CN104104420B - The determination method of cooperation transmitting collection and base station - Google Patents
The determination method of cooperation transmitting collection and base station Download PDFInfo
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- CN104104420B CN104104420B CN201310120630.8A CN201310120630A CN104104420B CN 104104420 B CN104104420 B CN 104104420B CN 201310120630 A CN201310120630 A CN 201310120630A CN 104104420 B CN104104420 B CN 104104420B
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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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Abstract
The embodiment of the present invention provides determination method and the base station of a kind of transmitting collection that cooperates.This method includes：Obtain the first cooperation transmitting collection of user equipment, and obtain at least one first calibration set, each first calibration set at least one first calibration set includes at least two cells, joint channel correction is completed between any two cells at least two cell, the first cooperation transmitting collection includes providing the set of at least one cell of cooperation transmitting for the user equipment；The second cooperation transmitting collection of the user equipment is determined according to the first of the user equipment the cooperation transmitting collection and at least one first calibration set；Joint is carried out according to user equipment described in the second of the user equipment the cooperation transmitting set pair and sends JT coherent transmittings.Therefore, base station further contemplates the situation for needing to complete joint channel correction between multiple cell in JT coherent transmittings, and collection is launched in the cooperation that can more reasonably determine to carry out user equipment JT coherent transmittings, improves gain.
Description
Technical field
The present embodiments relate to communication technical field, and more particularly, to cooperation launch collection determination method and
Base station.
Background technology
Joint sends (Joint Transmission, JT) technology as coordinate multipoint (Coordinative Multiple
Point, CoMP) technology one kind, the average throughput of cell edge can be significantly improved.In existing technology, coorporative network
Once disposing, base station determines CoMP cooperation transmitting collection according to deployment scenario and no longer changed network, or based on user equipment
Metrical information (receiving power (the Reference Signal of such as reference signal that (User Equipment, UE) is reported
Receiving Power, RSRP) or channel quality instruction (Channel Quality Indicator, CQI) etc.) determine
CoMP cooperation transmitting collection.
But in order to obtain gain that JT technologies bring, it is necessary to enter between the multiple cells to be cooperated in JT coherent transmittings
The correction of row joint channel so that during multiple cells after numeral or analog compensation are corresponding radio-frequency channel channel response when
Between and/or phase on align, alignment here can be radio-frequency channel channel response phase in transmitting and/or reception after compensation
Deng or compensation after multiple transmittings with reception in radio-frequency channel channel response ratio it is equal.And use prior art
The CoMP cooperation transmitting collection of determination as the multiple cells to be cooperated in JT coherent transmittings, will cause the gain of joint transmission signal compared with
It is low.
The content of the invention
The embodiment of the present invention provides determination method and the base station of a kind of transmitting collection that cooperates, and can more reasonably determine to user
Equipment carries out the cooperation transmitting collection of JT coherent transmittings, improves the gain of joint transmission signal.
First aspect, there is provided a kind of determination method for the transmitting collection that cooperates, this method include：Obtain the first of user equipment
Cooperation transmitting collection, and at least one first calibration set is obtained, each first calibration set at least one first calibration set
Including at least two cells, joint channel correction has been completed between any two cells at least two cell, described the
One cooperation transmitting collection includes providing the set of at least one cell of cooperation transmitting for the user equipment；Set according to the user
The first standby cooperation transmitting collection and at least one first calibration set determine the second cooperation transmitting collection of the user equipment；Root
Joint, which is carried out, according to user equipment described in the second cooperation transmitting set pair of the user equipment sends JT coherent transmittings.
With reference in a first aspect, in another implementation of first aspect, at least one first calibration set is one
Individual first calibration set, it is described to be determined according to the first of the user equipment the cooperation transmitting collection and at least one first calibration set
Second cooperation transmitting collection of the user equipment, including：By the first of the user equipment the cooperation transmitting collection and one the
The common factor of one calibration set is defined as the second cooperation transmitting collection of the user equipment.
With reference to one of first aspect or its above-mentioned implementation, in another implementation of first aspect, it is described extremely
Few first calibration set be multiple first calibration sets, it is described according to the first of the user equipment the cooperation transmitting collection with it is described extremely
Few first calibration set determines the second cooperation transmitting collection of the user equipment, including：By the multiple first calibration set
Union is defined as the second calibration set；The common factor of first cooperation transmitting collection of the user equipment and second calibration set is determined
For the second cooperation transmitting collection of the user equipment.
It is described to obtain in another implementation of first aspect with reference to one of first aspect or its above-mentioned implementation
At least one first calibration set is taken, including：Obtain at least one the first calibration set for including the user equipment serving cell.
It is described to obtain in another implementation of first aspect with reference to one of first aspect or its above-mentioned implementation
At least one first calibration set is taken, including：At least one first calibration set is obtained from network controller；Or from reference
At least one first calibration set is obtained in the base station of cell, the reference cell is sent out for the first cooperation of the user equipment
Penetrate a cell of concentration.
With reference to one of first aspect or its above-mentioned implementation, in another implementation of first aspect, work as participation
JT coherent transmittings are multiple user equipmenies and the user equipment is the multiple user equipment a period of time, described according to the use
User equipment described in second cooperation transmitting set pair of family equipment carries out JT coherent transmittings, including：According to the multiple user equipment
The common factor of the second cooperation transmitting collection carries out JT coherent transmittings to the user equipment corresponding to respectively.
With reference to one of first aspect or its above-mentioned implementation, in another implementation of first aspect, the use
First cooperation transmitting of family equipment integrates launches collection or semi-static cooperation transmitting collection or dynamic cooperative transmitting collection as static cooperation.
Second aspect, there is provided a kind of base station, the base station include：Acquiring unit, for obtaining the first association of user equipment
Make transmitting collection, and obtain at least one first calibration set, each first calibration set bag at least one first calibration set
Include at least two cells, complete joint channel correction between any two cells at least two cell, described first
Cooperation transmitting collection includes providing the set of at least one cell of cooperation transmitting for the user equipment；Determining unit, for root
First cooperation transmitting collection of the user equipment obtained according to the acquiring unit and at least one first calibration set determine
Second cooperation transmitting collection of the user equipment；Transmitter unit, for the user equipment determined according to the determining unit
Second cooperation transmitting set pair described in user equipment carry out JT coherent transmittings.
