CN106102183B

CN106102183B - A kind of method and access point, website sending response message

Info

Publication number: CN106102183B
Application number: CN201510731891.2A
Authority: CN
Inventors: 丁志明; 树贵明; 杜振国
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-04-29
Filing date: 2015-10-31
Publication date: 2019-09-20
Anticipated expiration: 2035-10-31
Also published as: CN106102183A

Abstract

The present invention provides a kind of method and device for sending response message, the method for the present invention includes: that access point AP receives at least two site STAs upper request message sent in different time points respectively；Execute following steps for STA each at least two STA: AP determines the first information and the second information；AP instructs ACK frame to send the first information and the second information to STA by the correct response of the request message for replying STA；AP sends response message when reaching the temporal information corresponding time, to STA.

Description

A kind of method and access point, website sending response message

Technical field

The present invention relates to wireless communication field more particularly to a kind of methods and access point, website for sending response message.

Background technique

Wireless Fidelity (English: Wireless Fidelity, referred to as: WiFi) technical standard " IEEE 802.11-2012 " It is a kind of wireless communication standard based on time-division and competition, is pointed out in standard, under any circumstance, one is ready for sending message Website (English: Station, referred to as: STA) or access point (English: Access Point, referred to as: AP) need to take competition machine System sends message.

STA or AP sends message process using competition mechanism and is known as backoff procedure, in order to avoid due to two WiFi equipment sends message simultaneously and clashes the problem of caused communication can not carry out.But backoff procedure cannot be kept away completely Exempt from the generation of information transmission conflict, to further avoid information transmission conflict problem, message sink end can disappear receiving one Acknowledgement frame, that is, correct response instruction (English: Acknowledge, letter is sent to message sending end within the scope of predetermined time after breath Claim: ACK), which is properly received with instruction message receiving end, otherwise, message sending end decision message clashes.

As shown in Figure 1, in the next basic service set of single user communication mechanism (English: Basic Service Set, letter Claim: BSS) in message request and response process in, each STA (including STA1, STA2 and STA3) sequentially to AP transmission ask Message is sought, AP is also sequentially to send response message, in the process, each request message and response message to each STA It needs to send by competition mechanism, the box of request message or response message left side oblique line portion is used for indicating in Fig. 1 Backoff procedure under competition mechanism.Under single user communication mechanism, since each message is required to keep out of the way before sending, so that Competitive channel access times are more, and channel resource is caused to waste.

Descending multi-user communication mechanism is introduced in " IEEE 802.11ac ", i.e. under AP can be sent to multiple STA simultaneously Row message.For example, as shown in Fig. 2, in the message request and response process in the next BSS of descending multi-user communication mechanism, STA1, STA2 and STA3 sequentially send request message 1, request message 2 and request message 3 to AP respectively, for request message 1, request message 2 and request message 3, AP send multi-user's response message to STA1, STA2 and STA3 simultaneously and reply, in this way Can in reduction system competitive channel access times, to improve the utilization rate of channel.

Figure it is seen that if AP determine using multi-user's response message to it is multiple issue request messages STA simultaneously It is replied, then means that AP will not issue multi-user's response message to STA immediately after receiving request message, but can event Meaning delay a period of time, to be collected into the request message of multiple STA again while to send multi-user's response message.Since STA is removed Receive ACK frame acknowledgment AP receive be not aware that except request message AP using multi-user's response message and how long after Multi-user's response message can be sent, therefore wake states can only be kept, STA can not during waiting AP to be received to send response message It is communicated with other equipment, suspend mode can not be selected to achieve the purpose that power saving.

Summary of the invention

The embodiment of the invention provides a kind of method and devices for sending response message, are directed at least two stations to realize The request message that point is sent, during access point is replied using multi-user's response message, website can be with other equipment It is communicated to promote working efficiency or website selection suspend mode to save electric energy.Certainly, if access point is in estimated transmission The time point of multi-user's response message receives only the request message of a website when reaching, then single user message pair can be used The website for sending request message is replied, alternatively, multi-user message also can be used, the multi-user in this case disappears Breath can also be able to include to other not sent requests not merely comprising the response message to the website for having sent request message The data etc. that the website of message is sent.

In a first aspect, the embodiment of the present invention provides a kind of method for sending response message, which is characterized in that this method packet It includes:

The request message that access point AP receiving station STA is sent；

After receiving the request message that the STA is sent, Xiang Suoshu STA is sent for indicating to have correctly received the AP The correct response of the request message of the STA instructs ACK frame, and the ACK frame carries the first information and the second information, and described the One information is used to indicate that the AP postpones to send to the STA to the STA and disappears for responding the response of the request message of the STA Breath, second information indicate the temporal information that the AP sends the response message, for indicating to the STA described Before the transmission time points that AP sends the response message arrive, time span that the STA is needed to wait for；

When the transmission time points of the response message reach, if the AP receives the request of at least two STA transmission Message, then the AP sends response message at least two STA using the mode of multi-user message simultaneously；If the AP is only The request message of STA transmission is received, then the AP sends the response to the STA using the mode of single user message Message, or, the AP sends multi-user message to the STA, it include the response message in the multi-user message.

With reference to first aspect, in the first implementation, the AP is by the ACK frame to described in STA transmission The first information and second information, comprising:

The first information and second information are carried in the preset field of the ACK frame by the AP；

The ACK frame for carrying the first information and second information is sent to the STA by the AP.

The first implementation with reference to first aspect, it is pre- in ACK frame in second of implementation of first aspect If field includes at least two in following field:

More segmentation indicating fields retry indication field, frame protection indication field and sequence indication field.

The first implementation with reference to first aspect, in the third implementation of first aspect, ACK frame is to be based on The frame format of control frame is encapsulated, carrying the preset field of the first information in ACK frame is frame sub-type field.

With reference to first aspect or first aspect the first any of to the third implementation, in first aspect The 4th kind of implementation in, the temporal information is the transmission time points of the estimated response message, or, being the access Point sends the delay time length of the response message according to preset delay to determine, or, being described access point according to reception To the request message time point and it is expected that the time difference of transmission time points of the response message determine, or, be Described access point according to the sending time point of the ACK frame and it is expected that the response message transmission time points time difference To determine.

Second aspect, the embodiment of the present invention provide a kind of method for sending response message, this method comprises:

Site STA sends request message to access point AP；

The STA receives the correct response for the request message for indicating to have correctly received the STA that the AP is sent ACK frame is instructed, the ACK frame carries the first information and the second information, and the first information is used to indicate the AP to the STA Postpone to send the response message for responding the request message of the STA to the STA, second information indicates the AP The temporal information for sending the response message, for indicating to the STA when the AP sends the transmission of the response message Between before point arrives, time span that the STA is needed to wait for；

The STA receives the AP when reaching the temporal information corresponding time with single user message or multi-user The response message that the mode of message is sent.

In conjunction with second aspect, in the first implementation, this method further include:

STA before temporal information that the second information the indicates corresponding time reaches in a dormant state.

In conjunction with the first of second aspect or second aspect implementation, in second of implementation of second aspect, The first information and the second information are carried in the preset field of ACK frame.

In conjunction with second of implementation of second aspect, in the third implementation of second aspect, ACK frame is preset Field includes at least two in following field:

In conjunction with second of implementation of second aspect, in the 4th kind of implementation of second aspect, ACK frame is to be based on The frame format of control frame is encapsulated, carrying the preset field of the first information in ACK frame is frame sub-type field.

The third aspect, the embodiment of the present invention provide a kind of method for sending response message, this method comprises:

Access point AP sends broadcast frame, so that site STA receives the broadcast frame, carries the AP's in the broadcast frame Descending multi-user message transmission time information；

The AP receives the request message that STA is sent after receiving the broadcast frame；

The AP is after the request message for receiving STA transmission by for indicating to have correctly received the STA's The correct response of request message instructs ACK frame to send instruction information to the STA, and the instruction information is used to indicate to the STA The AP is sent to the STA for responding the STA in the descending multi-user message transmission time information corresponding time The response message of the request message of transmission；

When reaching the descending multi-user message transmission time information corresponding time, if the AP receives at least two The request message that a STA is sent, then the AP is sent simultaneously at least two STA using the mode of multi-user message and is respectively asked Seek the corresponding response message of message；If the AP only receives the request message of STA transmission, the AP uses single user The mode of message sends the response message to the STA, or, the AP sends multi-user message to the STA, it is described multi-purpose It include the response message in the message of family.

Wherein, the descending multi-user message transmission time information, which can be, indicates the estimated multi-user message The time span of transmission time points or the transmission time points apart from the estimated multi-user message.

In conjunction with the third aspect, in the first implementation, the AP sends instruction information to STA by the ACK frame, Include:

AP will indicate that information is carried in the preset field of ACK frame；

The ACK frame for carrying instruction information is sent to STA by AP.

It is pre- in ACK frame in second of implementation of the third aspect in conjunction with the first implementation of the third aspect If field includes any one in following fields:

Fourth aspect, the embodiment of the present invention provide a kind of method for sending response message, this method comprises:

Site STA receives the broadcast frame that access point AP is sent, and the descending multi-user that the AP is carried in the broadcast frame disappears Cease transmission time information；

The STA sends request message to the AP after receiving the broadcast frame；

The STA receives the correct response instruction for being used to indicate to have correctly received the request message that the AP is sent ACK frame, the ACK frame carry instruction information, and the instruction information is used to indicate that the AP is multi-purpose in the downlink to the STA The family message transmission time information corresponding time sends the response message for responding the request message to the STA；

The STA when reaching the descending multi-user message transmission time information corresponding time, receive the AP with The response message that the mode of single user message or multi-user message is sent.

In conjunction with fourth aspect, in the first implementation, this method further include:

STA before descending multi-user message transmission time information corresponding time reaches in a dormant state.

