CN106233790A - A kind of instruction method for message transmission to be received and device - Google Patents

Abstract

A method for transmitting an indication message to be received, comprising: an access point sending a broadcast message, the broadcast message including: bitmap information of an indication to be transmitted, first station group information to be received, and sending time information of a first trigger message, wherein, The first station group to be received corresponds to the first trigger message; the first trigger message is used to instruct the stations to be received in the first station group to be received that support the multi-user transmission mechanism to simultaneously send a waiting message to the access point receiving an indication message; the station to be received is a station indicating that there is downlink data in the TIM; the access point sends the first trigger message according to the sending time information of the first trigger message; the access Pointing to receiving a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism.

Description

A method and device for transmitting an indication message to be received technical field

The present invention relates to the field of communications, in particular to a method and device for transmitting an indication message to be received.

Background technique

In a wireless local area network, in order to save power, the station usually works in the power saving mode. When the station works in the power saving mode, its working state alternates between the Awake state and the Doze state according to certain rules. When in the Doze state, the power consumption of the station can be reduced to a very low level, but the messages sent by the access point cannot be received.

In order to enable the access point to send the arriving data to the station as soon as possible, the current Wireless Fidelity (WiFi, WIreless-FIdelity) 802.11 standard defines a data transmission indication map (TIM, Traffic Indication Map) downlink data transmission mechanism. According to the TIM mechanism, stations working in power-saving mode need to wake up periodically to receive the broadcast messages broadcast by the access point, and the access point indicates to the station whether there is cached data waiting through the TIM field in the broadcast message broadcast periodically sent to the site. Specifically, the TIM field is composed of some binary bits, and the serial number of each binary bit corresponds to the association identifier (AID, Association identifier) of the station. When a certain bit is set to 1, it means that the station with the corresponding AID has a cache at the access point When the station finds that there is buffered data in the access point through the broadcast message, it will send a power-saving poll (PS-Poll , Power Save poll) waits to receive the indication message, then wakes up, waits to receive the data sent by the access point, and enters the power-saving sleep state after receiving the data.

In the prior art, the access point can set multiple indication bits in the TIM to "1" and simultaneously indicate to multiple stations that there is cached data. The access point sends a PS-Poll message. The general process of the channel free competition mechanism is as follows: the station first monitors whether the channel is idle, and if the channel idle time exceeds a certain time (such as AIFS, arbitration interframe space, arbitration frame interval), the station then Start a backoff mechanism, that is, randomly select a backoff time value (in units of Time slot) between the set minimum backoff time and maximum backoff time, and start a countdown timing clock (in units of Time slot), when the channel is idle When the accumulative time reaches the backoff time value selected by the station, the countdown timing clock is reduced to 0, which triggers the station to send a PS-Poll message to the access point.

Through the above-mentioned channel free competition process, it can be seen that when two stations happen to randomly select the same backoff time value, the PS-Poll messages sent by the two stations at the same time will conflict, and in this case the stations will re-channel compete. Since the channel competition of multiple stations is carried out on the entire working channel of the access point, obviously, the collision of PS-Poll messages will inevitably cause the waste of the entire channel resource.

Contents of the invention

The embodiment of the present invention provides a method and device for transmitting an indication message to be received, which are used for multiple stations to synchronously send an indication message to be received to an access point.

The method for transmitting an indication message to be received provided in the first aspect of the embodiment of the present invention includes:

The access point sends a broadcast message, where the broadcast message includes: to-be-transmitted indication bitmap TIM information, first station group information to be received, and sending time information of a first trigger message, where the first station group to be received corresponds to the first A trigger message; the first trigger message is used to indicate that the to-be-received stations in the first to-be-received station group that support the multi-user transmission mechanism simultaneously send a to-be-received indication message to the access point; the to-be-received stations are Indicate a station with downlink data in the TIM;

The access point sends the first trigger message according to the sending time information of the first trigger message;

The access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism.

In the first possible implementation method of the first aspect, the information about the station group to be received includes:

The identification information of the first station to be received of the station group to be received, or the identification information of the station to be received at the end of the station group to be received.

In the second possible implementation method of the first aspect, the broadcast message further includes:

Information about the number of sites to be received included in the site group to be received.

In a third possible implementation method of the first aspect, the first trigger message includes:

The sending time information of the second trigger message, where the second trigger message is used to instruct the stations to be received that support the multi-user transmission mechanism in the second station group to be received to simultaneously send a to-be-received indication message to the access point.

In a fourth possible implementation of the first aspect,

The first trigger message includes: indication information of the first station group to be received;

The indication information of the first to-be-received station group includes: the first initial association identifier or the first to-be-received station point group identification information, the first initial association identification is the association identification of a station to be received with the smallest association identification in the first station group to be received;

and / or,

The first station group indication information to be received includes a station type indication bit table, each bit in the station type indication bit table corresponds to a station to be received in the first station group to be received, and the station type indication Each bit in the bit table is used to indicate whether the corresponding to-be-received station can send the to-be-received indication message.

With reference to the fourth possible implementation method of the first aspect, in a fifth possible implementation method, the indication information of the first station group to be received includes: indicating the channel of the indication message to be received corresponding to the first station group to be received Resource allocation information.

In combination with the first aspect and any one of the first to fifth possible implementation methods of the first aspect, in a sixth possible implementation method, the first trigger message includes:

The first channel resource indication information, the first channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource includes the channel resource for the first station group to be received The channel resource unit to which the to-be-received station sends the to-be-received indication message.

The method for transmitting an indication message to be received provided in the second aspect of the embodiment of the present invention includes:

The station to be received receives the broadcast message sent by the access point, and the broadcast message includes: TIM information of the indication bitmap to be transmitted, information of the first station group to be received, and sending time information of the first trigger message, wherein the first station to be received The group corresponds to the first trigger message; the first trigger message is used to instruct the to-be-received stations in the first to-be-received station group that support the multi-user transmission mechanism to simultaneously send a to-be-received indication message to the access point; The station to be received is a station indicated in the TIM that there is downlink data;

The station to be received wakes up when the trigger message corresponding to the station to be received is sent according to the sending time information of the first trigger message, and receives the trigger message corresponding to the station to be received;

The station to be received sends a to-be-received indication message to the access point according to the trigger message corresponding to the station to be received and using a multi-user transmission mechanism.

In the first possible implementation method of the second aspect, before receiving the trigger message corresponding to the station to be received, it includes:

The station to be received determines the station to be received according to the TIM and the information of the first station group to be received The station group to be received corresponding to the receiving station and the trigger message;

The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

The station to be received determines that the first trigger message is a trigger message corresponding to the station to be received, and sends a to-be-received indication message to the access point by using a multi-user transmission mechanism.

In a second possible implementation of the second aspect,

The broadcast message also includes: information about station groups to be received corresponding to each station group to be received except the first station group to be received;

Before receiving the trigger message corresponding to the station to be received, it includes:

The station to be received determines the station group to be received and the trigger message corresponding to the station to be received according to the TIM and the station group information to be received corresponding to each station group to be received;

The first trigger message includes: sending time information of the second trigger message, and the second trigger message is used to indicate that the stations to be received in the second group of stations to be received that support the multi-user transmission mechanism simultaneously send to the access point To receive the indication message;

According to the sending time information of the first trigger message, the station to be received wakes up when the trigger message corresponding to the station to be received is sent, and receives the trigger message corresponding to the station to be received, including:

The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

The station to be received judges whether the first trigger message is the trigger message corresponding to the station to be received, and if so, uses a multi-user transmission mechanism to send a message to be received to the access point; if not, the station to be received The station receives the trigger message corresponding to the second to-be-received station group according to the sending time information of the second trigger message included in the first trigger message.

In a third possible implementation of the second aspect,

The first trigger message includes: the indication information of the first station group to be received and the sending time information of the second trigger message, and the second trigger message is used to indicate that the station group supporting the multi-user transmission mechanism in the second station group to be received is to be received. The station simultaneously sends an indication message to be received to the access point;

According to the sending time information of the first trigger message, the station to be received wakes up when the trigger message corresponding to the station to be received is sent, and receives the trigger message corresponding to the station to be received, including:

The station to be received, according to the sending time information of the first trigger message, in the first trigger message Wake up when sending, and receive the first trigger message;

The station to be received determines whether the first trigger message includes the station group indication information corresponding to the station to be received, and if not, the station to be received according to the first trigger message included in the first trigger message 2. Sending time information of the trigger message, receiving the trigger message corresponding to the second to-be-received site group; if so, sending a to-be-received indication message to the access point by using a multi-user transmission mechanism.

In a fourth possible implementation of the second aspect,

The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resource allocation information indicating the to-be-received indication message corresponding to the first to-be-received site group;

The station to be received uses a multi-user transmission mechanism to send a message to be received to the access point according to the trigger message corresponding to the station to be received, including:

The station to be received determines the channel resource corresponding to the station to be received to send the indication message to be received according to the indication information of the first station group to be received;

The station to be received sends a to-be-received indication message to the access point by using the channel resource.

In a fifth possible implementation of the second aspect,

The first trigger message includes: first channel resource indication information, first station group indication information to be received;

The channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource includes information for the station to be received in the first station group to be received to send the indication message to be received channel resource unit;

The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received;

The to-be-received station sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station, including:

The station to be received determines, according to the first channel resource indication information and the first station group indication information to be received, the channel resource corresponding to the station to be received sending the indication message to be received;

The station to be received sends a to-be-received indication message to the access point by using the channel resource.

The method for transmitting an indication message to be received provided in the third aspect of the embodiment of the present invention includes:

The station to be received receives the broadcast message sent by the access point, and the broadcast message includes: an indication to be transmitted bitmap TIM information, at least two station group information to be received, and at least two station group information to be received The sending time information of the trigger message corresponding to the two station groups, wherein, the first station group to be received corresponds to the first trigger message; the first The trigger message is used to indicate that the to-be-received stations in the first to-be-received station group support the multi-user transmission mechanism to send a to-be-received indication message to the access point at the same time; the to-be-received stations indicate that there is a downlink data site;

The station to be received wakes up when the trigger message corresponding to the station to be received is sent according to the sending time information of the trigger message corresponding to the at least two station groups to be received, and receives the trigger message corresponding to the station to be received;

The station to be received sends a to-be-received indication message to the access point according to the trigger message corresponding to the station to be received and using a multi-user transmission mechanism.

In the first possible implementation of the third aspect,

The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resource allocation information indicating the to-be-received indication message corresponding to the first to-be-received site group;

The to-be-received station sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station, including:

The station to be received determines the channel resource corresponding to the station to be received to send the indication message to be received according to the indication information of the first station group to be received;

The station to be received sends a to-be-received indication message to the access point by using the channel resource.

In a second possible implementation of the third aspect,

The first trigger message includes: first channel resource indication information, first station group indication information to be received;

The channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource for sending the indication message to be received includes the station to be received for the first station group to be received Send the channel resource unit of the indication message to be received;

The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received;

The to-be-received station sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station, including:

The station to be received determines, according to the channel resource indication information and the first station group indication information to be received, the channel resource corresponding to the station to be received sending the indication message to be received;

The station to be received sends a to-be-received indication message to the access point by using the channel resource.

The access point provided by the fourth aspect of the embodiment of the present invention includes:

A sending unit, configured to send a broadcast message, the broadcast message including: to-be-transmitted indication bitmap TIM information, the first station group information to be received and the sending time information of the first trigger message, wherein the first station group to be received corresponds to the The first trigger message; the first trigger message is used to instruct the station to be received in the first station group to be received that supports the multi-user transmission mechanism to simultaneously send a message to be received to the access point; the to be received The station is a station indicated in the TIM that there is downlink data;

The sending unit is further configured to send the first trigger message according to the sending time information of the first trigger message;

The receiving unit is configured to receive a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism.

In the first possible implementation method of the fourth aspect, the station group information to be received includes:

The identification information of the first station to be received of the station group to be received, or the identification information of the station to be received at the end of the station group to be received.

In a second possible implementation method of the fourth aspect, the broadcast message further includes:

Information about the number of sites to be received included in the site group to be received.

In a third possible implementation method of the fourth aspect, the first trigger message includes:

The sending time information of the second trigger message, where the second trigger message is used to instruct the stations to be received that support the multi-user transmission mechanism in the second station group to be received to simultaneously send a to-be-received indication message to the access point.

In a fourth possible implementation of the fourth aspect,

The first trigger message includes: indication information of the first station group to be received;

The first to-be-received station group indication information includes: a first initial association identifier or first to-be-received station group identification information, and the first initial association identifier is a waiting group with the smallest association identifier in the first to-be-received station group. Receiving site's associated identification;

and / or,

The first station group indication information to be received includes: a station type indication bit table, and the station type Each bit in the indicating bit table corresponds to a station to be received in the first station group to be received, and each bit in the station type indicating bit table is used to indicate whether the corresponding station to be received can send the waiting station Receive an instruction message.

With reference to the fourth possible implementation method of the fourth aspect, in the fifth possible implementation method, the first station group indication information to be received further includes indicating the channel of the indication message to be received corresponding to the first station group to be received Resource allocation information.

In combination with the fourth aspect and any one of the first to fifth possible implementation methods of the fourth aspect, in a sixth possible implementation method, the first trigger message includes:

The first channel resource indication information, the first channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource includes the channel resource for the first station group to be received The channel resource unit to which the to-be-received station sends the to-be-received indication message.

The site provided by the fifth aspect of the embodiment of the present invention includes:

A message receiving unit, configured to receive a broadcast message sent by an access point, where the broadcast message includes: TIM information of an indication bitmap to be transmitted, first station group information to be received, and sending time information of a first trigger message, wherein the first The station group to be received corresponds to the first trigger message; the first trigger message is used to instruct the stations to be received in the first station group to be received that support the multi-user transmission mechanism to simultaneously send a to-be-received indication to the access point message; the station to be received is a station indicating that there is downlink data in the TIM;

The message receiving unit is further configured to wake up when its corresponding trigger message is sent according to the sending time information of the first trigger message, and receive its corresponding trigger message;

A message sending unit, configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station.

In the first possible implementation of the fifth aspect,

A first determining unit, configured to determine a station group to be received and a trigger message corresponding to the station to be received according to the TIM and the first station group information to be received.

In a second possible implementation of the fifth aspect,

The broadcast message further includes: information about station groups to be received corresponding to at least two station groups to be received other than the first station group to be received;

The site also includes:

The second determining unit is configured to determine the station group to be received corresponding to the station to be received and the trigger message according to the TIM and at least two station group information to be received corresponding to the station group to be received;

The station also includes: a first judging unit;

The first trigger message includes: sending time information of the second trigger message, and the second trigger message is used to indicate that the stations to be received in the second group of stations to be received that support the multi-user transmission mechanism simultaneously send to the access point To receive the indication message;

The first judging unit is configured to judge the first trigger after the message receiving unit wakes up when the first trigger message is sent and receives the first trigger message according to the sending time information of the first trigger message. Whether the message is a trigger message corresponding to the station to be received;

The message sending unit is specifically configured to, when the first trigger message is a trigger message corresponding to the station to be received, use a multi-user transmission mechanism to send the message to the access point according to the trigger message corresponding to the station to be received To receive the indication message;

The message receiving unit is further configured to receive the second trigger message to be received according to the sending time information of the second trigger message in the first trigger message when the first trigger message is not the trigger message corresponding to the station to be received. The trigger message corresponding to the site group.

