CN103841644B - A kind of method, equipment and system for transmitting demodulated reference signal - Google Patents
A kind of method, equipment and system for transmitting demodulated reference signal Download PDFInfo
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Abstract
The invention discloses a kind of method, equipment and system for transmitting demodulated reference signal, for solving the problems, such as that existing multiple UE are accessed at the same time when can not ensure the orthogonality of each UE pilot tones.The method of the embodiment of the present invention includes：According to antenna port and the mapping table of the transmission number of plies, a correspondence with the transmission number of plies identical with each UE is selected respectively to carry out at least two UE of MU MIMO communications in same asset, and the antenna port in each correspondence of selection is respectively allocated to corresponding UE, wherein, different UE distributes different antenna ports；And notify the call number of selected correspondence to corresponding UE, and DMRS is sent by the antenna port in selected correspondence.The orthogonality of the DMRS for multiple UE that the embodiment of the present invention ensure that while access, improves power system capacity, and the UE of multiple and different transmission numbers of plies can be supported to access at the same time, so as to improve system flexibility.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of method, equipment and system for transmitting demodulated reference signal.
Background technology
In Long Term Evolution/long-term evolution upgrading（Long Term Evolution, LTE/Long TermEvolution-
Advanced, LTE-A）In system, demodulated reference signal（Demodulation ReferenceSignal, DMRS）It is mainly used for
To Physical Downlink Shared Channel（Physical Downlink SharedChannel, PDSCH）Carry out channel estimation and same
Step, so as to receiving terminal unsuccessful demodulation data.In cooperative multipoint transmission（Coordinated Multiple Point
Transmission, CoMP）In system, in order to improve spectrum efficiency, multi-user's multiple-input, multiple-output can be used（Multiple
User-Multiple Input MultipleOutput, MU-MIMO）Technical transmission data, i.e., the base station of multiple cells is at the same time
To multiple user equipmenies（User Equipment, UE）Data are transmitted, or receive the transmission data of multiple UE at the same time, and these
UE takes identical physical resource and is multiplexed.
In current LTE/LTE-A systems, downlink DMRS scramble sequence can be from multiple port transmissions of network side, usually
In the case of, network side can pass through 8 ports（Including port7~port14）Send DMRS scramble sequence.Wherein, 7,8,11,
13 } it is a group, is distinguished between port by code division multiplexing, { 9,10,12,14 } is a group, are answered between port by code division
With differentiation, distinguished between two different groups by frequency division multiplexing, it is shown in Figure 1.
UE is for demodulating data, it is necessary to know the configuration mode for the port that base station uses, base station is generally controlled by downlink
Signaling（Downlink Control Information, DCI）The port configuration mode used is notified to UE.At present,
The configuration mode ginseng of LTE/LTE-A system middle ports is shown in Table 1.
Table 1
Wherein, nSCID is DMRS scrambler initialisation identifications（SCrambling initialization Identity,
SCID）.When carrying out descending scheduling, base station can be currently employed using 3 bit datas instructions in descending control signaling
Port configuration mode.Under existing port configuration mode, it is for 1 UE for the transmission number of plies, can only at most realizes two
It is orthogonal between the DMRS of UE, when the quantity of the UE accessed at the same time is more than 2, since network side is equal for the port of different UE distribution
For port 7 ~ 8, therefore, when transmitting DMRS, the interference between different UE can sharply increase, and seriously affect the performance of system；It is right
For UE of the transmission number of plies more than 1, when the quantity of the UE accessed at the same time is N（N≥2）When, since network side is different UE points
The port matched somebody with somebody be port 7 ~（7+（N-1））, therefore, can not also ensure the orthogonality of the DMRS of multiple UE.
In conclusion under existing port configuration mode, when multiple user equipmenies access at the same time, it can not ensure each user
Orthogonality between the DMRS of equipment, when multiple MU-MIMO user equipment access at the same time, the interference between different user devices
It can sharply increase, significantly limit power system capacity.
The content of the invention
An embodiment of the present invention provides a kind of method, equipment and system for transmitting demodulated reference signal, for solving existing
Under some port configuration modes, when multiple user equipmenies access at the same time, it can not ensure orthogonal between the DMRS of each user equipment
The problem of property.
An embodiment of the present invention provides a kind of method for sending demodulated reference signal, including：
Network side is to enter in same asset progress multi-user according to antenna port and the mapping table of the transmission number of plies more
At least two user equipment (UE)s for having more MU-MIMO communications select a correspondence with the transmission number of plies identical with each UE respectively
Relation, and the antenna port in each correspondence of selection is respectively allocated to corresponding UE, wherein, different UE distribution is different
Antenna port；
The network side notifies call number of the selected correspondence in the mapping table to corresponding UE,
And demodulated reference signal DMRS is sent by the antenna port in selected correspondence.
An embodiment of the present invention provides a kind of method for receiving demodulated reference signal, including：
After the call number of network side transmission is received, according to antenna port and the mapping table of the transmission number of plies, determine
The corresponding correspondence of the call number, the antenna port distributed using obtaining network side as itself, wherein, the network side be
At least two UE that MU-MIMO communications are carried out in same asset distribute different antenna ports；
The demodulated reference signal DMRS of the network side transmission is received in the antenna port.