With reference to second aspect, in another implementation of second aspect, the determining unit is specifically used for：By described in
First cooperation transmitting collection of the user equipment that acquiring unit obtains and the common factor of one first calibration set are defined as institute
State the second cooperation transmitting collection of user equipment.
It is described true in another implementation of second aspect with reference to one of second aspect or its above-mentioned implementation
Order member is specifically used for：The union for the multiple first calibration set that the acquiring unit is obtained is defined as the second calibration set；
First cooperation transmitting collection of the user equipment that the acquiring unit is obtained and the common factor of second calibration set are defined as
Second cooperation transmitting collection of the user equipment.
It is described to obtain in another implementation of second aspect with reference to one of second aspect or its above-mentioned implementation
Unit is taken to be specifically used for：Obtain at least one the first calibration set for including the user equipment serving cell.
It is described to obtain in another implementation of second aspect with reference to one of second aspect or its above-mentioned implementation
Unit is taken to be specifically used for：At least one first calibration set is obtained from network controller；Or it is specifically used for：From with reference to small
At least one first calibration set is obtained in the base station in area, the reference cell is launched for the first cooperation of the user equipment
The cell concentrated.
With reference to one of second aspect or its above-mentioned implementation, in another implementation of second aspect, work as participation
JT coherent transmittings are multiple user equipmenies and the user equipment is the multiple user equipment a period of time, and the transmitter unit has
Body is used for：The common factor pair of the second cooperation transmitting collection according to corresponding to the multiple user equipment difference that the acquiring unit obtains
The user equipment carries out JT coherent transmittings.
With reference to one of second aspect or its above-mentioned implementation, in another implementation of second aspect, the use
First cooperation transmitting of family equipment integrates launches collection or semi-static cooperation transmitting collection or dynamic cooperative transmitting collection as static cooperation.
Base station not only obtains the first cooperation transmitting collection of user equipment in embodiments of the present invention, it is also contemplated that in the relevant hairs of JT
Need to complete the situation that joint channel corrects between multiple cell when penetrating, obtain at least one the first school for having completed joint channel correction
Positive collection.Therefore, the second cooperation transmitting collection is determined according to the first of user equipment the cooperation transmitting collection and at least one first calibration set
To carry out sending JT coherent transmittings to the user equipment, it is possible to increase combine the gain of transmission signal.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the flow chart of the determination method of the cooperation transmitting collection of one embodiment of the invention.
Fig. 2 is the indicative flowchart of the process of the determination method of the cooperation transmitting collection of one embodiment of the invention.
Fig. 3 is the structured flowchart of the base station of one embodiment of the invention.
Fig. 4 is the structured flowchart of the base station of another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
It should be understood that the technical scheme of the embodiment of the present invention can apply to various communication systems, such as：Global system for mobile telecommunications
(Global System of Mobile communication, GSM) system, CDMA (Code Division
Multiple Access, CDMA) system, WCDMA (Wideband Code Division Multiple
Access, WCDMA) system, GPRS (General Packet Radio Service, GPRS), drill for a long time
Enter (Long Term Evolution, LTE) system, LTE FDDs (Frequency Division Duplex, FDD) system
System, LTE time division duplexs (TimeDivision Duplex, TDD), UMTS (Universal Mobile
Telecommunication System, UMTS), global interconnection inserting of microwave (Worldwide Interoperability
For Microwave Access, WiMAX) communication system etc..
In embodiments of the present invention, base station can be base station (the Base Transceiver in GSM or CDMA
Station, BTS) or the base station (NodeB, NB) in WCDMA or the base station in UMTS (Base Station,
BS), evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, etc. is can also be, the present invention is not
Limit.
Network controller can be base station controller, such as base station controller (the Base Station in GSM or CDMA
Controller, BSC), the radio network controller (Radio Network Controller, RNC) in WCDMA, Huo Zhehe
And in LTE evolved base station (evolutional Node B, eNB or e-NodeB)；Network controller can also be operation
Maintenance centre (Operations＆Maintenance Center, OMC) etc..It should be understood that the embodiment of the present invention is not limited to
This.
User equipment (User Equipment, UE), also referred to as mobile terminal (Mobile Terminal), movement
User equipment etc., can be through wireless access network (for example, RAN, Radio Access Network) and one or more core nets
Communicated, user equipment can be mobile terminal, such as mobile phone (or being " honeycomb " phone) and with mobile terminal
Computer, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they with
Wireless access network exchanges language and/or data.
Fig. 1 is the flow chart of the determination method of the cooperation transmitting collection of one embodiment of the invention.Fig. 1 method is held by base station
OK.
101, the first cooperation transmitting collection of user equipment is obtained, and obtains at least one first calibration set, at least one the
Each first calibration set in one calibration set includes at least two cells, between any two cells at least two cell
Joint channel correction is completed, the first cooperation transmitting collection includes providing at least one of cooperation transmitting for the user equipment
The set of cell.
102, determine the of user equipment according to the first of user equipment the cooperation transmitting collection and at least one first calibration set
Two cooperation transmitting collection.
103, set pair user equipment is launched according to the second of user equipment the cooperation and carries out joint transmission JT coherent transmittings.
Base station not only obtains the first cooperation transmitting collection of user equipment in embodiments of the present invention, it is also contemplated that in the relevant hairs of JT
Need to complete the situation that joint channel corrects between multiple cell when penetrating, obtain at least one the first school for having completed joint channel correction
Positive collection.Therefore, the second cooperation transmitting collection is determined according to the first of user equipment the cooperation transmitting collection and at least one first calibration set
To carry out JT coherent transmittings to the user equipment, it is possible to increase combine the gain of transmission signal.
Alternatively, as one embodiment, the first cooperation transmitting of user equipment integrate can be static cooperation transmitting collect or
Semi-static cooperation transmitting collection or dynamic cooperative transmitting collection.
