CN102595529A - Switching method and switching system based on multipoint coordination - Google Patents
Switching method and switching system based on multipoint coordination Download PDFInfo
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- H—ELECTRICITY
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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- 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
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
- H04W36/00692—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO]
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Abstract
The invention provides a switching method based on multipoint coordination. The switching method comprises the following steps that: after receiving a measurement report reported by a terminal, a source main cell determines a destination main cell, and transmits a switching request message to the destination main cell; after receiving the switching request message, the destination main cell configures resource for the terminal, before or after the terminal switches to the destination main cell, destination cell determines a destination coordination cell set and a destination switching cell set. The invention further provides a switching system based on multipoint coordination. The switching method and the switching system can reduce switching interrupt delay, improve the system throughput while switching, and select a CoMP cell set and a switching cell set again for the UE (user equipment) during or after switching, thus, the UE can get the same server after switching.
Description
Technical field
The present invention relates to LTE_A (Long Term Evolution Advanced, senior Long Term Evolution) system, be specifically related to changing method and system in CoMP (Cooperative Multi-Point, multipoint cooperative) transmission system.
Background technology
In the handoff scenario of existing GSM, accomplish switching flow by user's triggering, base station to determine usually.For the LTE system; UE (User Equipment; Subscriber equipment) when communicating with current Serving cell, wherein a kind of main application mode is: UE measures the RSRP (Reference Signal Receiving Power, Reference Signal Received Power) or RSRQ (the Reference Signal Receiving Quality of the neighbor cell of current service cell and Serving cell; Reference Signal Received Quality); The RSRP or the RSRQ that measure to find current connection base station as UE drop to below certain threshold value, and/or after RSRP or the RSRQ of a certain sub-district rises to the above and certain time of certain threshold value in the neighbor cell, trigger switching flow.Need in the handoff procedure through information interaction complicated between UE, cell-of-origin/base station, Target cell/base station and signaling transmission.
Because LTE uses quick direct-cut operation mechanism; Promptly whenever UE only exists Radio Link to be connected with a sub-district, and (zone that possibly switch is cell edge normally, and this moment, quality of wireless channel was relatively poor when UE is in cell edge like this; Presence of intercell interference is strong); Handover success rate decreases compared to soft handover, and the throughput of system also can descend during switching, and the increase of postponing a meeting or conference during handoff.
After in LTE_A, introducing the CoMP transmission technology, handoff scenario and flow process will change.Present open complete changing method when the Target cell of UE does not belong to original C oMP cooperation cell collection not still.
Summary of the invention
The technical problem that the present invention will solve provides a kind of changing method and system based on CoMP, and the throughput of system reduces the handoff time delay simultaneously when improving handover success rate and switching.
In order to address the above problem, the invention provides a kind of changing method based on multipoint cooperative, comprising:
After the measurement report of terminal to report is received in the main plot, source, confirm the target main plot, send handoff request message to said target main plot;
Said target main plot is after receiving said handoff request message; Be said terminal distribution resource; Before said terminal switches to said target main plot or after said terminal switches to said target main plot, confirm target cooperation cell collection and target switching cell collection.
Further; Said method also can have following characteristics; Main plot, said source is confirmed the target main plot as follows: the sub-district medium priority that carry from said measurement report said cell-of-origin selects a sub-district as the target main plot in the highest one type of sub-district, and wherein, the priority principle is:
The priority of priority＞other sub-districts of the sub-district that the source switching cell is concentrated, and priority＞place, the sub-district eNodeB that belongs to the sub-district of same enode b (eNodeB) with the main plot, source and main plot, source belong to the priority that there are priority＞other sub-districts of the sub-district that the X2 mouth is connected in eNodeB.
Further, said method also can have following characteristics, if one type of the highest sub-district of sub-district medium priority of carrying in the said measurement report belongs to source switching cell collection, then therefrom chooses the minimum sub-district of load as the target main plot; If one type of the highest sub-district of sub-district medium priority of carrying in the said measurement report does not belong to source switching cell collection, then therefrom sub-district of picked at random as the target main plot.
Further, said method also can have following characteristics, and said target main plot confirms that target cooperation cell collection and target switching cell collection comprise:
Target cooperation cell collection is chosen in said target main plot; Each target cooperation cell to the target cooperation cell is concentrated is sent the cooperation cell request message; When receiving the refuse information of said target cooperation cell; Said target cooperation cell is concentrated deletion from said target cooperation cell, obtain final objective cooperation cell collection;
Target switching cell collection is chosen in said target main plot; Each target switching cell of concentrating to the target switching cell sends the switching cell request message; When receiving the refuse information of said target switching cell; Said target switching cell is concentrated deletion from said target switching cell, obtain final objective switching cell collection.
Further, said method also can have following characteristics, and target cooperation cell collection and target switching cell collection are chosen according to following mode in said target main plot:
Target cooperation cell collection and target switching cell collection are chosen according to other cell informations in the measurement report of the source cooperation cell collection information, source switching cell collection information and the terminal to report that carry in the said handoff request message in said target main plot.
Further, said method also can have following characteristics, and target cooperation cell collection and target switching cell collection are chosen according to following mode in said target main plot:
Sub-district and the measurement contents that needs are measured confirmed according to other cell informations in the measurement report of the source cooperation cell collection information, source switching cell collection information and the terminal to report that carry in the said handoff request message in said target main plot; Said sub-district and the measurement contents that needs to measure sent to the main plot, source through switching response message, send said terminal through reallocation message by main plot, said source; Perhaps directly said sub-district and the measurement contents that needs to measure sent to said terminal;
Said target main plot receives said terminal and switches to the channel conditions measurement result that reports behind the said target main plot, chooses target cooperation cell collection and target switching cell collection according to said channel conditions measurement result.
Further; Said method also can have following characteristics, when choosing target cooperation cell collection, goes back the annexation with reference to sub-district to be selected and said target main plot; When choosing target switching cell collection, go back the annexation of the concentrated sub-district of reference sub-district to be selected and said target cooperation cell.
Further, said method also can have following characteristics, and said method also comprises: said target main plot also sends to said terminal through the main plot, source with said target cooperation cell collection information and target switching cell collection information; Perhaps, directly said target cooperation cell collection information and target switching cell collection information are sent to said terminal.
