CN102255705B - Uplink precoding information indication method and device - Google Patents
Uplink precoding information indication method and device Download PDFInfo
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- CN102255705B CN102255705B CN 201110191285 CN201110191285A CN102255705B CN 102255705 B CN102255705 B CN 102255705B CN 201110191285 CN201110191285 CN 201110191285 CN 201110191285 A CN201110191285 A CN 201110191285A CN 102255705 B CN102255705 B CN 102255705B
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Abstract
The invention discloses an uplink precoding information indication method and an uplink precoding information indication device. The method comprises that: a receiver selects a precoding matrix from a predetermined uplink four-antenna codebook according to uplink channel information and a determined transmission layer number, wherein the precoding matrix in the uplink four-antenna codebook is determined in different preset computing ways according to direction parameters and ratio parameters for different transmission layer numbers; and the receiver transmits the transmission layer number andprecoding matrix index indication information to indicate the transmitter to precode uplink data by using the selected precoding matrix. The invention provides the codebook applied to Relay backhaul uplink four-antenna transmission and a corresponding precoding information indication method, thereby improving Relay backhaul uplink transmission efficiency.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of precoding information indicating means and device.
Background technology
Compare mobile communication system in the past, therefore the demand that LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) may use the relatively poor high band of covering power and support high data rate traffic may need to dispose more website.If all eNB are (Evolved NodeB, evolution base station) and CN (Core Network, core net) back haul link between (Backhaul) still uses traditional wired connection mode, can bring bigger deployment difficulty and lower deployment cost to operator, the site deployment flexibility also is subjected to bigger restriction.
Therefore 3GPP (The 3rd Generation Partnership Project, third generation partner program) has started relaying (Relay) Study on Technology at LTE-A and has solved the problems referred to above, and wireless back haul link solution is provided.Be specially in network, introduced via node (Relay Node, RN), RN links the eNB of the alms giver residential quarter (Donor Cell) of its ownership by wave point, has 2 airlinks:
1) back haul link between the donor eNB of RN and alms giver residential quarter also is Relay backhaul;
2) link between the UE (User Equipment, user terminal) of RN and ownership RN is called access link.
Adopting RN in the band in the LTE-A standard at present, also is that Relay Backhaul passes through the multiplexing identical running time-frequency resource of TDD mode with access link.RN possesses independently residential quarter ID, has the independent radio resources managerial ability, and LTE/LTE-A user can be inserted in the residential quarter of its management.From the angle of UE, RN is the part of wireless access network, and its behavior is identical with eNB.RN links to each other with donor eNB by wireless mode.RN comprises two physical layer entity at least, and an entity is used for communicating with UE, realizes the behavior when common eNB and user communicate; Another entity is used for and donor eNB communicates, and realizes the behavior when common UE and eNB communicate.If RN is configured to the standard of support of enhanced, can also support enhancing technology such as R-PDCCH when then RN and donor eNB communicate.
MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) system uses a plurality of emissions, reception antenna, utilize signal sky, the time, frequency-domain combined processing obtains speed, diversity and array gain.In the mimo system, if transmitter can be known channel information in some way, just can be optimized sending signal according to the characteristic of channel, to improve the quality of reception and reduction to the requirement of receiver complexity.The general feedback system that adopts quantized channel information in real system is to reduce feedback overhead and feedback delay.
In the multiaerial system based on linear predictive coding, receiver is selected the code book index of suitable pre-coding matrix from the linear predictive coding code book according to channel information, feed back to transmitter, make transmitter carry out suitable preliminary treatment to sending signal, or/and reliability, this pre-coding matrix can be matrix form or vector form with the validity of raising information transmission.
Up 4 port transmission of Relay Backhaul adopt with common UE and use identical code book in the present LTE-A standard, shown in table 1～4:
Table 1: the up 4 antenna ports { code book (υ=1) of 0,1,2,3} transmission
Table 2: the up 4 antenna ports { code book (υ=2) of 0,1,2,3} transmission
Table 3: the up 4 antenna ports { code book (number of plies υ=3) of 0,1,2,3} transmission
Table 4: the uplink antenna port { code book (number of plies υ=4) of 0,1,2,3} transmission
Wherein, j represents-1 square root.
