CN102651879A - Method for selecting cooperative cells based on UE intelligent association and cooperative user equipment - Google Patents
Method for selecting cooperative cells based on UE intelligent association and cooperative user equipment Download PDFInfo
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- CN102651879A CN102651879A CN2011100479065A CN201110047906A CN102651879A CN 102651879 A CN102651879 A CN 102651879A CN 2011100479065 A CN2011100479065 A CN 2011100479065A CN 201110047906 A CN201110047906 A CN 201110047906A CN 102651879 A CN102651879 A CN 102651879A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
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Abstract
The invention relates to a method for selecting cooperative cells based on UE intelligent association and cooperative user equipment. The method comprises the steps as follows: as cooperative user equipment, receiving load state information of all adjacent cells of a serving cell and supportable service information of the adjacent cells that are collected and delivered through a broadcast message by the serving cell; performing priority queuing on the adjacent cells according to the load state information and the supportable service information, and selecting a cooperative cell set according to the queuing information; and reporting information about the cooperative cell set to a base station. The method and the equipment improve the efficiency of selecting cooperative cells and reduce information exchange between the UE and the network, thereby achieving the purpose of increasing system throughput.
Description
Technical field
The present invention relates to communication technical field, specifically be based on UE (subscriber equipment) intelligent association selecting collaboration sub-district method and collaboration user equipment.
Background technology
In existing GSM; Presence of intercell interference is the main cause that influences the edge throughput, and to LTE (Long Term Evolution) system, it is outstanding that the interference of minizone shows especially; Along with ITU (International Telecommunications Union) is the performance index that IMT-Advanced (senior international mobile communication) system proposes; The LTE-Advanced technology that 3GPP (3G (Third Generation) Moblie partner program) proposes, solving area interference becomes heat subject, and (the Cooperative Multi-Point that in LTE-Advanced, introduces COMP; Multipoint cooperative) technology improves user's received signal quality and has milestone significance for reducing neighbor cell interference.The COMP principle is to make between different base station, to disturb through associated treatment, perhaps avoids interference, and perhaps interference is converted into useful signal; From disturbing the angle of handling can COMP be divided into two types: one type is to carry out rational precoding through base station end to make signal spatially be spaced from each other; Perhaps through coordinated scheduling, let different districts avoid dispatching the user on the same direction at one time, thereby the same frequency that reduces the minizone disturb as far as possible; Guarantee user's link-quality; Improve demodulation performance, this technology be called cooperative scheduling/collaborative wave beam forming (Coordinate Schedule/Beamforming, CS/CB); Other one type is the useful signal that is converted into this community user through the interference signal with other sub-districts, recently guarantees demodulation performance through the noise that promotes the user, this technology promptly be called Combined Treatment (Joint Processing, JP).
In the COMP technology; Cooperation can provide very big cell edge and average cell throughout between all transmission points; But shared data/CSI between all transmission points is (Channel StateIndicator; Channel condition information) need very high passback capacity, complexity is too high-leveled and difficult in realization.For reducing complexity, cooperation can only be specific UE service between a limited number of transmission point.Therefore; Need to confirm cooperation cell set of which transmission point composition and what principle to form this cooperation cell set according to, it is under the prerequisite of an acceptable scheduling complexity and passback capacity, to maximize cell throughout that the design cooperation cell is gathered target.
After in LTE_A (senior Long Term Evolution), introducing the COMP transmission technology, choosing of cooperation cell then is the key point and the focus of research.Come for the method general idea of collaboration user selecting collaboration collection to network side at present to be: the interference source based on each UE is the strongest is decided.The UE that carries out COMP must measure and report that strong jamming gathers the Serving cell to oneself, selects the sub-district of suitable number to do the cooperation cell set according to certain threshold value., choose to the network side feedack according to the user, generally obtain the cooperation cell set according to RSRP (Reference Signal Receiving Power, Reference Signal Received Power) report or long-term CSI statistical information by network side.See that from the angle of scheduling this method is very complicated.On the other hand, COMP user need measure the channel conditions or the disturbed condition of many sub-districts on every side, and is bigger to the network side feedback quantity, and the network system expense is bigger, and complexity is than higher.
