CN102387008B - The method of multi-user feedback acknowledge message and the website of feeding back confirmation message - Google Patents
The method of multi-user feedback acknowledge message and the website of feeding back confirmation message Download PDFInfo
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- CN102387008B CN102387008B CN201010272096.9A CN201010272096A CN102387008B CN 102387008 B CN102387008 B CN 102387008B CN 201010272096 A CN201010272096 A CN 201010272096A CN 102387008 B CN102387008 B CN 102387008B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/04—Scheduled or contention-free access
- H04W74/06—Scheduled or contention-free access using polling
Abstract
The invention discloses a kind of method of multi-user feedback acknowledge message and the website of feeding back confirmation message, overcoming prior art does not provide the multiple users participating in MU transmission how to reply the defect of the technical scheme of ACK, the method comprises: after website receives MU-MIMO Frame, the Group ID territory comprised according to VHT-SIG-A in the physics frame head of Frame and N
sTSinformation indicated by territory, the mac address information in physical frame load, and the MU-MIMO grouping information under packet numbering indicated by Group ID territory, determine the website of replying ACK, and reply ACK by about definite sequence.Adopt this invention technical scheme, can ensure that the website in MU-MIMO grouping effectively can reply ACK in order, and not need extra signaling, each other also can collision free, the interior website without transfer of data of group is without the need to transferring ACK simultaneously, also saves signaling consumption.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method of multi-user feedback acknowledge message (ACK), and a kind of website (Station, STA) of feeding back confirmation message.
Background technology
WLAN (Wireless Local Area Networks, WLAN) is that the employing wireless communication technology is interconnected by computer equipment, forms the network system that can communicate mutually and realize resource-sharing.The essential characteristic of WLAN (wireless local area network) does not re-use telecommunication cable to be coupled together by computer and network, but wirelessly connect, thus make the movement of the structure of network and terminal more flexible.IEEE802.11 is one of mainstream technology of current WLAN (wireless local area network), and this agreement mainly specifies that physical layer (PHY) and media interviews control (MAC) layer specification.
Along with the development of mobile communication technology and people are to the raising of the demand of wireless network, physical layer specification is towards the more and more higher direction development of speed, experienced by 802.11 to 802.11b and arrive 802.11a/g again, then 802.11n, finally arrive the development course of 802.11ac.Actual physical technique also develops into orthogonal frequency division multiplexed (orthogonal frequency divisionmultiplexing from direct sequence spread spectrum skill, OFDM) technology, and in IEEE802.11n, introduce multi-antenna technology, in IEEE802.11ac, introduce large bandwidth and multi-user-multiple-input and multiple-output (MU-MIMO).
But prior art does not also provide and participates in the technical scheme how multi-user (MU) multiple users of transmitting reply acknowledge message (ACK).
Summary of the invention
Technical problem to be solved by this invention is a kind of method needing to provide multi-user feedback acknowledge message, and overcoming prior art does not provide the multiple users participating in MU transmission how to reply the defect of the technical scheme of acknowledge message (ACK).
In order to solve the problems of the technologies described above, the invention provides a kind of method of multi-user feedback acknowledge message, reply acknowledge message (ACK) for the website (STA) associated with access point (AP) in a Basic Service Set (BSS); The AP couple of STA associated with it carries out multi-user-multiple-input and multiple-output (MU-MIMO) and divides into groups, and for each MU-MIMO divides into groups designated packet numbering constructing after grouping information respectively, grouping information is informed to STA; The method comprises:
After STA receives MU-MIMO Frame, packet numbering (Group ID) territory comprised according to VHT-SIG-A in the physics frame head of Frame and station data stream information instruction (N
sTS) information indicated by territory, the media interviews in physical frame load control (MAC) address information, and the MU-MIMO grouping information under packet numbering indicated by Group ID territory, determine the STA replying ACK, and reply ACK by about definite sequence.
Preferably, the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is identical, N
sTScorresponding position in territory is non-vanishing, and carry the MAC Address identical with the MAC Address of this STA self in described physical frame load, then this STA replys described ACK;
Wherein, described relevant position is identical from the relative position in MU-MIMO divides into groups with this STA.
Preferably, described about definite sequence comprises the order of STA in MU-MIMO grouping.
Preferably, according to described about definite sequence, the STA first replying described ACK is the STA corresponding to MAC Address of carrying in the request transmission frame (RTS) of this MU-MIMO transmission; All the other STA that the MAC Address of carrying in the load of described MU-MIMO Frame identifies reply described ACK according to the relative position order in MU-MIMO grouping.
Preferably, described about definite sequence comprises the relative position order of STA in MU-MIMO grouping that the MAC Address of carrying in the load of described MU-MIMO Frame identifies.
