CN101959265A - Relay switching method, system and equipment - Google Patents
Relay switching method, system and equipment Download PDFInfo
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- CN101959265A CN101959265A CN2009100893392A CN200910089339A CN101959265A CN 101959265 A CN101959265 A CN 101959265A CN 2009100893392 A CN2009100893392 A CN 2009100893392A CN 200910089339 A CN200910089339 A CN 200910089339A CN 101959265 A CN101959265 A CN 101959265A
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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Abstract
The embodiment of the invention discloses a relay switching method, a relay switching system and relay switching equipment. The relay switching method comprises that: when user equipment UE switches cells, a source node transmits a switching request message to a target node; the target node judges whether a target cell is a self-management cell according to the information of the target cell; when the target cell is a cell managed by the target node, the target node reserves corresponding resource for the target cell; and when the target node is RN and a path switching process is needed to be initiated for a core network, a path switching request message is transmitted to the core network, wherein the path switching request message carries a globally unique identifier of the core network. In the invention, when inner eNB cell switching is performed on the UE, the source node initiates an X2 switching request process for the target node, the switching process is finished in EUTRAN, and when resources requested by a source cell are totally received by the target cell, the core network is not needed to be notified after the switching is finished, and the signaling load on the core network is reduced.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of relaying changing method, system and equipment.
Background technology
LTE (Long Term Evolution, Long Term Evolution) is 3G (3rd Generation, 3-G (Generation Three mobile communication system)) evolution, LTE improves and has strengthened the aerial access technology of 3G, adopt OFDM (Orthogonal Frequency Division Multiplexing, OFDM) and MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) as the sole criterion of wireless network evolution.LTE can provide the peak rate of descending 100Mbit/s and up 50Mbit/s under the 20MHz spectral bandwidth, improved the performance of Cell Edge User, has improved cell capacity, and has reduced system delay.Wherein, the technical characterictic of LTE comprises that high data rate, grouping transmit, hang down delay, wide area covering and backward compatible.Along with increasing rapidly of number of users of mobile terminal amount, terminal use's volume of business is exponential increase, in order to satisfy the terminal use's who continues to increase business demand, the business and the needed more peak value speed of application that need provide bigger bandwidth to satisfy the terminal use.Promptly in the mobile communication system in future, for example among the B3G (Beyond three Generation, back three generations) or among the LTE-A (LTE-Advanced, senior LTE), system will provide higher peak data rate and cell throughout, also need bigger bandwidth simultaneously.Unassigned bandwidth below the 2GHz seldom at present, the part or all of bandwidth that B3G system (is that example describes with the B3G system) needs can only be on higher frequency range, for example on the frequency range more than the 3GHz, seek, and in the application of reality, frequency range is high more, it is fast more that radio wave propagation is decayed, and transmission range is short more; Promptly under same overlay area, guarantee continuous covering, then need more base station.Because the base station has higher cost, when a lot of base station of needs, will increase the cost of creating network.In order to address the above problem, each manufacturer and standardization body are incorporated into relaying (relay) in the cellular system, thereby increase the zone that covers.
In realizing process of the present invention, the inventor finds to exist in the prior art following problem:
User terminal is in the process that moves, will be between relaying and relaying, or relaying and DeNB (donor enhanced Node B, service enhancement mode Node B) process switches between, and do not define the DeNB handoff procedure of the Intra of LTE-A system (inside) in the existing 3GPP standard, promptly do not define between the relaying under DeNB and the DeNB, and the handover mechanism between the relaying under the DeNB and other relayings under the DeNB.
Summary of the invention
The embodiment of the invention provides a kind of relaying changing method, system and equipment, to realize the relaying handoff procedure of user terminal in moving process, the burden of saving network.
In order to achieve the above object, the embodiment of the invention has proposed a kind of relaying changing method, may further comprise the steps:
When the sub-district switching took place UE, source node sent handoff request message between destination node, carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Described destination node judges according to the information of described Target cell whether described Target cell is the sub-district of self-management;
When described Target cell was the sub-district of described destination node management, described destination node was that described Target cell is reserved corresponding resource;
Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
Preferably, described before core net transmit path switching request message, also comprise:
Described destination node determines whether that according to described handoff request message and described cell-of-origin requested resource needs are to core net initiation path switching process.
Preferably, described destination node determines whether that according to handoff request message and described cell-of-origin requested resource needs specifically comprise to core net initiation path switching process:
Described destination node judges whether to switch into the sub-district under the same eNB according to cell-of-origin information and target cell information;
When being sub-district under the same eNB when switching, described destination node judges whether the cell-of-origin requested resource can be by self whole admittance;
In the time can all being admitted by self, described destination node is determined not need to initiate the path switching process to core net;
In the time can not all being admitted by self, described destination node is determined and need be initiated the path switching process to core net.
Preferably, described UE generation sub-district switching is specially described UE in the inner generation of eNB sub-district switching.
Preferably, when eNB switched, described source node was RN to described UE from RN, and described destination node is eNB, and described destination node is determined and need also be comprised after core net is initiated the path switching process:
Described eNB is to core net transmit path switching request message, and reception is from the path switching acknowledge message of described core net, to upgrade the required resource in described cell-of-origin.
