WO2016149970A1 - 上行多用户传输触发帧的发送方法、接入点和站点 - Google Patents

上行多用户传输触发帧的发送方法、接入点和站点 Download PDF

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Publication number
WO2016149970A1
WO2016149970A1 PCT/CN2015/076889 CN2015076889W WO2016149970A1 WO 2016149970 A1 WO2016149970 A1 WO 2016149970A1 CN 2015076889 W CN2015076889 W CN 2015076889W WO 2016149970 A1 WO2016149970 A1 WO 2016149970A1
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WIPO (PCT)
Prior art keywords
trigger frame
site
transmission
station
information
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PCT/CN2015/076889
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English (en)
French (fr)
Inventor
郭宇宸
林梅露
杨讯
于健
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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 EP19205120.9A priority Critical patent/EP3678443B1/en
Priority to CA2980623A priority patent/CA2980623C/en
Priority to CN202011329373.5A priority patent/CN112672429B/zh
Priority to EP15885908.2A priority patent/EP3267755B1/en
Priority to KR1020177030148A priority patent/KR101957626B1/ko
Priority to AU2015387838A priority patent/AU2015387838B2/en
Priority to EP23163095.5A priority patent/EP4236575A3/en
Priority to CN201580077357.2A priority patent/CN107432036B/zh
Priority to JP2017550208A priority patent/JP6575948B2/ja
Publication of WO2016149970A1 publication Critical patent/WO2016149970A1/zh
Priority to US15/713,247 priority patent/US10390355B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H04W74/06—Scheduled access using polling
    • 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]
    • 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
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, an access point, and a station for transmitting an uplink multi-user transmission trigger frame.
  • Orthogonal Frequency Division Multiplexing is the basic transmission method of current wireless communication. It is widely used in Long Term Evolution (LTE) and global microwave access (English). : Worldwide Interoperability for Microwave Access (WiMAX), Wireless Fidelity (English: Wireless Fidelity, referred to as WiFi) and other wireless communication systems. Not only that, OFDM is further applied to fixed network transmission, such as optical fiber, copper stranded wire, cable and other transmission methods.
  • the basic principle of OFDM is to minimize the subcarrier spacing within the range allowed by the orthogonality of the subcarriers, so as to ensure the formation of multiple parallel and non-interfering paths, and at the same time improve the frequency utilization efficiency of the system.
  • OFDM Since OFDM has the above characteristics, if sub-carriers that do not interfere with each other of OFDM are allocated to a plurality of users, OFDM can be utilized to implement multi-user access or data transmission. It can be seen that the use of OFDMA can realize parallel transmission of multi-user data and improve data transmission concurrency.
  • Multi-input Multiple-Output (MIMO) technology can provide transmit (receive) beamforming to effectively improve transmit (receive) power and effectively improve the reliability of the communication system; In terms of MIMO technology, it can generate additional spatial freedom to multiply the throughput of the system and effectively increase the speed of the communication system. Because of these advantages of MIMO technology, MIMO technology has become one of the key technologies of the 802.11n and 802.11ac standard protocols. In addition, due to the beamforming technology, the sender can pass multiple empty The inter-stream sends data to multiple users, and can also receive data sent from multiple users on different spatial streams, thereby achieving parallel transmission of multi-user data and improving the concurrency of data transmission.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • MU-MIMO Multi-User-MIMO
  • OFDMA and MU- MIMO hybrid transmission mode in which the station (English: Station, abbreviated as STA) needs to know its transmission configuration and parameters through an access point (English: Access Point, AP for short), for example, which spectrum resource is used and the number of spatial streams used. Modulation coding method and time synchronization information used. Therefore, the way in which the access point triggers the site for uplink multi-user transmission has gained widespread attention.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • AP Access Point
  • the station For the uplink multi-user transmission triggered by the access point, if the station does not know the time at which the access point sends the trigger frame, it must always listen to the channel before receiving the trigger frame for uplink transmission, which is not conducive to the energy saving of the site.
  • the access point may perform periodic broadcast of the trigger frame scheduling information unit by using a beacon frame, where the trigger frame scheduling information unit carries the trigger frame to be sent after the current beacon frame. The number and the time at which the first trigger frame is sent. Further, when the triggering frame is sent, the access point may carry the sending interval of the next triggering frame in the triggering frame, that is, after the sending interval, the access point will send the triggering frame again.
  • the access point carries the transmission interval of the next trigger frame in each trigger frame, since the trigger signaling of the trigger frame is located in the preamble of its physical layer, and this part of the signaling resource is more valuable, it will bring a larger The signaling overhead, and for a certain trigger frame, if the station does not receive successfully, the transmission time of the next trigger frame will not be obtained, and the reliability is poor. Therefore, how to let the station know the transmission time of the trigger frame so that the station maintains the receiving state at an appropriate time without increasing the signaling overhead and ensuring the reliability is a problem to be solved by the present invention.
  • the embodiment of the invention provides a method for sending an uplink multi-user transmission trigger frame, an access point and a station, so that the station can know the sending time of the trigger frame without improving the signaling overhead and ensuring the reliability.
  • the receiving state is maintained at the appropriate time.
  • a first aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • the access point sends a beacon frame carrying a trigger frame information unit to the station, where the trigger frame information unit includes sending information of the trigger frame, where the sending information of the trigger frame is used by the station to acquire the touch The transmission period of the frame transmission;
  • the access point contends for a channel
  • the access point sends the trigger frame to the station after the contention is successful, and the target transmission time is any one of the target transmission time series.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a number of sending the trigger frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • Obtaining, by the access point, the target transmission time sequence of the trigger frame according to the sending period of the trigger frame includes:
  • the access point acquires a target transmission time sequence of the trigger frame according to the sending time of the first trigger frame and the sending period of the trigger frame; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate triggering The adjustment range of the transmission time of the frame;
  • Obtaining, by the access point, the target transmission time sequence of the trigger frame according to the sending period of the trigger frame includes:
  • the access point acquires a target transmission time sequence of the trigger frame according to the trigger frame transmission window size and the trigger frame transmission period; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the trigger frame transmission window size.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or The transmission period of the trigger frame that supports the random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame that supports the scheduled transmission, and the second sending period is the supporting random The transmission period of the trigger frame of the contention transmission.
  • a second aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • a beacon frame carrying a trigger frame information unit Receiving, by the station, a beacon frame carrying a trigger frame information unit, where the trigger frame information unit includes sending information of the trigger frame;
  • the station acquires a sending period of the trigger frame according to the sending information of the trigger frame;
  • the station transitions to an active state
  • the station performs uplink transmission according to the indication of the trigger frame.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a sending number of the trigger frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • Obtaining, by the station, the target transmission time sequence of the trigger frame according to the sending period of the trigger frame includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate triggering The adjustment range of the transmission time of the frame;
  • Obtaining, by the station, the target transmission time sequence of the trigger frame according to the sending period of the trigger frame includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the send frame size of the trigger frame.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or a sending period of the trigger frame that supports the random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame that supports the scheduled transmission, and the second sending period is the supporting random The transmission period of the trigger frame of the contention transmission.
  • a third aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • the access point After the contention is successful, the access point sends the trigger frame to the station, where the trigger frame carries indication information, where the indication information is used to indicate that after the uplink condition is completed, the uplink transmission is completed at the station.
  • the access point will send another trigger frame to the site within the set time.
  • the preset condition includes:
  • a fourth aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • the access point Receiving, by the monitoring channel, the triggering frame sent by the access point, where the triggering frame carries the indication information, where the indication information is used to indicate that after the uplink transmission is completed at the station, when the preset condition is met
  • the access point will send another trigger frame to the site within a preset time
  • the station performs uplink transmission according to the indication of the trigger frame
  • the station keeps an active state after completing the uplink transmission according to the indication of the indication information, and receives the another trigger frame by using a monitoring channel.
  • the preset condition includes:
  • a fifth aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • the access point sends a response frame carrying the indication information to the site, where the indication information is used to indicate whether the access point will send a trigger frame to the site within a preset time;
  • the access point sends the trigger frame to the site within the preset time.
  • the uplink transmission requirement information includes: an amount of data, a data type, and a service priority of the uplink transmission of the station.
  • a sixth aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • the station sends a resource allocation request to the access point, where the resource allocation request includes uplink transmission requirement information of the station;
  • the station transitions to an active state, and the trigger frame is received through a listening channel.
  • the uplink transmission requirement information includes: an amount of data, a data type, and a service priority of the uplink transmission of the station.
  • a seventh aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • the access point sends a beacon frame carrying the service identity mapping information to the site, where the service identifier mapping information is used to indicate whether the site has downlink data to be sent;
  • the access point sends a trigger frame to a station that has downlink data to be sent and is in a dormant state
  • the access point receives feedback information from at least one of the stations that have downlink data to be sent and is in a dormant state, where the feedback information is used to indicate that the at least one site is in an active state;
  • the access point If the trigger frame sent by the access point fails to trigger all the stations that have downlink data to be sent and are in the dormant state, the access point is again executed to have downlink data to be sent and is in the The dormant site sends a trigger frame until all stations in the site that have downlink data to be sent and are in a dormant state are triggered.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the indication information is the bitmap
  • sending, at the access point, a message carrying service identifier mapping information to a station Before the frame it also includes:
  • the access point generates the bitmap according to the site that is to be triggered and the site that does not trigger, where each bit in the bitmap corresponds to the site that has downlink data to be sent and is in a dormant state.
  • the indication information is the offset information
  • sending, at the access point, a carrying service identifier mapping information to a station Before the beacon frame it also includes:
  • the access point generates the offset information according to the site that is to be triggered and the site that does not trigger, and the offset information includes a sub-identity and an offset of the starting site.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • the eighth aspect provides a method for transmitting an uplink multi-user transmission trigger frame, where the method includes:
  • a beacon frame that carries the service identifier mapping information, where the service identifier mapping information is used to indicate whether the downlink data is to be sent by the station;
  • the site is converted to an active state
  • the site sends feedback information to the access point, where the feedback information is used to indicate that the site is in an active state.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the conversion of the site to an active state includes:
  • the station determines, according to the bit corresponding to the site in the bitmap, whether the site is triggered; wherein each bit in the bitmap corresponds to the a site in a site that has downlink data to be sent and is in a dormant state, to indicate whether the one site will be triggered;
  • the site transitions to an active state.
  • the offset information includes a sub-identification of the starting site and the offset, if the service identifier mapping information indicates that the station has downlink data to be sent, the site transitioning to an active state includes:
  • the site acquires the sub-identity of the site according to the service identifier mapping information
  • the identification range of the site to be triggered determined by the site according to the sub-identification and offset of the starting site;
  • the site transitions to an active state.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • an access point includes: a transceiver and a processor;
  • the transceiver is configured to send a beacon frame carrying a trigger frame information unit to a station, where the trigger frame information unit includes a transmission information of a trigger frame, where the sending information of the trigger frame is used by the station to acquire the trigger The transmission period of the frame;
  • the processor is configured to acquire a target transmission time sequence of the trigger frame according to a sending period of the trigger frame;
  • the processor is further configured to: when the target transmission time of the trigger frame is reached, compete for a channel;
  • the transceiver is further configured to send the trigger frame to the station after a successful competition, where the target transmission time is any one of the target transmission time series.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a sending number of the trigger frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • the processor is specifically configured to:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate triggering The adjustment range of the transmission time of the frame;
  • the processor is specifically configured to:
  • a target transmission time sequence of the trigger frame Acquiring, according to the trigger frame sending window size and the sending period of the trigger frame, a target transmission time sequence of the trigger frame; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the trigger frame transmission window size.
  • the type of the trigger frame includes: triggering a frame for supporting scheduled transmission or supporting random contention transmission Trigger frame
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or a sending period of the trigger frame that supports the random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame that supports the scheduled transmission, and the second sending period is the supporting random The transmission period of the trigger frame of the contention transmission.
  • a site in a tenth aspect, includes: a transceiver, a processor;
  • the transceiver is configured to receive, from an access point, a beacon frame that carries a trigger frame information unit, where the trigger frame information unit includes transmission information of a trigger frame;
  • the processor is configured to acquire, according to the sending information of the trigger frame, a sending period of the trigger frame;
  • the processor is further configured to acquire a target transmission time sequence of the trigger frame according to a sending period of the trigger frame;
  • the processor is further configured to switch to an active state when the target transmission time of the trigger frame is reached;
  • the transceiver is further configured to receive the trigger frame by using a listening channel, where the target transmission time is any one of the target transmission time series;
  • the transceiver is further configured to perform uplink transmission according to the indication of the trigger frame.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a sending number of the triggering frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • the processor is specifically configured to:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate triggering The adjustment range of the transmission time of the frame;
  • the processor is specifically configured to:
  • a target transmission time sequence of the trigger frame Acquiring, according to the trigger frame sending window size and the sending period of the trigger frame, a target transmission time sequence of the trigger frame; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the send frame size of the trigger frame.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or a sending period of the trigger frame that supports the random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame that supports the scheduled transmission, and the second sending period is the supporting random The transmission period of the trigger frame of the contention transmission.
  • an access point includes: a transceiver, a processor;
  • the processor is configured to compete for a channel
  • the transceiver is further configured to send the trigger frame to the station after the contention is successful, where the trigger frame carries indication information, where the indication information is used to indicate that when the preset condition is met, the uplink transmission is completed at the station.
  • the access point will issue another trigger frame to the site within a preset time period.
  • the preset condition includes:
  • a site includes: a transceiver, a processor;
  • a transceiver configured to receive, by using a monitoring channel, a trigger frame sent by an access point, where the trigger frame carries indication information, where the indication information is used to indicate that after the uplink transmission is completed at the station, when the preset condition is met
  • the access point will send another trigger frame to the site within the set time
  • the transceiver is further configured to perform uplink transmission according to the indication of the trigger frame
  • the processor is configured to maintain an active state after completing the uplink transmission according to the indication of the indication information
  • the transceiver is further configured to receive the another trigger frame by using a listening channel.
  • the preset condition includes:
  • a thirteenth aspect provides an access point, where the access point includes: a transceiver, a processor;
  • the transceiver is configured to receive a resource allocation request sent by a station, where the resource allocation request includes uplink transmission requirement information of the station;
  • the transceiver is further configured to send, to the station, a response frame that carries the indication information, where the indication information is used to indicate whether the access point will send a trigger frame to the site within a preset time;
  • the transceiver is further configured to send the trigger frame to the station within the preset time.
  • the uplink transmission requirement information includes: an amount of data, an acknowledgment, and a service priority of the uplink transmission of the station.
  • a site in a fourteenth aspect, includes: a transceiver, a processor;
  • the transceiver is configured to send a resource allocation request to the access point, where the resource allocation request includes uplink transmission demand information of the station;
  • the transceiver is further configured to receive, from the access point, a response frame that is sent by the station and that carries the indication information, where the indication information is used to indicate whether the access point will be in the preset time
  • the site sends a trigger frame.
  • the processor converts to an active state when the indication information indicates that the access point will send a trigger frame to the station within a preset time
  • the transceiver is further configured to receive the trigger frame by using a listening channel.
  • the uplink transmission requirement information includes: an amount of data, a data type, and a service priority of the uplink transmission of the station.
  • an access point in a fifteenth aspect, includes: a transceiver and a processor;
  • the transceiver is configured to send a beacon frame to the station, where the beacon frame includes service identifier mapping information, where the service identifier mapping information is used to indicate whether the site has downlink data to be sent;
  • the transceiver is further configured to send a trigger frame to a station that has downlink data to be sent and is in a dormant state;
  • the transceiver is further configured to receive feedback information from at least one of the stations that have downlink data to be sent and are in a dormant state, where the feedback information is used to indicate that the at least one site is in an active state;
  • the transceiver is further configured to perform the access point again if the trigger frame sent by the access point fails to trigger all stations in the station that have downlink data to be sent and are in a dormant state.
  • a station that has downlink data to be sent and is in a dormant state sends a trigger frame until all stations in the station that have downlink data to be sent and are in a dormant state are triggered.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the processor is further configured to:
  • the processor is further configured to:
  • the offset information is generated according to the site that is to be triggered and the site that does not trigger, and the offset information includes a sub-identification and an offset of the starting site.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • a site in a sixteenth aspect, includes: a transceiver, a processor;
  • the transceiver is configured to receive, from an access point, a beacon frame that carries service identifier mapping information, where the service identifier mapping information is used to indicate whether the site has downlink data to be sent;
  • the processor is configured to: if the service identity mapping information indicates that the site has downlink data to be sent, the site is converted to an active state;
  • the transceiver is further configured to receive, by using a monitoring channel, a trigger frame sent by the access point;
  • the transceiver is further configured to send feedback information to the access point, where the feedback information is used to indicate that the site is in an active state.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the processor is specifically configured to:
  • each bit in the bitmap corresponds to the downlink data a site in the site to be sent and in a dormant state, used to indicate whether the one site will be triggered;
  • the site If it is determined that the site will be triggered, it will be converted to an active state.
  • the offset information includes a sub-identification of the starting station.
  • the processor is specifically used to:
  • the identification range of the site to be triggered determined according to the sub-identification and offset of the starting site
  • the sub-identification of the site is within the identification range, it is converted to an active state.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • Embodiments of the present invention provide a method, an access point, and a station for transmitting an uplink multi-user transmission trigger frame.
  • the access point sends a beacon frame carrying a trigger frame information unit to the station, where the trigger frame information unit includes a transmission information of the trigger frame, where the transmission information may be a transmission period or a number of transmissions of the trigger frame, and the station receives the signal.
  • the target transmission time sequence of the trigger frame is obtained according to the sending information.
  • the access point contends for the channel, and after the access point succeeds in the competition, the trigger frame is sent to the station.
  • the station is switched to the active state, and the trigger frame is received through the monitoring channel.
  • the station After receiving the trigger frame, the station performs uplink transmission according to the indication of the trigger frame. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead.
  • Let the STA know the transmission time of the trigger frame, so that the station can maintain the receiving state at the right time.
  • the embodiment of the present invention provides another method for transmitting an uplink multi-user transmission trigger frame, an access point, and a station.
  • the access point sends a trigger frame to the station, where the trigger frame carries indication information, and the indication information is used to indicate
  • the access point will send another trigger frame to the station within the preset time after the station completes the uplink transmission, so that other stations that do not perform uplink transmission or sites that do not complete uplink transmission can complete the uplink transmission. .
  • the embodiment of the present invention provides another method for sending an uplink multi-user transmission trigger frame, an access point, and a station.
  • the station Before the access point sends the trigger frame, the station first sends a resource allocation request to the access point, and the resource allocation request is sent.
  • the uplink transmission requirement information of the site is included, and the access point sends a response frame carrying the indication information to the site according to the uplink transmission requirement information, where the access point sends a trigger frame to the site within a preset time.
  • the station transitions to an active state after receiving the response frame, and receives the trigger frame through the listening channel.
  • the embodiment of the present invention further provides another method for transmitting an uplink multi-user transmission trigger frame, an access point, and a station, where the access point sends a beacon frame carrying the service identifier mapping information to the station, to indicate whether the station has a downlink.
  • the data is to be sent. If the service identifier mapping information indicates that the station has downlink data to be sent, the station converts to an active state, and receives the trigger frame sent by the access point through the monitoring channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead.
  • FIG. 1 is a schematic diagram of an application scenario of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart 1 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention
  • FIG. 3 is a second schematic flowchart of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart 3 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart 4 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart 5 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart 6 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 8 is a schematic flowchart diagram of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 9 is a schematic flowchart 8 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 10 is a schematic flowchart nin of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of a beacon frame in a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 12 is a schematic flowchart 10 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 13 is a first schematic flowchart 1 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention
  • FIG. 14 is a schematic flowchart 11 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • 15 is another schematic flowchart 2 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention
  • 16 is a schematic flowchart 12 of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention
  • FIG. 17 is a schematic diagram of TIM information in a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 18 is a schematic flowchart diagram of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention.
  • FIG. 19 is a schematic diagram of a bitmap in a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present invention.
  • FIG. 20 is a schematic flowchart diagram of a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 21 is a schematic diagram of a sub-identity in a method for transmitting an uplink multi-user transmission trigger frame according to an embodiment of the present disclosure
  • FIG. 22 is a schematic structural diagram of an access point according to an embodiment of the present disclosure.
  • FIG. 23 is a schematic structural diagram of a station according to an embodiment of the present disclosure.
  • FIG. 24 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • FIG. 25 is a schematic structural diagram of another station according to an embodiment of the present disclosure.
  • FIG. 26 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • FIG. 27 is a schematic structural diagram of another station according to an embodiment of the present disclosure.
  • FIG. 28 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • FIG. 29 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • FIG. 30 is a schematic structural diagram of another station according to an embodiment of the present disclosure.
