CN103001745B - The Notification Method and device of feedback channel information matrix dimension - Google Patents
The Notification Method and device of feedback channel information matrix dimension Download PDFInfo
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- CN103001745B CN103001745B CN201110278348.3A CN201110278348A CN103001745B CN 103001745 B CN103001745 B CN 103001745B CN 201110278348 A CN201110278348 A CN 201110278348A CN 103001745 B CN103001745 B CN 103001745B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
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Abstract
The invention discloses a kind of Notification Method of feedback channel information matrix dimension, including：Sender notifies the matrix dimension that recipient should feed back with implicit and/or explicit way.The present invention discloses a kind of notice device for the feedback channel information matrix dimension for realizing the above method, described device includes：Notification unit, in sender, for notifying matrix dimension that recipient should feed back with implicit and/or explicit way.Channel information measurement of the channel information Notification Method of the present invention to support multiple users, allow the users of the different abilities feedback channel information matrix dimension under same channel measurement request frame, the feedback quality and feedback efficiency of channel information matrix dimension are improved, systematic function is improved.
Description
Technical field
The present invention relates to the notification technique of feedback channel information matrix dimension, more particularly to a kind of feedback channel information matrix
The Notification Method and device of dimension.
Background technology
WLAN (WLAN, Wireless Local Area Networks) is that the employing wireless communication technology will be counted
Calculate machine equipment interconnection to get up, composition can communicate and realize the network system of resource-sharing.The spy of WLAN essence
Point is not use communication cable to connect computer and network, but is wirelessly connected, so that network
Structure and terminal movement it is more flexible.Institute of Electrical and Electric Engineers (IEEE, Institute for Electrical
And Electronic Engineers) propose 802.11 related protocols be one of mainstream technology of current WLAN,
This agreement mainly defines physical layer (PHY) and media access control (MAC, Media Access Control) layer specification.With
The continuous improvement of the development and people of mobile communication technology to the demand of wireless network, physical layer specification is towards speed
Higher and higher direction is continued to develop, and be experienced 802.11 and is arrived 802.11a/g again to 802.11b, then 802.11n, is finally arrived
802.11ac development course.Actual physical technique also from direct sequence spread spectrum skill develop into OFDM (OFDM,
Orthogonal Frequency Division Multiplexing) technology, and introduced many days in IEEE802.11n
Line technology, introduces big bandwidth and multi-user's multiple-input and multiple-output (MU-MIMO, Multi-User in IEEE 802.11ac
Multiple Input Multiple Output) technology.
Fig. 1 be IEEE 802.11ac channel measurements frames or channel measurement request frame exchange process schematic diagram, as shown in figure 1,
Current IEEE802.11ac specifications regulation, when needing receiving terminal to transmitting terminal feedback channel information, transmitting terminal will send channel
(NDPA) frame and channel information measurement (NDP) frame are asked in information measurement, it is desirable to which the STA of NDPA STA information field corresponding address is anti-
Present channel information.Specific interaction detail can be found in the regulation in IEEE 802.11ac agreements, and its details is repeated no more here.
Fig. 2 is the NDP physical layer architecture schematic diagrames that have proposed in IEEE 802.11ac, as shown in Fig. 2 showing NDP current
Frame format in discussion, and limit NDP TXVECTOR values as：
- LENGTH (data length) is set as 0.
- NUM_USERS is set as 1.
- GROUP ID are set as 63 (complete 1).
- NUM_STS (space-time fluxion) empty time stream of two or more.
--- CH_BANDWIDTH is set as the TXVECTOR CH_BANDWIDTH identical values with NDPA.
And provide that NDP space-time fluxion Nsts can not be more than all users and can support the minimum value of maximum antenna number, for example
In the case of MU-MIMO, the maximum transmission antenna number of beam forming (Beamformer) that user 1 supports is 2, what user 1 supported
Beamformer maximum transmission antenna numbers are that 4, i.e. user 1 and user 2 support the minimum value of maximum antenna number to be 2, feedback letter
Road information needs the number of plies fed back transmission antenna and supported, but user 1 and user 2 are not aware that all users are supported
Minimum antenna number is, it is necessary to which how Nr determines during user feedback channel information under clearly such a scene, to support MU-MIMO to feed back
With MIMO processing.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of feedback channel information matrix dimension Notification Method and
Device, the channel information matrix dimension that beam forming recipient can be notified to feed back.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of Notification Method of feedback channel information matrix dimension, including：
Sender notifies the dimension of recipient's feedback channel information matrix with implicit and/or explicit way.