Preferably, when RN switched, described source node was eNB to described UE from eNB, and described destination node is RN, it is characterized in that, describedly specifically comprised to core net transmit path switching request message:
Described RN is to eNB transmit path switching request message;
Described eNB transmits described path switching request message according to the global unique identification of described core net to core net;
Described after core net transmit path switching request message, also comprise:
Described eNB receives the path switching acknowledge message from described core net, and described path switching acknowledge message is transmitted to described RN, to upgrade the required resource in described cell-of-origin.
Preferably, when the 2nd RN switched, described source node was a RN to described UE from a RN, and described destination node is the 2nd RN, and a described RN and described the 2nd RN belong to same eNB, describedly specifically comprised to core net transmit path switching request message:
Described the 2nd RN is to described eNB transmit path switching request message;
Described eNB transmits described path switching request message according to the global unique identification of described core net to core net;
Described after core net transmit path switching request message, also comprise:
Described eNB receives the path switching acknowledge message from described core net, and described path switching acknowledge message is transmitted to described the 2nd RN, to upgrade the required resource in described cell-of-origin.
The embodiment of the invention has proposed a kind of relaying switched system, comprising:
Source node is used for sending handoff request message between destination node when the sub-district switching takes place UE, has carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Destination node is used for when described Target cell is the sub-district of described destination node management, for described Target cell is reserved corresponding resource; Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
Preferably, described destination node also is used for judging whether to switch into the sub-district under the same eNB according to cell-of-origin information and target cell information; When judged result when being, judge whether the cell-of-origin requested resource can be by self whole admittance; And when judged result when being, determining does not need to initiate the path switching process to core net; Otherwise, determine and need initiate the path switching process to core net.
Preferably, the sub-district switching takes place and is specially described UE in the generation sub-district switching of eNB inside in described UE, and the sub-district switching of the inner generation of described eNB specifically comprises: described UE switches to eNB from RN, and described source node is RN, and described destination node is eNB; Described UE switches to RN from eNB, and described source node is eNB, and described destination node is RN; Described UE switches to the 2nd RN from a RN, and described source node is a RN, and described destination node is the 2nd RN, and a described RN and described the 2nd RN belong to same eNB.
The embodiment of the invention has proposed a kind of relaying switching device, comprising:
Receiver module is used for receiving the handoff request message from source node when the sub-district switching takes place UE, has carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Judge module, the information that is used for the Target cell that receives according to described receiver module judges whether described Target cell is the sub-district of destination node management;
Processing module is used for when described judge module is judged Target cell and is the sub-district of destination node management, is that described Target cell is reserved corresponding resource;
Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
Preferably, described processing module also is used for:
Determine whether that according to described handoff request message and described cell-of-origin requested resource needs are to core net initiation path switching process.
Preferably, described processing module also is used for:
Judge whether to switch according to cell-of-origin information and target cell information into the sub-district under the same eNB; When being sub-district under the same eNB when switching, judge whether the cell-of-origin requested resource can be by self whole admittance;
In the time can all being admitted by self, determining does not need to initiate the path switching process to core net; In the time can not all being admitted, determine and to initiate the path switching process to core net by self.
Preferably, described UE generation sub-district switching is specially described UE in the inner generation of eNB sub-district switching.
Preferably, when eNB switched, described source node was RN to described UE from RN, and described destination node is eNB, and described relaying switching device is eNB, and described processing module also is used for:
To core net transmit path switching request message, and reception is from the path switching acknowledge message of described core net, to upgrade the required resource in described cell-of-origin.
Preferably, when RN switched, described source node was eNB to described UE from eNB, and described destination node is RN, and described relaying switching device is RN, and described processing module also is used for:
To eNB transmit path switching request message, transmit described path switching request message according to the global unique identification of described core net to core net by described eNB;
And receive the path switching acknowledge message of transmitting through described eNB from described core net, to upgrade the required resource in described cell-of-origin.
Preferably, when the 2nd RN switched, a described RN and described the 2nd RN belonged to same eNB to described UE from a RN, and described relaying switching device is the 2nd RN, and described processing module also is used for:
To eNB transmit path switching request message, transmit described path switching request message according to the global unique identification of described core net to core net by described eNB;
And receive the path switching acknowledge message of transmitting through described eNB from described core net, to upgrade the required resource in described cell-of-origin.
Compared with prior art, the present invention has the following advantages: when the switching of inner eNB sub-district takes place UE, source node is initiated X2 handoff request flow process between destination node, handoff procedure is finished in EUTRAN, when the cell-of-origin requested resource can all be admitted by Target cell, do not need to notify core net after switching is finished, reduced signaling traffic load core net.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in the present invention or the description of the Prior Art below, apparently, accompanying drawing in describing below only is accompanying drawings more 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.