An embodiment of the present invention provides a kind of network side equipment, which includes：
Configuration module, for being that progress is more in same asset according to antenna port and the mapping table of the transmission number of plies
At least two user equipment (UE)s of user's multiple-input, multiple-output MU-MIMO communications select one respectively has the transport layer identical with each UE
Several correspondences, and the antenna port in each correspondence of selection is respectively allocated to corresponding UE, wherein, different UE
Distribute different antenna ports；
Sending module, for notifying call number of the selected correspondence in the mapping table to corresponding
UE, and demodulated reference signal DMRS is sent by the antenna port in selected correspondence.
An embodiment of the present invention provides a kind of user equipment, the user's equipment includes：
First receiving module, for after the call number of network side equipment transmission is received, according to antenna port and transmitting
The mapping table of the number of plies, determines the corresponding correspondence of the call number, the day distributed using obtaining network side equipment as itself
Line end mouth, wherein, the network side equipment distributes to carry out at least two user equipmenies of MU-MIMO communications in same asset
Different antenna ports；
Second receiving module, for receiving the demodulated reference signal of the network side equipment transmission in the antenna port
DMRS。
An embodiment of the present invention provides a kind of communication system, which includes：
Network side equipment, for being to be carried out in same asset according to antenna port and the mapping table of the transmission number of plies
At least two user equipment (UE)s of multi-user's multiple-input, multiple-output MU-MIMO communications select one with identical with each user equipment respectively
The transmission number of plies correspondence, and the antenna port in each correspondence of selection is respectively allocated to corresponding user and is set
It is standby；And notify call number of the selected correspondence in the mapping table to corresponding user equipment, and lead to
The antenna port crossed in selected correspondence sends demodulated reference signal DMRS；
User equipment, for after the call number of network side equipment transmission is received, according to antenna port and transmitting the number of plies
Mapping table, determine the corresponding correspondence of the call number, the antenna end distributed to obtain network side equipment as itself
Mouthful；And receive the DMRS of the network side transmission in the antenna port；
Wherein, the network side equipment divides to carry out at least two user equipmenies of MU-MIMO communications in same asset
With different antenna ports.
The embodiment of the present invention is according to antenna port and the mapping table of the transmission number of plies, to carry out MU- in same asset
At least two UE of MIMO communications select a correspondence with the transmission number of plies identical with each UE respectively, and by selection
Antenna port in each correspondence is respectively allocated to corresponding UE, wherein, different UE distributes different antenna ports；And
Call number of the selected correspondence in the mapping table is notified to corresponding UE, and passes through selected corresponding pass
Antenna port in system sends DMRS to UE；Since network side is that at least two of MU-MIMO communications is carried out in same asset
UE distributes different antenna ports, so as to ensure that at least two user equipmenies that MU-MIMO communications are carried out in same asset
DMRS orthogonality, drastically increase power system capacity, and since the embodiment of the present invention can also support at least two not
User equipment with the transmission number of plies carries out MU-MIMO communications in same asset, so as to improve system flexibility.
Brief description of the drawings
Fig. 1 is DMRS pattern schematic diagrames in background technology；
Fig. 2 is the method flow schematic diagram that the embodiment of the present invention sends demodulated reference signal；
Fig. 3 is the method flow schematic diagram that the embodiment of the present invention receives demodulated reference signal；
Fig. 4 is network side of the embodiment of the present invention and the interaction schematic diagram of user equipment side；
For the embodiment of the present invention, the first antenna port distributes schematic diagram to Fig. 5；
Fig. 6 distributes schematic diagram for second of antenna port of the embodiment of the present invention；
Fig. 7 is communication system architecture schematic diagram of the embodiment of the present invention；
Fig. 8 is network side equipment structure diagram of the embodiment of the present invention；
Fig. 9 is user device architecture schematic diagram of the embodiment of the present invention.
Embodiment
Inventive network side to carry out multiple UE of MU-MIMO communications in same asset by distributing different antenna ends
Mouthful, multiple user equipmenies are ensure that when carrying out MU-MIMO communications in same asset, the orthogonality of the DMRS of each user equipment,
So as to improve power system capacity and system flexibility.
The embodiment of the present invention is described in further detail with reference to Figure of description.
Shown in Figure 2, in the embodiment of the present invention, the method for sending demodulated reference signal specifically includes following steps：
Step 21, network side are according to antenna port and the mapping table of the transmission number of plies, to carry out MU- in same asset
At least two UE of MIMO communications select the correspondence with the transmission number of plies identical with each UE respectively, and by each right of selection
Antenna port in should being related to is respectively allocated to corresponding UE, wherein, different UE distributes different antenna ports；
Step 22, network side notify call number of the selected correspondence in mapping table to corresponding UE,
And DMRS is sent by the antenna port in selected correspondence.
User equipment in the embodiment of the present invention can use single layer transmission（It is 1 to transmit the number of plies）User equipment,
Can use multilayer transmission（Transmit the number of plies and be more than 1）User equipment, since network side can be to carry out in same asset
The UE of MU-MIMO communications distributes different antenna ports, so as to ensure that the user of at least two single layer transmissions or multilayer transmission
Orthogonality between the DMRS of equipment.
