CN101965060A - Method for coordinated multi-point transmission and reception and corresponding base station - Google Patents
Method for coordinated multi-point transmission and reception and corresponding base station Download PDFInfo
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- CN101965060A CN101965060A CN2009101596406A CN200910159640A CN101965060A CN 101965060 A CN101965060 A CN 101965060A CN 2009101596406 A CN2009101596406 A CN 2009101596406A CN 200910159640 A CN200910159640 A CN 200910159640A CN 101965060 A CN101965060 A CN 101965060A
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- 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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Abstract
The invention relates to a method for coordinated multi-point transmission and reception. The method comprises the following steps of: presetting a style set for coordinated multi-point transmission and reception on a base station; allocating a coordination base station group for each style in the style set, and correspondingly setting a selection condition, wherein the selection condition comprises a group of user terminal performance parameters and dereferencing requirements thereof; acquiring the dereferences of the user terminal performance parameters by a service base station for accessed user terminals to perform coordinated multi-point transmission and reception; selecting one style from the styles corresponding to the selection condition that the dereferences can meet; and performing coordinated multi-point transmission and reception on the user terminal by the coordination base station group allocated for the selected styles. Accordingly, the invention also provides the base station having the functions of coordinated multi-point transmission and reception. The base station comprises a coordinated multi-point module, a setting module and a selection module. The method and the base station can meet the performance requirements such as throughput, peak data rate and the like under different wireless communication environment conditions and effectively reduce system cost.
Description
Technical field
The present invention relates to cordless communication network, method and corresponding base station that particularly a kind of multipoint cooperative sends and receives.
Background technology
In the NGBW communication network, solve inter-cell user terminal (User Terminal, UT) throughput, average user terminal throughput, particularly the problem of the throughput of Cell Edge User terminal and peak rate is a The key factor, and is faced with formidable challenges.At present, (Collaborative Multiple Point, CoMP) method that sends and receive solves this problem all to propose to adopt multipoint cooperative in IEEE802.16j, IMT-Advanced, WINNER.
The basic conception that CoMP sends and receives is: on identical Radio Resource, the base station of a plurality of cooperations (Base Station, BS) and uniting between sole user's terminal send and receive.Two essential characteristics are arranged:
(1) each user terminal can be on identical Radio Resource by base station collaboration by a plurality of base stations united services, presence of intercell interference can be alleviated, or presence of intercell interference is changed into useful signal power;
(2) a plurality of user terminals can be served in each base station on identical Radio Resource, and all sector throughput are enhanced.
But, send and receive in the implementation process at CoMP, using identical resource in a plurality of base stations of cooperation is a subscriber terminal service, can cause the waste of resource; In having the up link of presence of intercell interference, when selecting simultaneously when the user terminal of cell edge carries out CoMP transmission and reception, may cause serious presence of intercell interference, and then cell edge throughput, peak rate and average cell throughout are significantly reduced.
Summary of the invention
The technical problem to be solved in the present invention provides method and the corresponding base station that a kind of multipoint cooperative sends and receives, and can choose suitable cooperative base station in conjunction with the performance requirement of user terminal.
In order to address the above problem, the invention provides the method that a kind of multipoint cooperative sends and receives, comprising:
Set in advance the pattern set that is used for the multipoint cooperative transmission and receives in the base station, for each style configuration one cooperative base station group and correspondence in this pattern set are provided with an alternative condition, described alternative condition comprises one group of user terminal performance parameter and value requirement thereof;
To carry out the user terminal that multipoint cooperative sends and receives to what insert, serving BS obtains the value of this user terminal performance parameter, select one style the pattern of the alternative condition correspondence that can satisfy from described value, the multipoint cooperative that carries out this user terminal by the cooperative base station group of the style configuration selected for this sends and receives.
