two is controlled the schematic diagram of method for reconstructing, and as shown in Figure 2, this Radio Resource control method for reconstructing can may further comprise the steps:
Wherein, step 202 specifically can comprise:
If receive the switching response message that target cell base station is returned, then from target cell base station to the transparent vessel cell that the switching response message that source cell base station sends is carried, resolve the Physical Cell Identifier PCT that obtains Target cell, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that Target cell is described user equipment allocation and the protection algorithm integrallty of Target cell;
The request of obtaining sends to the intermediate key of described target cell base station when switching;
According to the protection algorithm integrallty of described intermediate key and described Target cell, calculate the integrity protection key of described Target cell;
According to the protection algorithm integrallty of the Physical Cell Identifier PCT of the integrity protection key of described Target cell, Target cell, Target cell, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that Target cell is described user equipment allocation and the ECGI of cell-of-origin, calculate the Short-MAC I of described cell-of-origin.
Present embodiment is the improvement of carrying out in base station side, the source cell base station side of sending by parsing target cell base station side that needs passes through the transparent vessel cell of UE, source cell base station can find corresponding UE contextual information according to the Short-MAC I of described cell-of-origin, therefore is achieved UE and rebuilds successfully.Avoid in switchover procedure between base station UE to return the cell-of-origin and carry out RRC and rebuild and refused, can reduce UE cutting off rate in the handoff procedure between the station of cell base station by source cell base station.
Embodiment three
The Radio Resource that Fig. 3 provides for the embodiment of the invention three is controlled the schematic diagram of method for reconstructing, as shown in Figure 3, in switchover procedure between base station, issue switching command in source cell base station, to target cell base station to the path that core net is initiated UE switch (PATH SWITCH) preceding during this period of time in, because UE carries target cell information rebuilds back source cell base station and refused, this Radio Resource is controlled method for reconstructing and specifically can be may further comprise the steps in order to prevent:
Step 301, when source cell base station sends handoff request message to target cell base station, source cell base station can preserve send to target cell base station intermediate key (for example: K
ENB*).Wherein, K
ENB*For using the key of integrality cryptographic algorithm between UE and the eNodeB, specifically can be referring to 3GPP TS24.301V8.9.0 (2011-03) agreement, 3GPP TS 33.401V8.7.0 (2010-04) agreement, particular content are referring to the 3GPP website: http://www.3gpp.org);
After step 302, source cell base station are received the handoff response that target cell base station returns, resolve to transparent vessel (Transparent Container) cell that source cell base station sends from target cell base station that to obtain Target cell be the CRNTI that distributes of UE and the protection algorithm integrallty of Target cell;
Step 303, source cell base station are according to the intermediate key (K that preserves in the protection algorithm integrallty of above-mentioned Target cell and the above-mentioned steps 301
ENB*) calculate the integrity protection key (K of Target cell
RRCint).Wherein, K
RRCintIntegrity protection key for the RRC signaling;
Step 304, source cell base station are according to the integrity protection key (K that calculates in the step 303
RRCint), the Target cell that obtains in the protection algorithm integrallty of the PCI of the ECGI of cell-of-origin, Target cell, Target cell and the step 302 is the CRNTI that UE distributes; can calculate the Short MAC-I of cell-of-origin, this Short MAC-I is the check value (Short MAC-I) that UE carries the cell-of-origin that need use when carrying out verification when target cell information RRC is reconstructed into the cell-of-origin.Source cell base station is further preserved the Short MAC-I and the cell-of-origin UE contextual information coupling of this cell-of-origin.That is, keep the Short MAC-I of cell-of-origin, cell-of-origin UE contextual information, and the mapping relations between the two.Like this, source cell base station just can be controlled the RRC reconstruction of this UE to the cell-of-origin according to the Short MAC-I of cell-of-origin and the corresponding relation of cell-of-origin UE contextual information.
