CN102761399B - The transmission method and system of a kind of channel feedback information - Google Patents
The transmission method and system of a kind of channel feedback information Download PDFInfo
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- CN102761399B CN102761399B CN201110107549.7A CN201110107549A CN102761399B CN 102761399 B CN102761399 B CN 102761399B CN 201110107549 A CN201110107549 A CN 201110107549A CN 102761399 B CN102761399 B CN 102761399B
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides the transmission method and system of a kind of channel feedback information, including：After transmitting station confirms to need receiving station to resend part or all of channel feedback information, when current point in time is not less than the time end point that transmission time threshold value is pointed to, transmitting station sends radio frames to receiving station, and request receiving station resends part or all of channel feedback information in subscription time；The time end point that the subscription time carried in radio frames is pointed to allows more than the time end point of transmission time threshold value sensing.By the invention it is possible to solve the problems, such as because receiving station cannot retransmit the segmentation of the channel feedback information of bust this caused by transmission time threshold restriction, it is to avoid the waste of bandwidth resources.
Description
Technical field
The present invention relates to the communications field, the transmission method and system of a kind of channel feedback information are particularly related to.
Background technology
At present, fast-developing in field of wireless WLAN (WLAN), the demand to WLAN coverings is required increasingly
Increase, the also more and more higher of the requirement to the handling capacity of WLAN.Institute of Electrical and Electric Engineers industrial specification IEEE802.11 groups
In, a series of most common WLAN technical standards such as 802.11a, 802.11b, 802.11g are successively defined, then go out successively again
Other task groups are showed, have been devoted to developing the specification for being related to existing 802.11 technological improvement, for example, 802.11n task groups are proposed
The requirement of high-throughput (HT, High Throughput), supports to be up to the data rate of 600Mbps；802.11ac task groups are entered
One step proposes the concept of ultra-high throughput (VHT, Very High Throughput), by introducing bigger channel width by number
According to speed lifting to 1Gbps.
In 802.11, an access point (AP, Access Point) and be associated with the AP multiple websites (STA,
Station a Basic Service Set (BSS, Basic Service Set)) is constituted.802.11 define two kinds of operator schemes：
Distributed coordination function (DCF, Distributed Coordination Function) and point coordination function (PCF, Point
Coordination Function), and for the improvement of both operations pattern：Enhanced distributed coordination access function
(EDCA, Enhanced Distributed Channel Access) and Hybrid Coordination Function control channel access function
(HCCA, Hybrid Coordination function Controlled channel Access).Wherein, DCF is most base
This operator scheme, using Carrier Sense Multiple Access mechanism (CSMA/CA, the CSMA with conflict avoidance
Collision Avoidance) make multiple website sharing wireless channels.EDCA is enhanced kind of operation pattern, using CSMA/CA machines
System, makes multiple different priorities queue sharing wireless channels, and preengage transmission opportunity (TXOP, a Transmission
Opportunity), that is, it is subscribed to one section of transmission duration (TXOP Duration).Each has the priority query of qos requirement
There is a transmission time threshold value respectively：TXOP limit parameters, represent that the TXOP that the priority query is obtained is corresponding most
Big transmission duration.
In the prior art, new Frame switch sequence is defined in order to carry out channel information collection, specially：Transmitting station is sent out
Notification frame (NDPA, Null Data Packet Announcement) frame of row channel measurement is sent into, and knot is sent in NDPA frames
The short interFrameGap (SIFS, Short Interframe Space) of beam sends empty data frame (NDP, Null Data afterwards
Packet) frame；First receiving station that acquiescence NDPA frames are indicated replys channel after the SIFS for having received NDPA frames and NDP frames
Feedback information (Sounding Feedback).If multiple receiving stations, in addition to first receiving station acquiescence feedback, its
His receiving station waits the poll (Sounding Poll) of transmitting station to send channel feedback information, as shown in Figure 1.
According to different channel conditions, the data volume of the channel feedback information that receiving station is fed back is different, maximum
27K bytes can be reached.In order to improve the efficiency of transmission of channel feedback information, by whole channel feedback information using segmentation
(segment) mode is transmitted, if channel feedback information bust this or wherein having the partial segments of bust this, is sent
Website will notify that receiving station retransmits the partial segments of bust this one time.