Summary of the invention
Main purpose of the present invention provides a kind of based on UE intelligent association selecting collaboration sub-district method and collaboration user equipment, improves the efficient of choosing of cooperation cell, reduces the information interaction of UE and network, improves the throughput of system purpose to reach.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of based on UE intelligent association selecting collaboration sub-district method, it comprises:
Collaboration user receives that Serving cell is collected and the load condition information and neighbor cell ability supporting business information of these all neighbor cells of Serving cell of issuing through broadcast;
Carry out priority queueing according to said load condition information and ability supporting business information to said neighbor cell, and according to said queueing message selecting collaboration cell set;
Report said cooperation cell collection information to the base station.
Preferably, said according to said load condition information with can supporting business information carry out priority queueing to said neighbor cell.Specifically comprise:
Collaboration user adopts the method for weighted sum to carry out the priority queueing of each neighbor cell according to said load condition information and ability supporting business information, forms first priority query.
Preferably, said formation first priority query afterwards, further comprises:
Collaboration user is measured all neighbor cells according to neighbor cell list; RSRP value and CSI value through said measurement result are assessed the channel quality of each neighbor cell; And adopt the method for weighted sum that each neighbor cell is carried out the queuing of channel quality according to said quality of channel, form second priority query.
Preferably, after said formation second priority query, further comprise:
Through the channel quality of said each neighbor cell, said load condition information and ability supporting business information; On the basis of said first priority query and said second priority query, carry out the method for identical PCI priority summation and once more individual neighbor cell is carried out priority queueing, form the 3rd priority query.
Preferably, saidly report said cooperation cell collection information, specifically comprise to the base station:
Report said cooperation cell collection information or report said cooperation cell collection information through newly-increased signaling through the measurement signaling in the signaling process.
Preferably, saidly report said cooperation cell collection information,, further comprise before to the base station:
Perhaps can need to upgrade the cooperation cell collection according to the type of service variation that UE chooses according to collaboration user to the change of cooperation cell number of sets and trigger the said process that reports said cooperation cell collection information to the base station.
A kind of collaboration user equipment, it comprises:
Information receiving unit is used to receive the load condition information and neighbor cell ability supporting business information of these all neighbor cells of Serving cell that Serving cell is collected and issue through broadcast;
The unit is chosen in queuing, is used for carrying out priority queueing to said neighbor cell according to said load condition information and ability supporting business information, and according to said queueing message selecting collaboration cell set;
The information reporting unit is used for reporting said cooperation cell collection information to the base station.
Preferably, the unit is chosen in said queuing, also comprises:
First formation forms subelement, is used for adopting the method for weighted sum to carry out the priority queueing of each neighbor cell according to said load condition information and ability supporting business information, forms first priority query.
Preferably; The unit is chosen in said queuing; Also comprise: second formation forms subelement, is used for according to neighbor cell list all neighbor cells being measured, and through the RSRP value and the CSI value of said measurement result the channel quality of each neighbor cell is assessed; And adopt the method for weighted sum that each neighbor cell is carried out the queuing of channel quality according to said quality of channel, form second priority query.
Preferably, the unit is chosen in said queuing, also comprises: the 3rd formation forms subelement,
Through the channel quality of said each neighbor cell, said load condition information and ability supporting business information; On the basis of said first priority query and said second priority query, carry out the method for identical PCI priority summation and once more individual neighbor cell is carried out priority queueing, form the 3rd priority query.
The technical scheme of embodiment of the present invention; Have following beneficial effect: provided by the invention based on load through neighbor cell of UE intelligent association selecting collaboration sub-district method and collaboration user equipment, can the supporting business ability and UE Serving cell signal quality information of living in carry out related, with the selecting collaboration sub-district; Can reduce the feedback quantity of UE to the cooperation cell channel quality; Reach the purpose that promotes throughput, also can reduce the cooperation cell number simultaneously, save available resources; Increase number of users, improve the economic benefit of operator.