Further, said method also has following characteristics:
For being provided with an alternative condition, each pattern correspondence finishes in the following manner:
Pattern in the pattern set is divided into one or more subclass, for each subclass correspondence is provided with one group of user terminal performance parameter and value requirement thereof, as the trigger condition of selecting this subclass;
The selection strategy that antithetical phrase concentrate to participate in the cooperative base station group that multipoint cooperative sends and receive is set, comprises one group of user terminal performance parameter and the value requirement thereof that to consider when selecting the cooperative base station group;
Correspondingly, the selection of pattern is finished in the following manner:
Will carry out the user terminal that multipoint cooperative sends and receives to what insert, described serving BS is determined the trigger condition that described value can satisfy according to the value of this user terminal performance parameter of obtaining earlier, selects the subclass of described trigger condition correspondence;
Described serving BS is according to the value of the relevant performance parameter of the selection strategy of cooperative base station group and described user terminal, select a cooperative base station group from the cooperative base station group for style configuration the selection subsets, the multipoint cooperative that carries out this user terminal by this cooperative base station group sends and receives.
Further, said method also has following characteristics:
Described pattern and alternative condition thereof are to set up by the negotiation between the base station, the parameter that described user terminal performance parameter measures when comprising the parameter of ability of user terminal and/or user terminal communication;
Further, said method also has following characteristics:
Comprise a plurality of subclass in the set of described pattern, the number of base stations that comprises for the cooperative base station group of style configuration in each subclass has nothing in common with each other.
Further, said method also has following characteristics:
Be that a subclass correspondence is when being provided with one group of user terminal performance parameter and value thereof and requiring, should guarantee to have the ability of the value requirement of satisfying this group user terminal performance parameter for the cooperative base station group of style configuration in this subclass, putting before this, reducing the number of base stations that participates in cooperation.
Further, said method also has following characteristics:
The performance parameter that presence of intercell interference will be considered when selecting the cooperative base station group;
In the cooperative base station group that is style configuration in the selection subsets, select to comprise serving BS and described user terminal disturbed a cooperative base station group of the strongest one or more base stations that the multipoint cooperative that carries out this user terminal sends and receives; Perhaps, in the cooperative base station group that is style configuration in the selection subsets, selection comprises serving BS and to the interference of the described user terminal cooperative base station group greater than the base station of the presence of intercell interference threshold value of setting, the multipoint cooperative that carries out this user terminal sends and receives.
In order to address the above problem, the present invention also provides a kind of base station with multipoint cooperative transmission and receiving function, comprises the multipoint cooperative module, also comprise module being set and selecting module, wherein:
The described module that is provided with is used to set in advance the pattern set that is used for the multipoint cooperative transmission and receives, for each style configuration one cooperative base station group and correspondence in this pattern set are provided with an alternative condition, described alternative condition comprises one group of user terminal performance parameter and value requirement thereof;
Described selection module is used for will carrying out the user terminal that multipoint cooperative sends and receives to what insert, serving BS obtains the value of this user terminal performance parameter and compares with the alternative condition that is provided with in the module, select one style the pattern of the alternative condition correspondence that can satisfy from described value, and notice multipoint cooperative module;
Described multipoint cooperative module is used for sending and receiving by the multipoint cooperative that carries out described user terminal for the cooperative base station group of the style configuration selected.
Further, above-mentioned base station also has following characteristics:
The described module that is provided with comprises that pattern is provided with unit and condition setting unit, and described selection module comprises first selected cell and second selected cell, wherein:
Described pattern is provided with the unit and is used to set in advance the pattern set that is used for the multipoint cooperative transmission and receives, and is each the style configuration one cooperative base station group in this pattern set, and the pattern in the pattern set is divided into one or more subclass;
Described condition setting unit is provided with the unit with described pattern and is connected, be used to each subclass correspondence that one group of user terminal performance parameter and value requirement thereof are set, as the trigger condition of selecting this subclass, the selection strategy that antithetical phrase concentrate to participate in the cooperative base station group that multipoint cooperative sends and receive is set simultaneously, comprises one group of user terminal performance parameter and the value requirement thereof that to consider when selecting the cooperative base station group;
Described first selected cell is provided with the unit with described pattern and is connected with the condition setting unit, be used for to carry out the user terminal that multipoint cooperative sends and receives to what insert, value according to this user terminal performance parameter of obtaining is determined the trigger condition that described value can satisfy, and selects the subclass of described trigger condition correspondence and notifies described second selected cell;
Described second selected cell is provided with unit, condition setting unit and first selected cell with described pattern and is connected, be used for value, from cooperative base station group, select a cooperative base station group for style configuration the selection subsets according to the relevant performance parameter of the selection strategy of cooperative base station group and described user terminal.
