CN103001745A - Notification method and notification device for feeding matrix size of channel information - Google Patents

Notification method and notification device for feeding matrix size of channel information Download PDF

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Publication number
CN103001745A
CN103001745A CN2011102783483A CN201110278348A CN103001745A CN 103001745 A CN103001745 A CN 103001745A CN 2011102783483 A CN2011102783483 A CN 2011102783483A CN 201110278348 A CN201110278348 A CN 201110278348A CN 103001745 A CN103001745 A CN 103001745A
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Prior art keywords
channel information
information matrix
line number
recipient
feedback channel
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CN103001745B (en
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姜静
吕开颖
孙波
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2012/077741 priority patent/WO2013040924A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—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

Abstract

The invention discloses a notification method for feeding matrix size of channel information. The notification method includes that a sender notifies a receiver about the required feedback matrix size in an implicit manner and/or display manner. The invention further discloses a notification device for feeding matrix size of channel information. The notification device comprises a notification unit set in the sender and used for notifying the receiver about the required feedback matrix size in an implicit manner and/or display manner. The notification method is used for supporting measurement of channel information of multiple users and allowing users of different capacities to feed back the matrix size of the channel information on the condition of the same channel measurement request frame, and accordingly feedback quality and efficiency of the matrix size of the channel information are improved and system performance is improved.

Description

The Notification Method of feedback channel information matrix dimension and device
Technical field
The present invention relates to the notification technique of feedback channel information matrix dimension, relate in particular to a kind of Notification Method and device of feedback channel information matrix dimension.
Background technology
WLAN (WLAN, Wireless Local Area Networks) is that the employing wireless communication technology is interconnected with computer equipment, and the network system of resource-sharing can be communicated by letter mutually and realize to formation.The characteristics of WLAN (wireless local area network) essence are not re-use telecommunication cable computer and network is coupled together, but connect by wireless mode, thereby make the movement of the structure of network and terminal more flexible.Institute of Electrical and Electric Engineers (IEEE, Institute for Electrical and Electronic Engineers) 802.11 related protocols that propose are one of mainstream technologys of present WLAN (wireless local area network), this agreement has mainly been stipulated physical layer (PHY) and media interviews controls (MAC, MediaAccess Contro1) layer standard.Along with the development of mobile communication technology and people improving constantly the demand of wireless network, physical layer specification is towards the more and more higher direction development of speed, experienced 802.11 and arrived 802.11a/g to 802.11b again, 802.11n then arrives the development course of 802.11ac at last.Actual physical technique also develops into OFDM (OFDM from direct sequence spread spectrum skill, Orthogonal Frequency Division Multiplexing) technology, and in IEEE802.11n, introduced multi-antenna technology, in IEEE 802.11ac, introduce large bandwidth and multi-user's multiple-input and multiple-output (MU-MIMO, Multi-User Multiple Input Multiple Output) technology.
Fig. 1 is IEEE 802.11ac channel measurement frame or channel measurement request frame exchange process schematic diagram, as shown in Figure 1, current I EEE802.11ac regulation and stipulation, when needs receiving terminal during to the transmitting terminal feedback channel information, transmitting terminal is measured request (NDPA) frame and channel information measurement (NDP) frame with channel information, requires the STA feedback channel information of the STA information field corresponding address of NDPA.Concrete interaction detail can referring to the regulation in the IEEE 802.11ac agreement, repeat no more its details here.Fig. 2 is the NDP physical layer architecture schematic diagram that has proposed among the IEEE 802.11ac, as shown in Figure 2, shows NDP in present in question frame format, and the TXVECTOR value of restriction NDP is:
-LENGTH (data length) is set as 0.
-NUM_USERS is set as 1.
-GROUP ID is set as 63 (complete 1).
Stream when two of-NUM_STS (fluxion during sky) or more sky.
---CH_BANDWIDTH is set as the value identical with the TXVECTOR CH_BANDWIDTH of NDPA.