On the one hand, because the antenna height of domestic consumer is lower, scattering object on every side is abundanter, and common UE is lower to the spatial coherence of channel between the e-NB, and therefore above code book (table 1～4) serves as the main scene of optimizing with low associated scenario.On the other hand, because the signal peak-to-average ratio ability to bear of common UE is relatively poor, the low signal peak-to-average force ratio is the main design criterion of above code book (table 1～4).
Yet for RN, on the one hand, because the antenna height of Relay Node is far above common UE, the spatial coherence of Relaybackhaul up channel will be far above common UE to the up channel between the base station; On the other hand, Relay Node device to the ability to bear of signal peak-to-average ratio also far above common UE.Therefore, serve as main optimization scene, be that the up code book of design criterion will bring tangible performance loss in the uplink of Relay backhaul with the low signal peak-to-average force ratio with low associated scenario.
Summary of the invention
The invention provides up precoding information indicating means and the device of a kind of Relay of being applicable to backhaul uplink, in order to improve the efficient of Relay backhaul uplink.
The invention provides a kind of up precoding information indicating means, comprising:
Receiving terminal is according to uplink channel information and definite transmission number of plies, from predetermined up 4 antenna codebooks, select a pre-coding matrix, wherein, for the different transmission numbers of plies, the pre-coding matrix in up 4 antenna codebooks is determined by different default account forms with ratio parameter according to directioin parameter;
Send the transmission number of plies and pre-coding matrix index indication information to transmitting terminal, use the pre-coding matrix of selecting that upstream data is carried out precoding processing with the indication transmitting terminal.
The present invention also provides a kind of up recoding processing method, comprising:
Transmitting terminal receives the transmission number of plies and pre-coding matrix index indication information;
Transmitting terminal is selected the pre-coding matrix corresponding with the transmission number of plies that receives and pre-coding matrix index from up 4 antenna codebooks, wherein, up 4 antenna codebooks that transmitting terminal uses are identical with up 4 antenna codebooks that receiving terminal uses;
Transmitting terminal uses the pre-coding matrix of selecting that upstream data is carried out precoding processing.
The present invention also provides a kind of up precoding information indicating device, comprising:
The pre-coding matrix selected cell, be used for according to uplink channel information and definite transmission number of plies, from predetermined up 4 antenna codebooks, select a pre-coding matrix, wherein, for the different transmission numbers of plies, the pre-coding matrix in up 4 antenna codebooks is determined by different default account forms with ratio parameter according to directioin parameter;
The pre-coding matrix indicating member is used for sending the transmission number of plies and pre-coding matrix index indication information to transmitting terminal, uses the pre-coding matrix of selecting that upstream data is carried out precoding processing with the indication transmitting terminal.
The present invention also provides a kind of up precoding processing device, comprising:
The indication receiving element is used for receiving the transmission number of plies and pre-coding matrix index indication information;
The pre-coding matrix selected cell, be used for selecting the pre-coding matrix corresponding with the transmission number of plies that receives and pre-coding matrix index from up 4 antenna codebooks, wherein, up 4 antenna codebooks of pre-coding matrix selected cell use are identical with up 4 antenna codebooks that up precoding information indicating device uses;
The precoding processing unit is used for using the pre-coding matrix of selecting that upstream data is carried out precoding processing.
Utilize up precoding information indicating means provided by the invention and device, up recoding processing method and device to have following beneficial effect: to the invention provides the code book and the corresponding precoding information indicating means that are applicable to up 4 antenna transmission of Relay backhaul, thereby improve the efficient of Relay backhaul uplink.
Description of drawings
Fig. 1 is up precoding information indicating means flow chart in the present embodiment;
Fig. 2 is up recoding processing method flow chart in the embodiment of the invention;
Fig. 3 is up precoding information indicating device structure chart in the embodiment of the invention;
Fig. 4 is up precoding processing structure drawing of device in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples up precoding information indicating means provided by the invention and device, up recoding processing method and device are explained in more detail.
