CN106302271A

CN106302271A - Channel information acquisition method, sending method, acquisition device and dispensing device

Info

Publication number: CN106302271A
Application number: CN201510308644.1A
Authority: CN
Inventors: 邢卫民; 田开波; 孙波
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-06-05
Filing date: 2015-06-05
Publication date: 2017-01-04
Also published as: WO2016192520A1

Abstract

The invention provides a kind of channel information acquisition method, sending method, acquisition device and dispensing device, wherein, this channel information acquisition method includes: receive N number of fragmented frame that channel feedback website sends, wherein, this N number of fragmented frame is filled with the channel information of M subcarrier group to be feedback altogether, the channel information of M subcarrier group to be feedback is intersected in filling extremely N number of fragmented frame, this M is the integer more than 1, N is the integer more than or equal to 1, and subcarrier group includes one or more subcarrier；Obtain the channel information of M the subcarrier group to be feedback filled in N number of fragmented frame.By the present invention, provide possibility for solving the problem that the expense of network retransmission segmentation is big present in correlation technique.

Description

Channel information acquisition method, sending method, acquisition device and dispensing device

Technical field

The present invention relates to the communications field, in particular to a kind of channel information acquisition method, sending method, acquisition device and Dispensing device.

Background technology

At present, in field of wireless, WLAN (Wireless Local, referred to as WLAN) is fast-developing, such as, 802.11a/g uses OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM) to pass Transferring technology, and 802.11n introduce multiple-input and multiple-output (Multiple Input Multiple Output, referred to as MIMO) and Beamforming technique, from this, OFDM and MIMO is inherited by the standard of 802.11 as a basic technology, next The wlan standard in generation, all can use OFDM and MIMO skill including 802.11aj (45GHz), 802.11ax, 802.11ay Art.

In WLAN, an access point website (access point, referred to as AP) and associated plurality of with this AP non-connect Access point website (non-AP Station, referred to as non-AP STA) constitute a Basic Service Set (Basic Service Set, Referred to as BSS), as it is shown in figure 1, Fig. 1 is the WLAN Basic Service Set schematic diagram in correlation technique.When being wirelessly transferred, Sender is it is to be understood that current radio channel state, and sender obtains process referred to as detection (sounding) process of channel status, Concrete includes that channel detection side (beamformer) sends measurement signal, and channel feedback side (beamformee) measures above-mentioned signal, Measure the detection report of all subcarriers in estimating communication bandwidth and this report is fed back to Beamformer.So sender is just The report that can use acquisition adjusts and sends parameter to obtain the transmission result wanted.Correlation technique is in order to improve detection report Efficiency of transmission employs media and gets involved control (Media Access Control, referred to as MAC) layer fragmentation technique, and Fig. 2 is phase Detection report transmission schematic diagram in the technology of pass, as in figure 2 it is shown, detection side sends notification frame, informs feedback side's channel to be carried out Measure, and after notification frame, send detectable signal, feedback side's detection detectable signal, measure and estimate channel status, and generate measurement Report, owing to measurement report has been larger than the individual data cell block greatest length supported, feedback side is according to fixed in correlation technique Feedback report is carried out segmentation by the rule of justice, and wherein in addition to last segmentation, all segmentations are all fixed sizes, and are equal to The data block greatest length supported.Above-mentioned segmentation is carried out being polymerized and send jointly to detection side by feedback side, it is assumed that send for the first time During, segmentation 2 is interfered reception mistake, then detection side sends feedback report poll frame to feedback side, it is desirable to re-transmission segmentation 2, And indicate other segmentations to need not retransmit.Thus avoiding makes mistakes every time just retransmits whole measurement report.But detection side to obtain Take segmentation 2 and could obtain complete channel information, if above-mentioned retransmission processes is necessary so any one segmentation makes mistakes.

From said process it can be seen that data volume when fragmentation technique correlation technique is only the reduction of re-transmission, but sender is still So to have correctly received all of segment information and can obtain channel information, cause the problem that the expense of network retransmission segmentation is big.

For the problem that the expense of network retransmission segmentation present in correlation technique is big, effective solution is the most not yet proposed.

Summary of the invention

The invention provides a kind of channel information acquisition method, sending method, acquisition device and dispensing device, for solving relevant skill The problem that present in art, the expense of network retransmission segmentation is big provides possibility.

According to an aspect of the invention, it is provided a kind of channel information acquisition method, including: receive channel feedback website and send N number of fragmented frame, wherein, described N number of fragmented frame is filled with the channel information of subcarrier group to be feedback for M altogether, described The channel information of M subcarrier group to be feedback is intersected in filling extremely described N number of fragmented frame, and described M is more than 1 Integer, described N is the integer more than or equal to 1, and described subcarrier group includes one or more subcarrier；Obtain described N The channel information of described M the subcarrier group to be feedback filled in individual fragmented frame.

Alternatively, the channel information obtaining described M the subcarrier group to be feedback filled in described N number of fragmented frame includes: really Surely the fragmented frame being properly received；The channel information of the subcarrier group filled in the fragmented frame being properly received described in utilization determines described M The channel information of individual subcarrier group to be feedback.

Alternatively, the channel information of the subcarrier group filled in the fragmented frame being properly received described in utilization determines that described M is individual to be feedback The channel information of subcarrier group include: the subcarrier group utilizing the subcarrier group corresponding with the fragmented frame not being properly received adjacent is estimated The channel information of the subcarrier group that the fragmented frame that is not properly received described in meter is corresponding, wherein, the described fragmented frame pair not being properly received The subcarrier group answered be described in subcarrier group corresponding to the channel information of subcarrier group filled in the fragmented frame that is not properly received, institute Stating adjacent subcarrier group is the subcarrier group that in the fragmented frame being correctly received, the channel information of the subcarrier group of filling is corresponding；Root In the channel information of the subcarrier group filled in the described fragmented frame not being properly received according to estimates and the described fragmented frame being properly received The channel information of the subcarrier group filled determines the channel information of described M subcarrier group to be feedback.

Alternatively, during the channel information of the subcarrier group filled in the fragmented frame that is not properly received described in estimating, the quilt utilized Weight and the subcarrier group # being properly received of the channel information of the subcarrier group filled in the fragmented frame being properly received and not by just The distance of the subcarrier group # really received is inversely proportional to, wherein, described in the subcarrier group # that is properly received be described utilization The numbering of the subcarrier group that the channel information of subcarrier group filled in the fragmented frame being correctly received is corresponding, described is not correctly connect The subcarrier group # received is the subcarrier group that in the described fragmented frame not being properly received, the channel information of the subcarrier group of filling is corresponding Numbering.

Alternatively, after determining the fragmented frame being properly received, also include: when the number of the described fragmented frame being properly received is less than Or during equal to threshold value, send for asking the re-transmission of described channel feedback website not to be properly received to described channel feedback website The channel reporting poll frame of fragmented frame.

Alternatively, before receiving N number of fragmented frame that channel feedback website sends, also include: send out to described channel feedback website Sending the detectable signal of channel information for detecting described subcarrier group to be feedback, wherein, described detectable signal is used for described letter The channel information of the road feedback sub-carrier wave set of station for acquiring L, described L is the integer more than 1, and described L is more than or equal to described M。

Alternatively, before receiving N number of fragmented frame that channel feedback website sends, also include: send out to described channel feedback website Send the instruction message of value for indicating described N and/or described M.

Alternatively, for indicating the bandwidth of the channel information comprising requirement in the described instruction message of the value of described M and frequency range Instruction information.

Alternatively, the channel information of described subcarrier group includes at least one of: the letter of a subcarrier in described subcarrier group Road information；The channel information of multiple subcarriers in described subcarrier group；The channel information institute of multiple subcarriers in described subcarrier group The channel information of synthesis.

