CN104009785A - Codebook feedback method, user equipment and base station - Google Patents

Codebook feedback method, user equipment and base station Download PDF

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Publication number
CN104009785A
CN104009785A CN201310058909.8A CN201310058909A CN104009785A CN 104009785 A CN104009785 A CN 104009785A CN 201310058909 A CN201310058909 A CN 201310058909A CN 104009785 A CN104009785 A CN 104009785A
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parameter
code book
book index
antenna
coding matrix
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CN104009785B (en
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高毓恺
黎超
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The embodiment of the invention provides a codebook feedback method, user equipment and a base station. The codebook feedback method comprises the following steps: a reference signal sent through an antenna array by the base station is measured; according to the measuring result, a precoding matrix is selected from a codebook; multiple codebook indexes corresponding to the precoding matrix are determined; and a precoding matrix indicator PMI corresponding to two of the multiple codebook indexes is determined, and the PMI is sent to the base station such that the base station sends the precoding matrix of data according to the PMI selection. According to the embodiment of the invention, the user equipment sends the PMI corresponding to the multiple codebook indexes to the base station, and the multiple codebook indexes are corresponding to a first parameter in a first antenna direction and a second parameter in a second antenna direction. The base station can utilize the first parameter and the second parameter to form spatial three-dimensional beams in the horizontal and vertical directions. Thus, system performance can be raised.

Description

Code book feedback method, subscriber equipment and base station
Technical field
The embodiment of the present invention relates to wireless communication technology field, and more specifically, relates to code book feedback method, subscriber equipment and base station.
Background technology
Along with the continuous growth of wireless data service demand, the requirement of performance in wireless communication systems is also more and more higher.By the technology that adopts the active antenna system (Active Antenna System, AAS) of bidimensional antenna array structure to improve systematic function, receive much concern.In AAS technology, each antenna element has communication unit and power control unit alone, can independent control signal amplitude and phase place.Like this, bidimensional aerial array can dynamically be controlled wave beam at the first antenna direction and two dimensions of the second antenna direction.This aerial array consists of a plurality of antennas, forms a two-dimentional plane, has a plurality of row and a plurality of row.
In existing feedback mechanism, only fed back the first antenna direction (as the row or column of aerial array) and polarised direction phase difference, the AAS of bidimensional antenna array structure also comprises the phase difference of the second antenna direction (as the column or row of aerial array).The base station only phase difference based on the first antenna direction and polarised direction produces wave beam, and intelligence is carried out wave beam control two dimensions, has limited the raising of systematic function.
Summary of the invention
The embodiment of the present invention provides code book feedback method, subscriber equipment and base station, can pass through the space three-dimensional wave beam of horizontal and vertical direction, improves systematic function.
First aspect, the embodiment of the present invention provides a kind of code book feedback method, comprising: measure the reference signal that base station sends by aerial array, obtain measurement result; According to select the pre-coding matrix corresponding to this measurement result from code book; Determine a plurality of code book indexes corresponding to this pre-coding matrix, wherein the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of this aerial array and the second antenna direction of this aerial array, this first parameter and this second parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row or column that this first antenna direction is this planar antenna array, the column or row that this second antenna direction is this planar antenna array; Determine the pre-coding matrix indication PMI corresponding to the plurality of code book index, to this base station, send this PMI, so that this base station is selected for sending the pre-coding matrix of data according to this PMI.
In conjunction with first aspect, in the possible implementation of the first, determine a plurality of code book indexes corresponding to this pre-coding matrix, comprising: according to this first parameter or according to this first parameter and this second parameter, determine the first code book index in the plurality of code book index; According to this second parameter or according to this first parameter and this second parameter, determine the second code book index in the plurality of code book index.
In conjunction with first aspect, in the possible implementation of the second, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of this aerial array, and wherein this first parameter, this second parameter and the 3rd parameter are used for forming this pre-coding matrix.
In conjunction with the possible implementation of the second, in the third possible implementation, a plurality of code book indexes that this is determined corresponding to this pre-coding matrix, comprising: according to this first parameter, determine this index of third yard in the plurality of code book index; According to this second parameter, determine the 4th code book index in the plurality of code book index; According to the 3rd parameter, determine the 5th code book index in the plurality of code book index.
In conjunction with the possible implementation of the second, in the 4th kind of possible implementation, a plurality of code book indexes that this is determined corresponding to this pre-coding matrix, comprising: according to this first parameter and/or this second parameter, determine the 6th code book index in the plurality of code book index; According to the 3rd parameter, and determine the 7th code book index in the plurality of code book index according to this first parameter and/or this second parameter.
In conjunction with the possible implementation of the second, in the 5th kind of possible implementation, a plurality of code book indexes that this is determined corresponding to this pre-coding matrix, comprising: according to this first parameter, determine the 8th code book index in the plurality of code book index; According to this first parameter, or determine the 9th code book index in the plurality of code book index according to this first parameter and the 3rd parameter; According to this second parameter, determine the tenth code book index in the plurality of code book index.
In conjunction with first aspect or above-mentioned any the possible implementation of first aspect, in the 6th kind of possible implementation, before the reference signal sending by aerial array in this measurement base station, the method also comprises: receive the antenna configuration information that this base station sends by this aerial array; The reference signal that this measurement base station sends by aerial array comprises: based on this antenna configuration information, measure this reference signal that this base station sends by this aerial array; This basis is selected the pre-coding matrix corresponding to measurement result from code book, comprising: according to this measurement result and this antenna configuration information, select this pre-coding matrix from this code book.
In conjunction with the 6th kind of possible implementation, in the 7th kind of possible implementation, this antenna configuration information, is carried by Master Information Block MIB or system information block SIB or descending control message DCI or radio resource control RRC signaling.
In conjunction with the 6th kind of possible implementation or the 7th kind of possible implementation, in the 8th kind of possible implementation, this antenna configuration information, comprises antenna port configuration structure information and/or antenna port information of number on this first antenna direction and this second antenna direction.
Second aspect, the embodiment of the present invention provides a kind of code book feedback method, comprising: receive the pre-coding matrix indication PMI that subscriber equipment sends; Determine a plurality of code book indexes corresponding to this PMI, the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of aerial array and the second antenna direction of this aerial array, this aerial array is planar array antenna, this first parameter and this second parameter are used for forming pre-coding matrix, the row or column that this first antenna direction is this planar antenna array, the column or row that this second antenna direction is this planar antenna array; Determine this pre-coding matrix corresponding with the plurality of code book index, according to this pre-coding matrix, data are carried out to precoding processing, by this aerial array, to this subscriber equipment, send the data of carrying out precoding processing.
