CN109327251A

CN109327251A - Processing method, device, relevant device and storage medium based on PMI

Info

Publication number: CN109327251A
Application number: CN201710647781.7A
Authority: CN
Inventors: 倪吉庆; 周伟; 孙奇
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Co Ltd
Priority date: 2017-08-01
Filing date: 2017-08-01
Publication date: 2019-02-12
Also published as: WO2019024611A1

Abstract

The invention discloses a kind of processing method, device, relevant device and storage mediums for being based on pre-coding matrix instruction (PMI).Wherein, method includes: to carry out channel measurement to subband and to base station feedback channel state information (CSI)；Wherein, when feeding back CSI, when the bandwidth corresponding part of the subband or whole control channel bandwidth, the PMI and the first information of feedback indicate the pre-coding matrix of the subband data channel and the precoding vector of the subband control channel；The data channel transmits data using multithread precoding mode.

Description

Processing method, device, relevant device and storage medium based on PMI

Technical field

The present invention relates to wireless communication fields, more particularly to one kind to be based on pre-coding matrix instruction (PMI, Precoding Matrix Index) processing method, device, terminal, base station and computer readable storage medium.

Background technique

In long term evolution (LTE, Long Term Evolution) system, physical layer control channel is using fixed biography Transmission diversity scheme, and data channel can use a variety of transmission modes, comprising: transmission mode 1 arrives transmission mode 10.Wherein, exist There are many closed loop transmission modes, such as transmission mode 4 into transmission mode 10 for transmission mode 1: Closed-Loop Spatial Multiplexing transmits mould Formula 5:MU-MIMO, 6 single layer closed-loop MIMO of transmission mode etc..In these closed loop transmission modes, it is required to terminal feedback channel shape State information (CSI, Channel State Information), then base station carries out corresponding transmission mode based on the CSI of feedback Configuration.

For down control channel coverage enhancement, consider newly to eat dishes without rice or wine in the 5th third-generation mobile communication technology (5G) using single layer The transmission mode of wave beam forming can effectively promote covering performance.In order to support closed loop single layer pre-coding scheme, control channel It is also required to PMI information.

In order to support the closed loop single layer pre-coding scheme of control channel, a kind of scheme is the number for directlying adopt a certain subband It is believed that PMI of the PMI in road as the control channel of corresponding subband.But in this scheme, if terminal feedback is multilayer The instruction of code word, then the PMI of data channel cannot be directly as the PMI of the control channel to a subband.

Therefore, how to realize that the PMI of control channel is anti-in the case where control channel supports closed loop single layer pre-coding scheme Feedback is current urgent problem to be solved.

Summary of the invention

To solve existing technical problem, the embodiment of the present invention provide a kind of processing method based on PMI, device, Terminal, base station and computer readable storage medium.

The technical solution of the embodiment of the present invention is achieved in that

The embodiment of the invention provides a kind of processing methods based on PMI, comprising:

Channel measurement is carried out to subband and to base station feedback CSI；Wherein,

When feeding back CSI, when the bandwidth corresponding part of the subband or whole control channel bandwidth, the PMI of feedback and The first information indicates the pre-coding matrix of the subband data channel and the precoding vector of the subband control channel；It is described Data channel transmits data using multithread precoding mode.

In above scheme, the mode for feeding back PMI and the first information includes following one:

The PMI of the subband data channel is fed back, the feedback first information is sky；The PMI of the subband data channel is indicated The pre-coding matrix of subband data channel；And the vector of the fixation position in the pre-coding matrix or the vector of random site For determining the precoding vector of the subband control channel for base station；

The PMI of the subband data channel is fed back, and feeding back the first information is not sky, the first information is used for for base It stands and determines the precoding vector of the subband control channel.

In above scheme, the method also includes:

Receive wireless heterogeneous networks (RRC) signaling or system information that base station is sent；

The RRC signaling or system information are parsed, the feedback system of PMI and the first information is obtained；

Correspondingly, PMI and the first information are fed back according to obtained mode.

In above scheme, the PMI of the subband data channel is fed back, and when to feed back the first information be not sky, meet following One of feature:

The first information independently indicates the precoding vector of the subband control channel；

The precoding of subband control channel described in the PMI joint instructions of the first information and the subband data channel Vector.

In above scheme, the control letter of subband described in the PMI joint instructions of the first information and the subband data channel When the precoding vector in road, the PMI of the subband data channel indicates the code word in a code book；The first information instruction The precoding vector of specific position in the code word.

The embodiment of the invention also provides a kind of processing methods based on PMI, comprising:

Receive the CSI of the subband of terminal feedback；The bandwidth corresponding part of the subband or whole control channel bandwidth；

The CSI is parsed, PMI and the first information are obtained；The subband data is determined using the PMI and the first information The precoding vector of the pre-coding matrix of channel and the subband control channel；The subband data channel is prelisted using multithread Code mode transmits data.

In above scheme, pre-coding matrix and the institute of the subband data channel are determined using the PMI and the first information The mode for stating the precoding vector of subband control channel includes following one:

When the PMI and the first information that the PMI is the subband data channel are sky, the sub-band number is utilized It is believed that the PMI in road determines the pre-coding matrix of the subband data channel；And it is the PMI of the subband data channel is corresponding Precoding vector of the vector of fixation position or random site in pre-coding matrix as the subband control channel；

When the PMI and the first information that the PMI is the subband data channel are not sky, the subband is utilized The PMI of data channel determines the pre-coding matrix of the subband data channel；And the subband is determined using the first information The precoding vector of control channel.