In a third possible implementation of the fifth aspect,

The station also includes: a second judging unit;

The first trigger message includes: the indication information of the first station group to be received and the sending time information of the second trigger message, and the second trigger message is used to indicate that the station group supporting the multi-user transmission mechanism in the second station group to be received is to be received. The station simultaneously sends an indication message to be received to the access point;

The second judging unit is configured to judge the first trigger after the message receiving unit wakes up when the first trigger message is sent and receives the first trigger message according to the sending time information of the first trigger message. Whether the message includes the indication information of the station group to be received corresponding to the station to be received. The message sending unit is specifically configured to: when the first trigger message includes the indication information of the station group to be received corresponding to the station to be received Using a multi-user transmission mechanism to send an indication message to be received to the access point according to the trigger message corresponding to the station to be received;

The message receiving unit is further configured to, when the first trigger message does not include the indication information of the station group to be received corresponding to the station to be received, according to the sending time information of the second trigger message in the first trigger message , receiving a trigger message corresponding to the second station group to be received.

In a fourth possible implementation of the fifth aspect,

The station also includes: a first channel determination unit;

The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resource allocation information indicating the to-be-received indication message corresponding to the first to-be-received site group;

The first channel determining unit is used for the first station group indication information to be received to determine the channel resource corresponding to the station to be received sending the indication message to be received,

The message sending unit is specifically configured to: use the channel resource determined by the first channel determining unit to send a to-be-received indication message to the access point.

In a fifth possible implementation of the fifth aspect,

The station also includes: a second channel determination unit;

The first trigger message includes: first channel resource indication information, first station group indication information to be received;

The first channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource for sending the indication message to be received includes the channel resource for the first station group to be received The receiving station sends the channel resource unit of the indication message to be received;

The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received;

The second channel determining unit determines, according to the first channel resource indication information and the first to-be-received station group indication information, the channel resource corresponding to the to-be-received station sending the to-be-received indication message;

The message sending unit is specifically configured to: use the channel resource determined by the second channel determining unit, and use a multi-user transmission mechanism to send a to-be-received indication message to the access point.

The site provided by the sixth aspect of the embodiment of the present invention includes:

The message receiving unit is used to receive the broadcast message sent by the access point, the broadcast message includes: the information to be transmitted indicating bitmap TIM information of at least two station groups to be received, and the sending of trigger messages corresponding to at least two station groups to be received Time information, wherein, the first station group to be received corresponds to the first trigger message; the first trigger message is used to indicate that the stations to be received in the first station group to be received that support the multi-user transmission mechanism simultaneously send the The access point sends an indication message to be received; the station to be received is at A station with downlink data is indicated in the TIM;

The message receiving unit is further configured to wake up when the trigger message corresponding to the station to be received is sent according to the sending time information of the trigger message corresponding to the at least two station groups to be received, and receive the message corresponding to the station to be received trigger message;

A message sending unit, configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the station to be received.

In the first possible implementation of the sixth aspect,

The station also includes: a first channel determination unit;

The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resource allocation information indicating the to-be-received indication message corresponding to the first to-be-received site group;

The first channel determination unit is configured to determine, according to the indication information of the first station group to be received, the channel resources corresponding to the station to be received sending the indication message to be received;

The message sending unit is specifically configured to: use the channel resource determined by the first channel determining unit, and use a multi-user transmission mechanism to send a to-be-received indication message to the access point.

In a second possible implementation of the sixth aspect,

The station also includes: a second channel determination unit;

The first trigger message includes: first channel resource indication information, first station group indication information to be received;

The first channel resource indication information is the indication information of the channel resource of the first station group to be received to send the indication message to be received, and the channel resource for sending the indication message to be received includes the channel resource to be received for the first station group to be received The station sends the channel resource unit of the indication message to be received;

The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received;

The second channel determination unit determines the channel resource corresponding to the station to be received sending the indication message to be received according to the channel resource indication information and the first station group indication information to be received;

The message sending unit is specifically configured to: use the channel resource determined by the second channel determining unit, and use a multi-user transmission mechanism to send a to-be-received indication message to the access point.

The access point provided by the seventh aspect of the embodiment of the present invention includes:

transmitters, receivers and processors;

The processor is configured to send a broadcast message through the transmitter, and the broadcast message includes: to-be-transmitted indication bitmap TIM information, first to-be-received site group information, and sending time information of a first trigger message, wherein the first to-be-transmitted The receiving station group corresponds to the first trigger message; the first trigger message is used to instruct the station to be received in the first station group to be received that supports the multi-user transmission mechanism to simultaneously send a to-be-received indication message to the access point ; The station to be received is a station indicating downlink data in the TIM; and sending the first trigger message according to the sending time information of the first trigger message;

The processor is further configured to receive, through the receiver, a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism.

The station provided by the eighth aspect of the embodiment of the present invention includes: a transmitter, a receiver, and a processor;

The processor is configured to receive, through the receiver, a broadcast message sent by the access point, where the broadcast message includes: to-be-transmitted indication bitmap TIM information, first station group information to be received, and sending time information of the first trigger message, Wherein, the first station group to be received corresponds to the first trigger message; the first trigger message is used to indicate that the stations to be received in the first station group to be received that support the multi-user transmission mechanism simultaneously send a message to the access point Sending an indication message to be received; the station to be received is a station indicating that there is downlink data in the TIM; and according to the sending time information of the first trigger message, it wakes up when its corresponding trigger message is sent, and receives its own The corresponding trigger message;

The processor is configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station through the transmitter.

The station provided by the ninth aspect of the embodiment of the present invention includes: a transmitter, a receiver, and a processor;

The processor is configured to receive, through the receiver, a broadcast message sent by the access point, where the broadcast message includes: to-be-transmitted indication bitmap TIM information, at least two station group information to be received, and at least two station group correspondences to be received The sending time information of the trigger message, wherein, the first station group to be received corresponds to the first trigger message; the first trigger message is used to indicate that the station group supporting the multi-user transmission mechanism in the first station group to be received is to be received The station sends an indication message to be received to the access point at the same time; the station to be received is a station indicating that there is downlink data in the TIM; and according to the sending time information of its corresponding trigger message, in its corresponding trigger message Wake up when sending, and receive its corresponding trigger message;

The processor is configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station through the transmitter.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the frequency spectrum of the wireless channel working between the access point and the station is divided into multiple sub-channels, and when the access point sends a broadcast message to the station, the broadcast message includes the information of the first station group to be received and the sending time information of the first trigger message; the information of the first station group to be received is used to indicate the grouping information of the stations to be received in the first station group to be received, wherein a subchannel in the wireless channel spectrum can be A station to be received that supports multiple user mechanisms in a station group to be received is used. Therefore, each station that supports a multi-user transmission mechanism in the station group to be received can select one of the subchannels to send the indication message to be received, and then An inpoint can receive messages from multiple stations at the same time.

After the first station group to be received at the access point sends the first trigger message, each station in the first station group to be received that supports the multi-user transmission mechanism and the multi-user transmission mechanism will, according to the indication of the first trigger message, unify Send a to-be-received indication message to the access point. In the embodiment of the present invention, the access point can uniformly receive the to-be-received indication messages simultaneously sent by multiple stations through the multi-user transmission mechanism, thereby avoiding the waste of channel resources caused by message conflicts in the process of channel free competition.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 2 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 3 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 4 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 5 is a schematic diagram of a data structure of a broadcast message in an embodiment of the present invention;

FIG. 6 is a schematic diagram of a data structure of a trigger message in an embodiment of the present invention;

FIG. 7 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 8 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 9 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 10 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 11 is another schematic flowchart of a method for transmitting an indication message to be received in an embodiment of the present invention;

FIG. 12 is a schematic diagram of another data structure of a trigger message in an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of an access point in an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a station in an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of a computer based on a transmission method of an indication message to be received in an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The embodiment of the present invention is applied to a scenario where an access point transmits downlink data to a station in a wireless local area network. In the scenario where the wireless local area network works, the station is in a sleep state most of the time, the access point and the station agree on a time, and the station wakes up periodically to receive the broadcast message sent by the access point. The broadcast message contains the TIM field, specifically Yes, the TIM field is composed of some binary bits. The serial number of each binary bit corresponds to the AID of the station to be received. When a certain bit is set to 1, it means that the station with the corresponding AID has cached data in the access point and needs to wake up and download the cached data. When the station receives the broadcast message and finds that the indication bit corresponding to itself in the TIM field of the broadcast message is set to 1, the station needs to send an indication message to be received to the access point to indicate that the station is currently in In the awake state, the buffered data can be received, and the access point is requested to allocate channel resources for sending the buffered data, and the downlink buffered data can be sent on the corresponding channel resources.

In practical applications, since the access point will cache data for multiple stations at the same time, there will be a need for multiple stations to send indication messages to be received to the access point. For the problem of channel resource allocation for a station to send an indication message to be received, for details, please refer to the following embodiments.

An embodiment of the method for transmitting an indication message to be received in the present invention, the method may include: the access point sends a broadcast message, and the broadcast message includes: the indication bitmap TIM information to be transmitted, the first Site group information and sending time information of a first trigger message, wherein the first site group to be received corresponds to the first trigger message; the first trigger message is used to indicate that multiple users are supported in the first site group to be received The station to be received in the transmission mechanism sends a message to be received to the access point at the same time; the station to be received is a station indicated in the TIM to have downlink data; the access point according to the first trigger message Sending time information to send the first trigger message; the access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism .

It should be noted that, in this embodiment of the present invention, there is a one-to-one correspondence between the site groups to be received and the trigger messages, that is, the first site group to be received corresponds to the first trigger message, and the first trigger message is used to indicate that the first In the group of stations to be received, the stations to be received that support the multi-user transmission mechanism simultaneously send a message to be received to the access point; similarly, the second group of stations to be received corresponds to the second trigger message, and the second trigger message is used to Instructing the stations to be received in the second group of stations to be received that support the multi-user transmission mechanism to simultaneously send a to-be-received indication message to the access point, and so on.

And, the second station group to be received may refer to the next station group to be received of the first station group to be received, or any station group to be received except the first station group to be received, where Specific not limited.

Exemplarily, the first trigger message may include: indication information of the first station group to be received, or identification information of the first station group to be received; the first initial association identifier is the smallest association identifier in the first station group to be received An associated ID of a site to be received. Similarly, it can be understood that the indication information of the site group to be received or the identification information of the site group to be received contained in any trigger message is related to the information carrying the indication information of the site group to be received or the identification information of the site group to be received corresponding to the trigger message (for example, the second trigger message includes indication information of the second to-be-received station group).

Further, the indication information of the first station group to be received includes: allocation information indicating the channel resource of the indication message to be received corresponding to the first station group to be received. Similarly, the indication information of the second station group to be received includes allocation information indicating the channel resources of the indication message to be received corresponding to the second station group to be received, and so on.

Further, the first trigger message further includes: first channel resource indication information, the first channel resource indication information is the indication information of the channel resource on which the first station group to be received sends the indication message to be received, and the channel resource Including the station to be received for the first group of stations to be received sends a waiting The channel resource unit receiving the indication message. Similarly, the second trigger message includes second channel resource indication information, and the second channel resource indication information is the indication information of the channel resource for which the second station group to be received sends the indication message to be received, and so on.

Referring to Fig. 1, an embodiment of the method for transmitting an indication message to be received in the embodiment of the present invention includes:

101. The access point sends a broadcast message;

The access point sends a broadcast message to the station to be received, and the broadcast message includes: a transmission indication bitmap, first station group information to be received, and sending time information of the first trigger message; the trigger message is used to indicate the same station to be received The stations to be received in the group simultaneously send a to-be-received indication message to the access point. The station to be received is a station indicated in the TIM that there is downlink data.

Specifically, the first trigger message is a trigger message corresponding to the first station group to be received. Further, in this embodiment of the present invention, the second trigger message is a trigger message corresponding to the second station group to be received, and so on.

Optionally, the information of the site group to be received may be: the identification information of the first site to be received in the site group to be received, or the identification information of the site to be received at the end of the site group to be received, and the number of sites contained in the site group to be received , the identification of the site to be received includes but not limited to: the associated identification of the site to be received, the sequence number of "1" in the TIM corresponding to the site to be received, the medium access control (MAC, Medium Access Control) of the site to be received One or more of addresses, etc.; the station quantity information contained in the station group to be received specifically includes, a quantity can be used to indicate that each station group to be received contains the same number of stations, and at this time, the station group to be received contains the same number of stations. The number of sites to be received is the indicated number, and the number of sites to be received contained in each site group to be received can also be indicated for each site group to be received. At this time, the number of sites to be received in each group can be the same or can be different.

The sending time information is used to indicate the time when the access point sends the corresponding trigger message.

In the embodiment of the present invention, the frequency spectrum of the wireless channel working between the access point and the station to be received is divided into several orthogonal sub-carriers, and one or more sub-carriers are formed into a sub-channel. The time required for the station to be received to send the indication message to be received on an uplink sub-channel, together with the sub-channel is called a channel resource unit for sending the indication message to be received (that is, including the frequency spectrum corresponding to the sub-channel and the time required for sending the message) time, etc.).

Specifically, the broadcast message may be a Beacon (Beacon) message in an actual application, or a message in other formats, which is not specifically limited here.

Specifically, the TIM is used to indicate whether each station currently has data cached in the access point; further, the TIM can be a binary sequence, and each bit in the binary sequence corresponds to the AID of each station, When one of the binary numbers is set to "1", it means that the corresponding station has data cached in the access point; when one of the binary numbers is set to "0", it means that the corresponding station has no data cached in the access point. In the embodiment of the present invention, the station whose flag bit in the TIM is set to "1" is the station to be received.

Specifically, the first to-be-received station group information is used to indicate the grouping information of the to-be-received stations in the first to-be-received station group, wherein, one sub-channel in the wireless channel spectrum can be supported by one to-be-received station group A to-be-received station using multiple user transmission mechanisms (such as OFDMA transmission mechanism), therefore, each station in the to-be-received station group that supports the multi-user transmission mechanism can select one of the subchannels to indicate to be received For message sending, the access point can use the multi-user transmission mechanism to simultaneously receive messages sent by multiple stations that support the multi-user transmission mechanism. Multi-User Transport Mechanism

Specifically, the broadcast message includes at least the information of the first station group to be received and the sending time information of the corresponding trigger message, and the trigger message is used to indicate that the stations to be received in the same station group to be received simultaneously send to the access point to send an indication message to be received, wherein each site group to be received corresponds to a trigger message, and the first trigger message is a trigger message corresponding to the first site group to be received. Optionally, the broadcast message may include: information of at least one other station group to be received except the first station group to be received, and sending time information of a corresponding trigger message.

Specifically, the indication message to be received is an indication message sent by the station to be received to the access point, which is used to indicate that the station to be received is currently in an awake state and can receive downlink buffered data, and requests the access point to allocate a channel for transmitting downlink data resources, and then receive downlink data on downlink channel resources. Optionally, the indication message to be received may be a PS-Poll message.

