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WO2016192520A1 - 信道信息获取方法、发送方法、获取装置及发送装置 - Google Patents

信道信息获取方法、发送方法、获取装置及发送装置 Download PDF

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Publication number
WO2016192520A1
WO2016192520A1 PCT/CN2016/081904 CN2016081904W WO2016192520A1 WO 2016192520 A1 WO2016192520 A1 WO 2016192520A1 CN 2016081904 W CN2016081904 W CN 2016081904W WO 2016192520 A1 WO2016192520 A1 WO 2016192520A1
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WIPO (PCT)
Prior art keywords
channel information
channel
information
segment
subcarrier group
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Application number
PCT/CN2016/081904
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English (en)
French (fr)
Inventor
邢卫民
田开波
孙波
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016192520A1 publication Critical patent/WO2016192520A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines

Definitions

  • This document relates to, but is not limited to, the field of communications, and in particular, to a channel information acquisition method, a transmission method, an acquisition device, and a transmission device.
  • Wireless Local Area Network uses Orthogonal Frequency Division Multiplexing (OFDM) transmission technology, while 802.11n Introducing Multiple Input Multiple Output (MIMO) and beamforming technologies, the 802.11 standard inherits OFDM and MIMO as a basic technology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • MIMO Multiple Input Multiple Output
  • FIG. 1 is a schematic diagram of a WLAN basic service set in the related art.
  • the sender needs to know the current wireless channel status, and the process of the transmitter acquiring the channel state is called a sounding process, and specifically includes a beamformer to transmit a measurement signal, and a channel feedback party (beamformee).
  • Beamformee channel feedback party
  • FIG. 2 is a schematic diagram of the probe report transmission in the related art.
  • the probe sends a notification.
  • the frame informs the feedback party to perform channel measurement, and sends a sounding signal after the notification frame, the feedback party detects the sounding signal, measures the estimated channel state, and generates a measurement report, because the measurement report greatly exceeds the supported single data unit block.
  • the large length, the feedback party segments the feedback report according to the rules defined in the related art, wherein all segments except the last segment are of a fixed size and equal to the maximum length of the supported data block.
  • the feedback party aggregates the above segments and sends them to the probe side together. If the segment 2 is subjected to the interference reception error during the first transmission, the probe sends a feedback report poll frame to the feedback party, requesting the retransmission segment 2 And indicates that other segments do not need to be retransmitted. This avoids retransmission of the entire measurement report every time an error occurs. However, the probe party needs to obtain segment 2 to obtain complete channel information, so if any segment fails, the above retransmission process is necessary.
  • the embodiment of the invention provides a channel information acquisition method, a sending method, an obtaining device and a sending device, which can reduce the overhead of network retransmission segmentation.
  • a channel information acquisition method including: receiving N segment frames sent by a channel feedback station, where the N segment frames are filled with M to be fed back Channel information of the carrier group, the channel information of the M subcarrier groups to be fed back is cross-filled into the N segment frames, the M is an integer greater than 1, and the N is greater than or equal to An integer of 1 , the subcarrier group includes one or more subcarriers; and acquiring channel information of the M subcarrier groups to be fed back filled in the N segment frames.
  • acquiring the channel information of the M sub-carrier groups to be fed back filled in the N segment frames includes: determining a segment frame that is correctly received; and filling the segment frame with the correctly received segment
  • the channel information of the subcarrier group determines channel information of the M subcarrier groups to be fed back.
  • the channel information of the M subcarrier groups to be fed back includes: estimating, by using a subcarrier group adjacent to the subcarrier group corresponding to the segment frame that is not correctly received, the subcarrier group corresponding to the segment frame that is not correctly received.
  • the subcarrier group corresponding to the segment frame that is not correctly received is a subcarrier group corresponding to channel information of the subcarrier group filled in the segment frame that is not correctly received, the adjacent The subcarrier group is a subcarrier group corresponding to channel information of the subcarrier group filled in the segment frame that is correctly received; according to the estimated channel information of the subcarrier group filled in the incorrectly received segment frame and the The channel information of the subcarrier groups filled in the correctly received segmented frame determines the channel information of the M subcarrier groups to be fed back.
  • the weight and correct reception of channel information of the subcarrier group filled in the correctly received segment frame used
  • the subcarrier group number is inversely proportional to the distance of the subcarrier group number that is not correctly received, wherein the correctly received subcarrier group number is the subcarrier group filled in the used segment frame that is correctly received.
  • the number of the subcarrier group corresponding to the channel information, the subcarrier group number that is not correctly received is the number of the subcarrier group corresponding to the channel information of the subcarrier group filled in the segment frame that is not correctly received.
  • the method further includes: when the number of correctly received segmented frames is less than or equal to a threshold, sending, to the channel feedback site, the channel for requesting The feedback site retransmits the channel report polling frame of the segmented frame that was not correctly received.
  • the method before receiving the N segment frames sent by the channel feedback site, the method further includes: sending, to the channel feedback site, a sounding signal for detecting channel information of the subcarrier group to be fed back, where The sounding signal is used by the channel feedback station to acquire channel information of L subcarrier groups, the L being an integer greater than 1, and the L is greater than or equal to the M.
  • the method before receiving the N segment frames sent by the channel feedback site, the method further includes: sending an indication message indicating the value of the N and/or the M to the channel feedback site.
  • the indication message used to indicate the value of the M includes the bandwidth of the required channel information and indication information of the frequency band.
  • the channel information of the subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; in the subcarrier group Channel information synthesized by channel information of a plurality of subcarriers.
  • each of the N segment frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, and channel data dimension indication information. Segment number information, measured bandwidth information, channel signal to noise ratio information, and packet information.
  • a channel information sending method including: cross-filling channel information of M subcarrier groups to be fed back into N segment frames, where M is greater than An integer of 1, the N is an integer greater than or equal to 1, the subcarrier group includes one or more subcarriers; and the N segmented frames are transmitted to a channel sounding station.
  • the method further includes: receiving, by the channel sounding station, the subcarrier group for detecting the to be fed back a sounding signal of the channel information; acquiring channel information of the L subcarrier groups according to the sounding signal, wherein the L is an integer greater than 1, and the L is greater than or equal to the M.
  • the method further includes: receiving, by the channel sounding station, the M and/or the An indication message of the value of N.
  • the indication message used to indicate the value of the M includes the bandwidth of the required channel information and indication information of the frequency band.
  • the channel information of the subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; in the subcarrier group Channel information synthesized by channel information of a plurality of subcarriers.
  • the length of the channel information of the subcarrier group filled in each of the N segment frames is less than or equal to the maximum data unit block length supported by the channel sounding station.
  • sending the N segment frames to the channel sounding station comprises: encapsulating the N segment frames into N media access control layer protocol data units MPDU; and synthesizing the N MPDUs into one Aggregating medium access control protocol data unit A-MPDU; transmitting the A-MPDU The station is probed to the channel.
  • each of the N segment frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, and channel data dimension indication information. Segment number information, measured bandwidth information, channel signal to noise ratio information, and packet information.
  • a channel information acquiring apparatus including: a first receiving module, configured to receive N segment frames sent by a channel feedback station, where the N segment frames are common The channel information of the M subcarrier groups to be fed back is filled, and the channel information of the M subcarrier groups to be fed back is cross-filled into the N segment frames, where M is an integer greater than 1.
  • the N is an integer greater than or equal to 1, and the subcarrier group includes one or more subcarriers.
  • the first acquiring module is configured to acquire the M to be fed back filled in the N segment frames. Channel information of the subcarrier group.
  • the first obtaining module includes: a first determining unit, configured to determine a segment frame that is correctly received; and a second determining unit configured to use the subcarrier group that is filled in the correctly received segmented frame
  • the channel information determines channel information of the M subcarrier groups to be fed back.
  • the second determining unit is configured to: estimate a subcarrier group corresponding to the incorrectly received segment frame by using a subcarrier group adjacent to the subcarrier group corresponding to the segment frame that is not correctly received.
  • Channel information where the subcarrier group corresponding to the segment frame that is not correctly received is a subcarrier group corresponding to channel information of the subcarrier group filled in the segment frame that is not correctly received, the adjacent subcarrier
  • the carrier group is a subcarrier group corresponding to channel information of the subcarrier group filled in the segment frame that is correctly received; according to the estimated channel information of the subcarrier group filled in the incorrectly received segment frame and the correct Channel information of the subcarrier groups filled in the received segmented frame determines channel information of the M subcarrier groups to be fed back.
  • the weight and correct reception of channel information of the subcarrier group filled in the correctly received segment frame used
  • the subcarrier group number is inversely proportional to the distance of the subcarrier group number that is not correctly received, wherein the correctly received subcarrier group number is the subcarrier group filled in the used segment frame that is correctly received.
  • the number of the subcarrier group corresponding to the channel information, the subcarrier group number that is not correctly received is the number of the subcarrier group corresponding to the channel information of the subcarrier group filled in the segment frame that is not correctly received.
  • the apparatus further includes: a first sending unit, configured to send, when the number of the correctly received segmented frames is less than or equal to a threshold, to send the channel to request the channel
  • the feedback site retransmits the channel report polling frame of the segmented frame that was not correctly received.
  • the device further includes: a first sending module, configured to send, to the channel feedback station, a sounding signal for detecting channel information of the subcarrier group to be fed back, wherein the sounding signal is used for
  • the channel feedback station acquires channel information of L subcarrier groups, the L is an integer greater than 1, and the L is greater than or equal to the M.
  • the apparatus further includes: a second sending module, configured to send an indication message for indicating the value of the N and/or the M to the channel feedback site.
  • a second sending module configured to send an indication message for indicating the value of the N and/or the M to the channel feedback site.
  • the indication message used to indicate the value of the M includes the bandwidth of the required channel information and indication information of the frequency band.
  • the channel information of the subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; in the subcarrier group Channel information synthesized by channel information of a plurality of subcarriers.
  • each of the N segment frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, and channel data dimension indication information. Segment number information, measured bandwidth information, channel signal to noise ratio information, and packet information.
  • a channel information transmitting apparatus including: a filling module, configured to cross-fill channel information of M subcarrier groups to be fed back into N segment frames, where The M is an integer greater than 1, the N is an integer greater than or equal to 1, the subcarrier group includes one or more subcarriers, and the third sending module is configured to send the N segment frames to Channel detection site.
  • the device further includes: a second receiving module, configured to receive a sounding signal sent by the channel detecting station for detecting channel information of the subcarrier group to be fed back; and a second acquiring module, configured to Acquiring channel information of L subcarrier groups according to the sounding signal, wherein the L is an integer greater than 1, and the L is greater than or equal to the M.
  • a second receiving module configured to receive a sounding signal sent by the channel detecting station for detecting channel information of the subcarrier group to be fed back
  • a second acquiring module configured to Acquiring channel information of L subcarrier groups according to the sounding signal, wherein the L is an integer greater than 1, and the L is greater than or equal to the M.
  • the device further includes: a third receiving module, configured to receive an indication message sent by the channel sounding station to indicate the value of the M and/or the N.
  • a third receiving module configured to receive an indication message sent by the channel sounding station to indicate the value of the M and/or the N.
  • the indication message used to indicate the value of the M includes the bandwidth of the required channel information and indication information of the frequency band.
  • the channel information of the subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; in the subcarrier group Channel information synthesized by channel information of a plurality of subcarriers.