In above scheme, the side of the precoding vector that the subband control channel is determined using the first information Formula includes one of following manner:

The precoding vector of the subband control channel is independently determined using the first information；

Combined using the PMI of the first information and the subband data channel and determines the pre- of the subband control channel Coding vector.

It is described to combine the determining son using the PMI of the first information and the subband data channel in above scheme Precoding vector with control channel, comprising:

Using the PMI of the subband data channel, the code word in a code book is determined；

The precoding vector of specific position in the code word that the first information is indicated is controlled as the subband The precoding vector of channel.

In above scheme, before the CSI of the subband for receiving terminal feedback, the method also includes:

The feedback system of PMI and the first information are indicated to the terminal by RRC signaling or system information.

In above scheme, the method also includes:

When the subband data channel transmits data using single stream precoding mode, by the subband data channel PMI of the PMI directly as the subband control channel.

The embodiment of the present invention provides a kind of processing unit based on PMI again, comprising:

Measurement module, for carrying out channel measurement to subband；

Feedback module is used for base station feedback CSI；Wherein,

The embodiment of the invention also provides a kind of processing units based on PMI, comprising:

Receiving unit, the CSI of the subband for receiving terminal feedback；The bandwidth corresponding part of the subband or all control Channel width processed；

Resolution unit obtains PMI and the first information for parsing the CSI；

Determination unit, for determined using the PMI and the first information subband data channel pre-coding matrix and The precoding vector of the subband control channel；The subband data channel transmits data using multithread precoding mode.

The embodiment of the present invention provides a kind of terminal again, comprising:

First processor, for carrying out channel measurement to subband；

First communication interface is used for base station feedback CSI；Wherein,

In above scheme, the mode of the first communication interface feedback PMI and the first information includes following one:

In above scheme, first communication interface is also used to receive the radio resource control RRC signaling of base station transmission Or system information；

The first processor is also used to parse the RRC signaling or system information, obtains the anti-of PMI and the first information Feedback mode；

Correspondingly, first communication interface feeds back PMI and the first information according to obtained mode.

The embodiment of the invention also provides a kind of base stations, comprising:

Second communication interface, the CSI of the subband for receiving terminal feedback；The bandwidth corresponding part of the subband is complete Portion's control channel bandwidth；

Second processor obtains PMI and the first information for parsing the CSI；It is true using the PMI and the first information The pre-coding matrix of the fixed subband data channel and the precoding vector of the subband control channel；The sub-band number it is believed that Road data are transmitted using multithread precoding mode.

In above scheme, the second processor is specifically used for executing one of following operation:

One of in above scheme, the second processor, for performing the following operations:

In above scheme, the second processor is specifically used for:

In above scheme, second communication interface, be also used to receive terminal feedback subband CSI before, pass through The feedback system of PMI and the first information are indicated to the terminal by RRC signaling or system information.

In above scheme, the second processor is also used to:

The embodiment of the present invention provides a kind of terminal again, and the terminal includes: first processor, first memory and deposits Store up the computer program that can be run on the first memory and on the first processor；

Wherein, the first processor is for executing the step of terminal side either method when running the computer program Suddenly.

The embodiment of the invention also provides a kind of base stations characterized by comprising second processor, second memory and It is stored in the computer program that can be run on the second memory and in the second processor；

Wherein, the second processor is for executing the step of base station side either method when running the computer program Suddenly.

The embodiment of the present invention provides a kind of computer readable storage medium again, is stored thereon with computer program, described The step of terminal side either method is realized when computer program is executed by processor, or realize the step of base station side either method Suddenly.

Processing method based on PMI, device, terminal, base station and computer-readable storage medium provided in an embodiment of the present invention Matter when feeding back CSI, has fed back PMI and the first information, with feedback when data channel is transmitted using multithread precoding mode PMI and the first information indicate the subband data channel pre-coding matrix and the subband control channel precoding to Amount, realizes the feedback of control channel PMI, so, it is possible support and control channel list stream precoding transmissions mode, so as to have Effect ground promotes the covering performance of down control channel, promotes the reliability of control information transmission.

Detailed description of the invention

In attached drawing (it is not necessarily drawn to scale), similar appended drawing reference can describe in different views Similar component.Attached drawing generally shows each embodiment discussed herein by way of example and not limitation.

Fig. 1 is the terminal of that embodiment of the invention side group in the processing method flow diagram of PMI；

Fig. 2 is the corresponding code book schematic diagram of 2 antenna port of the embodiment of the present invention；

Fig. 3 is the corresponding code book schematic diagram of 4 antenna port of the embodiment of the present invention；

Fig. 4 is processing method flow diagram of the base station side of the embodiment of the present invention based on PMI；

Fig. 5 is processing method flow diagram of the embodiment of the present invention based on PMI；

Fig. 6 is a kind of processing device structure diagram based on PMI of the embodiment of the present invention；

Fig. 7 is processing device structure diagram of the another kind of the embodiment of the present invention based on PMI；

Fig. 8 is the terminal of that embodiment of the invention structural schematic diagram；

Fig. 9 is architecture of base station of embodiment of the present invention schematic diagram；

Figure 10 is side group of the embodiment of the present invention in the processing system structural schematic diagram of PMI.

Specific embodiment

The present invention is described in further detail again with reference to the accompanying drawings and embodiments.

In order to support the closed loop single layer pre-coding scheme of control channel, a kind of scheme is the number for directlying adopt a certain subband It is believed that PMI of the PMI in road as the control channel of corresponding subband.When data channel is using single stream pre-coding scheme, Ke Yizhi It connects and uses this scheme.But when terminal feedback be multilayer code word instruction, i.e., data channel use multithread precoding side When formula, then it cannot be directly used in the single layer transmission of control channel, i.e., it cannot be directly by the PMI of data channel directly as right Answer the PMI of the control channel of subband.

