CN107613526B - Communication method, communication device, access point and station of wireless local area network - Google Patents
Communication method, communication device, access point and station of wireless local area network Download PDFInfo
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Abstract
The invention provides a communication method, a communication device, an access point and a station of a wireless local area network, wherein the communication method of the wireless local area network comprises the following steps: receiving uplink data frames continuously sent by each station in a plurality of stations, wherein the uplink data frames carry transmission identifiers, and the values of the transmission identifiers are used for representing the transmission priority and the service quality requirements of the uplink data frames; generating a multi-site confirmation message frame, wherein the multi-site confirmation message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating the receiving state information of the uplink data frames carrying the same transmission identification; and sending the multi-site confirmation message frame. The technical scheme of the invention enables the access point to aggregate the receiving state information of the uplink data frames carrying the same TID in the feedback M-BA, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of frequency spectrum.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method of a wireless local area network, a communication apparatus of a wireless local area network, an access point, and a station.
Background
In 5 months in 2013, 802.11 has established a research group HEW (High efficiency Wireless local area network) of the next generation Wi-Fi (Wireless Fidelity) technology, namely 802.11ax, and the main research points are to improve the throughput of the existing Wi-Fi technology, improve the effective utilization efficiency and the quality of service (quality of service) of the frequency spectrum, and realize a more intensive communication environment than the existing Wi-Fi technology.
In 802.11ax, OFDMA (Orthogonal Frequency Division Multiple Access) technology is adopted, and in order to allocate uplink resources to each STA (Station), a new resource allocation message frame, called a trigger frame, is defined in 802.11 ax. After the station sends the uplink data, the AP (Access Point) sends an M-BA (Multi Block ACK, Multi Block acknowledgement) message frame to feed back the reception status of the uplink data.
Since there may be the same TID (Traffic Identifier) in the MU (Multi-User ) PPDU (Physical Layer Convergence Protocol Data Unit) sent by the STAs to the AP, the Association Identifier) + TID + BA Starting Sequence Control + BA Bitmap format continuously appears in the BA Information subfield in the M-BA replied by the AP, and as shown in fig. 1, the BA Information subfield includes Per TID Info (including the id and the TID) + BA Starting Sequence Control + Bitmap format. It can be seen that when the same TID exists in the data frame sent by the STAs to the AP, the same TID also continuously appears in the BA information sub-domain in the M-BA, which may cause unnecessary signaling overhead.
Disclosure of Invention
Based on at least one of the above technical problems, the present invention provides a new communication scheme for a wireless local area network, so that an access point can aggregate reception status information of uplink data frames carrying the same TID in a feedback M-BA, thereby reducing unnecessary signaling overhead and facilitating improvement of spectrum utilization efficiency.
In view of the above, according to a first aspect of the present invention, a communication method of a wireless local area network is provided, including: receiving uplink data frames continuously sent by each station in a plurality of stations, wherein the uplink data frames carry transmission identifiers, and the values of the transmission identifiers are used for representing the transmission priority and the service quality requirements of the uplink data frames; generating a multi-site confirmation message frame, wherein the multi-site confirmation message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating the receiving state information of the uplink data frames carrying the same transmission identification; and sending the multi-site confirmation message frame.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
Meanwhile, because the reception state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subfield, when uplink data frames (from the same site or different sites) of different TIDs exist, a plurality of different TIDs appear in the BA information subfield, that is, uplink data frames sent by a plurality of sites are grouped according to the TIDs, each group of uplink data frames has the same TID, and further, the reception state information for each group of uplink data frames is aggregated in the BA information subfield in the multi-site acknowledgement message frame. If the uplink data frames have the same TID and different AIDs, it is indicated that the TIDs of the uplink data frames sent by the multiple stations are the same, so that the receiving state information of the uplink data frames with the same TID and different AIDs is aggregated into a block, the number of times of TIDs appearing in the receiving state information can be reduced, and unnecessary overhead is saved. The AID is a unique identifier in a BSS (basic Service Set) allocated to the station by the AP in the process of associating the station with the AP.