  • FIG. 31 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • 32 is a schematic structural diagram of another station according to an embodiment of the present invention.
  • FIG. 33 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • FIG. 34 is a schematic structural diagram of another station according to an embodiment of the present disclosure.
  • FIG. 35 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • FIG. 36 is a schematic structural diagram of another station according to an embodiment of the present disclosure.
  • FIG. 37 is a schematic structural diagram of another access point according to an embodiment of the present disclosure.
  • FIG. 38 is a schematic structural diagram of another station according to an embodiment of the present disclosure.
  • FIG. 39 is a schematic diagram of a group grouping according to an embodiment of the present invention.
  • FIG. 40 is a schematic diagram of beacon frame transmission according to an embodiment of the present invention.
  • the embodiment of the present invention can be applied to a wireless local area network (English: Wireless Local Area Network, WLAN for short), and the WLAN can include multiple basic service sets (English: Basic Service Set, BSS for short), and the network node of the BSS is a site ( English: Station, abbreviation: STA), the site includes access point class sites (English: Access Point, abbreviation: AP) and non-access point class sites (English: None Access Point Station, referred to as: Non-AP STA) .
  • Each BSS may include one AP and a plurality of Non-AP STAs associated with the AP.
  • APs also known as wireless access points or hotspots.
  • the AP is an access point for mobile users to enter the wired network. It is mainly deployed in the home, inside the building, and inside the campus. The typical coverage radius is tens of meters to hundreds of meters. Of course, it can also be deployed outdoors.
  • An AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect the wireless network clients together and then connect the wireless network to the Ethernet.
  • the standard adopted by AP is IEEE (English: Institute of Electrical and Electronics Engineers) 802.11 series.
  • the AP may be a terminal device or a network device with a WiFi (English: Wireless Fidelity) chip.
  • the AP may be a device supporting the 802.11ax system.
  • the AP may be a device supporting multiple WLAN technologies such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.
  • the Non-AP STA may be a wireless communication chip, a wireless sensor, or a wireless communication terminal.
  • STA may be a wireless communication chip, a wireless sensor, or a wireless communication terminal.
  • mobile phones that support WiFi communication
  • tablets that support WiFi communication
  • set-top boxes that support WiFi communication
  • smart TVs that support WiFi communication
  • smart wearable devices that support WiFi communication
  • computers that support WiFi communication.
  • the STA may support the 802.11ax system.
  • the STA supports multiple WLAN systems such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.
  • Figure 1 is a system diagram of a typical WLAN deployment scenario, including an AP and three STAs, and the AP communicates with STA1, STA2, and STA3, respectively.
  • the uplink transmission mode between the AP and the STA includes but is not limited to the OFDMA mode, the MU-MIMO mode, or the mixed transmission mode of OFDMA and MU-MIMO.
  • the method for transmitting an uplink multi-user transmission trigger frame provided by the embodiment of the present invention is described in detail below.
  • An embodiment of the present invention provides a method for transmitting an uplink multi-user transmission trigger frame, which is applied to an AP. As shown in FIG. 2, the method includes:
  • Step 101 The AP sends a beacon frame carrying a trigger frame information unit to the STA, where the trigger frame information unit includes the sending information of the trigger frame, where the sending information of the trigger frame is used by the STA to obtain the sending of the trigger frame. cycle.
  • Step 102 The AP acquires a target transmission time sequence of the trigger frame according to a sending period of the trigger frame.
  • Step 103 When the target transmission time of the trigger frame is reached, the AP competes for a channel.
  • Step 104 The AP sends the trigger frame to the STA after the contention is successful, and the target transmission time is any one of the target transmission time series.
  • the AP sends a beacon frame carrying a trigger frame information unit to the STA, where the trigger frame information unit includes the transmission information of the trigger frame, and the transmission information may be a trigger frame.
  • the sending period or the number of sending the STA obtains the target transmission time sequence of the trigger frame according to the sending information after receiving the beacon frame, and when the target transmission time of the triggering frame is reached, the AP contends for the channel, and after the AP competes successfully, The STA sends a trigger frame. At this time, the STA is switched to the active state, and the trigger frame is received through the listening channel.
  • the STA After receiving the trigger frame, the STA performs uplink transmission according to the indication of the trigger frame. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that it can When the signaling overhead is increased and the reliability is ensured, the STA is informed of the transmission time of the trigger frame, so that the STA maintains the receiving state at an appropriate time.
  • An embodiment of the present invention provides another method for transmitting an uplink multi-user transmission trigger frame, which is applied to an STA. As shown in FIG. 3, the method includes:
  • Step 201 The STA receives, from the AP, a beacon frame that carries a trigger frame information unit, where the trigger frame information unit includes transmission information of the trigger frame.
  • Step 202 The STA acquires a sending period of the trigger frame according to the sending information of the trigger frame.
  • Step 203 The STA acquires a target transmission time sequence of the trigger frame according to a sending period of the trigger frame.
  • Step 204 When the target transmission time of the trigger frame is reached, the STA transitions to an active state.
  • Step 205 The STA receives the trigger frame by using a monitoring channel, where the target transmission time is any one of the target transmission time series.
  • Step 206 The STA performs uplink transmission according to the indication of the trigger frame.
  • the STA receives the beacon frame carrying the trigger frame information unit from the AP, and the trigger frame information unit includes the transmission information of the trigger frame, where the transmission information may be a trigger frame.
  • the sending period or the number of sending the STA obtains the target transmission time sequence of the trigger frame according to the sending information after receiving the beacon frame, and when the target transmission time of the triggering frame is reached, the AP contends for the channel, and after the AP competes successfully,
  • the STA sends a trigger frame.
  • the STA is switched to the active state, and the trigger frame is received through the listening channel.
  • the STA performs uplink transmission according to the indication of the trigger frame.
  • the STA know the transmission time of the trigger frame, so that the STA can maintain the receiving state at the appropriate time.
  • the embodiment of the invention further provides another method for transmitting an uplink multi-user transmission trigger frame, which is applied to AP, as shown in FIG. 4, the method includes:
  • Step 301 The AP contends for the channel.
  • Step 302 After the contention is successful, the AP sends the trigger frame to the STA, where the trigger frame carries indication information, where the indication information is used to indicate that after the STA completes the uplink transmission, when the preset condition is met. The AP will send another trigger frame to the STA within a preset time.
  • the method for transmitting an uplink multi-user transmission trigger frame is provided by the embodiment of the present invention.
  • the AP sends a trigger frame to the STA.
  • the triggering frame carries the indication information, where the indication information is used to indicate that the STA is completed when the preset condition is met.
  • the AP sends another trigger frame to the STA in the preset time after the uplink transmission, so that other STAs that do not perform uplink transmission or STAs that do not complete uplink transmission can complete uplink transmission.
  • the embodiment of the invention further provides a method for transmitting an uplink multi-user transmission trigger frame, which is applied to an STA. As shown in FIG. 5, the method includes:
  • Step 401 The STA receives the trigger frame sent by the AP by using the interception channel, where the trigger frame carries the indication information, where the indication information is used to indicate that the AP will be in the preset time after the STA completes the uplink transmission.
  • the STA sends another trigger frame.
  • Step 402 The STA performs uplink transmission according to the indication of the trigger frame.
  • Step 403 The STA keeps an active state after completing the uplink transmission according to the indication of the indication information, and receives the another trigger frame by using a monitoring channel.
  • the method for transmitting an uplink multi-user transmission trigger frame is provided by the embodiment of the present invention.
  • the AP sends a trigger frame to the STA.
  • the triggering frame carries the indication information, where the indication information is used to indicate that the STA is completed when the preset condition is met.
  • the AP sends another trigger frame to the STA in the preset time after the uplink transmission, so that other STAs that do not perform uplink transmission or STAs that do not complete uplink transmission can complete uplink transmission.
  • the embodiment of the present invention further provides another method for transmitting an uplink multi-user transmission trigger frame, which is applied to an AP. As shown in FIG. 6, the method includes:
  • Step 501 The AP receives a resource allocation request sent by the STA, where the resource allocation request includes The uplink transmission requirement information of the STA.
  • Step 502 The AP sends a response frame carrying the indication information to the STA, where the indication information is used to indicate whether the AP will send a trigger frame to the STA within a preset time.
  • Step 503 The AP sends the trigger frame to the STA within the preset time.
  • the method for transmitting an uplink multi-user transmission trigger frame before the AP sends the trigger frame, the STA first sends a resource allocation request to the AP, where the resource allocation request includes the uplink transmission requirement information of the STA, and the AP according to the uplink.
  • the transmission request information sends a response frame carrying the indication information to the STA, and is used to indicate whether the AP sends a trigger frame to the STA within a preset time, so that the STA converts to an active state after receiving the response frame, and listens to the channel. Receiving the trigger frame.
  • the STA know the transmission time of the trigger frame, so that the STA can maintain the receiving state at the appropriate time.
  • the embodiment of the present invention further provides another method for transmitting an uplink multi-user transmission trigger frame, which is applied to an STA. As shown in FIG. 7, the method includes:
  • Step 601 The STA sends a resource allocation request to the AP, where the resource allocation request includes uplink transmission requirement information of the STA.
  • Step 602 The STA receives, from the AP, a response frame that is sent by the STA and carries the indication information, where the indication information is used to indicate whether the AP will send a trigger frame to the STA within a preset time.
  • Step 603 If the indication information indicates that the AP will send a trigger frame to the STA within a preset time, the STA is converted to an active state, and the trigger frame is received by using a monitoring channel.
  • the method for transmitting an uplink multi-user transmission trigger frame before the AP sends the trigger frame, the STA first sends a resource allocation request to the AP, where the resource allocation request includes the uplink transmission requirement information of the STA, and the AP according to the uplink.
  • the transmission request information sends a response frame carrying the indication information to the STA, and is used to indicate whether the AP sends a trigger frame to the STA within a preset time, so that the STA converts to an active state after receiving the response frame, and listens to the channel.
  • Receiving the trigger frame Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids trigger frame.
  • An embodiment of the present invention provides a method for transmitting an uplink multi-user transmission trigger frame, which is applied to an AP. As shown in FIG. 8, the method includes:
  • Step 701 The AP sends a beacon frame carrying the service identifier mapping information to the STA, where the service identifier mapping information is used to indicate whether the STA has downlink data to be sent.
  • Step 702 The AP sends a trigger frame to an STA that has downlink data to be sent and is in a dormant state.
  • Step 703 The AP receives feedback information from at least one STA of the STA that has downlink data to be sent and is in a dormant state, where the feedback information is used to indicate that the at least one STA is in an active state.
  • Step 704 If the trigger frame sent by the AP fails to trigger all the STAs that have downlink data to be sent and are in the dormant STA, perform the AP to the downlink data to be sent and is in the sleep state.
  • the STA of the state sends a trigger frame until all STAs that have downlink data to be transmitted and are in the sleep state STA are triggered.
  • the AP sends a beacon frame carrying the service identifier mapping information to the STA, where the STA is configured to indicate whether the STA has downlink data to be sent, and if the service identifier mapping information indicates the STA If downlink data is to be sent, the STA transitions to an active state, and receives a trigger frame sent by the AP through the listening channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the STA know the transmission time of the trigger frame, so that the STA can maintain the receiving state at the appropriate time.
  • the embodiment of the invention further provides a method for transmitting an uplink multi-user transmission trigger frame, which is applied to an STA. As shown in FIG. 9, the method includes:
  • Step 801 The STA receives, from the AP, a beacon frame that carries the service identifier mapping information, where the service label The mapping information is used to indicate whether the STA has downlink data to be sent.
  • Step 802 If the service identity mapping information indicates that the STA has downlink data to be sent, the STA is converted to an active state.
  • Step 803 The STA receives a trigger sent by the AP by using a listening channel.
  • Step 804 The STA sends feedback information to the AP, where the feedback information is used to indicate that the STA is in an active state.
  • the AP sends a beacon frame carrying the service identifier mapping information to the STA, where the STA is configured to indicate whether the STA has downlink data to be sent, and if the service identifier mapping information indicates the STA If downlink data is to be sent, the STA transitions to an active state, and receives a trigger frame sent by the AP through the listening channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the STA know the transmission time of the trigger frame, so that the STA can maintain the receiving state at the appropriate time.
  • the uplink multi-user transmission trigger frame provided by the first embodiment and the second embodiment of the present invention is hereinafter described by using specific embodiments.
  • one STA is used as an example, and the STA may be any one of the multiple STAs.
  • the method includes:
  • Step 901 The AP sends a beacon frame carrying a trigger frame information unit to the STA, where the trigger frame information unit includes the sending information of the trigger frame, where the sending information of the trigger frame is used by the STA to acquire the sending period of the trigger frame.
  • the sending information may be a sending period of the trigger frame or a number of sending frames of the trigger frame.
  • a beacon frame is a type of timed broadcast transmission, which is mainly used to notify the presence of a network AP.
  • the beacon frame is also required when the STA and the AP establish an association.
  • an AP such as a router
  • a STA such as a UE
  • the frame is configured to be able to identify the WiFi network corresponding to the AP, and the STA also synchronizes with the acquired beacon frame when accessing the WiFi network.
  • the beacon frame is usually in milliseconds, and the duration of each beacon period is the same. In general, a beacon period defaults to 100 milliseconds.
  • Step 902 The AP acquires a target transmission time sequence of the trigger frame according to a sending period of the trigger frame.
  • t 0 represents the transmission time of the first trigger frame
  • the time may be a default time point, such as the transmission time of the beacon frame.
  • the AP may specify a time as the sending time of the first trigger frame. Therefore, optionally, the trigger frame information unit may further include: a sending time of the first trigger frame. At this time, t 0 is equal to the transmission time of the first trigger frame in the trigger frame information unit.
  • the actual transmission time of the trigger frame may be later than the target transmission in the target transmission time sequence, so that the STA remains active when the trigger frame is sent.
  • the triggering frame information unit may further include: a trigger frame sending window size, where the trigger frame sending window size is used to indicate an adjustment range of the sending time of the trigger frame.
  • the acquiring, by the AP, the target transmission time sequence of the trigger frame according to the sending period of the trigger frame comprises: acquiring the target transmission time sequence of the trigger frame according to the trigger frame sending window size and the sending period of the trigger frame.
  • the target transmission time sequence includes:
  • a 0 , A 1 , ..., A n are determined by the AP.
  • the following fields may be added to the beacon frame: Trigger Frame Interval, or the number of trigger frames (Trigger Frame Number) ).
  • Trigger Frame Number the number of trigger frames
  • it may also include a Trigger Frame Start Time and/or a Trigger Frame Window Size.
  • Step 903 The STA acquires a sending period of the trigger frame according to the sending information of the trigger frame.
  • the sending period of the triggering frame may be obtained by reading the sending information; if the sending information is the number of sending the triggering frame, the sending period of the beacon frame is divided by the triggering frame. The number of transmissions can be obtained by the transmission period of the trigger frame.
  • Step 904 The STA acquires a target transmission time sequence of the trigger frame according to a sending period of the trigger frame.
  • t 0 represents the transmission time of the first trigger frame
  • the time may be a default time point, such as the transmission time of the beacon frame.
  • the triggered frame information unit in the received beacon frame further includes: a sending time of the first trigger frame. At this time, t 0 is equal to the transmission time of the first trigger frame in the trigger frame information unit.
  • the trigger frame information unit in the received beacon frame further includes: a trigger frame sending window size
  • the target transmission time sequence of the STA acquiring the trigger frame according to the sending period of the trigger frame includes:
  • a target transmission time sequence of the trigger frame Acquiring, according to the trigger frame sending window size and the sending period of the trigger frame, a target transmission time sequence of the trigger frame; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the send frame size of the trigger frame.
  • the target transmission time series obtained at this time is a sequence of the earliest time point at which the trigger frame may arrive.
  • Step 905 When the target transmission time of the trigger frame is reached, the AP contends for the channel.
  • the target transmission time is any one of the target transmission time series.
  • the target transmission time series t 0 , t 1 , . . . , t n obtained in step 902 starts from t 0 when any one of t 0 , t 1 , . . . , t n is reached.
  • the AP begins to contend for the channel.
  • step 902 As the target transmission time series t 0 + A 0 , t 1 + A 1 , ..., t n + A n obtained in step 902, starting from t 0 + A 0 , when t 0 + A 0 is reached, At any one of t 1 + A 1 , ..., t n + A n , the AP starts to contend for the channel.
  • Step 906 When the target transmission time of the trigger frame is reached, the STA transitions to an active state.
  • the AP starts to contend for the channel, and the STA transitions to the active state, ready to receive the trigger frame sent after the AP competes successfully.
  • Step 907 The AP sends a trigger frame to the STA after the contention is successful.
  • Step 908 The STA receives the trigger frame by using the monitoring channel.
  • the AP After the AP successfully competes, the AP obtains the right to use the channel, so the STA can receive the trigger frame sent by the AP by listening to the channel.
  • Step 909 The STA performs uplink transmission according to the indication of the trigger frame.
  • the type of the trigger frame may include: a trigger frame that supports scheduled transmission, or a trigger frame that supports random contention transmission.
  • the triggering frame sent by the AP in the embodiment of the present invention may be any one of the foregoing two types. Therefore, the sending period of the triggering frame may be the sending period of the triggering frame that supports the scheduled transmission, or The transmission period of the trigger frame of the contention transmission.
  • the trigger frame sent by the AP in the embodiment of the present invention may include the foregoing two types, that is, the trigger frame sent by the AP is two trigger frames, one is the trigger frame for supporting the scheduled transmission, and the other is the support random.
  • the triggering frame of the triggering transmission, the sending period of the triggering frame may include: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame supporting the scheduled transmission, and the second The transmission period is a transmission period of a trigger frame that supports random contention transmission.
  • the method for obtaining the first sending period and the second sending period are the same, and may be directly sent by the AP through the beacon frame, or may be calculated and obtained by the number of sending frames of the triggering frame sent by the AP, according to the first sending period and the second sending.
  • the method of periodically acquiring the target transmission time series is also the same, and specifically refer to step 902 and step 904.
  • the AP sends a beacon frame carrying a trigger frame information unit to the STA, where the trigger frame information unit includes the transmission information of the trigger frame, and the transmission information may be a trigger frame.
  • the sending period or the number of sending the STA obtains the target transmission time sequence of the trigger frame according to the sending information after receiving the beacon frame, and when the target transmission time of the triggering frame is reached, the AP contends for the channel, and after the AP competes successfully, The STA sends a trigger frame. At this time, the STA is switched to the active state, and the trigger frame is received through the listening channel.
  • the STA After receiving the trigger frame, the STA performs uplink transmission according to the indication of the trigger frame. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the STA know the transmission time of the trigger frame, so that the STA can maintain the receiving state at the appropriate time.
  • the AP usually interacts with multiple STAs at the same time.
  • an STA is used as an example in the following embodiments.
  • the STA may be the multiple STAs. Any one of the STAs, as shown in FIG. 12, includes:
  • Step 1101 The AP sends a beacon frame carrying a trigger frame information unit to the STA, where the trigger frame information unit includes the sending information of the trigger frame, where the sending information of the trigger frame is used by the STA to acquire the sending period of the trigger frame.
  • the sending information may be a sending period of the trigger frame, or may be the number of sending the trigger frame.
  • Step 1102 The AP acquires a target transmission time sequence of the trigger frame according to the transmission period of the trigger frame (the specific steps are the same as the step 902, and may refer to step 902, and details are not described herein again).
  • Step 1103 The STA acquires a sending period of the trigger frame according to the sending information of the trigger frame.
  • step 1104 the STA acquires the target transmission time sequence of the trigger frame according to the transmission period of the trigger frame (the specific steps are the same as the step 904, and may refer to step 904, and details are not described herein again).
  • Step 1105 When the target transmission time of the trigger frame is reached, the AP contends for the channel.
  • the target transmission time is any one of the target transmission time series. (The specific steps are the same as step 904, and may not be described again with reference to step 904).
  • Step 1106 When the target transmission time of the trigger frame is reached, the STA transitions to an active state.
  • the AP starts to contend for the channel, and the STA transitions to the active state, ready to receive the trigger frame sent after the AP competes successfully.
  • Step 1107 The AP sends a trigger frame to the STA after the contention is successful.
  • the indication information is used to indicate that when the preset condition is met, the AP sends another trigger frame to the STA within a preset time after the STA completes the uplink transmission.
  • the preset condition may include:
  • the preset time can be set to a shorter time, that is, it can be understood that when the AP sends the trigger frame carrying the indication information, indicating the STA, when the preset condition is met, the AP immediately goes down. Send another trigger frame.
  • the process may be as shown in FIG. 13.
  • T is a transmission period of the trigger frame
  • t is the preset time
  • the BA refers to the block confirmation, visible.