Fig. 1 is a kind of relaying changing method flow chart that the embodiment of the invention one proposes;
Fig. 2 is the network architecture after the introducing RN in the LTE-A system that the embodiment of the invention one proposes;
The protocol stack architecture that comprises RN that Fig. 3 proposes for the embodiment of the invention one;
Fig. 4 is relaying that the embodiment of the invention one the proposes networking situation schematic diagram when switching;
Fig. 5 is a kind of relaying changing method flow chart that the embodiment of the invention two proposes;
Fig. 6 is a kind of relaying changing method flow chart that the embodiment of the invention three proposes;
Fig. 7 is a kind of relaying changing method flow chart that the embodiment of the invention four proposes;
Fig. 8 is the structure chart of a kind of relaying switching device of the embodiment of the invention five propositions.
Embodiment
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described only is a part of the present invention, rather than whole.Based on the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other invention that is obtained under the creative work prerequisite.
In the embodiment of the invention, from other eNB angles, RN is equivalent to a sub-district under the DeNB among the LTE-A, when the switching of inner DeNB sub-district takes place in UE, between source node and destination node, initiate the X2 switching flow, handoff procedure is finished in EUTRAN, does not need to notify core net in specific scene, thereby has reduced the signaling traffic load to core net.
Further, in the embodiment of the invention, destination node need be that described Target cell is reserved corresponding resource when judging Target cell and be the sub-district of destination node management.In specific scene, do not need to notify the deterministic process of core net to be specially by judging that whether cell-of-origin information and target cell information are that switch sub-district under the same eNB; When judged result when being, judge further whether the cell-of-origin requested resource can be by self whole admittance; When judged result when being, determining does not need to initiate the path switching process to core net, thereby has reduced the signaling traffic load to core net.
A kind of relaying changing method that the embodiment of the invention one proposes as shown in Figure 1, may further comprise the steps:
When step 103, described Target cell were the sub-district of described destination node management, described destination node was that described Target cell is reserved corresponding resource;
Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
Further, described before core net transmit path switching request message, also comprise:
Described destination node determines whether that according to described handoff request message and described cell-of-origin requested resource needs are to core net initiation path switching process.
Described destination node determines whether that according to handoff request message and described cell-of-origin requested resource needs specifically comprise to core net initiation path switching process: described destination node judges whether to be that switch the sub-district under the same eNB according to cell-of-origin information and target cell information; When being sub-district under the same eNB when switching, described destination node judges whether the cell-of-origin requested resource can be by self whole admittance; In the time can all being admitted by self, described destination node is determined not need to initiate the path switching process to core net; In the time can not all being admitted by self, described destination node is determined and need be initiated the path switching process to core net.
Need to prove that described UE the sub-district switching takes place is specially described UE in the inner generation of eNB sub-district switching.
Further, described UE from RN when eNB switches, described source node is RN, described destination node is eNB, described destination node is determined need be after core net be initiated the path switching process, also comprise: described eNB is to core net transmit path switching request message, and reception is from the path switching acknowledge message of described core net, to upgrade the required resource in described cell-of-origin.
When RN switched, described source node was eNB to described UE from eNB, and described destination node is RN, describedly specifically comprised to core net transmit path switching request message: described RN is to eNB transmit path switching request message; Described eNB transmits described path switching request message according to the global unique identification of described core net to core net; Described after core net transmit path switching request message, also comprise: described eNB receives the path switching acknowledge message from described core net, and described path switching acknowledge message is transmitted to described RN, to upgrade the required resource in described cell-of-origin.
Described UE from a RN when the 2nd RN switches, described source node is a RN, described destination node is the 2nd RN, a described RN and described the 2nd RN belong to same eNB, describedly specifically comprise to core net transmit path switching request message: described the 2nd RN is to described eNB transmit path switching request message; Described eNB transmits described path switching request message according to the global unique identification of described core net to core net; Described after core net transmit path switching request message, also comprise: described eNB receives the path switching acknowledge message from described core net, and described path switching acknowledge message is transmitted to described the 2nd RN, to upgrade the required resource in described cell-of-origin.
As seen, the method that the application of the invention provides, when the switching of inner eNB sub-district takes place in UE, source node is initiated X2 handoff request flow process between destination node, handoff procedure is finished in EUTRAN, after the cell-of-origin requested resource can all be admitted by Target cell, and switching is finished, do not need to notify core net, reduced signaling traffic load core net.
A kind of relaying changing method that the embodiment of the invention two proposes, this method is applicable to is introducing RN (Relay Node, via node) in the network architecture after, a kind of RN network architecture afterwards of in the LTE-A system, introducing as shown in Figure 2, wherein, RN is linked into core net by the donor under the eNB (service) cell (sub-district); Need to prove, RN is as the via node under the eNB, can regard the sub-district under this eNB as, for this RN, this eNB is DeNB, and the interface between this DeNB and the RN is wireless Un mouth, wherein, do not have direct wave point between this RN and the core net, each RN can control one or more sub-districts, and each eNB can control and manage one or more RN.In the embodiment of the invention, need set up the X2 interface between RN and the DeNB, the X2 interface of this foundation is based on that as shown in Figure 3 the protocol stack architecture that comprises RN creates, and this protocol stack architecture is the chain of command protocol stack between RN, RN and DeNB and RN and other eNB.
