CN104581961B - A kind of down collaboration multi-point joint transmission method and device - Google Patents
A kind of down collaboration multi-point joint transmission method and device Download PDFInfo
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- CN104581961B CN104581961B CN201510047114.6A CN201510047114A CN104581961B CN 104581961 B CN104581961 B CN 104581961B CN 201510047114 A CN201510047114 A CN 201510047114A CN 104581961 B CN104581961 B CN 104581961B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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Abstract
The invention discloses a kind of down collaboration multi-point joint transmission method and devices, to realize that cooperation cell is used for transmission the resource of collaboration data, the user equipment in cooperation cell can be distributed to simultaneously, or the cooperation transmission for multiple main plots, improve the handling capacity of cooperation cell, and increase the flexibility of cooperation cell scheduling so that CoMP JT technologies are applicable not only to the relatively low situation of cooperation cell load, while being suitable for the higher situation of cooperation cell load.The method includes：Cooperation cell is matched for user equipment (UE), obtains pairing UE, wherein at least there is the UE for needing cooperation transmission in two UE, including the main plot and UE in the cooperation cell, or the UE including needing cooperation transmission in one or more main plots in the pairing UE；The cooperation cell is to pairing UE transmission datas, wherein there are intersections for running time-frequency resource to used in the different UE transmission datas matched in UE.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of down collaboration multi-point joint transmission method and devices.
Background technology
Referring to Fig. 1, downlink coordinating multiple points joint transmission (Coordinated MultiPoint Joint
Transmission, CoMP JT) technology, i.e., on the same running time-frequency resource, multiple transmission point transmits number to a UE simultaneously
According to the signal from multiple transmission point is superimposed in the air so that receiving end signal enhances, while interference source is reduced, and interference dies down.
Referring to Fig. 2, the resource of cooperation sending point (cell) is divided into two parts by traditional downlink CoMP JT technologies：
Cooperate resource：I.e. cooperation sends cell for the resource to main sending point (cell) owning user transmission data, is somebody's turn to do
Resource sends the copy of a main plot transmission data, since main plot is different with the cell ID of cooperation cell, this data pair
This may be needed to punch with the public reference signal of cooperative transmission cell (Common Reference Signal, CRS), this
It is known as cooperation transmission data by the data of main plot and cooperation cell common transport.
Dedicated resources：I.e. cooperation sends the resource that cell is used for this cell owning user transmission data.
Therefore, traditional downlink CoMP JT technologies reduce cooperation cell private resource, to reduce gulping down for this cell
The amount of spitting, and limit the flexibility of cooperation cell scheduling.
It is cooperated below with two cells, each cell downlink has the Release 9 that 8 antennas carry out data transmission
For version, existing LTE downlinks CoMP JT transmission plans include：
Main plot uplink receiving end judges that the user sets according to the measurement reported result of the channel situation of each user equipment
Whether standby be CoMP user equipment, the CoMP user equipment in this way then measurement according to neighboring community to the user device channel situation
As a result cooperation cell is selected for it.Main plot sends cooperation request to cooperation cell, the data that cooperation is sent, sends the object occupied
Manage the information such as resource block (Physical Resource Block, PRB).If main plot is responded in cooperation cell agrees to that cooperation is asked
It asks, then user equipment is transmitted using JT thus.
The 16 antenna united beam form-endowings in main plot and cooperation cell downlink end carry out downlink transfer or main plot and
8, cooperation cell downlink end antenna difference wave beam forming carries out downlink transfer.
Cooperation cell sends the copy of a main plot transmission data in running time-frequency resource identical with main plot, since master is small
Area is different with the cell ID of cooperation cell, this data copy may need to punch with the CRS of cooperative transmission cell, data hair
The user equipment for being subordinate to main plot is given, this user equipment can be one or more.
The transmission of cooperation transmission data is using the antenna port five of transmission mode seven or the antenna port seven of transmission mode eight
Or/and eight, and in corresponding physical layer resources block position transmission user equipment special reference signal (UE-specific
Reference Signal, URS), the position of this URS and sequence are determined according to the physical-layer cell identifier (PCI) of main plot, right
It is transmitted after URS figurations.