Alternatively, each fragmented frame in described N number of fragmented frame all comprises at least one following information: fragment number information, use In the bandwidth letter indicating whether the instruction information for starting segment, channel data dimension instruction information, division number information, measurement Breath, channel SNRs information, grouping information.

According to a further aspect in the invention, it is provided that a kind of channel information sending method, including: by M subcarrier to be feedback The channel information of group intersects fills in N number of fragmented frame, and wherein, described M is the integer more than 1, described N for more than or etc. In the integer of 1, described subcarrier group includes one or more subcarrier；Described N number of fragmented frame is sent to channel detection station Point.

Alternatively, before the channel information intersection of the subcarrier group to be feedback by M is filled to N number of fragmented frame, also include: Receive the detectable signal of the channel information for detecting described subcarrier group to be feedback that described channel detection website sends；According to Described detectable signal obtains the channel information of L sub-carrier wave set, and wherein, described L is the integer more than 1, described L more than or Equal to described M.

Alternatively, before the channel information intersection of the subcarrier group to be feedback by M is filled to N number of fragmented frame, also include: Receive the instruction message of the value for indicating described M and/or described N that described channel detection website sends.

Alternatively, in each fragmented frame in described N number of fragmented frame fill subcarrier group channel information length less than or etc. In the maximum data unit block length that described channel detection website is supported.

Alternatively, filling to the N number of fragmented frame that intersected by the channel information of M subcarrier group to be feedback includes: by described M The channel information of the i-th subcarrier group in individual subcarrier group to be feedback fills (the i mod N) to described N number of fragmented frame In+1 fragmented frame, wherein, i mod N is the i remainder divided by N, described i=0,1,2,3 ..., M-1.

Alternatively, described N number of fragmented frame is sent to channel detection website include: described N number of fragmented frame is encapsulated as N number of matchmaker Body access control layer protocol Data Unit MPDU；Described N number of MPDU is polymerized to an aggregated media access control protocol number According to unit A-MPDU；Described A-MPDU is sent to described channel detection website.

According to a further aspect in the invention, it is provided that a kind of channel information acquisition device, including: the first receiver module, it is used for connecing Receive N number of fragmented frame that channel feedback website sends, wherein, described N number of fragmented frame is filled with M subcarrier to be feedback altogether The channel information of group, the channel information of described M subcarrier group to be feedback is intersected in filling extremely described N number of fragmented frame, Described M is the integer more than 1, and described N is the integer more than or equal to 1, and described subcarrier group includes one or more son Carrier wave；First acquisition module, for obtaining the channel of described M the subcarrier group to be feedback filled in described N number of fragmented frame Information.

Alternatively, described first acquisition module includes: first determines unit, for determining the fragmented frame being properly received；Second is true Cell, the channel information of the subcarrier group filled in the fragmented frame being properly received described in utilizing determines that described M is individual to be feedback The channel information of subcarrier group.

Alternatively, described second determines that unit includes: utilize the son that the subcarrier group corresponding with the fragmented frame not being properly received is adjacent Carrier wave set estimate described in the channel information of subcarrier group corresponding to the fragmented frame that is not properly received, wherein, described be not properly received The subcarrier group that fragmented frame is corresponding be described in son load corresponding to the channel information of subcarrier group filled in the fragmented frame that is not properly received Ripple group, described adjacent subcarrier group is the son load that in the fragmented frame being correctly received, the channel information of the subcarrier group of filling is corresponding Ripple group；Channel information according to the subcarrier group filled in the fragmented frame that is not properly received described in estimating and described be properly received The channel information of the subcarrier group filled in fragmented frame determines the channel information of described M subcarrier group to be feedback.

Alternatively, described device also includes: the first transmitting element, for when described in the number of fragmented frame that is properly received less than or During equal to threshold value, send the segmentation not being properly received for asking described channel feedback website to retransmit to described channel feedback website The channel reporting poll frame of frame.

Alternatively, described device also includes: the first sending module, for send to described channel feedback website be used for detecting described The detectable signal of the channel information of subcarrier group to be feedback, wherein, described detectable signal is used for described channel feedback station for acquiring L The channel information of individual sub-carrier wave set, described L is the integer more than 1, and described L is more than or equal to described M.

Alternatively, described device also includes: the second sending module, is used for indicating described N for sending to described channel feedback website And/or the instruction message of the value of described M.

According to a further aspect in the invention, it is provided that a kind of channel information dispensing device, including: packing module, for by M The channel information of subcarrier group to be feedback intersects fills to N number of fragmented frame, and wherein, described M is the integer more than 1, institute Stating N is the integer more than or equal to 1, and described subcarrier group includes one or more subcarrier；3rd sending module, is used for Described N number of fragmented frame is sent to channel detection website.

Alternatively, described device also includes: the second receiver module, for receive described channel detection website send for detecting The detectable signal of the channel information of described subcarrier group to be feedback；Second acquisition module, for obtaining L according to described detectable signal The channel information of individual sub-carrier wave set, wherein, described L is the integer more than 1, and described L is more than or equal to described M.

Alternatively, described device also includes: the 3rd receiver module, for receive described channel detection website send for indicating The instruction message of the value of described M and/or described N.

Alternatively, described packing module includes: by the channel of the i-th subcarrier group in described M subcarrier group to be feedback Information is filled in (i mod N)+1 fragmented frame to described N number of fragmented frame, and wherein, i mod N is that i is divided by N's Remainder, described i=0,1,2,3 ..., M-1.

Alternatively, described 3rd sending module includes: encapsulation unit, connects for described N number of fragmented frame is encapsulated as N number of media Enter key-course protocol Data Unit MPDU；Polymerized unit, accesses for described N number of MPDU is polymerized to an aggregated media Control protocol data cell A-MPDU；Second transmitting element, for being sent to described channel detection website by described A-MPDU.

By the present invention, use and receive N number of fragmented frame that channel feedback website sends, wherein, described N number of fragmented frame is filled out altogether Being filled with the channel information of M subcarrier group to be feedback, the channel information of described M subcarrier group to be feedback is intersected to be filled out Being charged in described N number of fragmented frame, described M is the integer more than 1, and described N is the integer more than or equal to 1, described son Carrier wave set includes one or more subcarrier；Obtain described M the subcarrier group to be feedback filled in described N number of fragmented frame Channel information, thus provide possibility for solving the problem that the expense of network retransmission segmentation is big present in correlation technique.

Accompanying drawing explanation

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the present invention shows Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the WLAN Basic Service Set schematic diagram in correlation technique；

Fig. 2 is the detection report transmission schematic diagram in correlation technique；

Fig. 3 is the flow chart of channel information acquisition method according to embodiments of the present invention；

Fig. 4 is the flow chart of channel information sending method according to embodiments of the present invention；

Fig. 5 is the structured flowchart of channel information acquisition device according to embodiments of the present invention；

Fig. 6 is the structured flowchart of the first acquisition module 54 in channel information acquisition device according to embodiments of the present invention；

Fig. 7 is the preferred structure block diagram of the first acquisition module 54 in channel information acquisition device according to embodiments of the present invention；

Fig. 8 is channel information acquisition device preferred structure block diagram one according to embodiments of the present invention；

Fig. 9 is channel information acquisition device preferred structure block diagram two according to embodiments of the present invention；

Figure 10 is the structured flowchart of channel information dispensing device according to embodiments of the present invention；

Figure 11 is the preferred structure block diagram one of channel information dispensing device according to embodiments of the present invention；

Figure 12 is the preferred structure block diagram two of channel information dispensing device according to embodiments of the present invention；

Figure 13 is the preferred structure block diagram of the 3rd sending module 104 in channel information dispensing device according to embodiments of the present invention；

Figure 14 is the schematic diagram that intersection according to embodiments of the present invention chooses subcarrier filling fragmented frame.