Specifically, the multi-user transmission mechanism refers to a frequency division multiple access (such as orthogonal frequency division multiple access) or multi-user (multiple input multiple output) transmission mode on a certain spectrum resource for multiple receiving stations, Communicate with one access point at the same time. The multi-user transmission mechanism includes but is not limited to: Orthogonal Frequency Division Multiple Access (OFDMA, Orthogonal Frequency Division Multiple Access) mechanism, multiple-input multiple-output multi-user transmission mechanism (MU MIMO, Multi User MIMO (Multi-Input Multi-Output )).

102. The access point sends the first trigger message according to the sending time information of the first trigger message;

Specifically, after the station receives the broadcast message, if it finds its own station through the TIM If there is downlink buffer data to be transmitted, and it is known that its own station belongs to the first station group through the information of the first station group to be received, it will be awake at the time when the first trigger message is sent, so as to receive the first trigger message. Optionally, if the station finds that its own station has no downlink cached data to transmit through the TIM, it may not perform processing; if the station learns that its own station belongs to a non-first station group through the information of the first station group to be received, it needs to Receive the trigger message corresponding to the station group to be received that you belong to. .

Specifically, the trigger message may be a trigger message, or a message in other formats, which is not specifically limited here. Optionally, the trigger message may include: identification information of the trigger message, information of the station group to be received corresponding to the trigger message, sending time information of the next trigger message, and one or more information of channel resource indication information; It depends on the actual situation and is not limited here.

In the embodiment of the present invention, before the access point sends the broadcast message, the sending time information of each trigger message can be set according to actual needs; and, if the situation changes during the actual application process (for example, time delay), it is also possible to dynamically adjust the sending time information of unsent trigger messages. Therefore, in the actual application process, only the sending time information of the first trigger message can be set in the broadcast message, or the sending time information of the trigger message corresponding to each station group to be received; The sending time information of the next trigger message may or may not be included, depending on the actual situation, which is not limited here. Exemplarily, when the broadcast message includes the sending time information of each trigger message, the trigger message may not include the sending time information of the next trigger message; when the broadcast message does not include the sending time information of each trigger message, The trigger message may include sending time information of the next trigger message.

103. The access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism;

Specifically, after the station to be received receives the first trigger message, the time to send the indication message to be received is determined according to the first trigger message. Optionally, in practical applications, the stations to be received may pre-arrange a duration with the access point, such as the time of the short frame interval. After receiving the first trigger message and after the agreed duration, each station to be received Simultaneously, a to-be-received indication message is sent to the access point. Optionally, the first trigger message may also include sending indication information of an indication message to be received, and each station to be received determines the time to uniformly send and receive the indication message according to the indication of the indication information of the indication message to be received, Exemplarily, the sending indication information of the indication message to be received is At 14:15:01, after receiving the first trigger message, the stations to be received in each of the first station groups to be received send the indication message to be received to the access point at the time of 14:15:01 seconds .

104. The access point sends resource allocation information to the station to be received.

The access point sends resource allocation information to the station to be received, and the allocation message is used to indicate to the station to receive the channel resources for downloading the cached data, so that the station to be received downloads the cached data in the channel resource indicated by the allocation message.

After the first station group to be received at the access point sends the first trigger message, each station in the first station group to be received that supports the multi-user transmission mechanism multi-user transmission mechanism will, according to the indication of the first trigger message, simultaneously Send a to-be-received indication message to the access point. In the embodiment of the present invention, the access point can uniformly receive the to-be-received indication messages simultaneously sent by multiple stations through the multi-user machine transmission system, thereby avoiding the waste of channel resources caused by message conflicts in the process of channel free competition.

On the access point side, it is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is only the information of the first station group to be received, and the information included in the broadcast message The sending time information of the trigger message only has the sending time information of the first trigger message, please refer to FIG. 2, another embodiment of the transmission method of the indication message to be received in the embodiment of the present invention includes:

201. The access point sends a broadcast message;

When data of multiple stations to be received is cached in the access point, the access point sends a broadcast message, and the broadcast message includes: transmission indication bitmap, first station group information to be received, and sending time information of the first trigger message The trigger message is used to instruct the stations to be received in the same group of stations to be received to simultaneously send a to-be-received indication message to the access point, and the first trigger message is a trigger message corresponding to the first station group to be received. The station to be received is a station indicated in the TIM that there is downlink data.

202. The access point sends the first trigger message according to the sending time information of the first trigger message;

The first trigger message includes: sending time information of the trigger message corresponding to the second station group to be received.

Specifically, after the station receives the broadcast message, if it finds that its own station has downlink buffer data to be transmitted through the TIM, and learns that its own station belongs to the first station group through the information of the first station group to be received, then in The sending time of the first trigger message is in an awake state, so as to receive the first trigger message. Optionally, if the station finds that its own station has no downlink through the TIM If the cached data needs to be transmitted, it does not need to be processed.

If the station confirms that it is a station to be received through the TIM, and knows that its own station belongs to a non-first station group through the information of the first station group to be received, since the broadcast message does not include the station to be received corresponding to its own station Therefore, the station to be received needs to wake up when the second trigger message is sent according to the sending time information of the second trigger message included in the first trigger message, and receive the second trigger message.

Specifically, the trigger message may be a trigger message, or a message in other formats, which is not specifically limited here. Optionally, the trigger message may include: the identification information of the trigger message, the indication information of the station group to be received corresponding to the trigger message, the sending time information of the next trigger message, and one or more information in the channel resource indication information; It depends on the actual situation and is not limited here.

Optionally, the trigger message may further include: channel resource indication information; the channel resource indication information is indication information of a channel resource corresponding to the trigger message to send an indication message to be received by a station group to be received, the The channel resource for sending the to-be-received indication message includes at least one channel resource unit used for the to-be-received station to send the to-be-received indication message. It can be understood that, in practical applications, if the access point and the station to be received have agreed on channel resources in advance, the trigger message may not include channel resource indication information.

203. The access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Specifically, if the access point has agreed on a channel resource with the station to be received, the station to be received determines the channel resource corresponding to the station to be received to send the indication message to be received according to the preset channel resource and the indication information of the station group to be received. channel resources, and then use the channel resources to send a to-be-received indication message to the access point.

Optionally, if the access point and the station to be received have not agreed on channel resources, the trigger message will include channel resource indication information; the station to be received determines according to the channel resource indication information and the station group indication information to be received The station to be received sends the channel resource corresponding to the indication message to be received, and then uses the channel resource to send the indication message to be received to the access point.

204. The access point sends resource allocation information to the stations to be received in the first station group to be received;

The access point sends resource allocation information to the to-be-received stations in the first to-be-received station group, and the allocation information is used to indicate to the to-be-received stations the channel resources for downloading the cached data, so that the to-be-received stations can be on the channel indicated by the allocation message Download the cached data from resources.

205. The access point sends a second trigger message;

It can be understood that step 205 occurs after step 202, but has no strict timing relationship with steps 203 and 204.

Specifically, the second trigger message may include: indication information of the station group to be received, and sending time information of the trigger message corresponding to the second station group to be received.

The indication information of the station group to be received includes: initial association identifier or identification information of the station group to be received, and the initial association identifier is the association identifier of the station to be received with the smallest association identifier among the stations to be received corresponding to the trigger message ; Further, it can also include information on the number of sites to be received in the site group to be received; optionally, the number of sites to be received in each site group to be received can be the same or different, that is, the information on the number of sites to be received is specific Including, a number can be used to indicate that each site group to be received contains the same number of sites, and at this time, the number of sites to be received contained in each site group to be received is the indicated number, and each site group to be received can also be separately Indicates information about the number of stations to be received contained in each station group to be received. At this time, the number of stations to be received in each group of stations to be received may be the same or different.

and / or,

The station group indication information to be received includes: a station type indication bit table, each bit in the station type indication bit table corresponds to a station to be received in the station group to be received corresponding to the trigger message, and the station type Each bit in the indication bit table is used to indicate whether the corresponding station to be received can send the indication message to be received.

Exemplarily, after the station to be received receives the trigger message:

1) The station to be received judges whether the currently received trigger message includes the station group indication information to be received corresponding to the station to be received, if not, then perform step 2); if so, then perform step 3);

2) The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message, and performs step 1);

3) The station to be received determines that the currently received trigger message is the trigger message corresponding to the station to be received.

206. The access point receives a to-be-received indication message sent by at least one to-be-received station in the second to-be-received station group according to the second trigger message and using a multi-user transmission mechanism;

Optionally, if there are multiple station groups to be received, the access point may continue to send the trigger message and receive the to-be-received indication message according to the above method.

207. The access point sends resource allocation information to the stations to be received in the second station group to be received.

The access point sends resource allocation information to the stations to be received in the second group of stations to be received, and the allocation message is used to indicate to the stations to be received the channel resources for downloading the cached data, so that the stations to be received are on the channel indicated by the allocation message Download the cached data from resources.

On the station side, it is assumed that each station to be received in the station group to be received supports the multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is only the information of the first station group to be received, and the trigger message included in the broadcast message The sending time information only has the sending time information of the first trigger message, please refer to FIG. 3, another embodiment of the transmission method of the indication message to be received in the embodiment of the present invention includes:

301. The station to be received receives the broadcast message sent by the access point;

The station to be received receives the broadcast message sent by the access point, the broadcast message includes: transmission indication bitmap, first station group information to be received, and sending time information of the first trigger message, the trigger message is used to indicate the same station to be received The stations to be received in the station group simultaneously send a to-be-received indication message to the access point, and the first trigger message is a trigger message corresponding to the first station group to be received. The station to be received is a station indicated in the TIM that there is downlink data.

Specifically, the first trigger message is a trigger message corresponding to the first station group to be received. Further, in this embodiment of the present invention, the second trigger message is a trigger message corresponding to the second station group to be received, and so on.

Exemplarily, after receiving the broadcast message, the station checks the TIM in the broadcast message. If the binary number corresponding to the station in the TIM is "0", the station does not need to process it; If the binary number is "1", then it is confirmed that the station is the station to be received, and step 302 is executed.

302. The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

Specifically, the first trigger message includes: sending a trigger message corresponding to the second station group to be received Send time information.

Specifically, after the station receives the broadcast message, if it finds that its own station has downlink buffer data to be transmitted through the TIM, and learns that its own station belongs to the first station group through the information of the first station group to be received, then in The sending time of the first trigger message is in an awake state, so as to receive the first trigger message. Optionally, if the station finds through the TIM that its own station has no downlink buffer data to be transmitted, no processing may be performed.

If the station confirms that it is a station to be received through the TIM, and knows that its own station belongs to a non-first station group through the information of the first station group to be received, since the broadcast message does not include the station to be received corresponding to its own station Therefore, the station to be received needs to wake up when the second trigger message is sent according to the sending time information of the second trigger message included in the first trigger message, and receive the second trigger message.

Specifically, the trigger message may be a trigger message, or a message in other formats, which is not specifically limited here. Optionally, the trigger message may include: the identification information of the trigger message, the indication information of the station group to be received corresponding to the trigger message, the sending time information of the next trigger message, and one or more information in the channel resource indication information; It depends on the actual situation and is not limited here.

Optionally, the trigger message may further include: channel resource indication information; the channel resource indication information is indication information of a channel resource corresponding to the trigger message to send an indication message to be received by a station group to be received, the The channel resource for sending the to-be-received indication message includes at least one channel resource unit used for the to-be-received station to send the to-be-received indication message. It can be understood that, in practical applications, if the access point and the station to be received have agreed on channel resources in advance, the trigger message may not include channel resource indication information.

303. The station to be received judges whether the currently received trigger message includes the station group indication information corresponding to the station to be received;

The station to be received determines whether the currently received trigger message includes the station group indication information to be received corresponding to the station to be received, if not, then execute step 304; if so, the station to be received determines that the currently received trigger message is the Step 305 is executed to receive the trigger message corresponding to the station.

In practical applications, if the broadcast message does not include the station group information to be received corresponding to each station group to be received, and does not include the sending time of the trigger message corresponding to each station group to be received; then the corresponding trigger message sent by the access point will include the corresponding to-be-received station group indication information and the second to-be-received The sending time information of the trigger message corresponding to the receiving site group.

The indication information of the station group to be received includes: initial association identifier or identification information of the station group to be received, and the initial association identifier is the association identifier of the station to be received with the smallest association identifier among the stations to be received corresponding to the trigger message ; Further, it may also include information on the number of sites to be received in the site group to be received; optionally, the number of sites to be received in each site group to be received may be the same or not necessarily the same, that is, the number of sites to be received , can contain only one number to indicate that each station group to be received contains the same number of stations, or contain multiple numbers, corresponding to different station numbers contained in multiple station groups to be received.

and / or,

The indication information of the station group to be received includes: a station type indication bit table, each bit in the station type indication bit table corresponds to a station to be received in the station group to be received corresponding to the trigger message, and the station type Each bit in the indication bit table is used to indicate whether the corresponding station to be received can send the indication message to be received.

304. The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message;

The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message, and performs step 303 .

305. The station to be received sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the station to be received;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Specifically, if the access point has agreed on a channel resource with the station to be received, the station to be received determines the channel resource corresponding to the station to be received to send the indication message to be received according to the preset channel resource and the indication information of the station group to be received. channel resources, and then use the channel resources to send a to-be-received indication message to the access point.

Optionally, if the access point and the station to be received have not agreed on channel resources, the trigger message will include channel resource indication information; the station to be received determines according to the channel resource indication information and the station group indication information to be received The station to be received sends the channel information corresponding to the indication message to be received source, and then use the channel resource to send a to-be-received indication message to the access point.

306. The station to be received receives the resource allocation information sent by the access point.

The station to be received receives the resource allocation information sent by the access point, and downloads the cached data in the channel resource indicated by the allocation message.

On the access point side, it is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the station group information to be received included in the broadcast message is the station group information to be received corresponding to each station group to be received, broadcast The sending time information of the trigger message included in the message is the sending time information of the trigger message corresponding to each station group to be received. Please refer to FIG. 4. Another embodiment of the transmission method of the indication message to be received in the embodiment of the present invention includes:

401. The access point sends a broadcast message;

When data of multiple stations to be received is buffered in the access point, the access point sends a broadcast message, the broadcast message includes: transmission indication bitmap, station group information to be received corresponding to each station group to be received, each station group to be received The sending time information of the trigger message corresponding to the station group, the trigger message is used to indicate that the stations to be received in the same station group to be received send the indication message to be received to the access point at the same time, and the first trigger message is the first to be received Receive the trigger message corresponding to the site group. The station to be received is a station indicated in the TIM that there is downlink data.

Exemplarily, the message structure of the broadcast message can refer to FIG. 5. In FIG. 5, the TIM is a multi-bit binary sequence, and each bit in the binary sequence corresponds to the AID of each station to be received, when When a binary number is set to "1", it means that the corresponding station to be received has data cached in the access point; when one of the binary numbers is set to "0", it means that the corresponding station to be received has no data cached in the access point point. Trigger IE (Information elements) is the information element of the trigger message. The Trigger IE includes the information of the station group to be received (Group1, Group2, etc. in the figure) and the sending time information of the trigger message of the corresponding station group to be received (as shown in the figure) Trigger time1, Trigger time2, etc.), in the station group information to be received, Start AID1 represents the AID of the station to be received with the smallest AID in the first station group to be received corresponding to the first trigger message (or the STA station group to be received contains The serial number of "1" in the TIM corresponding to the STA with the smallest AID, that is, the number "1" in the TIM), Num1 indicates the number of stations to be received contained in the first station group to be received, corresponding to Start AID1 in the TIM The number of "1" starting with "1", and so on for the information of multiple trigger messages. It should be noted that, Start AID1 can also represent the largest AID in the first station group to be received corresponding to the first trigger message The AID of the station to be received (that is, the last receiving station) (or the serial number of "1" in the TIM corresponding to the STA with the largest AID included in the station group of STAs to be received, that is, the number "1" in the TIM).