It is sent out by the Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) of main plot
Send the resource of the cooperation transmission data of distribution.
However, existing downlink CoMP JT technologies, it is small that cooperation cell for the resource of cooperation transmission is only assigned to a master
The user equipment in area uses, therefore reduces cooperation cell private resource, reduces the handling capacity of this cell, and limit association
Make the flexibility of cell scheduling.
Invention content
An embodiment of the present invention provides a kind of down collaboration multi-point joint transmission method and devices, to realize cooperation cell
It is used for transmission the resource of collaboration data, the user equipment in cooperation cell can be distributed to simultaneously, or for multiple main plots
Cooperation transmission, improves the handling capacity of cooperation cell, and increases the flexibility of cooperation cell scheduling so that CoMP JT skills
Art is applicable not only to the relatively low situation of cooperation cell load, while being suitable for the higher situation of cooperation cell load.
A kind of down collaboration multi-point joint transmission method provided in an embodiment of the present invention, including：
Cooperation cell is matched for user equipment (UE), obtains pairing UE, wherein at least there are two UE in the pairing UE, packet
The UE and the UE in the cooperation cell that cooperation transmission is needed in main plot are included, or including needing to assist in one or more main plots
Make the UE transmitted；
The cooperation cell is to pairing UE transmission datas, wherein when to used in the different UE transmission datas matched in UE
There are intersections for frequency resource.
In this way, cooperation cell is matched for UE, to pairing UE transmission datas, wherein the different UE hairs into pairing UE
Sending running time-frequency resource used in data, there are intersections, wherein at least there are two UE, including main plot domestic demand in pairing UE
The UE and the UE in the cooperation cell of cooperation transmission, or the UE including needing cooperation transmission in multiple main plots are wanted, to real
The resource that cooperation cell is used for transmission collaboration data is showed, the user equipment in cooperation cell can have been distributed to simultaneously, or be used for
The cooperation transmission of multiple main plots, improves the handling capacity of cooperation cell, and increases the flexibility of cooperation cell scheduling, makes
It obtains CoMP JT technologies and is applicable not only to the relatively low situation of cooperation cell load, while being suitable for the higher feelings of cooperation cell load
Condition.
Preferably, when the pairing UE includes the UE in the UE and the cooperation cell for needing cooperation transmission in main plot,
The cooperation cell is matched for UE, obtains pairing UE, including：
The cooperation cell is according to the Sounding Reference Signal for needing the first UE of cooperation transmission to report in main plot
The SRS that the 2nd UE in SRS and the cooperation cell is reported calculates the channel function and second of the first UE and cooperation cell
The channel function of UE and cooperation cell, and according to the channel function and the 2nd UE of the first UE and cooperation cell and cooperation cell
Channel function calculates the channel relevancy of the first UE and the 2nd UE；
When the channel relevancy is less than predetermined threshold value, determine that the first UE and the 2nd UE is pairing UE.
Preferably, when the pairing UE includes needing the UE of cooperation transmission in one or more main plots, the cooperation
Cell is matched for UE, obtains pairing UE, including：
The cooperation cell is calculated according to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots
The channel function of every a UE and cooperation cell in the multiple UE, and any two UE being directed in the multiple UE, according to
The channel function of two UE and cooperation cell calculate the channel relevancy of two UE, are preset when the channel relevancy is less than
When threshold value, determine that two UE are pairing UE.
Preferably, while the cooperation cell is to pairing UE transmission datas, user equipment specific reference signals are also sent
URS。
Preferably, while the cooperation cell is to pairing UE transmission datas, user equipment specific reference signals are also sent
URS is specifically included：
The cooperation cell using transmission mode seven antenna port five or transmission mode eight antenna port seven or/and
Antenna port eight, transmission data and user equipment specific reference signals URS give pairing UE.
Preferably, the data and URS are the data and URS after wave beam forming.