Preferably, the dimension of the channel information matrix is the line number of channel information matrix or the row of channel information matrix
Number and columns.
Preferably, described sender by channel measurement NDP frames or channel measurement request NDPA frames with implicit and/or
Explicit way notifies recipient to answer the line number or line number and columns of feedback channel information matrix.
Preferably, described sender notifies recipient to answer feedback channel information by NDP frames or NDPA frames with implicit
The line number or line number and columns of matrix, be：
Described sender is sent in the NDP frames of the recipient or NDPA frames answers feedback channel not comprising the recipient
The line number configured information or line number and columns configured information of information matrix.
Preferably, methods described also includes：
The recipient is received after the NDP frames or NDPA frames, to the row of described sender feedback channel information matrix
Number is the maximum transmission antenna number that can be supported in recipient's feedback channel information matrix or the transmission antenna of actual use
Number.
Preferably, methods described also includes：
The recipient is received after the NDP frames or NDPA frames, to the row of described sender feedback channel information matrix
Number is the space-time fluxion in currently received the NDP frames or NDPA frames.
Preferably, described sender notifies recipient to answer feedback channel information by NDP frames or NDPA frames with explicit way
The line number or line number and columns of matrix, be：
Described sender is sent in the NDP frames of the recipient or NDPA frames answers feedback channel to believe comprising the recipient
Cease the line number configured information or line number and columns configured information of matrix.
Preferably, the recipient answers the line number configured information of feedback channel information matrix to be carried in the pilot tone of NDP frames.
Preferably, the recipient answers the line number configured information of feedback channel information matrix in the VHT-SIG-A of NDP frames
Cell bit carrying.
Preferably, the recipient answers the line number configured information of feedback channel information matrix to be carried in NDPA frames.
Preferably, the recipient answers the line number configured information of feedback channel information matrix to be carried on the user in NDPA frames
In information field STA Info Field.
Preferably, the recipient answers the row configured information of feedback channel information matrix to be carried on the STA in NDPA frames
In Info Field, it is：
Bearing association identification information AID cell is set respectively in STA Info Field in NDPA frames, held
Carry feedback type information Feedback Type cell, the line number of channel information matrix and channel information matrix column number.
Described sender is sent in the NDP frames of the recipient or NDPA frames answers feedback channel to believe comprising the recipient
When ceasing the line number configured information or line number and columns configured information of matrix, methods described also includes：
The recipient is received after the NDP frames or NDPA frames, to described sender feedback channel information matrix column
Number is the space-time fluxion in currently received the NDP frames or NDPA frames.
A kind of notice device of feedback channel information matrix dimension, described device includes：
Notification unit, in sender, for notifying recipient to answer feedback channel with implicit and/or explicit way
The dimension of information matrix；Wherein, the dimension of the channel information matrix is the line number or channel information square of channel information matrix
The line number and columns of battle array.
Preferably, the notification unit is further used for, by NDP frames or NDPA frames with implicit and/or explicit side
Formula notifies recipient to answer the line number or line number and columns of feedback channel information matrix.
Preferably, the notification unit notifies not including the recipient in NDP frames or NDPA frames to the recipient
Answer the configured information or line number of the line number of feedback channel information matrix and the configured information of columns.
Preferably, described device also includes：
Feedback unit, for after the recipient receives the NDP frames or NDPA frames, to described sender feedback letter
The line number of road information matrix is the transmission antenna number of the maximum transmission antenna number that the recipient can be supported or actual use.
Preferably, described device also includes：
Feedback unit, for after the recipient receives the NDP frames or NDPA frames, to described sender feedback letter
The line number of road information matrix is the space-time fluxion in currently received the NDP frames or NDPA frames.
Preferably, the notification unit notifies that the recipient is included in NDP frames or NDPA frames to the recipient to be answered
The configured information or line number and the configured information of columns of the line number of feedback channel information matrix.
Preferably, described device also includes：
Load bearing unit, for recipient to be answered into the line number or line number of feedback channel information matrix and the configured information of columns
In the pilot tone for being carried on NDP frames.
Preferably, the load bearing unit carries described receive using the VHT-SIG-A cells and/or reservation bit of NDP frames
Answer the line number or line number of feedback channel information matrix and the configured information of columns in side.
Or, described device also includes：
Load bearing unit, for recipient to be answered into the line number or line number of feedback channel information matrix and the configured information of columns
It is carried on the STA Info Field in NDPA frames.