In the multiaerial system based on linear predictive coding, receiver is selected suitable pre-coding matrix (or vector) index according to channel information from the linear predictive coding code book, feed back to transmitter, enable to carry out suitable preliminary treatment to sending signal, with the validity of raising information transmission or/and reliability.On the one hand, because the antenna height of Relay Node is far above common UE, the spatial coherence of Relay backhaul up channel will be far above common UE to the up channel between the base station.On the other hand, Relay Node device to the ability to bear of signal peak-to-average ratio also far above common UE.Therefore, serve as main optimization scene, be that up 4 antenna codebooks of design criterion will bring tangible performance loss in the uplink of Relay backhaul with the low signal peak-to-average force ratio with low associated scenario.
Particularity based on channel characteristics and the Relay Node of Relay backhaul, the embodiment of the invention provides code book and the corresponding precoding information indicating means of a kind of Relay of being applicable to backhaul uplink, thereby improve the efficient of Relay backhaul uplink, as shown in Figure 1, this method comprises:
Step S101, receiving terminal is according to uplink channel information and definite transmission number of plies, from predetermined up 4 antenna codebooks, select a pre-coding matrix, wherein, for the different transmission numbers of plies, the pre-coding matrix in up 4 antenna codebooks is determined by different default account forms with ratio parameter according to directioin parameter;
Here the transmission number of plies of Que Dinging refers to the transmission number of plies that the definite transmitting terminal uplink of receiving terminal is supported, concrete definite mechanism adopts the process of having now, no longer describes in detail here.
Preferably, the directioin parameter representative here quantizes the different directions that spatial character obtains, and ratio parameter is preceding N
T/ 2 antennas and back N
TThe ratio of phase information between/2 antennas, N
TThe expression number of transmit antennas is for the scene of applied 4 antenna ports of the present invention, N
TValue is 4.
Step S102, receiving terminal sends the transmission number of plies and pre-coding matrix index indication information to transmitting terminal, uses the pre-coding matrix of selecting that upstream data is carried out precoding processing with the indication transmitting terminal.
For each transmission number of plies, utilize the pre-coding matrix index of up 4 antenna codebooks can uniquely determine a pre-coding matrix, therefore, to issue transmitting terminal for the indication information of the transmission number of plies and pre-coding matrix index, and can make transmitting terminal determine that concrete which pre-coding matrix that uses carries out precoding to upstream data.
In the preferred embodiment of the present invention, receiving terminal specifically will transmit the number of plies and pre-coding matrix index, be mapped as unique information field bit value and indication to transmitting terminal.Particularly, receiving terminal is according to mapping relations one to one between the transmission number of plies, pre-coding matrix index and the information field bit value set up in advance, determines to transmit the information field bit value that the number of plies and pre-coding matrix index shine upon.Certainly, can also adopt the mode of the pre-coding matrix of other indication selection.
Receiving terminal is evolution base station eNB in the embodiment of the invention, and transmitting terminal is via node RN, can also be applied to certainly in similar other network equipment of transmitting scene.
In the embodiment of the invention, a kind of new up 4 antenna codebooks are provided, for the different transmission numbers of plies, determine pre-coding matrix with ratio parameter by different default account forms according to directioin parameter, because having represented, directioin parameter quantizes the different directions that spatial character obtains, and ratio parameter has been considered the phase place changing factor between two groups of antennas, therefore, can design and be applicable to the spatial coherence height, the code book of up 4 antenna transmission that the equipment that the ability to bear of signal peak-to-average ratio is high uses, avoided for the spatial coherence height, the performance loss that the equipment that the ability to bear of signal peak-to-average ratio is high adopts up 4 antenna codebooks of common UE to bring, if apply it to the Relay backhaul of evolution base station eNB and via node RN, efficient that then can the Relaybackhaul uplink.
Preferably, the directioin parameter of pre-coding matrix is v in the present embodiment
m, v
M ', ratio parameter is
M, m ', n are positive integer, wherein:
v
m＝[1e
j2πm/M]
T
N, M are positive integer.
The concrete value of N, M can be chosen according to actual scene, and preferably, N is 2 or 4, and described M is 32,16 or 8.
M wherein, m ', n can select concrete value according to actual scene, and is independent between each value, can be the same or different.