A kind of down collaboration multi-point joint transmission device provided in an embodiment of the present invention, including：
First unit obtains pairing UE, wherein in the pairing UE extremely for being matched for user equipment (UE) in cooperation cell
There is the UE that cooperation transmission is needed in two UE, including the main plot and UE in the cooperation cell less, or including one or more
The UE of cooperation transmission is needed in a main plot；
Second unit is used in the cooperation cell to pairing UE transmission datas, wherein the different UE hairs into pairing UE
Sending running time-frequency resource used in data, there are intersections.
Preferably,
When the pairing UE includes the UE in the UE and the cooperation cell for needing cooperation transmission in main plot, described first
Unit is specifically used for：
According to the Sounding Reference Signal SRS and the cooperation for needing the first UE of cooperation transmission to report in main plot
The SRS that the 2nd UE in cell is reported calculates channel function and the 2nd UE and the cooperation cell of the first UE and cooperation cell
Channel function, and calculate the according to the channel function and the 2nd UE of the first UE and cooperation cell and the channel function of cooperation cell
The channel relevancy of one UE and the 2nd UE；
When the channel relevancy is less than predetermined threshold value, determine that the first UE and the 2nd UE is pairing UE.
Preferably,
When the pairing UE includes needing the UE of cooperation transmission in one or more main plots, the first unit is specific
For：
According to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots, calculate in the multiple UE
Every a UE and cooperation cell channel function, and for any two UE in the multiple UE, according to two UE and association
The channel function for making cell calculates the channel relevancy of two UE, and when the channel relevancy is less than predetermined threshold value, determining should
Two UE are pairing UE.
Preferably, while the second unit is to pairing UE transmission datas, user equipment specific reference signals are also sent
URS。
Preferably, the second unit is specifically used for：
Using the antenna port five of transmission mode seven or the antenna port seven of transmission mode eight or/and antenna port eight, hair
Data and user equipment specific reference signals URS is sent to give pairing UE.
Preferably, the data and URS are the data and URS after wave beam forming.
Description of the drawings
Fig. 1 is that CoMP JT in the prior art transmit schematic diagram；
Fig. 2 is that cooperation cell in the prior art is using identical running time-frequency resource to the UE for being subordinate to main plot with main plot
The schematic diagram of transmission data；
Fig. 3 is a kind of flow diagram of down collaboration multi-point joint transmission method provided in an embodiment of the present invention；
Fig. 4 is a kind of cooperation cell provided in an embodiment of the present invention and main plot collaborative network schematic diagram；
Fig. 5 is a kind of cooperation cell provided in an embodiment of the present invention and main plot cooperation transmission schematic diagram；
Fig. 6 is another cooperation cell provided in an embodiment of the present invention and main plot cooperation transmission schematic diagram；
Fig. 7 is a kind of structural schematic diagram of down collaboration multi-point joint transmission device provided in an embodiment of the present invention.
Specific implementation mode
An embodiment of the present invention provides a kind of down collaboration multi-point joint transmission method and devices, to realize cooperation cell
It is used for transmission the resource of collaboration data, the user equipment in cooperation cell can be distributed to simultaneously, or for multiple main plots
Cooperation transmission, improves the handling capacity of cooperation cell, and increases the flexibility of cooperation cell scheduling so that CoMP JT skills
Art is applicable not only to the relatively low situation of cooperation cell load, while being suitable for the higher situation of cooperation cell load.
The embodiment of the present invention utilizes multiple-input and multiple-output (Multiple-Input Multiple-Output, MIMO) channel
Property, you can realize that the number of data streams of transmitting simultaneously is less than or equal to and meet the order (rank) of channel, it is small cooperating
Indefinite differentiation cooperation resource and private resource, i.e., when cooperation transmission is done in cooperation cell, be used for the resource of cooperation transmission in area
When cooperation transmission is done in the user device transmissions data that still can be used in this cell or cooperation cell, for cooperation transmission
Resource can be used for the user device transmissions data in two or more main plots.This improves handling up for whole system
Amount.