402. The access point sends the first trigger message according to the sending time information of the first trigger message;

Optionally, the first trigger message may include: sending time information of the trigger message corresponding to the second station group to be received (optionally, the time precision of the sending time information included in the trigger message may be greater than that included in the broadcast message The time precision of sending time information).

After receiving the broadcast message, the station checks the TIM in the broadcast message. If the binary number corresponding to the station in the TIM is "0", the station does not need to process it; if the binary number corresponding to the station in the TIM is " 1", then the station is the station to be received.

Further, the station to be received determines the station group to be received corresponding to the station to be received and the sending time of the trigger message according to the corresponding station group information to be received included in the broadcast message, and prepares to send the instruction message to be received .

After the station to be received of the first station group to be received determines that there is downlink cached data to be transmitted, it checks the information of the first station group to be received in the broadcast message, and confirms that its own station belongs to the For the first station group to be received, the corresponding trigger message is the first trigger message, and the stations to be received in the first station group to be received are in an awake state when the first trigger message is sent.

Specifically, the trigger message may be a trigger message, or a message in other formats, which is not specifically limited here. Optionally, the trigger message may include: the identification information of the trigger message, the indication information of the station group to be received corresponding to the trigger message, the sending time information of the next trigger message, and one or more information in the channel resource indication information; It depends on the actual situation and is not limited here.

In the embodiment of the present invention, before the access point sends the broadcast message, the sending time information of each trigger message can be set according to actual needs; and, if the situation changes during the actual application process (for example, time delay), it is also possible to dynamically adjust the sending time information of unsent trigger messages. Therefore, in the actual application process, the sending time information of the first trigger message, or the sending time information of the trigger message corresponding to each station group to be received may be set in the broadcast message.

Exemplary, the message structure of described trigger message can refer to Fig. 6, and in Fig. 6, Trigger ID is the sign of trigger message (such as, the first trigger message, corresponds to the station to be received of the first station group to be received) ; Optionally, Group1 is the indication information of the site group to be received corresponding to the first site group to be received, Start AID1 indicates the AID of the station to be received with the smallest AID in the first station group to be received corresponding to the first trigger message (or the sequence number of "1" in the TIM corresponding to the STA with the smallest AID included in the station group to be received by the STA, that is The number "1" in TIM), Num1 indicates the number of stations to be received contained in the first station group to be received, corresponding to the number of "1" starting from "1" corresponding to Start AID1 in TIM, multiple triggers The information at the time of the message is analogized like this. Optionally, Next Trigger time refers to the sending time information of the next trigger message. Optionally, the PS-Poll resource is channel resource indication information, and the channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the transmission to be received The channel resource of the indication message includes at least one channel resource unit for the station to be received to send the indication message to be received. In practical applications, the channel resource to receive the indication message can be agreed in advance by the access point and the station to receive, therefore, the trigger message does not necessarily include PS-Poll resource.

403. The access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Exemplarily, the to-be-received stations of the first to-be-received station group may determine channel resources for sending the to-be-received indication message according to the to-be-received station group indication information carried in the first trigger message. Optional, there are two ways:

1. If the access point and the station to be received have agreed in advance on the channel resource (the frequency band of the entire spectrum resource, and the division method of the entire spectrum resource) of the indication message to be received, the station to be received in the first group of stations to be received is based on the Start AID1 and the corresponding identification bit of the self-site in the TIM determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station-to-be-received group, and correspondingly, the channel resources corresponding to the self-site are in the entire frequency spectrum In the Xth frequency band in the resource;

2. If the access point and the station to be received have not agreed on the channel resource of the indication message to be received, the station to be received in the first station group to be received knows the channel resource of the indication message to be received through the channel resource indication information in the first trigger message , and then according to Start AID1 and the corresponding identification bit of the self-site in the TIM, determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station group to be received, and correspondingly, the channel resources corresponding to the self-site are in In the Xth frequency band in the entire spectrum resource.

404. The access point sends resource allocation information to the stations to be received in the first station group to be received.

The access point sends resource allocation information to the to-be-received stations in the first to-be-received station group, and the allocation message is used to indicate to the to-be-received stations the channel resources for downloading the cached data, so that the to-be-received stations can be on the channel indicated by the allocation message Download the cached data from resources.

On the station side, it is assumed that at least two stations to be received in the station group to be received support the multi-user transmission mechanism, and the station group information to be received included in the broadcast message is the station group information to be received corresponding to each station group to be received, broadcast The sending time information of the trigger message included in the message is the sending time information of the trigger message corresponding to at least two station groups to be received. Please refer to FIG. 7. Another embodiment of the transmission method of the indication message to be received in the embodiment of the present invention includes:

701. The station to be received receives the broadcast message sent by the access point;

The station to be received receives the broadcast message sent by the access point, and the broadcast message includes: a transmission indication bitmap, at least two station group information to be received corresponding to the station group to be received, and at least two trigger messages corresponding to the station group to be received Sending time information, the trigger message is used to indicate that the stations to be received in the same station group to be received simultaneously send a message to be received to the access point, and the first trigger message is a trigger message corresponding to the first station group to be received . The station to be received is a station indicated in the TIM that there is downlink data.

For example, the message structure of the broadcast message may refer to FIG. 5 .

Exemplarily, after receiving the broadcast message, the station checks the TIM in the broadcast message. If the binary number corresponding to the station in the TIM is "0", the station does not need to process it; If the binary value is "1", then it is confirmed that the station is the station to be received, and step 702 is executed.

702. The station to be received confirms the station group to be received and the corresponding trigger message to which the station belongs according to the TIM and the information of each station group to be received;

If the site group to be received where the site to be received is located is the first site group to be received, then determine the site group to be received corresponding to the site to be received and the sending time of the trigger message according to the information of the first site group to be received.

If the station group to be received where the station to be received is located is not the first station group to be received, and the broadcast message also includes: the station group to be received corresponding to each station group to be received except the first station group to be received For the site group information, determine the site group to be received and the trigger message corresponding to the site group to be received according to the site group information to be received corresponding to each site group to be received.

703. The station to be received wakes up when the trigger message corresponding to the station to be received is sent, and receives the trigger message corresponding to the station to be received;

If the station to be received corresponds to the first trigger message, the station to be received is in an awake state when the first trigger message is sent, and receives the first trigger message sent by the access point;

If the station to be received corresponds to the Nth trigger message, the station to be received is in an awake state at the time when the Nth trigger message is sent, and receives the Nth trigger message sent by the access point, and the Nth trigger message is not is a positive integer of one.

Specifically, the trigger message may be a trigger message, or a message in other formats, which is not specifically limited here. Optionally, the trigger message may include: the identification information of the trigger message, the indication information of the station group to be received corresponding to the trigger message, the sending time information of the next trigger message, and one or more information in the channel resource indication information; It depends on the actual situation and is not limited here. Exemplarily, the message structure of the trigger message may refer to FIG. 6 .

Optionally, the trigger message may further include: channel resource indication information; the channel resource indication information is indication information of a channel resource corresponding to the trigger message to send an indication message to be received by a station group to be received, the The channel resource for sending the to-be-received indication message includes at least one channel resource unit used for the to-be-received station to send the to-be-received indication message. It can be understood that, in practical applications, if the access point and the station to be received have agreed on channel resources in advance, the trigger message may not include channel resource indication information.

704. The station to be received sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the station to be received;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Exemplarily, the to-be-received stations of the first to-be-received station group may determine channel resources for sending the to-be-received indication message according to the to-be-received station group indication information carried in the first trigger message. Optional, there are two ways:

1. If the access point and the station to be received have agreed in advance on the channel resource (the frequency band of the entire spectrum resource, and the division method of the entire spectrum resource) of the indication message to be received, the station to be received in the first group of stations to be received is based on the Start AID1 and the corresponding identification bit of the self-site in the TIM determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station group to be received, and corresponding Correspondingly, the channel resource corresponding to the self-site is in the Xth frequency band in the entire spectrum resource;

2. If the access point and the station to be received have not agreed on the channel resource of the indication message to be received, the station to be received in the first station group to be received knows the channel resource of the indication message to be received through the channel resource indication information in the first trigger message , and then according to Start AID1 and the corresponding identification bit of the self-site in the TIM, determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station group to be received, and correspondingly, the channel resources corresponding to the self-site are in In the Xth frequency band in the entire spectrum resource.

705. The station to be received receives the resource allocation information sent by the access point.

The station to be received receives the resource allocation information sent by the access point, and downloads the cached data in the channel resource indicated by the allocation message.

On the access point side, it is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the station group information to be received included in the broadcast message is the station group information to be received corresponding to each station group to be received, broadcast The sending time information of the trigger message included in the message is only the sending time information of the first trigger message. Please refer to FIG. 8. Another embodiment of the transmission method of the indication message to be received in the embodiment of the present invention includes:

801. The access point sends a broadcast message;

When data of multiple stations to be received is buffered in the access point, the access point sends a broadcast message, and the broadcast message includes: transmission indication bitmap, station group information to be received corresponding to each station group to be received, first trigger The sending time information of the message, the trigger message is used to indicate that the stations to be received in the same group of stations to be received send the indication message to be received to the access point at the same time, and the first trigger message is corresponding to the first station group to be received trigger message. The station to be received is a station indicated in the TIM that there is downlink data.

Exemplarily, the message structure of the broadcast message can refer to FIG. 5 (in the embodiment of the present invention, there is no Trigger time2 in the Trigger IE).

802. The access point sends a first trigger message according to the sending time information of the first trigger message;

Specifically, the first trigger message may include: sending time information of the trigger message corresponding to the second station group to be received.

After receiving the broadcast message, the station checks the TIM in the broadcast message. If the binary number corresponding to the station in the TIM is "0", the station does not need to process it; The binary value of is "1", then the station is the station to be received.

Further, the station to be received determines the station group to be received and the trigger message corresponding to the station to be received according to the corresponding station group information to be received included in the broadcast message, and prepares to send the indication message to be received.

After the station to be received of the first station group to be received determines that there is downlink cached data to be transmitted, it checks the information of the first station group to be received in the broadcast message, and confirms that its own station belongs to the For the first station group to be received, the corresponding trigger message is the first trigger message, and the stations to be received in the first station group to be received are in an awake state when the first trigger message is sent.

Exemplarily, the message structure of the trigger message may refer to FIG. 6 .

803. The access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Exemplarily, the to-be-received stations of the first to-be-received station group may determine channel resources for sending the to-be-received indication message according to the to-be-received station group indication information carried in the first trigger message. Optional, there are two ways:

1. If the access point and the station to be received have agreed in advance on the channel resource (the frequency band of the entire spectrum resource, and the division method of the entire spectrum resource) of the indication message to be received, the station to be received in the first group of stations to be received is based on the Start AID1 and the corresponding identification bit of the self-site in the TIM determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station-to-be-received group, and correspondingly, the channel resources corresponding to the self-site are in the entire frequency spectrum In the Xth frequency band in the resource;

2. If the access point and the station to be received have not agreed on the channel resource of the indication message to be received, the station to be received in the first station group to be received knows the channel resource of the indication message to be received through the channel resource indication information in the first trigger message , and then according to Start AID1 and the corresponding identification bit of the self-site in the TIM, determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station group to be received, and correspondingly, the channel resources corresponding to the self-site are in In the Xth frequency band in the entire spectrum resource.

804. The access point sends resource allocation information to the stations to be received in the first station group to be received;

The access point sends resource allocation information to the to-be-received stations in the first to-be-received station group, and the allocation message is used to indicate to the to-be-received stations the channel resources for downloading the cached data, so that the to-be-received stations can be on the channel indicated by the allocation message Download the cached data from resources.

805. The access point sends a second trigger message;

It can be understood that step 805 occurs after step 802, but has no strict timing relationship with steps 803 and 804.

Specifically, the second trigger message may include: indication information of the station group to be received, and sending time information of the trigger message corresponding to the second station group to be received.

Exemplarily, after the station to be received receives the trigger message:

1) The station to be received judges whether the trigger message currently received is the trigger message corresponding to the station to be received, and if so, stops the process of receiving the trigger message; if not, executes step 2);

2) The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message and performs step 1).

806. The access point receives a to-be-received indication message sent by at least one to-be-received station in the second to-be-received station group according to the second trigger message and using a multi-user transmission mechanism;

Optionally, if there are multiple station groups to be received, the access point may continue to send the trigger message and receive the to-be-received indication message according to the above method.

807. The access point sends resource allocation information to the stations to be received in the second station group to be received.

The access point sends resource allocation information to the stations to be received in the second group of stations to be received, and the allocation message is used to indicate to the stations to be received the channel resources for downloading the cached data, so that the stations to be received are on the channel indicated by the allocation message Download the cached data from resources.

On the station side, it is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is the information of the station group to be received corresponding to each station group to be received, and in the broadcast message The included sending time information of the trigger message is only the sending time information of the first trigger message, please refer to FIG. 9 , another embodiment of the transmission method of the indication message to be received in the embodiment of the present invention includes:

901. The station to be received receives the broadcast message sent by the access point;

The station to be received receives the broadcast message sent by the access point, and the broadcast message includes: a transmission indication bit Fig. 1 shows the station group information to be received corresponding to each station group to be received, and the sending time information of the first trigger message. An indication message, the first trigger message is a trigger message corresponding to the first station group to be received. The station to be received is a station indicated in the TIM that there is downlink data.

Exemplarily, the message structure of the broadcast message can refer to FIG. 5 (in the embodiment of the present invention, there is no Trigger time2 in the Trigger IE).

Exemplarily, after receiving the broadcast message, the station checks the TIM in the broadcast message. If the binary number corresponding to the station in the TIM is "0", the station does not need to process it; If the binary number is "1", then it is confirmed that the station is the station to be received, and step 902 is executed.

902. The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

Specifically, the first trigger message includes: sending time information of the trigger message corresponding to the second station group to be received.

Specifically, after the station receives the broadcast message, if it finds that its own station has downlink buffer data to be transmitted through the TIM, and learns that its own station belongs to the first station group through the information of the first station group to be received, then in The sending time of the first trigger message is in an awake state, so as to receive the first trigger message. Optionally, if the station finds through the TIM that its own station has no downlink buffer data to be transmitted, no processing may be performed.

If the station confirms that it is a station to be received through the TIM, and knows that its own station belongs to a non-first station group through the information of the first station group to be received, since the broadcast message does not include the station to be received corresponding to its own station Therefore, the station to be received needs to wake up when the second trigger message is sent according to the sending time information of the second trigger message included in the first trigger message, and receive the second trigger message.