Based on this, in various embodiments of the present invention: when terminal is to base station feedback CSI, when the bandwidth of subband corresponds to portion Point or when whole control channel bandwidth, the PMI and the first information of feedback indicate the subband data channel pre-coding matrix and The precoding vector of the subband control channel；The data channel transmits data using multithread precoding mode；And in base station The CSI for parsing the subband of terminal feedback, obtains PMI and the first information；The subband is determined using the PMI and the first information The precoding vector of the pre-coding matrix of data channel and the subband control channel.

Scheme provided in an embodiment of the present invention, it can be understood as control channel precoding is indicated by data channel PMI Scheme, when data channel using multithread precoding mode transmit when, when feed back CSI, fed back PMI and the first information, use The PMI and the first information of feedback indicate the pre-coding matrix of the subband data channel and prelisting for the subband control channel Code vector so, it is possible support and control channel list stream precoding transmissions mode to realize the feedback of control channel PMI, So as to effectively promote the covering performance of down control channel, the reliability of control information transmission is promoted.

The embodiment of the invention provides a kind of processing methods based on PMI, are applied to terminal, as shown in Figure 1, this method Include:

Step 101: channel measurement is carried out to subband；

Step 102: to base station feedback CSI.

Wherein, when feeding back CSI, when the bandwidth corresponding part of the subband or whole control channel bandwidth, feedback PMI and the first information indicate the pre-coding matrix of the subband data channel and the precoding vector of the subband control channel； The data channel transmits data using multithread precoding mode.

It should be understood that when data channel list stream precoding mode transmits data, the PMI of the terminal feedback is The PMI of the data channel, that is to say, that base station uses the PMI of data channel directly as the PMI of control channel.

The transmission of scheme provided in an embodiment of the present invention, data and control information uses closed loop transmission mode.

Base station carries out the configuration of corresponding transmission mode based on the CSI that terminal is fed back.Specifically, CSI includes: channel matter Amount instruction (CQI, Channel Quality Index), order instruction (RI, Rand Index), PMI and precoding type indicate (PTI, Precoding Type Index) etc..Wherein, PMI and RI and antenna port number have direct corresponding relationship, for example For, it is the instruction of a code word in single layer code book that RI 1, PMI be corresponding；RI=2, PMI corresponding are one in the double-deck code book The instruction of a code word；It is a code book in 4/8 layer of code book that RI=4/8, PMI be corresponding；Etc..The corresponding code of 2 antenna ports This code book difference corresponding with 4 antennas is as shown in Figures 2 and 3.

There is direct corresponding relationship based on PMI and RI and antenna port number, in embodiments of the present invention, in the CSI of feedback In, (show that data channel transmits data using single stream precoding mode) as RI=1, data can be directly used in base station side PMI of the channel PMI as the control channel of corresponding subband；Work as RI >=2 (show that data channel is passed using multithread precoding mode Transmission of data) when, pre-coding matrix and the subband control of the subband data channel are indicated using PMI and the first information The precoding vector of channel.

Here, when practical application, it may not be necessary to except the additional bit of the PMI of data channel, select data channel Precoding vector of one vector of fixation position or random site in multithread code word indicated by PMI as control channel.

Based on this, in some embodiments, the mode for feeding back PMI and the first information be may is that

The PMI of the subband data channel is fed back, the feedback first information is sky；The PMI of the subband data channel is indicated The pre-coding matrix of subband data channel；And the vector of the fixation position in the pre-coding matrix or the vector of random site For determining the precoding vector of the subband control channel for base station.

Feedback divisor number can also be needed it is believed that additional information bit outside the PMI in road, in indication feedback multilayer code word Precoding vector of the precoding vector as control channel, can effectively support data channel and control channel in this way Unified Precoding Design, so as to reduce signaling process and number of feedback bits.

Here, as the PMI for feeding back the subband data channel, and when to feed back the first information be not sky, the first information It can independently indicate the precoding vector of the subband control channel；Alternatively, the first information and the subband data channel PMI joint instructions described in subband control channel precoding vector.

Wherein, when practical application, base station and terminal can be to arrange specifically using which kind of side in a manner of above two in advance Formula realizes the instruction of the precoding vector of the subband control channel.

In some embodiments, the subband described in the PMI joint instructions of the first information and the subband data channel When the precoding vector of control channel, the PMI of the subband data channel indicates the code word in a code book；First letter Breath indicates the precoding vector of specific position in the code word.

Since there are two types of the modes of feedback PMI and the first information, so when practical application, when terminal supports two kinds of feedbacks Mode when, base station can feed back PMI and the first information using which kind of mode by high-level signaling configurating terminal.

Based on this, in some embodiments, this method can also include:

Receive RRC signaling or system information that base station is sent；

Correspondingly, when feeding back CSI, PMI and the first information are fed back according to obtained mode.

Certainly, when terminal only supports a kind of feedback system, then using the feedback system feedback PMI and the itself supported One information.

Base station needs the CSI fed back based on terminal to perform corresponding processing, and is based on this, the embodiment of the invention also provides A kind of processing method based on PMI is applied to base station, as shown in figure 4, this method comprises:

Step 401: receiving the CSI of the subband of terminal feedback；

Here, the bandwidth corresponding part of the subband or whole control channel bandwidth.

Step 402: parsing the CSI, obtain PMI and the first information；

Step 403: determining the pre-coding matrix of the subband data channel and described using the PMI and the first information The precoding vector of subband control channel.