Referring to Fig. 3, a kind of down collaboration multi-point joint transmission method that the embodiment of the present invention proposes, including：
S101, cooperation cell are matched for user equipment (UE), obtain pairing UE, wherein at least there is two in the pairing UE
The UE and the UE in the cooperation cell of cooperation transmission are needed in UE, including main plot, or including in one or more main plots
Need the UE of cooperation transmission；
S102, the cooperation cell are to pairing UE transmission datas, wherein the different UE transmission datas into pairing UE are made
There are intersections for running time-frequency resource.
I.e. for the UE in same group, cooperation cell is transfer resource used by wherein every UE transmission datas, can be with
There are intersections, can be identical resources, and there may also be the identical resources in part.That is, small cooperating
Indefinite differentiation cooperation resource and private resource, i.e., when cooperation transmission is done in cooperation cell, be used for the resource of cooperation transmission in area
When cooperation transmission is done in the user device transmissions data that still can be used in this cell or cooperation cell, for cooperation transmission
Resource can be used for the user device transmissions data in two or more main plots.This improves handling up for whole system
Amount.
Preferably, when the pairing UE includes the UE in the UE and the cooperation cell for needing cooperation transmission in main plot,
The cooperation cell is matched for UE, obtains pairing UE, including：
The cooperation cell is according to the Sounding Reference Signal for needing the first UE of cooperation transmission to report in main plot
The SRS that the 2nd UE in SRS and the cooperation cell is reported calculates the channel function and second of the first UE and cooperation cell
The channel function of UE and cooperation cell, and according to the channel function and the 2nd UE of the first UE and cooperation cell and cooperation cell
Channel function calculates the channel relevancy of the first UE and the 2nd UE；When the channel relevancy is less than predetermined threshold value, first is determined
UE and the 2nd UE is pairing UE.
Wherein, the value range of the predetermined threshold value for example can be a real number in 0~0.7.
As to how the cooperation cell is joined according to the channel detection for needing the first UE of cooperation transmission to report in main plot
Examine the SRS that the 2nd UE in signal SRS and the cooperation cell is reported, calculate the channel function of the first UE and cooperation cell with
And the 2nd UE and cooperation cell channel function, may be used the prior art realization, details are not described herein.
Preferably, when the pairing UE includes needing the UE of cooperation transmission in one or more main plots, the cooperation
Cell is matched for UE, obtains pairing UE, including：
The cooperation cell is calculated according to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots
The channel function of every a UE and cooperation cell in the multiple UE, and any two UE being directed in the multiple UE, according to
The channel function of two UE and cooperation cell calculate the channel relevancy of two UE, are preset when the channel relevancy is less than
When threshold value, determine that two UE are pairing UE.
Wherein, the value range of the predetermined threshold value for example can be a real number in 0~0.7.
As to how according to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots, described in calculating
Prior art realization may be used in the channel function of every a UE and cooperation cell in multiple UE, and details are not described herein.
In addition, it is necessary to explanation, in the embodiment of the present invention, can also directly select by main plot UE and cooperating
Randomly selected any UE is used as a pair of UE in cell, or directly using two UE in main plot as a pair of UE, the two
UE can come from same main plot and can be from different main plots.Multiple UE can be that two UE can also be more
A UE.
Preferably, the cooperation cell to pairing UE transmission datas, including：
The cooperation cell using transmission mode seven antenna port five or transmission mode eight antenna port seven or/and
Antenna port eight, transmission data and user equipment specific reference signals (UE-specific Reference Signals,
URS pairing UE) is given.
Preferably, the data and URS are the data and URS after wave beam forming.It is specific that how wave beam forming belongs to
The prior art, details are not described herein.
The embodiment of the present invention proposes new LTE downlink CoMP JT transmission plans, carries out cooperation transmission with two cells, often
A cell downlink is transmitted using 8 antennas, for 9 versions of Release, is specifically described as follows：
Main plot uplink receiving end judges the user equipment according to the measurement reported result of each user device channel situation
Whether it is CoMP user equipment, CoMP user equipment in this way, then according to neighboring community to the CoMP user device channel situation
Measurement result is that the CoMP user equipment selects cooperation cell.Main plot sends cooperation request to the cooperation cell, wherein carrying
It needs the data of cooperation transmission, send the information such as the PRB that data needs occupy.If main plot is responded in cooperation cell agrees to association
It asks, then main plot and cooperation cell determination can be the CoMP user equipment using CoMP JT transmission.