Further, the number of the antenna port included in the mapping table of the embodiment of the present invention is determined in same asset
The sum of transmission number of plies of all UE of upper progress MU-MIMO communications, i.e., carry out the biography of the UE of MU-MIMO communications in same asset
The sum of defeated number of plies is not more than the number of the antenna port included in the mapping table, and the antenna included in the mapping table
The number of port is not more than 3rd Generation Partnership Project（3rd Generation Partnership
Project, 3GPP）The number of the antenna port for being used for transmission DMRS of protocol definition, wherein, used at present as defined in 3GPP agreements
8 are shared in the antenna port of transmission DMRS, is respectively 7 ~ port of port 14, certainly, the mapping table of the embodiment of the present invention
In the antenna port that includes be not limited to regulation in existing 3GPP agreements, be also covered by later 3GPP agreements may as defined in it is new
It is used for transmission the antenna port of DMRS.
For example, if network side is configured with M antenna port, wherein, M is positive integer, and is determined no more than 3GPP agreements
The number of the antenna port for being used for transmission DMRS of justice, then：
For the transmission number of plies is 1 UE, network side can arbitrarily select a different day from M antenna port
Line end mouth distributes to different UE, so as to maximum can support the complete orthogonal of the DMRS sequences of M UE at the same time；
For the transmission number of plies is the UE of K, network side can arbitrarily select K antenna port from M antenna port
The UE is distributed to, but in the embodiment of the present invention, the sum of transmission number of plies of UE of MU-MIMO communications is carried out in same asset cannot
More than the number M of the antenna port of network side configuration, since network side can be enterprising in same asset in the embodiment of the present invention
Each UE of row MU-MIMO communications distributes different antenna ports, so as to ensure that the DMRS sequences of the UE of the different transmission numbers of plies
It is complete orthogonal.
It should be noted that in the embodiment of the present invention, if carrying out the transport layer of the UE of MU-MIMO communications in same asset
Number is 1, then the quantity of the UE of MU-MIMO communications is carried out in same asset and cannot be used to pass more than defined in 3GPP agreements
The number of the antenna port of defeated DMRS；If the transmission number of plies part that the UE of MU-MIMO communications is carried out in same asset it is different or
All different, then the sum of transmission number of plies of UE of MU-MIMO communications is carried out in same asset cannot be fixed more than in 3GPP agreements
The number of the antenna port for being used for transmission DMRS of justice, so that network side can be that MU-MIMO communications are carried out in same asset
Each UE distribute different antenna port, and ensure the complete orthogonal of the DMRS sequences of each UE.
Further, the antenna port in each correspondence in the mapping table of the embodiment of the present invention is：From
3GPP protocol definitions are used for transmission arbitrarily chosen in the antenna port of DMRS and quantity and the transport layer in the correspondence
The identical antenna port of number.
For example, the correspondence that multiple transmission numbers of plies are 1 can be configured in the mapping table of the embodiment of the present invention, and
Antenna port in each correspondence is different, specifically, according to network demand, from being used for transmission for 3GPP protocol definitions
The antenna port of DMRS（7 ~ port of port 14）In any choose the correspondence that an antenna port configuration is 1 in the transmission number of plies
In；
And for example, multiple transmission numbers of plies can be included in the mapping table for 2 correspondence, in each correspondence
The number of antenna port is 2, wherein, the antenna port included in each correspondence can be different, can also part it is identical；
Specifically, according to network demand, from the antenna port for being used for transmission DMRS of 3GPP protocol definitions（7 ~ port of port 14）In appoint
Meaning chooses two antenna port configurations in the transmission number of plies is 2 correspondence；In order to ensure multiple numbers of plies of transmitting for 2 user
Orthogonality between the DMRS of equipment, it is preferred that the antenna port included in each correspondence differs；Other transport layers
Several correspondences is similar, no longer illustrates one by one herein.
In order to ensure the orthogonality between the DMRS of the user equipment of multiple and different transmission numbers of plies, it is preferred that configured
The identical transmission number of plies corresponds to different antenna ports in mapping table, i.e.,：There is the identical traffic number of plies in mapping table
Each correspondence in antenna port differ.
It should be noted that since the maximum codeword number that current LTE system is supported is 2, in configuration correspondence
During table, single codeword transmission and double codeword transmissions are configured respectively；Transmitted for single codeword, the transmission number of plies supported at present is
1 ~ 4, and more codeword transmissions, the transmission number of plies supported at present are 2 ~ 8.
Further, the concrete configuration mode of the mapping table of the embodiment of the present invention includes following four：
Only include the various combination of the transmission number of plies and antenna port in mode one, mapping table, wherein, each is different
Combination represent a different correspondence；
Specifically, the transmission number of plies in each different correspondence is different and/or antenna port is different；It is for example, different
The transmission number of plies and identical antenna port represent different correspondence；And for example, the different transmission numbers of plies and different antennas
Port represents different correspondences；For another example, the identical transmission number of plies and different antenna ports represent different correspondences.
Mode two, correspondence include transmitting the number of plies, antenna port and DMRS scrambler initial markings（That is nSCID）No
With combination, wherein, each different combination represents a different correspondence；
As long as specifically, in the transmission number of plies included in mapping table, antenna port and DMRS scrambler initialisation identifications
There is a parameter difference, all represent different correspondences；For example, the identical traffic number of plies, identical antenna port and different
DMRS scramblers initialisation identifications represent different correspondences；And for example, the identical transmission number of plies, different antenna port and identical
DMRS scrambler initialisation identifications also illustrate that different correspondences；For another example, the different transmission numbers of plies, different antenna ports and
Identical DMRS scrambler initialisation identifications also illustrate that different correspondences；Etc..