  • the length of the channel information of the subcarrier group filled in each of the N segment frames is less than or equal to the maximum data unit block length supported by the channel sounding station.
  • the third sending module includes: an encapsulating unit, configured to encapsulate the N segment frames into N media access control layer protocol data units MPDU; and an aggregation unit, configured to set the N MPDUs
  • the aggregation is an aggregation medium access control protocol data unit A-MPDU; and the second sending unit is configured to send the A-MPDU to the channel detection station.
  • each of the N segment frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, and channel data dimension indication information. Segment number information, measured bandwidth information, channel signal to noise ratio information, and packet information.
  • the N segmented frames sent by the receiving channel feedback station are used, wherein the N segmented frames are filled with channel information of the M subcarrier groups to be fed back, and the M to be fed back
  • the channel information of the subcarrier group is cross-filled into the N segment frames, the M is an integer greater than 1, and the N is an integer greater than or equal to 1, and the subcarrier group includes one or Multiple subcarriers; acquiring channel information of the M subcarrier groups to be fed back filled in the N segment frames, which can reduce the overhead of network retransmission segments.
  • FIG. 1 is a schematic diagram of a WLAN basic service set in the related art
  • FIG. 2 is a schematic diagram of a probe report transmission in the related art
  • FIG. 3 is a flowchart of a method for acquiring channel information according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a channel information transmitting method according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a channel information acquiring apparatus according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a first obtaining module 54 in a channel information acquiring apparatus according to an embodiment of the present invention
  • FIG. 7 is a block diagram showing an optional structure of the first obtaining module 54 in the channel information acquiring apparatus according to an embodiment of the present invention.
  • FIG. 8 is a block diagram 1 of an optional structure of a channel information acquiring apparatus according to an embodiment of the present invention.
  • FIG. 9 is a block diagram 2 of an optional structure of a channel information acquiring apparatus according to an embodiment of the present invention.
  • FIG. 10 is a block diagram showing the structure of a channel information transmitting apparatus according to an embodiment of the present invention.
  • FIG. 11 is a block diagram 1 of an optional structure of a channel information transmitting apparatus according to an embodiment of the present invention.
  • FIG. 12 is a block diagram 2 of an optional structure of a channel information transmitting apparatus according to an embodiment of the present invention.
  • FIG. 13 is a block diagram showing an optional structure of a third transmitting module 104 in a channel information transmitting apparatus according to an embodiment of the present invention
  • FIG. 14 is a schematic diagram of a cross-selected subcarrier filling segment frame according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a channel information acquisition method according to an embodiment of the present invention. The method is applied to a channel detection site. As shown in FIG. 3, the process includes the following steps. :
  • Step S302 Receive N segment frames sent by the channel feedback station, where the N segment frames are filled with channel information of M subcarrier groups to be fed back, and M subcarrier groups to be fed back The channel information is cross-filled into N segment frames, the M is an integer greater than 1, N is an integer greater than or equal to 1, and the subcarrier group includes one or more subcarriers;
  • Step S304 acquiring channel information of the M subcarrier groups to be fed filled in the N segment frames.
  • the channel information of the subcarrier group filled in the received segment frame is cross-filled with the subcarrier group, and there are also multiple ways of cross-filling, which can be cross-filled according to the interval (ie, numbering).
  • Channels of subcarrier groups of 1, 3, 5, 7... are padded into a segmented frame
  • channels of subcarrier groups numbered 2, 4, 6, 8, ... are padded into a segmented frame
  • intervals for 2 cross-packets ie, the channels of the sub-carrier groups numbered 1, 4, 7, 10... are filled into one segment frame
  • the channels of the subcarrier groups numbered 3, 6, 9, 12, ... are padded into one segment frame, or other predetermined intervals are cross-filled.
  • the interval selected during cross-filling should satisfy certain conditions, for example, the interval should be related to the coherence bandwidth of the currently used wireless channel.
  • the so-called coherence bandwidth refers to a specific frequency range, and any two frequencies within the frequency range. The components are highly correlated. And, it can be determined that there is a predetermined connection between consecutive subcarrier groups, that is, the channel information of the adjacent subcarrier groups according to the subcarrier group to be estimated is capable of estimating the subcarrier to be estimated. Channel information.
  • segment frames reduce the overhead of network retransmission segments.
  • acquiring channel information of the M sub-carrier groups to be fed back filled in the N segment frames comprises: determining a correctly received segment frame; filling the segment frame with the correctly received segment The channel information of the subcarrier group determines channel information of the M subcarrier groups to be fed back.
  • the following method may be adopted: using the segment frame corresponding to the incorrectly received segment
  • the subcarrier group adjacent to the subcarrier group estimates the channel information of the subcarrier group corresponding to the segment frame that is not correctly received, where the subcarrier group corresponding to the segment frame that is not correctly received is the incorrect reception.
  • the subcarrier group corresponding to the channel information of the subcarrier group filled in the segmented frame, and the adjacent subcarrier group is the subcarrier group corresponding to the channel information of the subcarrier group filled in the segment frame that is correctly received;
  • Channel information of the subcarrier group filled in the segment frame that is not correctly received and correct The channel information of the subcarrier groups filled in the received segmented frame determines channel information of the M subcarrier groups to be fed back. Therefore, in this embodiment, channel information of the subcarrier group in the segment frame that is not correctly received is estimated by using subcarriers adjacent to the subcarrier group in the segment frame that is not correctly received. Therefore, it is not necessary to retransmit the segmented frame that is not correctly received, which reduces the overhead of network retransmission segmentation.
  • the weight of the channel information of the subcarrier group filled in the correctly received segment frame is correctly received.
  • the subcarrier group number is inversely proportional to the distance of the subcarrier group number that is not correctly received, wherein the correctly received subcarrier group number is the channel information corresponding to the used subcarrier group filled in the correctly received segment frame.
  • the number of the subcarrier group, the subcarrier group number that is not correctly received is the number of the subcarrier group corresponding to the channel information of the subcarrier group filled in the segment frame that is not correctly received.
  • the method further includes: when the number of correctly received segmented frames is less than or equal to a threshold, sending, to the channel feedback site, requesting channel feedback The station retransmits the channel report polling frame of the segmented frame that was not correctly received.
  • the channel feedback site needs to be requested to retransmit the segment frame that is not correctly received, and when the channel feedback site is requested to retransmit the segment frame that is not correctly received, the channel feedback site may be requested to retransmit all the frames.
  • the segmented frame that is not correctly received may also request the channel feedback site to retransmit part of the fragmented frame that is not correctly received, and the number of requests may also be multiple times.
  • the correctly received segmented frame is found.
  • the channel feedback station may be requested to retransmit the segment frame that was not correctly received until the number of correctly received segment frames is greater than the threshold.
  • the method before receiving the N segment frames sent by the channel feedback site, the method further includes: sending, to the channel feedback site, a sounding signal for detecting channel information of the subcarrier group to be fed back, where The sounding signal is used by the channel feedback station to acquire channel information of L subcarrier groups, where L is an integer greater than 1, and L is greater than or equal to M.
  • the method before receiving the N segment frames sent by the channel feedback site, the method further includes: sending an indication message for indicating the value of N and/or M to the channel feedback site.
  • the values of N and/or M can also be determined by the channel feedback site itself or by other stations.
  • the indication message for indicating the value of M includes the bandwidth of the required channel information and the indication information of the frequency band.
  • the channel information of the subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; and multiple subcarrier groups Channel information synthesized by channel information of a carrier.
  • the subcarrier group may include only one subcarrier, or may include multiple subcarriers, when the subcarrier group includes multiple subcarriers,
  • One subcarrier in the carrier group may be any one of the subcarrier groups, or may be a subcarrier determined according to a predetermined rule.
  • each of the N segmented frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, and a channel. Data dimension indication information, number of segments information, measured bandwidth information, channel signal to noise ratio information, grouping information. The above information included in the segment frame may be used to estimate channel information of subcarriers adjacent to the subcarrier group corresponding to the segment frame.
  • FIG. 4 is a flowchart of a method for transmitting channel information according to an embodiment of the present invention. The method is applied to a channel feedback site. As shown in FIG. 4, the process includes the following steps:
  • Step S402 the channel information of the M subcarrier groups to be fed back is cross-filled into N segment frames, where M is an integer greater than 1, and N is an integer greater than or equal to 1, and the subcarrier group includes one Or multiple subcarriers;
  • Step S404 the N segment frames are sent to the channel sounding station.
  • the cross-filling method is adopted, so that the subcarrier group can be sequentially filled into the segmented frame, and there are various ways of cross-filling.
  • the subcarrier group of the subcarrier group numbered 1, 3, 5, 7, ... is filled into a segment frame, and the subcarrier groups numbered 2, 4, 6, 8, ...
  • the channel is padded into a segmented frame, or the interval is 2 cross-packets (ie, the channels of the subcarrier groups numbered 1, 4, 7, 10... are filled into a segmented frame, numbered 2, 5,
  • the interval should satisfy certain conditions, for example, the interval should be related to the coherence bandwidth of the currently used wireless channel.
  • the so-called coherence bandwidth refers to a specific frequency range, and any two frequency components in the frequency range have strong Correlation.
  • there is a predetermined connection between the consecutive subcarrier groups that is, the channel information of the adjacent subcarrier groups according to the subcarrier group to be estimated is the channel information of the subcarrier to be estimated.
  • the channel sounding station receives the segmented frame, even if all the segmented frames are not correctly received, it is possible to estimate the segmented frame that is not correctly received according to the correctly received segmented frame, without the channel
  • the feedback site retransmits the segmented frames that are not correctly received, which reduces the overhead of network retransmission segments.
  • the method before the channel information of the M subcarrier groups to be fed back is cross-filled into the N segment frames, the method further includes: receiving, by the channel sounding station, the sub-sent for detecting the to-be-feedback a sounding signal of the channel information of the carrier group; acquiring channel information of the L subcarrier groups according to the sounding signal, wherein the L is an integer greater than 1, and L is greater than or equal to M.
  • the method before the channel information of the M subcarrier groups to be fed back is cross-filled into the N segment frames, the method further includes: receiving, by the channel sounding station, the indication M and/or N The indication of the value.
  • the indication message for indicating the value of the M includes the bandwidth of the required channel information and the indication information of the frequency band.
  • the channel information of the foregoing subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; and channel information information of multiple subcarriers in the subcarrier group. Synthesized channel information.
  • the subcarrier group may include only one subcarrier, or may include multiple subcarriers, when the subcarrier group includes multiple subcarriers,
  • One subcarrier in the carrier group may be any one of the subcarrier groups, or may be a subcarrier determined according to a predetermined rule.
  • the length of the channel information of the subcarrier group filled in each of the N segment frames is less than or equal to the maximum data unit block length supported by the channel sounding station.
  • sending the N segment frames to the channel sounding station comprises: encapsulating the N segment frames into N media access control layer protocol data units MPDU; and synthesizing the N MPDUs into one Aggregating the medium access control protocol data unit A-MPDU; transmitting the A-MPDU to the channel sounding station.
  • each of the N segmented frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, channel data dimension indication information, Segment number information, measured bandwidth information, channel signal to noise ratio information, grouping information.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a computer storage medium having stored therein computer executable instructions for performing the above method.