User equipment (the i.e. CoMP user of cooperation transmission is needed in cooperation cell reception one, two or more main plots
Equipment) Sounding Reference Signal (Sounding Reference Signal, SRS) and this cell user equipment
SRS determines compound channel according to these SRS.The i.e. described cooperation cell is according on the first UE for needing cooperation transmission in main plot
The SRS that the Sounding Reference Signal SRS and the 2nd UE in the cooperation cell of report are reported, calculate the first UE with cooperate it is small
The channel function of the channel function in area and the 2nd UE and cooperation cell.
Referring to Fig. 4, it is assumed that the channel H21 between cooperation cell and UE1 and the channel H22 shapes between cooperation cell and UE2
At a compound channel, the channel H21 between cooperation cell and UE1 and the channel H23 between cooperation cell and UE3 form another
A compound channel.Wherein, UE1 belongs to main plot 1, and UE2 belongs to cooperation cell, and UE3 belongs to main plot 2.
Cooperation cell judges the space isolation between user equipment according to compound channel, the use for selecting space isolation big
Family equipment is matched.The size of space isolation can utilize channel relevancy to weigh, that is, judge that UE1 and UE2 whether may be used
To match clock synchronization, using following formula：
In formula ()HIndicate conjugate transposition, | | | | expression takes norm.Channel relevancy C values are smaller, and space isolation is bigger.
A threshold value can be pre-set, if C values are less than predetermined threshold value, it is determined that otherwise UE1 and UE2, which is pairing UE, cannot match.
To matching UE, cooperation cell can pass pairing user equipment using the running time-frequency resource for overlapping or partially overlapping
Defeated, i.e. cooperation cell is to pairing UE transmission datas, wherein to running time-frequency resource used in the different UE transmission datas matched in UE
There are intersections, as shown in Figure 5.
Similarly, if cooperation cell receives the user equipment (i.e. CoMP user equipment) for needing cooperation transmission in two main plots
Sounding Reference Signal (Sounding Reference Signal, SRS), determine compound channel according to these SRS.I.e.
The cooperation cell calculates the multiple according to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots
The channel function of every a UE and cooperation cell in UE, and for any two UE in the multiple UE, according to two UE
With the channel function of cooperation cell, the channel relevancy of two UE is calculated.
With judge UE1 and UE2 whether be pairing UE similarly, however, it is determined that UE1 and UE3 may be pairing UE, then to pairing
UE, cooperation cell can utilize the running time-frequency resource for overlapping or partially overlapping to be transmitted pairing user equipment, i.e. cooperation cell
To pairing UE transmission datas, wherein running time-frequency resource used in different UE transmission datas into pairing UE is there are intersection,
As shown in Figure 6.
About the above cooperation cell to the process of pairing UE transmission datas, specific explanations are as follows：
Cooperation cell is in the copy for sending a main plot transmission data in identical running time-frequency resource with main plot.At this time
Main plot is one or more, for that can overlap or partially overlap to the running time-frequency resource of multiple main plot cooperation transmissions, such as Fig. 6
Shown, cooperation cell is frequency resource used by UE1 cooperation transmissions and is frequency resource part used by UE3 cooperation transmissions
It overlaps.
In addition, when the cell ID difference of main plot and cooperation cell, this data copy needs to punch with cooperative transmission
The CRS of cell, the data copy are sent to the user equipment for being subordinate to main plot, this user equipment can be one or more.Cooperation
Cell utilize certain running time-frequency resource, the running time-frequency resource can include cooperation resource or with cooperation resource overlap or for cooperate resource
A part, to the user equipment transmission data for being subordinate to cooperation cell, as shown in figure 5, cooperation cell is adopted by UE1 cooperation transmissions
Frequency resource partially overlaps with for frequency resource used by UE2 transmission datas.