Based on above-mentioned directioin parameter and ratio parameter, for each transmission number of plies, the pre-coding matrix in the embodiment of the invention in up 4 antenna codebooks is specifically determined in the following way according to directioin parameter and ratio parameter:
The every row of pre-coding matrix are made up of two parts up and down, the residing row difference of two parts up and down, and top is by v
m/ v
M 'Composition, lower part are by v
m/ v
M 'With
And the product of determining symbol (being sign) is formed; Be multiplied by antenna factor at last again and obtain pre-coding matrix.Wherein, the columns of pre-coding matrix equals to transmit the number of plies.
Further, when the columns of pre-coding matrix is a plurality of, mutually orthogonal between a plurality of row.
Provide the concrete preferred embodiment of the present invention below.
The transmission number of plies is 1 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
The transmission number of plies is 2 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
The transmission number of plies is 3 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
The transmission number of plies is 4 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
In the above-mentioned pre-coding matrix, matrix front, equal sign the right is antenna factor, N
TThe expression number of transmit antennas is for the scene of applied 4 antenna ports of the present invention, N
TValue is 4.
For each transmission number of plies, can determine m according to actual scene, m ', the value of n, thereby the quantity of pre-coding matrix in definite up 4 antenna codebooks.
In the preferred embodiments of the present invention, specifically for each transmission number of plies, determine m, m ', the value of n is as follows:
The transmission number of plies is 1 o'clock, and the value of m is 0,1,2,3,4,5,6,7, and the value of n is 0,1,2,3;
The transmission number of plies is 2 o'clock, and the value of m is 0,1,2,3,4,5,6,7, and the value of m ' is 0,1,2,3,4,5,6,7, and the value of n is 0,1;
The transmission number of plies is 3 o'clock, and the value of m is 0,1,2,3, and the value of m ' is 4,5,6,7, and the value of n is 0,1;
The transmission number of plies is 4 o'clock, and the value of m is 0,1,2,3, and the value of m ' is 4,5,6,7, and the value of n is 0,1.
As seen pass through to determine each transport layer m, m ', the value of n makes the code book of generation less, reduces signaling consumption.
Because the antenna height of Relay Node is far above common UE, the spatial coherence of Relay backhaul up channel will be far above common UE to the up channel between the base station, the order of its channel matrix is generally lower, so Relay Backhaul up link is supported less than the probability of multilayer (be 3 or 4 as the number of plies) data flow transmission.Therefore can further design the less number of plies and be 3 or/and 4 o'clock code book, with the saving signaling expense.
Preferably, transmit the number of plies according to above-mentioned for each, m, m ', the value of n generates needed 4 antenna codebooks, when carrying out the code book generation, can determine to generate the size of code book as required.Provide two specific embodiments of the present invention below, provide and determine m, m ', up 4 antenna codebooks that generate after the value of n it will be appreciated by those skilled in the art that concrete code book form is not limited thereto.
Embodiment 1
Number of data layers is that the value of 1, m is 0,1,2,3,4,5,6,7, and the value of n is 0,1,2,3, and pre-coding matrix quantity is 16 in the code book that generates, and is specifically as shown in table 5:
Table 5: the up 4 antenna ports { code book (υ=1) of 0,1,2,3} transmission
Number of data layers is that the value of 2, m is 0,1,2,3,4,5,6,7, and the value of m ' is 0,1,2,3,4,5,6,7, and the value of n is 0,1, and pre-coding matrix quantity is 16 in the code book that generates, specifically shown in table 6 and table 7:
Table 6: the up 4 antenna ports { code book (υ=2) of 0,1,2,3} transmission
Or
Table 7: the up 4 antenna ports { code book (υ=2) of 0,1,2,3} transmission
Number of data layers is that the value of 3, m is 0,1,2,3, and the value of m ' is 4,5,6,7, and the value of n is 0,1, and pre-coding matrix quantity is 8 in the code book that generates, and is specifically as shown in table 8:
Table 8: the up 4 antenna ports { code book (υ=3) of 0,1,2,3} transmission
Number of data layers is that the value of 4, m is 0,1,2,3, and the value of m ' is 4,5,6,7, and the value of n is 0,1, and pre-coding matrix quantity is 8 in the code book that generates, and is specifically as shown in table 9:
Table 9: the uplink antenna port { code book (υ=4) of 0,1,2,3} transmission
Code book index in the above table is pre-coding matrix index.
The data flow code word that uplink is supported is counted difference, and the transmission number of plies that uplink can be supported is also different, as to a code word, supports the transmission number of plies 1～2, for two code words, supports the transmission number of plies 2～4; Receiving terminal is according to mapping relations one to one between the transmission number of plies, pre-coding matrix index and the information field bit value set up in advance, the information field bit value that the index value of definite transmission number of plies of selecting and pre-coding matrix shines upon, wherein, can set up above-mentioned mapping relations respectively at a code word, two code words.
Under code word setting up in the present embodiment and two the code word situations, mapping relations are as shown in table 10 one to one between the transmission number of plies, pre-coding matrix index and the information field bit value.Concrete mapping relations are not limited thereto, and can also adopt other mapping mode, as long as can unique indication transmit the number of plies, pre-coding matrix index.
Table 10: the content in precoding information territory
Wherein, the pre-coding matrix indication when TPMI is transmission is corresponding to the codewords indexes in table 5,6 or 7,8,9 code books.
Embodiment 2
Number of data layers is that the value of 1, m is 0,1,2,3,4,5,6,7, and the value of n is 0,1,2,3, by further right
Select, pre-coding matrix quantity is 32 in the code book that generates, and is specifically as shown in table 11:
Table 11: the up 4 antenna ports { code book (υ=1) of 0,1,2,3} transmission
Number of data layers is that the value of 2, m is 0,1,2,3,4,5,6,7, and the value of m ' is 0,1,2,3,4,5,6,7, and the value of n is 0,1, and pre-coding matrix quantity is 32 in the code book that generates, and is specifically as shown in table 12:
Table 12: the up 4 antenna ports { code book (υ=2) of 0,1,2,3} transmission
Number of data layers is that the value of 3, m is 0,1,2,3, and the value of m ' is 4,5,6,7, and the value of n is 0,1, and pre-coding matrix quantity is 16 in the code book that generates, and is specifically as shown in table 13:
Table 13: the uplink antenna port { code book (υ=3) of 0,1,2,3} transmission
Number of data layers is that the value of 4, m is 0,1,2,3, and the value of m ' is 4,5,6,7, and the value of n is 0,1, and pre-coding matrix quantity is 16 in the code book that generates, and is specifically as shown in table 14:
Table 14: the up 4 antenna ports { code book (υ=4) of 0,1,2,3} transmission
Code book index in the above table is pre-coding matrix index.
The data flow code word that uplink is supported is counted difference, and the transmission number of plies that uplink can be supported is also different, as to a code word, supports the transmission number of plies 1～2, for two code words, supports the transmission number of plies 2～4; Receiving terminal is according to mapping relations one to one between the transmission number of plies, pre-coding matrix index and the information field bit value set up in advance, the information field bit value that the index value of definite transmission number of plies of selecting and pre-coding matrix shines upon, wherein, can set up above-mentioned mapping relations respectively at a code word, two code words.
Under code word setting up in the present embodiment and two the code word situations, mapping relations are as shown in Table 15 one to one between the transmission number of plies, pre-coding matrix index and the information field bit value.Concrete mapping relations are not limited thereto, and can also adopt other mapping mode, as long as can unique indication transmit the number of plies, pre-coding matrix index.
Table 15: the content in precoding information territory
Wherein, the pre-coding matrix indication when TPMI is transmission is corresponding to the codewords indexes in table 11,12,13,14 code books.
It should be noted that in the table 10,15 content that each row under a code word or two the code word situations exchanges messages mutually, still in protection scope of the present invention.
Generally speaking, no matter which kind of concrete form the precoding information that sends adopts, have one-to-one relationship each capable the comprising with corresponding code book middle level 1 and layer 2 pre-coding matrix that needs only under the code word situation, each row under two code word situations and corresponding code book middle level 2, layers 3 and layer 4 pre-coding matrix one-to-one relationship is arranged, then can realize identical effect.
The embodiment of the invention also provides a kind of up recoding processing method, as shown in Figure 2, comprising:
Step S201, transmitting terminal receives the transmission number of plies and pre-coding matrix index indication information;
The transmission number of plies and pre-coding matrix index indication information that the up precoding indicating method that receiving terminal provides based on the above embodiment of the present invention sends, thus determine specifically to utilize which transmission number of plies and pre-coding matrix index to remove to select pre-coding matrix.
