CN103746779A - Method and device for measuring CSI (Channel State Information) as well as reference signal sending method and device - Google Patents

Method and device for measuring CSI (Channel State Information) as well as reference signal sending method and device Download PDF

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CN103746779A
CN103746779A CN201310752712.4A CN201310752712A CN103746779A CN 103746779 A CN103746779 A CN 103746779A CN 201310752712 A CN201310752712 A CN 201310752712A CN 103746779 A CN103746779 A CN 103746779A
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reference signal
coding matrix
port
signal port
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CN103746779B (en
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刘建琴
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Huawei Technologies Co Ltd
Shanghai Huawei Technologies Co Ltd
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Shanghai Huawei Technologies Co Ltd
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Priority to CN201310752712.4A priority patent/CN103746779B/en
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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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

The invention provides a method and a device for measuring CSI (Channel State Information) as well as a reference signal sending method and a reference signal sending device. The method comprises the following steps: receiving reference signal allocation information sent by sending equipment and allocated reference signals of N reference signal ports; measuring CSI on the basis of the allocated reference signals of the N reference signal ports, wherein N is greater than or equal to 6, and the N reference signal ports consist of M groups of reference signal ports, wherein M is greater than or equal to 1. The step of measuring the CSI on the basis of the reference signals of the N reference signal ports comprises the following steps: measuring the CSI of the reference signals of each group of ports among the M groups of reference signal ports so as to obtain M first precoding matrixes, namely Wi, wherein i is equal to 1,2,...,M; obtaining a second precoding matrix W: W=W1*W2*...*WM according to the first precoding matrixes; obtaining a CQI (Channel Quality Indicator) according to the second precoding matrix. According to the scheme, measurement on the CSI is realized.

Description

A kind of channel condition information is measured, sending method and the device of reference signal
Technical field
The present invention relates to communication technical field, particularly sending method and the device of a kind of channel condition information measurement, reference signal.
Background technology
In wireless communication system, transmitting terminal and receiving terminal adopt the mode of spatial reuse to obtain higher speed with many antennas.With respect to general method for spacial multiplex, a kind of technology of enhancing is: receiving terminal feeding back channel state information is to transmitting terminal, and transmitting terminal is used some to the precoding technique transmitting according to the channel condition information obtaining, and improves greatly transmission performance.
Transmitting terminal sends predefined pilot signal, wherein, the port number of pilot signal equals the port number that data send, the predefine pilot signal that receiving terminal sends based on transmitting terminal, carry out channel condition information (Channel State Information, CSI) measurement, wherein, CSI comprises: precoding matrix indicators (Precoding Matrix Indicator, PMI), channel quality indication (Channel Quality Indicator, CQI), with order indication (Rank Indicator, RI), and pre-coding matrix type indication (Precoding Type Indicator, PTI) etc.
For the covering that obtains Geng Gao community average spectral efficiency (ase) and improve cell edge, advanced long-term evolution system (LTE-A, Long Term Evolution Advanced) on the basis of existing LTE system, maximum 8 antennas of descending support, and having proposed the technology that some feedbacks strengthen aspect code book feedback, be mainly the feedback accuracy that strengthens code book.For the subband or the multiple associating subband that need feeding back channel state information, subscriber equipment (UE), to two PMI of base station feedback, is respectively PMI1 and PMI2, wherein, code word W 1 in the corresponding code book C1 of PMI1, the code word W 2 in corresponding another code book C2 of PMI2.
Base station end has the information of C1 and the C2 identical with subscriber equipment end, receives after PMI1 and PMI2, from corresponding code book C1 and C2, finds corresponding code word W 1 and W2, obtains a code book that virtual code word W is corresponding.When concrete realization, the sub-codebook of the corresponding different Rank of definable following (herein only giving an example as an example of Rank1 and Rank2 example):
Table 1.Rank1 code book
Figure BDA0000450851360000021
Table 2.Rank2 code book
Figure BDA0000450851360000031
Figure BDA0000450851360000032
v m=[1?e j2πm/32?e j4πm/32?e j6πm/32] T
Above-mentioned two codebook structures are during with another kind of expression-form: W=W1*W2, and W1 is a Block diagonal matrix here, W1==[X0; 0X], X is 32 4 antenna discrete Fourier transform (DFT, Discrete Fourier Transform) beam space of wave beam composition, W1 is certain wave beam group that adjacent four wave beams in 32 beam spaces form, Rank1,2 times W1 has 16 selectable wave beam groups, and W2 is used for certain concrete wave beam of the wave beam group of selecting W representative and carries out the phase rotating of two polarised directions.
Along with technical development, antenna scale can expand to 16,32 from 8, and 64 is even up to a hundred, and along with the increase of antenna scale, corresponding CSI measures and the also corresponding increase of feedback complexity.If the CSI measurement pilot frequency method for designing before still continuing to use, measurement pilot frequency expense is doubled and redoubled the increase linearity along with antenna scale.In 4 port CSI-RS Resource Designs in current LTE system, each Physical Resource Block (PRB, Physical Resource Block) in, the CSI-RS of every port occupies 1 or 2 Resource Unit, the same day, wire gauge mould increased to when dozens or even hundreds of, the shared Resource Unit number of CSI-RS in every PRB will be especially huge, thereby cause the actual efficient resource number of unit that can be used for transfer of data very little.
Summary of the invention
The embodiment of the present invention provides sending method and the device of a kind of channel condition information measurement, reference signal, has effectively improved the resource utilization of transfer of data.
Embodiment of the present invention first aspect provides a kind of channel condition information method of measurement, and described method comprises:
Receive the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
The reference signal of the N based on described configuration reference signal port is carried out channel condition information CSI measurement, wherein, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Wherein, the reference signal of described N the reference signal port based on configuration is carried out channel condition information CSI measurement, comprising: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W: according to described the second pre-coding matrix, obtain channel quality indicator (CQI).
In the first possibility implementation of embodiment of the present invention first aspect, described method also comprises:
To described transmitting apparatus, feed back precoding matrix indicators PMI and the described channel quality indicator (CQI) that described the second pre-coding matrix is corresponding.
In conjunction with embodiment of the present invention first aspect, or in the first of first aspect possibility implementation, in the second possibility implementation of embodiment of the present invention first aspect:
The reference signal of the N of described configuration reference signal port, is sent in same subframe by described transmitting apparatus.
In conjunction with embodiment of the present invention first aspect, or in the first of first aspect or the second possibility implementation, in the third possibility implementation of embodiment of the present invention first aspect:
In described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
Embodiment of the present invention second aspect provides a kind of sending method of reference signal, and described method comprises:
Configure N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Send the reference signal configuration information of described N reference signal port;
According to the N of described configuration reference signal port and described reference signal configuration information, send the reference signal of N reference signal port of described configuration;
Wherein, the reference signal of the N of described configuration reference signal port is carried out channel condition information CSI measurement for receiving equipment to the reference signal of the N of described configuration reference signal port, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W:
Figure BDA0000450851360000042
according to described the second pre-coding matrix, obtain channel quality indicator (CQI).
In the first possibility implementation in conjunction with embodiment of the present invention second aspect, described method also comprises:
Receive corresponding precoding matrix indicators PMI and the described channel quality indicator (CQI) of described the second pre-coding matrix of described receiving equipment feedback, and carry out pre-encode operation according to described PMI and CQI.
In conjunction with embodiment of the present invention second aspect, or in the first of second aspect possibility implementation, in the second possibility implementation of embodiment of the present invention second aspect:
The reference signal of the N of described configuration reference signal port sends in same subframe.
In conjunction with embodiment of the present invention second aspect, or in the first of second aspect or the second possibility implementation, in the third possibility implementation of embodiment of the present invention second aspect:
In described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
The embodiment of the present invention third aspect provides a kind of channel condition information measurement mechanism, and described device comprises: be connected respectively to transceiver and processor in bus;
Described transceiver, for receiving the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
Described processor, the reference signal that is used for N reference signal port of the configuration receiving based on described transceiver is carried out channel condition information CSI measurement, wherein, and N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Wherein, the reference signal of described N the reference signal port based on configuration is carried out channel condition information CSI measurement, comprising: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W:
Figure BDA0000450851360000051
according to described the second pre-coding matrix, obtain channel quality indicator (CQI);
In the first possibility implementation of the embodiment of the present invention third aspect:
Described transceiver, also for feeding back precoding matrix indicators PMI and the channel quality indicator (CQI) that described the second pre-coding matrix is corresponding to described transmitting apparatus.
In conjunction with the embodiment of the present invention third aspect, or in the first of the third aspect possibility implementation, in the second possibility implementation of the embodiment of the present invention third aspect, described transceiver, also for receiving the reference signal of N reference signal port of the described configuration that described transmitting apparatus sends in same subframe.