In the application of reality, (need to prove, be connected by the S1 interface between core net and the eNB, connect by X2 interface between the eNB based on networking situation shown in Figure 4, be connected by the Un interface between RN and the eNB, be connected by the Uu interface between UE and the RN); Wherein, will there be seven kinds of different switch instances in UE (user terminal) when moving (for example, moving from left to right).(1) user terminal switches to another base station eNB 2 by base station eNB 1, and at this moment, source node and destination node are the base station; (2) user terminal switches to relaying RN1 or RN2 under the eNB1 by base station eNB 1, and at this moment, source node is the base station, and destination node is a relaying; (3) user terminal switches to base station eNB 1 by relaying RN1 or RN2 under the base station eNB 1, and at this moment, source node is a relaying, and destination node is the base station; (4) user terminal switches to the relaying RN2 that is under the jurisdiction of same base station by relaying RN1, and at this moment, source node and destination node are relaying; (5) user terminal switches to relaying RN3 or RN4 under another base station eNB 2 by base station eNB 1, and at this moment, source node is the base station, and destination node is a relaying; (6) user terminal switches to another base station eNB 2 by relaying RN1 or RN2 under the base station eNB 1, and at this moment, source node is a relaying, and destination node is the base station; (7) user terminal switches to relaying RN3 or RN4 under another base station eNB 2 by relaying RN1 under the base station eNB 1 or RN2, and at this moment, source node and destination node are relaying.Owing to do not define the DeNB handoff procedure of the Intra of LTE-A system in the existing 3GPP standard, it is the DeNB handoff procedure that to describe the Intra of LTE-A system in the embodiment of the invention respectively, this Intra handoff procedure (for example corresponds respectively to the 2nd kind of above-mentioned situation, eNB1 switches to RN1 or RN2), the 3rd kind of situation (for example, RN1 switches to eNB1), the 4th kind of situation (for example, RN1 switches to RN2).The embodiment of the invention will be described user terminal in detail from the processing procedure of RN when eNB switches, and as shown in Figure 5, above-mentioned relaying changing method may further comprise the steps:
Step 501, source RN gets access to HO (handover switches) decision (decision) information.Wherein, the embodiment of the invention switches to example with RN to eNB and describes, as shown in Figure 4, this source RN is that example describes with RN1, then this eNB is eNB1, because the embodiment of the invention is the DeNB handoff procedure of the Intra of LTE-A system, then this eNB1 is the service DeNB1 of this RN1.In this step, when UE need be when RN1 switches to DeNB1, then RN1 will get access to HO decision.
Step 502, RN1 sends HO request (request) message according to the measurement report of this UE to DeNB1.Wherein, knowing as RN1 need be when DeNB1 switches, and this RN1 need send HO request message to DeNB1.Need to prove, the measurement report of this UE is a defined in the existing protocol, in mobile communication system, because mobility or the other reasons of UE, communication system requires UE to switch between neighbor cell, and in order to realize the switching between neighbor cell, the signal quality of UE palpus perception may becoming sub-district of switching target before switching, and UE need report network equipment in the mode of measurement report (MEASURENET REPORT) with the result of coincidence measurement standard, make the decision-making of switching for system, do not repeat them here.
Step 503, DeNB1 resolves the Target cell ID in this HO request message, and returns HO request ACK (affirmation) information to RN1.
Wherein, the information of having carried Target cell ID in this HO request message, this DeNB1 is by obtaining the information of this Target cell ID, thereby know whether this Target cell is the sub-district of self-management, when this Target cell is the sub-district of self-management, for this Target cell is done corresponding resource reservation; When this Target cell was not the sub-district of this DeNB1 management, this situation was not described in detail.
Need to prove, when Target cell is the sub-district of DeNB1 management, this DeNB 1 need reserve corresponding resource for this Target cell, for example, when Target cell needs the resource of 10M, this DeNB1 need reserve the resource that is not less than 10M for this Target cell, so that the transmission of carrying out data that the UE under the Target cell can be correct.
In this step, this HO request ACK information is used for confirming to have received HO request message from this RN1 to RN1.
Step 504, RN1 sends RRC (Radio Resource Control, Radio Resource control) Reconfiguration (reconfiguring) message to UE.Wherein, RRC is used to handle the 3rd layer of information of control plane between UE and the network equipment, comprises that RRC connects, RRC reconfigures, RRC keeps and processes such as RRC release.
In this step, since before UE set up RRC with this RN1 and be connected, and UE need switch to DeNB1 in the embodiment of the invention, be that UE needs to rebulid RRC with DeNB1 and is connected, at this moment, RN1 is by sending RRC Reconfiguration message to UE, set up RRC with DeNB 1 and be connected thereby trigger this UE.
Step 505, UE sends RRC Reconfiguration (reconfiguring) Complete (finishing) message to DeNB 1, promptly UE is linked into DeNB1, set up with DeNB1 between RRC be connected.
Step 506, DeNB1 judges whether and need send Path (path) Switch (switching) Request message to MME (Mobile Management Entity, mobile management entity).Wherein, this MME is the network element in the core net.
In the embodiment of the invention, this DeNB1 need judge whether to switch into the sub-district under the same DeNB according to cell-of-origin ID that carries in the HO request message and Target cell ID, when cell-of-origin ID and Target cell ID belong to same DeNB, be that switch the sub-district under the same DeNB promptly; When cell-of-origin ID and Target cell ID do not belong to same DeNB, be that switch the sub-district under the different DeNB, this situation no longer encyclopaedizes.