And fluxion Nsts can not can support greater than all users the minimum value of maximum antenna number during regulation NDP empty, for example in the MU-MIMO situation, the maximum number of transmit antennas of beam forming (Beamformer) that user 1 supports is 2, the maximum number of transmit antennas of the Beamformer that user 1 supports is 4, the minimum value that is user 1 and the user 2 maximum antenna number of supporting is 2, the number of plies that feedback channel information need to feed back transmitting antenna and support, but user 1 and user 2 also do not know the supported minimum antenna number of all users, Nr how to confirm when needing under clear and definite this kind scene the user feedback channel information is in order to support MU-MIMO feedback and MIMO processing.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of Notification Method and device of feedback channel information matrix dimension, the channel information matrix dimension that can notify the beam forming recipient to feed back.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of Notification Method of feedback channel information matrix dimension comprises:
Transmit leg is notified the dimension of recipient's feedback channel information matrix with implicit and/or display mode.
Preferably, the dimension of described channel information matrix is the line number of channel information matrix or line number and the columns of channel information matrix.
Preferably, described transmit leg line number or line number and the columns of notifying the recipient to answer the feedback channel information matrix with implicit and/or display mode by channel measurement NDP frame or channel measurement request NDPA frame.
Preferably, line number or line number and columns that described transmit leg notifies the recipient to answer the feedback channel information matrix by NDP frame or NDPA frame with implicit, for:
Described transmit leg sends in described recipient's NDP frame or the NDPA frame and does not comprise line number or line number and the columns indication information that described recipient answers the feedback channel information matrix.
Preferably, described method also comprises:
After described recipient receives described NDP frame or NDPA frame, be maximum number of transmit antennas or the actual number of transmit antennas of using that to support in described recipient's feedback channel information matrix to the line number of described transmit leg feedback channel information matrix.
Preferably, described method also comprises:
After described recipient receives described NDP frame or NDPA frame, to the line number of described transmit leg feedback channel information matrix fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
Preferably, line number or line number and columns that described transmit leg notifies the recipient to answer the feedback channel information matrix by NDP frame or NDPA frame with explicit way, for:
Described transmit leg sends in described recipient's NDP frame or the NDPA frame and comprises line number or line number and the columns indication information that described recipient answers the feedback channel information matrix.
Preferably, described recipient answers the line number indication information of feedback channel information matrix to be carried in the pilot tone of NDP frame.
Preferably, described recipient answers the line number indication information of feedback channel information matrix to be carried by the cell bit among the VHT-SIG-A of NDP frame.
Preferably, described recipient answers the line number indication information of feedback channel information matrix to be carried in the NDPA frame.
Preferably, described recipient answers the line number indication information of feedback channel information matrix to be carried among the user profile territory STA Info Field in the NDPA frame.
Preferably, described recipient answers the capable indication information of feedback channel information matrix to be carried among the STA Info Field in the NDPA frame, for:
The cell of bearing association identification information AID, the cell of carrying feedback kind information Feedback Type, line number and the channel information matrix column number of channel information matrix are set respectively among the STA Info Field in the NDPA frame.
When described transmit leg sent to and comprises described recipient in described recipient's NDP frame or the NDPA frame and answer the line number of feedback channel information matrix or line number and columns indication information, described method also comprised:
After described recipient receives described NDP frame or NDPA frame, to described transmit leg feedback channel information matrix column number fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
A kind of notifying device of feedback channel information matrix dimension, described device comprises:
Notification unit is arranged in transmit leg, is used for notifying the recipient to answer the dimension of feedback channel information matrix with implicit and/or display mode; Wherein, the dimension of described channel information matrix is the line number of channel information matrix or line number and the columns of channel information matrix.
Preferably, described notification unit is further used for, line number or line number and the columns of notifying the recipient to answer the feedback channel information matrix with implicit and/or display mode by NDP frame or NDPA frame.
Preferably, described notification unit is not notified to not comprising described recipient in described recipient's NDP frame or the NDPA frame and is answered the line number of feedback channel information matrix or the indication information of line number and columns.
Preferably, described device also comprises:
Feedback unit is used for after described recipient receives described NDP frame or NDPA frame, is the maximum number of transmit antennas that can support of described recipient or the number of transmit antennas of reality use to the line number of described transmit leg feedback channel information matrix.