In conjunction with the embodiment of the present invention third aspect, or in the first of the third aspect or the second possibility implementation, in the third possibility implementation of the embodiment of the present invention third aspect, in described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
Embodiment of the present invention fourth aspect provides a kind of dispensing device of reference signal, and described transmitting apparatus comprises: be connected respectively to processor and transceiver in bus,
Described processor, for configuring N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Described transceiver, be used for the reference signal configuration information of N the reference signal port that sends described processor configuration, according to the N of described configuration reference signal port and described reference signal configuration information, send the reference signal of N reference signal port of described configuration; Wherein, the reference signal of N reference signal port of configuration is carried out channel condition information CSI measurement for receiving equipment to the reference signal of the N of described configuration reference signal port, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W:
Figure BDA0000450851360000061
according to described the second pre-coding matrix, obtain channel quality indicator (CQI).
In the first possibility implementation of embodiment of the present invention fourth aspect:
Described transceiver, also for receiving corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the second pre-coding matrix of described receiving equipment feedback;
Described processor, also carries out pre-encode operation for corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the second pre-coding matrix receiving according to described transceiver.
In conjunction with embodiment of the present invention fourth aspect, or in the first of fourth aspect possibility implementation, in the second possibility implementation of embodiment of the present invention fourth aspect, described transceiver, specifically for sending the reference signal of the N of described configuration reference signal port in same subframe.
In conjunction with embodiment of the present invention fourth aspect, or in the first of fourth aspect or the second possibility implementation, in the third possibility implementation of embodiment of the present invention fourth aspect:
Reference signal port number in described M group reference signal port in every group of port is a prime number of main aerial port number.
The embodiment of the present invention the 5th aspect provides a kind of channel condition information method of measurement, and described method comprises:
Receive the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
The reference signal of the N of described configuration reference signal port is carried out to channel condition information CSI measurement; Wherein, described N reference signal port is comprised of M group reference signal port, and M>=1;
Wherein, the reference signal of the N based on described configuration reference signal port is carried out channel condition information measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value; According to described the first pre-coding matrix and/or the second pre-coding matrix, obtain the 3rd pre-coding matrix; According to described the 3rd pre-coding matrix, obtain channel quality indicator (CQI);
Wherein, in described the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term; And/or in described the second pre-coding matrix, between weighted value corresponding to described any two groups of reference signal ports, differ a phase term.
In the first possibility implementation of the embodiment of the present invention the 5th aspect, described method also comprises:
To described transmitting apparatus, feed back corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the 3rd pre-coding matrix.
In conjunction with the embodiment of the present invention the 5th aspect, or in the first of the 5th aspect possibility implementation, in the second possibility implementation aspect the embodiment of the present invention the 5th:
Described N is less than or equal to main aerial port number.
In conjunction with the embodiment of the present invention the 5th aspect, or in the first of the 5th aspect or the second possibility implementation, in the third possibility implementation aspect the embodiment of the present invention the 5th, described phase term is
Figure BDA0000450851360000071
form, wherein
Figure BDA0000450851360000072
for an angle between [0,2 π].
In conjunction with the embodiment of the present invention the 5th aspect, or the first of the 5th aspect to the third may implementation in any may implementation, in the 4th kind of possibility implementation aspect the embodiment of the present invention the 5th, describedly according to described the first pre-coding matrix and the second pre-coding matrix, obtain the 3rd pre-coding matrix, comprising:
Described the 3rd pre-coding matrix is expressed as:
Figure BDA0000450851360000073
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, weighted value corresponding to the corresponding i group reference signal port of i diagonal blocks in W1, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure BDA0000450851360000081
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
In conjunction with the embodiment of the present invention the 5th aspect, or the first of the 5th aspect to the third may implementation in any may implementation, aspect the embodiment of the present invention the 5th the 5th kind may implementation in:
Describedly according to described the first pre-coding matrix and the second pre-coding matrix, obtain the 3rd pre-coding matrix, comprising: described the 3rd pre-coding matrix is expressed as:
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M;
Figure BDA0000450851360000083
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
The embodiment of the present invention the 6th aspect provides a kind of sending method of reference signal, and described method comprises:
The reference signal of N reference signal port of configuration, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Send the reference signal configuration information of N reference signal port of described configuration, and according to the N of described configuration reference signal port and described reference signal configuration information, send reference signal;
Described reference signal is carried out channel condition information CSI measurement for the reference signal of the N of receiving equipment based on a described configuration reference signal port, obtain, according to the first pre-coding matrix and/or the 3rd definite pre-coding matrix of the second pre-coding matrix, according to described the 3rd pre-coding matrix, obtaining channel quality indicator (CQI);
Wherein, the reference signal of the N of described receiving equipment based on a described configuration reference signal port is carried out channel condition information CSI measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain described the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value;
Wherein, in described the first pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term; And/or in described the second pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term.
In the first possibility implementation of the embodiment of the present invention the 6th aspect, described method also comprises:
Receive corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the 3rd pre-coding matrix of described receiving equipment feedback, and carry out pre-encode operation according to described PMI and CQI.
In conjunction with the embodiment of the present invention the 6th aspect, or the first of the 6th aspect possibility implementation, in the second possibility implementation aspect the embodiment of the present invention the 6th:
Described N is less than or equal to main aerial port number.
In conjunction with the embodiment of the present invention the 6th aspect, or the first of the 6th aspect to the second may implementation in any may implementation, the third aspect the embodiment of the present invention the 6th may implementation in, described phase term is
Figure BDA0000450851360000091
form, wherein
Figure BDA0000450851360000092
for an angle between [0,2 π].
In conjunction with the embodiment of the present invention the 6th aspect, or the first of the 6th aspect to the third may implementation in any may implementation, aspect the embodiment of the present invention the 6th the 4th kind may implementation in,
Described the 3rd pre-coding matrix is expressed as:
Figure BDA0000450851360000093
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, weighted value corresponding to the corresponding i group reference signal port of i diagonal blocks in W1, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure BDA0000450851360000094
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
In conjunction with the embodiment of the present invention the 6th aspect, or the first of the 6th aspect to the third may implementation in any may implementation, aspect the embodiment of the present invention the 6th the 5th kind may implementation in:
Described the 3rd pre-coding matrix is expressed as:
Figure BDA0000450851360000101
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M;
Figure BDA0000450851360000102
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
The embodiment of the present invention the 7th aspect provides a kind of channel condition information measurement mechanism, and described device comprises: be connected to transceiver and processor in bus;
Described transceiver, for receiving the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
Described processor, carries out channel condition information CSI measurement for the reference signal of N reference signal port of configuration that described transceiver is received; Wherein, described N reference signal port is comprised of M group reference signal port, and M>=1;
Wherein, the reference signal of the N based on described configuration reference signal port is carried out channel condition information measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value; According to described the first pre-coding matrix and/or the second pre-coding matrix, obtain the 3rd pre-coding matrix; According to described the 3rd pre-coding matrix, obtain channel quality indicator (CQI);
Wherein, in described the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term; And/or, in described the second pre-coding matrix, between weighted value corresponding to described any two groups of reference signal ports, differ a phase term.
In the first possibility implementation of the embodiment of the present invention the 7th aspect:
Described transceiver, corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of the 3rd pre-coding matrix also obtaining for feed back described processor to described transmitting apparatus.
In conjunction with the embodiment of the present invention the 7th aspect, or the first of the 7th aspect possibility implementation, in the second possibility implementation aspect the embodiment of the present invention the 7th:
Described N is less than or equal to main aerial port number.
In conjunction with the embodiment of the present invention the 7th aspect, or the first of the 7th aspect to the second may implementation in any may implementation, the third aspect the embodiment of the present invention the 7th may implementation in, described phase term is
Figure BDA0000450851360000111
form, wherein
Figure BDA0000450851360000112
for an angle between [0,2 π].
In conjunction with the embodiment of the present invention the 7th aspect, or the first of the 7th aspect to the third may implementation in any may implementation, aspect the embodiment of the present invention the 7th the 4th kind may implementation in,
Described processor is specifically for being expressed as described the 3rd pre-coding matrix:
Figure BDA0000450851360000113
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, weighted value corresponding to the corresponding i group reference signal port of i diagonal blocks in W1, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure BDA0000450851360000114
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
In conjunction with the embodiment of the present invention the 7th aspect, or the first of the 7th aspect to the third may implementation in any may implementation, aspect the embodiment of the present invention the 7th the 5th kind may implementation in,
Described processor is specifically for being expressed as described the 3rd pre-coding matrix:
Figure BDA0000450851360000115
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M;
Figure BDA0000450851360000116
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
Embodiment of the present invention eight aspect provides a kind of dispensing device of reference signal, and described device comprises: be connected to transceiver and the processor of bus,
Described processor, for configuring the reference signal of N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Described transceiver, for sending the reference signal configuration information of N reference signal of described processor configuration, and according to the N of described configuration reference signal port and described reference signal configuration information, transmission reference signal;
Described reference signal is carried out channel condition information CSI measurement for the reference signal of the N of receiving equipment based on a described configuration reference signal port, obtain, according to the first pre-coding matrix and/or the 3rd definite pre-coding matrix of the second pre-coding matrix, according to described the 3rd pre-coding matrix, obtaining channel quality indicator (CQI);
Wherein, the reference signal of the N of described receiving equipment based on a described configuration reference signal port is carried out channel condition information CSI measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain described the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value;
Wherein, in the first pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term; And/or in the second pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term.