Further, above-mentioned base station also has following characteristics:
A performance parameter will considering when described condition setting unit presence of intercell interference is set to select the cooperative base station group;
Described second selected cell is selected to comprise serving BS and is disturbed a cooperative base station group of the strongest one or more base stations to carry out the multipoint cooperative transmission and the reception of this user terminal to described user terminal in the cooperative base station group that is style configuration in the selection subsets; Perhaps, described second selected cell selects to comprise that serving BS and the multipoint cooperative that the interference of described user terminal is carried out this user terminal greater than a cooperative base station group of the base station of the presence of intercell interference threshold value of setting send and receive in the cooperative base station group that is style configuration in the selection subsets.
Further, above-mentioned base station also has following characteristics:
The parameter that the user terminal performance parameter that described condition setting unit is provided with in described trigger condition and selection strategy measures when comprising the parameter of ability of user terminal and/or user terminal communication; And be that a subclass correspondence is when being provided with one group of user terminal performance parameter and value thereof and requiring, guarantee to have the ability of the value requirement of satisfying this group user terminal performance parameter for the cooperative base station group of style configuration in this subclass, putting before this, reducing the number of base stations that participates in cooperation.
The foregoing description scheme can satisfy performance requirement such as throughput and peak data rate under the different wireless communication environmental condition by the pattern set of the multipoint cooperative transmission/reception (CoMP) of setting and the alternative condition of pattern.Further, by pattern set and the activation threshold value of CoMP rationally are set, satisfy performances such as user terminal bandwidth ability, throughput and peak rate, and limit number of base stations in the different CoMP patterns, reduce the number of base stations that CoMP transmission and the number of times that receives and CoMP participating send and receive, can reduce overhead effectively.In one embodiment, consider that (Inter-cell Interference Coordination ICIC), only selects to exist serious base station of disturbing as cooperative base station to user terminal Inter-Cell Interference Coordination, may effectively reduce presence of intercell interference.
Description of drawings
Fig. 1 is the flow chart of embodiment of the invention method;
Fig. 2 is the function unit figure of embodiment of the invention base station.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.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.
Present embodiment at first needs to be provided with the pattern set and selects relevant condition with pattern based on the multipoint cooperative method of sending and receiving of base station grouping, selects corresponding pattern to carry out multipoint cooperative according to these conditions then and sends and receive, as shown in Figure 1, comprising:
We can say that also each pattern is being represented a cooperative base station group.
One group of user terminal performance parameter of each subclass correspondence and value thereof require to be the trigger condition of this subclass.That is to say, if the value of active user's terminal capabilities parameter meets the value requirement of the pairing one group of user terminal performance parameter of a certain subclass, can use the cooperative base station group of certain style configuration in this subclass to carry out the CoMP transmission and the reception of active user's terminal.
The parameter that the performance parameter of user terminal measures in the time of can comprising the parameter of ability of user terminal and/or user terminal communication.Wherein the parameter of ability of user terminal is as being bandwidth ability, throughput and peak rate or the like, the parameter that measures during user terminal communication as can be Signal Interference and Noise Ratio (Signal to Interference+Noise Ratio, SINR), path loss and presence of intercell interference or the like.These performance parameter values will have influence on the selection of the base station of CoMP participating not simultaneously.Need to prove that one group of user terminal performance parameter of each style configuration can be one, also can be a plurality of, type also is not limited to above-mentioned several.
