CN102332945B - A kind of information feedback method and user equipment - Google Patents
A kind of information feedback method and user equipment Download PDFInfo
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- CN102332945B CN102332945B CN201110293173.3A CN201110293173A CN102332945B CN 102332945 B CN102332945 B CN 102332945B CN 201110293173 A CN201110293173 A CN 201110293173A CN 102332945 B CN102332945 B CN 102332945B
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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
- H04B7/0417—Feedback systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03891—Spatial equalizers
- H04L25/03949—Spatial equalizers equalizer selection or adaptation based on feedback
- H04L25/03955—Spatial equalizers equalizer selection or adaptation based on feedback in combination with downlink estimations, e.g. downlink path losses
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a kind of information feedback method and user equipment, overcome in the prior art base station can't determine how as the defect of UE configurating downlink precoding transmissions, this method includes：User equipment includes the one or more in following information to base station feedback information, the information：Measuring reference signals（SRS）Transmit antenna port to the physical antenna of the mapping relations, the mapping relations of the physical antenna of downlink reception antenna port to the user equipment, the user equipment of the physical antenna of the user equipment to the mapping relations and the user equipment of downlink reception antenna port to the base station advise progress downlink precoding transmission configuration mode.Embodiments of the invention overcome base station in the prior art and can't determined how as the defect of UE configurating downlink precoding transmissions, solve prior art because UE dual-mode antennas are configured local channel reciprocity sex chromosome mosaicism that is asymmetric and occurring.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of information feedback method and a kind of user equipment.
Background technology
In third generation partner program（The 3rd Generation Partnership Project, referred to as
3GPP）Long Term Evolution（Long Term Evolution, referred to as LTE）In system, upward signal includes the shared letter of physical uplink
Road（Physical Uplink Shared Channel, referred to as PUSCH）And its demodulated reference signal（Demodulation
Reference Signal for PUSCH）, Physical Uplink Control Channel（Physical Uplink Control Channel,
Referred to as PUCCH）And its demodulated reference signal（Demodulation Reference Signal for PUCCH）, measurement ginseng
Examine signal（Sounding Reference Signal, referred to as SRS）Deng.
SRS is to be used for measuring radio channel information between a kind of terminal device and base station（Channel State
Information, referred to as CSI）Signal.In long evolving system, user equipment（User Equipment, referred to as
UE）According to base station（E-Node-B, referred to as eNB）The bandwidth of instruction, frequency domain position, sequence cyclic shift, cycle and subframe are inclined
The parameter such as put, regularly send uplink SRS on last data symbol for sending subframe.ENB is obtained according to the SRS received
CSI up UE, and the operation such as frequency domain selection scheduling, close-loop power control is carried out according to obtained CSI.In addition, one
A little systems particularly TDD（Time division multiplexing）In system, eNB can also be obtained down according to the SRS received using channel reciprocity
Capable CSI, so as to carry out the pre-encode operation of downlink transfer.
In LTE system, upward signal is launched using single antenna port.But, user equipment can support 1 antenna port
（Antenna Port）, referred to as antenna port 0（port 0）；Also 2 antenna ports can be supported, antenna port 0 is referred to as
（port 0）With antenna port 1（port 1）.Support that the user equipment of multi-antenna port can be using the choosing of user equipment transmitting antenna
Select（UE transmit antenna selection）Choice of technology antenna port launches upward signal.User equipment launches day
The selection of line is configured by high level.
Work as closed loop（closed-loop）User equipment emitting antenna selecting is enabled by high level configuration, and user equipment is supported
During emitting antenna selecting, user equipment is according to the descending control information format 0 being most recently received（Downlink Control
Information format 0, referred to as DCI format 0）The emitting antenna selecting configuration information selection antenna of middle carrying
Port, launches other upward signals in addition to measuring reference signals SRS.
Descending control information format is illustrated below.
In LTE system, base station passes through Physical Downlink Control Channel（Physical Downlink Control
Channel, referred to as PDCCH）By Downlink Control Information（Downlink Control Information, referred to as DCI）Hair
User equipment is given, including lower/upper row schedule information（downlink or uplink scheduling
information）, uplink transmission power control command etc..