Detailed description of the invention

Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that in the case of not conflicting, Embodiment in the application and the feature in embodiment can be mutually combined.

It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second " etc. are to use In the object that difference is similar, without being used for describing specific order or precedence.

Providing a kind of channel information acquisition method in the present embodiment, Fig. 3 is channel information acquisition according to embodiments of the present invention The flow chart of method, as it is shown in figure 1, this flow process comprises the steps:

Step S302, receives N number of fragmented frame that channel feedback website sends, wherein, is filled with M altogether in this N number of fragmented frame The channel information of individual subcarrier group to be feedback, the channel information of M subcarrier group to be feedback is intersected filling to N number of point In section frame, this M is the integer more than 1, and N is the integer more than or equal to 1, and subcarrier group includes one or more son Carrier wave；

Step S304, obtains the channel information of M the subcarrier group to be feedback filled in N number of fragmented frame.

Knowable to above-mentioned steps, the channel information of subcarrier group filled in the fragmented frame of reception is that sub-carrier group carries out intersection and fills out Fill, intersect fill mode also have multiple, can according to be spaced apart 1 intersection fill (that is, numbered 1,3,5,7 ... Subcarrier group channel population to fragmented frame in, numbered 2,4,6,8 ... the channel population to of subcarrier group In fragmented frame), or be spaced apart 2 cross-packet (that is, numbered 1,4,7,10 ... the channel population of subcarrier group to one In individual fragmented frame, numbered 2,5,8,11 ... subcarrier group channel population to fragmented frame in, numbered 3,6,9, 12 ... subcarrier group channel population to fragmented frame in), or other predetermined spaces intersect fill.Fill it addition, intersect Time the interval chosen should meet some requirements, such as its interval should be relevant to the coherence bandwidth of currently used wireless channel, institute Meaning coherence bandwidth refers to a certain specific frequency range, and any two frequency component in this frequency range all has the strongest phase Guan Xing.Further, it is possible to it is confirmed that be to there is predetermined contact between continuous print subcarrier group, say, that according to be estimated The channel information of the adjacent subcarrier group of subcarrier group is the channel information that can estimate this subcarrier to be estimated.Therefore, When receiving fragmented frame, even if failing to be properly received all of fragmented frame, it is also possible to the most just estimating according to the fragmented frame being properly received The fragmented frame really received, it is not necessary to channel feedback website retransmits the fragmented frame not being properly received, thus for solving in correlation technique The problem that the expense of the network retransmission segmentation existed is big provides possibility.

In an optional embodiment, obtain the channel information bag of M the subcarrier group to be feedback filled in N number of fragmented frame Include: determine the fragmented frame being properly received；The channel information utilizing the subcarrier group filled in this fragmented frame being properly received determines M The channel information of individual subcarrier group to be feedback.

Alternatively, the channel information of the subcarrier group filled in utilizing the fragmented frame being properly received determines M son load to be feedback During the channel information of ripple group, can adopt with the following method: utilize the subcarrier group corresponding with the fragmented frame not being properly received adjacent Subcarrier group estimate described in the channel information of subcarrier group corresponding to the fragmented frame that is not properly received, wherein, this is not properly received The subcarrier group that fragmented frame is corresponding be described in son load corresponding to the channel information of subcarrier group filled in the fragmented frame that is not properly received Ripple group, adjacent subcarrier group is the subcarrier group that in the fragmented frame being correctly received, the channel information of the subcarrier group of filling is corresponding； Channel information according to the subcarrier group filled in the fragmented frame not being properly received estimated and filling in the fragmented frame being properly received The channel information of subcarrier group determines the channel information of M subcarrier group to be feedback.It follows that in this embodiment it is that By utilizing the subcarrier that the subcarrier group in the fragmented frame not being correctly received is adjacent to estimate this fragmented frame not being correctly received In the channel information of subcarrier group, from without the most again transmitting this fragmented frame not being correctly received, decrease network Retransmit the expense of segmentation.

Alternatively, when the channel information of the subcarrier group estimating to fill in the above-mentioned fragmented frame not being properly received, the quilt utilized Weight and the subcarrier group # being properly received of the channel information of the subcarrier group filled in the fragmented frame being properly received and not by just The distance of the subcarrier group # really received is inversely proportional to, wherein, the subcarrier group # that this is properly received be utilized by correctly The numbering of the subcarrier group that the channel information of the subcarrier group of filling is corresponding in the fragmented frame received, the son load that this is not correctly received Ripple group # is the numbering of the subcarrier group that the channel information of the subcarrier group of filling is corresponding in the fragmented frame not being properly received.

In an optional embodiment, after determining the fragmented frame being properly received, also include: when the fragmented frame being properly received Number less than or equal to threshold value time, send to channel feedback website and be used for asking channel feedback website to retransmit not being properly received The channel reporting poll frame of fragmented frame.When the fragmented frame being properly received number less than or equal to threshold value time, illustrate only by This fragmented frame being correctly received cannot accurately estimate the channel information of the fragmented frame sub-carriers group not being correctly received, in order to Avoid causing bigger error, now need to ask channel feedback website to retransmit the fragmented frame not being properly received, and, in request When channel feedback website retransmits the fragmented frame not being properly received, channel feedback website can be asked to retransmit all of not being properly received Fragmented frame, it is also possible to the fragmented frame that request channel feedback website re-transmission part is not properly received, and, request number of times can also be Repeatedly, after once having asked, find, when the number of the fragmented frame being properly received also is less than or equal to threshold value, can ask Channel feedback website is asked to retransmit the fragmented frame not being properly received, until the number of the fragmented frame being properly received is more than threshold value.

In an optional embodiment, before receiving N number of fragmented frame that channel feedback website sends, also include: to this letter Road feedback website sends the detectable signal of the channel information for detecting subcarrier group to be feedback, and wherein, this detectable signal is used for The channel information of the sub-carrier wave set of channel feedback station for acquiring L, this L is the integer more than 1, and L is more than or equal to M.

In an optional embodiment, before receiving N number of fragmented frame that channel feedback website sends, also include: to this letter Road feedback website sends the instruction message of the value for indicating N and/or M.The value of N and/or M can also be by channel feedback Website determines oneself, or is determined by other websites.

In an optional embodiment, for indicate the channel information comprising requirement in the instruction message of the value of M bandwidth and The instruction information of frequency range.

In an optional embodiment, the channel information of above-mentioned subcarrier group includes at least one of: in subcarrier group one The channel information of subcarrier；The channel information of multiple subcarriers in subcarrier group；The channel information of multiple subcarriers in subcarrier group Synthesized channel information.Wherein, when the channel information of group carrier wave set includes the channel information of a subcarrier in subcarrier group, Subcarrier group can only include a subcarrier, it is also possible to includes multiple subcarrier, when group carrier wave set includes multiple subcarrier, A subcarrier in subcarrier group can make any one subcarrier in subcarrier group, it is also possible to is based on pre-defined rule and determines Subcarrier.

In an optional embodiment, each fragmented frame in above-mentioned N number of fragmented frame all comprises at least one following information: Fragment number information, be used to indicate whether the instruction information into starting segment, channel data dimension instruction information, division number information, The bandwidth information of measurement, channel SNRs information, grouping information.The above-mentioned information comprised in fragmented frame may be used for speculating and being somebody's turn to do The channel information of the subcarrier that subcarrier group that fragmented frame is corresponding is adjacent.