Preferably, described device also comprises:
Feedback unit is used for after described recipient receives described NDP frame or NDPA frame, to the line number of described transmit leg feedback channel information matrix fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
Preferably, described notification unit is notified to comprising described recipient in described recipient's NDP frame or the NDPA frame and is answered the line number of feedback channel information matrix or the indication information of line number and columns.
Preferably, described device also comprises:
Load bearing unit is used for answering the indication information of the line number of feedback channel information matrix or line number and columns to be carried on the pilot tone of NDP frame the recipient.
Preferably, described load bearing unit uses the VHT-SIG-A cell of NDP frame and/or reservation bit to carry described recipient and answers the line number of feedback channel information matrix or the indication information of line number and columns.
Perhaps, described device also comprises:
Load bearing unit is used for answering the indication information of the line number of feedback channel information matrix or line number and columns to be carried on the STA Info Field of NDPA frame the recipient.
Preferably, described device also comprises:
Setting unit arranges respectively the cell of the columns of the cell of the cell of cell, the carrying feedback kind information Feedback Type of bearing association identification information AID, line number that the feedback channel information matrix is answered in carrying and Bearer Channel information matrix among the STA Info Field in the NDPA frame;
Described load bearing unit is carried on the corresponding information correspondence of obtaining in each self-corresponding cell.
Preferably, when comprising described recipient answering the indication information of the line number of feedback channel information matrix or line number and columns in notification unit is notified to described recipient's NDP frame or NDPA frame, described device also comprises:
Feedback unit is used for after described recipient receives described NDP frame or NDPA frame, to described transmit leg feedback channel information matrix column number fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
Among the present invention, the beam forming transmit leg notifies the recipient to answer the dimension of feedback channel information matrix with implicit expression or display mode.Concrete, can send in recipient's channel measurement frame or the channel measurement request frame at transmit leg and carry the indication information that the recipient answers the dimension of feedback channel information matrix, the recipient carries out channel information matrix dimension feedback by the indication information of transmit leg.Perhaps, when transmit leg sends to the indication information that does not carry the dimension that the recipient answers the feedback channel information matrix in recipient's channel measurement frame or the channel measurement request frame, mode with agreement sends the dimension of answering the feedback channel information matrix to transmit leg, be the maximum number of transmit antennas that can support of recipient or the actual number of transmit antennas of using such as the line number to transmit leg feedback channel information matrix, perhaps to transmit leg feedback channel information matrix column number fluxion during by empty in current the described channel measurement frame of reception or the channel measurement request frame.The present invention has realized namely that by simple mode the recipient answers the notice of the dimension of feedback channel information matrix, thereby transmit leg is supported the transmission of MU-MIMO data according to the feedback number of transmit antennas that receives.
Description of drawings
Fig. 1 is IEEE 802.11ac channel measurement frame or channel measurement request frame exchange process schematic diagram;
Fig. 2 is the NDP physical layer architecture schematic diagram that has proposed among the IEEE 802.11ac;
Fig. 3 is the feedback information notice signaling structural representation of NDPA of the present invention;
Fig. 4 is another structural representation of the feedback information notice signaling of NDPA of the present invention;
Fig. 5 is the another structural representation of the feedback information notice signaling of NDPA of the present invention;
Fig. 6 is the composition structural representation of the notifying device of feedback channel information matrix dimension of the present invention.
Embodiment
Basic thought of the present invention is: the beam forming transmit leg notifies the recipient to answer the dimension of feedback channel information matrix with implicit expression or display mode.Concrete, can send in recipient's channel measurement frame or the channel measurement request frame at transmit leg and carry the indication information that the recipient answers the dimension of feedback channel information matrix, the recipient carries out channel information matrix dimension feedback by the indication information of transmit leg.Perhaps, when transmit leg sends to the indication information that does not carry the dimension that the recipient answers the feedback channel information matrix in recipient's channel measurement frame or the channel measurement request frame, mode with agreement sends the dimension of answering the feedback channel information matrix to transmit leg, be the maximum number of transmit antennas that can support of recipient or the actual number of transmit antennas of using such as the line number to transmit leg feedback channel information matrix, perhaps to transmit leg feedback channel information matrix column number fluxion during by empty in current the described channel measurement frame of reception or the channel measurement request frame.The present invention has realized namely that by simple mode the recipient answers the notice of the dimension of feedback channel information matrix, thereby transmit leg is supported the transmission of MU-MIMO data according to the feedback number of transmit antennas that receives.