8, main plot downlink end antenna united beam form-endowing carries out down collaboration transmission, association to CoMP user equipment
Make 8 antenna beam figurations of cell downlink transmitting terminal and coordination downlink transmission, cooperation cell downlink hair are carried out to CoMP user equipment
It penetrates the 8 antenna beam figurations in end and downlink transfer is carried out to the user equipment for being subordinate to cooperation cell.Cooperation cell (is used by cooperation resource
In the resource of cooperation transmission) and dedicated resources (resource for carrying out data transmission to this cell UE) intersection part, or make
The intersection part of resource for multiple main plot cooperation transmissions when carrying out wave beam forming, needs joint to consider two parts resource
Interfere with each other problem, such as force zero (Zero Forcing) or block diagonalization (Block may be used in transmitting terminal
Diagonalization) scheduling algorithm eliminates interference in advance, generates beamformin coefficient.
The transmission of cooperation transmission data is using the antenna port five of transmission mode seven or the antenna port seven of transmission mode eight
Or/and antenna port eight, and URS is transmitted in corresponding physical layer resources block position, the position of this URS and sequence can be according to masters
The physical-layer cell identifier (Physical-layer Cell Identitiy, PCI) of cell determines, to being transmitted after URS figurations.
This intra-cell users equipment is transmitted in cooperation cell, using the antenna port five of transmission mode seven or the antenna of transmission mode eight
Port seven or/and antenna port eight transmit, and transmit URS, the position of this URS and sequence in corresponding physical layer resources block position
It is determined according to the PCI of cooperation cell, to being transmitted after URS figurations.
The resource allocation of cooperation transmission data is by the PDCCH realizations of main plot, the distribution of the exclusive transfer resource in cooperation cell
It is realized by the PDCCH of cooperation cell.
Referring to Fig. 7, a kind of down collaboration multi-point joint transmission device provided in an embodiment of the present invention, including：
First unit 11 obtains pairing UE, wherein in the pairing UE for being matched for user equipment (UE) in cooperation cell
At least there is the UE that cooperation transmission is needed in two UE, including the main plot and UE in the cooperation cell, or including one or
The UE of cooperation transmission is needed in multiple main plots；
Second unit 12 is used in the cooperation cell to pairing UE transmission datas, wherein the different UE into pairing UE
There are intersections for resource when time-frequency used in transmission data.
Preferably,
When the pairing UE includes the UE in the UE and the cooperation cell for needing cooperation transmission in main plot, described first
Unit is specifically used for：
According to the Sounding Reference Signal SRS and the cooperation for needing the first UE of cooperation transmission to report in main plot
The SRS that the 2nd UE in cell is reported calculates channel function and the 2nd UE and the cooperation cell of the first UE and cooperation cell
Channel function, and calculate the according to the channel function and the 2nd UE of the first UE and cooperation cell and the channel function of cooperation cell
The channel relevancy of one UE and the 2nd UE；
When the channel relevancy is less than predetermined threshold value, determine that the first UE and the 2nd UE is pairing UE.
Preferably,
When the pairing UE includes needing the UE of cooperation transmission in one or more main plots, the first unit is specific
For：
According to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots, calculate in the multiple UE
Every a UE and cooperation cell channel function, and for any two UE in the multiple UE, according to two UE and association
The channel function for making cell calculates the channel relevancy of two UE, and when the channel relevancy is less than predetermined threshold value, determining should
Two UE are pairing UE.
Preferably, while the second unit is to pairing UE transmission datas, user equipment specific reference signals are also sent
URS。
Preferably, the second unit is specifically used for：
Using the antenna port five of transmission mode seven or the antenna port seven of transmission mode eight or/and antenna port eight, hair
Data and user equipment specific reference signals URS is sent to give pairing UE.
Preferably, the data and URS are the data and URS after wave beam forming.