In conjunction with second aspect, in the possible implementation of the first, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of this aerial array, and wherein this first parameter, this second parameter and the 3rd parameter are used for forming this pre-coding matrix.
In conjunction with second aspect or the possible implementation of the first, in the possible implementation of the second, before receiving the encoder matrix indication PMI of subscriber equipment transmission, the method also comprises: to this subscriber equipment transmitting antenna configuration information, so that this subscriber equipment based on this antenna configuration information measuring reference signals, is selected pre-coding matrix and is determined this PMI from code book.
In conjunction with the possible implementation of the second, in the third possible implementation, this antenna configuration information, is carried by Master Information Block MIB or system information block SIB or descending control message DCI or radio resource control RRC signaling.
In conjunction with the possible implementation of the second or the third possible implementation, in the 4th kind of possible implementation, this antenna configuration information, comprises antenna port configuration structure information and/or antenna port information of number on this first antenna direction and this second antenna direction.
The third aspect, the embodiment of the present invention provides a kind of subscriber equipment, comprising: receiving element, the reference signal sending by aerial array for receiving base station; Control unit, for measuring this reference signal, obtains measurement result; This control unit, also selects the pre-coding matrix corresponding to measurement result for basis from code book; This control unit, also for determining a plurality of code book indexes corresponding to this pre-coding matrix, wherein the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of this aerial array and the second antenna direction of this aerial array, this first parameter and this second parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row that this first antenna direction is this planar antenna array, the row that this second antenna direction is this planar antenna array; This control unit, also for determining the pre-coding matrix indication PMI corresponding to the plurality of code book index; Transmitting element, for sending this PMI to this base station, so that this base station is selected for sending the pre-coding matrix of data according to this PMI.
In conjunction with the third aspect, in the possible implementation of the first, this control unit, specifically for according to this first parameter or according to this first parameter and this second parameter, determines the first code book index in the plurality of code book index; This control unit, specifically for according to this second parameter or according to this first parameter and this second parameter, determines the second code book index in the plurality of code book index.
In conjunction with the possible implementation of the first, in the possible implementation of the second, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of this aerial array, and wherein this first parameter, this second parameter and the 3rd parameter are used for forming this pre-coding matrix.
In conjunction with the possible implementation of the second, in the third possible implementation, this control unit, specifically for determining this index of third yard in the plurality of code book index according to this first parameter; This control unit, specifically for determining the 4th code book index in the plurality of code book index according to this second parameter; This control unit, specifically for determining the 5th code book index in the plurality of code book index according to the 3rd parameter.
In conjunction with the possible implementation of the second, in the 4th kind of possible implementation, this control unit, specifically for determining the 6th code book index in the plurality of code book index according to this first parameter and/or this second parameter; This control unit, specifically for according to the 3rd parameter, and determines the 7th code book index in the plurality of code book index according to this first parameter and/or this second parameter.
In conjunction with the possible implementation of the second, in the 5th kind of possible implementation, this control unit, specifically for determining the 8th code book index in the plurality of code book index according to this first parameter; This control unit, specifically for according to this first parameter, or determines the 9th code book index in the plurality of code book index according to this first parameter and the 3rd parameter; This control unit, specifically for determining the tenth code book index in the plurality of code book index according to this second parameter.
In conjunction with the third aspect or above-mentioned any the possible implementation of the third aspect, in the 6th kind of possible implementation, this receiving element, the antenna configuration information also sending by this aerial array for the base station that receives this; This control unit, specifically for based on this antenna configuration information, measures this reference signal that this base station sends by this aerial array; This control unit specifically for according to this measurement result and this antenna configuration information, is selected this pre-coding matrix from this code book.
In conjunction with the 6th kind of possible implementation, in the 7th kind of possible implementation, this antenna configuration information, is carried by Master Information Block MIB or system information block SIB or descending control message DCI or radio resource control RRC signaling.
In conjunction with the 6th kind of possible implementation or the 7th kind of possible implementation, in the 8th kind of possible implementation, this antenna configuration information, comprises antenna port configuration structure information and/or antenna port information of number on this first antenna direction and this second antenna direction.
Fourth aspect, the embodiment of the present invention provides a kind of base station, comprising: receiving element, the pre-coding matrix indication PMI sending for receiving subscriber equipment; Control unit, for determining a plurality of code book indexes corresponding to this PMI, the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of aerial array and the second antenna direction of this aerial array, this aerial array is planar array antenna, this first parameter and this second parameter are used for forming pre-coding matrix, the row that this first antenna direction is this planar antenna array, the row that this second antenna direction is this planar antenna array; This control unit, also, for determining this pre-coding matrix corresponding with the plurality of code book index, according to this pre-coding matrix, carries out precoding processing to data; Transmitting element, for sending the data of carrying out precoding processing to this subscriber equipment by this aerial array.
In conjunction with fourth aspect, in the possible implementation of the first, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of this aerial array, and wherein this first parameter, this second parameter and the 3rd parameter are used for forming this pre-coding matrix.
In conjunction with fourth aspect or the possible implementation of the first, in the possible implementation of the second, this transmitting element, also for to this subscriber equipment transmitting antenna configuration information, so that this subscriber equipment based on this antenna configuration information measuring reference signals, is selected pre-coding matrix and is determined this PMI from code book.
In conjunction with the possible implementation of the second, in the third possible implementation, this antenna configuration information, is carried by Master Information Block MIB or system information block SIB or descending control message DCI or radio resource control RRC signaling.
In conjunction with the possible implementation of the second or the third possible implementation, in the 4th kind of possible implementation, this antenna configuration information, comprises antenna port configuration structure information and/or antenna port information of number on this first antenna direction and this second antenna direction.
According to embodiments of the invention, subscriber equipment is sending the PMI corresponding to a plurality of code book indexes to base station, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station can utilize the first parameter and the second parameter, forms space three-dimensional wave beam, thereby can improve systematic function in horizontal and vertical direction.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in the embodiment of the present invention be briefly described below, apparently, below described accompanying drawing be 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 according to the indicative flowchart of the code book feedback method of the embodiment of the present invention.