Optionally, the trigger message may further include: channel resource indication information; the channel resource indication information is indication information of a channel resource corresponding to the trigger message to send an indication message to be received by a station group to be received, the The channel resource for sending the to-be-received indication message includes at least one channel resource unit used for the to-be-received station to send the to-be-received indication message. It can be understood that, in practical applications, if the access point and the station to be received have agreed on channel resources in advance, the trigger message may not include channel resource indication information.

903. The station to be received judges whether the currently received trigger message is the trigger message corresponding to the station to be received;

The station to be received judges whether the currently received trigger message is the trigger message corresponding to the station to be received, and if so, stops the process of receiving the trigger message, and executes step 905; if not, executes step 904.

In practical applications, if the broadcast message does not include the sending time of the trigger message corresponding to each station group to be received, the corresponding trigger message sent by the access point will include the sending time information of the trigger message corresponding to the second station group to be received .

904. The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message;

The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message, and performs step 903 .

905. The station to be received sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the station to be received;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Exemplarily, the to-be-received stations of the first to-be-received station group may determine channel resources for sending the to-be-received indication message according to the to-be-received station group indication information carried in the first trigger message. Optional, there are two ways:

1. If the access point and the station to be received have agreed in advance on the channel resource (the frequency band of the entire spectrum resource, and the division method of the entire spectrum resource) of the indication message to be received, the station to be received in the first group of stations to be received is based on the Start AID1 and the corresponding identification bit of the self-site in the TIM determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station-to-be-received group, and correspondingly, the channel resources corresponding to the self-site are in the entire frequency spectrum In the Xth frequency band in the resource;

2. If the access point and the station to be received have not agreed on the channel resource of the indication message to be received, the station to be received in the first station group to be received knows the channel resource of the indication message to be received through the channel resource indication information in the first trigger message , and then according to Start AID1 and the corresponding identification bit of the self-site in the TIM, determine that the self-site belongs to a site group to be received and all sites to be received (indicated by Num1) Correspondingly, the channel resource corresponding to the self-site is in the Xth frequency band in the entire spectrum resource.

906. The station to be received receives the resource allocation information sent by the access point.

The station to be received receives the resource allocation information sent by the access point, and downloads the cached data in the channel resource indicated by the allocation message.

On the access point side, it is assumed that not all the stations to be received in the station group to be received support the multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is only the information of the first station group to be received, and the broadcast message includes The sending time information of the trigger message is only the sending time information of the first trigger message, please refer to FIG. 10, another embodiment of the method for transmitting the indication message to be received in the embodiment of the present invention includes:

1001. The access point sends a broadcast message;

When data of multiple stations to be received is cached in the access point, the access point sends a broadcast message, and the broadcast message includes: transmission indication bitmap, information of the first station group to be received by the station to be received, information of the first trigger message Sending time information, the trigger message is used to indicate that the stations to be received in the same station group to be received simultaneously send a message to be received to the access point, and the first trigger message is a trigger message corresponding to the first station group to be received .

Exemplarily, the message structure of the broadcast message may refer to FIG. 5 (in this embodiment of the present invention, there is no second group of Trigger IEs).

In the embodiment of the present invention, Group1 includes a plurality of stations to be received, wherein some stations to be received support the multi-user transmission mechanism, and some stations to be received do not support the multi-user transmission mechanism.

1002. The access point sends a first trigger message according to the sending time information of the first trigger message;

Specifically, the first trigger message includes: sending time information of the trigger message corresponding to the second station group to be received.

After receiving the broadcast message, the station checks the TIM in the broadcast message. If the binary number corresponding to the station in the TIM is "0", the station does not need to process it; if the binary number corresponding to the station in the TIM is " 1", then the station is the station to be received.

After the to-be-received station supporting the multi-user transmission mechanism receives the broadcast message sent by the access point, the to-be-received station wakes up when the first trigger message is sent according to the sending time information of the first trigger message.

After the receiving station that does not support the multi-user transmission mechanism receives the broadcast message sent by the access point, The station to be received can only recognize the TIM information in the broadcast message, therefore, the station to be received will send the indication message to be received to the access point in the way of free competition channel in the prior art, wherein the channel free competition mechanism The general process is: the station to be received first monitors whether the channel is idle. If the channel is idle for more than a certain period of time (such as AIFS, arbitration interframe space, arbitration frame interval), the station to be received will start a backoff mechanism, that is, at the set minimum Randomly select a backoff time value (in units of Time slot) between the backoff time and the maximum backoff time, and start a countdown timing clock (in units of Time slot) at the same time, when the accumulated channel idle time reaches the backoff time value selected by the station to be received , the countdown timing clock is reduced to 0, and the station to be received is triggered to send a to-be-received indication message to the access point.

1003. The access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Exemplarily, after the first trigger message is received, the time for sending the to-be-received indication message is determined according to the first trigger message. Optionally, in practical applications, an agreed time period may be set between the stations to be received, and after receiving the first trigger message and after the agreed time period, each station to be received simultaneously sends a reception indication message. Optionally, the first trigger message may also include sending indication information of an indication message to be received, and each station to be received determines the time for uniformly sending the receiving indication message according to the indication of the sending indication information of the indication message to be received.

First, before sending the indication message to be received, the station to be received first determines the channel resource (the frequency band of the entire spectrum resource, and the division method of the entire spectrum resource) of the indication message to be received. Specifically, there are two ways: 1. The entry point and the station to be received agree in advance; 2. The station to be received obtains the channel resource of the indication message to be received through the channel resource indication information in the first trigger message.

Secondly, the station to be received determines the channel resource for the station to send the indication message to be received according to the channel resource of the indication message to be received and the first station group information of the station to be received included in the trigger message. Specifically, if there are stations that support the multi-user transmission mechanism and stations that do not support the multi-user transmission mechanism at the same time, the indication information of the station group to be received included in the trigger message is the type indication of the station to be received, and the station to be received The type indication is specifically a binary bit table, such as the STA type Bit-MAP in Figure 12. Exemplary, the station to be received obtains according to STA type Bit-MAP It is known that the self-site is the Xth station to be received that supports the multi-user transmission mechanism in the group of to-be-received stations, and correspondingly, the channel resource corresponding to the self-site is in the Xth frequency band in the entire spectrum resource.

1004. The access point sends resource allocation information to the stations to be received in the first station group to be received;

The access point sends resource allocation information to the to-be-received stations in the first to-be-received station group, and the allocation message is used to indicate to the to-be-received stations the channel resources for downloading the cached data, so that the to-be-received stations can be on the channel indicated by the allocation message Download the cached data from resources.

1005. The access point sends a second trigger message;

It can be understood that step 1005 occurs after step 1002, but has no strict timing relationship with steps 1003 and 1004.

Specifically, the second trigger message may include: indication information of the station group to be received, and sending time information of the trigger message corresponding to the second station group to be received.

Exemplarily, after the station to be received receives the trigger message:

1) The station to be received judges whether the currently received trigger message includes the station group indication information to be received corresponding to the station to be received, if not, then perform step 2); if so, then perform step 3);

2) The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message, and performs step 1);

3) The station to be received determines that the currently received trigger message is the trigger message corresponding to the station to be received.

1006. The access point receives a to-be-received indication message sent by at least one to-be-received station in the second to-be-received station group according to the second trigger message and using a multi-user transmission mechanism;

Optionally, if there are multiple station groups to be received, the access point may continue to send the trigger message and receive the to-be-received indication message according to the above method.

1007. The access point sends resource allocation information to the stations to be received in the second station group to be received.

The access point sends resource allocation information to the stations to be received in the second group of stations to be received, and the allocation message is used to indicate to the stations to be received the channel resources for downloading the cached data, so that the stations to be received are on the channel indicated by the allocation message Download the cached data from resources.

On the site side, it is assumed that not all the sites to be received in the site group to be received support multi-user transmitters and the information of the site group to be received included in the broadcast message is only the information of the first site group to be received, and the sending time information of the trigger message included in the broadcast message is only the sending time information of the first trigger message, please refer to Figure 11, Another embodiment of the method for transmitting the indication message to be received in the embodiment of the present invention includes:

1101. The station to be received receives the broadcast message sent by the access point;

The station to be received receives the broadcast message sent by the access point, the broadcast message includes: a transmission indication bitmap, the first station group information to be received, and the sending time information of the first trigger message, and the trigger message is used to indicate the same station to be received The stations to be received in the station group simultaneously send a to-be-received indication message to the access point, and the first trigger message is a trigger message corresponding to the first station group to be received. The station to be received is a station indicated in the TIM that there is downlink data.

Exemplarily, after receiving the broadcast message, the station checks the TIM in the broadcast message. If the binary number corresponding to the station in the TIM is "0", the station does not need to process it; If the binary number is "1", then confirm that the station is the station to be received; further, if the station to be received can identify the Trigger IE information in the broadcast message, step 1102 is performed; if the station to be received cannot identify the Trigger in the broadcast message IE information, it is confirmed that the station to be received is a station to be received that does not support the multi-user transmission mechanism, and the station to be received can only recognize the information of the TIM in the broadcast message, so the station to be received will use the existing technology The mode of free contention channel sends the indication message to be received to the access point, wherein, the general process of the channel free competition mechanism is: the station to be received first monitors whether the channel is idle, if the channel is idle for more than a certain period of time (such as AIFS, arbitration interframe space , arbitration frame interval), the station to be received starts a backoff mechanism, that is, randomly selects a backoff time value (in Time slot) between the set minimum backoff time and the maximum backoff time, and starts a countdown timing clock at the same time ( Take Time slot as unit), when the accumulated channel idle time reaches the back-off time value selected by the station to be received, the countdown timing clock is reduced to 0, triggering the station to be received to send an indication message to be received to the access point.

1102. The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

Specifically, the trigger message includes: sending time information of the trigger message corresponding to the second station group to be received.

1103. The station to be received judges whether the currently received trigger message includes the indication information of the station group to be received corresponding to the station to be received;

The station to be received determines whether the currently received trigger message includes the station group indication information to be received corresponding to the station to be received, if not, then execute step 1104); if so, the station to be received determines that the currently received trigger message is the The trigger message corresponding to the station to be received is executed, and step 1105 is executed).

Specifically, the trigger message includes: sending time information of the trigger message corresponding to the second station group to be received, and indication information of the station group to be received;

In this embodiment of the present invention, the indication information of the station group to be received included in the trigger message may be a station type indication bit table, and each bit in the station type indication bit table corresponds to the station group to be received corresponding to the trigger message. A to-be-received station, each bit in the station type indication bit table is used to indicate whether the corresponding to-be-received station can send the to-be-received indication message.

Exemplary, the message structure of described trigger message can refer to Fig. 12, and in Fig. 12, Trigger ID is the identification of trigger message (such as, the first trigger message, corresponds to the station to be received of the first station group to be received) ; Optionally, STA type Bit-MAP is the type indication of the station to be received. When the STA type Bit-MAP is set to "1", it means that the corresponding station to be received supports the multi-user transmission mechanism; When the bit binary number is set to "0", it means that the corresponding station to be received does not support the multi-user transmission mechanism. Optionally, Next Trigger time refers to the sending time information of the next trigger message. Optionally, the PS-Poll resource is channel resource indication information, and the channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the transmission to be received The channel resource of the indication message includes at least one channel resource unit for the station to be received to send the indication message to be received. In practical applications, the channel resource to receive the indication message can be agreed in advance by the access point and the station to receive, therefore, the trigger message does not necessarily include PS-Poll resource.

1104. The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message;

The station to be received receives the trigger message corresponding to the second station group to be received according to the sending time information of the trigger message corresponding to the second station group to be received included in the currently received trigger message, and performs step 1103 .

1105. The station to be received sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the station to be received;

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Specifically, the stations to be received in the first group of stations to be received that support the multi-user transmission mechanism may determine channel resources for sending the to-be-received indication message according to the indication information of the station group to be received carried in the first trigger message. Optional, there are two ways:

1. If the access point and the station to be received have agreed in advance on the channel resource (the frequency band of the entire spectrum resource, and the division method of the entire spectrum resource) of the indication message to be received, the first group of stations to be received supports the multi-user transmission mechanism According to the STA type Bit-MAP, the station to be received knows that its station is the Xth station to be received that supports the multi-user transmission mechanism in the first station group to be received, and correspondingly, the channel resource corresponding to its own station is in the entire spectrum resource In the Xth frequency band of ;

2. If the access point and the station to be received have not agreed on the channel resource of the indication message to be received, the station to be received in the first station group to be received knows the channel resource of the indication message to be received through the channel resource indication information in the first trigger message , then the station to be received in the first station group to be received supports the multi-user transmission mechanism according to the STA type Bit-MAP and learns that its own station is the Xth station to be received in the first station group to be received to support the multi-user transmission mechanism, correspondingly, The channel resource corresponding to the own site is in the Xth frequency band in the entire frequency spectrum resource.

1106. The station to be received receives the resource allocation information sent by the access point.

The station to be received receives the resource allocation information sent by the access point, and downloads the cached data in the channel resource indicated by the allocation message.

In the embodiment of the present invention, when not all the stations to be received in the station group to be received support the multi-user transmission mechanism, there is also "the information of the station group to be received included in the broadcast message is the station group to be received corresponding to each station group to be received Site group information, the sending time information of the trigger message included in the broadcast message is the sending time information of the trigger message corresponding to each station group to be received", you can refer to the content of the embodiment in Figure 4 and Figure 5 (wherein, how to determine each Please refer to Figure 10 and Figure 11 for the channel resources of the stations to be received), and "the station group information to be received included in the broadcast message is the station group information to be received corresponding to each station group to be received, and the trigger message included in the broadcast message The scenario where the time information is the sending time information of the first trigger message" can refer to the content of the embodiment in Fig. 8 and Fig. 9 (wherein, how to determine the channel resources of each station to be received please refer to Fig. 10 and Fig. 11 ), not here Let me repeat.

The following describes the access point that implements the above-mentioned transmission method of the indication message to be received, please refer to FIG. 13. Another embodiment of the access point in the embodiment of the present invention includes:

The sending unit 1301 is configured to send a broadcast message, the broadcast message includes: to-be-transmitted indication bitmap (TIM) information, first site group information to be received, and sending time information of the first trigger message; the trigger message is used to indicate The stations to be received that support the multi-user transmission mechanism in the same group of stations to be received send a message to be received to the access point at the same time; the stations to be received are the stations that indicate that there is downlink data in the TIM;

The sending unit 1301 is further configured to send the first trigger message according to the sending time information of the first trigger message;

The receiving unit 1302 is configured to receive a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism.

Optionally, the broadcast message also includes:

The station group information to be received corresponding to at least one other station group to be received except the first station group to be received.

Optionally, the broadcast message also includes:

The sending time information of the trigger message corresponding to at least one other station group to be received except the first station group to be received.

Optionally, the site group information to be received includes:

The identification information of the first station to be received of the station group to be received, or the identification information of the station to be received at the end of the station group to be received.

Optionally, the broadcast message also includes:

Information about the number of sites to be received included in the site group to be received.

Optionally, the trigger message includes:

The sending time information of the trigger message corresponding to the second station group to be received.

Optionally, the trigger message includes: indication information of a station group to be received;

The indication information of the station group to be received includes: initial association identifier or identification information of the station group to be received, and the initial association identifier is the association identifier of the station to be received with the smallest association identifier among the stations to be received corresponding to the trigger message ;

and / or,

The station group indication information to be received includes: a station type indication bit table, and the station type indication Each bit in the bit table corresponds to a station to be received in the group of stations to be received corresponding to the trigger message, and each bit in the station type indication bit table is used to indicate whether the corresponding station to be received can send the Pending to receive indication message.

Optionally, the to-be-received station group indication information is used to indicate channel resource allocation information of a to-be-received station group corresponding to a to-be-received indication message.

Optionally, the trigger message includes:

Channel resource indication information, the channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the channel resource for sending an indication message to be received includes at least one Sending the channel resource unit of the indication message to be received at the station to be received.

It is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is the information of the station group to be received corresponding to each station group to be received, and the trigger message included in the broadcast message The sending time information is the sending time information of the trigger message corresponding to each site group to be received. Correspondingly, the function process of each unit in the embodiment of the present invention is:

When data of multiple stations to be received is buffered in the access point, the sending unit 1301 sends a broadcast message, and the broadcast message includes: transmission indication bitmap, information of station groups to be received corresponding to each station group to be received, each station group to be received The sending time information of the trigger message corresponding to the station group, the trigger message is used to indicate that the stations to be received in the same station group to be received send the indication message to be received to the access point at the same time, and the first trigger message is the first to be received Receive the trigger message corresponding to the site group. The station to be received is a station indicated in the TIM that there is downlink data.

Exemplarily, the message structure of the broadcast message can refer to FIG. 5. In FIG. 5, the TIM is a multi-bit binary sequence, and each bit in the binary sequence corresponds to the AID of each station to be received, when When a binary number is set to "1", it means that the corresponding station to be received has data cached in the access point; when one of the binary numbers is set to "0", it means that the corresponding station to be received has no data cached in the access point point. Trigger IE (Information elements) is the information element of the trigger message. The Trigger IE includes the information of the station group to be received (Group1, Group2, etc. in the figure) and the sending time information of the trigger message of the corresponding station group to be received (as shown in the figure) Trigger time1, Trigger time2, etc.), in the station group information to be received, Start AID1 represents the AID of the station to be received with the smallest AID in the first station group to be received corresponding to the first trigger message (or STA in the station group to be received The serial number of "1" in the TIM corresponding to the STA with the smallest AID included, that is, the number "1" in the TIM), Num1 indicates the number of stations to be received contained in the first station group to be received, corresponding to Start AID1 in the TIM Corresponding to the number of "1" starting with "1", and so on for the information when there are multiple trigger messages. It should be noted that Start AID1 can also represent the AID of the station to be received (i.e. the end receiving station) with the largest AID in the first station group to be received corresponding to the first trigger message (or the AID with the largest AID included in the station group to be received by the STA). The serial number of "1" in the TIM corresponding to the STA, that is, the number of "1" in the TIM).

The sending unit 1301 sends the first trigger message by the access point according to the sending time information of the first trigger message;

The receiving unit 1302 receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism.

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Exemplarily, the to-be-received stations of the first to-be-received station group may determine channel resources for sending the to-be-received indication message according to the to-be-received station group indication information carried in the first trigger message. Optional, there are two ways:

1. If the access point and the station to be received have agreed in advance on the channel resource (the frequency band of the entire spectrum resource, and the division method of the entire spectrum resource) of the indication message to be received, the station to be received in the first group of stations to be received is based on the Start AID1 and the corresponding identification bit of the self-site in the TIM determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station-to-be-received group, and correspondingly, the channel resources corresponding to the self-site are in the entire frequency spectrum In the Xth frequency band in the resource;

2. If the access point and the station to be received have not agreed on the channel resource of the indication message to be received, the station to be received in the first station group to be received knows the channel resource of the indication message to be received through the channel resource indication information in the first trigger message , and then according to Start AID1 and the corresponding identification bit of the self-site in the TIM, determine that the self-site belongs to the Xth among all the stations to be received (indicated by Num1) of a station group to be received, and correspondingly, the channel resources corresponding to the self-site are in In the Xth frequency band in the entire spectrum resource.

It is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is only the information of the first station group to be received, and the sending time information of the trigger message included in the broadcast message Only the sending time information of the first trigger message, please refer to Figure 2 for implementation example, which will not be repeated here.

It is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is the information of the station group to be received corresponding to each station group to be received, and the trigger message included in the broadcast message The sending time information is only the sending time information of the first trigger message, please refer to the embodiment in FIG. 8 , which will not be repeated here.

Assuming that not all the stations to be received in the station group to be received support the multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is only the information of the first station group to be received, the sending time of the trigger message included in the broadcast message The only information is the sending time information of the first trigger message, please refer to the embodiment in FIG. 10 , which will not be repeated here.

The following describes the station implementing the method for transmitting the indication message to be received. Please refer to FIG. 14. An embodiment of the station in the embodiment of the present invention includes:

The message receiving unit 1401 is configured to receive a broadcast message sent by an access point, where the broadcast message includes: information about a bitmap indicating to be transmitted, first station group information to be received, and sending time information of a first trigger message, wherein the first message to be transmitted The receiving station group corresponds to the first trigger message; the first trigger message is used to instruct the station to be received in the first station group to be received that supports the multi-user transmission mechanism to simultaneously send a to-be-received indication message to the access point ; The station to be received is a station indicated in the TIM that there is downlink data;

The message receiving unit 1401 is further configured to wake up when its corresponding trigger message is sent according to the sending time information of the first trigger message, and receive its corresponding trigger message;

The message sending unit 1402 is configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station.

Optionally, the site also includes:

The first determining unit 1403 is configured to determine a station group to be received and a trigger message corresponding to the station to be received according to the TIM and the first station group information to be received.

Optionally, the broadcast message further includes: station group information to be received corresponding to at least two station groups to be received other than the first station group to be received;

The site also includes:

The second determining unit 1404 is configured to determine a station group to be received corresponding to the station to be received and a trigger message according to the TIM and at least two station group information to be received corresponding to the station group to be received.

Optionally, the station further includes: a first judging unit 1405;

The first trigger message includes: sending time information of the second trigger message, and the second trigger message is used to indicate that the stations to be received in the second group of stations to be received that support the multi-user transmission mechanism simultaneously send to the access point To receive the indication message;

The first judging unit is configured to judge the first trigger after the message receiving unit wakes up when the first trigger message is sent and receives the first trigger message according to the sending time information of the first trigger message. Whether the message is a trigger message corresponding to the station to be received;

The message sending unit is specifically configured to, when the first trigger message is a trigger message corresponding to the station to be received, use a multi-user transmission mechanism to send the message to the access point according to the trigger message corresponding to the station to be received To receive the indication message;

The message receiving unit is further configured to receive the second trigger message to be received according to the sending time information of the second trigger message in the first trigger message when the first trigger message is not the trigger message corresponding to the station to be received. The trigger message corresponding to the site group.

Optionally, the station further includes: a second judging unit 1406;

The trigger message includes: indication information of the site group to be received and sending time information of the trigger message corresponding to the second site group to be received;

The first trigger message includes: the indication information of the first station group to be received and the sending time information of the second trigger message, and the second trigger message is used to indicate that the station group supporting the multi-user transmission mechanism in the second station group to be received is to be received. The station simultaneously sends an indication message to be received to the access point;

The second judging unit is configured to judge the first trigger after the message receiving unit wakes up when the first trigger message is sent and receives the first trigger message according to the sending time information of the first trigger message. Does the message include the indication information of the station group to be received corresponding to the station to be received, and if not, trigger the message receiving unit to receive the second to-be-received Receive a trigger message corresponding to the site group; if yes, execute the message sending unit. The message sending unit is specifically configured to, when the first trigger message includes the indication information of the station group to be received corresponding to the station to be received, use the multi-user transmission mechanism to send the message to the station to be received according to the trigger message corresponding to the station to be received The access point sends an indication message to be received;

The message receiving unit is also used for when the first trigger message does not include the to-be-received When the to-be-received site group indication information corresponding to the site is received, the trigger message corresponding to the second to-be-received site group is received according to the sending time information of the second trigger message in the first trigger message.

Optionally, the station further includes: a first channel determining unit 1407;

The trigger message includes: indication information of a station group to be received, where the indication information of a station group to be received is used to indicate channel resource allocation information of an indication message to be received corresponding to a station group to be received;

The first channel determining unit 1407 is configured to determine the channel resource corresponding to the station to be received sending the indication message to be received according to the preset channel resource and the indication information of the station group to be received,

The message sending unit 1402 is specifically configured to use the channel resource determined by the first channel determining unit to send a to-be-received indication message to the access point.

Optionally, the station further includes: a second channel determining unit 1408;

The trigger message includes: channel resource indication information, station group indication information to be received;

The channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the channel resource for sending an indication message to be received includes at least one channel resource for the to-be-received indication message The station sends the channel resource unit of the indication message to be received;

The indication information of the station group to be received is used to indicate the channel resource allocation information corresponding to a station group to be received for sending the indication message to be received;

The second channel determining unit 1408 determines, according to the channel resource indication information and the station group indication information to be received, the channel resource corresponding to the station to be received sending the indication message to be received;

The message sending unit 1402 is specifically configured to use the channel resource determined by the second channel determining unit to send a to-be-received indication message to the access point.

It is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is only the information of the first station group to be received, and the sending time information of the trigger message included in the broadcast message Only the sending time information of the first trigger message, correspondingly, the function process of each unit in the embodiment of the present invention is as follows:

The message receiving unit 1401 receives a broadcast message sent by the access point, where the broadcast message includes: a transmission indication bitmap, information about a first station group to be received, and sending time information of a first trigger message, where the trigger message is used to indicate the same station group to be received The stations to be received in the receiving station group simultaneously send a to-be-received indication message to the access point, and the first trigger message is a trigger message corresponding to the first station group to be received. The station to be received is a station indicated in the TIM that there is downlink data.

After receiving the broadcast message, the message receiving unit 1401 wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

Specifically, the first trigger message includes: sending time information of the trigger message corresponding to the next station group to be received.

Specifically, after the station receives the broadcast message, if it finds that its own station has downlink buffer data to be transmitted through the TIM, and learns that its own station belongs to the first station group through the information of the first station group to be received, then in The sending time of the first trigger message is in an awake state, so as to receive the first trigger message. Optionally, if the station finds through the TIM that its own station has no downlink buffer data to be transmitted, no processing may be performed.

If the station confirms that it is a station to be received through the TIM, and knows that its own station belongs to a non-first station group through the information of the first station group to be received, since the broadcast message does not include the station to be received corresponding to its own station Therefore, the station to be received needs to wake up when the second trigger message is sent according to the sending time information of the second trigger message included in the first trigger message, and receive the second trigger message.

Specifically, the trigger message may be a trigger message, or a message in other formats, which is not specifically limited here. Optionally, the trigger message may include: the identification information of the trigger message, the indication information of the station group to be received corresponding to the trigger message, the sending time information of the next trigger message, and one or more information in the channel resource indication information; It depends on the actual situation and is not limited here.

Optionally, the trigger message may further include: channel resource indication information; the channel resource indication information is indication information of a channel resource corresponding to the trigger message to send an indication message to be received by a station group to be received, the The channel resource for sending the to-be-received indication message includes at least one channel resource unit used for the to-be-received station to send the to-be-received indication message. It can be understood that, in practical applications, if the access point and the station to be received have agreed on channel resources in advance, the trigger message may not include channel resource indication information.

The first judging unit 1405 judges whether the currently received trigger message includes the indication information of the station group to be received corresponding to the station to be received. The sending time information of the trigger message corresponding to the site group, and receive the trigger message corresponding to the next site group to be received; if so, the message sending unit 1402 uses the multi-user transmission mechanism to send Inpoint sending pending indication information.

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Specifically, if the access point has agreed on a channel resource with the station to be received, the first channel determination unit 1407 determines that the station to be received sends the indication to be received according to the preset channel resource and the indication information of the station group to be received channel resources corresponding to the message, and then use the channel resources to send a pending reception indication message to the access point.

Optionally, if the access point and the stations to be received have not agreed on channel resources, the trigger message will include channel resource indication information; the second channel determination unit 1408 according to the channel resource indication information and the group of stations to be received The indication information determines the channel resource corresponding to the to-be-received indication message sent by the station to be received, and then uses the channel resource to send the to-be-received indication message to the access point.

It is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is the information of the station group to be received corresponding to each station group to be received, and the trigger message included in the broadcast message The sending time information is only the sending time information of the first trigger message, please refer to the embodiment in FIG. 9 , which will not be repeated here.

Assuming that not all the stations to be received in the station group to be received support the multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is only the information of the first station group to be received, the sending time of the trigger message included in the broadcast message The only information is the sending time information of the first trigger message, please refer to the embodiment in FIG. 11 , which will not be repeated here.

The following describes the station that implements the above-mentioned transmission method of the indication message to be received. Please also refer to FIG. 14. Another embodiment of the station in the embodiment of the present invention includes:

The message receiving unit 1401 is configured to receive a broadcast message sent by an access point, where the broadcast message includes: to-be-transmitted indication bitmap (TIM) information, information on at least two station groups to be received, information corresponding to at least two station groups to be received The sending time information of the trigger message; the trigger message is used to indicate that the stations to be received in the same group of stations to be received that support the multi-user transmission mechanism simultaneously send the instruction message to be received to the access point; the station to be received is in the A station indicating downlink data in the above TIM;

The message receiving unit 1401 is further configured to wake up when the trigger message corresponding to the station to be received is sent according to the sending time information of the trigger message corresponding to the at least two station groups to be received, and receive the message corresponding to the station to be received. trigger message;

The message sending unit 1402 is configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station.

Optionally, the station further includes: a first channel determining unit 1407;

The trigger message includes: indication information of a station group to be received, where the indication information of a station group to be received is used to indicate channel resource allocation information of an indication message to be received corresponding to a station group to be received;

The first channel determining unit is configured to determine, according to preset channel resources and the indication information of the station group to be received, the channel resources corresponding to the station to be received sending the indication message to be received,

The message sending unit is specifically configured to: use the channel resource determined by the first channel determining unit to send a to-be-received indication message to the access point.

Optionally, the station further includes: a second channel determining unit 1408;

The trigger message includes: channel resource indication information, station group indication information to be received;

The channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the channel resource for sending an indication message to be received includes at least one channel resource for the to-be-received indication message The station sends the channel resource unit of the indication message to be received;

The indication information of the station group to be received is used to indicate the channel resource allocation information corresponding to a station group to be received for sending the indication message to be received;

The second channel determining unit determines, according to the channel resource indication information and the station group indication information to be received, the channel resource corresponding to the station to be received sending the indication message to be received

The message sending unit is specifically configured to: use the channel resource determined by the second channel determining unit to send a to-be-received indication message to the access point.