In the foregoing technical solution, preferably, the BA information sub-field includes: the uplink data transmission method includes a transmission identifier of each group of uplink data frames carrying the same transmission identifier, and an association identifier (i.e., AID), a BA starting sequence control field, and a BA bitmap field corresponding to each uplink data frame in each group of uplink data frames. The BA starting sequence control field gives the sequence number in a group of uplink data frames, and the BA Bitmap field is used for recording whether each uplink data frame is correctly received.
Preferably, when any identification bit in the BA bitmap field is a first value, it indicates that the corresponding uplink data frame is correctly received, and when any identification bit in the BA bitmap field is a second value, it indicates that the corresponding uplink data frame is not correctly received. For example, a value of 1 for any flag bit indicates that the corresponding uplink data frame is correctly received, and a value of 0 for any flag bit indicates that the corresponding uplink data frame is not correctly received.
In any of the foregoing technical solutions, preferably, the multi-station acknowledgement message frame further includes a BA control subfield, where one or more bits of a reserved field in the BA control subfield are used to indicate that the multi-station acknowledgement message frame will aggregate the reception status information of the uplink data frames carrying the same transmission identifier in the BA information subfield.
In the technical scheme, one or more bits of a reserved field in a BA Control subfield are used to indicate that a multi-site acknowledgement message frame aggregates reception state information of uplink data frames carrying the same transmission identifier in a BA information subfield, so that the aggregation mechanism can be indicated to a site, so that the site can correctly analyze the multi-site acknowledgement message frame.
According to the second aspect of the present invention, there is also provided a communication method for a wireless local area network, including: continuously sending an uplink data frame, wherein the uplink data frame carries a transmission identifier, and the value of the transmission identifier is used for representing the transmission priority of the uplink data frame; and receiving a multi-site confirmation message frame, wherein the multi-site confirmation message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating the receiving state information of the uplink data frames carrying the same transmission identification.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
According to the third aspect of the present invention, there is further provided a communication apparatus for a wireless local area network, including: a receiving unit, configured to receive an uplink data frame continuously sent by each of multiple stations, where the uplink data frame carries a transmission identifier, and a value of the transmission identifier is used to indicate a transmission priority and a service quality requirement of the uplink data frame; the generating unit is used for generating a multi-site acknowledgement message frame, wherein the multi-site acknowledgement message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating receiving state information of uplink data frames carrying the same transmission identifier; and the sending unit is used for sending the multi-site acknowledgement message frame.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
Meanwhile, because the reception state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subfield, when uplink data frames (from the same site or different sites) of different TIDs exist, a plurality of different TIDs appear in the BA information subfield, that is, uplink data frames sent by a plurality of sites are grouped according to the TIDs, each group of uplink data frames has the same TID, and further, the reception state information for each group of uplink data frames is aggregated in the BA information subfield in the multi-site acknowledgement message frame.
If the uplink data frames have the same TID and different AIDs, it is indicated that the TIDs of the uplink data frames sent by the multiple stations are the same, so that the receiving state information for the uplink data frames with the same TID is aggregated into a block, the number of times of TIDs appearing in the receiving state information can be reduced, and unnecessary overhead is saved. The AID is a unique identifier in the BSS, which is allocated to the station by the AP in the association process of the station with the AP.
In the foregoing technical solution, preferably, the BA information sub-field includes: the uplink data transmission method comprises a transmission identifier of each group of uplink data frames carrying the same transmission identifier, and an association identifier, a BA starting sequence control field and a BA bitmap field corresponding to each uplink data frame in each group of uplink data frames.
Preferably, when any identification bit in the BA bitmap field is a first value, it indicates that the corresponding uplink data frame is correctly received, and when any identification bit in the BA bitmap field is a second value, it indicates that the corresponding uplink data frame is not correctly received. For example, a value of 1 for any flag bit indicates that the corresponding uplink data frame is correctly received, and a value of 0 for any flag bit indicates that the corresponding uplink data frame is not correctly received.