Present embodiment is the improvement of carrying out in base station side, the source cell base station side of sending by parsing target cell base station side that needs passes through the transparent vessel cell of UE, source cell base station can find corresponding UE contextual information according to the Short-MAC I of described cell-of-origin, therefore is achieved UE and rebuilds successfully.Avoid in switchover procedure between base station UE to return the cell-of-origin and carry out RRC and rebuild and refused, can reduce UE cutting off rate in the handoff procedure between the station of cell base station, improve user's use experience by source cell base station.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be finished by the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program is carried out the step that comprises said method embodiment when carrying out; Aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Embodiment four
The structural representation of the subscriber equipment that Fig. 4 provides for the embodiment of the invention four, as shown in Figure 4, this subscriber equipment (UE) can comprise: screen (screen) 41, internal memory (memeory) 43, input/output port (I/O) 45 and processor 47 can further include other universal components.Wherein the processor of subscriber equipment is used for working procedure, and this program is when operation, and the Radio Resource control method for reconstructing in the foregoing description one is performed.
Cell-of-origin information searching module 471 is used at switchover procedure between base station, searches the cell-of-origin information of preserving in the subscriber equipment according to the ECGI of cell-of-origin.Described cell-of-origin information comprises: the Physical Cell Identifier PCI of cell-of-origin, described cell-of-origin are the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI of described user equipment allocation and the Short-MAC I of described cell-of-origin;
This cell-of-origin information is listed in the cell information table of preserving in the subscriber equipment, the description in the concrete reference example one.This cell information table can be stored in the internal memory or other memory units of subscriber equipment.
Rebuild request module 473, be used for sending the Radio Resource control of carrying described cell-of-origin information and rebuild request message to described source cell base station.So that described source cell base station is the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI of described user equipment allocation and the Short-MAC I of described cell-of-origin according to the Physical Cell Identifier PCI of described cell-of-origin, described cell-of-origin, controls described subscriber equipment and rebuild to the Radio Resource control of described cell-of-origin.
Particularly, in switchover procedure between base station, the cell-of-origin receives that the RRC that this UE sends rebuilds request message, because this moment, handoff procedure did not finish as yet, the contextual information of UE is not deletion as yet, source cell base station can be rebuild the described cell-of-origin information of carrying in the request message according to RRC and be found contextual information to UE that should cell-of-origin information, therefore is achieved UE and rebuilds successfully.
Present embodiment is the improvement of carrying out in the UE side, can send RRC to source cell base station according to the cell-of-origin information of preserving among the UE and rebuild request message, so that can switching preceding cell-of-origin information Control RRC according to UE, source cell base station rebuilds, avoid only carrying target cell information and being rebuild the UE call drop that produces when UE initiates the RRC reconstruction in switchover procedure between base station, can reduce the cutting off rate of UE in switchover procedure between base station by the source cell base station refusal.
Embodiment five
The structural representation of the subscriber equipment that Fig. 5 provides for the embodiment of the invention five, as shown in Figure 5, on the basis of embodiment four, the processor of this subscriber equipment can also comprise:
Cell-of-origin information storage module 51 is used for the ECGI of the cell-of-origin of described subscriber equipment and the corresponding relation of described cell-of-origin information are saved in the cell information table of described subscriber equipment, and described cell-of-origin is the persistent district before described subscriber equipment switches; And/or
Target cell information memory module 53, be used for if the cell-of-origin of described subscriber equipment sends handoff request message to Target cell, then the ECGI of described Target cell and the corresponding relation of described target cell information are saved in the cell information table of described subscriber equipment, described Target cell is the sub-district that described subscriber equipment need switch to, and described target cell information comprises: the Physical Cell Identifier PCI of Target cell, described Target cell are the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI RNTI of described user equipment allocation and the Short-MAC I of described Target cell;
Further, the processor of this subscriber equipment can also comprise:
Removing module 55 is used for after switching between the base station is finished the ECGI of described cell-of-origin and the corresponding relation of described cell-of-origin information being deleted from the cell information table of described subscriber equipment.
Present embodiment is the improvement of carrying out in the UE side, can send RRC to source cell base station according to the cell-of-origin information of preserving among the UE and rebuild request message, so that can switching preceding cell-of-origin information Control RRC according to UE, source cell base station rebuilds, avoid only carrying target cell information and being rebuild the UE call drop that produces when UE initiates the RRC reconstruction in switchover procedure between base station, can reduce the cutting off rate of UE in switchover procedure between base station by the source cell base station refusal.
