CN104301954A - Switching method, device, base stations and system - Google Patents
Switching method, device, base stations and system Download PDFInfo
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- CN104301954A CN104301954A CN201310300609.6A CN201310300609A CN104301954A CN 104301954 A CN104301954 A CN 104301954A CN 201310300609 A CN201310300609 A CN 201310300609A CN 104301954 A CN104301954 A CN 104301954A
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- base station
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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
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
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Abstract
The invention discloses a switching method, a device, base stations and a system. The method comprises the following steps that: a first base station initiates switching to a second base station through a PDS (Push-to-talk Dispatch Server) and/or an MME (Mobile Management Element) when user equipment (UE) uses an LTE (Long Term Evolution) service and a push-to-talk service simultaneously; and the first base station instructs the UE to switch to the second base station according to resources allocated to the UE by the second base station. Through adoption of the switching method, the device, the base stations and the system, the problem of influence on user experience since seamless switching of the LTE service and the push-to-talk service used by the UE cannot be performed among cells is solved.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of changing method, device, base station and system.
Background technology
Based on Long Term Evolution (LTE, Long Term Evolution) broadband cluster system of technology, wherein a kind of framework of implementation is, enode b (Evolved Node B) is connected to LTE evolution block core net (EPC respectively, Evolved Packet Core) and cluster service subsystem (DSS, Dispatch SubSystem), wherein EPC comprises mobile management entity (MME, Mobile Management Element), gateway (S-GW, Serving Gateway), packet data gateway (P-GW, Packet Data Gateway), home subscriber server (HSS, Home Subscriber Service) etc. network element, DSS comprises trunking dispatch server (PDS, Push-to-talk Dispatch Server), dispatching desk proxy server (DAS, Dispatch Agent Server), cluster home location register (Push-to-talk Home Register), Deng network element.
In the broadband cluster system of above-mentioned framework, there is subscriber equipment (UE, User Equipment) use the scene of LTE business and group service simultaneously, particularly, comprise LTE business and cluster listen state and the scene of depositing, LTE business and cluster say state and the scene of depositing.
In correlation technique, UE is when minizone is moved, and the LTE business that cannot use user and group service carry out seamless switching in minizone, have impact on Consumer's Experience.
Summary of the invention
Carry out the problem of seamless switching for the LTE business that cannot use UE in correlation technique and group service in minizone, the invention provides a kind of changing method, device, base station and system, at least to solve the problem.
The invention provides a kind of changing method, the method comprises:
When first base station determines that user equipment (UE) uses LTE business and group service simultaneously, initiate to switch to the second base station by PDS and/or MME;
Described first base station is the resource that described UE distributes according to described second base station, indicates described UE to be switched to described second base station.
Preferably, described first base station initiates to switch to the second base station by PDS and MME, comprising:
Described first base station sends the handover request of corresponding group service to described second base station by described PDS, and sent the handover request of corresponding LTE business to described second base station by described MME;
Correspondingly, the method also comprises:
Described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service by described PDS to described first base station, and sent the information of the resource of corresponding LTE business by described MME to described first base station.
Preferably, when described first base station initiates to switch to the second base station by PDS and MME, described first base station is the resource that described UE distributes according to described second base station, indicates described UE to be switched to described second base station, comprising:
Extract mobility control information and wireless resource configuration the information of the resource that the information of the resource that described first base station sends from described PDS respectively and described MME send, be carried on radio resource control RRC after the information extracted being merged and connect in reconfiguration message and send to described UE.
Preferably, described first base station initiates to switch to the second base station by PDS or MME, comprising:
Described first base station sends the handover request of corresponding group service to described second base station by described PDS, and the handover request of corresponding LTE business; Or,
Described first base station sends the handover request of corresponding group service and the handover request of corresponding LTE business by described MME to described second base station;
Correspondingly, the method also comprises:
Described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, and is sent the information of the resource of corresponding group service to described first base station by described PDS or described MME, and the information of the resource of corresponding LTE business.
Preferably, described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, comprising:
The handover request of the corresponding group service received and the corresponding same UE of handover request of corresponding LTE business are determined in described second base station, for the Signaling Radio Bearer (SRB that group service and the LTE traffic assignments of described UE share, Signaling Radio Bearer) and access channel resource, and be Data Radio Bearer (DRB, Data Radio Bearer) corresponding to the group service of described UE and LTE traffic assignments.
Preferably, when described first base station initiates to switch to described second base station by described PDS and described MME, the method also comprises:
Described first base station is by the PDCP (PDCP of corresponding group service, Packet Data Convergence Protocol) sequence number (SN, Serial Number) information sends to described second base station by described PDS, the PDCP SN information of corresponding LTE business is sent to described second base station by described MME, and initiates the data inverse-transmitting of corresponding group service and LTE business to described second base station;
When described first base station initiates to switch to described second base station by described PDS or described MME, the method also comprises:
The PDCP SN information correspondence of the PDCP SN information of corresponding group service and corresponding LTE business is sent to described second base station by described PDS or described MME by described first base station, and initiates the data inverse-transmitting of corresponding group service and LTE business to described second base station.