In the first possibility implementation of embodiment of the present invention eight aspect:
Described transceiver, also for receiving corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the 3rd pre-coding matrix of described receiving equipment feedback;
Described processor, also carries out pre-encode operation for the PMI and the CQI that receive according to described transceiver.
In conjunction with embodiment of the present invention eight aspect, or the first of eight aspect possibility implementation, in the second possibility implementation of embodiment of the present invention eight aspect,
Described N is less than or equal to main aerial port number.
In conjunction with embodiment of the present invention eight aspect, or the first of eight aspect to the second may implementation in any may implementation, in the third of embodiment of the present invention eight aspect may implementation, described phase term is form, wherein
Figure BDA0000450851360000122
for an angle between [0,2 π].
In conjunction with embodiment of the present invention eight aspect, or the first of eight aspect to the third may implementation in any may implementation, the 4th kind of embodiment of the present invention eight aspect may implementation in,
Described the 3rd pre-coding matrix is expressed as:
Figure BDA0000450851360000131
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and the corresponding i group of i diagonal blocks reference signal port in W1 is in corresponding weighted value, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure BDA0000450851360000132
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
In conjunction with embodiment of the present invention eight aspect, or the first of eight aspect to the third may implementation in any may implementation, the 5th kind of embodiment of the present invention eight aspect may implementation in,
Described the 3rd pre-coding matrix is expressed as:
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M;
Figure BDA0000450851360000134
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
The embodiment of the present invention provides a kind of channel condition information method of measurement and device, utilize the correlation of CSI measurement pilot frequency to design, greatly reduce the expense of measurement pilot frequency, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of channel condition information method of measurement general flow chart that the embodiment of the present invention one provides;
Fig. 2 is the sending method general flow chart of a kind of reference signal of providing of the embodiment of the present invention two;
Fig. 3 is a kind of aerial array simplified schematic diagram that the embodiment of the present invention three provides;
Fig. 4 is another aerial array simplified schematic diagram that the embodiment of the present invention three provides;
Fig. 5 is a kind of channel condition information measurement mechanism simplified schematic diagram that the embodiment of the present invention four provides;
Fig. 6 is the dispensing device simplified schematic diagram of a kind of reference signal of providing of the embodiment of the present invention five;
Fig. 7 is a kind of channel condition information method of measurement general flow chart that the embodiment of the present invention six provides;
Fig. 8 is the sending method general flow chart of a kind of reference signal of providing of the embodiment of the present invention seven;
Fig. 9 is that in the embodiment of the present invention eight, aerial array is divided into 4 equal antenna sets schematic diagrames;
Figure 10 is the schematic diagram of the pre-coding matrix information of the first two antenna sets in the embodiment of the present invention eight and the pre-coding matrix information common phase position of latter two antenna sets;
Figure 11 is phase difference simplified schematic diagram when phase information is reflected in W1 in the embodiment of the present invention eight;
Figure 12 is phase difference simplified schematic diagram when phase information is reflected in W2 in the embodiment of the present invention nine;
Figure 13 is a kind of channel condition information measurement mechanism simplified schematic diagram that the embodiment of the present invention ten provides;
Figure 14 is the dispensing device simplified schematic diagram of a kind of reference signal of providing of the embodiment of the present invention 11.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Along with increasing of antenna port number, whole aerial array is divided into multiple groups, according to the correlation of each antenna sets, carry out corresponding pilot measurement, can realize the CSI information measurement (comprising precoding matrix indicators PMI, channel quality indicator (CQI) etc.) to whole aerial array corresponding ports with less pilot measurement.
Embodiment mono-
The embodiment of the present invention provides a kind of channel condition information method of measurement, the method for the present embodiment be receiving equipment such as subscriber equipment or base station etc. are for receiving the performed method of equipment of signal, as shown in Figure 1, the method comprises flow chart:
Steps A 1, receives the reference signal configuration information that transmitting apparatus sends, and receives the reference signal of N reference signal port of configuration; Wherein transmitting apparatus can be the equipment for transmitted signal such as subscriber equipment or base station, and this transmitting apparatus is corresponding with the receiving equipment of carrying out the present embodiment method, such as working as transmitting apparatus, it is subscriber equipment, receiving equipment is base station, when transmitting apparatus is base station, receiving equipment is subscriber equipment.
Steps A 2, the reference signal of N the reference signal port to configuration is carried out channel condition information CSI measurement, wherein, and N>=6, described N reference signal port is comprised of M group reference signal port, M>=1.Wherein, reference signal configuration information refers to that transmitting apparatus sends the necessary information of reference signal on N reference signal port of configuration, such as reference signal port number, port numbers, the shared running time-frequency resource information of each reference signal port, with M group reference signal port be the grouping information of how to divide into groups etc., receiving equipment need to could receive according to this reference signal configuration information the reference signal of N reference signal port.
Wherein, in steps A 1, the reference signal of N reference signal port of configuration can be sent by transmitting apparatus in same subframe.Also it should be noted that, in described M group reference signal port, the reference signal port number of every group of port can be a prime number of main aerial port number.Antenna port sum or the corresponding antenna port sum of base station side antenna configuration during main aerial port number can Shi Tong community here business datum transmitting.
Wherein, the reference signal of N the reference signal port based on configuration in described steps A 2 is carried out channel condition information CSI measurement, and A21 realizes to A23 as follows, particularly:
Steps A 21, carries out CSI measurement to the reference signal of every group of port in described M group reference signal port respectively, obtains M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M;
Steps A 22, obtains the second pre-coding matrix W according to described the first pre-coding matrix:
Figure BDA0000450851360000151
the second pre-coding matrix W is obtained by M the first pre-coding matrix direct product;
Steps A 23, according to the second pre-coding matrix, obtaining channel quality indication is CQI.
Further, in other specific embodiment, receiving equipment can feed back corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of the second pre-coding matrix measuring to above-mentioned transmitting apparatus; Transmitter just can carry out pre-encode operation according to PMI and CQI like this.
In a kind of channel condition information method of measurement that the embodiment of the present invention provides, utilize the correlation of CSI measurement pilot frequency to design, the port number of the port number (being above-mentioned M group port) that makes transmitting apparatus configuration during much smaller than transmitting apparatus actual transmission data, such as the port number of transmitting apparatus actual transmission data is 32, can by 32 ports, effectively grouping and virtual weighting finally obtain 5 groups of reference signal ports (every group comprise 2 reference signal ports in the embodiment of the present invention, totally 10 reference signal ports), so final receiving equipment only need to carry out channel condition information measurement to the reference signal of these 10 ports, the reference signal of all of the port with receiving equipment in prior art need to be to transmitting apparatus actual transmission data time is carried out compared with CSI measures, method in the embodiment of the present invention has reduced the expense of measurement pilot frequency greatly, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Embodiment bis-
The embodiment of the present invention provides a kind of sending method of reference signal, the method of the present embodiment is the method for being carried out for the transmitting apparatus of transmitted signal by subscriber equipment or base station etc., method in its this embodiment is the performed method of transmitting apparatus that in above-described embodiment one, the receiving equipment described in method is corresponding, wherein receiving equipment can be that subscriber equipment or base station etc. are for receiving the equipment of signal, and this receiving equipment is corresponding with the transmitting apparatus of carrying out the present embodiment method, such as working as transmitting apparatus, it is subscriber equipment, receiving equipment is base station, when transmitting apparatus is base station, receiving equipment is subscriber equipment.
As shown in Figure 2, the method comprises method flow diagram in the present embodiment:
Step B1, configures N reference signal port, N>=6, and described N reference signal port is comprised of M group reference signal port, M>=1.
Step B2, the reference signal configuration information of N reference signal port of transmission, according to the reference signal configuration information of the N of described configuration reference signal port and reference signal port, sends the reference signal of described N reference signal port; Wherein reference signal configuration information refers to that transmitting apparatus sends the necessary information of reference signal on N reference signal port of configuration, such as reference signal port number, port numbers, the shared running time-frequency resource information of each reference signal port, with M group reference signal port be the grouping information of how to divide into groups etc., receiving equipment need to could receive according to this reference signal configuration information the reference signal of N reference signal port.
The reference signal of the N of above-mentioned configuration reference signal port is carried out channel condition information CSI measurement for receiving equipment, comprise: respectively the reference signal port of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first precoding, obtain the second pre-coding matrix W:
Figure BDA0000450851360000171
according to the second pre-coding matrix, obtain channel quality indicator (CQI).
Also it should be noted that, the reference signal of the N of described configuration reference signal port can send in same subframe.Reference signal port number in M group reference signal port in every group of port can be a prime number of main aerial port number.Antenna port sum or the corresponding antenna port sum of base station side antenna configuration during main aerial port number can Shi Tong community here business datum transmitting.
