CN102769925B - The sending method and device of a kind of control frame - Google Patents
The sending method and device of a kind of control frame Download PDFInfo
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- CN102769925B CN102769925B CN201110114169.6A CN201110114169A CN102769925B CN 102769925 B CN102769925 B CN 102769925B CN 201110114169 A CN201110114169 A CN 201110114169A CN 102769925 B CN102769925 B CN 102769925B
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- 238000005259 measurement Methods 0.000 claims abstract description 88
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Abstract
The present invention discloses a kind of sending method of control frame, including：When carrying out channel information measurement, the queue categories transmission control frame of channel is arrived using particular queue classification and/or competition；The present invention also provides a kind of dispensing device of control frame.Technique according to the invention scheme, being capable of transmission control frame during progress channel information measurement.
Description
Technical field
The present invention relates to the sending method and device of wireless communication field, more particularly to a kind of control frame.
Background technology
At present, WLAN (WLAN, Wireless Local Area Networks) is fast in field of wireless
Speed development, the demand covered to WLAN is also growing, requirement to handling capacity also more and more higher.U.S. electric and electronic engineering
In the IEEE802.11 groups of Shi Xiehui industrial specifications, the series of standards such as 802.11a, 802.11b and 802.11g are successively defined
Initial WLAN technologies；Other task groups are then occurred in that successively again, are directed to developing and are related to existing 802.11 technological improvement
Specification, such as 802.11n task groups propose the requirement of high-throughput (HT, High Throughput), it would be preferable to support up to
600Mbps data rate, 802.11ac task groups are it is further proposed that gigabit handling capacity (VHT, Very High
Throughput concept), by introducing bigger channel width by data rate lifting to 1Gbps.
In 802.11 task groups, an access point (AP, Access Point) and the multiple websites associated with AP
(STA, Station) constitutes a Basic Service Set (BSS, Basic Service Set).802.11 task groups define two
Plant operator scheme：Distributed coordination function (DCF, Distributed Coordination Function) and point coordination function
(PCF, Point Coordination Function), and for the improvement of both operator schemes, i.e., enhanced distribution
Coordinate access function (EDCA, Enhanced Distributed Channel Access) and Hybrid Coordination Function control channel
Access function (HCCA, Hybrid Coor Dination Function Controlled Channel Access).Wherein,
DCF is most basic operator scheme, utilizes Carrier Sense Multiple Access (CSMA/CA, the CSMA with conflict avoidance
Collision Avoidance) mechanism, make multiple website sharing wireless channels；EDCA is enhanced operator scheme, by upper strata
Data are mapped to four different queue categories (AC, Access Categories)：AC_VO(AC_Voice)、AC_VI(AC_
Video)、AC_BE(AC_BestEffort)、AC_BK(AC_Background)；Each queue categories are believed using different competitions
The parameter in road distinguishes priority.EDCA utilizes CSMA/CA mechanism, makes multiple different priorities queue sharing wireless channels, and
Preengage a transmission opportunity (TXOP, Transmission Opportunity).Different priorities queue obtains transmission opportunity
Basic process is：Each queue is accessed in channel idle using different backoff intervals plus arbitrary competition backoff window
Channel, to reduce collision.
In the prior art, Multiple Input Multiple Output (MIMO, Multiple Input Multiple Output) is introduced to change
Kind systematic function.In order to ensure that data reliable and effective can be sent, initiator needs to measure the letter of one or more recipients
Road situation, and configured transmission is configured according to the channel information measured.
Fig. 1 is the schematic flow sheet of feedback of channel information in the prior art, as shown in figure 1, in order to carry out channel information
Measurement, defines new Frame switch sequence, needs to carry out channel information for notice specifically, the measurement side of channel information is sent
Empty data adver frame (NDPA, Null Data Packet Announcement) frame of the website of feedback, and send knot in NDPA
The short interFrameGap (SIFS, Short Interframe Space) of beam sends null packet (NDP, Null Data afterwards
Packet), channel is replied after NDPA and NDP SIFS is harvested in the first feedback of channel information side indicated in acquiescence NDPA
Feedback information (Sounding Feedback).If multiple channel feedback sides, in addition to first feedback side's acquiescence feedback, its
His feedback of channel information side needs the poll (Sounding Poll) according to the measurement side of channel information come feedback channel information.
In the prior art, regulation management frame is sent using AC_VO queue categories, when using request send (RTS,
Request To Send) or clear to send (CTS, Clear To Send) as Frame switch sequence the first frame when, RTS or
CTS should inherit queue used in follow-up data in same Frame switch sequence.But, it is existing after channel information measurement is introduced
It is not specified by technology for queue used in the notification frame (being, for example, NDPA) of channel information measurement.