Defined new Frame switch sequence is collected for the above-mentioned channel information that carries out, when there is transmission in channel feedback information
During the partial segments of failure, transmitting station will send poll to receiving station, receiving station is retransmitted the part point of bust this
Section, but because the transmission of data frame in correlation technique has transmission time threshold value (TXOP Limit), receiving station is retransmitted and passed
The partial segments of defeated failure can be limited by the time threshold, and receiving station may be caused to retransmit the part point of bust this
Section, other channel feedback informations segmentation that transmitting station has successfully received before cannot also be used, and cause bandwidth resources to waste.
The content of the invention
In view of this, it is a primary object of the present invention to provide the transmission method and system of a kind of channel feedback information, with
When having the partial segments of bust this in solution channel feedback information, because transmission time threshold value (TXOP Limit) limitation causes
Receiving station cannot retransmit bust this local channel feedback information problem.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The invention provides a kind of transmission method of channel feedback information, the method also includes：
After transmitting station confirms to need receiving station to resend part or all of channel feedback information, in current point in time
Not less than transmission time threshold value point to time end point when, the transmitting station to the receiving station send radio frames, please
Ask the receiving station that the part or all of channel feedback information is resend in subscription time；
The time end point that the subscription time carried in the radio frames is pointed to allows more than the transmission time threshold
It is worth the time end point pointed to.
Wherein, the transmitting station confirms to need receiving station to resend part or all of channel feedback information, including：
When the transmitting station is not properly received whole segmentations of the channel feedback information that the receiving station sends, institute
State the partial segments of the channel feedback information that transmitting station confirmation needs receiving station to resend reception failure；Or,
When the transmitting station is not received by the channel feedback information that the receiving station sends, the transmitting station is true
Recognize the whole segmentations for needing receiving station to resend channel feedback information；Or,
Whole segment faults of the channel feedback information that the receiving station that the transmitting station is received sends are mistaken, described
Transmitting station confirms the whole segmentations for needing receiving station to resend channel feedback information.
The transmitting station sends radio frames to the receiving station, including：
When current point in time is not less than the time end point that transmission time threshold value is pointed to, the transmitting station is to the reception
Website sends poll.
When the current point in time is not less than the time end point that transmission time threshold value is pointed to, the method also includes：Confirm
Remaining transmission opportunity duration not less than poll transmission duration when, the transmitting station sends to the receiving station and takes turns
Ask.
When carrying resends the configured information of part or all of channel feedback information and the reservation in the poll
Between.
Present invention also offers a kind of Transmission system of channel feedback information, the system includes：Transmitting station and receiving station
Point；Wherein：
The transmitting station, for confirming to need the receiving station to resend part or all of channel feedback information
Afterwards, when current point in time is not less than the time end point that transmission time threshold value is pointed to, radio frames are sent to the receiving station,
Ask the receiving station that the part or all of channel feedback information is resend in subscription time；
The receiving station, for resending part or all of channel feedback information to the transmitting station.
Wherein, the transmitting station, is additionally operable to be not properly received the channel feedback information that the receiving station sends
Whole segmentation when, the partial segments of the channel feedback information for confirming to need the receiving station to resend reception failure；
Or, it is additionally operable to, when the channel feedback information of the receiving station transmission is not received by, confirm that needs are described
Receiving station resends whole segmentations of channel feedback information；
Or, it is additionally operable to be mistaken in whole segment faults of the channel feedback information of the receiving station transmission for receiving, really
Recognize the whole segmentations for needing the receiving station to resend channel feedback information.
The transmitting station, is additionally operable to when current point in time is not less than the time end point that transmission time threshold value is pointed to,
Poll is sent to the receiving station.
When current point in time is not less than the time end point that transmission time threshold value is pointed to, the transmitting station is additionally operable to
Confirm remaining transmission opportunity duration not less than poll transmission duration when, send poll to the receiving station.
When carrying resends the configured information of part or all of channel feedback information and the reservation in the poll
Between.