Step S202, transmitting terminal is selected the pre-coding matrix corresponding with the transmission number of plies that receives and pre-coding matrix index from up 4 antenna codebooks, wherein, up 4 antenna codebooks that transmitting terminal uses are identical with up 4 antenna codebooks that receiving terminal uses, concrete code book form no longer describes in detail here referring to the description of the above embodiment of the present invention;
Step S203, transmitting terminal use the pre-coding matrix of selecting that upstream data is carried out precoding processing.
How transmitting terminal adopts the pre-coding matrix of selection that upstream data is carried out precoding for existing process, no longer describes in detail here.
Transmitting terminal is evolution base station eNB in the embodiment of the invention, and receiving terminal is via node RN.Certainly, in similar other network equipment of all right application scenarios.
Based on same inventive concept, a kind of up precoding information indicating device and up pre-coding apparatus also are provided in the embodiment of the invention, because the principle of these device solves problems and a kind of up precoding information indicating means, up method for precoding are similar, therefore the enforcement of these devices can repeat part and repeat no more referring to the enforcement of method.
The up precoding information indicating device that the embodiment of the invention provides as shown in Figure 3, comprising:
Pre-coding matrix selected cell 301, be used for according to uplink channel information and definite transmission number of plies, from predetermined up 4 antenna codebooks, select a pre-coding matrix, wherein for the different transmission numbers of plies, the pre-coding matrix in up 4 antenna codebooks is determined by different default account forms with ratio parameter according to directioin parameter;
Pre-coding matrix indicating member 302 is used for sending the transmission number of plies and pre-coding matrix index indication information to transmitting terminal, uses the pre-coding matrix of selecting that upstream data is carried out precoding processing with the indication transmitting terminal.
A kind of up precoding processing device that the embodiment of the invention provides as shown in Figure 4, comprising:
Pre-coding matrix selected cell 402, be used for selecting the pre-coding matrix corresponding with the transmission number of plies that receives and pre-coding matrix index from up 4 antenna codebooks, wherein, up 4 antenna codebooks of pre-coding matrix selected cell use are identical with up 4 antenna codebooks that up precoding information indicating device uses;
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software embodiment or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (24)
1. a up precoding information indicating means is characterized in that, comprising:
Receiving terminal is according to uplink channel information and definite transmission number of plies, from predetermined up 4 antenna codebooks, select a pre-coding matrix, wherein, for the different transmission numbers of plies, pre-coding matrix in up 4 antenna codebooks determines that by different default account forms described directioin parameter is v with ratio parameter according to directioin parameter
m, v
M', described ratio parameter is
Wherein:
v
m＝[1?e
j2πm/M]
T
N, M are positive integer;
M, m', n are positive integer;
Send the transmission number of plies and pre-coding matrix index indication information to transmitting terminal, use the pre-coding matrix of selecting that upstream data is carried out precoding processing with the indication transmitting terminal.
2. the method for claim 1 is characterized in that,
Described N is 2 or 4, and described M is 32,16 or 8.
3. the method for claim 1 is characterized in that, for each transmission number of plies, the pre-coding matrix in up 4 antenna codebooks is determined in the following way according to directioin parameter and ratio parameter:
Every row of pre-coding matrix are made up of two parts up and down, and top is by v
m/ v
M'Composition, lower part are by v
m/ v
M'With
And the product of determining symbol is formed; Be multiplied by antenna factor at last again and obtain pre-coding matrix.
4. method as claimed in claim 3 is characterized in that, the transmission number of plies is 1 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
N
TThe expression number of transmit antennas.
5. method as claimed in claim 3 is characterized in that, the transmission number of plies is 2 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
N
TThe expression number of transmit antennas.
6. method as claimed in claim 3 is characterized in that, the transmission number of plies is 3 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
Or
N
TThe expression number of transmit antennas.
7. method as claimed in claim 3 is characterized in that, the transmission number of plies is 4 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
N
TThe expression number of transmit antennas.
8. as the arbitrary described method of claim 1～7, it is characterized in that, for each transmission number of plies, by determining m, m', the value of n is determined the quantity of pre-coding matrix in up 4 antenna codebooks.