Above a kind of down collaboration multi-point joint transmission device provided in an embodiment of the present invention, for example, being specifically as follows base
It stands；The first unit can be realized that second unit can also be realized by the processor with transmission-receiving function by processor, or
Person, the two units are realized by same processor.
In conclusion in technical solution provided in an embodiment of the present invention, cooperation cell judges that user sets according to compound channel
Standby space isolation, the user equipment for selecting space isolation big are matched.Cooperation cell can utilize coincidence or part
The running time-frequency resource of coincidence is transmitted pairing user equipment.Cooperation cell with the running time-frequency resource belonging to the same cells of main plot
Send the copy of a main plot transmission data.Main plot at this time is one or more, is passed for cooperating to multiple main plots
Defeated running time-frequency resource can overlap or partially overlap；Cooperation cell sends a main plot in running time-frequency resource identical with main plot
The copy of transmission data, the data are sent to the user equipment for being subordinate to main plot, this user equipment can be one or more.Together
When, cooperation cell utilizes certain running time-frequency resource, the running time-frequency resource that can include cooperation resource or overlap with cooperation resource or be
A part for the resource that cooperates, to the user equipment transmission data for being subordinate to cooperation cell；The transmission of cooperation transmission data is using transmission
The antenna port five of pattern seven or the antenna port seven or/and eight of transmission mode eight, and in corresponding physical layer resources block position
URS is transmitted, the position of this URS and sequence are determined according to the PCI of main plot, to being transmitted after URS figurations.Cooperation cell is to this cell
It is subordinate to user device transmissions, is passed using the antenna port five of transmission mode seven or the antenna port seven or/and eight of transmission mode eight
It is defeated, and URS is transmitted in corresponding physical layer resources block position, the position of this URS and sequence are determined according to the PCI of cooperation cell,
To being transmitted after URS figurations.
Technical solution provided in an embodiment of the present invention can reach following advantageous effect：
The resource that cooperation cell is used for transmission collaboration data can distribute to user equipment in cooperation cell simultaneously, improve
The handling capacity of cooperation cell, and increase the flexibility of cooperation cell scheduling.
The resource that cooperation cell is used for transmission collaboration data can be used for the cooperation transmissions of multiple main plots, improve network
Handling capacity, and increase the flexibility of scheduling.
Technical solution provided in an embodiment of the present invention so that downlink CoMP JT technologies are applicable not only to cooperation cell load
Relatively low situation, while being suitable for the higher situation of cooperation cell load.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of down collaboration multi-point joint transmission method, which is characterized in that this method includes：
Cooperation cell is matched for user equipment (UE), obtains pairing UE, wherein at least there are two UE, including master in the pairing UE
The UE and the UE in the cooperation cell of cooperation transmission are needed in cell, or including needing cooperation transmission in multiple main plots
UE；
The cooperation cell is to pairing UE transmission datas, wherein to time-frequency money used in the different UE transmission datas matched in UE
There are intersections in source, and, the transmission of cooperation transmission data uses the antenna port five or transmission mode eight of transmission mode seven
Antenna port seven or/and antenna port eight, and transmit URS, the position of this URS and sequence in corresponding physical layer resources block position
Row are determined according to the physical-layer cell identifier PCI of main plot；This intra-cell users equipment is transmitted in cooperation cell, using transmission mould
The antenna port five of formula seven or the transmission of the antenna port seven of transmission mode eight or/and antenna port eight, and in corresponding physical layer
Resource block location transmits URS, the position of this URS and sequence are determined according to the PCI of cooperation cell；Wherein, cooperation transmission data
Resource allocation is realized that the distribution of the exclusive transfer resource in cooperation cell is realized by the PDCCH of cooperation cell by the PDCCH of main plot.