The content of the invention
In view of this, it is a primary object of the present invention to provide the sending method and device of a kind of control frame, channel is carried out
Being capable of transmission control frame during information measurement.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The present invention provides a kind of sending method of control frame, including：
When carrying out channel information measurement, sent and controlled to the queue categories of channel using particular queue classification and/or competition
Frame.
In the above method, the control frame is the multiframe switching sequence for carrying out channel information measurement and channel information reporting
First frame in row, is used as the notification frame for notifying feedback of channel information side.
In the above method,
The particular queue classification is：Pre-defined queue categories, or surveyed using with follow-up channel information to be received
Measure the radio frames identical queue categories of report；
The use particular queue classification transmission control frame is：It is independent to carry out channel competition using particular queue classification,
Transmission control frame on the channel competed, or use the particular queue classification transmission control frame for having competed channel.
In the above method,
It is described to be using the queue categories transmission control frame competed to channel：Where follow-up data to be sent or management frame
Queue categories competitive channel, where the transmission control frame on the channel competed, or irrelevant data or management frame
Queue categories competitive channel, the transmission control frame on the channel competed.
In the above method,
In the progress channel information measurement and channel information reporting, belong to its of same sender with the control frame
Its radio frames, using with the control frame identical queue categories；
It is described progress channel information measurement and channel information reporting before, carry out other Frame switch when, using with it is described
Control frame identical queue categories.
In the above method, the use particular queue classification transmission control frame is：
Pre-defined AC_VO is the queue categories of the empty data adver frame (NDPA) of transmission；
When channel information of the access point (AP) without Basic Service Set (BSS) interior certain site or the letter of the website measured
When road information has failed, queue categories AC_VO competitive channels；
AP sends NDPA on the channel competed using queue categories AC_VO, and the channel information for carrying out the website is surveyed
Amount.
In the above method, the use particular queue classification transmission control frame is：
The queue categories that pre-defined AC_VI is transmission NDPA；
When having targeted sites STA1 data in AP queue categories AC_VI, queue categories AC_VI competitive channels；
After queue categories AC_VI competitions to channel, when AP does not have targeted sites STA1 channel information, queue is being used
NDPA is sent on the channel that classification AC_VI is competed, targeted sites STA1 channel information measurement is carried out.
In the above method,
This method also includes：Targeted sites STA1 data are sent on the channel competed using queue categories AC_VI；
After the data that targeted sites STA1 is sent on the channel competed using queue categories AC_VI, the method
Also include：AP sends NDPA using queue categories AC_VI, carries out the channel information measurement of other websites.
In the above method, the use particular queue classification transmission control frame is：
Pre-defined AC_VO is the queue categories of feedback of channel information frame, and does not predefine NDPA queue categories；
When having targeted sites STA1 data in AP queue categories AC_VO, queue categories AC_VO competitive channels；
Queue categories AC_VO is competed to after channel, when AP does not have targeted sites STA1 channel information, is using queue class
NDPA is sent on the channel that other AC_VO is competed, targeted sites STA1 channel information measurement is carried out.
In the above method,
This method also includes：Targeted sites STA1 data are sent on the channel competed using queue categories AC_VO；
In the above method, the queue categories transmission control frame using competition to channel is：
Channel is arrived in AP queue categories AC_BE competitions, and AP does not have a targeted sites STA1 channel information or measured
When targeted sites STA1 channel information has failed, AP sends NDPA using the queue categories AC_BE of competition to channel, carries out
Targeted sites STA1 channel information measurement.
In the above method,
This method also includes：Targeted sites STA1 data are sent using the queue categories AC_VI of competition to channel；
The queue categories AC_VI using competition to channel is sent after targeted sites STA1 data, and this method is also
Including：AP sends NDPA using the queue categories AC_VI of competition to channel, carries out the channel information measurement of other websites.
In the above method, the queue categories transmission control frame using competition to channel is：
There is targeted sites STA1 management frame in AP queue categories AC_VO, letter is arrived in AP queue categories AC_VO competitions
Road, when AP does not have the channel information STA1 of targeted sites or the targeted sites STA1 measured channel information to fail,
AP sends NDPA before management frame transmission using the queue categories AC_VO of competition to channel, carries out targeted sites STA1 letter
Road information measurement.
In the above method, the queue categories transmission control frame using competition to channel is：
When the data for having targeted sites STA1 in AP queue categories AC_VI, and there are targeted sites in queue categories AC_VO
There are targeted sites STA3 data in STA2 data, and queue categories AC_BK, it is necessary to by STA1, STA2 and STA3 data
Packing, but channel information or STA1 without STA1 and STA2 and STA2 channel information is when having failed, in the queue class
Other AC_VI is competed to after channel, and AP sends NDPA using the queue categories AC_VI of competition to channel, progress STA1's and STA2
Channel information measurement.