Mode three, mapping table include transmitting the resource particle that the number of plies, antenna port and DMRS take（Resource
Element, RE）The various combination of number, wherein, each different combination represents a different correspondence；
Specifically, in the resource particle number that the transmission number of plies included in mapping table, antenna port and DMRS take
As long as there is a parameter difference, different correspondences is all represented.
It should be noted that the resource particle number that DMRS specified in existing 3GPP agreements takes is 12 or 24.
Certainly, the mapping table of the embodiment of the present invention is not limited to the resource grains subnumber that DMRS specified in existing 3GPP agreements takes
Mesh, be also covered by later 3GPP agreements may as defined in the resource particle number that takes of new DMRS, such as 36,48.
Mode four, mapping table include transmitting the number of plies, antenna port, DMRS scramblers initialisation identifications and DMRS occupancy
Resource particle number various combination, wherein, each different combination represents a different correspondence；
Specifically, the transmission number of plies included in mapping table, antenna port, DMRS scramblers initialisation identifications and DMRS are accounted for
As long as there is a parameter difference in resource particle number, a different correspondence is all represented.
Further, for mapping table, the correspondence of the embodiment of the present invention specified in compatible existing 3GPP agreements
The part or all of correspondence in mapping table specified in existing 3GPP agreements can also be included in table, i.e. the present invention is real
Apply and not only include above-mentioned newly-increased correspondence in the mapping table of example, it is right specified in existing 3GPP agreements also to include
Answer the part or all of correspondence in relation table.
It should be noted that the mapping table of the embodiment of the present invention can be provided by agreement, and it is stored respectively in advance
In network side equipment and user equipment；It can also consult to configure by network side equipment and user equipment both sides, and will configure
Mapping table is stored respectively in network side equipment and user equipment；It can also be configured, and be notified to use by network side equipment
Family equipment is to store.
Further, in step 22, network side by call number of the selected correspondence in mapping table notify to
Corresponding UE, further comprises：
Network side passes through descending control signaling（Downlink Control Information, DCI）Send call number.
Specifically, network side uses the N of descending control signaling（N is positive integer）Bit data represents different call numbers,
As included 16 kinds of different correspondences in mapping table, then network side can use 4 bit datas of descending control signaling
Represent the call number of different correspondences respectively, as bit data for 0000 represent the first correspondence, bit data 0001
Represent second of correspondence, and so on.
Shown in Figure 3 based on above-described embodiment, in the embodiment of the present invention, the method for receiving demodulated reference signal is specific
Comprise the following steps：
Step 31, user equipment are after the call number of network side transmission is received, according to antenna port and the transmission number of plies
Mapping table, determines the corresponding correspondence of the call number, the antenna port distributed using obtaining network side as itself, wherein,
Network side distributes different antenna ports to carry out at least two user equipmenies of MU-MIMO communications in same asset；
Step 32, user equipment receive the DMRS of network side transmission in the antenna port that network side distributes.
Further, the number of the antenna port included in the mapping table of the embodiment of the present invention is determined in same asset
The sum of transmission number of plies of all UE of upper progress MU-MIMO communications, i.e., carry out the biography of the UE of MU-MIMO communications in same asset
The sum of defeated number of plies is not more than the number of the antenna port included in the mapping table, and the antenna included in the mapping table
The number of port no more than the antenna port for being used for transmission DMRS of 3GPP protocol definitions number, wherein, 3GPP agreements at present
The defined antenna port for being used for transmission DMRS shares 8, is respectively 7 ~ port of port 14, certainly, pair of the embodiment of the present invention
The regulation for answering the antenna port included in relation table to be not limited in existing 3GPP agreements, 3GPP agreements may advise after being also covered by
The fixed new antenna port for being used for transmission DMRS.
Further, the antenna port in each correspondence in the mapping table of the embodiment of the present invention is：From
3GPP protocol definitions are used for transmission arbitrarily chosen in the antenna port of DMRS and quantity and the transport layer in the correspondence
The identical antenna port of number.
In order to ensure the orthogonality between the DMRS of the user equipment of multiple and different transmission numbers of plies, it is preferred that the present invention is real
In the mapping table for applying example, the different antenna port of the correspondence of the identical transmission number of plies.
It should be noted that since the maximum codeword number that current LTE system is supported is 2, in configuration correspondence
During table, single codeword transmission and double codeword transmissions are configured respectively；Transmitted for single codeword, the transmission number of plies supported at present is
1 ~ 4, and more codeword transmissions, the transmission number of plies supported at present are 2 ~ 8.
Further, the concrete configuration mode of the mapping table of the embodiment of the present invention includes one ~ mode of aforesaid way four, this
Place repeats no more.
Based on above-described embodiment, the interaction of network side and user equipment side is described in detail below, referring to Fig. 4
It is shown, specifically include following steps：
Step 41, base station are according to antenna port and the mapping table of the transmission number of plies, to carry out MU- in same asset
Different antenna ports is respectively configured at least two UE of MIMO communications, and produces corresponding DMRS sequences；
Specifically, according to formula throughout one's life into corresponding DMRS sequences；
Formula one；
Wherein, nSCIDFor DMRS scrambler initialisation identifications, its value is 0 or 1, nsFor subframe time-gap number, X is base station
The parameter of configuration, base station can inform the value of the X of UE configurations by RRC signaling.