2. according to the method described in claim 1, it is characterized in that, when the pairing UE includes needing cooperation transmission in main plot
UE and the cooperation cell in UE when, the cooperation cell be UE match, obtain match UE, including：
The cooperation cell according to the Sounding Reference Signal SRS for needing the first UE of cooperation transmission to report in main plot, with
And the SRS that the 2nd UE in the cooperation cell is reported, channel function and the 2nd UE and the association of the first UE of calculating and cooperation cell
Make the channel function of cell, and the channel letter of the channel function and the 2nd UE and cooperation cell according to the first UE and cooperation cell
Number calculates the channel relevancy of the first UE and the 2nd UE；
When the channel relevancy is less than predetermined threshold value, determine that the first UE and the 2nd UE is pairing UE.
3. according to the method described in claim 1, it is characterized in that, when the pairing UE includes one or more main plots domestic demand
When wanting the UE of cooperation transmission, the cooperation cell is matched for UE, obtains pairing UE, including：
The cooperation cell is according to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots, described in calculating
The channel function of every a UE and cooperation cell in multiple UE, and for any two UE in the multiple UE, according to this two
The channel function of a UE and cooperation cell calculate the channel relevancy of two UE, when the channel relevancy is less than predetermined threshold value
When, determine that two UE are pairing UE.
4. according to the method described in claim 1, it is characterized in that, the data and URS be data after wave beam forming and
URS。
5. a kind of down collaboration multi-point joint transmission device, which is characterized in that the device includes：
First unit obtains pairing UE, wherein at least being deposited in the pairing UE for being matched for user equipment (UE) in cooperation cell
The UE and the UE in the cooperation cell of cooperation transmission are needed in two UE, including main plot, or including in multiple main plots
Need the UE of cooperation transmission；
Second unit is used in the cooperation cell to pairing UE transmission datas, wherein the different UE into pairing UE send number
According to used running time-frequency resource, there are intersections, and, the transmission of cooperation transmission data uses the antenna end of transmission mode seven
The antenna port seven or/and antenna port eight of mouth five or transmission mode eight, and transmitted in corresponding physical layer resources block position
The position of URS, this URS and sequence are determined according to the physical-layer cell identifier PCI of main plot；Cooperation cell is to this intra-cell users
Equipment is transmitted, and is passed using the antenna port five of transmission mode seven or the antenna port seven of transmission mode eight or/and antenna port eight
It is defeated, and URS is transmitted in corresponding physical layer resources block position, the position of this URS and sequence are determined according to the PCI of cooperation cell；
Wherein, the resource allocation of cooperation transmission data realizes that the distribution of the exclusive transfer resource in cooperation cell is by assisting by the PDCCH of main plot
The PDCCH for making cell is realized.
6. device according to claim 5, which is characterized in that
When the pairing UE includes the UE in the UE and the cooperation cell for needing cooperation transmission in main plot, the first unit
It is specifically used for：
According to the Sounding Reference Signal SRS and the cooperation cell for needing the first UE of cooperation transmission to report in main plot
The SRS that the 2nd interior UE is reported calculates the first UE and the channel function of cooperation cell and the channel of the 2nd UE and cooperation cell
Function, and the first UE is calculated according to the channel function and the 2nd UE of the first UE and cooperation cell and the channel function of cooperation cell
With the channel relevancy of the 2nd UE；
When the channel relevancy is less than predetermined threshold value, determine that the first UE and the 2nd UE is pairing UE.
7. device according to claim 5, which is characterized in that
When the pairing UE includes needing the UE of cooperation transmission in one or more main plots, the first unit is specifically used
In：
According to the SRS for needing multiple UE of cooperation transmission to report in one or more main plots, calculate every in the multiple UE
The channel function of one UE and cooperation cell, and for any two UE in the multiple UE, according to two UE with cooperate it is small
The channel function in area calculates the channel relevancy of two UE, when the channel relevancy is less than predetermined threshold value, determines this two
UE is pairing UE.
8. device according to claim 5, which is characterized in that the data and URS be the data after wave beam forming with
And URS.
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| CN111654459B (en) * | 2020-05-15 | 2023-06-23 | Oppo广东移动通信有限公司 | Signal processing method, terminal and storage medium |
| CN115278913A (en) * | 2022-07-20 | 2022-11-01 | 中国联合网络通信集团有限公司 | Resource allocation method and device, electronic equipment and storage medium |
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