In any of the foregoing technical solutions, preferably, the multi-station acknowledgement message frame further includes a BA control subfield, where one or more bits of a reserved field in the BA control subfield are used to indicate that the multi-station acknowledgement message frame will aggregate the reception status information of the uplink data frames carrying the same transmission identifier in the BA information subfield.
In the technical scheme, one or more bits of a reserved field in a BA Control subfield are used to indicate that a multi-site acknowledgement message frame aggregates reception state information of uplink data frames carrying the same transmission identifier in a BA information subfield, so that the aggregation mechanism can be indicated to a site, so that the site can correctly analyze the multi-site acknowledgement message frame.
According to the fourth aspect of the present invention, there is also provided a communication apparatus for a wireless local area network, including: a sending unit, configured to continuously send uplink data frames, where the uplink data frames carry transmission identifiers, and a value of the transmission identifier is used to indicate a transmission priority of the uplink data frames; and the receiving unit is used for receiving a multi-site confirmation message frame, wherein the multi-site confirmation message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating the receiving state information of the uplink data frames carrying the same transmission identifier.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
According to the fifth aspect of the present invention, there is also provided an access point, comprising: the communication device of the wireless local area network according to the third aspect.
According to a sixth aspect of the present invention, there is also provided a station, comprising: a communication apparatus of a wireless local area network as described in the fourth aspect above.
Through the technical scheme, the access point can aggregate the receiving state information of the uplink data frames carrying the same TID in the feedback M-BA, so that unnecessary signaling overhead can be reduced, and the utilization efficiency of the frequency spectrum can be improved.
Drawings
Fig. 1 is a diagram illustrating a frame structure of an M-BA in the related art;
fig. 2 shows a schematic flow chart of a communication method of a wireless local area network according to a first embodiment of the present invention;
fig. 3 illustrates a structural diagram of a BA information subfield in an M-BA according to an embodiment of the present invention;
fig. 4 shows a schematic block diagram of a communication device of a wireless local area network according to a first embodiment of the present invention;
fig. 5 shows a schematic block diagram of an access point according to an embodiment of the invention;
fig. 6 shows a schematic flow chart of a communication method of a wireless local area network according to a second embodiment of the present invention;
fig. 7 shows a schematic block diagram of a communication device of a wireless local area network according to a second embodiment of the present invention;
fig. 8 shows a schematic block diagram of a station according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 2 shows a schematic flow chart of a communication method of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 2, a communication method of a wireless local area network according to a first embodiment of the present invention includes:
step S20, receiving uplink data frames continuously sent by each station of the multiple stations, where the uplink data frames carry transmission identifiers, and values of the transmission identifiers are used to indicate transmission priorities and quality of service requirements of the uplink data frames.
Step S22, a multi-station acknowledgement message frame is generated, where the multi-station acknowledgement message frame includes a BA information sub-field, and the BA information sub-field aggregates the reception status information of the uplink data frames carrying the same transmission identifier.
Step S24, sending the multi-site acknowledgement message frame.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
Meanwhile, because the reception state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subfield, when uplink data frames (from the same site or different sites) of different TIDs exist, a plurality of different TIDs appear in the BA information subfield, that is, uplink data frames sent by a plurality of sites are grouped according to the TIDs, each group of uplink data frames has the same TID, and further, the reception state information for each group of uplink data frames is aggregated in the BA information subfield in the multi-site acknowledgement message frame.
If the uplink data frames have the same TID and different AIDs, it is indicated that the TIDs of the uplink data frames sent by the multiple stations are the same, so that the receiving state information for the uplink data frames with the same TID is aggregated into a block, the number of times of TIDs appearing in the receiving state information can be reduced, and unnecessary overhead is saved. The AID is a unique identifier in the BSS, which is allocated to the station by the AP in the association process of the station with the AP.
In one embodiment of the present invention, the BA information sub-field includes: the uplink data transmission method includes a transmission identifier of each group of uplink data frames carrying the same transmission identifier, and an association identifier (i.e., AID), a BA starting sequence control field, and a BA bitmap field corresponding to each uplink data frame in each group of uplink data frames. The BA starting sequence control field gives the sequence number in a group of uplink data frames, and the BA Bitmap field is used for recording whether each uplink data frame is correctly received.