Need to prove, in above-mentioned steps 503, got access to the DeNB under the Target cell, in this step, this DeNB1 can get access to the DeNB under the cell-of-origin according to the cell-of-origin ID in the RRC context that carries in the HO request message, thereby whether the DeNB that judges under the Target cell is identical with DeNB under the cell-of-origin.
Further, when being sub-district under the same DeNB when switching, DeNB1 will judge whether and need send Path Switch Request message to MME that this deterministic process specifically comprises:
DeNB1 judges whether the cell-of-origin requested resource can all be admitted by DeNB1;
When the cell-of-origin requested resource can all be admitted by DeNB1, DeNB1 did not need to send Path Switch Request message to MME, does not promptly need to initiate the routing update process to core net;
Otherwise DeNB1 need send Path Switch Request message to MME, promptly needs to initiate the routing update process to core net.
Specify the above-mentioned situations of judging that whether the cell-of-origin requested resource can all be admitted by DeNB1 with a concrete example below, for example, cell-of-origin (UE is by these cell-of-origin transmission data) requested resource is a resource 1, resource 2 and resource 3 (be MME real-time pass through DeNB1 sends data from resource 1 to this cell-of-origin, the data of the data of resource 2 and resource 3), but in the application of reality, if DeNB1 is only when the cell-of-origin sends the data of the data of resource 1 and resource 2, show that then the cell-of-origin requested resource can not all be admitted by DeNB1, and this moment, MME was the data that send resource 1, the data of the data of resource 2 and resource 3, promptly the data of resource 3 are wasted.In the embodiment of the invention, DeNB1 makes MME send the data of resource 1 and the data of resource 2 by DeNB1 to the cell-of-origin by send Path Switch Request message to MME, thereby has saved the resource of system.Corresponding, if in the actual application, when DeNB1 sends the data of the data of data, resource 2 of resource 1 and resource 3 to the cell-of-origin, show that then the cell-of-origin requested resource can all be admitted by DeNB1, do not need this moment to send Path Switch Request message, do not repeat them here to MME.
Further, if DeNB1 need be when MME sends Path Switch Request message, this step also comprises:
Step 506a, DeNB1 sends Path Switch Request message to MME.
Step 506b, MME returns Path Switch Ack message to DeNB1, to upgrade the required resource in cell-of-origin.Wherein, described this renewal process in the above in the step 506 in detail, for example, after upgrading, MME only need send the data of resource 1 and the data of resource 2 (MME need send the data of resource 1, the data of resource 2 and the data of resource 3 to the cell-of-origin before upgrading) to the cell-of-origin, thereby has saved the resource of system.
Step 507, when UE was linked into this DeNB1, this DeNB1 sent UE context (context) release (release) message to RN1, was connected with the RRC of this UE thereby trigger this RN1 releasing.
Wherein, the inventive method can be adjusted each sequence of steps according to actual needs.
In embodiments of the present invention, by the handling process between the above-mentioned steps 501-step 507, can realize that promptly user terminal is switched to the relaying handoff procedure of this base station eNB by the relaying RN under the base station eNB, and switch the sub-district of above-mentioned relaying handoff procedure to be UE occur in Intra eNB, this handoff procedure is at EUTRAN (Evolved Universal Terrestrial Radio Access Network, the UMTS wireless access network of evolution) finishes in, when the cell-of-origin requested resource can all be admitted by DeNB, do not need to notify core net after switching is finished, reduced signaling traffic load core net.
Based on the above embodiments two, a kind of relaying changing method that the embodiment of the invention three proposes, this method is at the 2nd kind of above-mentioned situation, be that the embodiment of the invention will be described user terminal in detail from the processing procedure of eNB when RN switches, as shown in Figure 6, above-mentioned relaying changing method may further comprise the steps:
Wherein, the information of having carried Target cell ID in this HO request message, this RN1 is by obtaining the information of this Target cell ID, thereby knows whether this Target cell is the sub-district of self-management, when this Target cell is the sub-district of self-management, for this Target cell is done corresponding resource reservation; When this Target cell was not the sub-district of this RN1 management, this situation was not described in detail.Need to prove that when Target cell was the sub-district of RN1 management, this RN1 need reserve corresponding resource for this Target cell.
Step 604, DeNB1 sends RRC Reconfiguration message to UE, sets up RRC with RN1 and is connected thereby trigger this UE.
Step 606, RN1 judges whether and need send Path Switch Request message to MME.Wherein, this RN1 judges whether to switch into the sub-district under the same DeNB according to cell-of-origin ID that carries in the HO request message and Target cell ID, when being that sub-district under the same DeNB is when switching, RN1 will judge whether and need send Path Switch Request message to MME this deterministic process specifically comprises: RN1 judges whether DeNB 1 (or cell-of-origin) requested resource can all be admitted by RN1; When the DeNB1 requested resource can all be admitted by RN1, RN1 did not need to send Path SwitchRequest message to MME, does not promptly need to initiate the routing update process to core net; Otherwise RN1 need send Path Switch Request message to MME by DeNB1, promptly needs to initiate the routing update process to core net.