Fig. 2 is according to the indicative flowchart of the code book feedback method of the embodiment of the present invention.
Fig. 3 is according to the indicative flowchart of the code book feedback method of the embodiment of the present invention.
Fig. 4 a is the structural representation of a kind of PMI.
Fig. 4 b is the structural representation of another kind of PMI.
Fig. 4 c is the structural representation of another kind of PMI.
Fig. 4 d is the structural representation of another kind of PMI.
Fig. 4 e is the structural representation of another kind of PMI.
Fig. 4 f is the structural representation of another kind of PMI.
Fig. 5 is according to the structural representation of the subscriber equipment of the embodiment of the present invention.
Fig. 6 is according to the structural representation of the base station of the embodiment of the present invention.
Fig. 7 is according to the structural representation of the subscriber equipment of the embodiment of the present invention.
Fig. 8 is according to the structural representation of the base station of the embodiment of the present invention.
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 a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, should belong to the scope of protection of the invention.
Should understand, the technical scheme of the embodiment of the present invention can be applied to the communication system of various employing AAS, for example: global system for mobile telecommunications (Global System of Mobile communication, be called for short " GSM ") system, code division multiple access (Code Division Multiple Access, be called for short " CDMA ") system, Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, be called for short " WCDMA ") system, GPRS (General Packet Radio Service, be called for short " GPRS "), Long Term Evolution (Long Term Evolution, be called for short " LTE ") system, LTE Frequency Division Duplexing (FDD) (Frequency Division Duplex, be called for short " FDD ") system, LTE time division duplex (Time Division Duplex, be called for short " TDD "), universal mobile telecommunications system (Universal Mobile Telecommunication System, be called for short " UMTS ") etc.
Subscriber equipment (User Equipment, UE) also can be referred to as mobile terminal (Mobile Terminal, MT), mobile subscriber equipment etc., can be through wireless access network (for example, Radio Access Network, RAN) communicate with one or more core net, subscriber equipment can be mobile terminal, as mobile phone (or being called " honeycomb " phone) with there is the computer of mobile terminal, for example, can be portable, pocket, hand-hold type, mobile device built-in computer or vehicle-mounted.
Base station, can be the base station (Base Transceiver Station, BTS) in GSM or CDMA, can be also the base station (NodeB) in WCDMA, can also be eNB or the e-NodeB in LTE,, the present invention does not limit.
Fig. 1 is according to the indicative flowchart of the code book feedback method of the embodiment of the present invention.The method of Fig. 1 is carried out by subscriber equipment.
101, the reference signal that measurement base station sends by aerial array obtains measurement result.
102, from code book, select the pre-coding matrix corresponding to this measurement result.
103, determine a plurality of code book indexes corresponding to this pre-coding matrix, wherein the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of this aerial array and the second antenna direction of this aerial array, this first parameter and this second parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row that this first antenna direction is this planar antenna array, the row that this second antenna direction is this planar antenna array.
104, determine the pre-coding matrix indication (Precoding Matrix Indication, PMI) corresponding to the plurality of code book index, to this base station, send this PMI, so that this base station is selected for sending the pre-coding matrix of data according to this PMI.
According to the method for Fig. 1, subscriber equipment is when sending PMI to base station, and this PMI is corresponding to a plurality of code book indexes, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station can utilize the first parameter and the second parameter, in horizontal and vertical direction, forms space three-dimensional wave beam, improves systematic function.
Fig. 2 is according to the indicative flowchart of the code book feedback method of the embodiment of the present invention.The method of Fig. 2 is carried out by base station.
201, receive the PMI that subscriber equipment sends.
202, determine a plurality of code book indexes corresponding to this PMI, wherein the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of aerial array and the second antenna direction of this aerial array, this first parameter and this second parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row that this first antenna direction is this planar antenna array, the row that this second antenna direction is this planar antenna array.
203, determine the pre-coding matrix corresponding with the plurality of code book index, according to this pre-coding matrix, data are carried out to precoding processing, by described aerial array, to this subscriber equipment, send the data of carrying out precoding processing.
According to the method for Fig. 2, base station receives the PMI corresponding to a plurality of code book indexes that subscriber equipment sends, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station can utilize the first parameter and the second parameter, in horizontal and vertical direction, forms space three-dimensional wave beam, improves systematic function.
Fig. 3 is according to the indicative flowchart of the code book feedback method of the embodiment of the present invention.
301, base station by aerial array to subscriber equipment transmitting antenna configuration information.
Optionally, this antenna configuration information comprises antenna port configuration structure information and/or antenna port information of number on the first antenna direction of this aerial array and the second antenna direction.
Optionally, this antenna configuration information can be carried by following any: Master Information Block (Master Information Block, MIB), system information block (System Information Block, SIB), descending control message (Downlink Control Information, DCI) and Radio Resource control (Radio Resource Control, RRC) signaling.
Particularly, base station can be by one or more these antenna configuration informations of bit notifying user equipment in 10 bits that retain in MIB.Base station can also by this antenna configuration information of this subscriber equipment of existing signaling in MIB, for example, increase cyclic redundancy check (CRC) in MIB (Cyclic Redundancy Check, CRC) mask and notify this antenna configuration information.Base station can also be by implicit this antenna configuration information of notifying of existing signaling in SIB or RRC.Base station can also be by increasing this antenna configuration information of signaling in SIB or RRC.Base station can also increase one or more new DCI forms, and these one or more new DCI forms are corresponding one by one with antenna configuration information, and subscriber equipment in the situation that this new DCI detected, just can be determined the antenna configuration information corresponding with this DCI.
It should be noted that step 301 is optional step.
302, this base station sends reference signal by this aerial array to this subscriber equipment.
303, this subscriber equipment is measured this reference signal.
304, this subscriber equipment, according to this measurement result, is selected the pre-coding matrix corresponding to measurement result from code book.
305, this subscriber equipment is determined a plurality of code book indexes corresponding to this pre-coding matrix.
Optionally, as an embodiment, the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of this aerial array and the second antenna direction of this aerial array, this first parameter and this second parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row or column that this first antenna direction is this planar antenna array, the column or row that this second antenna direction is this planar antenna array.Particularly, a plurality of code book indexes that this is determined corresponding to this pre-coding matrix, comprising: the plurality of code book index comprises the first code book index and the second code book index.According to this first parameter or according to this first parameter and this second parameter, determine the first code book index i in the plurality of code book index 1.According to this second parameter, or determine the second code book index i in the plurality of code book index according to this first parameter and this second parameter 2.