Description of drawings
The method flow diagram that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the particular flow sheet of the step S120 of Fig. 1;
The device structure sketch map that Fig. 3 provides for the embodiment of the invention;
Fig. 4 chooses the structural representation of unit for the queuing of Fig. 3;
Fig. 5 confirms interaction figure for the initial cooperation cell set that the embodiment of the invention provides;
The cooperation cell set cell load that Fig. 6 provides for the embodiment of the invention changes renewal cooperation cell set interaction figure;
The collaboration user that Fig. 7 provides for the embodiment of the invention is chosen professional the change and is upgraded cooperation cell set interaction figure;
The collaboration user collaboration region mobile update cooperation cell set interaction figure that Fig. 8 provides for the embodiment of the invention;
The collaboration user that Fig. 9 provides for the embodiment of the invention shifts out the collaboration region and upgrades cooperation cell set interaction figure.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
It is a kind of based on UE intelligent association selecting collaboration sub-district method that the embodiment of the invention provides, and as shown in Figure 1, the method comprising the steps of:
S110, collaboration user receive that Serving cell is collected and the load condition information of these all neighbor cells of Serving cell of issuing through broadcast and neighbor cell can supporting business information;
In this step S110; Serving cell is collected the load condition information and the neighbor cell ability supporting business information of all neighbor cells; Serving cell sends to collaboration user with the business information that can support through broadcast with adjacent cell information of collecting and the information on load of oneself; Add load condition information in cell-AccessRelatedInfo (the sub-district access relevant information) information in LTE system information SIB1 (SystemInformation Block Type1, system information block 1) and distinguish corresponding weight coefficient field with ability supporting business type and both.Also need in Intra Freq Neigh Cell Info (homogeneous-frequency adjacent-domain information) information among the homogeneous-frequency adjacent-domain information SIB4 (System Information-BlockType4, system information block 4), increase load condition information and ability supporting business type two fields simultaneously.Issue still for the system broadcasts of COMP Serving cell and to be undertaken by the LTE standard.
S120, according to said load condition information and can supporting business information carry out priority queueing to said neighbor cell, and according to said queueing message selecting collaboration cell set;
In other embodiment, more concrete, said step S120, according to said load condition information and can supporting business information carry out priority queueing to said neighbor cell.As shown in Figure 2, specifically comprise:
S121, collaboration user adopt the method for weighted sum to carry out the priority queueing of each neighbor cell according to said load condition information and ability supporting business information, form first priority query.
In this step S121; After collaboration user parses the load and supporting business type information of each adjacent area; Collaboration user adopts the weighted sum method to carry out each priority of adjacent domain queuing, distinguishes for identifier with PCI (Phsyical CellIdentify, Physical Cell Identifier); The high person of priority comes the front, forms first priority query.Collaboration user gets up buffer memory elder generation of this first priority query buffer memory, a relevant parameter of choosing as follow-up collaboration user selecting collaboration sub-district.
In addition, further as shown in Figure 2 in other embodiment, saidly in step S121, form after first priority query, further comprise step:
S122, collaboration user are measured all neighbor cells according to neighbor cell list; RSRP value and CSI value through said measurement result are assessed the channel quality of each neighbor cell; And adopt the method for weighted sum that each neighbor cell is carried out the queuing of channel quality according to said quality of channel, form second priority query.
In this step S122; Collaboration user is measured all neighbor cells according to neighbor cell list; Measurement result RSRP value and CSI value are carried out each neighbor cell channel quality assess, can adopt the method for weighted sum to carry out the channel quality queuing of neighbor cell, the measured front that comes of matter; Form second priority query, can identify with PCI equally.
In addition, further as shown in Figure 2 in other embodiment, saidly in step S122, form after second priority query, further comprise step:
S123, channel quality, said load condition information and ability supporting business information through said each neighbor cell; On the basis of said first priority query and said second priority query, carry out the method for identical PCI priority summation and once more individual neighbor cell is carried out priority queueing, form the 3rd priority query.
For collaboration user; It has had each neighbor cell channel quality status information, also has each neighbor cell resource simultaneously and uses and information on load, but also have the traffic type information that each neighbor cell can be supported; To having these information; Utilize existing first priority query in front and second priority query to carry out the method for identical PCI priority summation, once more each neighbor cell is carried out priority queueing, the high person of priority comes the front; Form the 3rd priority query, use PCI to identify equally.At this moment, collaboration user can be confirmed the cooperation cell number in the SINR of Serving cell value according to own, and the SINR value is high more, and required cooperation cell is few more, and vice versa.