Static cooperation transmitting collection refers to：Once (collaborative network can include multiple base stations, a base to collaborative network for deployment
Multiple cells can be had by standing down, can have Multiple Small Cell Sites or micro-base station or Remote Radio Unit under a base station in other words
(Remote Radio Unit, RRU)), JT coherent transmittings are carried out to some UE and (such as combines multiple cells and launches data for the UE
Business) multiple cells determined by the base station of the serving cell of the UE according to deployment scenario, and once it is determined that, the UE is entered
Multiple cells of row JT coherent transmittings are no longer changed.For example, have multiple cells in collaborative network deployment, be Cell 0 respectively to
The base station of Cell5, some UE serving cell is that the cell that the UE determines to carry out JT coherent transmittings is Cell 0, the and of Cell 2
Cell 4, and no longer change.
Semi-static cooperation transmitting collection：Collaborative network is once dispose that (collaborative network can include multiple base stations, under a base station
Can have multiple cells), to some UE carry out JT coherent transmittings multiple cells by the UE serving cell base station according to
Metrical information that deployment scenario and the UE are reported determines.It is Cell 0 respectively for example, having multiple cells in collaborative network deployment
To Cell5.Starting stage, the base station of some UE serving cell (Cell 1) determine to carry out the cell of JT coherent transmittings for the UE
It is Cell 0, Cell 2 and Cell 4.Sometime, the survey that the UE reports to base station report measurement information, base station according to the UE
It is Cell 2, Cell 3 and Cell 5 to measure the cell that information determines, now, base station can select Cell 2, Cell 3 and Cell
5 be that the UE carries out JT coherent transmittings.Certainly, base station can also determine to carry out the small of JT coherent transmittings using polling mode as the UE
Area, determine that Cell 0, Cell 1 and Cell 2 determine to carry out JT coherent transmittings, over time, base for the UE when such as starting
Stand and determine that Cell 3, Cell 4 and Cell 5 are that the UE determines to carry out JT coherent transmittings.
The static cooperation transmitting collection of all UE under same serving cell can be the same, or same serving cell
Under all UE semi-static cooperation transmitting collection can be the same.
Dynamic cooperative transmitting collection：The metrical information that base station reports according to UE carries out the more of JT coherent transmittings to be defined as the UE
Individual cell, that is to say, that determine which cell carries out JT coherent transmittings by UE.For example, have in collaborative network deployment multiple
Cell, be Cell 0 to Cell5 respectively, metrical information that base station reports according to UE (RSRP for the serving cell that such as UE is reported and
The RSRP of neighbor cell difference is less than 5dB) be defined as the UE carry out JT coherent transmittings cell be Cell 2, Cell 4 and Cell
5, then base station determines that Cell 2, Cell 4 and Cell 5 carry out JT coherent transmittings for the UE, and different UE reports according to itself
Metrical information, cooperation transmitting collection can be with different.
It should be noted that the metrical information that UE is reported can be including at least one following：The receiving power of reference signal
(Reference Signal Receiving Power, RSRP), the quality of reception (the Reference Signal of reference signal
Receiving Quality, RSRQ), channel quality instruction (Channel Quality Indicator, CQI), signal with it is dry
Disturb plus noise ratio (Signal to Interference plus Noise Ratio, SINR), Block Error Rate (Block Error
Rate, BLER).Etc..It should be understood that the embodiment of the present invention is not limited to this.
Base station not only obtains the first cooperation transmitting collection of user equipment in embodiments of the present invention, it is also contemplated that in the relevant hairs of JT
Need to complete the situation that joint channel corrects between multiple cell when penetrating, obtain at least one the first school for having completed joint channel correction
Positive collection.Therefore, the second cooperation transmitting collection is determined according to the first of user equipment the cooperation transmitting collection and at least one first calibration set
To carry out JT coherent transmittings to the user equipment, it is possible to increase combine the gain of transmission signal.
Alternatively, as another embodiment, before step 101, collaborative network is once disposed, the base in collaborative network
Collaboration set can be obtained from network controller by standing.In a step 101, when base station is determining to carry out JT phases for some user equipment
During multiple cells of dry transmitting, the first cooperation transmitting of user equipment is selected in the collaboration set that can be obtained from network controller
Collection.First cooperation transmitting integrates the subset as collaboration set.
Alternatively, as another embodiment, in a step 101, the base station of the serving cell of user equipment can be from net
At least one first calibration set is obtained in network controller；At least one first correction can also be obtained from the base station of reference cell
Collection, the cell that the reference cell is concentrated for the first cooperation transmitting of user equipment, the embodiment of the present invention are not construed as limiting to this.
Specifically, after joint channel correction is completed between any two cells in multiple cells under some base station, the base station can be with
The plurality of cell is defined as the first calibration set, is sent to network controller.Preferably, when the base station is not the base of reference cell
When standing, the base station for the reference cell the first calibration set being sent in collaborative network.When the base station to network controller without obtaining
Take, only need to obtain the first calibration set from the base station of reference cell, so, time delay can be reduced.It should be noted that different base station
Under cell between can also joint channel correction, the embodiment of the present invention is without limitation.
It is alternatively possible to by privately owned interface (such as under the scene that a baseband board supports multiple cells), i.e. base station certainly
The interface of definition, obtain at least one first calibration set.It should be understood that the embodiment of the present invention is not construed as limiting to this, can also pass through
The interface (such as X2 interface) of other forms obtains at least one first calibration set.
Alternatively, as another embodiment, in a step 101, acquisition is at least one to include user equipment serving cell
The first calibration set.
Alternatively,, in a step 102, can be with when the first calibration set of acquisition only has one as another embodiment
The common factor of first cooperation transmitting collection of user equipment and first calibration set is defined as to the second cooperation transmitting of user equipment
Collection.When the first calibration set of acquisition has multiple, in a step 102, the union of the plurality of first calibration set can be defined as
Second calibration set, specifically, each first calibration set in multiple first calibration sets include the serving cell of user equipment, will use
First cooperation transmitting collection of family equipment and the common factor of the second calibration set are defined as the second cooperation transmitting collection of user equipment.
It should be understood that the embodiment of the present invention to how according to user equipment first cooperate transmitting collection and the first calibration set determine should
Second cooperation transmitting collection of user equipment is not construed as limiting.