In the above method, the queue categories transmission control frame using competition to channel is：
When there are targeted sites AP data in STA1 queue categories AC_VO, arrived in STA1 queue categories AC_VO competitions
After channel, STA1 sends NDPA using the queue categories AC_VO of competition to channel before data is transmitted, carries out AP channel letter
Breath measurement.
In the above method, the queue categories transmission control frame using competition to channel is：
In independent BSS (IBSS), when having the data that targeted sites are STA2 in STA1 queue categories AC_VO,
STA1 queue categories AC_VO is competed to after channel, and STA1 is before data is transmitted using the queue categories AC_ of competition to channel
VO sends NDPA, carries out STA2 channel information measurement.
In the above method, the use particular queue classification and competition are to the queue categories transmission control frame of channel：
Pre-defined AC_VO is transmits NDPA queue categories, and the channel that AP measures STAs using AC_VO queue categories is believed
Breath；
When have in queue categories AC_VI targeted sites be STA1 data, and queue categories AC_VI competition arrive channel when,
If AP does not have STA1 channel information or the STA1 measured channel information to fail, AP is used before data is transmitted
The queue categories AC_VI for competing channel sends NDPA, carries out STA1 channel information measurement.
The present invention also provides a kind of dispensing device of control frame, and the dispensing device of the control frame is used for, and carries out channel information
During measurement, the queue categories transmission control frame of channel is arrived using particular queue classification and/or competition.
In the dispensing device of above-mentioned control frame, the control frame is for carrying out channel information measurement and channel information reporting
Multiframe turnaround sequence in first frame, be used as notify feedback of channel information side notification frame.
In the dispensing device of above-mentioned control frame,
The particular queue classification is pre-defined queue categories, or is used and follow-up channel information measurement to be received
The radio frames identical queue categories of report；
The use particular queue classification transmission control frame is：It is independent to carry out channel competition using particular queue classification,
Transmission control frame on the channel competed, or use the particular queue classification transmission control frame for having competed channel.
In the dispensing device of above-mentioned control frame,
It is described to be using the queue categories transmission control frame competed to channel：Where follow-up data to be sent or management frame
Queue categories competitive channel, where the transmission control frame on the channel competed, or irrelevant data or management frame
Queue categories competitive channel, the transmission control frame on the channel competed.
The sending method and device for the control frame that the present invention is provided, when carrying out channel information measurement, use particular queue class
Queue categories transmission control frame that is other and/or competing to channel, can realize to be used as during channel information measurement is carried out and lead to
Know the transmission of the control frame of frame, make up and be not specified by the prior art for queue used in the notification frame of channel information measurement
Blank.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of feedback of channel information in the prior art；
Fig. 2 is the schematic flow sheet of the embodiment one for the sending method that the present invention realizes control frame；
Fig. 3 is the schematic flow sheet of the embodiment two for the sending method that the present invention realizes control frame；
Fig. 4 is the schematic flow sheet of the embodiment three for the sending method that the present invention realizes control frame；
Fig. 5 is the schematic flow sheet of the example IV for the sending method that the present invention realizes control frame.
Embodiment
The present invention basic thought be：When carrying out channel information measurement, channel is arrived using particular queue classification and/or competition
Queue categories transmission control frame.
The present invention is described in further detail again below by drawings and the specific embodiments.
The present invention provides a kind of sending method of control frame, and this method includes：When carrying out channel information measurement, using specific
The queue categories transmission control frame of channel is arrived in queue categories and/or competition.
Wherein, refer to that pre-defined queue categories must be used, which to send, to be controlled using particular queue classification transmission control frame
Frame, i.e., using fixed queue categories transmission control frame；And referred to using the queue categories transmission control frame of competition to channel
In channel competition, using competition to channel queue categories transmission control frame, therefore transmission control frame queue categories not
It is fixed.
Wherein, control frame refer to for carry out channel information measurement and channel information reporting multiframe turnaround sequence in head
Frame, control frame is the notification frame for notifying feedback of channel information side；When carrying out channel information measurement and channel information reporting,
Belong to other radio frames of same sender with the control frame, using with the control frame identical queue categories, here its
His radio frames can be Sounding Poll frames.
Wherein, the queue categories that the particular queue classification pre-defines for wireless local area network (WLAN) system, or particular queue class
The radio frames identical queue categories with follow-up channel information measurement report to be received are not used；
It is using particular queue classification transmission control frame：It is independent to carry out channel competition using particular queue classification, in competition
To channel on transmission control frame, or using having competed the particular queue classification transmission control frame of channel；Here, queue is worked as
When there is no other data latencies transmission in classification, channel competition independently can be carried out using the particular queue classification, in competition
To channel on transmission control frame；When there is other data transfers in channel, it is competing that the use particular queue classification carries out channel
Strive, the transmission control frame on the channel competed.