Wherein, the subband data channel transmits data using multithread precoding mode.

Here, described when the subband data channel transmits data using single stream precoding mode when practical application Base station is by the PMI of the subband data channel directly as the PMI of the subband control channel.

As previously mentioned, base station carries out the configuration of corresponding transmission mode based on the CSI that terminal is fed back, mould is transmitted in configuration When formula, it is thus necessary to determine that the precoding vector of the pre-coding matrix of subband data channel and the subband control channel.

Wherein, in the precoding vector for determining control channel, (show that data channel is prelisted using single stream as RI=1 Code mode transmits data), PMI of the data channel PMI as the control channel of corresponding subband can be directly used in base station side；When RI >=2 (show data channel using multithread precoding mode transmit data) when, indicated using PMI and the first information described The precoding vector of the pre-coding matrix of subband data channel and the subband control channel.

Here, when practical application, fixation position indicated by the PMI for selecting data channel in multithread code word or with Precoding vector of the vector that seat in the plane is set as control channel, that is, the PMI parsed be the sub-band number it is believed that When the PMI in road and the first information are empty, the pre-coding matrix of the subband data channel can be determined in the following manner With the precoding vector of the subband control channel:

The pre-coding matrix of the subband data channel is determined using the PMI of the subband data channel；And by the son The vector of fixation position or random site in the corresponding pre-coding matrix of PMI with data channel is controlled as the subband The precoding vector of channel.

Feedback divisor number can also be needed it is believed that additional information bit outside the PMI in road, in indication feedback multilayer code word Precoding vector of the precoding vector as control channel, i.e., as the PMI that the PMI is the subband data channel And the first information determines the precoding of the subband data channel using the PMI of the subband data channel when not being sky Matrix；And the precoding vector of the subband control channel is determined using the first information.

Since there are two types of the modes of feedback PMI and the first information, that is to say, that base station can pass through above two mode One of mode determine the pre-coding matrix of the subband data channel and the precoding vector of the subband control channel, So, when terminal supports the mode of two kinds of feedbacks, which base station can use by high-level signaling configurating terminal when practical application Kind mode feeds back PMI and the first information.

Based on this, in some embodiments, before the CSI of the subband for receiving terminal feedback, that is, step is being executed Before 401, this method can also include:

Wherein, by the first information determine the precoding vector of the subband control channel in the way of when, base station can To be independently determined the precoding vector of the subband control channel using the first information；Or utilize the first information And the PMI joint of the subband data channel determines the precoding vector of the subband control channel.

Here, when practical application, base station and terminal can be to arrange specifically using which kind of side in a manner of above two in advance Formula realizes the instruction of the precoding vector of the subband control channel.So base station can be based on the indicating mode benefit of agreement The precoding vector of the subband control channel is determined with the first information.

Wherein, in some embodiments, when the PMI joint instructions institute of the first information and the subband data channel When stating the precoding vector of subband control channel, the base station utilizes the PMI using the subband data channel, determines one Code word in code book；

The precoding vector of specific position in the code word that the base station indicates the first information, as described The precoding vector of subband control channel.

The embodiment of the invention also provides a kind of processing methods based on PMI, as shown in figure 5, this method includes；

Step 501: terminal carries out channel measurement to subband and to base station feedback CSI；

Step 502: the base station receives the CSI of the subband of terminal feedback；

Step 503: the base station parses the CSI, the PMI and the first information fed back；

Step 504: the base station determines the pre- of the subband data channel using the PMI and the first information of the feedback The precoding vector of encoder matrix and the subband control channel.

It should be understood that terminal and the concrete processing procedure of base station are as detailed above, which is not described herein again.

Processing method provided in an embodiment of the present invention based on PMI, when data channel is transmitted using multithread precoding mode When, when feeding back CSI, PMI and the first information have been fed back, has indicated the subband data channel with the PMI and the first information of feedback Pre-coding matrix and the subband control channel precoding vector, realize the feedback of control channel PMI, so, it is possible Support and control channel list stream precoding transmissions mode promotes control so as to effectively promote the covering performance of down control channel The reliability of information transmission processed.

The solution of the present invention is described in detail again below with reference to Application Example.

Application Example one

The application scenarios of this application embodiment are: base station side has 4 antenna ports, and code book is as shown in Figure 3.In one cell, Multiple terminals (including terminal 1, terminal 2 and terminal 3) are configured to closed loop transmission mode.

In this application embodiment, fixed first vector selected in feedback code of base station side is as control channel Precoding vector.

Base station determines that the step of precoding vector of the control channel of each terminal includes:

Firstly, each terminal is to base station feedback CSI；

Specifically, terminal 1 carries out channel measurement to the corresponding subband of its control channel, and feeds back CSI；

Wherein, in the CSI of feedback, RI=1, PMI 4 bits of occupancy, specially 0001, the code book in conjunction with shown in Fig. 3, The corresponding single layer code word of PMI is W₁ ^{1}=[1-j 1j].

Terminal 2 carries out channel measurement to the corresponding subband of its control channel, and feeds back CSI；

Wherein, in the CSI of feedback, RI=2, PMI 4 bits of occupancy, specially 1000, the code book in conjunction with shown in Fig. 3, The corresponding double-deck code word of PMI is

Terminal 3 carries out channel measurement to the corresponding subband of its control channel, and feeds back CSI；

Wherein, in the CSI of feedback, RI=3, PMI 4 bits of occupancy, specially 1100, the code book in conjunction with shown in Fig. 3, The corresponding double-deck code word of PMI is

Secondly, determining the precoding vector of each control channel after base station side receives the CSI that each terminal is fed back.