The present invention also provides a kind of switched system based on multipoint cooperative, comprises main plot, source and target main plot, wherein:
Main plot, said source is used for, receive the measurement report of terminal to report after, confirm the target main plot, send handoff request message to said target main plot;
Said target main plot is used for; After receiving said handoff request message; Be said terminal distribution resource, before said terminal switches to said target main plot or after said terminal switches to said target main plot, confirm target cooperation cell collection and target switching cell collection.
Further, said system also can have following characteristics, and main plot, said source comprises that the target main plot confirms the unit:
Said target main plot confirms that the unit is used for: in one type of the highest sub-district of sub-district medium priority that said measurement report carries, choose a sub-district as said target main plot, wherein, the priority principle is:
The priority of priority＞other sub-districts of the sub-district that the source switching cell is concentrated, and priority＞place, the sub-district eNodeB that belongs to the sub-district of same enode b (eNodeB) with the main plot, source and main plot, source belong to the priority that there are priority＞other sub-districts of the sub-district that the X2 mouth is connected in eNodeB.
Further; Said system also can have following characteristics; Said target main plot confirms that the unit is to be used for: if one type of the highest sub-district of sub-district medium priority that said measurement report carries belongs to source switching cell collection, then therefrom choose the minimum sub-district of load as said target main plot; If one type of the highest sub-district of sub-district medium priority of carrying in the said measurement report does not belong to source switching cell collection, then therefrom sub-district of picked at random as said target main plot.
Further, said system also can have following characteristics, and said target main plot comprises chooses the unit:
The said unit of choosing is used for: choose target cooperation cell collection; Each target cooperation cell to the target cooperation cell of choosing is concentrated is sent the cooperation cell request message; When receiving the refuse information of said target cooperation cell; Said target cooperation cell is concentrated deletion from said target cooperation cell, obtain final objective cooperation cell collection; And,
Choose target switching cell collection; Each target switching cell of concentrating to the target switching cell sends the switching cell request message; When receiving the refuse information of said target switching cell; Said target switching cell is concentrated deletion from said target switching cell, obtain final objective switching cell collection.
Further; Said system also can have following characteristics, and said other cell informations of choosing in the measurement report that the unit is the source cooperation cell collection information, source switching cell collection information and the terminal to report that are used for carrying according to said handoff request message are chosen target cooperation cell collection and target cooperation cell collection.
Further, said system also can have following characteristics, and said target main plot also comprises the measurement triggering unit, wherein:
Said measurement triggering unit is used for: other cell informations are confirmed sub-district and the measurement contents that needs are measured in the measurement report of source cooperation cell collection information, source switching cell collection information and the terminal to report that carries according to said handoff request message; Said sub-district and the measurement contents that needs to measure sent to the main plot, source through handoff response information, send said terminal through reallocation message by the main plot, source; The sub-district that perhaps directly will measure and measurement contents send to said terminal;
The said unit of choosing is used to receive said terminal and switches to the channel conditions measurement result that reports behind the said target main plot, chooses target cooperation cell collection and target switching cell collection according to said channel conditions measurement result.
Further; Said system also can have following characteristics, and is said when choosing the unit and also being used to choose target cooperation cell collection, with reference to the annexation of sub-district to be selected and target main plot; When choosing target switching cell collection, the annexation of the sub-district that reference sub-district to be selected and target cooperation cell are concentrated.
Further, said system also can have following characteristics, and said target main plot also is used for: through the main plot, source said target cooperation cell collection information and target switching cell collection information are sent to said terminal; Perhaps, directly said target cooperation cell collection information and target switching cell collection information are sent to said terminal.
Complete switching flow when the invention provides a kind of Target cell and not belonging to original C oMP cooperation cell collection as UE; The relevant parameter that relates to each step operation when switching in the invention; The choosing method that relates to the target main plot; Relate to and switch neutralization and switch the back, the flow process when relating to Target cell and choosing the CoMP cooperation cell through directly choosing or UE reporting measurement mode is chosen the method for CoMP cell set and switching cell collection.Adopt method of the present invention; Even UE is when switching; Also active auxilliary sub-district/main plot continues as UE transmission data, can reduce the handoff time delay like this, improves the throughput of system when switching; And reselect CoMP cell set and switching cell collection for UE in switching or after switching, make UE after switching, can obtain identical service.
Description of drawings
Fig. 1 switches overall procedure;
Fig. 2 is cooperation cell collection and switching cell collection sketch map;
Fig. 3 is that sketch map is chosen in target main plot (belonging to source switching cell collection);
Fig. 4 is that sketch map is chosen in target main plot (belonging to other sub-districts);
Fig. 5 is a switching flow of directly choosing the target side cell set in switching;
Fig. 6 is a switching flow of choosing the target side cell set in switching through measurement;
Fig. 7 is a switching flow of directly choosing the target side cell set after switching;
Fig. 8 switches the target side cell set is chosen in the back through measurement switching flow;
Fig. 9 switches back each cell set (the target main plot belongs to source switching cell collection) sketch map;
Figure 10 switches back each cell set (the target main plot belongs to other sub-districts) sketch map.
Embodiment
UE did not belong to the scope of the invention about choosing of above sub-district or cell set before switching, correspondingly, these notions can be specially: source cooperation cell collection, main plot, source, auxilliary sub-district, source, source switching cell collection.
UE carries out main plot when switching, auxilliary choosing of sub-district, cooperation cell collection and switching cell collection belongs to the scope of the invention, and correspondingly, these notions can be specially: target cooperation cell collection, target main plot, target secondary sub-district, target switching cell collection.
The present invention provides a kind of changing method based on multipoint cooperative, comprising:
After the measurement report of terminal to report is received in the main plot, source, confirm the target main plot, send handoff request message to said target main plot;
Said target main plot is after receiving said handoff request message; Be said terminal distribution resource; Before said terminal switches to said target main plot or after said terminal switches to said target main plot, confirm target cooperation cell collection and target switching cell collection.