In conjunction with the first of fourth aspect or fourth aspect implementation, in second of implementation of fourth aspect, Instruction information is carried in the preset field of ACK frame, the preset field in ACK frame includes any one in following fields:

5th aspect, the embodiment of the present invention provide a kind of access point AP, comprising:

Transceiver, the request message sent for receiving station STA；

It is also used to after receiving the request message that the STA is sent, Xiang Suoshu STA is sent for indicating to have correctly received The correct response of the request message of the STA instructs ACK frame, and the ACK frame carries the first information and the second information, and described the One information is used to indicate that the AP postpones to send to the STA to the STA and disappears for responding the response of the request message of the STA Breath, second information indicate the temporal information that the AP sends the response message, for indicating to the STA described Before the transmission time points that AP sends the response message arrive, time span that the STA is needed to wait for；

Processor, in the transmission time points arrival of the response message, if the transceiver is at least two The request message that a STA is sent, then control the transceiver using the mode of multi-user message at least two STA simultaneously Send response message；Alternatively, for when the transmission time points of the response message reach, if the transceiver only receives one The request message that a STA is sent then controls the transceiver using the mode of single user message and sends the response to the STA Message sends multi-user message to the STA or, controlling the transceiver, includes that the response disappears in the multi-user message Breath.

In conjunction with the 5th aspect, in the first implementation, the transceiver is sending the to STA by the ACK frame When one information and the second information, it is specifically used for:

The first information and second information are carried in the preset field of ACK frame；

The ACK frame for carrying the first information and the second information is sent to STA.

It is pre- in ACK frame in second of implementation of the 5th aspect in conjunction with the first implementation of the 5th aspect If field includes at least two in following field:

In conjunction with the first implementation of the 5th aspect, in the third implementation of the 5th aspect, ACK frame is to be based on The frame format of control frame is encapsulated, carrying the preset field of the first information in ACK frame is frame sub-type field.

In conjunction with any of the first of the 5th aspect or the 5th aspect to the third implementation, at the 5th aspect The 4th kind of implementation in, the temporal information is the transmission time points of the estimated response message, or, being the processing Device sends the delay time length of the response message according to preset delay to determine, or, being the processor according to reception To the request message time point and it is expected that the time difference of transmission time points of the response message determine, or, be The processor according to the sending time point of the ACK frame and it is expected that the response message transmission time points time difference To determine.

6th aspect, the embodiment of the present invention provides a kind of site STA, which is characterized in that the STA includes:

Transceiver, for sending request message to access point AP；The expression that is used for that the AP is sent is received to have correctly received The correct response of the request message of the STA instructs ACK frame, and the ACK frame carries the first information and the second information, and described the One information is used to indicate that the AP postpones to send the response message for responding the request message, institute to the STA to the STA It states the second information and indicates the temporal information that the AP sends the response message, for being sent out to STA instruction in the AP Before sending the transmission time points of the response message to arrive, time span that the STA is needed to wait for；

Processor is arrived for controlling the transceiver in the temporal information corresponding time that second information indicates Up to when, receive the response message that the AP is sent in a manner of single user message or multi-user message.

In conjunction with the 6th aspect, in the first implementation, the processor is also used to:

Before the temporal information corresponding time of the second information instruction reaches, controls the STA and be in suspend mode shape State.

In conjunction with the first implementation of the 6th aspect or the 6th aspect, in second of implementation of the 6th aspect, The first information and the second information are carried in the preset field of ACK frame.

In conjunction with second of implementation of the 6th aspect, in the third implementation of the 6th aspect, ACK frame is preset Field includes at least two in following field:

In conjunction with second of implementation of the 6th aspect, in the 4th kind of implementation of the 6th aspect, ACK frame is to be based on The frame format of control frame is encapsulated, carrying the preset field of the first information in ACK frame is frame sub-type field.

7th aspect, the embodiment of the present invention provide a kind of access point AP, comprising:

Transceiver, for sending broadcast frame, so that site STA receives the broadcast frame, in the broadcast frame described in carrying The descending multi-user message transmission time information of AP；Receive the request message that STA is sent after receiving the broadcast frame；It is connecing Pass through the correct response for being used for the request message for indicating to have correctly received the STA after receiving the request message of STA transmission ACK frame is instructed to send instruction information to the STA, the instruction information is used to indicate that the AP is more in the downlink to the STA The user message transmission time information corresponding time sends the sound for responding the request message that the STA is sent to the STA Answer message；

Processor is used for when reaching the descending multi-user message transmission time information corresponding time, if the receipts Hair machine receives the request message of at least two STA transmission, then controls the transceiver and use the mode of multi-user message to institute It states at least two STA while sending the corresponding response message of each request message；If alternatively, only receiving one for the transceiver The request message that a STA is sent then controls the transceiver using the mode of single user message and sends the response to the STA Message sends multi-user message to the STA or, controlling the transceiver, includes that the response disappears in the multi-user message Breath.

In conjunction with the 7th aspect, in the first implementation, the transceiver by the ACK frame to STA for being sent out When sending instruction information, it is specifically used for:

The instruction information that the processor determines is carried in the preset field of ACK frame；

The ACK frame for carrying instruction information is sent to STA.

In conjunction with the first implementation of the 7th aspect, in second of implementation of the 7th aspect,

Preset field in ACK frame includes any one in following fields:

Eighth aspect, the embodiment of the present invention provide a kind of STA, comprising:

Transceiver, for receiving the broadcast frame of access point AP transmission, the downlink that the AP is carried in the broadcast frame is multi-purpose Family message transmission time information；Request message is sent to the AP after receiving the broadcast frame；Receive what the AP was sent For indicating that the correct response for having correctly received the request message instructs ACK frame, the ACK frame carries instruction information, institute Stating instruction information is used to indicate the AP in the descending multi-user message transmission time information corresponding time to institute to the STA It states STA and sends response message for responding the request message；

Processor is arrived for controlling the transceiver in the descending multi-user message transmission time information corresponding time Up to when, receive the response message that the AP is sent in a manner of single user message or multi-user message.

In conjunction with eighth aspect, in the first implementation, the processor is also used to:

The STA is controlled before the descending multi-user message transmission time information corresponding time reaches in suspend mode shape State.

In conjunction with the first of eighth aspect or eighth aspect implementation, in second of implementation of eighth aspect, Instruction information is carried in the preset field of ACK frame, the preset field in ACK frame includes any one in following fields:

9th aspect, the embodiment of the present invention provide a kind of AP, comprising:

Transceiver, for receiving at least two site STAs upper request message sent in different time points respectively；

Processor, for determining that the first information and the second information, the first information are used for each STA at least two STA The response message for responding the request message of STA, the second letter are sent to STA using multi-user's response mode in instruction transceiver Breath is used to indicate the temporal information that transceiver sends response message；

Transceiver is also used to pass through the correct of the request message for replying STA for each STA at least two STA Response instructs ACK frame to send the first information and the second information to STA；When reaching the temporal information corresponding time, sent to STA Response message.

In conjunction with the 9th aspect, in the first implementation, transceiver is passing through the request message for replying STA When ACK frame sends the first information and the second information to STA, it is specifically used for:

The determining first information of processor and the second information are carried in the preset field of ACK frame；

In conjunction with the first implementation of the 9th aspect or the 9th aspect, in second of implementation of the 9th aspect, Preset field in ACK frame includes at least two in following field:

In conjunction with the first implementation of the 9th aspect, in the third implementation of the 9th aspect, ACK frame is to be based on The frame format of control frame is encapsulated, carrying the preset field of the first information in ACK frame is frame sub-type field.

Tenth aspect, the embodiment of the present invention provide a kind of multi-user's response message use device, comprising:

Transceiver, for sending request message to access point AP；Receive the carrying first information and the second information that AP is sent Correct response instruct ACK frame, ACK frame be used for reply transceiver transmission request message, the first information be used to indicate AP use Multi-user's response mode sends the response message for being used for response request message to transceiver, and the second information, which is used to indicate AP and sends, rings Answer the temporal information of message；

Processor receives AP for controlling transceiver when reaching the temporal information corresponding time that the second information indicates Send response message；

Transceiver is also used to receive AP when reaching the temporal information corresponding time that the second information indicates and send response Message.

In conjunction with the tenth aspect, in the first implementation, processor is also used to:

Before the temporal information corresponding time of the second information reaches, the site STA where controlling it is in suspend mode shape State.

In conjunction with the first implementation of the tenth aspect or the tenth aspect, in second of implementation of the tenth aspect, The first information and the second information are carried in the preset field of ACK frame.

In conjunction with second of implementation of the tenth aspect, in the third implementation of the tenth aspect, ACK frame is preset Field includes at least two in following field:

In conjunction with the first implementation of the tenth aspect, in the 4th kind of implementation of the tenth aspect, ACK frame is to be based on The frame format of control frame is encapsulated, carrying the preset field of the first information in ACK frame is frame sub-type field.

Tenth on the one hand, and the embodiment of the present invention provides a kind of multi-user's response message use device, comprising:

Transceiver, so that at least two site STAs receive broadcast frame, carries transmitting-receiving in broadcast frame for sending broadcast frame The descending multi-user message transmission time information of machine；At least two site STAs are received respectively goes up asking for transmission in different time points Seek message；

Processor, for determining that instruction information, instruction information are used to indicate transmitting-receiving for STA each at least two STA Request message of the machine in the descending multi-user message transmission time information corresponding time to STA transmission for responding STA transmission Response message；

The transceiver is also used to pass through the request message for replying STA for each STA at least two STA Correct response instructs ACK frame to send instruction information to STA；For each STA at least two STA, in descending multi-user message When the transmission time information corresponding time reaches, response message is sent to STA.

On the one hand in conjunction with the tenth, in the first implementation, ACK of the transceiver in the request message for replying STA When frame sends instruction information to STA, it is specifically used for:

The instruction information that processor determines is carried in the preset field of ACK frame；

The ACK frame for carrying instruction information is sent to STA.