Optionally, as an embodiment, the plurality of code book index corresponding to the first parameter of the first antenna direction of this aerial array, the 3rd parameter of the second parameter of the second antenna direction of this aerial array and the poliarizing antenna direction of this aerial array, this first parameter, this second parameter and the 3rd parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row or column that this first antenna direction is this planar antenna array, the column or row that this second antenna direction is this planar antenna array.Particularly, the plurality of code book index comprises this index of third yard, the 4th code book index or the 5th code book index, or the plurality of code book index comprises the 6th code book index and the 7th code book index, or the plurality of code book index comprises the 8th code book index, the 9th code book index or the tenth code book index.
In the situation that the plurality of code book index comprises this index of third yard, the 4th code book index or the 5th code book index, a plurality of code book indexes that this is determined corresponding to this pre-coding matrix, comprising: according to the first parameter, determine this this index of third yard i 3, according to the second parameter, determine the 4th code book index i 4, according to the 3rd parameter, determine the 5th code book index i 5.
In the situation that the plurality of code book index comprises the 6th code book index and the 7th code book index, a plurality of code book indexes that this is determined corresponding to this pre-coding matrix, comprising: according to the first parameter and/or the second parameter, determine the 6th code book index i 6, according to the 3rd parameter and according to the first parameter and/or the second parameter, determine the 7th code book index i 7.
In the situation that the plurality of code book index comprises the 8th code book index, the 9th code book index or the tenth code book index, a plurality of code book indexes that this is determined corresponding to this pre-coding matrix, comprising: according to the first parameter, determine the 8th code book index i 8; According to the first parameter or according to the first parameter and the 3rd parameter, determine the 9th code book index i 9; According to the second parameter, determine the tenth code book index i 10.
Subscriber equipment is determined the first parameter and the second parameter or is determined the first parameter, the second parameter and the 3rd parameter.Particularly, this first parameter can be the phase difference between the first antenna direction port, and this second parameter can be the phase difference between the second antenna direction port, and the 3rd parameter can be the phase difference between poliarizing antenna direction port.Phase difference resolution rate between the first antenna directional aerial port is 2 π/M 1, wherein, M 1be the phase difference resolution rate parameter between the first antenna directional aerial port, M 1value and the number of antennas on the first antenna direction and antenna distance and the first antenna direction on beam area and resolution-dependent.For example, for 2 antenna ports, during antenna spacing half-wavelength, can choose M 1be 4, or for improving feedback accuracy and pre-coding matrix precision, M 1can be chosen for 16 or 32.For 4 antenna ports, during antenna spacing half-wavelength, can choose M 1be 8, or for improving feedback accuracy and pre-coding matrix precision, M 1can be chosen for 16 or 32.According to definite pre-coding matrix, determine the first parameter m corresponding to this pre-coding matrix 1, this first parameter m wherein 1value be [0, M 1-1] integer in.Similarly, the phase difference resolution rate between the second antenna directional aerial port is 2 π/M 2, wherein, M 2be the phase difference resolution rate parameter between the second antenna directional aerial port, M 2value and the number of antennas on the second antenna direction and antenna distance and the second antenna direction on beam area and resolution-dependent.For example, for 2 antenna ports, during antenna spacing half-wavelength, can choose M 2be 4, or for improving feedback accuracy and pre-coding matrix precision, M 2can be chosen for 16 or 32.For 4 antenna ports, during antenna spacing half-wavelength, can choose M 2be 8, or for improving feedback accuracy and pre-coding matrix precision, M 2can be chosen for 16 or 32.According to definite pre-coding matrix, determine the second parameter m corresponding to this pre-coding matrix 2, this second parameter m wherein 2value be [0, M 2-1] integer in.Phase difference resolution rate between poliarizing antenna directional aerial port is 2 π/M 3, wherein, M 3for the phase difference resolution rate parameter between poliarizing antenna directional aerial port, M 3value be 4.According to definite pre-coding matrix, determine the 3rd parameter m corresponding to this pre-coding matrix 3, the 3rd parameter m wherein 3value be [0, M 3-1] integer in.
In the situation that determining the first code book index according to the first parameter, subscriber equipment can be by this first parameter m 1coding, determines the first code book index i 1.In the situation that determining the second code book index according to the second parameter, subscriber equipment can be by this second parameter m 2coding, determines the second code book index i 2.
In the situation that determining the first code book index according to the first parameter and the second parameter, subscriber equipment can be by this first parameter m 1high a position and this second parameter m 2high b position carry out combined coding, determine the first code book index i 1.In the situation that determining the second code book index according to the first parameter and the second parameter, subscriber equipment can be by this first parameter m 1low c position and the low d position of this second parameter carry out combined coding, determine the second code book index i 2, wherein the value of a is in integer, the value of b is in integer, the value of c is in integer, the value of d is in integer.
In the situation that determining this index of third yard according to the first parameter, subscriber equipment can be by this first parameter m 1coding, determines this index of third yard i 3.In the situation that determining the 4th code book index according to the second parameter, subscriber equipment can be by this second parameter m 2coding, determines the 4th code book index i 4.In the situation that determining the 5th code book index according to the 3rd parameter, subscriber equipment can be by the 3rd parameter m 3coding, determines the 5th code book index i 5.
In the situation that determining the 6th code book index according to the first parameter and/or the second parameter, subscriber equipment can be by the first parameter m 1coding, determines the 6th code book index i 6, or subscriber equipment can be by the second parameter m 2coding is determined, is determined the 6th code book index i 6, or subscriber equipment can be by the first parameter m 1with the second parameter m 2carry out combined coding, determine the 6th code book index i 6.At subscriber equipment by the first parameter m 1with the second parameter m 2carry out combined coding, determine the 6th code book index i 6situation under, subscriber equipment can be by this first parameter m 1high a position and the high b position of this second parameter carry out combined coding, determine the 6th code book index i 6, wherein the value of a is in integer, the value of b is in integer.According to the 3rd parameter m 3and according to the first parameter m 1and/or second parameter m 2determine the 7th code book index i 7situation under, subscriber equipment can be by the 3rd parameter m 3with the first parameter m 1carry out combined coding, determine the 7th code book index i 7; Subscriber equipment can also be by the 3rd parameter m 3with the second parameter m 2carry out combined coding, determine the 7th code book index i 7; Subscriber equipment can also be by the 3rd parameter m 3with the first parameter m 1with the second parameter m 2carry out combined coding, determine the 7th code book index i 7.Particularly, subscriber equipment can be by the 3rd parameter m 3with the first parameter m 1low c position carry out combined coding, determine the 7th code book index i 7.Subscriber equipment can be by the 3rd parameter m 3with the second parameter m 2low d position carry out combined coding, determine the 7th code book index i 7.Subscriber equipment can also be by the 3rd parameter and the first parameter m 1low c position and the second parameter m 2low d position carry out combined coding, determine the 7th code book index i 7.The value of c is in integer, the value of d is in integer.
