CN105592506A - Communication method, communication device and communication system - Google Patents
Communication method, communication device and communication system Download PDFInfo
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- CN105592506A CN105592506A CN201410571023.8A CN201410571023A CN105592506A CN 105592506 A CN105592506 A CN 105592506A CN 201410571023 A CN201410571023 A CN 201410571023A CN 105592506 A CN105592506 A CN 105592506A
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Abstract
The embodiment of the invention provides a communication method, a communication device and a communication system. The communication method comprises steps: a first base station receives a measurement report sent by a relay node (RN); if the first base station determines the handover target for the RN and UE (User Equipment) is a second base station according to a handover decision, the first base station sends a first message and a second message to a mobility management entity (MME), wherein the first message is used for requesting the second base station to prepare resources for the RN, the second message is used for requesting the second base station to prepare resources for the UE, and the MME is used for managing the first base station; and if the first base station knows from the MME the second base station already prepares the resources for handing over the RN and the UE, the first base station sends an RRC reconfiguration message to the RN to enable the RN and the UE to be handed over to the second base station.
Description
Technical field
The present invention relates to the communications field, and more specifically, relate to a kind of communication relevant to handoff procedureMethod, equipment and system.
Background technology
In existing communication process, subscriber equipment (UserEquipment, UE) switches to from source base stationTarget BS, needs first measurement report to be sent to source base station, carries out for this UE with trigger source base stationSwitch decision.
In existing a kind of communication system, UE may connect by via node (RelayNode, RN)Enter source base station, now, UE also needs to generate measurement report, and measurement report is sent to source base station,Carry out switch decision with trigger source base station for this UE.
Visible, in prior art, the switching that must provide measurement report can trigger base station by UE is sentencedCertainly process, this communication process more complicated.
Summary of the invention
The embodiment of the present invention provides a kind of communication means, equipment and system, can solve in prior artMust provide the switch decision process that measurement report can trigger base station to make communication process comparison by UEComplicated problem.
First aspect, provides a kind of communication means, and the method comprises: the first base station receives via nodeThe measurement report that RN sends, described measurement report be used for triggering described the first base station for described RN andThe user equipment (UE) that accesses described the first base station by described RN carries out switch decision; If describedOne base station determines that by described switch decision the switching target of described RN and described UE is the second base station,Described the first base station sends the first message and the second message to mobile management entity MME, wherein, described inIt is that described RN prepares resource that the first message is used for asking described the second base station, and described the second message is for askingAsking described the second base station is that described UE prepares resource, and described MME is used for managing described the first base station;If described the first base station knows that from described MME described the second base station prepared for switching described RNWith the resource of described UE, described the first base station sends RRC reconfiguration message to described RN, so thatDescribed RN and described UE switch to described the second base station.
In the possible implementation of first aspect the first, described the first base station receives the survey that RN sendsAfter amount report, described method also comprises: described RN is searched in described the first base station in the first list,And the UE corresponding with described RN in described the first list is defined as accessing described by described RNThe UE of one base station; Wherein, described the first list is used for preserving described RN and accesses by described RNCorresponding relation between the UE of described the first base station.
In conjunction with the possible implementation of first aspect the first, in the possible implementation of the second, instituteThe method of stating also comprises: in the time that described UE accesses described the first base station by described RN, and described the first baseStand and receive the context of described UE, the context of described UE comprises the mark of described UE.
In conjunction with the possible implementation of first aspect the second, in the third possible implementation, instituteThe method of stating also comprises: described in described the first base station is stored in the corresponding relation of described RN and described UEIn the first list.
In conjunction with first aspect the second or the third possible implementation, the 4th kind of possible realization sideIn formula, in the time that described UE accesses described the first base station by described RN, described method also comprises: instituteState the first base station and set up the first special GTP link between described the first base station and described RN, describedOne special GTP link sends to the signaling message of described MME for carrying described UE; Described firstThe context that base station receives described UE comprises: described the first base station receives described the first special GTP linkThe signaling message of carrying, described signaling message comprises the context of described UE.
In conjunction with any possible implementation in four kinds of first aspect the second to the, may at the 5th kindImplementation in, in the time that described UE accesses described the first base station by described RN, described method is alsoComprise: the first data GTP link between described the first base station and described RN is set up in described the first base station,Described the first data GTP link is corresponding one by one with described UE, and described the first data GTP link is used forCarry the data-message of the UE corresponding with described the first data GTP link.
In conjunction with any possible implementation in five kinds of first aspect the first to the, may at the 6th kindImplementation in, described method also comprises: at described UE after described the first base station attachment removal,Or after described the first base station switches to described the second base station, described the first base station will at described UEThe corresponding relation of described RN and described UE is deleted from described the first list.
In conjunction with any possible implementation in six kinds of the second to the of first aspect and the first method,In the 7th kind of possible implementation, described the second base station is known from described MME in described the first base stationAfter having prepared the resource for switching described RN and described UE, described method also comprises: describedThe corresponding relation of described RN and described UE is sent to described the second base station by one base station.
In conjunction with the 7th kind of possible implementation of first aspect, in the 8th kind of possible implementation,The corresponding relation of described RN and described UE is sent to described the second base station by described the first base station.
In conjunction with the 7th kind or the 8th kind of possible implementation of first aspect, the 9th kind of possible realizationIn mode, described method also comprises: described the second base station is by the corresponding relation of described RN and described UEBe stored in the second list.