In conjunction with the first implementation of the tenth one side, in second of implementation of the tenth one side,

Preset field in ACK frame includes any one in following fields:

12nd aspect, the embodiment of the present invention provide a kind of multi-user's response message use device, comprising:

Transceiver carries the descending multi-user message hair of AP for receiving the broadcast frame of access point AP transmission in broadcast frame Send temporal information；Request message is sent to AP；The correct response for receiving the carrying instruction information that AP is sent instructs ACK frame, ACK frame For replying the request message of STA, instruction information is used to indicate AP when descending multi-user message transmission time information is corresponding Between using multi-user's response mode to STA send be used for response request message response message；

Processor connects for controlling transceiver when reaching the descending multi-user message transmission time information corresponding time Receive the response message that AP is sent；

Transceiver is also used to receive AP when reaching the descending multi-user message transmission time information corresponding time and send Response message.

In conjunction with the 12nd aspect, in the first implementation, processor is also used to:

STA where controlling it is in suspend mode before the descending multi-user message transmission time information corresponding time reaches State.

In conjunction with the first implementation of the 12nd aspect or the 12nd aspect, in second of realization side of the 12nd aspect In formula, instruction information is carried in the preset field of ACK frame, the preset field in ACK frame includes any one in following fields Kind:

In various embodiments of the present invention, AP receive STA transmission request message after, in ACK frame carry the first information with The mode that will use multi-user message is responded to STA instruction AP and (is replied and is responded to STA using multi-user's response mode Message), its essence is for that will postpone a period of time to STA reply response message to STA instruction AP.If more what is expected Before user message sending time point reaches, AP receives the request message of multiple STA, then multi-user message can be used in AP Mode sends response message to multiple STA for having sent request message；And if when scheduled multi-user's response message is sent Between put reach when, AP receives only the request message of a STA, then AP can be used common single user message to the STA send out Response message is sent, alternatively, the AP can also send multi-user message to the STA, it include described in the multi-user message Response message.Therefore multi-user's response message application method its be in the nature delay response message application method, and all may be used To be summarised as the method for sending response message.The essence of the first information is for that will use delay responder to STA instruction AP Formula sends the response message for responding the request message of STA to STA.Described in the AP delay is sent indicated by second information The essence of the temporal information of response message is, for sending the time letter that the response message is postponed to STA instruction AP Breath, this temporal information can be the transmission time points of estimated descending multi-user message, or access point is according to ACK frame Sending time point and it is expected that the time difference of transmission time points of descending multi-user message determine, or it is described to connect Access point according to receive the request message time point and it is expected that the multi-user message transmission time points time difference Value determines.The transmission time points of AP estimated descending multi-user message are not meant to estimated descending multi-user message Transmission time points have to transmission multi-user message when reaching.Multi-user message is meant that AP uses OFDMA (Orthogonal Frequency Division Multiple Access, orthogonal frequency division multiple access) or MU-MIMO (Multi- User Multiple-Input Multiple-Output, multi-user's multiple-input, multiple-output) etc. multi-user transmissions mechanism to multiple STA Simultaneous transmission should be transferred to the message of each STA, the meaning of so much user response message can refer to AP using OFDMA or Response message of the multi-user transmissions such as MU-MIMO mechanism to each STA of the multiple STA simultaneous transmissions request message sent.It is multi-purpose Family response message not necessarily only includes the response message for the request message that STA is sent, and also may include other message, such as only have When one STA has sent request message, then AP can use single user when estimated multi-user message transmission time points reach The mode of message sends response message to the STA, alternatively, the mode of multi-user message also can be used, in this case more It may include response message and AP to the STA in user message actively to other STA other message sent etc., in this way Multi-user message be referred to as multi-user's response message.Single user message refers to the message under single user transmission mechanism, tool The message that body can transmit in the single user frame format as defined in IEEE 802.11.

In some embodiments of the present invention, the request for request data package that is sequentially sent at least two STA Message, AP is after receiving the request message that any one STA at least two STA is sent, and AP is by carrying the first information Response message will be replied to the STA by multi-user's response mode to STA instruction AP with the ACK frame of second information, with And AP sends the temporal information of multi-user's response message.On the one hand, the ACK frame that STA is sent from AP knows that AP sends multi-user and rings After the temporal information for answering message, STA can choose the corresponding time arrival of temporal information for sending multi-user's response message in AP Before in a dormant state, revival etc. is waiting and when temporal information corresponding time that AP sends multi-user's response message arrives Multi-user's response message that AP is sent is received, and then achievees the purpose that save STA electric energy；Alternatively, STA can choose AP send it is more The temporal information of the user response message corresponding time is communicated before arriving with other equipment, and then improves the work of STA Efficiency.On the other hand, AP to multiple STA for having sent request message while being sent response and disappeared using the mode of multi-user message Breath, reduces AP to channel contention number, to improve channel transport efficiency.

In some embodiments of the invention, for when estimated multi-user message sending time point reaches, AP is only received The case where request message that one STA is sent.After receiving the request message that the STA is sent, Xiang Suoshu STA is sent to be used AP ACK frame is instructed in the correct response for the request message for replying the STA, the ACK frame carries the first information and the second information, The first information is used to indicate that the AP postpones to send the request message for responding the STA to the STA to the STA Response message, second information is the temporal information that AP delay sends the response message, for indicating to the STA Before the transmission time points that the AP sends the response message arrive, time span that the STA is needed to wait for.On the one hand, After the temporal information that the ACK frame that AP is sent obtains that AP delay sends response message, STA can choose to be sent the STA in AP Before the response message of delay in a dormant state, and when AP sends response message ensure in wake states to receive AP hair The response message sent achievees the purpose that save STA electric energy；Alternatively, STA can choose AP send response message before with other Equipment is communicated, and ensures to receive the response message of AP transmission in state to be received when AP sends response message, from And improve the working efficiency of STA.On the other hand, AP is only received when the transmission time points for sending the response message reach The request message that the STA is sent, the then mode that single user message can be used in the AP send the response to the STA and disappear Breath, or, the AP sends multi-user message to the STA, it include the response message, such case in the multi-user message Under in the multi-user message that sends of the AP other than including the response message, can also include that the AP is sent out to other STA The message sent reduces AP to the contention number of channel, to improve channel transport efficiency in this way.

In other embodiments of the invention, access point AP sends broadcast frame, so that site STA receives the broadcast frame, institute State the descending multi-user message transmission time information that the AP is carried in broadcast frame.The AP receives site STA and is receiving After the request message sent after the broadcast frame, pass through the correct response of the request message for indicating to be properly received the STA ACK frame is instructed to send instruction information to the STA, the instruction information is used to indicate that the AP is in the downlink to the STA The multi-user message transmission time information corresponding time sends the request message for responding the STA transmission to the STA Response message.When reaching the descending multi-user message transmission time information corresponding time, Xiang Suoshu STA is sent the AP The response message.On the one hand, the STA for receiving the instruction information can before the sending time point of the response message reaches Suspend mode is carried out with selection to be communicated to improve the working efficiency of STA with power saving or with other equipment.On the other hand, similarly, If the request that the AP receives at least two STA transmission disappears when the sending time point of the descending multi-user message reaches Breath, then the AP can be used multi-user message at least two STA while send response message, can reduce AP in this way To the contention number of channel, to improve channel transport efficiency；If the sending time point in the descending multi-user message reaches When, the AP only receives the request message of STA transmission, then the mode of single user message can be used to described in the AP STA sends response message, alternatively, the AP sends multi-user message to the STA, it include the sound in the multi-user message Message is answered, further includes the AP in the multi-user message that the AP is sent in this case other than including the response message The message sent to other STA, reduces AP to the contention number of channel, to improve channel transport efficiency in this way.

Detailed description of the invention

Fig. 1 is that the prior art is illustrated in the message request and response process of the next basic service set of single user communication mechanism Figure；

Fig. 2 is that the prior art is illustrated in the message request and response process of the next basic service set of multi-user communication mechanism Figure；

Fig. 3 is a kind of multi-user's response message application method flow diagram provided in an embodiment of the present invention；

Fig. 4 is the format structure schematic diagram of ACK frame in the prior art；

Fig. 5 is that interacting for request message and response message is sent between a kind of AP and STA provided in an embodiment of the present invention Journey schematic diagram；

Fig. 6 is that interacting for request message and response message is sent between a kind of AP and STA provided in an embodiment of the present invention Journey schematic diagram；

Fig. 7 is the format structure schematic diagram of extension ACK frame provided in an embodiment of the present invention；

Fig. 8 is that interacting for request message and response message is sent between a kind of AP and STA provided in an embodiment of the present invention Journey schematic diagram；

Fig. 9 is the ACK frame structure schematic diagram of the frame format provided in an embodiment of the present invention based on encapsulation control frame；

Figure 10 is that interacting for request message and response message is sent between a kind of AP and STA provided in an embodiment of the present invention Journey schematic diagram；

Figure 11 is a kind of multi-user's response message application method flow diagram provided in an embodiment of the present invention；

Figure 12 is that interacting for request message and response message is sent between a kind of AP and STA provided in an embodiment of the present invention Journey schematic diagram；

Figure 13 is a kind of multi-user's response message application method flow diagram provided in an embodiment of the present invention；

Figure 14 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention；

Figure 15 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention；

Figure 16 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention；

Figure 17 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention；

Figure 18 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention；

Figure 19 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention；

Figure 20 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention；

Figure 21 is a kind of multi-user's response message use device structural schematic diagram provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention is described, and shows So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to In the scope of protection of the invention.

Technical solution provided in an embodiment of the present invention is suitable for the WiFi communication system of multi-user, access point AP and website Message request is carried out between STA and response uses backoff procedure, for the request message that at least two STA are sequentially sent, AP It is replied simultaneously using multi-user's response message.