  • the AP sends a trigger frame again.
  • the STA will immediately receive another AP sent after the completion of the uplink transmission. Trigger frame.
  • Step 1108 The STA receives the trigger frame by using a listening channel.
  • the AP After the AP successfully competes, the AP obtains the right to use the channel, so the STA can receive the trigger frame sent by the AP by listening to the channel.
  • Step 1109 The STA performs uplink transmission according to the indication of the trigger frame.
  • Step 1110 The STA keeps an active state after completing the uplink transmission according to the indication of the indication information, and receives the another trigger frame by using a monitoring channel.
  • the AP after the AP sends a trigger frame to the STA, if the preset condition is met, the AP immediately sends another trigger frame to the STA, which is applicable not only to the foregoing scenario. It can also be applied to other scenarios. For example, it can also be applied to the embodiments described below, that is, it can be understood that the AP can send a STA to the STA regardless of the implementation manner to implement the sending and receiving of the trigger frame. After the frame is triggered, when the above preset condition is met, another trigger frame is immediately sent to the STA.
  • the AP carries the indication information in the trigger frame sent by the STA, where the indication information is used to indicate that after the STA completes the uplink transmission, when the preset condition is met.
  • the AP sends another trigger frame to the STA in a preset time, so that other STAs that do not perform uplink transmission or STAs that do not complete uplink transmission can complete uplink transmission.
  • the AP usually interacts with multiple STAs at the same time.
  • an STA is used as an example in the following embodiments.
  • the STA may be the multiple STAs. Any STA, as shown in Figure 14, The method includes:
  • Step 1301 The STA sends a resource allocation request (English: Resource Allocation Request, RAR for short) to the AP, where the RAR includes uplink transmission requirement information of the STA.
  • a resource allocation request (English: Resource Allocation Request, RAR for short)
  • RAR Resource Allocation Request
  • the uplink transmission requirement information includes: information about the amount of data, data type, and service priority of the uplink transmission of the STA.
  • Step 1302 The AP sends a response frame carrying the indication information to the STA, where the response frame is used to reply to the RAR that the STA has received, and the indication information is used to indicate whether the AP is in advance.
  • a trigger frame is sent to the STA in the set time.
  • Step 1303 If the indication information indicates that the AP will send a trigger frame to the STA within a preset time, the STA transitions to an active state.
  • Step 1304 The AP sends the trigger frame to the STA in the preset time.
  • Step 1305 The STA receives the trigger frame by using a listening channel.
  • the process can be as shown in FIG.
  • the method for transmitting an uplink multi-user transmission trigger frame before the AP sends the trigger frame, the STA first sends a resource allocation request to the AP, where the resource allocation request includes the uplink transmission requirement information of the STA, and the AP according to the uplink.
  • the transmission request information sends a response frame carrying the indication information to the STA, and is used to indicate whether the AP sends a trigger frame to the STA within a preset time, so that the STA converts to an active state after receiving the response frame, and listens to the channel. Receiving the trigger frame.
  • the STA know the transmission time of the trigger frame, so that the STA can maintain the receiving state at the appropriate time.
  • the AP usually interacts with multiple STAs at the same time.
  • an STA is used as an example in the following embodiments.
  • the STA may be the multiple STAs. Any one of the STAs, as shown in Figure 16, includes:
  • Step 1501 The AP sends a beacon frame carrying a Traffic Indication Map (TIM) information to the STA, where the TIM information is used to indicate whether the STA has downlink data to be sent.
  • TIM Traffic Indication Map
  • the TIM information may be as shown in FIG. 17, where the AID is an association identifier, and each bit (bit) in the TIM information is only used to indicate whether the corresponding STA in the dormant state has downlink data to be sent. If the value of the bit is 1, the STA that is in the dormant state corresponding to the bit has downlink data to be sent. If the value of the bit is 0, the STA that is in the dormant state corresponding to the bit has no downlink data to be sent.
  • Step 1502 The AP sends a trigger frame to an STA that has downlink data to be sent and is in a dormant state.
  • Step 1503 The AP receives feedback information from at least one STA of the STA that has downlink data to be sent and is in a dormant state, where the feedback information is used to indicate that the at least one STA is in an active state.
  • the feedback information includes a PS (Power Save)-POLL (Polling) frame, or buffer information, or uplink data.
  • PS Power Save
  • POLL Packet Control
  • Step 1504 The AP determines whether all the STAs that have downlink data to be sent and are in the dormant STA are triggered. If all the STAs are not triggered, step 1502 to step 1504 are performed again. All STAs that have downlink data to be transmitted and are in the dormant STA are triggered.
  • the beacon frame in addition to the TIM information, includes indication information, which may be a Trigger Indication Map, or offset information.
  • the method for transmitting the uplink multi-user transmission trigger frame includes:
  • Step 1701 The AP determines an STA that triggers the STA that has downlink data to be sent and is in a dormant state, and an STA that does not trigger.
  • Step 1702 The AP generates the bitmap according to the STA that will trigger and the STA that does not trigger.
  • the bitmap may be as shown in FIG. 19, and each bit in the bitmap indicates the STA corresponding to the bit with the bit 1 in the TIM information, if a certain bit in the bitmap is 1, The STA corresponding to the bit is triggered by the AP. If a bit in the bitmap is 0, the STA corresponding to the bit is not triggered by the AP.
  • Step 1703 The AP sends a beacon frame carrying the TIM information and the bitmap to the STA.
  • Step 1704 The STA determines, according to the TIM information, whether the STA has downlink data to be sent. If there is downlink data to be sent, step 1705 is performed, otherwise it ends.
  • Step 1705 The STA determines, according to the bit corresponding to the STA in the bitmap, whether the STA is triggered. If it is determined that the STA will be triggered, then step 1706 is performed, otherwise it ends.
  • Step 1706 The STA is converted to an active state.
  • Step 1707 The AP sends a trigger frame to the STA that is to be sent by the AP to the STA that has downlink data to be sent and is in a dormant state.
  • Step 1708 The STA receives a trigger frame sent by the AP by using a listening channel.
  • Step 1709 The STA sends feedback information to the AP.
  • the feedback information includes PS-POLL frames, or buffer information, or uplink data.
  • it may also include:
  • the method for transmitting the uplink multi-user transmission trigger frame includes:
  • Step 1901 The AP determines the STA that triggers the STA that has downlink data to be sent and is in a dormant state, and the STA that does not trigger.
  • Step 1902 The AP generates the offset information according to the STA that will trigger and the STA that does not trigger, where the offset information includes a sub-ID (Sub ID) and an offset of the starting STA. Offset).
  • the offset information includes a sub-ID (Sub ID) and an offset of the starting STA. Offset).
  • the offset information may be as shown in FIG. 21, and the sub-identity of the STA may be determined according to the value of the corresponding bit in the TIM, as shown in FIG. 21, starting from the first bit in the TIM. , in turn, each bit value of 1 can get downlink data to be sent and is in The sub-ID of the STA in the dormant state.
  • the STA to be triggered can be determined based on the sub-identification and offset of the starting STA.
  • Step 1903 The AP sends a beacon frame carrying the TIM information and the offset information to the STA.
  • Step 1904 The STA determines, according to the TIM information, whether the STA has downlink data to be sent. If there is downlink data to be sent, step 1905 is performed, otherwise it ends.
  • Step 1905 The STA determines, according to the offset information, whether the STA is triggered. If it is determined whether the STA will be triggered, then step 1906 is performed, otherwise it ends.
  • the STA can be determined whether the STA falls within the range of [Sub ID, Sub ID+Offset], and it can be determined whether the STA will be triggered.
  • the sub-identity of the STA is 3, the sub-identity of the starting STA is 1, and the offset is 0, then 3 falls within the range of [1, 1+8], so it can be determined that the STA will be AP. trigger.
  • Step 1906 the STA is converted to an active state.
  • Step 1907 The AP sends a trigger frame to the STA that has downlink data to be sent and is in a dormant state, and the STA that is triggered by the AP is sent by the offset information.
  • Step 1908 The STA receives a trigger frame sent by the AP by using a listening channel.
  • Step 1909 The STA sends feedback information to the AP.
  • the feedback information includes PS-POLL frames, or buffer information, or uplink data.
  • it may also include:
  • step 1907 Determining, by the AP, that the offset information indicates that all STAs in the STA that are triggered by the AP are triggered. If not all are triggered, step 1907 is performed again until the offset information indication is All STAs in the STA triggered by the AP are triggered (not shown in the figure).
  • the AP sends a beacon frame carrying the service identifier mapping information to the STA, where the STA is configured to indicate whether the STA has downlink data to be sent, and if the service identifier mapping information indicates the STA If downlink data is to be sent, the STA transitions to an active state, and receives a trigger frame sent by the AP through the listening channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the STA know the transmission time of the trigger frame, so that the STA can maintain the receiving state at the appropriate time.
  • An embodiment of the present invention provides an access point 01. As shown in FIG. 22, the access point 01 includes:
  • the sending unit 011 is configured to send, to the station, a beacon frame that carries a trigger frame information unit, where the trigger frame information unit includes sending information of a trigger frame, where the sending information of the trigger frame is used by the station to acquire the trigger frame. Transmission period;
  • the processing unit 012 is configured to acquire a target transmission time sequence of the trigger frame according to a sending period of the trigger frame.
  • the processing unit 012 is further configured to: when the target transmission time of the trigger frame is reached, contend for a channel;
  • the sending unit 011 is further configured to send the trigger frame to the station after the contention is successful, where the target transmission time is any one of the target transmission time series.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a number of sending the trigger frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • the processing unit 012 is specifically configured to:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate an adjustment range of the sending time of the trigger frame;
  • the processing unit 012 is specifically configured to:
  • a target transmission time sequence of the trigger frame Acquiring, according to the trigger frame sending window size and the sending period of the trigger frame, a target transmission time sequence of the trigger frame; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the trigger frame transmission window size.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or The transmission period of the trigger frame that supports the random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame that supports the scheduled transmission, and the second sending period is the supporting random The transmission period of the trigger frame of the contention transmission.
  • An embodiment of the present invention provides an access point, where the access point sends a beacon frame carrying a trigger frame information unit to the station, where the trigger frame information unit includes a trigger frame transmission information, where the transmission information may be a trigger frame transmission period. Or sending the number, the station obtains the target transmission time sequence of the trigger frame according to the sending information after receiving the beacon frame, and when the target transmission time of the trigger frame is reached, the access point contends for the channel, and after the competition is successful after the access point is successful
  • the trigger frame is sent to the station. At this time, the station is switched to the active state, and the trigger frame is received through the monitoring channel. After receiving the trigger frame, the station performs uplink transmission according to the indication of the trigger frame.
  • the embodiment of the present invention provides a site 02. As shown in FIG. 23, the site 02 includes:
  • the receiving unit 021 is configured to receive, from the access point, a beacon frame that carries a trigger frame information unit, where the trigger frame information unit includes sending information of the trigger frame.
  • the processing unit 022 is configured to acquire, according to the sending information of the trigger frame, a sending period of the trigger frame.
  • the processing unit 022 is further configured to acquire a target transmission time sequence of the trigger frame according to a sending period of the trigger frame.
  • the processing unit 022 is further configured to switch to an active state when the target transmission time of the trigger frame is reached;
  • the receiving unit 021 is further configured to receive the trigger frame by using a listening channel, where the target transmission time is any one of the target transmission time series;
  • the sending unit 023 is configured to perform uplink transmission according to the indication of the trigger frame.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a number of sending the trigger frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • the processing unit 022 is specifically configured to:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate an adjustment range of the sending time of the trigger frame;
  • the processing unit 022 is specifically configured to:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the send frame size of the trigger frame.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or a sending period of the trigger frame that supports the random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame that supports the scheduled transmission, and the second sending period is the supporting random The transmission period of the trigger frame of the contention transmission.
  • the embodiment of the present invention provides a station, where a station receives a beacon frame carrying a trigger frame information unit from an access point, and the trigger frame information unit includes a trigger frame sending information, where the sending information may be a trigger frame sending period or sending.
  • the number of the target transmission time sequence of the trigger frame is obtained according to the transmission information after receiving the beacon frame.
  • the access point contends for the channel, and after the competition succeeds, the access point to the site Send a trigger frame, at which point the site transitions to an active state.
  • the trigger frame is received through the monitoring channel, and after receiving the trigger frame, the station performs uplink transmission according to the indication of the trigger frame.
  • An embodiment of the present invention provides an access point 03. As shown in FIG. 24, the access point 03 includes:
  • Processing unit 031 configured to compete for a channel
  • the sending unit 032 is configured to send a trigger frame to the station after the contention is successful, where the trigger frame carries indication information, where the indication information is used to indicate that after the preset condition is met, the preset after the uplink transmission is completed at the station
  • the access point will send another trigger frame to the site within the time.
  • the preset conditions include:
  • the embodiment of the present invention provides an access point, where the access point carries the indication information in the trigger frame sent to the site, where the indication information is used to indicate the preset time after the uplink transmission is completed at the site when the preset condition is met.
  • the access point will send another trigger frame to the station, so that other stations that do not perform uplink transmission or stations that do not complete uplink transmission can complete uplink transmission.
  • An embodiment of the present invention provides a site 04. As shown in FIG. 25, the site 04 includes:
  • the receiving unit 041 is further configured to receive, by using a monitoring channel, a trigger frame sent by the access point, where the triggering frame carries indication information, where the indication information is used to indicate that after the uplink transmission is completed at the station, when the preset condition is met
  • the access point will send another trigger frame to the site within a preset time;
  • the sending unit 042 is configured to perform uplink transmission according to the indication of the trigger frame.
  • the processing unit 043 is configured to maintain an active state after completing the uplink transmission according to the indication of the indication information
  • the receiving unit 041 is further configured to receive the another trigger frame by using a listening channel.
  • the preset conditions include:
  • the embodiment of the present invention provides a site, where the access point carries the indication information in the trigger frame sent to the site, where the indication information is used to indicate that the preset time after the uplink transmission is completed when the site meets the preset condition
  • the access point will send another trigger frame to the station, so that other stations that do not perform uplink transmission or stations that do not complete uplink transmission can complete uplink transmission.
  • An embodiment of the present invention provides an access point 05. As shown in FIG. 26, the access point 05 includes:
  • the receiving unit 051 is configured to receive a resource allocation request sent by the station, where the resource allocation request includes uplink transmission requirement information of the station;
  • the sending unit 052 is configured to send, to the station, a response frame that carries the indication information, where the indication information is used to indicate whether the access point will send a trigger frame to the site within a preset time;
  • the sending unit 052 is further configured to send the trigger frame to the station within the preset time.
  • the uplink transmission requirement information includes: an amount of data, an data type, and a service priority of the uplink transmission of the station.
  • An embodiment of the present invention provides an access point, where a site first sends a resource allocation request to an access point, where the sending resource allocation request includes uplink transmission demand information of the site, and the access point is configured according to the access point.
  • the uplink transmission requirement information sends a response frame carrying the indication information to the station, and is used to indicate whether the access point sends a trigger frame to the site within a preset time, so that the site converts to an active state after receiving the response frame.
  • the trigger frame is received through a listening channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the site know when the trigger frame is sent, so that the station remains in the receiving state at the right time.
  • the embodiment of the present invention provides a site 06. As shown in FIG. 27, the site 06 includes:
  • the sending unit 061 is configured to send a resource allocation request to the access point, where the resource allocation request includes uplink transmission demand information of the station;
  • the receiving unit 062 is configured to receive, from the access point, a response frame that is sent by the station and that carries the indication information, where the indication information is used to indicate whether the access point will be sent to the site within a preset time. Send a trigger frame;
  • the processing unit 063 converts to an active state when the indication information indicates that the access point will send a trigger frame to the station within a preset time;
  • the receiving unit 062 is further configured to receive the trigger frame by using a listening channel.
  • the uplink transmission requirement information includes: an amount of data, an data type, and a service priority of the uplink transmission of the station.
  • the embodiment of the present invention provides a station, before the access point sends the trigger frame, the station first sends a resource allocation request to the access point, where the resource allocation request includes the uplink transmission demand information of the station, and the access point is transmitted according to the uplink.
  • the request information sends a response frame carrying the indication information to the site, and is used to indicate whether the access point sends a trigger frame to the site within a preset time, so that the site is converted into an active state after receiving the response frame, and the device is monitored.
  • the channel receives the trigger frame. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the site know when the trigger frame is sent, so that the station remains in the receiving state at the right time.
  • An embodiment of the present invention further provides an access point 07.
  • the access point 07 includes:
  • the sending unit 071 is configured to send a beacon frame to the station, where the beacon frame includes service identifier mapping information, where the service identifier mapping information is used to indicate whether the site has downlink data to be sent.
  • the sending unit 071 is further configured to send a trigger frame to a station that has downlink data to be sent and is in a dormant state;
  • the receiving unit 072 is configured to receive feedback information from at least one of the stations that have downlink data to be sent and are in a dormant state, where the feedback information is used to indicate that the at least one site is in an active state;
  • the sending unit 071 is further configured to: if the trigger frame sent by the access point fails to trigger If all the sites that are in the dormant state of the downlink data are to be sent, the access point is sent to the site that has the downlink data to be sent and is in the dormant state, until the downlink data is to be sent. All sites in the dormant site are triggered.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the access point further includes: a processing unit 073, where the processing unit 073 is configured to:
  • the access point Before transmitting the beacon frame to the station, the access point determines a site that triggers in the site that has downlink data to be sent and is in a dormant state, and a site that does not trigger;
  • the processing unit 073 is configured to:
  • the access point Before transmitting the beacon frame to the station, the access point determines a site that triggers in the site that has downlink data to be sent and is in a dormant state, and a site that does not trigger;
  • the offset information is generated according to the site that is to be triggered and the site that does not trigger, and the offset information includes a sub-identification and an offset of the starting site.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • An embodiment of the present invention provides an access point, where an access point sends a beacon frame carrying service identity mapping information to a site, where it is used to indicate whether the site has downlink data to be sent, and if the service identity mapping information indicates that the site has downlink data.
  • the station transitions to an active state, and receives a trigger frame sent by the access point through a listening channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead.
  • the embodiment of the present invention provides a site 08.
  • the site 08 includes:
  • the receiving unit 081 is configured to receive, from the access point, a beacon frame that carries the service identifier mapping information, where The service identifier mapping information is used to indicate whether the site has downlink data to be sent;
  • the processing unit 082 is further configured to: if the service identity mapping information indicates that the site has downlink data to be sent, the site is converted to an active state;
  • the receiving unit 081 is further configured to receive, by using a listening channel, a trigger frame sent by the access point;
  • the sending unit 083 is configured to send feedback information to the access point, where the feedback information is used to indicate that the site is in an active state.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the processing unit 082 is specifically configured to:
  • each bit in the bitmap corresponds to the downlink data a site in the site to be sent and in a dormant state, used to indicate whether the one site will be triggered;
  • the site If it is determined that the site will be triggered, it will be converted to an active state.
  • the processing unit 082 is specifically configured to:
  • the identification range of the site to be triggered determined according to the sub-identification and offset of the starting site
  • the sub-identification of the site is within the identification range, it is converted to an active state.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • the embodiment of the present invention provides a station, where the access point sends a beacon frame carrying the service identity mapping information to the site, to indicate whether the site has downlink data to be sent, and if the service identity mapping information indicates that the site has downlink data to be sent.
  • the station is converted to an active state, and receives a trigger frame sent by the access point through a listening channel. It can be seen that there is no need to carry information in the trigger frame, which saves
  • the signaling overhead also avoids the impact on the next trigger frame when the trigger frame fails, so that the station can know the sending time of the trigger frame without increasing the signaling overhead and ensuring the reliability, so that the station can be at the appropriate time. Keep receiving status.
  • the embodiment of the present invention provides an access point 09, as shown in FIG. 31, the access point 09 includes: a transceiver 091 and a processor 092;
  • the transceiver 091 is configured to send, to the station, a beacon frame that carries a trigger frame information unit, where the trigger frame information unit includes sending information of a trigger frame, where the sending information of the trigger frame is used by the station to obtain the The transmission period of the trigger frame;
  • the processor 092 is configured to acquire a target transmission time sequence of the trigger frame according to a sending period of the trigger frame.
  • the processor 092 is further configured to contend for a channel when the target transmission time of the trigger frame is reached;
  • the transceiver 091 is further configured to send the trigger frame to the station after a contention success, where the target transmission time is any one of the target transmission time series.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a number of sending the trigger frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • the processor 092 is specifically configured to:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate an adjustment range of the sending time of the trigger frame;
  • the processor 092 is specifically configured to:
  • a target transmission time sequence of the trigger frame Acquiring, according to the trigger frame sending window size and the sending period of the trigger frame, a target transmission time sequence of the trigger frame; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the trigger frame transmission window size.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or a sending period of the trigger frame that supports random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame that supports scheduling transmission, and the second sending period is a random voting transmission The transmission period of the trigger frame.