In conjunction with nine kinds of possible implementations of the first to the of first aspect and first aspect, at the tenth kindIn possible implementation, described method also comprises: described RN receives described RRC reconfiguration message,Wherein, described RRC reconfiguration message is used to indicate described RN is switched to described the second base station; InstituteState RN transmission RRC and reshuffled message to described the second base station, described RRC has reshuffled and has disappearedBreath is used to indicate described RN and switches to described the by the UE that described RN accesses described the first base stationTwo base stations.
In conjunction with ten kinds of possible implementations of the first to the of first aspect and first aspect, the 11Plant in possible implementation, described method also comprises: described the second base station receives described RRC reprovisionPut message; The UE with described RN with corresponding relation is determined in described the second base station, and as instituteThe serving BS of stating RN and described definite UE provides service for described RN and described definite UE.
In conjunction with the 11 kind of possible implementation of first aspect, the 12 kind of possible implementationIn, described the second base station receives after described RRC reshuffled message, and described method also comprises:The the second special GTP link and second between described the second base station and described RN is set up in described the second base stationData GTP link; Wherein, described the second special GTP link is used for carrying described UE and sends to instituteState the signaling message of MME, described the second data GTP link is corresponding one by one with described definite UE,And described the second data GTP link is for carrying the UE's corresponding with described the second data GTP linkData-message.
In conjunction with 12 kinds of possible implementations of the first to the of first aspect and first aspect, the tenthIn three kinds of possible implementations, multiplely access described the first base station by described RN if existedUE, described the first base station sends to the second message of described MME to comprise multiple message, described multiple disappearingThe quantity of breath is identical with the quantity of described UE, and described multiple message is corresponding one by one with described UE, everyIndividual message is that the UE corresponding with described message prepares resource for asking described the second base station.
In conjunction with the 13 kind of possible implementation of first aspect, the 14 kind of possible implementationIn, described the first base station knows that from described MME described the second base station prepared for switching described RNComprise with the resource of described UE: described the first base station receives the first switching command that described MME sendsWith the second switching command, wherein, described the first switching command is used to indicate described the second base station and has prepared to useIn the resource of switching described RN; The quantity of described the second switching command is identical with the quantity of described UE,Described the second switching command is corresponding one by one with described UE, and each described the second switching command is used to indicate instituteState the second base station and prepared the resource for switching the UE corresponding with self.
In conjunction with the 14 kind of possible implementation of first aspect, the 15 kind of possible implementationIn, after described RN and described UE switch to described the second base station, described method also comprises: described inThe second base station sends handoff notification message to described MME, wherein, and the quantity of described handoff notification messageIdentical with the quantity of described UE, and described handoff notification message is corresponding one by one with described UE, each cuttingChanging notification message is used to indicate the UE corresponding with self and has switched to described the second base station.
Second aspect, provides a kind of communication equipment, and this equipment comprises: transmission unit and processing unit,Wherein, described transmission unit is used for: receive the measurement report that via node RN sends, described measurement reportAccuse for triggering described the first base station and access described the first base station for described RN with by described RNUser equipment (UE) carries out switch decision; Described processing unit is used for: determine institute by described switch decisionThe switching target of stating RN and described UE is the second base station; Described transmission unit also for: at described placeReason unit determine when the switching target of described RN and described UE is the second base station, send the first message andThe second message is to mobile management entity MME, and wherein, described the first message is used for asking described the second baseStand as described RN prepares resource, it is described UE standard that described the second message is used for asking described the second base stationStandby resource, described MME is used for managing described the first base station; Described transmission unit also for: from describedMME knows that described the second base station prepared the resource for switching described RN and described UE, concurrentSend RRC reconfiguration message to described RN, so that described RN and described UE switch to described secondBase station.
The third aspect, provides a kind of communication system, and this system comprises: the first base station and for administrative instituteState the mobile management entity MME of the first base station, wherein, described base station is used for: receive via node RNThe measurement report sending, described measurement report is used for triggering described the first base station for described RN and passes throughThe user equipment (UE) that described RN accesses described the first base station carries out switch decision; Sentence by described switchingThe switching target of certainly determining described RN and described UE is the second base station, and sends the first message and secondMessage is given described MME, and wherein, it is described RN that described the first message is used for asking described the second base stationPrepare resource, it is that described UE prepares resource that described the second message is used for asking described the second base station; When fromDescribed MME knows when described the second base station has been prepared the resource for switching described RN and described UE,Send RRC reconfiguration message to described RN, so that described RN and described UE switch to described theTwo base stations; Described MME is used for: receive described the first message and the second message, and by described the second baseThe information of preparing the resource for switching described RN and described UE of standing is notified to described the first base station.
Communication means, communication equipment and system that such scheme provides can be applicable to UE and access by RNThe scene of base station, and without the participating in directly of UE, can realize UE and follow RN and complete and switchedJourney. Such scheme also helps the treatment effeciency that improves communication equipment, and saves the storage of communication equipmentSpace.
Brief description of the drawings
Fig. 1 is the network architecture schematic diagram that one embodiment of the present of invention provide;
Fig. 2 is that the communication means that one embodiment of the present of invention provide is schematic flow sheet;
Fig. 3 is the structural representation of the communication equipment that provides of one embodiment of the present of invention;
Fig. 4 is the schematic diagram of the corresponding relation of a kind of RN of providing of one embodiment of the present of invention and UE;
Fig. 5 is the signal of the corresponding relation of the another kind of RN that provides of one embodiment of the present of invention and UEFigure;
Fig. 6 is the flow process signal of the communication means carried out of the communication equipment that provides of one embodiment of the present of inventionFigure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried outDescribe in detail, obviously, described embodiment is a part of embodiment of the present invention, instead of all realExecute example. Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative workPrerequisite under the every other embodiment that obtains, all should belong to the scope of protection of the invention.