Fig. 4 is the flow chart of channel information sending method according to embodiments of the present invention, and as shown in Figure 4, this flow process includes as follows Step:

Step S402, intersects the channel information of M subcarrier group to be feedback and fills to N number of fragmented frame, wherein, and this M For the integer more than 1, N is the integer more than or equal to 1, and subcarrier group includes one or more subcarrier；

Step S404, is sent to channel detection website by N number of fragmented frame.

By above-mentioned steps, when being filled to fragmented frame by the channel information of subcarrier group, use the mode filled of intersecting, from And subcarrier group can be filled in fragmented frame in an orderly manner, the mode filled of intersecting also has multiple, can be according to being spaced apart 1 Intersect and fill (that is, numbered 1,3,5,7 ... subcarrier group channel population to fragmented frame in, numbered 2,4, 6,8 ... subcarrier group channel population to fragmented frame in), or be spaced apart 2 cross-packet (that is, numbered 1,4, 7,10 ... subcarrier group channel population to fragmented frame in, numbered 2,5,8,11 ... the channel of subcarrier group fill out Be charged in a fragmented frame, numbered 3,6,9,12 ... subcarrier group channel population to fragmented frame in), or its His predetermined space intersects fills.Should meet some requirements it addition, intersect the interval chosen when filling, such as its interval should with work as The coherence bandwidth of the wireless channel of front use is correlated with, and so-called coherence bandwidth refers to a certain specific frequency range, in this frequency range Interior any two frequency component all has the strongest dependency.Further, it is to there is predetermined contact between continuous print subcarrier group, That is it is to estimate this son load to be estimated according to the channel information of the adjacent subcarrier group of subcarrier group to be estimated The channel information of ripple.Therefore, according to above-mentioned packet mode, when channel detection website receives fragmented frame, even if just failing Really receive all of fragmented frame, it is also possible to the fragmented frame estimating according to the fragmented frame being properly received not to be properly received, it is not necessary to channel Feedback website retransmits the fragmented frame that is not properly received, thus big for solving the expense of network retransmission segmentation present in correlation technique Problem provide possibility.

In an optional embodiment, the channel information in the subcarrier group to be feedback by M intersects fills to N number of fragmented frame Before in, also include: receive the detection of the channel information for detecting subcarrier group to be feedback that this channel detection website sends Signal；Obtain the channel information of L sub-carrier wave set according to detectable signal, wherein, this L is the integer more than 1, L more than or Equal to M.

In an optional embodiment, the channel information in the subcarrier group to be feedback by M intersects fills to N number of fragmented frame Before in, also include: receive the instruction message of the value for indicating M and/or N that channel detection website sends.

Alternatively, for indicating the bandwidth of the channel information comprising requirement in the instruction message of the value of M and the instruction information of frequency range.

Alternatively, the channel information of above-mentioned subcarrier group includes at least one of: in subcarrier group, the channel of a subcarrier is believed Breath；The channel information of multiple subcarriers in subcarrier group；In subcarrier group, the channel synthesized by the channel information of multiple subcarriers is believed Breath.Wherein, when the channel information of group carrier wave set includes the channel information of a subcarrier in subcarrier group, subcarrier group is permissible Only include a subcarrier, it is also possible to include multiple subcarrier, when group carrier wave set includes multiple subcarrier, in subcarrier group One subcarrier can make any one subcarrier in subcarrier group, it is also possible to is based on the subcarrier that pre-defined rule determines.

Alternatively, in each fragmented frame in above-mentioned N number of fragmented frame fill subcarrier group channel information length less than or etc. In the maximum data unit block length that channel detection website is supported.

In an optional embodiment, the channel information of M subcarrier group to be feedback is intersected and fills to N number of fragmented frame Including: the channel information of the i-th subcarrier group in M subcarrier group to be feedback is filled the (i to N number of fragmented frame Mod N) in+1 fragmented frame, wherein, i mod N is the i remainder divided by N, this i=0,1,2,3 ..., M-1.

In an optional embodiment, N number of fragmented frame is sent to channel detection website and includes: N number of fragmented frame is encapsulated as N number of medium access control layer protocol data cell MPDU；This N number of MPDU is polymerized to an aggregated media Access Control association View data cell A-MPDU；A-MPDU is sent to channel detection website.

Alternatively, each fragmented frame in above-mentioned N number of fragmented frame all comprises at least one following information: fragment number information, use In the bandwidth letter indicating whether the instruction information for starting segment, channel data dimension instruction information, division number information, measurement Breath, channel SNRs information, grouping information.

Through the above description of the embodiments, those skilled in the art is it can be understood that arrive the side according to above-described embodiment Method can add the mode of required general hardware platform by software and realize, naturally it is also possible to by hardware, but a lot of in the case of before Person is more preferably embodiment.Based on such understanding, prior art is made tribute by technical scheme the most in other words The part offered can embody with the form of software product, this computer software product be stored in a storage medium (as ROM/RAM, magnetic disc, CD) in, including some instructions with so that a station terminal equipment (can be mobile phone, computer, Server, or the network equipment etc.) perform the method described in each embodiment of the present invention.

Additionally providing a kind of channel information acquisition device in the present embodiment, this device is used for realizing above-described embodiment and being preferable to carry out Mode, had carried out repeating no more of explanation.As used below, term " module " can realize the soft of predetermined function Part and/or the combination of hardware.Although the device described by following example preferably realizes with software, but hardware, or soft The realization of the combination of part and hardware also may and be contemplated.

Fig. 5 is the structured flowchart of channel information acquisition device according to embodiments of the present invention, as it is shown in figure 5, this device includes One receiver module 52 and the first acquisition module 54, illustrates this device below.

First receiver module 52, for receiving N number of fragmented frame that channel feedback website sends, wherein, in this N number of fragmented frame altogether Being filled with the channel information of M subcarrier group to be feedback, the channel information of this M subcarrier group to be feedback is intersected to be filled out Being charged in N number of fragmented frame, M is the integer more than 1, and N is the integer more than or equal to 1, and subcarrier group includes one Individual or multiple subcarriers；First acquisition module 54, is connected to above-mentioned first receiver module 52, is used for obtaining above-mentioned N number of fragmented frame The channel information of the M of middle filling subcarrier group to be feedback.

Fig. 6 is the structured flowchart of the first acquisition module 54 in channel information acquisition device according to embodiments of the present invention, such as Fig. 6 institute Showing, this first acquisition module 54 includes that first determines that unit 62 and second determines unit 64, below to this first acquisition module 54 Illustrate.

First determines unit 62, for determining the fragmented frame being properly received；Second determines unit 64, is connected to above-mentioned first and determines Unit 62, for utilizing the channel information of the subcarrier group filled in the fragmented frame being properly received to determine M subcarrier to be feedback The channel information of group.

Alternatively, above-mentioned second determines that unit 64 includes: utilize the subcarrier group corresponding with the fragmented frame not being properly received adjacent Subcarrier group estimate described in the channel information of subcarrier group corresponding to the fragmented frame that is not properly received, wherein, this is not properly received The subcarrier group that fragmented frame is corresponding be described in son load corresponding to the channel information of subcarrier group filled in the fragmented frame that is not properly received Ripple group, adjacent subcarrier group is the subcarrier group that in the fragmented frame being correctly received, the channel information of the subcarrier group of filling is corresponding； Channel information according to the subcarrier group filled in the fragmented frame not being properly received estimated and filling in the fragmented frame being properly received The channel information of subcarrier group determines the channel information of M subcarrier group to be feedback.