As shown in fig. 3: for a plurality of uplink data frames with the same TID but different AIDs, that is, uplink data frames carrying the same TID sent by different stations, the reception status Information of the uplink data frames is aggregated in a BA Information subfield of an M-BA generated by an AP, that is, the same TID appears only once, and the AID, BA starting sequence control, and BA bitmap corresponding to each uplink data frame in the plurality of uplink data frames continuously appear.
Preferably, when any identification bit in the BA bitmap field is a first value, it indicates that the corresponding uplink data frame is correctly received, and when any identification bit in the BA bitmap field is a second value, it indicates that the corresponding uplink data frame is not correctly received. For example, a value of 1 for any flag bit indicates that the corresponding uplink data frame is correctly received, and a value of 0 for any flag bit indicates that the corresponding uplink data frame is not correctly received.
In any of the foregoing technical solutions, preferably, the multi-station acknowledgement message frame further includes a BA control subfield, where one or more bits of a reserved field in the BA control subfield are used to indicate that the multi-station acknowledgement message frame will aggregate the reception status information of the uplink data frames carrying the same transmission identifier in the BA information subfield.
In the technical scheme, one or more bits of a reserved field in a BA Control subfield are used to indicate that a multi-site acknowledgement message frame aggregates reception state information of uplink data frames carrying the same transmission identifier in a BA information subfield, so that the aggregation mechanism can be indicated to a site, so that the site can correctly analyze the multi-site acknowledgement message frame.
Among them, the execution subject of the communication method shown in fig. 2 may be a router or the like.
Fig. 4 shows a schematic block diagram of a communication device of a wireless local area network according to a first embodiment of the present invention.
As shown in fig. 4, a communication apparatus 400 of a wireless lan according to a first embodiment of the present invention includes: a receiving unit 402, a generating unit 404 and a transmitting unit 406.
The receiving unit 402 is configured to receive an uplink data frame continuously sent by each of a plurality of stations, where the uplink data frame carries a transmission identifier, and a value of the transmission identifier is used to indicate a transmission priority and a service quality requirement of the uplink data frame; the generating unit 404 is configured to generate a multi-site acknowledgement message frame, where the multi-site acknowledgement message frame includes a BA information subfield, and the BA information subfield combines reception state information of uplink data frames carrying the same transmission identifier together; the sending unit 406 is configured to send the multi-site acknowledgement message frame.
In particular implementations, the receiving unit 402 may be a receiver or an antenna; the generating unit 404 may be a signal processor, a central processing unit, a baseband processor, or the like; the transmitting unit 406 may be a transmitter or an antenna, etc.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
Meanwhile, because the reception state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subfield, when uplink data frames (from the same site or different sites) of different TIDs exist, a plurality of different TIDs appear in the BA information subfield, that is, uplink data frames sent by a plurality of sites are grouped according to the TIDs, each group of uplink data frames has the same TID, and further, the reception state information for each group of uplink data frames is aggregated in the BA information subfield in the multi-site acknowledgement message frame.
If the uplink data frames have the same TID and different AIDs, it is indicated that the TIDs of the uplink data frames sent by the multiple stations are the same, so that the receiving state information for the uplink data frames with the same TID is aggregated into a block, the number of times of TIDs appearing in the receiving state information can be reduced, and unnecessary overhead is saved. The AID is a unique identifier in the BSS, which is allocated to the station by the AP in the association process of the station with the AP.
In the foregoing technical solution, preferably, the BA information sub-field includes: the uplink data transmission method comprises a transmission identifier of each group of uplink data frames carrying the same transmission identifier, and an association identifier, a BA starting sequence control field and a BA bitmap field corresponding to each uplink data frame in each group of uplink data frames.
Preferably, when any identification bit in the BA bitmap field is a first value, it indicates that the corresponding uplink data frame is correctly received, and when any identification bit in the BA bitmap field is a second value, it indicates that the corresponding uplink data frame is not correctly received. For example, a value of 1 for any flag bit indicates that the corresponding uplink data frame is correctly received, and a value of 0 for any flag bit indicates that the corresponding uplink data frame is not correctly received.