Specifically, for terminal 1, base station directlys adopt W₁ ^{1}Precoding vector as control channel.

For terminal 2, due to W₈ ^{1}For W₈ ^{1,2}First precoding vector in code word, so using W₈ ^{1}As control The precoding vector of channel processed.

For terminal 3, due toForFirst precoding vector in code word, so usingAs control The precoding vector of channel processed.

Application Example two

In this application embodiment, base station side selects a vector in feedback code as the pre- of control channel at random Coding vector.

Firstly, each terminal is to base station feedback CSI；

Wherein, in the CSI of feedback, RI=1, PMI 4 bits of occupancy, specially 0001, the code book in conjunction with shown in Fig. 3, The corresponding single layer code word of PMI is W₁ ^{1}=[1-j, 1 j].

For terminal 2, base station is that terminal 2 uses W at random₈ ^{2}Precoding vector as control channel.

For terminal 3, base station is that terminal 3 uses at randomPrecoding vector as control channel.

Wherein, W₈ ^{2}ForSecond vector in code word,ForThird vector in code word.

Application Example three

In this application embodiment, base station is that terminal configuration needs to use additional information bit anti-by high-level signaling Precoding vector of the vector in code word as control channel is presented, i.e. the first information is not empty.

Firstly, each terminal is to base station feedback CSI；

Wherein, in the CSI of feedback, RI=2, PMI 4 bits of occupancy, specially 1000, the code book in conjunction with shown in Fig. 3, The corresponding double-deck code word of PMI isMeanwhile for control channel list stream pre-coding scheme, in the code word first A vector, that is, W₈ ^{1}Best performance, so the instruction of high-level signaling based on the received, needs additional 1 bit indication, it is specific to design It is 0, i.e., terminal 2 is 10000 for the bit information of PMI feedback.

Wherein, in the CSI of feedback, RI=3, PMI 4 bits of occupancy, specially 1100, the code book in conjunction with shown in Fig. 3, The corresponding double-deck code word of PMI isMeanwhile for control channel list stream pre-coding scheme, in the code word second A vector isBest performance, so the instruction of high-level signaling based on the received, needs additional 2 bit indication, it is specific to design It is 01, i.e., terminal 3 is 110001 for the bit information of PMI feedback.

For terminal 2, base station determines control according to the bit information fed back for PMI, i.e., last 1 bit of 10000 determination The precoding vector of channel processed isFirst vector in code word, i.e. W₈ ^{1}。

For terminal 3, base station is determined according to the bit information fed back for PMI, i.e., last 2 bit of 110001 determination The precoding vector of control channel isSecond vector in code word, i.e.,

Wherein, W₈ ^{1}For W₈ ^{1,2}First precoding vector in code word,ForSecond in code word to Amount.

From the scheme that the scheme of Application Example can be seen that the embodiment of the present invention:

If 1, certain subband corresponding part or whole control channel bandwidth, data channel and control for the subband are believed Road carries out unified PMI feedback；

2, in the CSI fed back, as RI=1, data channel PMI is can be directly used as corresponding subband in base station side The PMI of control channel.

In the CSI of feedback, work as RI >=2, and without additional bit feed back instruction control channel precoding vector when, can Select a vector based on the fixation position or random site in multithread code word as the precoding vector of control；Alternatively, working as RI >=2, and when having the precoding vector of additional bit feedback instruction control channel, a vector in indication feedback code word is made For control precoding vector instruction.

Where it is assumed that feedback additional bit number is n, RI size is r, it is desirable that: 2ⁿ≥r。

3, base station can indicate whether the feedback model of present terminal needs additional bit by way of high-level signaling.

The method of embodiment to realize the present invention, the embodiment of the invention provides a kind of processing units based on PMI, if It sets in terminal, as shown in fig. 6, described device includes:

Measurement module 61, for carrying out channel measurement to subband；

Feedback module 62 is used for base station feedback CSI；Wherein,

It should be understood that when data channel list stream precoding mode transmits data, what the feedback module 62 was fed back PMI is the PMI of the data channel, that is to say, that base station uses the PMI of data channel directly as the PMI of control channel.

Here, when practical application, it may not be necessary to except the additional bit of the PMI of data channel, select data channel Precoding vector of one vector of fixation position or random site in multithread code word indicated by PMI as control channel. Feedback divisor number can also be needed it is believed that additional information bit outside the PMI in road, pre- with one in indication feedback multilayer code word It is pre- can effectively to support that data channel and control channel are unified in this way for precoding vector of the coding vector as control channel Code Design, so as to reduce signaling process and number of feedback bits.

Based on this, in some embodiments, the feedback module 62 is specifically used for one of in the following manner feedback PMI And the first information:

Based on this, in some embodiments, which can also include: reception and resolution unit, be used for:

Receive RRC signaling or system information that base station is sent；

Correspondingly, the feedback unit 62 feeds back PMI and the first information according to obtained mode.

It should be understood that it is provided by the above embodiment based on the processing unit of PMI when carrying out PMI processing, only more than The division progress of each program module is stated for example, can according to need in practical application and distribute above-mentioned processing by difference Program module complete, i.e., the internal structure of device is divided into different program modules, with complete it is described above whole or Person part is handled.

When practical application, measurement module 61, feedback module 62, reception and parsing module can be by the processing units based on PMI In processor combination communication interface realize.

The method of embodiment to realize the present invention, the embodiment of the invention also provides a kind of processing unit based on PMI, It is arranged in base station, as shown in fig. 7, described device includes:

Receiving unit 71, the CSI of the subband for receiving terminal feedback；The bandwidth corresponding part or whole of the subband Control channel bandwidth；

Resolution unit 72 obtains PMI and the first information for parsing the CSI；

Determination unit 73, for determining the pre-coding matrix of the subband data channel using the PMI and the first information With the precoding vector of the subband control channel；The subband data channel transmits data using multithread precoding mode.