Alternatively, during the channel information of the subcarrier group filled in estimating the fragmented frame that is not properly received, utilized by correctly Weight and the subcarrier group # being properly received of the channel information of the subcarrier group filled in the fragmented frame received and correctly do not connect The distance of subcarrier group # received is inversely proportional to, and wherein, the subcarrier group # that this is properly received is being correctly received of being utilized Fragmented frame in the numbering of subcarrier group corresponding to the channel information of subcarrier group filled, the subcarrier group not being correctly received is compiled It number it is the numbering of the subcarrier group that the channel information of the subcarrier group filled in the fragmented frame not being properly received is corresponding.

Fig. 7 is the preferred structure block diagram of the first acquisition module 54 in channel information acquisition device according to embodiments of the present invention, such as figure Shown in 7, this first acquisition module 54, in addition to including all unit shown in Fig. 6, also includes the first transmitting element 72, below right This first acquisition module 54 illustrates.

First transmitting element 72, is connected to above-mentioned first and determines unit 62, for when the number of fragmented frame being properly received less than or During equal to threshold value, send for asking this channel feedback website to retransmit the letter of the fragmented frame not being properly received to channel feedback website Road report poll frame.

Fig. 8 is channel information acquisition device preferred structure block diagram one according to embodiments of the present invention, and as shown in Figure 8, this device removes Outside including all modules shown in Fig. 5, also include the first sending module 82, below this device is illustrated.

First sending module 82, is connected to above-mentioned first receiver module 52, treats instead for detection for sending to channel feedback website The detectable signal of the channel information of the subcarrier group of feedback, wherein, this detectable signal is used for channel feedback station for acquiring L subcarrier The channel information of group, L is the integer more than 1, and L is more than or equal to M.

Fig. 9 is channel information acquisition device preferred structure block diagram two according to embodiments of the present invention, as it is shown in figure 9, this device removes Outside including all modules shown in Fig. 5, also include the second sending module 92, below this device is illustrated.

Second sending module 92, is connected to above-mentioned first receiver module 52, for send to channel feedback website be used for indicating N and / or the instruction message of value of M.

Alternatively, the channel information of above-mentioned subcarrier group includes at least one of: in subcarrier group, the channel of a subcarrier is believed Breath；The channel information of multiple subcarriers in subcarrier group；In subcarrier group, the channel synthesized by the channel information of multiple subcarriers is believed Breath.

Figure 10 is the structured flowchart of channel information dispensing device according to embodiments of the present invention, and as shown in Figure 10, this device includes Packing module 102 and the 3rd sending module 104, illustrate this device below.

Packing module 102, the channel information for the subcarrier group to be feedback by M intersects fills to N number of fragmented frame, its In, this M is the integer more than 1, and N is the integer more than or equal to 1, and subcarrier group includes one or more subcarrier； 3rd sending module 104, is connected to above-mentioned packing module 102, for N number of fragmented frame is sent to channel detection website.

Figure 11 is the preferred structure block diagram one of channel information dispensing device according to embodiments of the present invention, as shown in figure 11, this device In addition to including all modules shown in Figure 10, also include the second receiver module 112 and the second acquisition module 114, below to this dress Put and illustrate.

Second receiver module 112, for receiving the channel information for detecting subcarrier group to be feedback that channel detection website sends Detectable signal；Second acquisition module 114, is connected to above-mentioned second receiver module 112 and packing module 102, for according to spy Surveying the channel information of signal acquisition L sub-carrier wave set, wherein, this L is the integer more than 1, and L is more than or equal to M.

Figure 12 is the preferred structure block diagram two of channel information dispensing device according to embodiments of the present invention, as shown in figure 12, this dress Put in addition to including all modules shown in Figure 10, also include the 3rd receiver module 122, below this device is illustrated.

3rd receiver module 122, is connected to above-mentioned packing module 102, for receive channel detection website send for indicating M And/or the instruction message of the value of N.

Alternatively, above-mentioned packing module 102 includes: by the channel of the i-th subcarrier group in M subcarrier group to be feedback Information is filled in (i mod N)+1 fragmented frame to N number of fragmented frame, and wherein, i mod N is the i remainder divided by N, I=0,1,2,3 ..., M-1.

Figure 13 is the preferred structure block diagram of the 3rd sending module 104 in channel information dispensing device according to embodiments of the present invention, as Shown in Figure 13, the 3rd sending module 104 includes encapsulation unit 132, polymerized unit 134 and the second transmitting element 136, under In the face of the 3rd sending module 104 illustrates.

Encapsulation unit 132, for being encapsulated as N number of medium access control layer protocol data cell MPDU by N number of fragmented frame；Poly- Close unit 134, be connected to above-mentioned encapsulation unit 132, for N number of MPDU being polymerized to an aggregated media Access Control association View data cell A-MPDU；Second transmitting element 136, is connected to above-mentioned polymerized unit 134, for being sent by A-MPDU To channel detection website.

By above-described embodiment, in the embodiment of the present invention, design is a kind of new segmentation (fragmented frame with above-mentioned) transmission Method, can obtain whole channel information on the premise of partial segments is lost and do not retransmitted, reduce network retransmission segmentation Expense, improves network efficiency further.

Below in conjunction with specific embodiment, the present invention is illustrated, it will be appreciated that preferred embodiment described herein is only used for The description and interpretation present invention, is not intended to limit the present invention.In the case of not conflicting, the embodiment in the application and embodiment In feature can be mutually combined.

Embodiment one

Site STA 1 wants to send data to access website AP of oneself association, and in order to obtain more reliable transmission, STA1 is carried out Channel measurement process, now STA1 is channel detection side, and AP is channel feedback side, and concrete process is:

STA1 sends channel detection notification frame, informs AP channel measurement to be carried out, and sends detectable signal NDP after notification frame, AP receives notification frame and detects NDP thereafter, measures and estimates channel status, and generates measurement report.Assume STA1 requirement The a width of 80MHz of band measured, includes 1024 subcarriers, and the subcarrier being wherein used for transmitting data needs to feed back measurement report (being assumed to be 936 data subcarriers, i.e. M=936), and protect subcarrier, pilot sub-carrier, direct current subcarrier etc. need not instead Feedback measurement report, it is assumed that antenna configurations is 4 × 4, a length of 60bits of feedback report of the most each subcarrier (low precision for 36bits). Due to the bigger 7020Bytes of measurement report to be fed back, exceed the maximum MPDU length (being assumed to be 3895Bytes) that website is supported, Then feedback report is carried out segmentation by feedback side.

Wherein number N of segmentation is for ensureingInteger, i.e. N >=2, the value of N can be by predefined Rule takes possible minima, it is also possible to taking possible maximum, such as agreement and predefining the maximum segment number of support is 8, then may be used To assume that default segment number takes hypothesis N in 8, this enforcement and takes minima 2.

AP intersection is chosen the channel information of subcarrier to be feedback and is filled in 2 the feedback report fragmented frames determined, by report point Section frame aggregation is also sent to channel detection side, and here it is believed that subcarrier group only comprises a subcarrier, the two is in this embodiment Of equal value.Concrete:

By the 0th, 2,4 ... the channel information of ..934 data subcarrier is filled into first segmentation, by remaining data subcarrier Channel channel population to second segmentation, the channel information of i-th data subcarrier will be filled into (i mod 2)+1 segmentation I=0,1,2 in frame ..., 935.As shown in figure 14, Figure 14 is that intersection according to embodiments of the present invention chooses subcarrier filling fragmented frame Schematic diagram.

The MPDU at two fragmented frame places is polymerized to an A-MPDU, and is sent to STA1 in a radio frame.