Preferably, when described first base station initiates to switch to the second base station by described PDS, the method also comprises:
Described second base station indicates described MME that the carrying of corresponding LTE business is switched to described second base station from described first base station;
When described first base station initiates to switch to the second base station by described MME, the method also comprises:
Described second base station indicates described PDS that the carrying of corresponding group service is switched to described second base station from described first base station.
Present invention also offers a kind of switching device shifter, this device comprises: the first determining unit, switch unit and indicating member; Wherein,
Described first determining unit, during for determining that user equipment (UE) uses LTE business and group service simultaneously, triggers described switch unit;
Described switch unit, for initiating to switch to target BS by PDS and/or MME;
Described indicating member, for being the resource that described UE distributes according to described second base station, indicates described UE to be switched to described target BS.
Preferably, described switch unit, also for being sent the handover request of corresponding group service to described target BS by described PDS, and sends the handover request of corresponding LTE business by described MME to described target BS;
Described indicating member, be also the information that described UE distributes the resource of corresponding group service for being received described target BS by described PDS, receiving described target BS by described MME is the information that described UE distributes the resource of corresponding LTE business.
Preferably, described indicating member, when also initiating to switch to target BS by PDS and MME for described switch unit, extract mobility control information and wireless resource configuration the information of the resource that the information of the resource sent from described PDS respectively and described MME send, be carried on RRC after the information extracted being merged and connect in reconfiguration message and send to described UE.
Preferably, described switch unit, also for being sent the handover request of corresponding group service to described target BS by described PDS, and the handover request of corresponding LTE business; Or,
The handover request of corresponding group service and the handover request of corresponding LTE business is sent to described target BS by described MME.
Preferably, this device also comprises anti-pass unit; Wherein,
Described switch unit, time also for initiating to switch to described second base station by described PDS and described MME, the PDCP SN information of corresponding group service is sent to described target BS by described PDS, the PDCP SN information of corresponding LTE business is sent to described target BS by described MME, and triggers described anti-pass unit; When initiating to switch to described second base station by described PDS or described MME, the PDCP SN information correspondence of the PDCP SN information of corresponding group service and corresponding LTE business is sent to described target BS by described PDS or described MME, and triggers described anti-pass unit;
Described anti-pass unit, for initiating the data inverse-transmitting of corresponding group service and LTE business to described target BS.
Preferably, described switch unit, time also for initiating to switch to described target BS by described PDS, indicates described MME that the carrying of corresponding LTE business is switched to described target BS; When initiating to switch to described target BS by described MME, indicate described PDS that the carrying of corresponding group service is switched to described target BS.
Present invention also offers a kind of switching device shifter, this device comprises: receiving element and allocation units; Wherein,
Described receiving element, for receiving the handover request of corresponding group service, being received the handover request of corresponding LTE business by MME by PDS;
Described allocation units, for the handover request received according to described receiving element, distribute the resource of corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service by described PDS to source base station, and sent the information of the resource of corresponding LTE business by described MME to described source base station.
Preferably, described receiving element, also for being received the handover request of corresponding group service and the handover request of corresponding LTE business by described PDS or described MME;
Described allocation units, handover request also for receiving according to described receiving element, distribute the resource of corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service to source base station by described PDS or described MME, and the information of the resource of corresponding LTE business.
Preferably, this device also comprises:
Second determining unit, during for determining the handover request of the handover request of the corresponding group service that described receiving element receives and corresponding LTE business corresponding same UE, triggers described allocation units;
Described allocation units for the SRB that shares for the group service of described UE and LTE traffic assignments and access channel resource, and are DRB corresponding to the group service of described UE and LTE traffic assignments.
Present invention also offers a kind of base station, this base station comprises switching device shifter as above.
Present invention also offers a kind of switched system, this system comprises: the first base station, the second base station, PDS, MME and UE; Wherein,
Described first base station, during for determining that user equipment (UE) uses LTE business and group service simultaneously, initiates to switch to described second base station by PDS and/or MME; According to the resource that described second base station is described UE distribution, described UE is indicated to be switched to described second base station;
Described second base station, for being described UE Resources allocation.
In the present invention, when initiating to switch by PDS and/or MME, be the resource of described UE distribution according to described second base station by the first base station, indicate described UE to be switched to described second base station, avoid UE and use concurrent service cannot realize the problem of seamless switching;
When initiating to switch by PDS and MME, merged by the information of the second base station to the resource received and be sent to UE; When initiating to switch by PDS or MME, by PDS or MME, the information of the resource of the second base station assigns is sent to UE; So, can make UE run simultaneously business base station between switching, improve handover success rate.
Accompanying drawing explanation
Fig. 1 is the realization flow schematic diagram of the changing method of the embodiment of the present invention;
Fig. 2 a is the composition structural representation one of the switching device shifter of the embodiment of the present invention;
Fig. 2 b is the composition structural representation two of the switching device shifter of the embodiment of the present invention;
Fig. 3 is the composition structural representation of the switched system of the embodiment of the present invention;
Fig. 4 is the realization flow schematic diagram one that the base station of the embodiment of the present invention switches;
Fig. 5 is the realization flow schematic diagram two that the base station of the embodiment of the present invention switches;
Fig. 6 is the realization flow schematic diagram three that the base station of the embodiment of the present invention switches.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further details.
The embodiment of the present invention describes a kind of changing method, as shown in Figure 1, comprises the following steps:
Step 101: when the first base station determines that UE uses LTE business and group service simultaneously, initiates to switch to the second base station by PDS and/or MME;
Described first base station initiates to switch to the second base station by PDS and MME, comprising:
Described first base station sends the handover request of corresponding group service to described second base station by described PDS, and sent the handover request of corresponding LTE business to described second base station by described MME;
Correspondingly,
Described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service to described first base station by described PDS, and by the information of described MME to the resource of the corresponding LTE business in described second base station.
Described first base station initiates to switch to the second base station by PDS or MME, comprising:
Described first base station sends the handover request of corresponding group service to described second base station by described PDS, and the handover request of corresponding LTE business; Or,
Described first base station sends the handover request of corresponding group service and the handover request of corresponding LTE business by described MME to described second base station;
Correspondingly,
Described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, and is sent the information of the resource of corresponding group service to described first base station by described PDS or described MME, and the information of the resource of corresponding LTE business.
When the handover request of the handover request of corresponding group service and corresponding LTE business is determined from same UE in described second base station, corresponding send switching command (Handover Command) by described PDS or described MME to described first base station, described switching command carries the resource information of corresponding group service into UE distributes and the resource information of corresponding LTE business.
Described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, comprising:
The handover request of the corresponding group service received and the corresponding same UE of handover request of corresponding LTE business are determined in described second base station, the SRB shared for the group service of this UE and LTE traffic assignments and access channel resource, and be DRB corresponding to the group service of this UE and LTE traffic assignments.
When described first base station initiates to switch to described second base station by described PDS and described MME, the method also comprises:
The PDCP SN information of corresponding group service is sent to described second base station by described PDS by described first base station, the PDCP SN information of corresponding LTE business is sent to described second base station by described MME, and initiates the data inverse-transmitting of corresponding group service and LTE business;
When described first base station initiates to switch to described second base station by described PDS or described MME, the method also comprises:
The PDCP SN information correspondence of the PDCP SN information of corresponding group service and corresponding LTE business is sent to described second base station by described PDS or described MME by described first base station, and initiates the data inverse-transmitting of corresponding group service and LTE business.
When described first base station initiates to switch to the second base station by described PDS, the method also comprises:
Described second base station indicates described MME that the carrying of corresponding LTE business is switched to described second base station from described first base station;
When described first base station initiates to switch to the second base station by described MME, the method also comprises:
Described second base station indicates described PDS that the carrying of corresponding group service is switched to described second base station from described first base station.
Step 102: described first base station is the resource that described UE distributes according to described second base station, indicates described UE to be switched to described second base station.
Described first base station is the resource that described UE distributes according to described second base station, indicates described UE to be switched to described second base station, comprising:
Extract mobility control information and wireless resource configuration the information of the resource that the information of the resource that described first base station sends from described PDS respectively and described MME send, be carried on radio resource control RRC after the information extracted being merged and connect in reconfiguration message and send to described UE.
In practical application, described first base station can be source base station, and described second base station can be target BS.
Fig. 2 a is the composition structural representation one of the switching device shifter of the embodiment of the present invention, as shown in Figure 2 a, comprising: the first determining unit 10, switch unit 20 and indicating member 30; Wherein,
Described first determining unit 10, during for determining that user equipment (UE) uses LTE business and group service simultaneously, triggers described switch unit 20;
Described switch unit 20, for initiating to switch to target BS by PDS and/or MME;
Described indicating member 30, for being the resource that described UE distributes according to described second base station, indicates described UE to be switched to described target BS.
Preferably, described switch unit 20, also for being sent the handover request of corresponding group service to described target BS by described PDS, and sends the handover request of corresponding LTE business by described MME to described target BS;
Described indicating member 30, be also the information that described UE distributes the resource of corresponding group service for being received described target BS by described PDS, receiving described target BS by described MME is the information that described UE distributes the resource of corresponding LTE business.
Preferably, described indicating member 30, when also initiating to switch to target BS by PDS and MME for described switch unit 20, extract mobility control information and wireless resource configuration the information of the resource that the information of the resource sent from described PDS respectively and described MME send, be carried on RRC after the information extracted being merged and connect in reconfiguration message and send to described UE.
Preferably, described switch unit 20, also for being sent the handover request of corresponding group service to described target BS by described PDS, and the handover request of corresponding LTE business; Or,
The handover request of corresponding group service and the handover request of corresponding LTE business is sent to described target BS by described MME.
Preferably, this device also comprises anti-pass unit; Wherein,
Described switch unit 20, time also for initiating to switch to described second base station by described PDS and described MME, the PDCP SN information of corresponding group service is sent to described target BS by described PDS, the PDCP SN information of corresponding LTE business is sent to described target BS by described MME, and triggers described anti-pass unit; When initiating to switch to described second base station by described PDS or described MME, the PDCP SN information correspondence of the PDCP SN information of corresponding group service and corresponding LTE business is sent to described target BS by described PDS or described MME, and triggers described anti-pass unit;
Described anti-pass unit, for initiating the data inverse-transmitting of corresponding group service and LTE business to described target BS.
Preferably, described switch unit 20, time also for initiating to switch to described target BS by described PDS, indicates described MME that the carrying of corresponding LTE business is switched to described target BS; When initiating to switch to described target BS by described MME, indicate described PDS that the carrying of corresponding group service is switched to described target BS.
Fig. 2 b is the composition structural representation two of the switching device shifter of the embodiment of the present invention, as shown in Figure 2 b, comprising: receiving element 50 and allocation units 60; Wherein,
Described receiving element 50, for receiving the handover request of corresponding group service, being received the handover request of corresponding LTE business by MME by PDS;
Described allocation units 60, for the handover request received according to described receiving element 50, distribute the resource of corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service by described PDS to source base station, and sent the information of the resource of corresponding LTE business by described MME to described source base station.
Preferably, described receiving element 50, also for being received the handover request of corresponding group service and the handover request of corresponding LTE business by described PDS or described MME;
Described allocation units 60, handover request also for receiving according to described receiving element 50, distribute the resource of corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service to source base station by described PDS or described MME, and the information of the resource of corresponding LTE business.
Preferably, this device also comprises:
Second determining unit 70, during for determining the handover request of the handover request of the corresponding group service that described receiving element 50 receives and corresponding LTE business corresponding same UE, triggers described allocation units 60;
Described allocation units 60 for the SRB that shares for the group service of described UE and LTE traffic assignments and access channel resource, and are DRB corresponding to the group service of described UE and LTE traffic assignments.
The embodiment of the present invention also records a kind of base station, comprises aforesaid switching device shifter.
Fig. 3 is the composition structural representation of the base station switched system of the embodiment of the present invention, as shown in Figure 3, comprising: the first base station 32, base station 31, second, PDS33, MME34 and UE35; Wherein,
Described first base station 31, during for determining that UE35 uses LTE business and group service simultaneously, initiates to switch to described second base station 32 by PDS33 and/or MME34; According to the resource that described second base station 32 is described UE35 distribution, described UE35 is indicated to be switched to described second base station 32;
Described second base station 32, for being described UE35 Resources allocation.
Below to send handover request by PDS and MME, be described in further details the changing method of the embodiment of the present invention, device, equipment and system, Fig. 4 is the realization flow schematic diagram one that the base station of the embodiment of the present invention switches, and as shown in Figure 4, comprising:
Step 401:UE sends measurement report to eNB1;
The strategy that UE issues according to eNB1, when determining to meet transmission measurement report condition, sends measurement report to Current Serving BTS eNB1, wherein carries the signal strength information of eNB1 and neighbor cell own base station.
Step 402:eNB1 sends to switch to PDS and MME and requires (Handover Required);
ENB1 is according to pre-configured strategy, and the measurement report that step 401 receives, determine to need to switch to eNB2, simultaneously, eNB1 determines that UE is current and is in group service state and LTE activation of service state, namely UE uses group service and LTE business simultaneously, and meets the condition switching to eNB2, then send the switching requirement switching to eNB2 to PDS and MME simultaneously; Wherein, MME is the corresponding LTE business of EPC() in network element, PDS is the corresponding group service of DSS() in network element; Sending switching requirement to PDS and MME can ensure to require the synchronous of response to switching simultaneously, improving the success rate of switching.
Step 403:PDS and MME sends handover request (Handover Request) to eNB2;
The corresponding group service of the handover request that PDS sends, the corresponding LTE business of the handover request that MME sends.
Step 404:eNB2 sends handover request response to PDS and MME;
ENB2 receives the handover request in step 402, determine the corresponding same UE of handover request, and being defined as the information of the resource that this UE distributes, the information for the group service of UE and the resource of LTE traffic assignments be carried in handover request response, correspondence is sent to PDS and MME; For the information of the resource of UE distribution comprises:
1) the general packet radio service tunnel agreement (GTP carrying LTE business and group service is respectively used to, GPRS Tunnel Protocol) information, comprise transport layer address and endpoint of a tunnel identify label number (TEID, Tunnel Endpoint IDentity);
2) for making eNB1 to the GTP tunnel information of eNB2 anti-pass data;
3) mobility control information and wireless resource configuration, wherein, mobility control information comprises Target cell ID, frequency point information, and access channel information etc.; Wireless resource configuration comprises the information of SRB and DRB distributing to UE.
In the information of the resource of above-mentioned distribution, the form that mobility control information and wireless resource configuration connect reconfiguration message with wireless heterogeneous networks (RRC, Radio Resource Control) agreement is carried in the handover request response of this step eNB2 transmission.
In the resource of above-mentioned distribution except mobility control information and SRB are the resource that shares of LTE business and group service, other resources, such as GTP information and DRB, the different business for UE is needed to distribute respectively, therefore, when receiving the handover request of corresponding different business in this step, need first to determine the whether corresponding same UE of handover request, distribute different mobility control informations and SRB to avoid the different business for same UE.
Step 405:PDS and MME sends switching command to eNB1;
This switching command carries the information that eNB2 in step 404 is the resource that UE distributes, and, in the resource information of distributing in step 404, the form that mobility control information is connected reconfiguration message with wireless resource configuration with RRC is carried in the switching command of this step PDS and MME transmission.
Step 406:eNB1 sends RRC to UE and connects reconfiguration message;
ENB1 will be connected reconfiguration message from extracting RRC in the switching command of PDS with MME and merge respectively, the RRC connection reconfiguration message after merging is sent to UE, carries out handover operation to make UE.
Step 407: state transfer;
PDCP SN information corresponding for group service is sent to PDS by eNB1, and PDCP SN information corresponding for LTE business is sent to MME.
Step 408: state transfer;
PDCP SN information is sent to eNB2 by PDS and MME respectively.
After step 408, eNB1 is by the downlink data not being sent to UE when switching and perform in time and the affirmation mode (AM do not delivered in time, Acknowledge Mode) upstream data back transfer to eNB2, these data comprise the data of the correspondence of group service and data corresponding to LTE business, by the PDCP SN information of eNB2 according to the different business received after having switched, and the DRB information that business is corresponding, carry out the delivery of data.
Step 409:UE sends RRC connection and has reshuffled message to eNB2;
RRC after the merging that UE receives according to step 406 connects reconfiguration message and operates, and after operation completes, sends RRC to eNB2 connect and reshuffled message, and aforementioned operation comprises:
1) UE is according to frequency, the id information of eNB2 said target community, and search Target cell, carries out down-going synchronous;
2) radio bearer is re-established;
3) carry out Stochastic accessing, set up uplink synchronous with Target cell;
Step 410:eNB2 sends to PDS and MME and switches completion notice;
Step 411:MME and PDS sends release command respectively to eNB1;
To MME, PDS, step 412:eNB1 confirms that release completes.
ENB1, according to the release command received, completes the release of the resource of corresponding group service and LTE business, and confirms that release completes to MME, PDS.
Below to send handover request by means of only PDS, be described in further detail the changing method of the embodiment of the present invention, device, equipment and system, Fig. 5 is the realization flow schematic diagram two that the base station of the embodiment of the present invention switches, and as shown in Figure 5, comprising:
Step 501:UE sends measurement report to eNB1;
The strategy that UE issues according to eNB1, when determining to meet transmission measurement report condition, sends measurement report to Current Serving BTS eNB1, wherein carries the signal strength information of eNB1 and neighbor cell own base station.
Step 502:eNB1 sends handover request to PDS;
The corresponding group service of this handover request and LTE business.
ENB1 is according to pre-configured strategy, and the measurement report that step 501 receives, determine to need to switch to eNB2, simultaneously, eNB1 determines that UE is current and is in group service state and LTE activation of service state, namely UE uses group service and LTE business simultaneously, and meets the condition switching to eNB2, sends the switching requirement switching to eNB2 to PDS.
The beared information of LTE business is also carried in the handover request of this step.
Step 503:PDS sends handover request to eNB2;
The corresponding group service of this handover request and LTE business.
Step 504:eNB2 sends handover request response to PDS;
ENB2 receives the handover request in step 502, is defined as the information of the resource that this UE distributes, and the information for the group service of UE and the resource of LTE traffic assignments is carried in handover request response, is sent to PDS; For the information of the resource of UE distribution comprises:
1) be respectively used to the GTP tunnel information carrying LTE business and group service, comprise transport layer address and endpoint of a tunnel ID;
2) for making eNB1 to the GTP tunnel information of eNB2 anti-pass data;
3) mobility control information and wireless resource configuration, wherein, mobility control information comprises Target cell ID, frequency point information and access channel information; Wireless resource configuration comprises SRB and DRB distributing to UE.
In the information of the resource of above-mentioned distribution, the form that mobility control information is connected reconfiguration message with wireless resource configuration with RRC is carried in the handover request response of this step eNB2 transmission.
Step 505:PDS sends switching command to eNB1;
This switching command carries the information that eNB2 in step 504 is the group service of UE and the resource of LTE traffic assignments, and, in the resource information of distributing in step 504, the form that mobility control information is connected reconfiguration message with wireless resource configuration with RRC is carried in the switching command of this step PDS transmission.
Step 506:eNB1 sends RRC to UE and connects reconfiguration message;
ENB1 connects reconfiguration message by from extracting RRC in the switching command of PDS, the RRC extracted is connected reconfiguration message and is sent to UE, carry out handover operation to make UE.
Step 507: state transfer;
PDCP SN information corresponding for group service and PDCP SN information corresponding to LTE business are sent to PDS by eNB1.
Step 508: state transfer;
PDCP SN information is sent to eNB2 by PDS.
After step 508, eNB1 is not sent to the upstream data back transfer of the downlink data of UE and the AM pattern of delivery in time in time to eNB2 when switching being performed, these data comprise the data of the correspondence of group service and data corresponding to LTE business, by the PDCP SN information of eNB2 according to the business received after having switched, and the DRB information of business, carry out data delivery.
In the embodiment of the present invention, owing to sending handover request by PDS, and in PDS, only have the beared information of the group service of UE, and there is no the beared information of the LTE business of UE, therefore, in step 502, the beared information of the LTE business of UE is sent to PDS by eNB1 when PDS sends handover request, and sends to eNB2 by PDS in step 503.So, eNB2 can according to the beared information of different business, and PDCP SN information, carries out data delivery.
Step 509:UE sends RRC connection and has reshuffled message to eNB2;
UE connects reconfiguration message according to the RRC that step 506 receives and operates, and has reshuffled message to eNB2 transmission RRC connection after operation completes, and aforementioned operation comprises:
1) UE is according to frequency, the id information of eNB2 said target community, and search Target cell, carries out down-going synchronous;
2) radio bearer is re-established;
3) carry out Stochastic accessing, set up uplink synchronous with Target cell;
Step 510:eNB2 sends to PDS and switches completion notice;
Step 511:eNB2 is to MME transmit path handover request;
Path handover request is used to indicate MME and the carrying of LTE business is switched to eNB2 by eNB1, namely respectively the carrying between MME and eNB1 is switched to MME and eNB2.
Before step 511, owing to not receiving switching requirement by MME, therefore still there is the carrying of corresponding LTE business between MME and eNB1, correspondingly, carrying between needing MME and eNB1 switches to the carrying between MME and eNB2, comprises signaling and Deta bearer.
Step 512:MME replys to eNB2 reverse-path handover request;
Mark MME completes the switching of LTE business.
Step 513:MME and PDS sends release command respectively to eNB1;
To MME, PDS, step 514:eNB1 confirms that release completes.
ENB1, according to the release command received, completes the release of the resource of corresponding group service and LTE business, and confirms that release completes to MME, PDS.
Below to send handover request by MME, be described in further detail the changing method of the embodiment of the present invention, device, equipment and system, Fig. 6 is the realization flow schematic diagram three that the base station of the embodiment of the present invention switches, and as shown in Figure 6, comprising:
Step 601:UE sends measurement report to eNB1;
UE, according to the pre-configured strategy in this locality, determines to meet when sending measurement report condition, sends measurement report, wherein carry the signal strength information of eNB1 and neighbor cell own base station to Current Serving BTS eNB1.
Step 602:eNB1 sends handover request to MME;
The corresponding group service of this handover request and LTE business.
ENB1 is according to pre-configured strategy, and the measurement report that step 601 receives, and determines to need to switch to eNB2, simultaneously, eNB1 determines that UE is current and uses group service and LTE business simultaneously, and meets the condition switching to eNB2, sends the switching requirement switching to eNB2 to MME.
The beared information of group service is also carried in the handover request of this step.
Step 603:MME sends handover request to eNB2;
The corresponding group service of this handover request and LTE business.
Step 604:eNB2 sends handover request response to MME;
ENB2 receives the handover request in step 602, is defined as the information of the resource that this UE distributes, and the information for the group service of UE and the resource of LTE traffic assignments is carried in handover request response, is sent to MME; For the information of the resource of UE distribution comprises:
1) be respectively used to the GTP tunnel information carrying LTE business and group service, comprise transport layer address and endpoint of a tunnel ID;
2) for making eNB1 to the GTP tunnel information of eNB2 anti-pass data;
3) mobility control information and wireless resource configuration, wherein, mobility control information comprises Target cell ID, frequency point information, and access channel information etc.; Wireless resource configuration comprises the SRB distributing to UE, and DRB.
In the information of the resource of above-mentioned distribution, the form that mobility control information is connected reconfiguration message with wireless resource configuration with RRC is carried in the handover request response of this step eNB2 transmission.
Step 605:MME sends switching command to eNB1;
This switching command carries the information that eNB2 in step 604 is the group service of UE and the resource of LTE traffic assignments, and, in the resource information of distributing in step 604, the form that mobility control information is connected reconfiguration message with wireless resource configuration with RRC is carried in the switching command of this step PDS transmission.
Step 606:eNB1 sends RRC to UE and connects reconfiguration message;
The RRC extracted, by connecting reconfiguration message from extracting RRC in the switching command of MME respectively, being connected reconfiguration message and being sent to UE, carrying out handover operation to make UE by eNB1.
Step 607: state transfer;
PDCP SN information corresponding for group service and PDCP SN information corresponding to LTE business are sent to MME by eNB1.
Step 608: state transfer;
PDCP SN information is sent to eNB2 by MME.
After step 608, eNB1 is not sent to the upstream data back transfer of the downlink data of UE and the AM pattern of delivery in time in time to eNB2 when switching being performed, these data comprise the data of the correspondence of group service and data corresponding to LTE business, by the PDCP SN information of eNB2 according to the business received after having switched, and the DRB information of business, carry out data delivery.
In the embodiment of the present invention, owing to sending handover request by MME, and in MME, only have the beared information of the LTE business of UE, and there is no the beared information of the group service of UE, therefore, in step 602, the beared information of the group service of UE is sent to MME by eNB1 when MME sends handover request, and sends to eNB2 by MME in step 603.So, eNB2 can according to the beared information of different business, and PDCP SN information, carries out data delivery.
Step 609:UE sends RRC connection and has reshuffled message to eNB2;
UE connects reconfiguration message according to the RRC that step 606 receives and operates, and completes message to eNB2 transmission reprovision after operation completes, and aforementioned operation comprises:
1) UE is according to frequency, the id information of eNB2 said target community, and search Target cell, carries out down-going synchronous;
2) radio bearer is re-established;
3) carry out Stochastic accessing, set up uplink synchronous with Target cell;
Step 610:eNB2 sends to MME and switches completion notice;
Step 611:eNB2 is to PDS transmit path handover request;
Path handover request is used to indicate PDS and the carrying of group service is switched to eNB2 by eNB1, namely respectively the carrying between PDS and eNB1 is switched to PDS and eNB2.
Before step 611, owing to not receiving switching command by PDS, therefore still there is the carrying of corresponding group service between PDS and eNB1, correspondingly, carrying between needing PDS and eNB1 switches to the carrying between MME and eNB2, comprises signaling and Deta bearer.
Step 612:PDS replys to eNB2 reverse-path handover request;
Mark PDS completes the switching of group service.
Step 613:MME and PDS sends release command respectively to eNB1;
Step 614:eNB1 confirms resource release to MME, PDS.
ENB1, according to the release command received, completes the release of the resource of corresponding group service and LTE business, and confirms that release completes to MME, PDS.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (18)
1. a changing method, is characterized in that, the method comprises:
When first base station determines that user equipment (UE) uses Long Term Evolution LTE business and group service simultaneously, initiate to switch to the second base station by trunking dispatch server PDS and/or mobile management entity MME;
Described first base station is the resource that described UE distributes according to described second base station, indicates described UE to be switched to described second base station.
2. method according to claim 1, is characterized in that, described first base station initiates to switch to the second base station by PDS and MME, comprising:
Described first base station sends the handover request of corresponding group service to described second base station by described PDS, and sent the handover request of corresponding LTE business to described second base station by described MME;
Correspondingly, the method also comprises:
Described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service by described PDS to described first base station, and sent the information of the resource of corresponding LTE business by described MME to described first base station.
3. method according to claim 1, it is characterized in that, when described first base station initiates to switch to the second base station by PDS and MME, described first base station is the resource that described UE distributes according to described second base station, indicate described UE to be switched to described second base station, comprising:
Extract mobility control information and wireless resource configuration the information of the resource that the information of the resource that described first base station sends from described PDS respectively and described MME send, be carried on radio resource control RRC after the information extracted being merged and connect in reconfiguration message and send to described UE.
4. method according to claim 1, is characterized in that, described first base station initiates to switch to the second base station by PDS or MME, comprising:
Described first base station sends the handover request of corresponding group service to described second base station by described PDS, and the handover request of corresponding LTE business; Or,
Described first base station sends the handover request of corresponding group service and the handover request of corresponding LTE business by described MME to described second base station;
Correspondingly, the method also comprises:
Described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, and is sent the information of the resource of corresponding group service to described first base station by described PDS or described MME, and the information of the resource of corresponding LTE business.
5. the method according to claim 2 or 4, is characterized in that, described second base station is the resource that described UE distributes corresponding group service, and the resource of corresponding LTE business, comprising:
The handover request of the corresponding group service received and the corresponding same UE of handover request of corresponding LTE business are determined in described second base station, the Signaling Radio Bearer SRB shared for the group service of described UE and LTE traffic assignments and access channel resource, and be Data Radio Bearer DRB corresponding to the group service of described UE and LTE traffic assignments.
6. method according to claim 1, is characterized in that,
When described first base station initiates to switch to described second base station by described PDS and described MME, the method also comprises:
The PDCP sequence number PDCP SN information of corresponding group service is sent to described second base station by described PDS by described first base station, the PDCP SN information of corresponding LTE business is sent to described second base station by described MME, and initiates the data inverse-transmitting of corresponding group service and LTE business to described second base station;
When described first base station initiates to switch to described second base station by described PDS or described MME, the method also comprises:
The PDCP SN information correspondence of the PDCP SN information of corresponding group service and corresponding LTE business is sent to described second base station by described PDS or described MME by described first base station, and initiates the data inverse-transmitting of corresponding group service and LTE business to described second base station.