  • An embodiment of the present invention provides an access point, where the access point sends a beacon frame carrying a trigger frame information unit to the station, where the trigger frame information unit includes a trigger frame transmission information, where the transmission information may be a trigger frame transmission period. Or sending the number, the station obtains the target transmission time sequence of the trigger frame according to the sending information after receiving the beacon frame, and when the target transmission time of the trigger frame is reached, the access point contends for the channel, and after the competition is successful after the access point is successful
  • the trigger frame is sent to the station. At this time, the station is switched to the active state, and the trigger frame is received through the monitoring channel. After receiving the trigger frame, the station performs uplink transmission according to the indication of the trigger frame.
  • the embodiment of the present invention provides a station 10, as shown in FIG. 32, the station 10 includes: a transceiver 1001, a processor 1002;
  • the transceiver 1001 is configured to receive, from an access point, a beacon frame that carries a trigger frame information unit, where the trigger frame information unit includes transmission information of a trigger frame.
  • the processor 1002 is configured to acquire, according to the sending information of the trigger frame, a sending period of the trigger frame.
  • the processor 1002 is further configured to acquire the trigger frame according to a sending period of the trigger frame.
  • Target transmission time series Target transmission time series
  • the processor 1002 is further configured to: when the target transmission time of the trigger frame is reached, transition to an active state;
  • the transceiver 1001 is further configured to receive the trigger frame by using a monitoring channel, where the target transmission time is any one of the target transmission time series;
  • the transceiver 1001 is further configured to perform uplink transmission according to the indication of the trigger frame.
  • the sending information of the trigger frame is a sending period of the trigger frame, or a number of sending the trigger frame.
  • the trigger frame information unit further includes: a sending time of the first trigger frame
  • the processor 1002 is specifically configured to:
  • T is equal to the transmission period of the trigger frame
  • t 0 is equal to the transmission time of the first trigger frame
  • the trigger frame information unit further includes: a trigger frame sending window size, where the trigger frame sending window size is used to indicate an adjustment range of the sending time of the trigger frame;
  • the processor 1002 is specifically configured to:
  • a target transmission time sequence of the trigger frame Acquiring, according to the trigger frame sending window size and the sending period of the trigger frame, a target transmission time sequence of the trigger frame; wherein the target transmission time sequence includes:
  • T is equal to the transmission period of the trigger frame
  • t 0 , t 1 , ..., t n a periodic sequence of period T
  • U is the send frame size of the trigger frame.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame is a sending period of the trigger frame that supports the scheduled transmission, or a sending period of the trigger frame that supports random contention transmission.
  • the type of the trigger frame includes: a trigger frame that supports scheduling transmission or a trigger frame that supports random contention transmission;
  • the sending period of the trigger frame includes: a first sending period and a second sending period, where the first sending period is a sending period of the trigger frame supporting the scheduled transmission, and the second sending period The transmission period of the trigger frame to support random contention transmission.
  • the embodiment of the present invention provides a station, where a station receives a beacon frame carrying a trigger frame information unit from an access point, and the trigger frame information unit includes a trigger frame sending information, where the sending information may be a trigger frame sending period or sending.
  • the number of the target transmission time sequence of the trigger frame is obtained according to the transmission information after receiving the beacon frame.
  • the access point contends for the channel, and after the competition succeeds, the access point to the site
  • the trigger frame is sent.
  • the station is switched to the active state, and the trigger frame is received through the monitoring channel.
  • the station After receiving the trigger frame, the station performs uplink transmission according to the indication of the trigger frame.
  • An embodiment of the present invention provides an access point 11, as shown in Figure 33, the access point 11 includes: a transceiver 1101, a processor 1102;
  • the processor 1102 is configured to compete for a channel
  • the transceiver 1101 is configured to send a trigger frame to the station after the contention is successful, where the trigger frame carries indication information, where the indication information is used to indicate that after the uplink transmission is completed at the station when the preset condition is met
  • the access point will send another trigger frame to the site within a preset time.
  • the preset conditions include:
  • the embodiment of the present invention provides an access point, where the access point carries the indication information in the trigger frame sent to the site, where the indication information is used to indicate that the preset after the uplink transmission is completed at the site when the preset condition is met
  • the access point will send another trigger frame to the site, so that other stations that do not perform uplink transmission or sites that do not complete uplink transmission can complete uplink transmission.
  • the embodiment of the present invention provides a station 12, as shown in FIG. 34, the station 12 includes: a transceiver 1201. The processor 1202;
  • the transceiver 1201 is configured to receive, by using a monitoring channel, a trigger frame sent by an access point, where the trigger frame carries indication information, where the indication information is used to indicate that uplink transmission is completed at the station when a preset condition is met. After the preset time, the access point will send another trigger frame to the site;
  • the transceiver 1201 is further configured to perform uplink transmission according to the indication of the trigger frame.
  • the processor 1202 is further configured to maintain an active state after completing the uplink transmission according to the indication of the indication information;
  • the transceiver 1201 is further configured to receive the another trigger frame by using a listening channel.
  • the preset conditions include:
  • the embodiment of the present invention provides a station, where the access point carries the indication information in the trigger frame sent to the station, where the indication information is used to indicate that the preset time after the station completes the uplink transmission when the preset condition is met
  • the access point will send another trigger frame to the station, so that other stations that do not perform uplink transmission or stations that do not complete uplink transmission can complete uplink transmission.
  • An embodiment of the present invention provides an access point 13, as shown in FIG. 35, the access point 13 includes: a transceiver 1301, a processor 1302;
  • the transceiver 1301 is configured to receive a resource allocation request sent by a station, where the resource allocation request includes uplink transmission requirement information of the station;
  • the transceiver 1301 is further configured to send, to the station, a response frame that carries the indication information, where the indication information is used to indicate whether the access point will send a trigger frame to the station within a preset time;
  • the transceiver 1301 is further configured to send the trigger frame to the station within the preset time.
  • the uplink transmission requirement information includes: an amount of data, an data type, and a service priority of the uplink transmission of the station.
  • the embodiment of the invention provides an access point, before the access point sends the trigger frame, the site first
  • the access point sends a resource allocation request, where the sending resource allocation request includes the uplink transmission requirement information of the station, and the access point sends a response frame carrying the indication information to the station according to the uplink transmission requirement information, where the access point indicates whether the access point will
  • a trigger frame is sent to the station within a preset time, so that the station converts to an active state after receiving the response frame, and receives the trigger frame through the monitoring channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead.
  • Let the site know when the trigger frame is sent, so that the station remains in the receiving state at the right time.
  • the embodiment of the present invention provides a station 14, as shown in FIG. 36, the station 14 includes: a transceiver 1401, a processor 1402;
  • the transceiver 1401 is configured to send a resource allocation request to the access point, where the resource allocation request includes uplink transmission requirement information of the station;
  • the transceiver 1401 is further configured to receive, from the access point, a response frame that is sent by the station and that carries the indication information, where the indication information is used to indicate whether the access point will be located within a preset time.
  • the site sends a trigger frame;
  • the processor 1402 converts to an active state when the indication information indicates that the access point will send a trigger frame to the station within a preset time;
  • the transceiver 1401 is further configured to receive the trigger frame by using a listening channel.
  • the uplink transmission requirement information includes: an amount of data, an data type, and a service priority of the uplink transmission of the station.
  • the embodiment of the present invention provides a station, before the access point sends the trigger frame, the station first sends a resource allocation request to the access point, where the resource allocation request includes the uplink transmission demand information of the station, and the access point is transmitted according to the uplink.
  • the request information sends a response frame carrying the indication information to the site, and is used to indicate whether the access point sends a trigger frame to the site within a preset time, so that the site is converted into an active state after receiving the response frame, and the device is monitored.
  • the channel receives the trigger frame. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the site know when the trigger frame is sent, so that the station remains in the receiving state at the right time.
  • the embodiment of the present invention further provides an access point 15, as shown in FIG. 37, the access point 15 includes: a transceiver 1501 and a processor 1502;
  • the transceiver 1501 is configured to send a beacon frame to the station, where the beacon frame includes service identifier mapping information, where the service identifier mapping information is used to indicate whether the site has downlink data to be sent.
  • the transceiver 1501 is further configured to send a trigger frame to a station that has downlink data to be sent and is in a dormant state;
  • the transceiver 1501 is further configured to receive feedback information from at least one of the stations that have downlink data to be sent and are in a dormant state, where the feedback information is used to indicate that the at least one site is active. ;
  • the transceiver 1501 is further configured to: if the trigger frame sent by the access point fails to trigger all stations in the site that have downlink data to be sent and are in a dormant state, perform the access point again.
  • a trigger frame is sent to a station that has downlink data to be sent and is in a dormant state until all stations in the site that have downlink data to be sent and are in a dormant state are triggered.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the processor 1502 is further configured to:
  • the processor 1502 is further configured to:
  • the offset information is generated according to the site that is to be triggered and the site that does not trigger, and the offset information includes a sub-identification and an offset of the starting site.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • An embodiment of the present invention provides an access point, where an access point sends a mapping information carrying a service identifier to a station.
  • the beacon frame of the information is used to indicate whether the station has downlink data to be sent. If the service identifier mapping information indicates that the station has downlink data to be sent, the station is switched to an active state, and the access point is sent through the monitoring channel. Trigger frame. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the site know when the trigger frame is sent, so that the station remains in the receiving state at the right time.
  • the embodiment of the present invention provides a station 16, as shown in FIG. 38, the station 16 includes: a transceiver 1601, a processor 1602;
  • the transceiver 1601 is configured to receive, from the access point, a beacon frame that carries the service identifier mapping information, where the service identifier mapping information is used to indicate whether the downlink data is to be sent by the station.
  • the processor 1602 is configured to: if the service identity mapping information indicates that the site has downlink data to be sent, the site is converted to an active state;
  • the transceiver 1601 is further configured to receive, by using a listening channel, a trigger frame sent by the access point;
  • the transceiver 1601 is further configured to send feedback information to the access point, where the feedback information is used to indicate that the site is in an active state.
  • the beacon frame further includes indication information, where the indication information includes a bitmap, or offset information.
  • the processor 1602 is specifically configured to:
  • each bit in the bitmap corresponds to the downlink data a site in the site to be sent and in a dormant state, used to indicate whether the one site will be triggered;
  • the site If it is determined that the site will be triggered, it will be converted to an active state.
  • the processor 1602 is specifically configured to:
  • the identification range of the site to be triggered determined according to the sub-identification and offset of the starting site
  • the sub-identification of the site is within the identification range, it is converted to an active state.
  • the feedback information includes a PS-POLL frame, or buffer information, or uplink data.
  • the embodiment of the present invention provides a station, where the access point sends a beacon frame carrying the service identity mapping information to the site, to indicate whether the site has downlink data to be sent, and if the service identity mapping information indicates that the site has downlink data to be sent.
  • the station is converted to an active state, and receives a trigger frame sent by the access point through a listening channel. Therefore, it is not necessary to carry information in the trigger frame, which saves signaling overhead and avoids the impact on the next trigger frame when the trigger frame fails, so that the signaling overhead and reliability can be improved without improving signaling overhead. Let the site know when the trigger frame is sent, so that the station remains in the receiving state at the right time.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above integrated unit implemented in the form of a software functional unit can be stored in a calculation
  • the machine can be read from the storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
  • the AP sends a beacon frame carrying a trigger frame information unit to the STA, where the trigger frame information unit includes the transmission information of the trigger frame, and the sending information of the trigger frame is used by the STA to acquire the transmission period of the trigger frame.
  • the sending information may be a sending period of the trigger frame or a number of sending frames of the trigger frame.
  • the transmission period of the trigger frame can be obtained by dividing the transmission period of the beacon frame by the number of transmissions of the trigger frame.
  • the AP may calculate the transmission period of the trigger frame by using the number of transmissions of the trigger frame according to other calculation rules.
  • the calculation rules include, but are not limited to, the following methods.
  • the transmission period of the trigger frame can be obtained by subtracting the transmission time of the first trigger frame by the beacon frame interval, and dividing by the number of transmissions of the trigger frame.
  • the specific calculation formula is as follows:
  • the triggerInterval is the transmission period of the trigger frame
  • the beaconInterval is the transmission period of the beacon frame
  • the firstTriggerTime is the transmission time of the first trigger frame relative to the previous beacon frame
  • the triggerNum is the number of transmissions of the trigger frame.
  • the sending cycle If the trigger frame transmission period calculated by the above formula is not an integer multiple of the TU, the rounding operation may be performed as a trigger frame. The sending cycle.
  • the beacon interframe space can be divided into two phases, a contention transmission phase and a scheduling transmission phase.
  • the durations of the two phases are contentionPhaseTime and schedulingPhaseTime, respectively, and the sum of the two is a beacon frame interval.
  • the transmission period may be obtained by subtracting the transmission time of the first trigger frame from the duration of the contention phase, and dividing by the number of transmissions of the trigger frame.
  • the triggerInterval_R is the transmission period of the trigger frame that supports the contention
  • the contentionPhaseTime is the duration of the competition transmission phase
  • the firstTriggerTime is the transmission time of the first trigger frame supporting the competition relative to the previous beacon frame
  • the triggerNum is the number of the trigger frames that support the competition.
  • the transmission period may be obtained by subtracting the transmission time of the first trigger frame from the duration of the scheduling transmission phase, and dividing by the number of transmissions of the trigger frame.
  • the triggerInterval_S is the transmission period of the trigger frame that supports the scheduled transmission
  • the schedulingPhaseTime is the duration of the scheduled transmission phase
  • the firstTriggerTime is the transmission time of the first trigger frame that supports the scheduled transmission relative to the start of the scheduled transmission phase
  • the triggerNum is the transmission of the trigger frame that supports the scheduled transmission. number.
  • the sending cycle If the trigger frame transmission period calculated by the above formula is not an integer multiple of the TU, the rounding operation may be performed as a trigger frame. The sending cycle.
  • the sending time of the first trigger frame mentioned in this embodiment may be an absolute time or a relative time, where the absolute time refers to a time referenced by the system time saved by the node itself, and the relative time is Refers to a period of time starting from the transmission start time or the transmission end time of the beacon frame.
  • relative time can be employed.
  • the AP can carry the indication information in the trigger frame, indicating that the AP will immediately send another trigger frame when the specific preset condition is met. It has been mentioned in step 1110 that the STA remains active after completing the uplink transmission according to the indication of the indication information, and receives the other trigger frame through the listening channel.
  • the indication information may be public indication information for all STAs, or may be private indication information for each STA triggered in the trigger frame.
  • the indication information indicates that the AP will send another trigger frame, and the other trigger frame may trigger all STAs; for the latter, the indication information for each STA indicates that the AP will send another trigger frame.
  • the other trigger frame will trigger the STA to transmit.
  • the indication information is common indication information for all STAs, the implementation flow of the AP and the STA is the same as that of the foregoing embodiment 10.
  • the specific implementation process modifies the original step 1107 in the embodiment 10 to the following steps:
  • Step 1107 The AP sends a trigger frame to the STA after the contention is successful.
  • the trigger frame includes indication information, where the indication information is a bitmap field, where the bitmap field is generated according to the STA triggered by the trigger frame, and one of each STA corresponding bitmap field The bit, each bit being 1 indicates that the AP will send another trigger frame to the STA within a preset time after the STA completes the uplink transmission when the preset condition is met.
  • the indication information is used to indicate that when the preset condition is met, the AP sends another trigger frame to the STA within a preset time after the STA completes the uplink transmission.
  • the preset condition may include:
  • the STA After the STA completes the uplink transmission, the STA still has other data to be transmitted.
  • the preset time can be set to a shorter time, that is, the AP immediately sends another trigger frame when the AP sends the triggering frame to carry the indication information, indicating that the STA meets the foregoing preset condition. .
  • the process may be as shown in FIG. 13.
  • T is a transmission period of the trigger frame
  • t is the preset time
  • the BA refers to the block confirmation, visible.
  • the AP sends a trigger frame again.
  • the STA will immediately receive another AP sent after the completion of the uplink transmission. Trigger frame.
  • the AP can trigger the STA according to the indication of the service identity mapping.
  • the STA can be triggered in the following manner.
  • Step 1 The AP sends a beacon frame carrying the service identifier mapping information to the STA, where the service identifier mapping information is used to indicate whether the STA has downlink data to be sent.
  • Step 2 The AP groups the service identifier mapping information in step 1 according to the group information, and each group of service identifier mapping information corresponds to one group identifier. Therefore, each group of STAs mapped by each group of service identifier mapping information also corresponds to one group.
  • logo The packet information may be generated by the AP and sent to the STA, or may be specified by a standard.
  • Step 3 The AP sends a trigger frame to each group of STAs, that is, the group triggering frame is used to carry the group identifier corresponding to the STA corresponding to the group identifier for uplink transmission.
  • Step 4 The AP receives feedback information from at least one STA that has downlink data to be sent and is in a dormant state, where the feedback information is used to indicate that the at least one STA is in an active state.
  • the specific grouping method may be the following method.
  • the AP carries the number of STAs included in each group in the beacon frame, and the STA calculates its group identifier according to its location in the TIM.
  • the specific method is that the STA reads the TIM, obtains the number of 1s in the TIM in which the AID is smaller than the STA, and divides it by the number of STAs in each group, and the obtained integer part is its group identifier. For example, as shown in FIG.
  • Step 1 The STA receives a beacon frame carrying the service identifier mapping information from the AP, where the service identifier mapping information is used to indicate whether the STA has downlink data to be sent.
  • Step 2 The STA determines its group identifier based on the group information.
  • the packet information may be generated by the AP and sent to the STA, or may be specified by a standard.
  • Step 3 If the service identity mapping information indicates that the STA has downlink data to be sent, the STA is switched to an active state.
  • Step 4 The STA receives the trigger sent by the AP by using a listening channel.
  • Step 5 If the group identifier of the STA matches the group identifier in the trigger frame, the STA sends feedback information to the AP, where the feedback information is used to indicate that the STA is in an active state.
  • the specific transmission method may be that a subchannel is randomly selected for transmission.
  • Step 1 The AP sends a beacon frame carrying a trigger frame information unit to the STA, where the trigger frame information unit includes the transmission time information of the first trigger frame.
  • Step 2 The AP sends a trigger frame to the STA, where the trigger frame carries indication information, indicating whether the AP will also send a trigger frame before the next beacon frame arrives.
  • Step 1 The STA receives the beacon frame, reads the transmission time of the first trigger frame included in the trigger frame information unit, and receives the trigger frame sent by the AP when the first trigger frame arrives.
  • Step 2 The STA reads the indication information in the trigger frame. If the indication information indicates that the AP does not send the trigger frame before the next beacon frame arrives, the STA may choose to enter the sleep state and resume the active state when the next beacon frame arrives, thereby receiving the beacon frame; The information indicates that the AP will also send a trigger frame before the next beacon frame arrives, the STA remains active, listens to the channel, receives the next trigger frame, and repeats step 2.
  • the indication information is used to indicate that when the preset condition is met, the AP sends another trigger frame to the STA within a preset time after the STA completes the uplink transmission.
  • the preset condition may include:
  • the preset time can be set to a shorter time, that is, it can be understood that when the AP sends the trigger frame carrying the indication information, indicating the STA, when the preset condition is met, the AP immediately sends another Trigger frame.
  • the process may be as shown in FIG. 40.
  • t is the preset time
  • the BA refers to the block confirmation, which is visible. If the trigger frame received in the current time carries the indication information, the uplink is completed. During the last t time of transmission, the STA will immediately receive another trigger frame sent by the AP; otherwise, the STA will not receive the trigger frame until the next beacon frame arrives.