To different Downlink Control Information, LTE system defines a variety of descending control information formats（DCI format）.Its
In, Physical Uplink Shared Channel PUSCH uplink scheduling information is carried on descending control information format 0（DCI format
0）PDCCH in；Physical Downlink Shared Channel（Physical Downlink Shared Channel, referred to as PDSCH）'s
Down dispatch information is carried on descending control information format 1A/1B/1C/1D/1/2A/2（DCI format 1A/1B/1C/
1D/1/2A/2）PDCCH in.
Work as open loop（open-loop）User equipment emitting antenna selecting is enabled by high level configuration, and user equipment supports hair
When penetrating day line options, how user equipment selects antenna port to launch other upward signals in addition to measuring reference signals, makees
For user equipment problem of implementation also ununified solution.
When user equipment emitting antenna selecting supports emitting antenna selecting by high level configuration enable, and user equipment, use
Family equipment is according to certain rule selection antenna port, emission measurement reference signal.
At present, in the Standard Edition that 3GPP is formulated, the version of LTE standard is the 8th edition（Release 8, is abbreviated as Rel-
8）With the 9th edition（Release 9, is abbreviated as Rel-9）.Senior long term evolution（LTE-Advanced, referred to as LTE-A）System is
The evolution system of future generation of LTE system, the version of LTE-A standards is the 10th edition（Release 10, is abbreviated as Rel-10）, may
Also include later release, such as Rel-11 etc..
In current Rel-10 versions, under downlink spatial multiplexing transmission pattern, UE can be configured to pre-coding matrix by base station
Indicate（Pre-coding Matrix Indicator, PMI）Feed back or carry out downlink precoding biography without the mode that PMI feeds back
It is defeated.
When UE is configured without PMI feedbacks, UE is it shall be assumed that without Physical Resource Block binding（PRB bundling）；And work as UE
When being configured to PMI feedbacks, UE is it shall be assumed that use PRB bundling.In the case that UE feeds back without PMI, it is assumed that base station can profit
Complete down channel is obtained with channel reciprocity（The number of transmission antennas at UE ends is equal to reception antenna quantity）, then it is descending to pass
It can think that each PRB uses optimal pre-coding matrix when defeated, it is complete so as to obtain the pre-coding gain of frequency domain selectivity
The full performance loss made up enough by being brought without progress PRB bindings.
In lte-a system, the upward signal such as PUSCH, PUCCH, SRS be able to can also be used using the transmitting of single antenna port
Multi-antenna port is launched；User equipment can support 1 antenna port（port 0）, 2 antenna ports（port 0/1）, or 4
Antenna port（port 0/1/2/3）Launch upward signal.And for downlink transfer, user equipment then can with 1,2,4
Individual, 6 or 8 antenna ports receive the data of downlink transfer.When base station needs to carry out downlink transfer using channel reciprocity,
The problem of local channel reciprocity occurs in way according to current standard.
Local channel reciprocity sex chromosome mosaicism refers to that UE dual-mode antenna configures asymmetric situation, and such as UE is up to use 1
Root transmitting antenna, and using 4 reception antennas during downlink reception, when base station need by measure SRS using channel reciprocity come
When carrying out downlink transfer, 1 transmitting antenna has been used due to up, therefore base station can only obtain the channel reciprocity of part,
Order can only be used（Rank）For 1 downlink spatial multiplexing transmission, now base station can not judge when can using order as 2 or
Higher order carrys out downlink transfer and uses which kind of pre-coding matrix.
In addition, when upstream multi-antenna sends SRS, which 2 antenna in 4 antennas of selection send SRS and also influenced whether
The performance of downlink transfer.
For optimal downlink transfer performance, according to current Rel-10 agreements, base station can not determine when to configure UE
Downlink precoding transmission is carried out into the pattern of PMI feedbacks, and when carries out downlink precoding biography using channel reciprocity
It is defeated.