For different performance parameters, it is different that its value requires, and can be defined as a value or discrete several values, also can be one section continuous span, or the like.Span can be determined by setting one or more threshold values.
Use in the example at one, comprise 3 subclass in the set of the pattern of setting, the CoMP that on behalf of 2,3,4 base stations, each subclass will participate in active user's terminal respectively sends and receives.But this only is an example, and the number of base stations of the pattern in the same subclass might not be identical.
The number of base stations that CoMP participating sends and receives is many more, general communication performance is good more, except that quantity, when correspondence is provided with the user terminal performance parameter of subclass and value thereof and requires, the ability of the cooperative base station of the style configuration that also needs to consider that subclass comprises such as bandwidth ability etc., the ability that the value that makes the cooperative base station group of style configuration in this subclass have to satisfy the corresponding one group of user terminal performance parameter that is provided with of this subclass requires.But, along with the increase of the number of base stations of CoMP participating, the complexity of scheduling is increased, increased overhead.Therefore, also need the taking into account system expense when the requirement of subclass corresponding user terminal performance parameter and value thereof is set, the selection of the pattern of CoMP transmission and reception is the compromise of performance and expense.Require as span by performance parameter and value thereof are set flexibly, can under the prerequisite of guaranteeing the user terminal communication performance, reduce the number of base stations that participates in cooperation effectively, reduce overhead.The parameter and the value requirement thereof that measure when communicating by letter by being provided with can better reflect the situation in the cordless communication network, further improve the communication performance of active user's terminal.
What the performance parameter of the subclass in the above-mentioned pattern set and the setting of pattern, subclass correspondence and value thereof required is provided with and can finishes by the negotiation between the base station.
Can determine to adopt which pattern in the subclass according to the selection strategy of cooperative base station group.Like this, the alternative condition of certain pattern has comprised the selection strategy of the trigger condition and the cooperative base station group of place subclass.If the value of active user's terminal capabilities parameter meets the alternative condition of a certain pattern, can select CoMP transmission and the reception of carrying out active user's terminal for the cooperative base station group of this style configuration for use.
In one example, with the base station to the interference (presence of intercell interference) of user terminal as a performance parameter (can be one or more) of selecting the base station to consider, selection is disturbed the strongest one or more base stations and serving BS to carry out CoMP together to user terminal and is sent and receive, concerning certain cooperative base station group, it is the strongest to the interference of user terminal to be equivalent to requirement non-serving base stations wherein.In another example, equally with the performance parameter of presence of intercell interference as the consideration of selection base station, selection disturbs base station and serving BS greater than the presence of intercell interference threshold value of setting to carry out CoMP transmission and reception together to user terminal, concerning certain cooperative base station group, be equivalent to requirement non-serving base stations wherein to the interference of user terminal greater than the presence of intercell interference threshold value of setting.Consider Inter-Cell Interference Coordination, select to exist the serious base station CoMP participating that disturbs to send and receive, can effectively reduce of the interference of other base stations this user terminal to user terminal.Except that presence of intercell interference, also can carry out the selection of cooperative base station group, as SINR, path loss etc. in conjunction with other one or more performance parameters.
Be appreciated that, in another embodiment, can not carry out the division of subclass, it directly is each style configuration alternative condition, comprise one group of performance parameter and value requirement thereof, with above-mentioned be divided into subclass after, each subclass correspondence is provided with one group of user terminal performance parameter and value requirement thereof, another group user terminal performance parameter and value requirement thereof is set in the selection strategy of cooperative base station group again, also is equivalent in fact be provided with one group of performance parameter and value requirement thereof for each pattern.Further, the alternative condition of certain pattern in fact also is the alternative condition of a cooperative base station group.