In the sending method of a kind of reference signal that the embodiment of the present invention provides, utilize the correlation of CSI measurement pilot frequency to design, the port number N(that makes transmitting apparatus configuration is above-mentioned M group port) port number during much smaller than transmitting apparatus actual transmission data, so final receiving equipment only need to carry out channel condition information measurement to the reference signal of this M group port, the reference signal of all of the port with receiving equipment in prior art need to be to transmitting apparatus actual transmission data time is carried out compared with CSI measures, method in the embodiment of the present invention has reduced the expense of measurement pilot frequency greatly, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Embodiment tri-
The embodiment of the present invention provides a kind of channel condition information method of measurement.
Before the scheme explanation that the embodiment of the present invention is provided, it will be appreciated that, the precoding matrix indicators (PMI) of all antenna ports, is the precoding matrix indicators PMI by multiple antenna port groups m, (wherein, PMI mrepresented the precoding matrix indicators of m group antenna port) combine and obtain, therefore, can the channel state information reference signals (CSI-RS of channel condition information measurement will be exclusively used in, Channel State Information-Reference Signal) antenna port be divided into multiple antenna port groups not at the same level, measure the precoding matrix indicators of each antenna port group not at the same level, thereby obtain the total precoding matrix indicators of all antenna ports.Referring to following formula:
PMI = PMI 1 ⊗ PMI 2 ⊗ · · · ⊗ PMI m
Measure the precoding matrix indicators of CSI-RS port not at the same level, be equivalent to and measuring reference signals carried out on spatial domain to multistep and disassemble and divide into groups.Particularly, take following transmitting apparatus main aerial port number 64 as example, 32 antenna ports of same polarization direction have been divided into 5 groups, wherein, each physical antenna port of same polarization direction in each circle, or virtual-antenna port forms a port set.And 64 whole antenna ports have been divided into 6 groups, the physics of each group or virtual-antenna port number are 2, i.e. 64=(2*2) * (2*2) * 2*2.Be described in detail as follows:
The antenna port of first group is by same polarization direction, as two levels of positive 45 degree polarised directions form to antenna port.If 2 levels of positive 45 degree polarised directions in the oval dotted line frame 1 of level in Fig. 3 are to antenna port.
Second group of antenna port is vertically comprised of to antenna port two of same polarization direction, as 2 of positive 45 degree polarised directions in oval dotted line frame 2 vertical in Fig. 3 vertically to antenna port.
First group measure with the CSI of second group of antenna port (comprise precoding matrix indicators with channel quality indication etc.) can guarantee the level that obtains to 2 antenna ports the channel condition information (such as precoding matrix indicators: PMI1 etc.) with the vertical first order reference signal antenna port of opening to 2 antenna ports.
The 3rd group of antenna port is comprised of to the first virtual-antenna port two levels, and wherein, the first virtual-antenna port is obtained by the weighting of first order reference signal antenna port omnidirectional.The level that obtains the second level as the virtual weighting of all reference signal antenna ports in the circle 3 of Fig. 3 is to virtual port one, and the level that all reference signal antenna ports virtual weighting of circle in 4 obtains the second level is to virtual port two, the 3rd group of antenna port of horizontal direction second level virtual port one and two recompositions of second level virtual port.
The 4th group of antenna port vertically forms to the first virtual-antenna port by two, and wherein, the first virtual-antenna port is obtained by the weighting of first order reference signal antenna port omnidirectional.As the virtual weighting of all reference signal antenna ports in the circle 3 of Fig. 3 obtain the second level vertically to virtual port one, and all reference signal antenna ports virtual weighting of circle in 5 obtain the second level vertically to virtual port two, vertically to second level virtual port one and the 4th group of antenna port of second level virtual port two recompositions.
The CSI(of the 3rd group and the 4th group antenna port comprises precoding matrix indicators and channel quality indication etc.) measure, can guarantee to obtain two levels to the first virtual port the channel condition information (such as precoding matrix indicators (PMI2) etc.) with two second level reference signal antenna ports of vertically opening to the first virtual port.
The 5th group of antenna port is comprised of two horizontal directions the second virtual-antenna port, and this second virtual-antenna port is obtained by the weighting of second level pilot tone antenna port omnidirectional.Be the virtual weighting of all reference signal antenna ports in the circle 11 of Fig. 3 obtain the third level level to virtual port one, and the level that all reference signal antenna ports virtual weighting of circle in 12 obtains the third level is to virtual port two, the 5th group of antenna port of horizontal direction third level virtual port one and two recompositions of third level virtual port.
The antenna port of the 6th group is comprised of two the 3rd virtual-antenna ports, wherein, the antenna port that the virtual weighting of all antenna ports of corresponding first polarised direction of first the 3rd virtual-antenna port obtains, and the antenna port that the virtual weighting of all antenna ports of second corresponding second polarised direction of the 3rd virtual-antenna port obtains.
Therefore, the basic antenna block of a 2*2 in the first order dimension respective antenna array of total pre-coding matrix information (as shown in the ringlet in Fig. 4+4 aerial arrays of 45 degree polarised directions), the basic antenna block (aerial arrays of 16+45 degree polarised directions that four ringlets as shown in the inferior great circle in Fig. 4 form) of (2*2) * (2*2) being formed by first order dimension in the second level dimension respective antenna array of total pre-coding matrix information, a basic block that in the third level dimension respective antenna array of total pre-coding matrix information, second level dimension forms (the great circle being formed by two great circles in figure below, because the number deficiency of time great circle is here to form complete third level dimension, therefore aerial array corresponding to third level dimension is that aerial array piece (2*2) * (2*2) corresponding to second level dimension is at horizontal direction two-dimensional expansion (2*2) * (2*2) * 2, after total precoding information of first polarised direction therefore obtaining, (being third level precoding) expands the pre-coding matrix information 64=(2*2 obtaining in all polarised directions again) * (2*2) * 2*2.
Use the grouping scheme of above-mentioned explanation, need the CSI-RS port number (comprising: physical antenna port and virtual-antenna port) of measurement as shown in Figure 4, be in Fig. 4, to indicate digital antenna port, wherein, physical antenna port comprises: be numbered 1,2,3,4 antenna ports of 4, virtual-antenna port comprises with virtual-antenna port shown in the circle in Fig. 4: be numbered 5,6,7,8,9,10,11,12 virtual-antenna port, the CSI-RS port of each circle representative is the virtual-antenna port after the virtual weighting of omnidirectional.
Due to the correlation between antenna port group, CSI measure required CSI-RS port total quantity be decompose after at different levels or respectively organize CSI-RS port number and.Further, described CSI measure required CSI-RS port number be total port number decompose all minimum prime numbers of obtaining and, as when total port number is 24, can be decomposed into due to 24: 24=2*2*2*3, therefore to measure required CSI-RS port number be 2+2+2+3 to CSI.Consider that the main aerial port number under LTE and LTE-A system mostly is 2 power, suppose that the antenna port of transmitting terminal adds up to 2^n, and the CSI-RS port number of the required measurement of this programme is only 2*n.Therefore, this scheme has greatly reduced complexity and the pilot-frequency expense of pilot design.
According to the explanation of the above-mentioned scheme that the embodiment of the present invention is provided, this scheme for the N(configuring wherein, conventionally N>=6) individual CSI-RS port carries out CSI measurement, wherein, the N of configuration CSI-RS port sends in a subframe simultaneously, and this N CSI-RS port is divided into M group according to predefine criterion, wherein, M is greater than zero integer, according to the CSI-RS port (port) in described every group, carries out CSI measurement, obtains the first pre-coding matrix W m: W m, m=1 ..., M, further according to described the first pre-coding matrix, obtains the second pre-coding matrix W:
Figure BDA0000450851360000201
according to described the second pre-coding matrix, obtain CQI, finally can feed back described the second pre-coding matrix PMI and CQI to transmitting apparatus.
Take above-mentioned main aerial port number 64 as example, every group in M group comprises 2 CSI-RS ports particularly, in the method providing in the embodiment of the present invention:
(1) according to 2 CSI-RS port in described every group, carry out CSI measurement, obtain the first pre-coding matrix:
Figure BDA0000450851360000202
r m=1,2; Wherein, m is m the first pre-coding matrix, and r mfor the order of described m the first pre-coding matrix.
(2), according to described the first pre-coding matrix, obtain the second pre-coding matrix W:
W = W ( 1 ) 2 × r 1 ⊗ W ( 2 ) 2 × r 2 ⊗ · · · ⊗ W ( M ) 2 × r M .
Embodiment tetra-
The embodiment of the present invention provides a kind of channel condition information measurement mechanism, i.e. receiving equipment described in above-described embodiment one, and as shown in Figure 5, described device comprises: be connected respectively to transceiver 501 and processor 502 in bus; Wherein, reference signal configuration information refers to that transmitting apparatus sends the necessary information of reference signal on N reference signal port of configuration, such as reference signal port number, port numbers, the shared running time-frequency resource information of each reference signal port, with M group reference signal port be the grouping information of how to divide into groups etc., receiving equipment need to could receive according to this reference signal configuration information the reference signal of N reference signal port.
Described transceiver 501, for receiving the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
Described processor 502, the reference signal that is used for N reference signal port of the configuration receiving based on described transceiver 501 is carried out channel condition information CSI measurement, wherein, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1.