Further, if RN1 need be by DeNB1 when MME sends Path Switch Request message, this step also comprises:
Need to prove, by the method for in Path Switch Request message, carrying the address information of MME be equally applicable between eNB handoff procedure, switch to the handoff scenario of RN sub-district under the DeNB from other nodes (for example RN under other eNB or other eNB), do not repeat them here.Wherein, this path switch request message that has increased GUMMI information is as shown in table 1:
Table 1
What need further specify is, when RN1 sends Path Switch Reuest message to DeNB1, can also in this Path Switch Request message, carry the global unique identification of this MME address, carry out the addressing operation of MME according to this global unique identification, not repeat them here by DeNB1.
Wherein, the inventive method can be adjusted each sequence of steps according to actual needs.
In embodiments of the present invention, by the handling process between the above-mentioned steps 601-step 607, can realize that promptly user terminal is switched to the relaying handoff procedure of the relaying RN under this base station eNB by base station eNB, and switch the sub-district of above-mentioned relaying handoff procedure to be UE occur in Intra eNB, this handoff procedure is finished in EUTRAN, when the cell-of-origin requested resource can all be admitted by DeNB, after finishing, switching do not need to notify core net, reduced signaling traffic load to core net.
Based on the above embodiments two, a kind of relaying changing method that the embodiment of the invention four proposes, this method is at the 4th kind of above-mentioned situation, be that the embodiment of the invention will be described user terminal in detail from the processing procedure of RN when another RN switches, this RN and this another RN belong to same eNB, is that example describes with RN1 to RN2, and RN1 and RN2 belong to same DeNB1.As shown in Figure 7, above-mentioned relaying changing method may further comprise the steps:
Step 703, DeNB1 resolves the Target cell ID in this HO request message, and sends HO request message to RN2.
Wherein, the information of having carried Target cell ID in this HO request message, this DeNB1 is by obtaining the information of this Target cell ID, thereby know whether this Target cell is the sub-district of self-management, when this Target cell is the sub-district of self-management, this HO request message is sent to corresponding RN, wherein, switching to example with RN1 to RN2 in the embodiment of the invention describes, promptly this Target cell is the sub-district under the RN2 under the DeNB1, this DeNB1 transmits this HO request message at the Un of correspondence mouth to RN2 according to the ID of this Target cell and the corresponding relation of Un.
Step 704, RN2 resolves the Target cell ID in this HO request message, and returns HO requestACK information to DeNB1.
Wherein, this RN2 is by obtaining the information of this Target cell ID, thereby knows whether this Target cell is the sub-district of self-management, when this Target cell is the sub-district of self-management, for this Target cell is done corresponding resource reservation.This is done corresponding resource reservation process and describes in detail in the step 503 in the above, does not repeat them here.
Step 706, RN1 sends RRC Reconfiguration message to UE, triggers this UE and sets up RRC with RN2 and be connected.
Step 707, UE sends RRC Reconfiguration Complete message to RN2, promptly UE is linked into RN2, set up with RN2 between RRC be connected.
Further, if RN2 need be by DeNB1 when MME sends Path Switch Request message, this step also comprises:
Step 708a, RN2 sends Path Switch Request message to DeNB1, wherein, needs to carry GUMMI information in this PathSwitch Request message, make this DeNB1 to carry out the MME addressing, i.e. address information of having carried MME in this GUMMI information according to this GUMMI information.Need to prove, by the method for in Path Switch Request message, carrying the address information of MME be equally applicable between eNB handoff procedure, switch to the handoff scenario of RN sub-district under the DeNB from other nodes (for example RN under other eNB or other eNB), this has increased above-mentioned as shown in table 1 of the pathswitch request message of GUMMI information, does not repeat them here.
What need further specify is, when RN1 sends Path Switch Request message to DeNB1, can also in this Path Switch Request message, carry the global unique identification of this MME address, carry out the addressing operation of MME according to this global unique identification, not repeat them here by DeNB1.
Step 708b, DeNB1 sends Path Switch Request message to MME, and wherein, this DeNB1 is according to being somebody's turn to do from the GUMMI information in the Path Switch Request message of RN2, know the address of this MME, and send Path Switch Request message to MME according to this address.
Step 708c, MME returns Path Switch Ack message to DeNB1.
Step 708d, DeNB1 returns Path Switch Ack message to RN2.
Step 709, when UE was linked into this RN2, this RN2 sent UE contextrelease message to DeNB 1.
Step 710, DeNB1 transmits UE context release message to RN1.Wherein, DeNB1 changes UE Context Release message according to the cell-of-origin id information that carries in this UE Context Release message at the Un of correspondence mouth before RN1.
Wherein, the inventive method can be adjusted each sequence of steps according to actual needs.
In embodiments of the present invention, by the handling process between the above-mentioned steps 701-step 710, can realize that promptly user terminal is switched to the relaying handoff procedure of another relaying RN under this base station eNB by the relaying RN under the base station eNB, and switch the sub-district of above-mentioned relaying handoff procedure to be UE occur in Intra eNB, this handoff procedure is finished in EUTRAN, when the cell-of-origin requested resource can all be admitted by DeNB, do not need to notify core net after switching is finished, reduced signaling traffic load core net.