The transmission method and system of channel feedback information of the present invention, transmitting station confirm to need receiving station to resend portion
Point or whole channel feedback information after, when it is determined that current point in time is not less than the time end point that TXOP limit are pointed to, ask
Ask receiving station that part or all of channel feedback information is resend in subscription time；Wherein, the time that subscription time is pointed to
End point allows more than the time end point of TXOP limit sensings, and subscription time is unrelated with TXOP Limit, do not limited by it
System, in this way, avoiding that due to the receiving station that TXOP Limit limitations are caused the partial segments of bust this cannot be retransmitted
Problem, and the problem that the segmentation of other channel feedback informations that thus caused transmitting station is received cannot be used, it is to avoid band
The waste of resource wide.
Brief description of the drawings
Fig. 1 is the process of feedback schematic diagram of existing channel feedback information；
Fig. 2 is the transmission method schematic flow sheet of channel feedback information of the present invention；
Fig. 3 is the Transmission system structural representation of channel feedback information of the present invention.
Specific embodiment
The basic thought of the transmission method of channel feedback information of the present invention is：Transmitting station confirms to need receiving station again
After transmitting portion or whole channel feedback informations, it is determined that current point in time is not less than the time end point that TXOP limit are pointed to
When, request receiving station resends part or all of channel feedback information in subscription time；Wherein, subscription time is pointed to
Time end point allows more than the time end point of TXOP limit sensings, so, it is possible to solve due to TXOP Limit limits
Receiving station cannot retransmit the problem of the partial segments of bust this caused by system.
As shown in Fig. 2 the transmission method of channel feedback information of the present invention includes：
Step 201, after transmitting station confirms to need receiving station to resend part or all of channel feedback information, and really
Current point in time is recognized not less than the time end point that TXOP limit are pointed to.
Transmitting station sends radio frames request receiving station and carries out channel information measurement, and radio frames (NDPA and NDP) are specified
First receiving station give tacit consent to after radio frames are received reply channel feedback information (Sounding Feedback)；Except first
Other receiving stations of individual receiving station wait the radio frames (Sounding Poll) of transmitting station to carry out feedback channel feedback letter
Breath.In order to improve the efficiency of transmission of channel feedback information, by whole channel feedback information using be segmented (segment) by the way of come
Transmission, the first segmentation to N segmentations is divided into by channel feedback information.
Wherein, TXOP durations timing since transmitting station sends NDPA, TXOP limit illustrate a length of during the TXOP
How much, if reach the time end point that TXOP limit are pointed to, channel information measurement terminates.
When transmitting station is not properly received whole segmentations of the channel feedback information of receiving station transmission, transmitting station
Confirmation needs receiving station to resend the partial segments of the channel feedback information of reception failure；
When transmitting station is not received by the channel feedback information of receiving station transmission, transmitting station confirms to need to receive
Website resends whole segmentations of channel feedback information；
When whole segment faults of the channel feedback information of the receiving station transmission of transmitting station reception are mistaken, transmitting station is true
Recognize the whole segmentations for needing receiving station to resend channel feedback information.
Step 202, transmitting station sends radio frames to receiving station, and request receiving station resends in subscription time
Part or all of channel feedback information；The time end point that the subscription time carried in radio frames is pointed to allows more than TXOP
The time end point that limit is pointed to.
When transmitting station confirms to need receiving station to resend part or all of channel feedback information, transmitting station is needed
Judge whether current point in time has exceeded the time end point of TXOP limit sensings, if not, transmitting station is to receiving station
Point sends radio frames (being Sounding Poll)；
In addition, when transmitting station confirms current point in time not less than the time end point that TXOP limit are pointed to, can be with
Whether remaining TXOP durations are further confirmed that not less than a transmission duration of Sounding Poll, if it is not, then sending out
See off and a little send Sounding Poll to receiving station.
When receiving station receives the Sounding Poll of transmitting station transmission, start to resend partly or entirely letter
Road feedback information.
According to actual conditions, carried in the Sounding Poll resend for request and resend part or complete
Portion's channel feedback information and subscription time.Wherein, the time end point that subscription time is pointed to allows more than TXOP limit and refers to
To time end point, i.e. subscription time do not limited by TXOP limit.
The solution of the present invention is illustrated below by specific embodiment.
Embodiment one
Website A (transmitting station) and one or more websites (receiving station) are communicated.Website A sends NDPA frames, and
NDP frames are sent after NDPA frames send the SIFS for terminating；NDPA frames indicate first receiving station has received NDPA frames with
Give tacit consent to after the SIFS of NDP frames to website A feedback channel feedback informations.