Alternatively, it is multiple user equipmenies (also referred to as " multi-user when participating in JT coherent transmittings as another embodiment
Joint sends (Multi-User Joint Transmission, MU-JT) ") when, can be according to the embodiments of the present invention
Method seriatim determines the second collaboration set of each user equipment, in a step 102, according to corresponding to multiple user equipmenies difference
The common factor of second cooperation transmitting collection carries out JT coherent transmittings to any one user equipment in multiple user equipmenies, that is to say, that
Using occuring simultaneously as final collaboration set for the second cooperation transmitting collection of the user equipment of each participation MU-JT coherent transmittings.
It is UE 1, UE 2 and UE 3 respectively for example, if the user equipment for participating in MU-JT coherent transmittings is 3, UE1's
Second cooperation transmitting integrates as Cell 0, Cell 1, Cell 2 and Cell 3；UE 2 the second cooperation transmitting collection Cell 0, Cell
1 and Cell 2；And UE 3 the 3rd cooperation transmitting collection Cell0, Cell 1 and Cell 3.So, the cooperation of MU-JT coherent transmittings
Integrate as Cell 0 and Cell 1.
It should be understood that the number of user equipment or number of cells etc. are merely exemplary in above-mentioned example, and have to limit
The scope of the present invention.
Alternatively, before step 101, it can confirm that whether user equipment needs to carry out JT coherent transmittings, base station can be with
The metrical information for receiving user equipment feedback is judged.CQI or RSRP such as the serving cell of some user equipment feedback is small
When some threshold value, base station determines that the user equipment is edge customer equipment, it is thus identified that the user equipment needs to carry out JT
Coherent transmitting, perform step 101.
Alternatively, after step 102, it can be evaluated whether that use the second cooperation transmitting to integrate carries out the relevant hairs of JT as user equipment
Whether the signal gain penetrated is more than the signal gain of other non-JT coherent transmission modes, if it is, performing step 103.
The embodiment of the present invention is described more fully with reference to Fig. 2 example.
201, base station confirms that user equipment needs to carry out JT coherent transmittings.
Alternatively, base station can receive the metrical information that user equipment feeds back and be judged.As some user equipment feeds back
Metrical information, when being less than some threshold value such as the CQI or RSRP of serving cell, base station determines that the user equipment is edge customer
Equipment, it is thus identified that user equipment is the user equipment of JT coherent transmittings, that is, need to carry out JT coherent transmittings.
It should be noted that the metrical information of UE feedbacks can be including at least one following：RSRP、RSRQ、CQI、SINR、
BLER etc..It should be understood that the embodiment of the present invention is not limited to this.
202, base station obtains the first cooperation transmitting collection and the first calibration set of user equipment.
Alternatively, the base station of the serving cell of user equipment can obtain at least one first correction from network controller
Collection, can also obtain at least one first calibration set from the base station of reference cell, and the reference cell is the first of user equipment
The cell that cooperation transmitting is concentrated, the embodiment of the present invention are not construed as limiting to this.Specifically, when multiple cells under some base station
In any two cells between complete joint channel correction after, the plurality of cell can be defined as the first calibration set by the base station,
It is sent to network controller.Preferably, when the base station is not the base station of reference cell, the first calibration set is sent to coorporative network
The base station of reference cell in network.When the base station need not obtain to network controller, the need to be only obtained from the base station of reference cell
One calibration set, so, time delay can be reduced.It should be noted that can also joint channel school between cell under different base station
Just, the embodiment of the present invention is without limitation.
It is alternatively possible to by privately owned interface (such as under the scene that a baseband board supports multiple cells), i.e. base station certainly
The interface of definition, obtain at least one first calibration set.It should be understood that the embodiment of the present invention is not construed as limiting to this, can also pass through
The interface (such as X2 interface) of other forms obtains at least one first calibration set.
Alternatively, the first cooperation transmitting collection can be static cooperation transmitting collection or semi-static cooperation transmitting collection or dynamic cooperative
Transmitting collection.For example, when the first cooperation transmitting collection is static cooperation transmitting collection, association that base station can obtain from network controller
Make to concentrate the first cooperation of selection user equipment to launch collection.
Alternatively, the first calibration set of acquisition all includes the serving cell of user equipment.
203, base station determines the second cooperation transmitting collection of user equipment.
Alternatively, when the first calibration set that base station obtains in step 202 only has one, base station can be by user equipment
First cooperation transmitting collection and first calibration set commons factor be defined as user equipment second cooperation transmitting collect.For example, with
First cooperation transmitting collection of family equipment is Cell 0, Cell 1 and Cell 2, and the first calibration set is the and of Cell0, Cell 1
Cell 3, that is to say, that completed joint channel between any two cells in Cell 0, Cell 1 and 3 three cells of Cell
Correction.Cell 0 and Cell 1 are defined as the second cooperation transmitting collection of the user equipment by base station.
Alternatively, when the first calibration set that base station obtains in step 202 has multiple, choose and taken comprising the user equipment
Multiple first calibration sets for cell of being engaged in, the union of the plurality of first calibration set can be defined as the second calibration set, will used by base station
First cooperation transmitting collection of family equipment and the common factor of the second calibration set are defined as the second cooperation transmitting collection of user equipment.With two
Illustrated exemplified by calibration set, first the first calibration set is Cell 0, Cell 1 and Cell 3, and second calibration set is
Cell0, Cell 2 and Cell 4, the union of two calibration sets is Cell 0, Cell 1, Cell 2, Cell 3 and Cell 4.It is false
If the first cooperation transmitting collection of user equipment is Cell 0, Cell 1 and Cell 2, then, base station is by Cell 0, the and of Cell 1
Cell 2 is defined as the second cooperation transmitting collection of the user equipment.
Alternatively, be multiple user equipmenies when participating in JT coherent transmittings, i.e., can be with the case of MU-JT coherent transmittings
The second cooperation transmitting collection of each user equipment is seriatim determined, by the second cooperation transmitting collection corresponding to multiple user equipmenies difference
Common factor be defined as final second cooperation transmitting collection.Specific example refers to above-mentioned, and here is omitted.
It should be understood that what above-mentioned example was merely exemplary, and the scope of the present invention have to be limited.
204, estimation the second cooperation transmitting collection in base station carries out the gain of JT coherent transmittings.
205, base station determines to carry out JT coherent transmittings using the second cooperation transmitting collection.