Index of the correspondence belonging to antenna port that step 42, base station will configure for each UE in mapping table
Number notified by descending control signaling to corresponding UE；
Specifically, base station represents to need the call number sent by the N-bit data in control signaling.
The descending control signaling that step 43, UE detections base station are sent, and decoding process is carried out, according to decoded N-bit
Data determine corresponding call number, and obtain the corresponding correspondence of the call number according to the call number, so as to get base station
For the resource particle number shared by the antenna end slogan and DMRS of its distribution；
Specifically, when DMRS takes 12 resource particles, the power ratio of DMRS and data-signal is 1；When DMRS takes
During 24 resource particles, the power ratio of DMRS and data-signal is 2, wherein, data-signal refers to service signal, i.e. PDSCH numbers
According to.
Step 44, UE are received in the antenna port distributed for it according to the correspondence got and are demodulated corresponding number
According to.
By 41 ~ step 44 of above-mentioned steps, can ensure to carry out multiple UE's of MU-MIMO communications in same asset
Orthogonality between DMRS.
Below by taking the mapping table shown in table 2 as an example, illustrate in conjunction with specific embodiments to the process for transmitting DMRS
Explanation.It should be noted that the correspondence shown in table 2 is merely exemplary, and infinite, the correspondence of the embodiment of the present invention
Relation table is not limited to following form, and the configuration of every mapping table for meeting the embodiments of the present invention is covered by this hair
In bright：
Table 2
For mapping table specified in compatible existing 3GPP agreements, the correspondence of single codeword call number 0 ~ 6 in table 2
For mapping table specified in existing 3GPP agreements（That is table 1）The correspondence of middle single codeword call number 0 ~ 6, and rope in table 2
The correspondence of quotation marks 7 ~ 15 is the new correspondence of configuration of the embodiment of the present invention；The correspondence of dicode word indexing number 0 ~ 7 in table 2
Relation is mapping table specified in existing 3GPP agreements（That is table 1）The correspondence of middle single codeword call number 0 ~ 7, and table 2
The correspondence of middle call number 8 ~ 15 is the new correspondence of configuration of the embodiment of the present invention.
Interaction between base station of the embodiment of the present invention and user equipment is as follows：
First, base station is indicated in mapping table according to network demand in descending control signaling using 4 bit datas
The call number of each correspondence；
Secondly, base station is according to antenna port and the mapping table of the transmission number of plies（That is table 2）, antenna end is configured for each UE
Mouthful；
For example, under the scene of single codeword single layer transmission, to realize the complete orthogonality between the DMRS of multiple UE, if
The quantity that the UE of MU-MIMO communications is carried out in same asset is 8, then in the correspondence that base station can represent call number 8 ~ 15
Antenna port is respectively configured to each UE, shown in Figure 5, wherein, 4 bit datas 1000 ~ 1111 represent respectively call number 8 ~
15。
Due in table 2, the antenna port in the correspondence that call number 8 ~ 15 represents is different, and therefore, base station is from index
Optionally A kinds correspondence distribution A carries out the UE of MU-MIMO communications in same asset in numbers 8 ~ 15 correspondences represented,
It is complete orthogonal between the DMRS of the A UE so as to realize, wherein, 1≤A≤8.
In another example for there are the UE of multilayer transmission, if UE1 and UE2 uses double codeword transmissions, and it transmits number of plies difference
For 3 and 2, UE3, UE4 and UE5 are transmitted using single codeword, then mapping table of the base station according to table 2, by rope in dicode word
The correspondence of quotation marks { 2,9 } is allocated to the UE1 and UE2 of transmission dicode word, and pair by call number in single codeword { 8,10,12 }
It should be related to and be allocated to UE3, UE4 and UE5, it is shown in Figure 6, so as to support MU-MIMO different user devices using different
The transmission number of plies, improve system flexibility.
Finally, UE is by checking that descending control signaling obtains the call number that 4 bit datas represent, by shown in inquiry table 2
Mapping table, to obtain base station as the resource particle number shared by the antenna end slogan and DMRS that it is distributed so that
Corresponding data are demodulated by corresponding antenna port.
Above method process flow can realize that the software program can be stored in storage medium with software program, when
When the software program of storage is called, above method step is performed.
Based on same inventive concept, a kind of communication system is additionally provided in the embodiment of the present invention, since the system solves to ask
The principle of topic is similar to the above-mentioned method for sending and receiving demodulated reference signal, therefore the implementation of the equipment may refer to method
Implement, overlaps will not be repeated.
Shown in Figure 7, in the embodiment of the present invention, communication system includes：
Network side equipment 71, for being enterprising in same asset according to antenna port and the mapping table of the transmission number of plies
At least two user equipmenies 72 of row MU-MIMO communications select one respectively has the transmission number of plies identical with each user equipment 72
Correspondence, and the antenna port in each correspondence of selection is respectively allocated to corresponding user equipment 72；And will
Call number of the selected correspondence in mapping table is notified to corresponding user equipment 72, and by selected right
Antenna port in should being related to sends demodulated reference signal DMRS；
User equipment 72, for after the call number of the transmission of network side equipment 71 is received, according to antenna port and transmitting
The mapping table of the number of plies, determines the corresponding correspondence of call number, to obtain the antenna that network side equipment 71 is itself distribution
Port；And receive the DMRS of network side transmission in antenna port；
Wherein, different user equipmenies 72 distributes different antenna ports.