It is assumed that each station to be received in the station group to be received supports a multi-user transmission mechanism, and the information of the station group to be received included in the broadcast message is the information of the station group to be received corresponding to each station group to be received, and the trigger message included in the broadcast message The sending time information is the sending time information of the trigger message corresponding to each site group to be received. Correspondingly, the function process of each unit in the embodiment of the present invention is:

The message receiving unit 1401 receives the broadcast message sent by the access point, and the broadcast message includes: a transmission indication bitmap, station group information to be received corresponding to each station group to be received, and sending time information of a trigger message corresponding to each station group to be received The trigger message is used to instruct the stations to be received in the same group of stations to be received to simultaneously send a to-be-received indication message to the access point, and the first trigger message is a trigger message corresponding to the first station group to be received. The station to be received indicates that there is a downlink in the TIM data site.

For example, the message structure of the broadcast message may refer to FIG. 5 .

After receiving the broadcast message, the message receiving unit 1401 confirms the station group to be received and the corresponding trigger message to which the station belongs according to the TIM and the information of each station group to be received;

If the station to be received corresponds to the first trigger message, be awake at the time when the first trigger message is sent, and receive the first trigger message sent by the access point;

If the station to be received corresponds to the Nth trigger message, it is awake at the time when the Nth trigger message is sent, and receives the Nth trigger message sent by the access point, and the N is not a positive integer .

The message sending unit 1402 uses a multi-user transmission mechanism to send a to-be-received indication message to the access point according to the trigger message corresponding to the to-be-received station.

In practical applications, after receiving the trigger message, the stations to be received in a group of stations to be received will determine the channel resources for sending the indication message to be received respectively according to the trigger message.

Specifically, if the access point has agreed on a channel resource with the station to be received, the first channel determination unit 1407 determines that the station to be received sends the indication to be received according to the preset channel resource and the indication information of the station group to be received channel resources corresponding to the message, and then use the channel resources to send a pending reception indication message to the access point.

Optionally, if the access point and the stations to be received have not agreed on channel resources, the trigger message will include channel resource indication information; the second channel determination unit 1408 according to the channel resource indication information and the group of stations to be received The indication information determines the channel resource corresponding to the to-be-received indication message sent by the station to be received, and then uses the channel resource to send the to-be-received indication message to the access point.

Fig. 15 is a schematic structural diagram of an access point or station according to an embodiment of the present invention. An access point or station may include a transmitter 1510 , a receiver 1520 , a processor 1530 , a memory 1540 , a bus system 1550 .

The transmitter 1510 and the receiver 1520 are used to establish a communication channel, so that the access point or station can connect to a remote server through the communication channel, and download media data from the remote server, or upload media data to the remote server. The transmitter 1510 and the receiver 1520 may include communication modules such as a wireless local area network (Wireless Local Area Network, wireless LAN) module, a Bluetooth module, a base band (Base Band) module, and a radio frequency (Radio Frequency, RF) corresponding to the communication module. ) circuit for wireless local area network communication, bluetooth communication, infrared communication and/or cellular communication system communication, such as Wideband Code Division Multiple Access (W-CDMA) and/or High Speed Downlink Packet Access (HSDPA). The communication module is used to control the communication of each component in the access point, and can support direct memory access (Direct Memory Access).

In different implementations of the present invention, various communication modules in the transmitter 1510 and receiver 1520 generally appear in the form of integrated circuit chips (Integrated Circuit Chip), and can be selectively combined without including all communication modules. Module and corresponding antenna group. For example, the transmitter 1510 and the receiver 1520 may only include a baseband chip, a radio frequency chip and corresponding antennas to provide communication functions in a cellular communication system. Through the wireless communication connection established by the transceiver 1560, such as wireless local area network access or WCDMA access, the access point or station can be connected to a cellular network (Cellular Network) or the Internet (Internet). In some optional implementation manners of the present invention, the communication modules in the transmitter 1510 and the receiver 1520 , such as a baseband module, may be integrated into the processor 1530 .

The memory 1540 may include read-only memory and random-access memory, and provides instructions and data to the processor 1530 . A portion of memory 1540 may also include non-volatile random access memory (NVRAM).

The memory 1540 stores the following elements, executable modules or data structures, or their subsets, or their extended sets:

Operation instructions: include various operation instructions for realizing various operations.

Operating system: includes various system programs for implementing various basic services and processing hardware-based tasks.

The processor 1530 controls the operation of the access point or the station, and the processor 1530 may also be called a CPU (Central Processing Unit, central processing unit). The memory 1540 may include read-only memory and random-access memory, and provides instructions and data to the processor 1530 . A portion of memory 1540 may also include non-volatile random access memory (NVRAM). In a specific application, various components of an access point or a station are coupled together through a bus system 1550, where the bus system 1550 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for clarity of illustration, the various buses are labeled as bus system 1550 in the figure.

The methods disclosed in the foregoing embodiments of the present invention may be applied to the processor 1530 or implemented by the processor 1530 . The processor 1530 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be implemented by an integrated logic circuit of hardware in the processor 1530 or instructions in the form of software. The above-mentioned processor 1530 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the methods disclosed in the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 1540, and the processor 1530 reads the information in the memory 1540, and completes the steps of the above method in combination with its hardware.

In the embodiment of the access point, the processor 1530 executes the following operations by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system):

The processor 1530 is configured to send a broadcast message through the transmitter 1510, and the broadcast message includes: bitmap information indicating to be transmitted, first station group information to be received, sending time information of the first trigger message to be received first The station group corresponds to the first trigger message; the first trigger message is used to instruct the station to be received in the first station group to be received that supports the multi-user transmission mechanism to simultaneously send a to-be-received indication message to the access point; The station to be received is a station indicated in the TIM with downlink data; and sending the first trigger message according to the sending time information of the first trigger message;

The processor 1530 is further configured to receive, through the receiver 1520, a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism.

Optionally, the broadcast message also includes:

The station group information to be received corresponding to at least one other station group to be received except the first station group to be received.

Optionally, the broadcast message also includes:

Trigger corresponding to at least one other station group to be received except the first station group to be received The sending time information of the message.

Optionally, the site group information to be received includes:

The identification information of the first station to be received of the station group to be received, or the identification information of the station to be received at the end of the station group to be received.

Optionally, the broadcast message also includes:

Information about the number of sites to be received included in the site group to be received.

Optionally, the trigger message includes:

The sending time information of the trigger message corresponding to the next station group to be received.

Optionally, the trigger message includes: indication information of a station group to be received;

The indication information of the station group to be received includes: initial association identifier or identification information of the station group to be received, and the initial association identifier is the association identifier of the station to be received with the smallest association identifier among the stations to be received corresponding to the trigger message ;

and / or,

The indication information of the station group to be received includes: a station type indication bit table, each bit in the station type indication bit table corresponds to a station to be received in the station group to be received corresponding to the trigger message, and the station type Each bit in the indication bit table is used to indicate whether the corresponding station to be received can send the indication message to be received.

Optionally, the to-be-received station group indication information is used to indicate channel resource allocation information of a to-be-received station group corresponding to a to-be-received indication message.

Optionally, the trigger message includes:

Channel resource indication information, the channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the channel resource for sending an indication message to be received includes at least one Sending the channel resource unit of the indication message to be received at the station to be received.

For the operation process of each module in the above access point, please refer to the above method embodiment, and details will not be repeated here.

In one embodiment of the site, the processor 1530 executes the following operations by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system):

The processor 1530 is configured to receive, through the receiver 1520, a broadcast message sent by the access point, The broadcast message includes: to-be-transmitted indication bitmap (TIM) information, first station group information to be received, and sending time information of the first trigger message. The first station group to be received corresponds to the first trigger message; The trigger message is used to indicate that the to-be-received stations in the first to-be-received station group support the multi-user transmission mechanism to send a to-be-received indication message to the access point at the same time; the to-be-received stations indicate that there is a downlink The site of the data; and according to the sending time information of the first trigger message, wake up when its corresponding trigger message is sent, and receive its corresponding trigger message;

The processor 1530 is configured to send a to-be-received indication message to the access point through the transmitter 1510 according to the trigger message corresponding to the to-be-received station and using a multi-user transmission mechanism.

Optionally, the processor 1530 is further configured to determine a station group to be received and a trigger message corresponding to the station to be received according to the TIM and the first station group information to be received.

Optionally, the broadcast message further includes: station group information to be received corresponding to each station group to be received except the first station group to be received;

The site also includes:

The processor 1530 is further configured to determine the station group to be received corresponding to the station to be received and the trigger message according to the TIM and the station group information corresponding to each station group to be received.

Optionally, the trigger message includes: sending time information of the trigger message corresponding to the next station group to be received;

1) The receiver 1520 wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

2) The processor 1530 judges whether the trigger message currently received is the trigger message corresponding to the station to be received, and if so, stops the process of receiving the trigger message; if not, executes step 3);

3) The receiver 1520 receives the trigger message corresponding to the next site group to be received according to the sending time information of the trigger message corresponding to the next site group to be received included in the currently received trigger message and performs step 2).

Optionally, the trigger message includes: indication information of the site group to be received and sending time information of the trigger message corresponding to the next site group to be received;

1) The receiver 1520 wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message;

2) The processor 1530 judges whether the currently received trigger message includes the station to be received point corresponding station group indication information to be received, if not, then perform step 3); if so, then perform step 4);

3) The receiver 1520 receives the trigger message corresponding to the next site group to be received according to the sending time information of the trigger message corresponding to the next site group to be received included in the currently received trigger message, and performs step 2);

4) The receiver 1520 determines that the currently received trigger message is the trigger message corresponding to the station to be received, and stops the process of receiving the trigger message.

Optionally, the trigger message includes: station group indication information to be received, where the station group indication information to be received is used to indicate allocation information of channel resources of a station group to be received corresponding to the indication message to be received;

The processor 1530 is further configured to determine, according to the preset channel resource and the indication information of the station group to be received, the channel resource corresponding to the station to be received sending the indication message to be received,

The transmitter 1510 is specifically configured to use the channel resource determined by the first channel determination unit to send a to-be-received indication message to the access point.

Optionally, the trigger message includes: channel resource indication information, station group indication information to be received;

The channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the channel resource for sending an indication message to be received includes at least one channel resource for the to-be-received indication message The station sends the channel resource unit of the indication message to be received;

The indication information of the station group to be received is used to indicate the channel resource allocation information corresponding to a station group to be received for sending the indication message to be received;

The processor 1530 also determines, according to the channel resource indication information and the to-be-received station group indication information, the channel resource corresponding to the to-be-received station sending the to-be-received indication message;

The transmitter 1510 is specifically configured to use the channel resource determined by the second channel determination unit to send a to-be-received indication message to the access point.

For the operation process of each module in the above site, please refer to the above method embodiment, which will not be repeated here.

In another embodiment of the station, the processor 1530 executes the following operations by calling the operation instruction stored in the memory 1540 (the operation instruction can be stored in the operating system):

The processor 1530 is configured to receive, through the receiver 1520, a broadcast message sent by the access point, where the broadcast message includes: to-be-transmitted indication bitmap (TIM) information, group information of at least two stations to be received information, the sending time information of the trigger messages corresponding to at least two station groups to be received; the first trigger message is used to indicate that the stations to be received in the first station group to be received that support the multi-user transmission mechanism simultaneously send The entry point sends an indication message to be received; the station to be received is a station that indicates that there is downlink data in the TIM; and according to the sending time information of the trigger message corresponding to the at least two station groups to be received, in its corresponding Wake up when the trigger message is sent, and receive its corresponding trigger message;

The processor 1530 is configured to send a to-be-received indication message to the access point through the transmitter 1510 according to the trigger message corresponding to the to-be-received station and using a multi-user transmission mechanism.

Optionally, the trigger message includes: station group indication information to be received, where the station group indication information to be received is used to indicate allocation information of channel resources of a station group to be received corresponding to the indication message to be received;

The processor 1530 is further configured to determine, according to the preset channel resource and the indication information of the station group to be received, the channel resource corresponding to the station to be received sending the indication message to be received,

The transmitter 1510 is specifically configured to use the channel resource determined by the first channel determination unit to send a to-be-received indication message to the access point.

Optionally, the trigger message includes: channel resource indication information, station group indication information to be received;

The channel resource indication information is indication information of a channel resource corresponding to the trigger message for a station group to be received to send an indication message to be received, and the channel resource for sending an indication message to be received includes at least one channel resource for the to-be-received indication message The station sends the channel resource unit of the indication message to be received;

The indication information of the station group to be received is used to indicate the channel resource allocation information corresponding to a station group to be received for sending the indication message to be received;

The processor 1530 also determines, according to the channel resource indication information and the to-be-received station group indication information, the channel resource corresponding to the to-be-received station sending the to-be-received indication message;

The transmitter 1510 is specifically configured to use the channel resource determined by the second channel determination unit to send a to-be-received indication message to the access point.

For the operation process of each module in the above site, please refer to the above method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or may be integrated into another system, or some features may to ignore, or not execute. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (35)