Preferably, the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is different, then this STA does not reply described ACK.
Preferably, the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is identical, N
sTSrelevant position in territory is designated as zero, then this STA does not reply described ACK;
Wherein, described relevant position is identical from the relative position in MU-MIMO divides into groups with this STA.
Preferably, the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is identical, N
sTSrelevant position instruction in territory is non-vanishing, and the MAC Address of the MAC and this STA self carried in described physical frame load is different, then this STA does not reply described ACK;
Wherein, described relevant position is identical with the relative position of this STA in MU-MIMO divides into groups.
Preferably, be the step of each MU-MIMO grouping designated groups numbering, comprise:
Different MU-MIMO groupings has identical or different packet numberings.
Another technical problem to be solved by this invention is the website (STA) needing to provide a kind of feeding back confirmation message, and overcoming prior art does not provide the multiple users participating in MU transmission how to reply the defect of the technical scheme of acknowledge message (ACK).
In order to solve the problems of the technologies described above, the invention provides a kind of website (STA) of feeding back confirmation message, be applied to and reply acknowledge message (ACK) to the access point (AP) in a Basic Service Set (BSS), it is associated with described AP with other one or more STA; Described STA comprises receiver module and feedback module, wherein:
Described receiver module, for receiving multi-user-multiple-input and multiple-output (MU-MIMO) Frame;
Described feedback module, for packet numbering (Group ID) territory that comprises according to VHT-SIG-A in the physics frame head of described MU-MIMO Frame and station data stream information instruction (N
sTS) information indicated by territory, the media interviews in physical frame load control (MAC) address information, and the MU-MIMO grouping information under packet numbering indicated by Group ID territory, determine the STA replying ACK, and reply ACK by about definite sequence;
Wherein, the described AP couple of STA associated with it carries out MU-MIMO grouping, for each MU-MIMO divides into groups designated packet numbering constructing after grouping information respectively, grouping information is informed to STA.
Preferably, described feedback module is used for replying described ACK by the order of STA in MU-MIMO grouping.
Preferably, the relative position order of STA in MU-MIMO grouping that described feedback module is used for identifying by the MAC Address of carrying in the load of described MU-MIMO Frame replys described ACK message.
Adopt this invention technical scheme, can ensure that the STA in MU-MIMO grouping effectively can reply ACK in order, and not need extra signaling, each other also can collision free, the interior STA without transfer of data of group is without the need to transferring ACK simultaneously, also saves signaling consumption.Also can ensure that the service of primary website (Station, STA) obtains preferential guarantee.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the method for the multi-user feedback ACK of the embodiment of the present invention one;
Fig. 2 is the composition schematic diagram of the STA of the feeding back ACK of the embodiment of the present invention two.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.
First, if do not conflicted, be combineding with each other, all within protection scope of the present invention of each feature in the embodiment of the present invention and embodiment.In addition, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
The method of embodiment one, multi-user feedback ACK
The website (STA) that the present embodiment is used for associating with access point (AP) in a Basic Service Set (BSS) replys acknowledge message.As shown in Figure 1, the present embodiment mainly comprises the steps:
Step S110, at a Basic Service Set (Basic Service Set, BSS) in, access point (AccessPoint, AP) according to each website (Station, the combination of factors such as channel condition information STA), data business volume, data traffic types or several factor, all possible MU-MIMO grouping is carried out to the STA associated with it, simultaneously for each MU-MIMO divides into groups an appointment packet numbering (Group ID) construct grouping information respectively;
Wherein, different MU-MIMO groupings can have identical packet numbering; Certainly, different MU-MIMO groupings also can have different packet numberings;
Grouping information is informed to STA by signaling by step S120, AP;
After step S130, STA receive grouping information, know the packet numbering of the MU-MIMO grouping residing for self, also can obtain from the relative position information in MU-MIMO grouping simultaneously;
After step S140, STA receive MU-MIMO Frame, packet numbering (Group ID) territory comprised according to VHT-SIG-A in the physics frame head of Frame and station data stream information instruction (N
sTS) information indicated by territory, the media interviews in physical frame load control (MAC) address information, and the MU-MIMO grouping information under packet numbering indicated by Group ID territory, determine the STA replying ACK, and reply ACK by about definite sequence.
Concrete, if the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in MU-MIMO Frame is identical, N
sTSthe instruction of relevant position, territory is non-vanishing, carries the MAC Address identical with the MAC Address of this STA self in physical frame load, then, after Data Detection completes, this STA needs to reply ACK; Above-mentioned relative position is identical from the relative position in MU-MIMO divides into groups with this STA.
Concrete, above-mentioned about definite sequence can be the relative position order of STA in MU-MIMO grouping.