The embodiment of the invention has also proposed a kind of relaying switched system, comprises source node and destination node, wherein:
Source node is used for sending handoff request message between destination node when the sub-district switching takes place UE, has carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Destination node is used for when described Target cell is the sub-district of described destination node management, for described Target cell is reserved corresponding resource; Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
Further, described destination node also is used for judging whether to switch into the sub-district under the same eNB according to cell-of-origin information and target cell information; When judged result when being, judge whether the cell-of-origin requested resource can be by self whole admittance; And when judged result when being, determining does not need to initiate the path switching process to core net; Otherwise, determine and need initiate the path switching process to core net.
Need to prove that described UE the sub-district switching takes place is specially described UE in the generation sub-district switching of eNB inside, the sub-district switching of the inner generation of described eNB specifically comprises: described UE switches to eNB from RN, and described source node is RN, and described destination node is eNB; Described UE switches to RN from eNB, and described source node is eNB, and described destination node is RN; Described UE switches to the 2nd RN from a RN, and described source node is a RN, and described destination node is the 2nd RN, and a described RN and described the 2nd RN belong to same eNB.
A kind of relaying switching device that the embodiment of the invention five also proposes, this equipment is eNB, as shown in Figure 8, comprising:
Receiver module 81 is used for receiving the handoff request message from source node when the sub-district switching takes place UE, has carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Judge module 82, the information that is used for the Target cell that receives according to described receiver module 81 judges whether described Target cell is the sub-district of destination node management;
Processing module 83 is used for when described judge module 82 is judged Target cell and is the sub-district of destination node management, is that described Target cell is reserved corresponding resource;
Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
Wherein, described processing module 83 also is used for: determine whether that according to described handoff request message and described cell-of-origin requested resource needs are to core net initiation path switching process.
Further, described processing module 83 also is used for: judge whether to switch into the sub-district under the same eNB according to cell-of-origin information and target cell information; When being sub-district under the same eNB when switching, judge whether the cell-of-origin requested resource can be by self whole admittance; In the time can all being admitted by self, determining does not need to initiate the path switching process to core net; In the time can not all being admitted, determine and to initiate the path switching process to core net by self.
Need to prove that described UE the sub-district switching takes place is specially described UE in the inner generation of eNB sub-district switching.
Wherein, described UE from RN when eNB switches, described source node is RN, described destination node is eNB, described relaying switching device is eNB, described processing module 83 also is used for: to core net transmit path switching request message, and reception is from the path switching acknowledge message of described core net, to upgrade the required resource in described cell-of-origin.
Wherein, described UE from eNB when RN switches, described source node is eNB, described destination node is RN, described relaying switching device is RN, described processing module 83 also is used for: to eNB transmit path switching request message, transmit described path switching request message according to the global unique identification of described core net to core net by described eNB; And receive the path switching acknowledge message of transmitting through described eNB from described core net, to upgrade the required resource in described cell-of-origin.
Wherein, described UE from a RN when the 2nd RN switches, a described RN and described the 2nd RN belong to same eNB, described relaying switching device is the 2nd RN, described processing module 83 also is used for: to eNB transmit path switching request message, transmit described path switching request message according to the global unique identification of described core net to core net by described eNB; And receive the path switching acknowledge message of transmitting through described eNB from described core net, to upgrade the required resource in described cell-of-origin.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be personal computer, server, perhaps network equipment etc.) is carried out method of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (17)
1. a relaying changing method is characterized in that, may further comprise the steps:
When the sub-district switching took place UE, source node sent handoff request message between destination node, carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Described destination node judges according to the information of described Target cell whether described Target cell is the sub-district of self-management;
When described Target cell was the sub-district of described destination node management, described destination node was that described Target cell is reserved corresponding resource;
Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
2. the method for claim 1 is characterized in that, and is described before core net transmit path switching request message, also comprises:
Described destination node determines whether that according to described handoff request message and described cell-of-origin requested resource needs are to core net initiation path switching process.
3. method as claimed in claim 2 is characterized in that, described destination node determines whether that according to handoff request message and described cell-of-origin requested resource needs specifically comprise to core net initiation path switching process:
Described destination node judges whether to switch into the sub-district under the same eNB according to cell-of-origin information and target cell information;
When being sub-district under the same eNB when switching, described destination node judges whether the cell-of-origin requested resource can be by self whole admittance;
In the time can all being admitted by self, described destination node is determined not need to initiate the path switching process to core net;
In the time can not all being admitted by self, described destination node is determined and need be initiated the path switching process to core net.
4. as each described method of claim 1-3, it is characterized in that described UE the sub-district switching takes place is specially described UE in the inner generation of eNB sub-district switching.
5. method as claimed in claim 4, when eNB switched, described source node was RN to described UE from RN, and described destination node is eNB, it is characterized in that, and described destination node is determined and need also be comprised after core net is initiated the path switching process:
Described eNB is to core net transmit path switching request message, and reception is from the path switching acknowledge message of described core net, to upgrade the required resource in described cell-of-origin.