Wherein, backoff procedure refers to, before message sending end sends message, is randomly generated in a numberical range first The initial value of one count value, and the channel for sending message is monitored with regular hour unit.If channel is in Idle state Then count value is subtracted one；Otherwise, channel is not at Idle state and then keeps count value constant, when channel is in Idle state followed by It is continuous that count value is subtracted one.When count value reduces to 0, then message sending end can send message.But backoff procedure cannot be kept away completely Exempt from the generation of information transmission conflict, to further avoid information transmission conflict problem, message sink end can disappear receiving one Acknowledgement frame (ACK) is sent to message sending end within the scope of predetermined time after breath, this is properly received with instruction message receiving end and is disappeared Breath, otherwise, message sending end decision message clashes.

The frame of media access control (English Medium Access Control, referred to as: MAC) layer in WiFi communication system (frame) it is divided into three kinds, is control frame, management frame, data frame respectively.

Wherein, control frame is used for most basic control, for example, correct response instruction ACK frame is exactly a control frame, it is used A management frame or data frame is correctly received in expression.

Management frame is for exchanging management information between STA and AP or STA and STA, for example, STA issues a request to AP Message (i.e. a management frame), request message can be association request (Association Request), certification request (Authentication Request), addition transport stream request (ADDTS Request) or creation direct connected link request (DLS Request), various measurement requests etc., then AP can send an ACK frame to STA first after having correctly received this request message, The request message of STA is parsed and handles again later, to send response message (another management frame) to STA.STA is properly received After response message also ACK frame should be sent to AP.

Management frame is for realizing the function of WiFi communication system management aspect, and data frame is then for realizing WiFi communication system Communication function, data frame carry upper-layer protocol message, such as Internet Protocol (English: Internet Protocol, referred to as: IP) message.Data frame receipt end needs to reply ACK frame to data frame transmitting terminal after being properly received data frame.A kind of special circumstances Be, STA to AP send a uplink data frames, triggering AP to STA send caching downlink data frame, at this time AP can directly to STA sends downlink data frame, has been received by the upstream data sent before the STA using a bit indication in downlink data frame Frame.Certain AP first can also send ACK frame to STA for the uplink data frames that STA is sent, and send caching to STA again later Downlink data frame.Here the STA uplink data frames sent can also can be considered as a request message, i.e., under request AP is sent The AP downlink data frame sent is considered as the response message to the STA uplink data frames sent by row data frame.

In technical solution provided in an embodiment of the present invention, for the request message that at least two STA are sequentially sent, AP After receiving request message, indicate whether AP uses multi-user's response message to send out STA in the corresponding ACK frame of request message The request message sent is replied.If AP does not use multi-user's response message, STA can keep reviving according to current mechanism The single user response message that state waits AP to send is until time-out；If AP uses multi-user's response message, STA can be from AP At the time of knowing that AP sends multi-user's response message in the correct response instruction ACK or broadcast frame sent, so that STA can choose Before arriving at the time of AP sends multi-user's response message in a dormant state, and when AP sends multi-user's response message It is carved into multi-user's response message that the AP to be received such as revival is sent when coming, and then achievees the purpose that save STA electric energy.Certainly, STA Also it can choose and keep revival before arriving at the time of AP sends multi-user's response message, to be led to other websites Letter, to improve the working efficiency of STA.

Embodiment one

As shown in figure 3, the embodiment of the present invention provides a kind of multi-user's response message application method, this method executing subject is AP, this method comprises:

S301, access point AP receive at least two site STAs upper request message sent in different time points respectively；

S302, following steps are executed for STA each at least two STA:

AP determines that the first information and the second information, the first information are used to indicate AP and are sent out using multi-user's response mode to STA The response message of the request message for responding STA is sent, the second information is used to indicate the temporal information that AP sends response message；AP ACK frame is instructed to send the first information and the second information to STA by the correct response of the request message for replying STA；AP exists When the temporal information corresponding time reaches, response message is sent to STA.

In the present embodiment, whether AP is replied the STA request message sent using multi-user's response message, depending on practical Situation determines.For example, can choose when the request message that AP receives STA transmission is more using multi-user's response message pair The request message that STA is sent is replied.The request message that STA is sent is carried out one by one using single user response message for AP The scene of reply is not specifically limited in the present embodiment.

In the present embodiment, it is " vertical after the request message of STA that the ACK frame of the request message for replying STA is that AP is received STA i.e. " is replied to, but AP receives the request message of STA and sends when needing certain between ACK frame in the actual process Between between be divided into current mechanism, details are not described herein again.

For AP by the correct response of the request message for replying STA instruct ACK frame to STA send the first information and Second information can have following three kinds of implementations:

The ACK frame for carrying the first information and the second information is sent to STA by the first implementation, AP, in the ACK frame Preset field including carrying the first information and the second information, the preset field can be four free time in existing ACK frame At least two in field, specifically include: more segmentation indicating fields retry indication field, frame protection indication field and sequence Indication field.Four spare fields in existing ACK frame are illustrated below:

As shown in figure 4, the frame type in frame control field indicates that this is one in the format structure of existing ACK frame Control frame, frame subtype indicate that this is an ACK frame, and there are four bits in the format of existing ACK frame in ACK frame without real Border meaning, default to be set as 0, which is referred to as spare field, specifically includes: more segmentation indicating fields retry instruction Field, frame protection indication field and sequence indication field.Since any one field in this four spare fields includes one A bit, accordingly it is also possible to which aforementioned four spare field is known as more segmentation indication bits, retries indication bit, frame protection Indication bit and sequence indication bit.

More segmentation indicating fields: multiple mac frames can be used to carry in a long message, and a mac frame carries One segmentation of message.More segmentation indicating fields are used to indicate subsequent whether have the content for being more segmented and carrying with this frame to belong to The same message.Since control frame is all shorter and smaller, it is impossible to which there are other segmentations, therefore more segmentation indicating fields are in ACK Without practical significance in frame.

It retries indication field: if a management frame or data frame are sent and failed, can be retransmitted, retry indication field use In instruction, whether this frame is the frame retransmitted.Since control frame is never retransmitted, indication field is retried in ACK frame without reality Border meaning.

Frame protects indication field: whether the data portion for being used to indicate the carrying of this frame is encrypted protection.Not due to control frame Need to be encrypted protection, in addition ACK frame does not have data portion, therefore frame protects indication field in ACK frame without practical significance.

Sequence indication field: the content of data frame carrying is used to indicate with the presence or absence of sequencing relationship.Due to control frame Be not related to sequencing problem, thus sequence indication field in ACK frame without practical significance.

For the first implementation, to carry the first information and using the aforementioned four spare field in ACK frame For two information, it is illustrated by following two example:

Example one

For four spare fields in ACK frame, the first information is carried using wherein any one spare field, using surplus Excess-three spare field carries the second information.Will wherein any one spare field as multi-user respond instruction (English: Multiple Response Indication, referred to as: MRI) field, indicate that AP does not use multi-user when MRI is the first value (0) Response message, indicates that AP uses multi-user's response message when MRI is second value (1), indicate AP using remaining three spare fields The temporal information of multi-user's response message is sent, STA needs to wait before arriving at the time of AP sends multi-user's response message, STA may be at dormant state in the time that this section waits, thus remaining three spare fields can indicate STA can suspend mode Time (is referred to herein with DT, DT full name is Deferred Time).

STA described herein can dormancy time can be free with the communication between pointer pair and the AP, the STA The time of domination, can be during dormancy time in this section, STA can carry out suspend mode, alternatively, can also set with other in addition to the AP It is standby to be communicated.

Using by more segmentation indicating fields as MRI field, will if AP determines to use multi-user's response message The corresponding MRI of more segmentation indicating fields is set as second value (1) in ACK frame.AP, which is utilized, retries indication field, frame protection instruction Three spare fields of Fields and order indication field come indicate STA can dormancy time (DT), by these three spare fields in example 1 The field of synthesis is known as DT field.Since DT field is altogether there are three bit, value is 0~7, then the STA's that DT field indicates can The value range of dormancy time is 0~7 chronomere, which can be configured according to the actual situation.

STA can the maximum value of dormancy time can be configured according to the time-out time (timeout) of system.System Time-out time refer to, STA send request message after, if not receiving any response message, STA in a certain time interval Not think to will receive any response message, this time interval is known as time-out time.Assuming that the time-out time of default is T, The STA of DT field instruction can dormancy time minimum 0, it is maximum no more than T, since only there are three bit, values for DT field Range is 0~7, indicate STA can the value range of dormancy time be 0~7 chronomere, therefore the chronomere can set It is set to 1/7th more smaller than T, naturally it is also possible to be set as 1/7th of T.It is true that the purpose of chronomere is arranged in this way Protect before STA arrives at the time of AP is ready for sending multi-user's response message and stop dormant state, with etc. AP to be received transmission Multi-user's response message, can also be arranged the STA of DT field instruction in the present embodiment according to the actual situation can dormancy time Value range and chronomere.

In conjunction with example one, Fig. 5 show the interactive process that request message and response message are sent between AP and STA, and AP is received After the request message 1 sent to STA1, decision is deferred to the X moment to the multi-purpose response message of STA1 transmission, since request message 1 is Therefore received first request message of AP sets maximum value 7 for DT field, and set 1 for the MRI of ACK frame.When Right AP is not necessarily intended to the maximum for being positioned to allow for the STA dormancy time that DT field indicates when receiving first request message Value, can be configured as the case may be.After STA1 receives the ACK of AP transmission, stop stopping after 7 chronomeres of suspend mode Sleep, with etc. multi-user's response message for sending of AP to be received.When AP receives the request message 2 of STA2 transmission, distance AP at this time Less than 5 chronomeres of X moment of multi-user's response message are sent, then AP sets 1 for the MRI of ACK frame, and DT field is set It is set to 4.After STA2 receives the ACK of AP transmission, stop suspend mode after 4 chronomeres of suspend mode, with etc. AP to be received send it is more User response message.When AP receives the request message 3 of STA3 transmission, when distance AP sends the X of multi-user's response message at this time Less than 1 chronomere is carved, then AP sets 1 for the MRI of ACK frame, but DT field is set as 0.STA1 receives AP transmission After ACK, keep wake states with etc. multi-user's response message for sending of AP to be received.