According to the first parameter, determining the 8th code book index i 8, according to the first parameter or according to the first parameter and the 3rd parameter, determine the 9th code book index i 9, according to the second parameter, determine the tenth code book index i 10situation under, subscriber equipment can be determined the 8th code book index i 8represent a kind of channel bandwidth, long-time quality, can determine the 9th code book index i 9represent a kind of channel arrowband, short-term characteristic, can be by the second parameter m 2encode, determine the tenth code book index i 10.Particularly, the 8th code book index i 8be the high a position of phase difference between the first antenna direction upper port, the 9th code book index i 9be the low c position of phase difference between the first antenna direction or the first antenna direction port and the phase difference between poliarizing antenna direction port, wherein the value of a is in integer, the value of c is in integer, M 1be the phase difference resolution rate parameter between the first antenna directional aerial port, M 1value and the number of antennas on the first antenna direction and antenna distance and the first antenna direction on beam area and resolution-dependent.For example, for 2 antenna ports, during antenna spacing half-wavelength, can choose M 1be 4, or for improving feedback accuracy and pre-coding matrix precision, M 1can be chosen for 16 or 32.For 4 antenna ports, during antenna spacing half-wavelength, can choose M 1be 8, or for improving feedback accuracy and pre-coding matrix precision, M 1can be chosen for 16 or 32.
306, this subscriber equipment is determined the PMI corresponding to the plurality of code book index.
307, this subscriber equipment sends this PMI to base station.
308, a plurality of code book indexes corresponding to this PMI are determined according to this PMI in base station, and wherein, the plurality of code book index is corresponding with a plurality of code book indexes that above-mentioned subscriber equipment is determined, at this, needn't repeat.
309, the pre-coding matrix corresponding with the plurality of code book determined in base station, according to this pre-coding matrix, data carried out to precoding processing, by described aerial array, to this subscriber equipment, sent out and carries out precoding processing and fall to send data
According to the method for Fig. 3, base station receives the PMI corresponding to a plurality of code book indexes that subscriber equipment sends, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station can utilize the first parameter and the second parameter, or can utilize the first parameter, the second parameter and the 3rd parameter, select suitable pre-coding matrix, data are carried out to precoding processing, in horizontal and vertical direction, form space three-dimensional wave beam, improve systematic function.
Fig. 4 a to Fig. 4 f is according to the schematic diagram of the definite PMI corresponding to a plurality of code book indexes of the method for Fig. 3.
Fig. 4 a is the structural representation of a kind of PMI, m in Fig. 4 a 1represent the first parameter, m 2represent the second parameter, i 1represent the first code book index, i 2represent the second code book index.
Fig. 4 b is the structural representation of another kind of PMI, m in Fig. 4 b 1represent the first parameter, m 2represent the second parameter, i 1represent the first code book index, i 2represent the second code book index, the value of a is in integer, the value of b is in integer, the value of c is in integer, the value of d is in integer.Wherein, M 1be the phase difference resolution rate parameter between the first antenna directional aerial port, M 2it is the phase difference resolution rate parameter between the second antenna directional aerial port.
Fig. 4 c is the structural representation of another kind of PMI, m in Fig. 4 c 1represent the first parameter, m 2represent the second parameter, m 3represent the 3rd parameter.I 3represent this index of third yard, i 4represent the 4th code book index, i 5represent the 5th code book index.
Fig. 4 d is the structural representation of another kind of PMI, m in Fig. 4 d 1represent the first parameter, m 2represent the second parameter, m 3represent the 3rd parameter.I 6represent the 6th code book index, i 7represent the 7th code book index.Wherein, the value of d is in integer, M 2it is the phase difference resolution rate parameter between the second antenna directional aerial port.
Fig. 4 e is the structural representation of another kind of PMI, m in Fig. 4 e 1represent the first parameter, m 2represent the second parameter, m 3represent the 3rd parameter.I 6represent the 6th code book index, i 7represent the 7th code book index.The value of a is in integer, the value of b is in integer, the value of c is in integer, the value of d is in integer.Wherein, M 1be the phase difference resolution rate parameter between the first antenna directional aerial port, M 2it is the phase difference resolution rate parameter between the second antenna directional aerial port.
Fig. 4 f is the structural representation of another kind of PMI, m in Fig. 4 f 1represent the first parameter, m 2represent the second parameter, m 3represent the 3rd parameter.I 8represent the 8th code book index, i 9represent the 9th code book index, i 10represent the tenth code book index.
It should be noted that the rectangle number in Fig. 4 a to Fig. 4 f is only schematic diagram, do not limit the figure place of the first code book index to the nine code book indexes.
Fig. 5 is according to the structural representation of the subscriber equipment of the embodiment of the present invention.Subscriber equipment 500 shown in Fig. 5 can execution graph 1 or Fig. 3 in each step of carrying out of subscriber equipment.As shown in Figure 5, subscriber equipment 500 comprises receiving element 501, control unit 502 and transmitting element 503.
Receiving element 501, the reference signal sending by aerial array for receiving base station.
Control unit 502, for measuring this reference signal, obtains measurement result.
Control unit 502 also, for according to measurement result, is selected the pre-coding matrix corresponding to measurement result from code book.
Control unit 502, also for determining a plurality of code book indexes corresponding to this pre-coding matrix, wherein the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of this aerial array and the second antenna direction of this aerial array, the first parameter and this second parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row or column that this first antenna direction is this planar antenna array, the column or row that this second antenna direction is this planar antenna array.
Control unit 502, also for determining the PMI corresponding to the plurality of code book index.
Transmitting element 503, for sending this PMI to this base station, so that this base station is selected for sending the pre-coding matrix of data according to this PMI.