Concrete, by above-mentioned about definite sequence, the STA first replying ACK is the STA corresponding to MAC Address carried in the request transmission frame of this MU-MIMO transmission (Request To Send, RTS), and this STA can be referred to as primary website.
Concrete, if the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in MU-MIMO Frame is different, then this STA is without the need to further resolution data, also without the need to replying ACK.
Concrete, if the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in MU-MIMO Frame is identical, N
sTSrelevant position in territory is designated as zero, then this STA is without the need to further resolution data, also without the need to replying ACK; Above-mentioned relevant position is identical from the relative position in MU-MIMO divides into groups with this STA.
Concrete, if the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in MU-MIMO Frame is identical, N
sTSrelevant position instruction in territory is non-vanishing, and the MAC Address of the MAC and this STA that carry in physical frame load self is different, then this STA is without the need to replying ACK; Above-mentioned relevant position is identical with the relative position of this STA in MU-MIMO divides into groups.
The practical application one of embodiment one
1 AP and 6 STA is had in network, 6 STA are expressed as the first website (STA-1), second website (STA-2), 3rd website (STA-3), 4th website (STA-4), 5th website (STA-5), the 6th website (STA-6).Each MU-MIMO grouping is made up of 4 STA at most, and be still considered to be made up of 4 STA less than the MU-MIMO grouping of 4 STA, not enough part can be thought has virtual STA to exist.
These 6 STA are divided into multiple MU-MIMO to divide into groups according to the channel condition information of each STA by AP, and grouping information is informed to corresponding STA.Assuming that group # is abundant, each group # only indicates a MU-MIMO grouping, and one of them is grouped into (STA-2, STA-6, STA-4, STA-1), group # Group ID=2.
AP issues this MU-MIMO grouping information, and packets of information is containing group # Group ID=2, and according to the identifier of tactic 4 STA in bracket above, in this practical application, the identifier MAC Address of each STA represents.
Each STA detects after receiving this MU-MIMO grouping information, but only has STA-1, and STA-2, STA-4 and STA-6 can using this MU-MIMO grouping information as useful informations, because there is the STA identifier matched with itself in the information received.The useful information that from then on these four STA obtain in MU-MIMO grouping information has two aspects:
1) the MU-MIMO grouping of group # Group ID=2 itself is belonged to;
2) relative position originally in this MU-MIMO divides into groups.
Such as, the information that from then on STA-1 obtains in MU-MIMO grouping information comprises: STA-1 belongs to the MU-MIMO grouping of group # Group ID=2, and STA-1 is in the 4th position in this grouping simultaneously.
In this practical application, the STA that the MAC Address of carrying in RTS frame identifies has transfer of data in this MU-MIMO transmission, then this STA needs first to reply ACK, and the relative position order that all the other STA that the MAC Address of carrying in Frame load identifies divide into groups according to place replys ACK.
The current MU-MIMO transmission of this practical application, in 4 STA, STA-1, STA-2 and STA-6 have a data stream transmitting, and STA-4 does not have transfer of data.
Carry out RTS/ and allow transmission frame (Clear To Send, CTS) after exchanging, carry out MU-MIMO data packet transmission, MAC Address in MAC Address territory wherein in the RTS frame load of AP transmission is the MAC Address of STA-6, comprises group # Group ID=2 information in the physics frame head of RTS frame.
Adopt the method for this practical application, the judging process that each STA replys ACK is as follows:
(1) for STA-1
STA-1 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-1 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1.
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-1 occupies the 4th position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is the MAC Address of STA-6, and this transmission has the data of STA-6;
These information comprehensive above, according to the method for this practical application, because the forward STA of relative position does not have the STA on transfer of data i.e. the 3rd position not have transfer of data, therefore STA-1 the 3rd replys ACK.
(2) for STA-2
STA-2 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-2 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1.
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-2 occupies first position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is the MAC Address of STA-6, and this transmission has the data of STA-6;
Comprehensive these information above, according to the method for this practical application, STA-2 the 2nd replys ACK.
(3) for STA-3 and STA-5
STA-3 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame does not belong to place MU-MIMO own and divides into groups, without the need to replying ACK.
The STA of same treatment is had to also have STA5 with STA3.
(4) for STA-4
STA-4 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-4 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1.
According to content above, STA-4 occupies the 3rd position in this MU-MIMO grouping, therefore this transmission does not belong to the data of self, without the need to replying ACK.
(5) for STA-6
STA-6 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-6 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1.
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-6 occupies second position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is MAC Address own;
Comprehensive these information above, according to the method for this practical application, STA-6 the 1st replys ACK.
The order of final reply ACK:
1st STA replying ACK is STA-6;
2nd STA replying ACK is STA-2;
3rd STA replying ACK is STA-1.