Preferably, described device also includes：
Bearing association identification information AID is set respectively in setting unit, the STA Info Field in NDPA frames
Cell, carrying feedback type information Feedback Type cell, carrying answer feedback channel information matrix line number cell
With the cell of the columns of Bearer Channel information matrix；
Acquired corresponding information correspondence is carried in each self-corresponding cell by the load bearing unit.
Preferably, should be anti-comprising the recipient in notification unit notifies NDP frames or NDPA frames to the recipient
When the configured information or line number and the configured information of columns of the line number for presenting channel information matrix, described device also includes：
Feedback unit, for after the recipient receives the NDP frames or NDPA frames, to described sender feedback letter
The columns of road information matrix is the space-time fluxion in currently received the NDP frames or NDPA frames.
In the present invention, beamforming transmission side notifies recipient to answer feedback channel information matrix in implicitly or explicitly mode
Dimension.Recipient is carried specifically, can be sent in sender in the channel measurement frame of recipient or channel measurement request frame
The configured information of the dimension of feedback channel information matrix is answered, recipient carries out channel information matrix dimension by the configured information of sender
Number feedback.Or, when sender be sent in the channel measurement frame of recipient or channel measurement request frame do not carry recipient should
During the configured information of the dimension of feedback channel information matrix, sent in the way of agreement to sender and answer feedback channel information matrix
Dimension, the maximum transmission antenna number that such as be can be supported to the line number of sender's feedback channel information matrix for recipient or reality
The transmission antenna number used, or to sender's feedback channel information matrix column number be the currently received channel measurement frame
Or the space-time fluxion in channel measurement request frame.The present invention is to realize recipient to answer feedback channel information by simple mode
The notice of the dimension of matrix, so that sender supports the transmission of MU-MIMO data according to the feedback transmission antenna number received.
Brief description of the drawings
Fig. 1 is IEEE 802.11ac channel measurements frames or channel measurement request frame exchange process schematic diagram；
Fig. 2 is the NDP physical layer architecture schematic diagrames that have proposed in IEEE 802.11ac；
Fig. 3 is the NDPA of present invention feedback information notice signaling structural representation；
Fig. 4 is another structural representation of the NDPA of present invention feedback information notice signaling；
Fig. 5 is the another structural representation of the NDPA of present invention feedback information notice signaling；
Fig. 6 is the composition structural representation of the notice device of feedback channel information matrix dimension of the present invention.
Embodiment
The present invention basic thought be：Beamforming transmission side notifies recipient to answer feedback channel in implicitly or explicitly mode
The dimension of information matrix.Specifically, can be sent in sender in the channel measurement frame of recipient or channel measurement request frame
The configured information that recipient answers the dimension of feedback channel information matrix is carried, recipient carries out channel by the configured information of sender
Information matrix dimension feeds back.Or, do not taken when sender is sent in the channel measurement frame of recipient or channel measurement request frame
When the configured information of dimension of feedback channel information matrix is answered with recipient, sent in the way of agreement to sender and answer feedback letter
The dimension of road information matrix, the maximum transmission day that such as be can be supported to the line number of sender's feedback channel information matrix for recipient
Line number or the transmission antenna number of actual use, or to sender's feedback channel information matrix column number described in currently received
Space-time fluxion in channel measurement frame or channel measurement request frame.The present invention is to realize recipient to answer anti-by simple mode
The notice of the dimension of channel information matrix is presented, so that sender supports MU-MIMO according to the feedback transmission antenna number received
The transmission of data.
To make the purpose of the present invention, technical scheme and advantage are more clearly understood, by the following examples and referring to the drawings, right
The present invention is further described.
Embodiment one
This example is to notify recipient to answer the example of the dimension of feedback channel information matrix with implicit.In this example,
Sender is sent to the instruction letter for not including the dimension that recipient answers feedback channel information matrix in the NDPA of recipient and NDP
Breath.So, after sender receives NDPA and NDP, the feedback of the dimension of channel information matrix is carried out with default behavior.Specifically
, default behavior is, the line number of antenna number, i.e. channel information matrix in the multiple antennas information of Wave beam forming recipient feedback
(Nr) the maximum transmission antenna number or the currently practical hair used that can be supported when, equal to the user feedback channel information matrix
Antennas number.So, for example in multiuser MIMO, the maximum transmission antenna numbers of Beamformer that user 1 supports are 2, and user 2
The maximum transmission antenna numbers of the Beamformer of support are 4, then the transmission antenna number difference of user 1 and the feedback channel matrixes of user 2
For 2 and 4.