Wherein, the reference signal of described N the reference signal port based on configuration is carried out channel condition information CSI measurement, comprising: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W:
Figure BDA0000450851360000204
according to the second pre-coding matrix, obtain channel quality indicator (CQI);
Optionally, described transceiver 501, also specifically for receiving the reference signal of N reference signal port of the described configuration that described transmitting apparatus sends in same subframe.Optionally, in described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
Further, in other specific embodiment, transceiver 501 is also for feed back precoding matrix indicators PMI and the channel quality indicator (CQI) that the second pre-coding matrix is corresponding to above-mentioned transmitting apparatus, to make transmitting apparatus carry out precoding.
A kind of channel condition information measurement mechanism that the embodiment of the present invention provides, utilize the correlation of CSI measurement pilot frequency to design, the port number of the port number (being above-mentioned M group) that makes transmitting apparatus configuration during much smaller than transmitting apparatus actual transmission data, 502 of processors that install in so final the present embodiment need to carry out channel condition information measurement to the reference signal of this M group port, carry out compared with CSI measures with the reference signal that needs all of the port need to be to transmitting apparatus actual transmission data time to receiving equipment in prior art, greatly reduced the expense of measurement pilot frequency, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Embodiment five
The embodiment of the present invention provides a kind of dispensing device of reference signal, i.e. transmitting apparatus described in the above embodiments two, and as shown in Figure 6, described device comprises: be connected to processor 601 and transceiver 602 in bus,
Described processor 601, for configuring N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Described transceiver 602, the reference signal configuration information of the N song reference signal port configuring for sending processor 601, and according to the N of described configuration reference signal port and described reference signal configuration information, send the reference signal of N reference signal port of configuration; Wherein reference signal configuration information refers to that transmitting apparatus sends the necessary information of reference signal on N reference signal port of configuration, such as reference signal port number, port numbers, the shared running time-frequency resource information of each reference signal port, with M group reference signal port be the grouping information of how to divide into groups etc., receiving equipment need to could receive according to this reference signal configuration information the reference signal of N reference signal port.
Wherein, the reference signal of the reference signal of N reference signal port of configuration N reference signal port to configuration for receiving equipment is carried out channel condition information CSI measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first precoding, obtain the second pre-coding matrix W:
Figure BDA0000450851360000221
according to the second pre-coding matrix, obtain channel quality indicator (CQI).
Further, the described transceiver 602 in the present embodiment, also for receiving corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of the second pre-coding matrix of described receiving equipment feedback; Described processor 601, also carries out pre-encode operation for corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of the second pre-coding matrix receiving according to described transceiver 601.
Optionally, described transceiver 602, specifically for sending the reference signal of the N of described configuration reference signal port in same subframe.Optionally, in described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
The dispensing device of a kind of reference signal that the embodiment of the present invention provides, utilize the correlation of CSI measurement pilot frequency to design, port number while making port number (being M group) that the processor 601 installing in the present embodiment configures much smaller than actual transmission data, so final receiving equipment only need to carry out channel condition information measurement to the reference signal of this M group port, carry out compared with CSI measures with the reference signal that needs all of the port need to be to transmitting apparatus actual transmission data time to receiving equipment in prior art, greatly reduced the expense of measurement pilot frequency, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Embodiment six
The embodiment of the present invention provides a kind of channel condition information method of measurement, and the method in the present embodiment is the performed another kind of channel condition information method of measurement of receiving equipment, and as shown in Figure 7, the method comprises:
Step C1, the reference signal of the reference signal configuration information that reception transmitting apparatus sends and N reference signal port of configuration.Wherein, the value of N can be less than or equal to main aerial port number.Wherein transmitting apparatus can be the equipment for transmitted signal such as subscriber equipment or base station, and this transmitting apparatus is corresponding with the receiving equipment of carrying out the present embodiment method, such as working as transmitting apparatus, it is subscriber equipment, receiving equipment is base station, when transmitting apparatus is base station, receiving equipment is subscriber equipment.
Step C2, carries out channel condition information CSI measurement to the reference signal of the N of described configuration reference signal port; Wherein, described N reference signal port is comprised of M group reference signal port, and M>=1.
Wherein, the reference signal of the N based on described configuration reference signal port carry out channel condition information CSI measurement specifically as follows C21 to C23, particularly,
Step C21, respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value, make a certain part in corresponding the first pre-coding matrix of this weighted value and/or the second pre-coding matrix.Wherein in the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term; And/or, in the second pre-coding matrix, between weighted value corresponding to described any two groups of reference signal ports, differ a phase term.Wherein, described phase term is form, wherein for an angle between [0,2 π].
Step C22, obtains the 3rd pre-coding matrix according to the first pre-coding matrix obtaining in above-mentioned steps C21 and/or the second pre-coding matrix.Particularly, the 3rd pre-coding matrix can carry out certain computing by the first pre-coding matrix and/or the second pre-coding matrix and obtains.
Particularly, when obtaining the first pre-coding matrix according to weighted value, need to be in the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term, when obtaining the 3rd pre-coding matrix according to the first pre-coding matrix, if final pre-coding matrix adopts two codebook structures, can obtain the 3rd pre-coding matrix by the first pre-coding matrix and another pre-coding matrix computing (mainly multiplying each other), wherein another pre-coding matrix can adopt third generation collaborative project (3rd Generation Partnership Project, 3GPP) the codebook structure of the 8th or 10 versions, such as a code book in this version of dicode of multiplexing the 10th version, the first pre-coding matrix W1 can be:
W 1 = W 11 W 12 . . . W 1 M Or wherein, W 1i(i=1,2 ... M) be the part of i group reference signal port in the first pre-coding matrix, described in can comprising in this part, examine the weighted value of signal port, be used for regulating the phase place transmitting.
When obtaining the second pre-coding matrix W2 according to weighted value, need to be in the second pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term, when obtaining the 3rd pre-coding matrix according to the second pre-coding matrix, if final pre-coding matrix adopts two codebook structures, can carry out computing (mainly multiplying each other) by another pre-coding matrix and the second pre-coding matrix W2 and obtain the 3rd pre-coding matrix, wherein another pre-coding matrix can adopt the codebook structure of 3GPP the 8th or 10 versions, such as a code book in this version of dicode of multiplexing the 10th version, wherein, the structure of the structure of the second pre-coding matrix W2 and above-mentioned the first pre-coding matrix is similar.
When obtaining the first pre-coding matrix W1 and the second pre-coding matrix W2 according to weighted value, need to be in the second pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term, and in the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term.When obtaining the 3rd pre-coding matrix according to the first pre-coding matrix and the second pre-coding matrix, if final pre-coding matrix adopts two codebook structures, can carry out computing (mainly multiplying each other) by the first pre-coding matrix W1 and the second pre-coding matrix W2 and obtain the 3rd pre-coding matrix.
Step C23, obtains channel quality indicator (CQI) according to the 3rd pre-coding matrix;
Further, in the present embodiment, obtaining after the 3rd pre-coding matrix, can also be to corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of above-mentioned transmitting apparatus feedback the 3rd pre-coding matrix, to make transmitting apparatus carry out pre-encode operation according to PMI and CQI.
Optionally, while obtaining the 3rd pre-coding matrix according to the first pre-coding matrix and the second pre-coding matrix in above-mentioned steps C22, specifically described the 3rd pre-coding matrix can be expressed as:
Figure BDA0000450851360000241
Wherein, W is the 3rd pre-coding matrix, and W1 is the first pre-coding matrix, weighted value corresponding to the corresponding i group reference signal port of i diagonal blocks in W1, and wherein, the value of i is 1 to M; W2 is the second pre-coding matrix,
Figure BDA0000450851360000242
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
Or, optional, while obtaining the 3rd pre-coding matrix according to the first pre-coding matrix and the second pre-coding matrix in above-mentioned steps C21, wherein, specifically described the 3rd pre-coding matrix is expressed as:
Figure BDA0000450851360000243
Wherein, W is the 3rd pre-coding matrix, and W1 is the first pre-coding matrix, and W2 is the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M; it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
A kind of channel condition information method of measurement that the embodiment of the present invention provides, this scheme utilizes the correlation between CSI measuring reference signals port to design, the port number when port number (being M group) that transmitting apparatus is configured is less than transmitting apparatus actual transmission data, so final receiving equipment only need to carry out channel condition information measurement to the reference signal of this M group port, the reference signal of all of the port with receiving equipment in prior art need to be to transmitting apparatus actual transmission data time is carried out compared with CSI measures, method in the embodiment of the present invention has reduced the expense of measurement pilot frequency greatly, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Embodiment seven
The embodiment of the present invention provides a kind of sending method of reference signal, the method of the present embodiment is the performed method of transmitting apparatus, the transmitting apparatus performed method corresponding with receiving equipment in method described in above-described embodiment six, wherein receiving equipment can be that subscriber equipment or base station etc. are for receiving the equipment of signal, and this receiving equipment is corresponding with the transmitting apparatus of carrying out the present embodiment method, such as working as transmitting apparatus, it is subscriber equipment, receiving equipment is base station, when transmitting apparatus is base station, receiving equipment is subscriber equipment.