Specifically describe content of the present invention below, whole switching flow is seen accompanying drawing 1:
1, the triggering of switching flow
Triggering mode and existing method are similar; Adopt UE reporting measurement reports form; Measure and report content, can select the combination in any among the RSRP/RSRQ/SINR (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio); Report condition: when the RSRP/RSRQ/SINR of main plot drops to below certain threshold value, and/or the RSRP/RSRQ/SINR of other sub-districts (sub-district that the cooperation cell collection is outer) rises to the above and certain time of certain threshold value.
2, the target main plot chooses
The measurement report that UE sends is received in the main plot, source, carries the information that RSRP/RSRQ/SINR satisfies one or more sub-districts of handoff threshold in the measurement report.
The target main plot is confirmed in main plot, said source: select a sub-district as the target main plot in the highest one type of sub-district of the sub-district medium priority that carry from said measurement report said cell-of-origin, wherein, the priority principle is:
The priority of priority＞other sub-districts of the sub-district that the source switching cell is concentrated, and priority＞place, the sub-district eNodeB that belongs to the sub-district of same enode b (eNodeB) with the main plot, source and main plot, source belong to the priority that there are priority＞other sub-districts of the sub-district that the X2 mouth is connected in eNodeB.
Concrete, comprising:
At first, screen or classification and ordination the sub-district in the measurement report according to the priority principle of " sub-district＞other sub-districts that the source switching cell is concentrated " main plot, source.
Then; The main plot, source is according to the priority principle of " sub-district＞place, the sub-district eNodeB that belongs to same eNodeB (Evolved Node B; enode b) with the main plot, source exists the X2 mouth to be connected＞other sub-districts with place, main plot, source eNodeB "; Screen or classification and ordination once more sub-district to screening on last stage, perhaps the sub-district behind the classification and ordination is on last stage screened or classification and ordination in all kinds of once more.
At last,, then therefrom choose the minimum sub-district of load, also can select at random as the target main plot if one type of the highest sub-district of priority belongs to source switching cell collection behind sub-district that screens or the classification and ordination; If do not belong to source switching cell collection, then therefrom sub-district of picked at random as the target main plot.
The execution of 3, switching
After confirming the target main plot; Handoff request message is sent to the target main plot in the main plot, source, includes but not limited to the service bearer information, switching type, switch reasons, the security information of UE, wireless access capability information, access layer configuration and the radio-resource-configuration of UE of following information: UE in the message.Selectively, carry the information of other sub-districts in source cooperation cell collection information, source switching cell collection information and the measurement report.
After handoff request message is received in the target main plot, for being about to switch the UE Resources allocation of coming.Selectively, target cooperation cell collection and target switching cell collection are confirmed according to the relevant information in the request message in the target main plot, perhaps confirm sub-district and the measurement contents that (it is required to choose cell set) needs UE to measure.Whether can select which operation of the concrete execution of this step and selection back, depend on the opportunity of choosing of target cooperation cell collection and target switching cell collection and choose mode.
The target main plot is sent switching response message and is given the main plot, source.Include but not limited to following information in the message: admitting is C-RNTI (Cell-Radio Network Temporary Identifier, the Radio Network Temporary Identifier that the sub-district is relevant), random access channel resource information and the safe relevant configuration that UE distributes with UE service bearer information, new measurement configuration, the target main plot of admitting failure successfully.Selectively, carrying the target main plot is target cooperation cell collection and the target switching cell collection information that UE chooses, the sub-district and the measurement contents that perhaps need UE to measure.
After switching response message is received in the main plot, source; Issue reallocation message and give UE; Include but not limited to following information in the message: the DRB that the target main plot has been set up (Data Radio Bearer; Data Radio Bearer) and SRB (Signal Radio Bearer, Signaling Radio Bearer) information, new measurement configuration, target main plot be C-RNTI, random access channel resource information and the safe relevant configuration that UE distributes.Selectively, carrying the target main plot is target cooperation cell collection and the target switching cell collection information that UE chooses, the sub-district and the measurement contents that perhaps need UE to measure.
After UE received reallocation message, DRB information and the comparison of the DRB information in the reallocation message with this locality discharged unnecessary DRB.Be synchronized to the target main plot then and initiate to insert at random to the target main plot, inserts successfully at random after, UE transmission reprovision completion message is to the target main plot.
If the main plot, source is handed down to and has been carried the target main plot in the reallocation message of UE is the target cooperation cell collection information that UE chooses, then behind the UE handover success, will transmit data with this target cooperation cell collection.If the main plot, source is handed down to and has been carried sub-district and measurement contents that UE measures in the reallocation message of UE, then behind the UE handover success, carry out and measure and give the target main plot the channel status reporting measuring result.The target main plot begins to carry out choosing of target cooperation cell collection and target switching cell collection.
After if the handoff request message of sending the main plot, source is received in the target main plot, be the failure of UE Resources allocation, then the response switching is prepared failed message and is given the main plot, source, and the target main plot will be reselected in the main plot, source, carry out switching then again.
4, target cooperation cell collection and target switching cell collection chooses
Target cooperation cell collection and target switching cell collection are chosen by the target main plot; Selectively; The target main plot is after receiving handoff request message; Carry out choosing of Target cell collection and target switching cell collection, perhaps after the reprovision of receiving UE is accomplished message, carry out choosing of Target cell collection and target switching cell collection.The choosing afterwards of target cooperation cell collection that be chosen at of target switching cell collection carried out.
The mode of choosing can be selected one of following dual mode:
Mode 1: the target main plot is according to the information of other sub-districts in source cooperation cell collection information, source switching cell collection information and the measurement report in the handoff request message, takes all factors into consideration the information such as signal strength signal intensity, load, path loss of sub-district and directly carries out choosing of target cooperation cell collection and target switching cell collection.In addition; Choosing of target cooperation cell collection also need be considered this sub-district and target main plot annexation (belonging to same eNodeB＞place, sub-district eNodeB with the target main plot exists the X2 mouth to be connected＞other sub-districts with place, target main plot eNodeB), and choosing of target switching cell collection needs this sub-district of consideration and target cooperation to concentrate the annexation of sub-district.