(i.e. should when having partial segments mistake in the channel feedback information of first receiving station feedback that website A is received
Partial segments bust this), confirmation needs receiving station to resend the local channel feedback information.
If time point now is also not above the time end point that TXOPlimit is pointed to, then website A is being waited
After one SIFS, Sounding Poll are sent to first receiving station, request resends the letter of fractional transmission failure
Road feedback information segmentation；
Or, if time point now is also not above the time end point of TXOPlimit sensings, website A is being waited
After one SIFS, when confirming the transmission duration of remaining TXOP durations not less than Sounding Poll, website A to this
One receiving station sends Sounding Poll, and request resends the channel feedback information segmentation of fractional transmission failure.
Subscription time is carried in the Sounding Poll and (above-mentioned bust this is resend according to first receiving station
The segmentation of local channel feedback information needed for time set) and resend the local channel feedback information of bust this
The configured information of segmentation, makes first receiving station that the local channel feedback information of bust this is resend in subscription time
Segmentation.
Because the subscription time is time needed for being resend according to first receiving station setting and allow pre-
Make an appointment sensing time end point more than the time end point that TXOP limit are pointed to, therefore, the secondary channel feedback information
Re-transmission is not limited by TXOP limit.
After first receiving station resends to be finished, the time end point also pointed to not less than TXOP limit, that
Website A continues to send Sounding Poll to second receiving station, it is desirable to its feedback channel feedback information；Otherwise,
After one receiving station resends and finishes, website A does not send Sounding Poll.
Embodiment two
Website A (transmitting station) and one or more websites (receiving station) are communicated.Website A sends NDPA frames, and
NDP frames are sent after NDPA frames send the SIFS for terminating；NDPA frames indicate first receiving station has received NDPA frames with
Give tacit consent to after the SIFS of NDP frames and reply channel feedback information.
Whole segment faults are mistaken in the channel feedback information of first receiving station feedback that website A is received, and website A is being waited
After after a SIFS, Sounding Poll are sent to second receiving station, the Sounding Poll are used to ask second
Receiving station station feedback channel feedback information；Second receiving station is anti-to website A feedback channels after a SIFS has been waited
Feedforward information.
When website A confirms to have partial segments mistake in the channel feedback information of second receiving station for receiving feedback,
Confirmation needs receiving station to resend the local channel feedback information.
If time point now is also not above the time end point that TXOP limit are pointed to, then website A is being waited
After one SIFS, Sounding Poll are sent to second receiving station, request resends the letter of fractional transmission failure
Road feedback information segmentation；
Or, if time point now is also not above the time end point of TXOP limit sensings, website A is being waited
After one SIFS, when confirming the transmission duration of remaining TXOP durations not less than Sounding Poll, website A to this
Two receiving stations send Sounding Poll, and request resends the channel feedback information segmentation of fractional transmission failure.
Subscription time is carried in the Sounding Poll and (above-mentioned bust this is resend according to second receiving station
The segmentation of local channel feedback information needed for time set) and resend the local channel feedback information of bust this
The configured information of segmentation, makes second receiving station that the local channel feedback information of bust this is resend in subscription time
Segmentation.
Because the subscription time is time needed for being resend according to second receiving station setting and allow pre-
Make an appointment sensing time end point more than the time end point that TXOP limit are pointed to, therefore, the secondary channel feedback information
Re-transmission is not limited by TXOP limit.
After second receiving station resends to be finished, the time end point also pointed to not less than TXOP limit, that
Website A continues to send Sounding Poll to the 3rd receiving station, it is desirable to its feedback channel feedback information；Otherwise,
After two receiving stations resend and finish, website A does not send Sounding Poll.
Can be seen that transmitting station by above-mentioned two embodiment can confirm to need retransfer channel anti-according to the actual requirements
The receiving station of feedforward information, if not needing current receiving station to retransmit, transmitting station asks next receiving station feedback
After channel feedback information, receiving station above would not be again asked to retransmit.
It is pointed out that if whole segment faults of channel feedback information that transmitting station is received were mistaken, could
Ask the receiving station to retransmit, but ask next receiving station feedback channel feedback information.
Embodiment three
Website A (transmitting station) and one or more websites (receiving station) are communicated.Website A sends NDPA frames, and
NDP frames are sent after NDPA frames send the SIFS for terminating；NDPA frames indicate first receiving station has received NDPA frames with
Give tacit consent to after the SIFS of NDP frames and reply channel feedback information.