Embodiment six
The structural representation of the base station that Fig. 6 provides for the embodiment of the invention six, as shown in Figure 6, this cell base station can comprise internal memory (memeory) 61, input/output port (I/O) 63, power amplifier 65, processor 67, reflector 68 and receiver 69, and other general module.Reflector can be to be connected with processor by power amplifier.Wherein the processor 67 of base station is used for working procedure, and this program is when operation, and the Radio Resource control method for reconstructing in the foregoing description two, three is performed.
Wherein, processor 67 may further include:
Intermediate key is preserved module 671, is used for preserving the intermediate key that described handoff request message is carried when target cell base station sends handoff request message;
Check value acquisition module 673 is used for obtaining the Short-MAC I of cell-of-origin according to the transparent vessel cell (Target eNB to Source eNB Transparent Container) and the described intermediate key of target cell base station to the source cell base station transmission;
Rebuild control module 675, be used for controlling of the Radio Resource control reconstruction of described subscriber equipment to described cell-of-origin according to the corresponding relation between the customer equipment context information of the Short-MAC I of described cell-of-origin and described cell-of-origin.Source cell base station can be according to the Short-MAC I of described cell-of-origin, and the corresponding relation between the UE contextual information of the Short-MAC I of described cell-of-origin and described cell-of-origin finds corresponding UE contextual information.
Present embodiment is the improvement of carrying out in base station side, the source cell base station side of sending by parsing target cell base station side that needs passes through the transparent vessel cell of UE, source cell base station can find corresponding UE contextual information according to the Short-MAC I of described cell-of-origin, therefore is achieved UE and rebuilds successfully.Avoid in switchover procedure between base station UE to return the cell-of-origin and carry out RRC and rebuild and refused, can reduce UE cutting off rate in the handoff procedure between the station of cell base station by source cell base station.
Embodiment seven
The structural representation of the base station that Fig. 7 provides for the embodiment of the invention seven, as shown in Figure 7, on the basis of embodiment six, the check value acquisition module 673 of processor 67 specifically can comprise in this cell base station:
Intermediate key acquiring unit 73 is used to obtain the intermediate key that sends to described target cell base station when asking to switch;
Integrity protection cipher key calculation unit 75 is used for the protection algorithm integrallty according to described intermediate key and described Target cell, calculates the integrity protection key of described Target cell;
Check value computing unit 77; be used for the integral algorithm of Physical Cell Identifier PCI, Target cell, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that Target cell is described user equipment allocation and the ECGI of cell-of-origin, calculate the Short-MAC I of described cell-of-origin according to described integrity protection key, Target cell.
Present embodiment is the improvement of carrying out in base station side, the source cell base station side of sending by parsing target cell base station side that needs passes through the transparent vessel cell of UE, source cell base station can find corresponding UE contextual information according to the Short-MAC I of described cell-of-origin, therefore is achieved UE and rebuilds successfully.Avoid in switchover procedure between base station UE to return the cell-of-origin and carry out RRC and rebuild and refused, can reduce UE cutting off rate in the handoff procedure between the station of cell base station by source cell base station.
Embodiment eight
The structural representation of the communication system that Fig. 8 provides for the embodiment of the invention eight, as shown in Figure 8, this communication system can comprise: subscriber equipment 81, source cell base station 85 and target cell base station 83;
Described subscriber equipment adopts the subscriber equipment of arbitrary structure in the embodiment of the invention; And/or described source cell base station adopts the base station of arbitrary structure in the embodiment of the invention;
Described target cell base station is used to receive the handoff request message that described source cell base station sends; Return switching response message to source cell base station.
The improvement that present embodiment can carry out in the UE side can send RRC to source cell base station according to the cell-of-origin information of preserving among the UE and rebuild request message, so that the cell-of-origin information Control RRC of source cell base station before can switching according to UE rebuilds; The improvement of also can base station side carrying out, the source cell base station side of sending by parsing target cell base station side that needs passes through the transparent vessel cell of UE, source cell base station can find corresponding UE contextual information according to the Short-MAC I of described cell-of-origin, therefore is achieved UE and rebuilds successfully; Avoid in switchover procedure between base station UE to return the cell-of-origin and carry out RRC and rebuild and refused, can reduce UE cutting off rate in the handoff procedure between the station of cell base station, improve user's use experience by source cell base station.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (27)
1. a Radio Resource control method for reconstructing is characterized in that, comprising:
In switchover procedure between base station, search the cell-of-origin information of preserving in the user equipment (UE) according to the E-UTRAN Cell Global Identifier ECGI of cell-of-origin;
Source cell base station to described cell-of-origin sends the Radio Resource control reconstruction request message that carries described cell-of-origin information.