The practical application two of embodiment one
1 AP and 6 STA is had in network, 6 STA are expressed as the first website (STA-1), second website (STA-2), 3rd website (STA-3), 4th website (STA-4), 5th website (STA-5), the 6th website (STA-6).Each MU-MIMO grouping is made up of 4 STA at most, and be still considered to be made up of 4 STA less than the MU-MIMO grouping of 4 STA, not enough part can be thought has virtual STA to exist.
These 6 STA are divided into multiple MU-MIMO to divide into groups according to the channel condition information of each STA by AP, and grouping information is informed to corresponding STA, assuming that group # is abundant, each group # only indicates a MU-MIMO grouping, one of them is grouped into (STA-2, STA-6, STA-4, STA-1), group # Group ID=2.
AP issues this MU-MIMO grouping information, and packets of information is containing group # Group ID=2, and according to the identifier of tactic 4 STA in bracket above, in this practical application, the identifier MAC Address of each STA represents.
Each STA detects after receiving this MU-MIMO grouping information, but only have STA-1, STA-2, STA-4 and STA-6 can using this MU-MIMO grouping information as useful information, because there is the STA identifier matched with itself in the information received, the useful information that from then on these four STA obtain in MU-MIMO grouping information has two aspects:
1) the MU-MIMO grouping of group # Group ID=2 itself is belonged to;
2) relative position originally in this MU-MIMO divides into groups.
Such as, the information that from then on STA-1 obtains in MU-MIMO grouping information comprises: STA-1 belongs to the MU-MIMO grouping of group # Group ID=2, and STA-1 is in the 4th position in this grouping simultaneously.
In this practical application, the STA that the MAC Address of carrying in RTS frame identifies needs first to reply ACK, if but this STA in this MU-MIMO transmission without transfer of data, then this STA is without the need to replying ACK.The relative position order that the STA that the MAC Address of carrying in Frame load identifies divides into groups according to place replys ACK.
The current MU-MIMO transmission of this practical application, in 4 STA, only have STA-1, STA-2 respectively to have a data stream transmitting, STA-4 and STA-6 does not have transfer of data.
After carrying out RTS/CTS Frame switch, carry out MU-MIMO data packet transmission, the MAC Address in the MAC Address territory wherein in the RTS frame load of AP transmission is the MAC Address of STA-6, comprises group # Group ID=2 information in the physics frame head of RTS frame.
Adopt the method for this practical application, the judging process that each STA replys ACK is as follows:
(1) for STA-1
STA-1 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-1 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is zero, and namely this transmission does not comprise the data of the STA of second position in MU-MIMO grouping;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-1 occupies the 4th position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is the MAC Address of STA-6, and this transmission does not have the data of STA-6,
Comprehensive these information above, according to the method for this practical application, STA-1 the 2nd replys ACK.
(2) for STA-2
STA-2 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-2 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is zero, and namely this transmission does not comprise the data of the STA of second position in MU-MIMO grouping;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-2 occupies first position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is the MAC Address of STA-6, and this transmission does not have the data of STA-6;
Comprehensive these information above, according to the method for this practical application, STA-2 the 1st replys ACK.
(3) for STA-3 and STA-5
STA-3 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame does not belong to institute MU-MIMO own and divides into groups, without the need to replying ACK.
The STA of same treatment is had to also have STA5 with STA3.
(4) for STA-4
STA-4 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-6 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is zero, and namely this transmission does not comprise the data of the STA of second position in MU-MIMO grouping;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
According to content above, STA-4 occupies the 3rd position in this MU-MIMO grouping, and this transmits the data not belonging to self, without the need to replying ACK.
(5) for STA-6
STA-6 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-6 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is zero, and namely this transmission does not comprise the data of the STA of second position in MU-MIMO grouping;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is zero, and namely this transmission does not comprise the data of the STA of the 3rd position in MU-MIMO grouping;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
According to content above, STA-6 occupies second position in this MU-MIMO grouping, so this transmission does not belong to the data of self; Although the MAC Address in the load of RTS frame is the MAC Address of itself, according to the method for this practical application, STA-6 is without the need to replying ACK.
The order of final reply ACK:
1st STA replying ACK is STA-2;
2nd STA replying ACK is STA-1.
The practical application three of embodiment one
1 AP and 6 STA is had in hypothetical network, 6 STA are expressed as the first website (STA-1), second website (STA-2), 3rd website (STA-3), 4th website (STA-4), 5th website (STA-5), the 6th website (STA-6).Each MU-MIMO grouping is made up of 4 STA at most, and be still considered to be made up of 4 STA less than the MU-MIMO grouping of 4 STA, not enough part can be thought has virtual STA to exist.