9. method as claimed in claim 8 is characterized in that,
The transmission number of plies is 1 o'clock, and the value of m is 0,1,2,3,4,5,6,7, and the value of n is 0,1,2,3;
The transmission number of plies is 2 o'clock, and the value of m is 0,1,2,3,4,5,6,7, and the value of m' is 0,1,2,3,4,5,6,7, and the value of n is 0,1;
The transmission number of plies is 3 o'clock, and the value of m is 0,1,2,3, and the value of m' is 4,5,6,7, and the value of n is 0,1;
The transmission number of plies is 4 o'clock, and the value of m is 0,1,2,3, and the value of m' is 4,5,6,7, and the value of n is 0,1.
10. the method for claim 1 is characterized in that, receiving terminal specifically will transmit the number of plies and pre-coding matrix index, is mapped as unique information field bit value and indication to transmitting terminal.
11. method as claimed in claim 10, it is characterized in that, receiving terminal is according to mapping relations one to one between the transmission number of plies, pre-coding matrix index and the information field bit value set up in advance, determines to transmit the information field bit value that the number of plies and pre-coding matrix index shine upon.
12. a up recoding processing method is characterized in that, comprising:
Transmitting terminal receives the transmission number of plies and pre-coding matrix index indication information;
Transmitting terminal is selected the pre-coding matrix corresponding with the transmission number of plies that receives and pre-coding matrix index from up 4 antenna codebooks, wherein, up 4 antenna codebooks that transmitting terminal uses are identical with up 4 antenna codebooks that receiving terminal uses, for the different transmission numbers of plies, pre-coding matrix in up 4 antenna codebooks determines that by different default account forms described directioin parameter is v with ratio parameter according to directioin parameter
m, v
M', described ratio parameter is
Wherein:
v
m＝[1?e
j2πm/M]
T
N, M are positive integer;
M, m', n are positive integer;
Transmitting terminal uses the pre-coding matrix of selecting that upstream data is carried out precoding processing.
13. a up precoding information indicating device is characterized in that, comprising:
The pre-coding matrix selected cell, be used for according to uplink channel information and definite transmission number of plies, from predetermined up 4 antenna codebooks, select a pre-coding matrix, wherein, for the different transmission numbers of plies, pre-coding matrix in up 4 antenna codebooks determines that by different default account forms described directioin parameter is v with ratio parameter according to directioin parameter
m, v
M', described ratio parameter is
Wherein:
v
m＝[1?e
j2πm/M]
T
N, M are positive integer;
M, m', n are positive integer;
The pre-coding matrix indicating member is used for sending the transmission number of plies and pre-coding matrix index indication information to transmitting terminal, uses the pre-coding matrix of selecting that upstream data is carried out precoding processing with the indication transmitting terminal.
14. device as claimed in claim 13 is characterized in that, described N is 2 or 4, and described M is 32,16 or 8.
15. device as claimed in claim 13 is characterized in that, for each transmission number of plies, the pre-coding matrix in up 4 antenna codebooks is determined in the following way according to directioin parameter and ratio parameter:
Every row of pre-coding matrix are made up of two parts up and down, and top is by v
m/ v
M'Composition, lower part are by v
m/ v
M'With
And the product of determining symbol is formed; Be multiplied by antenna factor at last again and obtain pre-coding matrix.
16. device as claimed in claim 15 is characterized in that, the transmission number of plies is 1 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
N
TThe expression number of transmit antennas.
17. device as claimed in claim 15 is characterized in that, the transmission number of plies is 2 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
N
TThe expression number of transmit antennas.
18. device as claimed in claim 15 is characterized in that, the transmission number of plies is 3 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
N
TThe expression number of transmit antennas.
19. device as claimed in claim 15 is characterized in that, the transmission number of plies is 4 o'clock, and the pre-coding matrix of up 4 antenna codebooks is determined by following default account form:
N
TThe expression number of transmit antennas.
20. as the arbitrary described device of claim 13～19, it is characterized in that, for each transmission number of plies, by determining m, m', the value of n is determined the quantity of pre-coding matrix in up 4 antenna codebooks.
