WO2017000308A1 - 传输信道状态信息的方法、接入点和站点 - Google Patents

传输信道状态信息的方法、接入点和站点 Download PDF

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Publication number
WO2017000308A1
WO2017000308A1 PCT/CN2015/083186 CN2015083186W WO2017000308A1 WO 2017000308 A1 WO2017000308 A1 WO 2017000308A1 CN 2015083186 W CN2015083186 W CN 2015083186W WO 2017000308 A1 WO2017000308 A1 WO 2017000308A1
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WIPO (PCT)
Prior art keywords
channel state
state information
scheduling message
resource
message
Prior art date
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PCT/CN2015/083186
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English (en)
French (fr)
Inventor
于健
杨讯
淦明
林梅露
禄·彼得
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to AU2015401078A priority Critical patent/AU2015401078B2/en
Priority to KR1020187001875A priority patent/KR102021000B1/ko
Priority to PCT/CN2015/083186 priority patent/WO2017000308A1/zh
Priority to CA2990966A priority patent/CA2990966C/en
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580081183.7A priority patent/CN107710803B/zh
Priority to RU2018103914A priority patent/RU2683957C1/ru
Priority to JP2017568110A priority patent/JP6549739B2/ja
Priority to EP19219990.9A priority patent/EP3723405A1/en
Priority to EP15896839.6A priority patent/EP3301963B1/en
Priority to BR112018000068-0A priority patent/BR112018000068A2/zh
Publication of WO2017000308A1 publication Critical patent/WO2017000308A1/zh
Priority to US15/860,255 priority patent/US10439699B2/en
Priority to US16/503,284 priority patent/US10790891B2/en
Priority to US16/984,826 priority patent/US11563475B2/en
Priority to US18/151,287 priority patent/US20230268969A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • H04L1/0073—Special arrangements for feedback channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the field of communications and, more particularly, to methods, access points and stations for transmitting channel state information.
  • MU-MIMO multi-user multiple input
  • MU-MIMO utilizes a spatial dimension to implement multiple user transmissions through multiple parallel channels.
  • this method requires all or part of the channel state information of the transmitting end or the receiving end, otherwise the receiving end cannot correctly demodulate the multi-channel valid signal, resulting in transmission failure.
  • MU-MIMO technology can be applied to a WLAN network, in order to simultaneously schedule multiple users to perform channel state information feedback, when the station (STA) capacity is limited.
  • An access point (AP, Access Point) can send a null packet declaration (NDPA, Null Data Packet Announcement), a null data packet (NDP, Null Data Packet), and a beamforming report polling frame (Beamforming Report Poll, BF Report Poll Therefore, the STA performs channel estimation according to the information carried by the NDPA and the high efficient long training filed (HE-LTF) carried by the NDP, and feeds back the channel state information to the AP within a long time range.
  • NDPA Null Data Packet Announcement
  • NDP Null Data Packet
  • Beamforming Report Poll Beamforming Report Poll, BF Report Poll
  • STAs are introduced in the 802.11ax standard, and some STAs cannot immediately provide feedback.
  • STAs have limited capabilities without supporting immediate feedback or limited resources allocated by APs.
  • STAs cannot immediately perform channel state information. Feedback, the AP may waste resources due to long waiting for receiving channel state information, thereby reducing channel state information transmission efficiency.
  • Embodiments of the present invention provide a method, an access point, and a station for transmitting channel state information, which can improve transmission efficiency of channel state information.
  • the first aspect provides a method for transmitting channel state information, where the method includes: the station STA receives a feedback indication message sent by the access point AP, a high-efficiency long training sequence, and a first resource scheduling message, where the feedback indication message is used. Determining at least two target STAs that need to feed back channel state information to the AP, the high efficiency long training sequence being used to determine a first channel state letter of the STA
  • the first resource scheduling message is used to indicate a first communication resource used by the STA to feed back the feedback indication message, the high efficiency long training sequence, and the first resource scheduling message;
  • the STA sends an acknowledgement message to the AP by using the first communication resource, where the acknowledgement message is used to indicate that the feedback indication message has been received, and the A long training sequence and the first resource scheduling message.
  • a method for transmitting channel state information comprising: sending a feedback indication message, a high efficiency long training sequence, and a first resource scheduling message, where the feedback indication message is used to indicate that at least channel state information needs to be fed back Two target STAs, the high-efficiency long training sequence is used to determine first channel state information of the target STA, where the first resource scheduling message is used to indicate that the target STA is for the feedback indication message, the high-efficiency long training sequence a first communication resource used for feeding back the first resource scheduling message; receiving an acknowledgment message sent by the target STA by using the first communication resource, where the acknowledgment message is used to indicate that the target STA has received The feedback indication message, the high efficiency long training sequence, and the first resource scheduling message.
  • a method for transmitting channel state information comprising: receiving a first resource scheduling message, a first feedback indication message, and a first high-efficiency long training sequence sent by the access point AP according to the first indication information,
  • the first feedback indication message is used to indicate at least two target station STAs that need to feed back channel state information to the AP, where the first resource scheduling message or the first feedback indication message includes the first indication Information, the first indication information is used to indicate whether the STA immediately feeds back channel state information, and the first high-efficiency long training sequence is used to determine first channel state information of the STA, where the first resource scheduling message is used.
  • a fourth aspect provides a method for transmitting channel state information, the method comprising: determining first indication information, where the first indication information is used to indicate at least two target sites that need to feed back channel state information to an access point AP Whether the STA immediately feeds back the channel state information, and sends the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence according to the first indication information, where the first resource scheduling message or the first feedback
  • the indication message includes the first indication letter
  • the first feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP, where the first high-efficiency long training sequence is used to determine first channel state information of the target STA,
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back a second channel state information or a confirmation message, where the second channel state information is part of the first channel state information or
  • the acknowledgment message is used to indicate that the first feedback indication message, the first high-efficiency long training sequence, and the first resource
  • a fifth aspect provides a method for transmitting channel state information, where the method includes: a station STA receives a feedback indication message sent by an access point AP, a high-efficiency long training sequence, and a first resource scheduling message, where the feedback indication message is used.
  • the high-efficiency long training sequence is used to determine first channel state information of the target STA
  • the first resource scheduling message is used to indicate the target STA feedback
  • the first communication resource used when the second channel state information is used, the second channel state information is a part of the first channel state information; when the feedback indication message is parsed and determined to belong to the target STA, according to the Performing channel estimation on the high-efficiency long training sequence, obtaining the first channel state information, and transmitting the second channel state information to the AP by using the first communication resource; receiving the first polling scheduling sent by the AP a message and a second resource scheduling message, where the first polling scheduling message is used by the AP to request third channel state information from the STA,
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information, and the third channel state information is after the first channel state information is removed from the second channel state information Part or all, the third resource scheduling message is used to indicate a
  • a method for transmitting channel state information comprising: sending a feedback indication message, a high-efficiency long training sequence, and a first resource scheduling message, where the feedback indication message is used to indicate that a channel needs to be fed back to the AP At least two target STAs of the status information, the high-efficiency long training sequence is used to determine first channel state information of the target STA, and the first resource scheduling message is used to indicate that the target STA uses the second channel state information to feed back a first communication resource, the second channel state information being part of the first channel state information; receiving the target STA Sending, by the first communication resource, the second channel state information, sending a first polling scheduling message and a second resource scheduling message, where the first polling scheduling message is used to obtain a request from the target STA
  • the third channel state information, the first polling scheduling message includes segment information of the third channel state information in the first channel state information, and the third channel state information is the first channel state information Part or all after the second channel state information, the third resource scheduling
  • the seventh aspect provides a station for transmitting channel state information
  • the station includes: a first receiving unit, configured to receive a feedback indication message sent by the access point AP, a high-efficiency long training sequence, and a first resource scheduling message, where The feedback indication message is used to indicate at least two target station STAs that need to feed back channel state information to the AP, where the high-efficiency long training sequence is used to determine first channel state information of the STA, where the first resource scheduling message is used to indicate a first communication resource used by the STA to feed back the feedback indication message, the high-efficiency long training sequence, and the first resource scheduling message; the first sending unit is configured to parse the receiving unit And sending the acknowledgement message to the AP by using the first communication resource, where the acknowledgement message is used to indicate that the feedback indication message has been received, and the high-efficiency long training is received.
  • a sequence and the first resource scheduling message is used to indicate at least two target station STAs that need to feed back channel state information to the AP, where the high-efficiency long training sequence is
  • the eighth aspect provides an access point for transmitting channel state information
  • the access point includes: a first sending unit, configured to send a feedback indication message, a high-efficiency long training sequence, and a first resource scheduling message to the station STA, where The feedback indication message is used to indicate at least two target STAs that need to feed back channel state information, where the high-efficiency long training sequence is used to determine first channel state information of the target STA, where the first resource scheduling message is used to indicate the target a first communication resource used by the STA to feed back the feedback indication message, the high-efficiency long training sequence, and the first resource scheduling message; the first receiving unit is configured to receive the target STA by using the first sending unit An acknowledgment message sent by the first communication resource indicated by the first resource scheduling message, where the acknowledgment message is used to indicate that the target STA has received the feedback indication message, the high-efficiency long training sequence, and The first resource scheduling message.
  • the ninth aspect provides a station for transmitting channel state information, where the station includes: a first receiving unit, configured to receive a first resource scheduling message, a first feedback indication message, and a first feedback instruction message that are sent by the access point AP according to the first indication information. a first high efficiency long training sequence, wherein the first feedback indication message is used
  • the first resource scheduling message or the first feedback indication message includes the first indication information, where the first indication information is used to indicate at least two target station STAs that need to feed back channel state information to the AP.
  • the first high-efficiency long training sequence is used to determine first channel state information of the STA, and the first resource scheduling message is used to instruct the STA to feed back second channel state information or
  • the first communication resource used in the confirmation message is part or all of the first channel state information, and the acknowledgement message is used to indicate that the first feedback indication message has been received.
  • the first sending unit is configured to: when parsing the feedback indication message received by the first receiving unit, and determining to belong to the STA, according to the Channel-estimating the high-efficiency long training sequence received by a receiving unit to determine the first channel state information and received by the first receiving unit
  • the first communication resource a resource scheduling message indicated by the second transmitting channel state information or the acknowledgment message to the AP.
  • the tenth aspect provides an access point for transmitting channel state information, where the access point includes: a determining unit, configured to determine first indication information, where the first indication information is used to indicate that the information needs to be fed back to the access point AP. Whether the at least two target stations STA of the channel state information immediately feed back the channel state information; the first sending unit is configured to send, according to the first indication information that is determined by the determining unit, the first resource scheduling message, the first feedback to the target STA An indication message and a first high-efficiency long training sequence, where the first resource scheduling message or the first feedback indication message includes the first indication information, where the first feedback indication message is used to indicate that the AP needs to be sent to the AP At least two target station STAs that feed back channel state information, the first high-efficiency long training sequence is used to determine first channel state information of the target STA, and the first resource scheduling message is used to indicate that the target STA is fed back The first communication resource used when the two channel status information or the acknowledgement message is used, and the second channel state information
  • the acknowledgment message is used to indicate that the first feedback indication message, the first high-efficiency long training sequence, and the first resource scheduling message have been received, and the first receiving unit is configured to receive the target STA according to the The first resource scheduling message, the first feedback indication message, and the second channel state information or the first high efficiency long training sequence sent by the first communication unit by using the first communication resource Confirm the message.
  • the eleventh aspect provides a station for transmitting channel state information, where the station includes: a first receiving unit, configured to receive a feedback indication message, an effective long training sequence, and a first resource scheduling message sent by the access point AP, where The feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP, and the high-efficiency long training sequence is used to determine the first channel of the STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the STA to feed back second channel state information, and the second channel state information is part of the first channel state information; a sending unit, configured to perform channel estimation according to the high-efficiency long training sequence received by the first receiving unit, when parsing the feedback indication message received by the first receiving unit and determining that the target STA is belonged to the target STA, Transmitting, by the first channel state information, the first communication resource indicated by the first resource scheduling message received by the first receiving unit to the AP, the second channel state information; Receiving, by the AP, a first polling scheduling message and a second resource scheduling message, where the first polling scheduling message is used by the AP to obtain third channel state information from the STA, where the first The polling scheduling message includes segment information of the third channel state information in the first channel state information, and the third channel state information is removed from the first channel state information Part or all after the second channel state information, the third resource scheduling message is used to indicate a second communication resource used by the STA
  • the twelfth aspect provides an access point for transmitting channel state information
  • the access point includes: a first sending unit, configured to send a feedback indication message, a high efficiency long training sequence, and a first resource scheduling message, where the feedback The indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP, where the high-efficiency long training sequence is used to determine first channel state information of the target STA, where the first resource scheduling message is used to indicate a first communication resource used when the target STA feeds back the second channel state information, where the second channel state information is part of the first channel state information, and the first receiving unit is configured to receive the target STA
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit the channel state information, and the site feeds back the confirmation message to the access point, so that part can be avoided.
  • the site does not support the waste of resources caused by immediate feedback, thereby improving the transmission efficiency of channel state information.
  • FIG. 1A is a schematic diagram of a communication system scenario to which an embodiment of the present invention is applicable.
  • FIG. 1B is a schematic flowchart of a method for transmitting channel state information according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for transmitting channel state information according to another embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • FIG. 7A and 7B are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to an embodiment of the present invention.
  • FIG. 8A and FIG. 8B are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to another embodiment of the present invention.
  • FIG. 9A and FIG. 9B are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to still another embodiment of the present invention.
  • FIG. 10A, FIG. 10B and FIG. 10C are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to still another embodiment of the present invention.
  • FIG. 11 is a structural diagram of a combined frame of a beamforming report polling frame and a trigger frame based on a trigger frame design according to an embodiment of the present invention.
  • FIG. 12 is a structural diagram of a combined frame of a beamforming report polling frame and a trigger frame based on a beamforming report polling frame design according to another embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a station for transmitting channel state information according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of an access point for transmitting channel state information according to another embodiment of the present invention.
  • FIG. 15 is a schematic diagram of a station for transmitting channel state information according to still another embodiment of the present invention.
  • FIG. 16 is a schematic diagram of an access point for transmitting channel state information according to still another embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a station for transmitting channel state information according to still another embodiment of the present invention.
  • FIG. 18 is a schematic diagram of an access point for transmitting channel state information according to still another embodiment of the present invention.
  • 19 is a schematic diagram of an apparatus for transmitting channel state information according to an embodiment of the present invention.
  • the technical solution of the present invention can be applied to various communication systems that need to feed back channel state information for data transmission, for example, a wireless local area network (WLAN) using MU-MIMO technology, for example, wireless fidelity (Wi -Fi, Wireless Fidelity), etc.
  • WLAN wireless local area network
  • MU-MIMO technology for example, wireless fidelity (Wi -Fi, Wireless Fidelity), etc.
  • a station may also be called a system, a subscriber unit, an access terminal, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent.
  • User equipment or UE User Equipment
  • the STA may be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), and a wireless local area network ( A handheld device such as a Wi-Fi) communication function, a computing device, or other processing device connected to a wireless modem.
  • an access point in the WLAN, can be used to communicate with the access terminal over the wireless local area network, and transmit data of the access terminal to the network side, or transmit data from the network side to the access side. Enter the terminal.
  • FIG. 1A is a schematic diagram of a scenario of a communication system to which an embodiment of the present invention is applicable.
  • the communication system of FIG. 1A includes one AP and three STAs (eg, STA1, STA2, and STA3 in FIG. 1A).
  • the AP can communicate with STA1, STA2, and STA3.
  • the AP can schedule multiple STAs to perform feedback and transmission of channel state information. It should be noted that the number of STAs may be two or more.
  • FIG. 1B is a schematic flowchart of a method for transmitting channel state information according to an embodiment of the present invention.
  • the method of Figure 1B can be performed by a site.
  • the station STA receives the feedback indication message, the high-efficiency long training sequence, and the first resource scheduling message sent by the access point AP, where the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP, and the high-efficiency long training sequence
  • the first channel scheduling information used to determine the target STA, the first resource scheduling message is used to indicate the first communication resource used by the target STA to feed back the feedback indication message, the high efficiency long training sequence, and the first resource scheduling message.
  • the STA parses the feedback indication message and determines that it belongs to the target STA, the STA sends an acknowledgment message to the AP by using the first communication resource, where the acknowledgment message is used to indicate that the feedback indication message, the high-efficiency long training sequence, and the first resource scheduling message have been received.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit the channel state information, and the site feeds back the confirmation message to the access point, so that part can be avoided.
  • the site does not support the waste of resources caused by immediate feedback, thereby improving the transmission efficiency of channel state information.
  • the access point may send a feedback indication message, a high-efficiency long training sequence, and a resource scheduling message (for example, a first resource scheduling message) to the station to trigger the station to feed back the channel state information to the access point.
  • the station may receive the feedback indication message, the high-efficiency long training sequence, and the resource scheduling message sent by the access point.
  • the site feeds back an acknowledgement message to the access point to indicate that the feedback indication message has been received, and the high-efficiency long training sequence is received.
  • resource scheduling messages In general, when the station does not support immediate feedback of channel state information, an acknowledgment message can be fed back to the access point. When the station can immediately feed back the channel state information, it can directly return the channel state information to the access point, or return the acknowledgement message first.
  • the channel state information may be fed back by using a beamforming report (BF Report) frame as a carrier.
  • BF Report beamforming report
  • the acknowledgment message does not carry channel state information, and is only used to refer to It indicates that a feedback indication message, an efficient long training sequence, and a resource scheduling message have been received.
  • the acknowledgment message explicitly indicates that the feedback indication message, the high-efficiency long training sequence, and the resource scheduling message have been received, and the access point is further triggered, and the station can feed back the channel state information.
  • the acknowledgement message may be an Acknowledgement (ACK) frame or a Block Acknowledge (BA) frame.
  • time domain resources, frequency domain resources, and airspace resources in communication resources used by multiple sites are included. At least one is different from each other.
  • the communication resources used by multiple sites may be frequency domain resources that are the same time domain resource but do not interfere with each other (for example, orthogonal), or may be airspaces that are unified time domain resources but do not interfere with each other (for example, orthogonal). Resources.
  • the feedback indication message may be used to indicate at least two target STAs that need to feed back channel state information to the access point.
  • the feedback indication message may include identification information of the target site that needs to be fed back, a type of feedback (eg, single-user feedback or multi-user feedback), a number of columns that require feedback, and the like.
  • the content and the form of the feedback indication message may be similar to the information carried in the NDPA sent by the AP broadcast in the prior art, and a detailed description thereof is omitted herein to avoid redundancy.
  • the station may estimate the channel according to the efficient long training sequence to determine channel state information of the target STA.
  • the number of symbols of the efficient long training sequence is often equal to the number of antennas of the access point, so that the station can completely measure the channel.
  • the high-efficiency long training sequence is similar to the function, the generating method, and the using method of the long training sequence in which the NDP is used for channel estimation in the prior art.
  • the resource scheduling message is used to indicate a communication resource (for example, a first communication resource) used by each target STA when performing multi-user uplink feedback.
  • the communication resource may include location information of a resource block when the station performs uplink data transmission, Resource parameter information, etc.
  • the communication resource may be a frequency domain resource that corresponds to the same time period and does not interfere with each other (for example, orthogonal) in the frequency domain, and thus, orthogonal frequency division multiple access (OFDMA, Orthogonal Frequency Division) may be adopted between the AP and the multiple target STAs. Multiple access) transmits channel state information.
  • OFDMA orthogonal frequency division multiple access
  • the feedback indication message, the high-efficiency long training sequence, and the resource scheduling message that are sent by the access point to the multiple sites can be implemented by sending a combined frame of the NDPA, the NDP, and the trigger frame.
  • the specific manner of combining NDPA, NDP, and trigger frames is not limited.
  • the access point may send the NDPA first, and then send the combined frame of the NDP and the trigger frame.
  • the NDPA may include a feedback indication message
  • the combined frame of the NDP and the trigger frame may include a resource scheduling message and a high-efficiency long training sequence for multi-site channel state information feedback.
  • Resource scheduling message It can be carried in the High Efficiently Signal Field-B (HE-SIG-B), and the high-efficiency long training sequence can carry the high-efficiency long training sequence in the same frame (or the same data packet) (HE- LTF, high efficient long training filed) field.
  • HE-SIG-B High Efficiently Signal Field-B
  • HE- LTF high efficient long training filed
  • the access point may first send a combined frame of the NDPA frame and the trigger frame, and then send the NDP.
  • a feedback indication message and a resource scheduling message for each site may be included in the combined frame of the NDPA frame and the trigger frame.
  • the combined frame of the NDPA frame and the trigger frame may be used to introduce an information field of each site on the basis of the NDPA, and is used to indicate a feedback indication message corresponding to each site.
  • the feedback indication message may include parameters for each STA to estimate or feed back channel state information.
  • the resource scheduling message may include resource block location information, resource parameter information, and the like when each station performs uplink transmission, for example, a number of spatio-temporal flows.
  • An efficient long training field equal to the number of antennas of the access point may be included in the NDP.
  • the access point can also directly send a combined frame of NDPA, NDP, and trigger frames to the station.
  • the resource indication message included in the feedback indication message and the trigger frame of the NDPA may be carried in the HE-SIG-B field of the combined frame, and the high-efficiency long training sequence may be carried in the same frame (or the same data packet) HE-LTF. Field.
  • the resource scheduling message may be specifically carried in the HE-SIG-B field in the NDP, and the high-efficiency long training sequence is specifically carried in the HE-LTF field in the same NDP frame, and the feedback indication message may be carried in the same NDP frame in the HE. - Field after the LTF field.
  • the combining frame of the two frames or the three types of frames mentioned in the embodiment of the present invention may be to expand or multiplex the existing frame structure, or redesign the frame structure to be specifically required by the embodiment of the present invention.
  • the combined frame may include a field for indicating that the combined frame is a special function has been given, and a certain field may be used to indicate the type of the combined frame.
  • the combined frames can be in different fields of the same data packet, and the combined frames can also be carried in the same MAC frame, or a combination of the two.
  • the combined frame of the three frames may be a combined frame of any two or all of them.
  • the station may independently decide whether to perform immediate feedback according to its own capabilities.
  • the channel state information can be fed back to the access point after the X Inter-Frame Space (XIFS).
  • XIFS X Inter-Frame Space
  • the node may first feed back an acknowledgement message to indicate receipt of the combined frame and estimate the channel state information.
  • the specific reason for the immediate feedback of the site is not limited in the embodiment of the present invention. For example, when the capability of the site is insufficient, the priority of the site buffer channel state information is lower than the first threshold, or the size of the resource block of the communication resource allocated by the access point to the site is less than the threshold, Think the site does not support immediate feedback.
  • the station may determine the first channel state information according to the high efficiency long training sequence.
  • a beamforming report is typically a frame carrying a large number of bytes, while an acknowledgment message typically has only a few or a few tens of bytes of short frames.
  • the station may transmit other frames while feeding back the acknowledgement message to the access point according to the resource scheduling message and the data buffered by the access point.
  • an ACK frame and a data frame can be aggregated and sent together.
  • the site may also send a resource allocation request message to report the cache information of the uplink data to the access point, so that the access point knows that it needs to transmit the uplink data and the required resources. .
  • the site when the site feeds back the confirmation message, it can also report to the access point how long it takes to obtain the feedback channel status information. In this way, when the site feeds back the confirmation message to the access point, other information is fed back, which can further improve the efficiency of resource transmission and avoid waste of resources.
  • the target station after the target station receives the feedback indication message, the efficient long training sequence, and the resource scheduling message, it may be determined whether immediate feedback channel state information (eg, first channel state information) is supported.
  • immediate feedback channel state information eg, first channel state information
  • the acknowledgement message may be sent to the AP through the first communication resource after receiving the feedback indication message, the efficient long training sequence, and the X frame interval XIFS of the first resource scheduling message.
  • the station may receive the second resource scheduling message sent by the AP, where the second resource scheduling message is used to indicate the second communication resource used by the target STA to feed back the second channel state information, and the second communication resource is used to The AP transmits second channel state information, where the second channel state information is part or all of the first channel state information.
  • the access point may send a resource scheduling message (for example, a second resource scheduling message) to the target station, where the second resource scheduling message is used to indicate that the target STA feeds back channel state information (for example, The communication resource (for example, the second communication resource) used when the second channel state information is).
  • the station may send part or all of the channel state information that is not successfully fed back to the access point by using the second communication resource.
  • the access point may continue to send the polling scheduling message and the resource scheduling message to the site, so that the site Channel state information can continue to be fed back to the access point until full feedback is complete.
  • the polling scheduling message may be carried in a beamforming report polling frame, and the beamforming report polling frame may include an indication field indicating that the content needs to continue to be transmitted.
  • the access point may send a beamforming report polling frame to the station according to the feedback of the station and its own receiving situation (for example, the resource block size allocated by the access point, or whether the access point successfully receives the requested acknowledgment message or channel state information). To indicate which shards the site needs to feed back on the next transfer.
  • the station may receive the first polling scheduling message and the third resource scheduling message sent by the AP, where the first polling scheduling message is used by the AP to obtain third channel state information from the target STA, where the first polling scheduling message includes The segment information of the third channel state information in the first channel state information, the third channel state information is part or all of the first channel state information after the second channel state information is removed, and the third resource scheduling message is used to indicate the target STA feedback.
  • the third communication resource used in the three-channel state information the station may send the third channel state information to the AP through the third communication resource.
  • the segment information of the third channel state information in the first channel state information may be indication information of which fragments need to be fed back when the third channel state information is fed back, and may also be which fragments need to be fed back.
  • the specific manner of combining the specific polling scheduling message (for example, the first polling scheduling message) and the resource scheduling message (for example, the third resource scheduling message) is not limited in the embodiment of the present invention, and the structure of the combined frame may be
  • the existing frame structure is multiplexed, for example, the existing trigger frame or beamforming report poll frame is expanded and multiplexed, and a new frame structure that satisfies the function can be redesigned.
  • the first polling scheduling message and the third resource scheduling message may be carried in the same data packet or the same frame of the same data packet.
  • the polling scheduling message and the resource scheduling message may be carried in the same frame based on the trigger frame design, and the frame may include a Frame Control field, a beamforming report polling type indication (BF Report Poll type indication) field, and a resource.
  • a Resource allocation reuse indication field may be used to indicate that the frame can be used for resource scheduling.
  • the beamforming report polling type indication field can be used to indicate that the type of frame can be used to poll the beamforming report.
  • the feedback slice retransmission bit bitmap field can be used to indicate which fragments are transmitted.
  • the resource allocation information field may include a resource scheduling message.
  • the resource allocation reuse indication field may be used to indicate the communication resource indicated by the frame and the previous one. Whether the communication resources used for the secondary transmission are the same.
  • the resource allocation information field may be omitted, and the communication resource at the time of the last transmission may be directly used for transmission.
  • the communication resource included in the resource scheduling message included in the resource allocation information field in the frame may be used for transmission.
  • the Site Identification field is used to indicate the site that needs to feed back channel state information to the access point.
  • the first polling scheduling message and the third resource scheduling message may be carried in a trigger trigger frame of the same data packet, where the trigger frame may include a first beamforming report polling type indication field and a first feedback fragment retransmission bit Figure field.
  • the trigger frame may further include at least one of a first resource allocation information field and a first resource allocation reuse indication field, where the third resource scheduling message is located in the first resource allocation information field, and the first polling scheduling message is located at the first The feedback fragment retransmits the bit bitmap field.
  • the first resource allocation reuse indication field is used to indicate whether the third resource scheduling message is the same as the second resource scheduling message.
  • the trigger frame may further include an identifier field of the target STA.
  • the first polling scheduling message and the third resource scheduling message are carried in a first beamforming report polling BF Report Poll frame of the same data packet
  • the BF Report Poll frame may include a receiving address field and a second feedback fragment retransmission.
  • the first BF Report Poll frame may further include at least one of a second resource allocation information field and a second resource allocation reuse indication field, wherein the third The resource scheduling message is located in the second resource allocation information field, the first polling scheduling message is located in the third feedback fragment retransmission bit bitmap field, and the indication information of the third resource scheduling message is located in the second resource allocation reuse indication field.
  • the frame control field can be used to indicate that the frame can be used for polling of the beamforming report.
  • the associated address field is used to indicate the identifier of the site being polled.
  • the feedback slice retransmission bit bitmap field in the original beamforming report polling frame field may be used to indicate that the type of the frame is a combined frame of the beamforming report polling frame and the trigger frame.
  • the resource allocation information field may include a resource scheduling message.
  • the resource allocation reuse indication may be used to indicate whether the communication resource indicated by the frame is the same as the communication resource used in the previous transmission. When the communication resource indicated by the frame is the same as the communication resource used in the previous transmission, the resource allocation information field may be omitted, and the communication resource at the time of the last transmission may be directly used for transmission.
  • the third feedback fragment retransmission bit bitmap field is a feedback fragment retransmission bit bitmap field corresponding to each station one-to-one.
  • the BF Report Poll frame may further include an identifier field of the target STA.
  • the embodiment of the present invention does not limit how to indicate that the multiplexed frame or the designed new frame is used to trigger multi-user channel state information transmission.
  • the BF Report Poll frame may be indicated as a polling frame for triggering multi-user channel state information transmission in any of the following manners: a receiving address field, a second feedback fragment retransmission bit bitmap field, The length of the BF Report Poll frame.
  • the receiving address field may be a broadcast MAC address or a specific address from a Media Access Control (MAC) address of the original frame to indicate that the frame is a combination of a BF Report Poll frame and a trigger frame.
  • MAC Media Access Control
  • the second feedback fragment retransmission bit bitmap field may also be utilized to indicate that the BF Report Poll frame is used to trigger transmission of multi-user channel state information.
  • the second feedback fragment retransmission bit bitmap field may be set to 0 to indicate that the frame is a combined frame of a BF Report Poll frame and a trigger frame for triggering transmission of multi-user channel state information.
  • the length of the frame can also be utilized to indicate the type of the frame.
  • the length of the BF Report Poll frame is fixed, so the frame can be indicated by the length of the frame as a combined frame of the BF Report Poll frame and the trigger frame, for triggering multi-user channel state information. transmission.
  • this is a polling trigger frame by defining a new type of MAC frame.
  • An embodiment of the present invention is exemplified by taking a site as an example.
  • Each site may determine a feedback acknowledgement message or channel state information according to its own capabilities.
  • 1B is a detailed description of a method for transmitting channel state information according to an embodiment of the present invention from a site perspective, and a method for transmitting channel state information according to an embodiment of the present invention will be described from the perspective of an access point. .
  • FIG. 2 is a schematic flowchart of a method for transmitting channel state information according to another embodiment of the present invention.
  • the method of Figure 2 can be performed by an access point.
  • 201 Send a feedback indication message, a high-efficiency long training sequence, and a first resource scheduling to the station STA.
  • the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information
  • the high-efficiency long training sequence is used to determine first channel state information of the target STA
  • the first resource scheduling message is used to indicate that the target STA is directed to the feedback indication message.
  • the first communication resource used in the efficient long training sequence and the first resource scheduling message for feedback.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit the channel state information, and the site feeds back the confirmation message to the access point, so that part can be avoided.
  • the site does not support the waste of resources caused by immediate feedback, thereby improving the transmission efficiency of channel state information.
  • the acknowledgment message sent by the receiving target STA by using the first communication resource includes: receiving, by the target STA that does not support immediate feedback of the first channel state information, receiving the feedback indication message, the high-efficiency long training sequence, and An acknowledgment message sent by the first communication resource after the X frame spacing XIFS of the first resource scheduling message.
  • the method further includes: sending a second resource scheduling message.
  • the second resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the second channel state information.
  • the second channel state information is part or all of the first channel state information.
  • the method further includes: sending a first polling scheduling message and a third resource scheduling message.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the third resource scheduling message is used to indicate a third communication resource used by the target STA to feed back the third channel state information. Receiving third channel state information that is sent by the target STA through the third communication resource.
  • the first polling scheduling message and the third resource scheduling message are carried in the same data packet.
  • the first polling scheduling message and the third resource scheduling message are carried in a trigger trigger frame of the same data packet.
  • the trigger frame includes a first beamforming report polling type indication field and a first feedback fragment retransmission bit bitmap field.
  • the trigger frame further includes at least one of a first resource allocation information field and a first resource allocation reuse indication field.
  • Third resource scheduling The message is located in the first resource allocation information field, where the first polling scheduling message is located in the first feedback fragment retransmission bit bitmap field, and the first resource allocation reuse indication field is used to indicate whether the third resource scheduling message and the second resource scheduling message are the same.
  • the trigger frame further includes an identifier field of the target STA.
  • the first polling scheduling message and the third resource scheduling message are carried in a beamforming report polling BF Report Poll frame of the same data packet.
  • the BF Report Poll frame may include a receive address field, a second feedback slice retransmission bit bitmap field, and a third feedback slice retransmission bit bitmap field.
  • the BF Report Poll frame may further include at least one of a second resource allocation information field and a second resource allocation reuse indication field.
  • the third resource scheduling message is located in the second resource allocation information field.
  • the first polling scheduling message is located in the third feedback fragment retransmission bit bitmap field.
  • the indication information of the third resource scheduling message is located in the second resource allocation reuse indication field.
  • the BF Report Poll frame further includes an identifier field of the target STA.
  • the BF Report Poll frame is used as a polling frame for triggering multi-user channel state information transmission in any of the following manners: a receiving address field, a second feedback fragment retransmission bit The length of the graph field, BF Report Poll frame.
  • the target STA that does not support immediate feedback of the first channel state information includes at least one of the following conditions: the target STA has insufficient capability, and the target STA caches the priority of the first channel state information.
  • the size of the resource block below the first threshold and the first communication resource is less than a threshold.
  • the method for transmitting channel state information according to the embodiment of the present invention may be performed by an access point, and the corresponding process performed by the access point after the embodiment of FIG. 1B may be performed.
  • the corresponding process performed by the access point after the embodiment of FIG. 1B may be performed.
  • the above describes the feedback content indication message, the high-efficiency long training sequence and the resource scheduling message after the station receives the feedback indication message, the site autonomously determines the feedback content.
  • the access point sends the feedback indication message, the high-efficiency long training sequence, and the resource scheduling message, the following describes the feedback content according to the capability information reported by the station.
  • FIG. 3 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • the method of Figure 3 can be performed by a site.
  • 301. Receive a first resource scheduling message that is sent by the access point AP according to the first indication information, and first. a feedback indication message and a first high-efficiency long training sequence, where the first feedback indication message is used to indicate at least two target station STAs that need to feed back channel state information to the AP, where the first resource scheduling message or the first feedback indication message includes the first Instructing information, the first indication information is used to indicate whether the target STA immediately feeds back the channel state information, the first high-efficiency long training sequence is used to determine the first channel state information of the target STA, and the first resource scheduling message is used to indicate the target STA feedback.
  • the second channel state information or the first communication resource used in the acknowledgment message is part or all of the first channel state information
  • the acknowledgment message is used to indicate that the first feedback indication message has been received, the first high efficiency Long training sequence and first resource scheduling message.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the access point can indicate whether the site immediately feedbacks, and the site can be connected according to the site.
  • the indication of the ingress point feeds back the channel state information or the confirmation message to the access point, so that the waste of resources caused by the partial feedback not being supported by the partial site can be avoided, and the transmission efficiency of the channel state information can be improved.
  • the access point may receive the capability information reported by the station for the ability to perform immediate feedback. After receiving the capability information, the access point determines the indication information according to its own situation, and is used to indicate whether the site is Feedback now. After the access point determines the indication information, the indication information may be carried in the feedback indication message or the resource scheduling message, and the access point may send a feedback indication message, a high-efficiency long training sequence, and a resource scheduling message to the site to trigger the site to the access point. Feedback its channel status information. After receiving the feedback indication message, the high-efficiency long training sequence, and the resource scheduling message, the station may feed back the channel state information or the confirmation message to the access point according to the indication information.
  • the STA receives the first resource scheduling after receiving the first feedback indication message sent by the AP and the first high-efficiency long training sequence X frame spacing XIFS.
  • the first feedback indication message includes first indication information.
  • the station After receiving the first resource scheduling message X frame spacing XIFS, the station sends the second channel state information to the AP by using the first communication resource according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence.
  • the access point may first send the NDPA and the NDP to the station, and may indicate by using NDPA. This feedback is not immediate feedback, and the site does not have to respond immediately after receiving NDPA and NDP. Further, the access point sends a resource scheduling message (eg, a first resource scheduling message) to the station after the XIFS. After receiving the resource scheduling message sent by the access point, the station may feed back channel state information (for example, second channel state information) to the access point.
  • a resource scheduling message eg, a first resource scheduling message
  • channel state information for example, second channel state information
  • the channel state information fed back by the station to the access point may be part or all, that is, the station may feed back the channel state information to the access point at one time, or may feed back two or more times.
  • the first channel state information is all channel state information obtained by the station through channel estimation, and then the second channel state information may be part or all of the first channel state information.
  • the access point may continue to request the channel state information that is not successfully fed back from the site, so that the station continues to feed back the channel state information. Until the full feedback is completed.
  • the station may receive the first polling scheduling message and the second resource scheduling message sent by the AP, where the first polling scheduling message is used to request third channel state information from the target STA, where the first polling scheduling message includes the third The segment information of the channel state information in the first channel state information, the third channel state information is part or all of the first channel state information after the second channel state information is removed, and the second resource scheduling message is used to indicate that the target STA feeds back the third The second communication resource used in channel state information. Transmitting third channel state information to the AP through the second communication resource.
  • the training sequence sends an acknowledgement message to the AP over the first communication resource.
  • the access point may send a resource scheduling message to the station to schedule the station to feed back the channel state information to the access point.
  • the resource scheduling message may be carried in the trigger frame to trigger the station to feed back channel state information to the access point.
  • the station may receive the third resource scheduling message sent by the AP, where the third resource scheduling message is used to indicate the third communication resource used by the target STA when feeding back the fourth channel state information.
  • the station may send fourth channel state information through the third communication resource, where the fourth channel state information is part or all of the first channel state information.
  • the AP instructs different indications of different STAs, for example, some stations indicate immediate feedback, and some stations indicate non-immediate feedback. Then, when the AP continues to schedule the STA feedback channel state information in the next step, since some stations have feedback channel state information, then In the next step, the AP may send resource scheduling information and a polling scheduling message to simultaneously schedule the site to perform feedback of channel state information. If the AP in the indication information indicates that the STA is not immediate feedback, the next step AP may only send the resource scheduling message, and trigger the station to feed back the channel state information.
  • the access point may continue to send the resource scheduling message and the polling scheduling message to the station, so that the station continues to feed back the channel state information that is not successfully fed back to the access point.
  • the resource scheduling message and the polling scheduling message may be carried in different frames, or may be carried in the same frame of the same data packet.
  • the specific manner of combining the specific polling scheduling message and the resource scheduling message is not limited in the embodiment of the present invention.
  • the structure of the combined frames can be multiplexed with existing frame structures, for example, to extend and multiplex existing trigger frames or beamforming report poll frames, and to redesign new frame structures that satisfy the function.
  • the resource scheduling message and the polling scheduling message may be carried in a trigger frame or a BF Report Poll frame of the same data packet, and the multiplexing of the existing trigger frame or the BF Report Poll frame is described in the description of FIG. 1B. Avoid repetition and we will not go into details here.
  • the station may receive the second polling scheduling message and the fourth resource scheduling message sent by the AP.
  • the second polling scheduling message is used to obtain the fifth channel state information from the target STA.
  • the second polling scheduling message includes segment information of the fifth channel state information in the first channel state information, and the fifth channel state information is part or all of the first channel state information after the fourth channel state information is removed.
  • the fourth resource scheduling message is used to indicate a fourth communication resource used by the target STA to feed back the fifth channel state information.
  • the station may send the fifth channel state information to the AP through the fourth communication resource.
  • the training sequence transmits second channel state information to the AP through the first communication resource.
  • the access point may continue to request channel state information that is not successfully fed back to the site until complete feedback is completed.
  • the station may receive a third polling scheduling message and a fifth resource scheduling message sent by the AP.
  • the third polling scheduling message is used to obtain the sixth channel state information from the target STA.
  • the third polling scheduling message includes segment information of the sixth channel state information in the first channel state information.
  • the sixth channel state information is part or all after the first channel state information is removed from the second channel state information. unit.
  • the fifth resource scheduling message is used to indicate a fifth communication resource used by the target STA to feed back the sixth channel state information.
  • the station may send the sixth channel state information to the AP through the fifth communication resource.
  • the embodiment of the present invention does not limit how to indicate whether to perform immediate feedback. For example, it may be indicated by a certain field in the first indication information, or may be sent by sending a feedback indication message, a high-efficiency long training sequence, and a time sequence of the resource scheduling message.
  • the indication may also be indicated by the size of the resource block in the communication resource or the number of spatial streams used by the resource block.
  • the first indication information may include a field for indicating a time when the target STA feeds back the channel state information.
  • the first indication information may include a field for indicating all target STAs or respectively indicating whether each target STA immediately feeds back channel state information.
  • the first indication information is used to indicate non-immediate feedback.
  • the first indication information is used to indicate non-immediate feedback
  • the first indication information is used to indicate Feedback now.
  • the embodiment of the present invention does not limit the frame where the first feedback indication message, the first high-efficiency long training sequence, and the first resource scheduling message are located.
  • the access point determines not to indicate that the station immediately feeds back the channel state information
  • the NDPA, the NDP, and the trigger frame may be separately sent to the station, such that the first feedback indication message, the first high-efficiency long training sequence, and the first resource scheduling message are In a different frame.
  • the first feedback indication message, the first efficient long training sequence, and the first resource scheduling message are in different frames.
  • the embodiment of the present invention does not limit the data packet or frame in which the resource scheduling message and its corresponding polling scheduling message are located. Both can be in the same packet, or in the same frame of the same packet, or in different packets, or in different frames of the same packet.
  • the first polling scheduling message and the second resource scheduling message may be in the same data packet.
  • the second polling scheduling message and the fourth resource scheduling message may be in the same data packet.
  • the third polling scheduling message and the fifth resource scheduling message may also be in the same data packet.
  • An embodiment of the present invention is exemplified by taking a site as an example.
  • the access point may instruct all sites to perform immediate feedback, or may instruct all sites to perform non-immediate feedback, and may also instruct each site to perform immediate feedback or non-immediately. Feedback.
  • the access point may send a resource scheduling message and polling to the station. Schedule messages.
  • FIG. 4 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • the method of Figure 4 can be performed by an access point.
  • the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence are sent to the target STA according to the first indication information, where the first resource scheduling message or the first feedback indication message includes the first indication information.
  • the first feedback indication message is used to indicate at least two target station STAs that need to feed back channel state information to the AP, where the first high-efficiency long training sequence is used to determine first channel state information of the target STA, where the first resource scheduling message is used to indicate The first communication resource used by the target STA to feed back the second channel state information or the acknowledgment message, where the second channel state information is part or all of the first channel state information, and the acknowledgment message is used to indicate that the first feedback indication message has been received, The first efficient long training sequence and the first resource scheduling message.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the access point can indicate whether the site immediately feedbacks, and the site can be connected according to the site.
  • the indication of the ingress point feeds back the channel state information or the confirmation message to the access point, so that the waste of resources caused by the partial feedback not being supported by the partial site can be avoided, and the transmission efficiency of the channel state information can be improved.
  • sending the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence according to the first indication information includes: when the first indication information indicates that the target STA is not immediately When the channel state information is fed back, the first resource scheduling message is sent after the first feedback indication message and the X frame interval XIFS of the first high-efficiency long training sequence are sent.
  • the first feedback indication message includes first indication information, where the receiving target STA sends the second information by using the first communication resource according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence.
  • the channel status information or the acknowledgment message includes: after the X frame spacing XIFS of the first resource scheduling message is sent, the receiving target STA sends the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence by using the first communication resource. Second channel status information.
  • the method further includes: sending a first polling scheduling message and a second resource scheduling message.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the second resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the third channel state information. Receiving third channel state information that the target STA transmits through the second communication resource.
  • the second channel state information or the acknowledge message sent by the receiving target STA by using the first resource, the first feedback indication message, the first feedback indication message, and the first high-efficiency long training sequence by using the first communication resource includes: When the first indication information indicates that the target STA does not immediately feed back the channel state information, after receiving the X frame interval XIFS of the first resource scheduling message, the receiving target STA receives the first resource scheduling message, the first feedback indication message, and the first high efficiency length. A confirmation message sent by the training sequence through the first communication resource.
  • the method further includes: sending a third resource scheduling message.
  • the third resource scheduling message is used to indicate a third communication resource used by the target STA to feed back the fourth channel state information.
  • the fourth channel state information is part or all of the first channel state information.
  • the method further includes: sending a second polling scheduling message and a fourth resource scheduling message.
  • the second polling scheduling message is used to request the fifth channel state information from the target STA.
  • the second polling scheduling message includes segment information of the fifth channel state information in the first channel state information.
  • the fifth channel state information is part or all of the first channel state information after the fourth channel state information is removed.
  • the fourth resource scheduling message is used to indicate a fourth communication resource used by the target STA to feed back the fifth channel state information. Receiving fifth channel state information that is sent by the target STA through the fourth communication resource.
  • the second channel state information or the acknowledge message sent by the receiving target STA by using the first resource, the first feedback indication message, the first feedback indication message, and the first high-efficiency long training sequence by using the first communication resource includes: Receiving the target STA root after transmitting the X frame spacing XIFS of the first resource scheduling message when the first indication information indicates that the target STA immediately feeds back the channel state information And second channel state information that is sent by the first communication resource according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence.
  • the method further includes: sending a third polling scheduling message and a fifth resource scheduling message.
  • the third polling scheduling message is used to request the sixth channel state information from the target STA.
  • the third polling scheduling message includes segment information of the sixth channel state information in the first channel state information.
  • the sixth channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the fifth resource scheduling message is used to indicate a fifth communication resource used by the target STA to feed back the sixth channel state information. Receiving, by the target STA, the sixth channel state information that is sent by the fifth communication resource.
  • the first indication information includes a field for indicating a time when the target STA feeds back the channel state information.
  • the first indication information includes a field for indicating all target STAs or respectively indicating whether each target STA immediately feeds back channel state information.
  • the first indication information is used to indicate non-immediate feedback.
  • the first indication Information is used to indicate non-immediate feedback.
  • the first indication information is used to indicate immediate feedback when the size of the resource block in the first communication resource is greater than or equal to the first threshold or the number of spatial streams used by the resource block in the first communication resource is greater than or equal to the second threshold.
  • the first feedback indication message, the first efficient long training sequence, and the first resource scheduling message are in different frames.
  • the first polling scheduling message and the second resource scheduling message are in the same data packet.
  • the second polling scheduling message and the fourth resource scheduling message are in the same data packet.
  • the third polling scheduling message and the fifth resource scheduling message are in the same data packet.
  • the resource scheduling message and the polling scheduling message may be carried in different frames, or may be carried in the same frame of the same data packet.
  • the specific manner of combining the specific polling scheduling message and the resource scheduling message is not limited in the embodiment of the present invention.
  • the structure of the combined frames can be multiplexed with existing frame structures, for example, to extend and multiplex existing trigger frames or beamforming report poll frames, and to redesign new frame structures that satisfy the function.
  • Resource scheduling messages and polling scheduling messages can be carried in the same data packet
  • the case of multiplexing the existing trigger frame or the BF Report Poll frame with the existing trigger frame or the BF Report Poll frame has been described in the description of FIG. 1B. To avoid repetition, details are not described herein again.
  • the method for transmitting channel state information according to the embodiment of FIG. 4 may be performed by an access point, and the corresponding process performed by the access point after the embodiment of FIG. 3 may be performed. For brevity, details are not described herein again.
  • FIG. 5 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • the method of Figure 5 can be performed by a site.
  • the STA receives the feedback indication message, the high-efficiency long training sequence, and the first resource scheduling message sent by the access point AP, where the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP, and the high-efficiency long training sequence And determining, by the first channel information, a first resource scheduling message, where the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the second channel state information, where the second channel state information is part of the first channel state information.
  • the feedback indication message is parsed and determined to belong to the target STA, performing channel estimation according to the high-efficiency long training sequence, obtaining first channel state information, and transmitting second channel state information to the AP by using the first communication resource.
  • the first polling scheduling message is used by the AP to request third channel state information from the target STA, where the first polling scheduling message includes the third channel.
  • the segment information of the status information in the first channel state information, the third channel state information is part or all of the first channel state information after the second channel state information is removed, and the third resource scheduling message is used to indicate that the target STA feeds back the third channel.
  • the second communication resource used in the status information is used to indicate that the target STA feeds back the third channel.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the station feeds back channel state information to the access point, and the access point
  • the polling scheduling message and the resource scheduling message may be further sent to trigger the station to continue to feed back the channel state information that is not successfully fed back to the access point, so as to avoid resource waste caused by one-time feedback, thereby improving channel state information. Transmission efficiency.
  • the access point may send a feedback indication message to the station, which is efficient A long training sequence and a resource scheduling message (eg, a first resource scheduling message) to trigger the station to feed back its channel state information to the access point.
  • the station may receive the feedback indication message, the efficient long training sequence, and the resource scheduling message sent by the access point, and feed back the channel state information to the access point when the station determines that it belongs to the target site.
  • the access point may send a polling scheduling message (eg, a first polling scheduling message) and a resource scheduling message (eg, a second resource scheduling message) to the station. ) to trigger the site to continue to feed back channel state information that was not successfully fed back.
  • the site can be fully feedback at once, or it can be divided into multiple feedbacks.
  • the resource scheduling message and the polling scheduling message may be carried in different frames, or may be carried in the same frame of the same data packet.
  • the specific manner of combining the specific polling scheduling message and the resource scheduling message is not limited in the embodiment of the present invention.
  • the structure of the combined frames can be multiplexed with existing frame structures, for example, to extend and multiplex existing trigger frames or beamforming report poll frames, and to redesign new frame structures that satisfy the function.
  • the resource scheduling message and the polling scheduling message may be carried in a trigger frame or a BF Report Poll frame of the same data packet, and the multiplexing of the existing trigger frame or the BF Report Poll frame is described in the description of FIG. 1B. Avoid repetition and we will not go into details here.
  • FIG. 6 is a schematic flowchart of a method for transmitting channel state information according to still another embodiment of the present invention.
  • the method of Figure 6 can be performed by an access point.
  • the station STA sends a feedback indication message, a high-efficiency long training sequence, and a first resource scheduling message to the station STA.
  • the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP, and the high-efficiency long training sequence is used to determine the target STA.
  • the first channel scheduling information is used to indicate a first communication resource used by the target STA to feed back the second channel state information, and the second channel state information is part of the first channel state information.
  • the segment information in the first channel state information, the third channel state information is part or all after the second channel state information is removed, and the third resource scheduling message is used to indicate that the target STA feeds back the third channel state.
  • the embodiment of the present invention sends a resource scheduling message, a feedback indication message, and a high to an address by using an access point.
  • the effective length training sequence is used to schedule transmission of channel state information by multiple stations, and the station can continue to send the polling scheduling message and the resource scheduling message by feeding back the channel state information to the access point, so as to trigger the station to continue to connect.
  • Incoming point feedback is not successfully fed back channel state information, which can avoid resource waste caused by one-time feedback, and can improve the transmission efficiency of channel state information.
  • the method for transmitting the channel state information according to the embodiment of the present invention may be performed by the access point, and the corresponding process performed by the access point after the embodiment of FIG. 5 may be performed.
  • the access point may be performed by the access point, and the corresponding process performed by the access point after the embodiment of FIG. 5 may be performed.
  • details are not described herein again.
  • the resource scheduling message and the polling scheduling message may be carried in different frames, or may be carried in the same frame of the same data packet.
  • the specific manner of combining the specific polling scheduling message and the resource scheduling message is not limited in the embodiment of the present invention.
  • the structure of the combined frames can be multiplexed with existing frame structures, for example, to extend and multiplex existing trigger frames or beamforming report poll frames, and to redesign new frame structures that satisfy the function.
  • the resource scheduling message and the polling scheduling message may be carried in a trigger frame or a BF Report Poll frame of the same data packet, and the multiplexing of the existing trigger frame or the BF Report Poll frame is described in the description of FIG. 1B. Avoid repetition and we will not go into details here.
  • the following describes in detail how the access point schedules multiple sites for feedback transmission of channel state information in conjunction with the specific examples of FIGS. 7-10.
  • the following is exemplified only by the case where the access point simultaneously schedules two sites or three sites, but the present invention is not limited thereto, and the number of sites may be two or more.
  • FIG. 7A and 7B are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to an embodiment of the present invention.
  • Figures 7A and 7B illustrate embodiments of the invention from two different angles, respectively.
  • FIG. 7A illustrates the interaction of information or messages between the access point and the site
  • FIG. 7B illustrates the interaction of the frame between the access point and the site, which is essentially the same, and the frame carries information or messages.
  • the AP sends a first resource scheduling message, a feedback indication message, and a high-efficiency long training sequence to the STA.
  • the STA here may be STA1, STA2, and STA3 in FIG. 7, and may also include other STAs, which are not shown here.
  • the access point may broadcast and transmit a combined frame of the NDPA, the NDP, and the trigger frame to the multiple sites, and use the field in the combined frame to carry the first resource scheduling message, the feedback indication message, and the high-efficiency long training sequence to schedule multiple sites. Give feedback.
  • the embodiment of the present invention does not limit the manner in which the NDPA, the NDP, and the trigger frame are combined, and may be combined with the third and then combined with the third. It is also possible to combine three together. For a specific combination, reference may be made to the description in the part of FIG. 1B, and details are not described herein again.
  • serial numbers 701 in the embodiment of the present invention, indicating that the access point can simultaneously broadcast and transmit the combined frames of the NDPA, NDP, and trigger frames to multiple sites.
  • the STA feeds back an acknowledgement message or channel state information to the AP.
  • the station may receive the first resource scheduling message, the feedback indication message, and the high-efficiency long training sequence sent by the access point, may estimate the channel state information, and may independently determine to feed back an acknowledgement message to the access point, indicating that the first resource has been received. Scheduling messages, feedback indication messages, and efficient long training sequences.
  • the site can also determine the feedback channel status information autonomously. In general, when the site does not support immediate feedback, an acknowledgment message (eg, Site 1 and Site 2) may be first fed back to the access point. When the station supports immediate feedback, channel status information can be fed back to the access point.
  • serial numbers 702 there are three serial numbers 702 in the embodiment of the present invention.
  • the same serial number indicates that multiple stations can simultaneously feed back to the access point.
  • target site 3 may feed back channel state information to the access point, and target sites 1 and 2 may feed back an acknowledgement message to the access point.
  • the access point may continue to send the resource scheduling message and the polling scheduling message to the station, so as to schedule the station to continue to feed back the channel state information that is not successfully fed back.
  • the embodiment of the present invention only exemplifies the case that the site 3 feeds back all the channel state information at one time.
  • the AP sends a second resource scheduling message to the STA.
  • the access point may continue to send the second resource scheduling message to the station after receiving the acknowledgement message to trigger the station to feed back the channel state information to the access point.
  • the STA returns channel state information to the AP.
  • the station may feed back some or all of the channel state information to the access point by using the communication resource indicated by the resource scheduling message.
  • Site 1 or 2 can return all channel state information to the access point, and the process ends.
  • the feedback process at different sites can vary.
  • station 1 may feed back all channel state information, such that the flow ends; and station 2 may feed back partial channel state information.
  • the state information of the feedback part of both the stations 1 and 2 is taken as an example for exemplary description.
  • the AP sends a third resource scheduling message and a polling scheduling message to the STA.
  • the access point may continue to send the third resource scheduling message and the polling scheduling message to the station, so that the station (for example, station 1 and station 2) continues to provide feedback. Channel status information that was not successfully fed back.
  • the STA returns, to the AP, channel state information that is not successfully fed back.
  • the station may continue to feed back the channel state information that is not successfully fed back to the access point.
  • the channel state information that is not successfully fed back in the embodiment of the present invention may be channel state information that the station has not fed back to the access point, or may be channel state information that the station has feedback to the access point but the access point does not correctly receive.
  • the station may perform feedback of channel state information according to the feedback fragment retransmission bit bitmap field.
  • the access point only sends the trigger frame, it indicates that the access point has not received any information from the site before, and the station can transmit from the first fragment of the channel state information to the access point.
  • STA1, STA2, and STA3 may be any one of the stations.
  • the process performed by STA2 may be performed by STA1.
  • the process performed by STA1 may also be performed by STA2.
  • the present invention is only for convenience of description, and the stations are distinguished by STA1, STA2, and STA3, and the scope of protection of the present invention is not limited.
  • the steps shown in the flowchart of Fig. 7B correspond one-to-one with the steps shown in the flowchart of Fig. 7A.
  • the above-mentioned feedback indication message, the high-efficiency long training sequence and the resource scheduling message, and the polling scheduling message may be carried in the frame structure in FIG. 7B.
  • the station can determine the feedback beamforming report or the acknowledgement frame autonomously after receiving the combined frame.
  • the site 3 feeds back the beamforming report at one time, the feedback process of the site 3 ends; when the site 3 non-one-time feedback is completed, the access point can continue to trigger by transmitting the beamforming report to the combined frame of the polling frame and the trigger frame.
  • the station feeds back the channel state information that was not successfully transmitted, which is not shown in this embodiment.
  • stations 1 and 2 decide not to feed back immediately, they can first feed back the confirmation frame.
  • the channel state information is fed back after receiving the trigger frame sent by the access point. Subsequently, if there is channel state information that is not successfully fed back, the access point may continue to transmit the combined frame of the beamforming report polling frame and the trigger frame, and the triggering station continues to feed back the channel state information until all feedback is completed.
  • FIG. 7 mainly shows that after the AP sends a resource scheduling message, a feedback indication message, and a high-efficiency long training sequence to the STA, the STA may determine the feedback channel state information or the acknowledgement message autonomously. When the site cannot immediately feed back the channel state information, the acknowledgment message may be fed back, and the STA further reports the channel state information and then feeds back the channel state information, so that the subsequent process can be efficient. Flexible transmission of channel state information.
  • FIG. 8A and FIG. 8B are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to another embodiment of the present invention.
  • Figures 8A and 8B illustrate embodiments of the invention from two different angles, respectively.
  • FIG. 8A illustrates the interaction of information or messages between the access point and the site
  • FIG. 8B illustrates the interaction of the frame between the access point and the site, which is essentially the same, and the frame carries information or messages.
  • the AP sends a feedback indication message and a high-efficiency long training sequence to the STA.
  • the STA here may be STA1 and STA2 in FIG. 7, and may also include other STAs, which are not shown here.
  • the access point may send a feedback indication message and a high efficiency long training sequence to the station to cause the station to estimate the channel.
  • the indication message may carry an indication message to indicate whether the feedback is immediately performed. For example, when the indication information indicates that the feedback is not immediate, the station may not immediately perform feedback of the channel state information to ensure that the site with insufficient capability for immediate feedback may feed back channel state information for a period of time.
  • the AP sends a first resource scheduling message to the STA.
  • the access point may send the first resource scheduling message to the station, and send the first resource scheduling message after sending the feedback indication message and the high efficiency long training sequence, that is, step 802 after step 801, so that the station may receive the feedback indication message. And when the capability of the long training sequence is insufficient to immediately feed back the channel state information, the channel state information is fed back to the access point after receiving the first resource scheduling message.
  • the STA returns channel state information to the AP.
  • the site After the site can receive the feedback indication message and the high-efficiency long training sequence, the feedback is not immediately performed.
  • part or all of the channel state information is fed back to the access point.
  • Site 1 and Site 2 may feed back some or all of the channel state information to the access point.
  • the embodiment of the present invention is only exemplified by taking part of the channel state information of both the station 1 and the station 2 as an example.
  • the AP sends a second resource scheduling message and a polling scheduling message to the STA.
  • the access point may continue to schedule channel state information that is not successfully fed back to the station (for example, station 1 and station 2). Of course, the scheduling may also be continued here. One or more times until full feedback is complete.
  • the STA returns, to the AP, channel state information that is not successfully fed back.
  • the station may feed back the channel state information that is not successfully fed back to the access point.
  • the channel state information that is not successfully fed back in the embodiment of the present invention may be channel state information that the station has not fed back to the access point, or may be channel state information that the station has feedback to the access point but the access point does not correctly receive.
  • the station may perform feedback of channel state information according to the feedback fragment retransmission bit bitmap field.
  • the access point only sends the trigger frame, it indicates that the access point has not received any information from the site before, and the station can transmit from the first fragment of the channel state information to the access point.
  • STA1 and STA2 can be any one of the stations.
  • the process performed by STA2 can be performed by STA1.
  • the process performed by STA1 can also be performed by STA2.
  • the present invention is only for convenience of description, and the stations are distinguished by STA1 and STA2, and the scope of protection of the present invention is not limited.
  • the steps shown in the flowchart of Fig. 8B correspond one-to-one with the steps shown in the flowchart of Fig. 8A.
  • the above-mentioned feedback indication message, the high-efficiency long training sequence and the resource scheduling message, and the polling scheduling message may be carried in the frame structure in FIG. 8B.
  • Site 1 and Site 2 feed back the beamforming report after receiving the trigger frame.
  • the access point can then continue to schedule channel state information that was not successfully fed back by continuing to transmit a combined frame of the beamforming report polling frame and the triggering frame.
  • FIG. 8 mainly introduces, when the AP determines whether the STA is required to immediately perform feedback of the channel state information, and sends a feedback indication message and a high-efficiency long training sequence to the STA, and then sends a resource scheduling message, and the site receives the feedback indication message, the high-efficiency long training sequence, and the resource scheduling. Subsequent flow of feedback channel status information after the message.
  • the AP determines the sequence of sending the feedback indication message, the high-efficiency long training sequence, and the resource scheduling message according to whether the STA supports the immediate feedback, that is, the AP determines whether the STA is required to immediately feed back the channel state information, so that the entire feedback process is insufficient in some sites to provide immediate feedback.
  • the channel state information can be transmitted efficiently and flexibly in the subsequent process.
  • FIG. 9A and FIG. 9B are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to still another embodiment of the present invention.
  • Figures 9A and 9B illustrate embodiments of the invention from two different angles, respectively.
  • FIG. 9A illustrates the interaction of information or messages between the access point and the site
  • FIG. 9B illustrates the interaction of the frame between the access point and the site, which is substantially the same, and carries information in the frame. Or a message.
  • the AP sends a first resource scheduling message, a feedback indication message, and a high-efficiency long training sequence to the STA.
  • the AP sends a first resource scheduling message, a feedback indication message, and a high-efficiency long training sequence to the STA, where the resource scheduling message or the feedback indication message may carry the indication message.
  • the STA here may be STA1 and STA2 in FIG. 9, and may also include other STAs, which are not shown here.
  • the station may not immediately perform feedback of the channel state information to ensure that the site with insufficient capability for immediate feedback may feed back the channel state information for a period of time.
  • the STA returns an acknowledgement message to the AP.
  • the station After receiving the indication information, the station determines that immediate feedback is not required, and may first feed back an acknowledgement message to the access point, indicating that the first resource scheduling message, the feedback indication message, and the high-efficiency long training sequence have been received.
  • the AP sends a second resource scheduling message to the STA.
  • the access point may send a second resource scheduling message to the station after a period of time to schedule the station to perform feedback on the channel state information.
  • the STA returns channel state information to the AP.
  • the station may feed back some or all of the channel state information to the access point by using the communication resource indicated by the second resource scheduling message.
  • the embodiment of the present invention only provides an example of the case where the site 1 and the site 2 feed back part of the channel state information to the access point.
  • the AP sends a third resource scheduling message and a polling scheduling message to the STA.
  • the access point may continue to schedule the channel state information that is not successfully fed back to the station 1 and the station 2. Of course, the scheduling may be one or more times. Until the full feedback is completed.
  • the STA returns, to the AP, channel state information that is not successfully fed back.
  • Site 1 and Site 2 may continue to feed back to the access point channel state information that was not successfully fed back.
  • STA1 and STA2 can be any one of the stations.
  • the process performed by STA2 can be performed by STA1.
  • the process performed by STA1 can also be performed by STA2.
  • the present invention is only for convenience of description, and the stations are distinguished by STA1 and STA2, and the scope of protection of the present invention is not limited.
  • the steps shown in the flowchart of Fig. 9B correspond one-to-one with the steps shown in the flowchart of Fig. 9A.
  • the above-mentioned feedback indication message, high-efficiency long training sequence, and resource adjustment may be carried in the frame structure in FIG. 9B.
  • Degree messages and polling schedule messages When the access point indicates non-immediate feedback to both stations 1 and 2, Site 1 and Site 2 feed back the acknowledgement frame. The access point can then continue to send beamforming reports that trigger the frame scheduling site. Among them, beamforming is reported as a carrier of channel state information. Subsequently, the access point may continue to schedule channel state information that is not successfully fed back by continuing to transmit a combined frame of the beamforming report polling frame and the trigger frame.
  • the channel state information that is not successfully fed back in the embodiment of the present invention may be channel state information that the station has not fed back to the access point, or may be channel state information that the station has feedback to the access point but the access point does not correctly receive.
  • the station may perform feedback of channel state information according to the feedback fragment retransmission bit bitmap field.
  • the access point only sends the trigger frame, it indicates that the access point has not received any information from the site before, and the station can transmit from the first fragment of the channel state information to the access point.
  • FIG. 9 mainly introduces, after the AP determines whether the STA is required to immediately perform feedback of the channel state information, and sends a feedback indication message, a high-efficiency long training sequence, and a resource scheduling message to the STA, and after the station receives the feedback indication message, the high-efficiency long training sequence, and the resource scheduling message. Because the AP indicates non-immediate feedback, the AP feeds back the acknowledgement message to the STA, and how the subsequent AP triggers the STA to feed back the channel state information, so that the entire feedback process can still be in the subsequent process when the partial site capability is insufficient to immediately feed back the channel state information. Efficient and flexible transmission of channel state information.
  • FIG. 10A, FIG. 10B and FIG. 10C are interaction diagrams of an access point scheduling multiple stations for channel state information transmission according to still another embodiment of the present invention.
  • 10A and 10B, 10C illustrate embodiments of the present invention from two different angles, respectively.
  • FIG. 10A illustrates the interaction of information or messages between the access point and the site
  • FIG. 10B and FIG. 10C illustrate the interaction of the frame between the access point and the site, which is substantially the same, and the frame carries information or Message.
  • the AP sends a first resource scheduling message, a feedback indication message, and a high-efficiency long training sequence to the STA.
  • the STA here may be STA1 and STA2 in FIG. 10, and may also include other STAs, which are not shown here.
  • the access point may broadcast and transmit a combined frame of the NDPA, the NDP, and the trigger frame to the multiple sites, and use the field in the combined frame to carry the first resource scheduling message, the feedback indication message, and the high-efficiency long training sequence to schedule multiple sites.
  • the binding frame includes indication information for indicating whether to immediately feed back, for example, the indication information may be carried in an NDPA or trigger frame.
  • the STA returns a channel status information or an acknowledgement message to the AP.
  • the station may receive the first resource scheduling message, the feedback indication message, and the high-efficiency long training sequence sent by the access point, may estimate the channel state information, and may feed back the channel state information or the acknowledgement message to the access point.
  • the station may feed back channel state information to the access point.
  • the station may first feed back an acknowledgement message indicating that the first resource scheduling message, the feedback indication message, and the efficient long training sequence have been received.
  • the indication information of the access point may indicate that all stations perform immediate feedback or non-immediate feedback, and may also separately indicate to each station, that is, instruct some of the stations to perform immediate feedback, and some sites perform non-immediate feedback.
  • the station may feed back channel state information or a confirmation message to the access point according to the indication.
  • the AP sends a second resource scheduling message and a polling scheduling message to the STA.
  • the access point may continue to send the second resource scheduling message and the polling scheduling message to the station to schedule the station to continue to feed back the channel state information until the complete feedback is successful.
  • the STA returns, to the AP, channel state information that is not successfully fed back.
  • the station After receiving the second resource scheduling message and the polling scheduling message sent by the access point, the station continues to feed back the channel state information that is not successfully fed back to the access point.
  • STA1 and STA2 can be any one of the stations.
  • the process performed by STA2 can be performed by STA1.
  • the process performed by STA1 can also be performed by STA2.
  • the present invention is only for convenience of description, and the stations are distinguished by STA1 and STA2, and the scope of protection of the present invention is not limited.
  • FIG. 10B is a scenario where the access point indicates immediate feedback from all stations.
  • the access point indicates immediate feedback to both stations 1 and 2
  • Site 1 and Site 2 immediately feed back the beamforming report.
  • beamforming is reported as a carrier of channel state information.
  • the access point may also continue to schedule channel state information that is not successfully fed back by continuing to transmit a combined frame of the beamforming report poll frame and the trigger frame.
  • FIG. 10C is a scenario in which the access point indicates that some sites perform non-immediate feedback, indicating that some sites perform immediate feedback.
  • Site 1 may feed back an acknowledgment message when the access point indicates that Site 1 is not immediately fed back.
  • Site 2 can feed back the beamforming report.
  • beamforming is reported as a carrier of channel state information.
  • the access point may also continue to schedule channel state information that is not successfully fed back by continuing to transmit a combined frame of the beamforming report poll frame and the trigger frame.
  • Figure 10 mainly shows that the AP sends a feedback indication message to the STA, an efficient long training sequence, and resources.
  • the channel state information or the acknowledgement message may be fed back according to the indication of the AP.
  • the subsequent AP triggers the STA to continue to transmit the unsuccessful feedback channel state information, so that the entire feedback process may first feed back part of the channel state information when the STA feeds back the channel state information, and continue to feed back the channel state information of the other part after receiving the AP.
  • the resource scheduling message the channel state information of the unsuccessful feedback is continuously fed back until the AP completely receives the channel state information of the STA.
  • the access point may perform immediate or non-immediate feedback for different sites, and the execution process of the site is performed according to the instructions of the access point, and will not be described one by one.
  • FIG. 11 is a structural diagram of a combined frame of a beamforming report polling frame and a trigger frame based on a trigger frame design according to an embodiment of the present invention.
  • the combined frame of FIG. 11 is based on a trigger frame design, and the original trigger frame can be multiplexed.
  • the combined frame of FIG. 11 includes a frame control field, a beamforming report polling type indication field, a resource allocation reuse indication field, a station identification field, a resource allocation information field, and a feedback fragment retransmission bit bitmap field.
  • the frame control field may be used to indicate that the frame can be used for resource scheduling.
  • the beamforming report polling type indication field can be used to indicate that the type of frame can be used to poll the beamforming report.
  • the feedback slice retransmission bit bitmap field can be used to indicate which fragments are transmitted.
  • the resource allocation information field may include a resource scheduling message.
  • the resource allocation reuse indication may be used to indicate whether the communication resource indicated by the frame is the same as the communication resource used in the previous transmission. When the communication resource indicated by the frame is the same as the communication resource used in the previous transmission, the resource allocation information field may be omitted, and the communication resource at the time of the last transmission may be directly used for transmission.
  • the communication resource included in the resource scheduling message included in the resource allocation information field in the frame may be used for transmission.
  • the Site Identification field is used to indicate the site that needs to feed back channel state information to the access point.
  • FIG. 12 is a structural diagram of a combined frame of a beamforming report polling frame and a trigger frame based on a beamforming report polling frame design according to another embodiment of the present invention.
  • the combined frame of Figure 12 is designed based on a beamforming report polling frame, and the original beamforming report polling frame can be multiplexed.
  • the combined frame of FIG. 12 includes a frame control field, a duration field, a receiving address field, a sending address field, a feedback fragment retransmission bit bitmap field, an associated address field, a feedback fragment retransmission bit bitmap field of each station, and a school Check the sequence field.
  • the frame control field can be used to indicate that the frame can be used for polling of the beamforming report.
  • the associated address field is used to indicate the identifier of the site being polled.
  • the feedback slice retransmission bit bitmap field in the original beamforming report polling frame field may be used to indicate that the type of the frame is a combined frame of the beamforming report polling frame and the trigger frame.
  • the resource allocation information field may include a resource scheduling message.
  • the resource allocation reuse indication may be used to indicate whether the communication resource indicated by the frame is the same as the communication resource used in the previous transmission. When the communication resource indicated by the frame is the same as the communication resource used in the previous transmission, the resource allocation information field may be omitted, and the communication resource at the time of the last transmission may be directly used for transmission. When the communication resource indicated by the frame is different from the communication resource used in the previous transmission, the communication resource included in the resource scheduling message included in the resource allocation information field in the frame may be used for transmission.
  • FIG. 13 is a schematic diagram of a station for transmitting channel state information according to an embodiment of the present invention.
  • the station of FIG. 13 includes a first receiving unit 11 and a first transmitting unit 12.
  • the first receiving unit 11 is configured to receive a feedback indication message, a high-efficiency long training sequence, and a first resource scheduling message sent by the access point AP.
  • the feedback indication message is used to indicate at least two target stations STA that need to feed back channel state information to the AP.
  • the efficient long training sequence is used to determine the first channel state information of the target STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the feedback indication message, the high efficiency long training sequence, and the first resource scheduling message.
  • the first sending unit 12 is configured to send the acknowledgement message to the AP by using the first communication resource when parsing the feedback indication message received by the receiving unit and determining to belong to the target STA.
  • the acknowledgement message is used to indicate that the feedback indication message, the efficient long training sequence, and the first resource scheduling message have been received.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the station accesses the channel.
  • Point feedback confirmation message which can avoid the waste of resources caused by some sites not supporting immediate feedback, thereby improving the transmission efficiency of channel state information.
  • the sending unit is specifically configured to: when the target STA does not support immediate feedback of the first channel state information, receive the feedback indication message, the high-efficiency long training sequence, and the X frame of the first resource scheduling message. After the interval XIFS, an acknowledgement message is sent to the AP through the first communication resource.
  • the site further includes a first determining unit.
  • the first determining unit is configured to determine the first channel state information according to the high efficiency long training sequence.
  • the station further includes a second receiving unit and a second sending unit.
  • the second receiving unit is configured to receive a second resource scheduling message sent by the AP.
  • the second resource scheduling message is used to indicate a second communication resource used by the STA when feeding back the second channel state information.
  • the second sending unit is configured to send second channel state information to the AP by using the second communication resource.
  • the second channel state information is part or all of the first channel state information.
  • the station further includes a third receiving unit and a third sending unit.
  • the third receiving unit is configured to receive the first polling scheduling message and the third resource scheduling message sent by the AP.
  • the first polling scheduling message is used by the AP to request third channel state information from the STA, where the first polling scheduling message includes fragment information of the third channel state information in the first channel state information, and third channel state information. And deleting part or all of the second channel state information for the first channel state information, where the third resource scheduling message is used to indicate the third communication resource used by the STA to feed back the third channel state information.
  • the third sending unit is configured to send third channel state information to the AP by using the third communication resource.
  • the first polling scheduling message and the third resource scheduling message are carried in the same data packet.
  • the first polling scheduling message and the third resource scheduling message are carried in a trigger trigger frame of the same data packet.
  • the trigger frame includes a first beamforming report polling type indication field and a first feedback fragment retransmission bit bitmap field, and the trigger frame further includes at least one of a first resource allocation information field and a first resource allocation reuse indication field.
  • the third resource scheduling message is located in the first resource allocation information field, where the first polling scheduling message is located in the first feedback fragment retransmission bit bitmap field, and the first resource allocation reuse indication field is used to indicate the third resource scheduling message and Whether the second resource scheduling message is the same.
  • the trigger frame further includes an identifier of the target STA. segment.
  • the first polling scheduling message and the third resource scheduling message are carried in a beamforming report polling BF Report Poll frame of the same data packet, where the BF Report Poll frame may include a receiving address field, a second feedback fragment retransmission bit bitmap field and a third feedback fragment retransmission bit bitmap field, and the BF Report Poll frame may further include at least one of a second resource allocation information field and a second resource allocation reuse indication field
  • the third resource scheduling message is located in the second resource allocation information field, where the first polling scheduling message is located in the third feedback fragment retransmission bit bitmap field, and the indication information of the third resource scheduling message is located in the second resource allocation reuse indication. Field.
  • the BF Report Poll frame further includes an identifier field of the target STA.
  • the BF Report Poll frame is used as a polling frame for triggering multi-user channel state information transmission in any of the following manners: a receiving address field, a second feedback fragment retransmission bit The length of the graph field, BF Report Poll frame.
  • the station further includes a second determining unit, where the second determining unit is configured to determine that the STA does not support immediate feedback of the first channel state information according to at least one of the following conditions: the STA's own capability Insufficient, the priority of the STA buffering the first channel state information is lower than the first threshold, and the size of the resource block of the first communication resource is less than the threshold.
  • a station for transmitting channel state information according to an embodiment of the present invention may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the station and the other operations and/or functions described above are respectively implemented.
  • the corresponding flow of the method shown in FIG. 1B will not be repeated here for brevity.
  • FIG. 14 is a schematic diagram of an access point for transmitting channel state information according to another embodiment of the present invention.
  • the access point of FIG. 14 includes a first transmitting unit 21 and a first receiving unit 22.
  • the first sending unit 21 is configured to send a feedback indication message, a high-efficiency long training sequence, and a first resource scheduling message to the station STA.
  • the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information.
  • the efficient long training sequence is used to determine the first channel state information of the target STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the feedback indication message, the high efficiency long training sequence, and the first resource scheduling message.
  • the first receiving unit 22 is configured to receive the acknowledgement message sent by the first communication resource indicated by the first resource scheduling message sent by the target STA by using the first sending unit. Confirmation message is used to indicate the target A feedback indication message, a high efficiency long training sequence, and a first resource scheduling message have been received.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit the channel state information, and the site feeds back the confirmation message to the access point, so that part can be avoided.
  • the site does not support the waste of resources caused by immediate feedback, thereby improving the transmission efficiency of channel state information.
  • the first receiving unit is specifically configured to receive, by the target STA that does not support immediate feedback channel state information, an X frame spacing of the feedback indication message, the high efficiency long training sequence, and the first resource scheduling message.
  • the access point further includes a second sending unit and a second receiving unit.
  • the second sending unit is configured to send a second resource scheduling message to the target STA.
  • the second resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the second channel state information.
  • the second receiving unit is configured to receive second channel state information that is sent by the target STA by using the second communication resource.
  • the second channel state information is part or all of the first channel state information.
  • the access point further includes a third sending unit and a third receiving unit.
  • the third sending unit is configured to send the first polling scheduling message and the third resource scheduling message to the target STA.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information in which the third channel state information is in the first channel state information.
  • the third channel state information is part or all after the second channel state information is removed from the first channel state information, and the third resource scheduling message is used to indicate the third communication resource used when the target STA feeds back the third channel state information.
  • the third receiving unit is configured to receive third channel state information that is sent by the target STA by using the third communication resource.
  • the first polling scheduling message and the third resource scheduling message are carried in the same data packet.
  • the first polling scheduling message and the third resource scheduling message are carried in a trigger trigger frame of the same data packet.
  • the trigger frame includes a first beamforming report polling type indication field and a first feedback fragment retransmission bit bitmap field, and the trigger frame further includes at least one of a first resource allocation information field and a first resource allocation reuse indication field.
  • the third resource scheduling message is located in the first resource allocation information field, where the first polling scheduling message is located in the first feedback fragment retransmission bit bitmap field, and the first resource allocation reuse indication field is used to indicate the third resource scheduling message and the second Whether the resource scheduling messages are the same.
  • the trigger frame further includes an identifier field of the target STA.
  • the first polling scheduling message and the third resource scheduling message are carried in a beamforming report polling BF Report Poll frame of the same data packet.
  • the BF Report Poll frame may include a receive address field, a second feedback slice retransmission bit bitmap field, and a third feedback slice retransmission bit bitmap field.
  • the BF Report Poll frame may further include at least one of a second resource allocation information field and a second resource allocation reuse indication field.
  • the third resource scheduling message is located in the second resource allocation information field, where the first polling scheduling message is located in the third feedback fragment retransmission bit bitmap field, and the indication information of the third resource scheduling message is located in the second resource allocation reuse indication field.
  • the BF Report Poll frame further includes an identifier field of the target STA.
  • the BF Report Poll frame is used to trigger a polling frame for triggering multi-user channel state information transmission in any of the following manners: a receiving address field, and a second feedback fragment retransmission.
  • Bit bitmap field length of the BF Report Poll frame.
  • the target STA that does not support the immediate feedback of the first channel state information includes at least one of the following conditions: the target STA has insufficient capability, and the target STA caches the first channel state.
  • the priority of the information is lower than the first threshold and the size of the resource block of the first communication resource is less than the threshold.
  • An access point for transmitting channel state information may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the access point and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 2, and are not described herein for brevity.
  • FIG. 15 is a schematic diagram of a station for transmitting channel state information according to still another embodiment of the present invention.
  • the station of FIG. 15 includes a first receiving unit 31 and a first transmitting unit 32.
  • the first receiving unit 31 is configured to receive a first resource scheduling message, a first feedback indication message, and a first high-efficiency long training sequence that are sent by the access point AP according to the first indication information.
  • the first feedback indication message is used to indicate at least two target stations STA that need to feed back channel state information to the AP.
  • the first resource scheduling message or the first feedback indication message includes first indication information.
  • the first indication information is used to indicate whether the target STA immediately feeds back channel state information.
  • the first efficient long training sequence is used to determine first channel state information of the target STA.
  • the first resource scheduling message is used to indicate that the target STA feeds back The first communication resource used when the two channel status information or the acknowledgment message is used.
  • the second channel state information is part or all of the first channel state information.
  • the acknowledgement message is used to indicate that the first feedback indication message, the first efficient long training sequence, and the first resource scheduling message have been received.
  • the first sending unit 32 is configured to perform channel estimation according to the high-efficiency long training sequence received by the first receiving unit, when determining, according to the feedback indication message received by the first receiving unit, to determine the first channel state information, and pass the first The first communication resource indicated by the first resource scheduling message received by the receiving unit sends the second channel state information or the acknowledgement message to the AP.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the access point can indicate whether the site immediately feedbacks, and the site can be connected according to the site.
  • the indication of the ingress point feeds back the channel state information or the confirmation message to the access point, so that the waste of resources caused by the partial feedback not being supported by the partial site can be avoided, and the transmission efficiency of the channel state information can be improved.
  • the first receiving unit is specifically configured to: when the first indication information indicates that the STA does not immediately feed back the channel state information, receive the first feedback indication message sent by the AP and the first high-efficiency long
  • the first resource scheduling message is received after the training sequence X frame spacing XIFS.
  • the first feedback indication message includes first indication information.
  • the first sending unit is configured to: after receiving the first resource scheduling message X frame spacing XIFS, send the first communication resource to the AP according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence by using the first communication resource Two-channel status information.
  • the station further includes a second receiving unit and a second sending unit.
  • the second receiving unit is configured to receive a first polling scheduling message and a second resource scheduling message sent by the AP.
  • the first polling scheduling message is used to request third channel state information from the STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed, and the second resource scheduling message is used to indicate the second communication resource used by the STA to feed back the third channel state information.
  • the second sending unit is configured to send third channel state information to the AP by using the second communication resource.
  • the first sending unit is specifically configured to: after the first indication information indicates that the STA does not immediately feed back channel state information, after sending the X frame spacing XIFS of the first resource scheduling message, A confirmation message is sent to the AP through the first communication resource.
  • the site further includes a third receiving unit and a third sending Send the unit.
  • the third receiving unit is configured to receive a third resource scheduling message sent by the AP.
  • the third resource scheduling message is used to indicate a third communication resource used by the STA when feeding back the fourth channel state information.
  • the third sending unit is configured to send fourth channel state information by using the third communication resource, where the fourth channel state information is part or all of the first channel state information.
  • the station further includes a fourth receiving unit and a fourth sending unit.
  • the fourth receiving unit is configured to receive a second polling scheduling message and a fourth resource scheduling message sent by the AP.
  • the second polling scheduling message is used to request the fifth channel state information from the STA.
  • the second polling scheduling message includes segment information of the fifth channel state information in the first channel state information.
  • the fifth channel state information is part or all of the first channel state information after the fourth channel state information is removed.
  • the fourth resource scheduling message is used to indicate a fourth communication resource used when the target STA feeds back the fifth channel state information.
  • the fourth sending unit is configured to send the fifth channel state information to the AP by using the fourth communication resource.
  • the first sending unit is specifically configured to: when the first indication information indicates that the STA immediately feeds back channel state information, after transmitting the X frame spacing XIFS of the first resource scheduling message, pass the first The communication resource sends the second channel state information to the AP.
  • the station further includes a fifth receiving unit and a fifth sending unit.
  • the fifth receiving unit is configured to receive a third polling scheduling message and a fifth resource scheduling message sent by the AP.
  • the third polling scheduling message is used to request the sixth channel state information from the STA.
  • the third polling scheduling message includes segment information of the sixth channel state information in the first channel state information.
  • the sixth channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the fifth resource scheduling message is used to indicate a fifth communication resource used by the target STA to feed back the sixth channel state information.
  • the fifth sending unit is configured to send the sixth channel state information to the AP by using the fifth communication resource.
  • the first indication information includes a field for indicating a time when the STA feeds back the channel state information.
  • the first indication information includes a field for indicating all STAs or respectively indicating whether each STA immediately feeds back channel state information.
  • the first sending unit when the first sending unit is configured to send the first feedback indication message and the first high-efficiency long training sequence, and then send the first resource scheduling message, the first indication information is used to indicate the non- Feedback now.
  • the first indication information is used to indicate non-immediate feedback when the first threshold or the number of spatial streams used by the resource block in the first communication resource is less than the second threshold.
  • the first indication information is used to indicate immediate feedback when the size of the resource block in the first communication resource is greater than or equal to the first threshold or the number of spatial streams used by the resource block in the first communication resource is greater than or equal to the second threshold.
  • the first feedback indication message, the first high-efficiency long training sequence, and the first resource scheduling message are in different frames.
  • the first polling scheduling message and the second resource scheduling message are in the same data packet; or the second polling scheduling message and the fourth resource scheduling message are in the same data packet; or the third polling scheduling message and the fifth resource scheduling message are in the same data packet.
  • a station for transmitting channel state information according to an embodiment of the present invention may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the station and the other operations and/or functions described above are respectively implemented. The corresponding flow of the method shown in FIG. 3 will not be repeated here for brevity.
  • FIG. 16 is a schematic diagram of an access point for transmitting channel state information according to still another embodiment of the present invention.
  • the access point of FIG. 16 includes a determining unit 41, a first transmitting unit 42, and a first receiving unit 43.
  • the determining unit 41 is configured to determine first indication information, where the first indication information is used to indicate whether at least two target stations STA that need to feed back channel state information to the access point AP immediately feed back channel state information.
  • the first sending unit 42 is configured to send, according to the first indication information determined by the determining unit, the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence to the target STA.
  • the first resource scheduling message or the first feedback indication message includes first indication information.
  • the first feedback indication message is used to indicate at least two target stations STA that need to feed back channel state information to the AP.
  • the first efficient long training sequence is used to determine first channel state information of the target STA.
  • the first resource scheduling message is used to indicate the first communication resource used by the target STA to feed back the second channel state information or the confirmation message.
  • the second channel state information is part or all of the first channel state information.
  • the acknowledgement message is used to indicate that the first feedback indication message, the first efficient long training sequence, and the first resource scheduling message have been received.
  • the first receiving unit 43 is configured to receive, by the first STA, the first resource scheduling message, the first feedback indication message, and the second channel state information or the acknowledgement message sent by the first high efficiency long training sequence by using the first communication resource. .
  • the embodiment of the present invention sends a resource scheduling message, a feedback indication message, and a high to an address by using an access point.
  • the effective length training sequence is used to schedule transmission of channel state information by multiple stations, and the access point can indicate whether the station immediately feeds back.
  • the station can feed back the channel state information or the confirmation message to the access point according to the indication of the access point, which can avoid Some sites do not support the waste of resources caused by immediate feedback, which in turn can improve the transmission efficiency of channel state information.
  • the first sending unit is specifically configured to: when the first indication information indicates that the target STA does not immediately feed back the channel state information, send the first feedback indication message and the first high-efficiency long training sequence X.
  • the first resource scheduling message is sent after the frame spacing XIFS.
  • the first feedback indication message includes the first indication information.
  • the first receiving unit is configured to: after receiving the X frame spacing XIFS of the first resource scheduling message, receive, by the STA, the second resource that is sent by the first communication resource according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence. Channel status information.
  • the access point further includes a second sending unit and a second receiving unit.
  • the second sending unit is configured to send the first polling scheduling message and the second resource scheduling message.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed, and the second resource scheduling message is used to indicate the second communication resource used by the target STA to feed back the third channel state information.
  • the second receiving unit is configured to receive the third channel state information that is sent by the target STA by using the second communication resource.
  • the first receiving unit is specifically configured to: when the first indication information indicates that the target STA does not immediately feed back the channel state information, receive the target after sending the X frame spacing XIFS of the first resource scheduling message.
  • the STA sends an acknowledgement message that is sent by the first communication resource according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence.
  • the access point further includes a third sending unit and a third receiving unit.
  • the third sending unit is configured to send a third resource scheduling message.
  • the third resource scheduling message is used to indicate a third communication resource used by the target STA to feed back the fourth channel state information.
  • the third receiving unit is configured to receive fourth channel state information that is sent by the target STA by using the third communication resource, where the fourth channel state information is part or all of the first channel state information.
  • the access point further includes a fourth sending unit and a fourth receiving unit.
  • the fourth sending unit is configured to send a second polling scheduling message and a fourth resource scheduling message.
  • the second polling scheduling message is used to request the fifth channel state information from the target STA.
  • Second polling schedule The message includes fragment information of the fifth channel state information in the first channel state information.
  • the fifth channel state information is part or all of the first channel state information after the fourth channel state information is removed.
  • the fourth resource scheduling message is used to indicate a fourth communication resource used by the target STA to feed back the fifth channel state information.
  • the fourth receiving unit is configured to receive fifth channel state information that is sent by the target STA by using the fourth communication resource.
  • the first receiving unit is specifically configured to: when the first indication information indicates that the target STA immediately feeds back channel state information, send an X frame of the first resource scheduling message. Receiving, by the target eNB, the second channel state information that is sent by the target STA according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence by using the first communication resource.
  • the access point further includes a fifth sending unit and a fifth receiving unit.
  • the fifth sending unit is configured to send a third polling scheduling message and a fifth resource scheduling message.
  • the third polling scheduling message is used to request the sixth channel state information from the target STA.
  • the third polling scheduling message includes segment information of the sixth channel state information in the first channel state information.
  • the sixth channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the fifth resource scheduling message is used to indicate a fifth communication resource used by the target STA to feed back the sixth channel state information.
  • the fifth receiving unit is configured to receive the sixth channel state information that is sent by the target STA by using the fifth communication resource.
  • the first indication information includes a field for indicating a time when the target STA feeds back the channel state information.
  • the first indication information includes a field for indicating all target STAs or respectively indicating whether each target STA immediately feeds back channel state information.
  • the first indication information is used to indicate non-immediate feedback.
  • the first indication Information is used to indicate non-immediate feedback.
  • the first indication information is used to indicate immediate feedback when the size of the resource block in the first communication resource is greater than or equal to the first threshold or the number of spatial streams used by the resource block in the first communication resource is greater than or equal to the second threshold.
  • the first feedback indication message, the first high efficiency training The training sequence and the first resource scheduling message are in different frames.
  • the first polling scheduling message and the second resource scheduling message are in the same data packet.
  • the second polling scheduling message and the fourth resource scheduling message are in the same data packet.
  • the third polling scheduling message and the fifth resource scheduling message are in the same data packet.
  • An access point for transmitting channel state information may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the access point and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 4, and are not described herein for brevity.
  • FIG. 17 is a schematic diagram of a station for transmitting channel state information according to still another embodiment of the present invention.
  • the station of FIG. 17 includes a first receiving unit 51, a first transmitting unit 52, a second receiving unit 53, and a second transmitting unit 54.
  • the first receiving unit 51 is configured to receive a feedback indication message, an efficient long training sequence, and a first resource scheduling message sent by the access point AP.
  • the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP.
  • the efficient long training sequence is used to determine the first channel state information of the target STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the second channel state information.
  • the second channel state information is part of the first channel state information.
  • the first sending unit 52 is configured to perform channel estimation according to the high-efficiency long training sequence received by the first receiving unit when determining that the target STA is belonged according to the feedback indication message received by the first receiving unit, to obtain the first channel state information, and obtain the first channel state information.
  • the first communication resource indicated by the first resource scheduling message received by the receiving unit sends the second channel state information to the AP.
  • the second receiving unit 53 is configured to receive a first polling scheduling message and a second resource scheduling message sent by the AP.
  • the first polling scheduling message is used by the AP to obtain third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the third resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the third channel state information.
  • the second sending unit 54 is configured to send third channel state information to the AP by using the second communication resource indicated by the second resource scheduling message received by the second receiving unit.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the station accesses the channel.
  • the point feedback channel status information, the access point may continue to send the polling scheduling message and the resource scheduling message to trigger the station to continue to feed back the channel state information of the unsuccessful feedback to the access point, so as to avoid the insufficient resources to be caused by one-time feedback.
  • the waste of resources can further improve the transmission efficiency of channel state information.
  • a station for transmitting channel state information according to an embodiment of the present invention may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the station and the other operations and/or functions described above are respectively implemented. The corresponding flow of the method shown in FIG. 5 will not be repeated here for brevity.
  • FIG. 18 is a schematic diagram of an access point for transmitting channel state information according to still another embodiment of the present invention.
  • the access point of FIG. 18 includes a first transmitting unit 61, a first receiving unit 62, a second transmitting unit 63, and a second receiving unit 64.
  • the first sending unit 61 is configured to send a feedback indication message, a high-efficiency long training sequence, and a first resource scheduling message to the station STA.
  • the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP.
  • the efficient long training sequence is used to determine the first channel state information of the target STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the second channel state information.
  • the second channel state information is part of the first channel state information.
  • the first receiving unit 62 is configured to receive second channel state information that is sent by the first communication resource indicated by the first resource scheduling message sent by the target STA by using the first sending unit.
  • the second sending unit 63 is configured to send the first polling scheduling message and the second resource scheduling message to the target STA.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the third resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the third channel state information.
  • the second receiving unit 64 is configured to receive third channel state information that is sent by the second communication resource indicated by the second resource scheduling message sent by the target STA by using the second sending unit.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the station feeds back channel state information to the access point, and the access point
  • the polling scheduling message and the resource scheduling message may continue to be sent to trigger the station to continue to feed back the channel state information that is not successfully fed back to the access point, so as to avoid
  • the resource-free resources are not enough to waste resources caused by one-time feedback, thereby improving the transmission efficiency of channel state information.
  • An access point for transmitting channel state information may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the access point and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 6, and are not described herein for brevity.
  • 19 is a schematic diagram of an apparatus for transmitting channel state information according to an embodiment of the present invention.
  • the apparatus 70 of FIG. 19 includes a transmitter 71, a receiver 72, a processor 73, and a memory 74.
  • Processor 73 controls the operation of device 70 and can be used to process signals.
  • Memory 74 can include read only memory and random access memory and provides instructions and data to processor 73.
  • Transmitter 71 and receiver 72 can be coupled to antenna 75.
  • the various components of device 70 are coupled together by a bus system 75, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 75 in the figure.
  • the method disclosed in the above embodiments of the present invention may be applied to the processor 73 or implemented by the processor 73.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 73 or an instruction in the form of software.
  • the processor 73 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can be implemented or executed in an embodiment of the invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 74, and the processor 73 reads the information in the memory 74 and, in conjunction with its hardware, performs the steps of the above method.
  • the receiver 72 may receive a feedback indication message, an efficient long training sequence, and a first resource scheduling message sent by the access point AP.
  • the feedback indication message is used to indicate at least two target stations STA that need to feed back channel state information to the AP.
  • the efficient long training sequence is used to determine the first channel state information of the target STA.
  • the first resource scheduling message is used to indicate the target STA The first communication resource used for feedback of the feedback indication message, the efficient long training sequence, and the first resource scheduling message.
  • the transmitter 71 may send the acknowledgement message to the AP through the first communication resource when determining that it belongs to the target STA according to the received feedback indication message.
  • the acknowledgement message is used to indicate that the feedback indication message, the efficient long training sequence, and the first resource scheduling message have been received.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit the channel state information, and the site feeds back the confirmation message to the access point, so that part can be avoided.
  • the site does not support the waste of resources caused by immediate feedback, thereby improving the transmission efficiency of channel state information.
  • the transmitter 71 may receive the X frame interval of the feedback indication message, the high efficiency long training sequence, and the first resource scheduling message when the target STA does not support immediate feedback of the first channel state information. After the XIFS, an acknowledgement message is sent to the AP through the first communication resource.
  • the processor 73 may be configured to determine the first channel state information according to the high efficiency long training sequence.
  • the receiver 72 is configured to receive a second resource scheduling message sent by the AP.
  • the second resource scheduling message is used to indicate a second communication resource used by the STA when feeding back the second channel state information.
  • the transmitter 71 can be configured to send second channel state information to the AP through the second communication resource.
  • the second channel state information is part or all of the first channel state information.
  • the receiver 72 may receive the first polling scheduling message and the third resource scheduling message sent by the AP.
  • the first polling scheduling message is used by the AP to request third channel state information from the STA, where the first polling scheduling message includes fragment information of the third channel state information in the first channel state information, and third channel state information. And deleting part or all of the second channel state information for the first channel state information, where the third resource scheduling message is used to indicate the third communication resource used by the STA to feed back the third channel state information.
  • the transmitter 71 can be configured to send third channel state information to the AP through the third communication resource.
  • the first polling scheduling message and the third resource scheduling message are carried in the same data packet.
  • the first polling scheduling message and the third resource scheduling message are carried in a trigger trigger frame of the same data packet.
  • the trigger frame includes the first beamforming Reporting a polling type indication field and a first feedback fragment retransmission bit bitmap field
  • the trigger frame further includes at least one of a first resource allocation information field and a first resource allocation reuse indication field, where the third resource scheduling message is located A resource allocation information field, where the first polling scheduling message is located in a first feedback fragment retransmission bit bitmap field, and the first resource allocation reusing indication field is used to indicate whether the third resource scheduling message and the second resource scheduling message are the same.
  • the trigger frame further includes an identifier field of the target STA.
  • the first polling scheduling message and the third resource scheduling message are carried in a beamforming report polling BF Report Poll frame of the same data packet, where the BF Report Poll frame may include a receiving address field, a second feedback fragment retransmission bit bitmap field and a third feedback fragment retransmission bit bitmap field, and the BF Report Poll frame may further include at least one of a second resource allocation information field and a second resource allocation reuse indication field
  • the third resource scheduling message is located in the second resource allocation information field, where the first polling scheduling message is located in the third feedback fragment retransmission bit bitmap field, and the indication information of the third resource scheduling message is located in the second resource allocation reuse indication. Field.
  • the BF Report Poll frame further includes an identifier field of the target STA.
  • the BF Report Poll frame is used as a polling frame for triggering multi-user channel state information transmission in any of the following manners: a receiving address field, a second feedback fragment retransmission bit The length of the graph field, BF Report Poll frame.
  • the station further includes a second determining unit, where the second determining unit is configured to determine that the STA does not support immediate feedback of the first channel state information according to at least one of the following conditions: the STA's own capability Insufficient, the priority of the STA buffering the first channel state information is lower than the first threshold, and the size of the resource block of the first communication resource is less than the threshold.
  • a station for transmitting channel state information according to an embodiment of the present invention may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the station and the other operations and/or functions described above are respectively implemented.
  • the corresponding flow of the method shown in FIG. 1B will not be repeated here for brevity.
  • the transmitter 71 can be configured to send a feedback indication message, a high efficiency long training sequence, and a first resource scheduling message to the station STA.
  • the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information. Efficient long training sequence for determining the purpose The first channel state information of the STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the feedback indication message, the high efficiency long training sequence, and the first resource scheduling message.
  • the receiver 72 may receive an acknowledgement message sent by the target STA by the first communication resource indicated by the first resource scheduling message sent.
  • the acknowledgement message is used to indicate that the target has received the feedback indication message, the efficient long training sequence, and the first resource scheduling message.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit the channel state information, and the site feeds back the confirmation message to the access point, so that part can be avoided.
  • the site does not support the waste of resources caused by immediate feedback, thereby improving the transmission efficiency of channel state information.
  • the receiver 72 may receive, after receiving the feedback indication message, the efficient long training sequence, and the X frame interval XIFS of the first resource scheduling message, the target STA that does not support the immediate feedback channel state information, A confirmation message sent over the first communication resource.
  • the transmitter 71 may send a second resource scheduling message to the target STA.
  • the second resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the second channel state information.
  • the receiver 72 can receive second channel state information that the target STA transmits through the second communication resource.
  • the second channel state information is part or all of the first channel state information.
  • the transmitter 71 may send a first polling scheduling message and a third resource scheduling message to the target STA.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information in which the third channel state information is in the first channel state information.
  • the third channel state information is part or all after the second channel state information is removed from the first channel state information, and the third resource scheduling message is used to indicate the third communication resource used when the target STA feeds back the third channel state information.
  • the receiver 72 can receive third channel state information transmitted by the target STA through the third communication resource.
  • the first polling scheduling message and the third resource scheduling message are carried in the same data packet.
  • the first polling scheduling message and the third resource scheduling message are carried in a trigger trigger frame of the same data packet.
  • the trigger frame includes a first beamforming report polling type indication field and a first feedback fragment retransmission bit bitmap field, and the trigger frame further includes at least one of a first resource allocation information field and a first resource allocation reuse indication field.
  • the third resource scheduling message is located in the first resource allocation information field, and the first polling scheduling message
  • the first resource allocation re-use bitmap field is used to indicate whether the third resource scheduling message is the same as the second resource scheduling message.
  • the trigger frame further includes an identifier field of the target STA.
  • the first polling scheduling message and the third resource scheduling message are carried in a beamforming report polling BF Report Poll frame of the same data packet.
  • the BF Report Poll frame may include a receive address field, a second feedback slice retransmission bit bitmap field, and a third feedback slice retransmission bit bitmap field.
  • the BF Report Poll frame may further include at least one of a second resource allocation information field and a second resource allocation reuse indication field.
  • the third resource scheduling message is located in the second resource allocation information field, where the first polling scheduling message is located in the third feedback fragment retransmission bit bitmap field, and the indication information of the third resource scheduling message is located in the second resource allocation reuse indication field.
  • the BF Report Poll frame further includes an identifier field of the target STA.
  • the BF Report Poll frame is used to trigger a polling frame for triggering multi-user channel state information transmission in any of the following manners: a receiving address field, and a second feedback fragment retransmission.
  • Bit bitmap field length of the BF Report Poll frame.
  • the target STA that does not support the immediate feedback of the first channel state information includes at least one of the following conditions: the target STA has insufficient capability, and the target STA caches the first channel state.
  • the priority of the information is lower than the first threshold and the size of the resource block of the first communication resource is less than the threshold.
  • An access point for transmitting channel state information may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the access point and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 2, and are not described herein for brevity.
  • the receiver 72 may receive the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence that are sent by the access point AP according to the first indication information.
  • the first feedback indication message is used to indicate at least two target stations STA that need to feed back channel state information to the AP.
  • the first resource scheduling message or the first feedback indication message includes first indication information.
  • the first indication information is used to indicate whether the target STA immediately feeds back channel state information.
  • the first efficient long training sequence is used to determine first channel state information of the target STA.
  • First resource scheduling message The first communication resource used to indicate that the target STA feeds back the second channel state information or the acknowledgement message.
  • the second channel state information is part or all of the first channel state information.
  • the acknowledgement message is used to indicate that the first feedback indication message, the first efficient long training sequence, and the first resource scheduling message have been received.
  • the transmitter 71 may perform channel estimation according to the received efficient long training sequence to determine the first channel state information when the UE belongs to the target STA according to the received feedback indication message, and the first indicated by the received first resource scheduling message.
  • the communication resource sends a second channel status information or an acknowledgement message to the AP.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the access point can indicate whether the site immediately feedbacks, and the site can be connected according to the site.
  • the indication of the ingress point feeds back the channel state information or the confirmation message to the access point, so that the waste of resources caused by the partial feedback not being supported by the partial site can be avoided, and the transmission efficiency of the channel state information can be improved.
  • the receiver 72 may be configured to: when the first indication information indicates that the STA does not immediately feed back the channel state information, receive the first feedback indication message sent by the AP and the first high-efficiency long training.
  • the first resource scheduling message is received after the sequence X frame spacing XIFS.
  • the first feedback indication message includes first indication information.
  • the transmitter 71 may be configured to: after receiving the first resource scheduling message X frame spacing XIFS, send the second to the AP by using the first communication resource according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence. Channel status information.
  • the receiver 72 may be configured to receive a first polling scheduling message and a second resource scheduling message sent by the AP.
  • the first polling scheduling message is used to request third channel state information from the STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed, and the second resource scheduling message is used to indicate the second communication resource used by the STA to feed back the third channel state information.
  • the transmitter 71 can be configured to send the third channel state information to the AP by using the second communication resource.
  • the transmitter 71 may be configured to: after the first indication information indicates that the STA does not immediately feed back channel state information, after transmitting the X frame spacing XIFS of the first resource scheduling message, The first communication resource sends an acknowledgement message to the AP.
  • the receiver 72 may be configured to receive a third resource scheduling message sent by the AP.
  • the third resource scheduling message is used to instruct the STA to feed back the fourth channel state letter.
  • the third communication resource used at the time of the interest.
  • the transmitter 71 can be configured to send fourth channel state information by using a third communication resource, where the fourth channel state information is part or all of the first channel state information.
  • the receiver 72 may be configured to receive a second polling scheduling message and a fourth resource scheduling message sent by the AP.
  • the second polling scheduling message is used to request the fifth channel state information from the STA.
  • the second polling scheduling message includes segment information of the fifth channel state information in the first channel state information.
  • the fifth channel state information is part or all of the first channel state information after the fourth channel state information is removed.
  • the fourth resource scheduling message is used to indicate a fourth communication resource used when the target STA feeds back the fifth channel state information.
  • the transmitter 71 can transmit the fifth channel state information to the AP through the fourth communication resource.
  • the transmitter 71 may be configured to: when the first indication information indicates that the STA immediately feeds back channel state information, after transmitting the X frame spacing XIFS of the first resource scheduling message, by using the first communication The resource sends second channel state information to the AP.
  • the receiver 72 may be configured to receive a third polling scheduling message and a fifth resource scheduling message sent by the AP.
  • the third polling scheduling message is used to request the sixth channel state information from the STA.
  • the third polling scheduling message includes segment information of the sixth channel state information in the first channel state information.
  • the sixth channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the fifth resource scheduling message is used to indicate a fifth communication resource used by the target STA to feed back the sixth channel state information.
  • the transmitter 71 can be configured to send sixth channel state information to the AP through the fifth communication resource.
  • the first indication information includes a field for indicating a time when the STA feeds back the channel state information.
  • the first indication information includes a field for indicating all STAs or respectively indicating whether each STA immediately feeds back channel state information.
  • the transmitter 71 may send the first feedback indication message and the first high-efficiency long training sequence and then send the first resource scheduling message
  • the first indication information is used to indicate non-immediate feedback.
  • the first indication Information is used to indicate non-immediate feedback.
  • the first indication information is used to indicate immediate feedback when the size of the resource block in the first communication resource is greater than or equal to the first threshold or the number of spatial streams used by the resource block in the first communication resource is greater than or equal to the second threshold.
  • the first feedback indication message, the first high-efficiency long training sequence, and the first resource scheduling message are in different frames.
  • the first polling scheduling message and the second resource scheduling message are in the same data packet.
  • the second polling scheduling message and the fourth resource scheduling message are in the same data packet.
  • the third polling scheduling message and the fifth resource scheduling message are in the same data packet.
  • a station for transmitting channel state information according to an embodiment of the present invention may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the station and the other operations and/or functions described above are respectively implemented. The corresponding flow of the method shown in FIG. 3 will not be repeated here for brevity.
  • the processor 73 may determine first indication information, where the first indication information is used to indicate whether at least two target stations STA that need to feed back channel state information to the access point AP are immediately Feedback channel status information.
  • the transmitter 71 may send the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence to the target STA according to the determined first indication information.
  • the first resource scheduling message or the first feedback indication message includes first indication information.
  • the first feedback indication message is used to indicate at least two target stations STA that need to feed back channel state information to the AP.
  • the first efficient long training sequence is used to determine first channel state information of the target STA.
  • the first resource scheduling message is used to indicate the first communication resource used by the target STA to feed back the second channel state information or the confirmation message.
  • the second channel state information is part or all of the first channel state information.
  • the acknowledgement message is used to indicate that the first feedback indication message, the first efficient long training sequence, and the first resource scheduling message have been received.
  • the receiver 72 may receive second channel state information or a confirmation message that is sent by the target STA according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence, which are sent by the first communication resource.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the access point can indicate whether the site immediately feedbacks, and the site can be connected according to the site.
  • the indication of the ingress point feeds back the channel state information or the confirmation message to the access point, so that the waste of resources caused by the partial feedback not being supported by the partial site can be avoided, and the transmission efficiency of the channel state information can be improved.
  • the transmitter 71 may be configured to: when the first indication information indicates that the target STA does not immediately feed back channel state information, send the first feedback indication message and The first resource scheduling message is sent after the first high-efficiency long training sequence X frame spacing XIFS.
  • the first feedback indication message includes the first indication information.
  • the receiver 72 may be configured to receive, after the X frame spacing XIFS of the first resource scheduling message, the second channel that is sent by the STA according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence by using the first communication resource. status information.
  • the transmitter 71 may be configured to send a first polling scheduling message and a second resource scheduling message.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed, and the second resource scheduling message is used to indicate the second communication resource used by the target STA to feed back the third channel state information.
  • the receiver 72 can be configured to receive the third channel state information that is sent by the target STA by using the second communication resource.
  • the receiver 72 may be configured to: when the first indication information indicates that the target STA does not immediately feed back the channel state information, receive the target STA after sending the X frame interval XIFS of the first resource scheduling message. And a confirmation message sent by the first communication resource according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence.
  • the transmitter 71 may be configured to send a third resource scheduling message.
  • the third resource scheduling message is used to indicate a third communication resource used by the target STA to feed back the fourth channel state information.
  • the receiver 72 may receive fourth channel state information that is sent by the target STA through the third communication resource, and the fourth channel state information is part or all of the first channel state information.
  • the transmitter 71 may be configured to send a second polling scheduling message and a fourth resource scheduling message.
  • the second polling scheduling message is used to request the fifth channel state information from the target STA.
  • the second polling scheduling message includes segment information of the fifth channel state information in the first channel state information.
  • the fifth channel state information is part or all of the first channel state information after the fourth channel state information is removed.
  • the fourth resource scheduling message is used to indicate a fourth communication resource used by the target STA to feed back the fifth channel state information.
  • the receiver 72 can receive the fifth channel state information transmitted by the target STA through the fourth communication resource.
  • the receiver 72 may be configured to: when the first indication information indicates that the target STA immediately feeds back channel state information, send an X frame spacing of the first resource scheduling message. Receiving, by the XIFS, the target STA, according to the first resource scheduling message, the first feedback indication message, and the first high-efficiency long training sequence, by using the first communication resource The second channel state information transmitted by the source.
  • the transmitter 71 may be configured to send a third polling scheduling message and a fifth resource scheduling message.
  • the third polling scheduling message is used to request the sixth channel state information from the target STA.
  • the third polling scheduling message includes segment information of the sixth channel state information in the first channel state information.
  • the sixth channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the fifth resource scheduling message is used to indicate a fifth communication resource used by the target STA to feed back the sixth channel state information.
  • the receiver 72 is configured to receive the sixth channel state information that is sent by the target STA by using the fifth communication resource.
  • the first indication information includes a field for indicating a time when the target STA feeds back the channel state information.
  • the first indication information includes a field for indicating all target STAs or respectively indicating whether each target STA immediately feeds back channel state information.
  • the first indication information is used to indicate non-immediate feedback.
  • the first indication Information is used to indicate non-immediate feedback.
  • the first indication information is used to indicate immediate feedback when the size of the resource block in the first communication resource is greater than or equal to the first threshold or the number of spatial streams used by the resource block in the first communication resource is greater than or equal to the second threshold.
  • the first feedback indication message, the first efficient long training sequence, and the first resource scheduling message are in different frames.
  • the first polling scheduling message and the second resource scheduling message are in the same data packet.
  • the second polling scheduling message and the fourth resource scheduling message are in the same data packet.
  • the third polling scheduling message and the fifth resource scheduling message are in the same data packet.
  • An access point for transmitting channel state information may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the access point and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 4, and are not described herein for brevity.
  • the receiver 72 can receive the inverse sent by the access point AP.
  • the feed indication message, the efficient long training sequence, and the first resource scheduling message are used to indicate at least two target STAs that need to feed back channel state information to the AP.
  • the efficient long training sequence is used to determine the first channel state information of the target STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the second channel state information.
  • the second channel state information is part of the first channel state information.
  • the transmitter 71 may perform channel estimation according to the received high-efficiency long training sequence to obtain the first channel state information, and obtain the first communication resource indicated by the received first resource scheduling message, when determining that the target STA belongs to the target STA according to the received feedback indication message. Sending second channel state information to the AP.
  • the receiver 72 is configured to receive a first polling scheduling message and a second resource scheduling message sent by the AP.
  • the first polling scheduling message is used by the AP to obtain third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the third resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the third channel state information.
  • the transmitter 71 may send the third channel state information to the AP by using the second communication resource indicated by the received second resource scheduling message.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the station feeds back channel state information to the access point, and the access point
  • the polling scheduling message and the resource scheduling message may be further sent to trigger the station to continue to feed back the channel state information that is not successfully fed back to the access point, so as to avoid resource waste caused by one-time feedback, thereby improving channel state information. Transmission efficiency.
  • a station for transmitting channel state information according to an embodiment of the present invention may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the station and the other operations and/or functions described above are respectively implemented. The corresponding flow of the method shown in FIG. 5 will not be repeated here for brevity.
  • the transmitter 71 may send a feedback indication message, a high efficiency long training sequence, and a first resource scheduling message to the station STA.
  • the feedback indication message is used to indicate at least two target STAs that need to feed back channel state information to the AP.
  • Efficient long training sequence for determination First channel state information of the target STA.
  • the first resource scheduling message is used to indicate a first communication resource used by the target STA to feed back the second channel state information.
  • the second channel state information is part of the first channel state information.
  • the receiver 72 may receive second channel state information that is sent by the target STA by the first communication resource indicated by the first resource scheduling message that is sent.
  • the transmitter 71 can transmit a first polling scheduling message and a second resource scheduling message to the target STA.
  • the first polling scheduling message is used to request third channel state information from the target STA.
  • the first polling scheduling message includes segment information of the third channel state information in the first channel state information.
  • the third channel state information is part or all of the first channel state information after the second channel state information is removed.
  • the third resource scheduling message is used to indicate a second communication resource used by the target STA to feed back the third channel state information.
  • the receiver 72 may receive third channel state information transmitted by the target STA through the second communication resource indicated by the second resource scheduling message.
  • the resource scheduling message, the feedback indication message, and the high-efficiency long training sequence are sent to the station by the access point, so that multiple stations are scheduled to transmit channel state information, and the station feeds back channel state information to the access point, and the access point
  • the polling scheduling message and the resource scheduling message may be further sent to trigger the station to continue to feed back the channel state information that is not successfully fed back to the access point, so as to avoid resource waste caused by one-time feedback, thereby improving channel state information. Transmission efficiency.
  • An access point for transmitting channel state information may correspond to a method for transmitting channel state information in the method of the embodiment of the present invention, and each unit/module in the access point and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 6, and are not described herein for brevity.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • RAM random access memory
  • ROM read only memory
  • EEPROM electrically programmable ROM
  • EEPly erasable programmable ROM registers
  • hard disk removable disk
  • CD-ROM computer-readable media

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Abstract

本发明实施例提供了一种传输信道状态信息的方法、接入点和站点。该方法包括站点接收接入点发送的反馈指示消息、高效长训练序列和资源调度消息，并当确定属于目标站点时，通过资源调度消息指示的通信资源向接入点反馈确认消息。反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA，高效长训练序列用于确定STA的信道状态信息。本发明实施例通过向接入点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。

Description

传输信道状态信息的方法、接入点和站点 技术领域
本发明涉及通信领域，并且更具体地，涉及传输信道状态信息的方法、接入点和站点。
背景技术
目前，已知一种多用户传输(MU-MIMO，Multiuser Multiple Input Multiple Output)技术，MU-MIMO利用空间维度通过多个并行信道，实现多个用户传输。但这种方式需要发送端或者接收端具有全部或者部分信道状态信息，否则就无法令接收端正确地解调出多路有效信号，导致传输失败。
随着无线局域网(WLAN，Wireless LAN)技术的发展，希望能够将MU-MIMO技术应用于WLAN网络，为了同时调度多个用户进行信道状态信息的反馈，在站点(Station，STA)能力有限时，接入点(AP，Access Point)可以通过发送空数据包声明(NDPA，Null Data Packet Announcement)、空数据包(NDP，Null Data Packet)和波束成形报告轮询帧(Beamforming Report Poll，BF Report Poll)，以使得STA根据NDPA携带的信息以及NDP携带的高效长训练序列(HE-LTF，high efficient long training filed)进行信道估计，并在一定时长范围内向AP反馈信道状态信息。
但是，在802.11ax标准中引入了更多的STA，有些STA不能立即反馈，例如，STA能力有限而不支持立即反馈或者AP分配的资源有限，在上述情况下，STA无法立即进行信道状态信息的反馈，AP可能因为长时间等待接收信道状态信息而浪费资源，进而使得信道状态信息传输效率降低。
发明内容
本发明实施例提供一种传输信道状态信息的方法、接入点和站点，能够提高信道状态信息的传输效率。
第一方面，提供了一种传输信道状态信息的方法，该方法包括：站点STA接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定所述STA的第一信道状态信 息，所述第一资源调度消息用于指示所述STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；所述STA解析所述反馈指示消息并确定属于目标STA时，所述STA通过所述第一通信资源向所述AP发送确认消息，所述确认消息用于指示已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
第二方面，提供了一种传输信道状态信息的方法，该方法包括：发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；接收所述目标STA通过所述第一通信资源发送的确认消息，所述确认消息用于指示所述目标STA已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
第三方面，提供了一种传输信道状态信息的方法，该方法包括：接收接入点AP根据第一指示信息发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信息，所述第一指示信息用于指示所述STA是否立即反馈信道状态信息，所述第一高效长训练序列用于确定所述STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；当解析所述反馈指示消息并确定属于所述目标STA时，根据所述高效长训练序列进行信道估计，以确定所述第一信道状态信息，并通过所述第一通信资源向所述AP发送所述第二信道状态信息或所述确认消息。
第四方面，提供了一种传输信道状态信息的方法，该方法包括：确定第一指示信息，所述第一指示信息用于指示需要向接入点AP反馈信道状态信息的至少两个目标站点STA是否立即反馈信道状态信息；根据所述第一指示信息发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信 息，所述第一反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述第一高效长训练序列用于确定所述目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息或所述确认消息。
第五方面，提供了一种传输信道状态信息的方法，该方法包括：站点STA接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；当解析所述反馈指示消息并确定属于所述目标STA时，根据所述高效长训练序列进行信道估计，得到所述第一信道状态信息，并通过所述第一通信资源向所述AP发送所述第二信道状态信息；接收所述AP发送的第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于所述AP向所述STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述STA反馈所述第三信道状态信息时所使用的第二通信资源；通过所述第二通信资源向所述AP发送所述第三信道状态信息。
第六方面，提供了一种传输信道状态信息的方法，该方法包括：发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；接收所述目标STA 通过所述第一通信资源发送的所述第二信道状态信息；发送第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述目标STA反馈所述第三信道状态信息时所使用的第二通信资源；接收所述目标STA通过所述第二通信资源发送的所述第三信道状态信息。
第七方面，提供了一种传输信道状态信息的站点，该站点包括：第一接收单元，用于接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述高效长训练序列用于确定STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；第一发送单元，用于当解析所述接收单元接收的反馈指示消息并确定属于所述目标STA时，通过所述第一通信资源向所述AP发送所述确认消息，所述确认消息用于指示已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
第八方面，提供了一种传输信道状态信息的接入点，该接入点包括：第一发送单元，用于向站点STA发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；第一接收单元，用于接收目标STA通过所述第一发送单元发送的所述第一资源调度消息所指示的所述第一通信资源发送的确认消息，所述确认消息用于指示所述目标STA已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
第九方面，提供了一种传输信道状态信息的站点，该站点包括：第一接收单元，用于接收接入点AP根据第一指示信息发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一反馈指示消息用 于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信息，所述第一指示信息用于指示STA是否立即反馈信道状态信息，所述第一高效长训练序列用于确定所述STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；第一发送单元，用于当解析所述第一接收单元接收的所述反馈指示消息并确定属于所述STA时，根据所述第一接收单元接收的所述高效长训练序列进行信道估计，以确定所述第一信道状态信息，并通过所述第一接收单元接收的所述第一资源调度消息所指示的所述第一通信资源向所述AP发送所述第二信道状态信息或所述确认消息。
第十方面，提供了一种传输信道状态信息的接入点，该接入点包括：确定单元，用于确定第一指示信息，所述第一指示信息用于指示需要向接入点AP反馈信道状态信息的至少两个目标站点STA是否立即反馈信道状态信息；第一发送单元，用于根据所述确定单元确定的所述第一指示信息向目标STA发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信息，所述第一反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述第一高效长训练序列用于确定所述目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；第一接收单元，用于接收所述目标STA根据所述第一发送单元发送的所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息或所述确认消息。
第十一方面，提供了一种传输信道状态信息的站点，该站点包括：第一接收单元，用于接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定STA的第一信道 状态信息，所述第一资源调度消息用于指示所述STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；第一发送单元，用于当解析所述第一接收单元接收的所述反馈指示消息并确定属于所述目标STA时，根据所述第一接收单元接收的所述高效长训练序列进行信道估计，得到所述第一信道状态信息，并通过所述第一接收单元接收的第一资源调度消息指示的所述第一通信资源向所述AP发送所述第二信道状态信息；第二接收单元，用于接收所述AP发送的第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于所述AP向所述STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述STA反馈所述第三信道状态信息时所使用的第二通信资源；第二发送单元，用于通过所述第二接收单元接收的所述第二资源调度消息指示的所述第二通信资源向所述AP发送所述第三信道状态信息。
第十二方面，提供了一种传输信道状态信息的接入点，该接入点包括：第一发送单元，用于发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；第一接收单元，用于接收所述目标STA通过所述第一发送单元发送的所述第一资源调度消息指示的所述第一通信资源发送的所述第二信道状态信息；第二发送单元，用于发送第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述目标STA反馈所述第三信道状态信息时所使用的第二通信资源；第二接收单元，用于接收所述目标STA通过所述第二发送单元发送的所述第二资源调度消息指示的所述第二通信资源发送的所述第三信道状态信息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
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图13是本发明一个实施例的一种传输信道状态信息的站点的示意图。
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图16是本发明再一实施例的一种传输信道状态信息的接入点的示意图。
图17是本发明再一实施例的一种传输信道状态信息的站点的示意图。
图18是本发明再一实施例的一种传输信道状态信息的接入点的示意图。
图19是本发明一个实施例的一种传输信道状态信息的装置的示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
本发明的技术方案，可以应用于各种需要反馈信道状态信息来进行数据传输的通信系统，例如，应用MU-MIMO技术的无线局域网(WLAN，Wireless Local Area Network)，例如，无线保真(Wi-Fi，Wireless Fidelity)等。
在WLAN中，站点(STA，Station)，也可以称为系统、用户单元、接入终端、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理、用户装置或UE(User Equipment，用户设备)。该STA可以是蜂窝电话、无绳电话、SIP(Session Initiation Protocol，会话启动协议)电话、WLL(Wireless Local Loop，无线本地环路)站、PDA(Personal Digital Assistant，个人数字处理)、具有无线局域网(例如Wi-Fi)通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备。
另外，在WLAN中，接入点(AP，Access Point)，可用于与接入终端通过无线局域网进行通信，并将接入终端的数据传输至网络侧，或将来自网络侧的数据传输至接入终端。
以下，为了便于理解和说明，作为示例而非限定，以将本发明的传输信 号的方法和装置在Wi-Fi系统中的执行过程和动作进行说明。
图1A是可应用本发明实施例的通信系统的场景示意图。
图1A的通信系统包括一个AP和三个STA(例如，图1A中的STA1、STA2和STA3)。AP可以与STA1、STA2和STA3进行通信。该系统中，AP可以调度多个STA进行信道状态信息的反馈与传输。需要说明的是，STA的数目可以为两个或多个。
方法实施例一：
图1B是本发明一个实施例的一种传输信道状态信息的方法的示意性流程图。图1B的方法可以由站点执行。
101，站点STA接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA，高效长训练序列用于确定目标STA的第一信道状态信息，第一资源调度消息用于指示目标STA针对反馈指示消息、高效长训练序列和第一资源调度消息进行反馈时所使用的第一通信资源。
102，STA解析反馈指示消息并确定属于目标STA时，STA通过第一通信资源向AP发送确认消息，确认消息用于指示已收到反馈指示消息、高效长训练序列和第一资源调度消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
在本发明的一个实施例中，接入点可以向站点发送反馈指示消息、高效长训练序列和资源调度消息(例如，第一资源调度消息)，以触发站点向接入点反馈其信道状态信息。站点可以接收接入点发送的反馈指示消息、高效长训练序列和资源调度消息，当站点确定属于目标站点时，向接入点反馈确认消息，以表示已收到反馈指示消息、高效长训练序列和资源调度消息。一般地，当站点不支持立即反馈信道状态信息时，可以向接入点反馈确认消息。当站点可以立即反馈信道状态信息时，可以直接向接入点返回信道状态信息，也可以先返回确认消息。其中，信道状态信息可以以波束成形报告(BF Report)帧为载体进行反馈。
在本发明的一个实施例中，确认消息并不携带信道状态信息，只用于指 示已经收到反馈指示消息、高效长训练序列和资源调度消息。换句话说，用确认消息显式指示已经收到反馈指示消息、高效长训练序列和资源调度消息，后续还需要接入点进一步地触发，站点才能反馈信道状态信息。确认消息可以为确认(Acknowledgement，ACK)帧，也可以为块确认(Block Acknowledge，BA)帧。
在本发明的一个实施例中，多个站点向接入点反馈信道状态信息时，为了避免站点之间通信干扰，多个站点所使用的通信资源中时域资源、频域资源和空域资源中至少有一个互不相同。例如，多个站点所使用的通信资源可以为同一时域资源但互不干扰(例如，正交)的频域资源，也可以为统一时域资源但互不干扰(例如，正交)的空域资源。
具体地，反馈指示消息可以用于指示需要向接入点反馈信道状态信息的至少两个目标STA。反馈指示消息可以包括需要进行反馈的目标站点的标识信息、反馈类型(例如，单用户反馈或多用户反馈)以及需要反馈的列数等。反馈指示消息的内容和形式可以与现有技术中AP广播发送的NDPA中承载的信息相似，这里为了避免赘述，省略其详细说明。站点可以根据高效长训练序列对信道进行估计，以确定目标STA的信道状态信息。高效长训练序列的符号数往往等于接入点的天线数，这样，站点可以完整地测量信道。高效长训练序列与现有技术中NDP用于信道估计的长训练序列的作用、生成方法及使用方法相似，这里，为了避免赘述，省略其详细说明。资源调度消息用于指示各该目标STA在进行多用户上行反馈时所使用的通信资源(例如，第一通信资源)，例如，通信资源可以包括站点进行上行数据传输时的资源块的位置信息、资源参数信息等。通信资源可以为对应同一时段且在频域不相互干扰(例如，正交)的频域资源，从而，可以AP与多个目标STA之间可以采用正交频分多址(OFDMA，Orthogonal Frequency Division Multiple Access)等方式传输信道状态信息。
本发明实施例对接入点向多个站点广播发送的反馈指示消息、高效长训练序列和资源调度消息，可以通过发送NDPA、NDP和触发帧的结合帧来实现。但对NDPA、NDP和触发帧的结合的具体方式不做限制。例如，接入点可以先发送NDPA，再发送NDP和触发帧(trigger Frame)的结合帧。其中，NDPA可以包括反馈指示消息，NDP和触发帧二者的结合帧中可以包括多站点进行信道状态信息反馈的资源调度消息和高效长训练序列。资源调度消息 可以承载于高效信令字B段(HE-SIG-B，High Efficiently Signal Field-B)，高效长训练序列可以承载于同一帧(或者说，同一数据包)中的高效长训练序列(HE-LTF，high efficient long training filed)字段。
又如，接入点可以先发送NDPA帧和触发帧的结合帧，再发送NDP。NDPA帧和触发帧的结合帧中可以包括每个站点的反馈指示消息和资源调度消息。NDPA帧和触发帧的结合帧可以在NDPA的基础上引入各站点的信息域，用来指示各个站点对应的反馈指示消息。反馈指示消息可以包括各STA估计或反馈信道状态信息的参数。资源调度消息可以包括各站点进行上行传输时的资源块位置信息以及资源参数信息等，例如，时空流数。NDP中可以包括与接入点的天线数目相等的高效长训练字段。
再如，还可以接入点直接向站点发送NDPA、NDP和触发帧的结合帧。其中，NDPA包括的反馈指示消息和触发帧包括的资源调度消息可以承载于结合帧的HE-SIG-B字段，高效长训练序列可以承载于同一帧(或者说，同一数据包)的HE-LTF字段。另外，还可以资源调度消息具体承载于NDP中的HE-SIG-B字段，高效长训练序列具体承载于同一NDP帧中的HE-LTF字段，反馈指示消息可以承载于同一NDP帧中位于该HE-LTF字段之后的字段。
本发明实施例中提到的某两种帧或某三种帧的结合帧可以是对现有的帧结构进行扩展或复用，也可以重新设计帧结构，使其具体本发明实施例所需的功能。结合帧可以包括用于指示结合帧为已经赋予特殊功能的字段，可以用某一字段来指示该结合帧的类型。换句话说，结合帧可以处于同一数据分组的不同字段，结合帧也可以承载于同一个MAC帧中，或者上述两种情况的结合。三种帧的结合帧可以为其中任意两种或者全部三种组成结合帧。
本发明实施例中，站点在收到NDPA、NDP和触发帧的结合帧之后，可以根据自身的能力自主决定是否进行立即反馈。当站点可以立即进行反馈时，可以在X帧间距(X Inter-Frame Space，XIFS)之后向接入点反馈信道状态信息。当站点能力不足以立即反馈信道状态信息时，可以向节点首先反馈确认消息，以表示收到上述结合帧，并对信道状态信息进行估计。
本发明实施例对站点是否进行立即反馈的具体原因不做限定。例如，当站点的自身能力不足、站点缓存信道状态信息的优先级低于第一阈值或者接入点为站点分配的通信资源的资源块的大小小于门限值等情况下时，都可以 认为站点不支持立即反馈。
可选地，站点可以根据高效长训练序列确定第一信道状态信息。
波束成形报告通常是一个携带很多字节数的帧，而确认消息通常只有几个或几十个字节数的短帧。当接入点为站点分配的资源块较大时，站点可以根据资源调度消息同自身缓存的数据情况，在向接入点反馈确认消息的同时传输其它帧。例如，可以将ACK帧和数据帧聚合起来一起发送。再如，站点在反馈确认消息时，还可以一并发送资源分配请求消息，向接入点报告自己上行数据的缓存信息，以使得接入点得知自己需要传输上行数据及其所需的资源。再如，站点在反馈确认消息时，还可以一并向接入点上报还需要多长时间才来得及反馈信道状态信息。这样，在站点向接入点反馈确认消息时一并反馈其它信息，可以进一步提高资源传输的效率，避免资源浪费。
可选地，当目标站点接收反馈指示消息、高效长训练序列和资源调度消息之后，可以确定是否支持立即反馈信道状态信息(例如，第一信道状态信息)。当目标STA不支持立即反馈信道状态信息时，在接收反馈指示消息、高效长训练序列和第一资源调度消息的X帧间距XIFS之后可以通过第一通信资源向AP发送确认消息。
可选地，站点可以接收AP发送的第二资源调度消息，其中，第二资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第二通信资源，并通过第二通信资源向AP发送第二信道状态信息，其中，第二信道状态信息为第一信道状态信息的部分或全部。
具体地，接入点收到确认消息一段时长之后，可以向目标站点再次发送资源调度消息(例如，第二资源调度消息)，第二资源调度消息用于指示目标STA反馈信道状态信息(例如，第二信道状态信息)时所使用的通信资源(例如，第二通信资源)。站点接收第二资源调度消息之后，可以通过第二通信资源向接入点发送未成功反馈的部分或全部信道状态信息。
当站点接收第二资源调度消息之后，通过第二通信资源向接入点发送未成功反馈的部分信道状态信息时，接入点可以继续向站点发送轮询调度消息和资源调度消息，以使得站点可以继续向接入点反馈信道状态信息，直至完全反馈完成为止。轮询调度消息可以承载于波束成形报告轮询帧，波束成形报告轮询帧可以包括用于指示需要继续传输内容的指示字段。当站点无法一次性将所有波束成形报告反馈给接入点时，站点可以将波束成形报告分为若 干个分片(segment)，每次反馈时向接入点上报还有几个分片没有反馈。而接入点可以根据站点的反馈以及自身接收情况(例如，接入点分配的资源块大小，或者接入点是否成功接收索取的确认消息或者信道状态信息)向站点发送波束成形报告轮询帧，以指示站点在下一次传输时需要反馈哪几个分片。
例如，站点可以接收AP发送的第一轮询调度消息和第三资源调度消息，其中，第一轮询调度消息用于AP向目标STA索取第三信道状态信息，第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息，第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第三资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第三通信资源，站点可以通过第三通信资源向AP发送第三信道状态信息。
第三信道状态信息在第一信道状态信息中的片段信息可以为反馈第三信道状态信息时需要反馈哪几个分片的指示信息，也可以为需要反馈哪几个分片。
本发明实施例对具体轮询调度消息(例如，第一轮询调度消息)和资源调度消息(例如，第三资源调度消息)的结合的具体方式不做限定，二者结合的帧的结构可以复用现有的帧结构，例如，对现有的触发帧或波束成形报告轮询帧进行扩展和复用，还可以重新设计新的满足功能的帧结构。
可选地，第一轮询调度消息和第三资源调度消息可以承载于同一数据包或同一个数据包的同一帧。
轮询调度消息和资源调度消息可以承载于基于trigger帧设计的同一个帧中，该帧可以包括帧控制(Frame Control)字段、波束成形报告轮询类型指示(BF Report Poll type indication)字段、资源分配重用指示(Resource allocation reuse indication)字段、站点标识(Station Identification)字段、资源分配信息(Resource allocation information)字段、反馈分片重传指示位图(Feedback segment Retransmission Bitmap)字段。其中，帧控制字段可以用来指示该帧可以用于资源调度。波束成形报告轮询类型指示字段可以用来指示帧的类型可以用来对波束成形报告进行轮询。具体地，反馈分片重传比特位图字段可以用来指示传输哪几个分片。资源分配信息字段可以包括资源调度消息。资源分配重用指示字段可以用来指示该帧所指示的通信资源与上一 次传输所用的通信资源是否相同。当该帧所指示的通信资源与上一次传输所用的通信资源相同时，可以不需要资源分配信息字段，而直接使用上一次传输时的通信资源进行传输。当该帧所指示的通信资源与上一次传输所用的通信资源不同时，可以使用该帧中资源分配信息字段中包括的资源调度消息所包括的通信资源进行传输。站点标识字段用来指示需要向接入点反馈信道状态信息的站点。
例如，第一轮询调度消息和第三资源调度消息可以承载于同一数据包的触发trigger帧，该trigger帧可以包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段。该trigger帧还可以包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种，其中，第三资源调度消息位于第一资源分配信息字段，第一轮询调度消息位于第一反馈分片重传比特位图字段。第一资源分配重用指示字段用于指示第三资源调度消息与第二资源调度消息是否相同。当第三资源调度消息与第二资源调度消息相同时，通过第二通信资源向AP发送第三信道状态信息。
可选地，该trigger帧还可以包括目标STA的标识字段。
又如，第一轮询调度消息和第三资源调度消息承载于同一数据包的第一波束成形报告轮询BF Report Poll帧，BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段，第一BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种，其中，第三资源调度消息位于第二资源分配信息字段，第一轮询调度消息位于第三反馈分片重传比特位图字段，第三资源调度消息的指示信息位于第二资源分配重用指示字段。
其中，帧控制字段可以用来指示该帧可以用于波束成形报告的轮询。关联地址字段用来指示被轮询的站点的标识符。原有波束成形报告轮询帧字段中的反馈分片重传比特位图字段可以用来指示该帧的类型为波束成形报告轮询帧和触发帧的结合帧。资源分配信息字段可以包括资源调度消息。资源分配重用指示可以用来指示该帧所指示的通信资源与上一次传输所用的通信资源是否相同。当该帧所指示的通信资源与上一次传输所用的通信资源相同时，可以不需要资源分配信息字段，而直接使用上一次传输时的通信资源进行传输。当该帧所指示的通信资源与上一次传输所用的通信资源不同时，可以使用该帧中资源分配信息字段中包括的资源调度消息所包括的通信资 源进行传输。第三反馈分片重传比特位图字段为与每个站点一一对应的反馈分片重传比特位图字段。
可选地，BF Report Poll帧还可以包括目标STA的标识字段。
本发明实施例对如何指示所复用的帧或所设计的新的帧为用于触发多用户信道状态信息传输的具体方式不做限制。
在发明的一个实施例中，可以用下列任一方式指示BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:接收地址字段、第二反馈分片重传比特位图字段、BF Report Poll帧的长度。
例如，可以将接收地址字段从原有帧的媒体存取控制(Media Access Control,简称MAC)地址该为广播MAC地址或者某一特定地址，以指示该帧为BF Report Poll帧和trigger帧的结合帧，用于触发多用户信道状态信息的传输。
在本发明的一个实施例中，还可以利用第二反馈分片重传比特位图字段来指示该BF Report Poll帧用于触发多用户信道状态信息的传输。例如，可以将第二反馈分片重传比特位图字段设置为0来指示该帧为BF Report Poll帧和trigger帧的结合帧，用于触发多用户信道状态信息的传输。
在本发明的一个实施例中，还可以利用帧的长度来指示该帧的类型。一般地，在802.11ac标准中，BF Report Poll帧的长度是固定的，所以可以通过帧的长度来指示该帧为BF Report Poll帧和trigger帧的结合帧，用于触发多用户信道状态信息的传输。
此外，还可以通过定义新的类型的MAC帧，来明确指示这是一个轮询触发帧。
本发明的实施例是以一个站点为例进行示例性说明，每个站点都可以根据自身能力确定反馈确认消息或信道状态信息。
上文中图1B是从站点的角度详细描述了根据本发明实施例的用于传输信道状态信息的方法，下面将从接入点的角度描述根据本发明实施例的用于传输信道状态信息的方法。
方法实施例二：
图2是本发明另一实施例的一种传输信道状态信息的方法的示意性流程图。图2的方法可以由接入点执行。
201，向站点STA发送反馈指示消息、高效长训练序列和第一资源调度 消息，反馈指示消息用于指示需要反馈信道状态信息的至少两个目标STA，高效长训练序列用于确定目标STA的第一信道状态信息，第一资源调度消息用于指示目标STA针对反馈指示消息、高效长训练序列和第一资源调度消息进行反馈时所使用的第一通信资源。
202，接收目标STA通过第一通信资源发送的确认消息，确认消息用于指示目标STA已收到反馈指示消息、高效长训练序列和第一资源调度消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，接收目标STA通过第一通信资源发送的确认消息包括：接收不支持立即反馈第一信道状态信息的目标STA在接收反馈指示消息、高效长训练序列和第一资源调度消息的X帧间距XIFS之后，通过第一通信资源发送的确认消息。
可选地，作为本发明的一个实施例，方法还包括：发送第二资源调度消息。第二资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第二通信资源。接收目标STA通过第二通信资源发送的第二信道状态信息。第二信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，方法还包括：发送第一轮询调度消息和第三资源调度消息。第一轮询调度消息用于向所述目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第三资源调度消息用于指示所述目标STA反馈第三信道状态信息时所使用的第三通信资源。接收目标STA通过所述第三通信资源发送的第三信道状态信息。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的触发trigger帧。trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段。trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种。第三资源调度 消息位于第一资源分配信息字段，第一轮询调度消息位于第一反馈分片重传比特位图字段，第一资源分配重用指示字段用于指示第三资源调度消息与第二资源调度消息是否相同。
可选地，作为本发明的一个实施例，trigger帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧。BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段。BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种。第三资源调度消息位于第二资源分配信息字段。第一轮询调度消息位于第三反馈分片重传比特位图字段。第三资源调度消息的指示信息位于第二资源分配重用指示字段。
可选地，作为本发明的一个实施例，BF Report Poll帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，用下列任一方式指示BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:接收地址字段、第二反馈分片重传比特位图字段、BF Report Poll帧的长度。
可选地，作为本发明的一个实施例，不支持立即反馈第一信道状态信息的目标STA包括下列条件中的至少一个：目标STA的自身能力不足、目标STA缓存第一信道状态信息的优先级低于第一阈值和第一通信资源的资源块的大小小于门限值。
根据本发明实施例的传输信道状态信息的方法可以由接入点执行，可以执行图1B实施例之后由接入点执行的相应流程，为了简洁，在此不再赘述。
以上结合图1B和图2详细介绍了站点接收反馈指示消息、高效长训练序列和资源调度消息之后，站点自主决定反馈内容。下面结合图3和图4详细介绍接入点发送反馈指示消息、高效长训练序列和资源调度消息时，根据站点上报的能力信息决定反馈内容。
方法实施例三：
图3是本发明再一实施例的一种传输信道状态信息的方法的示意性流程图。图3的方法可以由站点执行。
301，接收接入点AP根据第一指示信息发送的第一资源调度消息、第一 反馈指示消息和第一高效长训练序列，其中，第一反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA，第一资源调度消息或第一反馈指示消息包括第一指示信息，第一指示信息用于指示目标STA是否立即反馈信道状态信息，第一高效长训练序列用于确定所述目标STA的第一信道状态信息，第一资源调度消息用于指示目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，第二信道状态信息为第一信道状态信息的部分或全部，确认消息用于指示已收到第一反馈指示消息、第一高效长训练序列和第一资源调度消息。
302，当解析反馈指示消息并确定属于目标STA时，根据高效长训练序列进行信道估计，以确定第一信道状态信息，并通过第一通信资源向AP发送第二信道状态信息或确认消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，接入点可以指示站点是否立即反馈，站点可以根据接入点的指示向接入点反馈信道状态信息或确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
在本发明的一个实施例中，接入点可以接收站点上报的是否有能力进行立即反馈的能力信息，接入点收到能力信息之后，再结合自身情况，确定指示信息，用于指示站点是否立即反馈。接入点确定指示信息之后，可以将指示信息携带在反馈指示消息或资源调度消息中，接入点可以向站点发送反馈指示消息、高效长训练序列和资源调度消息，以触发站点向接入点反馈其信道状态信息。站点接收反馈指示消息、高效长训练序列和资源调度消息之后，可以根据指示信息向接入点反馈信道状态信息或确认消息。
可选地，当第一指示信息指示目标STA不立即反馈信道状态信息时，STA在接收到AP发送的第一反馈指示消息和第一高效长训练序列X帧间距XIFS之后接收到第一资源调度消息。其中，第一反馈指示消息包括第一指示信息。站点在接收第一资源调度消息X帧间距XIFS之后，根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源向AP发送第二信道状态信息。
当接入点发送的指示信息(例如，第一指示信息)指示站点不立即进行反馈时，接入点可以首先向站点发送NDPA和NDP，可以用NDPA来指示 本次反馈为非立即反馈，站点在收到NDPA和NDP之后不必立即进行反馈。进一步地，接入点再在XIFS之后，向站点发送资源调度消息(例如，第一资源调度消息)。站点接收接入点发送的资源调度消息之后，可以向接入点反馈信道状态信息(例如，第二信道状态信息)。
站点向接入点反馈的信道状态信息可以为部分或全部，即站点可以一次性地将信道状态信息反馈给接入点，也可以分两次或多次反馈。例如，第一信道状态信息为站点通过信道估计得到的全部的信道状态信息，那么，第二信道状态信息可以为第一信道状态信息的部分或全部。
当站点收到第二信道状态信息之后，如果第二信道状态信息为第一信道状态信息的一部分，接入点可以继续向站点索取未成功反馈的信道状态信息，以使站点继续反馈信道状态信息，直至完全反馈完成。
例如，站点可以接收AP发送的第一轮询调度消息和第二资源调度消息，其中，第一轮询调度消息用于向目标STA索取第三信道状态信息，第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息，第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第二资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第二通信资源。通过第二通信资源向AP发送第三信道状态信息。
可选地，当第一指示信息指示目标STA不立即反馈信道状态信息时，在发送第一资源调度消息X帧间距XIFS之后，根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源向所述AP发送确认消息。
接入点接收站点发送的确认消息后，可以向站点发送资源调度消息，以调度站点向接入点反馈信道状态信息。资源调度消息可以承载于trigger帧中，以触发站点向接入点反馈信道状态信息。
例如，站点可以接收AP发送的第三资源调度消息，其中，第三资源调度消息用于指示目标STA反馈第四信道状态信息时所使用的第三通信资源。站点可以通过第三通信资源发送第四信道状态信息，第四信道状态信息为第一信道状态信息的部分或全部。
这里，当指示信息中AP对不同的STA进行不同的指示时，例如，部分站点指示立即反馈，部分站点指示非立即反馈。那么，下一个步骤AP继续调度STA反馈信道状态信息时，由于有的站点已反馈信道状态信息，这时 下一个步骤AP可以发送资源调度信息和轮询调度消息，以同时调度站点进行信道状态信息的反馈。如果指示信息中AP对不同的STA都指示为非立即反馈，那么下一个步骤AP可以仅发送资源调度消息，触发站点反馈信道状态信息即可。
当第四信道状态信息为第一信道状态信息的一部分时，接入点可以继续向站点发送资源调度消息和轮询调度消息，以使站点继续向接入点反馈未成功反馈的信道状态信息。
资源调度消息和轮询调度消息可以承载于不同的帧，也可以承载于同一数据包的同一帧，本发明实施例对具体轮询调度消息和资源调度消息的结合的具体方式不做限定，二者结合的帧的结构可以复用现有的帧结构，例如，对现有的触发帧或波束成形报告轮询帧进行扩展和复用，还可以重新设计新的满足功能的帧结构。资源调度消息和轮询调度消息可以承载于同一数据包的trigger帧或BF Report Poll帧，对现有的trigger帧或BF Report Poll帧进行复用的情形在图1B的描述中已有说明，为避免重复，在此不再详细赘述。
例如，站点可以接收AP发送的第二轮询调度消息和第四资源调度消息。其中，第二轮询调度消息用于向目标STA索取第五信道状态信息。第二轮询调度消息包括第五信道状态信息在第一信道状态信息中的片段信息，第五信道状态信息为第一信道状态信息除去第四信道状态信息之后的部分或全部。第四资源调度消息用于指示目标STA反馈所述第五信道状态信息时所使用的第四通信资源。站点可以通过第四通信资源向所述AP发送所述第五信道状态信息。
可选地，当第一指示信息指示目标STA立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后，根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源向AP发送第二信道状态信息。
当第二信道状态信息为第一信道状态信息的一部分时，接入点可以继续向站点索取未成功反馈的信道状态信息，直至完全反馈完成。
例如，站点可以接收AP发送的第三轮询调度消息和第五资源调度消息。其中，第三轮询调度消息用于向目标STA索取第六信道状态信息。第三轮询调度消息包括第六信道状态信息在第一信道状态信息中的片段信息。第六信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全 部。第五资源调度消息用于指示目标STA反馈所述第六信道状态信息时所使用的第五通信资源。站点可以通过第五通信资源向AP发送所述第六信道状态信息。
本发明实施例对如何指示是否进行立即反馈不做限制，例如，可以通过第一指示信息中的某一字段来指示，也可以通过发送反馈指示消息、高效长训练序列和资源调度消息的时间顺序来进行指示，还可以通过通信资源中资源块的大小或者资源块所使用的空间流的数目来指示。
可选地，第一指示信息可以包括用于指示目标STA反馈信道状态信息的时间的字段。
可选地，第一指示信息可以包括用于指示所有目标STA或分别指示每个目标STA是否立即反馈信道状态信息的字段。
可选地，当第一反馈指示消息和第一高效长训练序列之后再发送第一资源调度消息时，第一指示信息用于指示非立即反馈。
可选地，当第一通信资源中资源块的大小小于第一阈值或者第一通信资源中资源块所使用的空间流的数目小于第二阈值时，第一指示信息用于指示非立即反馈；
当所述第一通信资源中资源块的大小大于或者等于第一阈值或者第一通信资源中资源块所使用的空间流的数目大于或者等于第二阈值时，所述第一指示信息用于指示立即反馈。
本发明实施例对第一反馈指示消息、第一高效长训练序列和第一资源调度消息所处的帧不做限制。例如，当接入点确定不指示站点立即反馈信道状态信息时，可以向站点分别发送NDPA、NDP和触发帧，这样，第一反馈指示消息、第一高效长训练序列和第一资源调度消息就处于不同的帧。
可选地，第一反馈指示消息、第一高效长训练序列和第一资源调度消息处于不同的帧。
本发明实施例对资源调度消息及其对应的轮询调度消息所处的数据包或帧不做限制。二者可以处于同一数据包中，或处于同一数据包的同一帧，或者处于不同数据包，或者处于同一数据包的不同帧。
可选地，第一轮询调度消息和第二资源调度消息可以处于同一数据包。第二轮询调度消息和第四资源调度消息可以处于同一数据包。第三轮询调度消息和第五资源调度消息也可以处于同一数据包。
本发明的实施例是以一个站点为例进行示例性说明，接入点可以指示所有站点进行立即反馈，也可以指示所有站点进行非立即反馈，还可以分别指示每个站点进行立即反馈或非立即反馈。当接入点分别指示每个站点进行立即反馈或非立即反馈且站点第一次反馈仅反馈了部分信道状态信息时，在下一次的调度中，接入点可以向站点发送资源调度消息和轮询调度消息。
方法实施例四：
图4是本发明再一实施例的一种传输信道状态信息的方法的示意性流程图。图4的方法可以由接入点执行。
401，确定第一指示信息，第一指示信息用于指示需要向AP反馈信道状态信息的至少两个目标STA是否立即反馈信道状态信息。
402，根据第一指示信息向目标STA发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，第一资源调度消息或第一反馈指示消息包括所述第一指示信息，第一反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA，第一高效长训练序列用于确定目标STA的第一信道状态信息，第一资源调度消息用于指示目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，第二信道状态信息为第一信道状态信息的部分或全部，确认消息用于指示已收到第一反馈指示消息、第一高效长训练序列和第一资源调度消息。
403，接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息或确认消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，接入点可以指示站点是否立即反馈，站点可以根据接入点的指示向接入点反馈信道状态信息或确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，根据第一指示信息发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列包括：当第一指示信息指示所述目标STA不立即反馈信道状态信息时，在发送第一反馈指示消息和第一高效长训练序列的X帧间距XIFS之后再发送第一资源调度消息。第一反馈指示消息包括第一指示信息；其中，接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信 道状态信息或确认消息包括：在发送第一资源调度消息的X帧间距XIFS之后接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息。
可选地，作为本发明的一个实施例，方法还包括：发送第一轮询调度消息和第二资源调度消息。第一轮询调度消息用于向目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第二资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第二通信资源。接收目标STA通过第二通信资源发送的第三信道状态信息。
可选地，作为本发明的一个实施例，接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息或确认消息包括：当第一指示信息指示目标STA不立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的确认消息。
可选地，作为本发明的一个实施例，方法还包括：发送第三资源调度消息。第三资源调度消息用于指示目标STA反馈第四信道状态信息时所使用的第三通信资源。接收目标STA通过第三通信资源发送的第四信道状态信息。第四信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，方法还包括：发送第二轮询调度消息和第四资源调度消息。第二轮询调度消息用于向目标STA索取第五信道状态信息。第二轮询调度消息包括第五信道状态信息在第一信道状态信息中的片段信息。第五信道状态信息为第一信道状态信息除去第四信道状态信息之后的部分或全部。第四资源调度消息用于指示目标STA反馈第五信道状态信息时所使用的第四通信资源。接收目标STA通过第四通信资源发送的第五信道状态信息。
可选地，作为本发明的一个实施例，接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息或确认消息包括：当第一指示信息指示目标STA立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后接收目标STA根 据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息。
可选地，作为本发明的一个实施例，方法还包括：发送第三轮询调度消息和第五资源调度消息。第三轮询调度消息用于向所述目标STA索取第六信道状态信息。第三轮询调度消息包括第六信道状态信息在第一信道状态信息中的片段信息。第六信道状态信息为第一信道状态信息除去所述第二信道状态信息之后的部分或全部。第五资源调度消息用于指示目标STA反馈所述第六信道状态信息时所使用的第五通信资源。接收目标STA通过所述第五通信资源发送的所述第六信道状态信息。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示目标STA反馈信道状态信息的时间的字段。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示所有目标STA或分别指示每个目标STA是否立即反馈信道状态信息的字段。
可选地，作为本发明的一个实施例，当向目标STA发送第一反馈指示消息和第一高效长训练序列之后再发送第一资源调度消息时，第一指示信息用于指示非立即反馈。
可选地，作为本发明的一个实施例，当第一通信资源中资源块的大小小于第一阈值或者第一通信资源中资源块所使用的空间流的数目小于第二阈值时，第一指示信息用于指示非立即反馈。当第一通信资源中资源块的大小大于或者等于第一阈值或者第一通信资源中资源块所使用的空间流的数目大于或者等于第二阈值时，第一指示信息用于指示立即反馈。
可选地，作为本发明的一个实施例，第一反馈指示消息、第一高效长训练序列和第一资源调度消息处于不同的帧。
可选地，作为本发明的一个实施例，第一轮询调度消息和第二资源调度消息处于同一数据包。或者，第二轮询调度消息和第四资源调度消息处于同一数据包。或者，第三轮询调度消息和第五资源调度消息处于同一数据包。
资源调度消息和轮询调度消息可以承载于不同的帧，也可以承载于同一数据包的同一帧，本发明实施例对具体轮询调度消息和资源调度消息的结合的具体方式不做限定，二者结合的帧的结构可以复用现有的帧结构，例如，对现有的触发帧或波束成形报告轮询帧进行扩展和复用，还可以重新设计新的满足功能的帧结构。资源调度消息和轮询调度消息可以承载于同一数据包 的trigger帧或BF Report Poll帧，对现有的trigger帧或BF Report Poll帧进行复用的情形在图1B的描述中已有说明，为避免重复，在此不再详细赘述。
根据图4实施例的传输信道状态信息的方法可以由接入点执行，可以执行图3实施例之后由接入点执行的相应流程，为了简洁，在此不再赘述。
下面将结合图5和图6详细介绍站点接收反馈指示消息、高效长训练序列和资源调度消息之后，反馈信道状态信息之后的后续流程。
方法实施例五：
图5是本发明再一实施例的一种传输信道状态信息的方法的示意性流程图。图5的方法可以由站点执行。
501，站点STA接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA，高效长训练序列用于确定目标STA的第一信道状态信息，第一资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第一通信资源，第二信道状态信息为第一信道状态信息的一部分。
502，当解析反馈指示消息并确定属于目标STA时，根据高效长训练序列进行信道估计，得到第一信道状态信息，并通过第一通信资源向AP发送第二信道状态信息。
503，接收AP发送的第一轮询调度消息和第二资源调度消息，其中，第一轮询调度消息用于AP向目标STA索取第三信道状态信息，第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息，第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第三资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第二通信资源。
504，通过第二通信资源向AP发送第三信道状态信息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈信道状态信息，接入点还可以继续发送轮询调度消息和资源调度消息，以触发站点继续向接入点反馈未成功反馈的信道状态信息，这样能够避免资源不足以一次性反馈造成的资源浪费，进而能够提高信道状态信息的传输效率。
在本发明的一个实施例中，接入点可以向站点发送反馈指示消息、高效 长训练序列和资源调度消息(例如，第一资源调度消息)，以触发站点向接入点反馈其信道状态信息。站点可以接收接入点发送的反馈指示消息、高效长训练序列和资源调度消息，当站点确定属于目标站点时，向接入点反馈信道状态信息。当第一次反馈的信道状态信息不是全部的信道状态信息时，接入点可以向站点发送轮询调度消息(例如，第一轮询调度消息)和资源调度消息(例如，第二资源调度消息)，以触发站点继续反馈未成功反馈的信道状态信息。站点可以一次全部反馈完成，也可以分多次反馈。
资源调度消息和轮询调度消息可以承载于不同的帧，也可以承载于同一数据包的同一帧，本发明实施例对具体轮询调度消息和资源调度消息的结合的具体方式不做限定，二者结合的帧的结构可以复用现有的帧结构，例如，对现有的触发帧或波束成形报告轮询帧进行扩展和复用，还可以重新设计新的满足功能的帧结构。资源调度消息和轮询调度消息可以承载于同一数据包的trigger帧或BF Report Poll帧，对现有的trigger帧或BF Report Poll帧进行复用的情形在图1B的描述中已有说明，为避免重复，在此不再详细赘述。
方法实施例六：
图6是本发明再一实施例的一种传输信道状态信息的方法的示意性流程图。图6的方法可以由接入点执行。
601，向站点STA发送反馈指示消息、高效长训练序列和第一资源调度消息，反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA，高效长训练序列用于确定目标STA的第一信道状态信息，第一资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第一通信资源，第二信道状态信息为所述第一信道状态信息的一部分。
602，接收目标STA通过第一通信资源发送的第二信道状态信息。
603，向目标STA发送第一轮询调度消息和第二资源调度消息，其中，第一轮询调度消息用于向目标STA索取第三信道状态信息，第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息，第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第三资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第二通信资源。
604，接收目标STA通过第二通信资源发送的第三信道状态信息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高 效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈信道状态信息，接入点还可以继续发送轮询调度消息和资源调度消息，以触发站点继续向接入点反馈未成功反馈的信道状态信息，这样能够避免资源不足以一次性反馈造成的资源浪费，进而能够提高信道状态信息的传输效率。
根据本发明实施例的传输信道状态信息的方法可以由接入点执行，可以执行图5实施例之后由接入点执行的相应流程，为了简洁，在此不再赘述。
资源调度消息和轮询调度消息可以承载于不同的帧，也可以承载于同一数据包的同一帧，本发明实施例对具体轮询调度消息和资源调度消息的结合的具体方式不做限定，二者结合的帧的结构可以复用现有的帧结构，例如，对现有的触发帧或波束成形报告轮询帧进行扩展和复用，还可以重新设计新的满足功能的帧结构。资源调度消息和轮询调度消息可以承载于同一数据包的trigger帧或BF Report Poll帧，对现有的trigger帧或BF Report Poll帧进行复用的情形在图1B的描述中已有说明，为避免重复，在此不再详细赘述。
下面将结合图7至图10的具体例子详细说明接入点如何调度多个站点进行信道状态信息的反馈传输。下面仅以接入点同时调度两个站点或三个站点为例进行示例性说明，但本发明并不限定于此，站点的数目可以为两个或多个。
方法实施例七：
图7A和图7B是本发明一个实施例的接入点调度多个站点进行信道状态信息传输的交互图。图7A和图7B分别从两个不同的角度体现本发明的实施例。图7A体现的是接入点和站点之间进行信息或消息的交互，图7B体现的是接入点和站点之间进行帧的交互，其实质是一样的，帧中携带信息或消息。
701，AP向STA发送第一资源调度消息、反馈指示消息和高效长训练序列。
这里的STA可以为图7中的STA1、STA2和STA3，还可以包括其他的STA，这里未画出。接入点可以向多个站点广播发送NDPA、NDP和trigger帧三者的结合帧,并利用结合帧中字段来携带第一资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行反馈。本发明实施例对NDPA、NDP和trigger帧三者结合的方式不做限制，可以两两结合再与第三个结合， 也可以三个一起结合。具体结合方式可参照图1B部分的描述，在此不再详细赘述。
本发明实施例中的序号701有三个，表示接入点可以向多个站点同时广播发送NDPA、NDP和trigger帧三者的结合帧。
702，STA向AP反馈确认消息或信道状态信息。
站点可以接收接入点发送的第一资源调度消息、反馈指示消息和高效长训练序列，可以对信道状态信息进行估计，并可以自主决定向接入点反馈确认消息，表示已收到第一资源调度消息、反馈指示消息和高效长训练序列。站点还可以自主决定反馈信道状态信息。一般地，当站点不支持立即反馈时，可以向接入点首先反馈确认消息(例如，站点1和站点2)。当站点支持立即反馈时，可以向接入点反馈信道状态信息。
本发明实施例中的序号702有三个，这里用同一个序号表示多个站点可以同时向接入点进行反馈。
应理解，本发明实施例中多个站点可以同时向接入点反馈不同的消息，本发明实施例对此不做限定。例如，目标站点3可以向接入点反馈信道状态信息，目标站点1和2可以向接入点反馈确认消息。站点3反馈信道状态信息之后，接入点如果接收到部分信道状态信息，还可以继续向站点发送资源调度消息和轮询调度消息，以调度站点继续反馈未成功反馈的信道状态信息。本发明实施例仅以站点3一次性反馈全部信道状态信息为例进行示例性说明。
703，AP向STA发送第二资源调度消息。
接入点可以在收到确认消息之后向站点继续发送第二资源调度消息，以触发站点向接入点反馈信道状态信息。
704，STA向AP返回信道状态信息。
站点接收接入点发送的第二资源调度消息之后，可以通过资源调度消息所指示的通信资源向接入点反馈部分或全部信道状态信息。
站点1或2可以向接入点返回全部的信道状态信息，这样流程结束。不同站点的反馈流程可以不同。例如，步骤704中，站点1可以反馈全部信道状态信息，这样流程结束；而站点2可以反馈部分信道状态信息。本发明实施例以站点1和2都反馈部分状态信息为例进行示例性说明。
705，AP向STA发送第三资源调度消息和轮询调度消息。
当步骤704接入点收到站点反馈的部分信道状态信息时，接入点可以继续向站点发送第三资源调度消息和轮询调度消息，以使得站点(例如，站点1和站点2)继续反馈未成功反馈的信道状态信息。
706，STA向AP返回未成功反馈的信道状态信息。
站点接收接入点发送的第三资源调度消息和轮询调度消息之后，可以继续向接入点反馈未成功反馈的信道状态信息。
本发明实施例中的未成功反馈的信道状态信息可以是站点还未向接入点反馈的信道状态信息，也可以是站点已经向接入点反馈但接入点没有正确接收的信道状态信息。当接入点发送轮询触发帧时，站点可以根据反馈分片重传比特位图字段进行信道状态信息的反馈。当接入点只发送触发帧时，则说明接入点之前并未收到站点反馈的任何信息，站点可以从信道状态信息的第一个分片开始向接入点传输。
本发明实施例中STA1、STA2和STA3均可以为任意一个站点，STA2执行的流程可以由STA1执行，同理，STA1执行的流程也可以由STA2执行。本发明只是为了描述方便，以STA1、STA2和STA3对站点予以区分，并不限定本发明的保护范围。
图7B中的流程图显示的步骤与图7A中流程图中显示的步骤一一对应。图7B中的帧结构中可以携带上述反馈指示消息、高效长训练序列和资源调度消息以及轮询调度消息。当接入点通过发送帧的顺序指示非立即反馈时，站点在收到结合帧之后，可以自主决定反馈波束成形报告或确认帧。当站点3一次性反馈完波束成形报告时，站点3的反馈流程结束；当站点3非一次性反馈完成时，接入点还可以通过发送波束成形报告轮询帧和触发帧的结合帧继续触发站点反馈未成功发送的信道状态信息，在本实施例中未画出这种情况。站点1和2决定非立即反馈时，可以首先反馈确认帧。在接收接入点发送的触发帧之后再反馈信道状态信息。后续地，如果还有未成功反馈的信道状态信息，接入点可以继续发送波束成形报告轮询帧和触发帧的结合帧，触发站点继续反馈信道状态信息，直至全部反馈完成为止。
图7主要介绍AP向STA发送资源调度消息、反馈指示消息和高效长训练序列之后，STA可以自主决定反馈信道状态信息或确认消息。当站点不能立即反馈信道状态信息时，可以先反馈确认消息，并在接入点进一步调度STA反馈信道状态信息后来反馈信道状态信息，这样使得后续流程可以高效 灵活的进行信道状态信息的传输。
方法实施例八：
图8A和图8B是本发明另一实施例的接入点调度多个站点进行信道状态信息传输的交互图。图8A和图8B分别从两个不同的角度体现本发明的实施例。图8A体现的是接入点和站点之间进行信息或消息的交互，图8B体现的是接入点和站点之间进行帧的交互，其实质是一样的，帧中携带信息或消息。
801，AP向STA发送反馈指示消息和高效长训练序列。
这里的STA可以为图7中的STA1和STA2，还可以包括其他的STA，这里未画出。接入点可以向站点发送反馈指示消息和高效长训练序列，以使得站点对信道进行估计。反馈指示消息中可以携带指示消息，以指示是否立即进行反馈。例如，当指示信息指示不立即反馈时，站点可以不立即进行信道状态信息的反馈，以保证能力不足以立即反馈的站点可以一段时长后再反馈信道状态信息。
802，AP向STA发送第一资源调度消息。
接入点可以向站点发送第一资源调度消息，且发送第一资源调度消息在发送反馈指示消息和高效长训练序列之后，即步骤802在步骤801之后，以使得站点可以在收到反馈指示消息和高效长训练序列而能力不足以立即反馈信道状态信息时，在接收到第一资源调度消息之后再向接入点反馈信道状态信息。
803，STA向AP返回信道状态信息。
站点可以接收反馈指示消息、高效长训练序列之后，不立即进行反馈。而在接收第一资源调度消息之后，再向接入点反馈部分或全部信道状态信息。例如，步骤803站点1和站点2可以向接入点反馈部分或全部信道状态信息。本发明实施例仅以站点1和站点2都反馈部分信道状态信息为例进行示例性说明。
804，AP向STA发送第二资源调度消息和轮询调度消息。
当步骤803站点向接入点反馈的是部分信道状态信息时，接入点可以继续向站点(例如，站点1和站点2)调度未成功反馈的信道状态信息，当然，这里继续调度也可以为一次或多次，直至完全反馈完成为止。
805，STA向AP返回未成功反馈的信道状态信息。
站点在接收接入点发送的第二资源调度消息和轮询调度消息之后，可以向接入点反馈未成功反馈的信道状态信息。
本发明实施例中的未成功反馈的信道状态信息可以是站点还未向接入点反馈的信道状态信息，也可以是站点已经向接入点反馈但接入点没有正确接收的信道状态信息。当接入点发送轮询触发帧时，站点可以根据反馈分片重传比特位图字段进行信道状态信息的反馈。当接入点只发送触发帧时，则说明接入点之前并未收到站点反馈的任何信息，站点可以从信道状态信息的第一个分片开始向接入点传输。
本发明实施例中STA1和STA2均可以为任意一个站点，STA2执行的流程可以由STA1执行，同理，STA1执行的流程也可以由STA2执行。本发明只是为了描述方便，以STA1和STA2对站点予以区分，并不限定本发明的保护范围。
图8B中的流程图显示的步骤与图8A中流程图中显示的步骤一一对应。图8B中的帧结构中可以携带上述反馈指示消息、高效长训练序列和资源调度消息以及轮询调度消息。当接入点通过发送帧的顺序指示非立即反馈时，站点1和站点2在收到触发帧之后才反馈波束成形报告。然后，接入点还可以通过继续发送波束成形报告轮询帧和触发帧的结合帧继续调度未成功反馈的信道状态信息。
图8主要介绍AP确定是否要求STA立即进行信道状态信息的反馈时，向STA发送反馈指示消息和高效长训练序列之后再发送资源调度消息，以及站点接收反馈指示消息、高效长训练序列和资源调度消息之后反馈信道状态信息的后续流程。AP根据STA上报的是否支持立即反馈确定发送反馈指示消息、高效长训练序列和资源调度消息的顺序，即AP决定是否要求STA立即反馈信道状态信息，使得整个反馈过程在部分站点能力不足以立即反馈信道状态信息时仍可以在后续过程中整体上高效灵活的进行信道状态信息的传输。
方法实施例九：
图9A和图9B是本发明再一实施例的接入点调度多个站点进行信道状态信息传输的交互图。图9A和图9B分别从两个不同的角度体现本发明的实施例。图9A体现的是接入点和站点之间进行信息或消息的交互，图9B体现的是接入点和站点之间进行帧的交互，其实质是一样的，帧中携带信息 或消息。
901，AP向STA发送第一资源调度消息、反馈指示消息和高效长训练序列。
AP向STA发送第一资源调度消息、反馈指示消息和高效长训练序列，其中，资源调度消息或者反馈指示消息中可以携带指示消息。这里的STA可以为图9中的STA1和STA2，还可以包括其他的STA，这里未画出。当指示信息指示不立即反馈时，站点可以不立即进行信道状态信息的反馈，以保证能力不足以立即反馈的站点可以一段时长后再反馈信道状态信息。
902，STA向AP返回确认消息。
站点接收指示信息之后，确定不需要进行立即反馈，可以向接入点先反馈确认消息，表示已收到第一资源调度消息、反馈指示消息和高效长训练序列。
903，AP向STA发送第二资源调度消息。
接入点可以在一段时长之后向站点发送第二资源调度消息，以调度站点进行信道状态信息的反馈。
904，STA向AP返回信道状态信息。
站点接收接入点发送的第二资源调度消息之后，可以通过第二资源调度消息指示的通信资源向接入点反馈部分或全部信道状态信息。本发明实施例仅以站点1和站点2向接入点反馈部分信道状态信息为例进行实例性说明。
905，AP向STA发送第三资源调度消息和轮询调度消息。
当步骤904站点向接入点反馈的是部分信道状态信息时，接入点可以继续向站点1和站点2调度反馈未成功反馈的信道状态信息，当然，这里继续调度也可以为一次或多次，直至完全反馈完成为止。
906，STA向AP返回未成功反馈的信道状态信息。
站点1和站点2可以继续向接入点反馈未成功反馈的信道状态信息。
本发明实施例中STA1和STA2均可以为任意一个站点，STA2执行的流程可以由STA1执行，同理，STA1执行的流程也可以由STA2执行。本发明只是为了描述方便，以STA1和STA2对站点予以区分，并不限定本发明的保护范围。
图9B中的流程图显示的步骤与图9A中流程图中显示的步骤一一对应。图9B中的帧结构中可以携带上述反馈指示消息、高效长训练序列和资源调 度消息以及轮询调度消息。当接入点对站点1和2均指示非立即反馈时，站点1和站点2反馈确认帧。然后，接入点可以继续发送触发帧调度站点的波束成形报告。其中，波束成形报告为信道状态信息的载体。后续，接入点还可以通过继续发送波束成形报告轮询帧和触发帧的结合帧继续调度未成功反馈的信道状态信息。
本发明实施例中的未成功反馈的信道状态信息可以是站点还未向接入点反馈的信道状态信息，也可以是站点已经向接入点反馈但接入点没有正确接收的信道状态信息。当接入点发送轮询触发帧时，站点可以根据反馈分片重传比特位图字段进行信道状态信息的反馈。当接入点只发送触发帧时，则说明接入点之前并未收到站点反馈的任何信息，站点可以从信道状态信息的第一个分片开始向接入点传输。
图9主要介绍AP确定是否要求STA立即进行信道状态信息的反馈时，向STA发送反馈指示消息、高效长训练序列和资源调度消息，以及站点接收反馈指示消息、高效长训练序列和资源调度消息之后，由于AP指示非立即反馈，所以AP向STA反馈确认消息，以及后续AP如何触发STA反馈信道状态信息，使得整个反馈过程在部分站点能力不足以立即反馈信道状态信息时仍可以在后续过程中整体上高效灵活的进行信道状态信息的传输。
方法实施例十：
图10A、图10B和图10C是本发明再一实施例的接入点调度多个站点进行信道状态信息传输的交互图。图10A与图10B、图10C分别从两个不同的角度体现本发明的实施例。图10A体现的是接入点和站点之间进行信息或消息的交互，图10B和图10C体现的是接入点和站点之间进行帧的交互，其实质是一样的，帧中携带信息或消息。
1001，AP向STA发送第一资源调度消息、反馈指示消息和高效长训练序列。
这里的STA可以为图10中的STA1和STA2，还可以包括其他的STA，这里未画出。接入点可以向多个站点广播发送NDPA、NDP和trigger帧三者的结合帧，并利用结合帧中字段来携带第一资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行反馈。结合帧中包括用于指示是否立即反馈的指示信息，例如，可以将指示信息携带在NDPA或trigger帧中。
1002，STA向AP返回信道状态信息或确认消息。
站点可以接收接入点发送的第一资源调度消息、反馈指示消息和高效长训练序列，可以对信道状态信息进行估计，并可以向接入点反馈信道状态信息或确认消息。一般地，当接入点指示站点立即反馈时，站点可以向接入点反馈信道状态信息。当接入点指示站点非立即反馈时，站点可以先反馈确认消息，表示已收到第一资源调度消息、反馈指示消息和高效长训练序列。
接入点的指示信息可以为指示所有站点进行立即反馈或非立即反馈，也可以对每个站点分别进行指示，即指示部分站点进行立即反馈，部分站点进行非立即反馈。站点可以根据指示向接入点反馈信道状态信息或确认消息。
1003，AP向STA发送第二资源调度消息和轮询调度消息。
接入点接收站点发送的信道状态信息或确认消息之后，可以继续向站点发送第二资源调度消息和轮询调度消息，以调度站点继续反馈信道状态信息，直到完全反馈成功为止。
1004，STA向AP返回未成功反馈的信道状态信息。
站点接收接入点发送的第二资源调度消息和轮询调度消息之后，向接入点继续反馈未成功反馈的信道状态信息。
本发明实施例中STA1和STA2均可以为任意一个站点，STA2执行的流程可以由STA1执行，同理，STA1执行的流程也可以由STA2执行。本发明只是为了描述方便，以STA1和STA2对站点予以区分，并不限定本发明的保护范围。
图10B中的流程图显示的步骤与图10A中流程图显示的步骤一一对应。图10B为接入点指示所有站点进行立即反馈的情形。当接入点对站点1和2均指示立即反馈时，站点1和站点2立即反馈波束成形报告。其中，波束成形报告为信道状态信息的载体。接入点还可以通过继续发送波束成形报告轮询帧和触发帧的结合帧继续调度未成功反馈的信道状态信息。
图10C中的流程图显示的步骤与图10A中流程图显示的步骤一一对应。图10C为接入点指示所部分站点进行非立即反馈，指示部分站点进行立即反馈的情形。当接入点指示站点1非立即反馈时，站点1可以反馈确认消息。当接入点指示站点2立即反馈时，站点2可以反馈波束成形报告。其中，波束成形报告为信道状态信息的载体。接入点还可以通过继续发送波束成形报告轮询帧和触发帧的结合帧继续调度未成功反馈的信道状态信息。
图10主要介绍AP向STA发送反馈指示消息、高效长训练序列和资源 调度消息，以及站点接收反馈指示消息、高效长训练序列和资源调度消息之后，可以根据AP的指示反馈信道状态信息或确认消息。以及后续AP如何触发STA继续传输未成功反馈信道状态信息，使得整个反馈过程在STA反馈信道状态信息的资源不足时，可以先反馈一部分信道状态信息，在接收到AP继续反馈其它部分的信道状态信息的资源调度消息之后再继续反馈未成功的反馈的信道状态信息，直至AP完全接收到STA的信道状态信息。
本发明实施例中，接入点可以针对不同的站点分别进行指示立即反馈或非立即反馈，站点的执行流程按照接入点的指示分别进行，在此不再一一叙述。
下面结合图11和图12介绍本发明实施例中用到的波束成形报告轮询帧和触发帧的结合帧的具体结构。
实施例十一：
图11是本发明一个实施例的基于触发帧设计的波束成形报告轮询帧和触发帧的结合帧的结构图。
图11的结合帧是基于触发帧设计的，可以对原有的触发帧进行复用。图11的结合帧包括帧控制字段、波束成形报告轮询类型指示字段、资源分配重用指示字段、站点标识字段、资源分配信息字段、反馈分片重传比特位图字段。
其中，帧控制字段可以用来指示该帧可以用于资源调度。波束成形报告轮询类型指示字段可以用来指示帧的类型可以用来对波束成形报告进行轮询。具体地，反馈分片重传比特位图字段可以用来指示传输哪几个分片。资源分配信息字段可以包括资源调度消息。资源分配重用指示可以用来指示该帧所指示的通信资源与上一次传输所用的通信资源是否相同。当该帧所指示的通信资源与上一次传输所用的通信资源相同时，可以不需要资源分配信息字段，而直接使用上一次传输时的通信资源进行传输。当该帧所指示的通信资源与上一次传输所用的通信资源不同时，可以使用该帧中资源分配信息字段中包括的资源调度消息所包括的通信资源进行传输。站点标识字段用来指示需要向接入点反馈信道状态信息的站点。
实施例十二：
图12是本发明另一实施例的基于波束成形报告轮询帧设计的波束成形报告轮询帧和触发帧的结合帧的结构图。
图12的结合帧是基于波束成形报告轮询帧设计的，可以对原有的波束成形报告轮询帧进行复用。图12的结合帧包括帧控制字段、时长字段、接收地址字段、发送地址字段、反馈分片重传比特位图字段、关联地址字段、每个站点的反馈分片重传比特位图字段和校验序列字段。
其中，帧控制字段可以用来指示该帧可以用于波束成形报告的轮询。关联地址字段用来指示被轮询的站点的标识符。原有波束成形报告轮询帧字段中的反馈分片重传比特位图字段可以用来指示该帧的类型为波束成形报告轮询帧和触发帧的结合帧。资源分配信息字段可以包括资源调度消息。资源分配重用指示可以用来指示该帧所指示的通信资源与上一次传输所用的通信资源是否相同。当该帧所指示的通信资源与上一次传输所用的通信资源相同时，可以不需要资源分配信息字段，而直接使用上一次传输时的通信资源进行传输。当该帧所指示的通信资源与上一次传输所用的通信资源不同时，可以使用该帧中资源分配信息字段中包括的资源调度消息所包括的通信资源进行传输。
上文中结合图1B到图12，分别从站点和接入点的角度详细描述了根据本发明实施例的用于传输信道状态信息的方法，下面将结合图13到图19详细描述了根据本发明实施例的用于传输信道状态信息的接入点和站点。
装置实施例一：
图13是本发明一个实施例的一种传输信道状态信息的站点的示意图。图13的站点包括第一接收单元11和第一发送单元12。
其中，第一接收单元11用于接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA。高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA针对反馈指示消息、高效长训练序列和第一资源调度消息进行反馈时所使用的第一通信资源。
第一发送单元12用于当解析接收单元接收的反馈指示消息并确定属于目标STA时，通过第一通信资源向所述AP发送所述确认消息。确认消息用于指示已收到反馈指示消息、高效长训练序列和第一资源调度消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入 点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，发送单元具体用于当目标STA不支持立即反馈第一信道状态信息时，在接收反馈指示消息、高效长训练序列和第一资源调度消息的X帧间距XIFS之后通过第一通信资源向AP发送确认消息。
可选地，作为本发明的一个实施例，站点还包括第一确定单元。第一确定单元用于根据高效长训练序列确定第一信道状态信息。
可选地，作为本发明的一个实施例，站点还包括第二接收单元和第二发送单元。第二接收单元用于接收AP发送的第二资源调度消息。第二资源调度消息用于指示STA反馈第二信道状态信息时所使用的第二通信资源。第二发送单元用于通过第二通信资源向所述AP发送第二信道状态信息。第二信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，站点还包括第三接收单元和第三发送单元。第三接收单元用于接收AP发送的第一轮询调度消息和第三资源调度消息。第一轮询调度消息用于AP向STA索取第三信道状态信息，第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第三资源调度消息用于指示STA反馈所述第三信道状态信息时所使用的第三通信资源。第三发送单元用于通过第三通信资源向AP发送第三信道状态信息。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的触发trigger帧。其中，trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段，trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种，第三资源调度消息位于第一资源分配信息字段，第一轮询调度消息位于第一反馈分片重传比特位图字段，第一资源分配重用指示字段用于指示第三资源调度消息与第二资源调度消息是否相同。
可选地，作为本发明的一个实施例，trigger帧还包括目标STA的标识字 段。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧，BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段，BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种，其中，第三资源调度消息位于第二资源分配信息字段，第一轮询调度消息位于第三反馈分片重传比特位图字段，第三资源调度消息的指示信息位于第二资源分配重用指示字段。
可选地，作为本发明的一个实施例，BF Report Poll帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，用下列任一方式指示BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:接收地址字段、第二反馈分片重传比特位图字段、BF Report Poll帧的长度。
可选地，作为本发明的一个实施例，站点还包括第二确定单元，其中第二确定单元用于根据下列条件中的至少一个确定STA不支持立即反馈第一信道状态信息：STA的自身能力不足、STA缓存第一信道状态信息的优先级低于第一阈值和所述第一通信资源的资源块的大小小于门限值。
根据本发明实施例的传输信道状态信息的站点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该站点中的各个单元/模块和上述其他操作和/或功能分别为了实现图1B中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例二：
图14是本发明另一实施例的一种传输信道状态信息的接入点的示意图。
图14的接入点包括第一发送单元21和第一接收单元22。
第一发送单元21用于向站点STA发送反馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要反馈信道状态信息的至少两个目标STA。高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA针对所述反馈指示消息、高效长训练序列和第一资源调度消息进行反馈时所使用的第一通信资源。
第一接收单元22用于接收目标STA通过第一发送单元发送的第一资源调度消息所指示的第一通信资源发送的述确认消息。确认消息用于指示目标 已收到反馈指示消息、高效长训练序列和第一资源调度消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，第一接收单元具体用于接收不支持立即反馈信道状态信息的目标STA在接收反馈指示消息、高效长训练序列和第一资源调度消息的X帧间距XIFS之后，通过第一通信资源发送的确认消息。
可选地，作为本发明的一个实施例，接入点还包括第二发送单元和第二接收单元。第二发送单元用于向目标STA发送第二资源调度消息。第二资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第二通信资源。第二接收单元用于接收目标STA通过所述第二通信资源发送的第二信道状态信息。第二信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，接入点还包括第三发送单元和第三接收单元。第三发送单元用于向所述目标STA发送第一轮询调度消息和第三资源调度消息。第一轮询调度消息用于向所述目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在述第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第三资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第三通信资源。第三接收单元用于接收目标STA通过第三通信资源发送的第三信道状态信息。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的触发trigger帧。trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段，trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种。第三资源调度消息位于第一资源分配信息字段，第一轮询调度消息位于第一反馈分片重传比特位图字段，第一资源分配重用指示字段用于指示第三资源调度消息与第二资源调度消息是否相同。
可选地，作为本发明的一个实施例，trigger帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧。BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段。BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种。第三资源调度消息位于第二资源分配信息字段，第一轮询调度消息位于第三反馈分片重传比特位图字段，第三资源调度消息的指示信息位于第二资源分配重用指示字段。
可选地，作为本发明的一个实施例，BF Report Poll帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，用下列任一方式指示所述BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:接收地址字段、第二反馈分片重传比特位图字段、BF Report Poll帧的长度。
可选地，作为本发明的一个实施例，不支持立即反馈所述第一信道状态信息的目标STA包括下列条件中的至少一个：目标STA的自身能力不足、目标STA缓存所述第一信道状态信息的优先级低于第一阈值和第一通信资源的资源块的大小小于门限值。
根据本发明实施例的传输信道状态信息的接入点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该接入点中的各个单元/模块和上述其他操作和/或功能分别为了实现图2中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例三：
图15是本发明再一实施例的一种传输信道状态信息的站点的示意图。
图15的站点包括第一接收单元31和第一发送单元32。
第一接收单元31用于接收接入点AP根据第一指示信息发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列。其中，第一反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA。第一资源调度消息或第一反馈指示消息包括第一指示信息。第一指示信息用于指示目标STA是否立即反馈信道状态信息。第一高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA反馈第 二信道状态信息或确认消息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的部分或全部。确认消息用于指示已收到第一反馈指示消息、第一高效长训练序列和第一资源调度消息。
第一发送单元32用于当根据第一接收单元接收的反馈指示消息确定属于目标STA时，根据第一接收单元接收的高效长训练序列进行信道估计，以确定第一信道状态信息，并通过第一接收单元接收的第一资源调度消息所指示的第一通信资源向AP发送第二信道状态信息或确认消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，接入点可以指示站点是否立即反馈，站点可以根据接入点的指示向接入点反馈信道状态信息或确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，第一接收单元具体用于当第一指示信息指示STA不立即反馈信道状态信息时，在接收到AP发送的第一反馈指示消息和第一高效长训练序列X帧间距XIFS之后接收到第一资源调度消息。第一反馈指示消息包括第一指示信息。第一发送单元具体用于在接收第一资源调度消息X帧间距XIFS之后，根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源向所述AP发送第二信道状态信息。
可选地，作为本发明的一个实施例，站点还包括第二接收单元和第二发送单元。第二接收单元用于接收所述AP发送的第一轮询调度消息和第二资源调度消息。第一轮询调度消息用于向STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第二资源调度消息用于指示STA反馈所述第三信道状态信息时所使用的第二通信资源。第二发送单元用于通过第二通信资源向所述AP发送第三信道状态信息。
可选地，作为本发明的一个实施例，第一发送单元具体用于当第一指示信息指示所述STA不立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后，通过第一通信资源向所AP发送确认消息。
可选地，作为本发明的一个实施例，站点还包括第三接收单元和第三发 送单元。第三接收单元用于接收AP发送的第三资源调度消息。第三资源调度消息用于指示STA反馈第四信道状态信息时所使用的第三通信资源。第三发送单元用于通过第三通信资源发送第四信道状态信息，第四信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，站点还包括第四接收单元和第四发送单元。第四接收单元用于接收所述AP发送的第二轮询调度消息和第四资源调度消息。第二轮询调度消息用于向STA索取第五信道状态信息。第二轮询调度消息包括第五信道状态信息在第一信道状态信息中的片段信息。第五信道状态信息为第一信道状态信息除去第四信道状态信息之后的部分或全部。第四资源调度消息用于指示述目标STA反馈第五信道状态信息时所使用的第四通信资源。第四发送单元用于通过第四通信资源向AP发送第五信道状态信息。
可选地，作为本发明的一个实施例，第一发送单元具体用于当第一指示信息指示STA立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后，通过第一通信资源向所述AP发送第二信道状态信息。
可选地，作为本发明的一个实施例，站点还包括第五接收单元和第五发送单元。第五接收单元用于接收AP发送的第三轮询调度消息和第五资源调度消息。第三轮询调度消息用于向STA索取第六信道状态信息。第三轮询调度消息包括第六信道状态信息在第一信道状态信息中的片段信息。第六信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第五资源调度消息用于指示目标STA反馈第六信道状态信息时所使用的第五通信资源。第五发送单元用于通过第五通信资源向所述AP发送第六信道状态信息。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示STA反馈信道状态信息的时间的字段。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示所有STA或分别指示每个STA是否立即反馈信道状态信息的字段。
可选地，作为本发明的一个实施例，第一发送单元具体用于发送第一反馈指示消息和第一高效长训练序列之后再发送第一资源调度消息时，第一指示信息用于指示非立即反馈。
可选地，作为本发明的一个实施例，当第一通信资源中资源块的大小小 于第一阈值或者第一通信资源中资源块所使用的空间流的数目小于第二阈值时，第一指示信息用于指示非立即反馈。当第一通信资源中资源块的大小大于或者等于第一阈值或者第一通信资源中资源块所使用的空间流的数目大于或者等于第二阈值时，第一指示信息用于指示立即反馈。
可选地，作为本发明的一个实施例，第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息处于不同的帧。
可选地，作为本发明的一个实施例，第一轮询调度消息和第二资源调度消息处于同一数据包；或者，第二轮询调度消息和第四资源调度消息处于同一数据包；或者，第三轮询调度消息和第五资源调度消息处于同一数据包。
根据本发明实施例的传输信道状态信息的站点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该站点中的各个单元/模块和上述其他操作和/或功能分别为了实现图3中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例四：
图16是本发明再一实施例的一种传输信道状态信息的接入点的示意图。
图16的接入点包括确定单元41、第一发送单元42和第一接收单元43。
确定单元41用于确定第一指示信息，所述第一指示信息用于指示需要向接入点AP反馈信道状态信息的至少两个目标站点STA是否立即反馈信道状态信息。
第一发送单元42用于根据确定单元确定的第一指示信息向目标STA发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列。其中，第一资源调度消息或第一反馈指示消息包括第一指示信息。第一反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA。第一高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的部分或全部。确认消息用于指示已收到第一反馈指示消息、第一高效长训练序列和第一资源调度消息。
第一接收单元43用于接收目标STA根据第一发送单元发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息或确认消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高 效长训练序列，以调度多个站点进行信道状态信息的传输，接入点可以指示站点是否立即反馈，站点可以根据接入点的指示向接入点反馈信道状态信息或确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，第一发送单元具体用于当第一指示信息指示目标STA不立即反馈信道状态信息时，在发送第一反馈指示消息和第一高效长训练序列X帧间距XIFS之后再发送第一资源调度消息。第一反馈指示消息包括所述第一指示信息。第一接收单元具体用于在发送第一资源调度消息的X帧间距XIFS之后接收STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息。
可选地，作为本发明的一个实施例，接入点还包括第二发送单元和第二接收单元。第二发送单元用于发送第一轮询调度消息和第二资源调度消息。第一轮询调度消息用于向目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第二资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第二通信资源。第二接收单元用于接收所述目标STA通过所述第二通信资源发送的所述第三信道状态信息。
可选地，作为本发明的一个实施例，第一接收单元具体用于当第一指示信息指示目标STA不立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的确认消息。
可选地，作为本发明的一个实施例，接入点还包括第三发送单元和第三接收单元。第三发送单元用于发送第三资源调度消息。第三资源调度消息用于指示目标STA反馈第四信道状态信息时所使用的第三通信资源。第三接收单元用于接收目标STA通过第三通信资源发送的第四信道状态信息，第四信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，接入点还包括第四发送单元和第四接收单元。第四发送单元用于发送第二轮询调度消息和第四资源调度消息。第二轮询调度消息用于向目标STA索取第五信道状态信息。第二轮询调度 消息包括第五信道状态信息在第一信道状态信息中的片段信息。第五信道状态信息为第一信道状态信息除去第四信道状态信息之后的部分或全部。第四资源调度消息用于指示目标STA反馈第五信道状态信息时所使用的第四通信资源。第四接收单元用于接收目标STA通过第四通信资源发送的第五信道状态信息。
可选地，作为本发明的一个实施例，第一接收单元具体用于当所述第一指示信息指示所述目标STA立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息。
可选地，作为本发明的一个实施例，接入点还包括第五发送单元和第五接收单元。第五发送单元用于发送第三轮询调度消息和第五资源调度消息。第三轮询调度消息用于向目标STA索取第六信道状态信息。第三轮询调度消息包括第六信道状态信息在第一信道状态信息中的片段信息。第六信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第五资源调度消息用于指示目标STA反馈第六信道状态信息时所使用的第五通信资源。第五接收单元用于接收所述目标STA通过所述第五通信资源发送的所述第六信道状态信息。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示目标STA反馈信道状态信息的时间的字段。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示所有目标STA或分别指示每个目标STA是否立即反馈信道状态信息的字段。
可选地，作为本发明的一个实施例，当发送第一反馈指示消息和第一高效长训练序列之后再发送第一资源调度消息时，第一指示信息用于指示非立即反馈。
可选地，作为本发明的一个实施例，当第一通信资源中资源块的大小小于第一阈值或者第一通信资源中资源块所使用的空间流的数目小于第二阈值时，第一指示信息用于指示非立即反馈。当第一通信资源中资源块的大小大于或者等于第一阈值或者所述第一通信资源中资源块所使用的空间流的数目大于或者等于第二阈值时，第一指示信息用于指示立即反馈。
可选地，作为本发明的一个实施例，第一反馈指示消息、第一高效长训 练序列和第一资源调度消息处于不同的帧。
可选地，作为本发明的一个实施例，第一轮询调度消息和第二资源调度消息处于同一数据包。或者，第二轮询调度消息和第四资源调度消息处于同一数据包。或者，第三轮询调度消息和第五资源调度消息处于同一数据包。
根据本发明实施例的传输信道状态信息的接入点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该接入点中的各个单元/模块和上述其他操作和/或功能分别为了实现图4中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例五：
图17是本发明再一实施例的一种传输信道状态信息的站点的示意图。
图17的站点包括第一接收单元51、第一发送单元52、第二接收单元53和第二发送单元54。
第一接收单元51用于接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA。高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的一部分。
第一发送单元52用于当根据第一接收单元接收的反馈指示消息确定属于目标STA时，根据第一接收单元接收的高效长训练序列进行信道估计，得到第一信道状态信息，并通过第一接收单元接收的第一资源调度消息指示的第一通信资源向所述AP发送第二信道状态信息。
第二接收单元53用于接收AP发送的第一轮询调度消息和第二资源调度消息。其中，第一轮询调度消息用于AP向目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第三资源调度消息用于指示目标STA反馈所述第三信道状态信息时所使用的第二通信资源。
第二发送单元54用于通过第二接收单元接收的第二资源调度消息指示的第二通信资源向所述AP发送第三信道状态信息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入 点反馈信道状态信息，接入点还可以继续发送轮询调度消息和资源调度消息，以触发站点继续向接入点反馈未成功反馈的信道状态信息，这样能够避免资源不足以一次性反馈造成的资源浪费，进而能够提高信道状态信息的传输效率。
根据本发明实施例的传输信道状态信息的站点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该站点中的各个单元/模块和上述其他操作和/或功能分别为了实现图5中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例六：
图18是本发明再一实施例的一种传输信道状态信息的接入点的示意图。
图18的接入点包括第一发送单元61、第一接收单元62、第二发送单元63和第二接收单元64。
第一发送单元61用于向站点STA发送反馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA。高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的一部分.
第一接收单元62用于接收目标STA通过第一发送单元发送的第一资源调度消息指示的第一通信资源发送的第二信道状态信息。
第二发送单元63用于向目标STA发送第一轮询调度消息和第二资源调度消息。其中，第一轮询调度消息用于向述目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第三资源调度消息用于指示目标STA反馈所述第三信道状态信息时所使用的第二通信资源。
第二接收单元64用于接收目标STA通过第二发送单元发送的第二资源调度消息指示的第二通信资源发送的第三信道状态信息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈信道状态信息，接入点还可以继续发送轮询调度消息和资源调度消息，以触发站点继续向接入点反馈未成功反馈的信道状态信息，这样能够避 免资源不足以一次性反馈造成的资源浪费，进而能够提高信道状态信息的传输效率。
根据本发明实施例的传输信道状态信息的接入点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该接入点中的各个单元/模块和上述其他操作和/或功能分别为了实现图6中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例七：
图19是本发明一个实施例的一种传输信道状态信息的装置的示意图。
图19的装置70包括发射机71、接收机72、处理器73和存储器74。处理器73控制装置70的操作，并可用于处理信号。存储器74可以包括只读存储器和随机存取存储器，并向处理器73提供指令和数据。发射机71和接收机72可以耦合到天线75。装置70的各个组件通过总线系统75耦合在一起，其中总线系统75除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统75。
上述本发明实施例揭示的方法可以应用于处理器73中，或者由处理器73实现。在实现过程中，上述方法的各步骤可以通过处理器73中的硬件的集成逻辑电路或者软件形式的指令完成。处理器73可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器74，处理器73读取存储器74中的信息，结合其硬件完成上述方法的步骤。
具体地，当装置70为站点时，接收机72可以接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA。高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA 针对反馈指示消息、高效长训练序列和第一资源调度消息进行反馈时所使用的第一通信资源。
发射机71可以当根据接收的反馈指示消息确定属于目标STA时，通过第一通信资源向AP发送所述确认消息。确认消息用于指示已收到反馈指示消息、高效长训练序列和第一资源调度消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，发射机71可以当目标STA不支持立即反馈第一信道状态信息时，在接收反馈指示消息、高效长训练序列和第一资源调度消息的X帧间距XIFS之后通过第一通信资源向AP发送确认消息。
可选地，作为本发明的一个实施例，处理器73可以用于根据高效长训练序列确定第一信道状态信息。
可选地，作为本发明的一个实施例，接收机72用于接收AP发送的第二资源调度消息。第二资源调度消息用于指示STA反馈第二信道状态信息时所使用的第二通信资源。发射机71可以用于通过第二通信资源向所述AP发送第二信道状态信息。第二信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，接收机72可以接收AP发送的第一轮询调度消息和第三资源调度消息。第一轮询调度消息用于AP向STA索取第三信道状态信息，第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第三资源调度消息用于指示STA反馈所述第三信道状态信息时所使用的第三通信资源。发射机71可以用于通过第三通信资源向AP发送第三信道状态信息。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的触发trigger帧。其中，trigger帧包括第一波束成形 报告轮询类型指示字段和第一反馈分片重传比特位图字段，trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种，第三资源调度消息位于第一资源分配信息字段，第一轮询调度消息位于第一反馈分片重传比特位图字段，第一资源分配重用指示字段用于指示第三资源调度消息与第二资源调度消息是否相同。
可选地，作为本发明的一个实施例，trigger帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧，BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段，BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种，其中，第三资源调度消息位于第二资源分配信息字段，第一轮询调度消息位于第三反馈分片重传比特位图字段，第三资源调度消息的指示信息位于第二资源分配重用指示字段。
可选地，作为本发明的一个实施例，BF Report Poll帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，用下列任一方式指示BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:接收地址字段、第二反馈分片重传比特位图字段、BF Report Poll帧的长度。
可选地，作为本发明的一个实施例，站点还包括第二确定单元，其中第二确定单元用于根据下列条件中的至少一个确定STA不支持立即反馈第一信道状态信息：STA的自身能力不足、STA缓存第一信道状态信息的优先级低于第一阈值和所述第一通信资源的资源块的大小小于门限值。
根据本发明实施例的传输信道状态信息的站点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该站点中的各个单元/模块和上述其他操作和/或功能分别为了实现图1B中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例八：
具体地，当装置70为接入点时，发射机71可以用于向站点STA发送反馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要反馈信道状态信息的至少两个目标STA。高效长训练序列用于确定目 标STA的第一信道状态信息。第一资源调度消息用于指示目标STA针对所述反馈指示消息、高效长训练序列和第一资源调度消息进行反馈时所使用的第一通信资源。
接收机72可以接收目标STA通过发送的第一资源调度消息所指示的第一通信资源发送的确认消息。确认消息用于指示目标已收到反馈指示消息、高效长训练序列和第一资源调度消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，接收机72可以接收不支持立即反馈信道状态信息的目标STA在接收反馈指示消息、高效长训练序列和第一资源调度消息的X帧间距XIFS之后，通过第一通信资源发送的确认消息。
可选地，作为本发明的一个实施例，发射机71可以向目标STA发送第二资源调度消息。第二资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第二通信资源。接收机72可以接收目标STA通过所述第二通信资源发送的第二信道状态信息。第二信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，发射机71可以向所述目标STA发送第一轮询调度消息和第三资源调度消息。第一轮询调度消息用于向所述目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在述第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第三资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第三通信资源。接收机72可以接收目标STA通过第三通信资源发送的第三信道状态信息。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包。可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的触发trigger帧。trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段，trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种。第三资源调度消息位于第一资源分配信息字段，第一轮询调度消息 位于第一反馈分片重传比特位图字段，第一资源分配重用指示字段用于指示第三资源调度消息与第二资源调度消息是否相同。
可选地，作为本发明的一个实施例，trigger帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，第一轮询调度消息和第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧。BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段。BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种。第三资源调度消息位于第二资源分配信息字段，第一轮询调度消息位于第三反馈分片重传比特位图字段，第三资源调度消息的指示信息位于第二资源分配重用指示字段。
可选地，作为本发明的一个实施例，BF Report Poll帧还包括目标STA的标识字段。
可选地，作为本发明的一个实施例，用下列任一方式指示所述BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:接收地址字段、第二反馈分片重传比特位图字段、BF Report Poll帧的长度。
可选地，作为本发明的一个实施例，不支持立即反馈所述第一信道状态信息的目标STA包括下列条件中的至少一个：目标STA的自身能力不足、目标STA缓存所述第一信道状态信息的优先级低于第一阈值和第一通信资源的资源块的大小小于门限值。
根据本发明实施例的传输信道状态信息的接入点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该接入点中的各个单元/模块和上述其他操作和/或功能分别为了实现图2中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例九：
具体地，当装置70为站点时，接收机72可以接收接入点AP根据第一指示信息发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列。其中，第一反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA。第一资源调度消息或第一反馈指示消息包括第一指示信息。第一指示信息用于指示目标STA是否立即反馈信道状态信息。第一高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息 用于指示目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的部分或全部。确认消息用于指示已收到第一反馈指示消息、第一高效长训练序列和第一资源调度消息。
发射机71可以当根据接收的反馈指示消息确定属于目标STA时，根据接收的高效长训练序列进行信道估计，以确定第一信道状态信息，并通过接收的第一资源调度消息所指示的第一通信资源向AP发送第二信道状态信息或确认消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，接入点可以指示站点是否立即反馈，站点可以根据接入点的指示向接入点反馈信道状态信息或确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，接收机72可以用于当第一指示信息指示STA不立即反馈信道状态信息时，在接收到AP发送的第一反馈指示消息和第一高效长训练序列X帧间距XIFS之后接收到第一资源调度消息。第一反馈指示消息包括第一指示信息。发射机71可以用于在接收第一资源调度消息X帧间距XIFS之后，根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源向所述AP发送第二信道状态信息。
可选地，作为本发明的一个实施例，接收机72可以用于接收所述AP发送的第一轮询调度消息和第二资源调度消息。第一轮询调度消息用于向STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第二资源调度消息用于指示STA反馈所述第三信道状态信息时所使用的第二通信资源。发射机71可以用于通过所述第二通信资源向所述AP发送所述第三信道状态信息。
可选地，作为本发明的一个实施例，发射机71可以用于当第一指示信息指示所述STA不立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后，通过第一通信资源向所AP发送确认消息。
可选地，作为本发明的一个实施例，接收机72可以用于接收AP发送的第三资源调度消息。第三资源调度消息用于指示STA反馈第四信道状态信 息时所使用的第三通信资源。发射机71可以用于通过第三通信资源发送第四信道状态信息，第四信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，接收机72可以用于接收所述AP发送的第二轮询调度消息和第四资源调度消息。第二轮询调度消息用于向STA索取第五信道状态信息。第二轮询调度消息包括第五信道状态信息在第一信道状态信息中的片段信息。第五信道状态信息为第一信道状态信息除去第四信道状态信息之后的部分或全部。第四资源调度消息用于指示述目标STA反馈第五信道状态信息时所使用的第四通信资源。发射机71可以通过第四通信资源向AP发送第五信道状态信息。
可选地，作为本发明的一个实施例，发射机71可以用于当第一指示信息指示STA立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后，通过第一通信资源向所述AP发送第二信道状态信息。
可选地，作为本发明的一个实施例，接收机72可以用于接收AP发送的第三轮询调度消息和第五资源调度消息。第三轮询调度消息用于向STA索取第六信道状态信息。第三轮询调度消息包括第六信道状态信息在第一信道状态信息中的片段信息。第六信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第五资源调度消息用于指示目标STA反馈第六信道状态信息时所使用的第五通信资源。发射机71可以用于通过第五通信资源向所述AP发送第六信道状态信息。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示STA反馈信道状态信息的时间的字段。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示所有STA或分别指示每个STA是否立即反馈信道状态信息的字段。
可选地，作为本发明的一个实施例，发射机71可以发送第一反馈指示消息和第一高效长训练序列之后再发送第一资源调度消息时，第一指示信息用于指示非立即反馈。
可选地，作为本发明的一个实施例，当第一通信资源中资源块的大小小于第一阈值或者第一通信资源中资源块所使用的空间流的数目小于第二阈值时，第一指示信息用于指示非立即反馈。当第一通信资源中资源块的大小大于或者等于第一阈值或者第一通信资源中资源块所使用的空间流的数目大于或者等于第二阈值时，第一指示信息用于指示立即反馈。
可选地，作为本发明的一个实施例，第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息处于不同的帧。
可选地，作为本发明的一个实施例，第一轮询调度消息和第二资源调度消息处于同一数据包。或者，第二轮询调度消息和第四资源调度消息处于同一数据包。或者，第三轮询调度消息和第五资源调度消息处于同一数据包。
根据本发明实施例的传输信道状态信息的站点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该站点中的各个单元/模块和上述其他操作和/或功能分别为了实现图3中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例十：
具体地，当装置70为接入点时，处理器73可以确定第一指示信息，所述第一指示信息用于指示需要向接入点AP反馈信道状态信息的至少两个目标站点STA是否立即反馈信道状态信息。
发射机71可以根据确定的第一指示信息向目标STA发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列。其中，第一资源调度消息或第一反馈指示消息包括第一指示信息。第一反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标站点STA。第一高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的部分或全部。确认消息用于指示已收到第一反馈指示消息、第一高效长训练序列和第一资源调度消息。
接收机72可以接收目标STA根据发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息或确认消息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，接入点可以指示站点是否立即反馈，站点可以根据接入点的指示向接入点反馈信道状态信息或确认消息，这样能够避免部分站点不支持立即反馈时造成的资源浪费，进而能够提高信道状态信息的传输效率。
可选地，作为本发明的一个实施例，发射机71可以用于当第一指示信息指示目标STA不立即反馈信道状态信息时，在发送第一反馈指示消息和 第一高效长训练序列X帧间距XIFS之后再发送第一资源调度消息。第一反馈指示消息包括所述第一指示信息。接收机72可以用于在发送第一资源调度消息的X帧间距XIFS之后接收STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的第二信道状态信息。
可选地，作为本发明的一个实施例，发射机71可以用于发送第一轮询调度消息和第二资源调度消息。第一轮询调度消息用于向目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部，第二资源调度消息用于指示目标STA反馈第三信道状态信息时所使用的第二通信资源。接收机72可以用于接收所述目标STA通过所述第二通信资源发送的所述第三信道状态信息。
可选地，作为本发明的一个实施例，接收机72可以用于当第一指示信息指示目标STA不立即反馈信道状态信息时，在发送第一资源调度消息的X帧间距XIFS之后接收目标STA根据第一资源调度消息、第一反馈指示消息和第一高效长训练序列通过第一通信资源发送的确认消息。
可选地，作为本发明的一个实施例，发射机71可以用于发送第三资源调度消息。第三资源调度消息用于指示目标STA反馈第四信道状态信息时所使用的第三通信资源。接收机72可以接收目标STA通过第三通信资源发送的第四信道状态信息，第四信道状态信息为第一信道状态信息的部分或全部。
可选地，作为本发明的一个实施例，发射机71可以用于发送第二轮询调度消息和第四资源调度消息。第二轮询调度消息用于向目标STA索取第五信道状态信息。第二轮询调度消息包括第五信道状态信息在第一信道状态信息中的片段信息。第五信道状态信息为第一信道状态信息除去第四信道状态信息之后的部分或全部。第四资源调度消息用于指示目标STA反馈第五信道状态信息时所使用的第四通信资源。接收机72可以接收目标STA通过第四通信资源发送的第五信道状态信息。
可选地，作为本发明的一个实施例，接收机72可以用于当所述第一指示信息指示所述目标STA立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资 源发送的所述第二信道状态信息。
可选地，作为本发明的一个实施例，发射机71可以用于发送第三轮询调度消息和第五资源调度消息。第三轮询调度消息用于向目标STA索取第六信道状态信息。第三轮询调度消息包括第六信道状态信息在第一信道状态信息中的片段信息。第六信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第五资源调度消息用于指示目标STA反馈第六信道状态信息时所使用的第五通信资源。接收机72可以用于接收所述目标STA通过所述第五通信资源发送的所述第六信道状态信息。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示目标STA反馈信道状态信息的时间的字段。
可选地，作为本发明的一个实施例，第一指示信息包括用于指示所有目标STA或分别指示每个目标STA是否立即反馈信道状态信息的字段。
可选地，作为本发明的一个实施例，当发送第一反馈指示消息和第一高效长训练序列之后再发送第一资源调度消息时，第一指示信息用于指示非立即反馈。
可选地，作为本发明的一个实施例，当第一通信资源中资源块的大小小于第一阈值或者第一通信资源中资源块所使用的空间流的数目小于第二阈值时，第一指示信息用于指示非立即反馈。当第一通信资源中资源块的大小大于或者等于第一阈值或者第一通信资源中资源块所使用的空间流的数目大于或者等于第二阈值时，第一指示信息用于指示立即反馈。
可选地，作为本发明的一个实施例，第一反馈指示消息、第一高效长训练序列和第一资源调度消息处于不同的帧。
可选地，作为本发明的一个实施例，第一轮询调度消息和第二资源调度消息处于同一数据包。或者，第二轮询调度消息和第四资源调度消息处于同一数据包。或者，第三轮询调度消息和第五资源调度消息处于同一数据包。
根据本发明实施例的传输信道状态信息的接入点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该接入点中的各个单元/模块和上述其他操作和/或功能分别为了实现图4中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例十一：
具体地，当装置70为站点时，接收机72可以接收接入点AP发送的反 馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA。高效长训练序列用于确定目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的一部分。
发射机71可以当根据接收的反馈指示消息确定属于目标STA时，根据接收的高效长训练序列进行信道估计，得到第一信道状态信息，并通过接收的第一资源调度消息指示的第一通信资源向所述AP发送第二信道状态信息。
接收机72用于接收AP发送的第一轮询调度消息和第二资源调度消息。其中，第一轮询调度消息用于AP向目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第三资源调度消息用于指示目标STA反馈所述第三信道状态信息时所使用的第二通信资源。
发射机71可以通过接收的第二资源调度消息指示的第二通信资源向AP发送第三信道状态信息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈信道状态信息，接入点还可以继续发送轮询调度消息和资源调度消息，以触发站点继续向接入点反馈未成功反馈的信道状态信息，这样能够避免资源不足以一次性反馈造成的资源浪费，进而能够提高信道状态信息的传输效率。
根据本发明实施例的传输信道状态信息的站点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该站点中的各个单元/模块和上述其他操作和/或功能分别为了实现图5中所示方法的相应流程，为了简洁，在此不再赘述。
装置实施例十二：
具体地，当装置70为接入点时，发射机71可以向站点STA发送反馈指示消息、高效长训练序列和第一资源调度消息。反馈指示消息用于指示需要向AP反馈信道状态信息的至少两个目标STA。高效长训练序列用于确定 目标STA的第一信道状态信息。第一资源调度消息用于指示目标STA反馈第二信道状态信息时所使用的第一通信资源。第二信道状态信息为第一信道状态信息的一部分。
接收机72可以接收目标STA通过发送的第一资源调度消息指示的第一通信资源发送的第二信道状态信息。
发射机71可以向目标STA发送第一轮询调度消息和第二资源调度消息。其中，第一轮询调度消息用于向述目标STA索取第三信道状态信息。第一轮询调度消息包括第三信道状态信息在第一信道状态信息中的片段信息。第三信道状态信息为第一信道状态信息除去第二信道状态信息之后的部分或全部。第三资源调度消息用于指示目标STA反馈所述第三信道状态信息时所使用的第二通信资源。
接收机72可以接收目标STA通过第二资源调度消息指示的第二通信资源发送的第三信道状态信息。
本发明实施例通过接入点向站点发送资源调度消息、反馈指示消息和高效长训练序列，以调度多个站点进行信道状态信息的传输，站点通过向接入点反馈信道状态信息，接入点还可以继续发送轮询调度消息和资源调度消息，以触发站点继续向接入点反馈未成功反馈的信道状态信息，这样能够避免资源不足以一次性反馈造成的资源浪费，进而能够提高信道状态信息的传输效率。
根据本发明实施例的传输信道状态信息的接入点可对应于本发明实施例方法中的传输信道状态信息的方法，并且，该接入点中的各个单元/模块和上述其他操作和/或功能分别为了实现图6中所示方法的相应流程，为了简洁，在此不再赘述。
应理解，在本发明的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
并且，上述各技术术语及英文翻译不限制其对应的各特征，应以各特征的功能作用为准。
本领域普通技术人员可以意识到，结合本文中所公开的实施例中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性 地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
结合本文中所公开的实施例描述的方法或步骤可以用硬件、处理器执行的软件程序，或者二者的结合来实施。软件程序可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
尽管通过参考附图并结合优选实施例的方式对本发明进行了详细描述，但本发明并不限于此。在不脱离本发明的精神和实质的前提下，本领域普通技术人员可以对本发明的实施例进行各种等效的修改或替换，而这些修改或替换都应在本发明的涵盖范围内。

Claims (106)

  1. 一种传输信道状态信息的方法，其特征在于，包括：
    站点STA接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定所述STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；
    所述STA解析所述反馈指示消息并确定属于目标STA时，所述STA通过所述第一通信资源向所述AP发送确认消息，所述确认消息用于指示已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
  2. 如权利要求1所述的方法，其特征在于，所述STA通过所述第一通信资源向所述AP发送确认消息包括：
    当所述STA不支持立即反馈所述第一信道状态信息时，所述STA在接收所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息的X帧间距XIFS之后通过所述第一通信资源向所述AP发送所述确认消息。
  3. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    所述STA根据所述高效长训练序列确定所述第一信道状态信息。
  4. 如权利要求2或3所述的方法，其特征在于，所述方法还包括：
    所述STA接收所述AP发送的第二资源调度消息，其中，所述第二资源调度消息用于指示所述STA反馈第二信道状态信息时所使用的第二通信资源；
    所述STA通过所述第二通信资源向所述AP发送所述第二信道状态信息，所述第二信道状态信息为所述第一信道状态信息的部分或全部。
  5. 如权利要求4所述的方法，其特征在于，所述方法还包括：
    所述STA接收所述AP发送的第一轮询调度消息和第三资源调度消息，其中，所述第一轮询调度消息用于所述AP向所述STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述 STA反馈所述第三信道状态信息时所使用的第三通信资源；
    所述STA通过所述第三通信资源向所述AP发送所述第三信道状态信息。
  6. 如权利要求5所述的方法，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包。
  7. 如权利要求6所述的方法，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的触发trigger帧；
    其中，所述trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段，所述trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种，所述第三资源调度消息位于所述第一资源分配信息字段，所述第一轮询调度消息位于所述第一反馈分片重传比特位图字段，所述第一资源分配重用指示字段用于指示所述第三资源调度消息与所述第二资源调度消息是否相同。
  8. 如权利要求7所述的方法，其特征在于，所述trigger帧还包括所述目标STA的标识字段。
  9. 如权利要求6所述的方法，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧，所述BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段，所述BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种，其中，所述第三资源调度消息位于所述第二资源分配信息字段，所述第一轮询调度消息位于所述第三反馈分片重传比特位图字段，所述第三资源调度消息的指示信息位于所述第二资源分配重用指示字段。
  10. 如权利要求9所述的方法，其特征在于，所述BF Report Poll帧还包括所述目标STA的标识字段。
  11. 如权利要求9或10所述的方法，其特征在于，用下列任一方式指示所述BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:所述接收地址字段、所述第二反馈分片重传比特位图字段、所述BF Report Poll帧的长度。
  12. 如权利要求2-11中任一项所述的方法，其特征在于，所述方法还包括：
    根据下列条件中的至少一个确定所述STA不支持立即反馈所述第一信道状态信息：所述STA的自身能力不足、所述STA缓存所述第一信道状态信息的优先级低于第一阈值和所述第一通信资源的资源块的大小小于门限值。
  13. 一种传输信道状态信息的方法，其特征在于，包括：
    发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；
    接收所述目标STA通过所述第一通信资源发送的确认消息，所述确认消息用于指示所述目标STA已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
  14. 如权利要求13所述的方法，其特征在于，所述接收所述目标STA通过所述第一通信资源发送的确认消息包括：
    接收不支持立即反馈所述第一信道状态信息的目标STA在接收所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息的X帧间距XIFS之后，通过所述第一通信资源发送的所述确认消息。
  15. 如权利要求14所述的方法，其特征在于，所述方法还包括：
    发送第二资源调度消息，其中，所述第二资源调度消息用于指示所述目标STA反馈第二信道状态信息时所使用的第二通信资源；
    接收所述目标STA通过所述第二通信资源发送的所述第二信道状态信息，所述第二信道状态信息为所述第一信道状态信息的部分或全部。
  16. 如权利要求15所述的方法，其特征在于，所述方法还包括：
    发送第一轮询调度消息和第三资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述目标STA反馈所述第三信道状态信息时所使用的第三通信资源；
    接收所述目标STA通过所述第三通信资源发送的所述第三信道状态信 息。
  17. 如权利要求16所述的方法，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包。
  18. 如权利要求17所述的方法，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的触发trigger帧；
    其中，所述trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段，所述trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种，所述第三资源调度消息位于所述第一资源分配信息字段，所述第一轮询调度消息位于所述第一反馈分片重传比特位图字段，所述第一资源分配重用指示字段用于指示所述第三资源调度消息与所述第二资源调度消息是否相同。
  19. 如权利要求18所述的方法，其特征在于，所述trigger帧还包括所述目标STA的标识字段。
  20. 如权利要求17所述的方法，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧，所述BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段，所述BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种，其中，所述第三资源调度消息位于所述第二资源分配信息字段，所述第一轮询调度消息位于所述第三反馈分片重传比特位图字段，所述第三资源调度消息的指示信息位于所述第二资源分配重用指示字段。
  21. 如权利要求20所述的方法，其特征在于，所述BF Report Poll帧还包括所述目标STA的标识字段。
  22. 如权利要求20或21所述的方法，其特征在于，用下列任一方式指示所述BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:所述接收地址字段、所述第二反馈分片重传比特位图字段、所述BF Report Poll帧的长度。
  23. 如权利要求13-22中任一项所述的方法，其特征在于，所述不支持立即反馈所述第一信道状态信息的目标STA包括下列条件中的至少一个：所述目标STA的自身能力不足、所述目标STA缓存所述第一信道状态信息的优先级低于第一阈值和所述第一通信资源的资源块的大小小于门限值。
  24. 一种传输信道状态信息的方法，其特征在于，包括：
    接收接入点AP根据第一指示信息发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信息，所述第一指示信息用于指示所述STA是否立即反馈信道状态信息，所述第一高效长训练序列用于确定所述STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；
    当解析所述反馈指示消息并确定属于所述目标STA时，根据所述高效长训练序列进行信道估计，以确定所述第一信道状态信息，并通过所述第一通信资源向所述AP发送所述第二信道状态信息或所述确认消息。
  25. 如权利要求24所述的方法，其特征在于，所述接收接入点AP根据第一指示信息发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列包括：
    当所述第一指示信息指示所述STA不立即反馈信道状态信息时，在接收到所述AP发送的所述第一反馈指示消息和所述第一高效长训练序列的X帧间距XIFS之后接收到所述第一资源调度消息，所述第一反馈指示消息包括所述第一指示信息；
    其中，所述通过所述第一通信资源向所述AP发送所述第二信道状态信息或所述确认消息包括：在接收所述第一资源调度消息的X帧间距XIFS之后，通过所述第一通信资源向所述AP发送所述第二信道状态信息。
  26. 如权利要求25所述的方法，其特征在于，所述方法还包括：
    接收所述AP发送的第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第二资源调度消息用于指示所述STA反馈所述第三信道状态信息时所使用的第二通信资源；
    通过所述第二通信资源向所述AP发送所述第三信道状态信息。
  27. 如权利要求24所述的方法，其特征在于，所述通过所述第一通信资源向所述AP发送所述第二信道状态信息或所述确认消息包括：
    当所述第一指示信息指示所述STA不立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后，通过所述第一通信资源向所述AP发送所述确认消息。
  28. 如权利要求27所述的方法，其特征在于，所述方法还包括：
    接收所述AP发送的第三资源调度消息，其中，所述第三资源调度消息用于指示所述STA反馈第四信道状态信息时所使用的第三通信资源；
    通过所述第三通信资源发送所述第四信道状态信息，所述第四信道状态信息为所述第一信道状态信息的部分或全部。
  29. 如权利要求28所述的方法，其特征在于，所述方法还包括：
    接收所述AP发送的第二轮询调度消息和第四资源调度消息，其中，所述第二轮询调度消息用于向所述STA索取第五信道状态信息，所述第二轮询调度消息包括所述第五信道状态信息在所述第一信道状态信息中的片段信息，所述第五信道状态信息为所述第一信道状态信息除去所述第四信道状态信息之后的部分或全部，所述第四资源调度消息用于指示所述STA反馈所述第五信道状态信息时所使用的第四通信资源；
    通过所述第四通信资源向所述AP发送所述第五信道状态信息。
  30. 如权利要求24所述的方法，其特征在于，所述通过所述第一通信资源向所述AP发送所述第二信道状态信息或所述确认消息包括：
    当所述第一指示信息指示所述STA立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后，通过所述第一通信资源向所述AP发送所述第二信道状态信息。
  31. 如权利要求30所述的方法，其特征在于，所述方法还包括：
    接收所述AP发送的第三轮询调度消息和第五资源调度消息，其中，所述第三轮询调度消息用于向所述STA索取第六信道状态信息，所述第三轮询调度消息包括所述第六信道状态信息在所述第一信道状态信息中的片段信息，所述第六信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第五资源调度消息用于指示所述STA反馈所述第六信道状态信息时所使用的第五通信资源；
    通过所述第五通信资源向所述AP发送所述第六信道状态信息。
  32. 如权利要求24-31中任一项所述的方法，其特征在于，所述第一指示信息包括用于指示所述STA反馈信道状态信息的时间的字段。
  33. 如权利要求24-31中任一项所述的方法，其特征在于，所述第一指示信息包括用于指示所有STA或分别指示每个STA是否立即反馈信道状态信息的字段。
  34. 如权利要求24-31中任一项所述的方法，其特征在于，当向所述STA发送所述第一反馈指示消息和所述第一高效长训练序列之后再发送所述第一资源调度消息时，所述第一指示信息用于指示非立即反馈。
  35. 如权利要求24-31中任一项所述的方法，其特征在于，当所述第一通信资源中资源块的大小小于第一阈值或者所述第一通信资源中资源块所使用的空间流的数目小于第二阈值时，所述第一指示信息用于指示非立即反馈；
    当所述第一通信资源中资源块的大小大于或者等于所述第一阈值或者所述第一通信资源中资源块所使用的空间流的数目大于或者等于所述第二阈值时，所述第一指示信息用于指示立即反馈。
  36. 如权利要求27-29中任一项所述的方法，其特征在于，
    所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息处于不同的帧。
  37. 如权利要求26、29、31中任一项所述的方法，其特征在于，
    第一轮询调度消息和第二资源调度消息处于同一数据包；或者，
    第二轮询调度消息和第四资源调度消息处于同一数据包；或者，
    第三轮询调度消息和第五资源调度消息处于同一数据包。
  38. 一种传输信道状态信息的方法，其特征在于，包括：
    确定第一指示信息，所述第一指示信息用于指示需要向接入点AP反馈信道状态信息的至少两个目标站点STA是否立即反馈信道状态信息；
    根据所述第一指示信息发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信息，所述第一反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述第一高效长训练序列用于确定所述目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目 标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；
    接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息或所述确认消息。
  39. 如权利要求38所述的方法，其特征在于，所述根据所述第一指示信息发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列包括：
    当所述第一指示信息指示所述目标STA不立即反馈信道状态信息时，在发送所述第一反馈指示消息和所述第一高效长训练序列的X帧间距XIFS之后再发送所述第一资源调度消息，其中，所述第一反馈指示消息包括所述第一指示信息；
    其中，所述接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息或所述确认消息包括：
    在发送所述第一资源调度消息的X帧间距XIFS之后接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息。
  40. 如权利要求39所述的方法，其特征在于，所述方法还包括：
    发送第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第二资源调度消息用于指示所述目标STA反馈所述第三信道状态信息时所使用的第二通信资源；
    接收所述目标STA通过所述第二通信资源发送的所述第三信道状态信息。
  41. 如权利要求38所述的方法，其特征在于，所述接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练 序列通过所述第一通信资源发送的所述第二信道状态信息或所述确认消息包括：
    当所述第一指示信息指示所述目标STA不立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述确认消息。
  42. 如权利要求41所述的方法，其特征在于，所述方法还包括：
    发送第三资源调度消息，其中，所述第三资源调度消息用于指示所述目标STA反馈第四信道状态信息时所使用的第三通信资源；
    接收所述目标STA通过所述第三通信资源发送的所述第四信道状态信息，所述第四信道状态信息为所述第一信道状态信息的部分或全部。
  43. 如权利要求42所述的方法，其特征在于，所述方法还包括：
    发送第二轮询调度消息和第四资源调度消息，其中，所述第二轮询调度消息用于向所述目标STA索取第五信道状态信息，所述第二轮询调度消息包括所述第五信道状态信息在所述第一信道状态信息中的片段信息，所述第五信道状态信息为所述第一信道状态信息除去所述第四信道状态信息之后的部分或全部，所述第四资源调度消息用于指示所述目标STA反馈所述第五信道状态信息时所使用的第四通信资源；
    接收所述目标STA通过所述第四通信资源发送的所述第五信道状态信息。
  44. 如权利要求38所述的方法，其特征在于，所述接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息或所述确认消息包括：
    当所述第一指示信息指示所述目标STA立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息。
  45. 如权利要求44所述的方法，其特征在于，所述方法还包括：
    发送第三轮询调度消息和第五资源调度消息，其中，所述第三轮询调度消息用于向所述目标STA索取第六信道状态信息，所述第三轮询调度消息 包括所述第六信道状态信息在所述第一信道状态信息中的片段信息，所述第六信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第五资源调度消息用于指示所述目标STA反馈所述第六信道状态信息时所使用的第五通信资源；
    接收所述目标STA通过所述第五通信资源发送的所述第六信道状态信息。
  46. 如权利要求38-45中任一项所述的方法，其特征在于，所述第一指示信息包括用于指示所述目标STA反馈信道状态信息的时间的字段。
  47. 如权利要求38-45中任一项所述的方法，其特征在于，所述第一指示信息包括用于指示所有目标STA或分别指示每个目标STA是否立即反馈信道状态信息的字段。
  48. 如权利要求38-45中任一项所述的方法，其特征在于，当向所述目标STA发送所述第一反馈指示消息和所述第一高效长训练序列之后再发送所述第一资源调度消息时，所述第一指示信息用于指示非立即反馈。
  49. 如权利要求38-45中任一项所述的方法，其特征在于，当所述第一通信资源中资源块的大小小于第一阈值或者所述第一通信资源中资源块所使用的空间流的数目小于第二阈值时，所述第一指示信息用于指示非立即反馈；
    当所述第一通信资源中资源块的大小大于或者等于所述第一阈值或者所述第一通信资源中资源块所使用的空间流的数目大于或者等于所述第二阈值时，所述第一指示信息用于指示立即反馈。
  50. 如权利要求41-43中任一项所述的方法，其特征在于，
    所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息处于不同的帧。
  51. 如权利要求40、43、45中任一项所述的方法，其特征在于，
    第一轮询调度消息和第二资源调度消息处于同一数据包；或者，
    第二轮询调度消息和第四资源调度消息处于同一数据包；或者，
    第三轮询调度消息和第五资源调度消息处于同一数据包。
  52. 一种传输信道状态信息的方法，其特征在于，包括：
    站点STA接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信 息的至少两个目标STA，所述高效长训练序列用于确定STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；
    当解析所述反馈指示消息并确定属于所述目标STA时，根据所述高效长训练序列进行信道估计，得到所述第一信道状态信息，并通过所述第一通信资源向所述AP发送所述第二信道状态信息；
    接收所述AP发送的第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于所述AP向所述STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述STA反馈所述第三信道状态信息时所使用的第二通信资源；
    通过所述第二通信资源向所述AP发送所述第三信道状态信息。
  53. 一种传输信道状态信息的方法，其特征在于，包括：
    发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定所述目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；
    接收所述目标STA通过所述第一通信资源发送的所述第二信道状态信息；
    发送第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述目标STA反馈所述第三信道状态信息时所使用的第二通信资源；
    接收所述目标STA通过所述第二通信资源发送的所述第三信道状态信息。
  54. 一种传输信道状态信息的站点，其特征在于，包括：
    第一接收单元，用于接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述高效长训练序列用于确定所述STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；
    第一发送单元，用于当解析所述接收单元接收的反馈指示消息并确定属于所述目标STA时，通过所述第一通信资源向所述AP发送确认消息，所述确认消息用于指示已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
  55. 如权利要求54所述的站点，其特征在于，所述发送单元具体用于当所述目标STA不支持立即反馈所述第一信道状态信息时，在接收所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息的X帧间距XIFS之后通过所述第一通信资源向所述AP发送所述确认消息。
  56. 如权利要求55所述的方法，其特征在于，所述站点还包括：
    第一确定单元，用于根据所述高效长训练序列确定所述第一信道状态信息。
  57. 如权利要求55或56所述的站点，其特征在于，所述站点还包括：
    第二接收单元，用于接收所述AP发送的第二资源调度消息，其中，所述第二资源调度消息用于指示所述STA反馈第二信道状态信息时所使用的第二通信资源；
    第二发送单元，用于通过所述第二通信资源向所述AP发送所述第二信道状态信息，所述第二信道状态信息为所述第一信道状态信息的部分或全部。
  58. 如权利要求57所述的站点，其特征在于，所述站点还包括：
    第三接收单元，用于接收所述AP发送的第一轮询调度消息和第三资源调度消息，其中，所述第一轮询调度消息用于所述AP向所述STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述STA反馈所述第三信道状态信息时所使用的第三通信资源；
    第三发送单元，用于通过所述第三通信资源向所述AP发送所述第三信道状态信息。
  59. 如权利要求58所述的站点，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包。
  60. 如权利要求59所述的站点，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的触发trigger帧；
    其中，所述trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段，所述trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种，所述第三资源调度消息位于所述第一资源分配信息字段，所述第一轮询调度消息位于所述第一反馈分片重传比特位图字段，所述第一资源分配重用指示字段用于指示所述第三资源调度消息与所述第二资源调度消息是否相同。
  61. 如权利要求60所述的站点，其特征在于，所述trigger帧还包括所述目标STA的标识字段。
  62. 如权利要求59所述的站点，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧，所述BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段，所述BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种，其中，所述第三资源调度消息位于所述第二资源分配信息字段，所述第一轮询调度消息位于所述第三反馈分片重传比特位图字段，所述第三资源调度消息的指示信息位于所述第二资源分配重用指示字段。
  63. 如权利要求62所述的站点，其特征在于，所述BF Report Poll帧还包括所述目标STA的标识字段。
  64. 如权利要求62或63所述的站点，其特征在于，用下列任一方式指示所述BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:所述接收地址字段、所述第二反馈分片重传比特位图字段、所述BF Report Poll帧的长度。
  65. 如权利要求55-64中任一项所述的站点，其特征在于，所述站点还包括：
    第二确定单元，用于根据下列条件中的至少一个确定所述STA不支持 立即反馈所述第一信道状态信息：所述STA的自身能力不足、所述STA缓存所述第一信道状态信息的优先级低于第一阈值和所述第一通信资源的资源块的大小小于门限值。
  66. 一种传输信道状态信息的接入点，其特征在于，包括：
    第一发送单元，用于向站点STA发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA针对所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息进行反馈时所使用的第一通信资源；
    第一接收单元，用于接收目标STA通过所述第一发送单元发送的所述第一资源调度消息所指示的所述第一通信资源发送的确认消息，所述确认消息用于指示所述目标STA已收到所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息。
  67. 如权利要求66所述的接入点，其特征在于，所述第一接收单元具体用于接收不支持立即反馈信道状态信息的目标STA在接收所述反馈指示消息、所述高效长训练序列和所述第一资源调度消息的X帧间距XIFS之后，通过所述第一通信资源发送的所述确认消息。
  68. 如权利要求67所述的接入点，其特征在于，所述接入点还包括：
    第二发送单元，用于向所述目标STA发送第二资源调度消息，其中，所述第二资源调度消息用于指示所述目标STA反馈第二信道状态信息时所使用的第二通信资源；
    第二接收单元，用于接收所述目标STA通过所述第二通信资源发送的所述第二信道状态信息，所述第二信道状态信息为所述第一信道状态信息的部分或全部。
  69. 如权利要求68所述的接入点，其特征在于，所述接入点还包括：
    第三发送单元，用于向所述目标STA发送第一轮询调度消息和第三资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息 用于指示所述目标STA反馈所述第三信道状态信息时所使用的第三通信资源；
    第三接收单元，用于接收所述目标STA通过所述第三通信资源发送的所述第三信道状态信息。
  70. 如权利要求69所述的接入点，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包。
  71. 如权利要求70所述的接入点，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的触发trigger帧；
    其中，所述trigger帧包括第一波束成形报告轮询类型指示字段和第一反馈分片重传比特位图字段，所述trigger帧还包括第一资源分配信息字段和第一资源分配重用指示字段中的至少一种，其中，所述第三资源调度消息位于所述第一资源分配信息字段，所述第一轮询调度消息位于所述第一反馈分片重传比特位图字段，所述第一资源分配重用指示字段用于指示所述第三资源调度消息与所述第二资源调度消息是否相同。
  72. 如权利要求71所述的接入点，其特征在于，所述trigger帧还包括所述目标STA的标识字段。
  73. 如权利要求72所述的接入点，其特征在于，所述第一轮询调度消息和所述第三资源调度消息承载于同一数据包的波束成形报告轮询BF Report Poll帧，所述BF Report Poll帧可以包括接收地址字段、第二反馈分片重传比特位图字段和第三反馈分片重传比特位图字段，所述BF Report Poll帧还可以包括第二资源分配信息字段和第二资源分配重用指示字段中的至少一种，其中，所述第三资源调度消息位于所述第二资源分配信息字段，所述第一轮询调度消息位于所述第三反馈分片重传比特位图字段，所述第三资源调度消息的指示信息位于所述第二资源分配重用指示字段。
  74. 如权利要求73所述的接入点，其特征在于，所述BF Report Poll帧还包括所述目标STA的标识字段。
  75. 如权利要求73或74所述的接入点，其特征在于，用下列任一方式指示所述BF Report Poll帧为用于触发多用户信道状态信息传输的轮询帧:所述接收地址字段、所述第二反馈分片重传比特位图字段、所述BF Report Poll帧的长度。
  76. 如权利要求66-75中任一项所述的接入点，其特征在于，所述不支 持立即反馈所述第一信道状态信息的目标STA包括下列条件中的至少一个：所述目标STA的自身能力不足、所述目标STA缓存所述第一信道状态信息的优先级低于第一阈值和所述第一通信资源的资源块的大小小于门限值。
  77. 一种传输信道状态信息的站点，其特征在于，包括：
    第一接收单元，用于接收接入点AP根据第一指示信息发送的第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信息，所述第一指示信息用于指示STA是否立即反馈信道状态信息，所述第一高效长训练序列用于确定所述STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；
    第一发送单元，用于当解析所述第一接收单元接收的所述反馈指示消息并确定属于所述STA时，根据所述第一接收单元接收的所述高效长训练序列进行信道估计，以确定所述第一信道状态信息，并通过所述第一接收单元接收的所述第一资源调度消息所指示的所述第一通信资源向所述AP发送所述第二信道状态信息或所述确认消息。
  78. 如权利要求77所述的站点，其特征在于，所述第一接收单元具体用于当所述第一指示信息指示所述STA不立即反馈信道状态信息时，在接收到所述AP发送的所述第一反馈指示消息和所述第一高效长训练序列的X帧间距XIFS之后接收到所述第一资源调度消息，其中，所述第一反馈指示消息包括所述第一指示信息；
    其中，所述第一发送单元具体用于在接收所述第一资源调度消息的X帧间距XIFS之后，根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源向所述AP发送所述第二信道状态信息。
  79. 如权利要求78所述的站点，其特征在于，所述站点还包括：
    第二接收单元，用于接收所述AP发送的第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述STA索取第三信道状 态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第二资源调度消息用于指示所述STA反馈所述第三信道状态信息时所使用的第二通信资源；
    第二发送单元，用于通过所述第二通信资源向所述AP发送所述第三信道状态信息。
  80. 如权利要求77所述的站点，其特征在于，所述第一发送单元具体用于当所述第一指示信息指示所述STA不立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后，通过所述第一通信资源向所述AP发送所述确认消息。
  81. 如权利要求80所述的站点，其特征在于，所述站点还包括：
    第三接收单元，用于接收所述AP发送的第三资源调度消息，其中，所述第三资源调度消息用于指示所述STA反馈第四信道状态信息时所使用的第三通信资源；
    第三发送单元，用于通过所述第三通信资源发送所述第四信道状态信息，所述第四信道状态信息为所述第一信道状态信息的部分或全部。
  82. 如权利要求81所述的站点，其特征在于，所述站点还包括：
    第四接收单元，用于接收所述AP发送的第二轮询调度消息和第四资源调度消息，其中，所述第二轮询调度消息用于向所述STA索取第五信道状态信息，所述第二轮询调度消息包括所述第五信道状态信息在所述第一信道状态信息中的片段信息，所述第五信道状态信息为所述第一信道状态信息除去所述第四信道状态信息之后的部分或全部，所述第四资源调度消息用于指示所述目标STA反馈所述第五信道状态信息时所使用的第四通信资源；
    第四发送单元，用于通过所述第四通信资源向所述AP发送所述第五信道状态信息。
  83. 如权利要求77所述的站点，其特征在于，所述第一发送单元具体用于当所述第一指示信息指示所述STA立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后，通过所述第一通信资源向所述AP发送所述第二信道状态信息。
  84. 如权利要求83所述的站点，其特征在于，所述站点还包括：
    第五接收单元，用于接收所述AP发送的第三轮询调度消息和第五资源 调度消息，其中，所述第三轮询调度消息用于向所述STA索取第六信道状态信息，所述第三轮询调度消息包括所述第六信道状态信息在所述第一信道状态信息中的片段信息，所述第六信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第五资源调度消息用于指示所述目标STA反馈所述第六信道状态信息时所使用的第五通信资源；
    第五发送单元，用于通过所述第五通信资源向所述AP发送所述第六信道状态信息。
  85. 如权利要求77-84中任一项所述站点，其特征在于，所述第一指示信息包括用于指示所述STA反馈信道状态信息的时间的字段。
  86. 如权利要求77-84中任一项所述的站点，其特征在于，所述第一指示信息包括用于指示所有STA或分别指示每个STA是否立即反馈所述信道状态信息的字段。
  87. 如权利要求77-84中任一项所述的站点，其特征在于，所述第一发送单元具体用于发送所述第一反馈指示消息和所述第一高效长训练序列之后再发送所述第一资源调度消息时，所述第一指示信息用于指示非立即反馈。
  88. 如权利要求77-84中任一项所述的站点，其特征在于，当所述第一通信资源中资源块的大小小于第一阈值或者所述第一通信资源中资源块所使用的空间流的数目小于第二阈值时，所述第一指示信息用于指示非立即反馈；
    当所述第一通信资源中资源块的大小大于或者等于所述第一阈值或者所述第一通信资源中资源块所使用的空间流的数目大于或者等于所述第二阈值时，所述第一指示信息用于指示立即反馈。
  89. 如权利要求80-82中任一项所述的站点，其特征在于，
    所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息处于不同的帧。
  90. 如权利要求79、82、84中任一项所述的站点，其特征在于，
    第一轮询调度消息和第二资源调度消息处于同一数据包；或者，
    第二轮询调度消息和第四资源调度消息处于同一数据包；或者，
    第三轮询调度消息和第五资源调度消息处于同一数据包。
  91. 一种传输信道状态信息的接入点，其特征在于，包括：
    确定单元，用于确定第一指示信息，所述第一指示信息用于指示需要向接入点AP反馈信道状态信息的至少两个目标站点STA是否立即反馈信道状态信息；
    第一发送单元，用于根据所述确定单元确定的所述第一指示信息向目标STA发送第一资源调度消息、第一反馈指示消息和第一高效长训练序列，其中，所述第一资源调度消息或所述第一反馈指示消息包括所述第一指示信息，所述第一反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标站点STA，所述第一高效长训练序列用于确定所述目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息或确认消息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的部分或全部，所述确认消息用于指示已收到所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息；
    第一接收单元，用于接收所述目标STA根据所述第一发送单元发送的所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息或所述确认消息。
  92. 如权利要求91所述的接入点，其特征在于，所述第一发送单元具体用于当所述第一指示信息指示所述目标STA不立即反馈信道状态信息时，在发送所述第一反馈指示消息和所述第一高效长训练序列的X帧间距XIFS之后再发送所述第一资源调度消息，其中，所述第一反馈指示消息包括所述第一指示信息；
    其中，所述第一接收单元具体用于在发送所述第一资源调度消息的X帧间距XIFS之后接收所述STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息。
  93. 如权利要求92所述的接入点，其特征在于，所述接入点还包括：
    第二发送单元，用于发送第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第二资源调度消息用于指示所述目标STA反馈所述第三信道状态信息时所使用的第二通信资源；
    第二接收单元，用于接收所述目标STA通过所述第二通信资源发送的所述第三信道状态信息。
  94. 如权利要求91所述的接入点，其特征在于，所述第一接收单元具体用于当所述第一指示信息指示所述目标STA不立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述确认消息。
  95. 如权利要求94所述的接入点，其特征在于，所述接入点还包括：
    第三发送单元，用于发送第三资源调度消息，其中，所述第三资源调度消息用于指示所述目标STA反馈第四信道状态信息时所使用的第三通信资源；
    第三接收单元，用于接收所述目标STA通过所述第三通信资源发送的所述第四信道状态信息，所述第四信道状态信息为所述第一信道状态信息的部分或全部。
  96. 如权利要求95所述的接入点，其特征在于，所述接入点还包括：
    第四发送单元，用于发送第二轮询调度消息和第四资源调度消息，其中，所述第二轮询调度消息用于向所述目标STA索取第五信道状态信息，所述第二轮询调度消息包括所述第五信道状态信息在所述第一信道状态信息中的片段信息，所述第五信道状态信息为所述第一信道状态信息除去所述第四信道状态信息之后的部分或全部，所述第四资源调度消息用于指示所述目标STA反馈所述第五信道状态信息时所使用的第四通信资源；
    第四接收单元，用于接收所述目标STA通过所述第四通信资源发送的所述第五信道状态信息。
  97. 如权利要求91所述的接入点，其特征在于，所述第一接收单元具体用于当所述第一指示信息指示所述目标STA立即反馈信道状态信息时，在发送所述第一资源调度消息的X帧间距XIFS之后接收所述目标STA根据所述第一资源调度消息、所述第一反馈指示消息和所述第一高效长训练序列通过所述第一通信资源发送的所述第二信道状态信息。
  98. 如权利要求97所述的接入点，其特征在于，所述接入点还包括：
    第五发送单元，用于发送第三轮询调度消息和第五资源调度消息，其中，所述第三轮询调度消息用于向所述目标STA索取第六信道状态信息，所述 第三轮询调度消息包括所述第六信道状态信息在所述第一信道状态信息中的片段信息，所述第六信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第五资源调度消息用于指示所述目标STA反馈所述第六信道状态信息时所使用的第五通信资源；
    第五接收单元，用于接收所述目标STA通过所述第五通信资源发送的所述第六信道状态信息。
  99. 如权利要求91-98中任一项所述的接入点，其特征在于，所述第一指示信息包括用于指示所述目标STA反馈信道状态信息的时间的字段。
  100. 如权利要求91-98中任一项所述的接入点，其特征在于，所述第一指示信息包括用于指示所有目标STA或分别指示每个目标STA是否立即反馈所述信道状态信息的字段。
  101. 如权利要求91-98中任一项所述的接入点，其特征在于，当发送所述第一反馈指示消息和所述第一高效长训练序列之后再发送所述第一资源调度消息时，所述第一指示信息用于指示非立即反馈。
  102. 如权利要求91-98中任一项所述的方法，其特征在于，当所述第一通信资源中资源块的大小小于第一阈值或者所述第一通信资源中资源块所使用的空间流的数目小于第二阈值时，所述第一指示信息用于指示非立即反馈；
    当所述第一通信资源中资源块的大小大于或者等于所述第一阈值或者所述第一通信资源中资源块所使用的空间流的数目大于或者等于所述第二阈值时，所述第一指示信息用于指示立即反馈。
  103. 如权利要求94-96中任一项所述的接入点，其特征在于，
    所述第一反馈指示消息、所述第一高效长训练序列和所述第一资源调度消息处于不同的帧。
  104. 如权利要求93、96、98中任一项所述的接入点，其特征在于，
    第一轮询调度消息和第二资源调度消息处于同一数据包；或者，
    第二轮询调度消息和第四资源调度消息处于同一数据包；或者，
    第三轮询调度消息和第五资源调度消息处于同一数据包。
  105. 一种传输信道状态信息的站点，其特征在于，包括：
    第一接收单元，用于接收接入点AP发送的反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈 信道状态信息的至少两个目标STA，所述高效长训练序列用于确定STA的第一信道状态信息，所述第一资源调度消息用于指示所述STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；
    第一发送单元，用于当解析所述第一接收单元接收的所述反馈指示消息并确定属于所述目标STA时，根据所述第一接收单元接收的所述高效长训练序列进行信道估计，得到所述第一信道状态信息，并通过所述第一接收单元接收的第一资源调度消息指示的所述第一通信资源向所述AP发送所述第二信道状态信息；
    第二接收单元，用于接收所述AP发送的第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于所述AP向所述STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述STA反馈所述第三信道状态信息时所使用的第二通信资源；
    第二发送单元，用于通过所述第二接收单元接收的所述第二资源调度消息指示的所述第二通信资源向所述AP发送所述第三信道状态信息。
  106. 一种传输信道状态信息的接入点，其特征在于，包括：
    第一发送单元，用于发送反馈指示消息、高效长训练序列和第一资源调度消息，所述反馈指示消息用于指示需要向所述AP反馈信道状态信息的至少两个目标STA，所述高效长训练序列用于确定目标STA的第一信道状态信息，所述第一资源调度消息用于指示所述目标STA反馈第二信道状态信息时所使用的第一通信资源，所述第二信道状态信息为所述第一信道状态信息的一部分；
    第一接收单元，用于接收所述目标STA通过所述第一发送单元发送的所述第一资源调度消息指示的所述第一通信资源发送的所述第二信道状态信息；
    第二发送单元，用于发送第一轮询调度消息和第二资源调度消息，其中，所述第一轮询调度消息用于向所述目标STA索取第三信道状态信息，所述第一轮询调度消息包括所述第三信道状态信息在所述第一信道状态信息中的片段信息，所述第三信道状态信息为所述第一信道状态信息除去所述第二 信道状态信息之后的部分或全部，所述第三资源调度消息用于指示所述目标STA反馈所述第三信道状态信息时所使用的第二通信资源；
    第二接收单元，用于接收所述目标STA通过所述第二发送单元发送的所述第二资源调度消息指示的所述第二通信资源发送的所述第三信道状态信息。
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