In any of the foregoing technical solutions, preferably, the multi-station acknowledgement message frame further includes a BA control subfield, where one or more bits of a reserved field in the BA control subfield are used to indicate that the multi-station acknowledgement message frame will aggregate the reception status information of the uplink data frames carrying the same transmission identifier in the BA information subfield.
In the technical scheme, one or more bits of a reserved field in a BA Control subfield are used to indicate that a multi-site acknowledgement message frame aggregates reception state information of uplink data frames carrying the same transmission identifier in a BA information subfield, so that the aggregation mechanism can be indicated to a site, so that the site can correctly analyze the multi-site acknowledgement message frame.
Fig. 5 shows a schematic block diagram of an access point according to an embodiment of the invention.
As shown in fig. 5, an access point 500 according to an embodiment of the present invention includes: such as the communication device 400 of the wireless local area network shown in fig. 4.
Fig. 6 shows a schematic flow chart of a communication method of a wireless local area network according to a second embodiment of the present invention.
As shown in fig. 6, a communication method of a wireless local area network according to a second embodiment of the present invention includes:
step S60, continuously sending uplink data frames, where the uplink data frames carry transmission identifiers, and the values of the transmission identifiers are used to indicate the transmission priority of the uplink data frames.
Step S62, receiving a multi-station acknowledgement message frame, where the multi-station acknowledgement message frame includes a BA information sub-field, and the BA information sub-field aggregates the receiving status information of the uplink data frames carrying the same transmission identifier.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
The main body of the communication method shown in fig. 6 may be a mobile phone or a PDA (Personal Digital Assistant), or the like.
Fig. 7 shows a schematic block diagram of a communication device of a wireless local area network according to a second embodiment of the present invention.
As shown in fig. 7, a communication apparatus 700 of a wireless lan according to a second embodiment of the present invention includes: a transmitting unit 702 and a receiving unit 704.
The sending unit 702 is configured to continuously send uplink data frames, where the uplink data frames carry transmission identifiers, and a value of the transmission identifier is used to indicate a transmission priority of the uplink data frames; the receiving unit 704 is configured to receive a multi-site acknowledgement message frame, where the multi-site acknowledgement message frame includes a BA information sub-field, and the BA information sub-field aggregates receiving state information of uplink data frames carrying the same transmission identifier.
In particular implementations, the transmitting unit 702 may be a transmitter or an antenna; the receiving unit 704 may be a receiver or an antenna, etc.
In the technical scheme, because the receiving state information of the uplink data frames carrying the same transmission identifier is aggregated in the BA information subdomain in the multi-site acknowledgement message frame, when the access point feeds back the receiving state of a plurality of uplink data frames carrying the same transmission identifier (i.e. TID) sent to the site, the TID can only appear once in the BA information subdomain of the M-BAs of the plurality of uplink data frames, and the same TID does not need to appear repeatedly for multiple times, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of the frequency spectrum.
The transmission identifiers carried in different uplink data frames sent by the same site may be the same or different; the transmission identifiers carried in the uplink data frames sent by different stations may be the same or different.
Fig. 8 shows a schematic block diagram of a station according to an embodiment of the invention.
As shown in fig. 8, a station 800 according to an embodiment of the present invention includes: such as communication device 700 of a wireless local area network shown in fig. 7.
The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and the invention provides a new communication scheme of a wireless local area network, so that an access point can aggregate receiving state information of uplink data frames carrying the same TID in a feedback M-BA, thereby reducing unnecessary signaling overhead and being beneficial to improving the utilization efficiency of frequency spectrum.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A communication method for a wireless local area network, comprising:
receiving uplink data frames continuously sent by each station in a plurality of stations, wherein the uplink data frames carry transmission identifiers, and the values of the transmission identifiers are used for representing the transmission priority and the service quality requirements of the uplink data frames;
generating a multi-site confirmation message frame, wherein the multi-site confirmation message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating the receiving state information of the uplink data frames carrying the same transmission identification;
and sending the multi-site confirmation message frame.