Alternatively, base station estimates that use the second cooperation transmitting to integrate carries out JT coherent transmittings as user equipment in step 204
Signal gain when being more than the signal gain of other non-JT coherent transmission modes, it is determined that using the second cooperation transmitting to integrate and set as user
It is standby to carry out JT coherent transmittings.
Base station not only obtains the first cooperation transmitting collection of user equipment in embodiments of the present invention, it is also contemplated that in the relevant hairs of JT
Need to complete the situation that joint channel corrects between multiple cell when penetrating, obtain at least one the first school for having completed joint channel correction
Positive collection.Therefore, the second cooperation transmitting collection is determined according to the first of user equipment the cooperation transmitting collection and at least one first calibration set
To carry out JT coherent transmittings to the user equipment, it is possible to increase combine the gain of transmission signal.
Fig. 3 is the structured flowchart of the base station of one embodiment of the invention.Base station 300 includes acquiring unit 301, determining unit
302 and transmitter unit 303.
Acquiring unit 301, for obtaining the first cooperation transmitting collection of user equipment, and obtain at least one first correction
Collection, each first calibration set at least one first calibration set include at least two cells, at least two cell
Joint channel correction is completed between any two cells, the first cooperation transmitting collection includes providing cooperation for the user equipment
The set of at least one cell of transmitting.
Determining unit 302, for the first cooperation transmitting collection and at least one of the user equipment obtained according to acquiring unit 301
Individual first calibration set determines the second cooperation transmitting collection of user equipment.
Transmitter unit 303, the second cooperation transmitting set pair user of the user equipment for being determined according to determining unit 302 set
It is standby to carry out JT coherent transmittings.
Base station not only obtains the first cooperation transmitting collection of user equipment in embodiments of the present invention, it is also contemplated that in the relevant hairs of JT
Need to complete the situation that joint channel corrects between multiple cell when penetrating, obtain at least one the first school for having completed joint channel correction
Positive collection, wherein the first cooperation transmitting integrates launches collection or semi-static cooperation transmitting collection or dynamic cooperative transmitting collection as static cooperation.Cause
This, determines the second cooperation transmitting collection come to the use according to the first of user equipment the cooperation transmitting collection and at least one first calibration set
Family equipment carries out JT coherent transmittings, it is possible to increase combines the gain of transmission signal.
Base station 300 can realize each step for being related to base station in Fig. 1 and Fig. 2 method, to avoid repeating, no longer retouch in detail
State.
Alternatively, as one embodiment, the first cooperation transmitting of user equipment integrate can be static cooperation transmitting collect or
Semi-static cooperation transmitting collection or dynamic cooperative transmitting collection.
Static cooperation transmitting collection refers to：Once (collaborative network can include multiple base stations, a base to collaborative network for deployment
Multiple cells can be had by standing down, can have Multiple Small Cell Sites or micro-base station or RRU under a base station in other words), to some
UE carries out multiple cells of JT coherent transmittings (such as combine multiple cells and launch data service for the UE) by the serving cell of the UE
Base station determined according to deployment scenario, and once it is determined that, to the UE carry out JT coherent transmittings multiple cells no longer change.
It is Cell 0 to Cell5 respectively, the base station of some UE serving cell is should for example, having multiple cells in collaborative network deployment
The cell that UE determines to carry out JT coherent transmittings is Cell 0, Cell 2 and Cell 4, and is no longer changed.
Semi-static cooperation transmitting collection：Collaborative network is once dispose that (collaborative network can include multiple base stations, under a base station
Can have multiple cells), to some UE carry out JT coherent transmittings multiple cells by the UE serving cell base station according to
Metrical information that deployment scenario and the UE are reported determines.It is Cell 0 respectively for example, having multiple cells in collaborative network deployment
To Cell5.Starting stage, the base station of some UE serving cell (Cell 1) determine to carry out the cell of JT coherent transmittings for the UE
It is Cell 0, Cell 2 and Cell 4.Sometime, the survey that the UE reports to base station report measurement information, base station according to the UE
It is Cell 2, Cell 3 and Cell 5 to measure the cell that information determines, now, base station can select Cell 2, Cell 3 and Cell
5 be that the UE carries out JT coherent transmittings.Certainly, base station can also determine to carry out the small of JT coherent transmittings using polling mode as the UE
Area, determine that Cell 0, Cell 1 and Cell 2 determine to carry out JT coherent transmittings, over time, base for the UE when such as starting
Stand and determine that Cell 3, Cell 4 and Cell 5 are that the UE determines to carry out JT coherent transmittings.
The static cooperation transmitting collection of all UE under same serving cell can be the same, or under same serving cell
All UE semi-static cooperation transmitting collection can be the same.
Dynamic cooperative transmitting collection：The metrical information that base station reports according to UE carries out the more of JT coherent transmittings to be defined as the UE
Individual cell, that is to say, that determine which cell carries out JT coherent transmittings by UE.For example, have in collaborative network deployment multiple
Cell, be Cell 0 to Cell5 respectively, metrical information that base station reports according to UE (RSRP for the serving cell that such as UE is reported and
The RSRP of neighbor cell difference is less than 5dB) be defined as the UE carry out JT coherent transmittings cell be Cell 2, Cell 4 and Cell
5, then base station determines that Cell 2, Cell 4 and Cell 5 carry out JT coherent transmittings for the UE, and different UE reports according to itself
Metrical information, cooperation transmitting collection can be with different.
It should be noted that the metrical information of UE feedbacks can be including at least one following：RSRP、RSRQ、CQI、SINR、
BLER etc..It should be understood that the embodiment of the present invention is not limited to this.
Alternatively, as another embodiment, when the first calibration set that acquiring unit 301 obtains only has one, it is determined that single
Member 302 is specifically used for：First cooperation transmitting collection of the user equipment that acquiring unit 301 is obtained and the friendship of first calibration set
Collection is defined as the second cooperation transmitting collection of user equipment.
Alternatively, as another embodiment, when the first calibration set that acquiring unit 301 obtains has multiple, it is determined that single
Member 302 is specifically used for：The union for multiple first calibration sets that acquiring unit 301 is obtained is defined as the second calibration set, will obtain
First cooperation transmitting collection of the user equipment that unit 301 obtains and the common factor of the second calibration set are defined as the second association of user equipment
Make transmitting collection.