It is described to be using the queue categories transmission control frame competed to channel：Where follow-up data to be sent or management frame
Queue categories competitive channel, where the transmission control frame on the channel competed, or irrelevant data or management frame
Queue categories competitive channel, the transmission control frame on the channel competed；Wherein, follow-up data to be sent or management frame refer to
These data to be sent or the targeted sites of management frame are identical with the targeted sites of channel information measurement；Irrelevant data
Or management frame refers to that these data or the targeted sites of management frame and the targeted sites of channel information measurement are different.For example, when hair
After the data for having sent A websites, still there is the time to carry out the channel information measurement of B websites, can now carry out the channel letter of B websites
Breath measurement.
Here, before channel information measurement and channel information reporting is carried out, when carrying out other Frame switch, using with it is described
Control frame identical queue categories, wherein other frames can be RTS, CTS etc..
Embodiment one
Fig. 2 is the schematic flow sheet of the embodiment one for the sending method that the present invention realizes control frame, in the present embodiment, one
In individual BSS, there are three websites：AP, STA1 and STA2, this method comprise the following steps：
Step 201, AP pre-defines queue categories of the queue categories AC_VO for transmission NDPA.
Step 202, when a certain period not having business between three websites, AP does not have STA1 and STA2 channel information
Or the STA1 and STA2 channel information measured has failed, then queue categories AC_VO competitive channels.
Step 203, AP sends NDPA on the channel competed using queue categories AC_VO, carries out STA1's and STA2
Channel information measurement；
Specifically, after competitive channel, NDPA is sent on the channel competed using queue categories AC_VO, for carrying out
STA1 and STA2 channel information measurement；Here, follow-up Sounding Poll frames are used and the NDPA identicals queue class
Not；In order that data transfer is relatively reliable in TXOP, RTS or CTS, the RTS or CTS can be sent before channel information measurement
Using with NDPA identical queue categories AC_VO.
Embodiment two
Fig. 3 is the schematic flow sheet of the embodiment two for the sending method that the present invention realizes control frame, in the present embodiment, one
In individual BSS, there are six websites：AP and five STAs, this method comprises the following steps：
Step 301, AP pre-defines queue categories of the queue categories AC_VI for transmission NDPA.
Step 302, when a certain period there is no business between AP and each website, channel letters of the AP without each STAs
Breath or channel information have failed, then queue categories AC_VI competitive channels.
Step 303, AP sends NDPA on the channel competed using queue categories AC_VI, carries out the letter of five websites
Road information measurement；
Specifically, after competitive channel, NDPA is sent on the channel competed using queue categories AC_VI, for carrying out
The channel information measurement of five websites；Here, follow-up Sounding Poll frames are used and the NDPA identicals queue class
Not, but in a TXOP measurement of three channel informations can only be carried out, is opened in next TXOP from Sounding Poll
The NDPA that beginning is carried out in Sounding Poll and first TXOP in the measurement of follow-up channel information, two TXOP makes
Use identical queue categories；In order that data transfer is relatively reliable in TXOP, can be sent before channel information measurement RTS or
CTS, the RTS or CTS are used and NDPA identical queue categories AC_VI.
Embodiment three
Fig. 4 is the schematic flow sheet of the embodiment three for the sending method that the present invention realizes control frame, in the present embodiment, one
In individual BSS, there are three websites：AP, STA1 and STA2, this method comprise the following steps：
Step 401, AP pre-defines queue categories of the queue categories AC_VI for transmission NDPA.
Step 402, there are targeted sites STA1 data, queue categories AC_VI competition letters in AP queue categories AC_VI
Road, when AP does not have targeted sites STA1 channel information, is sent on the channel competed using queue categories AC_VI
NDPA, carries out targeted sites STA1 channel information measurement；
Specifically, there is targeted sites STA1 data in AP queue categories AC_VI, now queue categories AC_VI is competed
Channel；After queue categories AC_VI competitions to channel, if AP has targeted sites STA1 channel information, it is possible to directly exist
Targeted sites STA1 data are sent on the channel competed using queue categories AC_VI；
, can be first in the letter competed using queue categories AC_VI if AP does not have targeted sites STA1 channel information
NDPA is sent on road, targeted sites STA1 channel information measurement is carried out, then in the channel competed using queue categories AC_VI
The upper data for sending targeted sites STA1.
Step 403, NDPA is sent using queue categories AC_VI, carries out STA2 channel information measurement；
Specifically, after STA1 data transfer is finished, if also time enough carries out STA2 channel information survey
Measure, then AP can use queue categories AC_VI to send NDPA, the channel information measurement for carrying out STA2.