For making purpose of the present invention, technical scheme and advantage are clearer, and by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Embodiment one
This example is to notify the recipient to answer the example of the dimension of feedback channel information matrix with implicit.In this example, transmit leg sends among recipient's NDPA and the NDP and does not comprise the indication information that the recipient answers the dimension of feedback channel information matrix.Like this, after transmit leg receives NDPA and NDP, carry out the feedback of the dimension of channel information matrix in the acquiescence mode.Concrete, the acquiescence mode is, antenna number in many aerial informations of wave beam formation recipient feedback, the i.e. line number of channel information matrix (Nr), the maximum number of transmit antennas that can support when equaling this user feedback channel information matrix or the current actual number of transmit antennas of using.Like this, for example when multiuser MIMO, the maximum number of transmit antennas of the Beamformer that user 1 supports is 2, and the maximum number of transmit antennas of the Beamformer that user 2 supports is 4, and then the number of transmit antennas of user 1 and user's 2 feedback channel matrixes is respectively 2 and 4.
Embodiment two
This example is to notify the recipient to answer the example of the dimension of feedback channel information matrix with explicit way.In this example, transmit leg sends among recipient's NDPA and the NDP and carries the indication information that the recipient answers the dimension of feedback channel information matrix.
Form the line number that the transmit leg notice is answered the feedback channel information matrix by wave beam, the number of transmit antennas in many aerial informations of wave beam formation recipient feedback is the line number (Nr) of channel information matrix, and concrete advice method is as follows:
The physical layer architecture of NDP specifically as shown in Figure 2.Wherein the information of the VHT-SIG-A of NDP notice comprises that the antenna number information that STA should feed back is the line number (Nr) of channel information matrix, adopt bit B0-B2, therefore because the bandwidth of NDP is identical with NDPA, the bandwidth among the NDP can be represented that the number of transmit antennas that bit B0-B1 (the NDPA frame also can be indicated identical bandwidth information) and reservation bit B2 join together to represent to feed back support is the line number (Nr) of channel information matrix.
Perhaps, the information of the VHT-SIG-A notice of NDP comprises the antenna number information that STA should feed back, adopt bit B0-B2, because the bandwidth of NDP is identical with NDPA, therefore bandwidth can be represented bit B0-B1 and reservation bit B2, B3 and B23 join together to represent to feed back the transmitting antenna information of support.
The antenna number information concrete meaning that above-mentioned STA should feed back is, indicate antenna number information that STA should feed back as example take three bits, three bit indication information values are that 0 expression Nr is defined as 1 antenna, value is that 1 expression Nr is defined as 2 antennas, and value is that 2 expression Nr are defined as 3 antennas, and value is that 3 expression Nr are defined as 4 antennas, value is that 4 expression Nr are defined as 5 antennas, value is that 5 expression Nr are defined as 6 antennas, and value is that 6 expression Nr are defined as 7 antennas, and value is that 7 expression Nr are defined as 8 antennas.
Embodiment three
This example is to notify the recipient to answer the example of the dimension of feedback channel information matrix with explicit way.In this example, transmit leg sends among recipient's NDPA and the NDP and carries the indication information that the recipient answers the dimension of feedback channel information matrix.
Form the dimension that the transmit leg notice is answered the feedback channel information matrix by wave beam, wave beam forms the line number (Nr) of the channel information matrix of recipient's feedback, and concrete advice method is as follows:
1.NDPA in user profile territory (STA Info Field) should comprise AID (related identify label), feedback kind (Feedback Type), require dimension Nc (channel information matrix column number) and the Nr (antenna number of feeding back antenna, also be the line number of channel information matrix), concrete such as Fig. 3 or shown in Figure 4.Adopt respectively bit number to be: AID is 9 bits, feedback kind 1 bit, and the dimension Nc of feedback channel information matrix uses 3 bits, and the dimension Nr of feedback channel information matrix uses 3 bits.