According to the subscriber equipment 500 shown in Fig. 5, subscriber equipment 500 is when sending PMI to base station, and this PMI is corresponding to a plurality of code book indexes, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station can utilize the first parameter and the second parameter, in horizontal and vertical direction, forms space three-dimensional wave beam, improves systematic function.
Optionally, control unit 502, specifically for according to the first parameter or according to the first parameter and the second parameter, determines the first code book index in the plurality of code book index.Control unit 502, specifically for according to the second parameter or according to the first parameter and the second parameter, determines the second code book index in the plurality of code book index.
Further, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of this aerial array, and wherein the first parameter, the second parameter and the 3rd parameter are used for forming this pre-coding matrix.
Optionally, control unit 502, specifically for determining this index of third yard in the plurality of code book index according to the first parameter.Control unit 502, specifically for determining the 4th code book index in the plurality of code book index according to the second parameter.Control unit 502, specifically for determining the 5th code book index in the plurality of code book index according to the 3rd parameter.
Optionally, control unit 502, specifically for determining the 6th code book index in the plurality of code book index according to the first parameter and/or the second parameter.Control unit 502, specifically for according to the 3rd parameter, and determines the 7th code book index in the plurality of code book index according to the first parameter and/or the second parameter.
Optionally, control unit 502, specifically for determining the 8th code book index in the plurality of code book index according to the first parameter.Control unit 502, specifically for according to the first parameter, or determines the 9th code book index in the plurality of code book index according to the first parameter and the 3rd parameter.Control unit 502, specifically for determining the tenth code book index in the plurality of code book index according to the second parameter.
Optionally, receiving element 501, the antenna configuration information also sending by this aerial array for receiving this base station.Control unit 502, specifically for based on this antenna configuration information, measures the reference signal that this base station sends by aerial array.Control unit 502 specifically for according to measurement result and this antenna configuration information, is selected this pre-coding matrix from this code book.
Fig. 6 is according to the structural representation of the base station of the embodiment of the present invention.Base station 600 shown in Fig. 6 can execution graph 2 and Fig. 3 in each step of carrying out of base station.As shown in Figure 6, base station 600 comprises: receiving element 601, control unit 602 and transmitting element 603.
Receiving element 601, the PMI sending for receiving subscriber equipment.
Control unit 602, for determining a plurality of code book indexes corresponding to this PMI, the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of aerial array and the second antenna direction of this aerial array, this aerial array is planar array antenna, the first parameter and the second parameter are used for forming pre-coding matrix, the row or column that this first antenna direction is this planar array antenna, the column or row that this second antenna direction is this planar array antenna.
Control unit 602, also, for determining the pre-coding matrix corresponding with the plurality of code book index, according to this pre-coding matrix, carries out precoding processing to data.
Transmitting element 603, for by this aerial array, sends the data of carrying out precoding processing to this subscriber equipment.
According to the base station 600 shown in Fig. 6, base station 600 receives the PMI corresponding to a plurality of code book indexes that subscriber equipment sends, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station 600 can utilize the first parameter and the second parameter, in horizontal and vertical direction, forms space three-dimensional wave beam, improves systematic function.
Optionally, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of described aerial array, and wherein the first parameter, the second parameter and the 3rd parameter are used for forming this pre-coding matrix.
Optionally, transmitting element 603, also for to this subscriber equipment transmitting antenna configuration information, so that this subscriber equipment based on this antenna configuration information measuring reference signals, is selected pre-coding matrix and determined PMI from code book.
Optionally, this antenna configuration information can be carried by following any: MIB, SIB, DCI and RRC signaling.Particularly, base station can be by one or more these antenna configuration informations of bit notifying user equipment in 10 bits that retain in MIB.Base station can also by this antenna configuration information of this subscriber equipment of existing signaling in MIB, for example, increase cyclic redundancy check (CRC) mask in MIB and notify this antenna configuration information.Base station can also be by implicit this antenna configuration information of notifying of existing signaling in SIB or RRC.Base station can also be by increasing this antenna configuration information of signaling in SIB or RRC.Base station can also increase one or more new DCI forms, and these one or more new DCI forms are corresponding one by one with antenna configuration information, and subscriber equipment in the situation that this new DCI detected, just can be determined the antenna configuration information corresponding with this DCI.
Optionally, this antenna configuration information comprises antenna port configuration structure information and/or antenna port information of number on the first antenna direction and the second antenna direction.
Fig. 7 is according to the structural representation of the subscriber equipment of the embodiment of the present invention.Subscriber equipment 700 shown in Fig. 7 can execution graph 1 or Fig. 3 in each step of carrying out of subscriber equipment.As shown in Figure 7, subscriber equipment 700 comprises transceiver 701, processor 702 and memory 703.
Transceiver 701, the reference signal sending by aerial array for receiving base station.
Memory 703, for storing wireless communication protocol software.
Processor 702 for reading this wireless communication protocol software, and is measured this reference signal under the driving of this wireless communication protocol software, obtains measurement result.
Processor 702 also, for according to measurement result, is selected the pre-coding matrix corresponding to measurement result from code book.
Processor 702, also for determining a plurality of code book indexes corresponding to this pre-coding matrix, wherein the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of this aerial array and the second antenna direction of this aerial array, the first parameter and this second parameter are used for forming this pre-coding matrix, this aerial array is planar array antenna, the row or column that this first antenna direction is this planar antenna array, the column or row that this second antenna direction is this planar antenna array.
Processor 702, also for determining the PMI corresponding to the plurality of code book index.
Transceiver 701, also for sending this PMI to this base station, so that this base station is selected for sending the pre-coding matrix of data according to this PMI.
According to the subscriber equipment 700 shown in Fig. 7, subscriber equipment 700 is when sending PMI to base station, and this PMI is corresponding to a plurality of code book indexes, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station can utilize the first parameter and the second parameter, in horizontal and vertical direction, forms space three-dimensional wave beam, improves systematic function.
Optionally, processor 702, specifically for according to the first parameter or according to the first parameter and the second parameter, determines the first code book index in the plurality of code book index.Processor 702, specifically for according to the second parameter or according to the first parameter and the second parameter, determines the second code book index in the plurality of code book index.
Further, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of this aerial array, and wherein the first parameter, the second parameter and the 3rd parameter are used for forming this pre-coding matrix.