21. device as claimed in claim 20 is characterized in that,
The transmission number of plies is 1 o'clock, and the value of m is 0,1,2,3,4,5,6,7, and the value of n is 0,1,2,3;
The transmission number of plies is 2 o'clock, and the value of m is 0,1,2,3,4,5,6,7, and the value of m' is 0,1,2,3,4,5,6,7, and the value of n is 0,1;
The transmission number of plies is 3 o'clock, and the value of m is 0,1,2,3, and the value of m' is 4,5,6,7, and the value of n is 0,1;
The transmission number of plies is 4 o'clock, and the value of m is 0,1,2,3, and the value of m' is 4,5,6,7, and the value of n is 0,1.
22. device as claimed in claim 13 is characterized in that, the pre-coding matrix indicating member specifically will transmit the number of plies and pre-coding matrix index, be mapped as unique information field bit value and indication to transmitting terminal.
23. device as claimed in claim 22, it is characterized in that, the pre-coding matrix indicating member is according to mapping relations one to one between the transmission number of plies, pre-coding matrix index and the information field bit value set up in advance, determines to transmit the information field bit value that the number of plies and pre-coding matrix index shine upon.
24. a up precoding processing device is characterized in that, comprising:
The indication receiving element is used for receiving the transmission number of plies and pre-coding matrix index indication information;
The pre-coding matrix selected cell, be used for selecting the pre-coding matrix corresponding with the transmission number of plies that receives and pre-coding matrix index from up 4 antenna codebooks, wherein, up 4 antenna codebooks that the pre-coding matrix selected cell uses are identical with up 4 antenna codebooks that up precoding information indicating device uses, for the different transmission numbers of plies, pre-coding matrix in up 4 antenna codebooks determines that by different default account forms described directioin parameter is v with ratio parameter according to directioin parameter
m, v
M', described ratio parameter is
Wherein:
v
m＝[1?e
j2πm/M]
T
N, M are positive integer;
M, m', n are positive integer;
The precoding processing unit is used for using the pre-coding matrix of selecting that upstream data is carried out precoding processing.
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| CN106788875A (en) * | 2015-11-18 | 2017-05-31 | 电信科学技术研究院 | A kind of channel state information feedback method and device |
| EP3255811A1 (en) * | 2016-06-06 | 2017-12-13 | Alcatel Lucent | Apparatus, method, central unit and computer program for determining precoding information |
| US10749584B2 (en) * | 2016-12-22 | 2020-08-18 | Samsung Electronics Co., Ltd. | Uplink MIMO codebook for advanced wireless communication systems |
| WO2018196230A1 (en) * | 2017-04-25 | 2018-11-01 | 华为技术有限公司 | Uplink multi-antenna signal transmission method, related apparatus, and system |
| CN107612599A (en) * | 2017-08-04 | 2018-01-19 | 深圳市金立通信设备有限公司 | A kind of method, base station and user equipment for indicating frequency selectivity precoding information |
| CN109495143B (en) * | 2017-09-11 | 2021-12-24 | 大唐移动通信设备有限公司 | Method and equipment for sending and receiving precoding matrix |
| EP3758246A4 (en) | 2018-04-04 | 2021-03-03 | Huawei Technologies Co., Ltd. | Method and apparatus for selecting uplink antenna |
| CN111937319B (en) * | 2018-04-04 | 2022-04-26 | 华为技术有限公司 | Communication method, communication device and system |
| US20210211247A1 (en) * | 2018-05-22 | 2021-07-08 | Ntt Docomo, Inc. | Precoding method, decoding method, transmitting device and receiving device |
| CN115190631A (en) | 2019-01-11 | 2022-10-14 | 维沃移动通信有限公司 | Configuration method and transmission method of uplink channel, network side equipment and terminal |
| CN118054817A (en) * | 2019-01-11 | 2024-05-17 | 中兴通讯股份有限公司 | Implementation method of power control, communication node and storage medium |
| CN112653494A (en) * | 2019-10-09 | 2021-04-13 | 中兴通讯股份有限公司 | Optimization method of MU-MIMO beam overlapping, communication equipment and system |
| CN114584187A (en) * | 2020-11-30 | 2022-06-03 | 华为技术有限公司 | Data detection method and communication device |
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