The content of the invention
The technical problems to be solved by the invention be overcome in the prior art base station can't determine how for UE configuration under
The defect of row precoding transmissions.
Present invention firstly provides a kind of information feedback method, including：User equipment is to base station feedback information, the packet
Include the one or more in following information：Measuring reference signals（SRS）Transmit antenna port to the user equipment physics day
The mapping relations of line, the mapping relations of the physical antenna of downlink reception antenna port to the user equipment, the thing of the user equipment
The carry out downlink precoding that the mapping relations and the user equipment of reason antenna to downlink reception antenna port are advised to the base station
The configuration mode of transmission.
Preferably, the transmit antenna port that the user equipment includes the SRS to the information of the base station feedback is set to the user
During the mapping relations of standby physical antenna, the antenna sum that the user equipment is supported is 4, up while sending SRS port
Quantity is 2, then the transmit antenna port of the SRS includes to the mapping relations of the physical antenna of the user equipment：
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 0 of the user equipment, antenna 1；
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 2 of the user equipment, antenna 3；
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 0 of the user equipment, antenna 2；Or
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 1 of the user equipment, antenna 3.
Preferably, the transmit antenna port that the user equipment includes the SRS to the information of the base station feedback is set to the user
During the mapping relations of standby physical antenna, the antenna sum that the user equipment is supported is 8, up while sending SRS port
Quantity is 4, then the transmit antenna port of the SRS should include to the mapping relations of the physical antenna of user equipment：
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to the physical antenna of the user equipment
0th, antenna 1, antenna 2, antenna 3；
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to the physical antenna of the user equipment
4th, antenna 5, antenna 6, antenna 7；
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to the physical antenna of the user equipment
0th, antenna 4, antenna 1, antenna 5；Or
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to the physical antenna of the user equipment
2nd, antenna 6, antenna 3, antenna 7.
Preferably, the user equipment includes the downlink reception antenna port to user equipment to the information of the base station feedback
During the mapping relations of physical antenna, the antenna sum that the user equipment is supported is 4, and the downlink reception antenna port quantity is 4,
Then the mapping relations of downlink reception antenna port to the physical antenna of the user equipment include：
The downlink reception antenna port 0, port 1, port 2, port 3 be respectively mapped to the user equipment physical antenna 0,
Antenna 1, antenna 2, antenna 3；Or
The downlink reception antenna port 0, port 1, port 2, port 3 be respectively mapped to the user equipment physical antenna 0,
Antenna 2, antenna 1, antenna 3.
Preferably, the user equipment includes the downlink reception antenna port to user equipment to the information of the base station feedback
During the mapping relations of physical antenna, the antenna sum that the user equipment is supported is 8, and the downlink reception antenna port quantity is 8,
Then the mapping relations of downlink reception antenna port to the physical antenna of the user equipment include：
The downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7 map respectively
To the physical antenna 0 of the user equipment, antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6, antenna 7；Or
The downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7 map respectively
To the physical antenna 0 of the user equipment, antenna 4, antenna 1, antenna 5, antenna 2, antenna 6, antenna 3, antenna 7.
Preferably, the user equipment is to the physical antenna of the information including the user equipment of the base station feedback to downlink reception
During the mapping relations of antenna port, the antenna sum that the user equipment is supported is 4, and the downlink reception antenna port quantity is 4,
Then the mapping relations of the physical antenna of the user equipment to downlink reception antenna port include：
Physical antenna 0, antenna 1, antenna 2, the antenna 3 of the user equipment be respectively mapped to the downlink reception antenna port 0,
Port 1, port 2, port 3；Or
Physical antenna 0, antenna 2, antenna 1, the antenna 3 of the user equipment be respectively mapped to the downlink reception antenna port 0,
Port 1, port 2, port 3.