Embodiments of the invention are applicable to plurality of communication systems, and for example, support terminal connects by via nodeEnter any communication system of base station. As shown in Figure 1, introduce as follows the network that this communication system can adoptAn embodiment of framework. This network architecture comprises following communication equipment: subscriber equipment (UserEquipment, UE) 10, via node (RealyNode, RN) 20, base station, mobile management is realBody (MobilityManagementEntity, MME) 50 and gateway (Serving-Gateway,S-GW) 60, wherein, base station comprises 30, the second base stations 40, the first base station.
Fig. 1 also shows in the network architecture, the annexation between each communication equipment. UE10 passes through RN20 access the first base stations 30, along with the movement of RN20, RN20 is switched to second from the first base station 30Base station 40, makes UE10 keep accessing the second base station 40 by RN20. As shown in Figure 1, firstBase station 30 and the second base station 40 can be unified MME50 management, and certainly, this MME50 also canRefer to the MME pond (MMEpool) being formed by multiple MME. In Fig. 1, at Access Network side, UE10And between RN20, be wireless connections, RN20 and the first base station 30 are nothings between (or second base station 40)Line connects, in core-network side: be to have between the first base station 30 (or second base station 40) and MME50Line connects, and between the first base station 30 (or second base station 40) and S-GW60, is also wired connection. NeedBe noted that communication process between the each communication equipment in embodiments of the invention can based on butBe not limited to above-mentioned connected mode.
Further, the network architecture as shown in Figure 1 also has the possibility of multiple variation, for example, and firstBase station 30 and the second base station 40 are managed by different MME respectively. And for example, the first base station and/or secondBase station 40 is not directly to communicate by letter with MME, but communicates by letter with MME by agent unit separately.
In conjunction with network architecture schematic diagram as shown in Figure 1, one embodiment of the present of invention provide a kind of asCommunication process shown in Fig. 2, this process can realize RN20 and switch to the second base from the first base station 30Stand 40. It should be noted that, in said process, UE10 keeps and being connected of RN20 always, whenWhen RN20 switches to the second base station 40 from the first base station 30, UE10 is also following RN20 and is realizingFrom the switching of 30 to second base stations 40, the first base station. In addition, UE10 is without participating in directly shown in Fig. 2Communication process. Above-mentioned " UE10 is without participating in said process directly " comprising: the process shown in Fig. 2The measurement report that need to not provide taking 10 of UE is direct trigger condition, each message shown in Fig. 2Do not need to be transmitted to UE10.
Exemplary, in the communication process shown in the network architecture shown in Fig. 1 and Fig. 2, the first base station30 can adopt structure as shown in Figure 3. Concrete, the communication equipment shown in Fig. 3 comprises transmission unit301, processing unit 302 and memory cell 304. Each unit in this communication equipment can adopt multiple sideFormula interconnects, and for example, adopts data/address bus 304 to realize above-mentioned connection. Exemplary, above-mentioned transmissionUnit 301 can connect for the information transmission and/or the information that realize between this communication equipment and other equipmentReceive. Above-mentioned processing unit 302 can be for realizing the judgement, calculating of this inside communication equipment, for itControl or the management etc. of his unit. Said memory cells 304 can be for realizing this inside communication equipmentInformation storage.
As shown in Figure 2, access by RN20 in the scene of the first base station 30 at UE10, thisA bright embodiment comprises the steps S1 to S8.
In step S1, RN20 sends measurement report (MeasureReport, MR) to the first baseStand 30. Wherein, this MR can cut for RN20 and UE10 for triggering the first base station 30Change judgement. Exemplary, this ME is generated by RN20, and comprises: this RN measures the second base station 40The information of the signal quality that certain community of controlling obtains.
Accordingly, the first base station 30 receives after this MR, sends handover request (HandoverRequired) give MME50 (step S2). Wherein, above-mentioned handover request comprises two class contents: (1)For the request of asking the second base station 40 to prepare resource for RN20, (2) are for asking the second base station 40For the request of UE10 preparation resource.
MME50 confirms that by step S3 and step S4 the second base station 40 is RN20 and UE10 standardThe situation of standby resource, and give the first base station 30 by step S5 by the advisory of confirming. Concrete,MME50 sends handover request (HandoverRequest) to the second base station 40 (step S3), theTwo base stations 40 send handoff response (HandoverACK) to MME50 (step S4). MME50Receive after this handoff response, send switching command (HandoverCommand) to the first base station 30(step S5). Wherein, above-mentioned switching command comprises two class contents: (1) is used to indicate the second base station 40Prepared the resource for switching RN20, (2) are used to indicate the second base station 40 and have prepared for switchingThe resource of UE10. Accordingly, the first base station 30 can judge: whether know second from MME50Base station 40 has been ready for the resource of switching RN20 and UE10, if so, and the first base station 30Transmission is used to indicate the RRC that RN20 is switched to the second base station 40 and re-establishes (RRCreConfig)Message is to RN20 (being step S6), optional, and the first base station 30 also sends the corresponding of RN and UERelation is given the second base station 40 (being step S6-1).