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Abstract

本发明实施例提供一种上行多用户传输触发帧的发送方法、接入点和站点，该接入点向站点发送携带触发帧信息单元的信标帧，触发帧信息单元包括触发帧的发送信息，站点根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，接入点竞争信道，并在接入点在竞争成功后向站点发送触发帧，此时站点转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后站点按照触发帧的指示进行上行传输。能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。

Description

上行多用户传输触发帧的发送方法、接入点和站点
本申请要求于2015年3月24日提交中国专利局、申请号为PCT/CN2015/074951、发明名称为“上行多用户传输触发帧的发送方法、接入点和站点”的PCT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
本发明实施例涉及通信技术领域，尤其涉及一种上行多用户传输触发帧的发送方法、接入点和站点。
背景技术
正交频分复用(英文：Orthogonal Frequency Division Multiplexing，简称：OFDM)是当前无线通信的基本传输方式，广泛应用于长期演进(英文：Long Term Evolution，简称：LTE)、全球微波接入(英文：Worldwide Interoperability for Microwave Access，简称：WiMAX)、无线保真(英文：Wireless Fidelity，简称：WiFi)等无线通信系统。不仅如此，OFDM也进一步应用到固网传输，比如光纤、铜绞线、电缆等传输方式。OFDM的基本原理是利用子载波的正交性容许的范围内，将子载波间隔压缩到最小，这样既能保证形成多路并行且互不干扰的通路，同时又能提升系统的频率利用效率。由于OFDM具有以上特性，如果将OFDM的互不干扰的子载波分配给多个用户，就能利用OFDM来实现多用户的接入或者数据传输。由此可见，采用OFDMA可以实现多用户数据的并行传输，提高数据的传输并发性。
而多输入多输出(英文：Multiple-Input Multiple-Output，简称：MIMO)技术能够提供发射(接收)波束成形从而有效地提高发射(接收)功率，有效地提高了通信系统的可靠性；另一方面，MIMO技术能够产生额外的空间自由度从而成倍地提高系统的吞吐量，有效地提高了通信系统的速率。因为MIMO技术的这些优点，MIMO技术已经成为802.11n和802.11ac标准协议的关键技术之一。另外，由于采用了波束成形技术，发送端可以通过多个空 间流向多个用户进行数据发送，也可以接收来自多个用户在不同空间流上发送的数据，从而实现多用户数据的并行传输，提高数据传输的并发性。
目前，对于上行多用户传输，常利用包括正交频分多址(Orthogonal Frequency Division Multiple Access，简称：OFDMA)方式，多用户MIMO(Multi-User-MIMO，MU-MIMO)方式或者OFDMA与MU-MIMO混合传输方式，其中，站点(英文：Station，简称：STA)需要通过接入点(英文：Access Point，简称AP)获知其传输配置和参数，例如使用哪一块频谱资源、使用的空间流数、采用的调制编码方式以及时间同步信息等。因此，由接入点触发站点进行上行多用户传输的方式获得了广泛的关注。而对于接入点触发的上行多用户传输，若站点不知道接入点发送触发帧的时间，则必须一直侦听信道，才能接收触发帧进行上行传输，这将不利于站点的节能。
在一种现有技术中，接入点可以通过信标(Beacon)帧进行触发帧调度信息单元的周期性广播，该触发帧调度信息单元携带本次信标帧之后将发送的触发帧的个数以及首次触发帧的发送时间。进一步地，接入点在发送触发帧时，可以在触发帧中携带下一次触发帧的发送间隔，即经过所述发送间隔后接入点将再一次发送触发帧。
但是，如果接入点在每个触发帧中携带下一次触发帧的发送间隔，由于触发帧的触发信令位于其物理层前导中，而此部分信令资源比较宝贵，因此将带来较大的信令开销，且对于某个触发帧，若站点没有成功接收，将无法获得下一次触发帧的发送时间，因而可靠性较差。因此如何在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，以便站点在合适的时间保持接收状态，是本发明要解决的问题。
发明内容
本发明实施例提供一种上行多用户传输触发帧的发送方法、接入点和站点，用于在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，以便站点在合适的时间保持接收状态。
第一方面，提供一种上行多用户传输触发帧的发送方法，所述方法包括：
接入点向站点发送携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述站点获取所述触 发帧的发送周期；
所述接入点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
当到达所述触发帧的目标传输时间时，所述接入点竞争信道；
所述接入点在竞争成功后向所述站点发送所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
结合第一方面，在第一种可能的实现方式中，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
结合第一方面或其第一种可能的实现方式，在第二种可能的实现方式中，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述接入点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
所述接入点根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000001
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
结合第一方面或其第一种可能的实现方式，在第三种可能的实现方式中，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述接入点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
所述接入点根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0+A0,t1+A1,...,tn+An，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000002
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，A0,A1,...,An满足
Figure PCTCN2015076889-appb-000003
-U＜Ai＜U，U为所述触发帧发送窗口大小。
结合第一方面或其上述任一种可能的实现方式，在第四种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者 为所述支持随机竞争传输的触发帧的发送周期。
结合第一方面或其上述任一种可能的实现方式，在第五种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
第二方面，提供一种上行多用户传输触发帧的发送方法，所述方法包括：
站点从接入点接收携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息；
所述站点根据所述触发帧的发送信息获取所述触发帧的发送周期；
所述站点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
当到达所述触发帧的目标传输时间时，所述站点转换为活跃状态；
所述站点通过监听信道接收所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点；
所述站点按照所述触发帧的指示进行上行传输。
结合第二方面，在第一种可能的实现方式中，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
结合第二方面或其第一种可能的实现方式，在第二种可能的实现方式中，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述站点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
所述站点根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000004
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
结合第二方面或其第一种可能的实现方式，在第三种可能的实现方式中，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述站点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
所述站点根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0-U,t1-U,...,tn-U，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000005
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，U为所述触发帧发送窗口大小。
结合第二方面或其上述任一种可能的实现方式，在第四种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
结合第二方面或其上述任一种可能的实现方式，在第五种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
第三方面，提供一种上行多用户传输触发帧的发送方法，所述方法包括：
接入点竞争信道；
所述接入点在竞争成功后向站点发送所述触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧。
结合第三方面，在第一种可能的实现方式中，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
第四方面，提供一种上行多用户传输触发帧的发送方法，所述方法包括：
站点通过监听信道接收接入点发送的触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后 的预设时间内所述接入点将向所述站点下发另一个触发帧；
所述站点按照所述触发帧的指示进行上行传输；
所述站点根据所述指示信息的指示在完成上行传输后保持活跃状态，通过监听信道接收所述另一个触发帧。
结合第四方面，在第一种可能的实现方式中，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
第五方面，提供一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
接入点接收站点发送的资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
所述接入点向所述站点发送携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
所述接入点在所述预设时间内向所述站点下发所述触发帧。
结合第五方面，在第一种可能的实现方式中，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
第六方面，提供一种上行多用户传输触发帧的发送方法，所述方法包括：
站点向接入点发送资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
所述站点从所述接入点接收所述站点发送的携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
若所述指示信息指示所述接入点会在预设时间内将向所述站点下发触发帧，所述站点转换为活跃状态，通过监听信道接收所述触发帧。
结合第六方面，在第一种可能的实现方式中，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
第七方面，提供一种上行多用户传输触发帧的发送方法，所述方法包括：
接入点向站点发送携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
所述接入点向有下行数据待发送的且处于休眠状态的站点发送触发帧；
所述接入点从所述有下行数据待发送的且处于休眠状态的站点中的至少一个站点接收反馈信息，其中，所述反馈信息用于指示所述至少一个站点处于活跃状态；
若所述接入点发送的所述触发帧未能触发所述有下行数据待发送的且处于休眠状态站点中的所有站点，则再次执行所述接入点向有下行数据待发送的且处于休眠状态的站点发送触发帧，直至所述有下行数据待发送的且处于休眠状态站点中的所有站点均被触发。
结合第七方面，在第一种可能的实现方式中，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
结合第七方面的第一种可能的实现方式，在第二种可能的实现方式中，若所述指示信息为所述位图，在所述接入点向站点发送携带业务标识映射信息的信标帧之前，还包括：
所述接入点确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
所述接入点根据所述会进行触发的站点和不进行触发的站点生成所述位图，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发。
结合第七方面的第一种可能的实现方式，在第三种可能的实现方式中，若所述指示信息为所述偏移量信息，在所述接入点向站点发送携带业务标识映射信息的信标帧之前，还包括：
所述接入点确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
所述接入点根据所述会进行触发的站点和不进行触发的站点生成所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量。
结合第七方面或其上述任一种可能的实现方式，在第四种可能的实现方式中，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
第八方面，提供一种上行多用户传输触发帧的发送方法，所述方法包括：
站点从接入点接收携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态；
所述站点通过监听信道接收所述接入点发送的触发帧；
所述站点向所述接入点发送反馈信息，其中，所述反馈信息用于指示所述站点处于活跃状态。
结合第八方面，在第一种可能的实现方式中，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
结合第八方面的第一种可能的实现方式，在第二种可能的实现方式中，若所述指示信息为所述位图，所述若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态包括：
所述站点根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，所述站点根据所述位图中与所述站点对应的比特确定所述站点是否会被触发；其中，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发；
若确定所述站点会被触发，则所述站点转换为活跃状态。
结合第八方面的第一种可能的实现方式，在第三种可能的实现方式中，若所述指示信息为所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量，所述若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态包括：
所述站点根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，所述站点根据所述业务标识映射信息获取所述站点的子标识；
所述站点根据所述起始站点的子标识和偏移量确定的会被触发的站点的标识范围；
所述站点判断所述站点的子标识是否在所述标识范围内；
若所述站点的子标识在所述标识范围内，则所述站点转换为活跃状态。
结合第八方面或其上述任一种可能的实现方式，在第四种可能的实现方 式中，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
第九方面，提供一种接入点，所述接入点包括：收发机和处理器；
所述收发机，用于向站点发送携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述站点获取所述触发帧的发送周期；
所述处理器，用于根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
所述处理器，还用于当到达所述触发帧的目标传输时间时，竞争信道；
所述收发机，还用于在竞争成功后向所述站点发送所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
结合第九方面，在第一种可能的实现方式中，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
结合第九方面或其第一种可能的实现方式，在第二种可能的实现方式中，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述处理器具体用于：
根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000006
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
结合第九方面或其第一种可能的实现方式，在第三种可能的实现方式中，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述处理器具体用于：
根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0+A0,t1+A1,...,tn+An，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000007
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，A0,A1,...,An满足
Figure PCTCN2015076889-appb-000008
-U＜Ai＜U，U为所述触发帧发送窗口大小。
结合第九方面或其上述任一种可能的实现方式，在第四种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输 的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
结合第九方面或其上述任一种可能的实现方式，在第五种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
第十方面，提供一种站点，所述站点包括：收发机、处理器；
所述收发机，用于从接入点接收携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息；
所述处理器，用于根据所述触发帧的发送信息获取所述触发帧的发送周期；
所述处理器，还用于根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
所述处理器，还用于当到达所述触发帧的目标传输时间时，转换为活跃状态；
所述收发机，还用于通过监听信道接收所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点；
所述收发机，还用于按照所述触发帧的指示进行上行传输。
结合第十方面，在第一种可能的实现方式中，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
结合第十方面或其第一种可能的实现方式，在第二种可能的实现方式中，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述处理器具体用于：
根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000009
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
结合第十方面或其第一种可能的实现方式，在第三种可能的实现方式中，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述处理器具体用于：
根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0-U,t1-U,...,tn-U，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000010
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，U为所述触发帧发送窗口大小。
结合第十方面或其上述任一种可能的实现方式，在第四种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
结合第十方面或其上述任一种可能的实现方式，在第五种可能的实现方式中，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
第十一方面，提供一种接入点，所述接入点包括：收发机、处理器；
所述处理器，用于竞争信道；
所述收发机，还用于在竞争成功后向站点发送所述触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧。
结合第十一方面，在第一种可能的实现方式中，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
第十二方面，提供一种站点，所述站点包括：收发机、处理器；
收发机，用于通过监听信道接收接入点发送的触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧；
所述收发机，还用于按照所述触发帧的指示进行上行传输；
所述处理器，用于根据所述指示信息的指示在完成上行传输后保持活跃状态；
所述收发机，还用于通过监听信道接收所述另一个触发帧。
结合第十二方面，在第一种可能的实现方式中，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
第十三方面，提供一种接入点，所述接入点包括：收发机、处理器；
所述收发机，用于接收站点发送的资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
所述收发机，还用于向所述站点发送携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
所述收发机，还用于在所述预设时间内向所述站点下发所述触发帧。
结合第十三方面，在第一种可能的实现方式中，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
第十四方面，提供一种站点，所述站点包括：收发机、处理器；
所述收发机，用于向接入点发送资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
所述收发机，还用于从所述接入点接收所述站点发送的携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
所述处理器，用与当指示信息指示所述接入点会在预设时间内将向所述站点下发触发帧时，转换为活跃状态；
所述收发机，还用于通过监听信道接收所述触发帧。
结合第十四方面，在第一种可能的实现方式中，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
第十五方面，提供一种接入点，所述接入点包括：收发机和处理器；
所述收发机，用于向站点发送信标帧，所述信标帧中包括业务标识映射信息，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
所述收发机，还用于向有下行数据待发送的且处于休眠状态的站点发送触发帧；
所述收发机，还用于从所述有下行数据待发送的且处于休眠状态的站点中的至少一个站点接收反馈信息，其中，所述反馈信息用于指示所述至少一个站点处于活跃状态；
所述收发机，还用于若所述接入点发送的所述触发帧未能触发所述有下行数据待发送的且处于休眠状态站点中的所有站点，则再次执行所述接入点向有下行数据待发送的且处于休眠状态的站点发送触发帧，直至所述有下行数据待发送的且处于休眠状态站点中的所有站点均被触发。
结合第十五方面，在第一种可能的实现方式中，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
结合第十五方面的第一种可能的实现方式，在第二种可能的实现方式中，若所述指示信息为所述位图，所述处理器还用于：
在所述向站点发送信标帧之前，确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
根据所述会进行触发的站点和不进行触发的站点生成所述位图，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发。
结合第十五方面的第一种可能的实现方式，在第三种可能的实现方式中，若所述指示信息为所述偏移量信息，所述处理器还用于：
向站点发送信标帧之前，确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
根据所述会进行触发的站点和不进行触发的站点生成所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量。
结合第十五方面或其上述任一种可能的实现方式，在第四种可能的实现方式中，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
第十六方面，提供一种站点，所述站点包括：收发机、处理器；
所述收发机，用于从接入点接收携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
所述处理器，用于若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态；
所述收发机，还用于通过监听信道接收所述接入点发送的触发帧；
所述收发机，还用于向所述接入点发送反馈信息，其中，所述反馈信息用于指示所述站点处于活跃状态。
结合第十六方面，在第一种可能的实现方式中，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
结合第十六方面的第一种可能的实现方式，在第二种可能的实现方式中，若所述指示信息为所述位图，所述处理器具体用于：
根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，根据所述位图中与所述站点对应的比特确定所述站点是否会被触发；其中，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发；
若确定所述站点会被触发，则转换为活跃状态。
结合第十六方面的第一种可能的实现方式，在第三种可能的实现方式中，若所述指示信息为所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量，所述处理器具体用于：
根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，根据所述业务标识映射信息获取所述站点的子标识；
根据所述起始站点的子标识和偏移量确定的会被触发的站点的标识范围；
判断所述站点的子标识是否在所述标识范围内；
若所述站点的子标识在所述标识范围内，则转换为活跃状态。
结合第十六方面或其上述任一种可能的实现方式，在第四种可能的实现方式中，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
本发明实施例提供一种上行多用户传输触发帧的发送方法、接入点和站 点，该接入点向站点发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，站点在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，接入点竞争信道，并在接入点在竞争成功后向站点发送触发帧，此时，站点转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后站点按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使站点在合适的时间保持接收状态。
本发明实施例提供另一种上行多用户传输触发帧的发送方法、接入点和站点，该接入点在竞争成功后向站点发送触发帧，触发帧中携带指示信息，指示信息用于指示当满足预设条件时，在站点完成上行传输后的预设时间内接入点将向站点下发另一个触发帧，使其他没有进行上行传输的站点或上行传输未完成的站点能够完成上行传输。
本发明实施例提供另一种上行多用户传输触发帧的发送方法、接入点和站点，在接入点发送出触发帧之前，站点先向接入点发送资源分配请求，该送资源分配请求中包括站点的上行传输需求信息，接入点根据上行传输需求信息向站点发送携带指示信息的应答帧，用于指示在预设时间内所述接入点将向所述站点下发触发帧，从而站点在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
本发明实施例还提供另一种上行多用户传输触发帧的发送方法、接入点和站点，接入点向站点发送携带业务标识映射信息的信标帧，用于指示所述站点是否有下行数据待发送，若业务标识映射信息指示站点有下行数据待发送，则站点转换为活跃状态，并通过监听信道接收所述接入点发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的上行多用户传输触发帧的发送方法的应用场景示意图；
图2为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图一；
图3为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图二；
图4为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图三；
图5为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图四；
图6为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图五；
图7为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图六；
图8为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图七；
图9为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图八；
图10为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图九；
图11为本发明实施例提供的上行多用户传输触发帧的发送方法的中的信标帧结构示意图；
图12为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图十；
图13为本发明实施例提供的上行多用户传输触发帧的发送方法的另一种流程示意图一；
图14为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图十一；