Here, described when the subband data channel transmits data using single stream precoding mode when practical application Determination unit 73 is by the PMI of the subband data channel directly as the PMI of the subband control channel.

Here, when practical application, fixation position indicated by the PMI for selecting data channel in multithread code word or with Precoding vector of the vector that seat in the plane is set as control channel, that is, the PMI parsed be the sub-band number it is believed that When the PMI in road and the first information are empty, the determination unit 73 is specifically used for:

Feedback divisor number can also be needed it is believed that additional information bit outside the PMI in road, in indication feedback multilayer code word Precoding vector of the precoding vector as control channel, be based on this, in some embodiments, the determination unit 73, it is specifically used for:

Based on this, in some embodiments, which can also include:

Indicating unit, before the CSI of the subband for receiving terminal feedback, by RRC signaling or system information by PMI The terminal is indicated to the feedback system of the first information.

Wherein, by the first information determine the precoding vector of the subband control channel in the way of when, it is described really Order member 73 can use the precoding vector that the first information is independently determined the subband control channel；Or it is described true Order member 73 is combined using the PMI of the first information and the subband data channel determines the pre- of the subband control channel Coding vector.

Wherein, in some embodiments, when the PMI joint instructions institute of the first information and the subband data channel When stating the precoding vector of subband control channel, the determination unit 73 is using the PMI using the subband data channel, really Code word in a fixed code book；

The precoding vector of specific position in the code word that the determination unit 73 indicates the first information is made For the precoding vector of the subband control channel.

When practical application, receiving unit 71 and indicating unit can be combined by the processor in the processing unit based on PMI and be led to Believe that interface is realized；The resolution unit 72 and determination unit 73 can be realized by the processor in the processing unit based on PMI.

Hardware realization based on above-mentioned apparatus, the embodiment of the invention also provides a kind of terminals, as shown in figure 8, the terminal 80 include:

First communication interface 81 can carry out information exchange with base station；

First processor 82 is connect with first communication interface, information exchange is carried out with base station to realize, for transporting When row computer program, the method that above-mentioned terminal side one or more technical solution provides is executed.

Specifically, the first processor 82, for carrying out channel measurement to subband；

First communication interface 81 is used for base station feedback CSI；Wherein,

Wherein, in one embodiment, it includes following that first communication interface 81, which feeds back PMI and the mode of the first information, One of:

In one embodiment, first communication interface 81 is also used to receive the radio resource control RRC of base station transmission Signaling or system information；

The first processor 82, is also used to parse the RRC signaling or system information, obtains PMI and the first information Feedback system；

Correspondingly, first communication interface 81 feeds back PMI and the first information according to obtained mode.

Certainly, when practical application, as shown in figure 8, the terminal can also include:

First memory 83, the computer program are stored on the first memory 83；

User interface 84.

Wherein, the various components in terminal 80 are coupled by bus system 85.It is understood that bus system 85 is used Connection communication between these components of realization.Bus system 85 further includes power bus, control in addition to including data/address bus Bus and status signal bus in addition processed.But for the sake of clear explanation, various buses are all designated as bus system 85 in Fig. 8.

Wherein, user interface 84 may include display, keyboard, mouse, trace ball, click wheel, key, button, sense of touch Plate or touch screen etc..

First memory 83 in the embodiment of the present invention is for storing various types of data to support the behaviour of terminal 80 Make.

The terminal side method that the embodiments of the present invention disclose can be applied in first processor 82, or by first Processor 82 is realized.First processor 82 may be a kind of IC chip, the processing capacity with signal.It was realizing Each step of Cheng Zhong, the above method can pass through the integrated logic circuit or software form of the hardware in first processor 82 Instruction complete.Above-mentioned first processor 82 can be general processor, digital signal processor (DSP, Digital Signal Processor) either other programmable logic device, discrete gate or transistor logic, discrete hardware group Part etc..First processor 82 may be implemented or execute disclosed each method, step and logical box in the embodiment of the present invention Figure.General processor can be microprocessor or any conventional processor etc..The side in conjunction with disclosed in the embodiment of the present invention The step of method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware and software in decoding processor Block combiner executes completion.Software module can be located in storage medium, which is located at first memory 83, and first The step of processor 82 reads the information in first memory 83, completes preceding method in conjunction with its hardware.

In the exemplary embodiment, terminal 80 can by one or more application specific integrated circuit (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), Complex Programmable Logic Devices (CPLD, Complex Programmable Logic Device), scene Programmable gate array (FPGA, Field-Programmable Gate Array), general processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor) or other electronic components are realized, are used for Execute preceding method.

Hardware realization based on above-mentioned apparatus, the embodiment of the invention also provides a kind of base stations, as shown in figure 9, the base station 90 include:

Second communication interface 91 can carry out information exchange with base station；

Second processor 92 is connect with first communication interface, information exchange is carried out with base station to realize, for transporting When row computer program, the method that above-mentioned terminal side one or more technical solution provides is executed.

Specifically, second communication interface 91, the CSI of the subband for receiving terminal feedback；The bandwidth of the subband Corresponding part or whole control channel bandwidth；

The second processor 92 obtains PMI and the first information for parsing the CSI；Utilize the PMI and first Information determines the pre-coding matrix of the subband data channel and the precoding vector of the subband control channel；The subband Data channel transmits data using multithread precoding mode.