Optionally, processor 702, specifically for determining this index of third yard in the plurality of code book index according to the first parameter.Processor 702, specifically for determining the 4th code book index in the plurality of code book index according to the second parameter.Processor 702, specifically for determining the 5th code book index in the plurality of code book index according to the 3rd parameter.
Optionally, processor 702, specifically for determining the 6th code book index in the plurality of code book index according to the first parameter and/or the second parameter.Processor 702, specifically for according to the 3rd parameter, and determines the 7th code book index in the plurality of code book index according to the first parameter and/or the second parameter.
Optionally, processor 702, specifically for determining the 8th code book index in the plurality of code book index according to the first parameter.Processor 702, specifically for according to the first parameter, or determines the 9th code book index in the plurality of code book index according to the first parameter and the 3rd parameter.Processor 702, specifically for determining the tenth code book index in the plurality of code book index according to the second parameter.
Optionally, transceiver 701, the antenna configuration information also sending by this aerial array for receiving this base station.Processor 702, specifically for based on this antenna configuration information, measures the reference signal that this base station sends by aerial array.Processor 702 specifically for according to measurement result and this antenna configuration information, is selected this pre-coding matrix from this code book.
Fig. 8 is according to the structural representation of the base station of the embodiment of the present invention.Base station 800 shown in Fig. 8 can execution graph 2 and Fig. 3 in each step of carrying out of base station.As shown in Figure 8, base station 800 comprises: transceiver 801, processor 802 and memory 803.
Transceiver 801, the PMI sending for receiving subscriber equipment.
Memory 803, for storing wireless communication protocol software.
Processor 802, be used for reading this wireless communication protocol software, and under the driving of this wireless communication protocol software, determine a plurality of code book indexes corresponding to this PMI, the plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of aerial array and the second antenna direction of this aerial array, this aerial array is planar array antenna, the first parameter and the second parameter are used for forming pre-coding matrix, the row or column that this first antenna direction is this planar array antenna, the column or row that this second antenna direction is this planar array antenna.
Processor 802, also, for determining the pre-coding matrix corresponding with the plurality of code book index, according to this pre-coding matrix, carries out precoding processing to data.
Transceiver 801, for by this aerial array, sends the data of carrying out precoding processing to this subscriber equipment.
According to the base station 800 shown in Fig. 8, base station 800 receives the PMI corresponding to a plurality of code book indexes that subscriber equipment sends, and the plurality of code book index is corresponding to the first parameter of the first antenna direction and the second parameter of the second antenna direction.Base station 800 can utilize the first parameter and the second parameter, in horizontal and vertical direction, forms space three-dimensional wave beam, improves systematic function.
Optionally, the plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of described aerial array, and wherein the first parameter, the second parameter and the 3rd parameter are used for forming this pre-coding matrix.
Optionally, transceiver 801, also for to this subscriber equipment transmitting antenna configuration information, so that this subscriber equipment based on this antenna configuration information measuring reference signals, is selected pre-coding matrix and determined PMI from code book.
Optionally, this antenna configuration information can be carried by following any: MIB, SIB, DCI and RRC signaling.Particularly, base station can be by one or more these antenna configuration informations of bit notifying user equipment in 10 bits that retain in MIB.Base station can also by this antenna configuration information of this subscriber equipment of existing signaling in MIB, for example, increase cyclic redundancy check (CRC) mask in MIB and notify this antenna configuration information.Base station can also be by implicit this antenna configuration information of notifying of existing signaling in SIB or RRC.Base station can also be by increasing this antenna configuration information of signaling in SIB or RRC.Base station can also increase one or more new DCI forms, and these one or more new DCI forms are corresponding one by one with antenna configuration information, and subscriber equipment in the situation that this new DCI detected, just can be determined the antenna configuration information corresponding with this DCI.
Optionally, this antenna configuration information comprises antenna port configuration structure information and/or antenna port information of number on the first antenna direction and the second antenna direction.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
In the several embodiment that provide in the application, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, during actual realization, can have other dividing mode, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.
If described function usings that the form of SFU software functional unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement; within all should being encompassed in protection scope of the present invention, so protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (22)

1. a code book feedback method, is characterized in that, comprising:
The reference signal that measurement base station sends by aerial array obtains measurement result;
From code book, select the pre-coding matrix corresponding to described measurement result;
Determine a plurality of code book indexes corresponding to described pre-coding matrix, wherein said a plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of described aerial array and the second antenna direction of described aerial array, described the first parameter and described the second parameter are used for forming described pre-coding matrix, described aerial array is planar array antenna, the row that described the first antenna direction is described planar antenna array, the row that described the second antenna direction is described planar antenna array;
Determine the pre-coding matrix indication PMI corresponding to described a plurality of code book indexes, to described base station, send described PMI, so as described base station selected described PMI indicated for sending the pre-coding matrix of data.
2. the method for claim 1, is characterized in that, described a plurality of code book indexes of determining corresponding to described pre-coding matrix, comprising:
According to described the first parameter or according to described the first parameter and described the second parameter, determine the first code book index in described a plurality of code book index;
According to described the second parameter or according to described the first parameter and described the second parameter, determine the second code book index in described a plurality of code book index.
3. the method for claim 1, it is characterized in that, described a plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of described aerial array, and wherein said the first parameter, described the second parameter and described the 3rd parameter are used for forming described pre-coding matrix.
4. method as claimed in claim 3, is characterized in that, described a plurality of code book indexes of determining corresponding to described pre-coding matrix, comprising:
According to described the first parameter, determine this index of third yard in described a plurality of code book index;
According to described the second parameter, determine the 4th code book index in described a plurality of code book index;
According to described the 3rd parameter, determine the 5th code book index in described a plurality of code book index.
5. method as claimed in claim 3, is characterized in that, described a plurality of code book indexes of determining corresponding to described pre-coding matrix, comprising:
According to described the first parameter and/or described the second parameter, determine the 6th code book index in described a plurality of code book index;
According to described the 3rd parameter, and determine the 7th code book index in described a plurality of code book index according to described the first parameter and/or described the second parameter.
6. method as claimed in claim 3, is characterized in that, described a plurality of code book indexes of determining corresponding to described pre-coding matrix, comprising:
According to described the first parameter, determine the 8th code book index in described a plurality of code book index;
According to described the first parameter, or determine the 9th code book index in described a plurality of code book index according to described the first parameter and described the 3rd parameter;
According to described the second parameter, determine the tenth code book index in described a plurality of code book index.