Embodiment two
This example is to notify recipient to answer the example of the dimension of feedback channel information matrix with explicit way.In this example,
Sender is sent to the instruction letter that the dimension that recipient answers feedback channel information matrix is carried in the NDPA of recipient and NDP
Breath.
Notified to answer the line number of feedback channel information matrix, many days of Wave beam forming recipient feedback by Wave beam forming sender
Transmission antenna number in line information is the line number (Nr) of channel information matrix, and specific advice method is as follows：
NDP physical layer architecture is specifically as shown in Figure 2.The information that wherein NDP VHT-SIG-A is notified is answered including STA
The antenna number information of feedback is the line number (Nr) of channel information matrix, using bit B0-B2, because NDP bandwidth and NDPA phases
Together, thus the bandwidth in NDP can be represented bit B0-B1 (NDPA frames can also indicate that identical bandwidth information) and retain ratio
Special B2 joins together to represent to feed back the line number (Nr) of the i.e. channel information matrix of transmission antenna number of support.
Or, the information that NDP VHT-SIG-A is notified includes the antenna number information that STA should feed back, using bit B0-
B2, because NDP bandwidth is identical with NDPA, therefore can represent bandwidth bit B0-B1 and reservation bit B2, B3 and B23 connection
Represent that the transmission antenna information of support should be fed back altogether.
The antenna number information concrete meaning that above-mentioned STA should feed back is that the antenna that STA should feed back is indicated with three bits
Exemplified by number information, three bit configured information values are that 0 expression Nr is defined to 1 antenna, and value is that 1 expression Nr is defined to 2 antennas, is taken
It is worth and is defined to 3 antennas for 2 expression Nr, value is that 3 expression Nr are defined to 4 antennas, and value is that 4 expression Nr are defined to 5 antennas, value
6 antennas are defined to for 5 expression Nr, value is that 6 expression Nr are defined to 7 antennas, and value is that 7 expression Nr are defined to 8 antennas.
Embodiment three
This example is to notify recipient to answer the example of the dimension of feedback channel information matrix with explicit way.In this example,
Sender is sent to the instruction letter that the dimension that recipient answers feedback channel information matrix is carried in the NDPA of recipient and NDP
Breath.
Notified to answer the dimension of feedback channel information matrix, the channel of Wave beam forming recipient feedback by Wave beam forming sender
The line number (Nr) of information matrix, specific advice method is as follows：
User profile domain (STA Info Field) in 1.NDPA should include AID (association identity), feedback kind
(Feedback Type), it is desirable to the dimension Nc (channel information matrix column number) and Nr (antenna number, namely channel of feeding back antenna
The line number of information matrix), specifically as shown in Figure 3 or Figure 4.Bit number, which is respectively adopted, is：AID be 9 bits, the bit of feedback kind 1,
The dimension Nc of feedback channel information matrix uses 3 bits, and the dimension Nr of feedback channel information matrix uses 3 bits.
Or, AID is 12 bits, and the bit of feedback kind 1, the dimension Nc of feedback channel information matrix uses 3 bits, feedback
The dimension Nr of channel information matrix uses 3 bits.
Or, AID is 12 bits, and the bit of feedback kind 1, the dimension Nc of feedback channel information matrix uses 3 bits, feedback
The dimension Nr of channel information matrix is used and transmission antenna NTXThe mode of difference is indicated, is 2 bits.
User profile domain (STA Info Field) in 2.NDPA should include AID (association identity), feedback kind
(Feedback Type), it is desirable to the dimension Nc and Nr of the channel information matrix of feedback, as shown in figure 3 or 4.Bit is respectively adopted
Number is：AID is 9 bits, and feedback kind uses 1 bit, and the dimension Nc of feedback channel information matrix uses 4 bits, feedback channel
The dimension Nr of information matrix uses 3 bits.
Or, AID is 12 bits, and feedback kind is 1 bit, and the dimension Nr of feedback channel information matrix uses 3 bits, instead
The dimension Nc for presenting channel information matrix uses 3 bits.
Or, AID is 12 bits, and feedback kind is 1 bit, and the dimension Nr of feedback channel information matrix is used with sending day
Line NTXThe mode of difference, using 2 bits, the dimension Nc of feedback channel information matrix uses 3 bits.