Alternatively, it is specifically used for as another embodiment, acquiring unit 301：At least one is obtained from network controller
Individual first calibration set；Or it is specifically used for：At least one first calibration set is obtained from the base station of reference cell, reference cell is
The cell that first cooperation transmitting of user equipment is concentrated.
Alternatively, it is specifically used for as another embodiment, acquiring unit 301：Obtain and at least one include user equipment
First calibration set of serving cell.
Alternatively, as another embodiment, when participating in, JT coherent transmittings are multiple user equipmenies and user equipment is more
For the moment, transmitter unit 303 is specifically used for individual user equipment：It is right respectively according to multiple user equipmenies that acquiring unit 301 obtains
The common factor for the second cooperation transmitting collection answered carries out JT coherent transmittings to user equipment.
Optionally it is determined that unit 302 can be also used for confirming whether user equipment needs to carry out JT coherent transmittings, by connecing
The metrical information of the user equipment feedback of receipts is judged.CQI or RSRP such as the serving cell of some user equipment feedback is small
When some threshold value, determining unit 302 can be also used for determining that the user equipment is edge customer equipment, it is thus identified that should
User equipment needs to carry out JT coherent transmittings.
The second cooperation transmitting is used to integrate as user equipment progress JT phases optionally it is determined that unit 302 can be also used for estimation
Whether the signal gain of dry transmitting is more than the signal gain of other non-JT coherent transmission modes.
The embodiment of the present invention further provides the device embodiment for realizing each step and method in above method embodiment.Figure
4 be the structured flowchart of the base station of another embodiment of the present invention, and in this embodiment, equipment 400 includes processor 401, storage
Device 402, transmitter 403 and receiver 404.The operation of the control device 400 of processor 401, processor 401 can also be referred to as CPU
(Central Processing Unit, CPU).Memory 402 can include read-only storage and arbitrary access
Memory, and provide instruction and data to processor 401.The a part of of memory 402 can also deposit at random including non-volatile row
Access to memory (NVRAM).Processor 401, memory 402, transmitter 403 and receiver 404 are coupling in by bus system 410
Together, wherein bus system 410 is in addition to including data/address bus, in addition to power bus, controlling bus and status signal bus in addition.
But for the sake of clear explanation, various buses are all designated as bus system 410 in figure.
The method that the embodiments of the present invention disclose can apply above-mentioned equipment 400.Wherein, processor 401 is probably
A kind of IC chip, there is the disposal ability of signal.In implementation process, each step of the above method can pass through processing
The integrated logic circuit of hardware in device 401 or the instruction of software form are completed.Above-mentioned processor 401 can be general place
Manage device, including central processing unit (Central Processing Unit, CPU), network processing unit (Network
Processor, NP) etc.；It can also be digital signal processor (Digital Signal Processing, DSP), special collection
Into circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) either other PLDs, discrete gate or transistor logic,
Discrete hardware components.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor can also be any conventional processor etc..
Processor 401, for obtaining the first cooperation transmitting collection of user equipment, and at least one first calibration set is obtained,
Each first calibration set at least one first calibration set includes at least two cells, and wantonly two at least two cell
Joint channel correction is completed between individual cell, the first cooperation transmitting collection includes providing cooperation transmitting for the user equipment
At least one cell set.
Processor 401 is additionally operable to the first cooperation transmitting collection of the user equipment according to acquisition and at least one first calibration set
Determine the second cooperation transmitting collection of user equipment.
Transmitter 403, the second cooperation transmitting set pair user equipment of the user equipment for being determined according to processor 401 enter
Row JT coherent transmittings.
Base station not only obtains the first cooperation transmitting collection of user equipment in embodiments of the present invention, it is also contemplated that in the relevant hairs of JT
Need to complete the situation that joint channel corrects between multiple cell when penetrating, obtain at least one the first school for having completed joint channel correction
Positive collection, wherein the first cooperation transmitting integrates launches collection or semi-static cooperation transmitting collection or dynamic cooperative transmitting collection as static cooperation.Cause
This, determines the second cooperation transmitting collection come to the use according to the first of user equipment the cooperation transmitting collection and at least one first calibration set
Family equipment carries out JT coherent transmittings, it is possible to increase combines the gain of transmission signal.
Base station 400 can realize each step for being related to base station in Fig. 1 and Fig. 2 method, to avoid repeating, no longer retouch in detail
State.
Alternatively, as one embodiment, the first cooperation transmitting of user equipment integrate can be static cooperation transmitting collect or
Semi-static cooperation transmitting collection or dynamic cooperative transmitting collection.
Static cooperation transmitting collection refers to：Once (collaborative network can include multiple base stations, a base to collaborative network for deployment
Multiple cells can be had by standing down, can have Multiple Small Cell Sites or micro-base station or RRU under a base station in other words), to some
UE carries out multiple cells of JT coherent transmittings (such as combine multiple cells and launch data service for the UE) by the serving cell of the UE
Base station determined according to deployment scenario, and once it is determined that, to the UE carry out JT coherent transmittings multiple cells no longer change.
It is Cell 0 to Cell5 respectively, the base station of some UE serving cell is should for example, having multiple cells in collaborative network deployment
The cell that UE determines to carry out JT coherent transmittings is Cell 0, Cell 2 and Cell 4, and is no longer changed.
Semi-static cooperation transmitting collection：Collaborative network is once dispose that (collaborative network can include multiple base stations, under a base station
Can have multiple cells), to some UE carry out JT coherent transmittings multiple cells by the UE serving cell base station according to
Metrical information that deployment scenario and the UE are reported determines.It is Cell 0 respectively for example, having multiple cells in collaborative network deployment
To Cell5.Starting stage, the base station of some UE serving cell (Cell 1) determine to carry out the cell of JT coherent transmittings for the UE
It is Cell 0, Cell 2 and Cell 4.Sometime, the survey that the UE reports to base station report measurement information, base station according to the UE
It is Cell 2, Cell 3 and Cell 5 to measure the cell that information determines, now, base station can select Cell 2, Cell 3 and Cell
5 be that the UE carries out JT coherent transmittings.Certainly, base station can also determine to carry out the small of JT coherent transmittings using polling mode as the UE
Area, determine that Cell 0, Cell 1 and Cell 2 determine to carry out JT coherent transmittings, over time, base for the UE when such as starting
Stand and determine that Cell 3, Cell 4 and Cell 5 are that the UE determines to carry out JT coherent transmittings.