6. method as claimed in claim 4, when RN switched, described source node was eNB to described UE from eNB, described destination node is RN, it is characterized in that, describedly specifically comprises to core net transmit path switching request message:
Described RN is to eNB transmit path switching request message;
Described eNB transmits described path switching request message according to the global unique identification of described core net to core net;
Described after core net transmit path switching request message, also comprise:
Described eNB receives the path switching acknowledge message from described core net, and described path switching acknowledge message is transmitted to described RN, to upgrade the required resource in described cell-of-origin.
7. method as claimed in claim 4, described UE from a RN when the 2nd RN switches, described source node is a RN, described destination node is the 2nd RN, a described RN and described the 2nd RN belong to same eNB, it is characterized in that, describedly specifically comprise to core net transmit path switching request message:
Described the 2nd RN is to described eNB transmit path switching request message;
Described eNB transmits described path switching request message according to the global unique identification of described core net to core net;
Described after core net transmit path switching request message, also comprise:
Described eNB receives the path switching acknowledge message from described core net, and described path switching acknowledge message is transmitted to described the 2nd RN, to upgrade the required resource in described cell-of-origin.
8. a relaying switched system is characterized in that, comprising:
Source node is used for sending handoff request message between destination node when the sub-district switching takes place UE, has carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Destination node is used for when described Target cell is the sub-district of described destination node management, for described Target cell is reserved corresponding resource; Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
9. system as claimed in claim 8 is characterized in that, described destination node also is used for judging whether to switch into the sub-district under the same eNB according to cell-of-origin information and target cell information; When judged result when being, judge whether the cell-of-origin requested resource can be by self whole admittance; And when judged result when being, determining does not need to initiate the path switching process to core net; Otherwise, determine and need initiate the path switching process to core net.
10. system as claimed in claim 8 or 9, it is characterized in that, the sub-district switching takes place and is specially described UE in the inner generation of eNB sub-district switching in described UE, the inner sub-district switching that takes place of described eNB specifically comprises: described UE switches to eNB from RN, described source node is RN, and described destination node is eNB; Described UE switches to RN from eNB, and described source node is eNB, and described destination node is RN; Described UE switches to the 2nd RN from a RN, and described source node is a RN, and described destination node is the 2nd RN, and a described RN and described the 2nd RN belong to same eNB.
11. a relaying switching device is characterized in that, comprising:
Receiver module is used for receiving the handoff request message from source node when the sub-district switching takes place UE, has carried the information of cell-of-origin and the information of Target cell in the described handoff request message;
Judge module, the information that is used for the Target cell that receives according to described receiver module judges whether described Target cell is the sub-district of destination node management;
Processing module is used for when described judge module is judged Target cell and is the sub-district of destination node management, is that described Target cell is reserved corresponding resource;
Be RN and need when core net is initiated the path switching process,, carry the global unique identification of described core net in the described path switching request message at described destination node to described core net transmit path switching request message; Or described destination node is not initiated the path switching process to described core net.
12. equipment as claimed in claim 11 is characterized in that, described processing module also is used for:
Determine whether that according to described handoff request message and described cell-of-origin requested resource needs are to core net initiation path switching process.
13. equipment as claimed in claim 12 is characterized in that, described processing module also is used for:
Judge whether to switch according to cell-of-origin information and target cell information into the sub-district under the same eNB; When being sub-district under the same eNB when switching, judge whether the cell-of-origin requested resource can be by self whole admittance;
In the time can all being admitted by self, determining does not need to initiate the path switching process to core net; In the time can not all being admitted, determine and to initiate the path switching process to core net by self.
14., it is characterized in that described UE the sub-district switching takes place is specially described UE in the inner generation of eNB sub-district switching as each described equipment of claim 11-13.
15. when eNB switched, described source node was RN from RN for equipment as claimed in claim 14, described UE, described destination node is eNB, and described relaying switching device is eNB, it is characterized in that, described processing module also is used for:
To core net transmit path switching request message, and reception is from the path switching acknowledge message of described core net, to upgrade the required resource in described cell-of-origin.
16. when RN switched, described source node was eNB from eNB for equipment as claimed in claim 14, described UE, described destination node is RN, and described relaying switching device is RN, it is characterized in that, described processing module also is used for:
To eNB transmit path switching request message, transmit described path switching request message according to the global unique identification of described core net to core net by described eNB;
And receive the path switching acknowledge message of transmitting through described eNB from described core net, to upgrade the required resource in described cell-of-origin.
17. when the 2nd RN switched, a described RN and described the 2nd RN belonged to same eNB from a RN for equipment as claimed in claim 14, described UE, described relaying switching device is the 2nd RN, it is characterized in that, described processing module also is used for:
To eNB transmit path switching request message, transmit described path switching request message according to the global unique identification of described core net to core net by described eNB;
And receive the path switching acknowledge message of transmitting through described eNB from described core net, to upgrade the required resource in described cell-of-origin.
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| PCT/CN2010/075211 WO2011006445A1 (en) | 2009-07-16 | 2010-07-16 | Method, system and device for switching relay |
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| CN101959265B (en) | 2013-01-16 |
| WO2011006445A1 (en) | 2011-01-20 |
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