2. The method of claim 1, wherein the BA information sub-field comprises:
the uplink data transmission method comprises a transmission identifier of each group of uplink data frames carrying the same transmission identifier, and an association identifier, a BA starting sequence control field and a BA bitmap field corresponding to each uplink data frame in each group of uplink data frames.
3. The communications method of the wireless local area network according to claim 2, wherein when any flag in the BA bitmap field is a first value, it indicates that the corresponding uplink data frame is correctly received, and when any flag in the BA bitmap field is a second value, it indicates that the corresponding uplink data frame is not correctly received.
4. The method according to any of claims 1 to 3, wherein the multi-station acknowledgement message frame further includes a BA control subfield, and one or more bits of a reserved field in the BA control subfield are used to indicate that the multi-station acknowledgement message frame will group together the reception status information of uplink data frames carrying the same transmission identifier in the BA information subfield.
5. A communication method for a wireless local area network, comprising:
continuously sending an uplink data frame, wherein the uplink data frame carries a transmission identifier, and the value of the transmission identifier is used for representing the transmission priority of the uplink data frame;
and receiving a multi-site confirmation message frame, wherein the multi-site confirmation message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating the receiving state information of the uplink data frames carrying the same transmission identification.
6. A communication apparatus of a wireless local area network, comprising:
a receiving unit, configured to receive an uplink data frame continuously sent by each of multiple stations, where the uplink data frame carries a transmission identifier, and a value of the transmission identifier is used to indicate a transmission priority and a service quality requirement of the uplink data frame;
the generating unit is used for generating a multi-site acknowledgement message frame, wherein the multi-site acknowledgement message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating receiving state information of uplink data frames carrying the same transmission identifier;
and the sending unit is used for sending the multi-site acknowledgement message frame.
7. The communications apparatus of claim 6, wherein the BA information sub-domain comprises:
the uplink data transmission method comprises a transmission identifier of each group of uplink data frames carrying the same transmission identifier, and an association identifier, a BA starting sequence control field and a BA bitmap field corresponding to each uplink data frame in each group of uplink data frames.
8. The communications apparatus of claim 7, wherein when any flag in the BA bitmap field is a first value, it indicates that the corresponding uplink data frame is correctly received, and when any flag in the BA bitmap field is a second value, it indicates that the corresponding uplink data frame is not correctly received.
9. The apparatus of any of claims 6 to 8, wherein the multi-station acknowledgement message frame further includes a BA control subfield, and one or more bits of a reserved field in the BA control subfield are used to indicate that the multi-station acknowledgement message frame will group together the reception status information of uplink data frames carrying the same transmission identifier in the BA information subfield.
10. A communication apparatus of a wireless local area network, comprising:
a sending unit, configured to continuously send uplink data frames, where the uplink data frames carry transmission identifiers, and a value of the transmission identifier is used to indicate a transmission priority of the uplink data frames;
and the receiving unit is used for receiving a multi-site confirmation message frame, wherein the multi-site confirmation message frame comprises a BA information subdomain, and the BA information subdomains are used for aggregating the receiving state information of the uplink data frames carrying the same transmission identifier.
11. An access point, comprising: communication device of a wireless local area network according to any of claims 6 to 9.
12. A station, comprising: communication device of a wireless local area network according to claim 10.
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| JP2023500081A (en) * | 2019-11-04 | 2023-01-04 | 北京小米移動軟件有限公司 | Data transmission method |
| US20240072977A1 (en) * | 2021-01-12 | 2024-02-29 | Beijing Xiaomi Mobile Software Co., Ltd. | Block acknowledgement method and device |
| EP4292326A1 (en) * | 2021-02-10 | 2023-12-20 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and devices for link adaptation feedback in wireless local area networks |
| WO2023056608A1 (en) * | 2021-10-08 | 2023-04-13 | 北京小米移动软件有限公司 | Communication method and communication apparatus |
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