RN20 receives after above-mentioned RRC re-establishes message, can send be used to indicate RN20 andThe RRC that UE10 switches to the second base station 40 has re-established (RRCreconfigComplete) and has disappearedBreath is to the second base station 40 (being step S7). Next, the second base station 40 can send and be used to indicate RN20 and UE10 switched to the second base station 40 switching notice (HandoverNotify) give MME50(being step S8). Above-mentioned switching notice comprises two class contents: (1) is used to indicate RN20 and switches toThe second base station 40, (2) are used to indicate UE10 and have switched to the second base station 40.
It should be noted that, UE10 is by RN20 and base station communication, so UE10 can directly not feelKnow above-mentioned communication process. From the angle of the second base station 40, if the second base station 40 is at step S7In receive RRC and re-established message, the second base station 40 is considered as UE10 and RN20 all switchesTo this base station, and start the serving BS as UE10 and RN20. The second base station 40 can also be selectedSelect and send at this moment switching notice to MME50. From the angle of MME50, if MME50In step S8, receive switching notice, MME50 just knows that UE10 and RN20 are from the first baseThe handoff procedure of 30 to second base stations 40 of standing completes. From the angle of whole communication system, UE10The separation that is changed to the second base station 40 from the first base station 30 with the serving BS of RN20 is at step S7.
Further, communication means as shown in Figure 2 also comprises that RN20 and UE10 switch to the second baseStand after 40, between RN20 and the second base station 40, set up GTP link (step S9). Optionally,The GTP link is here divided into two classes: (1) special GTP link, is exclusively used in carrying UE10 and sendsGive the GTP link of signaling message of MME50, (2) data GTP link, for carrying withThe GTP link of the data-message of UE10. It should be noted that, in various embodiments of the present invention, base stationWith special GTP link between RN is corresponding to the S1 link between this base station and MME, base station andData GTP link between RN is corresponding to the data link between this base station and S-GW, hereinafter no longerRepeat. Exemplary, the special GTP link between base station and RN can adopt special GTP chainLine (tunnelID) is to be different from data GTP link.
The above-mentioned embodiment about communication means is as shown in Figure 2 applicable to the field that UE10 is single UEScape, is also applicable to the scene that UE10 comprises multiple UE. That is to say, access first by RN20The quantity of the UE of base station 30 does not affect the application of above-described embodiment.
Further, the UE10 in above-described embodiment is considered as to the set that formed by multiple UE, that is:Suppose that UE10 comprises UE10-1, multiple UE such as UE10-2, in above-described embodiment each communication equipment itBetween some message can carry out batch process, thereby improve treatment effeciency. Comprise with UE10 belowUE10-1 and UE10-2 are example, and the batch process of message in above-described embodiment is described in detail.
In step S2, the first base station 30 sends to the Equations of The Second Kind handover request of MME50 to carry outBatch process. Concrete, the first base station 30 sends multiple message, and each message is used for asking the second baseStand 40 is that UE prepares resource. That is to say, a message is corresponding with a UE, for requestThe second base station 40 is that the UE corresponding with message self prepares resource. In this case, above-mentioned messageQuantity is identical with the quantity of UE. Comprise that taking UE10 UE10-1 and UE10-2 are as example, the first base station30 send to the Equations of The Second Kind handover request of MME50 to comprise two message, wherein, message (depending onFor the message corresponding with UE10-1) for asking the second base station 40 for UE10-1 preparation resource, anotherIndividual message (being considered as the message corresponding with UE10-2) is for asking the second base station 40 for UE10-2 preparationResource.
In step S3 and step S4, the handover request that MME50 sends and the handoff response of reception are equalCan carry out batch process. Concrete, MME50 receives from the first base station 30 for eachHandover request sends the message that step S3 relates to, and receives the message that step S4 relates to. ThisThe benefit of sample is, MME50 does not need perception the first base station 30 to be because which kind of reason is initiated to switch,The method that a prior art of handover request execution that only need to receive for each provides, just canRealize step S3 between MME50 and the second base station 40 and the process of step S4. Therefore, MME50 need to be in order not implement the communication means that embodiments of the invention provide and to transform.
In step S5, MME50 sends to the Equations of The Second Kind switching command of the first base station 30 to carry outBatch process. Concrete, MME50 sends multiple message, and each message is used for being used to indicate the second base40 resources of having prepared for switching a UE of standing. That is to say, a message is corresponding with a UE,Be used to indicate the second base station 40 and prepared to switch the resource of the UE corresponding with message self. This situationUnder, the quantity of above-mentioned message is identical with the quantity of UE. Comprise UE10-1 and UE10-2 with UE10For example, MME50 sends to the Equations of The Second Kind switching command of the first base station 30 to comprise two message, wherein,A message (being considered as the message corresponding with UE10-1) is used to indicate the second base station 40 and has prepared for cuttingChange the resource of UE10-1, another message (being considered as the message corresponding with UE10-2) is used to indicateTwo base stations 40 have been prepared the resource for switching UE10-2.
In step S8, the second base station 40 sends to the Equations of The Second Kind switching notice of MME50 to carry outBatch process. Concrete, the second base station 40 sends multiple message, and each message is for a UESwitch to the second base station 40. That is to say, a message is corresponding with a UE, is used to indicate and messageThe UE of self correspondence has switched to the second base station 40. In this case, the quantity of above-mentioned message and UEQuantity identical. Comprise that taking UE10 UE10-1 and UE10-2 are as example, the second base station 40 sends toThe Equations of The Second Kind switching notice of MME50 comprises two message, and wherein, a message (is considered as and UE10-1Corresponding message) be used to indicate UE10-1 and switched to the second base station 40, another message (be considered as withThe message that UE10-2 is corresponding) be used to indicate UE10-2 and switched to the second base station 40.