  • a channel information obtaining apparatus is further provided, which is used to implement the foregoing embodiments and optional implementation manners, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 5 is a structural block diagram of a channel information acquiring apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes a first receiving module 52 and a first acquiring module 54, which are described below.
  • the first receiving module 52 is configured to receive the N segmented frames sent by the channel feedback station, where the N segment frames are filled with channel information of the M subcarrier groups to be fed back, and the M to be fed back
  • the channel information of the carrier group is cross-filled into N segment frames, and M is greater than 1.
  • the first obtaining module 54 is connected to the first receiving module 52, and is configured to acquire channel information of the M subcarrier groups to be fed back filled in the N segment frames.
  • FIG. 6 is a structural block diagram of a first obtaining module 54 in a channel information acquiring apparatus according to an embodiment of the present invention. As shown in FIG. 6, the first obtaining module 54 includes a first determining unit 62 and a second determining unit 64. The first acquisition module 54 will be described.
  • a first determining unit 62 configured to determine a segment frame that is correctly received
  • the second determining unit 64 is connected to the first determining unit 62, and is configured to determine channel information of the M subcarrier groups to be fed back by using channel information of the subcarrier group filled in the correctly received segmented frame.
  • the foregoing second determining unit 64 is configured to: estimate a subcarrier group corresponding to the incorrectly received segment frame by using a subcarrier group adjacent to the subcarrier group corresponding to the segment frame that is not correctly received.
  • Channel information where the subcarrier group corresponding to the segment frame that is not correctly received is a subcarrier group corresponding to channel information of the subcarrier group filled in the segment frame that is not correctly received, and the adjacent subcarrier group is The subcarrier group corresponding to the channel information of the subcarrier group filled in the segment frame that is correctly received; the channel information of the subcarrier group filled in the estimated segment frame that is not correctly received and the correctly received segment frame padding
  • the channel information of the subcarrier group determines the channel information of the M subcarrier groups to be fed back.
  • the weight of the channel information of the subcarrier group filled in the correctly received segment frame is used and the correctly received subcarrier
  • the carrier group number is inversely proportional to the distance of the subcarrier group number that is not correctly received, wherein the correctly received subcarrier group number is corresponding to the channel information of the subcarrier group filled in the correctly received segment frame used.
  • the number of the subcarrier group, the subcarrier group number that is not correctly received is the number of the subcarrier group corresponding to the channel information of the subcarrier group filled in the segment frame that is not correctly received.
  • FIG. 7 is a block diagram showing an optional structure of the first obtaining module 54 in the channel information acquiring apparatus according to the embodiment of the present invention.
  • the first acquiring module 54 includes all the units shown in FIG.
  • the first sending unit 72 describes the first acquiring module 54 below.
  • the first sending unit 72 is connected to the first determining unit 62, and is set to be correctly received.
  • the channel feedback station transmits a channel report poll frame for requesting the channel feedback site to retransmit the segment frame that was not correctly received.
  • FIG. 8 is a block diagram of an optional structure of a channel information acquiring apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes a first sending module 82 in addition to all the modules shown in FIG. The device is described.
  • the first sending module 82 is connected to the first receiving module 52, and is configured to send, to the channel feedback station, a sounding signal for detecting channel information of the subcarrier group to be fed back, wherein the sounding signal is used for channel feedback site acquisition.
  • Channel information of subcarrier groups, L is an integer greater than 1, and L is greater than or equal to M.
  • FIG. 9 is a second block diagram of an optional structure of a channel information acquiring apparatus according to an embodiment of the present invention. As shown in FIG. 9, the apparatus includes a second sending module 92 in addition to all the modules shown in FIG. The device is described.
  • the second sending module 92 is connected to the first receiving module 52, and is configured to send an indication message for indicating the value of N and/or M to the channel feedback site.
  • the indication message for indicating the value of the M includes the bandwidth of the required channel information and the indication information of the frequency band.
  • the channel information of the foregoing subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; and channel information information of multiple subcarriers in the subcarrier group. Synthesized channel information.
  • each of the N segmented frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, channel data dimension indication information, Segment number information, measured bandwidth information, channel signal to noise ratio information, grouping information.
  • FIG. 10 is a structural block diagram of a channel information transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 10, the apparatus includes a filling module 102 and a third transmitting module 104, which will be described below.
  • the filling module 102 is configured to cross-fill channel information of the M subcarrier groups to be fed back into the N segment frames, where M is an integer greater than 1, and N is an integer greater than or equal to 1, the subcarrier group Include one or more subcarriers;
  • the third sending module 104 is connected to the filling module 102, and is configured to send N segment frames. Send to the channel detection site.
  • FIG. 11 is a block diagram of an optional structure of a channel information transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 11, the apparatus includes a second receiving module 112 and a second acquiring, in addition to all the modules shown in FIG. Module 114, the device will be described below.
  • the second receiving module 112 is configured to receive a sounding signal sent by the channel sounding station for detecting channel information of the subcarrier group to be fed back;
  • the second obtaining module 114 is connected to the second receiving module 112 and the filling module 102, and is configured to acquire channel information of L subcarrier groups according to the sounding signal, wherein the L is an integer greater than 1, and L is greater than or equal to M.
  • FIG. 12 is a block diagram showing an optional structure of a channel information transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 12, the apparatus includes a third receiving module 122 in addition to all the modules shown in FIG. The device is described.
  • the third receiving module 122 is connected to the filling module 102, and is configured to receive an indication message sent by the channel detecting station for indicating the value of M and/or N.
  • the indication message for indicating the value of the M includes the bandwidth of the required channel information and the indication information of the frequency band.
  • the channel information of the foregoing subcarrier group includes at least one of: channel information of one subcarrier in the subcarrier group; channel information of multiple subcarriers in the subcarrier group; and channel information information of multiple subcarriers in the subcarrier group. Synthesized channel information.
  • the length of the channel information of the subcarrier group filled in each of the N segment frames is less than or equal to the maximum data unit block length supported by the channel sounding station.
  • the filling module 102 is configured to: fill channel information of the ith subcarrier group of the M subcarrier groups to be fed into the (i mod N)+1 points in the N segment frames.
  • FIG. 13 is a block diagram showing an optional structure of a third transmitting module 104 in a channel information transmitting apparatus according to an embodiment of the present invention.
  • the third transmitting module 104 includes an encapsulating unit 132, an aggregating unit 134, and a second transmitting unit. 136.
  • the third transmitting module 104 will be described below.
  • Encapsulation unit 132 configured to encapsulate N segment frames into N media access control layer protocol numbers According to the unit MPDU;
  • the aggregation unit 134 is connected to the foregoing encapsulation unit 132, and is configured to aggregate N MPDUs into one aggregate medium access control protocol data unit A-MPDU;
  • the second sending unit 136 is connected to the foregoing aggregating unit 134 and configured to send the A-MPDU to the channel detecting station.
  • each of the N segmented frames includes at least one of the following information: segment number information, indication information indicating whether the segment is a start segment, channel data dimension indication information, Segment number information, measured bandwidth information, channel signal to noise ratio information, grouping information.
  • a new segment (same segment segment) transmission method is designed in the embodiment of the present invention, and all channel information can be obtained under the condition that part of the segment is lost and no retransmission is performed. Reduce the overhead of network retransmission segmentation and further improve network efficiency.
  • the STA1 wants to send data to its associated access station AP. In order to obtain a more reliable transmission, STA1 performs a channel measurement process. At this time, STA1 is the channel probe and the AP is the channel feedback.
  • the specific process is as follows:
  • STA1 sends a channel sounding notification frame, informs the AP to perform channel measurement, and transmits a sounding signal NDP after the notification frame.
  • the AP receives the notification frame and detects the subsequent NDP, measures the estimated channel state, and generates a measurement report.
  • the antenna configuration is 4 ⁇ 4
  • the feedback report length of each subcarrier is 60 bits (the low precision is 36 bits). Since the feedback measurement report is larger than 7020 Bytes, which exceeds the maximum MPDU length supported by the station (assumed to be 3895 Bytes), the feedback party segments the feedback report.
  • the number of segments N is guaranteed The integer, that is, N ⁇ 2, the value of N can take the minimum value through a predefined rule, or the maximum value possible. For example, the maximum number of segments supported by the protocol pre-defined is 8, then the default score can be assumed. The number of segments is taken as 8, and in this embodiment, N is assumed to be a minimum value of 2.
  • the AP cross-selects the channel information of the sub-carriers to be fed back into the determined two feedback report segment frames, and aggregates the report segment frames into the channel probes.
  • the sub-carrier group can be considered to contain only one sub-carrier. The price is moderate in this implementation. specific:
  • FIG. 14 is a schematic diagram of a cross-selection subcarrier filling segment frame according to an embodiment of the present invention.
  • the MPDUs in which the two segment frames are located are aggregated into one A-MPDU and sent to STA1 in one radio frame.
  • STA1 receives the above-mentioned radio frame including a plurality of segments of feedback information, and assumes that only segment 1 is received correctly, and segment 2 is subject to interference error.
  • STA1 reports the total number of segments indicated in the segmentation frame 1 according to the feedback report, the dimension of the channel information fed back (related to the antenna configuration), the accuracy of the feedback, the sequence number of the segment, and the like, and knows that the 0, 2, and 4 are correctly received. Across 934 subcarrier feedback, the other has an error.
  • the coherent bandwidth characteristics of the channel it is considered that there is a strong correlation between adjacent subcarriers, and STA1 estimates the entire channel according to the segmentation frame that receives the correct feedback report.
  • the channel information estimator according to subcarriers 0 and 2 is used.
  • the carrier 1 information is estimated based on the information of 2 and 4 subcarriers, and so on.
  • the interval between subcarriers 0 and 2 and subcarrier No. 1 is the same, and the weights are the same when estimated.
  • the algorithm used can be a variety of linear interpolation or nonlinear interpolation algorithms that have been used so far.
  • STA1 does not need to send a feedback report polling frame to the AP, and requires the AP to retransmit the feedback report segment frame 2, which saves transmission overhead.
  • the AP wants to send data to its associated STA1 and STA2. In order to obtain a more reliable transmission, the AP performs a channel measurement process. At this time, the AP is a channel probe, and STA1 and STA2 are channel feedback parties.
  • the process includes:
  • the AP sends a channel sounding notification frame, including the identifiers of STA1 and STA2 and its measurement parameters, informing STA1 and STA2 to perform channel measurement, and transmitting a sounding signal NDP after the notification frame, and STA1 and STA2 receive the notification frame and detect the subsequent NDP measures the estimated channel state and generates a measurement report.
  • STA1 and STA2 sequentially feed back the channel measurement report. It is assumed that STA1 feeds back immediately after NDP, and STA2 waits for feedback from the AP after receiving it.
  • the carrier, DC subcarrier, etc. do not require a feedback measurement report.
  • the antenna configuration is 4 ⁇ 4
  • the feedback report length of each subcarrier is 60 bits (the low precision is 36 bits). Since the feedback measurement report is larger than 7020 Bytes, which exceeds the maximum MPDU length supported by the site (assumed to be 3895 Bytes), the feedback party needs to segment the feedback report. And the number of segments N is guaranteed The integer, that is, N ⁇ 2.
  • the AP may specify or recommend the values of M and N to the station.
  • the packet feeds back information of one subcarrier for example, 0 and 1 are a group, only feedback information of subcarrier No. 1 is received, no feedback of No. 0, and so on, and the number of subcarrier channel information to be fed back is 1, 3, ..., 935.