If the value of the performance parameter of certain user terminal reality satisfies a plurality of trigger conditions, can from the subclass of these trigger condition correspondences, select a less subclass of overhead.
In one example, the cooperative base station group of supposing style configuration in the selection subsets includes 2 base stations, can from the cooperative base station group that each pattern disposed that comprises for this subclass, select the CoMP transmission and the reception that comprise serving BS and a cooperative base station group of a strongest base station of user terminal interference is carried out this user terminal.Cooperative base station group as style configuration in the selection subsets includes 3 base stations, can from the cooperative base station group that each pattern disposed that comprises for this subclass, select the CoMP transmission and the reception that comprise serving BS and a cooperative base station group of two the strongest base stations of user terminal interference is carried out this user terminal.
In another example, to be the base station be greater than the presence of intercell interference threshold value of setting to the interference of user terminal to value condition in the selection strategy of cooperative base station group, can select qualified one or more cooperative base station group from the cooperative base station group for style configuration the selection subsets according to this selection strategy.When selecting a plurality of cooperative base station group, can be more therefrom optional one group, or select one according to the priority of making an appointment, perhaps also can wait and select one in conjunction with other performance parameters of user terminal such as SINR.
Accordingly, present embodiment be used to realize said method the base station correlation function as shown in Figure 2, comprise that pattern is provided with unit, condition setting unit, first selected cell, second selected cell and multipoint cooperative module, wherein:
Pattern is provided with the unit, is used to be provided for the pattern set that CoMP sends and receives, for each style configuration in this pattern set one cooperative base station group, and the pattern in the pattern set is divided into one or more subclass;
The condition setting unit is provided with the unit with pattern and links to each other, be used to each subclass correspondence that one group of user terminal performance parameter and value requirement thereof are set, antithetical phrase is set simultaneously concentrates the selection strategy of the cooperative base station group of CoMP participating transmission and reception, comprise performance parameter and the value condition that to consider when selecting.
First selected cell is provided with the unit with pattern and links to each other with the condition setting unit, be used for to carry out the user terminal that CoMP sends and receives to what insert, earlier according to the trigger condition that is provided with in the definite condition setting unit that can satisfy of the value of this user terminal performance parameter of obtaining, the pattern of selecting described trigger condition correspondence is provided with the subclass in the unit, and notifies second selected cell.
Second selected cell is provided with unit, condition setting unit, first selected cell and multipoint cooperative module with pattern and links to each other, the selection strategy and the relevant performance parameter of user terminal that are used for the cooperative base station group that is provided with according to the condition setting unit, from selection subsets, select a cooperative base station group in the cooperative base station group of style configuration, and notice multipoint cooperative module.
The multipoint cooperative module links to each other with second selected cell, and the CoMP that the cooperative base station group that is used to select is carried out user terminal sends and receives.
The specific implementation of these Elementary Functions can be referring to the specific descriptions in the method flow above.
Adopt such scheme, compared with prior art, the pattern set of multipoint cooperative transmission/reception (CoMP) can be set by the negotiation between the base station, style configuration in the set of each pattern different cooperative base station groups, to satisfy performance requirements such as throughput, peak data rate under the different wireless communication environmental condition, simultaneously, for the different subclass correspondences of CoMP pattern set are provided with different user terminal performance parameters and value requirement thereof, the value by the user terminal performance parameter triggers uses different subclass.Consider Inter-Cell Interference Coordination (ICIC), can select to exist the serious base station CoMP participating that disturbs to send and receive user terminal.Simultaneously, in order to reduce overhead effectively, under the prerequisite that satisfies the user terminal performance, by performance parameter and the span thereof that the subclass correspondence rationally is set, and siding stopping is concentrated the number of base stations for the cooperative base station group of style configuration, can reduce the number of base stations that CoMP participating sends and receives.
Though the present invention discloses with aforesaid preferred embodiment, be not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention, the modification of being done all is included in the application's the scope.