S130, report said cooperation cell collection information to the base station.
In this step S130, concrete, report said cooperation cell collection information or report said cooperation cell collection information through newly-increased signaling through the measurement signaling in the signaling process.
In addition; In the above-described embodiments; Further, according to collaboration user the cooperation cell number of sets is changed or can change according to the type of service that UE chooses need that renewal cooperation cell collection triggers step S130 report the process of said cooperation cell collection information to the base station.
The load of method provided by the invention through neighbor cell, can the supporting business ability and UE Serving cell signal quality information of living in carry out related, with the selecting collaboration sub-district; Can reduce the feedback quantity of UE to the cooperation cell channel quality; Reach the purpose that promotes throughput, also can reduce the cooperation cell number simultaneously, save available resources; Increase number of users, improve the economic benefit of operator.
The more concrete application implementation example of said method is provided below.
Application implementation example one:
Fig. 5 is that interaction figure is confirmed in initial cooperation cell set, and this process comprises step:
301, UE (subscriber equipment) initial access network; When the UE initial access network, the UE attribute is not also confirmed, does not just have the cooperation cell set this moment yet.
302, confirm collaboration user; When the attribute of UE is confirmed as collaboration user, just advance the cooperation cell set and choose.
303, Serving cell carries out information interaction through X2 mouth and neighbor cell, the information on load that obtains neighbor cell and the traffic type information that can support etc.
304, Serving cell is handed down to collaboration user with the adjacent cell information of collecting through system broadcast information;
305, the information on load behind collaboration user this broadcast message of parsing and the store queue;
After collaboration user parses the load and supporting business type information of each adjacent area, adopt the weighted sum method to carry out each priority of adjacent domain queuing, the high person of priority comes the front.
306, collaboration user is measured, and the channel quality of each sub-district of lining up;
Collaboration user is measured all neighbor cells according to neighbor cell list, measurement result RSRP value and CSI value is carried out each neighbor cell channel quality assess, and can adopt the method for weighted sum to carry out the queuing of cell signal quality, the measured front that comes of matter.
307, collaboration user selecting collaboration sub-district;
Collaboration user has each cell signal quality condition information; Also have simultaneously each local resource and use and information on load, but also have the traffic type information that each sub-district can be supported, to having these information; Can reuse the method for weighted sum; Once more priority queueing is carried out in each sub-district, the high person of priority comes the front, uses PCI to identify equally.At this moment, collaboration user can be confirmed the cooperation cell number in the SINR of Serving cell value according to own, and final cooperation cell set will be selected.
308, collaboration user reports the cooperation cell aggregate information;
Collaboration user is with the cooperation cell aggregate information of selecting, and through measurement report or newly-increased signaling Serving cell, which adjacent area Serving cell notifies become cooperation cell through the order of X2 message again.
309, Serving cell and neighbor cell carry out information interaction through the X2 mouth, and Serving cell can ask cooperation cell to remove to dispatch collaboration user.
Application implementation example two:
As shown in Figure 6, for changing, cooperation cell set cell load upgrades cooperation cell set interaction figure, and this process is: when cooperation cell is concentrated the traffic overload of certain sub-district in the cooperation cell, need to upgrade the cooperation cell set this moment.As: the #3 sub-district is former cooperation cell set sub-district; This cell load overload can not remake to cooperation cell and use this moment, and collaboration user needs receiving system information again; Again to of the method queuing of each adjacent area by above-mentioned application implementation example one; Upgrade the cooperation cell set according to queuing priority at last, upgrade back cooperation cell aggregated result and be: be source cooperation cell collection: #1 (expression is numbered: No. 1 cooperation cell, down with), #2, #3 be updated to new cooperation cell collection and be: #1, #2, #7.This process specifically comprises step:
401, Serving cell carries out information interaction through X2 mouth and neighbor cell, the information on load that obtains neighbor cell and the traffic type information that can support etc.
402, cooperation cell concentrates cell cooperative to change;
403, Serving cell is handed down to collaboration user with the adjacent cell information of collecting through system broadcast information;
404, the information on load behind collaboration user this broadcast message of parsing and the store queue;
After collaboration user parses the load and supporting business type information of each adjacent area, adopt the weighted sum method to carry out each priority of adjacent domain queuing, the high person of priority comes the front.