Mode 2: choosing of target cooperation cell collection and target switching cell collection carried out through the mode of UE real-time report metrical information then with reference to the information of other sub-districts in source cooperation cell collection information, source switching cell collection information and the measurement report in the handoff request message in the target main plot.Be meant that specifically the target main plot requires UE that the channel conditions of designated cell is measured, measurement contents includes but not limited to RSRP, RSRQ, SINR, CQI, path loss etc.After the UE reporting channel situation measurement result, information such as channel conditions and the load of each sub-district are taken all factors into consideration in the target main plot, confirm target cooperation cell collection and target switching cell collection.Likewise, choosing of target cooperation cell collection also need be considered this sub-district and target main plot annexation, and choosing of target switching cell collection needs this sub-district of consideration and target cooperation to concentrate the annexation of sub-district.
After confirming target cooperation cell collection; The cooperation cell request message is sent to the sub-district that the target cooperation cell is concentrated in the target main plot, includes but not limited to following information in the message: whole resource allocation informations of the UE that institute will serve, sub-district need real-time feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feed back thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).
After the target cooperation cell is received the cooperation cell request message, determine whether to be ready,, then carry out resource allocation and respond cooperation and accept message, carry out feedback information according to feedback request afterwards according to the information of UE if be ready as auxilliary sub-district.
If the target cooperation cell is responded refuse information for some reason, then this sub-district of deletion is concentrated from cooperation cell in the target main plot.
Selectively, target main plot notice UE cooperation cell collection changes.
After confirming final objective cooperation cell collection; The switching cell request message is sent to the sub-district that the target switching cell is concentrated in the target main plot, includes but not limited to following information in the message: request feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feedback thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).
The response switching cell was accepted message after the target switching cell was received the switching cell request message, carried out feedback information according to feedback request afterwards.
Ring message if the sub-district, opposite end is responded refusal for some reason, then this sub-district of deletion is concentrated from switching cell in the target main plot.
Selectively, target main plot notice UE switching cell collection changes.
In order to further specify the present invention, be elaborated below in conjunction with accompanying drawing and embodiment.
At first introduce several notions: cooperation (transmission) cell set, main plot, auxilliary (helping) sub-district, the switching cell collection, shown in accompanying drawing 2:
Cooperation cell collection: the CoMP collection of cooperating is used for the set of cells to same UE service, like the sub-district in the accompanying drawing 21,2,3.
The main plot: the sub-district that cooperation cell is concentrated, carry out the uniform dispatching that cooperation cell is concentrated all local resources, and have Signalling exchange, like the sub-district in the accompanying drawing 21 with UE.
Auxilliary sub-district: the sub-district that cooperation cell is concentrated, assisting the main plot is the UE service, like the sub-district in the accompanying drawing 22,3.
The switching cell collection: the sub-district in this set is satisfied but is not limited to following condition: belong to the adjacent area that cooperation cell is concentrated each sub-district; Its signal strength signal intensity will be higher than the first preset thresholding; Cell load will be lower than preset second threshold (selectively; Second thresholding changes according to the resource operating position of UE in real time or periodically, and correspondingly the switching cell collection also changes in real time or periodically).The main plot has the information on load of these sub-districts.The switching cell collection can be determined by UE, main plot, auxilliary sub-district jointly.Like the sub-district in the accompanying drawing 25,6,7,8,10,12.And in the accompanying drawing 2 sub-district 9,11,14 respectively because signal strength signal intensity is not enough, load is heavier or other reasons (like, switching cell collection number restriction) can't belong to the switching cell collection.
Embodiment 1: the choosing of target main plot
Shown in accompanying drawing 3, the measurement report that UE sends is received in the main plot, source, and the sub-district of carrying in the report has: sub-district 5, sub-district 6, sub-district 7 and sub-district 16.Because sub-district 5,6,7 belongs to source switching cell collection, therefore preferentially be used as the candidate cell of target main plot.Again because sub-district 6,7 and main plot, source 1 belong to same eNodeB, therefore will from sub-district 6 and sub-district 7, select one to load less as the target main plot.
Embodiment 2: the choosing of target main plot
Shown in accompanying drawing 4, the measurement report that UE sends is received in the main plot, source, and the sub-district of carrying in the report has: sub-district 4, sub-district 13 and sub-district 14, these three sub-districts all belong to other sub-districts.Owing to have only sub-district 4 and main plot, source 1 to belong to same eNodeB, therefore preferentially be chosen as the target main plot.
Embodiment 3: the switching mode of directly choosing the target side cell set in the switching
Shown in accompanying drawing 5; After the target main plot is chosen in the main plot, source; Send handoff request message to the target main plot, include but not limited to the information of other sub-districts in wireless access capability information, access layer configuration and radio-resource-configuration, source cooperation cell collection information, source switching cell collection information and the measurement report of security information, UE of service bearer information, switching type, switch reasons, the UE of following information: UE in the message.
After handoff request message is received in the target main plot; For being about to switch the UE Resources allocation of coming; And according to the information of other sub-districts in source cooperation cell collection information, source switching cell collection information and the measurement report in the handoff request message; Take all factors into consideration the signal strength signal intensity, load, path loss of these sub-districts and choose target cooperation cell collection, consider that then the cooperation of these sub-districts and target concentrates the annexation of sub-district to choose target switching cell collection with target main plot annexation.
The cooperation cell request message is sent to the sub-district that the target cooperation cell is concentrated in the target main plot, includes but not limited to following information in the message: whole resource allocation informations of the UE that institute will serve, sub-district need real-time feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feed back thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).
After the target cooperation cell is received the cooperation cell request message, determine whether to be ready,, then carry out resource allocation and respond cooperation cell and accept message, carry out feedback information according to feedback request afterwards according to the information of UE if be ready as auxilliary sub-district.
After confirming final objective cooperation cell collection; Screen the sub-district of again the target switching cell being concentrated; The switching cell request message is sent to the sub-district that the target switching cell is concentrated in the target main plot then, includes but not limited to following information in the message: request feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feedback thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).
The response switching cell was accepted message after the target switching cell was received the switching cell request message, carried out feedback information according to feedback request afterwards.