  • the STA1 cross-selects the channel information of the 468 subcarriers to be fed back into the determined two feedback report segment frames, and aggregates the report segment frames and sends them to the channel probes. include:
  • Each subcarrier group only feeds back the channel information of one subcarrier, and specifically corresponds to the original subcarrier number.
  • the information of the first, fifth, ninth, ..., 933 subcarriers is put into the first segment, and the remaining Put in the second segmented frame.
  • Each segmented frame indicates its own segment number, the total number of segments, and STA1 will report the total subcarriers of the report and select a feedback situation.
  • the MPDUs in which the two segment frames are located are aggregated into one A-MPDU and sent to the AP in one radio frame.
  • STA2 waits for the polling report of the AP to send a probe report. Similar to STA1, the 936 subcarriers are selected in the four feedback report segment frames and aggregated and sent to the AP.
  • the AP receives the radio frame that is sent by the foregoing STA1 and includes multiple feedback report segment frames, assuming that all are correct.
  • the AP sends a polling frame to request STA2 to report the report and receive multiple feedback report segment frames sent by STA2. It is assumed that only the segment 2 frames of the four segment frames are correctly received, and other errors occur. According to the coherent bandwidth characteristics of the channel, the AP considers that there are too many missing segments. According to the channel coherence characteristics, the error of all feedback reports is larger than the preset threshold T (assuming T is at least half of the subcarriers), then the AP Continue to poll STA2 to resend the erroneous segmentation frame. If STA2 resends the segmentation frames 1, 3, and 4, and the AP receives two of the segments 1 and 4, the AP considers that the missing segment can be estimated. Then, the AP acquires the channel information of all the subcarriers by using the segmented frame 1, 2, and 4, instead of requiring the STA2 to continue to retransmit the segment 3.
  • the channel sounding party and the channel feedback party can flexibly select the values of M and N as long as the basic segment size and number are not exceeded, and the channel sounding party can indicate or suggest the amount of data fed back by the channel feedback party.
  • the channel sounding party can judge whether it is necessary to retransmit the erroneous segment according to the number of received segmented frames, and balance the channel estimation accuracy and feedback overhead.
  • the AP wants to send data to its associated STA1.
  • the AP performs the channel measurement process.
  • the AP is the channel probe and the STA1 is the channel feedback.
  • the specific process is as follows:
  • the AP sends a channel sounding notification frame, informing STA1 to perform channel measurement, and transmitting a sounding signal NDP after the notification frame.
  • STA1 receives the notification frame and detects the subsequent NDP, measures the estimated channel state, and generates a measurement report.
  • the carrier, DC subcarrier, etc. do not require a feedback measurement report.
  • the antenna configuration is 4 ⁇ 4
  • the feedback report length of each subcarrier is 60 bits (the low precision is 36 bits).
  • the STA1 cross-selects the channel information of the 468 subcarrier group to be fed back to the determined four inverses.
  • the report segment frame is aggregated and sent to the channel prober. specific:
  • the channel information of each data subcarrier group contains channel information of two subcarriers.
  • Each segmented frame indicates its own segment number, the total number of segments, and STA1 will report the total subcarriers of the report and select a feedback situation.
  • the MPDUs in which the four segment frames are located are aggregated into one A-MPDU and sent to the AP in one radio frame.
  • the AP receives the radio frame that is sent by the foregoing STA1 and includes multiple feedback report segment frames, and selects to trigger the STA1 retransmission according to the received correct number of segmented frames or acquires all channel information according to the received segmented frame.
  • the AP wants to send data to its associated STA1.
  • the AP performs a channel measurement process.
  • the AP is the channel probe and STA1 is the channel feedback.
  • the process includes:
  • the AP sends a channel sounding notification frame, informing STA1 to perform channel measurement, and transmitting a sounding signal NDP after the notification frame.
  • STA1 receives the notification frame and detects the subsequent NDP, measures the estimated channel state, and generates a measurement report.
  • the feedback party needs to segment the feedback report to ensure that the transmission quality avoids all errors.
  • the STA1 cross-selects the channel information of the 468 subcarrier group to be fed back into the determined four feedback report segment frames, and aggregates the report segment frames and sends them to the channel probe party.
  • the channel information to be fed back is the average of the channel information of the two subcarriers in the group.
  • Each segmented frame indicates its own segment number, the total number of segments, and STA1 will report the total subcarriers of the report and select a feedback situation.
  • the MPDUs in which the four segment frames are located are aggregated into one A-MPDU and sent to the AP in one radio frame.
  • the AP receives the radio frame that is sent by the foregoing STA1 and includes multiple feedback report segment frames, and selects to trigger the STA1 retransmission according to the received correct number of segmented frames or acquires all channel information according to the received segmented frame.
  • the values of M and N may be specified or suggested, and the bandwidth or frequency band of the channel information of the M subcarrier groups may be additionally indicated.
  • the AP requires STA1 and STA2 to perform channel sounding. It is assumed that the bandwidth to be detected by the AP is 80 MHz. However, the AP does not want STA1 and STA2 to feed back 80 MHz channel information.
  • the AP sends a channel sounding notification frame or other information to STA1/1.
  • the STA2 frame indicates that STA1 only feeds back the upper 40 MHz channel information in the 80 MHz channel, and STA2 only feeds back the 40 MHz channel information. That is, the AP sends the 80 MHz measurement signal NDP, but indicates that the bandwidth of the channel feedback side to be fed back can be smaller than 80 MHz, which allows the channel feedback party to only feed back the channel detection report of part of the bandwidth or frequency band.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • the storage medium is further arranged to store program code for performing the following steps:
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the entire channel sounding report can be obtained without retransmission in the case of some segment loss, thereby reducing the overhead of the channel feedback process and improving Network efficiency.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above technical solution can reduce the overhead of network retransmission segmentation.

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Abstract

一种信道信息获取方法、发送方法、获取装置及发送装置，其中，该信道信息获取方法包括：接收信道反馈站点发送的N个分段帧，其中，该N个分段帧中共填充有M个待反馈的子载波组的信道信息，M个待反馈的子载波组的信道信息是被交叉填充至N个分段帧中的，该M为大于1的整数，N为大于或等于1的整数，子载波组中包括一个或多个子载波；获取N个分段帧中填充的M个待反馈的子载波组的信道信息。上述技术方案可减小网络重传分段的开销。

Description

信道信息获取方法、发送方法、获取装置及发送装置 技术领域
本文涉及但不限于通信领域，具体而言，涉及一种信道信息获取方法、发送方法、获取装置及发送装置。
背景技术
目前，在无线网络领域，无线局域网(Wireless Local，简称为WLAN)快速发展，例如，802.11a/g使用正交频分复用(Orthogonal Frequency Division Multiplexing，简称为OFDM)传输技术，而802.11n又引入多输入多输出(Multiple Input Multiple Output，简称为MIMO)和波束赋形技术，从此，802.11的标准将OFDM和MIMO作为一项基本的技术进行继承，下一代的WLAN标准，包括802.11aj(45GHz)、802.11ax，802.11ay都会使用OFDM和MIMO技术。
WLAN中，一个接入点站点(Access Point，简称为AP)以及与该AP相关联的多个非接入点站点(non-AP Station，简称为non-AP STA)组成了一个基本服务集(Basic Service Set，简称为BSS)，如图1所示，图1是相关技术中的WLAN基本服务集示意图。无线传输时，发送方要了解当前的无线信道状态，而发送方获取信道状态的过程称之为探测(sounding)过程，具体的包括信道探测方(beamformer)发送测量信号，信道反馈方(beamformee)测量上述信号，测量估计出通信带宽内所有子载波的探测报告并将该报告反馈给Beamformer。这样发送方就可以使用获取的报告调整发送参数以便得到想要的传输结果。相关技术为了提高探测报告的传输效率使用了媒体介入控制(Media Access Control，简称为MAC)层分段技术，图2是相关技术中的探测报告传输示意图，如图2所示，探测方发送通知帧，告知反馈方要进行信道测量，并在通知帧后发送探测信号，反馈方检测探测信号，测量估计信道状态，并生成测量报告，由于测量报告较大超过了支持的单个数据单元块最 大长度，反馈方按照相关技术中定义的规则将反馈报告进行分段，其中除了最后一个分段外，所有分段都是固定大小，且等于支持的数据块最大长度。反馈方将上述分段进行聚合并一起发送给探测方，假设第一次发送过程中，分段2受到干扰接收错误，则探测方发送反馈报告轮询帧给反馈方，要求重传分段2，并指示其他分段不需要重传。这样就避免了每次出错就重传整个测量报告。但是探测方要获取分段2才能获取完整的信道信息，所以若任何一个分段出错上述重传过程是必须的。
从上述过程可以看出，相关技术中的分段技术只是减少了重传时的数据量，但发送方仍然要正确接收到所有的分段信息才能够获取信道信息，造成了网络重传分段的开销大的问题。
针对相关技术中存在的网络重传分段的开销大的问题，目前尚未提出有效的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种信道信息获取方法、发送方法、获取装置及发送装置，可减小网络重传分段的开销。
根据本发明实施例的一个方面，提供了一种信道信息获取方法，包括：接收信道反馈站点发送的N个分段帧，其中，所述N个分段帧中共填充有M个待反馈的子载波组的信道信息，所述M个待反馈的子载波组的信道信息是被交叉填充至所述N个分段帧中的，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；获取所述N个分段帧中填充的所述M个待反馈的子载波组的信道信息。
可选地，获取所述N个分段帧中填充的所述M个待反馈的子载波组的信道信息包括：确定正确接收的分段帧；利用所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
可选地，利用所述正确接收的分段帧中填充的子载波组的信道信息确定 所述M个待反馈的子载波组的信道信息包括：利用与未正确接收的分段帧对应的子载波组相邻的子载波组估计所述未正确接收的分段帧对应的子载波组的信道信息，其中，所述未正确接收的分段帧对应的子载波组为所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组，所述相邻的子载波组为被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组；根据估计的所述未正确接收的分段帧中填充的子载波组的信道信息和所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
可选地，在估计所述未正确接收的分段帧中填充的子载波组的信道信息时，所利用的被正确接收的分段帧中填充的子载波组的信道信息的权重与正确接收的子载波组编号和未被正确接收的子载波组编号的距离成反比，其中，所述正确接收的子载波组编号是所述所利用的被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号，所述未被正确接收的子载波组编号是所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号。
可选地，在确定正确接收的分段帧之后，还包括：当所述正确接收的分段帧的个数小于或者等于门限值时，向所述信道反馈站点发送用于请求所述信道反馈站点重传未正确接收的分段帧的信道报告轮询帧。
可选地，在接收信道反馈站点发送的N个分段帧之前，还包括：向所述信道反馈站点发送用于探测所述待反馈的子载波组的信道信息的探测信号，其中，所述探测信号用于所述信道反馈站点获取L个子载波组的信道信息，所述L为大于1的整数，所述L大于或等于所述M。
可选地，在接收信道反馈站点发送的N个分段帧之前，还包括：向所述信道反馈站点发送用于指示所述N和/或所述M的取值的指示消息。
可选地，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
可选地，所述子载波组的信道信息包括以下至少之一：所述子载波组中一个子载波的信道信息；所述子载波组中多个子载波的信道信息；所述子载波组中多个子载波的信道信息所合成的信道信息。
可选地，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
根据本发明实施例的另一方面，提供了一种信道信息发送方法，包括：将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中，其中，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；将所述N个分段帧发送给信道探测站点。
可选地，在将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中之前，还包括：接收所述信道探测站点发送的用于探测所述待反馈的子载波组的信道信息的探测信号；根据所述探测信号获取L个子载波组的信道信息，其中，所述L为大于1的整数，所述L大于或等于所述M。
可选地，在将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中之前，还包括：接收所述信道探测站点发送的用于指示所述M和/或所述N的取值的指示消息。
可选地，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
可选地，所述子载波组的信道信息包括以下至少之一：所述子载波组中一个子载波的信道信息；所述子载波组中多个子载波的信道信息；所述子载波组中多个子载波的信道信息所合成的信道信息。
可选地，所述N个分段帧中的每个分段帧中填充的子载波组的信道信息的长度小于或等于所述信道探测站点支持的最大数据单元块长度。
可选地，将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中包括：将所述M个待反馈的子载波组中的第i个子载波组的信道信息填充至所述N个分段帧中的第(i mod N)+1个分段帧中，其中，i mod N为i除以N的余数，所述i＝0,1,2,3,…,M-1。
可选地，将所述N个分段帧发送给信道探测站点包括：将所述N个分段帧封装为N个媒体接入控制层协议数据单元MPDU；将所述N个MPDU聚合为一个聚合媒体接入控制协议数据单元A-MPDU；将所述A-MPDU发送 给所述信道探测站点。
可选地，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
根据本发明实施例的另一方面，提供了一种信道信息获取装置，包括：第一接收模块，设置为接收信道反馈站点发送的N个分段帧，其中，所述N个分段帧中共填充有M个待反馈的子载波组的信道信息，所述M个待反馈的子载波组的信道信息是被交叉填充至所述N个分段帧中的，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；第一获取模块，设置为获取所述N个分段帧中填充的所述M个待反馈的子载波组的信道信息。
可选地，所述第一获取模块包括：第一确定单元，设置为确定正确接收的分段帧；第二确定单元，设置为利用所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
可选地，所述第二确定单元是设置为：利用与未正确接收的分段帧对应的子载波组相邻的子载波组估计所述未正确接收的分段帧对应的子载波组的信道信息，其中，所述未正确接收的分段帧对应的子载波组为所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组，所述相邻的子载波组为被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组；根据估计的所述未正确接收的分段帧中填充的子载波组的信道信息和所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
可选地，在估计所述未正确接收的分段帧中填充的子载波组的信道信息时，所利用的被正确接收的分段帧中填充的子载波组的信道信息的权重与正确接收的子载波组编号和未被正确接收的子载波组编号的距离成反比，其中，所述正确接收的子载波组编号是所述所利用的被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号，所述未被正确接收的子载波组编号是所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号。
可选地，所述装置还包括：第一发送单元，设置为当所述正确接收的分段帧的个数小于或等于门限值时，向所述信道反馈站点发送用于请求所述信道反馈站点重传未正确接收的分段帧的信道报告轮询帧。
可选地，所述装置还包括：第一发送模块，设置为向所述信道反馈站点发送用于探测所述待反馈的子载波组的信道信息的探测信号，其中，所述探测信号用于所述信道反馈站点获取L个子载波组的信道信息，所述L为大于1的整数，所述L大于或等于所述M。
可选地，所述装置还包括：第二发送模块，设置为向所述信道反馈站点发送用于指示所述N和/或所述M的取值的指示消息。
可选地，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
可选地，所述子载波组的信道信息包括以下至少之一：所述子载波组中一个子载波的信道信息；所述子载波组中多个子载波的信道信息；所述子载波组中多个子载波的信道信息所合成的信道信息。
可选地，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
根据本发明实施例的另一方面，提供了一种信道信息发送装置，包括：填充模块，设置为将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中，其中，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；第三发送模块，设置为将所述N个分段帧发送给信道探测站点。
可选地，所述装置还包括：第二接收模块，设置为接收所述信道探测站点发送的用于探测所述待反馈的子载波组的信道信息的探测信号；第二获取模块，设置为根据所述探测信号获取L个子载波组的信道信息，其中，所述L为大于1的整数，所述L大于或等于所述M。
可选地，所述装置还包括：第三接收模块，设置为接收所述信道探测站点发送的用于指示所述M和/或所述N的取值的指示消息。
可选地，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
可选地，所述子载波组的信道信息包括以下至少之一：所述子载波组中一个子载波的信道信息；所述子载波组中多个子载波的信道信息；所述子载波组中多个子载波的信道信息所合成的信道信息。
可选地，所述N个分段帧中的每个分段帧中填充的子载波组的信道信息的长度小于或等于所述信道探测站点支持的最大数据单元块长度。
可选地，所述填充模块是设置为：将所述M个待反馈的子载波组中的第i个子载波组的信道信息填充至所述N个分段帧中的第(i mod N)+1个分段帧中，其中，i mod N为i除以N的余数，所述i＝0,1,2,3,…,M-1。
可选地，所述第三发送模块包括：封装单元，设置为将所述N个分段帧封装为N个媒体接入控制层协议数据单元MPDU；聚合单元，设置为将所述N个MPDU聚合为一个聚合媒体接入控制协议数据单元A-MPDU；第二发送单元，设置为将所述A-MPDU发送给所述信道探测站点。
可选地，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
通过本发明实施例，采用接收信道反馈站点发送的N个分段帧，其中，所述N个分段帧中共填充有M个待反馈的子载波组的信道信息，所述M个待反馈的子载波组的信道信息是被交叉填充至所述N个分段帧中的，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；获取所述N个分段帧中填充的所述M个待反馈的子载波组的信道信息，可减小网络重传分段的开销。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是相关技术中的WLAN基本服务集示意图；
图2是相关技术中的探测报告传输示意图；
图3是根据本发明实施例的信道信息获取方法的流程图；
图4是根据本发明实施例的信道信息发送方法的流程图；
图5是根据本发明实施例的信道信息获取装置的结构框图；
图6是根据本发明实施例的信道信息获取装置中第一获取模块54的结构框图；
图7是根据本发明实施例的信道信息获取装置中第一获取模块54的可选结构框图；
图8是根据本发明实施例的信道信息获取装置可选结构框图一；
图9是根据本发明实施例的信道信息获取装置可选结构框图二；
图10是根据本发明实施例的信道信息发送装置的结构框图；
图11是根据本发明实施例的信道信息发送装置的可选结构框图一；
图12是根据本发明实施例的信道信息发送装置的可选结构框图二；
图13是根据本发明实施例的信道信息发送装置中第三发送模块104的可选结构框图；
图14是根据本发明实施例的交叉选取子载波填充分段帧的示意图。
本发明的实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种信道信息获取方法，图3是根据本发明实施例的信道信息获取方法的流程图，该方法应用于信道探测站点，如图3所示，该流程包括如下步骤：
步骤S302，接收信道反馈站点发送的N个分段帧，其中，该N个分段帧中共填充有M个待反馈的子载波组的信道信息，M个待反馈的子载波组 的信道信息是被交叉填充至N个分段帧中的，该M为大于1的整数，N为大于或等于1的整数，子载波组中包括一个或多个子载波；
步骤S304，获取N个分段帧中填充的M个待反馈的子载波组的信道信息。
从上述步骤可知，接收的分段帧中填充的子载波组的信道信息是对子载波组进行交叉填充的，交叉填充的方式也是有多种的，可以按照间隔为1交叉填充(即，编号为1、3、5、7…的子载波组的信道填充到一个分段帧中，编号为2、4、6、8…的子载波组的信道填充到一个分段帧中)，或者间隔为2交叉分组(即，编号为1、4、7、10…的子载波组的信道填充到一个分段帧中，编号为2、5、8、11…的子载波组的信道填充到一个分段帧中，编号为3、6、9、12…的子载波组的信道填充到一个分段帧中)，或者其他预定间隔交叉填充。另外，交叉填充时选取的间隔应满足一定的条件，例如其间隔应与当前使用的无线信道的相干带宽相关，所谓相干带宽是指一特定的频率范围，在该频率范围内的任意两个频率分量都具有很强的相关性。并且，能够确定的是连续的子载波组之间是存在预定联系的，也就是说根据待估计的子载波组的相邻的子载波组的信道信息是能够估计出该待估计的子载波的信道信息的。因此，在接收分段帧时，即使未能正确接收所有的分段帧，也可能根据正确接收的分段帧估计未正确接收的分段帧的，无需信道反馈站点重传未正确接收的分段帧，可减小网络重传分段的开销。
在一个可选的实施例中，获取N个分段帧中填充的M个待反馈的子载波组的信道信息包括：确定正确接收的分段帧；利用该正确接收的分段帧中填充的子载波组的信道信息确定M个待反馈的子载波组的信道信息。
可选地，在利用正确接收的分段帧中填充的子载波组的信道信息确定M个待反馈的子载波组的信道信息时，可以采用如下方法：利用与未正确接收的分段帧对应的子载波组相邻的子载波组估计所述未正确接收的分段帧对应的子载波组的信道信息，其中，该未正确接收的分段帧对应的子载波组为所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组，相邻的子载波组为被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组；根据估计的未正确接收的分段帧中填充的子载波组的信道信息和正确 接收的分段帧中填充的子载波组的信道信息确定M个待反馈的子载波组的信道信息。由此可知，在该实施例中，是通过利用未被正确接收的分段帧中的子载波组相邻的子载波估计出该未被正确接收的分段帧中的子载波组的信道信息的，从而不需要再重新传输该未被正确接收的分段帧，减少了网络重传分段的开销。
可选地，在估计上述未正确接收的分段帧中填充的子载波组的信道信息时，所利用的被正确接收的分段帧中填充的子载波组的信道信息的权重与正确接收的子载波组编号和未被正确接收的子载波组编号的距离成反比，其中，该正确接收的子载波组编号是所利用的被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号，该未被正确接收的子载波组编号是未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号。
在一个可选的实施例中，在确定正确接收的分段帧之后，还包括：当正确接收的分段帧的个数小于或者等于门限值时，向信道反馈站点发送用于请求信道反馈站点重传未正确接收的分段帧的信道报告轮询帧。当正确接收的分段帧的个数小于或等于门限值时，说明仅仅由该被正确接收的分段帧无法准确估计出未被正确接收的分段帧中子载波组的信道信息，为了避免造成较大的误差，此时需要请求信道反馈站点重传未正确接收的分段帧，并且，在请求信道反馈站点重传未正确接收的分段帧时，可以请求信道反馈站点重传所有的未正确接收的分段帧，也可以请求信道反馈站点重传部分未正确接收的分段帧，并且，请求次数也可以为多次，当一次请求完成后，发现正确接收的分段帧的个数还是小于或等于门限值时，可以请求信道反馈站点重传未正确接收的分段帧，直到正确接收的分段帧的个数大于门限值。
在一个可选的实施例中，在接收信道反馈站点发送的N个分段帧之前，还包括：向该信道反馈站点发送用于探测待反馈的子载波组的信道信息的探测信号，其中，该探测信号用于信道反馈站点获取L个子载波组的信道信息，该L为大于1的整数，L大于或等于M。
在一个可选的实施例中，在接收信道反馈站点发送的N个分段帧之前，还包括：向该信道反馈站点发送用于指示N和/或M的取值的指示消息。N和/或M的取值也可以由信道反馈站点自己确定，或者由其他站点进行确定。
在一个可选的实施例中，用于指示M的取值的指示消息中包含要求的信道信息的带宽及频段的指示信息。
在一个可选的实施例中，上述子载波组的信道信息包括以下至少之一：子载波组中一个子载波的信道信息；子载波组中多个子载波的信道信息；子载波组中多个子载波的信道信息所合成的信道信息。其中，当子载波组的信道信息包括子载波组中一个子载波的信道信息时，子载波组可以只包括一个子载波，也可以包括多个子载波，当子载波组包括多个子载波时，子载波组中的一个子载波可以使子载波组中的任意一个子载波，也可以是依据预定规则确定的子载波。
在一个可选的实施例中，上述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。分段帧中包含的上述信息可以用于推测与该分段帧对应的子载波组相邻的子载波的信道信息。
图4是根据本发明实施例的信道信息发送方法的流程图，该方法应用于信道反馈站点，如图4所示，该流程包括如下步骤：
步骤S402，将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中，其中，该M为大于1的整数，N为大于或等于1的整数，子载波组中包括一个或多个子载波；
步骤S404，将N个分段帧发送给信道探测站点。
通过上述步骤，在将子载波组的信道信息填充至分段帧中时，采用交叉填充的方式，从而可以将子载波组有序地填充到分段帧中，交叉填充的方式也是有多种的，可以按照间隔为1交叉填充(即，编号为1、3、5、7…的子载波组的信道填充到一个分段帧中，编号为2、4、6、8…的子载波组的信道填充到一个分段帧中)，或者间隔为2交叉分组(即，编号为1、4、7、10…的子载波组的信道填充到一个分段帧中，编号为2、5、8、11…的子载波组的信道填充到一个分段帧中，编号为3、6、9、12…的子载波组的信道填充到一个分段帧中)，或者其他预定间隔交叉填充。另外，交叉填充时选取的 间隔应满足一定的条件，例如其间隔应与当前使用的无线信道的相干带宽相关，所谓相干带宽是指某一特定的频率范围，在该频率范围内的任意两个频率分量都具有很强的相关性。并且，连续的子载波组之间是存在预定联系的，也就是说根据待估计的子载波组的相邻的子载波组的信道信息是能够估计出该待估计的子载波的信道信息的。因此，按照上述分组方式，当信道探测站点接收到分段帧时，即使未能正确接收所有的分段帧，也可能根据正确接收的分段帧估计未正确接收的分段帧的，无需信道反馈站点重传未正确接收的分段帧，可减小网络重传分段的开销。
在一个可选的实施例中，在将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中之前，还包括：接收该信道探测站点发送的用于探测待反馈的子载波组的信道信息的探测信号；根据探测信号获取L个子载波组的信道信息，其中，该L为大于1的整数，L大于或等于M。
在一个可选的实施例中，在将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中之前，还包括：接收信道探测站点发送的用于指示M和/或N的取值的指示消息。
可选地，用于指示M的取值的指示消息中包含要求的信道信息的带宽及频段的指示信息。
可选地，上述子载波组的信道信息包括以下至少之一：子载波组中一个子载波的信道信息；子载波组中多个子载波的信道信息；子载波组中多个子载波的信道信息所合成的信道信息。其中，当子载波组的信道信息包括子载波组中一个子载波的信道信息时，子载波组可以只包括一个子载波，也可以包括多个子载波，当子载波组包括多个子载波时，子载波组中的一个子载波可以使子载波组中的任意一个子载波，也可以是依据预定规则确定的子载波。
可选地，上述N个分段帧中的每个分段帧中填充的子载波组的信道信息的长度小于或等于信道探测站点支持的最大数据单元块长度。
在一个可选的实施例中，将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中包括：将M个待反馈的子载波组中的第i个子载波组的信道信息填充至N个分段帧中的第(i mod N)+1个分段帧中，其中，i mod N为i除以N的余数，该i＝0,1,2,3,…,M-1。
在一个可选的实施例中，将N个分段帧发送给信道探测站点包括：将N个分段帧封装为N个媒体接入控制层协议数据单元MPDU；将该N个MPDU聚合为一个聚合媒体接入控制协议数据单元A-MPDU；将A-MPDU发送给信道探测站点。
可选地，上述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。
在本实施例中还提供了一种信道信息获取装置，该装置用于实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本发明实施例的信道信息获取装置的结构框图，如图5所示，该装置包括第一接收模块52和第一获取模块54，下面对该装置进行说明。
第一接收模块52，设置为接收信道反馈站点发送的N个分段帧，其中，该N个分段帧中共填充有M个待反馈的子载波组的信道信息，该M个待反馈的子载波组的信道信息是被交叉填充至N个分段帧中的，M为大于1的 整数，N为大于或等于1的整数，子载波组中包括一个或多个子载波；
第一获取模块54，连接至上述第一接收模块52，设置为获取上述N个分段帧中填充的M个待反馈的子载波组的信道信息。
图6是根据本发明实施例的信道信息获取装置中第一获取模块54的结构框图，如图6所示，该第一获取模块54包括第一确定单元62和第二确定单元64，下面对该第一获取模块54进行说明。
第一确定单元62，设置为确定正确接收的分段帧；
第二确定单元64，连接至上述第一确定单元62，设置为利用正确接收的分段帧中填充的子载波组的信道信息确定M个待反馈的子载波组的信道信息。
可选地，上述第二确定单元64是设置为：利用与未正确接收的分段帧对应的子载波组相邻的子载波组估计所述未正确接收的分段帧对应的子载波组的信道信息，其中，该未正确接收的分段帧对应的子载波组为所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组，相邻的子载波组为被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组；根据估计的未正确接收的分段帧中填充的子载波组的信道信息和正确接收的分段帧中填充的子载波组的信道信息确定M个待反馈的子载波组的信道信息。
可选地，在估计未正确接收的分段帧中填充的子载波组的信道信息时，所利用的被正确接收的分段帧中填充的子载波组的信道信息的权重与正确接收的子载波组编号和未被正确接收的子载波组编号的距离成反比，其中，该正确接收的子载波组编号是所利用的被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号，未被正确接收的子载波组编号是未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号。
图7是根据本发明实施例的信道信息获取装置中第一获取模块54的可选结构框图，如图7所示，该第一获取模块54除包括图6所示的所有单元外，还包括第一发送单元72，下面对该第一获取模块54进行说明。
第一发送单元72，连接至上述第一确定单元62，设置为当正确接收的分 段帧的个数小于或等于门限值时，向信道反馈站点发送用于请求该信道反馈站点重传未正确接收的分段帧的信道报告轮询帧。
图8是根据本发明实施例的信道信息获取装置可选结构框图一，如图8所示，该装置除包括图5所示的所有模块外，还包括第一发送模块82，下面对该装置进行说明。
第一发送模块82，连接至上述第一接收模块52，设置为向信道反馈站点发送用于探测待反馈的子载波组的信道信息的探测信号，其中，该探测信号用于信道反馈站点获取L个子载波组的信道信息，L为大于1的整数，L大于或等于M。
图9是根据本发明实施例的信道信息获取装置可选结构框图二，如图9所示，该装置除包括图5所示的所有模块外，还包括第二发送模块92，下面对该装置进行说明。
第二发送模块92，连接至上述第一接收模块52，设置为向信道反馈站点发送用于指示N和/或M的取值的指示消息。
可选地，用于指示M的取值的指示消息中包含要求的信道信息的带宽及频段的指示信息。
可选地，上述子载波组的信道信息包括以下至少之一：子载波组中一个子载波的信道信息；子载波组中多个子载波的信道信息；子载波组中多个子载波的信道信息所合成的信道信息。
可选地，上述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
图10是根据本发明实施例的信道信息发送装置的结构框图，如图10所示，该装置包括填充模块102和第三发送模块104，下面对该装置进行说明。
填充模块102，设置为将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中，其中，该M为大于1的整数，N为大于或等于1的整数，子载波组中包括一个或多个子载波；
第三发送模块104，连接至上述填充模块102，设置为将N个分段帧发 送给信道探测站点。
图11是根据本发明实施例的信道信息发送装置的可选结构框图一，如图11所示，该装置除包括图10所示的所有模块外，还包括第二接收模块112和第二获取模块114，下面对该装置进行说明。
第二接收模块112，设置为接收信道探测站点发送的用于探测待反馈的子载波组的信道信息的探测信号；
第二获取模块114，连接至上述第二接收模块112和填充模块102，设置为根据探测信号获取L个子载波组的信道信息，其中，该L为大于1的整数，L大于或等于M。
图12是根据本发明实施例的信道信息发送装置的可选结构框图二，如图12所示，该装置除包括图10所示的所有模块外，还包括第三接收模块122，下面对该装置进行说明。
第三接收模块122，连接至上述填充模块102，设置为接收信道探测站点发送的用于指示M和/或N的取值的指示消息。
可选地，用于指示M的取值的指示消息中包含要求的信道信息的带宽及频段的指示信息。
可选地，上述子载波组的信道信息包括以下至少之一：子载波组中一个子载波的信道信息；子载波组中多个子载波的信道信息；子载波组中多个子载波的信道信息所合成的信道信息。
可选地，上述N个分段帧中的每个分段帧中填充的子载波组的信道信息的长度小于或等于信道探测站点支持的最大数据单元块长度。
可选地，上述填充模块102是设置为：将M个待反馈的子载波组中的第i个子载波组的信道信息填充至N个分段帧中的第(i mod N)+1个分段帧中，其中，i mod N为i除以N的余数，i＝0,1,2,3,…,M-1。
图13是根据本发明实施例的信道信息发送装置中第三发送模块104的可选结构框图，如图13所示，该第三发送模块104包括封装单元132、聚合单元134和第二发送单元136，下面对该第三发送模块104进行说明。
封装单元132，设置为将N个分段帧封装为N个媒体接入控制层协议数 据单元MPDU；
聚合单元134，连接至上述封装单元132，设置为将N个MPDU聚合为一个聚合媒体接入控制协议数据单元A-MPDU；
第二发送单元136，连接至上述聚合单元134，设置为将A-MPDU发送给信道探测站点。
可选地，上述N个分段帧中的每个分段帧中均包含以下信息至少之一：分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
通过上述实施例可知，本发明实施例中设计的是一种新的分段(同上述的分段帧)传输方法，可以在部分分段丢失且不进行重传的前提下获取全部信道信息，减少网络重传分段的开销，进一步提高网络效率。
以下结合具体实施例对本发明的进行说明，应当理解，此处所描述的可选实施例仅用于说明和解释本发明，并不用于限定本发明。在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
实施例一
站点STA1想要发送数据给自己关联的接入站点AP，为了获得更可靠的传输，STA1进行信道测量过程，此时STA1为信道探测方，AP为信道反馈方，具体的过程为：
STA1发送信道探测通知帧，告知AP要进行信道测量，并在通知帧后发送探测信号NDP，AP接收到通知帧并检测其后的NDP，测量估计信道状态，并生成测量报告。假设STA1要求测量的带宽为80MHz，包括了1024个子载波，其中用于传输数据的子载波需要反馈测量报告(假设为936个数据子载波，即M＝936)，而保护子载波，导频子载波，直流子载波等不需要反馈测量报告，假设天线配置为4×4，则每个子载波的反馈报告长度为60bits(低精度的为36bits)。由于要反馈测量报告较大7020Bytes，超过了站点支持的最大的MPDU长度(假设为3895Bytes)，则反馈方将反馈报告进行分段。
其中分段的个数N为保证
Figure PCTCN2016081904-appb-000001
的整数，即N≥2，N的取值可以通 过预定义的规则取可能的最小值，也可以取可能的最大值，例如协议预定义支持的最大分段数为8，则可以假设默认分段数取8，本实施中假设N取最小值2。
AP交叉选取待反馈的子载波的信道信息填充到确定的2个反馈报告分段帧中，将报告分段帧聚合并发送给信道探测方，这里可以认为子载波组只包含一个子载波，二者在本实施中等价。具体的：
将第0、2、4…..934个数据子载波的信道信息填充到第一个分段，将剩余的数据子载波的信道信道填充到第二个分段，即将第i个数据子载波的信道信息填充到第(i mod 2)+1个分段帧中i＝0,1,2…,935。如图14所示，图14是根据本发明实施例的交叉选取子载波填充分段帧的示意图。
将两个分段帧所在的MPDU聚合为一个A-MPDU，并在一个无线帧中发送给STA1。
STA1接收上述包含多个反馈信息分段帧的无线帧，假设只有分段帧1接收正确，分段2受到干扰发生错误。STA1根据反馈报告分段帧1中指示的分段总数，反馈的信道信息的维度(和天线配置有关)，反馈的精度，本分段的序号等信息，得知正确收到了0、2、4…..934号子载波的反馈，其他的发生了错误。根据信道的相干带宽特性，认为相邻子载波之间具有很强的相关性，则STA1根据接收正确的反馈报告分段帧估计整个信道，具体的，根据子载波0和2的信道信息估计子载波1的信息，根据2和4的信息估计3号子载波，依次类推。另外，在估计子载波1的时候，0号和2号子载波与1号子载波的间隔相同，估计时其权值相同。估计时，使用的算法可以是目前一直的多种线性插值或非线性插值算法。
这样STA1就不用发送反馈报告轮询帧给AP，要求AP重传反馈报告分段帧2，节省了传输开销。
实施例二
AP想要发送数据给自己关联的STA1，STA2，为了获得更可靠的传输，AP进行信道测量过程，此时AP为信道探测方，STA1和STA2为信道反馈方，过程包括：
AP发送信道探测通知帧，其中包括STA1和STA2的标识及其测量参数，告知STA1和STA2要进行信道测量，并在通知帧后发送探测信号NDP，STA1和STA2接收到通知帧并检测其后的NDP，测量估计信道状态，并生成测量报告，STA1和STA2顺序反馈信道测量报告，假设STA1在NDP后立即反馈，STA2等待收到AP的轮询后再反馈。假设AP要求测量的带宽为80MHz，包括了1024个子载波，其中用于传输数据的子载波需要反馈测量报告(假设为936个数据子载波，即M＝936)，而保护子载波，导频子载波，直流子载波等不需要反馈测量报告，假设天线配置为4×4，则每个子载波的反馈报告长度为60bits(低精度的为36bits)。由于要反馈测量报告较大7020Bytes，超过了站点支持的最大的MPDU长度(假设为3895Bytes)，则反馈方需要将反馈报告进行分段。且其中分段的个数N为保证
Figure PCTCN2016081904-appb-000002
的整数，即N≥2。AP可以指定或推荐M和N的值给站点，这里假设AP指定STA1的参数为N＝2，M＝468，M＝468是指AP希望STA1发送时就把子载波分组，两个一组，分组反馈一个子载波的信息，例如0和1是一组，只反馈1号子载波的信息，0号的不反馈，依次类推，要反馈的子载波信道信息的编号为1，3，…，935。STA2的参数未指示，STA2按照默认自己选择，假设STA2选择N＝4,M＝936。
STA1交叉选取待反馈的468子载波的信道信息填充到确定的2个反馈报告分段帧中，将报告分段帧聚合并发送给信道探测方。包括：
假设按照先后顺序确定这M＝468个子载波组的编号i，将第i个数据子载波组的信道信息填充到第(i mod 2)+1个分段帧中，i＝0,1,2…,467。每个子载波组只反馈一个子载波的信道信息，具体的对应原始的子载波编号，此时将第1,5,9，…，933号子载波的信息放入第一个分段，剩余的放入第二个分段帧中。
每个分段帧中都指示了自己的分段号，总分段数，STA1将反馈报告的总子载波分组并选取一个反馈的情况等信息。
将两个分段帧所在的MPDU聚合为一个A-MPDU，并在一个无线帧中发送给AP。
STA2等待AP的轮询发送探测报告，和STA1类似，交叉选取936个子载波放入4个反馈报告分段帧中，并聚合后发送给AP。
AP接收上述STA1发送的包含多个反馈报告分段帧的无线帧，假设全部正确。
然后AP发送轮询帧要求STA2反馈报告并接收STA2发送的多个反馈报告分段帧，假设4个分段帧中只有2号分段帧接收正确，其他的发生了错误。根据信道的相干带宽特性，AP认为缺失的分段数太多，根据信道相干特性估计所有反馈报告的误差较大，超过了预设的门限T(假设T为至少一半的子载波)，则AP继续轮询STA2要求重新发送错误的分段帧，假设STA2重新发送了1,3,4号分段帧，且AP收对了其中的两个1和4，则AP认为缺失的部分可以进行估计，则AP使用收对的1,2,4号分段帧获取全部子载波的信道信息，而非要求STA2继续重传分段3。
信道探测方和信道反馈方可以灵活的选择M和N的值，只要满足基本的分段大小和数目不超过协议的限制，且信道探测方可以通过指示或建议控制信道反馈方反馈的数据量。另外，信道探测方可以根据接收正确的分段帧的数量判断是否需要重传错误的分段，平衡信道估计的精度和反馈开销。
实施例三
AP想要发送数据给自己关联的STA1，为了获得更可靠的传输，AP进行信道测量过程，此时AP为信道探测方，STA1为信道反馈方，具体的过程为：
AP发送信道探测通知帧，告知STA1要进行信道测量，并在通知帧后发送探测信号NDP，STA1接收到通知帧并检测其后的NDP，测量估计信道状态，并生成测量报告。假设AP要求测量的带宽为80MHz，包括了1024个子载波，其中用于传输数据的子载波需要反馈测量报告(假设为936个数据子载波，即M＝936)，而保护子载波，导频子载波，直流子载波等不需要反馈测量报告，假设天线配置为4×4，则每个子载波的反馈报告长度为60bits(低精度的为36bits)。由于要反馈测量报告较大7020Bytes，超过了站点支持的最大的MPDU长度(假设为3895Bytes)，则反馈方需要将反馈报告进行分段，假设STA1选择的分段数为4，即N＝4。STA1发送探测报告时就把子载波进行分组，两个一组，例如0和1是一组，且分组内的两个子载波的信道信息都要反馈，依次类推，总共468个分组，即M＝468。
STA1交叉选取待反馈的468子载波组的信道信息填充到确定的4个反 馈报告分段帧中，将报告分段帧聚合并发送给信道探测方。具体的：
按照先后顺序确定这M＝468个子载波组的编号i，将第i个数据子载波组的信道信息填充到第(i mod 4)+1个分段帧中,i＝0,1,2…,467。每个数据子载波组的信道信息包含两个子载波的信道信息。
每个分段帧中都指示了自己的分段号，总分段数，STA1将反馈报告的总子载波分组并选取一个反馈的情况等信息。
将4个分段帧所在的MPDU聚合为一个A-MPDU，并在一个无线帧中发送给AP。
AP接收上述STA1发送的包含多个反馈报告分段帧的无线帧，根据接收的正确的分段帧的数量选择触发STA1重传或者根据接收正确的分段帧获取全部的信道信息。
实施例四
AP想要发送数据给自己关联的STA1，为了获得更可靠的传输，AP进行信道测量过程，此时AP为信道探测方，STA1为信道反馈方，过程包括：
AP发送信道探测通知帧，告知STA1要进行信道测量，并在通知帧后发送探测信号NDP，STA1接收到通知帧并检测其后的NDP，测量估计信道状态，并生成测量报告。假设AP要求测量的带宽为80MHz，包括了1024个子载波，其中用于传输数据的子载波需要反馈测量报告(假设为936个数据子载波，即M＝936)，而保护子载波，导频子载波，直流子载波等不需要反馈测量报告，探测报告较长，反馈方需要将反馈报告进行分段以保证传输质量避免全部错误，假设STA1选择的分段数为4，即N＝4。STA1发送探测报告时就把子载波进行分组，两个一组，例如0和1是一组，STA1将0和1的子载波信道信息合成为一个子载波信道信息，例如将两个子载波的信道信息取平均值，依次类推，总共468个分组，即M＝468，每组要反馈的信道信息为组内两个子载波信道信息的平均值。
STA1交叉选取待反馈的468子载波组的信道信息填充到确定的4个反馈报告分段帧中，将报告分段帧聚合并发送给信道探测方。包括：
按照先后顺序确定这M＝468个子载波组的编号i，将第i个数据子载波组的信道信息填充到第(i mod 4)+1个分段帧中，i＝0,1,2…,467。要反馈的信道信息为组内两个子载波信道信息的平均值。
每个分段帧中都指示了自己的分段号，总分段数，STA1将反馈报告的总子载波分组并选取一个反馈的情况等信息。
将4个分段帧所在的MPDU聚合为一个A-MPDU，并在一个无线帧中发送给AP。
AP接收上述STA1发送的包含多个反馈报告分段帧的无线帧，根据接收的正确的分段帧的数量选择触发STA1重传或者根据接收正确的分段帧获取全部的信道信息。
实施例五
信道探测方发送信道探测通知帧时，可以指定或建议M和N的值，另外可以指示M个子载波组的信道信息的带宽或频段。包括：
AP作为信道探测方，要求STA1、STA2进行信道探测，假设AP要探测的带宽为80MHz，但是AP不希望STA1和STA2都反馈80MHz的信道信息，则AP在信道探测通知帧或其他发送给STA1/STA2的帧中指示，STA1只反馈80MHz信道中的上40MHz的信道信息，STA2只反馈下40MHz的信道信息。即AP发送80MHz的测量信号NDP，但分别指示信道反馈方要反馈的带宽可以比80MHz小，可以让信道反馈方只反馈部分带宽或频段的信道探测报告。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，接收信道反馈站点发送的N个分段帧，其中，该N个分段帧中共填充有M个待反馈的子载波组的信道信息，M个待反馈的子载波组的信道信 息是被交叉填充至N个分段帧中的，该M为大于1的整数，N为大于或等于1的整数，子载波组中包括一个或多个子载波；
S2，获取N个分段帧中填充的M个待反馈的子载波组的信道信息。
可选地，存储介质还被设置为存储用于执行以下步骤的程序代码：
S1，将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中，其中，该M为大于1的整数，N为大于或等于1的整数，子载波组中包括一个或多个子载波；
S2，将N个分段帧发送给信道探测站点。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
在本发明实施例中，通过对信道探测报告进行交叉选取分段，可以在某些分段丢失的情况下，不需要重传就能获取整个信道探测报告，减少了信道反馈过程的开销，提高了网络效率。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的可选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护 范围之内。
工业实用性
上述技术方案可减小网络重传分段的开销。

Claims (38)

  1. 一种信道信息获取方法，包括：