405, collaboration user is measured, and the channel quality of each sub-district of lining up;
Collaboration user is measured all neighbor cells according to neighbor cell list, measurement result RSRP value and CSI value is carried out each neighbor cell channel quality assess, and can adopt the method for weighted sum to carry out the queuing of cell signal quality, the measured front that comes of matter.
406, collaboration user selecting collaboration sub-district;
Collaboration user has each cell signal quality condition information; Also have simultaneously each local resource and use and information on load, but also have the traffic type information that each sub-district can be supported, to having these information; Can reuse the method for weighted sum; Once more priority queueing is carried out in each sub-district, the high person of priority comes the front, uses PCI to identify equally.At this moment, collaboration user can be confirmed the cooperation cell number in the SINR of Serving cell value according to own, and final cooperation cell set will be selected.
407, collaboration user reports the cooperation cell aggregate information;
Collaboration user is with the cooperation cell aggregate information of selecting, through measurement report or newly-increased signaling Serving cell.
408, Serving cell carries out the renewal of cooperation cell collection through X2 mouth and neighbor cell again.
409, Serving cell and neighbor cell carry out information interaction through the X2 mouth, and Serving cell can ask cooperation cell to remove to dispatch collaboration user.
Application implementation example three:
Fig. 7 chooses professional the change for collaboration user and upgrades cooperation cell set interaction figure; This process is: when the business of choosing when collaboration user changes; For example need special VIP professional and since cooperation cell concentrate some sub-district a variety of causes not support should business, or when should business resource requirement cooperation cell concentrating some sub-district not satisfy; Collaboration user need upgrade the cooperation cell set; This scene need be reselected the weighted value of type of service, and for example, type of service weights predefine is general service weights and particular service weights; By above-mentioned application implementation example one method selecting collaboration cell set again, this scheme more can be chosen the cooperation cell set of satisfying the collaboration user specific demand through collaboration user.The cooperation cell set needs to upgrade the result; As: source cooperation cell collection is: #1, #2, #3, and for some reason, #2, #3 can not satisfy the specific demand of this collaboration user new business; Institute's collaboration user needs selecting collaboration set of cells again, and the cooperation cell collection after the renewal is: #1, #4, #7.This process comprises step:
501, Serving cell carries out information interaction through X2 mouth and neighbor cell, the information on load that obtains neighbor cell and the traffic type information that can support etc.
502, Serving cell is handed down to collaboration user with the adjacent cell information of collecting through system broadcast information;
503, the information on load behind collaboration user this broadcast message of parsing and the store queue;
After collaboration user parses the load and supporting business type information of each adjacent area, adopt the weighted sum method to carry out each priority of adjacent domain queuing, the high person of priority comes the front.
504, collaboration user is measured, and the channel quality of each sub-district of lining up;
Collaboration user is measured all neighbor cells according to neighbor cell list, measurement result RSRP value and CSI value is carried out each neighbor cell channel quality assess, and can adopt the method for weighted sum to carry out the queuing of cell signal quality, the measured front that comes of matter.
505, collaboration user is chosen business and is changed, and revises the type of service weighted value all neighbor cells are requeued, and chooses new cooperation cell collection.
506, collaboration user reports the cooperation cell aggregate information;
Collaboration user is with the cooperation cell aggregate information of selecting, through measurement report or newly-increased signaling Serving cell.
507, Serving cell carries out the renewal of cooperation cell collection through X2 mouth and neighbor cell again.
508, Serving cell and neighbor cell carry out information interaction through the X2 mouth, and Serving cell can ask cooperation cell to remove to dispatch collaboration user.
Application implementation example four:
Fig. 8 is a collaboration user collaboration region mobile update cooperation cell set interaction figure; This process is: when collaboration user moves in the collaboration region; The measurement result of collaboration user will change thereupon moving; This SINR value with cell channel quality (RSRP and CSI) that initially inserts the definite cooperation cell set in back and collaboration user is complete different, needs this moment collaboration user to remeasure.According to up-to-date measurement result, by the method for application implementation example one selecting collaboration set of cells again, last collaboration user reports the cooperation cell aggregate information of renewal to give Serving cell.The result is upgraded in the cooperation cell set: #1, #2, #3 are updated to: the cooperation cell set behind the collaboration user mobile update is: #1, #2, #7.