Perhaps, AID is 12 bits, feedback kind 1 bit, and the dimension Nc of feedback channel information matrix uses 3 bits, and the dimension Nr of feedback channel information matrix uses 3 bits.
Perhaps, AID is 12 bits, feedback kind 1 bit, and the dimension Nc of feedback channel information matrix uses 3 bits, and the dimension Nr of feedback channel information matrix adopts and transmitting antenna N TXThe mode of difference is indicated, and is 2 bits.
2.NDPA in user profile territory (STA Info Field) should comprise AID (related identify label), feedback kind (Feedback Type) requires dimension Nc and the Nr of the channel information matrix of feedback, shown in Fig. 3 or 4.Adopt respectively bit number to be: AID is 9 bits, and feedback kind is used 1 bit, and the dimension Nc of feedback channel information matrix uses 4 bits, and the dimension Nr of feedback channel information matrix uses 3 bits.
Perhaps, AID is 12 bits, and feedback kind is 1 bit, and the dimension Nr of feedback channel information matrix uses 3 bits, and the dimension Nc of feedback channel information matrix uses 3 bits.
Perhaps, AID is 12 bits, and feedback kind is 1 bit, and the dimension Nr of feedback channel information matrix adopts and transmitting antenna N TXThe mode of difference is used 2 bits, and the dimension Nc of feedback channel information matrix uses 3 bits.
The dimension Nr concrete meaning of the channel information matrix of above-mentioned requirements feedback is, indicate antenna number information that STA should feed back as example take three bits, three bit indication information values are that 0 expression Nr is defined as 1 antenna, value is that 1 expression Nr is defined as 2 antennas, value is that 2 expression Nr are defined as 3 antennas, value is that 3 expression Nr are defined as 4 antennas, value is that 4 expression Nr are defined as 5 antennas, value is that 5 expression Nr are defined as 6 antennas, value is that 6 expression Nr are defined as 7 antennas, and value is that 7 expression Nr are defined as 8 antennas.
When the line number Nr of feedback channel information matrix adopts and transmitting antenna N TXWhen the mode of difference is indicated, concern to determine that by Nc and corresponding difference the beam forming recipient answers the dimension of feedback channel information matrix to get final product.
Embodiment four
This example is to notify the recipient to answer the example of the dimension of feedback channel information matrix with implicit.In this example, transmit leg sends among recipient's NDPA and the NDP and does not comprise the indication information that the recipient answers the dimension of feedback channel information matrix.Like this, after transmit leg receives NDPA and NDP, carry out the feedback of number of transmit antennas in the acquiescence mode.Concrete, for example, fluxion Nsts when the acquiescence wave beam forms number of transmit antennas (Nr) in many aerial informations of recipient's feedback and equals empty in the channel measurement frame.After transmit leg receives NDPA and NDP, fluxion Nsts when the transmission line number that should feed back is set to empty among the NDP.
Embodiment five
This example is to notify the recipient to answer the example of the dimension of feedback channel information matrix with explicit and implicit.In this example, transmit leg sends among recipient's NDPA and the NDP and carries the line number indication information that the recipient answers the feedback channel information matrix, and the channel information matrix column is several to be notified according to implicit.
Form the dimension that the transmit leg notice is answered the feedback channel information matrix by wave beam, wave beam forms the line number (Nr) of the channel information matrix of recipient's feedback, and concrete advice method is as follows:
(STA Info Field) should comprise AID (related identify label) in user profile territory among the NDPA, feedback kind (Feedback Type), require the dimension Nr (antenna number also is the line number of channel information matrix) of feeding back antenna, specifically as shown in Figure 5.Adopt respectively bit number to be: AID is 9 bits, feedback kind 1 bit, and the dimension Nr of feedback channel information matrix uses 3 bits.
Perhaps, AID is 12 bits, feedback kind 1 bit, and the dimension Nr of feedback channel information matrix uses 3 bits.
Perhaps, AID is 12 bits, feedback kind 1 bit, and the dimension Nr of feedback channel information matrix adopts and transmitting antenna N TXThe mode of difference is indicated, and is 2 bits.