STA1 receives the above-mentioned radio frames comprising multiple feedback information fragmented frame, it is assumed that only fragmented frame 1 receives correctly, segmentation 2 It is interfered and makes a mistake.STA1 is according to the segmentation sum of instruction in feedback report fragmented frame 1, the dimension of the channel information of feedback (relevant with antenna configurations), the precision of feedback, the information such as sequence number of this segmentation, learn that correctly received 0,2,4 ... ..934 work song The feedback of carrier wave, other there occurs mistake.Coherence bandwidth characteristic according to channel, it is believed that have the strongest between adjacent sub-carrier Dependency, then STA1 estimates whole channel according to receiving correct feedback report fragmented frame, concrete, according to subcarrier 0 He The channel information of 2 estimates the information of subcarrier 1, estimates 3 sub carriers according to the information of 2 and 4, the like.It addition, The when of estimating subcarrier 1, No. 0 identical with the interval of 2 sub carriers and 1 sub carriers, and during estimation, its weights are identical.Estimate Time, the algorithm of use can be various linear interpolations the most always or non-linear interpolation algorithm.

So STA1 just need not send feedback report poll frame to AP, it is desirable to AP retransmission feedback report fragmented frame 2, saves biography Defeated expense.

Embodiment two

AP wants to send data to STA1, the STA2 of oneself association, and in order to obtain more reliable transmission, AP carries out channel measurement Process, now AP is channel detection side, STA1 and STA2 is channel feedback side, and concrete process is:

AP sends channel detection notification frame, including STA1 and STA2 mark and measure parameter, inform STA1 and STA2 channel measurement to be carried out, and transmission detectable signal NDP, STA1 and STA2 receive notification frame and examine after notification frame Survey NDP thereafter, measure and estimate channel status, and generate measurement report, STA1 and STA2 order feedback channel measurement report, Assuming that STA1 feeds back after NDP immediately, STA2 feeds back after waiting the poll receiving AP again.Assume that AP requires the band measured A width of 80MHz, includes 1024 subcarriers, and the subcarrier being wherein used for transmitting data needs feedback measurement report (to be assumed to be 936 data subcarriers, i.e. M=936), and protect subcarrier, pilot sub-carrier, direct current subcarrier etc. need not feedback and measures Report, it is assumed that antenna configurations is 4 × 4, a length of 60bits of feedback report of the most each subcarrier (low precision for 36bits).By In the bigger 7020Bytes of measurement report to be fed back, exceed the maximum MPDU length (being assumed to be 3895Bytes) that website is supported, Then feedback side needs feedback report is carried out segmentation.And number N of wherein segmentation is for ensureingInteger, i.e. N≥2.AP can specify or recommend the value of M and N to website, it is assumed here that AP specifies the parameter of STA1 to be N=2, M=468, M=468 refers to that AP wishes just subcarrier grouping when STA1 sends, two one group, the information of packet one subcarrier of feedback, Such as 0 and 1 is one group, only the information of feedback 1 sub carriers, No. 0 do not feed back, the like, subcarrier letter to be fed back Numbered the 1,3 of road information ..., 935.The parameter of STA2 does not indicates, and STA2 selects according to acquiescence oneself, it is assumed that STA2 Select N=4, M=936.

STA1 intersection is chosen the channel information of 468 subcarriers to be feedback and is filled in 2 the feedback report fragmented frames determined, will Report fragmented frame is polymerized and is sent to channel detection side.Concrete:

Assume to determine numbering i of this M=468 sub-carrier wave set according to sequencing, by the channel information of i-th data subcarrier group It is filled in (i mod 2)+1 fragmented frame, i=0,1,2 ..., 467.Each subcarrier group only feeds back the channel information of a subcarrier, The subcarrier number that specific corresponding to is original, now by the 1st, 5,9 ..., the information of 933 sub carriers puts into first segmentation, Remaining put in second fragmented frame.

Indicating the fragment number of oneself in each fragmented frame, total segments, STA1 is by total subcarrier grouping of feedback report and selects Take the information such as a situation about feeding back.

The MPDU at two fragmented frame places is polymerized to an A-MPDU, and is sent to AP in a radio frame.

The poll of STA2 wait AP sends detection report, similar with STA1, and intersection is chosen 936 subcarriers and put into 4 instead In feedback report fragmented frame, and it is sent to AP after polymerization.

AP receives the radio frames comprising multiple feedback report fragmented frame that above-mentioned STA1 sends, it is assumed that the most correct.

Then AP sends poll frame requirement STA2 feedback report and receives multiple feedback report fragmented frames that STA2 sends, it is assumed that In 4 fragmented frames, only No. 2 fragmented frames receive correct, other there occurs mistake.Coherence bandwidth characteristic according to channel, AP Think that the segments of disappearance is too many, estimate that according to channel coherence characteristics the error of all feedback reports is relatively big, exceeded the door preset Limit T (assuming that T is at least half of subcarrier), then AP continuation poll STA2 requires to resend the fragmented frame of mistake, it is assumed that STA2 has resend 1,3, No. 4 fragmented frames, and AP receives right two 1 and 4 therein, then AP thinks that the part of disappearance can To estimate, then AP use receive to 1,2, No. 4 fragmented frames obtain the channel information of whole subcarriers, and undesired STA2 Continue to retransmit segmentation 3.

Channel detection side and channel feedback side can select the value of M and N flexibly, as long as meeting basic fragment size and number Less than the restriction of agreement, and channel detection side can control the data volume of channel feedback side's feedback by instruction or suggestion.It addition, Channel detection side can judge whether to need the segmentation of retransmission error according to the quantity receiving correct fragmented frame, and stationary channel is estimated Precision and feedback overhead.

Embodiment three

AP wants to send data to the STA1 of oneself association, and in order to obtain more reliable transmission, AP carries out channel measurement process, Now AP is channel detection side, and STA1 is channel feedback side, and concrete process is:

AP sends channel detection notification frame, informs STA1 channel measurement to be carried out, and sends detectable signal NDP after notification frame, STA1 receives notification frame and detects NDP thereafter, measures and estimates channel status, and generates measurement report.Assume AP requirement The a width of 80MHz of band measured, includes 1024 subcarriers, and the subcarrier being wherein used for transmitting data needs to feed back measurement report (being assumed to be 936 data subcarriers, i.e. M=936), and protect subcarrier, pilot sub-carrier, direct current subcarrier etc. need not instead Feedback measurement report, it is assumed that antenna configurations is 4 × 4, a length of 60bits of feedback report of the most each subcarrier (low precision for 36bits). Due to the bigger 7020Bytes of measurement report to be fed back, exceed the maximum MPDU length (being assumed to be 3895Bytes) that website is supported, Then feedback side needs feedback report is carried out segmentation, it is assumed that the segments that STA1 selects is 4, i.e. N=4.STA1 sends detection Just subcarrier being grouped during report, two one group, such as 0 and 1 is one group, and the channel of two subcarriers in packet Information will be fed back, the like, 468 packets, i.e. M=468 altogether.

STA1 intersection is chosen the channel information of 468 subcarrier groups to be feedback and is filled in 4 the feedback report fragmented frames determined, Report fragmented frame is polymerized and is sent to channel detection side.Concrete:

Determine numbering i of this M=468 sub-carrier wave set according to sequencing, the channel information of i-th data subcarrier group is filled In (i mod 4)+1 fragmented frame, i=0,1,2 ..., 467.The channel information of each data subcarrier group comprises the letter of two subcarriers Road information.

The MPDU at 4 fragmented frame places is polymerized to an A-MPDU, and is sent to AP in a radio frame.

AP receives the radio frames comprising multiple feedback report fragmented frame that above-mentioned STA1 sends, according to the correct fragmented frame received Quantity select to trigger STA1 and retransmit or obtain whole channel informations according to receiving correct fragmented frame.