These 6 STA are divided into multiple MU-MIMO to divide into groups according to the channel condition information of each STA by AP, and grouping information is informed to corresponding STA, assuming that group # is abundant, each group # only indicates a MU-MIMO grouping, one of them is grouped into (STA-2, STA-6, STA-4, STA-1), group # Group ID=2.
AP issues this MU-MIMO grouping information, and packets of information is containing group # Group ID=2, and according to the identifier of tactic 4 STA in bracket above, in this practical application, the identifier MAC Address of each STA represents.
Each STA detects after receiving this MU-MIMO grouping information, but only have STA-1, STA-2, STA-4, STA-6 can using this MU-MIMO grouping information as useful information, because there is the STA identifier matched with itself in the information received, the useful information that from then on these four STA obtain in MU-MIMO grouping information has two aspects:
1) the MU-MIMO grouping of group # Group ID=2 itself is belonged to;
2) relative position originally in this MU-MIMO divides into groups.
Such as, the information that from then on STA-1 obtains in MU-MIMO grouping information comprises: STA-1 belongs to the MU-MIMO grouping of group # Group ID=2, and STA-1 is in the 4th position in this grouping simultaneously.
In this practical application, aforementioned about definite sequence can be the relative position order of STA in MU-MIMO grouping that the MAC Address of carrying in the Frame load of this MU-MIMO transmission identifies.Also namely, the relative position order that the STA that the MAC Address of carrying in Frame load identifies divides into groups according to place replys ACK.
Current MU-MIMO transmission in this practical application, in 4 STA, STA-1, STA-2, STA-4 and STA-6 have a data stream transmitting.
After carrying out RTS/CTS Frame switch, carry out MU-MIMO data packet transmission, the MAC Address in the MAC Address territory wherein in the RTS frame load of AP transmission is the MAC Address of STA-6, comprises group # Group ID=2 information in the physics frame head of RTS frame.
Adopt the method for this practical application, the judging process that each STA replys ACK is as follows:
(1) for STA-1
STA-1 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-1 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-1 occupies the 4th position in this MU-MIMO grouping.
Comprehensive these information above, according to the method for this practical application, STA-1 the 4th replys ACK.
(2) for STA-2
STA-2 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-2 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-2 occupies first position in this MU-MIMO grouping.
Comprehensive these information above, according to the method for this practical application, STA-2 the 1st replys ACK.
(3) for STA-3 and STA-5
STA-3 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame does not belong to institute MU-MIMO own and divides into groups, without the need to replying ACK.
The STA of same treatment is had to also have STA5 with STA3.
(4) for STA-4
STA-4 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-4 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-4 occupies the 3rd position in this MU-MIMO grouping.
Comprehensive these information above, according to the method for this practical application, STA-4 the 3rd replys ACK.
(5) for STA-6
STA-6 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-6 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-6 occupies second position in this MU-MIMO grouping;
Comprehensive these information above, according to the method for this practical application, STA-6 the 2nd replys ACK.
The order of final reply ACK:
1st STA replying ACK is STA-2;
2nd STA replying ACK is STA-6;
3rd STA replying ACK is STA-4;
4th STA replying ACK is STA-1.
The practical application four of embodiment one
1 AP and 9 STA is had in hypothetical network, 9 STA are expressed as the first website (STA-1), second website (STA-2), 3rd website (STA-3), the 4th website (STA-4), the 5th website (STA-5), 6th website (STA-6), 7th website (STA-7), the 8th website (STA-8), the 9th website (STA-9).Each MU-MIMO grouping is made up of 4 STA at most, and be still considered to be made up of 4 STA less than the MU-MIMO grouping of 4 STA, not enough part can be thought has virtual STA to exist.
These 9 STA are divided into multiple MU-MIMO to divide into groups according to the channel condition information of each STA by AP, and all grouping informations are informed to STA, assuming that group # is insufficient, each group # can indicate multiple MU-MIMO to divide into groups, but there is such constraints, if same STA appears in multiple MU-MIMO groupings of same group # instruction, so in the group of this STA in these groupings, relative position is fixing.
In this practical application, group # Group ID=2 indicates two MU-MIMO groupings, and two groupings are respectively (STA-2, STA-6, STA-4, STA-1), (STA-2, STA-6, STA-4, STA-9).
AP issues MU-MIMO grouping information, and this MU-MIMO grouping information comprises group # GroupID=2, and according to the identifier of tactic 4 STA in bracket above, and the order that three MU-MIMO grouping informations are issued is also according to the order of first above written.
In this practical application, the STA that the MAC Address of carrying in RTS frame identifies has transfer of data in this MU-MIMO transmission, then this STA needs first to reply ACK, and the relative position order that all the other STA that the MAC Address of carrying in Frame load identifies divide into groups according to place replys ACK.
The current MU-MIMO transmission of this practical application, in 4 STA, STA-9, STA-6, STA-4 and STA-1 have a data stream transmitting, namely this transmission for be second grouping under group # GroupID=2.