Transmit leg sends to and does not comprise the recipient among recipient's NDPA and the NDP and answer the feedback channel information matrix column to count indication information.Like this, after transmit leg receives NDPA and NDP, carry out the feedback of channel information matrix columns in the acquiescence mode.Concrete, for example, fluxion Nsts when the acquiescence wave beam forms columns (Nc) in the channel information matrix of recipient's feedback and equals empty in the channel measurement frame.After transmit leg receives NDPA and NDP, fluxion Nsts when the columns that should feed back is set to empty among the NDP.
Embodiment six
This example is to notify the recipient to answer the example of the dimension of feedback channel information matrix with explicit and implicit.In this example, transmit leg sends among recipient's NDPA and the NDP and carries the line number indication information that the recipient answers the feedback channel information matrix, and the channel information matrix column is several to be notified according to implicit.
Form the dimension that the transmit leg notice is answered the feedback channel information matrix by wave beam, the number of transmit antennas in many aerial informations of wave beam formation recipient feedback is the line number (Nr) of channel information matrix, and concrete advice method is as follows:
The physical layer architecture of NDP specifically as shown in Figure 2.Wherein the information of the VHT-SIG-A of NDP notice comprises that the antenna number information that STA should feed back is the line number (Nr) of channel information matrix, adopt bit B0-B2, therefore because the bandwidth of NDP is identical with NDPA, the bandwidth among the NDP can be represented that the number of transmit antennas that bit B0-B1 (the NDPA frame also can be indicated identical bandwidth information) and reservation bit B2 join together to represent to feed back support is the line number (Nr) of channel information matrix.
Perhaps, the information of the VHT-SIG-A notice of NDP comprises the antenna number information that STA should feed back, adopt bit B0-B2, because the bandwidth of NDP is identical with NDPA, therefore bandwidth can be represented bit B0-B1 and reservation bit B2, B3 and B23 join together to represent to feed back the transmitting antenna information of support.
Transmit leg sends to and does not comprise the recipient among recipient's NDPA and the NDP and answer the feedback channel information matrix column to count indication information.Like this, after transmit leg receives NDPA and NDP, carry out the feedback of channel information matrix columns in the acquiescence mode.Concrete, for example, fluxion Nsts when the acquiescence wave beam forms columns (Nc) in the channel information matrix of recipient's feedback and equals empty in the channel measurement frame.After transmit leg receives NDPA and NDP, fluxion Nsts when the columns that should feed back is set to empty among the NDP.
Pass through above-described embodiment, the invention provides a kind of dimension Notification Method of channel information matrix, by implicit expression and/or explicit mode notification channel information matrix dimension feedback side, in order to support multi-user's channel information measurement, allow user's feedback channel information matrix dimension under same channel measurement request frame of different abilities, improve feedback quality and the feedback efficiency of channel information matrix dimension, improved systematic function.
The present invention has also put down in writing a kind of notifying device of feedback channel information matrix dimension of the Notification Method be used to realizing aforementioned feedback channel information matrix dimension, Fig. 6 is the composition structural representation of the notifying device of feedback channel information matrix dimension of the present invention, as shown in Figure 6, the notifying device of feedback channel information matrix dimension of the present invention comprises:
Notification unit 60 is arranged in transmit leg, is used for notifying the recipient to answer the dimension of feedback channel information matrix with implicit and/or display mode; Wherein, the dimension of described channel information matrix is the line number of channel information matrix or line number and the columns of channel information matrix.
Above-mentioned notification unit 60 is further used for, line number or line number and the columns of notifying the recipient to answer the feedback channel information matrix with implicit and/or display mode by channel measurement frame or channel measurement request frame.
Wherein, above-mentioned notification unit 60 notices are not answered the line number of feedback channel information matrix or the indication information of line number and columns to not comprising described recipient in described recipient's channel measurement frame or the channel measurement request frame.
Be that the notifying device of feedback channel information matrix dimension of the present invention also comprises on the basis of notifying device of feedback channel information matrix dimension of the present invention at Fig. 6:
Feedback unit 61, being used for after described recipient receives described channel measurement frame or channel measurement request frame, is the maximum number of transmit antennas that can support of described recipient or the number of transmit antennas of reality use to the line number of described transmit leg feedback channel information matrix.