The dimension Nr concrete meanings of the channel information matrix of above-mentioned requirements feedback are to indicate that STA is answered instead with three bits
Exemplified by the antenna number information of feedback, three bit configured information values are that 0 expression Nr is defined to 1 antenna, and value is that 1 expression Nr is defined to
2 antennas, value is that 2 expression Nr are defined to 3 antennas, and value is that 3 expression Nr are defined to 4 antennas, and value is that 4 expression Nr are defined to 5
Antenna, value is that 5 expression Nr are defined to 6 antennas, and value is that 6 expression Nr are defined to 7 antennas, and value is that 7 expression Nr are defined to 8 days
Line.
When the line number Nr of feedback channel information matrix is used and transmission antenna NTXWhen the mode of difference is to indicate, by Nc with
And corresponding differential relationship determines that beam forming recipient answers the dimension of feedback channel information matrix.
Example IV
This example is to notify recipient to answer the example of the dimension of feedback channel information matrix with implicit.In this example,
Sender is sent to the instruction letter for not including the dimension that recipient answers feedback channel information matrix in the NDPA of recipient and NDP
Breath.So, after sender receives NDPA and NDP, the feedback of antenna number is transmitted with default behavior.Specifically, for example,
Give tacit consent to the empty time stream that the transmission antenna number (Nr) in the multiple antennas information of Wave beam forming recipient feedback is equal in channel measurement frame
Number Nsts.Sender is received after NDPA and NDP, and the transmission line number that should be fed back is set to the space-time fluxion Nsts in NDP.
Embodiment five
This example is to notify recipient to answer the example of the dimension of feedback channel information matrix with explicit and implicit.Originally show
In example, sender, which is sent to, to be carried recipient and answers the line number of feedback channel information matrix to indicate in the NDPA of recipient and NDP
Information, channel information matrix column is several to be notified according to implicit.
Notified to answer the dimension of feedback channel information matrix, the channel of Wave beam forming recipient feedback by Wave beam forming sender
The line number (Nr) of information matrix, specific advice method is as follows：
User profile domain (STA Info Field) in NDPA should include AID (association identity), feedback kind
(Feedback Type), it is desirable to feeding back antenna dimension Nr (antenna number, namely channel information matrix line number), it is specific such as Fig. 5
It is shown.Bit number, which is respectively adopted, is：AID is 9 bits, and the bit of feedback kind 1, the dimension Nr of feedback channel information matrix uses 3
Bit.
Or, AID is 12 bits, and the bit of feedback kind 1, the dimension Nr of feedback channel information matrix uses 3 bits.
Or, AID is 12 bits, and the bit of feedback kind 1, the dimension Nr of feedback channel information matrix is used and transmission antenna
NTXThe mode of difference is indicated, is 2 bits.
Sender is sent in the NDPA of recipient and NDP answers feedback channel information matrix column number to refer to not comprising recipient
Show information.So, after sender receives NDPA and NDP, the feedback of channel information matrix columns is carried out with default behavior.Tool
Body, for example, the columns (Nc) in the channel information matrix of acquiescence Wave beam forming recipient's feedback is equal in channel measurement frame
Space-time fluxion Nsts.Sender is received after NDPA and NDP, and the columns that should be fed back is set to the space-time fluxion Nsts in NDP.
Embodiment six
This example is to notify recipient to answer the example of the dimension of feedback channel information matrix with explicit and implicit.Originally show
In example, sender, which is sent to, to be carried recipient and answers the line number of feedback channel information matrix to indicate in the NDPA of recipient and NDP
Information, channel information matrix column is several to be notified according to implicit.
Notified to answer the dimension of feedback channel information matrix, many days of Wave beam forming recipient feedback by Wave beam forming sender
Transmission antenna number in line information is the line number (Nr) of channel information matrix, and specific advice method is as follows：
NDP physical layer architecture is specifically as shown in Figure 2.The information that wherein NDP VHT-SIG-A is notified is answered including STA
The antenna number information of feedback is the line number (Nr) of channel information matrix, using bit B0-B2, because NDP bandwidth and NDPA phases
Together, thus the bandwidth in NDP can be represented bit B0-B1 (NDPA frames can also indicate that identical bandwidth information) and retain ratio
Special B2 joins together to represent to feed back the line number (Nr) of the i.e. channel information matrix of transmission antenna number of support.
Or, the information that NDP VHT-SIG-A is notified includes the antenna number information that STA should feed back, using bit B0-
B2, because NDP bandwidth is identical with NDPA, therefore can represent bandwidth bit B0-B1 and reservation bit B2, B3 and B23 connection
Represent that the transmission antenna information of support should be fed back altogether.