AP sends multi-user's response message using competition mechanism when the X moment arrives, and since there are backoff procedures, AP is not One surely robs immediately at the X moment and accounts for channel and send multi-user's response message, therefore AP is actually sent out multi-user's response message Time point may be later than the X moment.Each STA multi-user's response message that AP to be received is sent such as stops after dormant state and to this Multi-user's response message replys ACK.

Example two

As a whole by four idle bits in ACK frame, the carrying first information and the second information jointly, in order to DT field in example one is distinguished, and is known as the field of four idle bits synthesis to extend DT (EDT, Extended DT) herein Field.It is found that value range is 0~15 since there are four bits by EDT.When the value of EDT field is 0, at this time Four idle bits are set as 0 in ACK frame, indicate that AP does not use multi-user's response message at this time；When the value of EDT field is 1 When~15, indicate that AP uses multi-user's response message, stopping for STA before arriving at the time of AP sends multi-user's response message Sleep the time, STA can dormancy time can subtract 1 for the value of EDT field.It is considered as 0 when can also be 15 by the value of EDT field A chronomere, then 1 to 14 value mean that STA is actual can dormancy time.

Since the value range of DT field in the value range ratio one of EDT field is big, multi-user is sent in AP and is rung At the time of answering message it is constant in the case where, the time granularity ratio DT field that EDT field indicates is thinner, Phase Proportion one, example At the time of the time point waken up after STA suspend mode in two can send multi-user's response message closer to AP, thus STA power saving effect meeting It is much better.Optionally, the chronomere of EDT field can take ten a quarters of the time-out time T of system.

In conjunction with example two, Fig. 6 show the interactive process that request message and response message are sent between AP and STA, and AP is received After the request message 1 sent to STA1, decision is deferred to the X moment to the multi-purpose response message of STA1 transmission, since request message 1 is Received first request message of AP, therefore, setting maximum value 15 for DT field (indicates that AP is not sent when DT field is 0 Multi-user's response message), indicate that AP sends multi-user's response message after 14 chronomeres at this time.Certain AP is not necessarily intended to The maximum value for being positioned to allow for the STA dormancy time that DT field indicates when receiving first request message, can be according to specific Situation is configured.STA1 receive AP transmission ACK after, stop suspend mode after 14 chronomeres of suspend mode, with etc. AP to be received Multi-user's response message of transmission.When AP receives the request message 2 of STA2 transmission, distance AP sends multi-user's response and disappears at this time Less than 10 chronomeres of the X moment of breath, thus STA can dormancy time be 9 chronomeres, then AP sets EDT field It is set to 10.After STA2 receives the ACK of AP transmission, stop suspend mode after 9 chronomeres of suspend mode, with etc. AP to be received send it is more User response message.When AP receives the request message 3 of STA3 transmission, when distance AP sends the X of multi-user's response message at this time Carve less than 1 chronomere, thus STA can dormancy time be 0 chronomere, then the EDT field of ACK frame is arranged AP It is 1.After STA1 receives the ACK of AP transmission, keep wake states with etc. multi-user's response message for sending of AP to be received.

The extension ACK frame for carrying the first information and the second information is sent to STA by second of implementation, AP, the expansion Exhibition ACK frame includes existing ACK frame and extended field, and extended field is for carrying the second information.Wherein, it extends and is held in ACK frame The field for carrying the first information is any one following field:

The field for extending the carrying first information for including in ACK frame is four free time in existing ACK frame shown in Fig. 4 Any one field in field, the field for carrying the first information are known as MRI bit.

Extension ACK frame can be understood as increasing on the basis of existing ACK frame newer field (in Fig. 7 " when delay Between " field), which carries the second information.

For the extension ACK frame in second of implementation, as shown in fig. 7, when AP determines to send multi-user's response message, Set 1 for MRI bit in frame control field, by " delay time " field added in ACK frame carrying STA can suspend mode when Between, i.e. time interval at the time of AP sends multi-user's response message before arrival.Since " delay time " field is not by existing The limitation of bit number in format, therefore very delicate chronomere, such as microsecond can be taken.

Extension ACK frame as shown in connection with fig. 7, as shown in figure 8, sending request message and response message between AP and STA In interactive process, after AP receives the request message 1 of STA1 transmission, determine that be deferred to the X moment disappears to the multi-purpose response of STA1 transmission Breath (assuming that being deferred to the X moment sends 2340 microsecond of maximum delay time that multi-purpose response message is permission), AP is by ACK frame MRI is set as 1, while increasing " delay time " field (can also just be DT field) in ACK frame, and " delay time " word The value of section is set as 2340 (unit is microsecond), means that AP sends multi-user's response message after 2340 microseconds.STA1 is received After ACK, can choose and stop suspend mode after 2340 microsecond of suspend mode, with etc. multi-user's response message for sending of AP to be received.AP It after the request message 2 for receiving STA2 transmission, determines to send multi-user's response message to STA2, distance AP sends multi-purpose ring at this time Answering the X moment of message, there are also 1580 microseconds, and then the MRI of ACK frame is set as 1 by AP, and the value of " delay time " field is set as 1580.After STA2 receives ACK, can choose and stop suspend mode after 1580 microsecond of suspend mode, with etc. AP to be received send it is multi-purpose Family response message.After AP receives the request message 3 of STA3 transmission, AP also determines to send multi-user's response message to STA3, this When there are also 55 microseconds distance AP X moment for sending multi-purpose response message, therefore the MRI in ACK frame is set as 1 by AP, and will " delay The value of time " field is set as 55.After STA3 receives ACK, can choose and stop suspend mode after 55 microsecond of suspend mode, with etc. it is to be received Multi-user's response message that AP is sent.

The ACK frame for carrying the first information and the second information is sent to STA by the third implementation, AP, in the ACK frame Preset field including carrying the first information and the second information.The ACK frame is the frame format based on encapsulation control frame, in ACK frame The preset field for carrying the first information is frame sub-type field, which includes the field for carrying the second information.

Encapsulation control frame format defined in existing specification refers to, defined control frame is encapsulated in new control frame class In type, while increasing new field, in order to which the format of original control frame is all constant, and uses encapsulation control frame in reality New field is also added while existing original each control frame function.Encapsulating control frame is a kind of control frame, but the inside can be sealed Fill defined various control frames.

For the third implementation, the present embodiment is sealed ACK frame using another encapsulation control frame of this technical definition In encapsulation control frame, while increasing " delay time " field, and assigns new frame type to new encapsulation control frame.The envelope The frame subtype for filling control frame carries the first information, increases the field that " delay time " field carries the second information.

Each field in encapsulation control frame format shown in Fig. 9 is illustrated below:

Frame control field: the frame type in frame control field indicates that this is a control frame, and frame subtype indicates that this is one A encapsulation control frame, this encapsulation control frame are different from encapsulating control frame defined in existing specification.

Duration field: this frame duration in transmission is indicated.

1 field of address: this is first address field in packed control frame, such as the reception address in ACK frame. An address field is at least had in one frame, and specific address segment number is then related with frame subtype with frame type.

Carrying frame control field: this is the frame control field of packed control frame, in most contents and new frame Frame control field be consistent, only frame subtype is different.Frame subtype in load carrying frame control can indicate it is various Control frame, such as ACK frame, and the frame subtype in frame control is then fixed as indicating that this is encapsulation control frame.For frame subtype Indicate this be encapsulate control frame and carrying be ACK frame when, just specify in the frame comprising " delay time " field.In the present invention In embodiment, the frame subtype in frame control just specifies the encapsulation control frame that this frame contains " delay time " field, therefore No longer need to use frame control in spare field indicated as MRI.

Delay time field: this is the field of addition of the embodiment of the present invention, carries the second information.

Load carrying frame field: the control frame of encapsulation control frame carrying (has been placed on carrying in addition to duration, address 1, frame control Frame control field), the rest part other than frame check.When specific to one ACK frame of carrying, load carrying frame part is blank in fact, I.e. without this partial content, because ACK frame is inherently very short, when controlling (being placed on load carrying frame control section) in addition to frame, continue Between (retain in situ, but content update), receive except address (address 1), frame check, just without other contents.

Frame check field: the check part of control frame is encapsulated.

It can see from the above-mentioned format description to encapsulation control frame shown in Fig. 9, the frame format based on encapsulation control frame ACK frame increase a frame control and delay time field than the length of packed ACK frame.It is also understood that being based on The ACK frame for encapsulating the frame format of control frame is that insertion carries frame control field after 1 field of address on the basis of former control frame With the field such as delay time field newly increased, and the content of the frame control section of former control frame is copied into load carrying frame control Field, then the value of the frame subtype in the control of former frame in field is revised as encapsulation control frame type, and duration and frame school The content tested then needs to be recalculated according to new frame.

By above-mentioned three kinds of implementations, the ACK frame for carrying the first information and the second information of the received AP transmission of STA Afterwards, according to the first information with the second information, know AP send multi-user's response message at the time of, so that STA can choose in AP Send multi-user's response message at the time of arrive before in a dormant state, and AP send multi-user's response message at the time of to Multi-user's response message that the AP to be received such as revival is sent when coming, and then achieve the purpose that save STA electric energy；Alternatively, STA can be with Selection communicates before arriving at the time of AP sends multi-user's response message with other equipment, and then improves the work of STA Efficiency.

As shown in Figure 10, the embodiment of the present invention provides a kind of multi-user's response message application method, this method executing subject It is STA, this method comprises:

S1001, site STA send request message to access point AP；

S1002, STA receive the correct response instruction ACK that the expression that AP is sent is properly received the request message of the STA Frame, ACK frame carry the first information and the second information.The first information is used to use multi-user's response mode to STA instruction AP The response message for responding the request message of STA is sent to STA, the second information indicates the time letter that AP sends response message Breath；

S1003, STA receive AP and send response message when reaching the temporal information corresponding time.