In the above-described embodiments, the first base station 30 receives MR in step S1, need determine asWhat execution step S2. Concrete, the RN that sends MR can first be determined in the first base station 30, then basisDefinite RN searches by RN20 and accesses first base station 30 in the corresponding relation of RN and UEUE, then for definite RN and definite UE execution step S2.
For example, the first base station 30 can first judge that the MR receiving is which RN sends, and pinThis RN is carried out to switch decision. If confirm to switch this RN, further judge which UEAccess the first base station 30 by this RN. Then, the first base station 30 performs step S2.
And for example, the first base station 30 can first judge that the MR receiving is which RN sends, thenJudge which UE has accessed the first base station 30 by this RN. Then, switch and sentence for this RNCertainly. If confirm to switch this RN, the first base station 30 performs step S2.
Understandable, switch decision is carried out for RN in the first base station 30, and cuts for UEChange judgement and can adopt existing judgment condition and method, repeat no more herein.
The corresponding relation of RN and UE can be presented as and comprise RN mark (Identifier, ID) and UEIDThe list of corresponding relation. For example, this list comprises one or more RNID, and taking RNID asIndex (Index), each RNID is corresponding to one or more UEID (as shown in Figure 4). And for example,This list comprises one or more RNID, and the corresponding UEID of each RNID is (as Fig. 5 instituteShow). Understandable, no matter adopt above-mentioned which kind of list, the first base station 30 in above-described embodiment is allCan, after determining the RN that sends MR, adopt the ID Query List of definite RN, thereby reallyFixed and this RN has all UE of corresponding relation.
As a kind of possibility of above-described embodiment, the corresponding relation of RN and UE can be kept atIn one base station 30, determine fast RN and UE thereby be convenient to the first base station 30.
For example, if the first base station 30 in the time that UE10 accesses the first base station 30 by RN20, firstThe special GTP link between the first base station 30 and RN20 is set up in base station 30, this special GTP linkBe exclusively used in the signaling message that carrying UE10 sends to MME50; Further, the first base station 30 alsoSet up the data GTP link between the first base station 30 and RN20, these data GTP link is used for holdingCarry the data-message with UE10. Wherein, the first base station 30 can receive above-mentioned special GTP link and holdsThe context of the entrained UE10 of signaling message carrying. If the context of this UE comprises UE10'sMark, the first base station 30 can be by setting up above-mentioned list or upgrading above-mentioned list and preserve RN20Corresponding relation with UE10. Exemplary, the first base station 30 is special by the above-mentioned signaling message of carryingDefinite with GTP link: to be sent the context of UE10 by RN20, thereby know that UE10 passes throughRN20 accesses the first base station 30. If above-mentioned list has been preserved in the first base station 30, willThe corresponding relation of UE10 and RN20 adds above-mentioned list. If the first base station 30 is not preserved above-mentionedList, the corresponding relation of preserving UE10 and RN20 is equivalent to set up list.
And for example, in communication process as shown in Figure 2, the first base station 30 receives MME50 and sendsSwitching command after, the corresponding relation of RN and the UE that self can be preserved (for example RN20 andThe corresponding relation of UE10) send to the second base station 40 (step 6-1), optional, this corresponding relation canBeing that the first base station 30 sends to the second base station 40 by X2 interface, or, the first base station 30Send this corresponding relation to the second base station 40 via S-GW60. Further, the second base station 40 canPreserve this corresponding relation, and upgrade this corresponding relation in other communication process.
In order to improve the accuracy of above-mentioned list, and reduce as far as possible the storage sky that above-mentioned list takiesBetween, above-mentioned list can upgrade in time, particularly deletes in time invalid RN and the corresponding relation of UE,The scene of the corresponding relation of RN20 and UE10 having been preserved in the first base station 30 below illustrates.For example, if UE10 from the first base station 30 attachment removals, RN20 can be deleted in the first base station 30Corresponding relation with UE10. And for example, if UE10 switches to the second base station from the first base station 30The corresponding relation of RN20 and UE10 can be deleted in 40, the first base stations.
Fig. 6 shows a kind of inter-process flow process of communication equipment, and this handling process can be considered as Fig. 3Shown communication equipment as source base station 30 when the part communication process shown in execution graph 2 for example.Wherein, step 110 and step 170 can be by memory cell 303 (for example, in the controls of processing unit 302Under) complete, step 140 and step 160 can be by transmission unit 301 (for example, at processing units 302Under control) complete, step 120, step 130 and step 150 can by processing unit 302 (for example withThe information that the information that transmission unit 301 receives and/or memory cell 303 are preserved is basis) complete.