The static cooperation transmitting collection of all UE under same serving cell can be the same, or under same serving cell
All UE semi-static cooperation transmitting collection can be the same.
Dynamic cooperative transmitting collection：The metrical information that base station reports according to UE carries out the more of JT coherent transmittings to be defined as the UE
Individual cell, that is to say, that determine which cell carries out JT coherent transmittings by UE.For example, have in collaborative network deployment multiple
Cell, be Cell 0 to Cell5 respectively, metrical information that base station reports according to UE (RSRP for the serving cell that such as UE is reported and
The RSRP of neighbor cell difference is less than 5dB) be defined as the UE carry out JT coherent transmittings cell be Cell 2, Cell 4 and Cell
5, then base station determines that Cell 2, Cell 4 and Cell 5 carry out JT coherent transmittings for the UE, and different UE reports according to itself
Metrical information, cooperation transmitting collection can be with different.
It should be noted that the metrical information of UE feedbacks can be including at least one following：RSRP、RSRQ、CQI、SINR、
BLER etc..It should be understood that the embodiment of the present invention is not limited to this.
Alternatively, as another embodiment, when the first calibration set of acquisition only has one, processor 401 is specifically used
In：The common factor of first cooperation transmitting collection of the user equipment of acquisition and first calibration set is defined as the second of user equipment
Cooperation transmitting collection.
Alternatively, as another embodiment, when the first calibration set of acquisition has multiple, processor 401 is specifically used for：
The union of multiple first calibration sets of acquisition is defined as the second calibration set, by the first cooperation transmitting collection of the user equipment of acquisition
It is defined as the second cooperation transmitting collection of user equipment with the common factor of the second calibration set.
Alternatively, it is specifically used for as another embodiment, processor 401：Obtained from network controller at least one
First calibration set；Or it is specifically used for：At least one first calibration set is obtained from the base station of reference cell, reference cell is use
The cell that first cooperation transmitting of family equipment is concentrated.
Alternatively, it is specifically used for as another embodiment, processor 401：Obtain at least one comprising user equipment clothes
First calibration set of cell of being engaged in.
Alternatively, as another embodiment, when participating in, JT coherent transmittings are multiple user equipmenies and user equipment is more
For the moment, transmitter 403 is specifically used for individual user equipment：The second cooperation hair according to corresponding to multiple user equipmenies of acquisition difference
The common factor for penetrating collection carries out JT coherent transmittings to user equipment.
Alternatively, processor 401 can be also used for confirming whether user equipment needs to carry out JT coherent transmittings, pass through reception
The metrical information for the user equipment feedback that device 404 receives is judged.As some user equipment feed back serving cell CQI or
When RSRP is less than some threshold value, processor 401 can be also used for determining that the user equipment is edge customer equipment, therefore, really
Recognizing the user equipment needs to carry out JT coherent transmittings.
Alternatively, processor 401 can be also used for estimating that use the second cooperation transmitting to integrate is concerned with as user equipment progress JT
Whether the signal gain of transmitting is more than the signal gain of other non-JT coherent transmission modes.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (12)
- A kind of 1. determination method for the transmitting collection that cooperates, it is characterised in that including：The first cooperation transmitting collection of user equipment is obtained, and obtains at least one first calibration set, at least one first school Each first calibration set just concentrated includes at least two cells, complete between any two cells at least two cell Corrected into joint channel, the first cooperation transmitting collection includes providing at least one cell of cooperation transmitting for the user equipment Set；The user equipment is determined according to the first of the user equipment the cooperation transmitting collection and at least one first calibration set Second cooperation transmitting collection；Joint is carried out according to user equipment described in the second of the user equipment the cooperation transmitting set pair and sends JT coherent transmittings；Wherein, at least one first calibration set of acquisition, including：At least one first calibration set is obtained from network controller；OrAt least one first calibration set is obtained from the base station of reference cell, the reference cell is the user equipment The cell that first cooperation transmitting is concentrated.
- 2. the method as described in claim 1, it is characterised in that at least one first calibration set is one first correction Collection, it is described to determine that the user sets according to the first of the user equipment the cooperation transmitting collection and at least one first calibration set The second standby cooperation transmitting collection, including：The common factor of first cooperation transmitting collection of the user equipment and one first calibration set is defined as into the user to set The second standby cooperation transmitting collection.
- 3. the method as described in claim 1, it is characterised in that at least one first calibration set is the multiple first corrections Collection, it is described to determine that the user sets according to the first of the user equipment the cooperation transmitting collection and at least one first calibration set The second standby cooperation transmitting collection, including：The union of the multiple first calibration set is defined as the second calibration set；The common factor of first cooperation transmitting collection of the user equipment and second calibration set is defined as the user equipment Second cooperation transmitting collection.
- 4. the method as described in claim any one of 1-3, it is characterised in that described to obtain at least one first calibration set, bag Include：Obtain at least one the first calibration set for including the user equipment serving cell.
- 5. the method as described in claim any one of 1-3, it is characterised in that when participation JT coherent transmittings are multiple user equipmenies It is described that set pair is launched according to the second of the user equipment the cooperation and the user equipment is the multiple user equipment a period of time The user equipment carries out JT coherent transmittings, including：The common factor of the second cooperation transmitting collection carries out JT phases to the user equipment according to corresponding to the multiple user equipment difference Dry transmitting.
- 6. the method as described in claim any one of 1-3, it is characterised in that the first cooperation of the user equipment launches collection and is Static cooperation transmitting collection or semi-static cooperation transmitting collection or dynamic cooperative transmitting collection.