In one embodiment, the second processor 92 is specifically used for executing one of following operation:

One of in one embodiment, the second processor 92, for performing the following operations:

In one embodiment, the second processor 92, is specifically used for:

In one embodiment, second communication interface 91, be also used to receive terminal feedback subband CSI before, lead to It crosses RRC signaling or system information and the feedback system of PMI and the first information is indicated to the terminal.

In one embodiment, the second processor 92, is also used to: when the subband data channel is prelisted using single stream When code mode transmits data, by the PMI of the subband data channel directly as the PMI of the subband control channel.

Certainly, when practical application, as shown in figure 9, the terminal can also include:

Second memory 93, the computer program are stored on the second memory 93.

Wherein, the various components in base station 90 are coupled by bus system 94.It is understood that bus system 94 is used Connection communication between these components of realization.Bus system 94 further includes power bus, control in addition to including data/address bus Bus and status signal bus in addition processed.But for the sake of clear explanation, various buses are all designated as bus system 94 in Fig. 9.

Second memory 93 in the embodiment of the present invention is for storing various types of data to support the behaviour of base station 90 Make.

The method that the embodiments of the present invention disclose can be applied in second processor 92, or by second processor 92 realize.Second processor 92 may be a kind of IC chip, the processing capacity with signal.During realization, on Each step for stating method can be complete by the integrated logic circuit of the hardware in second processor 92 or the instruction of software form At.Above-mentioned second processor 92 can be general processor, DSP or other programmable logic device, discrete gate or Transistor logic, discrete hardware components etc..Second processor 92 may be implemented or execute the public affairs in the embodiment of the present invention Each method, step and the logic diagram opened.General processor can be microprocessor or any conventional processor etc..Knot The step of closing method disclosed in the embodiment of the present invention, can be embodied directly in hardware decoding processor and execute completion, Huo Zheyong Hardware and software module combination in decoding processor execute completion.Software module can be located in storage medium, the storage Medium is located at second memory 93, and second processor 92 reads the information in second memory 93, completes in conjunction with its hardware aforementioned The step of method.

In the exemplary embodiment, base station 90 can be by one or more ASIC, DSP, PLD, CPLD, FPGA, general place It manages device, controller, MCU, Microprocessor or other electronic components to realize, for executing preceding method.

It is appreciated that the memory (such as first memory 83 and second memory 93) in the embodiment of the present invention, it can be with It is volatile memory or nonvolatile memory, may also comprise both volatile and non-volatile memories.Wherein, non-easy Lose property memory can be read-only memory (ROM, Read Only Memory), programmable read only memory (PROM, Programmable Read-Only Memory), Erasable Programmable Read Only Memory EPROM (EPROM, Erasable Programmable Read-Only Memory), electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic RAM (FRAM, ferromagnetic Random access memory), flash memory (Flash Memory), magnetic surface storage, CD or CD-ROM (CD-ROM, Compact Disc Read-Only Memory)；Magnetic surface storage can be magnetic disk storage or tape is deposited Reservoir.Volatile memory can be random access memory (RAM, Random Access Memory), be used as outside Cache.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random access memory (SRAM, Static Random Access Memory), synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), dynamic random access memory (DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), double data speed synchronous dynamic RAM (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), synchronized links dynamic random Access memory (SLDRAM, SyncLink Dynamic Random Access Memory), direct rambus arbitrary access Memory (DRRAM, Direct Rambus Random Access Memory).The memory of description of the embodiment of the present invention is intended to The including but not limited to memory of these and any other suitable type.

In exemplary embodiment, the embodiment of the invention also provides a kind of computer readable storage medium, for example including depositing The first memory 83 of computer program is stored up, the computer program being stored on first memory 83 can be by the first of terminal 80 Processor 82 executes, to complete step described in the method for aforementioned terminals side；It can also include the second storage of storage computer program Device 93, the computer program being stored on second memory 93 can be executed by the second processor 92 of base station 90, aforementioned to complete Step described in base station side method.

It should be understood that computer readable storage medium provided in an embodiment of the present invention can be FRAM, ROM, The memories such as PROM, EPROM, EEPROM, Flash Memory, magnetic surface storage, CD or CD-ROM；It is also possible to wrap Include the various equipment of one of above-mentioned memory or any combination.

The method of embodiment to realize the present invention, the embodiment of the invention also provides a kind of processing system based on PMI, As shown in Figure 10, which includes:

Terminal 101, for carrying out channel measurement to subband and feeding back CSI to base station 102；Wherein, when feeding back CSI, when When the bandwidth corresponding part of the subband or whole control channel bandwidth, the PMI and the first information of feedback indicate the sub-band number It is believed that the precoding vector of the pre-coding matrix in road and the subband control channel；The data channel uses multithread precoding Mode transmits data；

Base station 102, the CSI of the subband for receiving terminal feedback 101；The CSI is parsed, the PMI fed back and One information；And the pre-coding matrix of the subband data channel and described is determined using the PMI and the first information of the feedback The precoding vector of subband control channel.

It should be understood that terminal 101 and the concrete processing procedure of base station 102 are as detailed above, it is no longer superfluous here It states.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.

Claims

1. a kind of processing method based on pre-coding matrix instruction PMI, which is characterized in that the described method includes:

Channel measurement is carried out to subband and to base station feedback channel state information CSI；Wherein,

When feeding back CSI, when the bandwidth corresponding part of the subband or whole control channel bandwidth, the PMI of feedback and first Information indicates the pre-coding matrix of the subband data channel and the precoding vector of the subband control channel；The data letter Road data are transmitted using multithread precoding mode.