Sender is sent in the NDPA of recipient and NDP answers feedback channel information matrix column number to refer to not comprising recipient
Show information.So, after sender receives NDPA and NDP, the feedback of channel information matrix columns is carried out with default behavior.Tool
Body, for example, the columns (Nc) in the channel information matrix of acquiescence Wave beam forming recipient's feedback is equal in channel measurement frame
Space-time fluxion Nsts.Sender is received after NDPA and NDP, and the columns that should be fed back is set to the space-time fluxion Nsts in NDP.
By above-described embodiment, the invention provides a kind of dimension Notification Method of channel information matrix, by it is implicit and/
Or explicit mode notifies channel information matrix dimension feedback side, the channel information measurement to support multi-user, it is allowed to different
The user of ability feedback channel information matrix dimension under same channel measurement request frame, improves channel information matrix dimension
Feedback quality and feedback efficiency, improve systematic function.
The present invention also describes a kind of feedback letter for being used to realize the Notification Method of aforementioned feedback channel information matrix dimension
The notice device of road information matrix dimension, Fig. 6 is the composition structure of the notice device of feedback channel information matrix dimension of the present invention
Schematic diagram, as shown in fig. 6, the notice device of feedback channel information matrix dimension of the present invention includes：
Notification unit 60, in sender, for notifying recipient to answer feedback letter with implicit and/or explicit way
The dimension of road information matrix；Wherein, the dimension of the channel information matrix is the line number or channel information of channel information matrix
The line number and columns of matrix.
Above-mentioned notification unit 60 is further used for, by channel measurement frame or channel measurement request frame with implicit and/
Or explicit way notifies recipient to answer the line number or line number and columns of feedback channel information matrix.
Wherein, above-mentioned notification unit 60 notifies not wrap in channel measurement frame or channel measurement request frame to the recipient
The configured information or line number of the line number of feedback channel information matrix and the configured information of columns are answered containing the recipient.
On the basis of Fig. 6 is the notice device of feedback channel information matrix dimension of the present invention, feedback channel letter of the present invention
The notice device of breath matrix dimension also includes：
Feedback unit 61, for after the recipient receives the channel measurement frame or channel measurement request frame, to
The line number of described sender feedback channel information matrix is the maximum transmission antenna number or actually make that the recipient can be supported
Transmission antenna number.
Or, feedback unit 61, for receiving the channel measurement frame or channel measurement request frame in the recipient
Afterwards, the empty time stream in being currently received the NDP frames or NDPA frames to described sender feedback channel information matrix column number
Number.
Above-mentioned notification unit 60 is notified in channel measurement frame or channel measurement request frame to the recipient comprising described
Recipient answers the configured information or line number of the line number of feedback channel information matrix and the configured information of columns.
On the basis of Fig. 6 is the notice device of feedback channel information matrix dimension of the present invention, feedback channel letter of the present invention
The notice device of breath matrix dimension also includes：
Load bearing unit 62, for recipient to be answered to the line number or line number of feedback channel information matrix and the instruction letter of columns
Breath is carried in the pilot tone of NDP frames.
Above-mentioned load bearing unit 62 carries the recipient using the VHT-SIG-A cells and/or reservation bit of NDP frames should be anti-
Present the line number or line number and the configured information of columns of channel information matrix.
Or, load bearing unit 62, line number or line number and columns for recipient to be answered to feedback channel information matrix
Configured information is carried on the STA Info Field in NDPA frames.
On the basis of Fig. 6 is the notice device of feedback channel information matrix dimension of the present invention, feedback channel letter of the present invention
The notice device of breath matrix dimension also includes：
Set and hold respectively in setting unit (not shown in Fig. 6), setting unit, the STA Info Field in NDPA frames
The cell, carrying feedback type information Feedback Type cell, carrying for carrying association identification information AID answer feedback letter
The cell of the cell of the line number of road information matrix and the columns of Bearer Channel information matrix；
Acquired corresponding information correspondence is carried in each self-corresponding cell by the load bearing unit.
Art technology should be appreciated that notifies the channel measurement frame or channel to the recipient in foregoing notification unit 60
On the basis of answering the configured information of line number of feedback channel information matrix comprising the recipient in measurement request frame, the present invention is anti-
The notice device of feedback channel information matrix dimension also includes：Feedback unit 61, for receiving the NDP frames in the recipient
Or after NDPA frames, in being currently received the NDP frames or NDPA frames to described sender feedback channel information matrix column number
Space-time fluxion.