图15为本发明实施例提供的上行多用户传输触发帧的发送方法的另一种流程示意图二；
图16为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图十二；
图17为本发明实施例提供的上行多用户传输触发帧的发送方法中的TIM信息的示意图；
图18为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图十三；
图19为本发明实施例提供的上行多用户传输触发帧的发送方法中的位图的示意图；
图20为本发明实施例提供的上行多用户传输触发帧的发送方法的流程示意图十四；
图21为本发明实施例提供的上行多用户传输触发帧的发送方法中的子标识的示意图；
图22为本发明实施例提供的一种接入点的结构示意图；
图23为本发明实施例提供的一种站点的结构示意图；
图24为本发明实施例提供的另一种接入点的结构示意图；
图25为本发明实施例提供的另一种站点的结构示意图；
图26为本发明实施例提供的另一种接入点的结构示意图；
图27为本发明实施例提供的另一种站点的结构示意图；
图28为本发明实施例提供的另一种接入点的结构示意图；
图29为本发明实施例提供的另一种接入点的结构示意图；
图30为本发明实施例提供的另一种站点的结构示意图；
图31为本发明实施例提供的另一种接入点的结构示意图；
图32为本发明实施例提供的另一种站点的结构示意图；
图33为本发明实施例提供的另一种接入点的结构示意图；
图34为本发明实施例提供的另一种站点的结构示意图；
图35为本发明实施例提供的另一种接入点的结构示意图；
图36为本发明实施例提供的另一种站点的结构示意图；
图37为本发明实施例提供的另一种接入点的结构示意图；
图38为本发明实施例提供的另一种站点的结构示意图；
图39为本发明实施例提供的站点分组示意图；
图40为本发明实施例提供的信标帧传输示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例可以应用于无线局域网(英文：Wireless Local Area Network,简称：WLAN)，WLAN中可以包括多个基本服务集(英文：Basic Service Set，简称：BSS)，BSS的网络节点为站点(英文：Station，简称：STA)，站点包括接入点类的站点(英文：Access Point，简称：AP)和非接入点类的站点(英文：None Access Point Station，简称：Non-AP STA)。每个BSS可以包含一个AP和多个关联于该AP的Non-AP STA。
AP，也称之为无线访问接入点或热点等。AP是移动用户进入有线网络的接入点，主要部署于家庭、大楼内部以及园区内部，典型覆盖半径为几十米至上百米，当然，也可以部署于户外。AP相当于一个连接有线网和无线网的桥梁，其主要作用是将各个无线网络客户端连接到一起，然后将无线网络接入以太网。目前AP主要采用的标准为IEEE(英文：Institute of Electrical and Electronics Engineers，中文：电气和电子工程师协会)802.11系列。具体地，AP可以是带有WiFi(英文：Wireless Fidelity,中文：无线保真)芯片的终端设备或者网络设备。可选地，AP可以为支持802.11ax制式的设备，进一步可选地，该AP可以为支持802.11ac、802.11n、802.11g、802.11b及802.11a等多种WLAN制式的设备。
Non-AP STA，以下简称STA，可以是无线通讯芯片、无线传感器或无线通信终端。例如：支持WiFi通讯功能的移动电话、支持WiFi通讯功能的平板电脑、支持WiFi通讯功能的机顶盒、支持WiFi通讯功能的智能电视、支持WiFi通讯功能的智能可穿戴设备和支持WiFi通讯功能的计算机。可选地，STA可以支持802.11ax制式，进一步可选地，该STA支持802.11ac、802.11n、802.11g、802.11b及802.11a等多种WLAN制式。
图1为一个典型的WLAN部署场景的系统示意图，包括一个AP和3个STA，AP分别与STA1、STA2和STA3进行通信。AP和STA之间的上行传输方式包括但不限于OFDMA方式，MU-MIMO方式或者OFDMA与MU-MIMO混合传输方式。下面对本发明实施例提供的上行多用户传输触发帧的发送方法进行详细说明。
实施例一
本发明实施例提供一种上行多用户传输触发帧的发送方法，应用于AP，如图2所示，所述方法包括：
步骤101、AP向STA发送携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述STA获取所述触发帧的发送周期。
步骤102、所述AP根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列。
步骤103、当到达所述触发帧的目标传输时间时，所述AP竞争信道。
步骤104、所述AP在竞争成功后向所述STA发送所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
本发明实施例提供的上行多用户传输触发帧的发送方法，该AP向STA发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，STA在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，AP竞争信道，并在AP在竞争成功后向STA发送触发帧，此时，STA转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后STA按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不 提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例二
本发明实施例提供另一种上行多用户传输触发帧的发送方法，应用于STA，如图3所示，所述方法包括：
步骤201、STA从AP接收携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息。
步骤202、所述STA根据所述触发帧的发送信息获取所述触发帧的发送周期。
步骤203、所述STA根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列。
步骤204、当到达所述触发帧的目标传输时间时，所述STA转换为活跃状态。
步骤205、所述STA通过监听信道接收所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
步骤206、所述STA按照所述触发帧的指示进行上行传输。
本发明实施例提供的上行多用户传输触发帧的发送方法，STA从AP向接收携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，STA在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，AP竞争信道，并在AP在竞争成功后向STA发送触发帧，此时，STA转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后STA按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例三
本发明实施例还提供另一种上行多用户传输触发帧的发送方法，应用于 AP，如图4所示，所述方法包括：
步骤301、AP竞争信道。
步骤302、所述AP在竞争成功后向STA发送所述触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述STA完成上行传输后的预设时间内所述AP将向所述STA下发另一个触发帧。
本发明实施例提供的上行多用户传输触发帧的发送方法，该AP在竞争成功后向STA发送触发帧，触发帧中携带指示信息，指示信息用于指示当满足预设条件时，在STA完成上行传输后的预设时间内AP将向STA下发另一个触发帧，使其他没有进行上行传输的STA或上行传输未完成的STA能够完成上行传输。
实施例四
本发明实施例还提供一种上行多用户传输触发帧的发送方法，应用于STA，如图5所示，所述方法包括：
步骤401、STA通过监听信道接收AP发送的触发帧，所述触发帧中携带指示信息，所述指示信息用于指示在所述STA完成上行传输后的预设时间内所述AP将向所述STA下发另一个触发帧。
步骤402、所述STA按照所述触发帧的指示进行上行传输。
步骤403、所述STA根据所述指示信息的指示在完成上行传输后保持活跃状态，通过监听信道接收所述另一个触发帧。
本发明实施例提供的上行多用户传输触发帧的发送方法，该AP在竞争成功后向STA发送触发帧，触发帧中携带指示信息，指示信息用于指示当满足预设条件时，在STA完成上行传输后的预设时间内AP将向STA下发另一个触发帧，使其他没有进行上行传输的STA或上行传输未完成的STA能够完成上行传输。
实施例五
本发明实施例还提供另一种上行多用户传输触发帧的发送方法，应用于AP，如图6所示，所述方法包括：
步骤501、AP接收STA发送的资源分配请求，所述资源分配请求中包括 所述STA的上行传输需求信息。
步骤502、所述AP向所述STA发送携带指示信息的应答帧，所述指示信息用于指示所述AP是否会在预设时间内将向所述STA下发触发帧。
步骤503、所述AP在所述预设时间内向所述STA下发所述触发帧。
本发明实施例提供的上行多用户传输触发帧的发送方法，在AP发送出触发帧之前，STA先向AP发送资源分配请求，该送资源分配请求中包括STA的上行传输需求信息，AP根据上行传输需求信息向STA发送携带指示信息的应答帧，用于指示所述AP是否会在预设时间内向所述STA下发触发帧，从而STA在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例六
本发明实施例还提供另一种上行多用户传输触发帧的发送方法，应用于STA，如图7所示，所述方法包括：
步骤601、STA向AP发送资源分配请求，所述资源分配请求中包括所述STA的上行传输需求信息。
步骤602、所述STA从所述AP接收所述STA发送的携带指示信息的应答帧，所述指示信息用于指示所述AP是否会在预设时间内将向所述STA下发触发帧。
步骤603、若所述指示信息指示所述AP会在预设时间内将向所述STA下发触发帧，所述STA转换为活跃状态，通过监听信道接收所述触发帧。
本发明实施例提供的上行多用户传输触发帧的发送方法，在AP发送出触发帧之前，STA先向AP发送资源分配请求，该送资源分配请求中包括STA的上行传输需求信息，AP根据上行传输需求信息向STA发送携带指示信息的应答帧，用于指示所述AP是否会在预设时间内向所述STA下发触发帧，从而STA在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧 失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例七
本发明实施例提供一种上行多用户传输触发帧的发送方法，应用于AP，如图8所示，所述方法包括：
步骤701、AP向STA发送携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述STA是否有下行数据待发送。
步骤702、所述AP向有下行数据待发送的且处于休眠状态的STA发送触发帧。
步骤703、所述AP从所述有下行数据待发送的且处于休眠状态的STA中的至少一个STA接收反馈信息，其中，所述反馈信息用于指示所述至少一个STA处于活跃状态。
步骤704、若所述AP发送的所述触发帧未能触发所述有下行数据待发送的且处于休眠状态STA中的所有STA，则再次执行所述AP向有下行数据待发送的且处于休眠状态的STA发送触发帧，直至所述有下行数据待发送的且处于休眠状态STA中的所有STA均被触发。
本发明实施例提供的上行多用户传输触发帧的发送方法，AP向STA发送携带业务标识映射信息的信标帧，用于指示所述STA是否有下行数据待发送，若业务标识映射信息指示STA有下行数据待发送，则STA转换为活跃状态，并通过监听信道接收所述AP发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例八
本发明实施例还提供一种上行多用户传输触发帧的发送方法，应用于STA，如图9所示，所述方法包括：
步骤801、STA从AP接收携带业务标识映射信息的信标帧，所述业务标 识映射信息用于指示所述STA是否有下行数据待发送。
步骤802、若所述业务标识映射信息指示所述STA有下行数据待发送，则所述STA转换为活跃状态。
步骤803、所述STA通过监听信道接收所述AP发送的触发。
步骤804、所述STA向所述AP发送反馈信息，其中，所述反馈信息用于指示所述STA处于活跃状态。
本发明实施例提供的上行多用户传输触发帧的发送方法，AP向STA发送携带业务标识映射信息的信标帧，用于指示所述STA是否有下行数据待发送，若业务标识映射信息指示STA有下行数据待发送，则STA转换为活跃状态，并通过监听信道接收所述AP发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例九
为了使本领域技术人员能够更清楚地理解本发明实施例一和实施例二提供的技术方案，下面通过具体的实施例，对本发明的实施例一和实施例二提供的上行多用户传输触发帧的发送方法进行详细说明，其中，AP通常会与多个STA同时进行交互，为了方便说明，下文实施例中以一个STA为例进行说明，该STA可以是所述多个STA中的任意一个STA，如图10所示，该方法包括：
步骤901、AP向STA发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述STA获取所述触发帧的发送周期。
其中，所述发送信息可以是触发帧的发送周期，也可以是触发帧的发送个数。
另外，信标(Beacon)帧是一种定时广播发送，主要用来通知网络AP的存在性的帧。STA和AP建立关联(Association)的时候也需要使用信标帧。
例如，在最常见的WiFi网络中，AP(如路由器)会周期性地向外发送信标帧，以便于AP的覆盖范围内的STA(如UE)通过扫描能够获取该信标 帧，从而能够识别该AP对应的WiFi网络，并且STA在接入该WiFi网络时也是利用获取到的信标帧进行同步的。信标帧通常以毫秒为单位，每个信标周期的时长相同，一般情况下一个信标周期默认为100毫秒。
步骤902、AP根据触发帧的发送周期获取触发帧的目标传输时间序列。
示例性的，根据触发帧的发送周期获取的目标传输时间序列可以包括：t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000011
ti-ti-1＝tj-tj-1＝T。
其中，t0表示首个触发帧的发送时间，该时间可以为默认的时间点，比如信标帧的发送时刻。
或者，AP可以指定一个时间作为首个触发帧的发送时间，因此，可选的，所述触发帧信息单元还可以包括：首个触发帧的发送时间。此时，t0等于触发帧信息单元中的首个触发帧的发送时间。
可选的，由于在发送触发帧之前，AP需要竞争信道才能获得信道的使用权，因此触发帧实际发送时间可能晚于目标传输时间序列中的目标传输，为了使STA在触发帧发送时保持活跃状态接收触发帧，所述触发帧信息单元还可以包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围。
相应的，AP根据触发帧的发送周期获取触发帧的目标传输时间序列包括：根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列。
其中，所述目标传输时间序列包括：
t0+A0,t1+A1,...,tn+An，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000012
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，A0,A1,...,An满足
Figure PCTCN2015076889-appb-000013
-U＜Ai＜U，U为所述触发帧发送窗口大小。其中，A0,A1,...,An是由AP来确定的。
因此，综上所述，示例性的，如图11所示，可以在信标帧中新增如下字段：触发帧的发送周期(Trigger Frame Interval)，或者触发帧的发送个数(Trigger Frame Number)。可选的(用虚线表示)，还可以包括首个触发帧的发送时间(Trigger Frame Start Time)和/或触发帧发送窗口大小(Trigger Frame Window Size)。
步骤903、STA根据触发帧的发送信息获取触发帧的发送周期。
其中，若发送信息是触发帧的发送周期，则读取该发送信息即可获取触发帧的发送周期；若发送信息是触发帧的发送个数，则用信标帧的发送周期除以触发帧的发送个数即可得到触发帧的发送周期。
步骤904、STA根据触发帧的发送周期获取触发帧的目标传输时间序列。
与步骤902对应，STA根据触发帧的发送周期获取的目标传输时间序列可以包括：t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000014
ti-ti-1＝tj-tj-1＝T。
其中，t0表示首个触发帧的发送时间，该时间可以为默认的时间点，比如信标帧的发送时刻。
可选的，若接收到的信标帧中的触发帧信息单元还包括：首个触发帧的发送时间。此时，t0等于触发帧信息单元中的首个触发帧的发送时间。
可选的，若接收到的信标帧中的触发帧信息单元还包括：触发帧发送窗口大小，则STA根据触发帧的发送周期获取触发帧的目标传输时间序列包括：
根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0-U,t1-U,...,tn-U，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000015
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，U为所述触发帧发送窗口大小。
即可以理解为，此时得到的目标传输时间序列是触发帧可能到来的最早时间点的序列。
步骤905、当到达触发帧的目标传输时间时，AP竞争信道。其中，所述目标传输时间为目标传输时间序列中的任一个时间点。
示例性的，如步骤902中得到的目标传输时间序列t0,t1,...,tn，从t0开始，当到达t0,t1,...,tn中的任一个时间点时，AP开始竞争信道。
或者，如步骤902中得到的目标传输时间序列t0+A0,t1+A1,...,tn+An，从t0+A0开始，当到达t0+A0,t1+A1,...,tn+An中的任一个时间点时，AP开始竞争信道。
步骤906、当到达触发帧的目标传输时间时，STA转换为活跃状态。
当达触发帧的目标传输时间时，AP开始竞争信道，同时STA转换为活跃状态，准备接收AP竞争成功后发送的触发帧。
步骤907、AP在竞争成功后向STA发送触发帧。
步骤908、STA通过监听信道接收触发帧。
在AP在竞争成功后，AP获得信道的使用权，因此STA通过监听信道就可以接收AP发送的触发帧。
步骤909、STA按照触发帧的指示进行上行传输。
另外，值得一提的是，触发帧的类型可以包括：支持调度传输的触发帧，或支持随机竞争传输的触发帧两种。
本发明实施例中的AP发送的触发帧，可以为上述两种中的任意一种，故上述触发帧的发送周期可以为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
或者，本发明实施例中的AP发送的触发帧可以同时包括上述两种，即AP发送的触发帧为两个触发帧，一个为所述支持调度传输的触发帧，另一个为所述支持随机竞争传输的触发帧，所以上述触发帧的发送周期可以包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为支持随机竞争传输的触发帧的发送周期。第一发送周期和第二发送周期的获取方法相同，均可以由AP通过信标帧直接发送，也可以通过AP发送的触发帧的发送个数来计算获得，根据第一发送周期和第二发送周期获取目标传输时间序列的方法也相同，具体参照步骤902和步骤904。
本发明实施例提供的上行多用户传输触发帧的发送方法，该AP向STA发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，STA在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，AP竞争信道，并在AP在竞争成功后向STA发送触发帧，此时，STA转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后STA按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例十
为了使本领域技术人员能够更清楚地理解本发明实施例三和实施例四提供的技术方案，下面通过具体的实施例，对本发明的实施例三和实施例四提供的另一种上行多用户传输触发帧的发送方法进行详细说明，其中，AP通常会与多个STA同时进行交互，为了方便说明，下文实施例中以一个STA为例进行说明，该STA可以是所述多个STA中的任意一个STA，如图12所示，该方法包括：
步骤1101、AP向STA发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述STA获取所述触发帧的发送周期。
其中，发送信息可以是触发帧的发送周期，也可以是触发帧的发送个数。
步骤1102、AP根据触发帧的发送周期获取触发帧的目标传输时间序列(具体步骤与步骤902相同，可参照步骤902，不再赘述)。
步骤1103、STA根据触发帧的发送信息获取触发帧的发送周期。
步骤1104、STA根据触发帧的发送周期获取触发帧的目标传输时间序列(具体步骤与步骤904相同，可参照步骤904，不再赘述)。
步骤1105、当到达触发帧的目标传输时间时，AP竞争信道。其中，所述目标传输时间为目标传输时间序列中的任一个时间点。(具体步骤与步骤904相同，可参照步骤904不再赘述)。
步骤1106、当到达触发帧的目标传输时间时，STA转换为活跃状态。
当达触发帧的目标传输时间时，AP开始竞争信道，同时STA转换为活跃状态，准备接收AP竞争成功后发送的触发帧。
步骤1107、AP在竞争成功后向STA发送触发帧。
其中，所述指示信息用于指示当满足预设条件时，在所述STA完成上行传输后的预设时间内所述AP将向所述STA下发另一个触发帧。
所述预设条件可以包括：
在所述STA完成上行传输后，还有其他STA需要由所述AP触发上行传输；或者
在所述STA完成上行传输后，还存在未完成上行传输的其他STA。
其中，所述预设时间可设置为较短的时间，即可以理解为，当AP下发触发帧中携带指示信息，指示STA，当满足上述的预设条件时，AP会立即下 发另一个触发帧。
示例性的，其过程可以如图13所示，图13中，T为触发帧的发送周期，t为所述预设时间，BA指块确认，可见，正常情况下，在发送触发帧后要间隔T之后AP才会再次下发一个触发帧，但是由于本次收到的触发帧中携带有指示信息，因此，在完成上行传输的后t时间内，STA会立即收到AP发送的另一个触发帧。
步骤1108、STA通过监听信道接收触发帧。
在AP在竞争成功后，AP获得信道的使用权，因此STA通过监听信道就可以接收AP发送的触发帧。
步骤1109、STA按照触发帧的指示进行上行传输。
步骤1110、STA根据所述指示信息的指示在完成上行传输后保持活跃状态，通过监听信道接收所述另一个触发帧。
另外，值得一提的是，本实施例提供的上述方案，即在AP向STA发送一个触发帧后，若满足上述预设条件，则AP向STA立即发送另一个触发帧，不仅适用于上述场景，还可以应用于其他的场景，例如，还可以适用于下文所述的实施例中，即可以理解为，无论采用什么实现方式来实现触发帧的发送和接收，都可以在AP向STA发送一个触发帧后，满足上述预设条件时，向STA立即发送另一个触发帧。
本发明实施例提供的上行多用户传输触发帧的发送方法，AP在向STA发送的触发帧中携带指示信息，指示信息用于指示当满足预设条件时，在所述STA完成上行传输后的预设时间内所述AP将向所述STA下发另一个触发帧，使其他没有进行上行传输的STA或上行传输未完成的STA能够完成上行传输。
实施例十一
为了使本领域技术人员能够更清楚地理解本发明实施例五和实施例六提供的技术方案，下面通过具体的实施例，对本发明的实施例五和实施例六提供的另一种上行多用户传输触发帧的发送方法进行详细说明，其中，AP通常会与多个STA同时进行交互，为了方便说明，下文实施例中以一个STA为例进行说明，该STA可以是所述多个STA中的任意一个STA，如图14所示， 该方法包括：
步骤1301、STA向AP发送资源分配请求(英文：Resource Allocation Request，简称RAR)，所述RAR中包括所述STA的上行传输需求信息。
其中，所述上行传输需求信息包括：所述STA的上行传输的数据量、数据类型和业务优先级等信息。
步骤1302、所述AP向所述STA发送携带指示信息的应答帧，所述应答帧用于回复所述STA已收到其发送的RAR，所述指示信息用于指示所述AP是否会在预设时间内将向所述STA下发触发帧。
步骤1303、若所述指示信息指示所述AP会在预设时间内将向所述STA下发触发帧，所述STA转换为活跃状态。
步骤1304、所述AP在所述预设时间内向所述STA下发所述触发帧。
步骤1305、所述STA通过监听信道接收所述触发帧。示例性的，其过程可以如图15所示。
本发明实施例提供的上行多用户传输触发帧的发送方法，在AP发送出触发帧之前，STA先向AP发送资源分配请求，该送资源分配请求中包括STA的上行传输需求信息，AP根据上行传输需求信息向STA发送携带指示信息的应答帧，用于指示所述AP是否会在预设时间内向所述STA下发触发帧，从而STA在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例十二
为了使本领域技术人员能够更清楚地理解本发明实施例七和实施例八提供的技术方案，下面通过具体的实施例，对本发明的实施例七和实施例八提供的另一种上行多用户传输触发帧的发送方法进行详细说明，其中，AP通常会与多个STA同时进行交互，为了方便说明，下文实施例中以一个STA为例进行说明，该STA可以是所述多个STA中的任意一个STA，如图16所示，该方法包括：
步骤1501、AP向STA发送携带业务标识映射(Traffic Indication Map，简称：TIM)信息的信标帧，所述TIM信息用于指示所述STA是否有下行数据待发送。
示例性的，TIM信息可以如图17所示，图中AID为关联标识，TIM信息中的每个比特(比特)的只用于表示对应的处于休眠状态的STA是否有下行数据待发送，若比特的值为1，则标识该比特对应的处于休眠状态的STA有下行数据待发送，若比特的值为0，则标识该比特对应的处于休眠状态的STA没有下行数据待发送。
步骤1502、所述AP向有下行数据待发送的且处于休眠状态的STA发送触发帧。
步骤1503、所述AP从所述有下行数据待发送的且处于休眠状态的STA中的至少一个STA接收反馈信息，其中，所述反馈信息用于指示所述至少一个STA处于活跃状态。
其中，反馈信息包括PS(Power Save，节能)-POLL(轮询)帧，或者缓冲区信息，或者上行数据。
步骤1504、所述AP判断所述有下行数据待发送的且处于休眠状态STA中的所有STA是否均被触发，若所述所有STA未均被触发，则再次执行步骤1502至步骤1504，直至所述有下行数据待发送的且处于休眠状态STA中的所有STA均被触发。
在另一种可能的实现方式中，信标帧中除了TIM信息外，还包括指示信息，该指示信息可以是位图(Trigger Indication Map)，或偏移量信息。
若所述指示信息为所述位图，则如图18所示，所述上行多用户传输触发帧的发送方法包括：
步骤1701、AP确定所述有下行数据待发送的且处于休眠状态的STA中会进行触发的STA和不进行触发的STA。
步骤1702、所述AP根据所述会进行触发的STA和不进行触发的STA生成所述位图。
示例性的，所述位图可以如图19所示，该位图中的每个比特针对TIM信息中的比特为1的比特对应的STA进行指示，若位图中的某个比特为1， 则该比特对应的STA会被AP触发，若位图中的某个比特为0，则该比特对应的STA不会被AP触发。
步骤1703、所述AP向STA发送携带所述TIM信息和所述位图的信标帧。
步骤1704、所述STA根据所述TIM信息确定所述STA是否有下行数据待发送。若有下行数据待发送则执行步骤1705，否则结束。
步骤1705、所述STA根据所述位图中与所述STA对应的比特确定所述STA是否会被触发。若确定所述STA会被触发，则执行步骤1706，否则结束。
步骤1706、所述STA转换为活跃状态。
步骤1707、所述AP向有下行数据待发送的且处于休眠状态的STA中被所述位图指示会被所述AP触发的STA发送触发帧。
步骤1708、所述STA通过监听信道接收所述AP发送的触发帧。
步骤1709、所述STA向所述AP发送反馈信息。反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
可选的，还可以包括：
所述AP判断所述位图指示的会被所述AP触发的STA中的所有STA是否均被触发，若未均被触发，则再次执行步骤1707，直至所述位图指示的会被所述AP触发的STA中的所有STA均被触发(图中未示出)。
若所述指示信息为所述偏移量信息，则如图20所示，所述上行多用户传输触发帧的发送方法包括：
步骤1901、AP确定所述有下行数据待发送的且处于休眠状态的STA中会进行触发的STA和不进行触发的STA。
步骤1902、所述AP根据所述会进行触发的STA和不进行触发的STA生成所述偏移量信息，所述偏移量信息包括起始STA的子标识(Sub ID)和偏移量(Offset)。
示例性的，所述偏移量信息可以如图21所示，STA的子标识可以根据TIM中与其对应的比特的值来确定，如图21中，从TIM中第一个为1的比特开始，依次为每个值为1的比特标号即可得到有下行数据待发送的且处于 休眠状态的STA的子标识。
从而，根据起始STA的子标识和偏移量就可以确定要触发的STA。
步骤1903、所述AP向STA发送携带所述TIM信息和所述偏移量信息的信标帧。
步骤1904、所述STA根据所述TIM信息确定所述STA是否有下行数据待发送。若有下行数据待发送则执行步骤1905，否则结束。
步骤1905、所述STA根据所述偏移量信确定所述STA是否会被触发。若确定所述STA是否会被触发，则执行步骤1906，否则结束。
具体的，可以判断，所述STA是否落在[Sub ID，Sub ID+Offset]的范围内，就可以确定所述STA是否会被触发。例如，所述STA的子标识为3，起始STA的子标识为1，偏移量为0，则3落在[1，1+8]的范围内，因此可确定所述STA会被AP触发。
步骤1906、所述STA转换为活跃状态。
步骤1907、所述AP向有下行数据待发送的且处于休眠状态的STA中被所述偏移量信息指示会被所述AP触发的STA发送触发帧。
步骤1908、所述STA通过监听信道接收所述AP发送的触发帧。
步骤1909、所述STA向所述AP发送反馈信息。反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
可选的，还可以包括：
所述AP判断所述偏移量信息指示会被所述AP触发的STA中的所有STA是否均被触发，若未均被触发，则再次执行步骤1907，直至所述偏移量信息指示会被所述AP触发的STA中的所有STA均被触发(图中未示出)。
本发明实施例提供的上行多用户传输触发帧的发送方法，AP向STA发送携带业务标识映射信息的信标帧，用于指示所述STA是否有下行数据待发送，若业务标识映射信息指示STA有下行数据待发送，则STA转换为活跃状态，并通过监听信道接收所述AP发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让STA获知触发帧的发送时间，使STA在合适的时间保持接收状态。
实施例十三
本发明实施例提供一种接入点01，如图22所示，所述接入点01包括：
发送单元011，用于向站点发送携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述站点获取所述触发帧的发送周期；
处理单元012，用于根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