Preferably, the user equipment is to the physical antenna of the information including the user equipment of the base station feedback to downlink reception
During the mapping relations of antenna port, the antenna sum that the user equipment is supported is 8, and the downlink reception antenna port quantity is 8,
Then the mapping relations of the physical antenna of the user equipment to the downlink reception antenna port include：
Physical antenna 0, antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6, the antenna 7 of the user equipment reflect respectively
It is mapped to the downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7；Or
Physical antenna 0, antenna 4, antenna 1, antenna 5, antenna 2, antenna 6, antenna 3, the antenna 7 of the user equipment reflect respectively
It is mapped to the downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7.
Preferably, the user equipment includes under the progress that the user equipment is advised to the base station to the information of the base station feedback
During the configuration mode of row precoding transmissions, the configuration mode includes：
The pattern of PMI feedbacks；Or
Use the pattern of channel reciprocity.
Preferably, the user equipment by physical layer signaling or high-level signaling to the base station feedback information.
Present invention also offers a kind of user equipment, for according to method as described before to the base station feedback information.
Compared with prior art, embodiments of the invention overcome base station in the prior art and can't determined how and match somebody with somebody for UE
The defect of downlink precoding transmission is put, the local channel that prior art occurs because the configuration of UE dual-mode antennas is asymmetric is solved
Reciprocity sex chromosome mosaicism.Embodiments of the invention improve downlink transfer performance.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 be in the embodiment of the present invention SRS transmit antenna ports to user equipment physical antenna mapping graph 1.
Fig. 2 be in the embodiment of the present invention SRS transmit antenna ports to user equipment physical antenna mapping graph 2.
Fig. 3 be in the embodiment of the present invention downlink reception antenna port to user equipment physical antenna mapping graph 1.
Fig. 4 be in the embodiment of the present invention downlink reception antenna port to user equipment physical antenna mapping graph 2.
Fig. 5 be in the embodiment of the present invention user equipment physical antenna to downlink reception antenna terminal mapping Fig. 1.
Fig. 6 be in the embodiment of the present invention user equipment physical antenna to downlink reception antenna terminal mapping Fig. 2.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
Information feedback method under the tdd systems of the embodiment of the present invention, including：User equipment is believed to base station feedback
Breath, the information includes the one or more in following information（Unless otherwise specified, in this patent it is " a variety of " expression two kinds or
It is two or more）：SRS transmit antenna port is arrived to the mapping relations of the physical antenna of user equipment, downlink reception antenna port
The mapping relations of the physical antenna of user equipment, the mapping relations of user equipment physical antenna to downlink reception antenna port and
The configuration mode for the progress downlink precoding transmission that the user equipment is advised to the base station.One kind in transmission above- mentioned information is still
Various feedback is to the difference of base station, feeds back a variety of more slightly bigger than feeding back a kind of used transport overhead.
The embodiment provides the information feedback method under a kind of tdd systems, including：User equipment to
Base station feedback information, wherein, institute's feedack includes：SRS transmit antenna port is reflected to the physical antenna of user equipment
Penetrate relation.
In the present embodiment, user equipment is by physical layer signaling or high-level signaling to base station feedback described information.
By taking Fig. 1 as an example, antenna that user equipment is supported sum is 4, up while the port number for sending SRS is 2,
SRS transmit antenna port is to the mapping relations of the physical antenna of user equipment：1 point of SRS transmit antenna port 0, port
Physical antenna 0, the antenna 1 of user equipment are not mapped to.
In addition, in the present embodiment SRS transmit antenna port to the physical antenna of user equipment mapping relations also
Can be：
SRS transmit antenna port 0, port 1 are respectively mapped to the physical antenna 2 of user equipment, antenna 3；
SRS transmit antenna port 0, port 1 are respectively mapped to the physical antenna 0 of user equipment, antenna 2；Or
SRS transmit antenna port 0, port 1 are respectively mapped to the physical antenna 1 of user equipment, antenna 3.
By taking Fig. 2 as an example, antenna that user equipment is supported sum is 8, up while the port number for sending SRS is 4,
SRS transmit antenna port is to the mapping relations of the physical antenna of user equipment：SRS transmit antenna port 0, port 1, end
Mouth 2, port 3 are respectively mapped to physical antenna 0, antenna 1, antenna 2, the antenna 3 of user equipment.