2. the method according to claim 1, wherein the mode of feedback PMI and the first information includes following one:

The PMI of the subband data channel is fed back, the feedback first information is sky；The PMI of the subband data channel indicates subband The pre-coding matrix of data channel；And the vector of the fixation position in the pre-coding matrix or the vector of random site are for supplying Base station determines the precoding vector of the subband control channel；

The PMI of the subband data channel is fed back, and feeding back the first information is not sky, the first information is used to determine for base station The precoding vector of the subband control channel.

3. according to the method described in claim 2, it is characterized in that, the method also includes:

Receive radio resource control RRC signaling or system information that base station is sent；

4. according to the method described in claim 2, it is characterized in that, feed back the PMI of the subband data channel, and feeding back first When information is not sky, meet one of following characteristics:

The precoding vector of subband control channel described in the PMI joint instructions of the first information and the subband data channel.

5. according to the method described in claim 4, it is characterized in that, the PMI of the first information and the subband data channel Described in joint instructions when the precoding vector of subband control channel, the PMI of the subband data channel is indicated in a code book Code word；The first information indicates the precoding vector of specific position in the code word.

6. a kind of processing method based on PMI, which is characterized in that the described method includes:

The CSI is parsed, PMI and the first information are obtained；The subband data channel is determined using the PMI and the first information The precoding vector of pre-coding matrix and the subband control channel；The subband data channel is passed using multithread precoding mode Transmission of data.

7. according to the method described in claim 6, it is characterized in that, determining the sub-band number using the PMI and the first information It is believed that the mode of the pre-coding matrix in road and the precoding vector of the subband control channel includes following one:

When the PMI and the first information that the PMI is the subband data channel are sky, the subband data channel is utilized PMI determine the pre-coding matrix of the subband data channel；And by the corresponding precoding square of the PMI of the subband data channel Precoding vector of the vector of fixation position or random site in battle array as the subband control channel；

When the PMI and the first information that the PMI is the subband data channel are not sky, using the sub-band number it is believed that The PMI in road determines the pre-coding matrix of the subband data channel；And the subband control letter is determined using the first information The precoding vector in road.

8. the method according to the description of claim 7 is characterized in that described determine that the subband controls using the first information The mode of the precoding vector of channel includes one of following manner:

Combined using the PMI of the first information and the subband data channel determine the precoding of the subband control channel to Amount.

9. according to the method described in claim 8, it is characterized in that, it is described using the first information and the sub-band number it is believed that The PMI joint in road determines the precoding vector of the subband control channel, comprising:

The precoding vector of specific position in the code word that the first information is indicated, as the subband control channel Precoding vector.

10. the method according to the description of claim 7 is characterized in that it is described receive terminal feedback subband CSI before, institute State method further include:

11. according to the described in any item methods of claim 6 to 10, which is characterized in that the method also includes:

It is when the subband data channel transmits data using single stream precoding mode, the PMI of the subband data channel is straight Meet the PMI as the subband control channel.

12. a kind of processing unit based on PMI, which is characterized in that described device includes:

Measurement module, for carrying out channel measurement to subband；

Feedback module is used for base station feedback CSI；Wherein,

13. a kind of processing unit based on PMI, which is characterized in that described device includes:

Receiving unit, the CSI of the subband for receiving terminal feedback；The bandwidth corresponding part of the subband or whole control channels Bandwidth；

Resolution unit obtains PMI and the first information for parsing the CSI；

Determination unit, for determining the pre-coding matrix of the subband data channel and described using the PMI and the first information The precoding vector of subband control channel；The subband data channel transmits data using multithread precoding mode.

14. a kind of terminal, which is characterized in that the terminal includes:

First processor, for carrying out channel measurement to subband；

First communication interface is used for base station feedback CSI；Wherein,

15. terminal according to claim 14, which is characterized in that the first communication interface feedback PMI and the first information Mode include following one:

16. terminal according to claim 15, which is characterized in that

First communication interface is also used to receive the radio resource control RRC signaling or system information of base station transmission；

The first processor is also used to parse the RRC signaling or system information, obtains the feedback side of PMI and the first information Formula；

17. a kind of base station, which is characterized in that the base station includes:

Second communication interface, the CSI of the subband for receiving terminal feedback；The bandwidth corresponding part of the subband or all control Channel width；

Second processor obtains PMI and the first information for parsing the CSI；Institute is determined using the PMI and the first information State the pre-coding matrix of subband data channel and the precoding vector of the subband control channel；The subband data channel uses Multithread precoding mode transmits data.

18. base station according to claim 17, which is characterized in that the second processor is specifically used for executing following behaviour One of make:

19. base station according to claim 18, which is characterized in that the second processor, for performing the following operations it One:

20. base station according to claim 19, which is characterized in that the second processor is specifically used for:

21. base station according to claim 18, which is characterized in that second communication interface is also used to receive terminal anti- Before the CSI of the subband of feedback, the feedback system of PMI and the first information are indicated to by the end by RRC signaling or system information End.

22. 7 to 21 described in any item base stations according to claim 1, which is characterized in that the second processor is also used to:

23. a kind of terminal, which is characterized in that the terminal includes: first processor, first memory and is stored in described first On memory and the computer program that can be run on the first processor；

Wherein, the first processor is for when running the computer program, perform claim to require any one of 1 to 5 side The step of method.

24. a kind of base station characterized by comprising second processor, second memory and be stored on the second memory And the computer program that can be run in the second processor；

Wherein, the second processor is for when running the computer program, perform claim to require any one of 6 to 11 sides The step of method.

25. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The step of any one of claim 1 to 5 the method is realized when being executed by processor, or realize that claim 6 to 11 is any The step of item the method.