This process specifically comprises:
601, Serving cell carries out information interaction through X2 mouth and neighbor cell, the information on load that obtains neighbor cell and the traffic type information that can support etc.
602, Serving cell is handed down to collaboration user with the adjacent cell information of collecting through system broadcast information;
603, the information on load behind collaboration user this broadcast message of parsing and the store queue;
After collaboration user parses the load and supporting business type information of each adjacent area, adopt the weighted sum method to carry out each priority of adjacent domain queuing, the high person of priority comes the front.
604, collaboration user moves in the collaboration region, and the RSRP of each adjacent area changes, and the SINR and the CSI of collaboration user change.
605, collaboration user remeasures, and the channel quality of each sub-district of lining up.
606, collaboration user selecting collaboration sub-district.
607, collaboration user reports the cooperation cell aggregate information;
Collaboration user is with the cooperation cell aggregate information of selecting, through measurement report or newly-increased signaling Serving cell.
608, Serving cell carries out the renewal of cooperation cell collection through X2 mouth and neighbor cell again.
609, Serving cell and neighbor cell carry out information interaction through the X2 mouth, and Serving cell can ask cooperation cell to remove to dispatch collaboration user.
Embodiment five:
Fig. 9 upgrades cooperation cell set interaction figure for collaboration user shifts out the collaboration region; This process is: when collaboration user moves on to the Serving cell central area from the collaboration region; Collaboration user need remeasure, and confirms oneself to have satisfied the central user standard according to the most recent measurements RSRP and the SINR value of Serving cell, if satisfy; Then delete cooperation cell collection information; Report simultaneously and give Serving cell, require service cell updating cooperation cell aggregate information, last this UE of Serving cell cancellation is a collaboration user.Because collaboration user shifts out collaboration region renewal cooperation cell collection sketch map: #1, #2, #3 are updated to: the cooperation cell set behind the collaboration user mobile update is: empty set.This process specifically comprises step:
701, Serving cell carries out information interaction through X2 mouth and neighbor cell, the information on load that obtains neighbor cell and the traffic type information that can support etc.
702, Serving cell is handed down to collaboration user with the adjacent cell information of collecting through system broadcast information;
703, the information on load behind collaboration user this broadcast message of parsing and the store queue.
After collaboration user parses the load and supporting business type information of each adjacent area, adopt the weighted sum method to carry out each priority of adjacent domain queuing, the high person of priority comes the front.
704, collaboration user moves into the Serving cell center by the collaboration region.
705, collaboration user remeasures, and confirms own to immigration Serving cell center, collaboration region according to the SINR value.
706, collaboration user deletion cooperation cell.
707, collaboration user reports the cooperation cell aggregate information;
Collaboration user is with the cooperation cell aggregate information of selecting, through measurement report or newly-increased signaling Serving cell.
708, Serving cell carries out the renewal (deletion cooperation cell information) of cooperation cell collection again through X2 mouth and neighbor cell.
709, cancellation collaboration user.
The embodiment of the invention also provides a kind of collaboration user equipment, and is as shown in Figure 3, comprising:
In other embodiment, more concrete, unit 220 is chosen in said queuing, and is as shown in Figure 4, also comprises:
First formation forms subelement 221, is used for adopting the method for weighted sum to carry out the priority queueing of each neighbor cell according to said load condition information and ability supporting business information, forms first priority query.
In other embodiment, further, unit 220 is chosen in said queuing; As shown in Figure 4; Also comprise: second formation forms subelement 222, is used for according to neighbor cell list all neighbor cells being measured, and through the RSRP value and the CSI value of said measurement result the channel quality of each neighbor cell is assessed; And adopt the method for weighted sum that each neighbor cell is carried out the queuing of channel quality according to said quality of channel, form second priority query.
The load of collaboration user equipment provided by the invention through neighbor cell, can the supporting business ability and UE Serving cell signal quality information of living in carry out related, with the selecting collaboration sub-district; Can reduce the feedback quantity of UE to the cooperation cell channel quality; Reach the purpose that promotes throughput, also can reduce the cooperation cell number simultaneously, save available resources; Increase number of users, improve the economic benefit of operator.