In addition, in the present embodiment SRS transmit antenna port to the physical antenna of user equipment mapping relations also
Can be：
SRS transmit antenna port 0, port 1, port 2, port 3 are respectively mapped to physical antenna 4, the day of user equipment
Line 5, antenna 6, antenna 7；
SRS transmit antenna port 0, port 1, port 2, port 3 are respectively mapped to physical antenna 0, the day of user equipment
Line 4, antenna 1, antenna 5；Or
SRS transmit antenna port 0, port 1, port 2, port 3 are respectively mapped to physical antenna 2, the day of user equipment
Line 6, antenna 3, antenna 7.
Base station is received after user equipment feedack, so that it may determine it is that UE is configured into PMI according to the information received
The pattern of feedback, or downlink precoding transmission is carried out using channel reciprocity, so as to improve downlink transfer performance.
By taking Fig. 1 as an example, when SRS transmit antenna port to the physical antenna of user equipment mapping relations to be following two
For the moment, then UE is configured to the pattern of PMI feedbacks to mode by base station.It is when mapping relations are other modes, then mutual using channel
Easy property carries out downlink precoding transmission.
（1）SRS transmit antenna port 0, port 1 are respectively mapped to the physical antenna 0 of user equipment, antenna 1；
（2）SRS transmit antenna port 0, port 1 are respectively mapped to the physical antenna 2 of user equipment, antenna 3.
By taking Fig. 2 as an example, when SRS transmit antenna port to the physical antenna of user equipment mapping relations to be following two
For the moment, then UE is configured to the pattern of PMI feedbacks to mode by base station.It is when mapping relations are other modes, then mutual using channel
Easy property carries out downlink precoding transmission.
（1）SRS transmit antenna port 0, port 1, port 2, port 3 be respectively mapped to user equipment physical antenna 0,
Antenna 1, antenna 2, antenna 3；
（2）SRS transmit antenna port 0, port 1, port 2, port 3 be respectively mapped to user equipment physical antenna 4,
Antenna 5, antenna 6, antenna 7.
Embodiments of the invention additionally provide the information feedback method under a kind of tdd systems, including：User equipment
To base station feedback information, wherein, institute's feedack includes：Downlink reception antenna port reflects to the physical antenna of user equipment
Penetrate relation.
In the present embodiment, user equipment is by physical layer signaling or high-level signaling to base station feedback described information.
By taking Fig. 3 as an example, the antenna sum that user equipment is supported is 4, and downlink reception antenna port quantity is 4, descending to connect
Receive antenna port to the physical antenna of user equipment mapping relations be：Downlink reception antenna port 0, port 1, port 2, port
3 are respectively mapped to physical antenna 0, antenna 1, antenna 2, the antenna 3 of user equipment.
In addition, the mapping relations of downlink reception antenna port to the physical antenna of user equipment may be used also in the present embodiment
To be：
Downlink reception antenna port 0, port 1, port 2, port 3 are respectively mapped to physical antenna 0, the antenna of user equipment
2nd, antenna 1, antenna 3.
By taking Fig. 4 as an example, the antenna sum that user equipment is supported is 8, and downlink reception antenna port quantity is 8, descending to connect
Receive antenna port to the physical antenna of user equipment mapping relations be：Downlink reception antenna port 0, port 1, port 2, port
3rd, port 4, port 5, port 6, port 7 are respectively mapped to physical antenna 0, antenna 1, antenna 2, antenna 3, the antenna of user equipment
4th, antenna 5, antenna 6, antenna 7.
In addition, the mapping relations of downlink reception antenna port to the physical antenna of user equipment may be used also in the present embodiment
To be：
Downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7 are respectively mapped to
Physical antenna 0, antenna 4, antenna 1, antenna 5, antenna 2, antenna 6, antenna 3, the antenna 7 of user equipment.
Base station is received after user equipment feedack, so that it may determine it is that UE is configured into PMI according to the information received
The pattern of feedback, or downlink precoding transmission is carried out using channel reciprocity, so as to improve downlink transfer performance.