Embodiment four

AP sends channel detection notification frame, informs STA1 channel measurement to be carried out, and sends detectable signal NDP after notification frame, STA1 receives notification frame and detects NDP thereafter, measures and estimates channel status, and generates measurement report.Assume AP requirement The a width of 80MHz of band measured, includes 1024 subcarriers, and the subcarrier being wherein used for transmitting data needs to feed back measurement report (being assumed to be 936 data subcarriers, i.e. M=936), and protect subcarrier, pilot sub-carrier, direct current subcarrier etc. need not instead Feedback measurement report, detection report is longer, and feedback side needs that feedback report carries out segmentation and avoids whole mistake with guarantee transmission quality, Assume that the segments that STA1 selects is 4, i.e. N=4.STA1 is just grouped subcarrier when sending detection report, two one Group, such as 0 and 1 is one group, and the sub-carrier channels information of 0 and 1 is synthesized a sub-carrier channels information by STA1, such as The channel information of two subcarriers is averaged, the like, 468 packets altogether, i.e. M=468, often group is to be fed back Channel information is the meansigma methods organizing interior two sub-carrier channels information.

Determine numbering i of this M=468 sub-carrier wave set according to sequencing, the channel information of i-th data subcarrier group is filled In (i mod 4)+1 fragmented frame, i=0,1,2 ..., 467.Channel information to be fed back is to organize interior two sub-carrier channels information Meansigma methods.

Embodiment five

When channel detection side sends channel detection notification frame, it is possible to specify or the value of suggestion M and N, additionally may indicate that M The bandwidth of the channel information of subcarrier group or frequency range.Concrete:

AP is as channel detection side, it is desirable to STA1, STA2 carry out channel detection, it is assumed that a width of 80MHz of band to be detected for AP, But AP is not intended to STA1 and STA2 and feeds back the channel information of 80MHz, then AP channel detection notification frame or other Giving in the frame of STA1/STA2 and indicate, STA1 only feeds back the channel information of the upper 40MHz in 80MHz channel, and STA2 is only The channel information of the lower 40MHz of feedback.I.e. AP sends the measurement signal NDP of 80MHz, but indicates respectively that channel feedback side wants The bandwidth of feedback can be less than 80MHz, and the channel detection of channel feedback side feedback fraction bandwidth or frequency range can be allowed to report.

It should be noted that above-mentioned modules can be by software or hardware realizes, for the latter, can by with Under type realizes, but is not limited to this: above-mentioned module is respectively positioned in same processor；Or, above-mentioned module lays respectively at multiple place In reason device.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can be by It is set to storage for the program code performing following steps:

S1, receives N number of fragmented frame that channel feedback website sends, wherein, is filled with M altogether individual to be feedback in this N number of fragmented frame The channel information of subcarrier group, the channel information of M subcarrier group to be feedback is intersected filling in N number of fragmented frame, This M is the integer more than 1, and N is the integer more than or equal to 1, and subcarrier group includes one or more subcarrier；

S2, obtains the channel information of M the subcarrier group to be feedback filled in N number of fragmented frame.

Alternatively, storage medium is also configured to storage for the program code performing following steps:

S1, intersects the channel information of M subcarrier group to be feedback and fills to N number of fragmented frame, and wherein, this M is big In the integer of 1, N is the integer more than or equal to 1, and subcarrier group includes one or more subcarrier；

S2, is sent to channel detection website by N number of fragmented frame.

Alternatively, in the present embodiment, above-mentioned storage medium can include but not limited to: USB flash disk, read only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), mobile The various media that can store program code such as hard disk, magnetic disc or CD.

Alternatively, the concrete example in the present embodiment is referred to the example described in above-described embodiment and optional embodiment, The present embodiment does not repeats them here.

In embodiments of the present invention, choose segmentation by channel detection report is carried out intersection, can be in the feelings of some fragment loss Under condition, it is not necessary to retransmit and just can obtain the report of whole channel detection, decrease the expense of channel feedback procedure, improve network effect Rate.

Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general calculating Device realizes, and they can concentrate on single calculating device, or is distributed on the network that multiple calculating device is formed, Alternatively, they can realize with calculating the executable program code of device, it is thus possible to be stored in storing device In perform by calculating device, and in some cases, can with the order being different from herein perform shown or described by step Suddenly, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single Integrated circuit modules realizes.So, the present invention is not restricted to the combination of any specific hardware and software.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc. With replacement, improvement etc., should be included within the scope of the present invention.

Claims

1. a channel information acquisition method, it is characterised in that including:

Receive N number of fragmented frame that channel feedback website sends, wherein, described N number of fragmented frame is filled with M altogether The channel information of individual subcarrier group to be feedback, the channel information of described M subcarrier group to be feedback is handed over Fork is filled to described N number of fragmented frame, and described M is the integer more than 1, and described N is more than or equal to 1 Integer, described subcarrier group includes one or more subcarrier；

Obtain the channel information of described M the subcarrier group to be feedback filled in described N number of fragmented frame.

Method the most according to claim 1, it is characterised in that obtain the described M filled in described N number of fragmented frame The channel information of individual subcarrier group to be feedback includes:

Determine the fragmented frame being properly received；

The channel information of the subcarrier group filled in the fragmented frame being properly received described in utilization determines that described M is treated anti- The channel information of the subcarrier group of feedback.

Method the most according to claim 2, it is characterised in that the son filled in the fragmented frame being properly received described in utilization The channel information of carrier wave set determines that the channel information of described M subcarrier group to be feedback includes:

Utilize described in the subcarrier group estimation that the subcarrier group corresponding with the fragmented frame not being properly received is adjacent the most correct The channel information of subcarrier group corresponding to fragmented frame received, wherein, the described fragmented frame not being properly received is corresponding Subcarrier group be described in subcarrier corresponding to the channel information of subcarrier group filled in the fragmented frame that is not properly received Group, described adjacent subcarrier group is that the channel information of the subcarrier group filled in the fragmented frame being correctly received is corresponding Subcarrier group；

Channel information according to the subcarrier group filled in the fragmented frame that is not properly received described in estimating and described just The channel information of the subcarrier group filled in the fragmented frame really received determines described M subcarrier group to be feedback Channel information.

Method the most according to claim 3, it is characterised in that fill in the fragmented frame not being properly received described in estimating The channel information of subcarrier group time, the channel of the subcarrier group filled in the fragmented frame being correctly received utilized The weight of information becomes with the distance of the subcarrier group # being properly received and the subcarrier group # not being correctly received Inverse ratio, wherein, described in the subcarrier group # that is properly received be in described the utilized fragmented frame being correctly received The numbering of the subcarrier group that the channel information of subcarrier group filled is corresponding, the described subcarrier group not being correctly received Numbering is the subcarrier group that in the described fragmented frame not being properly received, the channel information of the subcarrier group of filling is corresponding Numbering.

Method the most according to claim 2, it is characterised in that after determining the fragmented frame being properly received, also include:

When the number of the described fragmented frame being properly received is less than or equal to threshold value, to described channel feedback website Send for asking described channel feedback website to retransmit the channel reporting poll frame of the fragmented frame not being properly received.

Method the most according to claim 1, it is characterised in that receiving N number of fragmented frame that channel feedback website sends Before, also include:

The detection being used for detecting the channel information of described subcarrier group to be feedback is sent to described channel feedback website Signal, wherein, described detectable signal is used for the channel information of the sub-carrier wave set of described channel feedback station for acquiring L, Described L is the integer more than 1, and described L is more than or equal to described M.

The instruction message being used for indicating the value of described N and/or described M is sent to described channel feedback website.

Method the most according to claim 7, it is characterised in that for indicating the described instruction of the value of described M to disappear Breath comprises the bandwidth of the channel information of requirement and the instruction information of frequency range.