Exemplary, if memory cell 303 is preserved the corresponding relation (step 110) of RN and UE,Processing unit 302 is determined when transmission unit 301 receives the MR that RN sends (step 120), rootCarry out switch decision according to this MR, if determine switching, the content of preserving according to memory cell 303 is determinedThe UE (step 130) corresponding with the RN that sends MR. Then, processing unit 302 is controlled transmission listUnit sends message (step 140) to MME, and this message is used to indicate another communication equipment (with secondBase station 40 is example) be that this RN and UE prepare resource to realize this RN and UE to the second base station 40Switching. Next the information that, processing unit 302 can receive according to transmission unit 301 determinesWhen two base stations 40 have been ready to resource (step 150), control transmission unit 301 sends RRC and reshufflesMessage is given this RN, can also further control transmission unit 301 and send the corresponding pass of these RN and UESystem is to MME. If processing unit 302 determines that this RN and UE have been switched to the second base station 40,The corresponding relation of this RN and UE is deleted in control store unit 303. If memory cell 303 is also preservedThe context of this UE, processing unit can also control store unit 303 delete the upper and lower of these UELiterary composition, further to save memory space.
Communication means, communication equipment and system that embodiments of the invention provide, be applicable to UE and pass throughThe scene of RN access base station, without participating in directly of UE, to UE ability without particular/special requirement,Can realize UE follows RN and completes handoff procedure. Embodiments of the invention are also conducive to improve communication equipmentTreatment effeciency, and save the memory space of communication equipment.
It should be noted that communication means, communication equipment and system institute that embodiments of the invention provideIf the function relating to realizes also as independently production marketing or use using the form of SFU software functional unitTime, can be stored in a computer read/write memory medium. Based on such understanding, of the present inventionThe part that technical scheme contributes to prior art in essence in other words or the part of this technical schemeCan embody with the form of software product, this computer software product is stored in a storage mediumIn, comprise some instructions in order to make a computer equipment (can be personal computer, server,Or the network equipment etc.) carry out all or part of step of method described in the present invention each embodiment. And it is frontThe storage medium of stating comprises: USB flash disk, portable hard drive, read-only storage (ROM, Read-OnlyMemory),Random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. are various canWith program code stored medium.
The above be only the specific embodiment of the present invention, but protection scope of the present invention is not limited toIn this, any be familiar with those skilled in the art the present invention disclose technical scope in, can be easilyExpect changing or replacing, within all should being encompassed in protection scope of the present invention. Therefore, protection of the present inventionScope should described be as the criterion with the protection domain of claim.
Claims (40)
1. a communication means, is characterized in that,
The first base station receives the measurement report that via node RN sends, and described measurement report is used for triggering instituteState the first base station for described RN and access the user equipment (UE) of described the first base station by described RNCarry out switch decision;
If the switching order of described RN and described UE is determined in described the first base station by described switch decisionBe designated as the second base station, described the first base station sends the first message and the second message to mobile management entityMME, wherein, it is that described RN prepares resource, institute that described the first message is used for asking described the second base stationStating the second message is that described UE prepares resource for asking described the second base station, and described MME is for pipeManage described the first base station;
If described the first base station knows that from described MME described the second base station prepared for described in switchingThe resource of RN and described UE, described the first base station sends RRC reconfiguration message to described RN, withBe convenient to described RN and described UE and switch to described the second base station.
2. according to described method claimed in claim 1, it is characterized in that, described the first base station receivesAfter the measurement report that RN sends, described method also comprises:
Described RN is searched in described the first base station in the first list, and by described the first list with described inThe UE that RN is corresponding is defined as accessing by described RN the UE of described the first base station; Wherein, describedOne list is for preserving described RN and accessing right between the UE of described the first base station by described RNShould be related to.
3. according to described method claimed in claim 2, it is characterized in that, described method also comprises:
In the time that described UE accesses described the first base station by described RN, described in described the first base station receivesThe context of UE, the context of described UE comprises the mark of described UE.
4. according to described method claimed in claim 3, it is characterized in that, described method also comprises:
Described the first base station is stored in the corresponding relation of described RN and described UE in described the first list.
5. according to the method described in described claim 3 or 4, it is characterized in that,
In the time that described UE accesses described the first base station by described RN, described method also comprises: described inThe first special GTP link between described the first base station and described RN, described first are set up in the first base stationSpecial GTP link sends to the signaling message of described MME for carrying described UE;
The context that described the first base station receives described UE comprises: described the first base station receives described firstThe signaling message of special GTP link bearer, described signaling message comprises the context of described UE.
6. according to the method described in described claim 3 to 5 any one, it is characterized in that, describedWhen UE accesses described the first base station by described RN, described method also comprises:
The first data GTP link between described the first base station and described RN is set up in described the first base station,Described the first data GTP link is corresponding one by one with described UE, and described the first data GTP link is used forCarry the data-message of the UE corresponding with described the first data GTP link.
7. according to the method described in described claim 2 to 6 any one, it is characterized in that described sideMethod also comprises:
At described UE after described the first base station attachment removal, or at described UE from described the first baseAfter station switches to described the second base station, the correspondence of described RN and described UE is closed in described the first base stationSystem deletes from described the first list.
8. according to the method described in described claim 1 to 7 any one, it is characterized in that describedOne base station knows that from described MME described the second base station prepared for switching described RN and described UEResource after, described method also comprises:
The corresponding relation of described RN and described UE is sent to described the second base station by described the first base station.
9. according to described method claimed in claim 8, it is characterized in that, described the first base station is by instituteThe corresponding relation of stating RN and described UE sends to described the second base station.
10. according to the method described in described claim 8 or 9, it is characterized in that, described method is also wrappedDraw together:
Described the second base station is stored in the corresponding relation of described RN and described UE in the second list.