By taking Fig. 3 as an example, when descending reception antenna port to the mapping relations of the physical antenna of user equipment is：Downlink reception
Antenna port 0, port 1, port 2, port 3 are respectively mapped to physical antenna 0, antenna 1, antenna 2, the antenna 3 of user equipment, then
UE is configured to the pattern of PMI feedbacks by base station.When mapping relations are other modes, then carried out using channel reciprocity descending
Precoding transmissions.
By taking Fig. 4 as an example, when descending reception antenna port to the mapping relations of the physical antenna of user equipment is：Downlink reception
Antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7 are respectively mapped to the physics day of user equipment
Line 0, antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6, antenna 7, then base station by UE be configured to PMI feedback pattern.
When mapping relations are other modes, then downlink precoding transmission is carried out using channel reciprocity.
The embodiment provides the information feedback method under a kind of tdd systems, including：User equipment to
Base station feedback information, wherein, institute's feedack includes：The mapping of user equipment physical antenna to downlink reception antenna port is closed
System.
In the present embodiment, user equipment is by physical layer signaling or high-level signaling to base station feedback described information.
By taking Fig. 5 as an example, the antenna sum that user equipment is supported is 4, and downlink reception antenna port quantity is 4, Yong Hushe
The mapping relations of standby physical antenna to downlink reception antenna port are：Physical antenna 0, antenna 1, antenna 2, the day of user equipment
Line 3 is respectively mapped to downlink reception antenna port 0, port 1, port 2, port 3.
In addition, the mapping relations of the physical antenna of user equipment to downlink reception antenna port also include：
Physical antenna 0, antenna 2, antenna 1, the antenna 3 of user equipment are respectively mapped to downlink reception antenna port 0, port
1st, port 2, port 3.
By taking Fig. 6 as an example, the antenna sum that user equipment is supported is 8, and downlink reception antenna port quantity is 8, Yong Hushe
It is for the mapping relations of physical antenna to downlink reception antenna port：Physical antenna 0, antenna 1, antenna 2, the antenna of user equipment
3rd, antenna 4, antenna 5, antenna 6, antenna 7 be respectively mapped to downlink reception antenna port 0, port 1, port 2, port 3, port 4,
Port 5, port 6, port 7.
In addition, the mapping relations of user equipment physical antenna to downlink reception antenna port also include：
Physical antenna 0, antenna 4, antenna 1, antenna 5, antenna 2, antenna 6, antenna 3, the antenna 7 of user equipment map respectively
To downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7.
Base station is received after user equipment feedack, so that it may determine it is that UE is configured into PMI according to the information received
The pattern of feedback, or downlink precoding transmission is carried out using channel reciprocity, so as to improve downlink transfer performance.
By taking Fig. 5 as an example, when the mapping relations of physical antenna to the downlink reception antenna port of user equipment are：User equipment
Physical antenna 0, antenna 1, antenna 2, antenna 3 be respectively mapped to downlink reception antenna port 0, port 1, port 2, port 3, then
UE is configured to the pattern of PMI feedbacks by base station.When mapping relations are other modes, then carried out using channel reciprocity descending
Precoding transmissions.
By taking Fig. 6 as an example, when the mapping relations of user equipment physical antenna to downlink reception antenna port are：User equipment
Physical antenna 0, antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6, antenna 7 are respectively mapped to downlink reception antenna port
0th, port 1, port 2, port 3, port 4, port 5, port 6, port 7, then base station by UE be configured to PMI feedback pattern.When
When mapping relations are other modes, then downlink precoding transmission is carried out using channel reciprocity.
The embodiment provides the information feedback method under a kind of tdd systems, including：User equipment to
Base station feedback information, wherein, institute's feedack includes：Progress downlink precoding transmission that user equipment is advised to base station is matched somebody with somebody
Put pattern.
In the present embodiment, user equipment is by physical layer signaling or high-level signaling to base station feedback described information.
Wherein, the one or more in the configuration mode that user equipment is advised to base station, including following configuration mode：
The pattern of PMI feedbacks；
Use the pattern of channel reciprocity.