7. the method as described in claim 1-6 any one, is characterized in that, before the reference signal sending by aerial array in described measurement base station, described method also comprises:
Receive the antenna configuration information that described base station sends by described aerial array;
The reference signal that described measurement base station sends by aerial array comprises:
Based on described antenna configuration information, measure the described reference signal that described base station sends by described aerial array;
The described pre-coding matrix of selecting from code book corresponding to described measurement result, comprising:
According to described measurement result and described antenna configuration information, from described code book, select described pre-coding matrix.
8. a code book feedback method, is characterized in that, comprising:
Receive the pre-coding matrix indication PMI that subscriber equipment sends;
Determine a plurality of code book indexes corresponding to described PMI, described a plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of aerial array and the second antenna direction of described aerial array, described aerial array is planar array antenna, described the first parameter and described the second parameter are used for forming pre-coding matrix, the row that described the first antenna direction is described planar antenna array, the row that described the second antenna direction is described planar antenna array;
Determine the described pre-coding matrix corresponding with described a plurality of code book indexes, according to described pre-coding matrix, data are carried out to precoding processing, by described aerial array, to described subscriber equipment, send the data of carrying out precoding processing.
9. method as claimed in claim 8, it is characterized in that, described a plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of described aerial array, and wherein said the first parameter, described the second parameter and described the 3rd parameter are used for forming described pre-coding matrix.
10. method as claimed in claim 8 or 9, is characterized in that, before the encoder matrix indication PMI sending at described reception subscriber equipment, described method also comprises:
To described subscriber equipment transmitting antenna configuration information, so that described subscriber equipment based on described antenna configuration information measuring reference signals, is selected pre-coding matrix and determined described PMI from code book.
11. methods as claimed in claim 10, is characterized in that, described antenna configuration information is carried by Master Information Block MIB or system information block SIB or descending control message DCI or radio resource control RRC signaling.
12. methods as described in claim 10 or 11, is characterized in that described antenna configuration information comprises antenna port configuration structure information and/or antenna port information of number on described the first antenna direction and described the second antenna direction.
13. 1 kinds of subscriber equipmenies, is characterized in that, comprising:
Receiving element, the reference signal sending by aerial array for receiving base station;
Control unit, obtains measurement result for measuring described reference signal;
Described control unit, also for selecting the pre-coding matrix corresponding to described measurement result from code book;
Described control unit, also for determining a plurality of code book indexes corresponding to described pre-coding matrix, wherein said a plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of described aerial array and the second antenna direction of described aerial array, described the first parameter and described the second parameter are used for forming described pre-coding matrix, described aerial array is planar array antenna, the row that described the first antenna direction is described planar antenna array, the row that described the second antenna direction is described planar antenna array;
Described control unit, also for determining the pre-coding matrix indication PMI corresponding to described a plurality of code book indexes;
Transmitting element, for sending described PMI to described base station so that described base station selected described PMI indicated for sending the pre-coding matrix of data.
14. subscriber equipmenies as claimed in claim 13, is characterized in that,
Described control unit, specifically for according to described the first parameter or according to described the first parameter and described the second parameter, determines the first code book index in described a plurality of code book index;
Described control unit, specifically for according to described the second parameter or according to described the first parameter and described the second parameter, determines the second code book index in described a plurality of code book index.
15. subscriber equipmenies as claimed in claim 14, it is characterized in that, described a plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of described aerial array, and wherein said the first parameter, described the second parameter and described the 3rd parameter are used for forming described pre-coding matrix.
16. subscriber equipmenies as claimed in claim 15, is characterized in that,
Described control unit, specifically for determining this index of third yard in described a plurality of code book index according to described the first parameter;
Described control unit, specifically for determining the 4th code book index in described a plurality of code book index according to described the second parameter;
Described control unit, specifically for determining the 5th code book index in described a plurality of code book index according to described the 3rd parameter.
17. subscriber equipmenies as claimed in claim 15, is characterized in that,
Described control unit, specifically for determining the 6th code book index in described a plurality of code book index according to described the first parameter and/or described the second parameter;
Described control unit, specifically for according to described the 3rd parameter, and determines the 7th code book index in described a plurality of code book index according to described the first parameter and/or described the second parameter.
18. subscriber equipmenies as claimed in claim 15, is characterized in that,
Described control unit, specifically for determining the 8th code book index in described a plurality of code book index according to described the first parameter;
Described control unit, specifically for according to described the first parameter, or determines the 9th code book index in described a plurality of code book index according to described the first parameter and described the 3rd parameter;
Described control unit, specifically for determining the tenth code book index in described a plurality of code book index according to described the second parameter.
19. subscriber equipmenies as described in claim 13-18 any one, is characterized in that,
Described receiving element, the antenna configuration information also sending by described aerial array for receiving described base station;
Described control unit, specifically for based on described antenna configuration information, measures the described reference signal that described base station sends by described aerial array;
Described control unit specifically for according to described measurement result and described antenna configuration information, is selected described pre-coding matrix from described code book.
20. 1 kinds of base stations, is characterized in that, comprising:
Receiving element, the pre-coding matrix indication PMI sending for receiving subscriber equipment;
Control unit, for determining a plurality of code book indexes corresponding to described PMI, described a plurality of code book index is corresponding to the second parameter of the first parameter of the first antenna direction of aerial array and the second antenna direction of described aerial array, described aerial array is planar array antenna, described the first parameter and described the second parameter are used for forming pre-coding matrix, the row that described the first antenna direction is described planar antenna array, the row that described the second antenna direction is described planar antenna array;
Described control unit, also, for determining the described pre-coding matrix corresponding with described a plurality of code book indexes, according to described pre-coding matrix, carries out precoding processing to data;
Transmitting element, for sending the data of carrying out precoding processing to described subscriber equipment by described aerial array.
21. base stations as claimed in claim 20, it is characterized in that, described a plurality of code book index is also corresponding to the 3rd parameter of the poliarizing antenna direction of described aerial array, and wherein said the first parameter, described the second parameter and described the 3rd parameter are used for forming described pre-coding matrix.
22. base stations as described in claim 20 or 21, is characterized in that,
Described transmitting element, also for to described subscriber equipment transmitting antenna configuration information, so that described subscriber equipment based on described antenna configuration information measuring reference signals, is selected pre-coding matrix and determined described PMI from code book.
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