The target main plot is sent switching response message and is given the main plot, source.Include but not limited to following information in the message: admit successfully with UE service bearer information, new measurement configuration, the target main plot of admitting failure be UE C-RNTI (Cell-Radio Network Temporary Identifier, the Radio Network Temporary Identifier that the sub-district is relevant), the random access channel resource information and the safe relevant configuration of distributing and to carry the target main plot be target cooperation cell collection and the target switching cell collection information that UE chooses.
After switching response message is received in the main plot, source; Issue reallocation message and give UE; Include but not limited to following information in the message: the DRB that the target main plot has been set up (Data Radio Bearer; Data Radio Bearer) and SRB (Signal Radio Bearer; Signaling Radio Bearer) information, new measurement configuration, target main plot are C-RNTI, random access channel resource information and the safe relevant configuration that UE distributes, and to carry the target main plot be target cooperation cell collection and the target switching cell collection information that UE chooses.
After UE received reallocation message, DRB information and the comparison of the DRB information in the reallocation message with this locality discharged unnecessary DRB.Be synchronized to the target main plot then and initiate to insert at random to the target main plot, inserts successfully at random after, UE transmission reprovision completion message is to the target main plot.So far, the UE handover success, and carry out the transmission of data with up-to-date cooperation cell collection.
Embodiment 4: the switching mode of choosing the target side cell set in the switching through measurement
Shown in accompanying drawing 6; After the target main plot is chosen in the main plot, source; Send handoff request message to the target main plot, include but not limited to the information of other sub-districts in wireless access capability information, access layer configuration and radio-resource-configuration, source cooperation cell collection information, source switching cell collection information and the measurement report of security information, UE of service bearer information, switching type, switch reasons, the UE of following information: UE in the message.
After handoff request message is received in the target main plot; For being about to switch the UE Resources allocation of coming; And, confirm the sub-district and the measurement contents that need UE to measure according to the information of other sub-districts in source cooperation cell collection information, source switching cell collection information and the measurement report in the handoff request message.
The target main plot is sent switching response message and is given the main plot, source.Include but not limited to following information in the message: admitting is C-RNTI (the Cell-Radio Network Temporary Identifier that UE distributes with UE service bearer information, new measurement configuration, the target main plot of admitting failure successfully; The Radio Network Temporary Identifier that the sub-district is relevant), random access channel resource information and safe relevant configuration, and carry sub-district and the measurement contents that needs UE to measure.
After switching response message is received in the main plot, source; Issue reallocation message and give UE; Include but not limited to following information in the message: the DRB that the target main plot has been set up (Data Radio Bearer; Data Radio Bearer) and SRB (Signal Radio Bearer, Signaling Radio Bearer) information, new measurement configuration, target main plot be C-RNTI, random access channel resource information and the safe relevant configuration that UE distributes, and carry sub-district and the measurement contents that needs UE to measure.
After UE received reallocation message, DRB information and the comparison of the DRB information in the reallocation message with this locality discharged unnecessary DRB.Be synchronized to the target main plot then and initiate to insert at random to the target main plot, inserts successfully at random after, UE transmission reprovision completion message is to the target main plot.So far, the UE handover success, but can only carry out the transmission of data with the target main plot this moment.
UE carries out measurement and gives the target main plot with the channel status reporting measuring result.The target main plot is according to the measurement result that reports; Take all factors into consideration the signal strength signal intensity, load, path loss of these sub-districts and choose target cooperation cell collection, consider that then the cooperation of these sub-districts and target concentrates the annexation of sub-district to choose target switching cell collection with target main plot annexation.
Cooperation cell collection request message is sent to the sub-district that the target cooperation cell is concentrated in the target main plot, includes but not limited to following information in the message: whole resource allocation informations of the UE that institute will serve, sub-district need real-time feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feed back thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).After the target cooperation cell is received the cooperation request message, determine whether to be ready,, then carry out resource allocation and respond cooperation and accept message, carry out feedback information according to feedback request afterwards according to the information of UE if be ready as auxilliary sub-district.The target main plot changes through reallocation message notice UE cooperation cell collection, and UE returns reprovision and accomplishes message to the target main plot.So far, UE carries out the transmission of data with up-to-date cooperation cell collection.
After confirming final objective cooperation cell collection; Screen the sub-district of again the target switching cell being concentrated; The switching cell request message is sent to the sub-district that the target switching cell is concentrated in the target main plot then, includes but not limited to following information in the message: request feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feedback thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).The response switching cell was accepted message after the target switching cell was received the switching cell request message, carried out feedback information according to feedback request afterwards.The target main plot changes through reallocation message notice UE switching cell collection.UE returns reprovision and accomplishes message to the target main plot.
Embodiment 5: the switching mode of directly choosing the target side cell set after the switching
Shown in accompanying drawing 7; After the target main plot is chosen in the main plot, source; Send handoff request message to the target main plot, include but not limited to the information of other sub-districts in wireless access capability information, access layer configuration and radio-resource-configuration, source cooperation cell collection information, source switching cell collection information and the measurement report of security information, UE of service bearer information, switching type, switch reasons, the UE of following information: UE in the message.
After handoff request message is received in the target main plot, for being about to switch the UE Resources allocation of coming.Send switching response message then and give the main plot, source.Include but not limited to following information in the message: admitting is C-RNTI (Cell-Radio Network Temporary Identifier, the Radio Network Temporary Identifier that the sub-district is relevant), random access channel resource information and the safe relevant configuration that UE distributes with UE service bearer information, new measurement configuration, the target main plot of admitting failure successfully.
After switching response message is received in the main plot, source; Issue reallocation message and give UE; Include but not limited to following information in the message: the DRB that the target main plot has been set up (Data Radio Bearer; Data Radio Bearer) and SRB (Signal Radio Bearer, Signaling Radio Bearer) information, new measurement configuration, target main plot be C-RNTI, random access channel resource information and the safe relevant configuration that UE distributes.
After UE received reallocation message, DRB information and the comparison of the DRB information in the reallocation message with this locality discharged unnecessary DRB.Be synchronized to the target main plot then and initiate to insert at random to the target main plot, inserts successfully at random after, UE transmission reprovision completion message is to the target main plot.So far, the UE handover success, but can only carry out the transmission of data with the target main plot this moment.