Base station is received after user equipment feedack, so that it may according to the information received（I.e. user equipment is built to base station
The configuration mode of view）, it is determined that being the pattern that UE is configured to PMI feedbacks, or descending prelist is carried out using channel reciprocity
Code transmission, so as to improve downlink transfer performance.
The embodiment provides a kind of user equipment to base station feedback aforementioned information.The content of the present embodiment please
Understood with reference to the foregoing each embodiment of the present invention, do not repeated herein.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein
The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of information feedback method, including：User equipment includes one kind in following information to base station feedback information, the information
Or it is a variety of：The transmit antenna port of measuring reference signals (SRS) to the physical antenna of the user equipment mapping relations, descending connect
Receive antenna port to the mapping relations of the physical antenna of the user equipment, the user equipment physical antenna to downlink reception antenna
The configuration mode for the progress downlink precoding transmission that the mapping relations of port and the user equipment are advised to the base station.
2. according to the method described in claim 1, wherein：
The user equipment includes the transmit antenna port of the SRS to the physical antenna of the user equipment to the information of the base station feedback
Mapping relations when, antenna that the user equipment is supported sum is 4, up while the port number for sending SRS is 2, then should
SRS transmit antenna port includes to the mapping relations of the physical antenna of the user equipment：
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 0 of the user equipment, antenna 1；
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 2 of the user equipment, antenna 3；
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 0 of the user equipment, antenna 2；Or
The transmit antenna port 0 of the SRS, port 1 are respectively mapped to the physical antenna 1 of the user equipment, antenna 3.
3. according to the method described in claim 1, wherein：
The user equipment includes the transmit antenna port of the SRS to the physical antenna of the user equipment to the information of the base station feedback
Mapping relations when, antenna that the user equipment is supported sum is 8, up while the port number for sending SRS is 4, then should
SRS transmit antenna port includes to the mapping relations of the physical antenna of the user equipment：
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to physical antenna 0, the day of the user equipment
Line 1, antenna 2, antenna 3；
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to physical antenna 4, the day of the user equipment
Line 5, antenna 6, antenna 7；
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to physical antenna 0, the day of the user equipment
Line 4, antenna 1, antenna 5；Or
The transmit antenna port 0 of the SRS, port 1, port 2, port 3 are respectively mapped to physical antenna 2, the day of the user equipment
Line 6, antenna 3, antenna 7.
4. according to the method described in claim 1, wherein：
The user equipment includes the downlink reception antenna port to the physical antenna of user equipment to the information of the base station feedback
During mapping relations, antenna that the user equipment is supported sum is 4, and the downlink reception antenna port quantity is 4, then this descending connects
Receiving the mapping relations of antenna port to the physical antenna of the user equipment includes：
The downlink reception antenna port 0, port 1, port 2, port 3 are respectively mapped to physical antenna 0, the antenna of the user equipment
1st, antenna 2, antenna 3；Or
The downlink reception antenna port 0, port 1, port 2, port 3 are respectively mapped to physical antenna 0, the antenna of the user equipment
2nd, antenna 1, antenna 3.
5. according to the method described in claim 1, wherein：
The user equipment includes the downlink reception antenna port to the physical antenna of user equipment to the information of the base station feedback
During mapping relations, antenna that the user equipment is supported sum is 8, and the downlink reception antenna port quantity is 8, then this descending connects
Receiving the mapping relations of antenna port to the physical antenna of the user equipment includes：
The downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7 are respectively mapped to this
Physical antenna 0, antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6, the antenna 7 of user equipment；Or
The downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7 are respectively mapped to this
Physical antenna 0, antenna 4, antenna 1, antenna 5, antenna 2, antenna 6, antenna 3, the antenna 7 of user equipment.