As shown in Figure 8, the method comprises method flow diagram in the present embodiment:
Step D1, the reference signal of N reference signal port of configuration, described N reference signal port is comprised of M group port, M>=1;
Step D2, send the reference signal configuration information of N reference signal port of described configuration, and according to the N of described configuration reference signal port and reference signal configuration information, send reference signal, described reference signal is carried out channel condition information CSI measurement for the reference signal of the N of receiving equipment based on a described configuration reference signal port, obtain, according to the first pre-coding matrix and/or the 3rd definite pre-coding matrix of the second pre-coding matrix, according to the 3rd pre-coding matrix, obtaining channel quality indicator (CQI).Wherein receiving equipment can, as described in above-described embodiment six, not repeat at this in the process that specifically obtains the 3rd pre-coding matrix.
Wherein, the reference signal of the N of described receiving equipment based on a described configuration reference signal port is carried out channel condition information CSI measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain described the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value, to make a certain part of described weighted value in the first pre-coding matrix and/or the second pre-coding matrix.
Wherein, in the first pre-coding matrix, the weighted value that described any two groups of reference signal ports are corresponding differ a phase term; And/or in the second pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term; And the 3rd pre-coding matrix obtaining can carry out certain computing by the first pre-coding matrix and the second pre-coding matrix and obtain, and specifically sees shown in above-described embodiment six, at this, does not repeat.Described phase term can be
Figure BDA0000450851360000261
form, wherein for an angle between [0,2 π].
It should be noted that, the value of above-mentioned N can be less than or equal to main aerial port number.
Further, the transmitting apparatus of the present embodiment can also receive corresponding designator PMI and the channel quality indicator (CQI) of the 3rd pre-coding matrix of above-mentioned receiving equipment feedback; According to this PMI and CQI, carry out pre-encode operation.
The sending method of a kind of reference signal that the embodiment of the present invention provides, this scheme utilizes the correlation of CSI measurement pilot frequency to design, particularly, can configure M group reference signal port by transmitting apparatus, and the reference signal that receiving equipment only need to be organized reference signal port to M is carried out channel condition information measurement, and the port number of M group reference signal port number while being less than actual transmission data, the reference signal of all of the port need to be to transmitting apparatus actual transmission data time is carried out compared with CSI measures with receiving equipment in prior art like this, method in the embodiment of the present invention has reduced the expense of measurement pilot frequency greatly, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Embodiment eight
The embodiment of the present invention provides a kind of channel condition information method of measurement, along with the increase of antenna scale, the increase of antenna amount, correlation in array between all antennas, the correlation that can be split into multiple antenna sets represents, the correlation between each antenna sets has formed the correlation between the antenna of whole aerial array.Whole aerial array is divided into equal 4 antenna sets (group) 1 to 4 as shown in Figure 9.
In prior art, obtain corresponding PMI information with the CSI measurement of all antenna ports of array.Thereby needed measuring reference signals expense will be very huge when the same day, line was larger.
Along with the increase of antenna scale, it is large that the correlation between each antenna further becomes.Between the precoding matrix indicators of the group Wy of the precoding matrix indicators of the group Wx of the first two antenna sets 1 and 2 compositions and latter two antenna sets 3 and 4 compositions, be common phase position (Co-phasing) W as shown in figure 10.
Utilize the correlation between each antenna sets, do domain of dependence difference, be that first antenna sets measures after precoding designator PMI, second adjacent antenna sets only needs to measure the phase information of itself and first antenna sets, owing to just measuring phase information, do not need to measure again the precoding matrix indicators PMI identical with first antenna sets, thereby can greatly reduce the expense of required measurement pilot frequency.Particularly:
(suppose that phase information is reflected in W1 here) as shown in figure 11, it will be appreciated that, for determining that by the method for the method of being scheduled to or high-rise configuration phase information is reflected in the first pre-coding matrix in base station or subscriber equipment, or be reflected in the second pre-coding matrix.The PMI of the PMI of second group 2 and first group 1 differs a phase place Offset, and the PMI of the 3rd group 3 and the PMI of second group 2 differ a phase place Offset.And respectively the phase place Offset between the PMI of group can be reflected in W1.
The scheme that the embodiment of the present invention provides is all reference signal antenna port grouping in array, and measuring reference signals port does not on the same group complete different precoding matrix indicators and measures.
As first group of 1 measuring reference signals port is used for measuring first group of 1 corresponding precoding matrix indicators of the antenna port comprising.
And second group of 1 measuring reference signals port is used for measuring the phase difference of second group of 2 corresponding precoding designator of the antenna port comprising and first group of 1 corresponding precoding designator of the antenna port comprising.
The 3rd group of 3 measuring reference signals port is used for measuring the phase difference of the 3rd group of 3 corresponding precoding designator of the antenna port comprising and second group of 2 corresponding precoding designator of the antenna port comprising, by that analogy.
Wherein, first group of 1 measuring reference signals port can be all antenna ports in Group1 in Figure 11, and second group of 2 reference signal port can be comprised of i antenna port in i antenna port and Group2 in Group1 in Figure 11, wherein, i=1 ..., N group1, this N group1it is the antenna port number in Group1.The 3rd group of 3 reference signal port can be comprised of i antenna port in i antenna port and Group3 in upper figure Group2, wherein, and i=1 ..., N group2, this N group3it is the antenna port number in Group3.
Suppose that whole aerial array is divided into M group, the first pre-coding matrix of whole aerial array is the Block diagonal matrix being comprised of N piece.The 1st piece of the first pre-coding matrix W1 that the pre-coding matrix that first group of 1 reference signal port measures is whole aerial array, is designated as
Figure BDA0000450851360000271
other group except first group 1 is respectively with respect to the phase information of first group 1
Figure BDA0000450851360000281
therefore the pre-coding matrix of other group respectively i the piece of the first pre-coding matrix W1 of corresponding whole aerial array (i=2 ..., M), be designated as
Figure BDA0000450851360000282
the pre-coding matrix structure of the whole aerial array that above-mentioned measuring reference signals measures can be expressed as follows:
Figure BDA0000450851360000283
Embodiment nine
The embodiment of the present invention provides a kind of channel condition information method of measurement, along with the change of antenna scale is large, the increase of antenna amount, correlation in array between all antennas, the correlation that can be split into multiple antenna sets represents, the correlation between each antenna sets has formed the correlation between the antenna of whole aerial array.Whole aerial array is divided into 4 equal antenna sets can be as shown in Figure 9 above.
In prior art, obtain corresponding PMI information with the CSI measurement of all antenna ports of array, when the same day, line was larger, needed measuring reference signals expense will be very huge.
Along with the increase of antenna scale, it is large that the correlation between each antenna further becomes.The precoding matrix indicators of the precoding matrix indicators of the first two antenna sets 1 and 2 and latter two antenna sets 3 and 4 is common phase positions, can be as shown in Figure 10 above.
Utilize the correlation between each antenna sets, do domain of dependence difference, domain of dependence difference utilizes the correlation of pre-coding matrix corresponding to each antenna port group to carry out difference, can be understood as, first antenna port group measures after the information of corresponding precoding designator PMI, second adjacent antenna port group measures the phase information of itself and first antenna port group, owing to just measuring phase information, do not need to measure again the information of the precoding matrix indicators PMI identical with first antenna port group, thereby can greatly reduce the expense of required measurement pilot frequency.Particularly,
(suppose that phase information is reflected in W2 here) as shown in figure 12, the PMI of the PMI of second group of antenna port and first group of antenna port differs a phase place Offset, and the PMI of the 3rd group of antenna port and the PMI of second group of antenna port differ a phase place Offset.And the phase place Offset respectively organizing between the PMI of antenna port can be reflected by W2.
The scheme that the embodiment of the present invention provides is all antenna ports grouping in array, and reference signal port does not on the same group complete different precoding matrix indicators and measures, and specifically measures with the measurement of above-described embodiment eight China similarly, at this, do not repeat.
Suppose that whole aerial array is divided into M group, the second pre-coding matrix of whole aerial array is the column vector being comprised of N matrix-block.The first row element of the second pre-coding matrix W2 that the pre-coding matrix that first group of 1 reference signal port measures is whole aerial array, is designated as Y 1, other group except first group 1 is respectively with respect to the phase information of first group 1
Figure BDA0000450851360000291
therefore the pre-coding matrix of other group respectively the i of the second pre-coding matrix W2 of corresponding whole aerial array capable (i=2 ..., M), be designated as
Figure BDA0000450851360000292
the pre-coding matrix structure of the whole aerial array that above-mentioned measuring reference signals port obtains can be expressed as follows:
The scheme that provides of above-described embodiment six, seven is provided, and is to carry out CSI measurement according to N measuring reference signals port of configuration, described in precoding matrix indicators in the CSI information that measures by following M, partly form,
Described M part comprises the first pre-coding matrix W1, the first phase information, and the second phase information is until M-1 phase information.Described the first pre-coding matrix can be long-term broadband precoding matrix indicators, or short-term/subband precoding matrix indicators;
Final pre-coding matrix can be:
Figure BDA0000450851360000294
Or:
Figure BDA0000450851360000295
Embodiment ten
The embodiment of the present invention provides a kind of channel condition information measurement mechanism, i.e. receiving equipment described in above-described embodiment six, and as shown in figure 13, described device comprises: be connected to transceiver 131 and processor 132 in bus;
Described transceiver 131, for receiving the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration; Wherein, the value of N can be less than or equal to main aerial port number.