    接收信道反馈站点发送的N个分段帧，其中，所述N个分段帧中共填充有M个待反馈的子载波组的信道信息，所述M个待反馈的子载波组的信道信息是被交叉填充至所述N个分段帧中的，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；
    获取所述N个分段帧中填充的所述M个待反馈的子载波组的信道信息。
  2. 根据权利要求1所述的方法，其中，获取所述N个分段帧中填充的所述M个待反馈的子载波组的信道信息包括：
    确定正确接收的分段帧；
    利用所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
  3. 根据权利要求2所述的方法，其中，利用所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息包括：
    利用与未正确接收的分段帧对应的子载波组相邻的子载波组估计所述未正确接收的分段帧对应的子载波组的信道信息，其中，所述未正确接收的分段帧对应的子载波组为所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组，所述相邻的子载波组为被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组；
    根据估计的所述未正确接收的分段帧中填充的子载波组的信道信息和所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
  4. 根据权利要求3所述的方法，其中，在估计所述未正确接收的分段帧中填充的子载波组的信道信息时，所利用的被正确接收的分段帧中填充的子载波组的信道信息的权重与正确接收的子载波组编号和未被正确接收的子载波组编号的距离成反比，其中，所述正确接收的子载波组编号是所述所利用的被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号，所述未被正确接收的子载波组编号是所述未正确接收的分段帧中填充的 子载波组的信道信息对应的子载波组的编号。
  5. 根据权利要求2所述的方法，还包括：
    在确定正确接收的分段帧之后，
    当所述正确接收的分段帧的个数小于或者等于门限值时，向所述信道反馈站点发送用于请求所述信道反馈站点重传未正确接收的分段帧的信道报告轮询帧。
  6. 根据权利要求1所述的方法，还包括：在接收信道反馈站点发送的N个分段帧之前，
    向所述信道反馈站点发送用于探测所述待反馈的子载波组的信道信息的探测信号，其中，所述探测信号用于所述信道反馈站点获取L个子载波组的信道信息，所述L为大于1的整数，所述L大于或等于所述M。
  7. 根据权利要求1所述的方法，还包括：在接收信道反馈站点发送的N个分段帧之前，
    向所述信道反馈站点发送用于指示所述N和/或所述M的取值的指示消息。
  8. 根据权利要求7所述的方法，其中，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
  9. 根据权利要求1所述的方法，其中，所述子载波组的信道信息包括以下至少之一：
    所述子载波组中一个子载波的信道信息；
    所述子载波组中多个子载波的信道信息；
    所述子载波组中多个子载波的信道信息所合成的信道信息。
  10. 根据权利要求1所述的方法，其中，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：
    分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
  11. 一种信道信息发送方法，包括：
    将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中，其中，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；
    将所述N个分段帧发送给信道探测站点。
  12. 根据权利要求11所述的方法，还包括：
    在将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中之前，
    接收所述信道探测站点发送的用于探测所述待反馈的子载波组的信道信息的探测信号；
    根据所述探测信号获取L个子载波组的信道信息，其中，所述L为大于1的整数，所述L大于或等于所述M。
  13. 根据权利要求11所述的方法，还包括：
    在将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中之前，
    接收所述信道探测站点发送的用于指示所述M和/或所述N的取值的指示消息。
  14. 根据权利要求13所述的方法，其中，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
  15. 根据权利要求11所述的方法，其中，所述子载波组的信道信息包括以下至少之一：
    所述子载波组中一个子载波的信道信息；
    所述子载波组中多个子载波的信道信息；
    所述子载波组中多个子载波的信道信息所合成的信道信息。
  16. 根据权利要求11所述的方法，其中，所述N个分段帧中的每个分段帧中填充的子载波组的信道信息的长度小于或等于所述信道探测站点支持的最大数据单元块长度。
  17. 根据权利要求11所述的方法，其中，将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中包括：
    将所述M个待反馈的子载波组中的第i个子载波组的信道信息填充至所 述N个分段帧中的第(i mod N)+1个分段帧中，其中，i mod N为i除以N的余数，所述i＝0,1,2,3,…,M-1。
  18. 根据权利要求11所述的方法，其中，将所述N个分段帧发送给信道探测站点包括：
    将所述N个分段帧封装为N个媒体接入控制层协议数据单元MPDU；
    将所述N个MPDU聚合为一个聚合媒体接入控制协议数据单元A-MPDU；
    将所述A-MPDU发送给所述信道探测站点。
  19. 根据权利要求11所述的方法，其中，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：
    分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
  20. 一种信道信息获取装置，包括：
    第一接收模块，设置为接收信道反馈站点发送的N个分段帧，其中，所述N个分段帧中共填充有M个待反馈的子载波组的信道信息，所述M个待反馈的子载波组的信道信息是被交叉填充至所述N个分段帧中的，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；
    第一获取模块，设置为获取所述N个分段帧中填充的所述M个待反馈的子载波组的信道信息。
  21. 根据权利要求20所述的装置，其中，所述第一获取模块包括：
    第一确定单元，设置为确定正确接收的分段帧；
    第二确定单元，设置为利用所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
  22. 根据权利要求21所述的装置，其中，所述第二确定单元是设置为：
    利用与未正确接收的分段帧对应的子载波组相邻的子载波组估计所述未正确接收的分段帧对应的子载波组的信道信息，其中，所述未正确接收的分 段帧对应的子载波组为所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组，所述相邻的子载波组为被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组；
    根据估计的所述未正确接收的分段帧中填充的子载波组的信道信息和所述正确接收的分段帧中填充的子载波组的信道信息确定所述M个待反馈的子载波组的信道信息。
  23. 根据权利要求22所述的装置，其中，在估计所述未正确接收的分段帧中填充的子载波组的信道信息时，所利用的被正确接收的分段帧中填充的子载波组的信道信息的权重与正确接收的子载波组编号和未被正确接收的子载波组编号的距离成反比，其中，所述正确接收的子载波组编号是所述所利用的被正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号，所述未被正确接收的子载波组编号是所述未正确接收的分段帧中填充的子载波组的信道信息对应的子载波组的编号。
  24. 根据权利要求21所述的装置，还包括：
    第一发送单元，设置为当所述正确接收的分段帧的个数小于或等于门限值时，向所述信道反馈站点发送用于请求所述信道反馈站点重传未正确接收的分段帧的信道报告轮询帧。
  25. 根据权利要求20所述的装置，还包括：
    第一发送模块，设置为向所述信道反馈站点发送用于探测所述待反馈的子载波组的信道信息的探测信号，其中，所述探测信号用于所述信道反馈站点获取L个子载波组的信道信息，所述L为大于1的整数，所述L大于或等于所述M。
  26. 根据权利要求20所述的装置，还包括：
    第二发送模块，设置为向所述信道反馈站点发送用于指示所述N和/或所述M的取值的指示消息。
  27. 根据权利要求26所述的装置，其中，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
  28. 根据权利要求20所述的装置，其中，所述子载波组的信道信息包括 以下至少之一：
    所述子载波组中一个子载波的信道信息；
    所述子载波组中多个子载波的信道信息；
    所述子载波组中多个子载波的信道信息所合成的信道信息。
  29. 根据权利要求20所述的装置，其中，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：
    分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
  30. 一种信道信息发送装置，包括：
    填充模块，设置为将M个待反馈的子载波组的信道信息交叉填充至N个分段帧中，其中，所述M为大于1的整数，所述N为大于或等于1的整数，所述子载波组中包括一个或多个子载波；
    第三发送模块，设置为将所述N个分段帧发送给信道探测站点。
  31. 根据权利要求30所述的装置，还包括：
    第二接收模块，设置为接收所述信道探测站点发送的用于探测所述待反馈的子载波组的信道信息的探测信号；
    第二获取模块，设置为根据所述探测信号获取L个子载波组的信道信息，其中，所述L为大于1的整数，所述L大于或等于所述M。
  32. 根据权利要求30所述的装置，还包括：
    第三接收模块，设置为接收所述信道探测站点发送的用于指示所述M和/或所述N的取值的指示消息。
  33. 根据权利要求32所述的装置，其中，用于指示所述M的取值的所述指示消息中包含要求的信道信息的带宽及频段的指示信息。
  34. 根据权利要求30所述的装置，其中，所述子载波组的信道信息包括以下至少之一：
    所述子载波组中一个子载波的信道信息；
    所述子载波组中多个子载波的信道信息；
    所述子载波组中多个子载波的信道信息所合成的信道信息。
  35. 根据权利要求30所述的装置，其中，所述N个分段帧中的每个分段帧中填充的子载波组的信道信息的长度小于或等于所述信道探测站点支持的最大数据单元块长度。
  36. 根据权利要求30所述的装置，其中，所述填充模块是设置为：
    将所述M个待反馈的子载波组中的第i个子载波组的信道信息填充至所述N个分段帧中的第(i mod N)+1个分段帧中，其中，i mod N为i除以N的余数，所述i＝0,1,2,3,…,M-1。
  37. 根据权利要求30所述的装置，其中，所述第三发送模块包括：
    封装单元，设置为将所述N个分段帧封装为N个媒体接入控制层协议数据单元MPDU；
    聚合单元，设置为将所述N个MPDU聚合为一个聚合媒体接入控制协议数据单元A-MPDU；
    第二发送单元，设置为将所述A-MPDU发送给所述信道探测站点。
  38. 根据权利要求30所述的装置，其中，所述N个分段帧中的每个分段帧中均包含以下信息至少之一：
    分段号信息、用于指示是否为起始分段的指示信息、信道数据维度指示信息、分段数目信息、测量的带宽信息、信道信噪比信息、分组信息。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101150553A (zh) * 2006-09-19 2008-03-26 中兴通讯股份有限公司 一种基于正交频分复用系统的资源块分配方法
CN101656601A (zh) * 2006-06-20 2010-02-24 华为技术有限公司 通信系统中反馈信息的方法、单元和处理器
CN101771444A (zh) * 2009-01-06 2010-07-07 大唐移动通信设备有限公司 多天线系统中参考信号的设置方法和基站
US20130223359A1 (en) * 2012-02-27 2013-08-29 Thomas Kenney Channel estimation and tracking

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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CN102238112B (zh) * 2010-04-23 2015-05-13 中兴通讯股份有限公司 基于探测信号的信道响应估计方法及装置
KR101099345B1 (ko) * 2010-12-01 2011-12-26 엘지전자 주식회사 무선랜 시스템에서 채널 사운딩 방법 및 장치
CN102761399B (zh) * 2011-04-27 2017-06-06 中兴通讯股份有限公司 一种信道反馈信息的传输方法和系统
EP2774277A4 (en) * 2011-11-04 2015-07-22 Intel Corp SIGNALING FOR THE CONFIGURATION OF COORDINATED DOWNLINK MULTIPORT COMMUNICATIONS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101656601A (zh) * 2006-06-20 2010-02-24 华为技术有限公司 通信系统中反馈信息的方法、单元和处理器
CN101150553A (zh) * 2006-09-19 2008-03-26 中兴通讯股份有限公司 一种基于正交频分复用系统的资源块分配方法
CN101771444A (zh) * 2009-01-06 2010-07-07 大唐移动通信设备有限公司 多天线系统中参考信号的设置方法和基站
US20130223359A1 (en) * 2012-02-27 2013-08-29 Thomas Kenney Channel estimation and tracking

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