11. according to the method described in described claim 1 to 10 any one, it is characterized in that, described inMethod also comprises:
Described RN receives described RRC reconfiguration message, and wherein, described RRC reconfiguration message is used forDescribed RN is switched to described the second base station by instruction;
Described RN sends RRC and has reshuffled message to described the second base station, and described RRC reshufflesCompleting message is used to indicate described RN and switches to by the UE that described RN accesses described the first base stationDescribed the second base station.
12. according to the method described in described claim 1 to 11 any one, it is characterized in that, described inMethod also comprises:
Described the second base station receives described RRC and has reshuffled message;
Described the second base station determines with described RN to have the UE of corresponding relation, and as described RN andThe serving BS of described definite UE provides service for described RN and described definite UE.
13. according to the method described in described claim 12, it is characterized in that, described the second base station connectsReceive after described RRC reshuffled message, described method also comprises:
Described the second base station set up the second special GTP link between described the second base station and described RN andThe second data GTP link; Wherein, described the second special GTP link is used for carrying described UE transmissionThe signaling message of giving described MME, described the second data GTP link and described definite UE mono-are a pair ofShould, and described the second data GTP link is for carrying the UE corresponding with described the second data GTP linkData-message.
14. according to the method described in described claim 1 to 13 any one, it is characterized in that,
If there are multiple UE that access described the first base station by described RN, described the first base station is sent outSecond message of giving described MME comprises multiple message, the quantity of described multiple message and described UEQuantity identical, and described multiple message is corresponding one by one with described UE, described in each message is used for askingThe second base station is that the UE corresponding with described message prepares resource.
15. according to the method described in described claim 14, it is characterized in that, described the first base station fromDescribed MME knows that described the second base station prepared the resource bag for switching described RN and described UEDraw together:
Described the first base station receives the first switching command and the second switching command that described MME sends, itsIn, described the first switching command is used to indicate described the second base station and has prepared the money for switching described RNSource; The quantity of described the second switching command is identical with the quantity of described UE, described the second switching command withDescribed UE is corresponding one by one, and each described the second switching command is used to indicate described the second base station and has prepared to useIn the resource of switching the UE corresponding with self.
16. according to the method described in described claim 15, it is characterized in that, described RN and described inAfter UE switches to described the second base station, described method also comprises:
Described the second base station sends handoff notification message to described MME, and wherein, described switching notice disappearsThe quantity of breath is identical with the quantity of described UE, and described handoff notification message is corresponding one by one with described UE,Each handoff notification message is used to indicate the UE corresponding with self and has switched to described the second base station.
17. 1 kinds of communication equipments, is characterized in that, described equipment comprises transmission unit and processing unit,Wherein:
Described transmission unit is used for: receive the measurement report that via node RN sends, described measurement reportFor triggering described the first base station for described RN and accessing the use of described the first base station by described RNFamily equipment UE is carried out switch decision;
Described processing unit is used for: determine the switching of described RN and described UE by described switch decisionTarget is the second base station;
Described transmission unit also for: determine the switching of described RN and described UE at described processing unitWhen target is the second base station, send the first message and the second message to mobile management entity MME, wherein,It is that described RN prepares resource that described the first message is used for asking described the second base station, and described the second message is usedBe that described UE prepares resource in described the second base station of request, described MME is used for managing described the first baseStand;
Described transmission unit also for: from described MME know described the second base station prepared for switchThe resource of described RN and described UE, and send RRC reconfiguration message to described RN, so that instituteState RN and described UE and switch to described the second base station.
18. according to the equipment described in described claim 18, it is characterized in that, described equipment also comprisesFor preserving the memory cell of the first list, wherein, described the first list is used for preserving described RN with logicalCross the corresponding relation between the UE that described RN accesses described the first base station;
Described processing unit also for: after described transmission unit receives the measurement report that RN sends,In described the first list, search described RN, and by the UE corresponding with described RN in described the first listBe defined as accessing by described RN the UE of described the first base station.
19. according to the equipment described in described claim 18, it is characterized in that, described transmission unit alsoBe used for: in the time that described UE accesses described equipment by described RN, receive the context of described UE,The context of described UE comprises the mark of described UE.
20. according to the equipment described in described claim 19, it is characterized in that, described processing unit alsoBe used for: described in the described RN that described transmission unit is received and the corresponding relation of described UE are stored in, depositIn described first list of storage unit.
21. according to the equipment described in described claim 19 or 20, it is characterized in that,
Described processing unit also for: in the time that described UE accesses described the first base station by described RN,Set up the first special GTP link between described equipment and described RN, described the first special GTP chainRoad sends to the signaling message of described MME for carrying described UE;
Described transmission unit specifically for: receive the signaling message of described the first special GTP link bearer,Described signaling message comprises the context of described UE.
22. according to the equipment described in described claim 18 to 21 any one, it is characterized in that, described inProcessing unit also for: in the time that described UE accesses described equipment by described RN, set up described equipmentAnd the first data GTP link between described RN, described the first data GTP link and described UECorresponding one by one, described the first data GTP link is corresponding with described the first data GTP link for carryingThe data-message of UE.
23. according to the method described in described claim 18 to 22 any one, it is characterized in that, described inProcessing unit also for:
, after described equipment attachment removal, or switch to from described equipment at described UE at described UEAfter described the second base station, the corresponding relation of described RN and described UE is deleted from described the first listRemove.
24. according to the equipment described in described claim 17 to 23 any one, it is characterized in that, described inTransmission unit also for: knowing that from described MME described the second base station prepared for described in switchingAfter the resource of RN and described UE, the corresponding relation of described RN and described UE is sent to describedTwo base stations.