In the present embodiment, STA can be before the temporal information corresponding time that AP sends multi-user's response message be reached It is communicated with other websites, to improve the working efficiency of STA；Alternatively, STA selection is when AP sends multi-user's response message Between information corresponding time reach before in a dormant state, to achieve the purpose that save electric energy.

In the present embodiment, STA, which receives the carrying first information that AP is sent and the ACK frame of the second information, can following three kinds Implementation:

The first implementation, STA receive the ACK frame for carrying the first information and the second information that AP is sent, the ACK frame In include carrying the first information and the second information preset field, the preset field be existing ACK frame in four free words At least two in section, specifically include: more segmentation indicating fields retry indication field, frame protection indication field and sequentially refer to Show field.

Second of implementation, STA receive the extension ACK frame for carrying the first information and the second information that AP is sent, should Extension ACK frame includes existing ACK frame and extended field, and extended field is for carrying the second information.Wherein, it extends in ACK frame The field for carrying the first information is any one following field:

The third implementation, STA receive the ACK frame for carrying the first information and the second information that AP is sent, the ACK frame It is the frame format based on encapsulation control frame, carrying the preset field of the first information in ACK frame is frame sub-type field, the ACK frame Field including carrying the second information.

For it is above-mentioned the first to the third implementation, had a detailed description in the corresponding method of Fig. 3, herein no longer It repeats.

By embodiment one, for the request message of at least two STA request data package sequentially sent, AP is being received To after request message, indicate that AP is sent out using multi-user's response mode to STA by the ACK frame of the request message for replying STA Send the response message of the request message for responding STA and the temporal information of AP transmission multi-user's response message.STA is from AP After the ACK of transmission knows the temporal information that AP sends multi-user's response message, STA, which can choose to send multi-user in AP and respond, to disappear The temporal information of the breath corresponding time arrives before in a dormant state, and sends the temporal information of multi-user's response message in AP Multi-user's response message that the AP to be received such as revival is sent when the corresponding time arrives, and then achieve the purpose that save STA electric energy； Alternatively, STA can choose before temporal information corresponding time that AP sends multi-user's response message arrives with other equipment It is communicated, and then improves the working efficiency of STA.

Embodiment two

As shown in figure 11, the embodiment of the present invention provides a kind of multi-user's response message application method, this method executing subject It is AP, this method comprises:

S1101, access point AP send broadcast frame, so that at least two site STAs receive broadcast frame, carry AP in broadcast frame Descending multi-user message transmission time information；

S1102, AP receive at least two site STAs upper request message sent in different time points respectively；

S1103, following steps are executed for STA each at least two STA:

AP instructs ACK frame to send instruction information, instruction to STA by the correct response of the request message for replying STA Information is used to send to STA for ringing in the descending multi-user message transmission time information corresponding time to STA instruction AP The response message for the request message for answering STA to send；AP when reaching descending multi-user message transmission time information corresponding time, Response message is sent to STA.

In the present embodiment, AP will indicate that information is carried in the preset field of ACK frame, then will carry instruction information ACK frame is sent to STA, the instruction information be used to indicate AP the descending multi-user message transmission time information corresponding time to STA sends the response message of the request message for responding STA transmission.

Optionally, the preset field in ACK frame includes any one in following fields:

Preset field i.e. in ACK frame is any one word in four spare fields in existing ACK frame shown in Fig. 4 The preset field of section, carrying instruction information is known as MRI field.

Instruction information is carried using a preset field in ACK frame in the present embodiment, i.e. instruction AP uses multi-user The mode of response message replys response message to STA, and AP sends the time of multi-user's response message, the i.e. descending multi-user of AP Message sending time carries in the broadcast frame that AP is sent.Such as beacon (Beacon) frame or the other broadcast of AP periodic broadcast Carrying instruction information, STA can also know instruction information from the descending multi-user message of AP with cascading in frame.

As shown in figure 12, AP is carried in the beacon frame (or other specific broadcast frames after beacon frame) of periodic broadcast The temporal information that descending multi-user message in this beacon period (interval between two neighbor beacon frames) is sent, including Figure 12 In first descending multi-user message send temporal information and second descending multi-user message send temporal information, AP Multi-user's response message can be sent on descending multi-user message transmission time information.

By taking STA1 as an example, after STA1 sends request message 1 to AP using competition mechanism, AP decision is responded using multi-user MRI field in ACK frame is then set as 1 by message.After STA1 receives this ACK frame, according to what is carried in the beacon frame of AP broadcast Descending multi-user message transmission time information knows that AP may be sent out in first descending multi-user message sending time to oneself Multi-user's response message is sent, therefore STA1 can select suspend mode before first descending multi-user message sending time arrives, STA1 stops suspend mode when first descending multi-user message sending time arrives, with etc. multi-user's response for sending of AP to be received Message, to achieve the purpose that save electric energy；Alternatively, STA1 can be before first descending multi-user message sending time arrives It is communicated with other equipment, to improve working efficiency.

AP would generally be defaulted and send multi-user's response message when first descending multi-user message sending time arrives, if STA1 is not received by multi-user's response message in the preset duration after first descending multi-user message sending time, can To select suspend mode, then stop suspend mode when second descending multi-user message sending time arrives, with etc. AP to be received send Multi-user's response message.Alternatively, STA1 does not have in the preset duration after first descending multi-user message transmission time point Multi-user's response message is received, STA1 disappears by monitoring the broadcast that first descending multi-user message sending time AP is sent Breath, knows adjacent next descending multi-user message sending time, and then in next descending multi-user message sending time Arrive before select suspend mode, and next descending multi-user message transmission time arrive when stop suspend mode, with etc. AP to be received Multi-user's response message of transmission.The suspend mode principle of STA2 is identical as STA1, and details are not described herein again.In general, STA selection is received Broadcast frame is that AP is sent before sending request message to AP, but not limited to this.

AP sends multi-user's response message using competition mechanism when descending multi-user message sending time arrives, due to depositing In backoff procedure, AP may not be able to be robbed immediately in descending multi-user message sending time point and be accounted for channel transmission multi-user's response Message, therefore when AP is actually sent out time of descending multi-user message and may be later than in broadcast frame descending multi-user message and transmit Between.STA is needed to wait for a period of time in descending multi-user message transmission time point at this time.

As shown in figure 13, the embodiment of the present invention provides a kind of multi-user's response message application method, this method executing subject It is STA, this method comprises:

S1301, site STA receive the broadcast frame that access point AP is sent, and the descending multi-user message of AP is carried in broadcast frame Transmission time information；

S1302, STA send request message to AP；

The correct response that S1303, STA receive the carrying instruction information that AP is sent instructs ACK frame, and ACK frame is for replying STA Request message, instruction information is used to indicate AP in the descending multi-user message transmission time information corresponding time using multi-user Response mode sends the response message for being used for response request message to STA；

S1304, STA receive the sound that AP is sent when reaching the descending multi-user message transmission time information corresponding time Answer message.

In the present embodiment, STA can be before the descending multi-user message transmission time information corresponding time of AP be reached It is communicated with other websites, to improve the working efficiency of STA；Alternatively, STA selection is when the descending multi-user message of AP is sent Between information corresponding time reach before in a dormant state, to achieve the purpose that save electric energy.

In the present embodiment, carrying instruction information in the preset field of ACK frame, it is more in downlink which is used to indicate AP The user message transmission time information corresponding time sends the response message for responding the request message that STA is sent to STA.It can Choosing, which includes any one in following fields:

For the method in Figure 13, had a detailed description in the corresponding method of Figure 11, details are not described herein again.

By embodiment two, AP is by sending broadcast frame, so that STA knows the descending multi-user message sending time letter of AP Breath.For the request message of at least two STA request data package sequentially sent, AP passes through after receiving request message For reply STA request message ACK frame instruction, AP the descending multi-user message transmission time information corresponding time to STA sends the response message of the request message for responding STA transmission.And then STA can choose the descending multi-user in AP and disappear The breath transmission time information corresponding time arrives before in a dormant state, and believes in the descending multi-user message sending time of AP Multi-user's response message that the AP to be received such as revival is sent when ceasing the arrival of corresponding time, and then reach the mesh for saving STA electric energy 's；It is set before the descending multi-user message transmission time information corresponding time of AP arrives with other alternatively, STA can choose It is standby to be communicated, and then improve the working efficiency of STA.

It is corresponding with embodiment one, embodiment three

As shown in figure 14, the embodiment of the present invention provides a kind of multi-user's response message use device, comprising:

Transceiver module 141, for receiving at least two site STAs upper request message sent in different time points respectively；

Processing module 142, for for each STA at least two STA, determining the first information and the second information, first Information is used to indicate transceiver module 141 and multi-user's response mode is used to send the response for responding the request message of STA to STA Message, the second information are used to indicate the temporal information that transceiver module 141 sends response message；

Transceiver module 141 is also used to pass through the request message for replying STA for each STA at least two STA Correct response instruct ACK frame to send the first information and the second information to STA；When reaching the temporal information corresponding time, to STA sends response message.

Optionally, transceiver module 141 sends the first information to STA in the ACK frame by the request message for replying STA When with the second information, it is specifically used for:

The determining first information of processing module 142 and the second information are carried in the preset field of ACK frame；

Optionally, the preset field in ACK frame includes at least two in following field:

Optionally, ACK frame is the frame format based on encapsulation control frame, and the preset field that the first information is carried in ACK frame is Frame sub-type field.

As shown in figure 15, the embodiment of the present invention provides a kind of multi-user's response message use device, comprising:

Transceiver module 151, for sending request message to access point AP；Receive the carrying first information and second that AP is sent The correct response of information instructs ACK frame, and ACK frame is used to reply the request message of the transmission of transceiver module 151, and the first information is for referring to Show that AP sends the response message for being used for response request message using multi-user's response mode to transceiver module 151, the second information is used The temporal information of response message is sent in instruction AP；

Processing module 152 is reached for controlling transceiver module 151 in the temporal information corresponding time that the second information indicates When, it receives AP and sends response message；

Transceiver module 151 is also used to receive AP when reaching the temporal information corresponding time that the second information indicates and send Response message.