After carrying out RTS/CTS Frame switch, carry out MU-MIMO data packet transmission, the MAC Address in the MAC Address territory wherein in the RTS frame load of AP transmission is the MAC Address of STA-6, comprises group # Group ID=2 information in the physics frame head of RTS frame.
Adopt the method for this practical application, the judging process that each STA replys ACK is as follows:
(1) for STA-1
STA-1 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-1 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is not included, so this transmission does not belong to the data of self.
Comprehensive these information above, according to the method for this practical application, STA-1 does not reply ACK.
(2) for STA-2
STA-2 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-2 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-2 occupies first position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is the MAC Address of STA-6, and this transmission has the data of STA-6.
Comprehensive these information above, according to the method for this practical application, STA-2 the 2nd replys ACK.
(3) for STA-3, STA5, STA7 and STA8
STA-3 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame does not belong to institute MU-MIMO own and divides into groups, without the need to replying ACK.
The STA of same treatment is had to also have STA5, STA7 and STA8 with STA3;
(4) for STA-4
STA-4 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-4 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-4 occupies the 3rd position in this MU-MIMO grouping.
Comprehensive these information above, according to the method for this practical application, STA-4 the 3rd replys ACK.
(5) for STA-6
STA-6 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-6 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-6 occupies second position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is MAC Address own.
Comprehensive these information above, according to the method for this practical application, STA-6 the 1st replys ACK.
(6) for STA-9
STA-9 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-9 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-9 occupies the 4th position in this MU-MIMO grouping;
According to the RTS frame received, the MAC Address in the load of known RTS frame is the MAC Address of STA-6, and this transmission has the data of STA-6.
Comprehensive these information above, according to the method for this practical application, STA-9 the 4th replys ACK.
The order of final reply ACK:
1st STA replying ACK is STA-6;
2nd STA replying ACK is STA-2;
3rd STA replying ACK is STA-4;
4th STA replying ACK is STA-9.
The practical application five of embodiment one
1 AP and 9 STA is had in hypothetical network, 9 STA are expressed as the first website (STA-1), second website (STA-2), 3rd website (STA-3), the 4th website (STA-4), the 5th website (STA-5), 6th website (STA-6), 7th website (STA-7), the 8th website (STA-8), the 9th website (STA-9).Each MU-MIMO grouping is made up of 4 STA at most, and be still considered to be made up of 4 STA less than the MU-MIMO grouping of 4 STA, not enough part can be thought has virtual STA to exist.
These 9 STA are divided into multiple MU-MIMO to divide into groups according to the channel condition information of each STA by AP, and all grouping informations are informed to STA, assuming that group # is insufficient, each group # can indicate multiple MU-MIMO to divide into groups, but there is such constraints, if same STA appears in multiple MU-MIMO groupings of same group # instruction, so in the group of this STA in these groupings, relative position is fixing.
In this practical application, group # Group ID=2 indicates two MU-MIMO groupings, and two groupings are respectively (STA-2, STA-6, STA-4, STA-1), (STA-2, STA-6, STA-4, STA-9).
AP issues MU-MIMO grouping information, and this MU-MIMO grouping information comprises group # GroupID=2, and according to the identifier of tactic 4 STA in bracket above, and the order that three MU-MIMO grouping informations are issued is also according to the order of first above written.
In this practical application, the relative position order that the STA that the MAC Address of carrying in Frame load identifies divides into groups according to place replys ACK.
The current MU-MIMO transmission of this practical application, in 4 STA, STA-9, STA-6, STA-4 and STA-1 have a data stream transmitting, namely this transmission for be second grouping under group # GroupID=2.
After carrying out RTS/CTS Frame switch, carry out MU-MIMO data packet transmission, the MAC Address in the MAC Address territory wherein in the RTS frame load of AP transmission is the MAC Address of STA-6, comprises group # Group ID=2 information in the physics frame head of RTS frame.
Adopt the method for this practical application, the judging process that each STA replys ACK is as follows:
(1) for STA-1
STA-1 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-1 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is not included, so this transmission does not belong to the data of self;
Comprehensive these information above, according to the method for this practical application, STA-1 does not reply ACK.
(2) for STA-2
STA-2 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-2 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-2 occupies first position in this MU-MIMO grouping.
Comprehensive these information above, according to the method for this practical application, STA-2 the 1st replys ACK.
(3) for STA-3, STA5, STA7 and STA8
STA-3 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame does not belong to institute MU-MIMO own and divides into groups, without the need to replying ACK.
The STA of same treatment is had to also have STA5, STA7 and STA8 with STA3;
(4) for STA-4
STA-4 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-4 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-4 occupies the 3rd position in this MU-MIMO grouping.