所述处理单元012，还用于当到达所述触发帧的目标传输时间时，竞争信道；
所述发送单元011，还用于在竞争成功后向所述站点发送所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
可选的，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
可选的，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述处理单元012具体用于：
根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000016
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
可选的，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述处理单元012具体用于：
根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0+A0,t1+A1,...,tn+An，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000017
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，A0,A1,...,An满足
Figure PCTCN2015076889-appb-000018
-U＜Ai＜U，U为所述触发帧发送窗口大小。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者 为所述支持随机竞争传输的触发帧的发送周期。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
本发明实施例提供一种接入点，该接入点向站点发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，站点在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，接入点竞争信道，并在接入点在竞争成功后向站点发送触发帧，此时，站点转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后站点按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例十四
本发明实施例提供一种站点02，如图23所述，所述站点02包括：
接收单元021，用于从接入点接收携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息；
处理单元022，用于根据所述触发帧的发送信息获取所述触发帧的发送周期；
所述处理单元022，还用于根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
所述处理单元022，还用于当到达所述触发帧的目标传输时间时，转换为活跃状态；
所述接收单元021，还用于通过监听信道接收所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点；
发送单元023，用于按照所述触发帧的指示进行上行传输。
可选的，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
可选的，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述处理单元022具体用于：
根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000019
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
可选的，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述处理单元022具体用于：
所述站点根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0-U,t1-U,...,tn-U，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000020
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，U为所述触发帧发送窗口大小。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
本发明实施例提供一种站点，站点从接入点向接收携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，站点在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，接入点竞争信道，并在接入点在竞争成功后向站点发送触发帧，此时，站点转换为活跃状态， 通过监听信道接收触发帧，接收到触发帧后站点按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例十五
本发明实施例提供一种接入点03，如图24所示，所述接入点03包括：
处理单元031，用于竞争信道；
发送单元032，用于在竞争成功后向站点发送触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧。
可选的，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
本发明实施例提供一种接入点，接入点在向站点发送的触发帧中携带指示信息，指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧，使其他没有进行上行传输的站点或上行传输未完成的站点能够完成上行传输。
实施例十六
本发明实施例提供一种站点04，如图25，所述站点04包括：
接收单元041，还用于通过监听信道接收接入点发送的触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧；
发送单元042，用于按照所述触发帧的指示进行上行传输；
处理单元043，用于根据所述指示信息的指示在完成上行传输后保持活跃状态；
所述接收单元041，还用于通过监听信道接收所述另一个触发帧。
可选的，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
本发明实施例提供一种站点，接入点在向站点发送的触发帧中携带指示信息，指示信息用于指示在当满足预设条件时，所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧，使其他没有进行上行传输的站点或上行传输未完成的站点能够完成上行传输。
实施例十七
本发明实施例提供一种接入点05，如图26所示，所述接入点05包括：
接收单元051，用于接收站点发送的资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
发送单元052，用于向所述站点发送携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
所述发送单元052，还用于在所述预设时间内向所述站点下发所述触发帧。
可选的，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
本发明实施例提供一种接入点，在接入点发送出触发帧之前，站点先向接入点发送资源分配请求，该送资源分配请求中包括站点的上行传输需求信息，接入点根据上行传输需求信息向站点发送携带指示信息的应答帧，用于指示所述接入点是否会在预设时间内向所述站点下发触发帧，从而站点在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例十八
本发明实施例提供一种站点06，如图27所示，所述站点06包括：
发送单元061，用于向接入点发送资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
接收单元062，用于从所述接入点接收所述站点发送的携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
处理单元063，用与当指示信息指示所述接入点会在预设时间内将向所述站点下发触发帧时，转换为活跃状态；
所述接收单元062，还用于通过监听信道接收所述触发帧。
可选的，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
本发明实施例提供一种站点，在接入点发送出触发帧之前，站点先向接入点发送资源分配请求，该送资源分配请求中包括站点的上行传输需求信息，接入点根据上行传输需求信息向站点发送携带指示信息的应答帧，用于指示所述接入点是否会在预设时间内向所述站点下发触发帧，从而站点在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例十九
本发明实施例还提供一种接入点07，如图28所示，所述接入点07包括：
发送单元071，用于向站点发送信标帧，所述信标帧中包括业务标识映射信息，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
所述发送单元071，还用于向有下行数据待发送的且处于休眠状态的站点发送触发帧；
接收单元072，用于从所述有下行数据待发送的且处于休眠状态的站点中的至少一个站点接收反馈信息，其中，所述反馈信息用于指示所述至少一个站点处于活跃状态；
所述发送单元071，还用于若所述接入点发送的所述触发帧未能触发所 述有下行数据待发送的且处于休眠状态站点中的所有站点，则再次执行所述接入点向有下行数据待发送的且处于休眠状态的站点发送触发帧，直至所述有下行数据待发送的且处于休眠状态站点中的所有站点均被触发。
可选的，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
可选的，若所述指示信息为所述位图，如图29所示，所述接入点还包括：处理单元073，所述处理单元073用于：
向站点发送信标帧之前，所述接入点确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
根据所述会进行触发的站点和不进行触发的站点生成所述位图，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发。
可选的，若所述指示信息为所述偏移量信息，所述处理单元073用于：
向站点发送信标帧之前，所述接入点确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
根据所述会进行触发的站点和不进行触发的站点生成所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量。
可选的，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
本发明实施例提供一种接入点，接入点向站点发送携带业务标识映射信息的信标帧，用于指示所述站点是否有下行数据待发送，若业务标识映射信息指示站点有下行数据待发送，则站点转换为活跃状态，并通过监听信道接收所述接入点发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例二十
本发明实施例提供一种站点08，如图30所示，所述站点08包括：
接收单元081，用于从接入点接收携带业务标识映射信息的信标帧，所 述业务标识映射信息用于指示所述站点是否有下行数据待发送；
处理单元082，还用于若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态；
所述接收单元081，还用于通过监听信道接收所述接入点发送的触发帧；
发送单元083，用于向所述接入点发送反馈信息，其中，所述反馈信息用于指示所述站点处于活跃状态。
可选的，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
可选的，若所述指示信息为所述位图，所述处理单元082具体用于：
根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，根据所述位图中与所述站点对应的比特确定所述站点是否会被触发；其中，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发；
若确定所述站点会被触发，则转换为活跃状态。
可选的，若所述指示信息为所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量，所述处理单元082具体用于：
根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，根据所述业务标识映射信息获取所述站点的子标识；
根据所述起始站点的子标识和偏移量确定的会被触发的站点的标识范围；
判断所述站点的子标识是否在所述标识范围内；
若所述站点的子标识在所述标识范围内，则转换为活跃状态。
可选的，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
本发明实施例提供一种站点，接入点向站点发送携带业务标识映射信息的信标帧，用于指示所述站点是否有下行数据待发送，若业务标识映射信息指示站点有下行数据待发送，则站点转换为活跃状态，并通过监听信道接收所述接入点发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了 信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例二十一
本发明实施例提供一种接入点09，如图31所示，所述接入点09包括：收发机091和处理器092；
所述收发机091，用于向站点发送携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述站点获取所述触发帧的发送周期；
所述处理器092，用于根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
所述处理器092，还用于当到达所述触发帧的目标传输时间时，竞争信道；
所述收发机091，还用于在竞争成功后向所述站点发送所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
可选的，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
可选的，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述处理器092具体用于：
根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000021
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
可选的，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述处理器092具体用于：
根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0+A0,t1+A1,...,tn+An，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000022
ti-ti-1＝tj-tj-1＝T， 其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，A0,A1,...,An满足
Figure PCTCN2015076889-appb-000023
-U＜Ai＜U，U为所述触发帧发送窗口大小。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为支持随机竞争传输的触发帧的发送周期。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为支持随机竞争传输的触发帧的发送周期。
本发明实施例提供一种接入点，该接入点向站点发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，站点在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，接入点竞争信道，并在接入点在竞争成功后向站点发送触发帧，此时，站点转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后站点按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例二十二
本发明实施例提供一种站点10，如图32，所述站点10包括：收发机1001、处理器1002；
所述收发机1001，用于从接入点接收携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息；
所述处理器1002，用于根据所述触发帧的发送信息获取所述触发帧的发送周期；
所述处理器1002，还用于根据所述触发帧的发送周期获取所述触发帧的 目标传输时间序列；
所述处理器1002，还用于当到达所述触发帧的目标传输时间时，转换为活跃状态；
所述收发机1001，还用于通过监听信道接收所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点；
所述收发机1001，还用于按照所述触发帧的指示进行上行传输。
可选的，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
可选的，所述触发帧信息单元还包括：首个触发帧的发送时间；
所述处理器1002具体用于：
根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0,t1,...,tn，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000024
ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
可选的，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
所述处理器1002具体用于：
根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
t0-U,t1-U,...,tn-U，其中，t0,t1,...,tn满足
Figure PCTCN2015076889-appb-000025
ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，U为所述触发帧发送窗口大小。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为支持随机竞争传输的触发帧的发送周期。
可选的，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期 为支持随机竞争传输的触发帧的发送周期。
本发明实施例提供一种站点，站点从接入点向接收携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，该发送信息可以是触发帧的发送周期或发送个数，站点在接收信标帧后根据该发送信息获取触发帧的目标传输时间序列，当到达触发帧的目标传输时间时，接入点竞争信道，并在接入点在竞争成功后向站点发送触发帧，此时，站点转换为活跃状态，通过监听信道接收触发帧，接收到触发帧后站点按照触发帧的指示进行上行传输。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例二十三
本发明实施例提供一种接入点11，如图33，所述接入点11包括：收发机1101、处理器1102；
所述处理器1102，用于竞争信道；
所述收发机1101，用于在竞争成功后向站点发送触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧。
可选的，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
本发明实施例提供一种接入点，该接入点在向站点发送的触发帧中携带指示信息，指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧，使其他没有进行上行传输的站点或上行传输未完成的站点能够完成上行传输。
实施例二十四
本发明实施例提供一种站点12，如图34，所述站点12包括：收发机1201、 处理器1202；
所述收发机1201，用于通过监听信道接收接入点发送的触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧；
所述收发机1201，还用于按照所述触发帧的指示进行上行传输；
所述处理器1202，还用于根据所述指示信息的指示在完成上行传输后保持活跃状态；
所述收发机1201，还用于通过监听信道接收所述另一个触发帧。
可选的，所述预设条件包括：
在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
本发明实施例提供一种站点，该接入点在向站点发送的触发帧中携带指示信息，指示信息用于指示在当满足预设条件时，所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧，使其他没有进行上行传输的站点或上行传输未完成的站点能够完成上行传输。
实施例二十五
本发明实施例提供一种接入点13，如图35所示，所述接入点13包括：收发机1301、处理器1302；
所述收发机1301，用于接收站点发送的资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
所述收发机1301，还用于向所述站点发送携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
所述收发机1301，还用于在所述预设时间内向所述站点下发所述触发帧。
可选的，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
本发明实施例提供一种接入点，在接入点发送出触发帧之前，站点先向 接入点发送资源分配请求，该送资源分配请求中包括站点的上行传输需求信息，接入点根据上行传输需求信息向站点发送携带指示信息的应答帧，用于指示所述接入点是否会在预设时间内向所述站点下发触发帧，从而站点在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例二十六
本发明实施例提供一种站点14，如图36所示，所述站点14包括：收发机1401、处理器1402；
所述收发机1401，用于向接入点发送资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
所述收发机1401，还用于从所述接入点接收所述站点发送的携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
所述处理器1402，用与当指示信息指示所述接入点会在预设时间内将向所述站点下发触发帧时，转换为活跃状态；
所述收发机1401，还用于通过监听信道接收所述触发帧。
可选的，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
本发明实施例提供一种站点，在接入点发送出触发帧之前，站点先向接入点发送资源分配请求，该送资源分配请求中包括站点的上行传输需求信息，接入点根据上行传输需求信息向站点发送携带指示信息的应答帧，用于指示所述接入点是否会在预设时间内向所述站点下发触发帧，从而站点在收到应答帧后转换为活跃状态，通过监听信道接收所述触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例二十七
本发明实施例还提供一种接入点15，如图37所示，所述接入点15包括：收发机1501和处理器1502；
所述收发机1501，用于向站点发送信标帧，所述信标帧中包括业务标识映射信息，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
所述收发机1501，还用于向有下行数据待发送的且处于休眠状态的站点发送触发帧；
所述收发机1501，还用于从所述有下行数据待发送的且处于休眠状态的站点中的至少一个站点接收反馈信息，其中，所述反馈信息用于指示所述至少一个站点处于活跃状态；
所述收发机1501，还用于若所述接入点发送的所述触发帧未能触发所述有下行数据待发送的且处于休眠状态站点中的所有站点，则再次执行所述接入点向有下行数据待发送的且处于休眠状态的站点发送触发帧，直至所述有下行数据待发送的且处于休眠状态站点中的所有站点均被触发。
可选的，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
可选的，若所述指示信息为所述位图，所述处理器1502还用于：
在所述向站点发送信标帧之前，确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
根据所述会进行触发的站点和不进行触发的站点生成所述位图，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发。
可选的，若所述指示信息为所述偏移量信息，所述处理器1502还用于：
向站点发送信标帧之前，确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
根据所述会进行触发的站点和不进行触发的站点生成所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量。
可选的，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
本发明实施例提供一种接入点，接入点向站点发送携带业务标识映射信 息的信标帧，用于指示所述站点是否有下行数据待发送，若业务标识映射信息指示站点有下行数据待发送，则站点转换为活跃状态，并通过监听信道接收所述接入点发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
实施例二十八
本发明实施例提供一种站点16，如图38所示，所述站点16包括：收发机1601、处理器1602；
所述收发机1601，用于从接入点接收携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
所述处理器1602，用于若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态；
所述收发机1601，还用于通过监听信道接收所述接入点发送的触发帧；
所述收发机1601，还用于向所述接入点发送反馈信息，其中，所述反馈信息用于指示所述站点处于活跃状态。
可选的，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
可选的，若所述指示信息为所述位图，所述处理器1602具体用于：
根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，根据所述位图中与所述站点对应的比特确定所述站点是否会被触发；其中，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发；
若确定所述站点会被触发，则转换为活跃状态。
可选的，若所述指示信息为所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量，所述处理器1602具体用于：
根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
若确定所述站点有下行数据待发送，根据所述业务标识映射信息获取所 述站点的子标识；
根据所述起始站点的子标识和偏移量确定的会被触发的站点的标识范围；
判断所述站点的子标识是否在所述标识范围内；
若所述站点的子标识在所述标识范围内，则转换为活跃状态。
可选的，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
本发明实施例提供一种站点，接入点向站点发送携带业务标识映射信息的信标帧，用于指示所述站点是否有下行数据待发送，若业务标识映射信息指示站点有下行数据待发送，则站点转换为活跃状态，并通过监听信道接收所述接入点发送的触发帧。由此可见，不需要在触发帧中携带信息，节省了信令开销，也避免了触发帧失败时对下一个触发帧的影响，从而能够在不提高信令开销并保证可靠性的情况下，让站点获知触发帧的发送时间，使站点在合适的时间保持接收状态。
在本发明所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算 机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的装置的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
需要说明的是，前文所述实施例9至少还包括下列实施方式。
在实施例9的步骤901中已经提到
AP向STA发送携带触发帧信息单元的信标帧，触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述STA获取所述触发帧的发送周期。
其中，所述发送信息可以是触发帧的发送周期，也可以是触发帧的发送个数。
若该发送信息是触发帧的发送个数，步骤903中已经提到，可以则用信标帧的发送周期除以触发帧的发送个数即可得到触发帧的发送周期。
除此之外，AP可以根据其他的计算规则使用所述触发帧的发送个数计算出触发帧的发送周期。所述计算规则包括但不限于以下方法。
方法一：触发帧的发送周期可以通过信标帧间隔减去首个触发帧发送时间，再除以触发帧的发送个数得到。具体的计算公式如下：
Figure PCTCN2015076889-appb-000026
其中triggerInterval为触发帧的发送周期，beaconInterval为信标帧的发送周期，firstTriggerTime为首个触发帧相对于上一个信标帧的发送时间，triggerNum为触发帧的发送个数。
触发帧的发送周期的单位可以是时间单元(Time Unit,TU＝1024us)，若通过上式计算出的触发帧发送周期不是TU的整数倍，则可以对其进行下取整操作，作为触发帧的发送周期。
方法二：
信标帧间间隔可以分为两个阶段，竞争传输阶段和调度传输阶段，两个阶段的持续时间分别为contentionPhaseTime和schedulingPhaseTime，两者之和为信标帧间隔。
对于支持竞争的触发帧，其发送周期可以通过竞争传输阶段时长减去首个触发帧发送时间，再除以触发帧的发送个数得到。具体的计算公式如下：
Figure PCTCN2015076889-appb-000027
其中triggerInterval_R为支持竞争的触发帧的发送周期，contentionPhaseTime为竞争传输阶段时长，firstTriggerTime为首个支持竞争的触发帧相对于上一个信标帧的发送时间，triggerNum为支持竞争的触发帧的发送个数。
对于支持调度传输的触发帧，其发送周期可以通过调度传输阶段时长减去首个触发帧发送时间，再除以触发帧的发送个数得到。具体的计算公式如下：
Figure PCTCN2015076889-appb-000028
其中triggerInterval_S为支持调度传输的触发帧的发送周期，schedulingPhaseTime为调度传输阶段时长，firstTriggerTime为首个支持调度传输的触发帧相对于调度传输阶段起点的发送时间，triggerNum为支持调度传输的触发帧的发送个数。
触发帧的发送周期的单位可以是时间单元(Time Unit,TU＝1024us)，若通过上式计算出的触发帧发送周期不是TU的整数倍，则可以对其进行下取整操作，作为触发帧的发送周期。
另外，本实施例中所提到的首个触发帧的发送时间可以是绝对时间也可以是相对时间，所述绝对时间是指以节点本身保存的系统时间为参照的时间，所述相对时间是指以信标帧的发送开始时间或者发送结束时间为起点的一段时间。优选地，可以采用相对时间。