Optionally, processing module 152 is also used to:

Optionally, the first information and the second information are carried in the preset field of ACK frame.

Optionally, the preset field of ACK frame includes at least two in following field:

By embodiment three, the request message of the request data package sequentially sent at least two STA may be implemented, AP indicates that AP uses multi-user's response mode after receiving request message, through the ACK frame of the request message for replying STA The temporal information of the response message and AP transmission multi-user's response message for responding the request message of STA is sent to STA. After the temporal information that the ACK that AP is sent knows that AP sends multi-user's response message, STA can choose to send in AP and be mostly used STA The temporal information of the family response message corresponding time arrives before in a dormant state, and sends multi-user's response message in AP Multi-user's response message that the AP to be received such as revival is sent when the temporal information corresponding time arrives, and then reach and save STA electricity The purpose of energy；Alternatively, STA can choose before temporal information corresponding time that AP sends multi-user's response message arrives with Other equipment are communicated, and then improve the working efficiency of STA.

It is corresponding with embodiment two, example IV

As shown in figure 16, the embodiment of the present invention provides a kind of multi-user's response message use device, comprising:

Transceiver module 161, so that at least two site STAs receive broadcast frame, is carried for sending broadcast frame in broadcast frame The descending multi-user message transmission time information of transceiver module 161；Receive respectively at least two site STAs in different time points on The request message of transmission；

Processing module 162, for determining that instruction information, instruction information are used to indicate for STA each at least two STA Transceiver module 161 is sent to STA for responding asking for STA transmission in the descending multi-user message transmission time information corresponding time Seek the response message of message；

Transceiver module 161.It is also used to pass through the request message for replying STA for each STA at least two STA Correct response instruct ACK frame to STA send instruction information；For each STA at least two STA, disappear in descending multi-user When the breath transmission time information corresponding time reaches, response message is sent to STA.

Optionally, transceiver module 161 the request message for replying STA ACK frame to STA send instruction information when, It is specifically used for:

The instruction information that processing module 162 determines is carried in the preset field of ACK frame；

The ACK frame for carrying instruction information is sent to STA.

Optionally, the preset field in ACK frame includes any one in following fields:

As shown in figure 17, the embodiment of the present invention provides a kind of multi-user's response message use device, comprising:

Transceiver module 171, for receiving the broadcast frame of access point AP transmission, the descending multi-user that AP is carried in broadcast frame disappears Cease transmission time information；Request message is sent to AP；The correct response for receiving the carrying instruction information that AP is sent instructs ACK frame, ACK frame is used to reply the request message of STA, and it is corresponding in descending multi-user message transmission time information that instruction information is used to indicate AP Time using multi-user's response mode to STA send be used for response request message response message；

Processing module 172, for controlling transceiver module 171 in the descending multi-user message transmission time information corresponding time When arrival, the response message that AP is sent is received；

Transceiver module 171 is also used to receive AP when reaching the descending multi-user message transmission time information corresponding time The response message of transmission.

Optionally, processing module 172 is also used to:

Optionally, instruction information is carried in the preset field of ACK frame, the preset field in ACK frame includes following fields In any one:

By example IV, AP may be implemented by sending broadcast frame, so that STA knows the descending multi-user message hair of AP Send temporal information.For the request message of at least two STA request data package sequentially sent, AP is receiving request message Afterwards, it is indicated by the ACK frame of the request message for replying STA, AP is corresponding in descending multi-user message transmission time information Time sends the response message for responding the request message that STA is sent to STA.And then to can choose the downlink in AP more by STA The user message transmission time information corresponding time arrives before in a dormant state, and sends in the descending multi-user message of AP Multi-user's response message that the AP to be received such as revival is sent when the temporal information corresponding time arrives, and then reach and save STA electricity The purpose of energy；Alternatively, STA can choose the corresponding time of the descending multi-user message transmission time information in AP arrive before with Other equipment are communicated, and then improve the working efficiency of STA.

It is corresponding with embodiment one, embodiment five

As shown in figure 18, the embodiment of the present invention provides a kind of multi-user's response message use device, comprising:

Transceiver 181, for receiving at least two site STAs upper request message sent in different time points respectively；

Processor 182, for determining the first information and the second information, the first letter for each STA at least two STA Breath is used to indicate transceiver 181 and is sent using multi-user's response mode to STA to disappear for responding the response of the request message of STA Breath, the second information are used to indicate the temporal information that transceiver 181 sends response message；

Transceiver 181 is also used to pass through the request message for replying STA for each STA at least two STA Correct response instructs ACK frame to send the first information and the second information to STA；When reaching the temporal information corresponding time, to STA Send response message.

Optionally, transceiver 181 the ACK frame by the request message for replying STA to STA send the first information and When the second information, it is specifically used for:

The determining first information of processor 182 and the second information are carried in the preset field of ACK frame；

As shown in figure 19, the embodiment of the present invention provides a kind of multi-user's response message use device, comprising:

Transceiver 191, for sending request message to access point AP；Receive the carrying first information and the second letter that AP is sent The correct response of breath instructs ACK frame, and ACK frame is used to reply the request message of the transmission of transceiver 191, and the first information is used to indicate AP The response message for being used for response request message is sent to transceiver 191 using multi-user's response mode, the second information is used to indicate The temporal information of AP transmission response message；

Processor 192, for controlling transceiver 191 when reaching the temporal information corresponding time that the second information indicates, It receives AP and sends response message；

Transceiver 191 is also used to receive AP when reaching the temporal information corresponding time that the second information indicates and send and ring Answer message.

Optionally, processor 192 is also used to:

By embodiment five, the request message of the request data package sequentially sent at least two STA may be implemented, AP indicates that AP uses multi-user's response mode after receiving request message, through the ACK frame of the request message for replying STA The temporal information of the response message and AP transmission multi-user's response message for responding the request message of STA is sent to STA. After the temporal information that the ACK that AP is sent knows that AP sends multi-user's response message, STA can choose to send in AP and be mostly used STA The temporal information of the family response message corresponding time arrives before in a dormant state, and sends multi-user's response message in AP Multi-user's response message that the AP to be received such as revival is sent when the temporal information corresponding time arrives, and then reach and save STA electricity The purpose of energy；Alternatively, STA can choose before temporal information corresponding time that AP sends multi-user's response message arrives with Other equipment are communicated, and then improve the working efficiency of STA.

It is corresponding with embodiment two, embodiment six

As shown in figure 20, the embodiment of the present invention provides a kind of AP, comprising:

Transceiver 201, so that at least two site STAs receive broadcast frame, is carried in broadcast frame and is received for sending broadcast frame The descending multi-user message transmission time information of hair machine 201；The upper transmission in different time points of at least two site STAs is received respectively Request message；

Processor 202, for determining that instruction information, instruction information are used to indicate receipts for STA each at least two STA Hair machine 201 is sent in the descending multi-user message transmission time information corresponding time to STA to disappear for responding the request that STA is sent The response message of breath；

Transceiver 201 is also used to pass through the request message for replying STA for each STA at least two STA Correct response instructs ACK frame to send instruction information to STA；For each STA at least two STA, in descending multi-user message When the transmission time information corresponding time reaches, response message is sent to STA.

Optionally, transceiver 201 is when the ACK frame of the request message for replying STA sends instruction information to STA, tool Body is used for:

The instruction information that processor 202 determines is carried in the preset field of ACK frame；

The ACK frame for carrying instruction information is sent to STA.

Optionally, the preset field in ACK frame includes any one in following fields:

As shown in figure 21, the embodiment of the present invention provides a kind of STA, comprising:

Transceiver 211 carries the descending multi-user message of AP for receiving the broadcast frame of access point AP transmission in broadcast frame Transmission time information；Request message is sent to AP；The correct response for receiving the carrying instruction information that AP is sent instructs ACK frame, ACK Frame is used to reply the request message of STA, and it is corresponding in descending multi-user message transmission time information that instruction information is used to indicate AP Time sends the response message for being used for response request message using multi-user's response mode to STA；

Processor 212 is reached for controlling transceiver 211 in the descending multi-user message transmission time information corresponding time When, receive the response message that AP is sent；

Transceiver 211 is also used to receive AP hair when reaching the descending multi-user message transmission time information corresponding time The response message sent.

Optionally, processor 212 is also used to:

By embodiment six, AP may be implemented by sending broadcast frame, so that STA knows the descending multi-user message hair of AP Send temporal information.For the request message of at least two STA request data package sequentially sent, AP is receiving request message Afterwards, it is indicated by the ACK frame of the request message for replying STA, AP is corresponding in descending multi-user message transmission time information Time sends the response message for responding the request message that STA is sent to STA.And then to can choose the downlink in AP more by STA The user message transmission time information corresponding time arrives before in a dormant state, and sends in the descending multi-user message of AP Multi-user's response message that the AP to be received such as revival is sent when the temporal information corresponding time arrives, and then reach and save STA electricity The purpose of energy；Alternatively, STA can choose the corresponding time of the descending multi-user message transmission time information in AP arrive before with Other equipment are communicated, and then improve the working efficiency of STA.

The same or similar part of each method embodiment of the present invention can be mutually with reference to being understood, in each Installation practice Same or similar part can mutually with reference to being understood, each method embodiment and each Installation practice can also mutually with reference into Row understands.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, the computer in one or more which includes computer usable program code can be used in the present invention The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention And its within the scope of equivalent technologies, then the invention is also intended to include including these modification and variations.

