CN101848505B - Plot switchover method based on multi-plot joint dispatching, device and system - Google Patents
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Abstract
The invention discloses a plot switchover method based on multi-plot joint dispatching. In the method, when a source plot which a mobile station UE belongs to and a target plot which the UE moves to belong to the same multi-point joint transmission COMP dispatching set, a source plot base station administrating the source plot directly sends a wireless control reconfiguration request message to the UE and indicates the UE to re-configure network parameters and start switchover, wherein the plots contained by the COMP dispatching set maintain synchronous, so a random access process started by the UE for the synchronization with the target plot is eliminated, and the switchover process is simplified so as to shorten the execution time of the switchover process and the time of transmission stop caused by the switchover of the business; and simultaneously, RACH specialized resources needing to be occupied by switchover are greatly saved, and the waste of system resources is avoided. The invention also discloses a base station and a communication system.
Description
Technical field
The application relates to communication system, particularly a kind of cell switching method based on multi-plot joint dispatching, Apparatus and system.
Background technology
At existing Long Term Evolution (Long Term Evolution; LTE) in the system; Because there is mobility in travelling carriage (UE), therefore, as UE during in each moving between cells; The source cell base station of the cell-of-origin of administration UE current ownership (below be called cell-of-origin ENB) can be initiated the sub-district switching flow, and its concrete operations step is following:
Step 1: cell-of-origin ENB sends controlled in wireless reconfiguration request (RRC ConnectionReconfiguration) message to UE.
In RRC Connection ReconfigurationE message; Carry radio resource configuration parameters, security parameter and mobile message that UE need use at Target cell or the like; Also carry RACH (the Random Access Channel that distributes to UE simultaneously; RACH) resource information comprises in the RACH resource information and inserts pilot tone (preamble) and corresponding physical RACH set group index (PRACH resource) at random that the PRACH resource can be used for indicating the actual physical resources of preamble carrying; Be the set of PRACH resource, can corresponding several PRACH resources.
Step 2:UE receives RRC Connection Reconfiguration message; And use the special-purpose RACH resource be assigned to send and insert request message at random to the target cell base station of administration Target cell (below be called Target cell ENB), to realize self synchronous with Target cell.
Step 3, Target cell ENB return accidental access response message to UE after UE is switched to the sub-district of self administering.
UE can be through in accidental access response message, carrying the time adjustment (Timing Advance, TA) information realizes synchronously with Target cell.
Step 4, UE return controlled in wireless to the Target cell ENB of management objectives sub-district and reshuffle completion message RRC Connection Reconfiguration Complete message.
For example, UE can be through the uplink authorization UL GRANT information of carrying in the accidental access response message, and the transmission controlled in wireless is reshuffled and accomplished message RRC Connection ReconfigurationComplete message to cell-of-origin ENB in Target cell.
In above-mentioned switching flow, owing to need reconfigure relevant network parameter, therefore, network side and UE need stop the wireless bearer service data (Data Radio Bearer, transmission DRB) is up to completing successfully of switching flow.In switching flow, employed RACH resource comprised two parts when UE inserted at random: preamble and PRACH resource, and wherein, preamble inserts pilot tone at random:
If 0 expression: UE of the ID of preamble will adopt state of conflict at random access way realize with Target cell synchronously.At this moment, UE will initiate access process at random by random choose preamble from public preamble, and to experience conflict solve (Contention Resolution, CR) process obtain with Target cell synchronously.The so-called CR stage promptly is that uplink authorization information that UE carries in according to accidental access response message is when sending upstream data; To in the packet that sends, carry a C-RNTI information; And start conflict solution timer simultaneously, and in the PDCCH control signaling that network side issues, carry this C-RNTI information, then represent the success of CR process; If before timer expiry, do not receive the C-RNTI information that network side returns, then represent the CR procedure failure.Because the CR process need takies the too much time of implementation, therefore, UE need expend the long time realize with Target cell synchronously, correspondingly, also make UE need expend the longer time and accomplish switching flow.Simultaneously, because business datum can be hung up and do not do transmission in the switching flow, therefore, expend the too much time and accomplish switching flow and mean that also professional transmission break period can be long.
If the ID of preamble sign indicating number non-0 then expression: UE will adopt non-competing type at random access way realize with Target cell synchronously.At this moment; Network side need distribute the dedicated preamble of switching use and the PRACH resource of required use to UE; Before UE accomplishes access at random; Network side needs always for this UE keeps dedicated preamble and the indicated PRACH resource collection of special-purpose PRACH-maskindex that has distributed, and this part resource can not be by other UE uses, and this will cause resource waste to a certain extent.
At present; In LTE-A (the LTE system of the upgrading) network of introducing the COMP technology, when UE switches, carry out associative operation between each sub-district (abbreviating the COMP sub-district as) of the same COMP scheduling of participation with reference to the switching flow of existing LTE system; Because the LTE system is different with the codes and standards that the LTE-A system is suitable for; Therefore, the executive mode of LTE intra-system handover flow process also is not suitable for the LTE-A system, so; Just need to propose a kind of new cell switching method to be fit to the running environment of LTE-A system, to reach optimal effectiveness.
Summary of the invention
The application embodiment provides a kind of cell switching method based on multi-plot joint dispatching, Apparatus and system, spent time when between the COMP sub-district, switching in order to reduce UE, and avoid resource waste.
The concrete technical scheme that the application embodiment provides is following:
A kind of cell switching method based on multi-plot joint dispatching comprises:
Moving institute's Target cell extremely when the cell-of-origin of mobile station UE ownership with UE belongs to same multi-point joint transmission COMP and dispatches when gathering; Administer the source cell base station of said cell-of-origin and directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch; Wherein, keep synchronously between each sub-district that said COMP scheduling set comprises;
Said source cell base station receives that UE returns when being used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives said source cell base station or management objectives sub-district being used to of returning.
A kind of base station is used to administer the cell-of-origin of the current ownership of travelling carriage, comprising:
Communication unit is used for carrying out information interaction with mobile station UE and other base stations;
Judging unit, the cell-of-origin that is used to judge the UE ownership and UE move institute's Target cell extremely and whether belong to same multi-point joint transmission COMP and dispatch and gather; Keep synchronously between each sub-district that said COMP scheduling set comprises;
First processing unit; Being used in cell-of-origin that said judging unit is confirmed UE ownership moving institute's Target cell extremely with UE belongs to same COMP and dispatches when gathering; Directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch;
Second processing unit; Be used for receive that UE returns be used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message the time; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives this base station or management objectives sub-district being used to of returning.
A kind of communication system comprises:
Source cell base station; Be used to administer the cell-of-origin of mobile station UE ownership; Moving institute's Target cell extremely when the cell-of-origin of UE ownership with UE belongs to same multi-point joint transmission COMP and dispatches when gathering; Directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch; And receive that UE returns be used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message the time; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives said source cell base station or management objectives sub-district being used to of returning; Wherein, keep synchronously between each sub-district that said COMP scheduling set comprises;
Target cell base station is used to administer Target cell, and carries out information interaction with said UE and said source cell base station.
Among the application embodiment; In the LTE-A system; Moving institute's Target cell extremely when the cell-of-origin of mobile station UE ownership with UE belongs to same multi-point joint transmission COMP and dispatches when gathering; Administer the source cell base station of said cell-of-origin and directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch; Wherein, keep synchronously between each sub-district that said COMP scheduling set comprises; Said source cell base station receives that UE returns when being used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives said source cell base station or management objectives sub-district being used to of returning.Like this; Just saved UE and be obtain and Target cell between the access process at random that starts synchronously; Simplified switching flow, thus the time of implementation that has shortened switching flow with professional owing to switching flow causes time of stopping to transmit, simultaneously; Also saved to a great extent and switched the required RACH private resource that takies, avoided resource waste.
Description of drawings
Fig. 1 is LTE-A Solution Architecture figure among the application embodiment;
Fig. 2 is a base station functions structure chart among the application embodiment;
Fig. 3 and Fig. 4 are UE switching flow figure between the COMP sub-district among the application embodiment.
Embodiment
In order to propose the cell switching method of a kind of LTE-A of being applicable to system; Among the application embodiment; When the cell-of-origin of travelling carriage (UE) ownership and UE move Target cell extremely belong to same multi-point joint transmission (Co-ordinated Multiple Point Transmission; When COMP) scheduling is gathered, administer the source cell base station of said cell-of-origin and directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch; Wherein, keep synchronously between each sub-district that said COMP scheduling set comprises; Said source cell base station receives that UE returns when being used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives said source cell base station or management objectives sub-district being used to of returning.
In the LTE-A system; Introduced the new technology of multi-plot joint dispatching and transmission; Abbreviate multi-point joint transmission technology (being the COMP technology) as; So-called COMP technology is meant that promptly (abbreviate as: descending CoMP), perhaps, a plurality of sub-districts of network side can receive the upstream data that UE sends and (abbreviate as: up CoMP) downlink data that UE can receive a plurality of sub-districts simultaneously and send simultaneously; Obviously; Adopt the COMP technology to send downlink data to UE simultaneously, or to adopt the COMP technology to receive each sub-district of the upstream data that UE sends simultaneously inevitable all be synchronized cells, and the sub-district of UE and its current ownership must be synchronous; So; Can think that UE and all sub-districts of participating in the COMP scheduling all are synchronous, therefore, the dispatching command that UE only need monitor its current home cell can be known the scheduling authorization situation of other sub-districts of participating in the COMP scheduling.
Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.
Consult shown in Figure 1ly, among the application embodiment, the LTE-A system comprises base station 10 and travelling carriage 11 (below be called UE); A plurality of sub-districts can be administered in a base station 10, among the application embodiment, the sub-district of the current ownership of UE are called the cell-of-origin; And the base station 10 that will administer the cell-of-origin is called source cell base station (being cell-of-origin ENB), simultaneously, with UE move sub-district extremely be called Target cell; And the base station 10 that will administer Target cell is called target cell base station (being Target cell ENB), wherein
UE is used for carrying out information interaction with the cell-of-origin ENB and the Target cell ENB of network side;
Cell-of-origin ENB; Be used to administer the cell-of-origin of UE ownership; When moving institute's Target cell extremely and belong to same COMP scheduling set with UE, directly send the controlled in wireless reconfiguration request message, indicate UE to carry out network parameter again and dispose and begin to switch to UE when the cell-of-origin of UE ownership; And receive that UE returns be used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message the time; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the Target cell ENB that receives said cell-of-origin ENB or management objectives sub-district being used to of returning;
Target cell ENB is used to administer Target cell, and carries out information interaction with said travelling carriage and said cell-of-origin ENB.
Consulting shown in Figure 2ly, among the application embodiment, is example with cell-of-origin ENB, comprises communication unit 100, judging unit 101, first processing unit 102 and second processing unit 103 in the ENB of cell-of-origin, wherein,
Based on the said system framework; In practical application, UE all is synchronous with each sub-district (being designated hereinafter simply as the COMP sub-district) of participating in this UE of scheduling, in the present embodiment; All sub-districts of participating in same COMP scheduling are called a COMP scheduling set; And in the LTE-A system, have a plurality of COMP scheduling set, when UE switches between any two sub-districts that belong to different COMP scheduling set; Still need adopt existing state of conflict/non-competing lane access way at random, obtain and Target cell between synchronously; And UE is when switching between any two sub-districts that belong to same COMP scheduling set; Need not to adopt any access way at random to obtain and Target cell between synchronously; Can directly switch to Target cell by the cell-of-origin, like this, the time that just need not labor is carried out access process at random; Thereby improved the execution efficient of switching flow to a great extent; On the other hand, also need not to take special-purpose Preamble resource and PRACH resource and carry out access process at random, thereby improved usage factor of system resource effectively.
Consult shown in Figure 3ly, among the application embodiment, UE is in that to have a detailed process that switches between the COMP sub-district of descending COMP ability following:
Step 300: cell-of-origin ENB confirms that UE moves to Target cell by the cell-of-origin.
In the practical application; UE is under connection status; Cell-of-origin ENB can be through RRC signaling indication UE according to the regular reporting measurement reports of preset rules; UE can measure the signal of neighbor cell and it is carried at and report to network side in the measurement report, and cell-of-origin ENB can judge the signal condition of UE in each sub-district according to the measurement report that receives, when knowing that the signal quality of UE in other sub-districts is better than the signal quality in the cell-of-origin; Confirm that UE has moved to other sub-districts, and trigger corresponding switching flow.All adopt this kind method in following examples, will repeat no more.
Step 301: cell-of-origin ENB judges whether Target cell belongs to same COMP scheduling set with the cell-of-origin, if then carry out step 302; Otherwise, execution in step 308.
In the practical application; The employed COMP scheduling of UE set is disposed by network side; Network side can be confirmed the COMP scheduling set of UE according to the measurement report that each neighbor cell of UE is uploaded; Also can confirm the COMP scheduling set of UE according to mode such as pre-configured, and will be with the COMP scheduling set notice UE that finally confirms.Therefore, cell-of-origin ENB can learn just according to the configuration information of this locality or designated storage area preservation whether Target cell and cell-of-origin belong to same COMP scheduling set.For example, cell-of-origin ENB can judge whether Target cell and cell-of-origin belong to same COMP scheduling set according to the cell ID ID of Target cell.All adopt this kind method in following examples, will repeat no more.
Step 302: cell-of-origin ENB sends controlled in wireless reconfiguration message, i.e. RRC ConnectionReconfiguration message to UE.
In RRC Connection Reconfiguration message, carry radio resource configuration parameters, security parameter and mobile message that UE need use at Target cell or the like.
Step 303:UE receives the RRCConnection Reconfiguration message of cell-of-origin ENB transmission in cell-of-origin or Target cell after; Produce the successful affirmation message of expression RRC ConnectionReconfiguration message sink in this locality; And this acknowledge message sent to cell-of-origin ENB; Then, according to the indication of RRC Connection Reconfiguration message, the network parameter of these stratum two each protocol sublayers (being each sublayer of L2) is carried out relevant configuration.
In the practical application; The sublayer of L2 comprises wireless chain control layer (Radio Link Control; RLC), media access control layer (Medium Access Control, MAC) with bag data fusion protocol layer (PacketData Convergence Protocol, PDCP); These three all is the sublayer of L2, is used for the transmission control of data.
Step 304: after cell-of-origin ENB receives the affirmation message that UE reports; Confirm that UE successfully receives RRC Connection Reconfiguration message; Then continue scheduling UE transmission upstream data in the cell-of-origin, promptly indicate UE to send RRC Connection Reconfiguration Complete message to network side.
Step 305:UE sends RRC Connection ReconfigurationComplete message to Target cell ENB.
Step 306: after Target cell ENB receives the RRC Connection ReconfigurationComplete message of UE transmission; Confirm that UE switches to Target cell by the cell-of-origin; Then be used to represent the successful affirmation message of RRC Connection Reconfiguration Complete message sink, and this acknowledge message is back to UE in local (being among the L2) generation.
After step 307:UE receives the affirmation message that Target cell ENB issues, confirm that switching flow accomplishes, the sub-district that is about to current self ownership changes to Target cell by the cell-of-origin
Step 308: the execution pattern with reference to switching flow under the LTE system switches to Target cell with UE by the cell-of-origin.
Be different from the foregoing description, consult shown in Figure 4ly, under another kind of situation, UE is in that to have a detailed process that switches between the COMP sub-district of up COMP ability following:
Step 400: cell-of-origin ENB confirms that UE moves to Target cell by the cell-of-origin.
Step 401: cell-of-origin ENB judges whether Target cell belongs to same COMP scheduling set with the cell-of-origin, if then carry out step 402; Otherwise, execution in step 408.
Step 402: cell-of-origin ENB sends RCC Connection Reconfiguration message to UE.
After step 403:UE receives RCC Connection Reconfiguration message; Indication according to RRCConnection Reconfiguration message; Network parameter to the L2 sublayer carries out relevant configuration; Produce the successful affirmation message of expression RRC Connection Reconfiguration message sink at local (MAC layer or rlc layer) simultaneously, and this acknowledge message is sent to cell-of-origin ENB.
Step 404: after cell-of-origin ENB receives the affirmation message that UE reports; Confirm that UE successfully receives RRC Connection Reconfiguration message; And to UE transmission dispatching command; Promptly send uplink scheduling authorization information, be used to control the transmission of upstream data, indication UE sends RRC ConnectionReconfiguration Complete message to network side.
In the practical application, above-mentioned dispatching command both can be sent to UE by cell-of-origin ENB, also can be sent to UE by ENB indicating target sub-district, cell-of-origin ENB.
Step 405:UE mails to cell-of-origin ENB and Target cell ENB simultaneously with RRC Connection Reconfiguration Complete message.
Step 406: after cell-of-origin ENB and Target cell ENB receive the RRC ConnectionReconfiguration Complete message of UE transmission; Confirm that all UE switches to Target cell by the cell-of-origin; Then cell-of-origin ENB and Target cell ENB all generate local (being among the L2) and are used to represent that RRC ConnectionReconfiguration Complete receives successful affirmation message, and this acknowledge message that will generate is sent to UE.
After step 407:UE receives the affirmation message of any transmission among cell-of-origin ENB or the Target cell ENB, confirm that switching flow accomplishes, the sub-district that is about to self current ownership changes to Target cell by the cell-of-origin.
Step 408: the execution pattern of carrying out with reference to switching flow under the LTE system switches to Target cell with UE by the cell-of-origin.
In sum; Moving institute's Target cell extremely when the cell-of-origin of mobile station UE ownership with UE belongs to same multi-point joint transmission COMP and dispatches when gathering; Administer the source cell base station of said cell-of-origin and directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch; Wherein, keep synchronously between each sub-district that said COMP scheduling set comprises; Like this; Just saved UE and be obtain and Target cell between the access process at random that starts synchronously; Simplified switching flow, thus the time of implementation that has shortened switching flow with professional owing to switching flow causes time of stopping to transmit, simultaneously; Also saved to a great extent and switched the required RACH private resource that takies, avoided resource waste.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and the scope that do not break away from the application to the embodiment among the application.Like this, belong within the scope of the application's claim and equivalent technologies thereof if these among the application embodiment are revised with modification, then the embodiment among the application also is intended to comprise these changes and modification interior.
Claims (13)
1. the cell switching method based on multi-plot joint dispatching is characterized in that, comprising:
Moving institute's Target cell extremely when the cell-of-origin of mobile station UE ownership with UE belongs to same multi-point joint transmission COMP and dispatches when gathering; Administer the source cell base station of said cell-of-origin and directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch; Wherein, keep synchronously between each sub-district that said COMP scheduling set comprises;
Said source cell base station receives that UE returns when being used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives said source cell base station or management objectives sub-district being used to of returning.
2. the method for claim 1 is characterized in that, said source cell base station confirms that according to the identification information of cell-of-origin and the identification information of Target cell said cell-of-origin and Target cell belong to same COMP scheduling set.
3. the method for claim 1 is characterized in that, said source cell base station indication UE carries out the network parameter configuration again and comprises: indication UE carries out relevant configuration to the network parameter of its these stratum two each protocol sublayers.
4. the method for claim 1 is characterized in that, said source cell base station is through cell-of-origin or Target cell, and indication UE sends said controlled in wireless and reshuffles completion message.
5. method as claimed in claim 4 is characterized in that, also comprises:
UE receives that said source cell base station or target cell base station return when being used to represent successfully to receive said controlled in wireless and reshuffling the affirmation message of accomplishing message, the sub-district of current self ownership is changed to Target cell by the cell-of-origin, to confirm handover success.
6. like each described method of claim 1-5, it is characterized in that said cell-of-origin and Target cell have up COMP ability or descending COMP ability.
7. a base station is used to administer the cell-of-origin of the current ownership of travelling carriage, it is characterized in that, comprising:
Communication unit is used for carrying out information interaction with mobile station UE and other base stations;
Judging unit, the cell-of-origin that is used to judge the UE ownership and UE move institute's Target cell extremely and whether belong to same multi-point joint transmission COMP and dispatch and gather; Keep synchronously between each sub-district that said COMP scheduling set comprises;
First processing unit; Being used in cell-of-origin that said judging unit is confirmed UE ownership moving institute's Target cell extremely with UE belongs to same COMP and dispatches when gathering; Directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch;
Second processing unit; Be used for receive that UE returns be used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message the time; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives this base station or management objectives sub-district being used to of returning.
8. base station as claimed in claim 7 is characterized in that, said judging unit judges according to the identification information of cell-of-origin and the identification information of Target cell whether said cell-of-origin and Target cell belong to same COMP scheduling set.
9. like claim 7 or 8 described base stations, it is characterized in that said second processing unit is through cell-of-origin or Target cell, indication UE sends said controlled in wireless and reshuffles completion message.
10. a communication system is characterized in that, comprising:
Source cell base station; Be used to administer the cell-of-origin of mobile station UE ownership; Moving institute's Target cell extremely when the cell-of-origin of UE ownership with UE belongs to same multi-point joint transmission COMP and dispatches when gathering; Directly send the controlled in wireless reconfiguration request message to UE, indication UE carries out the network parameter configuration again and begins to switch; And receive that UE returns be used to represent successfully to receive the affirmation message of said controlled in wireless reconfiguration request message the time; Indication UE sends controlled in wireless to network side and reshuffles completion message; When making UE represent successfully to receive said controlled in wireless and reshuffle the affirmation message of accomplishing message, confirm handover success in the target cell base station that receives said source cell base station or management objectives sub-district being used to of returning; Wherein, keep synchronously between each sub-district that said COMP scheduling set comprises;
Target cell base station is used to administer Target cell, and carries out information interaction with said UE and said source cell base station.
11. communication system as claimed in claim 10 is characterized in that, said source cell base station confirms that according to the identification information of cell-of-origin and the identification information of Target cell said cell-of-origin and Target cell belong to same COMP scheduling set.
12., it is characterized in that said source cell base station is through cell-of-origin or Target cell like claim 10 or 11 described communication systems, indication UE sends said controlled in wireless and reshuffles completion message.
13. communication system as claimed in claim 11; It is characterized in that; UE receives that said source cell base station or target cell base station return when being used to represent successfully to receive said controlled in wireless and reshuffling the affirmation message of accomplishing message; The current sub-district that self belongs to is changed to Target cell by the cell-of-origin, to confirm handover success.
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| CN 200910202917 CN101848505B (en) | 2009-03-24 | 2009-05-18 | Plot switchover method based on multi-plot joint dispatching, device and system |
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| WO2015115034A1 (en) * | 2014-01-30 | 2015-08-06 | Sharp Kabushiki Kaisha | Systems and methods for dual-connectivity operation |
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| CN101848505A (en) | 2010-09-29 |
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