When website A is after NDP has been sent, if be not received by first in a PCF interframe space (PIFS) connect
The channel feedback information of website acquiescence feedback is received, confirmation needs first receiving station to resend whole channel feedback informations
Segmentation.
If time point now is not above the time end point of TXOPlimit sensings, then website A will connect to first
Receive website and send Sounding Poll, ask it to resend whole channel feedback informations and be segmented；
Or, if time point now be not above the time end point of TXOPlimit sensings, then website A confirms surplus
During transmission duration of the remaining TXOP durations not less than Sounding Poll, website A sends to first receiving station
Sounding Poll, ask it to resend whole channel feedback informations and are segmented.
Subscription time is carried in the Sounding Poll and (whole channel feedbacks is resend according to first receiving station
Time needed for information segmenting is set) and the configured information of whole channel feedback informations segmentations is resend, make first to connect
Receive website and whole channel feedback information segmentations are resend in subscription time.
Because the subscription time is time needed for being resend according to first receiving station setting and allow pre-
Make an appointment sensing time end point more than the time end point that TXOP limit are pointed to, therefore, the secondary channel feedback information
Re-transmission is not limited by TXOPlimit.
After first receiving station resends and finishes, the time end point also pointed to not less than TXOPlimit, then stand
Point A continues to send Sounding Poll to second receiving station, it is desirable to its feedback channel feedback information；Otherwise, at first
Receiving station is resend after finishing, and website A does not send Sounding Poll.
Example IV
Website A (transmitting station) and one or more websites (receiving station) are communicated.Website A sends NDPA frames, and
NDP frames are sent after NDPA frames send the SIFS for terminating；NDPA frames indicate first receiving station has received NDPA frames with
Give tacit consent to after the SIFS of NDP frames and reply channel feedback information.
After website A receives first channel feedback information of receiving station acquiescence feedback, a SIFS is waited, to second
Individual receiving station sends Sounding Poll, and second receiving station needs the feedback channel feedback information after a SIFS.
If after website A sends Sounding Poll, second receiving station being not received by a PIFS and being sent
Channel feedback information, confirmation needs second receiving station to resend whole channel feedback informations to be segmented.
If time point now is not above the time end point of TXOPlimit sensings, then website A will again to second
Individual receiving station sends Sounding Poll, asks it to resend whole channel feedback informations and is segmented；
Or, if time point now be not above the time end point of TXOPlimit sensings, then website A confirms surplus
During transmission duration of the remaining TXOP durations not less than Sounding Poll, website A sends out to second receiving station again
Sounding Poll are sent, is asked it to resend whole channel feedback informations and is segmented.
Subscription time is carried in the Sounding Poll and (whole channel feedbacks is resend according to second receiving station
Time needed for information segmenting is set) and the configured information of whole channel feedback informations segmentations is resend, make second to connect
Receive website and whole channel feedback information segmentations are resend in subscription time.
Because the subscription time is time needed for being resend according to second receiving station setting and allow pre-
Make an appointment sensing time end point more than the time end point that TXOP limit are pointed to, therefore, the secondary channel feedback information
Re-transmission is not limited by TXOP limit.
After second receiving station resends to be finished, the time end point also pointed to not less than TXOP limit, that
Website A continues to send Sounding Poll to the 3rd receiving station, it is desirable to its feedback channel feedback information；Otherwise,
After two receiving stations resend and finish, website A does not retransmit SoundingPoll.
Embodiment five
Website A (transmitting station) and one or more websites (receiving station) are communicated.Website A sends NDPA frames, and
NDP frames are sent after NDPA frames send the SIFS for terminating；NDPA frames indicate first receiving station has received NDPA frames with
Give tacit consent to after the SIFS of NDP frames and reply channel feedback information.
When website A is after NDP has been sent, first whole channel feedback information point of receiving station acquiescence feedback is received
During core dumped, confirmation needs first receiving station to resend whole channel feedback informations segmentations.
If time point now is not above the time end point of TXOPlimit sensings, then website A will connect to first
Receive website and send Sounding Poll, ask it to resend whole channel feedback informations and be segmented；
Or, if time point now be not above TXOPlimit sensing time end point, then website A wait
After one PIFS, when confirming the transmission duration of remaining TXOP durations not less than Sounding Poll, website A to this
One receiving station sends Sounding Poll, asks it to resend whole channel feedback informations and is segmented.
Subscription time is carried in the Sounding Poll and (whole channel feedbacks is resend according to first receiving station
Time needed for information segmenting is set) and the configured information of whole channel feedback informations segmentations is resend, make first to connect
Receive website and whole channel feedback information segmentations are resend in subscription time.
Because the subscription time is time needed for being resend according to first receiving station setting and allow pre-
Make an appointment sensing time end point more than the time end point that TXOPlimit is pointed to, therefore, the weight of the secondary channel feedback information
Biography is not limited by TXOPlimit.
After first receiving station resends and finishes, the time end point also pointed to not less than TXOPlimit, then stand
Point A continues to send Sounding Poll to second receiving station, it is desirable to its feedback channel feedback information；Otherwise, at first
Receiving station is resend after finishing, and website A does not send Sounding Poll.
In order to realize above-mentioned transmission method, the embodiment of the present invention additionally provides a kind of Transmission system of channel feedback information,
As shown in figure 3, including：Collector unit 10 and feedback unit 20；Wherein：
A kind of Transmission system of channel feedback information, it is characterised in that the system includes：Transmitting station and receiving station；
Wherein：
Transmitting station, after confirming to need receiving station to resend part or all of channel feedback information, current
When time point is not less than the time end point that transmission time threshold value (TXOPlimit) is pointed to, radio frames are sent to receiving station, please
Ask receiving station that part or all of channel feedback information is resend in subscription time；
Receiving station, for resending part or all of channel feedback information to transmitting station.
Wherein, transmitting station, is additionally operable to the whole point in the channel feedback information for not being properly received receiving station transmission
Duan Shi, confirmation needs receiving station to resend the partial segments of the channel feedback information of reception failure；
Or, it is additionally operable to when the channel feedback information of receiving station transmission is not received by, confirmation needs receiving station
Resend whole segmentations of channel feedback information；
Or, it is additionally operable to be mistaken in whole segment faults of the channel feedback information of the receiving station transmission for receiving, confirm to need
Receiving station is wanted to resend whole segmentations of channel feedback information.
Transmitting station, is additionally operable to when current point in time is not less than the time end point that TXOPlimit is pointed to, to receiving station
Point sends poll (Sounding Poll).
When current point in time is not less than the time end point that TXOPlimit is pointed to, transmitting station is additionally operable to confirming residue
Transmission duration of the TXOP durations not less than Sounding Poll when, send Sounding Poll to receiving station.
The configured information and reservation for resending part or all of channel feedback information are carried in Sounding Poll
Time.
The above, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention.
Claims (10)
1. a kind of transmission method of channel feedback information, it is characterised in that the method also includes：
After transmitting station confirms to need receiving station to resend part or all of channel feedback information, do not surpass in current point in time
When crossing the time end point of transmission time threshold value sensing, the transmitting station sends radio frames to the receiving station, asks institute
State receiving station and the part or all of channel feedback information is resend in subscription time；
The time end point that the subscription time carried in the radio frames is pointed to allows more than the transmission time threshold value and refers to
To time end point.
2. the transmission method of channel feedback information according to claim 1, it is characterised in that the transmitting station confirms to need
Receiving station resends part or all of channel feedback information, including：
When the transmitting station is not properly received whole segmentations of the channel feedback information that the receiving station sends, the hair
The partial segments of the channel feedback information that a confirmation that sees off needs receiving station to resend reception failure；Or,
When the transmitting station is not received by the channel feedback information that the receiving station sends, the transmitting station confirms to need
Receiving station is wanted to resend whole segmentations of channel feedback information；Or,
Whole segment faults of the channel feedback information that the receiving station that the transmitting station is received sends are mistaken, the transmission
Website confirms the whole segmentations for needing receiving station to resend channel feedback information.
3. the transmission method of channel feedback information according to claim 2, it is characterised in that the transmitting station connects to described
Receive website and send radio frames, including：
When current point in time is not less than the time end point that transmission time threshold value is pointed to, the transmitting station is to the receiving station
Poll is initiated, wherein, it is described to be polled as the transmitting station to receiving station transmission radio frames.