Described processor 132, carries out channel condition information CSI measurement for the reference signal of N reference signal port of configuration that described transceiver 131 is received; Wherein, described N reference signal port is comprised of M group reference signal port, and M>=1.
Wherein, when processor 132 carries out channel condition information CSI measurement in the reference signal of the N based on described configuration reference signal port, particularly: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value, make a certain part in corresponding the first pre-coding matrix of this weighted value and/or the second pre-coding matrix; According to the first pre-coding matrix and/or the second pre-coding matrix, obtain the 3rd pre-coding matrix; According to the 3rd pre-coding matrix, obtain channel quality indicator (CQI).Wherein processor 132 can, as described in above-described embodiment six, not repeat at this in the process that specifically obtains the 3rd pre-coding matrix.
Wherein, in the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term; And/or, in the second pre-coding matrix, between weighted value corresponding to described any two groups of reference signal ports, differing a phase term, phase term described here can be
Figure BDA0000450851360000301
form, wherein
Figure BDA0000450851360000302
can be [0,2 π] between angle and processor 132 when obtaining the 3rd pre-coding matrix, can carry out certain computing by the first pre-coding matrix and the second pre-coding matrix and obtain, and the 3rd pre-coding matrix obtaining can, described in above-described embodiment six, not repeat at this.
Further, in other specific embodiment, transceiver 131 can also be used for to corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of above-mentioned transmitting apparatus feedback the 3rd pre-coding matrix, to make transmitting apparatus carry out pre-encode operation according to PMI and CQI.
A kind of channel condition information measurement mechanism that the embodiment of the present invention provides, utilize the correlation between CSI measuring reference signals port to design, the port number when port number that transmitting apparatus is configured is less than transmitting apparatus actual transmission data, 132 of processors that install in the present embodiment like this need to be far smaller than to this M(the port number of actual transmission data) group port reference signal carry out channel condition information measurement, the reference signal of all of the port with receiving equipment in prior art need to be to transmitting apparatus actual transmission data time is carried out compared with CSI measures, greatly reduced the expense of witness mark port, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
Embodiment 11
The embodiment of the present invention provides a kind of dispensing device of reference signal, i.e. transmitting apparatus described in above-described embodiment seven, and as shown in figure 14, described device comprises: be connected to transceiver 141 and processor 142 in bus,
Described processor 142, for configuring the reference signal of N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Described transceiver 141, for sending the reference signal configuration information of N the reference signal port that described processor 142 configures, and according to the N of described configuration reference signal port and reference signal configuration information, send reference signal, described reference signal is carried out channel condition information CSI measurement for the reference signal of the N of receiving equipment based on a described configuration reference signal port, obtain, according to the first pre-coding matrix and/or the 3rd definite pre-coding matrix of the second pre-coding matrix, according to the 3rd pre-coding matrix, obtaining channel quality indicator (CQI).Wherein the 3rd pre-coding matrix can, as shown in above-described embodiment seven, not repeat at this.
Wherein, the reference signal of the N of described receiving equipment based on a described configuration reference signal port is carried out channel condition information CSI measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain described the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value, to make a certain part of described weighted value in the first pre-coding matrix and/or the second pre-coding matrix.Wherein receiving equipment can, as described in above-described embodiment six, not repeat at this in the process that specifically obtains the 3rd pre-coding matrix.
Wherein, in the first pre-coding matrix, the weighted value that described any two groups of reference signal ports are corresponding differ a phase term; And/or in the second pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term; And the 3rd pre-coding matrix obtaining can carry out certain computing by the first pre-coding matrix and the second pre-coding matrix and obtain, and specifically sees shown in above-described embodiment six, at this, does not repeat.Phase term described here can be
Figure BDA0000450851360000311
form, wherein
Figure BDA0000450851360000312
it can be an angle between [0,2 π].
It should be noted that, the value of above-mentioned N can be less than or equal to main aerial port number.
Further, the transceiver 141 of the present embodiment, also for receiving corresponding designator PMI and the channel quality indicator (CQI) of the 3rd pre-coding matrix of above-mentioned receiving equipment feedback; Processor 142, also carries out pre-encode operation for this PMI and the CQI that receive according to transceiver 141.
The dispensing device of a kind of reference signal that the embodiment of the present invention provides, this scheme utilizes the correlation of CSI measurement pilot frequency to design, particularly, can configure M group port by processor 142, and the reference signal that receiving equipment only need to be organized port to M is carried out channel condition information measurement, and the port number of the port number of M group reference signal while being less than actual transmission data, the reference signal of all of the port need to be to transmitting apparatus actual transmission data time is carried out compared with CSI measures with receiving equipment in prior art like this, greatly reduced the expense of measurement pilot frequency, especially along with the increase of antenna scale, effectively improved the resource utilization of transfer of data.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is can carry out the hardware that instruction is relevant by program to complete, this program can be stored in a computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
A kind of the channel condition information above embodiment of the present invention being provided is measured, sending method and the device of reference signal, be described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.

Claims (40)

1. a channel condition information method of measurement, is characterized in that, described method comprises:
Receive the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
The reference signal of the N based on described configuration reference signal port is carried out channel condition information CSI measurement, wherein, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Wherein, the reference signal of described N the reference signal port based on configuration is carried out channel condition information CSI measurement, comprising: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W: according to described the second pre-coding matrix, obtain channel quality indicator (CQI).
2. the method for claim 1, is characterized in that, described method also comprises:
To described transmitting apparatus, feed back precoding matrix indicators PMI and the described channel quality indicator (CQI) that described the second pre-coding matrix is corresponding.
3. method according to claim 1 and 2, is characterized in that,
The reference signal of the N of described configuration reference signal port, is sent in same subframe by described transmitting apparatus.
4. according to the method described in claims 1 to 3 any one, it is characterized in that,
In described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
5. a sending method for reference signal, is characterized in that, described method comprises:
Configure N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Send the reference signal configuration information of described N reference signal port;
According to the N of described configuration reference signal port and described reference signal configuration information, send the reference signal of N reference signal port of described configuration;
Wherein, the reference signal of the N of described configuration reference signal port is carried out channel condition information CSI measurement for receiving equipment to the reference signal of the N of described configuration reference signal port, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W:
Figure FDA0000450851350000021
according to described the second pre-coding matrix, obtain channel quality indicator (CQI).
6. method as claimed in claim 5, is characterized in that, described method also comprises:
Receive corresponding precoding matrix indicators PMI and the described channel quality indicator (CQI) of described the second pre-coding matrix of described receiving equipment feedback, and carry out pre-encode operation according to described PMI and CQI.
7. according to the method described in claim 5 or 6, it is characterized in that,
The reference signal of the N of described configuration reference signal port sends in same subframe.
8. according to the method described in claim 5 to 7 any one, it is characterized in that,
In described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
9. a channel condition information measurement mechanism, is characterized in that, described device comprises: be connected respectively to transceiver and processor in bus;
Described transceiver, for receiving the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
Described processor, the reference signal that is used for N reference signal port of the configuration receiving based on described transceiver is carried out channel condition information CSI measurement, wherein, and N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Wherein, the reference signal of described N the reference signal port based on configuration is carried out channel condition information CSI measurement, comprising: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W:
Figure FDA0000450851350000022
according to described the second pre-coding matrix, obtain channel quality indicator (CQI).
10. device as claimed in claim 9, is characterized in that,
Described transceiver, also for feeding back precoding matrix indicators PMI and the channel quality indicator (CQI) that described the second pre-coding matrix is corresponding to described transmitting apparatus.
11. according to device described in claim 9 or 10, it is characterized in that, described transceiver, also for receiving the reference signal of N reference signal port of the described configuration that described transmitting apparatus sends in same subframe.
12. install described in claim 9 to 11 any one, it is characterized in that, in described M group reference signal port, the reference signal port number of every group of port is a prime number of main aerial port number.
The dispensing device of 13. 1 kinds of reference signals, is characterized in that, described transmitting apparatus comprises: be connected respectively to processor and transceiver in bus,
Described processor, for configuring N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Described transceiver, be used for the reference signal configuration information of N the reference signal port that sends described processor configuration, according to the N of described configuration reference signal port and described reference signal configuration information, send the reference signal of N reference signal port of described configuration; Wherein, the reference signal of N reference signal port of configuration is carried out channel condition information CSI measurement for receiving equipment to the reference signal of the N of described configuration reference signal port, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain M the first pre-coding matrix, i.e. W i, wherein i=1,2 ..., M; According to described the first pre-coding matrix, obtain the second pre-coding matrix W:
Figure FDA0000450851350000031
according to described the second pre-coding matrix, obtain channel quality indicator (CQI).