2. method according to claim 1, it is characterized in that, described cell-of-origin information comprises: the Physical Cell Identifier PCI of cell-of-origin, described cell-of-origin is the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI of described UE distribution and the short MAC sign Short-MAC I of described cell-of-origin.
3. method according to claim 1 and 2 is characterized in that, described cell-of-origin information is used for: described source cell base station is rebuild to the Radio Resource control of described cell-of-origin according to the described subscriber equipment of described cell-of-origin information Control.
4. according to each described method of claim 1-3, it is characterized in that described ECGI is that described UE obtains from the system message of described cell-of-origin.
5. according to each described method of claim 1-3, it is characterized in that described cell-of-origin information is stored in the cell information table of described UE.
6. method according to claim 5 is characterized in that, described cell information table comprises: the corresponding relation of the cell-of-origin ECGI of described UE, described cell-of-origin ECGI and described cell-of-origin information.
7. according to each described method of claim 1-6, it is characterized in that, the described time period of representing in switchover procedure between base station is: source cell base station issues switching command to target cell base station, but target cell base station is not initiated the renewal of user's face to core net as yet.
8. according to each described method of claim 1-7, it is characterized in that described cell-of-origin is the persistent district before described subscriber equipment switches.
9. a Radio Resource control method for reconstructing is characterized in that, comprising:
When target cell base station sends handoff request message, preserve the intermediate key that described handoff request message is carried;
To transparent vessel cell and described intermediate key that source cell base station sends, obtain the Short-MAC I of cell-of-origin according to described target cell base station;
According to the corresponding relation between the customer equipment context information of the Short-MAC I of described cell-of-origin and described cell-of-origin, control described user equipment (UE) and rebuild to the Radio Resource control of described cell-of-origin.
10. method according to claim 9 is characterized in that, described transparent vessel cell is carried on described target cell base station in the switching response message that described source cell base station sends.
11., it is characterized in that the described step of obtaining the Short-MAC I of cell-of-origin comprises according to claim 9 or 10 described methods:
From described transparent vessel cell, resolve the Physical Cell Identifier PCI obtain Target cell, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that Target cell is described user equipment allocation and the protection algorithm integrallty of Target cell;
According to the protection algorithm integrallty of described intermediate key and described Target cell, calculate the integrity protection key of described Target cell;
According to the protection algorithm integrallty of the Physical Cell Identifier PCI of the integrity protection key of described Target cell, Target cell, Target cell, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that Target cell is described user equipment allocation and the ECGI of cell-of-origin, calculate the Short-MAC I of described cell-of-origin.
12., it is characterized in that described intermediate key is to use the key K of integrality cryptographic algorithm between UE and the base station according to each described method of claim 9-11
ENB*
13. according to claim 9 or 10 described methods, it is characterized in that, further comprise and from described transparent vessel cell, resolve the protection algorithm integrallty that obtains Target cell.
14. method according to claim 13 is characterized in that, further comprises:
The integrity protection key K that described source cell base station calculates described Target cell according to the protection algorithm integrallty and the described intermediate key of described Target cell
RRCintWherein, K
RRCintIntegrity protection key for the RRC signaling.
15. method according to claim 14 is characterized in that, further comprises:
Described source cell base station is according to described integrity protection key K
RRCint, the ECGI of described cell-of-origin, the PCI of described Target cell, described Target cell protection algorithm integrallty and described Target cell be the CRNTI that UE distributes, calculate the Short MAC-I of described cell-of-origin.
16. a subscriber equipment is characterized in that, comprises screen, internal memory, input/output port and processor, described processor is used for carrying out as each described method of claim 1-8.
17. a subscriber equipment is characterized in that, comprises screen, internal memory, input/output port and processor, described processor comprises:
Cell-of-origin information searching module is used at switchover procedure between base station, searches the cell-of-origin information of preserving in the subscriber equipment according to the ECGI of cell-of-origin;
Rebuild request module, be used for sending the Radio Resource control of carrying described cell-of-origin information and rebuild request message to described source cell base station.