Perhaps, feedback unit 61 is used for after described recipient receives described channel measurement frame or channel measurement request frame, to described transmit leg feedback channel information matrix column number fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
Above-mentioned notification unit 60 is notified to comprising described recipient in described recipient's channel measurement frame or the channel measurement request frame and is answered the line number of feedback channel information matrix or the indication information of line number and columns.
Be that the notifying device of feedback channel information matrix dimension of the present invention also comprises on the basis of notifying device of feedback channel information matrix dimension of the present invention at Fig. 6:
Load bearing unit 62 is used for answering the indication information of the line number of feedback channel information matrix or line number and columns to be carried on the pilot tone of NDP frame the recipient.
The VHT-SIG-A cell of above-mentioned load bearing unit 62 use NDP frames and/or reservation bit carry described recipient answers the line number of feedback channel information matrix or the indication information of line number and columns.
Perhaps, load bearing unit 62 is used for answering the indication information of the line number of feedback channel information matrix or line number and columns to be carried on the STA Info Field of NDPA frame the recipient.
Be that the notifying device of feedback channel information matrix dimension of the present invention also comprises on the basis of notifying device of feedback channel information matrix dimension of the present invention at Fig. 6:
Setting unit (not shown among Fig. 6), setting unit arranges respectively the cell of the columns of the cell of the cell of cell, the carrying feedback kind information Feedback Type of bearing association identification information AID, line number that the feedback channel information matrix is answered in carrying and Bearer Channel information matrix among the STA Info Field in the NDPA frame;
Described load bearing unit is carried on the corresponding information correspondence of obtaining in each self-corresponding cell.
Art technology is to be understood that, comprise in to described recipient's channel measurement frame or channel measurement request frame on the basis of indication information of line number that described recipient answers the feedback channel information matrix in aforementioned notification unit 60 notices, the notifying device of feedback channel information matrix dimension of the present invention also comprises: feedback unit 61, be used for after described recipient receives described NDP frame or NDPA frame, to described transmit leg feedback channel information matrix column number fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
The practical function that it will be appreciated by those skilled in the art that the each processing unit in the notifying device of feedback channel information matrix dimension shown in Figure 6 can be with reference to the associated description of the Notification Method of aforementioned feedback channel information matrix dimension and is understood.The function of each unit can realize by the program that runs on the processor in the frequency spectrum resource reprovision device shown in Figure 6, also can realize by concrete logical circuit.Those skilled in the art are to be understood that, the notification unit 60 in figure, all the other each processing units are the notifying device of optimizing feedback channel information matrix dimension of the present invention and arrange, and are not the necessary processing unit for the notifying device of realizing feedback channel information matrix dimension of the present invention.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.

Claims (24)

1. the Notification Method of a feedback channel information matrix dimension is characterized in that, described method comprises:
Transmit leg is notified the dimension of recipient's feedback channel information matrix with implicit and/or display mode.
2. method according to claim 1 is characterized in that, the dimension of described channel information matrix is the line number of channel information matrix or line number and the columns of channel information matrix.
3. method according to claim 2 is characterized in that, line number or line number and columns that described transmit leg notifies the recipient to answer the feedback channel information matrix by channel measurement NDP frame or channel measurement request NDPA frame with implicit and/or display mode.
4. method according to claim 3 is characterized in that, line number or line number and columns that described transmit leg notifies the recipient to answer the feedback channel information matrix by NDP frame or NDPA frame with implicit, for:
Described transmit leg sends in described recipient's NDP frame or the NDPA frame and does not comprise line number or line number and the columns indication information that described recipient answers the feedback channel information matrix.
5. method according to claim 4 is characterized in that, described method also comprises:
After described recipient receives described NDP frame or NDPA frame, be maximum number of transmit antennas or the actual number of transmit antennas of using that to support in described recipient's feedback channel information matrix to the line number of described transmit leg feedback channel information matrix.
6. method according to claim 4 is characterized in that, described method also comprises:
After described recipient receives described NDP frame or NDPA frame, to the line number of described transmit leg feedback channel information matrix fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
7. method according to claim 3 is characterized in that, line number or line number and columns that described transmit leg notifies the recipient to answer the feedback channel information matrix by NDP frame or NDPA frame with explicit way, for:
Described transmit leg sends in described recipient's NDP frame or the NDPA frame and comprises line number or line number and the columns indication information that described recipient answers the feedback channel information matrix.