需要说明的是，前文所述实施例10至少还包括下列实施方式。
在实施例10的步骤1107中已经提到AP可以在触发帧中携带指示信息，指示当满足特定的预设条件时，AP会立即下发另一个触发帧。在步骤1110中已经提到STA根据所述指示信息的指示在完成上行传输后保持活跃状态，通过监听信道接收所述另一个触发帧。
这里需要强调的是所述指示信息可以是针对所有STA的公共指示信息，也可以是针对该触发帧中触发的每一个STA的私有指示信息。对于前者，所述指示信息表示AP将下发另一个触发帧，该另一个触发帧可能触发所有的STA；对于后者，所述针对每一个STA的指示信息表示AP将下发另一个触发帧，该另一个触发帧将触发该STA进行传输。
若所述指示信息是针对所有STA的公共指示信息，则AP和STA的实施流程与前文所述实施例10相同。
若所述指示信息是针对该触发帧中触发的每一个STA的私有指示信息，则具体的实施流程将实施例10中原有的步骤1107修改为如下步骤：
步骤1107、AP在竞争成功后向STA发送触发帧。
其中，所述触发帧中包含指示信息，所述指示信息是一个位图字段，所述位图字段是根据所述触发帧中所触发的STA生成的，每个STA对应位图字段中的一个比特，每个比特为1表示当满足预设条件时，在所述STA完成上行传输后的预设时间内所述AP将向所述STA下发另一个触发帧。
指示信息用于指示当满足预设条件时，在所述STA完成上行传输后的预设时间内所述AP将向所述STA下发另一个触发帧。
所述预设条件可以包括：
在所述STA完成上行传输后，所述STA还存在其他的数据待传输。
其中，所述预设时间可设置为较短的时间，即可以理解为，当AP下发触发帧中携带指示信息，指示STA满足上述的预设条件时，AP会立即下发另一个触发帧。
示例性的，其过程可以如图13所示，图13中，T为触发帧的发送周期，t为所述预设时间，BA指块确认，可见，正常情况下，在发送触发帧后要间隔T之后AP才会再次下发一个触发帧，但是由于本次收到的触发帧中携带有指示信息，因此，在完成上行传输的后t时间内，STA会立即收到AP发送的另一个触发帧。
需要说明的是，前文所述实施例12至少还包括下列实施方式。
在实施例12中已经提到，AP可以根据业务标识映射的指示对STA进行触发。除此之外，还可以采用以下的方式对STA进行触发。
AP侧：
步骤1：AP向STA发送携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述STA是否有下行数据待发送。
步骤2：AP根据分组信息将步骤1中的业务标识映射信息进行分组，每一组业务标识映射信息对应一个组标识，因此每一组业务标识映射信息所映射的每一组STA也对应一个组标识。所述分组信息可以由AP产生并下发给STA，也可以由标准规定。
步骤3：AP针对每一组STA发送触发帧，即在发送的触发帧中携带组标识，用来触发所述组标识对应的STA进行上行传输。
步骤4：所述AP从所述有下行数据待发送的且处于休眠状态的STA中的至少一个STA接收反馈信息，其中，所述反馈信息用于指示所述至少一个STA处于活跃状态。
对于上述步骤2，具体的分组方法可以是以下方法。AP在信标帧中携带每个组包含的STA数，STA根据其在TIM中的位置计算其组标识。具体方法为，STA读取TIM，获得TIM中AID小于所述STA的那一段中1的个数，将其除以每组的STA数，所得的整数部分即为其组标识。举例来说，如图39所示，若每组的STA数为4，对于AID＝16的STA，在TIM中，该AID＝16的STA前面有9个STA的TIM值为1，则该STA的组标识为9/4＝2(下取整)。
STA侧：
步骤1：STA从AP接收携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述STA是否有下行数据待发送。
步骤2：STA根据分组信息确定其组标识。所述分组信息可以由AP产生并下发给STA，也可以由标准规定。
步骤3:若所述业务标识映射信息指示所述STA有下行数据待发送，则所述STA转换为活跃状态。
步骤4:所述STA通过监听信道接收所述AP发送的触发。
步骤5：若STA的组标识与触发帧中的组标识匹配，则所述STA向所述AP发送反馈信息，其中，所述反馈信息用于指示所述STA处于活跃状态。具体的发送方法可以是随机选取一个子信道进行发送。
需要说明的是，本发明方案还可以有如下的实施例。
AP侧：
步骤1、AP向STA发送携带触发帧信息单元的信标帧，触发帧信息单元中包括首个触发帧的发送时间信息。
步骤2、AP向STA发送触发帧，所述触发帧中携带指示信息，指示在下一个信标帧到来之前，AP是否还会下发触发帧。
STA侧：
步骤1、STA接收信标帧，读取其中触发帧信息单元中包含的首个触发帧的发送时间，并在首个触发帧到来的时候接收AP发送的触发帧。
步骤2、STA读取触发帧中的指示信息。若所述指示信息表明AP在下一个信标帧到来之前不会发送触发帧，STA可以选择进入休眠状态，并在下一个信标帧到来的时候恢复活跃状态，从而接收信标帧；若所述指示信息表明AP在下一个信标帧到来之前还会发送触发帧，STA保持活跃状态，并侦听信道，接收下一个触发帧，并重复步骤2。
指示信息用于指示当满足预设条件时，在所述STA完成上行传输后的预设时间内所述AP将向所述STA下发另一个触发帧。
所述预设条件可以包括：
在所述STA完成上行传输后，还有其他STA需要由所述AP触发上行传输；或者
在所述STA完成上行传输后，还存在未完成上行传输的其他STA。
其中，所述预设时间可设置为较短的时间，即可以理解为，当AP下发触发帧中携带指示信息，指示STA，当满足上述的预设条件时，AP会立即下发另一个触发帧。
示例性的，其过程可以如图40所示，图40中，t为所述预设时间，BA指块确认，可见，若本次收到的触发帧中携带有指示信息，那么在完成上行传输的后t时间内，STA会立即收到AP发送的另一个触发帧；否则，在下一次信标帧到来之前，STA不会收到触发帧。

Claims (60)

  1. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    接入点向站点发送携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述站点获取所述触发帧的发送周期；
    所述接入点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
    当到达所述触发帧的目标传输时间时，所述接入点竞争信道；
    所述接入点在竞争成功后向所述站点发送所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
  2. 根据权利要求1所述的方法，其特征在于，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
  3. 根据权利要求1或2所述的方法，其特征在于，所述触发帧信息单元还包括：首个触发帧的发送时间；
    所述接入点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
    所述接入点根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0,t1,...,tn，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100001
    ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
  4. 根据权利要求1或2所述的方法，其特征在于，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
    所述接入点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
    所述接入点根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0+A0,t1+A1,...,tn+An，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100002
    ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，A0,A1,...,An满足
    Figure PCTCN2015076889-appb-100003
    -U＜Ai＜U，U为所述触发帧发送窗口大小。
  5. 根据权利要求2至4任一项所述的方法，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
  6. 根据权利要求2至4任一项所述的方法，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
  7. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    站点从接入点接收携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息；
    所述站点根据所述触发帧的发送信息获取所述触发帧的发送周期；
    所述站点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
    当到达所述触发帧的目标传输时间时，所述站点转换为活跃状态；
    所述站点通过监听信道接收所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点；
    所述站点按照所述触发帧的指示进行上行传输。
  8. 根据权利要求7所述的方法，其特征在于，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
  9. 根据权利要求7或8所述的方法，其特征在于，所述触发帧信息单元还包括：首个触发帧的发送时间；
    所述站点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
    所述站点根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0,t1,...,tn，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100004
    ti-ti-1＝tj-tj-1＝T，T为所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
  10. 根据权利要求7或8所述的方法，其特征在于，所述触发帧信息单 元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
    所述站点根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列包括：
    所述站点根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0-U,t1-U,...,tn-U，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100005
    ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，U为所述触发帧发送窗口大小。
  11. 根据权利要求8至10任一项所述的方法，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
  12. 根据权利要求8至10任一项所述的方法，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
  13. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    接入点竞争信道；
    所述接入点在竞争成功后向站点发送触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧。
  14. 根据权利要求13所述的方法，其特征在于，所述预设条件包括：
    在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
    在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
  15. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    站点通过监听信道接收接入点发送的触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧；
    所述站点按照所述触发帧的指示进行上行传输；
    所述站点根据所述指示信息的指示在完成上行传输后保持活跃状态，通过监听信道接收所述另一个触发帧。
  16. 根据权利要求15所述的方法，其特征在于，所述预设条件包括：
    在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
    在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
  17. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    接入点接收站点发送的资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
    所述接入点向所述站点发送携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
    所述接入点在所述预设时间内向所述站点下发所述触发帧。
  18. 根据权利要求17所述的方法，其特征在于，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
  19. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    站点向接入点发送资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
    所述站点从所述接入点接收所述站点发送的携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
    若所述指示信息指示所述接入点会在预设时间内将向所述站点下发触发帧，所述站点转换为活跃状态；
    所述站点通过监听信道接收所述触发帧。
  20. 根据权利要求19所述的方法，其特征在于，所述上行传输需求信息 包括：所述站点的上行传输的数据量、数据类型和业务优先级。
  21. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    接入点向站点发送携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
    所述接入点向有下行数据待发送的且处于休眠状态的站点发送触发帧；
    所述接入点从所述有下行数据待发送的且处于休眠状态的站点中的至少一个站点接收反馈信息，其中，所述反馈信息用于指示所述至少一个站点处于活跃状态；
    若所述接入点发送的所述触发帧未能触发所述有下行数据待发送的且处于休眠状态站点中的所有站点，则再次执行所述接入点向其他未被触发的有下行数据待发送的且处于休眠状态的站点发送触发帧，直至所述有下行数据待发送的且处于休眠状态站点中的所有站点均被触发。
  22. 根据权利要求21所述的方法，其特征在于，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
  23. 根据权利要求22所述的方法，其特征在于，若所述指示信息为所述位图，在所述接入点向站点发送携带业务标识映射信息的信标帧之前，还包括：
    所述接入点确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
    所述接入点根据所述会进行触发的站点和不进行触发的站点生成所述位图，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发。
  24. 根据权利要求22所述的方法，其特征在于，若所述指示信息为所述偏移量信息，在所述接入点向站点发送携带业务标识映射信息的信标帧之前，还包括：
    所述接入点确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
    所述接入点根据所述会进行触发的站点和不进行触发的站点生成所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量。
  25. 根据权利要求21至24任一项所述的方法，其特征在于，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
  26. 一种上行多用户传输触发帧的发送方法，其特征在于，所述方法包括：
    站点从接入点接收携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
    若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态；
    所述站点通过监听信道接收所述接入点发送的触发帧；
    所述站点向所述接入点发送反馈信息，其中，所述反馈信息用于指示所述站点处于活跃状态。
  27. 根据权利要求26所述的方法，其特征在于，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
  28. 根据权利要求27所述的方法，其特征在于，若所述指示信息为所述位图，所述若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态包括：
    所述站点根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
    若确定所述站点有下行数据待发送，所述站点根据所述位图中与所述站点对应的比特确定所述站点是否会被触发；其中，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发；
    若确定所述站点会被触发，则所述站点转换为活跃状态。
  29. 根据权利要求27所述的方法，其特征在于，若所述指示信息为所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量，所述若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态包括：
    所述站点根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
    若确定所述站点有下行数据待发送，所述站点根据所述业务标识映射信 息获取所述站点的子标识；
    所述站点根据所述起始站点的子标识和偏移量确定的会被触发的站点的标识范围；
    所述站点判断所述站点的子标识是否在所述标识范围内；
    若所述站点的子标识在所述标识范围内，则所述站点转换为活跃状态。
  30. 根据权利要求26至29任一项所述的方法，其特征在于，所述反馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
  31. 一种接入点，其特征在于，所述接入点包括：收发机和处理器；
    所述收发机，用于向站点发送携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息，所述触发帧的发送信息用于所述站点获取所述触发帧的发送周期；
    所述处理器，用于根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
    所述处理器，还用于当到达所述触发帧的目标传输时间时，竞争信道；
    所述收发机，还用于在竞争成功后向所述站点发送所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点。
  32. 根据权利要求31所述的接入点，其特征在于，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
  33. 根据权利要求31或32所述的接入点，其特征在于，所述触发帧信息单元还包括：首个触发帧的发送时间；
    所述处理器具体用于：
    根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0,t1,...,tn，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100006
    ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
  34. 根据权利要求31或32所述的接入点，其特征在于，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
    所述处理器具体用于：
    根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧 的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0+A0,t1+A1,...,tn+An，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100007
    ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，A0,A1,...,An满足
    Figure PCTCN2015076889-appb-100008
    -U＜Ai＜U，U为所述触发帧发送窗口大小。
  35. 根据权利要求32至34任一项所述的接入点，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
  36. 根据权利要求32至34任一项所述的接入点，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
  37. 一种站点，其特征在于，所述站点包括：收发机、处理器；
    所述收发机，用于从接入点接收携带触发帧信息单元的信标帧，所述触发帧信息单元中包括触发帧的发送信息；
    所述处理器，用于根据所述触发帧的发送信息获取所述触发帧的发送周期；
    所述处理器，还用于根据所述触发帧的发送周期获取所述触发帧的目标传输时间序列；
    所述处理器，还用于当到达所述触发帧的目标传输时间时，转换为活跃状态；
    所述收发机，还用于通过监听信道接收所述触发帧，所述目标传输时间为所述目标传输时间序列中的任一个时间点；
    所述收发机，还用于按照所述触发帧的指示进行上行传输。
  38. 根据权利要求37所述的站点，其特征在于，所述触发帧的发送信息为所述触发帧的发送周期，或者所述触发帧的发送个数。
  39. 根据权利要求37或38所述的站点，其特征在于，所述触发帧信息单元还包括：首个触发帧的发送时间；
    所述处理器具体用于：
    根据所述首个触发帧的发送时间和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0,t1,...,tn，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100009
    ti-ti-1＝tj-tj-1＝T，T等于所述触发帧的发送周期，t0等于所述首个触发帧的发送时间。
  40. 根据权利要求37或38所述的站点，其特征在于，所述触发帧信息单元还包括：触发帧发送窗口大小，所述触发帧发送窗口大小用于指示触发帧的发送时间的调整范围；
    所述处理器具体用于：
    根据所述触发帧发送窗口大小和所述触发帧的发送周期获取所述触发帧的目标传输时间序列；其中，所述目标传输时间序列包括：
    t0-U,t1-U,...,tn-U，其中，t0,t1,...,tn满足
    Figure PCTCN2015076889-appb-100010
    ti-ti-1＝tj-tj-1＝T，其中，T等于所述触发帧的发送周期，t0,t1,...,tn是周期为T的周期性序列，U为所述触发帧发送窗口大小。
  41. 根据权利要求38至40任一项所述的站点，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期为所述支持调度传输的触发帧的发送周期，或者为所述支持随机竞争传输的触发帧的发送周期。
  42. 根据权利要求38至40任一项所述的站点，其特征在于，所述触发帧的类型包括：支持调度传输的触发帧或支持随机竞争传输的触发帧；
    所述触发帧的发送周期包括：第一发送周期和第二发送周期，其中所述第一发送周期为所述支持调度传输的触发帧的发送周期，所述第二发送周期为所述支持随机竞争传输的触发帧的发送周期。
  43. 一种接入点，其特征在于，所述接入点包括：收发机、处理器；
    所述处理器，用于竞争信道；
    所述收发机，还用于在竞争成功后向站点发送触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧。
  44. 根据权利要求43所述的接入点，其特征在于，所述预设条件包括：
    在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
    在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
  45. 一种站点，其特征在于，所述站点包括：收发机、处理器；
    所述收发机，用于通过监听信道接收接入点发送的触发帧，所述触发帧中携带指示信息，所述指示信息用于指示当满足预设条件时，在所述站点完成上行传输后的预设时间内所述接入点将向所述站点下发另一个触发帧；
    所述收发机，还用于按照所述触发帧的指示进行上行传输；
    所述处理器，用于根据所述指示信息的指示在完成上行传输后保持活跃状态；
    所述收发机，还用于通过监听信道接收所述另一个触发帧。
  46. 根据权利要求45所述的站点，其特征在于，所述预设条件包括：
    在所述站点完成上行传输后，还有其他站点需要由所述接入点触发上行传输；或者
    在所述站点完成上行传输后，还存在未完成上行传输的其他站点。
  47. 一种接入点，其特征在于，所述接入点包括：收发机、处理器；
    所述收发机，用于接收站点发送的资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
    所述收发机，还用于向所述站点发送携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
    所述收发机，还用于在所述预设时间内向所述站点下发所述触发帧。
  48. 根据权利要求47所述的接入点，其特征在于，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
  49. 一种站点，其特征在于，所述站点包括：收发机、处理器；
    所述收发机，用于向接入点发送资源分配请求，所述资源分配请求中包括所述站点的上行传输需求信息；
    所述收发机，还用于从所述接入点接收所述站点发送的携带指示信息的应答帧，所述指示信息用于指示所述接入点是否会在预设时间内将向所述站点下发触发帧；
    所述处理器，用与当指示信息指示所述接入点会在预设时间内将向所述站点下发触发帧时，转换为活跃状态；
    所述收发机，还用于通过监听信道接收所述触发帧。
  50. 根据权利要求49所述的站点，其特征在于，所述上行传输需求信息包括：所述站点的上行传输的数据量、数据类型和业务优先级。
  51. 一种接入点，其特征在于，所述接入点包括：收发机和处理器；
    所述收发机，用于向站点发送信标帧，所述信标帧中包括业务标识映射信息，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
    所述收发机，还用于向有下行数据待发送的且处于休眠状态的站点发送触发帧；
    所述收发机，还用于从所述有下行数据待发送的且处于休眠状态的站点中的至少一个站点接收反馈信息，其中，所述反馈信息用于指示所述至少一个站点处于活跃状态；
    所述收发机，还用于若所述接入点发送的所述触发帧未能触发所述有下行数据待发送的且处于休眠状态站点中的所有站点，则再次执行所述接入点向有下行数据待发送的且处于休眠状态的站点发送触发帧，直至所述有下行数据待发送的且处于休眠状态站点中的所有站点均被触发。
  52. 根据权利要求51所述的接入点，其特征在于，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
  53. 根据权利要求52所述的接入点，其特征在于，若所述指示信息为所述位图，所述处理器还用于：
    在所述向站点发送信标帧之前，确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
    根据所述会进行触发的站点和不进行触发的站点生成所述位图，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发。
  54. 根据权利要求52所述的接入点，其特征在于，若所述指示信息为所述偏移量信息，所述处理器还用于：
    向站点发送信标帧之前，确定所述有下行数据待发送的且处于休眠状态的站点中会进行触发的站点和不进行触发的站点；
    根据所述会进行触发的站点和不进行触发的站点生成所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量。
  55. 根据权利要求51至54任一项所述的接入点，其特征在于，所述反 馈信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
  56. 一种站点，其特征在于，所述站点包括：收发机、处理器；
    所述收发机，用于从接入点接收携带业务标识映射信息的信标帧，所述业务标识映射信息用于指示所述站点是否有下行数据待发送；
    所述处理器，用于若所述业务标识映射信息指示所述站点有下行数据待发送，则所述站点转换为活跃状态；
    所述收发机，还用于通过监听信道接收所述接入点发送的触发帧；
    所述收发机，还用于向所述接入点发送反馈信息，其中，所述反馈信息用于指示所述站点处于活跃状态。
  57. 根据权利要求56所述的站点，其特征在于，所述信标帧中还包括指示信息，所述指示信息包括位图，或偏移量信息。
  58. 根据权利要求57所述的站点，其特征在于，若所述指示信息为所述位图，所述处理器具体用于：
    根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
    若确定所述站点有下行数据待发送，根据所述位图中与所述站点对应的比特确定所述站点是否会被触发；其中，所述位图中的每个比特对应所述有下行数据待发送的且处于休眠状态的站点中的一个站点，用于指示所述一个站点是否会被触发；
    若确定所述站点会被触发，则转换为活跃状态。
  59. 根据权利要求57所述的站点，其特征在于，若所述指示信息为所述偏移量信息，所述偏移量信息包括起始站点的子标识和偏移量，所述处理器具体用于：
    根据所述业务标识映射信息确定所述站点是否有下行数据待发送；
    若确定所述站点有下行数据待发送，根据所述业务标识映射信息获取所述站点的子标识；
    根据所述起始站点的子标识和偏移量确定的会被触发的站点的标识范围；
    判断所述站点的子标识是否在所述标识范围内；
    若所述站点的子标识在所述标识范围内，则转换为活跃状态。
  60. 根据权利要求56至59任一项所述的站点，其特征在于，所述反馈 信息包括PS-POLL帧，或者缓冲区信息，或者上行数据。
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