Claims (10)
1. the multipoint cooperative method that sends and receive comprises:
Set in advance the pattern set that is used for the multipoint cooperative transmission and receives in the base station, for each style configuration one cooperative base station group and correspondence in this pattern set are provided with an alternative condition, described alternative condition comprises one group of user terminal performance parameter and value requirement thereof;
To carry out the user terminal that multipoint cooperative sends and receives to what insert, serving BS obtains the value of this user terminal performance parameter, select one style the pattern of the alternative condition correspondence that can satisfy from described value, the multipoint cooperative that carries out this user terminal by the cooperative base station group of the style configuration selected for this sends and receives.
2. the method for claim 1 is characterized in that, finishes in the following manner for each pattern correspondence is provided with an alternative condition:
Pattern in the pattern set is divided into one or more subclass, for each subclass correspondence is provided with one group of user terminal performance parameter and value requirement thereof, as the trigger condition of selecting this subclass;
The selection strategy that antithetical phrase concentrate to participate in the cooperative base station group that multipoint cooperative sends and receive is set, comprises one group of user terminal performance parameter and the value requirement thereof that to consider when selecting the cooperative base station group;
Correspondingly, the selection of pattern is finished in the following manner:
Will carry out the user terminal that multipoint cooperative sends and receives to what insert, described serving BS is determined the trigger condition that described value can satisfy according to the value of this user terminal performance parameter of obtaining earlier, selects the subclass of described trigger condition correspondence;
Described serving BS is according to the value of the relevant performance parameter of the selection strategy of cooperative base station group and described user terminal, select a cooperative base station group from the cooperative base station group for style configuration the selection subsets, the multipoint cooperative that carries out this user terminal by this cooperative base station group sends and receives.
3. method as claimed in claim 1 or 2 is characterized in that:
Described pattern and alternative condition thereof are to set up by the negotiation between the base station, the parameter that described user terminal performance parameter measures when comprising the parameter of ability of user terminal and/or user terminal communication.
4. method as claimed in claim 2 is characterized in that:
Comprise a plurality of subclass in the set of described pattern, the number of base stations that comprises for the cooperative base station group of style configuration in each subclass has nothing in common with each other.
5. method as claimed in claim 2 is characterized in that:
Be that a subclass correspondence is when being provided with one group of user terminal performance parameter and value thereof and requiring, should guarantee to have the ability of the value requirement of satisfying this group user terminal performance parameter for the cooperative base station group of style configuration in this subclass, putting before this, reducing the number of base stations that participates in cooperation.
6. method as claimed in claim 2 is characterized in that:
The performance parameter that presence of intercell interference will be considered when selecting the cooperative base station group;
In the cooperative base station group that is style configuration in the selection subsets, select to comprise serving BS and described user terminal disturbed a cooperative base station group of the strongest one or more base stations that the multipoint cooperative that carries out this user terminal sends and receives; Perhaps, in the cooperative base station group that is style configuration in the selection subsets, selection comprises serving BS and to the interference of the described user terminal cooperative base station group greater than the base station of the presence of intercell interference threshold value of setting, the multipoint cooperative that carries out this user terminal sends and receives.
7. the base station with multipoint cooperative transmission and receiving function comprises the multipoint cooperative module, it is characterized in that, also comprise module being set and selecting module, wherein:
The described module that is provided with is used to set in advance the pattern set that is used for the multipoint cooperative transmission and receives, for each style configuration one cooperative base station group and correspondence in this pattern set are provided with an alternative condition, described alternative condition comprises one group of user terminal performance parameter and value requirement thereof;
Described selection module is used for will carrying out the user terminal that multipoint cooperative sends and receives to what insert, serving BS obtains the value of this user terminal performance parameter and compares with the alternative condition that is provided with in the module, select one style the pattern of the alternative condition correspondence that can satisfy from described value, and notice multipoint cooperative module;
Described multipoint cooperative module is used for sending and receiving by the multipoint cooperative that carries out described user terminal for the cooperative base station group of the style configuration selected.