It will be appreciated by those skilled in the art that notifying for feedback channel information matrix dimension shown in Fig. 6 is each in device
Processing unit realizes that function can refer to the associated description of the Notification Method of aforementioned feedback channel information matrix dimension and understand.Figure
The function that frequency spectrum resource shown in 6 matches somebody with somebody each unit in device again can be realized by running on the program on processor, can also be led to
Cross specific logic circuit and realize.It will be appreciated by those skilled in the art that in addition to the notification unit 60 in figure, remaining each processing
Unit is to optimize the notice device of feedback channel information matrix dimension of the present invention and set, and is not intended to realize that the present invention is anti-
Present the necessary processing unit of the notice device of channel information matrix dimension.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (15)
1. a kind of Notification Method of feedback channel information matrix dimension, it is characterised in that methods described includes：
Sender notifies the dimension of recipient's feedback channel information matrix, the channel letter with implicit and/or explicit way
It is the line number of channel information matrix or the line number and columns of channel information matrix to cease the dimension of matrix；
Wherein, described sender is with implicit and/or explicitly square by channel measurement NDP frames or channel measurement request NDPA frames
Formula notifies recipient to answer the line number or line number and columns of feedback channel information matrix；
Wherein, described sender notifies recipient to answer feedback channel information matrix by NDP frames or NDPA frames with implicit
Line number or line number and columns, be：
Described sender is sent in the NDP frames of the recipient or NDPA frames answers feedback channel information not comprising the recipient
The line number configured information or line number and columns configured information of matrix；
Wherein, the recipient is received after the NDP frames or NDPA frames, to the row of described sender feedback channel information matrix
Number is the maximum transmission antenna number that can be supported in recipient's feedback channel information matrix or the transmission antenna of actual use
Number；
Or, the recipient is received after the NDP frames or NDPA frames, to the line number of described sender feedback channel information matrix
For the space-time fluxion in currently received the NDP frames or NDPA frames.
2. according to the method described in claim 1, it is characterised in that described sender is by NDP frames or NDPA frames with explicit side
Formula notifies recipient to answer the line number or line number and columns of feedback channel information matrix, is：
Described sender is sent in the NDP frames of the recipient or NDPA frames answers feedback channel information square comprising the recipient
The line number configured information or line number and columns configured information of battle array.
3. method according to claim 2, it is characterised in that the recipient answers the line number of feedback channel information matrix to refer to
Show that information is carried in the pilot tone of NDP frames.
4. method according to claim 3, it is characterised in that the recipient answers the line number of feedback channel information matrix to refer to
Show that information is carried by the cell bit in the VHT-SIG-A of NDP frames.
5. method according to claim 2, it is characterised in that the recipient answers the line number of feedback channel information matrix
Configured information is carried in NDPA frames.
6. method according to claim 2, it is characterised in that the recipient answers the line number of feedback channel information matrix to refer to
Show in the user profile domain STA Info Field that information is carried in NDPA frames.
7. method according to claim 6, it is characterised in that the recipient answers the row instruction of feedback channel information matrix
Information is carried in the STA Info Field in NDPA frames, is：
Set bearing association identification information AID cell, carrying anti-in STA Info Field in NDPA frames respectively
Present type information Feedback Type cell, the line number of channel information matrix and channel information matrix column number.
8. the method according to any one of claim 3 to 7, it is characterised in that methods described also includes：
The recipient is received after the NDP frames or NDPA frames, is to described sender feedback channel information matrix column number
Space-time fluxion in currently received the NDP frames or NDPA frames.
9. a kind of notice device of feedback channel information matrix dimension, it is characterised in that described device includes：
Notification unit, in sender, for notifying recipient to answer feedback channel information with implicit and/or explicit way
The dimension of matrix；Wherein, the dimension of the channel information matrix is the line number or channel information matrix of channel information matrix
Line number and columns,
Wherein, the notification unit is further used for, and is notified by NDP frames or NDPA frames with implicit and/or explicit way
Recipient answers the line number or line number and columns of feedback channel information matrix；
Wherein, the notification unit notifies that not including the recipient in NDP frames or NDPA frames to the recipient should feed back
The line number configured information or line number and the configured information of columns of channel information matrix；
Wherein, feedback unit, for after the recipient receives the NDP frames or NDPA frames, being fed back to described sender
The line number of channel information matrix is the transmission antenna number of the maximum transmission antenna number that the recipient can be supported or actual use；
Wherein, the feedback unit, is additionally operable to after the recipient receives the NDP frames or NDPA frames, is sent to described
The line number of square feedback channel information matrix is the space-time fluxion in currently received the NDP frames or NDPA frames.