18. subscriber equipment according to claim 17, it is characterized in that described cell-of-origin information comprises: the Physical Cell Identifier PCI of cell-of-origin, described cell-of-origin are the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI of described UE distribution and the short MAC sign Short-MAC I of described cell-of-origin.
19., it is characterized in that described cell-of-origin information is used for according to claim 17 or 18 described subscriber equipmenies: described source cell base station is rebuild to the Radio Resource control of described cell-of-origin according to the described subscriber equipment of described cell-of-origin information Control.
20., it is characterized in that described processor also comprises according to each described subscriber equipment of claim 17-19:
The cell-of-origin information storage module is used for the ECGI of the cell-of-origin of described subscriber equipment and the corresponding relation of described cell-of-origin information are saved in the cell information table of described subscriber equipment; And/or
The target cell information memory module is used for then the ECGI of described Target cell and the corresponding relation of described target cell information being saved in the cell information table of described subscriber equipment if the cell-of-origin of described subscriber equipment sends handoff request message to Target cell.
21. subscriber equipment according to claim 20 is characterized in that, described cell-of-origin is the persistent district before described subscriber equipment switches.
22. subscriber equipment according to claim 20, it is characterized in that described target cell information comprises: the Physical Cell Identifier PCI of described Target cell, described Target cell are the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI of described user equipment allocation and the Short-MAC I of described Target cell
23., it is characterized in that described processor also comprises according to each described subscriber equipment of claim 17-22:
Removing module is used for after switching between the base station is finished the ECGI of described cell-of-origin and the corresponding relation of described cell-of-origin information being deleted from the cell information table of described subscriber equipment.
24. a base station is characterized in that, comprises internal memory, input/output port, power amplifier, processor, reflector and receiver, described processor is used for carrying out as each described method of claim 9-15.
25. a base station is characterized in that, comprises internal memory, input/output port, power amplifier, processor, reflector and receiver, described processor comprises:
Intermediate key is preserved module, is used for preserving the intermediate key that described handoff request message is carried when target cell base station sends handoff request message;
The check value acquisition module is used for obtaining the Short-MAC I of cell-of-origin according to the transparent vessel cell and the described intermediate key of target cell base station to the source cell base station transmission;
Rebuild control module, be used for controlling of the Radio Resource control reconstruction of described subscriber equipment to described cell-of-origin according to the corresponding relation between the customer equipment context information of the Short-MAC I of described cell-of-origin and described cell-of-origin.
26. base station according to claim 25 is characterized in that, described check value acquisition module comprises:
Resolution unit, be used for if receive the switching response message that target cell base station is returned, then from target cell base station to the transparent vessel cell that the switching response message that source cell base station sends is carried, resolve the Physical Cell Identifier PCI that obtains Target cell, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that Target cell is described user equipment allocation and the protection algorithm integrallty of Target cell;
The intermediate key acquiring unit is used to obtain the intermediate key that sends to described target cell base station when asking to switch;
Integrity protection cipher key calculation unit is used for the protection algorithm integrallty according to described intermediate key and described Target cell, calculates the integrity protection key of described Target cell;
The check value computing unit; be used for the integral algorithm of Physical Cell Identifier PCI, Target cell, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI CRNTI that Target cell is described user equipment allocation and the ECGI of cell-of-origin, calculate the Short-MACI of described cell-of-origin according to described integrity protection key, Target cell.
27. a communication system is characterized in that, comprising: subscriber equipment, source cell base station and target cell base station;
Described subscriber equipment adopts as each described subscriber equipment of claim 16-23; And/or described source cell base station adopts as each described base station of claim 24-26;
Described target cell base station is used to receive the handoff request message that described source cell base station sends; Return switching response message to source cell base station.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2011/075581 WO2012167441A1 (en) | 2011-06-10 | 2011-06-10 | Radio resources control reestablishment method, user equipment, enodeb and communication system |
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| CN102257852B CN102257852B (en) | 2014-05-07 |
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Also Published As
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| CN102257852B (en) | 2014-05-07 |
| WO2012167441A1 (en) | 2012-12-13 |
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