8. method according to claim 7 is characterized in that, described recipient answers the line number indication information of feedback channel information matrix to be carried in the pilot tone of NDP frame.
9. method according to claim 8 is characterized in that, described recipient answers the line number indication information of feedback channel information matrix to be carried by the cell bit among the VHT-SIG-A of NDP frame.
10. method according to claim 7 is characterized in that, described recipient answers the line number indication information of feedback channel information matrix to be carried in the NDPA frame.
11. method according to claim 10 is characterized in that, described recipient answers the line number indication information of feedback channel information matrix to be carried among the user profile territory STA Info Field in the NDPA frame.
12. method according to claim 11 is characterized in that, described recipient answers the capable indication information of feedback channel information matrix to be carried among the STA Info Field in the NDPA frame, for:
The cell of bearing association identification information AID, the cell of carrying feedback kind information Feedback Type, line number and the channel information matrix column number of channel information matrix are set respectively among the STA Info Field in the NDPA frame.
13. each described method in 12 is characterized in that according to claim 8, described method also comprises:
After described recipient receives described NDP frame or NDPA frame, to described transmit leg feedback channel information matrix column number fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
14. the notifying device of a feedback channel information matrix dimension is characterized in that, described device comprises:
Notification unit is arranged in transmit leg, is used for notifying the recipient to answer the dimension of feedback channel information matrix with implicit and/or display mode; Wherein, the dimension of described channel information matrix is the line number of channel information matrix or line number and the columns of channel information matrix.
15. device according to claim 14 is characterized in that, described notification unit is further used for, line number or line number and the columns of notifying the recipient to answer the feedback channel information matrix with implicit and/or display mode by NDP frame or NDPA frame.
16. device according to claim 15 is characterized in that,
Described notification unit is not notified to not comprising described recipient in described recipient's NDP frame or the NDPA frame and is answered the line number of feedback channel information matrix or the indication information of line number and columns.
17. device according to claim 16 is characterized in that, described device also comprises:
Feedback unit is used for after described recipient receives described NDP frame or NDPA frame, is the maximum number of transmit antennas that can support of described recipient or the number of transmit antennas of reality use to the line number of described transmit leg feedback channel information matrix.
18. device according to claim 16 is characterized in that, described method also comprises:
Feedback unit is used for after described recipient receives described NDP frame or NDPA frame, to the line number of described transmit leg feedback channel information matrix fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
19. device according to claim 15 is characterized in that,
Described notification unit is notified to comprising described recipient in described recipient's NDP frame or the NDPA frame and is answered the line number of feedback channel information matrix or the indication information of line number and columns.
20. device according to claim 19 is characterized in that, described device also comprises:
Load bearing unit is used for answering the indication information of the line number of feedback channel information matrix or line number and columns to be carried on the pilot tone of NDP frame the recipient.
21. device according to claim 20 is characterized in that, the VHT-SIG-A cell of described load bearing unit use NDP frame and/or reservation bit carry described recipient answers the line number of feedback channel information matrix or the indication information of line number and columns.
22. device according to claim 19 is characterized in that, described device also comprises:
Load bearing unit is used for answering the indication information of the line number of feedback channel information matrix or line number and columns to be carried on the STA Info Field of NDPA frame the recipient.
23. device according to claim 22 is characterized in that, described device also comprises:
Setting unit arranges respectively the cell of the columns of the cell of the cell of cell, the carrying feedback kind information Feedback Type of bearing association identification information AID, line number that the feedback channel information matrix is answered in carrying and Bearer Channel information matrix among the STA Info Field in the NDPA frame;
Described load bearing unit is carried on the corresponding information correspondence of obtaining in each self-corresponding cell.
24. each described device in 23 is characterized in that according to claim 19, described device also comprises:
Feedback unit is used for after described recipient receives described NDP frame or NDPA frame, to described transmit leg feedback channel information matrix column number fluxion during by empty in current the described NDP frame of reception or the NDPA frame.
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