At this moment; The information of other sub-districts in source cooperation cell collection information, source switching cell collection information and the measurement report before the basis of main plot in the handoff request message; Take all factors into consideration the signal strength signal intensity, load, path loss of these sub-districts and choose target cooperation cell collection, consider that then the cooperation of these sub-districts and target concentrates the annexation of sub-district to choose target switching cell collection with target main plot annexation.
Cooperation cell collection request message is sent to the sub-district that the target cooperation cell is concentrated in the target main plot, includes but not limited to following information in the message: whole resource allocation informations of the UE that institute will serve, sub-district need real-time feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feed back thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).
After the target cooperation cell is received the cooperation request message, determine whether to be ready,, then carry out resource allocation and respond cooperation and accept message, carry out feedback information according to feedback request afterwards according to the information of UE if be ready as auxilliary sub-district.Target main plot notice UE cooperation cell collection changes.So far, UE carries out the transmission of data with up-to-date cooperation cell collection.
After confirming final objective cooperation cell collection; Screen the sub-district of again the target switching cell being concentrated; The switching cell request message is sent to the sub-district that the target switching cell is concentrated in the target main plot then, includes but not limited to following information in the message: request feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feedback thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).
The response switching cell was accepted message after the target switching cell was received the switching cell request message, carried out feedback information according to feedback request afterwards.Target main plot notice UE switching cell collection changes.
Embodiment 6: switch the target side cell set is chosen in the back through measurement switching mode
Shown in accompanying drawing 8; After the target main plot is chosen in the main plot, source; Send handoff request message to the target main plot, include but not limited to the information of other sub-districts in wireless access capability information, access layer configuration and radio-resource-configuration, source cooperation cell collection information, source switching cell collection information and the measurement report of security information, UE of service bearer information, switching type, switch reasons, the UE of following information: UE in the message.
After handoff request message is received in the target main plot, for being about to switch the UE Resources allocation of coming.Send switching response message then and give the main plot, source.Include but not limited to following information in the message: admitting is C-RNTI (Cell-Radio Network Temporary Identifier, the Radio Network Temporary Identifier that the sub-district is relevant), random access channel resource information and the safe relevant configuration that UE distributes with UE service bearer information, new measurement configuration, the target main plot of admitting failure successfully.
After switching response message is received in the main plot, source; Issue reallocation message and give UE; Include but not limited to following information in the message: the DRB that the target main plot has been set up (Data Radio Bearer; Data Radio Bearer) and SRB (Signal Radio Bearer, Signaling Radio Bearer) information, new measurement configuration, target main plot be C-RNTI, random access channel resource information and the safe relevant configuration that UE distributes.
After UE received reallocation message, DRB information and the comparison of the DRB information in the reallocation message with this locality discharged unnecessary DRB.Be synchronized to the target main plot then and initiate to insert at random to the target main plot, inserts successfully at random after, UE transmission reprovision completion message is to the target main plot.So far, the UE handover success, but can only carry out the transmission of data with the target main plot this moment.
At this moment, the information of other sub-districts is confirmed the sub-district and the measurement contents that need UE to measure in source cooperation cell collection information, source switching cell collection information and the measurement report before the basis of target main plot in the handoff request message.Issue reallocation message then and give UE, require UE that the channel conditions of designated cell is measured, measurement contents includes but not limited to RSRP, RSRQ, SINR, CQI, path loss etc.After UE receives reallocation message, carry out measurement and give the target main plot the channel status reporting measuring result.The target main plot is according to the measurement result that reports; Take all factors into consideration the signal strength signal intensity, load, path loss of these sub-districts and choose target cooperation cell collection, consider that then the cooperation of these sub-districts and target concentrates the annexation of sub-district to choose target switching cell collection with target main plot annexation.
Cooperation cell collection request message is sent to the sub-district that the target cooperation cell is concentrated in the target main plot, includes but not limited to following information in the message: whole resource allocation informations of the UE that institute will serve, sub-district need real-time feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feed back thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).After the target cooperation cell is received the cooperation request message, determine whether to be ready,, then carry out resource allocation and respond cooperation and accept message, carry out feedback information according to feedback request afterwards according to the information of UE if be ready as auxilliary sub-district.Target main plot notice UE cooperation cell collection changes.So far, UE carries out the transmission of data with up-to-date cooperation cell collection.
After confirming final objective cooperation cell collection; Screen the sub-district of again the target switching cell being concentrated; The switching cell request message is sent to the sub-district that the target switching cell is concentrated in the target main plot then, includes but not limited to following information in the message: request feedack type (as: Radio Resource behaviour in service, cable resource behaviour in service), type of feedback (feedback, periodic feedback in real time), feedback thresholding (can select when feeding back in real time), feedback cycle (periodic feedback).The response switching cell was accepted message after the target switching cell was received the switching cell request message, carried out feedback information according to feedback request afterwards.Target main plot notice UE switching cell collection changes.
Embodiment 7: the choosing of target cooperation cell and target switching cell
Shown in accompanying drawing 9, when belonging to source switching cell collection for the target main plot, target cooperation cell of finally choosing and target switching cell.Wherein sub-district 6 is the target main plot, and sub-district 1 (main plot, source), 5 is target secondary sub-district (sub-district that the source switching cell is concentrated); Sub-district 4,7,15,16,17 ownership target switching cell collection.Though sub-district 2,3,14 is the adjacent area of the concentrated sub-district of target cooperation cell, can't belong to target switching cell collection because signal strength signal intensity is not enough, though sub-district 18 signal strength conditions satisfy, it is heavier to load, and also can't belong to target switching cell collection.
Shown in accompanying drawing 10, when belonging to other sub-districts for the target main plot, target cooperation cell of finally choosing and target switching cell.Wherein sub-district 4 is the target main plot, and sub-district 1 (main plot, source), 3 (sub-district is assisted in the source) are the target secondary sub-district; Sub-district 2 (sub-district is assisted in the source), 5,12,14 ownership target switching cell collection.Though sub-district 6,7,10,11 is the adjacent area of the concentrated sub-district of target cooperation cell, can't belong to the switching cell collection because signal strength signal intensity is not enough, though sub-district 13 signal strength conditions satisfy, it is heavier to load, and also can't belong to target switching cell collection.