4. the transmission method of channel feedback information according to claim 3, it is characterised in that the current point in time not less than
During the time end point that transmission time threshold value is pointed to, the method also includes：Confirm that remaining transmission opportunity duration is not less than one
During the transmission duration of poll, the transmitting station initiates poll to the receiving station.
5. according to claim 3 or 4 channel feedback information transmission method, it is characterised in that the nothing for poll
The configured information and the subscription time for resending part or all of channel feedback information are carried in line frame.
6. a kind of Transmission system of channel feedback information, it is characterised in that the system includes：Transmitting station and receiving station；Its
In：
The transmitting station, after confirming to need the receiving station to resend part or all of channel feedback information,
When current point in time is not less than the time end point that transmission time threshold value is pointed to, radio frames, request are sent to the receiving station
The receiving station resends the part or all of channel feedback information in subscription time, wherein, in the radio frames
The time end point that the subscription time for carrying is pointed to allows more than the time end point that the transmission time threshold value is pointed to；
The receiving station, for resending part or all of channel feedback information to the transmitting station.
7. the Transmission system of channel feedback information according to claim 6, it is characterised in that
The transmitting station, is additionally operable to be not properly received whole segmentations of the channel feedback information that the receiving station sends
When, confirm that the needs receiving station resends the partial segments of the channel feedback information of reception failure；
Or, it is additionally operable to, when the channel feedback information of the receiving station transmission is not received by, confirm to need the reception
Website resends whole segmentations of channel feedback information；
Or, it is additionally operable to be mistaken in whole segment faults of the channel feedback information of the receiving station transmission for receiving, confirm to need
The receiving station is wanted to resend whole segmentations of channel feedback information.
8. the Transmission system of channel feedback information according to claim 7, it is characterised in that
The transmitting station, is additionally operable to when current point in time is not less than the time end point that transmission time threshold value is pointed to, to institute
State receiving station and initiate poll, wherein, it is described to be polled as the transmitting station to receiving station transmission radio frames.
9. the Transmission system of channel feedback information according to claim 8, it is characterised in that
When current point in time is not less than the time end point that transmission time threshold value is pointed to, the transmitting station is additionally operable to confirming
Remaining transmission opportunity duration not less than poll transmission duration when, initiate poll to the receiving station.
10. the Transmission system of channel feedback information according to claim 8 or claim 9, it is characterised in that the nothing for poll
The configured information and the subscription time for resending part or all of channel feedback information are carried in line frame.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110107549.7A CN102761399B (en) | 2011-04-27 | 2011-04-27 | The transmission method and system of a kind of channel feedback information |
| PCT/CN2012/074147 WO2012146138A1 (en) | 2011-04-27 | 2012-04-16 | Method and system for transmitting channel feedback information |
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| CN201110107549.7A CN102761399B (en) | 2011-04-27 | 2011-04-27 | The transmission method and system of a kind of channel feedback information |
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| WO (1) | WO2012146138A1 (en) |
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| CN105337705B (en) | 2014-08-06 | 2020-06-23 | 中兴通讯股份有限公司 | Data transmission feedback, data transmission method and device |
| US10383091B2 (en) * | 2015-05-01 | 2019-08-13 | Marvell World Trade Ltd. | Transmission opportunity ownership transfer and extension in a wireless local area network (WLAN) |
| CN106302271A (en) * | 2015-06-05 | 2017-01-04 | 中兴通讯股份有限公司 | Channel information acquisition method, sending method, acquisition device and dispensing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101796761A (en) * | 2007-08-14 | 2010-08-04 | 诺基亚公司 | Resource scheduling enabling partially-constrained retransmission |
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| JP4322836B2 (en) * | 2005-03-31 | 2009-09-02 | 株式会社東芝 | Wireless communication system |
| KR101389680B1 (en) * | 2007-02-06 | 2014-05-27 | 엘지전자 주식회사 | Wireless Communication system, Station and Access point for Wireless LAN system and Scheduling method thereof |
| KR101729134B1 (en) * | 2009-03-27 | 2017-04-25 | 삼성전자주식회사 | Apparatus and method for arq feedback polling in wireless communication system |
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| CN102761399A (en) | 2012-10-31 |
| WO2012146138A1 (en) | 2012-11-01 |
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