Shown in Figure 8, in the embodiment of the present invention, network side equipment 71 includes：
Configuration module 711, for being to be carried out in same asset according to antenna port and the mapping table of the transmission number of plies
At least two user equipment (UE)s of MU-MIMO communications select a corresponding pass with the transmission number of plies identical with each UE respectively
System, and the antenna port in each correspondence of selection is respectively allocated to corresponding UE, wherein, configuration module 711 is in phase
Different antenna ports is distributed with multiple UE that MU-MIMO communications are carried out in resource；
Sending module 712, for notifying call number of the selected correspondence in mapping table to corresponding
UE, and demodulated reference signal DMRS is sent by the antenna port in selected correspondence.
Further, sending module 72 is specifically used for：Call number is sent by descending control signaling DCI.
Shown in Figure 9, in the embodiment of the present invention, user equipment 72 includes：
First receiving module 721, for after the call number of network side equipment transmission is received, according to antenna port and passing
The mapping table of the defeated number of plies, determines the corresponding correspondence of call number, the antenna distributed using obtaining network side equipment as itself
Port, wherein, network side equipment is different to carry out at least two user equipmenies distribution of MU-MIMO communications in same asset
Antenna port；
Second receiving module 722, for receiving the demodulated reference signal DMRS of network side equipment transmission in antenna port.
Further, the number of the antenna port included in the mapping table of the embodiment of the present invention is determined in same asset
The sum of transmission number of plies of all UE of upper progress MU-MIMO communications, i.e., carry out the biography of the UE of MU-MIMO communications in same asset
The sum of defeated number of plies is not more than the number of the antenna port included in the mapping table, and the antenna included in the mapping table
Number of the number of port no more than the antenna port for being used for transmission DMRS of 3GPP protocol definitions.
Further, the antenna port in each correspondence in mapping table is：3GPP protocol definitions are used for
Transmit antenna port arbitrarily chosen in the antenna port of DMRS and that quantity is identical with the transmission number of plies in the correspondence.
Further, the different antenna port of the correspondence of the transmission number of plies identical in mapping table.
Further, mapping table includes the various combination for transmitting the number of plies and antenna port, wherein, each is different
Combination represents a different correspondence；Or
Mapping table includes the various combination for transmitting the number of plies, antenna port and DMRS scrambler initialisation identifications, wherein,
Each different combination represents a different correspondence；Or
Mapping table includes the various combination for transmitting the resource particle number that the number of plies, antenna port and DMRS take,
Wherein, each different combination represents a different correspondence；Or
Mapping table includes transmitting the resource that the number of plies, antenna port, DMRS scramblers initialisation identifications and DMRS take
The various combination of number of particles, wherein, each different combination represents a different correspondence.
Further, antenna port in the mapping table of the transmission number of plies with also including antenna port specified in 3GPP agreements
The part or all of correspondence in mapping table with transmitting the number of plies.
The embodiment of the present invention is according to antenna port and the mapping table of the transmission number of plies, to carry out MU- in same asset
At least two UE of MIMO communications select a correspondence with the transmission number of plies identical with each UE respectively, and by selection
Antenna port in each correspondence is respectively allocated to corresponding UE, wherein, different UE distributes different antenna ports；And
Call number of the selected correspondence in the mapping table is notified to corresponding UE, and passes through selected corresponding pass
Antenna port in system sends DMRS to UE；Since network side is that at least two of MU-MIMO communications is carried out in same asset
UE distributes different antenna ports, so as to ensure that at least two user equipmenies that MU-MIMO communications are carried out in same asset
DMRS orthogonality, drastically increase power system capacity, and since the embodiment of the present invention can also support at least two not
User equipment with the transmission number of plies carries out MU-MIMO communications in same asset, so as to improve system flexibility.
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, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program production of upper implementation
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
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 the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
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 scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (16)
- A kind of 1. method for sending demodulated reference signal, it is characterised in that this method includes：Network side is that multi-user's multiple-input, multiple-output are carried out in same asset according to antenna port and the mapping table of the transmission number of plies At least two user equipment (UE)s of MU-MIMO communications select a corresponding pass with the transmission number of plies identical with each UE respectively System, and the antenna port in each correspondence of selection is respectively allocated to corresponding UE, wherein, different UE distribution is different Antenna port；The network side notifies call number of the selected correspondence in the mapping table to corresponding UE, and leads to The antenna port crossed in selected correspondence sends demodulated reference signal DMRS；Wherein, the mapping table includes the various combination for transmitting the number of plies and antenna port, wherein, each different group Close and represent a different correspondence；OrThe mapping table includes the various combination for transmitting the number of plies, antenna port and DMRS scrambler initialisation identifications, wherein, Each different combination represents a different correspondence；OrMapping table includes the various combination for transmitting the resource particle number that the number of plies, antenna port and DMRS take, wherein, Each different combination represents a different correspondence；OrMapping table includes transmitting the resource particle that the number of plies, antenna port, DMRS scramblers initialisation identifications and DMRS take The various combination of number, wherein, each different combination represents a different correspondence.