A method for transmitting an indication message to be received, comprising: The access point sends a broadcast message, where the broadcast message includes: to-be-transmitted indication bitmap TIM information, first station group information to be received, and sending time information of a first trigger message, where the first station group to be received corresponds to the first A trigger message; the first trigger message is used to indicate that the to-be-received stations in the first to-be-received station group that support the multi-user transmission mechanism simultaneously send a to-be-received indication message to the access point; the to-be-received stations are Indicate a station with downlink data in the TIM; The access point sends the first trigger message according to the sending time information of the first trigger message; The access point receives a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism. The method according to claim 1, wherein the station group information to be received includes: The identification information of the first station to be received of the station group to be received, or the identification information of the station to be received at the end of the station group to be received. The method according to claim 1, wherein the broadcast message further comprises: Information about the number of sites to be received included in the site group to be received. The method according to claim 1, wherein the first trigger message comprises: The sending time information of the second trigger message, where the second trigger message is used to instruct the stations to be received that support the multi-user transmission mechanism in the second station group to be received to simultaneously send a to-be-received indication message to the access point. The method according to claim 1, characterized in that, The first trigger message includes: indication information of the first station group to be received; The first to-be-received station group indication information includes: a first initial association identifier or first to-be-received station group identification information, and the first initial association identifier is a waiting group with the smallest association identifier in the first to-be-received station group. Receiving site's associated identification; and / or, The first station group indication information to be received includes a station type indication bit table, and each bit in the station type indication bit table corresponds to a station to be received in the first station group to be received, and the station Each bit in the type indication bit table is used to indicate whether the corresponding to-be-received station can send the to-be-received indication message. The method according to claim 5, wherein the indication information of the first station group to be received includes: allocation information indicating the channel resource of the indication message to be received corresponding to the first station group to be received. The method according to claims 1-6, wherein the first trigger message includes: The first channel resource indication information, the first channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource includes the channel resource for the first station group to be received The channel resource unit to which the to-be-received station sends the to-be-received indication message. A method for transmitting an indication message to be received, comprising: The station to be received receives the broadcast message sent by the access point, and the broadcast message includes: TIM information of the indication bitmap to be transmitted, information of the first station group to be received, and sending time information of the first trigger message, wherein the first station to be received The group corresponds to the first trigger message; the first trigger message is used to instruct the to-be-received stations in the first to-be-received station group that support the multi-user transmission mechanism to simultaneously send a to-be-received indication message to the access point; The station to be received is a station indicated in the TIM that there is downlink data; The station to be received wakes up when the trigger message corresponding to the station to be received is sent according to the sending time information of the first trigger message, and receives the trigger message corresponding to the station to be received; The station to be received sends a to-be-received indication message to the access point according to the trigger message corresponding to the station to be received and using a multi-user transmission mechanism. The method according to claim 8, characterized in that before receiving the trigger message corresponding to the station to be received, comprising: The station to be received determines the station group to be received and the trigger message corresponding to the station to be received according to the TIM and the first station group information to be received; The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message; The station to be received determines that the first trigger message is a trigger message corresponding to the station to be received, and sends a to-be-received indication message to the access point by using a multi-user transmission mechanism. The method according to claim 8, characterized in that, The broadcast message also includes: information about station groups to be received corresponding to each station group to be received except the first station group to be received; Before receiving the trigger message corresponding to the station to be received, it includes: The station to be received determines the station group to be received and the trigger message corresponding to the station to be received according to the TIM and the station group information to be received corresponding to each station group to be received; The first trigger message includes: sending time information of the second trigger message, and the second trigger message is used to indicate that the stations to be received in the second group of stations to be received that support the multi-user transmission mechanism simultaneously send to the access point To receive the indication message; According to the sending time information of the first trigger message, the station to be received wakes up when the trigger message corresponding to the station to be received is sent, and receives the trigger message corresponding to the station to be received, including: The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message; The station to be received judges whether the first trigger message is the trigger message corresponding to the station to be received, and if so, uses a multi-user transmission mechanism to send a message to be received to the access point; if not, the station to be received The station receives the trigger message corresponding to the second to-be-received station group according to the sending time information of the second trigger message included in the first trigger message. The method according to claim 8, characterized in that, The first trigger message includes: the indication information of the first station group to be received and the sending time information of the second trigger message, and the second trigger message is used to indicate that the station group supporting the multi-user transmission mechanism in the second station group to be received is to be received. The station simultaneously sends an indication message to be received to the access point; According to the sending time information of the first trigger message, the station to be received wakes up when the trigger message corresponding to the station to be received is sent, and receives the trigger message corresponding to the station to be received, including: The station to be received wakes up when the first trigger message is sent according to the sending time information of the first trigger message, and receives the first trigger message; The station to be received determines whether the first trigger message includes the station group indication information corresponding to the station to be received, and if not, the station to be received according to the first trigger message included in the first trigger message 2. Sending time information of the trigger message, receiving the trigger message corresponding to the second to-be-received site group; if so, sending a to-be-received indication message to the access point by using a multi-user transmission mechanism. The method according to claim 8, characterized in that, The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resource allocation information indicating the to-be-received indication message corresponding to the first to-be-received site group; The station to be received uses a multi-user transmission mechanism to send a message to be received to the access point according to the trigger message corresponding to the station to be received, including: The station to be received determines the channel resource corresponding to the station to be received to send the indication message to be received according to the indication information of the first station group to be received; The station to be received sends a to-be-received indication message to the access point by using the channel resource. The method according to claim 8, characterized in that, The first trigger message includes: first channel resource indication information, first station group indication information to be received; The channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource includes information for the station to be received in the first station group to be received to send the indication message to be received channel resource unit; The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received; The to-be-received station sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station, including: The station to be received determines, according to the first channel resource indication information and the first station group indication information to be received, the channel resource corresponding to the station to be received sending the indication message to be received; The station to be received sends a to-be-received indication message to the access point by using the channel resource. A method for transmitting an indication message to be received, comprising: The station to be received receives the broadcast message sent by the access point, and the broadcast message includes: information about the bitmap TIM to be transmitted, information of at least two station groups to be received, and sending time information of trigger messages corresponding to at least two station groups to be received , wherein, the first station group to be received corresponds to the first trigger message; the first trigger message is used to instruct the stations to be received in the first station group to be received that support the multi-user transmission mechanism to simultaneously send the access point to send an indication message to be received; the station to be received is a station indicating that there is downlink data in the TIM; The station to be received according to the sending of the trigger message corresponding to the at least two station groups to be received Time information, wake up when the trigger message corresponding to the station to be received is sent, and receive the trigger message corresponding to the station to be received; The station to be received sends a to-be-received indication message to the access point according to the trigger message corresponding to the station to be received and using a multi-user transmission mechanism. The method according to claim 14, characterized in that, The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resource allocation information indicating the to-be-received indication message corresponding to the first to-be-received site group; The to-be-received station sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station, including: The station to be received determines the channel resource corresponding to the station to be received to send the indication message to be received according to the indication information of the first station group to be received; The station to be received sends a to-be-received indication message to the access point by using the channel resource. The method according to claim 14, characterized in that, The first trigger message includes: first channel resource indication information, first station group indication information to be received; The channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource for sending the indication message to be received includes the station to be received for the first station group to be received Send the channel resource unit of the indication message to be received; The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received; The to-be-received station sends a to-be-received indication message to the access point using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station, including: The station to be received determines, according to the channel resource indication information and the first station group indication information to be received, the channel resource corresponding to the station to be received sending the indication message to be received; The station to be received sends a to-be-received indication message to the access point by using the channel resource. An access point, characterized in that it comprises: A sending unit, configured to send a broadcast message, where the broadcast message includes: TIM information of an indication bitmap to be transmitted, first station group information to be received, and sending time information of a first trigger message, wherein the first station group to be received The receiving station group corresponds to the first trigger message; the first trigger message is used to instruct the station to be received in the first station group to be received that supports the multi-user transmission mechanism to simultaneously send a to-be-received indication message to the access point ; The station to be received is a station indicated in the TIM that there is downlink data; The sending unit is further configured to send the first trigger message according to the sending time information of the first trigger message; The receiving unit is configured to receive a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism. The access point according to claim 17, wherein the station group information to be received includes: The identification information of the first station to be received of the station group to be received, or the identification information of the station to be received at the end of the station group to be received. The access point according to claim 17, wherein the broadcast message further includes: Information about the number of sites to be received included in the site group to be received. The access point according to claim 17, wherein the first trigger message includes: The sending time information of the second trigger message, where the second trigger message is used to instruct the stations to be received that support the multi-user transmission mechanism in the second station group to be received to simultaneously send a to-be-received indication message to the access point. The access point according to claim 17, characterized in that, The first trigger message includes: indication information of the first station group to be received; The first to-be-received station group indication information includes: a first initial association identifier or first to-be-received station group identification information, and the first initial association identifier is a waiting group with the smallest association identifier in the first to-be-received station group. Receiving site's associated identification; and / or, The indication information of the first station group to be received includes: a station type indication bit table, each bit in the station type indication bit table corresponds to a station to be received in the first station group to be received, and the station type Each bit in the indication bit table is used to indicate whether the corresponding station to be received can send the indication message to be received. The access point according to claim 21, wherein the first station to be received The group indication information also includes allocation information indicating the channel resource of the indication message to be received corresponding to the first station group to be received. The access point according to claims 17-22, wherein the first trigger message includes: The first channel resource indication information, the first channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource includes the channel resource for the first station group to be received The channel resource unit to which the to-be-received station sends the to-be-received indication message. A site, characterized by comprising: A message receiving unit, configured to receive a broadcast message sent by an access point, where the broadcast message includes: TIM information of an indication bitmap to be transmitted, first station group information to be received, and sending time information of a first trigger message, wherein the first The station group to be received corresponds to the first trigger message; the first trigger message is used to instruct the stations to be received in the first station group to be received that support the multi-user transmission mechanism to simultaneously send a to-be-received indication to the access point message; the station to be received is a station indicating that there is downlink data in the TIM; The message receiving unit is further configured to wake up when its corresponding trigger message is sent according to the sending time information of the first trigger message, and receive its corresponding trigger message; A message sending unit, configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station. The site according to claim 24, wherein the site further comprises: A first determining unit, configured to determine a station group to be received and a trigger message corresponding to the station to be received according to the TIM and the first station group information to be received. The station of claim 24, wherein, The broadcast message further includes: information about station groups to be received corresponding to at least two station groups to be received other than the first station group to be received; The site also includes: The second determining unit is configured to determine the station group to be received corresponding to the station to be received and the trigger message according to the TIM and at least two station group information to be received corresponding to the station group to be received; The station also includes: a first judging unit; The first trigger message includes: sending time information of the second trigger message, and the second trigger message The information is used to indicate that the stations to be received in the second group of stations to be received that support the multi-user transmission mechanism simultaneously send a to-be-received indication message to the access point; The first judging unit is configured to judge the first trigger after the message receiving unit wakes up when the first trigger message is sent and receives the first trigger message according to the sending time information of the first trigger message. Whether the message is a trigger message corresponding to the station to be received; The message sending unit is specifically configured to, when the first trigger message is a trigger message corresponding to the station to be received, use a multi-user transmission mechanism to send the message to the access point according to the trigger message corresponding to the station to be received To receive the indication message; The message receiving unit is further configured to receive the second trigger message to be received according to the sending time information of the second trigger message in the first trigger message when the first trigger message is not the trigger message corresponding to the station to be received. The trigger message corresponding to the site group. The station of claim 24, wherein, The station also includes: a second judging unit; The first trigger message includes: the indication information of the first station group to be received and the sending time information of the second trigger message, and the second trigger message is used to indicate that the station group supporting the multi-user transmission mechanism in the second station group to be received is to be received. The station simultaneously sends an indication message to be received to the access point; The second judging unit is configured to judge the first trigger after the message receiving unit wakes up when the first trigger message is sent and receives the first trigger message according to the sending time information of the first trigger message. Whether the message includes the indication information of the station group to be received corresponding to the station to be received. The message sending unit is specifically configured to: when the first trigger message includes the indication information of the station group to be received corresponding to the station to be received Using a multi-user transmission mechanism to send an indication message to be received to the access point according to the trigger message corresponding to the station to be received; The message receiving unit is further configured to, when the first trigger message does not include the indication information of the station group to be received corresponding to the station to be received, according to the sending time information of the second trigger message in the first trigger message , receiving a trigger message corresponding to the second station group to be received. The station of claim 24, wherein, The station also includes: a first channel determination unit; The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resources indicating the to-be-received indication message corresponding to the first to-be-received site group distribution information; The first channel determining unit is used for the first station group indication information to be received to determine the channel resource corresponding to the station to be received sending the indication message to be received, The message sending unit is specifically configured to: use the channel resource determined by the first channel determining unit to send a to-be-received indication message to the access point. The station of claim 24, wherein, The station also includes: a second channel determination unit; The first trigger message includes: first channel resource indication information, first station group indication information to be received; The first channel resource indication information is the indication information of the channel resource for the first station group to be received to send the indication message to be received, and the channel resource for sending the indication message to be received includes the channel resource for the first station group to be received The receiving station sends the channel resource unit of the indication message to be received; The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received; The second channel determining unit determines, according to the first channel resource indication information and the first to-be-received station group indication information, the channel resource corresponding to the to-be-received station sending the to-be-received indication message; The message sending unit is specifically configured to: use the channel resource determined by the second channel determining unit, and use a multi-user transmission mechanism to send a to-be-received indication message to the access point. A site, characterized by comprising: The message receiving unit is used to receive the broadcast message sent by the access point, the broadcast message includes: the information to be transmitted indicating bitmap TIM information of at least two station groups to be received, and the sending of trigger messages corresponding to at least two station groups to be received Time information, wherein, the first station group to be received corresponds to the first trigger message; the first trigger message is used to indicate that the stations to be received in the first station group to be received that support the multi-user transmission mechanism simultaneously send the The access point sends an indication message to be received; the station to be received is a station indicating that there is downlink data in the TIM; The message receiving unit is further configured to wake up when the trigger message corresponding to the station to be received is sent according to the sending time information of the trigger message corresponding to the at least two station groups to be received, and receive the message corresponding to the station to be received trigger message; A message sending unit, configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the station to be received. The station of claim 30, wherein, The station also includes: a first channel determination unit; The first trigger message includes: first to-be-received site group indication information, the first to-be-received site group indication information includes channel resource allocation information indicating the to-be-received indication message corresponding to the first to-be-received site group; The first channel determination unit is configured to determine, according to the indication information of the first station group to be received, the channel resources corresponding to the station to be received sending the indication message to be received; The message sending unit is specifically configured to: use the channel resource determined by the first channel determining unit, and use a multi-user transmission mechanism to send a to-be-received indication message to the access point. The station of claim 30, wherein, The station also includes: a second channel determination unit; The first trigger message includes: first channel resource indication information, first station group indication information to be received; The first channel resource indication information is the indication information of the channel resource of the first station group to be received to send the indication message to be received, and the channel resource for sending the indication message to be received includes the channel resource to be received for the first station group to be received The station sends the channel resource unit of the indication message to be received; The indication information of the first station group to be received includes allocation information indicating the channel resources corresponding to the first station group to be received for sending the indication message to be received; The second channel determination unit determines the channel resource corresponding to the station to be received sending the indication message to be received according to the channel resource indication information and the first station group indication information to be received; The message sending unit is specifically configured to: use the channel resource determined by the second channel determining unit, and use a multi-user transmission mechanism to send a to-be-received indication message to the access point. An access point, characterized in that it comprises: transmitters, receivers and processors; The processor is configured to send a broadcast message through the transmitter, and the broadcast message includes: to-be-transmitted indication bitmap TIM information, first to-be-received site group information, and sending time information of a first trigger message, wherein the first to-be-transmitted The receiving site group corresponds to the first trigger message; the first trigger message is used to Instructing the stations to be received in the first group of stations to be received that support the multi-user transmission mechanism to simultaneously send an indication message to be received to the access point; the stations to be received are the stations indicated in the TIM to have downlink data; and sending the first trigger message according to the sending time information of the first trigger message; The processor is further configured to receive, through the receiver, a to-be-received indication message sent by at least one to-be-received station in the first to-be-received station group according to the first trigger message and using a multi-user transmission mechanism. A station, characterized by comprising: a transmitter, a receiver and a processor; The processor is configured to receive, through the receiver, a broadcast message sent by the access point, where the broadcast message includes: to-be-transmitted indication bitmap TIM information, first station group information to be received, and sending time information of the first trigger message, Wherein, the first station group to be received corresponds to the first trigger message; the first trigger message is used to indicate that the stations to be received in the first station group to be received that support the multi-user transmission mechanism simultaneously send a message to the access point Sending an indication message to be received; the station to be received is a station indicating that there is downlink data in the TIM; and according to the sending time information of the first trigger message, it wakes up when its corresponding trigger message is sent, and receives its own The corresponding trigger message; The processor is configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station through the transmitter. A station, characterized by comprising: a transmitter, a receiver and a processor; The processor is configured to receive, through the receiver, a broadcast message sent by the access point, where the broadcast message includes: to-be-transmitted indication bitmap TIM information, at least two station group information to be received, and at least two station group correspondences to be received The sending time information of the trigger message, wherein, the first station group to be received corresponds to the first trigger message; the first trigger message is used to indicate that the station group supporting the multi-user transmission mechanism in the first station group to be received is to be received The station sends an indication message to be received to the access point at the same time; the station to be received is a station indicating that there is downlink data in the TIM; and according to the sending time information of its corresponding trigger message, in its corresponding trigger message Wake up when sending, and receive its corresponding trigger message; The processor is configured to send a to-be-received indication message to the access point by using a multi-user transmission mechanism according to the trigger message corresponding to the to-be-received station through the transmitter.