10. device according to claim 9, it is characterised in that
The notification unit notifies in NDP frames or NDPA frames to the recipient to answer feedback channel information comprising the recipient
The configured information or line number and the configured information of columns of the line number of matrix.
11. device according to claim 10, it is characterised in that described device also includes：
Load bearing unit, for recipient to be answered to the line number or line number of feedback channel information matrix and the configured information carrying of columns
In the pilot tone of NDP frames.
12. device according to claim 11, it is characterised in that the load bearing unit is believed using the VHT-SIG-A of NDP frames
Member and/or reservation bit carry the recipient and answer the line number or line number of feedback channel information matrix and the instruction letter of columns
Breath.
13. device according to claim 10, it is characterised in that described device also includes：
Load bearing unit, for recipient to be answered to the line number or line number of feedback channel information matrix and the configured information carrying of columns
STA Info Field in NDPA frames.
14. device according to claim 13, it is characterised in that described device also includes：
Bearing association identification information AID letter is set respectively in setting unit, the STA Info Field in NDPA frames
First, carrying feedback type information Feedback Type cell, carrying are answered the cell of the line number of feedback channel information matrix and held
The cell of the columns of information carrying road information matrix；
Acquired corresponding information correspondence is carried in each self-corresponding cell by the load bearing unit.
15. the device according to any one of claim 10 to 14, it is characterised in that described device also includes：
Feedback unit, for after the recipient receives the NDP frames or NDPA frames, believing to described sender feedback channel
It is the space-time fluxion in currently received the NDP frames or NDPA frames to cease matrix column number.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110278348.3A CN103001745B (en) | 2011-09-19 | 2011-09-19 | The Notification Method and device of feedback channel information matrix dimension |
| PCT/CN2012/077741 WO2013040924A1 (en) | 2011-09-19 | 2012-06-28 | Notification method and device for feeding back channel information matrix dimensions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110278348.3A CN103001745B (en) | 2011-09-19 | 2011-09-19 | The Notification Method and device of feedback channel information matrix dimension |
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| CN103001745A CN103001745A (en) | 2013-03-27 |
| CN103001745B true CN103001745B (en) | 2017-10-13 |
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| CN201110278348.3A Active CN103001745B (en) | 2011-09-19 | 2011-09-19 | The Notification Method and device of feedback channel information matrix dimension |
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| WO (1) | WO2013040924A1 (en) |
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| CN117728872A (en) * | 2018-11-07 | 2024-03-19 | 华为技术有限公司 | Feedback method and device for channel state information |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142761A (en) * | 2005-01-21 | 2008-03-12 | 英特尔公司 | Mimo channel feedback protocols |
| CN101262264A (en) * | 2006-04-27 | 2008-09-10 | 索尼株式会社 | Wireless communication system, and wireless communication device and method |
| CN101326742A (en) * | 2006-04-27 | 2008-12-17 | 索尼株式会社 | Wireless communication method, wireless communication device and wireless communication system |
| CN101330479A (en) * | 2007-06-20 | 2008-12-24 | 中兴通讯股份有限公司 | Method for pre-encoding multi-input multi-output transmission and codebook encoding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7236748B2 (en) * | 2004-09-30 | 2007-06-26 | Intel Corporation | Closed loop feedback in MIMO systems |
| US8787841B2 (en) * | 2006-06-27 | 2014-07-22 | Qualcomm Incorporated | Method and system for providing beamforming feedback in wireless communication systems |
-
2011
- 2011-09-19 CN CN201110278348.3A patent/CN103001745B/en active Active
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142761A (en) * | 2005-01-21 | 2008-03-12 | 英特尔公司 | Mimo channel feedback protocols |
| CN101262264A (en) * | 2006-04-27 | 2008-09-10 | 索尼株式会社 | Wireless communication system, and wireless communication device and method |
| CN101326742A (en) * | 2006-04-27 | 2008-12-17 | 索尼株式会社 | Wireless communication method, wireless communication device and wireless communication system |
| CN101330479A (en) * | 2007-06-20 | 2008-12-24 | 中兴通讯股份有限公司 | Method for pre-encoding multi-input multi-output transmission and codebook encoding |
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| WO2013040924A1 (en) | 2013-03-28 |
| CN103001745A (en) | 2013-03-27 |
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