- 2. the method as described in claim 1, it is characterised in that carry out all UE's of MU-MIMO communications in same asset The sum of transmission number of plies is not more than the number of the antenna port included in the mapping table, and is included in the mapping table Antenna port number no more than 3GPP protocol definitions the antenna port for being used for transmission DMRS number；Wherein, the number of the antenna port for being used for transmission DMRS of the 3GPP protocol definitions is 8, is respectively port 7~end Mouth 14.
- 3. method as claimed in claim 2, it is characterised in that the day in each correspondence in the mapping table Line end mouth is：3GPP protocol definitions are used for transmission in arbitrarily chosen in the antenna port of DMRS and quantity and the correspondence The identical antenna port of the transmission number of plies.
- 4. method as claimed in claim 3, it is characterised in that the identical transmission number of plies corresponds to different in the mapping table Antenna port.
- 5. the method as described in claim 1, it is characterised in that the network side is by selected correspondence in the correspondence Call number in relation table notifies, to corresponding UE, to further comprise：The network side sends the call number by descending control signaling DCI.
- A kind of 6. method for receiving demodulated reference signal, it is characterised in that this method includes：User equipment receive network side transmission call number after, according to antenna port with transmission the number of plies mapping table, Determine the corresponding correspondence of the call number, the antenna port distributed using obtaining network side as itself, wherein, the network side Different antenna ports is distributed to carry out at least two UE of MU-MIMO communications in same asset；The user equipment receives the demodulated reference signal DMRS of the network side transmission in the antenna port；Wherein, the mapping table includes the various combination for transmitting the number of plies and antenna port, wherein, each different group Close and represent a different correspondence；OrThe mapping table includes the various combination for transmitting the number of plies, antenna port and DMRS scrambler initialisation identifications, wherein, Each different combination represents a different correspondence；OrMapping table includes the various combination for transmitting the resource particle number that the number of plies, antenna port and DMRS take, wherein, Each different combination represents a different correspondence；OrMapping table includes transmitting the resource particle that the number of plies, antenna port, DMRS scramblers initialisation identifications and DMRS take The various combination of number, wherein, each different combination represents a different correspondence.
- 7. method as claimed in claim 6, it is characterised in that the day in each correspondence in the mapping table Line end mouth is：3GPP protocol definitions are used for transmission the antenna port arbitrarily chosen in the antenna port of DMRS；Wherein, the number of the antenna port for being used for transmission DMRS of the 3GPP protocol definitions is 8, is respectively port 7~end Mouth 14.
- 8. method as claimed in claim 6, it is characterised in that the identical transmission number of plies corresponds to different in the mapping table Antenna port.
- 9. a kind of network side equipment, it is characterised in that the network side equipment includes：Configuration module, for being that MU-MIMO is carried out in same asset according to antenna port and the mapping table of the transmission number of plies At least two UE of communication select one respectively has a correspondence with each UE identical traffics number of plies, and by each correspondence of selection Antenna port in relation is respectively allocated to corresponding UE, wherein, different UE distributes different antenna ports；Sending module, for notifying call number of the selected correspondence in the mapping table to corresponding UE, And demodulated reference signal DMRS is sent by the antenna port in selected correspondence；Wherein, the mapping table that the configuration module is configured includes the various combination for transmitting the number of plies and antenna port, its In, each different combination represents a different correspondence；OrThe mapping table that the configuration module is configured includes transmitting the number of plies, antenna port and DMRS scrambler initialisation identifications Various combination, wherein, each different combination represents a different correspondence；OrThe mapping table that the configuration module is configured includes transmitting the resource particle that the number of plies, antenna port and DMRS take The various combination of number, wherein, each different combination represents a different correspondence；OrThe mapping table that the configuration module is configured includes transmitting the number of plies, antenna port, DMRS scrambler initialisation identifications And the various combination of the resource particle number of DMRS occupancy, wherein, each different combination represents a different correspondence Relation.
- 10. network side equipment as claimed in claim 9, it is characterised in that the mapping table that the configuration module is configured In each correspondence in antenna port be：Being used for transmission in the antenna port of DMRS for 3GPP protocol definitions is arbitrarily selected The take and quantity antenna port identical with the transmission number of plies in the correspondence；Wherein, the number of the antenna port for being used for transmission DMRS of the 3GPP protocol definitions is 8, is respectively port 7~end Mouth 14.
- 11. network side equipment as claimed in claim 9, it is characterised in that the mapping table that the configuration module is configured In the identical transmission number of plies correspond to different antenna ports.
- 12. network side equipment as claimed in claim 9, it is characterised in that the sending module is specifically used for：The call number is sent by descending control signaling DCI.
- 13. a kind of user equipment, it is characterised in that the user's equipment includes：First receiving module, for after the call number of network side equipment transmission is received, according to antenna port and transmitting the number of plies Mapping table, determine the corresponding correspondence of the call number, the antenna end distributed to obtain network side equipment as itself Mouthful, wherein, the network side equipment is different to carry out at least two user equipmenies distribution of MU-MIMO communications in same asset Antenna port；Second receiving module, for receiving the demodulated reference signal DMRS of the network side equipment transmission in the antenna port；Wherein, the mapping table includes the various combination for transmitting the number of plies and antenna port, wherein, each different group Close and represent a different correspondence；OrThe mapping table includes the various combination for transmitting the number of plies, antenna port and DMRS scrambler initialisation identifications, wherein, Each different combination represents a different correspondence；OrThe mapping table includes the various combination for transmitting the resource particle number that the number of plies, antenna port and DMRS take, Wherein, each different combination represents a different correspondence；OrThe mapping table includes transmitting the resource that the number of plies, antenna port, DMRS scramblers initialisation identifications and DMRS take The various combination of number of particles, wherein, each different combination represents a different correspondence.
- 14. user equipment as claimed in claim 13, it is characterised in that each correspondence in the mapping table In antenna port be：3GPP protocol definitions to be used for transmission arbitrarily chosen in the antenna port of DMRS and quantity corresponding with this The identical antenna port of the transmission number of plies in relation；Wherein, the number of the antenna port for being used for transmission DMRS of the 3GPP protocol definitions is 8, is respectively port 7~end Mouth 14.
- 15. user equipment as claimed in claim 13, it is characterised in that the identical transmission number of plies pair in the mapping table Answer different antenna ports.
- 16. a kind of communication system, it is characterised in that the communication system includes：Network side equipment, for being that MU- is carried out in same asset according to antenna port and the mapping table of the transmission number of plies At least two user equipmenies of MIMO communications select a corresponding pass with the transmission number of plies identical with each user equipment respectively System, and the antenna port in each correspondence of selection is respectively allocated to corresponding user equipment；And will be selected right It should be related to that the call number in the mapping table is notified to corresponding user equipment, and by selected correspondence Antenna port send demodulated reference signal DMRS；User equipment, for receive network side equipment transmission call number after, according to antenna port with transmission the number of plies pair Relation table is answered, determines the corresponding correspondence of the call number, the antenna port distributed using obtaining network side equipment as itself；With And receive the DMRS of the network side transmission in the antenna port；Wherein, different user equipmenies distributes different antenna ports；Wherein, the mapping table includes the various combination for transmitting the number of plies and antenna port, wherein, each different group Close and represent a different correspondence；OrThe mapping table includes the various combination for transmitting the number of plies, antenna port and DMRS scrambler initialisation identifications, wherein, Each different combination represents a different correspondence；OrThe mapping table includes the various combination for transmitting the resource particle number that the number of plies, antenna port and DMRS take, Wherein, each different combination represents a different correspondence；OrThe mapping table includes transmitting the resource that the number of plies, antenna port, DMRS scramblers initialisation identifications and DMRS take The various combination of number of particles, wherein, each different combination represents a different correspondence.
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| CN201210478735.6A CN103841644B (en) | 2012-11-22 | 2012-11-22 | A kind of method, equipment and system for transmitting demodulated reference signal |
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| CN105790814B (en) * | 2014-12-18 | 2018-12-25 | 中国电信股份有限公司 | MIMO downlink demodulation reference signal and signal transmission method and device |
| CN106160970A (en) * | 2015-04-03 | 2016-11-23 | 北京信威通信技术股份有限公司 | The sending method of downlink demodulation reference signal in multi-user MIMO system |
| CN106455066B (en) | 2015-08-10 | 2020-05-08 | 上海诺基亚贝尔股份有限公司 | Method and device for configuring downlink control information |
| CN106470495B (en) * | 2015-08-14 | 2019-07-05 | 电信科学技术研究院 | A kind of dispatching method and device |
| CN106559363B (en) * | 2015-09-25 | 2020-06-05 | 电信科学技术研究院 | Demodulation reference signal transmission method, channel estimation method and device |
| CN106685580B (en) | 2015-11-06 | 2020-03-03 | 中兴通讯股份有限公司 | Data processing method and device |
| CN106921479B (en) * | 2015-12-28 | 2022-09-23 | 华为技术有限公司 | Channel estimation method, sending end equipment and receiving end equipment |
| CN105634707B (en) * | 2015-12-31 | 2019-04-23 | 深圳市金立通信设备有限公司 | A kind of method, base station and the terminal of information transmission |
| CN106973437B (en) * | 2016-01-13 | 2021-10-01 | 华为技术有限公司 | Reference signal configuration method and equipment |
| CN107733483B (en) * | 2016-08-12 | 2020-12-08 | 电信科学技术研究院 | Method for determining number of antenna ports and related device |
| CN107800660A (en) * | 2016-09-05 | 2018-03-13 | 北京信威通信技术股份有限公司 | The mapping method and device of a kind of demodulated reference signal |
| CN108282322A (en) * | 2017-01-06 | 2018-07-13 | 华为技术有限公司 | A kind of method and apparatus of configuration reference signal |
| KR20190112772A (en) * | 2017-02-07 | 2019-10-07 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Wireless communication method, terminal device and network device |
| CN108631998B (en) * | 2017-03-24 | 2020-07-28 | 华为技术有限公司 | Reference signal mapping method, network equipment and terminal equipment |
| CN112968756B (en) * | 2018-09-14 | 2022-06-28 | 华为技术有限公司 | Reference signal configuration method and device |
| CN111193581B (en) * | 2018-11-14 | 2021-12-03 | 华为技术有限公司 | Method for transmitting and receiving physical downlink control channel and communication device |
| CN111818628B (en) * | 2019-04-10 | 2022-04-29 | 大唐移动通信设备有限公司 | Data transmission method and device |
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