6. according to the method described in claim 1, wherein：
The user equipment is to the physical antenna of the information including the user equipment of the base station feedback to downlink reception antenna port
During mapping relations, the antenna sum that the user equipment is supported is 4, and the downlink reception antenna port quantity is 4, then the user sets
The mapping relations of standby physical antenna to downlink reception antenna port include：
Physical antenna 0, antenna 1, antenna 2, the antenna 3 of the user equipment are respectively mapped to downlink reception antenna port 0, the port
1st, port 2, port 3；Or
Physical antenna 0, antenna 2, antenna 1, the antenna 3 of the user equipment are respectively mapped to downlink reception antenna port 0, the port
1st, port 2, port 3.
7. according to the method described in claim 1, wherein：
The user equipment is to the physical antenna of the information including the user equipment of the base station feedback to downlink reception antenna port
During mapping relations, the antenna sum that the user equipment is supported is 8, and the downlink reception antenna port quantity is 8, then the user sets
The mapping relations of standby physical antenna to the downlink reception antenna port include：
Physical antenna 0, antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6, the antenna 7 of the user equipment are respectively mapped to
The downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7；Or
Physical antenna 0, antenna 4, antenna 1, antenna 5, antenna 2, antenna 6, antenna 3, the antenna 7 of the user equipment are respectively mapped to
The downlink reception antenna port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7.
8. according to the method described in claim 1, wherein：
The user equipment includes the carry out downlink precoding biography that the user equipment is advised to the base station to the information of the base station feedback
During defeated configuration mode, the configuration mode includes：
The pattern of PMI feedbacks；Or
Use the pattern of channel reciprocity.
9. the method according to any one of claim 1 to 8 claim, wherein：
The user equipment is by physical layer signaling or high-level signaling to the base station feedback information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110293173.3A CN102332945B (en) | 2011-09-30 | 2011-09-30 | A kind of information feedback method and user equipment |
| PCT/CN2011/084124 WO2012155507A1 (en) | 2011-09-30 | 2011-12-16 | Information feedback method and user equipment |
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| CN201110293173.3A CN102332945B (en) | 2011-09-30 | 2011-09-30 | A kind of information feedback method and user equipment |
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| CN105991264B (en) * | 2015-02-03 | 2019-11-26 | 中兴通讯股份有限公司 | A kind of sending method of measuring reference signals, equipment and system |
| CN107396388A (en) * | 2016-05-17 | 2017-11-24 | 中兴通讯股份有限公司 | The collocation method and device of cell reference signals port |
| KR102554710B1 (en) | 2016-09-23 | 2023-07-11 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Method for transmitting SRS, network device and terminal device |
| CN108023616B (en) | 2016-11-01 | 2020-01-03 | 上海朗帛通信技术有限公司 | Method and device for UE (user equipment) and base station of multi-antenna system |
| CN108023631B (en) | 2016-11-04 | 2023-08-22 | 华为技术有限公司 | Method and device for transmitting information |
| US10560169B2 (en) | 2017-03-24 | 2020-02-11 | Mediatek Inc. | CSI acquisition with channel reciprocity in mobile communications |
| CN109510651B (en) | 2017-09-15 | 2021-06-01 | 维沃移动通信有限公司 | Sending method and receiving method of SRS and related equipment |
| WO2019056322A1 (en) * | 2017-09-22 | 2019-03-28 | Oppo广东移动通信有限公司 | Method for indicating the number of transmission ports of ue, ue and network device |
| US10419099B2 (en) | 2017-11-17 | 2019-09-17 | Huawei Technologies Co., Ltd. | Phase tracking reference signal sending method and apparatus |
| CN114205064A (en) * | 2017-11-17 | 2022-03-18 | 华为技术有限公司 | Method and device for sending phase tracking reference signal |
| EP3800819B1 (en) | 2018-07-10 | 2023-11-22 | Huawei Technologies Co., Ltd. | Method and device for reporting channel state information |
| CN111464218B (en) * | 2019-01-18 | 2022-08-12 | ***通信有限公司研究院 | Method and device for managing downlink wave beams |
| WO2021258400A1 (en) * | 2020-06-27 | 2021-12-30 | Qualcomm Incorporated | Port to antenna mapping for uplink communications |
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| CN102332945A (en) | 2012-01-25 |
| WO2012155507A1 (en) | 2012-11-22 |
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