Method the most according to claim 1, it is characterised in that the channel information of described subcarrier group include following at least One of:

The channel information of a subcarrier in described subcarrier group；

The channel information of multiple subcarriers in described subcarrier group；

The channel information synthesized by channel information of multiple subcarriers in described subcarrier group.

Method the most according to claim 1, it is characterised in that all wrap in each fragmented frame in described N number of fragmented frame Containing at least one following information:

Fragment number information, be used to indicate whether the instruction information into starting segment, channel data dimension instruction information, Division number information, the bandwidth information of measurement, channel SNRs information, grouping information.

11. 1 kinds of channel information sending methods, it is characterised in that including:

The channel information of M subcarrier group to be feedback is intersected and fills to N number of fragmented frame, wherein, described M is the integer more than 1, and described N is the integer more than or equal to 1, described subcarrier group include one or Multiple subcarriers；

Described N number of fragmented frame is sent to channel detection website.

12. methods according to claim 11, it is characterised in that at the channel letter of the subcarrier group to be feedback by M Before breath intersection is filled to N number of fragmented frame, also include:

Receive the channel information for detecting described subcarrier group to be feedback of described channel detection website transmission Detectable signal；

Obtain the channel information of L sub-carrier wave set according to described detectable signal, wherein, described L is whole more than 1 Number, described L is more than or equal to described M.

13. methods according to claim 11, it is characterised in that at the channel letter of the subcarrier group to be feedback by M Before breath intersection is filled to N number of fragmented frame, also include:

Receive the instruction message of the value for indicating described M and/or described N that described channel detection website sends.

14. methods according to claim 13, it is characterised in that for indicating the described instruction of the value of described M to disappear Breath comprises the bandwidth of the channel information of requirement and the instruction information of frequency range.

15. methods according to claim 11, it is characterised in that the channel information of described subcarrier group include with down to One of few:

The channel information of a subcarrier in described subcarrier group；

16. methods according to claim 11, it is characterised in that fill out in each fragmented frame in described N number of fragmented frame The maximum data list that the length of the channel information of the subcarrier group filled is supported less than or equal to described channel detection website Unit's block length.

17. methods according to claim 11, it is characterised in that by the channel information of M subcarrier group to be feedback Filling to the N number of fragmented frame that intersects includes:

The channel information of the i-th subcarrier group in described M subcarrier group to be feedback is filled to described N In (i mod N)+1 fragmented frame in individual fragmented frame, wherein, i mod N is the i remainder divided by N, institute State i=0,1,2,3 ..., M-1.

18. methods according to claim 11, it is characterised in that described N number of fragmented frame is sent to channel detection station Point includes:

Described N number of fragmented frame is encapsulated as N number of medium access control layer protocol data cell MPDU；

Described N number of MPDU is polymerized to aggregated media access control protocol data cell A-MPDU；

Described A-MPDU is sent to described channel detection website.

19. methods according to claim 11, it is characterised in that in each fragmented frame in described N number of fragmented frame all Comprise at least one following information:

20. 1 kinds of channel information acquisition devices, it is characterised in that including:

First receiver module, for receiving N number of fragmented frame that channel feedback website sends, wherein, described N number of Fragmented frame is filled with the channel information of M subcarrier group to be feedback altogether, described M subcarrier to be feedback The channel information of group is intersected in filling extremely described N number of fragmented frame, and described M is the integer more than 1, institute Stating N is the integer more than or equal to 1, and described subcarrier group includes one or more subcarrier；

First acquisition module, for obtaining described M the subcarrier to be feedback filled in described N number of fragmented frame The channel information of group.

21. devices according to claim 20, it is characterised in that described first acquisition module includes:

First determines unit, for determining the fragmented frame being properly received；

Second determines unit, the channel information of the subcarrier group filled in the fragmented frame being properly received described in utilizing Determine the channel information of described M subcarrier group to be feedback.

22. devices according to claim 21, it is characterised in that described second determines that unit includes:

23. devices according to claim 22, it is characterised in that fill out in the fragmented frame not being properly received described in estimating During the channel information of the subcarrier group filled, the letter of the subcarrier group filled in the fragmented frame being correctly received utilized The weight of road information and the subcarrier group # being properly received and the distance of the subcarrier group # not being correctly received Be inversely proportional to, wherein, described in the subcarrier group # that is properly received be described the utilized fragmented frame being correctly received The numbering of the subcarrier group that the channel information of the subcarrier group of middle filling is corresponding, the described subcarrier not being correctly received Group # is the subcarrier group that in the described fragmented frame not being properly received, the channel information of the subcarrier group of filling is corresponding Numbering.

24. devices according to claim 21, it is characterised in that also include:

First transmitting element, is used for when the number of the described fragmented frame being properly received is less than or equal to threshold value, to Described channel feedback website sends for asking described channel feedback website to retransmit the letter of the fragmented frame not being properly received Road report poll frame.

25. devices according to claim 20, it is characterised in that also include:

First sending module, for sending for detecting described subcarrier group to be feedback to described channel feedback website The detectable signal of channel information, wherein, described detectable signal is for described channel feedback station for acquiring L son load The channel information of ripple group, described L is the integer more than 1, and described L is more than or equal to described M.

26. devices according to claim 20, it is characterised in that also include:

Second sending module, for sending for indicating described N's and/or described M to described channel feedback website The instruction message of value.

27. devices according to claim 26, it is characterised in that for indicating the described instruction of the value of described M to disappear Breath comprises the bandwidth of the channel information of requirement and the instruction information of frequency range.

28. devices according to claim 20, it is characterised in that the channel information of described subcarrier group include with down to One of few:

The channel information of a subcarrier in described subcarrier group；

29. devices according to claim 20, it is characterised in that in each fragmented frame in described N number of fragmented frame all Comprise at least one following information:

30. 1 kinds of channel information dispensing devices, it is characterised in that including:

Packing module, the channel information for the subcarrier group to be feedback by M intersects fills to N number of fragmented frame In, wherein, described M is the integer more than 1, and described N is the integer more than or equal to 1, described subcarrier Group includes one or more subcarrier；

3rd sending module, for being sent to channel detection website by described N number of fragmented frame.

31. devices according to claim 30, it is characterised in that also include:

Second receiver module, for receive that described channel detection website sends for detecting described son load to be feedback The detectable signal of the channel information of ripple group；

Second acquisition module, for obtaining the channel information of L sub-carrier wave set according to described detectable signal, wherein, Described L is the integer more than 1, and described L is more than or equal to described M.

32. devices according to claim 30, it is characterised in that also include:

3rd receiver module, for receive that described channel detection website sends for indicating described M and/or described The instruction message of the value of N.

33. devices according to claim 32, it is characterised in that for indicating the described instruction of the value of described M to disappear Breath comprises the bandwidth of the channel information of requirement and the instruction information of frequency range.

34. devices according to claim 30, it is characterised in that the channel information of described subcarrier group include with down to One of few:

The channel information of a subcarrier in described subcarrier group；

35. devices according to claim 30, it is characterised in that fill out in each fragmented frame in described N number of fragmented frame The maximum data list that the length of the channel information of the subcarrier group filled is supported less than or equal to described channel detection website Unit's block length.

36. devices according to claim 30, it is characterised in that described packing module includes:

37. devices according to claim 30, it is characterised in that described 3rd sending module includes:

Encapsulation unit, for being encapsulated as N number of medium access control layer protocol data cell by described N number of fragmented frame MPDU；

Polymerized unit, for being polymerized to an aggregated media access control protocol data sheet by described N number of MPDU Unit A-MPDU；

Second transmitting element, for being sent to described channel detection website by described A-MPDU.

38. devices according to claim 30, it is characterised in that in each fragmented frame in described N number of fragmented frame all Comprise at least one following information: