WO2018040806A1 - 传输业务数据的方法、接入点和站点 - Google Patents

传输业务数据的方法、接入点和站点 Download PDF

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Publication number
WO2018040806A1
WO2018040806A1 PCT/CN2017/094448 CN2017094448W WO2018040806A1 WO 2018040806 A1 WO2018040806 A1 WO 2018040806A1 CN 2017094448 W CN2017094448 W CN 2017094448W WO 2018040806 A1 WO2018040806 A1 WO 2018040806A1
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Prior art keywords
sta
type
service data
aid
frame
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PCT/CN2017/094448
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English (en)
French (fr)
Inventor
于健
禄彼得
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17845108.4A priority Critical patent/EP3500041B1/en
Publication of WO2018040806A1 publication Critical patent/WO2018040806A1/zh
Priority to US16/287,929 priority patent/US11770866B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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 application relates to the field of wireless communications and, more particularly, to methods, access points and sites for transmitting traffic data.
  • FIG. 1 is a schematic diagram of a scenario in which a communication system according to an embodiment of the present application is applicable.
  • FIG. 1 includes an access point (AP) and three stations (Station, STA) (eg, STA1, STA2, STA3).
  • AP access point
  • STA stations
  • the AP needs to send the emergency report to the STA as soon as possible to implement the downlink transmission of the emergency report.
  • emergency reporting is very sensitive to delays, so mechanisms need to be designed to ensure that emergency reports can be transmitted between STAs and APs as quickly as possible.
  • the STA when the STA has emergency service data to be transmitted, the STA sends a Request to Send (RTS) frame with an Emergency Information Element (IE), when the AP receives an emergency IE.
  • RTS Request to Send
  • IE Emergency Information Element
  • CTS Clear to Send
  • the priority transmission of emergency service data is ensured by using a shorter back-off window and a back-off value.
  • the process is based on the premise that the STA competes for the channel, and needs to bear some delay.
  • multiple STAs are required to re-competition, which increases the delay of the STA competing channel.
  • the embodiments of the present application provide a method, an access point, and a site for transmitting service data, which can improve the transmission efficiency of service data.
  • the first aspect provides a method for transmitting service data, including: a first station STA receives a control frame, the control frame includes control information, and the control information is used to indicate that the first STA competes for transmission. a resource of the type of service data; the first STA contends the resource according to the control information; the first STA sends the first type of service data corresponding to the first STA to the access point AP on the contending resource.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • the resource may be a channel, a resource unit, or the like, and may be a time dimension, a frequency domain dimension, a spatial dimension, or a combination thereof, and the contention resource may be a contention channel or the like.
  • the control information is a first association identifier (AID), where the receiving, by the first STA, a control frame includes: receiving, by the first STA Triggering a frame, the trigger frame carrying the first AID.
  • AID first association identifier
  • control frame may be a Trigger Frame (TF).
  • control frame may be a Trigger Frame For Random Access (TF-R), and the TF-R is used to trigger the STA to perform random contention.
  • the control information may be a non-zero AID carried by the trigger frame.
  • the first AID is used to indicate that the first STA is based on orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access)
  • the OFDMA is a random contention resource
  • the first STA competing for the resource according to the control information includes: the first STA is based on an OFDMA random contention resource.
  • the STA may use a carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) for random competition resources, or may receive a trigger frame.
  • CSMA/CA carrier Sense Multiple Access with Collision Avoidance
  • Adopt random competition based on OFDMA.
  • the OFDMA-based random contention can allow multiple STAs to simultaneously transmit data to the AP on different resource units, thus improving transmission efficiency.
  • the contention retract window of the first STA is smaller than a contention retract window of the second STA, and/or the first The backoff value of the STA is smaller than the backoff value of the second STA, where the second STA is not used to transmit the first type of service data.
  • the contention backoff window of the STA (such as the first STA) for transmitting the first type of service data is smaller than the contention back window of the STA (such as the second STA) that is not used to transmit the first type of service data, and/or
  • the fallback value of the STA (such as the first STA) that transmits the first type of service data is smaller than the backoff value of the STA (such as the second STA) that is not used to transmit the first type of service data, which helps the first STA to be faster. Competing for resources that transmit the first type of business data.
  • the first STA receives the control frame, where the first STA receives the access frame configured by the AP, where The access frame includes the second AID and/or a restricted access window (RAW) control field, where the second AID is used to indicate that the first STA competes for transmitting the first type of service data.
  • the RAW control field is used to indicate that the service data type of the access window is the first type of service data.
  • the access frame may be a frame with an emergency access window information element.
  • the method before the first STA receives the control frame, the method further includes: the first STA receiving the multi-user request to send multiple a user request to send (Multi-User Request to Send, MU-RTS) frame, where the MU-RTS frame carries a third AID, where the third AID is used to indicate that the AP will schedule the first STA to transmit the first class. Service data; the first STA sends an Allow CTS frame to be sent to the AP.
  • MU-RTS Multi-User Request to Send
  • the MU-RTS frame may be used by the AP to send a control frame to the STA to trigger the STA to initiate the process of transmitting the first type of service data, and may also cause other sites to no longer compete for resources and request the AP.
  • the station transmits the first type of service data to the Transmission Opportunity (TXOP) in advance, which can improve the transmission efficiency.
  • TXOP Transmission Opportunity
  • the first STA and other STAs that need to transmit the first type of service data may
  • the STA that receives the MU-RTS frame sent by the AP and is subjected to the MU-RTS frame and has the first type of service data to be transmitted may send a synchronous CTS frame to the AP, that is, multiple STAs simultaneously send a CTS frame to the AP, and each STA sends the CTS frame.
  • the physical layer structure of the CTS frame is the same.
  • the method before the first STA receives the control frame, the method further includes: the first STA receiving the service indication mapping TIM, The TIM is used to indicate that the AP triggers the first STA to transmit the first type of service data in a current beacon frame period.
  • the TIM may be used by the AP to notify the STA in advance to prepare to transmit the first type of service data. Specifically, the TIM may notify the STA that is ready to transmit the first type of service data to be no longer dormant or is in an awake state.
  • the method further includes: the first STA receiving the requirement information sent by the third STA, where the demand information includes the fourth AID
  • the fourth AID is used to indicate that the third STA needs to transmit the first type of service data or the data size of the first type of service corresponding to the third STA that the third STA needs to transmit;
  • the first STA sends, on the contending resources, the requirement that the third STA transmits the first type of service data or the data size of the first type of service corresponding to the third STA to the AP.
  • some STAs (such as the third STA) have the requirement of transmitting the first type of service data, but cannot transmit the corresponding first type of service data to the AP, due to channel state or distance limitation.
  • the fourth AID is carried in an efficient aggregation control field of the corresponding frame of the requirement information.
  • the receiving, by the first STA, the control frame includes: receiving, by the first STA, a control frame sent by the AP by using a relay;
  • the sending, by the first STA, the first type of service data corresponding to the first STA to the AP on the contending resource includes: sending, by the first STA, the AP to the AP by using the relay on the contending resource.
  • the relay may receive the control frame from the AP and send a control frame to the STA associated with the STA.
  • the STA that needs to transmit the first type of service data receives the control frame sent by the relay, and may perform channel competition according to the control frame, and competes in the competition.
  • the first type of service data (eg, an emergency report) is transmitted to the relay on the channel.
  • the relay After receiving the first type of service data sent by the STA, the relay can forward the first type of service data to the AP.
  • the control frame in the embodiment of the present application is used to indicate a resource that competes to transmit the first type of service data.
  • the AP may simultaneously transmit control frames to other STAs (eg, STA1) while transmitting control frames to the relay.
  • STA1 STA1
  • the AP sends a control frame to STA1 and the relay, it can allocate resources to the entire transmission bandwidth. For example, allocate some resources (for example, channel 1) to the relay to help STA2 forward data, and collect the first class associated with STA2.
  • the service data (for example, emergency report) allocates some resources (for example, channel 2) to STA1 for transmission of STA1's first type of service data (for example, emergency report), and stipulates the end time of parallel processing.
  • the relay can forward the collected emergency report of STA1 to the AP through channel 1, and forward the emergency report of STA1 to the AP through channel 2 through channel 2.
  • the relay and STA2 may be based on OFDMA while using channel 2 for emergency report transmission. In this way, the transmission efficiency of emergency reports can be improved.
  • the first type of service data is an emergency report.
  • the first type of service data in the embodiment of the present application may be one type or one type of service data, such as emergency report, voice service data, video service data, and the like.
  • a second aspect provides a method for transmitting service data, including: an access point AP sending a control frame to a first station STA, where the control frame includes control information, where the control information is used to indicate that the first STA competes a resource for transmitting the first type of service data; the AP receives the first type of service data corresponding to the first STA on the resource that the first STA contends.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • the control information is a first association identifier (AID)
  • the sending, by the AP, the control frame to the first STA includes: sending, by the AP, a trigger to the first STA a frame, the trigger frame carrying the first AID.
  • the contention retract window of the first STA is smaller than the contention retract window of the second STA, and/or the first The backoff value of the STA is smaller than the backoff value of the second STA, where the second STA is not used to transmit the first type of service data.
  • the sending, by the AP, the control frame to the first STA includes: sending, by the AP, the access frame configured by the AP to the first STA
  • the access frame includes the second AID and/or the restricted access window RAW control field, where the second AID is used to indicate that the first STA competes for resources for transmitting the first type of service data.
  • the RAW control field is used to indicate that the service data type of the access window is the first type of service data.
  • the method before the sending, by the AP, the control frame to the first STA, the method further includes: the AP to the first STA Sending a multi-user to allow to send a MU-RTS frame, where the MU-RTS frame carries a third AID, where the third AID is used to indicate that the AP subsequently schedules the first STA to transmit the first type of service data; Receiving an allowed transmission CTS frame sent by the first STA.
  • the method before the sending, by the AP, the control frame to the first STA, the method further includes: the AP to the first STA Transmitting a service indication mapping TIM, the TIM is used to indicate that the AP triggers the first STA to transmit the first type of service data in a current beacon frame period.
  • the first type of service data is an emergency service.
  • a third aspect provides a method for transmitting service data, including: an access point AP acquiring a data packet, where the data packet includes resource indication information and broadcast information, where the resource indication information includes a first AID, where the first The AID is used to indicate that the station STA participating in transmitting the first type of service data reads the broadcast information; the AP sends the data packet to the STA.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the method further includes: the AP sending a service indication mapping TIM to the STA, where the TIM is used to indicate a current beacon (Beacon) frame period
  • the AP caches multicast information of the first type of service data.
  • a fourth aspect provides a method for transmitting a service, including: a station STA receiving a data packet, where the data packet includes resource indication information and broadcast information, the resource indication information includes a first AID, and the first AID is used by Instructing the STA participating in transmitting the first type of service data to read the broadcast information; the STA reads the broadcast information according to the first AID.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the method further includes: the STA receiving a service indication mapping TIM, where the TIM is used to indicate the AP cache in a current beacon (Beacon) frame period There is multicast information for the first type of business data.
  • a service indication mapping TIM where the TIM is used to indicate the AP cache in a current beacon (Beacon) frame period
  • Beacon current beacon
  • the fifth aspect provides a method for transmitting service data, including: relaying a control frame, where the control frame includes control information, where the control information is used to indicate that the relay competes to transmit resources of the first type of service data.
  • the relay contends the resource according to the control frame, and sends the trigger frame to the first station STA associated with the relay; the relay receives the first STA sent according to the trigger frame And corresponding to the first type of service data of the first STA; the relay sends the first type of service data corresponding to the first STA to the access point AP on the contending resource.
  • the relay in the embodiment of the present application can help the STA associated with the UE to transmit the first type of service data between the STA and the AP, so that the transmission of the first type of service data over a long distance can be realized.
  • the relay may forward the control frame to the STA.
  • STA can be based on control frames
  • control information is a first association identifier AID
  • relay receiving control frame includes: the relay receiving trigger frame.
  • the first type of business data may be an emergency report.
  • the sixth aspect provides a method for transmitting service data, including: the access point AP sends a control frame to the relay, where the control frame includes control information, where the control information is used to indicate that the relay is competitively transmitted first. a resource of the type of service data; the AP receives the first type of service data corresponding to the first station STA sent by the relay.
  • the relay in the embodiment of the present application can help the STA associated with the UE to transmit the first type of service data between the STA and the AP, so that the transmission of the first type of service data over a long distance can be realized.
  • control information is a first association identifier AID
  • sending, by the access point AP, a control frame to the relay that: the AP sends the relay to the relay Trigger frame.
  • the method further includes: the AP sending resource allocation information to the relay and the second STA respectively;
  • the resource allocation information is used to indicate that the relay and the second STA respectively transmit the resource of the first type of service data to the AP, where the resource allocation information is further used to indicate that the relay and the second STA are simultaneously Transmitting corresponding first type of service data to the AP; or, the resource allocation information is used to indicate that the relay and the second STA use orthogonal frequency division multiple access (OFDMA) to compete for resources, and
  • OFDMA orthogonal frequency division multiple access
  • the first type of business data may be an emergency report.
  • the seventh aspect provides a station STA, including: a first receiving unit, configured to receive a control frame, where the control frame includes control information, where the control information is used to indicate that the STA competes for transmitting the first type of service. a resource; a contention unit, configured to compete for resources according to the control information received by the first receiving unit; and a first sending unit, configured to send, to the access point AP, a resource on the resource that the contention unit contends The corresponding first type of service data of the STA.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • control information is a first association identifier (AID), where the first receiving unit is specifically configured to receive a trigger frame, where the trigger frame carries the first An AID.
  • AID first association identifier
  • the first AID is used to indicate that the STA accesses an OFDMA random competition resource based on orthogonal frequency division multiple access, the competition The unit is specifically used for random competition resources based on OFDMA.
  • the contention retract window of the STA is smaller than a contention retract window of the second STA, and/or the STA is rolled back.
  • the value is smaller than the backoff value of the second STA, where the second STA is not used to transmit the first type of service data.
  • the first receiving unit is specifically configured to receive an access frame configured by the AP, where the access frame includes a second AID and/or a restricted access window RAW control field, the second AID being used to instruct the STA to contend for a resource for transmitting a first type of service data, where the RAW control field is used to indicate an access window
  • the business data type is the first type of business data.
  • the STA further includes: a second receiving unit, configured to receive a multi-user request to send a MU-RTS frame, the MU-RTS The frame carries a third AID, where the third AID is used to indicate that the AP will schedule the STA to transmit the first type of service data, and the second sending unit is configured to send the CTS frame to the AP.
  • the STA further includes: a third receiving unit, configured to receive a service indication map TIM, where the TIM is used to indicate a current beacon During the frame period of the Beacon, the AP triggers the first STA to transmit the first type of service data.
  • the STA further includes: a fourth receiving unit, configured to receive demand information sent by the third STA, where the demand information includes a fourth AID, the fourth AID is used to indicate a requirement of the third STA to transmit the first type of service data or a size of the first type of service data corresponding to the third STA that the third STA needs to transmit; And a third sending unit, configured to send, to the AP, the requirement that the third STA transmits the first type of service data or the data size of the first type of service corresponding to the third STA to the AP.
  • the fourth AID is carried in an efficient aggregation control field of the corresponding frame of the requirement information.
  • the first type of service data is an emergency report.
  • the station according to the seventh aspect of the embodiment of the present application may correspond to the method for transmitting service data of the first aspect of the method embodiment of the present application, and each unit/module in the station and the other operations and/or functions described above are respectively implemented.
  • the corresponding process of the first STA in the method shown in the first aspect is not described here for brevity.
  • an access point AP including: a first sending unit, configured to send a control frame to a first station STA, where the control frame includes control information, where the control information is used to indicate the first The STA contends for the resource for transmitting the first type of service data, and the first receiving unit is configured to receive the first type of service data corresponding to the first STA on the resource that the first STA contends.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • control information is a first association identifier (AID), where the first sending unit is specifically configured to send a trigger frame to the first STA, where the trigger frame is Carrying the first AID.
  • AID first association identifier
  • the contention retract window of the first STA is smaller than a contention retract window of the second STA, and/or the first The backoff value of the STA is smaller than the backoff value of the second STA, where the second STA is not used to transmit the first type of service data.
  • the first sending unit is specifically configured to send, by the first STA, an access frame configured by the AP, where the The inbound frame includes the second AID and/or the restricted access window RAW control field, where the second AID is used to indicate that the first STA competes for resources for transmitting the first type of service data, and the RAW control field is used by The service data type indicating the access window is the first type of service data.
  • the AP further includes: a second sending unit, configured to send, to the first STA, a multi-user to allow to send a MU-RTS frame.
  • the MU-RTS frame carries a third AID, where the third AID is used to indicate that the AP is scheduled to send the first STA to transmit the first type of service data, and the second receiving unit is configured to receive the first The STA sends a CTS frame that is allowed to be sent.
  • the AP further includes: a third sending unit, configured to send a service indication mapping TIM, the TIM, to the first STA
  • the AP is configured to trigger the first STA to transmit the first type of service data in a current Beacon frame period.
  • the first type of service data is an emergency service.
  • the access point according to the eighth aspect of the embodiments of the present application may correspond to the method for transmitting service data of the second aspect of the method embodiment of the present application, and each unit/module in the access point and the foregoing other operations and/or The functions are respectively implemented in order to implement the corresponding process of the access point AP in the method shown in the second aspect. For brevity, details are not described herein again.
  • the ninth aspect provides an access point AP, including: an acquiring unit, configured to acquire a data packet, where the data packet includes resource indication information and broadcast information, where the resource indication information includes a first AID, where the first The AID is used to indicate that the station STA participating in the transmission of the first type of service data reads the broadcast information, and the first sending unit is configured to send the data packet acquired by the acquiring unit to the STA.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the AP further includes: a second sending unit, configured to send a service indication mapping TIM to the STA, where the TIM is used to indicate a current beacon (Beacon)
  • the AP caches multicast information of the first type of service data during the frame period.
  • An access point according to the ninth aspect of the present application may correspond to the third aspect of the method embodiment of the present application.
  • a method of transmitting service data, and each unit/module in the access point and the other operations and/or functions described above are respectively implemented in order to implement the corresponding process of the access point in the method shown in the third aspect, for the sake of brevity, no longer Narration.
  • a station STA including: a first receiving unit, configured to receive a data packet, where the data packet includes resource indication information and broadcast information, where the resource indication information includes a first AID, The first AID is used to indicate that the STA participating in transmitting the first type of service data reads the broadcast information, and the read data unit is configured to use, according to the first AID in the data packet received by the first receiving unit. Reading the broadcast information.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the STA further includes: a second receiving unit, configured to receive a service indication mapping TIM, where the TIM is used to indicate a current beacon (Beacon) frame period
  • the AP caches multicast information of the first type of service data.
  • the site according to the tenth aspect of the embodiments of the present application may correspond to the method for transmitting service data of the first aspect of the method embodiment of the present application, and each unit/module in the site and the other operations and/or functions described above are respectively implemented.
  • the corresponding process of the STA in the method shown in the fourth aspect is not described here for brevity.
  • a relay including: a first receiving unit, configured to receive a control frame, where the control frame includes control information, where the control information is used to indicate that the relay competes to transmit the first type of service. a resource of the data, a first sending unit, configured to compete for resources according to the control frame, and send the trigger frame to a first station STA associated with the relay; and a second receiving unit, configured to receive the first The first type of service data corresponding to the first STA sent by the STA according to the triggering frame, and the second sending unit, configured to send, according to the contending resource, the first STA corresponding to the first STA The first type of business data.
  • the relay in the embodiment of the present application can help the STA associated with the UE to transmit the first type of service data between the STA and the AP, so that the transmission of the first type of service data over a long distance can be realized.
  • control information is a first association identifier AID
  • first receiving unit is specifically configured to receive a trigger frame.
  • the relay according to the eleventh embodiment of the present application may correspond to the method for transmitting service data of the fifth aspect of the method embodiment of the present application, and the respective units/modules of the relay and the other operations and/or functions described above are respectively.
  • the relay of the method shown in the fifth aspect for brevity, no further details are provided herein.
  • an access point including a first sending unit, configured to send a control frame to a relay, where the control frame includes control information, where the control information is used to indicate that the relay is competitively transmitted.
  • a first type of service data is used by the first receiving unit to receive the first type of service data corresponding to the first station STA sent by the relay.
  • the relay in the embodiment of the present application can help the STA associated with the UE to transmit the first type of service data between the STA and the AP, so that the transmission of the first type of service data over a long distance can be realized.
  • control information is a first association identifier AID
  • sending unit is specifically configured to send a trigger frame to the relay.
  • the second sending unit is configured to separately send resource allocation information to the relay and the second STA, where
  • the resource allocation information is used to indicate that the relay and the second STA respectively transmit the resource of the first type of service data to the AP, where the resource allocation information is further used to indicate that the relay and the second STA are simultaneously Transmitting corresponding first type of service data to the AP; or
  • the resource allocation information is used to indicate that the relay and the second STA use the orthogonal frequency division multiple access (OFDMA) mode to compete for resources, and transmit the corresponding first type of service data to the AP.
  • OFDMA orthogonal frequency division multiple access
  • An access point according to the twelfth aspect of the embodiments of the present application may correspond to the method for transmitting service data of the sixth aspect of the method embodiment of the present application, and each unit/module in the access point and the other operations and/or For the sake of brevity, the functions of the access point in the method shown in the sixth aspect are not described here.
  • FIG. 1 is a schematic diagram of a scenario of a communication system to which an embodiment of the present application is applicable.
  • FIG. 2 is a schematic flowchart of a method for transmitting service data according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of triggering an emergency report transmission by using an AID (such as a first AID) carried by a trigger frame TF-R in an embodiment of the present application.
  • an AID such as a first AID
  • FIG. 4 is a schematic diagram of a frame structure of a trigger frame including an AID (eg, a first AID) according to an embodiment of the present application.
  • an AID eg, a first AID
  • FIG. 5 is a transmission opportunity for establishing an emergency report by using an AID (such as a third AID) carried by a MU-RTS frame according to an embodiment of the present application.
  • an AID such as a third AID
  • FIG. 6 is a transmission opportunity for establishing an emergency report by using an AID (such as a third AID) carried by a MU-RTS frame according to another embodiment of the present application.
  • an AID such as a third AID
  • FIG. 7 is a schematic structural diagram of a frame with an emergency access window information element according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a triggering transmission emergency report by a TIM indication carried by a beacon frame according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of an emergency report transmitted by using a relay according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a frame of a cache information carrying an AID (eg, a fourth AID) by using an HE-A-Control according to an embodiment of the present application.
  • an AID eg, a fourth AID
  • FIG. 11 is a schematic flowchart of a method for transmitting service data according to another embodiment of the present application.
  • FIG. 12 is a schematic diagram of resource indication by using a first AID carried in a HE-SIG-B field according to an embodiment of the present application.
  • Figure 13 is a block diagram of a station of one embodiment of the present application.
  • FIG. 14 is a block diagram of an access point in accordance with an embodiment of the present application.
  • 15 is a block diagram of an access point in accordance with another embodiment of the present application.
  • 16 is a block diagram of a station of another embodiment of the present application.
  • 17 is a block diagram of a station of another embodiment of the present application.
  • FIG. 18 is a block diagram of an access point in accordance with another embodiment of the present application.
  • FIG. 19 is a block diagram of an access point in accordance with another embodiment of the present application.
  • 20 is a block diagram of a station of another embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX global interconnected microwave access
  • the station may be various stations (Stations, STAs), terminals (Terminals), mobile stations (Mobile stations, MSs), mobile terminals (Mobile terminals), etc. that support the WLAN communication protocol.
  • the station can communicate with one or more core networks via a Radio Access Network (RAN), for example, the station can be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., for example
  • RAN Radio Access Network
  • the station can be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc.
  • the site can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.
  • the AP may provide an access service for the station, and the AP may be an access point in the WLAN, or may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or may be A base station (NodeB) in WCDMA may also be an evolved Node B (eNB or "e-NodeB”) in LTE. This application does not limit this.
  • BTS Base Transceiver Station
  • NodeB evolved Node B
  • eNB evolved Node B
  • the wireless local area network (WLAN) system is taken as an example for description.
  • the present application is not limited thereto, and the method and apparatus according to the embodiments of the present application may also be applied to other communication systems.
  • the embodiment of the present application is only described by using an AP and a STA in the WLAN system as an example, but the application is not limited thereto, and the method and apparatus according to the embodiment of the present application can also be applied to a base station in other communication systems. And user equipment.
  • FIG. 2 is a schematic flowchart of a method for transmitting service data according to an embodiment of the present application.
  • the first type of service data transmitted is an emergency report as an example.
  • the AP sends a control frame to the first STA, where the first STA receives the control frame sent by the AP.
  • the AP sends a control frame to the first STA, where the control frame includes control information, and the control information may be used to indicate that the first STA competes for resources for transmitting the first type of service data.
  • the first type of service data herein may be emergency reports, video service data, audio service data, and the like.
  • control frame may be a trigger frame TF-R
  • control information is a first AID (such as 301 in FIG. 3)
  • control frame carries the first AID.
  • the frame structure of the trigger frame is shown in Figure 4.
  • the first AID, the second AID, the third AID, and the fourth AID in the embodiment of the present application may all be represented by AID X, where X is a number corresponding to each bit of the AID, the first AID, the second AID, and the Any two of the three AIDs and the fourth AID may take the same value or may take different values.
  • the comparison of the embodiments of the present application is not limited.
  • AID X is used to indicate a resource that contends to transmit the first type of service data, where X is the number of bits of the AID.
  • the AID X can also be used to indicate that the STA is randomly competing for resources based on OFDMA.
  • AID 1 to 2007 can be dominated, and AID 2008 to 2047 are reserved AIDs.
  • a reserved AID may be specified in the standard to indicate that the STA for transmitting the first type of service data performs OFDMA random contention.
  • the standard may select one AID in the AID 1 to 2007 for instructing the STA to transmit the first type of service data based on the OFDMA random contention.
  • AID 911 is used in the United States and AID 110 is used in China.
  • it may be specified that the AP does not allow the AID to be assigned to a particular STA.
  • the AP may select an AID in the AID 1 to 2007 to instruct the STA to transmit the first type of service data based on the OFDMA random competition, and use the information element in the Beacon frame. (Information Element, IE) broadcast.
  • Information Element, IE Information Element
  • the trigger frame may further include resource scheduling information of the STA, and the AP may perform resource scheduling by using the resource scheduling information.
  • control frame may be a frame with an Emergency Restricted Access Window (RAW) IE, as in step 603 of FIG.
  • RAW Emergency Restricted Access Window
  • a schematic diagram of a frame with an emergency RAW IE is shown in FIG. 7, and a frame with an emergency RAW IE may include at least one of a second AID and a RAW control field.
  • the second AID is used to indicate that the first STA contends for the resource for transmitting the first type of service data
  • the RAW control field is used to indicate that the service data type of the access window is the first type of service data.
  • the AP sends a control frame to the first STA, which may be sent in the form of broadcast or multicast, or may be sent in the form of unicast.
  • the first STA competes for resources according to the received control frame.
  • the first STA receives the control frame and can compete for resources according to the received control frame, as shown in 302 in FIG. Specifically, the STA may contend for a channel or the like for transmitting the first type of service data.
  • the AP and the STA can agree on the correspondence between the AID and the competition mode.
  • the appointment AID 811 is used to indicate that the STA having the first type of service data transmission needs to compete for resources and transmit the first type of service data in a random competition manner, and the STA receives the control frame.
  • the control frame carries the AID 811
  • the STA may Random competition is used to compete with other STAs that need to transmit the first type of service data.
  • the STA may be configured to indicate that the STA having the first type of service data transmission requirement and other STAs compete for resources based on the OFDMA competition, and transmit the first type of service data, and the STA receives the control frame and detects the control frame.
  • the transmission resources can be contending based on the random competition of OFDMA.
  • the contention backoff window of the first STA is smaller than the contention backoff window of the second STA, and/or the backoff value of the first STA is smaller than the backoff value of the second STA, where The second STA is not used to transmit the first type of service data, and the first STA is used to transmit the first type of service data.
  • the backoff value and the backoff window of the STA transmitting the first type of service data can be reduced, and the backoff value and the backoff window of the STA of the first type of service data can be kept unchanged, and the transmission is not increased.
  • the fallback value and fallback window of a normal STA of a type of service data can accelerate the competition of the first type of service data.
  • the STA In the random competition based on OFDMA, the STA first randomly selects a backoff value in the initial backoff window, and the STA reads the number of resource units indicated in the trigger frame for performing random competition, when the backoff value is greater than the resource. When the number of units is not transmitted, the transmission cannot be performed this time, and the backoff value is subtracted from the number of resource units as the backoff value of the next OFDMA competition; if the backoff value is smaller than the number of resource units, it is used for A resource unit is randomly selected from the randomly competing resource units for data communication. If the transmission opportunity is obtained, but the transmission fails, it is necessary to expand the competition back-off window, re-randomize a back-off value, and continue the competition.
  • the contention backoff window of the first STA is smaller than the contention backoff window of the second STA, and/or the backoff value of the first STA is smaller than the backoff value of the second STA, which may help the first STA to be faster. Competing for resources used to transmit the first type of business data.
  • the first STA sends the first type of service data corresponding to the first STA to the AP, and the AP receives the first type of service data that is sent by the first STA and is corresponding to the first STA.
  • the first STA may send the AP corresponding to the first STA through the contending resources.
  • the first type of business data As shown in Figure 4, the first type of service data is an emergency report.
  • the AP When the AP receives the emergency report sent by the STA, the AP may also send a Multiple User Block Acknowledgement (M-BA) frame to the STA.
  • M-BA Multiple User Block Acknowledgement
  • Other acknowledgment methods are used, such as sending an Acknowledge (ACK) frame, a Block Acknowledgement (BA) frame to each STA in sequence, or simultaneously transmitting ACK/BA frames to multiple STAs in an OFDMA manner.
  • relay data can be used for forwarding service data.
  • the foregoing step 101 may be that the AP sends a control frame to the first STA by using the control frame, where the first STA receives the control frame sent by the AP by using the control frame, and the step 103 may be that the first STA passes.
  • the AP sends the first type of service data corresponding to the first STA to the AP, and the AP receives the first type of service data corresponding to the first STA sent by the first STA by using the relay.
  • the AP may also send a control frame to other STAs (for example, STA1) while transmitting the control frame to the relay.
  • STA1 STA1
  • the resource allocation can be performed on the entire transmission bandwidth, and the end time of the parallel processing is agreed for the allocated different resources, so that the transmission efficiency of the emergency report can be improved, as shown in FIG.
  • the AP sends a MU-RTS frame to the first STA, where the first STA receives the MU-RTS frame sent by the AP.
  • all STAs may be configured as a Network Allocation Vector (NAV), and the NAV may also be a virtual carrier sense.
  • NAV Network Allocation Vector
  • CSMA/CA Carrier Sense Multiple Access with Collision Avoidance
  • DCF Distributed Coordination Function
  • the Distributed Coordination Function determines the media status through physical carrier sensing and virtual carrier sensing. Only when the physical carrier sensing and virtual carrier sensing mechanisms consider the channel to be idle, the channel is considered to be idle, otherwise the channel is considered busy. Virtual carrier sensing can declare exclusive access to the media. The result of virtual carrier sensing by the STAs that have been set up by the NAV is always busy. That is, the STAs that are set with the NAV will not actively contend for the channel.
  • the AP can set the NAV within a certain range, establish a transmission opportunity (TXOP), and the TXOP time limit.
  • TXOP transmission opportunity
  • some STAs can monopolize the media resources, and can send single or multiple data frames, management frames, and control frames, so that the AP and the STA that is being silenced cannot actively transmit data within the set duration, and the AP can be scheduled.
  • a STA performs uplink data transmission, and may also schedule multiple STAs to perform uplink multi-user data transmission.
  • the first STA may also receive the MU-RTS frame sent by the AP, as shown in FIG. 5 and FIG. 6, to schedule transmission of the uplink data.
  • the MU-RTS frame carries a third AID, where the third AID is used to indicate that the subsequent AP will schedule the first STA to transmit the first type of service data.
  • the STA knows that there is a first type of service data to be transmitted, which may trigger the STA to initiate the process of transmitting the first type of service data, and may also cause other sites to no longer compete for resources.
  • the requested station transmits the first type of service data to reserve transmission opportunities in advance, which can improve transmission efficiency.
  • the AP may notify the STA to enter the preparation for transmitting the first type of service data to schedule the transmission of the uplink data.
  • the first type of service data is an emergency report.
  • the MU-RTS frame carries the third AID.
  • the first case is that the AID carried in the MU-RTS frame only includes the third AID and does not include other AIDs. Only included in the MU-RTS frame The value formed by the bits is the AID that specifies a value.
  • the MU-RTS frame includes the third AID and other AIDs at the same time, where the values of the respective bits of the other AIDs are different from the values formed by the respective bits of the third AID.
  • APs and STAs that do not allow other Basic Service Sets can be defined for spatial multiplexing.
  • BSS Basic Service Sets
  • spatial multiplexing will increase the transmission efficiency of the entire system, it will also affect the transmission of emergency reports of the current basic service set.
  • the transmission of emergency reports of the current basic service set can be guaranteed.
  • the back-off window and the back-off value of the emergency reporting STA need to be transmitted are reduced, and the back-off window of the ordinary STA without the emergency report is increased, so that the transmission efficiency can be improved.
  • the first STA feeds back a CTS frame to the AP, and the AP receives the CTS frame fed back by the first STA.
  • the STA may feed back the CTS frame to the AP, as shown in FIG. 5 and FIG. 6.
  • the first STA such as STA1 in FIG. 5 and FIG. 6
  • other STAs that need to transmit the first type of service data such as STA2 and STA3 in FIG. 5 and FIG.
  • the STA that receives the MU-RTS frame and has the first type of service data to be transmitted may send the synchronous CTS frame to the AP, that is, multiple STAs simultaneously send the CTS frame to the AP, and the STAs send the The physical layer structure of the CTS frame is the same.
  • the AID carried by the MU-RTS frame includes only the third AID, and does not include other AIDs, that is, the MU-RTS frame includes only the AID of the value formed by the bit.
  • the AP sends the MU-RTS frame with the third AID, only the STA that needs urgent reporting will feed back the CTS frame to the AP.
  • the AP receives the CTS frame, it knows that the STA has the need to transmit an emergency report.
  • the MU-RTS frame includes the third AID and other AIDs at the same time, where the values of the respective bits of the other AIDs are different from the values formed by the respective bits of the third AID.
  • the first STA and other STAs that need to transmit the first type of service data can receive the MU-RTS frame sent by the AP, and receive the MU.
  • the RTS frame and the STAs that have the first type of service data to be transmitted may send the synchronous CTS frame to the AP, that is, the multiple STAs simultaneously send the CTS frame to the AP, and the physical layer structure of the CTS frame sent by each STA is the same.
  • the AP sends a TIM to the first STA, where the first STA receives the TIM sent by the AP.
  • the AP may also notify the STA to enter the preparation for transmitting the first type of service data in the following manner.
  • the AP may send a Beacon frame to the first STA, where the Beacon frame includes a TIM, and the TIM is used to indicate that the AP triggers the first STA to transmit the first type of service data in the current Beacon frame period.
  • the TIM can be used by the AP to notify the STA in advance to prepare to transmit the first type of service data.
  • the TIM may notify the STA that is ready to transmit the first type of service data to be no longer dormant or is in an awake state. This can reduce the transmission delay of transmitting the first type of service data, and can improve the transmission efficiency.
  • the first STA helps forward transmission requirements or cache information, such as the size of the cached data.
  • the third STA may send the requirement information to the first STA, where the first STA may receive the demand information sent by the third STA, where the demand information includes a fourth AID, and the fourth AID is used to indicate the third class of the third STA.
  • the transmission requirement of the service data, or the fourth AID is used to indicate the size of the first type of service data corresponding to the third STA that the third STA needs to transmit.
  • the first STA may also transmit, by using the contending resources, the transmission requirement of the third STA to transmit the first type of service data or The size of the first type of service data corresponding to the third STS is transmitted to the AP.
  • the first STA can help the STA (such as the third STA) that cannot transmit the corresponding first type of service data to send the demand information to the AP, so that the AP knows that the third STA has the requirement to transmit the first type of service data.
  • the sending of the triggering frame to the third STA may trigger the STA to report the transmission process of the first type of service data, and may also cause the third STA to report the first type of service data to the AP by using a relay or the like.
  • the request information sent by the third STA to the first STA may be sent in the form of a broadcast or a unicast, which is not limited in this embodiment of the present application.
  • High Efficient Aggregated Control in a High Throughput Control field of a frame header in a Media Access Control (MAC) frame may be utilized.
  • the A-Control field carries the fourth AID in the demand information, as shown in FIG.
  • the first STA in the embodiment of the present application may be any STA that has a first type of service data transmission requirement with the AP.
  • step 104 and step 105 can be performed prior to step 101, as shown in FIG.
  • step 106 can be performed prior to step 101, as shown in FIG.
  • steps 104, 105, 106 are optional steps. Moreover, steps 104, 105 and step 106 may both notify the STA in advance, so steps 104, 105 and steps may be side by side optional. In an embodiment of the present application, the STA may be notified in advance by using the steps 104 and 105, and the STA may be notified in advance by using 106, or may perform the steps 101 to 103 without notifying the STA in advance.
  • FIG. 3 is a schematic diagram of triggering an emergency report transmission by using an AID (such as a first AID) carried by a trigger frame TF-R in an embodiment of the present application.
  • FIG. 3 is exemplified by taking one AP and three STAs: STA1, STA2, and STA3 as an example.
  • the AP sends a TF-R frame to multiple STAs, where the TF-R frame includes a first AID field and a resource unit indication field.
  • the resource unit indication field is used to indicate the resource for transmitting the emergency report.
  • the first AID is used to indicate that the resource indicated by the corresponding resource unit indication field is a resource for multiple STAs based on OFDMA contention transmission emergency report.
  • the plurality of STAs compete for resources for transmitting emergency reports based on OFDMA.
  • the STA After receiving the TF-R frame, the STA can not transmit according to the number of resource units that can be used for random contention in the TF-R frame and its own backoff value. If the backoff value is greater than the number of resource units, the STA cannot transmit this time. Entering the contention channel backoff such as STA2, using the current backoff value minus the number of resource units as the backoff value of the next OFDMA competition; if the backoff value is less than or equal to the number of resource units, it can be used for random competition.
  • a resource unit is randomly selected from the resource unit for transmission of emergency reports, such as STA1.
  • the emergency report is transmitted to the AP through the contending resources.
  • the random backoff time and random backoff value of STAs with urgent report transmission requirements are smaller than the random backoff time and random backoff value of STAs without emergency reports (such as STA3).
  • STA1 and STA2 When STA1 and STA2 are all contending for the channel, STA1 and STA2 can simultaneously transmit their respective emergency reports to the AP by means of frequency division multiplexing.
  • STA3 When STA3 contends to the channel, the content of the competition can be used to transmit general data, such as Step 307 in Figure 3 is shown.
  • the AP When receiving the emergency report sent by STA1, the AP transmits an M-BA to STA1, indicating that the emergency report of STA1 has been received.
  • steps 305 to 308 and steps 301 to 304 are identical or similar one-to-one. To avoid repetition, details are not described herein again.
  • FIG. 4 is a schematic diagram of a frame structure of a trigger frame including an AID (eg, a first AID) according to an embodiment of the present application.
  • the trigger frame of Figure 4 includes a MAC frame header, a common area, and a site-by-site field.
  • the MAC frame header includes a frame control field
  • the common area includes a trigger frame type
  • the site-by-site area may include a site-by-site field 1, ..., a site-by-site field N...
  • the site-by-site field N (eg, site-by-site field 1) may include
  • the resource unit indication field is used to indicate the resource for transmitting the emergency report.
  • FIG. 5 is a transmission opportunity for establishing an emergency report by using an AID (such as a third AID) carried by a MU-RTS frame according to an embodiment of the present application.
  • FIG. 5 is exemplarily illustrated by taking one AP and three STAs: STA1, STA2, and STA3 as an example.
  • the AP sends a MU-RTS frame to multiple STAs, where the MU-RTS frame includes a third AID, and multiple STAs receive the MU-RTS frame.
  • Synchronous CTS means that multiple STAs that need to report CTS send CTS to the AP at the same time, and the physical layer structure of each CTS is the same.
  • the AP sends a TF-R frame to multiple STAs, and the TF-R frame includes a first AID, where the first AID is used to indicate that multiple STAs compete for resources for transmitting emergency reports based on OFDMA.
  • a plurality of STAs compete for resources for transmitting emergency reports based on OFDMA.
  • STA1, STA2, and STA3 all have emergency reports that need to be transmitted, and all of them compete for resources for transmitting emergency reports, STA1, STA2, and STA3 send respective corresponding emergency reports to the APs.
  • the AP feeds back the M-BA frame to the STA, indicating that the corresponding emergency report has been received.
  • FIG. 6 is a transmission opportunity for establishing an emergency report by using an AID (such as a third AID) carried by a MU-RTS frame according to another embodiment of the present application.
  • an AID such as a third AID
  • the AP sends a MU-RTS frame to multiple STAs, the STA receives the MU-RTS frame, and the MU-RTS frame includes a third AID.
  • the STA that receives the MU-RTS frame sends a CTS frame to the AP, and the AP receives the CTS frame fed back by the STA.
  • Synchronous CTS means that multiple STAs that need to report CTS send CTS to the AP at the same time, and the physical layer structure of each CTS is the same.
  • the AP sends an access frame to multiple STAs.
  • the access frame may be a frame with an emergency RAW IE.
  • a frame with an emergency RAW IE may include a second AID and/or RAW control field.
  • the second AID is used to indicate that the STA competes for the resource for transmitting the emergency report
  • the RAW control field is used to indicate that the service data type of the access window is an emergency report
  • the STA with the emergency report can adopt the RAW access.
  • STAs that receive frames with emergency RAW IEs can compete for resources, for example, in a CSMA/CA-based manner, which can use RAW to transmit emergency reports.
  • the STA1 that competes for the resource sends an emergency report to the AP on the corresponding resource, and the AP receives the emergency report sent by the STA1.
  • STA3 For STA3, it is assumed that STA3 does not have an urgent report for transmission. Since RAW is only used to transmit emergency reports, even if STA3 has general data to be transmitted, it cannot be transmitted through RAW. Therefore, STA3 does not transmit data in FIG.
  • the AP sends an acknowledgement frame to STA1.
  • the STA2 that competes for the resource sends an emergency report to the AP on the corresponding resource, and the AP receives the emergency report sent by the STA2.
  • the AP sends an acknowledgement frame to STA2.
  • FIG. 7 is a schematic structural diagram of a frame with an emergency access window information element according to an embodiment of the present application.
  • the frame with the emergency access window information element of FIG. 7 includes a RAW control field, a window duration field, a window start time field, a second AID, a channel indication field, and a periodic indication field, wherein the RAW control field and the second AID Just include at least one of them.
  • the RAW control field is used to indicate that the type of the access window is an emergency report, so that a different indication can be made for the types of access windows that may exist.
  • the duration of the window and the start time of the window indicate the interval that limits the contention window. Other methods, such as start time and end time, can be used to indicate, or the default duration or interval can be used.
  • the second AID is used to indicate that the STA that needs to transmit the emergency report performs the transmission of the emergency report. If the access window type of the emergency report is defined in the RAW control field, the second AID may be omitted. If the type of RAW is not separately defined for the emergency report window, the second AID may be used to further indicate that the STA that needs to transmit the emergency report transmits the emergency report.
  • the channel indication is used to indicate a channel that allows the STA to contend. Periodic indications are used to define whether or not to use a periodic contention window.
  • FIG. 8 is a schematic diagram of a triggering transmission emergency report by a TIM indication carried by a beacon frame according to an embodiment of the present application.
  • FIG. 8 is exemplarily illustrated by taking one AP and three STAs: STA1, STA2, and STA3 as an example.
  • the AP sends a beacon frame to multiple STAs, where the Beacon frame includes a TIM field.
  • Each bit of the TIM corresponds to an associated STA.
  • the bit of the TIM is set to 1, indicating that the downlink data of the corresponding STA is buffered at the AP. If set to 0, it indicates that the AP does not include downlink data of the corresponding STA.
  • Different bits in the TIM correspond to different STAs.
  • the TIM may also be multiplexed, and the TIM is used to indicate that the AP triggers the STA to transmit an emergency report during the current beacon frame period.
  • the TIM can be used by the AP to notify the STA in advance to prepare to transmit an emergency report, for example, to notify the STA that is ready to transmit the emergency report to no longer sleep, or to be in an awake state. This advance notice can be reduced Transfer time to improve transmission efficiency.
  • the AP sends a TF-R frame to multiple STAs, where the TF-R frame carries the first AID.
  • step 802 refers to step 301, and details are not described herein again.
  • step 802 refers to step 302, and details are not described herein again.
  • a plurality of STAs send emergency reports corresponding to each of the competing resources.
  • step 802 For the specific process of step 802, refer to step 303, and details are not described herein again.
  • the AP sends an M-BA frame to multiple STAs.
  • step 802 refers to step 304, and details are not described herein again.
  • FIG. 9 is a schematic diagram of an emergency report transmitted by using a relay according to an embodiment of the present application.
  • the relay may receive the control frame from the AP and send a control frame to the STA associated with the STA.
  • the STA that needs to transmit the first type of service data receives the control frame sent by the relay, and may perform channel competition according to the control frame, and competes in the competition.
  • An emergency report is transmitted to the relay on the channel.
  • the relay can forward trigger frames and emergency reports between the AP and the STA.
  • the above-mentioned way of using the relay operation may increase the delay.
  • the AP may transmit a control frame to the relay.
  • the AP may simultaneously transmit a TF-R frame to other STAs (eg, STA1), and the TF-R frame includes the AID X.
  • the TF-R frame may further include resource allocation information for the entire transmission bandwidth, resource allocation for the entire transmission bandwidth, and part of the resource allocation to the associated STAs that need to transmit emergency services for contention, such as channel 2 in the figure;
  • the resource as shown in channel 1, is assigned to the relay so that the relay forwards the trigger frame and the emergency report forwarding between the AP and the STA, and causes the relay to collect the emergency report of the STA associated with it, and agrees to parallel Processing end time.
  • STA1 receives the TF-R frame sent by the AP, performs an OFDMA competition for emergency reporting, transmits an emergency report to the AP on the contending channel, and feeds back an acknowledgment frame to the STA when the AP receives the emergency report.
  • step 903 on channel 1, the relay receives the TF-R frame and forwards it to the STA associated with it (for example, STA2), and STA2 receives the TF-R frame, performs the OFDMA competition for the emergency report, and competes in the competition.
  • An emergency report is transmitted on the resource.
  • the end time of step 902 and step 903 is the parallel processing end time agreed in the resource allocation information.
  • Step 904 After the parallel processing end time, the relay forwards the collected emergency report to the AP, or the relay uses the channel 2 to transmit the emergency report to the AP in advance by using the OFDMA competition.
  • Step 905 After receiving the relayed AP, the AP sends an acknowledgement frame to the relay, where the acknowledgement frame is used to indicate that the AP has received the emergency report sent by the relay. In this way, the use of relays can improve the transmission efficiency of emergency reports.
  • FIG. 10 is a schematic structural diagram of a frame of a cache information carrying an AID (eg, a fourth AID) by using an HE-A-Control according to an embodiment of the present application.
  • an AID eg, a fourth AID
  • the fourth AID in the embodiment of the present application is included in the requirement information, and the fourth AID is used to indicate that the third STA needs to transmit the first type of service data or the first class corresponding to the third STA that the third STA needs to transmit.
  • the third STA is an emergency reporting transmission demand, but due to channel conditions or distance restrictions, emergency reports cannot be transmitted to the AP's site in some cases.
  • the first STA is a site around the third STA, which can help the third STA complete the transmission of the emergency report requirement information, so that the transmission requirement of the third STA to transmit the emergency report can be improved.
  • VHT Very High Throughput
  • HE High Efficient
  • Aggregated Control occupies 30 bits.
  • the control field includes a control 1 (Control 1) field, a control N (Control N) field, and a padding field (Padding), and the control 1 field includes a Control ID field and a Control Info field, and control information.
  • the fields include cache information and number of requests.
  • the control ID field in the High Efficient Aggregated Control (HE-A-Control) field in the High Throughput Control field shown in FIG. 10 can be utilized.
  • the HE-A-Control field may carry 1 to N control signalings, wherein the control ID is used to indicate that the type of the control signaling is the cache information of the fourth AID.
  • a new type of control signaling type is cached information of the fourth AID, and the information that can be carried includes the size of the cache information of the fourth AID, and the number of times the cache request is collected.
  • a control signaling of the cache information may be first defined, and then the buffered information indicating whether the cached information is its own cached information or other STA's cached information.
  • the above uses the AID or RAW control field in the control frame to indicate that the STA having the first type of service data transmission requirement performs uplink data transmission in conjunction with FIG. 2 to FIG.
  • the AP downlink transmission of the first type of service data will be described below with reference to FIG. 11 and FIG.
  • FIG. 11 is a schematic flowchart of a method for transmitting service data according to another embodiment of the present application.
  • the AP acquires a data packet, where the data packet includes resource indication information and broadcast information, where the resource indication information includes a first AID.
  • the AP may downlink the service data in a multi-user format, and the resource indication information may be included in the high-efficiency signaling B of the data packet, that is, the HE-SIG-B field.
  • the first AID is used to indicate that the station STA participating in transmitting the first type of service data reads the broadcast information.
  • the AP sends a data packet to the STA, and the STA receives the data packet sent by the AP.
  • the STA reads the broadcast information according to the first AID in the data packet.
  • the data packet includes resource indication information and broadcast information, and the resource indication information includes a first AID.
  • the first AID is used to indicate that the station STA participating in transmitting the first type of service data reads the broadcast information, and does not participate in the emergency report of the first type of service data transmission, and does not need to read the broadcast information, in other words, participate in the first type of service data.
  • the STA can read the data in the packet, as shown in Figure 12 to read the emergency report.
  • the STA receives the data packet, and can instruct the STA to read the broadcast information according to the information carried in the data packet, so that the downlink service data can be transmitted and the transmission efficiency of the service data is improved.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • FIG. 12 is a schematic diagram of resource indication by using a first AID carried in a HE-SIG-B field according to an embodiment of the present application.
  • the frame structure of the data packet in FIG. 12 includes a Legacy Short Training Field (L-STF) field, a Legacy Long Training Field (L-LTF) field, and a legacy signaling field (Legacy Signal field, L).
  • L-STF Legacy Short Training Field
  • L-LTF Legacy Long Training Field
  • L-SIG Legacy Short Training Field
  • L-LTF Legacy Long Training Field
  • L-SIG High Efficiency Signal Field
  • HE-SIG High Efficiency Signal Field
  • HE-STF High Efficiency Short Training Field
  • HE-LTF High Efficiency Long Training field
  • Data field where the data field is exemplified by an emergency report.
  • FIG. 13 is a block diagram of a station of one embodiment of the present application.
  • the station 10 of FIG. 13 includes a first receiving unit 11, a competing unit 12, and a first transmitting unit 13.
  • the first receiving unit 11 is configured to receive a control frame, where the control frame includes control information, where the control information is used to indicate that the STA competes for resources for transmitting the first type of service data.
  • the competing unit 12 is configured to compete for resources according to control information received by the first receiving unit.
  • the first sending unit 13 is configured to send the first type of service data corresponding to the STA to the access point AP on the resource that the contention unit contends.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • the site according to the embodiment of the present application may correspond to the first site in FIG. 2 and the sites in FIG. 3, FIG. 5, FIG. 6, and FIG. 8 of the method embodiment of the present application, and each unit/module in the site and the other
  • the operations and/or functions are respectively implemented in order to implement the corresponding processes of the corresponding STAs in the foregoing method. For brevity, details are not described herein again.
  • the access point 20 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 control frame to the first station STA, where the control frame includes control information, where the control information is used to indicate that the first STA competes for resources for transmitting the first type of service data.
  • the first receiving unit 22 is configured to receive the first type of service data corresponding to the first STA on the resource that the first STA contends.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • the access point according to the embodiment of the present application may correspond to the AP in FIG. 2 and the APs in FIG. 3, FIG. 5, FIG. 6, and FIG. 8 of the method embodiment of the present application, and each unit/module in the AP and the other
  • the operations and/or functions are respectively implemented in order to implement the corresponding processes of the corresponding APs in the foregoing methods. For brevity, details are not described herein again.
  • the access point 30 of FIG. 15 is a block diagram of an access point in accordance with another embodiment of the present application.
  • the access point 30 of FIG. 15 includes an acquisition unit 31 and a first transmission unit 32.
  • the obtaining unit 31 is configured to acquire a data packet, where the data packet includes resource indication information and broadcast information, where the resource indication information includes a first AID, where the first AID is used to indicate that the station STA participating in transmitting the first type of service data reads the broadcast information.
  • the first sending unit 32 is configured to send, to the STA, a data packet acquired by the acquiring unit.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the access point according to the embodiment of the present application may correspond to the AP in FIG. 11 of the method embodiment of the present application, and each unit/module in the AP and the foregoing other operations and/or functions respectively implement corresponding to the corresponding AP in the foregoing method.
  • the process, for the sake of brevity, will not be described here.
  • the station 40 of FIG. 16 includes a first receiving unit 41 and a read data unit 42.
  • the first receiving unit 41 is configured to receive a data packet, where the data packet includes resource indication information and broadcast information, and the resource indication
  • the information includes a first AID, and the first AID is used to indicate that the STA participating in transmitting the first type of service data reads the broadcast information.
  • the read data unit 42 is configured to read the broadcast information according to the first AID in the data packet received by the first receiving unit.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the site according to the embodiment of the present application may correspond to the STA in FIG. 11 of the method embodiment of the present application, and the respective units/modules in the STA and the other operations and/or functions described above are respectively used to implement the corresponding processes of the corresponding STAs in the foregoing method. For the sake of brevity, it will not be repeated here.
  • FIG. 17 is a block diagram of a station of another embodiment of the present application.
  • the station 50 of Figure 17 includes a transmitter 51, a receiver 52, a processor 53, and a memory 54, and the various components can be coupled together by a bus system 55.
  • the receiver 52 is configured to receive a control frame, where the control frame includes control information, and the control information is used to indicate that the STA competes for resources for transmitting the first type of service data.
  • the processor 53 is configured to compete for resources according to the received control information.
  • the transmitter 51 is configured to send the first type of service data corresponding to the STA to the access point AP on the resource that the contention unit contends.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • the site according to the embodiment of the present application may correspond to the first site in FIG. 2 and the sites in FIG. 3, FIG. 5, FIG. 6, and FIG. 8 of the method embodiment of the present application, and each unit/module in the site and the other
  • the operations and/or functions are respectively implemented in order to implement the corresponding processes of the corresponding STAs in the foregoing method. For brevity, details are not described herein again.
  • the access point 60 of FIG. 18 includes a transmitter 61, a receiver 62, a processor 63, and a memory 64, and the various components can be coupled together by a bus system 65.
  • the transmitter 61 is configured to send a control frame to the first station STA, where the control frame includes control information, where the control information is used to indicate that the first STA competes for resources for transmitting the first type of service data.
  • the receiver 62 is configured to receive the first type of service data corresponding to the first STA on the resource that the first STA contends.
  • the AP triggers the STA to perform the transmission process of the first type of service data, and enables the STA to send the first type of service data to the AP on the contending resources, so that the contention delay can be reduced, and the transmission efficiency can be improved.
  • the access point according to the embodiment of the present application may correspond to the AP in FIG. 2 and the APs in FIG. 3, FIG. 5, FIG. 6, and FIG. 8 of the method embodiment of the present application, and each unit/module in the AP and the other
  • the operations and/or functions are respectively implemented in order to implement the corresponding processes of the corresponding APs in the foregoing methods. For brevity, details are not described herein again.
  • FIG. 19 is a block diagram of an access point in accordance with another embodiment of the present application.
  • the access point of FIG. 18 includes a transmitter 71, a processor 72, and a memory 73, and the various components can be coupled together by a bus system 74.
  • the processor 72 is configured to acquire a data packet, where the data packet includes resource indication information and broadcast information, where the resource indication information includes a first AID, where the first AID is used to indicate that the station STA participating in transmitting the first type of service data reads the broadcast information. .
  • the transmitter 71 is configured to send the acquired data packet to the STA.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the access point according to the embodiment of the present application may correspond to the AP in FIG. 11 of the method embodiment of the present application, and each unit/module in the AP and the foregoing other operations and/or functions respectively implement corresponding to the corresponding AP in the foregoing method.
  • the process, for the sake of brevity, will not be described here.
  • FIG. 20 is a block diagram of a station of another embodiment of the present application.
  • the station of FIG. 18 includes a receiver 81, a processor 82, and a memory 83, and the various components can be coupled together by a bus system 84.
  • the receiver 81 is configured to receive a data packet, where the data packet includes resource indication information and broadcast information, where the resource indication information includes a first AID, where the first AID is used to indicate that the STA participating in transmitting the first type of service data reads the broadcast. information.
  • the processor 82 is configured to read the broadcast information according to the first AID in the received data packet.
  • the embodiment of the present application sends a data packet including the resource indication information and the broadcast information to the STA by the AP, so that the STA receives the data packet, and can start the transmission process of the first type of service data according to the AID in the resource indication information, so that the transmission efficiency can be improved.
  • the site according to the embodiment of the present application may correspond to the STA in FIG. 11 of the method embodiment of the present application, and the respective units/modules in the STA and the other operations and/or functions described above are respectively used to implement the corresponding processes of the corresponding STAs in the foregoing method. For the sake of brevity, it will not be repeated here.
  • the processor of Figures 17-20 above controls the operation of the access point or site and can be used to process signals.
  • the memory can include read only memory and random access memory and provides instructions and data to the processor.
  • the transmitter and receiver can be coupled to an antenna.
  • the components of the access point or site are coupled together by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the various buses are labeled as bus systems in the figure.
  • the method disclosed in the above embodiments of the present application can be applied to a processor, a receiver, and a transmitter, or can be implemented by a processor, a receiver, and a transmitter.
  • each step of the above method may be completed by an integrated logic circuit of hardware in a processor, a receiver, and a transmitter, or an instruction in a form of software.
  • the processor may 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 may implement or perform the embodiments in the present application.
  • 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 application 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, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • RAM random access memory
  • ROM read-only memory
  • EPROM electrically programmable read-only memory
  • EEPROM electrically erasable Electrically Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory

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Abstract

本申请实施例提供了一种传输业务数据的方法、接入点和站点。该方法包括站点接收控制帧，控制帧包括控制信息，根据控制信息竞争资源，并在竞争到的资源上向接入点发送与站点相对应的第一类业务数据，控制信息用于指示站点竞争用于传输第一类业务数据的资源。本申请实施例通过接入点触发站点进行上行第一类业务数据的上报流程，能够提高业务数据的传输效率。

Description

传输业务数据的方法、接入点和站点
本申请要求于2016年8月29日提交中国专利局、申请号为201610751572.2、申请名称为“传输业务数据的方法、接入点和站点”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信领域，并且更具体地，涉及传输业务数据的方法、接入点和站点。
背景技术
随着物联网的飞速发展，智能家居和智慧城市的概念及其应用已经逐渐走入人们的生活中。在物联网的应用中，例如防盗监测、火灾、煤气等的安全监测、身体健康状况的监测等应用场景纷纷被人们提出。例如，图1为可应用本申请实施例的通信系统的场景的示意图，图1中包括接入点(Access Point,AP)和三个站点(Station,STA)(例如，STA1,STA2,STA3)。当出现紧急情况时，负责监测的STA需要尽快将紧急报告发送给AP，实现紧急报告的上行传输，或者，AP需要尽快将紧急报告发送给STA，实现紧急报告的下行传输。在无线局域网中(Wireless Local Area Network,WLAN)中，紧急报告对延迟非常敏感，因此需要设计相应的机制，保证紧急报告能够尽快地在STA和AP之间传输。
现有的设计方案，当STA有紧急业务数据需要传输时，STA发送带有紧急信息元素(Information Element，IE)的请求发送(Request to Send,RTS)帧，当AP收到带有紧急IE的RTS时，得知STA有紧急业务数据需要传输，并向AP回复允许发送(Clear to Send,CTS)帧。在完成RTS/CTS交互之后，所有需要参与紧急报告传输的STA利用较短的回退窗口和回退值进行信道竞争，而参与非紧急报告传输的STA利用较长的回退窗口和回退值进行信道竞争。这样，利用较短的回退窗口和回退值保证了紧急业务数据的优先传输。但是，该过程是建立在STA竞争到信道的前提上，需要承担一些延迟，此外，在已经竞争到信道的情况下，需要多个STA重新竞争，增大了STA竞争信道的延迟。
发明内容
本申请实施例提供一种传输业务数据的方法、接入点和站点，能够提高业务数据的传输效率。
第一方面，提供了一种传输业务数据的方法，包括：第一站点STA接收控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述第一STA竞争用于传输第一类业务数据的资源；所述第一STA根据所述控制信息竞争资源；所述第一STA在竞争到的资源上向接入点AP发送与所述第一STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
在本申请的一个实施例中，资源可以是信道、资源单元(Resource Unit)、等，可以是时间维度、频域维度、空间维度或其相结合的资源，竞争资源可以为竞争信道等。
结合第一方面，在第一方面的一种实现方式中，所述控制信息为第一关联标识(Association Identifier,AID)，其中，所述第一STA接收控制帧包括：所述第一STA接收触发帧，所述触发帧携带所述第一AID。
在本申请的一个实施例中，控制帧可以为触发帧(Trigger Frame，TF)。特别地，控制帧可以为随机竞争的触发帧又被叫做(Trigger Frame For Random Access，TF-R)，TF-R用于触发STA进行随机竞争。控制信息可以为触发帧携带的非零的AID。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，所述第一AID用于指示所述第一STA基于正交频分多址接入(Orthogonal Frequency Division Multiple Access，OFDMA)随机竞争资源，所述第一STA根据所述控制信息竞争资源包括：所述第一STA基于OFDMA随机竞争资源。
在本申请的一个实施例中，STA可以采用带有冲突避免的载波侦听多址接入(Carrier Sense Multiple Access with Collision Avoidance，CSMA/CA)进行随机竞争资源，也可以是通过接收触发帧，采用基于OFDMA的随机竞争。基于OFDMA的随机竞争可以允许多个STA在不同的资源单元上同时向AP发送数据，这样，可以提高传输效率。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，所述第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述第一STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
用于传输第一类业务数据的STA(如第一STA)的竞争回退窗口小于不用于传输第一类业务数据的STA(如第二STA)的竞争回退窗口，和/或，用于传输第一类业务数据的STA(如第一STA)的回退值小于不用于传输第一类业务数据的STA(如第二STA)的回退值，这样有助于第一STA更快的竞争到传输第一类业务数据的资源。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，所述第一STA接收控制帧，包括：所述第一STA接收所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口(Restricted access window，RAW)控制字段，所述第二AID用于指示所述第一STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
在本申请的一个实施例中，接入帧可以为带有紧急接入窗口信息元素的帧。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，在所述第一STA接收控制帧之前，所述方法还包括：所述第一STA接收多用户请求发送多用户请求发送(Multiple User Request to Send，MU-RTS)帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述第一STA传输第一类业务数据；所述第一STA向所述AP发送允许发送CTS帧。
在本申请的一个实施例中，MU-RTS帧可以用于AP请求向STA发送控制帧，以触发STA启动传输第一类业务数据的流程，还可以使得其它站点不再竞争资源，为AP请求的站点传输第一类业务数据提前预留传输机会(Transmission Opportunity，TXOP)，这样能够提高传输效率。
在本申请的一个实施例中，第一STA和其它需要传输第一类业务数据的STA都可以 接收AP发送的MU-RTS帧，且受到MU-RTS帧并且有第一类业务数据需要传输的STA可以向AP发送同步CTS帧，即多个STA同时向AP发送CTS帧，且各个STA发送的CTS帧的物理层结构相同。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，在所述第一STA接收控制帧之前，所述方法还包括：所述第一STA接收业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP会触发所述第一STA传输第一类业务数据。
在本申请的一个实施例中，TIM可以用于AP提前通知STA准备传输第一类业务数据。具体地，TIM可以提前通知准备传输第一类业务数据的STA不再休眠，或处于唤醒状态。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，所述方法还包括：所述第一STA接收第三STA发送的需求信息，所述需求信息包括第四AID，所述第四AID用于指示所述第三STA传输第一类业务数据的需求或者指示所述第三STA需要传输的与所述第三STA相应的第一类业务的数据大小；所述第一STA在竞争到的资源上向AP发送所述第三STA传输第一类业务数据的需求或发送与所述第三STA相应的第一类业务的数据大小。
在本申请的一个实施例中，由于信道状态或距离限制，有些STA(如第三STA)有传输第一类业务数据的需求，但却无法向AP传输相应的第一类业务数据时，可以通过周围的其它STA帮助转发传输需求或缓存信息，如缓存数据的大小等。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，所述第四AID承载在所述需求信息相应帧的高效聚合控制字段。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，所述第一STA接收控制帧包括：所述第一STA通过中继接收所述AP发送的控制帧；所述第一STA在竞争到的资源上向所述AP发送与所述第一STA相应的第一类业务数据包括：所述第一STA在竞争到的资源上通过中继向AP发送与所述第一STA相应的第一类业务数据。
在本申请的一个实施例中，对于部分STA和AP之间的长距离的传输需求，可能需要借助中继进行业务数据的转发。中继可以从AP接收控制帧并向与之关联的STA发送控制帧，需要传输第一类业务数据的STA收到中继发送的控制帧，可以根据控制帧进行信道竞争，并在竞争到的信道上向中继传输第一类业务数据(例如，紧急报告)。中继收到STA发送的第一类业务数据后，可以将第一类业务数据转发给AP。本申请实施例中的控制帧用于指示竞争传输第一类业务数据的资源。
但是，上述利用中继操作的方式可能会增加延迟。为了减小延迟，AP可以在向中继传输控制帧时，同时向其它STA(例如STA1)发送控制帧。AP向STA1和中继发送控制帧时，可以对整个传输带宽进行资源分配，例如，将部分资源(例如信道1)分配给中继帮助STA2进行数据转发，并收集与STA2相关联的第一类业务数据(例如紧急报告)，将部分资源(例如信道2)分配给STA1进行STA1的第一类业务数据(例如紧急报告)的传输，并约定并行处理的结束时间。这样，在并行处理的结束时间之后，中继可以将收集到的STA1的紧急报告通过信道1转发给AP，通过信道2将STA1的紧急报告通过信道2转发给AP。或者，中继和STA2可以基于OFDMA，同时利用信道2进行紧急报告的传输。这样，可以提高紧急报告的传输效率。
结合第一方面及其上述实现方式，在第一方面的另一种实现方式中，所述第一类业务数据为紧急报告。
本申请实施例中的第一类业务数据可以为一种或一类业务数据，例如紧急报告、语音业务数据、视频业务数据等。
第二方面，提供了一种传输业务数据的方法，包括：接入点AP向第一站点STA发送控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述第一STA竞争用于传输第一类业务数据的资源；所述AP在所述第一STA竞争到的资源上，接收与所述第一STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
结合第二方面，在第二方面的一种实现方式中，所述控制信息为第一关联标识AID，其中，所述AP向第一STA发送控制帧包括：所述AP向第一STA发送触发帧，所述触发帧携带所述第一AID。
结合第二方面及其上述实现方式，在第二方面的另一种实现方式中，所述第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述第一STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
结合第二方面及其上述实现方式，在第二方面的另一种实现方式中，所述AP向第一STA发送控制帧包括：所述AP向第一STA发送所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口RAW控制字段，所述第二AID用于指示所述第一STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
结合第二方面及其上述实现方式，在第二方面的另一种实现方式中，在所述AP向第一STA发送控制帧之前，所述方法还包括：所述AP向所述第一STA发送多用户允许发送MU-RTS帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述第一STA传输第一类业务数据；所述AP接收所述第一STA发送的允许发送CTS帧。
结合第二方面及其上述实现方式，在第二方面的另一种实现方式中，在所述AP向第一STA发送控制帧之前，所述方法还包括：所述AP向所述第一STA发送业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP会触发所述第一STA传输第一类业务数据。
结合第二方面及其上述实现方式，在第二方面的另一种实现方式中，所述第一类业务数据为紧急业务。
第三方面，提供了一种传输业务数据的方法，包括：接入点AP获取数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的站点STA读取所述广播信息；所述AP向所述STA发送所述数据包。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
结合第三方面，在第三方面的一种实现方式中，所述方法还包括：所述AP向所述STA发送业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP缓存有第一类业务数据的多播信息。
第四方面，提供了一种传输业务的方法，包括：站点STA接收数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的所述STA读取所述广播信息；所述STA根据所述第一AID读取所述广播信息。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
结合第四方面，在第四方面的一种实现方式中，所述方法还包括：所述STA接收业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP缓存有第一类业务数据的多播信息。
第五方面，提供了一种传输业务数据的方法，包括：中继接收控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述中继竞争传输第一类业务数据的资源；所述中继根据所述控制帧竞争资源，并向与所述中继关联的第一站点STA发送所述触发帧；所述中继接收所述第一STA根据所述触发帧发送的与所述第一STA相应的第一类业务数据；所述中继在竞争到的资源上向接入点AP发送所述与所述第一STA相应的第一类业务数据。
本申请实施例中的中继可以帮助与之关联的STA在STA和AP之间传输第一类业务数据，这样能够实现远距离的第一类业务数据的传输。
在本申请的一个实施例中，中继在接收到AP发送的控制帧后，可以向STA转发该控制帧。STA可以根据控制帧进行
结合第五方面，在第五方面的一种实现方式中，所述控制信息为第一关联标识AID，所述中继接收控制帧包括：所述中继接收触发帧。
在本申请的一个实施例中，第一类业务数据可以是紧急报告。
第六方面，提供了一种传输业务数据的方法，包括：接入点AP向中继发送控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述中继竞争传输第一类业务数据的资源；所述AP接收所述中继发送的与第一站点STA相应的第一类业务数据。
本申请实施例中的中继可以帮助与之关联的STA在STA和AP之间传输第一类业务数据，这样能够实现远距离的第一类业务数据的传输。
结合第六方面，在第六方面的一种实现方式中，所述控制信息为第一关联标识AID，所述接入点AP向中继发送控制帧包括：所述AP向所述中继发送触发帧。
结合第六方面及其上述实现方式，在第六方面的另一种实现方式中，所述方法还包括：所述AP向所述中继和第二STA分别发送资源分配信息；其中，所述资源分配信息用于指示所述中继和所述第二STA分别向所述AP传输第一类业务数据的资源，所述资源分配信息还用于指示所述中继和所述第二STA同时向所述AP传输相应的第一类业务数据；或者，所述资源分配信息用于指示所述中继和所述第二STA采用正交频分多址接入OFDMA方式竞争资源，并向所述AP传输相应的第一类业务数据。
在本申请的一个实施例中，第一类业务数据可以是紧急报告。
第七方面，提供了一种站点STA，包括：第一接收单元，用于接收控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述STA竞争用于传输第一类业务数据的资源；竞争单元，用于根据所述第一接收单元接收的所述控制信息竞争资源；第一发送单元，用于在所述竞争单元竞争到的资源上向接入点AP发送与所述STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
结合第七方面，在第七方面的一种实现方式中，所述控制信息为第一关联标识AID，其中，所述第一接收单元具体用于接收触发帧，所述触发帧携带所述第一AID。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述第一AID用于指示所述STA基于正交频分多址接入OFDMA随机竞争资源，所述竞争单元具体用于基于OFDMA随机竞争资源。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述第一接收单元具体用于接收所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口RAW控制字段，所述第二AID用于指示所述STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述STA还包括：第二接收单元，用于接收多用户请求发送MU-RTS帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述STA传输第一类业务数据；第二发送单元，用于向所述AP发送允许发送CTS帧。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述STA还包括：第三接收单元，用于接收业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP会触发所述第一STA传输第一类业务数据。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述STA还包括：第四接收单元，用于接收第三STA发送的需求信息，所述需求信息包括第四AID，所述第四AID用于指示所述第三STA传输第一类业务数据的需求或者指示所述第三STA需要传输的与所述第三STA相应的第一类业务数据的大小；第三发送单元，用于在竞争到的资源上向AP发送所述第三STA传输第一类业务数据的需求或发送与所述第三STA相应的第一类业务的数据大小。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述第四AID承载在所述需求信息相应帧的高效聚合控制字段。
结合第七方面及其上述实现方式，在第七方面的另一种实现方式中，所述第一类业务数据为紧急报告。
根据本申请实施例第七方面的站点可以对应于本申请方法实施例的第一方面的传输业务数据的方法，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第一方面所示方法中第一STA的相应流程，为了简洁，在此不再赘述。
第八方面，提供了一种接入点AP，包括：第一发送单元，用于向第一站点STA发送控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述第一STA竞争用于传输第一类业务数据的资源；第一接收单元，用于在所述第一STA竞争到的资源上，接收与所述第一STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
结合第八方面，在第七方面的一种实现方式中，所述控制信息为第一关联标识AID，其中，所述第一发送单元具体用于向第一STA发送触发帧，所述触发帧携带所述第一AID。
结合第八方面及其上述实现方式，在第七方面的另一种实现方式中，所述第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述第一STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
结合第八方面及其上述实现方式，在第七方面的另一种实现方式中，所述第一发送单元具体用于向第一STA发送所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口RAW控制字段，所述第二AID用于指示所述第一STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
结合第八方面及其上述实现方式，在第七方面的另一种实现方式中，所述AP还包括：第二发送单元，用于向所述第一STA发送多用户允许发送MU-RTS帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述第一STA传输第一类业务数据；第二接收单元，用于接收所述第一STA发送的允许发送CTS帧。
结合第八方面及其上述实现方式，在第七方面的另一种实现方式中，所述AP还包括：第三发送单元，用于向所述第一STA发送业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP会触发所述第一STA传输第一类业务数据。
结合第八方面及其上述实现方式，在第七方面的另一种实现方式中，所述第一类业务数据为紧急业务。
根据本申请实施例第八方面的接入点可以对应于本申请方法实施例的第二方面的传输业务数据的方法，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第二方面所示方法中接入点AP的相应流程，为了简洁，在此不再赘述。
第九方面，提供了一种接入点AP，包括：获取单元，用于获取数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的站点STA读取所述广播信息；第一发送单元，用于向所述STA发送所述获取单元获取的所述数据包。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
结合第九方面，在第九方面的一种实现方式中，所述AP还包括：第二发送单元，用于向所述STA发送业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP缓存有第一类业务数据的多播信息。
根据本申请实施例第九方面的接入点可以对应于本申请方法实施例的第三方面的传 输业务数据的方法，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第三方面所示方法中接入点的相应流程，为了简洁，在此不再赘述。
第十方面，提供了一种站点STA，其特征在于，包括：第一接收单元，用于接收数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的所述STA读取所述广播信息；读数据单元，用于根据所述第一接收单元接收的数据包中的所述第一AID读取所述广播信息。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
结合第十方面，在第十方面的一种实现方式中，所述STA还包括：第二接收单元，用于接收业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP缓存有第一类业务数据的多播信息。
根据本申请实施例第十方面的站点可以对应于本申请方法实施例的第一方面的传输业务数据的方法，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第四方面所示方法中站点STA的相应流程，为了简洁，在此不再赘述。
第十一方面，提供了一种中继，包括：第一接收单元，用于接收控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述中继竞争传输第一类业务数据的资源；第一发送单元，用于根据所述控制帧竞争资源，并向与所述中继关联的第一站点STA发送所述触发帧；第二接收单元，用于接收所述第一STA根据所述触发帧发送的与所述第一STA相应的第一类业务数据；第二发送单元，用于在竞争到的资源上向接入点AP发送所述与所述第一STA相应的第一类业务数据。
本申请实施例中的中继可以帮助与之关联的STA在STA和AP之间传输第一类业务数据，这样能够实现远距离的第一类业务数据的传输。
结合第十一方面，在第十一方面的一种实现方式中，所述控制信息为第一关联标识AID，所述第一接收单元具体用于接收触发帧。
根据本申请实施例第十一方面的中继可以对应于本申请方法实施例的第五方面的传输业务数据的方法，并且，该中继的各个单元/模块和上述其他操作和/或功能分别为了实现第五方面所示方法的中继所执行的相应流程，为了简洁，在此不再赘述。
第十二方面，提供了一种接入点，包括第一发送单元，用于向中继发送控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述中继竞争传输第一类业务数据的资源；第一接收单元，用于接收所述中继发送的与第一站点STA相应的第一类业务数据。
本申请实施例中的中继可以帮助与之关联的STA在STA和AP之间传输第一类业务数据，这样能够实现远距离的第一类业务数据的传输。
结合第十二方面，在第十二方面的一种实现方式中，所述控制信息为第一关联标识AID，所述发送单元具体用于向所述中继发送触发帧。
结合第十二方面及其上述实现方式，在第十二方面的另一种实现方式中，第二发送单元，用于向所述中继和第二STA分别发送资源分配信息；其中，所述资源分配信息用于指示所述中继和所述第二STA分别向所述AP传输第一类业务数据的资源，所述资源分配信息还用于指示所述中继和所述第二STA同时向所述AP传输相应的第一类业务数据；或 者，所述资源分配信息用于指示所述中继和所述第二STA采用正交频分多址接入OFDMA方式竞争资源，并向所述AP传输相应的第一类业务数据。
根据本申请实施例第十二方面的接入点可以对应于本申请方法实施例的第六方面的传输业务数据的方法，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第六方面所示方法中接入点的相应流程，为了简洁，在此不再赘述。
附图说明
图1是可应用本申请实施例的通信系统的场景的示意图。
图2是本申请一个实施例的传输业务数据的方法的示意性流程图。
图3是本申请一个实施例中利用触发帧TF-R携带的AID(如第一AID)触发紧急报告传输的示意图。
图4是本申请一个实施例的包括AID(如第一AID)的触发帧的帧结构示意图。
图5是本申请一个实施例的利用MU-RTS帧携带的AID(如第三AID)建立紧急报告的传输机会。
图6是本申请另一实施例的利用MU-RTS帧携带的AID(如第三AID)建立紧急报告的传输机会。
图7是本申请一个实施例的带有紧急接入窗口信息元素的帧的结构示意图。
图8是本申请一个实施例的通过信标帧携带的TIM指示触发传输紧急报告的示意图。
图9是本申请一个实施例的利用中继传输紧急报告的示意图。
图10是本申请一个实施例的利用HE-A-Control承载AID(如第四AID)的缓存信息的帧的结构示意图。
图11是本申请另一实施例的传输业务数据的方法的示意性流程图。
图12是本申请一个实施例的利用HE-SIG-B字段携带的第一AID进行资源指示的示意图。
图13是本申请一个实施例的站点的框图。
图14是本申请一个实施例的接入点的框图。
图15是本申请另一实施例的接入点的框图。
图16是本申请另一实施例的站点的框图。
图17是本申请另一实施例的站点的框图。
图18是本申请另一实施例的接入点的框图。
图19是本申请另一实施例的接入点的框图。
图20是本申请另一实施例的站点的框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
应理解，本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term  Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)或全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统等。
还应理解，在本申请实施例中，站点可以是支持WLAN通信协议的各种站点(Station，STA)、终端(Terminal)、移动台(Mobile Station，MS)、移动终端(Mobile Terminal)等，该站点可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，例如，站点可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等，例如，站点还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语音和/或数据。
还应理解，在本申请实施例中，AP可以为站点提供接入服务，AP可以是WLAN中的接入点，也可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，还可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(evolved Node B，eNB或“e-NodeB”)。本申请对此并不作限定。
在本申请的实施例中，仅以无线局域网(Wireless Local Area Networks，WLAN)系统为例进行说明，但本申请并不限于此，根据本申请实施例的方法和装置还可以应用于其它通信系统；类似地，本申请实施例也仅以WLAN系统中的AP和STA为例进行说明，但本申请并不限于此，根据本申请实施例的方法和装置还可以应用于其它通信系统中的基站和用户设备。
图2是本申请一个实施例的传输业务数据的方法的示意性流程图。本申请实施例中以传输的第一类业务数据是紧急报告为例进行说明。
101，AP向第一STA发送控制帧，第一STA接收AP发送的控制帧。
AP向第一STA发送控制帧，控制帧包括控制信息，控制信息可以用于指示第一STA竞争用于传输第一类业务数据的资源。这里的第一类业务数据可以是紧急报告、视频业务数据、音频业务数据等。
在本申请的一个实施例中，控制帧可以为触发帧TF-R，控制信息为第一AID(如图3中的301)，控制帧携带第一AID。触发帧的帧结构示意图如图4所示。
本申请实施例中的第一AID，第二AID，第三AID和第四AID都可以用AID X来表示，X为对应AID的各个比特位构成的数，第一AID，第二AID，第三AID和第四AID中的任意两个X可以取相同的值，也可以取不同的值，本申请实施例对比不做限制。
在本申请的一个实施例中，AID X用于指示竞争传输第一类业务数据的资源，其中X为AID的各个比特位构成的数。特别地，还可以用AID X指示STA基于OFDMA随机竞争资源。
目前802.11标准中，AID 1～2007可以被支配，AID 2008～2047为预留AID。在本申请的一个实施例中，可以在标准中规定一个预留AID指示用于传输第一类业务数据的STA进行OFDMA随机竞争。
在本申请的一个实施例中，标准可以在AID 1～2007中选定一个AID用于指示STA基于OFDMA随机竞争的方式传输第一类业务数据。比如在美国采用AID 911，在中国采用AID 110等。在此种情况下，可以规定AP不允许将该AID分配给某一个特定的STA。
在本申请的一个实施例中，AP可以在AID 1～2007中选定一个AID用于指示STA基于OFDMA随机竞争的方式传输第一类业务数据，并在信标(Beacon)帧中利用信息元素(Information Element，IE)进行广播。在此种情况下，可以规定AP不允许将其广播的AID X分配给某一个特定的STA。
在本申请的一个实施例中，触发帧还可以包括STA的资源调度信息，AP可以通过资源调度信息进行资源调度。
在本申请的另一个实施例中，控制帧可以为带有紧急限制接入窗口(Restricted access window，RAW)IE的帧，如图6中的步骤603。带有紧急RAW IE的帧的结构示意图如图7所示，带有紧急RAW IE的帧可以包括第二AID和RAW控制字段中的至少一个。第二AID用于指示第一STA竞争用于传输第一类业务数据的资源，RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
AP向第一STA发送控制帧可以广播、多播的形式发送，也可以是以单播的形式发送。
102，第一STA根据接收的控制帧竞争资源。
第一STA接收控制帧，可以根据接收的控制帧竞争资源，如图3中的302。具体地，STA可以竞争用于传输第一类业务数据的信道等。
AP和STA可以约定AID与竞争方式的对应关系。例如，约定AID 811用于指示有第一类业务数据传输需求的STA通过随机竞争的方式竞争资源并传输第一类业务数据，STA收到控制帧，当控制帧中携带AID 811时，STA可以采取随机竞争的方式与其它需要传输第一类业务数据的STA竞争资源。
再如，可以约定AID 711用于指示有第一类业务数据传输需求的STA和其它STA基于OFDMA竞争的方式竞争资源，并传输第一类业务数据，STA收到控制帧，检测到控制帧中携带AID 711时，可以采用基于OFDMA随机竞争的方式竞争传输资源。
在本申请的一个实施例中，第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，第一STA的回退值小于第二STA的回退值，其中，第二STA不用于传输第一类业务数据，第一STA用于传输第一类业务数据。换句话说，可以减小传输第一类业务数据的STA的回退值和回退窗口，也可以保持第一类业务数据的STA的回退值和回退窗口不变，而增加传输非第一类业务数据的普通STA的回退值和回退窗口，这样可以加速第一类业务数据的竞争。
在基于OFDMA的随机竞争中，STA首先在初始的回退窗口中随机选择一个回退值，同时STA读取触发帧中指示的用于进行随机竞争的资源单元的数目，当回退值大于资源单元的数目时，则本次无法进行传输，并将回退值减去资源单元的数目，作为下一次OFDMA竞争的回退值；若回退值小于资源单元的数目时，则在用于进行随机竞争的资源单元中随机选取一个资源单元，进行数据通信。若获得了传输机会，但是传输失败，则需要扩大竞争回退窗口，重新随机一个回退值，继续进行竞争。这样，上述限定第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，第一STA的回退值小于第二STA的回退值可以有助于第一STA更快的竞争到用于传输第一类业务数据的资源。
103，第一STA向AP发送与第一STA相对应的第一类业务数据，AP接收第一STA发送的与该第一STA相对应的第一类业务数据。
第一STA在竞争到资源时，可以通过竞争到的资源向AP发送与第一STA相对应的 第一类业务数据。如图4以第一类业务数据是紧急报告为例说明，在AP收到STA发送的紧急报告时，还可以向STA发送多用户块确认(Multiple User Block Acknowledgement，M-BA)帧，也可以采用其他的确认方式，比如按顺序向每个STA发送确认(Acknowledge，ACK)帧，块确认(Block Acknowledgement，BA)帧，或者采用OFDMA的方式向多个STA同时发送ACK/BA帧。
步骤101至步骤103中使用触发帧触发传输紧急报告的流程可以参照图3所示的示意图。触发帧的帧结构可以参照图4所示的结构示意图。
有的业务数据对延迟的灵敏度要求较高，例如，紧急报告，对于一些长距离的传输，可以借助中继进行业务数据的转发。例如，在本申请的一个实施例中，上述步骤101可以是AP通过控制帧向第一STA发送控制帧，第一STA通过控制帧接收AP发送的控制帧，步骤103可以是第一STA通过中继向AP发送与第一STA相对应的第一类业务数据，AP通过中继接收第一STA发送的与该第一STA相对应的第一类业务数据。为了减小中继带来的延迟，还可以在AP可以在向中继传输控制帧时，同时向其它STA(例如STA1)发送控制帧。AP向STA1和中继发送控制帧时，可以对整个传输带宽进行资源分配，并对分配的不同资源约定并行处理的结束时间，这样，可以提高紧急报告的传输效率，如图9所示。
104，AP向第一STA发送MU-RTS帧，第一STA接收AP发送的MU-RTS帧。
在本申请的一个实施例中，所有的STA都可以设置为网络分配向量(Network Allocation Vector，NAV)，NAV也可以成为虚拟载波侦听。带有碰撞避免的载波侦听多址接入(Carrier Sense Multiple Access with Collision Avoidance，CSMA/CA)的基础在于载波侦听(Carrier Sensing,CS)。分布式协调功能(Distributed Coordination Function,DCF)同时通过物理载波侦听和虚拟载波侦听来判断媒体状态。只有物理载波侦听和虚拟载波侦听机制都认为信道为空闲，才认为信道是空闲的，否则认为信道是繁忙的。虚拟载波侦听可以声明对媒体的独占接入。被设置了NAV的STA进行虚拟载波侦听的结果始终为忙，即被设置了NAV的STA不会再主动竞争信道，AP可以在一定范围内设置NAV，建立传输机会(TXOP)，在TXOP时限内，部分STA可以独占媒介资源，可以发送单个或多个数据帧、管理帧和控制帧，这样在设定的时长内，AP和被静默的STA之间不能主动进行数据传输，AP可以通过调度一个STA进行上行数据的传输，也可以调度多个STA进行上行多用户的数据传输。
例如，在步骤101第一STA接收控制帧之前，第一STA还可以接收AP发送的MU-RTS帧，如图5和图6所示，以调度上行数据的传输。MU-RTS帧携带第三AID，第三AID用于指示后续AP会调度所述第一STA传输第一类业务数据。这样，STA收到MU-RTS帧之后，就知道接下来有第一类业务数据要传输，这样可以触发STA启动传输第一类业务数据的流程，还可以使得其它站点不再竞争资源，为AP请求的站点传输第一类业务数据提前预留传输机会，这样能够提高传输效率。
再如，在步骤101第一STA接收控制帧之前，AP还可以通过步骤106所示的方式通知STA进入传输第一类业务数据的准备工作，以调度上行数据的传输。
以第一类业务数据是紧急报告为例，MU-RTS帧携带第三AID，分两种情况：第一种情况，MU-RTS帧携带的AID只包括第三AID，不包含其他AID，即MU-RTS帧中只包 括比特位构成的数值为指定一个值的AID。第二种情况，MU-RTS帧同时包括第三AID和其他AID，这里其他AID的各个比特位构成的数值与第三AID的各个比特位构成的数值不同。
对于上述任一种情况，当MU-RTS中携带有第三AID时，所有STA都会得知后续的TXOP会调度紧急业务。对于这种TXOP，可以定义特殊的规则，例如，可以定义不允许其他基本服务集合(Basic Service Set，BSS)的AP和STA进行空间复用。空间复用虽然会增加整个系统的传输效率，但是也会影响当前基本服务集合紧急报告的传输。通过定义不允许其他BSS的AP和STA进行空间复用，可以保证当前基本服务集合紧急报告的传输。再如，还可以定义后续TXOP中会存在需要传输紧急报告STA才可以竞争的区间。又如，可以定义后续TXOP中进行OFDMA竞争时，减小需要传输紧急报告STA的回退窗口和回退值，而增大没有紧急报告的普通STA的回退窗口，这样，可以提高传输效率。
105，第一STA向AP反馈CTS帧，AP接收第一STA反馈的CTS帧。
STA收到MU-RTS帧之后，如果有第一类业务数据需要传输，可以向AP反馈CTS帧，如图5和图6所示。在本申请的一个实施例中，第一STA(如图5和图6中的STA1)和其它需要传输第一类业务数据的STA(如图5和图6中的STA2和STA3)都可以接收AP发送的MU-RTS帧，且收到MU-RTS帧并且有第一类业务数据需要传输的STA可以向AP发送同步CTS帧，即多个STA同时向AP发送CTS帧，且各个STA发送的CTS帧的物理层结构相同。
针对步骤104中MU-RTS帧携带第三AID的两种情况：
第一种情况，MU-RTS帧携带的AID只包括第三AID，不包含其他AID，即MU-RTS帧中只包括比特位构成的数值为指定一个值的AID。当AP发送带有第三AID的MU-RTS帧时，只有需要紧急报告的STA才会向AP反馈CTS帧。当AP收到CTS帧时，会得知STA有传输紧急报告的需求。
第二种情况，MU-RTS帧同时包括第三AID和其他AID，这里其他AID的各个比特位构成的数值与第三AID的各个比特位构成的数值不同。当AP发送带有第三AID和其他AID的MU-RTS帧时，带有紧急报告传输需求的STA和被指定的STA都会回复CTS帧。AP收到CTS帧，但AP并不知道是否是有紧急报告传输需求的STA发送的CTS。这种方法的好处是AP可以保护一个同时允许紧急报告和普通数据传输的TXOP。
在本申请的一个实施例中，第一STA和其它需要传输第一类业务数据的STA(如图5和图6中的STA2和STA3)都可以接收AP发送的MU-RTS帧，且受到MU-RTS帧并且有第一类业务数据需要传输的STA可以向AP发送同步CTS帧，即多个STA同时向AP发送CTS帧，且各个STA发送的CTS帧的物理层结构相同。
106，AP向第一STA发送TIM，第一STA接收AP发送的TIM。
在步骤101第一STA接收控制帧之前，AP还可以通过下列方式通知STA进入传输第一类业务数据的准备工作。例如，AP可以向第一STA发送Beacon帧，该Beacon帧包括TIM，TIM用于指示当前Beacon帧周期内AP会触发第一STA传输第一类业务数据。TIM可以用于AP提前通知STA准备传输第一类业务数据。具体地，TIM可以提前通知准备传输第一类业务数据的STA不再休眠，或处于唤醒状态。这样可以降低传输第一类业务数据的传输时延，能够提高传输效率。
由于信道状态或距离限制，有些STA(如第三STA)有传输第一类业务数据的需求，但却无法向AP传输相应的第一类业务数据时，这时可以通过周边的其它STA(例如第一STA)帮助转发传输需求或缓存信息，如缓存数据的大小等。例如，第三STA可以向第一STA发送需求信息，第一STA可以接收第三STA发送的需求信息，其中，需求信息包括第四AID，第四AID用于指示第三STA的传输第一类业务数据的传输需求，或者，第四AID用于指示第三STA需要传输的与第三STA相应的第一类业务数据的大小。这样，第一STA在竞争到的传输与第一STA相应的第一类业务数据时，第一STA还可以通过竞争到的资源向AP传输第三STA的传输第一类业务数据的传输需求或向AP传输与第三STS相应的第一类业务数据的大小。换句话说，第一STA可以帮助周边无法传输相应第一类业务数据的STA(如第三STA)向AP发送需求信息，这样AP在得知第三STA有传输第一类业务数据的需求时，可以通过向第三STA发送触发帧，触发STA上报第一类业务数据的传输流程，也可以使得第三STA通过中继等方式向AP上报第一类业务数据。
上述第三STA向第一STA发送的需求信息可以是通过广播或单播的形式发送，本申请实施例对此不做限制。
在本申请的一个实施例中，可以利用媒体接入控制(Media Access Control，MAC)帧中帧头的高吞吐率控制字段(High Throughput Control)中的高效聚合控制(High Efficient Aggregated Control，HE-A-Control)字段承载需求信息中的第四AID，如图10所示。
本申请实施例中的第一STA可以是与AP之间有第一类业务数据传输需求的任一个STA。
应理解，在本申请的各种实施例中，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，而不应对本申请实施例的实施过程构成任何限定。例如，步骤104和步骤105可以在步骤101之前执行，如图5所示。步骤106可以在步骤101之前执行，如图8所示。
在本申请的一个实施例中，步骤104,105,106为可选步骤。并且，步骤104，105与步骤106都可以有提前通知STA的作用，所以，步骤104，105与步骤可以为并列可选的。在本申请的一个实施例中，可选择利用步骤104,105提前通知STA，也可以选用106提前通知STA，还可以不提前通知STA，执行步骤101至步骤103。
图3是本申请一个实施例中利用触发帧TF-R携带的AID(如第一AID)触发紧急报告传输的示意图。图3以画出的一个AP和三个STA：STA1、STA2、STA3为例进行示例性说明。
301，AP向多个STA发送TF-R帧，TF-R帧包括第一AID字段和资源单元指示字段。资源单元指示字段用于指示传输紧急报告的资源。第一AID用于指示对应资源单元指示字段指示的资源是用于多个STA基于OFDMA竞争传输紧急报告的资源。TF-R帧的帧结构示意图如图4所示。
302，多个STA基于OFDMA竞争用于传输紧急报告的资源。
在图3中，假设STA1、STA2有紧急报告需要传输，而STA3仅有一般数据需要传输。三个STA收到AP发送的触发帧时，只有STA1和STA2竞争用于传输紧急报告的资源。STA3仅会竞争用于传输一般数据的资源。优选地，STA1和STA2可以同时竞争用于传输紧急报告的资源和用于传输一般数据的资源，这样可以实现更快的竞争到资源。
STA在收到TF-R帧之后，根据TF-R帧中可以用于随机竞争的资源单元的数目，以及自己本身的回退值，若回退值大于资源单元数目，本次无法传输，即进入如STA2的竞争信道回退，用本次的回退值减去资源单元数目为下次OFDMA竞争的回退值；若回退值小于或者等于资源单元数目，则在可以用于随机竞争的资源单元中随机选取一个资源单元，用于紧急报告的传输，如STA1。
303，当STA1竞争到资源时，通过竞争到的资源向AP传输紧急报告。
有紧急报告传输需求的STA(如STA2)的随机回退时间和随机回退值小于没有紧急报告的STA(如STA3)的随机回退时间和随机回退值。
当设STA1、STA2都竞争到信道时，STA1和STA2可以采用频分复用的方式同时向AP传输各自对应的紧急报告；而STA3竞争到信道时，可以利用竞争到的信道传输一般数据，如图3中的步骤307所示。
304，AP收到STA1发送的紧急报告时，向STA1传输M-BA，表示确认已收到STA1的紧急报告。
后续的步骤305至步骤308和步骤301至步骤304一一对应相同或相似，为避免重复，在此不再详细赘述。
图4是本申请一个实施例的包括AID(如第一AID)的触发帧的帧结构示意图。图4的触发帧包括MAC帧头、公共区域和逐个站点域。其中，MAC帧头包括帧控制字段，公共区域包括触发帧类型，逐个站点区域可以包括逐个站点字段1、…、逐个站点字段N…，且，逐个站点字段N(例如逐个站点字段1)可以包括第一AID字段、OFDMA竞争回退参数字段和资源单元指示字段。资源单元指示字段用于指示传输紧急报告的资源
图5是本申请一个实施例的利用MU-RTS帧携带的AID(如第三AID)建立紧急报告的传输机会。图5以画出的一个AP和三个STA：STA1、STA2、STA3为例进行示例性说明。
501，AP向多个STA发送MU-RTS帧，MU-RTS帧包括第三AID，多个STA接收MU-RTS帧。
502，需要传输紧急报告的STA收到MU-RTS后，向AP反馈同步CTS帧。同步CTS即需要上报CTS的多个STA同时向AP发送CTS，且各个CTS的物理层结构相同。
503，AP向多个STA发送TF-R帧，且TF-R帧包括第一AID，第一AID用于指示多个STA基于OFDMA竞争用于传输紧急报告的资源。
504，多个STA基于OFDMA竞争用于传输紧急报告的资源。
505，当STA1、STA2、STA3都有紧急报告需要传输，且都竞争到用于传输紧急报告的资源时，STA1、STA2、STA3向AP发送各自对应的紧急报告。
506，AP收到STA1、STA2、STA3发送的紧急报告时，向STA反馈M-BA帧，表示确认已收到相应的紧急报告。
图6是本申请另一实施例的利用MU-RTS帧携带的AID(如第三AID)建立紧急报告的传输机会。
601，AP向多个STA发送MU-RTS帧，STA接收MU-RTS帧，MU-RTS帧包括第三AID。
602，收到MU-RTS帧的STA向AP发送CTS帧，AP接收STA反馈的CTS帧。
当收到MU-RTS帧的STA为多个时，需要传输紧急报告的多个STA收到MU-RTS后，向AP反馈同步CTS帧。同步CTS即需要上报CTS的多个STA同时向AP发送CTS，且各个CTS的物理层结构相同。
603，AP向多个STA发送接入帧，例如接入帧可以为带有紧急RAW IE的帧。带有紧急RAW IE的帧可以包括第二AID和/或RAW控制字段。第二AID用于指示STA竞争用于传输紧急报告的资源，RAW控制字段用于指示接入窗口的业务数据类型为紧急报告，有紧急报告的STA可以采用RAW接入。
604，多个STA采用基于CSMA/CA的方式竞争资源。
接收到带有紧急RAW IE的帧的STA可以进行资源竞争，例如，采用基于CSMA/CA的方式竞争，这种可以利用RAW传输紧急报告。
605，竞争到资源的STA1在相应的资源上向AP发送紧急报告，AP接收STA1发送的紧急报告。
对于STA3，假设STA3没有紧急报告需要传输，由于RAW仅用于传输紧急报告，即使STA3有一般数据需要传输也无法通过RAW传输。所以，图6中STA3不传输数据。
606，AP向STA1发送确认帧。
607，竞争到资源的STA2在相应的资源上向AP发送紧急报告，AP接收STA2发送的紧急报告。
608，AP向STA2发送确认帧。
图7是本申请一个实施例的带有紧急接入窗口信息元素的帧的结构示意图。图7的带有紧急接入窗口信息元素的帧包括RAW控制字段、窗口持续时长字段、窗口开始时间字段、第二AID、信道指示字段和周期性指示字段，其中，RAW控制字段和第二AID只要包括其中的至少一个即可。
RAW控制字段用来指示接入窗口的类型为紧急报告，这样可以对可能存在的多种接入窗口的类型进行区别指示。窗口持续时长和窗口开始时间指示着限制竞争窗口的区间，还可以采用其他方式，比如开始时间和结束时间等去指示，也可以采用默认的时长或者区间。第二AID用来指示需要传输紧急报告的STA进行紧急报告的传输。如果RAW控制字段中定义了紧急报告的接入窗口类型，则第二AID可以省略。如果RAW的类型中没有单独为紧急报告窗口定义类型，则可以采用第二AID去进一步指示需要传输紧急报告的STA进行紧急报告的传输。信道指示用于指示允许STA竞争的信道。周期性指示用于定义是否采用周期性的竞争窗口。
图8是本申请一个实施例的通过信标帧携带的TIM指示触发传输紧急报告的示意图。图8以画出的一个AP和三个STA：STA1、STA2、STA3为例进行示例性说明。
801，AP向多个STA发送信标(Beacon)帧，Beacon帧包括TIM字段。
TIM的每一个比特对应一个关联的STA。TIM的比特置1，表示AP处缓存着所对应STA的下行数据，若置0，则表示AP处不包含所对应STA的下行数据。TIM中不同的比特位与不同的STA对应。
在本申请的一个实施例中，还可以复用TIM，TIM用于指示当前beacon帧周期内AP会触发STA传输紧急报告。TIM可以用于AP提前通知STA准备传输紧急报告，例如，提前通知准备传输紧急报告的STA不再休眠，或处于唤醒状态。这样提前通知可以减小 传输时间，提高传输效率。
802，AP向多个STA发送TF-R帧，其中，TF-R帧携带第一AID。
步骤802的具体流程参照步骤301，在此不再详细赘述。
803，多个STA进行OFDMA竞争。
步骤802的具体流程参照步骤302，在此不再详细赘述。
804，多个STA在竞争到的资源上发送与各自对应的紧急报告。
步骤802的具体流程参照步骤303，在此不再详细赘述。
805，AP向多个STA发送M-BA帧。
步骤802的具体流程参照步骤304，在此不再详细赘述。
图9是本申请一个实施例的利用中继传输紧急报告的示意图。
对于部分STA和AP之间的长距离的传输需求，可能需要借助中继进行业务数据的转发。中继可以从AP接收控制帧并向与之关联的STA发送控制帧，需要传输第一类业务数据的STA收到中继发送的控制帧，可以根据控制帧进行信道竞争，并在竞争到的信道上向中继传输紧急报告。换句话说，中继可以在AP和STA之间转发触发帧和紧急报告。但是，上述利用中继操作的方式可能会增加延迟。
为了减小延迟，AP可以在向中继传输控制帧时，在步骤901，AP可以同时向其它STA(例如STA1)发送TF-R帧，且TF-R帧包括AID X。
TF-R帧还可以包括对整个传输带宽的资源分配信息，对整个传输带宽进行资源分配，部分资源分配给与其关联的需要传输紧急业务的STA进行竞争传输，比如图中的信道2；将部分资源，如图中的信道1，分配给中继(Relay)使得中继在AP和STA之间转发触发帧和紧急报告的转发，并使得中继收集与其关联的STA的紧急报告，并约定并行处理结束时间。在步骤902，在信道2，STA1接收AP发送的TF-R帧，并进行紧急报告的OFDMA竞争，在竞争到的信道上向AP传输紧急报告，AP收到紧急报告时向STA反馈确认帧。在步骤903中，在信道1，中继接收TF-R帧并将其转发至与其关联的STA(例如STA2)，STA2收到TF-R帧，进行紧急报告的OFDMA竞争，并在竞争到的资源上传输紧急报告。步骤902和步骤903的结束时间为资源分配信息中约定的并行处理结束时间。
步骤904，在并行处理结束时间之后，中继将收集到的紧急报告再转发给AP，或者，中继利用信道2，采用OFDMA竞争的方式，提前将紧急报告发送给AP。步骤905，AP收到中继转发的收集到的AP后，向中继发送确认帧，确认帧用于表示确认AP已收到中继发送的紧急报告。这样，利用中继可以提高紧急报告的传输效率。
图10是本申请一个实施例的利用HE-A-Control承载AID(如第四AID)的缓存信息的帧的结构示意图。
本申请实施例中的第四AID包括在需求信息中，且第四AID用于指示第三STA传输第一类业务数据的需求或者指示第三STA需要传输的与第三STA相应的第一类业务的数据大小。第三STA为有紧急报告传输需求，但由于信道状况或距离限制在有些情况下无法将紧急报告传输给AP的站点。第一STA为第三STA周边的站点，可以帮助第三STA完成紧急报告需求信息的传输，这样可以提高第三STA传输紧急报告的传输需求。
图10表示的帧结构中非常高吞吐率(Very High Throughput，VHT)占1个比特，高效(High Efficient，HE)占一个比特，聚合字段(Aggregated Control)占30个比特。聚 合控制字段包括控制1(Control 1)字段、…、控制N(Control N)字段和填充字段(Padding)，控制1字段包括控制ID(Control ID)字段和控制信息(Control Info)字段，控制信息字段包括缓存信息和需求次数。在本申请的另一个实施例中，可以利用图10所示的高吞吐率控制(High Throughput Control)字段中的高效聚合控制(High Efficient Aggregated Control，HE-A-Control)字段中的控制ID字段承载第四AID的缓存信息。
HE-A-Control字段可以承载1～N个控制信令，其中通过控制ID用于指示控制信令的类型为第四AID的缓存信息。在本申请的一个实施例中，可以定义一种新的控制信令类型为第四AID的缓存信息，可以承载的信息包括第四AID的缓存信息大小，以及收集到的缓存需求的次数。在本申请的另一个实施例中，可以先定义一种缓存信息的控制信令，然后在通过比特指示缓存信息是自己的缓存信息，还是其他STA的缓存信息。
为了防止需求的广播产生广播风暴，即防止不断的重复广播下去，可以对是否允许转发需求以及转发的次数进行限制。比如，可以限制，只有自己有需求的STA才可以广播自己的需求，而其他STA，只可以将需求发送给AP，而不可以继续广播该需求。
上面结合图2至图10详细说明了利用控制帧中的AID或RAW控制字段指示有第一类业务数据传输需求的STA进行上行的数据传输。下面结合图11和图12说明AP下行传输第一类业务数据。
图11是本申请另一实施例的传输业务数据的方法的示意性流程图。
1101，AP获取数据包，数据包包括资源指示信息和广播信息，资源指示信息包括第一AID。
AP可以采用多用户格式下行传输业务数据，资源指示信息可以包括在数据包的高效信令B即HE-SIG-B字段。第一AID用于指示参与传输第一类业务数据的站点STA读取广播信息。
1102，AP向STA发送数据包，STA接收AP发送的数据包。
1103，STA根据数据包中的第一AID读取广播信息。
数据包包括资源指示信息和广播信息，资源指示信息包括第一AID。第一AID用于指示参与传输第一类业务数据的站点STA读取广播信息，而不参与第一类业务数据传输的紧急报告不需要读取广播信息，换句话说，参与第一类业务数据的STA可以读取数据包中的数据，如图12中读取紧急报告。STA收到数据包，可以根据数据包携带的信息指示STA读取广播信息，这样可以完成下行业务数据的传输，提高业务数据的传输效率。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
图12是本申请一个实施例的利用HE-SIG-B字段携带的第一AID进行资源指示的示意图。图12中的数据包的帧结构包括传统短训练(Legacy Short Training field，L-STF)字段、传统长训练(Legacy Long Training field，L-LTF)字段、传统信令字段(Legacy Signal field，L-SIG)及其重复、高效信令(High Efficiency Signal field，HE-SIG)A字段、高效信令B字段、高效短训练(High Efficiency Short Training field，HE-STF)字段、高效长训练(High Efficiency Long Training field，HE-LTF)字段和数据(Data)字段，这里的数据字段以紧急报告为例进行示例性说明。
上面结合图2至图12详细描述了根据本申请实施例的传输业务数据的方法，下面将结合图13到图20描述根据本申请实施例的传输业务数据的接入点、站点。
图13是本申请一个实施例的站点的框图。图13的站点10包括第一接收单元11、竞争单元12和第一发送单元13。
第一接收单元11用于接收控制帧，控制帧包括控制信息，控制信息用于指示STA竞争用于传输第一类业务数据的资源。
竞争单元12用于根据第一接收单元接收的控制信息竞争资源。
第一发送单元13用于在竞争单元竞争到的资源上向接入点AP发送与STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
根据本申请实施例站点可以对应于本申请方法实施例图2中的第一站点以及图3、图5、图6和图8中的站点，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上述方法中对应STA的相应流程，为了简洁，在此不再赘述。
图14是本申请一个实施例的接入点的框图。图14的接入点20包括第一发送单元21和第一接收单元22。
第一发送单元21用于向第一站点STA发送控制帧，控制帧包括控制信息，控制信息用于指示第一STA竞争用于传输第一类业务数据的资源。
第一接收单元22用于在第一STA竞争到的资源上，接收与第一STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
根据本申请实施例接入点可以对应于本申请方法实施例图2中的AP以及图3、图5、图6和图8中的AP，并且，该AP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上述方法中对应AP的相应流程，为了简洁，在此不再赘述。
图15是本申请另一实施例的接入点的框图。图15的接入点30包括获取单元31和第一发送单元32。
获取单元31用于获取数据包，数据包包括资源指示信息和广播信息，资源指示信息包括第一AID，第一AID用于指示参与传输第一类业务数据的站点STA读取广播信息。
第一发送单元32用于向STA发送获取单元获取的数据包。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
根据本申请实施例接入点可以对应于本申请方法实施例图11中的AP，并且，该AP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上述方法中对应AP的相应流程，为了简洁，在此不再赘述。
图16是本申请另一实施例的站点的框图。图16的站点40包括第一接收单元41和读数据单元42。
第一接收单元41用于接收数据包，数据包包括资源指示信息和广播信息，资源指示 信息包括第一AID，第一AID用于指示参与传输第一类业务数据的STA读取所述广播信息。
读数据单元42用于根据第一接收单元接收的数据包中的第一AID读取所述广播信息。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
根据本申请实施例站点可以对应于本申请方法实施例图11中的STA，并且，该STA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上述方法中对应STA的相应流程，为了简洁，在此不再赘述。
图17是本申请另一实施例的站点的框图。图17的站点50包括发射机51、接收机52、处理器53和存储器54，且各个组件可以通过总线系统55耦合在一起。
具体地，接收机52用于接收控制帧，控制帧包括控制信息，控制信息用于指示STA竞争用于传输第一类业务数据的资源。
处理器53用于根据接收的控制信息竞争资源。
发射机51用于在竞争单元竞争到的资源上向接入点AP发送与STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
根据本申请实施例站点可以对应于本申请方法实施例图2中的第一站点以及图3、图5、图6和图8中的站点，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上述方法中对应STA的相应流程，为了简洁，在此不再赘述。
图18是本申请另一实施例的接入点的框图。图18的接入点60包括发射机61、接收机62、处理器63和存储器64，且各个组件可以通过总线系统65耦合在一起。
具体地，发射机61用于向第一站点STA发送控制帧，控制帧包括控制信息，控制信息用于指示第一STA竞争用于传输第一类业务数据的资源。
接收机62用于在第一STA竞争到的资源上，接收与第一STA相应的第一类业务数据。
本申请实施例通过AP触发STA进行第一类业务数据的传输流程，并使STA在竞争到的资源上向AP发送第一类业务数据，这样可以减小竞争延迟，能够提高传输效率。
根据本申请实施例接入点可以对应于本申请方法实施例图2中的AP以及图3、图5、图6和图8中的AP，并且，该AP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上述方法中对应AP的相应流程，为了简洁，在此不再赘述。
图19是本申请另一实施例的接入点的框图。图18的接入点包括发射机71、处理器72和存储器73，且各个组件可以通过总线系统74耦合在一起。
具体地，处理器72用于获取数据包，数据包包括资源指示信息和广播信息，资源指示信息包括第一AID，第一AID用于指示参与传输第一类业务数据的站点STA读取广播信息。
发射机71用于向STA发送获取的数据包。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
根据本申请实施例接入点可以对应于本申请方法实施例图11中的AP，并且，该AP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上述方法中对应AP的相应流程，为了简洁，在此不再赘述。
图20是本申请另一实施例的站点的框图。图18的站点包括接收机81、处理器82和存储器83，且各个组件可以通过总线系统84耦合在一起。
具体地，接收机81用于接收数据包，数据包包括资源指示信息和广播信息，资源指示信息包括第一AID，第一AID用于指示参与传输第一类业务数据的STA读取所述广播信息。
处理器82用于根据接收的数据包中的第一AID读取所述广播信息。
本申请实施例通过AP向STA发送包括资源指示信息和广播信息的数据包，这样STA收到数据包可以根据资源指示信息中的AID启动第一类业务数据的传输流程，这样能够提高传输效率。
根据本申请实施例站点可以对应于本申请方法实施例图11中的STA，并且，该STA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上述方法中对应STA的相应流程，为了简洁，在此不再赘述。
上述图17至图20中的处理器控制接入点或站点的操作，并可用于处理信号。存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。发射机和接收机可以耦合到天线。接入点或站点的各个组件通过总线系统耦合在一起，其中总线系统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。
上述本申请实施例揭示的方法可以应用于处理器、接收机和发射机中，或者由处理器、接收机和发射机实现。在实现过程中，上述方法的各步骤可以通过处理器、接收机和发射机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申请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。结合本申请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，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
应理解，在本申请的各种实施例中，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，而不应对本申请实施例的实施过程 构成任何限定。
应理解，在本申请实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
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申请的范围。
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(Random Access Memory，RAM)、内存、只读存储器(Read-Only Memory，ROM)、电可编程只读存储器(Electrically Programmable Read-Only Memory，EPROM)、电可擦除可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、寄存器、硬盘、可移动磁盘、致密盘只读存储器(Compact Disc Read-Only Memory，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申请进行了详细描述，但本申请并不限于此。在不脱离本申请的精神和实质的前提下，本领域普通技术人员可以对本申请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申请的涵盖范围内。

Claims (42)

  1. 一种传输业务数据的方法，其特征在于，包括：
    第一站点STA接收控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述第一STA竞争用于传输第一类业务数据的资源；
    所述第一STA根据所述控制信息竞争资源；
    所述第一STA在竞争到的资源上向接入点AP发送与所述第一STA相应的第一类业务数据。
  2. 如权利要求1所述的方法，其特征在于，所述控制信息为第一关联标识AID，
    其中，
    所述第一STA接收控制帧包括：
    所述第一STA接收触发帧，所述触发帧携带所述第一AID。
  3. 如权利要求2所述的方法，其特征在于，所述第一AID用于指示所述第一STA基于正交频分多址接入OFDMA随机竞争资源，所述第一STA根据所述控制信息竞争资源包括：
    所述第一STA基于OFDMA随机竞争资源。
  4. 如权利要求2或3所述的方法，其特征在于，所述第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述第一STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
  5. 如权利要求1所述的方法，其特征在于，所述第一STA接收控制帧，包括：
    所述第一STA接收所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口RAW控制字段，所述第二AID用于指示所述第一STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
  6. 如权利要求1-5中任一项所述的方法，其特征在于，在所述第一STA接收控制帧之前，所述方法还包括：
    所述第一STA接收多用户请求发送MU-RTS帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述第一STA传输第一类业务数据；
    所述第一STA向所述AP发送允许发送CTS帧。
  7. 如权利要求1-5中任一项所述的方法，其特征在于，在所述第一STA接收控制帧之前，所述方法还包括：
    所述第一STA接收业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP会触发所述第一STA传输第一类业务数据。
  8. 如权利要求1-7中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一STA接收第三STA发送的需求信息，所述需求信息包括第四AID，所述第四AID用于指示所述第三STA传输第一类业务数据的需求或者指示所述第三STA需要传输的与所述第三STA相应的第一类业务数据的大小；
    所述第一STA在竞争到的资源上向AP发送所述第三STA传输第一类业务数据的需 求或发送与所述第三STA相应的第一类业务的数据大小。
  9. 如权利要求8所述的方法，其特征在于，所述第四AID承载在所述需求信息相应帧的高效聚合控制字段。
  10. 如权利要求1-9中任一项所述的方法，其特征在于，所述第一类业务数据为紧急报告。
  11. 一种传输业务数据的方法，其特征在于，包括：
    接入点AP向第一站点STA发送控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述第一STA竞争用于传输第一类业务数据的资源；
    所述AP在所述第一STA竞争到的资源上，接收与所述第一STA相应的第一类业务数据。
  12. 如权利要求11所述的方法，其特征在于，所述控制信息为第一关联标识AID，
    其中，
    所述AP向第一STA发送控制帧包括：
    所述AP向第一STA发送触发帧，所述触发帧携带所述第一AID。
  13. 如权利要求11或12所述的方法，其特征在于，所述第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述第一STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
  14. 如权利要求11所述的方法，其特征在于，所述AP向第一STA发送控制帧包括：
    所述AP向第一STA发送所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口RAW控制字段，所述第二AID用于指示所述第一STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
  15. 如权利要求11-14中任一项所述的方法，其特征在于，在所述AP向第一STA发送控制帧之前，所述方法还包括：
    所述AP向所述第一STA发送多用户允许发送MU-RTS帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述第一STA传输第一类业务数据；
    所述AP接收所述第一STA发送的允许发送CTS帧。
  16. 如权利要求11-14中任一项所述的方法，其特征在于，在所述AP向第一STA发送控制帧之前，所述方法还包括：
    所述AP向所述第一STA发送业务指示映射TIM，所述TIM用于指示当前信标(Beacon)帧周期内所述AP会触发所述第一STA传输第一类业务数据。
  17. 如权利要求11-16中任一项所述的方法，其特征在于，所述第一类业务数据为紧急业务。
  18. 一种传输业务数据的方法，其特征在于，包括：
    接入点AP获取数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的站点STA读取所述广播信息；
    所述AP向所述STA发送所述数据包。
  19. 如权利要求18所述的方法，其特征在于，所述方法还包括：
    所述AP向所述STA发送业务指示映射TIM，所述TIM用于指示当前信标Beacon帧周期内所述AP缓存有第一类业务数据的多播信息。
  20. 一种传输业务的方法，其特征在于，包括：
    站点STA接收数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的所述STA读取所述广播信息；
    所述STA根据所述第一AID读取所述广播信息。
  21. 如权利要求20所述的方法，其特征在于，所述方法还包括：
    所述STA接收业务指示映射TIM，所述TIM用于指示当前信标Beacon帧周期内所述AP缓存有第一类业务数据的多播信息。
  22. 一种站点STA，其特征在于，包括：
    第一接收单元，用于接收控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述STA竞争用于传输第一类业务数据的资源；
    竞争单元，用于根据所述第一接收单元接收的所述控制信息竞争资源；
    第一发送单元，用于在所述竞争单元竞争到的资源上向接入点AP发送与所述STA相应的第一类业务数据。
  23. 如权利要求22所述的STA，其特征在于，所述控制信息为第一关联标识AID，其中，所述第一接收单元具体用于接收触发帧，所述触发帧携带所述第一AID。
  24. 如权利要求23所述的STA，其特征在于，所述第一AID用于指示所述STA基于正交频分多址接入OFDMA随机竞争资源，所述竞争单元具体用于基于OFDMA随机竞争资源。
  25. 如权利要求23或24所述的STA，其特征在于，所述STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
  26. 如权利要求22所述的STA，其特征在于，所述第一接收单元具体用于接收所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口RAW控制字段，所述第二AID用于指示所述STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
  27. 如权利要求22-26中任一项所述的STA，其特征在于，所述STA还包括：
    第二接收单元，用于接收多用户请求发送MU-RTS帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述STA传输第一类业务数据；
    第二发送单元，用于向所述AP发送允许发送CTS帧。
  28. 如权利要求22-26中任一项所述的STA，其特征在于，所述STA还包括：
    第三接收单元，用于接收业务指示映射TIM，所述TIM用于指示当前信标Beacon帧周期内所述AP会触发所述第一STA传输第一类业务数据。
  29. 如权利要求22-28中任一项所述的STA，其特征在于，所述STA还包括：
    第四接收单元，用于接收第三STA发送的需求信息，所述需求信息包括第四AID，所述第四AID用于指示所述第三STA传输第一类业务数据的需求或者指示所述第三STA需要传输的与所述第三STA相应的第一类业务数据的大小；
    第三发送单元，用于在竞争到的资源上向AP发送所述第三STA传输第一类业务数据的需求或发送与所述第三STA相应的第一类业务的数据大小。
  30. 如权利要求29所述的STA，其特征在于，所述第四AID承载在所述需求信息相应帧的高效聚合控制字段。
  31. 如权利要求22-30中任一项所述的STA，其特征在于，所述第一类业务数据为紧急报告。
  32. 一种接入点AP，其特征在于，包括：
    第一发送单元，用于向第一站点STA发送控制帧，所述控制帧包括控制信息，所述控制信息用于指示所述第一STA竞争用于传输第一类业务数据的资源；
    第一接收单元，用于在所述第一STA竞争到的资源上，接收与所述第一STA相应的第一类业务数据。
  33. 如权利要求32所述的AP，其特征在于，所述控制信息为第一关联标识AID，其中，所述第一发送单元具体用于向第一STA发送触发帧，所述触发帧携带所述第一AID。
  34. 如权利要求32或33所述的AP，其特征在于，所述第一STA的竞争回退窗口小于第二STA的竞争回退窗口，和/或，所述第一STA的回退值小于所述第二STA的回退值，其中，所述第二STA不用于传输第一类业务数据。
  35. 如权利要32所述的AP，其特征在于，所述第一发送单元具体用于向第一STA发送所述AP配置的接入帧，其中，所述接入帧包括所述第二AID和/或限制接入窗口RAW控制字段，所述第二AID用于指示所述第一STA竞争用于传输第一类业务数据的资源，所述RAW控制字段用于指示接入窗口的业务数据类型为第一类业务数据。
  36. 如权利要求32-35中任一项所述的AP，其特征在于，所述AP还包括：
    第二发送单元，用于向所述第一STA发送多用户允许发送MU-RTS帧，所述MU-RTS帧携带第三AID，所述第三AID用于指示后续所述AP会调度所述第一STA传输第一类业务数据；
    第二接收单元，用于接收所述第一STA发送的允许发送CTS帧。
  37. 如权利要求32-35中任一项所述的AP，其特征在于，所述AP还包括：
    第三发送单元，用于向所述第一STA发送业务指示映射TIM，所述TIM用于指示当前信标Beacon帧周期内所述AP会触发所述第一STA传输第一类业务数据。
  38. 如权利要求32-37中任一项所述的AP，其特征在于，所述第一类业务数据为紧急业务。
  39. 一种接入点AP，其特征在于，包括：
    获取单元，用于获取数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的站点STA读取所述广播信息；
    第一发送单元，用于向所述STA发送所述获取单元获取的所述数据包。
  40. 如权利要求39所述的AP，其特征在于，所述AP还包括：
    第二发送单元，用于向所述STA发送业务指示映射TIM，所述TIM用于指示当前信标Beacon帧周期内所述AP缓存有第一类业务数据的多播信息。
  41. 一种站点STA，其特征在于，包括：
    第一接收单元，用于接收数据包，所述数据包包括资源指示信息和广播信息，所述资源指示信息包括第一AID，所述第一AID用于指示参与传输第一类业务数据的所述STA读取所述广播信息；
    读数据单元，用于根据所述第一接收单元接收的数据包中的所述第一AID读取所述广播信息。
  42. 如权利要求41所述的STA，其特征在于，所述STA还包括：
    第二接收单元，用于接收业务指示映射TIM，所述TIM用于指示当前信标Beacon帧周期内所述AP缓存有第一类业务数据的多播信息。
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