Example IV
Fig. 5 is the schematic flow sheet of the example IV for the sending method that the present invention realizes control frame, in the present embodiment, one
In individual BSS, there are three websites：AP, STA1 and STA2, this method comprise the following steps：
Step 501, AP pre-defines queue categories of the queue categories AC_VO for feedback of channel information frame, and does not predefine
NDPA queue categories.
Step 502, queue categories AC_VO competitive channels, when AP does not have targeted sites STA1 channel information, are being used
NDPA is sent on the channel that queue categories AC_VI is competed, targeted sites STA1 channel information measurement is carried out；
Specifically, there is targeted sites STA1 data in AP queue categories AC_VO, now queue categories AC_VO is competed
Channel；After queue categories AC_VO competitions to channel, if AP has targeted sites STA1 channel information, it is possible to directly
Targeted sites STA1 data are sent on the channel competed using queue categories AC_VO；
, can be first in the letter competed using queue categories AC_VO if AP does not have targeted sites STA1 channel information
Send NDPA on road, carry out targeted sites STA1 channel information measurement, then competed again using queue categories AC_VO
Targeted sites STA1 data are sent on channel.
Step 503, NDPA is sent using with feedback of channel information frame identical queue categories AC_VO, carries out STA2 letter
Road information measurement；
Specifically, after STA1 data transfer is finished, if also time enough carries out STA2 channel information survey
Amount, due to not pre-defining transmission NDPA queue categories, then AP can be used and feedback of channel information frame identical queue
Classification AC_VO sends NDPA, the channel information measurement for carrying out STA2.
The above embodiments one to example IV is to be directed to the situation using particular queue classification transmission control frame.
Embodiment five
For example, in a BSS, there are any number of site STA s, there are targeted sites in AP queue categories AC_BE
STA1 data；
Channel is arrived in AP queue categories AC_BE competitions, but AP does not have STA1 channel information or the STA1's measured
Channel information has failed, thus AP in order to make data with a suitable modulation and encoding scheme (MCS,
Modulation and Coding Scheme) transmit, selective can before data is transmitted, and AP arrives channel using competition
Queue categories AC_BE send NDPA, the channel information measurement for carrying out STA1；
Further according to the STA1 measured channel information, suitable MCS transmission data are selected；In order that obtaining data in TXOP
Transmission it is relatively reliable, RTS or CTS can be sent before channel information measurement, when sending RTS or CTS, using with NDPA phases
Same queue categories AC_BE.
Embodiment six
For example, in a BSS, there is three websites：AP, STA1 and STA2, have target in AP queue categories AC_VI
The data of site STA 1, AP does not have STA2 data；
When channel is arrived in queue categories AC_VI competitions, if AP has STA1 channel information, it is possible to use competition to letter
The queue categories AC_VI in road sends STA1 data；If AP does not have STA1 channel information, AP can be first using competition to letter
The queue categories AC_VI in road sends NDPA, for carrying out STA1 channel information measurement, then transmits STA1 data；
After STA1 data transfer is finished, if also time enough carries out STA2 channel information measurement, AP can
To send NDPA, the channel information measurement for carrying out STA2 using the queue categories AC_VI of competition to channel.
Embodiment seven
For example, in a BSS, there are any number of site STA s, there are targeted sites in AP queue categories AC_VO
Channel is arrived in STA1 management frame, AP queue categories AC_VO competitions, but AP does not have STA1 channel information or the STA1 measured
Channel information failed, therefore AP is in order to make data be transmitted with a suitable MCS, and selective can be in management
Before frame transmission NDPA, the channel information measurement for carrying out STA1 are sent using the queue categories AC_VO of competition to channel；Again
According to the STA1 measured channel information, suitable MCS transfer managements frame is selected；In order that management frame transmission is more in TXOP
Plus it is reliable, RTS or CTS can be sent before channel information measurement, when sending RTS or CTS, using with NDPA identicals
Queue categories AC_VO.
Embodiment eight
For example, in a BSS, having in any number of site STA s, AP queue categories AC_VI has targeted sites STA1
Data, and have targeted sites STA2 data in queue categories AC_VO, and have targeted sites STA3 in queue categories AC_BK
Data；
When channel is arrived in AP queue categories AC_VI competitions, it is necessary to which STA1, STA2 and STA3 data are packed, and make
Sent out with multi-user's multiple-input and multiple-output (MU-MIMO, Multi-user Multiple Input, Multiple Output)
Go, but the channel information of channel information or STA1 and STA2 without STA1 and STA2 has failed, the channel for having STA3 is believed
Breath or STA3 channel information do not fail, therefore in order to ensure reliable data transmission, can only carry out before data is transmitted
STA1 and STA2 channel information measurement；
The NDPA that AP is sent using the queue categories AC_VI of competition to channel, the channel for carrying out STA1 and STA2 is believed
Breath measurement；Follow-up Sounding Poll frames are also the queue categories AC_VI using competition to channel；In order that obtaining in TXOP
Data transfer is relatively reliable, and RTS or CTS can be sent before channel information measurement, when sending RTS or CTS, using with
NDPA identical queue categories AC_VI.
Embodiment nine
For example, in BSS, there is the data that targeted sites are AP, STA1 queue categories in STA1 queue categories AC_VO
Channel is arrived in AC_VO competitions, but STA1 does not have AP channel information or the AP measured channel information to fail, therefore
STA1, can be before data is transmitted using the queue of competition to channel in order to make data be transmitted with a suitable MCS
Classification AC_VO sends NDPA, the channel information measurement for carrying out AP；
Further according to the AP measured channel information, suitable MCS transmission data are selected；Passed in order that obtaining data in TXOP
It is defeated relatively reliable, RTS or CTS can be sent before channel information measurement, when send RTS or CTS when, using with NDPA phases
Same queue categories AC_VO.
Embodiment ten
For example, in independent BSS (IBSS, Independent BSS), having target in STA1 queue categories AC_VO
Website is STA2 data, and channel is arrived in STA1 queue categories AC_VO competitions, but STA1 does not have STA2 channel information or survey
The STA2 measured channel information has failed, therefore STA1 is in order to make data be transmitted with a suitable MCS, Ke Yi
Before data transfer NDPA, the channel information measurement for carrying out STA2 are sent using the queue categories AC_VO of competition to channel；
Further according to the STA2 measured channel information, suitable MCS transmission data are selected；In order that obtaining data in TXOP
Transmission it is relatively reliable, RTS or CTS can be sent before channel information measurement, when transmission RTS or CTS when, using with NDPA
Identical queue categories AC_VO.
The above embodiments five to embodiment ten is to be directed to the situation using the queue categories transmission control frame competed.
Embodiment 11
For example, in one bss, there is AP and 20 STAs, and pre-defined AC_VO is transmission NDPA team
Row classification；The use AC_VO queue categories in AP cycles measure STAs channel information, at a time, in queue categories AC_VI
There are the data that targeted sites are STA1, channel is arrived in queue categories AC_VI competitions；AP does not have a STA1 channel information or measured
STA1 channel information has failed, and AP is in order to make data be transmitted with a suitable MCS, and selective can be in data
Before transmission NDPA, the channel information measurement for carrying out STA1 are sent using the queue categories AC_VI of competition to channel；
Further according to the STA1 measured channel information, suitable MCS transmission data are selected；In order that obtaining data in TXOP
Transmission it is relatively reliable, RTS or CTS can be sent before channel information measurement, when transmission RTS or CTS when, using with NDPA
Identical queue categories AC_VI.
Embodiment 11 is for simultaneously using particular queue classification and the feelings of the queue categories transmission control frame competed
Condition.
To realize the above method, the present invention also provides a kind of dispensing device of control frame, and the dispensing device of the control frame is used
In, carry out channel information measurement when, use particular queue classification and/or competition to channel queue categories transmission control frame.
The control frame is the first frame in the multiframe turnaround sequence for carrying out channel information measurement and channel information reporting,
It is used as the notification frame for notifying feedback of channel information side.
The particular queue classification is pre-defined queue categories, or the particular queue classification use with it is follow-up waiting
The radio frames identical queue categories of the channel information measurement report of receipts；
The use particular queue classification transmission control frame is：It is independent to carry out channel competition using particular queue classification,
Transmission control frame on the channel competed, or use the particular queue classification transmission control frame for having competed channel.
It is described to be using the queue categories transmission control frame competed to channel：Where follow-up data to be sent or management frame
Queue categories competitive channel, where the transmission control frame on the channel competed, or irrelevant data or management frame
Queue categories competitive channel, the transmission control frame on the channel competed.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all
Any modifications, equivalent substitutions and improvements made within the spirit and principles in the present invention etc., should be included in the protection of the present invention
Within the scope of.
Claims (19)
1. a kind of sending method of control frame, it is characterised in that this method includes：
When carrying out channel information measurement, the queue categories transmission control frame of channel is arrived using particular queue classification and/or competition；
Wherein, the particular queue classification is：Pre-defined queue categories, or surveyed using with follow-up channel information to be received
Measure the radio frames identical queue categories of report；
The use particular queue classification transmission control frame is：It is independent to carry out channel competition using particular queue classification, in competition
To channel on transmission control frame, or using having competed the particular queue classification transmission control frame of channel.
2. according to the method described in claim 1, it is characterised in that the control frame is for carrying out channel information measurement and letter
First frame in the multiframe turnaround sequence of road information report, is used as the notification frame for notifying feedback of channel information side.
3. according to the method described in claim 1, it is characterised in that
It is described to be using the queue categories transmission control frame competed to channel：Team where follow-up data to be sent or management frame
Row classification competitive channel, the queue where the transmission control frame on the channel competed, or irrelevant data or management frame
Classification competitive channel, the transmission control frame on the channel competed.
4. method according to claim 2, it is characterised in that
In the progress channel information measurement and channel information reporting, other nothings of same sender are belonged to the control frame
Line frame, using with the control frame identical queue categories；
It is described progress channel information measurement and channel information reporting before, carry out other Frame switch when, using with the control
Frame identical queue categories.
5. according to any described method in claim 1 to 2, it is characterised in that the use particular queue classification sends control
Frame processed is：
Pre-defined AC_VO is the queue categories of the empty data adver frame (NDPA) of transmission；
When the channel letter of channel information of the access point (AP) without Basic Service Set (BSS) interior certain site or the website measured
When breath has failed, queue categories AC_VO competitive channels；
AP sends NDPA on the channel competed using queue categories AC_VO, carries out the channel information measurement of the website.
6. according to any described method in claim 1 to 2, it is characterised in that the use particular queue classification sends control
Frame processed is：
The queue categories that pre-defined AC_VI is transmission NDPA；
When having targeted sites STA1 data in AP queue categories AC_VI, queue categories AC_VI competitive channels；
After queue categories AC_VI competitions to channel, when AP does not have targeted sites STA1 channel information, queue categories are being used
NDPA is sent on the channel that AC_VI is competed, targeted sites STA1 channel information measurement is carried out.
7. method according to claim 6, it is characterised in that
This method also includes：Targeted sites STA1 data are sent on the channel competed using queue categories AC_VI；
After the data that targeted sites STA1 is sent on the channel competed using queue categories AC_VI, the method is also wrapped
Include：AP sends NDPA using queue categories AC_VI, carries out the channel information measurement of other websites.
8. according to any described method in claim 1 to 2, it is characterised in that the use particular queue classification sends control
Frame processed is：
Pre-defined AC_VO is the queue categories of feedback of channel information frame, and does not predefine NDPA queue categories；
When having targeted sites STA1 data in AP queue categories AC_VO, queue categories AC_VO competitive channels；
Queue categories AC_VO is competed to after channel, when AP does not have targeted sites STA1 channel information, is using queue categories
NDPA is sent on the channel that AC_VO is competed, targeted sites STA1 channel information measurement is carried out.
9. method according to claim 8, it is characterised in that
This method also includes：Targeted sites STA1 data are sent on the channel competed using queue categories AC_VO.
10. according to any described method in claim 1 or 2 or 4, it is characterised in that the team using competition to channel
Row classification transmission control frame is：
Channel, and the target that AP does not have targeted sites STA1 channel information or measured are arrived in AP queue categories AC_BE competitions
When the channel information of site STA 1 has failed, AP sends NDPA using the queue categories AC_BE of competition to channel, carries out target
The channel information measurement of site STA 1.
11. method according to claim 10, it is characterised in that
This method also includes：Targeted sites STA1 data are sent using the queue categories AC_VI of competition to channel；
The queue categories AC_VI using competition to channel is sent after targeted sites STA1 data, and this method also includes：
AP sends NDPA using the queue categories AC_VI of competition to channel, carries out the channel information measurement of other websites.
12. according to any described method in claim 1 or 2 or 4, it is characterised in that the team using competition to channel
Row classification transmission control frame is：
There is targeted sites STA1 management frame in AP queue categories AC_VO, channel is arrived in AP queue categories AC_VO competitions,
When AP does not have the channel information STA1 of targeted sites or the targeted sites STA1 measured channel information to fail, AP exists
NDPA is sent using the queue categories AC_VO of competition to channel before management frame transmission, targeted sites STA1 channel letter is carried out
Breath measurement.
13. according to any described method in claim 1 or 2 or 4, it is characterised in that the team using competition to channel
Row classification transmission control frame is：
When the data for having targeted sites STA1 in AP queue categories AC_VI, and there is targeted sites STA2 in queue categories AC_VO
Data, and have targeted sites STA3 data in queue categories AC_BK, it is necessary to which STA1, STA2 and STA3 data are packed,
But when the channel information of channel information or STA1 and STA2 without STA1 and STA2 has failed, in the queue categories AC_
VI is competed to after channel, and AP sends NDPA, progress STA1 and STA2 channel letter using the queue categories AC_VI of competition to channel
Breath measurement.
14. according to any described method in claim 1 or 2 or 4, it is characterised in that the team using competition to channel
Row classification transmission control frame is：
When there are targeted sites AP data in STA1 queue categories AC_VO, channel is arrived in STA1 queue categories AC_VO competitions
Afterwards, STA1 sends NDPA using the queue categories AC_VO of competition to channel before data is transmitted, and the channel information for carrying out AP is surveyed
Amount.
15. according to any described method in claim 1 or 2 or 4, it is characterised in that the team using competition to channel
Row classification transmission control frame is：
In independent BSS (IBSS), when having the data that targeted sites are STA2 in STA1 queue categories AC_VO, STA1's
Queue categories AC_VO is competed to after channel, and STA1 is sent using the queue categories AC_VO of competition to channel before data is transmitted
NDPA, carries out STA2 channel information measurement.
16. according to any described method in claims 1 to 3, it is characterised in that the use particular queue classification and competition
Queue categories transmission control frame to channel is：
Pre-defined AC_VO is transmits NDPA queue categories, and AP measures STAs channel information using AC_VO queue categories；
When have in queue categories AC_VI targeted sites be STA1 data, and queue categories AC_VI competition arrive channel when, if
AP does not have STA1 channel information or the STA1 measured channel information to fail, and AP is before data is transmitted using competition
Queue categories AC_VI to channel sends NDPA, carries out STA1 channel information measurement.
17. a kind of dispensing device of control frame, it is characterised in that the dispensing device of the control frame includes being used to carry out channel information
It is independent to carry out channel competition, the transmission control frame on the channel competed using particular queue classification during measurement, or use
The particular queue classification of channel is competed, and/or, use the module of the queue categories transmission control frame of competition to channel；
Wherein, the particular queue classification is pre-defined queue categories, or is surveyed using with follow-up channel information to be received
Measure the radio frames identical queue categories of report.
18. dispensing device according to claim 17, it is characterised in that the control frame is for carrying out channel information survey
First frame in the multiframe turnaround sequence of amount and channel information reporting, is used as the notification frame for notifying feedback of channel information side.
19. dispensing device according to claim 17, it is characterised in that
It is described to be using the queue categories transmission control frame competed to channel：Team where follow-up data to be sent or management frame
Row classification competitive channel, the queue where the transmission control frame on the channel competed, or irrelevant data or management frame
Classification competitive channel, the transmission control frame on the channel competed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110114169.6A CN102769925B (en) | 2011-05-04 | 2011-05-04 | The sending method and device of a kind of control frame |
| PCT/CN2012/074560 WO2012149874A1 (en) | 2011-05-04 | 2012-04-23 | Method and device for sending control frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110114169.6A CN102769925B (en) | 2011-05-04 | 2011-05-04 | The sending method and device of a kind of control frame |
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| Publication Number | Publication Date |
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| CN102769925A CN102769925A (en) | 2012-11-07 |
| CN102769925B true CN102769925B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110114169.6A Expired - Fee Related CN102769925B (en) | 2011-05-04 | 2011-05-04 | The sending method and device of a kind of control frame |
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| Country | Link |
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| WO (1) | WO2012149874A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112018000068A2 (en) | 2015-07-02 | 2018-09-11 | Huawei Technologies Co., Ltd. | method, access point and station for transmitting channel status information |
| GB2540213B (en) | 2015-07-10 | 2018-02-28 | Canon Kk | Trigger frames adapted to packet-based policies in an 802.11 network |
| CN114340011A (en) * | 2021-12-31 | 2022-04-12 | 深圳市联平半导体有限公司 | Data processing method, data processing device, computer readable storage medium and processor |
Citations (2)
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| CN1922830A (en) * | 2004-01-08 | 2007-02-28 | 美商内数位科技公司 | Packet scheduling in a wireless local area network |
| CN101252379A (en) * | 2008-04-16 | 2008-08-27 | 中国科学院计算技术研究所 | Wireless network medium access control system and channel parameter regulation method |
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2011
- 2011-05-04 CN CN201110114169.6A patent/CN102769925B/en not_active Expired - Fee Related
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- 2012-04-23 WO PCT/CN2012/074560 patent/WO2012149874A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1922830A (en) * | 2004-01-08 | 2007-02-28 | 美商内数位科技公司 | Packet scheduling in a wireless local area network |
| CN101252379A (en) * | 2008-04-16 | 2008-08-27 | 中国科学院计算技术研究所 | Wireless network medium access control system and channel parameter regulation method |
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| "Protocol for SU and MU Sounding Feedback";Simone Meilin，etc.;《IEEE 802.11-10/1091r0》;20100930;第2页至第5页 * |
| "Undesirable service differentiation in future WLANs";Srikant Kuppa，Shashidhar Rao Gandham，Ravi Prakash;《IEEE》;20041231;全文 * |
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| Publication number | Publication date |
|---|---|
| WO2012149874A1 (en) | 2012-11-08 |
| CN102769925A (en) | 2012-11-07 |
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