The present invention also provides a kind of switched system based on multipoint cooperative, comprises main plot, source and target main plot, wherein:
Main plot, said source is used for, receive the measurement report of terminal to report after, confirm the target main plot, send handoff request message to said target main plot;
Said target main plot is used for; After receiving said handoff request message; Be said terminal distribution resource, before said terminal switches to said target main plot or after said terminal switches to said target main plot, confirm target cooperation cell collection and target switching cell collection.
Wherein, main plot, said source comprises that the target main plot confirms the unit:
Said target main plot confirms that the unit is used for: in one type of the highest sub-district of sub-district medium priority that said measurement report carries, choose a sub-district as said target main plot, wherein, the priority principle is:
The priority of priority＞other sub-districts of the sub-district that the source switching cell is concentrated, and priority＞place, the sub-district eNodeB that belongs to the sub-district of same enode b (eNodeB) with the main plot, source and main plot, source belong to the priority that there are priority＞other sub-districts of the sub-district that the X2 mouth is connected in eNodeB.
Said target main plot confirms that the unit is to be used for: if one type of the highest sub-district of sub-district medium priority that said measurement report carries belongs to source switching cell collection, then therefrom choose the minimum sub-district of load as said target main plot; If one type of the highest sub-district of sub-district medium priority of carrying in the said measurement report does not belong to source switching cell collection, then therefrom sub-district of picked at random as said target main plot.
Wherein, said target main plot comprises and chooses the unit:
The said unit of choosing is used for: choose target cooperation cell collection; Each target cooperation cell to the target cooperation cell of choosing is concentrated is sent the cooperation cell request message; When receiving the refuse information of said target cooperation cell; Said target cooperation cell is concentrated deletion from said target cooperation cell, obtain final objective cooperation cell collection; And,
Choose target switching cell collection; Each target switching cell of concentrating to the target switching cell sends the switching cell request message; When receiving the refuse information of said target switching cell; Said target switching cell is concentrated deletion from said target switching cell, obtain final objective switching cell collection.
Said other cell informations of choosing in the measurement report that the unit is the source cooperation cell collection information, source switching cell collection information and the terminal to report that are used for carrying according to said handoff request message are chosen target cooperation cell collection and target cooperation cell collection.
Said target main plot also comprises the measurement triggering unit, wherein:
Said measurement triggering unit is used for: other cell informations are confirmed sub-district and the measurement contents that needs are measured in the measurement report of source cooperation cell collection information, source switching cell collection information and the terminal to report that carries according to said handoff request message; Said sub-district and the measurement contents that needs to measure sent to the main plot, source through handoff response information, send said terminal through reallocation message by the main plot, source; The sub-district that perhaps directly will measure and measurement contents send to said terminal;
The said unit of choosing is used to receive said terminal and switches to the channel conditions measurement result that reports behind the said target main plot, chooses target cooperation cell collection and target switching cell collection according to said channel conditions measurement result.
Wherein, said when choosing the unit and also being used to choose target cooperation cell collection, with reference to the annexation of sub-district to be selected, when choosing target switching cell collection, with reference to the annexation of the concentrated sub-district of sub-district to be selected and target cooperation cell with the target main plot.
Wherein, said target main plot also is used for: through the main plot, source said target cooperation cell collection information and target switching cell collection information are sent to said terminal; Perhaps, directly said target cooperation cell collection information and target switching cell collection information are sent to said terminal.
Claims (16)
1. the changing method based on multipoint cooperative is characterized in that, comprising:
After the measurement report of terminal to report is received in the main plot, source, confirm the target main plot, send handoff request message to said target main plot;
Said target main plot is after receiving said handoff request message; Be said terminal distribution resource; Before said terminal switches to said target main plot or after said terminal switches to said target main plot, confirm target cooperation cell collection and target switching cell collection.
2. the method for claim 1; It is characterized in that; Main plot, said source is confirmed the target main plot as follows: the sub-district medium priority that carry from said measurement report said cell-of-origin selects a sub-district as the target main plot in the highest one type of sub-district, and wherein, the priority principle is:
The priority of priority＞other sub-districts of the sub-district that the source switching cell is concentrated, and priority＞place, the sub-district eNodeB that belongs to the sub-district of same enode b (eNodeB) with the main plot, source and main plot, source belong to the priority that there are priority＞other sub-districts of the sub-district that the X2 mouth is connected in eNodeB.
3. method as claimed in claim 2 is characterized in that, if one type of the highest sub-district of sub-district medium priority of carrying in the said measurement report belongs to source switching cell collection, then therefrom chooses the minimum sub-district of load as the target main plot; If one type of the highest sub-district of sub-district medium priority of carrying in the said measurement report does not belong to source switching cell collection, then therefrom sub-district of picked at random as the target main plot.
4. the method for claim 1 is characterized in that, said target main plot confirms that target cooperation cell collection and target switching cell collection comprise:
Target cooperation cell collection is chosen in said target main plot; Each target cooperation cell to the target cooperation cell is concentrated is sent the cooperation cell request message; When receiving the refuse information of said target cooperation cell; Said target cooperation cell is concentrated deletion from said target cooperation cell, obtain final objective cooperation cell collection;
Target switching cell collection is chosen in said target main plot; Each target switching cell of concentrating to the target switching cell sends the switching cell request message; When receiving the refuse information of said target switching cell; Said target switching cell is concentrated deletion from said target switching cell, obtain final objective switching cell collection.
5. method as claimed in claim 4 is characterized in that, target cooperation cell collection and target switching cell collection are chosen according to following mode in said target main plot:
Target cooperation cell collection and target switching cell collection are chosen according to other cell informations in the measurement report of the source cooperation cell collection information, source switching cell collection information and the terminal to report that carry in the said handoff request message in said target main plot.
6. method as claimed in claim 4 is characterized in that, target cooperation cell collection and target switching cell collection are chosen according to following mode in said target main plot:
Sub-district and the measurement contents that needs are measured confirmed according to other cell informations in the measurement report of the source cooperation cell collection information, source switching cell collection information and the terminal to report that carry in the said handoff request message in said target main plot; Said sub-district and the measurement contents that needs to measure sent to the main plot, source through switching response message, send said terminal through reallocation message by main plot, said source; Perhaps directly said sub-district and the measurement contents that needs to measure sent to said terminal;
Said target main plot receives said terminal and switches to the channel conditions measurement result that reports behind the said target main plot, chooses target cooperation cell collection and target switching cell collection according to said channel conditions measurement result.