Comprehensive these information above, according to the method for this practical application, STA-4 the 3rd replys ACK.
(5) for STA-6
STA-6 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-6 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self;
According to content above, STA-6 occupies second position in this MU-MIMO grouping;
Comprehensive these information above, according to the method for this practical application, STA-6 the 2nd replys ACK.
(6) for STA-9
STA-9 receives MU-MIMO Frame, resolves the Group ID territory in VHT-SIG-A, knows that this frame belongs to the MU-MIMO grouping of place group # Group ID=2 own, resolves the N in VHT-SIG-A
sTSterritory, thus the data obtaining that this MU-MIMO transmission comprises several STA, according to content above, STA-9 resolves N
sTSthe information that territory obtains comprises:
1) the data fluxion of the STA of interior first position of this MU-MIMO grouping is 1;
2) the data fluxion of the STA of interior second position of this MU-MIMO grouping is 1;
3) in this MU-MIMO grouping, the data fluxion of the STA of the 3rd position is 1;
4) in this MU-MIMO grouping, the data fluxion of the STA of the 4th position is 1;
Mac address information in further parse for frame load, finds that the MAC Address of self is included, so this transmission has the data belonging to self; According to content above, STA-9 occupies the 4th position in this MU-MIMO grouping;
Comprehensive these information above, according to the method for this practical application, STA-9 the 4th replys ACK.
The order of final reply ACK:
1st STA replying ACK is STA-2;
2nd STA replying ACK is STA-6;
3rd STA replying ACK is STA-4;
4th STA replying ACK is STA-9.
The website (STA) of embodiment two, a kind of feeding back confirmation message
The STA of the present embodiment is applied to a Basic Service Set (Basic Service Set, BSS) access point (AP) in replys acknowledge message (ACK), it is associated with other one or more STA and AP, it mainly comprises the first receiver module 210, second receiver module 220 and feedback module 230, wherein:
First receiver module 210, for receiving RTS and the grouping information of AP transmission, know that the packet numbering that the multi-user-multiple-input and multiple-output (MU-MIMO) residing for STA self divides into groups and STA are from the relative position information in MU-MIMO grouping according to grouping information;
Second receiver module 220, for receiving MU-MIMO Frame;
Feedback module 230, is connected with the first receiver module 210 and the second receiver module 220, for the packet numbering territory that comprises according to VHT-SIG-A in the physics frame head of MU-MIMO Frame and N
sTSinformation indicated by territory, media interviews in physical frame load control (MAC) address information, and the MU-MIMO grouping information under packet numbering indicated by Group ID territory, determine the STA replying ACK, and reply ACK message by about definite sequence;
Wherein, the one such as channel condition information, data business volume, data traffic types of AP according to each STA or the combination of a few person, MU-MIMO grouping is carried out to the STA associated with it, for each MU-MIMO grouping designated packet is numbered and constructs grouping information respectively, by signaling, grouping information is informed to STA.
Above-mentioned feedback module 230 is for replying described ACK message by the order of STA in MU-MIMO grouping.
The relative position order of STA in MU-MIMO grouping that above-mentioned feedback module 230 may be used for identifying by the MAC Address of carrying in the load of described MU-MIMO Frame replys described ACK message.
Those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Although the execution mode disclosed by the present invention is as above, the execution mode that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (11)
1. a method for multi-user feedback acknowledge message, replys acknowledge message (ACK) for the website (STA) associated with access point (AP) in a Basic Service Set (BSS); The AP couple of STA associated with it carries out multi-user-multiple-input and multiple-output (MU-MIMO) and divides into groups, and for each MU-MIMO divides into groups designated packet numbering constructing after grouping information respectively, grouping information is informed to STA;
It is characterized in that, the method comprises:
After STA receives MU-MIMO Frame, packet numbering (Group ID) territory comprised according to VHT-SIG-A in the physics frame head of Frame and station data stream information instruction (N
sTS) information indicated by territory, the media interviews in physical frame load control (MAC) address information, and the MU-MIMO grouping information under packet numbering indicated by Group ID territory, determine the STA replying ACK, and reply ACK by about definite sequence,
If the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is identical, N
sTSrelevant position in territory is designated as zero, then this STA does not reply described ACK, and wherein, described relevant position is identical from the relative position in MU-MIMO divides into groups with this STA.
2. method according to claim 1, is characterized in that:
The packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is identical, N
sTScorresponding position in territory is non-vanishing, and carry the MAC Address identical with the MAC Address of this STA self in described physical frame load, then this STA replys described ACK;
Wherein, described relevant position is identical from the relative position in MU-MIMO divides into groups with this STA.
3. method according to claim 1, is characterized in that:
Described about definite sequence comprises the order of STA in MU-MIMO grouping.