25. according to the equipment described in described claim 24, it is characterized in that described transmission unit toolBody is used for:
The corresponding relation of described RN and described UE is sent to described the second base station.
26. according to the equipment described in described claim 17 to 25 any one, it is characterized in that, ifThere are multiple UE that access described equipment by described RN, described transmission unit specifically for: sendComprise multiple message to the second message of described MME, the quantity of described multiple message and described UE'sQuantity is identical, and described multiple message is corresponding one by one with described UE, and each message is used for asking describedTwo base stations are that the UE corresponding with described message prepares resource.
27. according to the equipment described in described claim 26, it is characterized in that described transmission unit toolBody is used for: receive the first switching command and the second switching command that described MME sends, wherein, described inThe first switching command is used to indicate described the second base station and has prepared the resource for switching described RN; DescribedThe quantity of the second switching command is identical with the quantity of described UE, described the second switching command and described UECorresponding one by one, each described the second switching command be used to indicate described the second base station prepared for switch withThe resource of the UE of self correspondence.
28. according to the equipment described in described claim 27, it is characterized in that, described equipment is base station.
29. 1 kinds of communication systems, is characterized in that, comprising: the first base station and for managing described firstThe mobile management entity MME of base station, wherein,
Described base station is used for:
Receive the measurement report that via node RN sends, described measurement report is used for triggering described the first baseStand and switch for described RN with by the user equipment (UE) that described RN accesses described the first base stationJudgement;
Determine that by described switch decision the switching target of described RN and described UE is the second base station, andSend the first message and the second message to described MME, wherein, described in described the first message is used for askingThe second base station is that described RN prepares resource, and described the second message is used for asking described in described the second base station isUE prepares resource;
Prepare for switching described RN and described UE when know described the second base station from described MMEResource time, send RRC reconfiguration message to described RN, so that described RN and described UE cutChange to described the second base station;
Described MME is used for:
Receive described the first message and the second message, and described the second base station has been prepared for described in switchingThe information of the resource of RN and described UE is notified to described the first base station.
30. according to the system described in described claim 29, it is characterized in that, described system also comprisesDescribed RN; Wherein, described RN is used for:
Receive described RRC reconfiguration message, wherein, described RRC reconfiguration message is used to indicate instituteState RN and switch to described the second base station;
Send RRC and reshuffled message to described the second base station, described RRC has reshuffled messageBe used to indicate described RN and switch to described second by the UE that described RN accesses described the first base stationBase station.
31. according to the system described in described claim 30, it is characterized in that, described system also comprisesDescribed the second base station; Wherein, described the second base station is used for:
Receive described RRC and reshuffled message;
Determine the UE with described RN with corresponding relation, and as described RN and described definite UEServing BS provide service for described RN and described definite UE.
32. according to the system described in described claim 31, it is characterized in that, described the second base station alsoBe used for:
Set up the second special GTP link and the second data GTP between described the second base station and described RNLink; Wherein, described the second special GTP link sends to described MME's for carrying described UESignaling message, described the second data GTP link is corresponding one by one with described definite UE, and described secondData GTP link is for carrying the data-message of the UE corresponding with described the second data GTP link.
33. according to the system described in described claim 29 to 32 any one, it is characterized in that, described inThe first base station also for: after receiving the measurement report that RN sends described in the first list searchesRN, and the UE corresponding with described RN in described the first list is defined as accessing institute by described RNState the UE of the first base station; Wherein, described the first list is used for preserving described RN and passes through described RNAccess the corresponding relation between the UE of described the first base station.
34. according to the system described in described claim 33, it is characterized in that, described the first base station alsoBe used for: in the time that described UE accesses described the first base station by described RN, receive the upper and lower of described UELiterary composition, the context of described UE comprises the mark of described UE.
35. according to the system described in described claim 34, it is characterized in that, described the first base station alsoBe used for: the corresponding relation of described RN and described UE is stored in to described the first list.
36. according to the system described in described claim 33 to 35 any one, it is characterized in that, in instituteState UE after described the first base station attachment removal, or switch to from described the first base station at described UEAfter described the second base station, described the first base station is also for by the corresponding relation of described RN and described UEFrom described the first list, delete.
37. according to the system described in described claim 29 to 36 any one, it is characterized in that, described inThe first base station also for: know that from described MME described the second base station prepared for switching described RNAfter the resource of described UE, the corresponding relation of described RN and described UE is sent to described secondBase station.
38. according to the system described in described claim 37, it is characterized in that, described the first base station toolBody is used for: the corresponding relation of described RN and described UE is sent to described the second base station.
39. according to the system described in described claim 29 to 38 any one, it is characterized in that,
If there are multiple UE that access described the first base station by described RN, described the first base station toolBody is used for: send to the second message of described MME to comprise multiple message, the quantity of described multiple messageIdentical with the quantity of described UE, and described multiple message is corresponding one by one with described UE, and each message is usedBe that the UE corresponding with described message prepares resource in described the second base station of request.
40. according to the system described in described claim 39, it is characterized in that, described the first base station toolBody is used for:
Receive the first switching command and the second switching command that described MME sends, wherein, described firstSwitching command is used to indicate described the second base station and has prepared the resource for switching described RN; Described secondThe quantity of switching command is identical with the quantity of described UE, and described the second switching command and described UE are one by oneCorrespondence, each described the second switching command is used to indicate described the second base station and has prepared for switching and selfThe resource of corresponding UE.
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