7. like claim 5 or 6 described methods; It is characterized in that, when choosing target cooperation cell collection, go back annexation with reference to sub-district to be selected and said target main plot; When choosing target switching cell collection, go back the annexation of the concentrated sub-district of reference sub-district to be selected and said target cooperation cell.
8. like the arbitrary described method of claim 1 to 6, it is characterized in that said method also comprises: said target main plot also sends to said terminal through the main plot, source with said target cooperation cell collection information and target switching cell collection information; Perhaps, directly said target cooperation cell collection information and target switching cell collection information are sent to said terminal.
9. the switched system based on multipoint cooperative is characterized in that, comprises main plot, source and target main plot, wherein:
Main plot, said source is used for, receive the measurement report of terminal to report after, confirm the target main plot, send handoff request message to said target main plot;
Said target main plot is used for; After receiving said handoff request message; Be said terminal distribution resource, before said terminal switches to said target main plot or after said terminal switches to said target main plot, confirm target cooperation cell collection and target switching cell collection.
10. system as claimed in claim 9 is characterized in that, main plot, said source comprises that the target main plot confirms the unit:
Said target main plot confirms that the unit is used for: in one type of the highest sub-district of sub-district medium priority that said measurement report carries, choose a sub-district as said target main plot, wherein, the priority principle is:
The priority of priority＞other sub-districts of the sub-district that the source switching cell is concentrated, and priority＞place, the sub-district eNodeB that belongs to the sub-district of same enode b (eNodeB) with the main plot, source and main plot, source belong to the priority that there are priority＞other sub-districts of the sub-district that the X2 mouth is connected in eNodeB.
11. system as claimed in claim 10; It is characterized in that; Said target main plot confirms that the unit is to be used for: if one type of the highest sub-district of sub-district medium priority that said measurement report carries belongs to source switching cell collection, then therefrom choose the minimum sub-district of load as said target main plot; If one type of the highest sub-district of sub-district medium priority of carrying in the said measurement report does not belong to source switching cell collection, then therefrom sub-district of picked at random as said target main plot.
12. system as claimed in claim 9 is characterized in that, said target main plot comprises chooses the unit:
The said unit of choosing is used for: choose target cooperation cell collection; Each target cooperation cell to the target cooperation cell of choosing is concentrated is sent the cooperation cell request message; When receiving the refuse information of said target cooperation cell; Said target cooperation cell is concentrated deletion from said target cooperation cell, obtain final objective cooperation cell collection; And,
Choose target switching cell collection; Each target switching cell of concentrating to the target switching cell sends the switching cell request message; When receiving the refuse information of said target switching cell; Said target switching cell is concentrated deletion from said target switching cell, obtain final objective switching cell collection.
13. system as claimed in claim 12 is characterized in that,
Said other cell informations of choosing in the measurement report that the unit is the source cooperation cell collection information, source switching cell collection information and the terminal to report that are used for carrying according to said handoff request message are chosen target cooperation cell collection and target cooperation cell collection.
14. system as claimed in claim 12 is characterized in that, said target main plot also comprises the measurement triggering unit, wherein:
Said measurement triggering unit is used for: other cell informations are confirmed sub-district and the measurement contents that needs are measured in the measurement report of source cooperation cell collection information, source switching cell collection information and the terminal to report that carries according to said handoff request message; Said sub-district and the measurement contents that needs to measure sent to the main plot, source through handoff response information, send said terminal through reallocation message by the main plot, source; The sub-district that perhaps directly will measure and measurement contents send to said terminal;
The said unit of choosing is used to receive said terminal and switches to the channel conditions measurement result that reports behind the said target main plot, chooses target cooperation cell collection and target switching cell collection according to said channel conditions measurement result.
15. like claim 13 or 14 described systems; It is characterized in that; Said when choosing the unit and also being used to choose target cooperation cell collection; With reference to the annexation of sub-district to be selected and target main plot, when choosing target switching cell collection, the annexation of the sub-district that reference sub-district to be selected and target cooperation cell are concentrated.
16., it is characterized in that said target main plot also is used for like the arbitrary described system of claim 9 to 14: said target cooperation cell collection information and target switching cell collection information are sent to said terminal through the main plot, source; Perhaps, directly said target cooperation cell collection information and target switching cell collection information are sent to said terminal.
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| PCT/CN2011/082919 WO2012092799A1 (en) | 2011-01-06 | 2011-11-25 | Handover method and system based on coordinated multi-point |
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| WO2014110951A1 (en) * | 2013-01-18 | 2014-07-24 | 华为技术有限公司 | Handoff method, source communication node and target communication node |
| WO2015007209A1 (en) * | 2013-07-16 | 2015-01-22 | 电信科学技术研究院 | Method and device for coordinating multi-point transmission control during cell switching |
| WO2014166458A1 (en) * | 2013-07-17 | 2014-10-16 | 中兴通讯股份有限公司 | Switching method, device, base station, system and computer storage medium |
| CN105991255A (en) * | 2015-01-28 | 2016-10-05 | 中国移动通信集团广东有限公司 | Carrier aggregation configuration method and device |
| CN105991255B (en) * | 2015-01-28 | 2019-04-23 | 中国移动通信集团广东有限公司 | A kind of configuration method and device of carrier wave polymerization |
| WO2017166293A1 (en) * | 2016-04-01 | 2017-10-05 | 华为技术有限公司 | Mobility management method, device and system |
| US10721658B2 (en) | 2016-04-01 | 2020-07-21 | Huawei Technologies Co., Ltd. | Mobility management method, apparatus, and system |
| CN112868253A (en) * | 2019-02-14 | 2021-05-28 | Oppo广东移动通信有限公司 | Condition-triggered configuration method and related product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102595529B (en) | 2014-12-10 |
| WO2012092799A1 (en) | 2012-07-12 |
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