4. method according to claim 3, is characterized in that:
According to described about definite sequence, the STA first replying described ACK is the STA corresponding to MAC Address of carrying in the request transmission frame (RTS) of this MU-MIMO transmission; All the other STA that the MAC Address of carrying in the load of described MU-MIMO Frame identifies reply described ACK according to the relative position order in MU-MIMO grouping.
5. method according to claim 3, is characterized in that:
Described about definite sequence comprises the relative position order of STA in MU-MIMO grouping that the MAC Address of carrying in the load of described MU-MIMO Frame identifies.
6. method according to claim 1, is characterized in that:
The packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is different, then this STA does not reply described ACK.
7. method according to claim 1, is characterized in that:
The packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is identical, N
sTSrelevant position instruction in territory is non-vanishing, and the MAC Address of the MAC and this STA self carried in described physical frame load is different, then this STA does not reply described ACK;
Wherein, described relevant position is identical with the relative position of this STA in MU-MIMO divides into groups.
8. method according to claim 1, is characterized in that, is the step of each MU-MIMO grouping designated groups numbering, comprises:
Different MU-MIMO groupings has identical or different packet numberings.
9. the website (STA) of a feeding back confirmation message, be applied to and reply acknowledge message (ACK) to the access point (AP) in a Basic Service Set (BSS), it is associated with described AP with other one or more STA, it is characterized in that, described STA comprises receiver module and feedback module, wherein:
Described receiver module, for receiving multi-user-multiple-input and multiple-output (MU-MIMO) Frame;
Described feedback module, for packet numbering (Group ID) territory that comprises according to VHT-SIG-A in the physics frame head of described MU-MIMO Frame and station data stream information instruction (N
sTS) information indicated by territory, the media interviews in physical frame load control (MAC) address information, and the MU-MIMO grouping information under packet numbering indicated by Group ID territory, determine the STA replying ACK, and reply ACK by about definite sequence;
Wherein, the described AP couple of STA associated with it carries out MU-MIMO grouping, for each MU-MIMO divides into groups designated packet numbering constructing respectively after grouping information, grouping information is informed to STA, if the packet numbering of the MU-MIMO grouping at packet numbering and this STA self place indicated by Group ID territory in described MU-MIMO Frame is identical, N
sTSrelevant position in territory is designated as zero, then feedback module does not reply described ACK, and wherein, described relevant position is identical from the relative position in MU-MIMO divides into groups with this STA.
10. website according to claim 9, is characterized in that:
Described feedback module is used for replying described ACK by the order of STA in MU-MIMO grouping.
11. websites according to claim 10, is characterized in that:
The relative position order of STA in MU-MIMO grouping that described feedback module is used for identifying by the MAC Address of carrying in the load of described MU-MIMO Frame replys described ACK message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010272096.9A CN102387008B (en) | 2010-09-01 | 2010-09-01 | The method of multi-user feedback acknowledge message and the website of feeding back confirmation message |
| PCT/CN2011/076722 WO2012028030A1 (en) | 2010-09-01 | 2011-06-30 | Method for multi-user acknowledgement feedback, and station for feeding back acknowledgment |
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| CN201010272096.9A CN102387008B (en) | 2010-09-01 | 2010-09-01 | The method of multi-user feedback acknowledge message and the website of feeding back confirmation message |
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| CN103684662A (en) * | 2012-09-10 | 2014-03-26 | 华为技术有限公司 | Communication method and device |
| US9923657B2 (en) * | 2013-03-12 | 2018-03-20 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
| CN103227698B (en) * | 2013-04-28 | 2016-06-08 | 重庆邮电大学 | A kind of multi-user's Limited Feedback cost reduction method in LTE system |
| CN105376032A (en) * | 2014-08-25 | 2016-03-02 | 华为技术有限公司 | Method and device for transmitting data in wireless local area network |
| EP3266243A1 (en) * | 2015-03-06 | 2018-01-10 | Interdigital Patent Holdings, Inc. | Method and system for wireless local area network (wlan) long symbol duration migration |
| CN113595601A (en) | 2015-03-06 | 2021-11-02 | 交互数字专利控股公司 | Short packet optimization in WLAN systems |
| WO2017128882A1 (en) * | 2016-01-27 | 2017-08-03 | 海能达通信股份有限公司 | Data transmission method, terminal device, network side device and system |
| CN112789806B (en) * | 2019-09-10 | 2022-08-30 | 北京小米移动软件有限公司 | Data transmission method, device and storage medium |
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| CN101668338A (en) * | 2009-09-27 | 2010-03-10 | 新邮通信设备有限公司 | Method for realizing multiuser multiple-input multiple-output (MIMO) in time division duplex (TDD) system and equipment thereof |
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