14. devices as described in right 13, is characterized in that,
Described transceiver, also for receiving corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the second pre-coding matrix of described receiving equipment feedback;
Described processor, also carries out pre-encode operation for corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the second pre-coding matrix receiving according to described transceiver.
15. according to device described in claim 13 or 14, it is characterized in that, described transceiver, specifically for sending the reference signal of the N of described configuration reference signal port in same subframe.
16. install described in 15 any one, it is characterized in that,
Reference signal port number in described M group reference signal port in every group of port is a prime number of main aerial port number.
17. 1 kinds of channel condition information method of measurement, is characterized in that, described method comprises:
Receive the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
The reference signal of the N of described configuration reference signal port is carried out to channel condition information CSI measurement; Wherein, described N reference signal port is comprised of M group reference signal port, and M>=1;
Wherein, the reference signal of the N based on described configuration reference signal port is carried out channel condition information measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value; According to described the first pre-coding matrix and/or the second pre-coding matrix, obtain the 3rd pre-coding matrix; According to described the 3rd pre-coding matrix, obtain channel quality indicator (CQI);
Wherein, in described the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term; And/or in described the second pre-coding matrix, between weighted value corresponding to described any two groups of reference signal ports, differ a phase term.
18. methods as claimed in claim 17, is characterized in that, described method also comprises:
To described transmitting apparatus, feed back corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the 3rd pre-coding matrix.
19. according to the method described in claim 17 or 18, it is characterized in that,
Described N is less than or equal to main aerial port number.
20. according to claim 17 to the method described in 19 any one, it is characterized in that, described phase term is
Figure FDA0000450851350000041
form, wherein
Figure FDA0000450851350000042
for an angle between [0,2 π].
21. according to the method described in claim 17～20 any one, it is characterized in that, describedly according to described the first pre-coding matrix and the second pre-coding matrix, obtains the 3rd pre-coding matrix, comprising:
Described the 3rd pre-coding matrix is expressed as:
Figure FDA0000450851350000043
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, weighted value corresponding to the corresponding i group reference signal port of i diagonal blocks in W1, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure FDA0000450851350000044
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
22. according to the method described in claim 17～20 any one, it is characterized in that,
Describedly according to described the first pre-coding matrix and the second pre-coding matrix, obtain the 3rd pre-coding matrix, comprising: described the 3rd pre-coding matrix is expressed as:
Figure FDA0000450851350000051
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M;
Figure FDA0000450851350000052
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
The sending method of 23. 1 kinds of reference signals, is characterized in that, described method comprises:
The reference signal of N reference signal port of configuration, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Send the reference signal configuration information of N reference signal port of described configuration, and according to the N of described configuration reference signal port and described reference signal configuration information, send reference signal;
Described reference signal is carried out channel condition information CSI measurement for the reference signal of the N of receiving equipment based on a described configuration reference signal port, obtain, according to the first pre-coding matrix and/or the 3rd definite pre-coding matrix of the second pre-coding matrix, according to described the 3rd pre-coding matrix, obtaining channel quality indicator (CQI);
Wherein, the reference signal of the N of described receiving equipment based on a described configuration reference signal port is carried out channel condition information CSI measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain described the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value;
Wherein, in described the first pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term; And/or in described the second pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term.
24. methods as claimed in claim 23, is characterized in that, described method also comprises:
Receive corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the 3rd pre-coding matrix of described receiving equipment feedback, and carry out pre-encode operation according to described PMI and CQI.
25. according to the method described in claim 23 or 24, it is characterized in that,
Described N is less than or equal to main aerial port number.
26. according to the method described in claim 23 to 25 any one, it is characterized in that, described phase term is
Figure FDA0000450851350000061
form, wherein
Figure FDA0000450851350000062
for an angle between [0,2 π].
27. according to the method described in claim 23～26 any one, it is characterized in that,
Described the 3rd pre-coding matrix is expressed as:
Figure FDA0000450851350000063
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, weighted value corresponding to the corresponding i group reference signal port of i diagonal blocks in W1, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure FDA0000450851350000064
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
28. according to the method described in claim 23～26 any one, it is characterized in that,
Described the 3rd pre-coding matrix is expressed as:
Figure FDA0000450851350000065
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M;
Figure FDA0000450851350000066
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
29. 1 kinds of channel condition information measurement mechanisms, is characterized in that, described device comprises: be connected to transceiver and processor in bus;
Described transceiver, for receiving the reference signal of the reference signal configuration information of transmitting apparatus transmission and N reference signal port of configuration;
Described processor, carries out channel condition information CSI measurement for the reference signal of N reference signal port of configuration that described transceiver is received; Wherein, described N reference signal port is comprised of M group reference signal port, and M>=1;
Wherein, the reference signal of the N based on described configuration reference signal port is carried out channel condition information measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value; According to described the first pre-coding matrix and/or the second pre-coding matrix, obtain the 3rd pre-coding matrix; According to described the 3rd pre-coding matrix, obtain channel quality indicator (CQI);
Wherein, in described the first pre-coding matrix, between weighted value corresponding to any two groups of reference signal ports, differ a phase term; And/or, in described the second pre-coding matrix, between weighted value corresponding to described any two groups of reference signal ports, differ a phase term.
30. according to device described in claim 29, it is characterized in that,
Described transceiver, corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of the 3rd pre-coding matrix also obtaining for feed back described processor to described transmitting apparatus.
31. according to device described in claim 29 or 30, it is characterized in that,
Described N is less than or equal to main aerial port number.
32. install described in claim 29 to 31 any one, it is characterized in that, described phase term is
Figure FDA0000450851350000071
form, wherein
Figure FDA0000450851350000072
for an angle between [0,2 π].
33. install described in claim 29 to 31 any one, it is characterized in that,
Described processor is specifically for being expressed as described the 3rd pre-coding matrix:
Figure FDA0000450851350000073
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, weighted value corresponding to the corresponding i group reference signal port of i diagonal blocks in W1, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure FDA0000450851350000074
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
34. install described in claim 29 to 31 any one, it is characterized in that,
Described processor is specifically for being expressed as described the 3rd pre-coding matrix:
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M; it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
The dispensing device of 35. 1 kinds of reference signals, is characterized in that, described device comprises: be connected to transceiver and the processor of bus,
Described processor, for configuring the reference signal of N reference signal port, N>=6, described N reference signal port is comprised of M group reference signal port, M>=1;
Described transceiver, for sending the reference signal configuration information of N reference signal of described processor configuration, and according to the N of described configuration reference signal port and described reference signal configuration information, transmission reference signal;
Described reference signal is carried out channel condition information CSI measurement for the reference signal of the N of receiving equipment based on a described configuration reference signal port, obtain, according to the first pre-coding matrix and/or the 3rd definite pre-coding matrix of the second pre-coding matrix, according to described the 3rd pre-coding matrix, obtaining channel quality indicator (CQI);
Wherein, the reference signal of the N of described receiving equipment based on a described configuration reference signal port is carried out channel condition information CSI measurement, comprise: respectively the reference signal of every group of port in described M group reference signal port is carried out to CSI measurement, obtain described every group of weighted value that reference signal port is corresponding, and obtain described the first pre-coding matrix and/or the second pre-coding matrix according to described weighted value;
Wherein, in the first pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term; And/or in the second pre-coding matrix, described any two groups of weighted values corresponding to reference signal port differ a phase term.
36. devices as claimed in claim 35, is characterized in that,
Described transceiver, also for receiving corresponding precoding matrix indicators PMI and the channel quality indicator (CQI) of described the 3rd pre-coding matrix of described receiving equipment feedback;
Described processor, also carries out pre-encode operation for the PMI and the CQI that receive according to described transceiver.
37. according to device described in claim 35 or 36, it is characterized in that,
Described N is less than or equal to main aerial port number.
38. install described in claim 36 to 37 any one, it is characterized in that, described phase term is form, wherein
Figure FDA0000450851350000092
for an angle between [0,2 π].
39. install described in claim 36～38 any one, it is characterized in that,
Described the 3rd pre-coding matrix is expressed as:
Figure FDA0000450851350000093
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and the corresponding i group of i diagonal blocks reference signal port in W1 is in corresponding weighted value, and wherein, the value of i is 1 to M; W2 is described the second pre-coding matrix,
Figure FDA0000450851350000094
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
40. install described in claim 36～38 any one, it is characterized in that,
Described the 3rd pre-coding matrix is expressed as:
Figure FDA0000450851350000095
Wherein, W is described the 3rd pre-coding matrix, and W1 is described the first pre-coding matrix, and W2 is described the second pre-coding matrix, weighted value corresponding to the capable corresponding i group reference signal port of i in W2, and wherein, the value of i is 1 to M;
Figure FDA0000450851350000096
it is weighted value that i+1 group reference signal port is corresponding and the phase difference of the 1st group of weighted value that reference signal port is corresponding.
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