7. the method according to claim 1,4,5 or 6, is characterized in that,
When described first base station initiates to switch to the second base station by described PDS, the method also comprises:
Described second base station indicates described MME that the carrying of corresponding LTE business is switched to described second base station from described first base station;
When described first base station initiates to switch to the second base station by described MME, the method also comprises:
Described second base station indicates described PDS that the carrying of corresponding group service is switched to described second base station from described first base station.
8. a switching device shifter, is characterized in that, this device comprises: the first determining unit, switch unit and indicating member; Wherein,
Described first determining unit, during for determining that user equipment (UE) uses LTE business and group service simultaneously, triggers described switch unit;
Described switch unit, for initiating to switch to target BS by PDS and/or MME;
Described indicating member, for being the resource that described UE distributes according to described second base station, indicates described UE to be switched to described target BS.
9. device according to claim 8, is characterized in that,
Described switch unit, also for being sent the handover request of corresponding group service to described target BS by described PDS, and sends the handover request of corresponding LTE business by described MME to described target BS;
Described indicating member, be also the information that described UE distributes the resource of corresponding group service for being received described target BS by described PDS, receiving described target BS by described MME is the information that described UE distributes the resource of corresponding LTE business.
10. device according to claim 8, is characterized in that,
Described indicating member, when also initiating to switch to target BS by PDS and MME for described switch unit, extract mobility control information and wireless resource configuration the information of the resource that the information of the resource sent from described PDS respectively and described MME send, be carried on RRC after the information extracted being merged and connect in reconfiguration message and send to described UE.
11. devices according to claim 8, is characterized in that,
Described switch unit, also for being sent the handover request of corresponding group service to described target BS by described PDS, and the handover request of corresponding LTE business; Or,
The handover request of corresponding group service and the handover request of corresponding LTE business is sent to described target BS by described MME.
12. devices according to claim 8, is characterized in that, this device also comprises anti-pass unit; Wherein,
Described switch unit, time also for initiating to switch to described second base station by described PDS and described MME, the PDCP SN information of corresponding group service is sent to described target BS by described PDS, the PDCP SN information of corresponding LTE business is sent to described target BS by described MME, and triggers described anti-pass unit; When initiating to switch to described second base station by described PDS or described MME, the PDCP SN information correspondence of the PDCP SN information of corresponding group service and corresponding LTE business is sent to described target BS by described PDS or described MME, and triggers described anti-pass unit;
Described anti-pass unit, for initiating the data inverse-transmitting of corresponding group service and LTE business to described target BS.
Device described in 13. according to Claim 8,11 or 12, is characterized in that,
Described switch unit, time also for initiating to switch to described target BS by described PDS, indicates described MME that the carrying of corresponding LTE business is switched to described target BS; When initiating to switch to described target BS by described MME, indicate described PDS that the carrying of corresponding group service is switched to described target BS.
14. 1 kinds of switching device shifters, is characterized in that, this device comprises: receiving element and allocation units; Wherein,
Described receiving element, for receiving the handover request of corresponding group service, being received the handover request of corresponding LTE business by MME by PDS;
Described allocation units, for the handover request received according to described receiving element, distribute the resource of corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service by described PDS to source base station, and sent the information of the resource of corresponding LTE business by described MME to described source base station.
15. devices according to claim 14, is characterized in that,
Described receiving element, also for being received the handover request of corresponding group service and the handover request of corresponding LTE business by described PDS or described MME;
Described allocation units, handover request also for receiving according to described receiving element, distribute the resource of corresponding group service, and the resource of corresponding LTE business, sent the information of the resource of corresponding group service to source base station by described PDS or described MME, and the information of the resource of corresponding LTE business.
16. devices according to claims 14 or 15, it is characterized in that, this device also comprises:
Second determining unit, during for determining the handover request of the handover request of the corresponding group service that described receiving element receives and corresponding LTE business corresponding same UE, triggers described allocation units;
Described allocation units for the SRB that shares for the group service of described UE and LTE traffic assignments and access channel resource, and are DRB corresponding to the group service of described UE and LTE traffic assignments.
17. 1 kinds of base stations, is characterized in that, this base station comprises the switching device shifter as described in any one of claim 8 to 16.
18. 1 kinds of switched systems, is characterized in that, this system comprises: the first base station, the second base station, PDS, MME and UE; Wherein,
Described first base station, during for determining that user equipment (UE) uses LTE business and group service simultaneously, initiates to switch to described second base station by PDS and/or MME; According to the resource that described second base station is described UE distribution, described UE is indicated to be switched to described second base station;
Described second base station, for being described UE Resources allocation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310300609.6A CN104301954A (en) | 2013-07-17 | 2013-07-17 | Switching method, device, base stations and system |
| PCT/CN2014/079189 WO2014166458A1 (en) | 2013-07-17 | 2014-06-04 | Switching method, device, base station, system and computer storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310300609.6A CN104301954A (en) | 2013-07-17 | 2013-07-17 | Switching method, device, base stations and system |
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