- A kind of 7. base station, it is characterised in that including：Acquiring unit, for obtaining the first cooperation transmitting collection of user equipment, and obtain at least one first calibration set, it is described extremely Each first calibration set in few first calibration set includes at least two cells, any two at least two cell Joint channel correction is completed between cell, each first calibration set includes at least two cells, the first cooperation hair Penetrating collection includes providing the set of at least one cell of cooperation transmitting for the user equipment；Determining unit, for the user equipment that is obtained according to the acquiring unit the first cooperation transmitting collection and it is described at least One the first calibration set determines the second cooperation transmitting collection of the user equipment；Transmitter unit, for user described in the second cooperation transmitting set pair of the user equipment determined according to the determining unit Equipment carries out joint and sends JT coherent transmittings；Wherein, the acquiring unitIt is specifically used for：At least one first calibration set is obtained from network controller；OrIt is specifically used for：At least one first calibration set is obtained from the base station of reference cell, the reference cell is described The cell that first cooperation transmitting of user equipment is concentrated.
- 8. base station as claimed in claim 7, it is characterised in thatThe determining unit is specifically used for：First cooperation transmitting collection of the user equipment that the acquiring unit is obtained and institute The common factor for stating first calibration set is defined as the second cooperation transmitting collection of the user equipment.
- 9. base station as claimed in claim 7, it is characterised in thatThe determining unit is specifically used for：The union at least one first calibration set that the acquiring unit is obtained determines For the second calibration set；First cooperation transmitting collection of the user equipment that the acquiring unit is obtained and second calibration set Common factor be defined as the user equipment second cooperation transmitting collection.
- 10. the base station as described in claim any one of 7-9, it is characterised in thatThe acquiring unit is specifically used for：Obtain at least one the first calibration set for including the user equipment serving cell.
- 11. the base station as described in claim any one of 7-9, it is characterised in that set when participating in JT coherent transmittings for multiple users Standby and described user equipment is the multiple user equipment a period of time,The transmitter unit is specifically used for：Second according to corresponding to the multiple user equipment difference that the acquiring unit obtains The common factor of cooperation transmitting collection carries out JT coherent transmittings to the user equipment.
- 12. the base station as described in claim any one of 7-9, it is characterised in that the first cooperation transmitting collection of the user equipment Launch collection or semi-static cooperation transmitting collection or dynamic cooperative transmitting collection for static cooperation.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120630.8A CN104104420B (en) | 2013-04-09 | 2013-04-09 | The determination method of cooperation transmitting collection and base station |
| PCT/CN2014/074986 WO2014166388A1 (en) | 2013-04-09 | 2014-04-09 | Method and base station for determining coordinated transmission set |
| KR1020157030072A KR101729594B1 (en) | 2013-04-09 | 2014-04-09 | Method for determining coordinated transmission set and base station |
| JP2016506768A JP6208845B2 (en) | 2013-04-09 | 2014-04-09 | Method and base station for determining a coordinated transmission set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120630.8A CN104104420B (en) | 2013-04-09 | 2013-04-09 | The determination method of cooperation transmitting collection and base station |
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| CN104104420A CN104104420A (en) | 2014-10-15 |
| CN104104420B true CN104104420B (en) | 2018-02-06 |
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| JP (1) | JP6208845B2 (en) |
| KR (1) | KR101729594B1 (en) |
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| CN106572435B (en) * | 2015-10-08 | 2019-11-12 | 华为技术有限公司 | The method and apparatus of dispatch terminal equipment |
| WO2017214981A1 (en) | 2016-06-17 | 2017-12-21 | 华为技术有限公司 | Channel correction method and device and communication system |
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| CN102098091A (en) * | 2011-01-10 | 2011-06-15 | 东南大学 | Self-adaptive switching method of multi-cell cooperative downward transmission modes |
| EP2381587A1 (en) * | 2008-12-24 | 2011-10-26 | China Mobile Communications Corporation | Method and device for determining antenna cooperation set, method and device for determining base station cooperation set |
| CN102656938A (en) * | 2009-08-14 | 2012-09-05 | 捷讯研究有限公司 | Frame structure and control signaling for downlink coordinated multi-point (CoMP) transmission |
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| US8983479B2 (en) * | 2009-04-28 | 2015-03-17 | Electronics And Telecommunications Research Institute | Method for transmitting dedicated reference signal, and method for receiving dedicated reference signal |
| US9935692B2 (en) * | 2009-08-07 | 2018-04-03 | Nec Corporation | Radio communicating system, radio communicating method, radio station, control station and program |
| WO2011029458A1 (en) * | 2009-09-10 | 2011-03-17 | Fujitsu Limited | Cell selection for mimo transmission |
| KR101559800B1 (en) * | 2009-10-25 | 2015-10-13 | 엘지전자 주식회사 | The method for transmitting feedback information and terminal device in wireless communication system performing CoMP operation |
| WO2011052067A1 (en) * | 2009-10-30 | 2011-05-05 | 富士通株式会社 | Base station, communication method and mobile station |
| US8995400B2 (en) * | 2011-02-11 | 2015-03-31 | Qualcomm Incorporated | Method and apparatus for enabling channel and interference estimations in macro/RRH system |
| JP5437310B2 (en) * | 2011-05-02 | 2014-03-12 | 株式会社Ｎｔｔドコモ | Radio base station apparatus, mobile terminal apparatus, radio communication method, and radio communication system |
| CN102891708A (en) * | 2012-09-17 | 2013-01-23 | 华为技术有限公司 | Correction method, device and system for transceiving channel response, and base band unit (BBU) |
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- 2014-04-09 WO PCT/CN2014/074986 patent/WO2014166388A1/en active Application Filing
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2381587A1 (en) * | 2008-12-24 | 2011-10-26 | China Mobile Communications Corporation | Method and device for determining antenna cooperation set, method and device for determining base station cooperation set |
| CN102656938A (en) * | 2009-08-14 | 2012-09-05 | 捷讯研究有限公司 | Frame structure and control signaling for downlink coordinated multi-point (CoMP) transmission |
| CN102098091A (en) * | 2011-01-10 | 2011-06-15 | 东南大学 | Self-adaptive switching method of multi-cell cooperative downward transmission modes |
Also Published As
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| JP6208845B2 (en) | 2017-10-04 |
| KR101729594B1 (en) | 2017-04-24 |
| KR20150133252A (en) | 2015-11-27 |
| WO2014166388A1 (en) | 2014-10-16 |
| CN104104420A (en) | 2014-10-15 |
| JP2016518781A (en) | 2016-06-23 |
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