More than be merely preferred embodiment of the present invention,, all any modifications of within spirit of the present invention and principle, being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention not in order to restriction the present invention.
Claims (10)
1. one kind based on UE intelligent association selecting collaboration sub-district method, it is characterized in that, comprising:
Collaboration user receives that Serving cell is collected and the load condition information and neighbor cell ability supporting business information of these all neighbor cells of Serving cell of issuing through broadcast;
Carry out priority queueing according to said load condition information and ability supporting business information to said neighbor cell, and according to said queueing message selecting collaboration cell set;
Report said cooperation cell collection information to the base station.
2. method according to claim 1 is characterized in that, said according to said load condition information with can supporting business information carry out priority queueing to said neighbor cell.Specifically comprise:
Collaboration user adopts the method for weighted sum to carry out the priority queueing of each neighbor cell according to said load condition information and ability supporting business information, forms first priority query.
3. like the said method of claim 2, it is characterized in that said formation first priority query afterwards, further comprises:
Collaboration user is measured all neighbor cells according to neighbor cell list; RSRP value and CSI value through said measurement result are assessed the channel quality of each neighbor cell; And adopt the method for weighted sum that each neighbor cell is carried out the queuing of channel quality according to said quality of channel, form second priority query.
4. like the said method of claim 3, it is characterized in that, after said formation second priority query, further comprise:
Through the channel quality of said each neighbor cell, said load condition information and ability supporting business information; On the basis of said first priority query and said second priority query, carry out the method for identical PCI priority summation and once more individual neighbor cell is carried out priority queueing, form the 3rd priority query.
5. method according to claim 1 is characterized in that, saidly reports said cooperation cell collection information to the base station, specifically comprises:
Report said cooperation cell collection information or report said cooperation cell collection information through newly-increased signaling through the measurement signaling in the signaling process.
6. like the said method of claim 5, it is characterized in that, saidly report said cooperation cell collection information,, further comprise before to the base station:
Perhaps can need to upgrade the cooperation cell collection according to the type of service variation that UE chooses according to collaboration user to the change of cooperation cell number of sets and trigger the said process that reports said cooperation cell collection information to the base station.
7. a collaboration user equipment is characterized in that, comprising:
Information receiving unit is used to receive the load condition information and neighbor cell ability supporting business information of these all neighbor cells of Serving cell that Serving cell is collected and issue through broadcast;
The unit is chosen in queuing, is used for carrying out priority queueing to said neighbor cell according to said load condition information and ability supporting business information, and according to said queueing message selecting collaboration cell set;
The information reporting unit is used for reporting said cooperation cell collection information to the base station.
8. like the said collaboration user equipment of claim 7, it is characterized in that the unit is chosen in said queuing, also comprises:
First formation forms subelement, is used for adopting the method for weighted sum to carry out the priority queueing of each neighbor cell according to said load condition information and ability supporting business information, forms first priority query.
9. like the said collaboration user equipment of claim 8; It is characterized in that the unit is chosen in said queuing, also comprises: second formation forms subelement; Be used for all neighbor cells being measured according to neighbor cell list; RSRP value and CSI value through said measurement result are assessed the channel quality of each neighbor cell, and adopt the method for weighted sum that each neighbor cell is carried out the queuing of channel quality according to said quality of channel, form second priority query.
10. like the said collaboration user equipment of claim 9, it is characterized in that the unit is chosen in said queuing, also comprises: the 3rd formation forms subelement,
Through the channel quality of said each neighbor cell, said load condition information and ability supporting business information; On the basis of said first priority query and said second priority query, carry out the method for identical PCI priority summation and once more individual neighbor cell is carried out priority queueing, form the 3rd priority query.
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| CN201110047906.5A CN102651879B (en) | 2011-02-28 | 2011-02-28 | Method for selecting cooperative cells based on UE intelligent association and cooperative user equipment |
| PCT/CN2011/082490 WO2012116556A1 (en) | 2011-02-28 | 2011-11-18 | Method for selecting cooperative cells based on ue intelligent association and cooperative user equipment |
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| WO2012116556A1 (en) | 2012-09-07 |
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