8. base station as claimed in claim 7 is characterized in that, the described module that is provided with comprises that pattern is provided with unit and condition setting unit, and described selection module comprises first selected cell and second selected cell, wherein:
Described pattern is provided with the unit and is used to set in advance the pattern set that is used for the multipoint cooperative transmission and receives, and is each the style configuration one cooperative base station group in this pattern set, and the pattern in the pattern set is divided into one or more subclass;
Described condition setting unit is provided with the unit with described pattern and is connected, be used to each subclass correspondence that one group of user terminal performance parameter and value requirement thereof are set, as the trigger condition of selecting this subclass, the selection strategy that antithetical phrase concentrate to participate in the cooperative base station group that multipoint cooperative sends and receive is set simultaneously, comprises one group of user terminal performance parameter and the value requirement thereof that to consider when selecting the cooperative base station group;
Described first selected cell is provided with the unit with described pattern and is connected with the condition setting unit, be used for to carry out the user terminal that multipoint cooperative sends and receives to what insert, value according to this user terminal performance parameter of obtaining is determined the trigger condition that described value can satisfy, and selects the subclass of described trigger condition correspondence and notifies described second selected cell;
Described second selected cell is provided with unit, condition setting unit and first selected cell with described pattern and is connected, be used for value, from cooperative base station group, select a cooperative base station group for style configuration the selection subsets according to the relevant performance parameter of the selection strategy of cooperative base station group and described user terminal.
9. as claim 7 or 8 described methods, it is characterized in that:
A performance parameter will considering when described condition setting unit presence of intercell interference is set to select the cooperative base station group;
Described second selected cell is selected to comprise serving BS and is disturbed a cooperative base station group of the strongest one or more base stations to carry out the multipoint cooperative transmission and the reception of this user terminal to described user terminal in the cooperative base station group that is style configuration in the selection subsets; Perhaps, described second selected cell selects to comprise that serving BS and the multipoint cooperative that the interference of described user terminal is carried out this user terminal greater than a cooperative base station group of the base station of the presence of intercell interference threshold value of setting send and receive in the cooperative base station group that is style configuration in the selection subsets.
10. method as claimed in claim 8 is characterized in that:
The parameter that the user terminal performance parameter that described condition setting unit is provided with in described trigger condition and selection strategy measures when comprising the parameter of ability of user terminal and/or user terminal communication; And be that a subclass correspondence is when being provided with one group of user terminal performance parameter and value thereof and requiring, guarantee to have the ability of the value requirement of satisfying this group user terminal performance parameter for the cooperative base station group of style configuration in this subclass, putting before this, reducing the number of base stations that participates in cooperation.
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| CN2009101596406A CN101965060A (en) | 2009-07-24 | 2009-07-24 | Method for coordinated multi-point transmission and reception and corresponding base station |
| PCT/CN2009/075801 WO2011009271A1 (en) | 2009-07-24 | 2009-12-21 | Method for collaborative multiple point transmission and reception and corresponding base station |
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| US10448370B2 (en) | 2014-02-10 | 2019-10-15 | Huawei Technologies Co., Ltd. | System and method for virtual multi-point transceivers |
| US10932235B2 (en) | 2014-02-10 | 2021-02-23 | Huawei Technologies Co., Ltd. | System and method for virtual multi-point transceivers |
| US11800520B2 (en) | 2014-02-10 | 2023-10-24 | Huawei Technologies Co., Ltd. | System and method for virtual multi-point transceivers |
| CN106162782A (en) * | 2015-03-30 | 2016-11-23 | 中国移动通信集团公司 | System of selection, device and the terminal of a kind of voice fallback Target cell |
| WO2018010689A1 (en) * | 2016-07-14 | 2018-01-18 | 中兴通讯股份有限公司 | Group management method utilized in coordinated multipoint, device, and system |
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| WO2011009271A1 (en) | 2011-01-27 |
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