Claims

1. a kind of method for sending response message, which is characterized in that this method comprises:

The request message that access point AP receiving station STA is sent；

After receiving the request message that the STA is sent, Xiang Suoshu STA sends described for indicating to have correctly received the AP The correct response of the request message of STA instructs ACK frame, and the ACK frame carries the first information and the second information, first letter It ceases for indicating that the AP postpones to send the response message for responding the request message of the STA to the STA to the STA, Second information indicates the temporal information that the AP sends the response message, for indicating to the STA in the AP Send the response message transmission time points arrive before, time span that the STA is needed to wait for；

The AP sends the first information and second information to the STA by the ACK frame, comprising:

The ACK frame for carrying the first information and second information is sent to the STA by the AP；

When the transmission time points of the response message reach, if the AP receives the request message of at least two STA transmission, Then the AP sends response message at least two STA using the mode of multi-user message simultaneously；If the AP is only received The request message sent to a STA, then the AP sends the response to the STA using the mode of single user message and disappears Breath, or, the AP sends multi-user message to the STA, it include the response message in the multi-user message.

2. the method as described in claim 1, which is characterized in that the preset field in the ACK frame includes following field In at least two:

3. the method as described in claim 1, which is characterized in that the ACK frame is the frame format based on encapsulation control frame, described The preset field that the first information is carried in ACK frame is frame sub-type field.

4. method a method according to any one of claims 1-3, which is characterized in that the temporal information is the estimated response message Transmission time points, or, being come for described access point according to the delay time length that preset delay sends the response message true It is fixed, or, for described access point according to receive time point of the request message with it is expected that the response message transmission when Between the time difference put determine, or, for described access point according to the sending time point of the ACK frame and it is expected that the response The time differences of the transmission time points of message determines.

5. a kind of method for sending response message, which is characterized in that this method comprises:

Site STA sends request message to access point AP；

The STA receives the correct response instruction for the request message for indicating to have correctly received the STA that the AP is sent ACK frame, the ACK frame carry the first information and the second information, and the first information is used to indicate the AP delay to the STA The response message for responding the request message of the STA is sent to the STA, second information indicates the AP and sends The temporal information of the response message sends the transmission time points of the response message in the AP for indicating to the STA Before arrival, time span that the STA is needed to wait for；Wherein, the first information and second information are carried on the ACK In the preset field of frame；

The STA receives the ACK frame for carrying the first information and second information that the AP is sent；

The STA receives the AP when reaching the temporal information corresponding time with single user message or multi-user message The response message that sends of mode.

6. method as claimed in claim 5, which is characterized in that this method further include:

The STA before the temporal information that second information indicates corresponding time reaches in a dormant state.

7. method as claimed in claim 5, which is characterized in that the preset field of the ACK frame include in following field extremely It is two kinds few:

8. method as claimed in claim 5, which is characterized in that the ACK frame is the frame format based on encapsulation control frame, described The preset field that the first information is carried in ACK frame is frame sub-type field.

9. a kind of method for sending response message, which is characterized in that this method comprises:

Access point AP sends broadcast frame, so that site STA receives the broadcast frame, the downlink of the AP is carried in the broadcast frame Multi-user message transmission time information；

The AP passes through the request for being used for indicating to have correctly received the STA after the request message for receiving STA transmission The correct response of message instructs ACK frame to send instruction information to the STA, and the instruction information is used for described in STA instruction AP sends to the STA in the descending multi-user message transmission time information corresponding time and sends for responding the STA Request message response message；

The AP sends instruction information to the STA by the ACK frame, comprising:

The instruction information is carried in the preset field of the ACK frame by the AP；

The ACK frame for carrying the instruction information is sent to the STA by the AP；

When reaching the descending multi-user message transmission time information corresponding time, if the AP receives at least two The request message that STA is sent, then the AP sends each request at least two STA using the mode of multi-user message simultaneously The corresponding response message of message；If the AP only receives the request message of STA transmission, the AP is disappeared using single user The mode of breath sends the response message to the STA, or, the AP sends multi-user message, the multi-user to the STA It include the response message in message.

10. method as claimed in claim 9, which is characterized in that the preset field in the ACK frame includes in following fields Any one:

11. a kind of method for sending response message, which is characterized in that this method comprises:

Site STA receives the broadcast frame that access point AP is sent, and the descending multi-user message hair of the AP is carried in the broadcast frame Send temporal information；

The STA sends request message to the AP after receiving the broadcast frame；

The STA receives the correct response instruction ACK frame for being used to indicate to have correctly received the request message that the AP is sent, The ACK frame carries instruction information, and the instruction information is used to indicate the AP in the descending multi-user message to the STA The transmission time information corresponding time sends the response message for responding the request message to the STA；The ACK frame The instruction information is carried in preset field, the preset field in the ACK frame includes any one in following fields:

More segmentation indicating fields retry indication field, frame protection indication field and sequence indication field；

The STA receives the AP when reaching the descending multi-user message transmission time information corresponding time to be applied alone The response message that the mode of family message or multi-user message is sent.

12. method as claimed in claim 11, which is characterized in that this method further include:

The STA before the descending multi-user message transmission time information corresponding time reaches in a dormant state.

13. a kind of access point AP, which is characterized in that the AP includes:

Transceiver, the request message sent for receiving station STA；

It is also used to after receiving the request message that the STA is sent, Xiang Suoshu STA sends described for indicating to have correctly received The correct response of the request message of STA instructs ACK frame, and the ACK frame carries the first information and the second information, first letter It ceases for indicating that the AP postpones to send the response message for responding the request message of the STA to the STA to the STA, Second information indicates the temporal information that the AP sends the response message, for indicating to the STA in the AP Send the response message transmission time points arrive before, time span that the STA is needed to wait for；The transceiver is passing through When the ACK frame sends the first information and second information to the STA, it is specifically used for:

The first information and second information are carried in the preset field of the ACK frame；

The ACK frame for carrying the first information and second information is sent to the STA；

Processor, in the transmission time points arrival of the response message, if the transceiver is at least two STA The request message of transmission is then controlled the transceiver and at least two STA while being sent using the mode of multi-user message Response message；Alternatively, for when the transmission time points of the response message reach, if the transceiver only receives one The request message that STA is sent then is controlled the transceiver and is disappeared using the mode of single user message to the STA transmission response Breath sends multi-user message to the STA or, controlling the transceiver, includes the response message in the multi-user message.

14. access point as claimed in claim 13, which is characterized in that the preset field in the ACK frame includes following At least two in field:

15. access point as claimed in claim 13, which is characterized in that the ACK frame is the frame format based on encapsulation control frame, The preset field that the first information is carried in the ACK frame is frame sub-type field.

16. the access point as described in claim 13-15 is any, which is characterized in that the temporal information is the estimated sound The transmission time points of message are answered, or, long for the delay time that the processor sends the response message according to preset delay Degree to determine, or, for the processor according to receive time point of the request message with it is expected that the response message The time difference of transmission time points determines, or, for the processor according to the sending time point of the ACK frame and it is expected that institute The time difference of the transmission time points of response message is stated to determine.

17. a kind of site STA, which is characterized in that the STA includes:

Transceiver, for sending request message to access point AP；Receive the described for indicating to have correctly received of the AP transmission The correct response of the request message of STA instructs ACK frame, and the ACK frame carries the first information and the second information, first letter Breath is for indicating that the AP postpones to send the response message for responding the request message to the STA to the STA, described the Two information indicate the temporal information that the AP sends the response message, for sending institute in the AP to STA instruction State response message transmission time points arrive before, time span that the STA is needed to wait for；In the preset field of the ACK frame Carry the first information and second information；

Processor is reached for controlling the transceiver in the temporal information corresponding time that second information indicates When, receive the response message that the AP is sent in a manner of single user message or multi-user message.

18. website as claimed in claim 17, which is characterized in that the processor is also used to:

Before the temporal information corresponding time of second information instruction reaches, controls the STA and be in suspend mode shape State.

19. website as claimed in claim 17, which is characterized in that the preset field of the ACK frame includes in following field At least two:

20. website as claimed in claim 17, which is characterized in that the ACK frame is the frame format based on encapsulation control frame, institute Stating and carrying the preset field of the first information in ACK frame is frame sub-type field.

21. a kind of access point AP, which is characterized in that the AP includes:

Transceiver, so that site STA receives the broadcast frame, carries the AP's in the broadcast frame for sending broadcast frame Descending multi-user message transmission time information；Receive the request message that STA is sent after receiving the broadcast frame；It is receiving Pass through the correct response instruction of the request message for indicating to have correctly received the STA after the request message that one STA is sent ACK frame sends instruction information to the STA, and the instruction information is used to indicate the AP in the descending multi-user to the STA The message transmission time information corresponding time disappears to the response that the STA is sent for responding the request message that the STA is sent Breath；

Processor is used for when reaching the descending multi-user message transmission time information corresponding time, if the transceiver Receive at least two STA transmission request message, then control the transceiver using multi-user message mode to it is described extremely Few two STA send the corresponding response message of each request message simultaneously；If alternatively, only receiving one for the transceiver The request message that STA is sent then is controlled the transceiver and is disappeared using the mode of single user message to the STA transmission response Breath sends multi-user message to the STA or, controlling the transceiver, includes the response message in the multi-user message；

The transceiver is specifically used for when for sending instruction information to the STA by the ACK frame:

The instruction information that the processor determines is carried in the preset field of the ACK frame；

The ACK frame for carrying the instruction information is sent to the STA.

22. access point as claimed in claim 21, which is characterized in that the preset field in the ACK frame includes following fields In any one:

23. a kind of site STA, which is characterized in that the STA includes:

Transceiver, for receiving the broadcast frame of access point AP transmission, the descending multi-user that the AP is carried in the broadcast frame disappears Cease transmission time information；Request message is sent to the AP after receiving the broadcast frame；Receive being used for for the AP transmission Indicate that the correct response for having correctly received the request message instructs ACK frame, the ACK frame carries instruction information, the finger Show information for indicating the AP in the descending multi-user message transmission time information corresponding time to described to the STA STA sends the response message for responding the request message；The instruction letter is carried in the preset field of the ACK frame It ceases, the preset field in the ACK frame includes any one in following fields:

Processor is reached for controlling the transceiver in the descending multi-user message transmission time information corresponding time When, receive the response message that the AP is sent in a manner of single user message or multi-user message.

24. website as claimed in claim 23, which is characterized in that the processor is also used to: