CN106102183A - A kind of method sending response message and access point, website - Google Patents
A kind of method sending response message and access point, website Download PDFInfo
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- CN106102183A CN106102183A CN201510731891.2A CN201510731891A CN106102183A CN 106102183 A CN106102183 A CN 106102183A CN 201510731891 A CN201510731891 A CN 201510731891A CN 106102183 A CN106102183 A CN 106102183A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1657—Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
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Abstract
The invention provides a kind of method and device sending response message, the inventive method includes: access point AP receives the request message that at least two site STA sends in different time points respectively；Perform following steps: AP for each STA at least two STA and determine the first information and the second information；AP sends the first information and the second information by the correct response instruction ACK frame of the request message for replying STA to STA；AP, when the time that temporal information is corresponding arrives, sends response message to STA.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of method sending response message and access point,
Website.
Background technology
Wireless Fidelity (English: Wireless Fidelity, it is called for short: WiFi) technical standard " IEEE
802.11-2012 " it is a kind of based on the time-division with the wireless communication standard of competition, standard is pointed out, in any feelings
Under condition, and website being ready for sending message (English: Station, STA) or access point (English it is called for short:
Literary composition: Access Point, is called for short: AP) need to take competition mechanism to send message.
STA or AP use competition mechanism send message process referred to as backoff procedure in order to avoid by
Send message in two WiFi equipment simultaneously and clash the problem that the communication that causes cannot be carried out.But
Backoff procedure can not avoid the generation of information transmission conflict completely, for avoiding information transmission conflict to ask further
Topic, message sink end can send to message sending end within the scheduled time after receiving a message should
(English: Acknowledge is called for short: ACK), to indicate message sink end to answer frame the most correct response instruction
Being properly received this message, otherwise, message sending end decision message clashes.
As it is shown in figure 1, single user communication mechanism next one Basic Service Set (English: Basic Service Set,
It is called for short: in message request in BSS) and response process, each STA (includes STA1, STA2 and STA3)
Sequentially sending request message to AP, AP is also sequentially to send response message to each STA, at this
During, each request message and response message are required for being sent by competition mechanism, and in Fig. 1, request disappears
The square frame of breath or response message left side oblique line portion is for representing the backoff procedure used under competition mechanism.At list
Under telex network mechanism, it is required for before keeping out of the way owing to each message sends so that competitive channel uses secondary
Number is many, causes channel resource to waste.
Introducing descending multi-user communication mechanism, i.e. AP in " IEEE 802.11ac " can be simultaneously to multiple
STA sends downstream message.Such as, as in figure 2 it is shown, at descending multi-user communication mechanism next one BSS
In interior message request and response process, STA1, STA2 and STA3 the most sequentially send to AP please
Ask message 1, request message 2 and request message 3, for request message 1, request message 2 and request message
3, AP send multi-user's response message to STA1, STA2 and STA3 simultaneously replys, the most permissible
The access times of competitive channel in minimizing system, thus improve the utilization rate of channel.
If figure it is seen that AP determines to use multi-user's response message to send request message to multiple
STA reply simultaneously, then mean AP will not receive request message after send out to STA immediately
Go out multi-user's response message, but can deliberately postpone a period of time, in order to the request collecting multiple STA disappears
Breath sends multi-user's response message the most simultaneously.Owing to STA receives request except receiving ACK frame acknowledgment AP
It is not aware that outside message that AP uses multi-user's response message and could to send multi-user after how long loud
Answering message, therefore can only keep wake states, STA cannot during waiting AP to be received to send response message
Communicate with other equipment, dormancy can not be selected to reach the purpose of power saving.
Summary of the invention
Embodiments provide a kind of method and device sending response message, in order to realize at least
The request message that two websites send, during access point uses multi-user's response message to reply, stands
Point can communicate to promote work efficiency with other equipment, or website selects dormancy to save electric energy.
Certainly, if access point receives only one when the anticipated time point sending multi-user's response message arrives
The request message of website, then can use single user message to reply the website sending request message, or
Person, it is possible to use multi-user message, described multi-user message in this case can not merely comprise
Response message to the website that have sent request message, it is also possible to comprise and do not send the station asking message to other
The data etc. that point sends.
First aspect, the embodiment of the present invention provides a kind of method sending response message, it is characterised in that should
Method includes:
The request message that access point AP receiving station STA sends；
Described AP, after receiving the request message that described STA sends, sends for table to described STA
Showing the correct response instruction ACK frame of the request message having correctly received described STA, described ACK frame is taken
Having carried the first information and the second information, the described first information is for indicating described AP to postpone to institute to this STA
Stating STA and send the response message of the request message for responding described STA, described second information indicates
Described AP sends the temporal information of described response message, for sending at described AP to described STA instruction
Before the transmission time points of described response message arrives, the time span that described STA needs to wait for；
When the transmission time points of described response message arrives, send out if described AP receives at least two STA
The request message sent, the most described AP uses the mode of multi-user message to send out to described at least two STA simultaneously
Send response message；If described AP only receives the request message that a STA sends, the most described AP uses
The mode of single user message sends described response message to described STA, or, described AP is to described STA
Sending multi-user message, described multi-user message includes described response message.
In conjunction with first aspect, in the first implementation, described AP passes through described ACK frame to described
STA sends the described first information and described second information, including:
The described first information and described second information are carried on the preset field of described ACK frame by described AP
In；
The described ACK frame carrying the described first information and described second information is sent to institute by described AP
State STA.
In conjunction with the first implementation of first aspect, in the second implementation of first aspect, ACK
Preset field in frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
In conjunction with the first implementation of first aspect, in the third implementation of first aspect, ACK
Frame is frame format based on encapsulation control frame, and the preset field carrying the first information in ACK frame is frame subclass
Type-word section.
In conjunction with first aspect, or the first of first aspect is to any one in the third implementation,
In the 4th kind of implementation on the one hand, described temporal information is the transmission time of anticipated described response message
Point, or, come really according to length time delay postponing to send described response message preset for described access point
Fixed, or, disappear according to the time point and anticipated described response that receive described request message for described access point
The time difference of the transmission time points of breath determines, or, for described access point sending out according to described ACK frame
The time difference sending the transmission time points of time point and anticipated described response message determines.
Second aspect, the embodiment of the present invention provides a kind of method sending response message, and the method includes:
Site STA sends request message to access point AP；
Described STA receives the request message having correctly received described STA for expression that described AP sends
Correct response instruction ACK frame, described ACK frame carries the first information and the second information, described first
Information is used for indicating described AP to postpone to described STA to this STA and sends for responding asking of described STA
Ask the response message of message, described second information to indicate described AP and send the time letter of described response message
Breath, for indicating before described AP sends the transmission time points arrival of described response message to described STA,
The time span that described STA needs to wait for；
Described STA, when the time that described temporal information is corresponding arrives, receives described AP with single user message
Or the described response message that the mode of multi-user message sends.
In conjunction with second aspect, in the first implementation, the method also includes:
STA before time corresponding to the temporal information that the second information indicates arrives in a dormant state.
In conjunction with the first implementation of second aspect or second aspect, in the second realization side of second aspect
In formula, the preset field of ACK frame carries the first information and the second information.
In conjunction with the second implementation of second aspect, in the third implementation of second aspect, ACK
The preset field of frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
In conjunction with the second implementation of second aspect, in the 4th kind of implementation of second aspect, ACK
Frame is frame format based on encapsulation control frame, and the preset field carrying the first information in ACK frame is frame subclass
Type-word section.
The third aspect, the embodiment of the present invention provides a kind of method sending response message, and the method includes:
Access point AP sends broadcast frame, so that site STA receives described broadcast frame, takes in described broadcast frame
Descending multi-user message transmission time information with described AP；
Described AP receives the request message that STA sends after receiving described broadcast frame；
Described AP passes through to have correctly received institute for expression after receiving the request message that a STA sends
The correct response instruction ACK frame of the request message stating STA sends instruction information, described finger to described STA
Show that information is for indicating described AP corresponding at described descending multi-user message transmission time information to this STA
Time sends the response message for responding the request message that described STA sends to described STA；
When the time that described descending multi-user message transmission time information is corresponding arrives, if described AP receives
To at least two STA send request message, the most described AP use multi-user message mode to described extremely
Few two STA send the response message that each request message is corresponding simultaneously；If described AP only receives one
The request message that STA sends, the most described AP uses the mode of single user message to send described to described STA
Response message, or, described AP sends multi-user message to described STA, and described multi-user message includes
Described response message.
Wherein, described descending multi-user message transmission time information may refer to show anticipated described multi-user
The time span of the transmission time points of the described multi-user message that the transmission time points of message or distance are estimated.
In conjunction with the third aspect, in the first implementation, described AP passes through described ACK frame to STA
Send instruction information, including:
Instruction information is carried in the preset field of ACK frame by AP；
The ACK frame carrying instruction information is sent to STA by AP.
In conjunction with the first implementation of the third aspect, in the second implementation of the third aspect, ACK
Preset field in frame includes any one in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
Fourth aspect, the embodiment of the present invention provides a kind of method sending response message, and the method includes:
Site STA receives the broadcast frame that access point AP sends, and carries under described AP in described broadcast frame
Row multi-user message transmission time information；
Described STA sends request message to described AP after receiving described broadcast frame；
Described STA receives the expression that is used for of described AP transmission and has correctly received just should indeed of described request message
Answering instruction ACK frame, described ACK frame carries instruction information, and described instruction information is for this STA
Described AP is indicated to send to described STA in the time that described descending multi-user message transmission time information is corresponding
For responding the response message of described request message；
Described STA, when the time that described descending multi-user message transmission time information is corresponding arrives, receives institute
State the described response message that AP sends in the way of single user message or multi-user message.
In conjunction with fourth aspect, in the first implementation, the method also includes:
STA before time corresponding to descending multi-user message transmission time information arrives in a dormant state.
In conjunction with the first implementation of fourth aspect or fourth aspect, in the second realization side of fourth aspect
In formula, carrying instruction information in the preset field of ACK frame, the preset field in ACK frame includes following
Any one in field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
5th aspect, the embodiment of the present invention provides a kind of access point AP, including:
Transceiver, the request message sent for receiving station STA；
It is additionally operable to after receiving the request message that described STA sends, sends to described STA and be used for representing
Having correctly received the correct response instruction ACK frame of the request message of described STA, described ACK frame carries
The first information and the second information, the described first information is for indicating described AP to postpone to described to this STA
STA sends the response message of the request message for responding described STA, and described second information indicates institute
State AP and send the temporal information of described response message, for sending institute to described STA instruction at described AP
Before stating the transmission time points arrival of response message, the time span that described STA needs to wait for；
Processor, for when the transmission time points of described response message arrives, if described transceiver arrives
The request message that at least two STA sends, then control described transceiver and use the mode of multi-user message to institute
State at least two STA and send response message simultaneously；Or, for the transmission time points at described response message
During arrival, if described transceiver only receives the request message that a STA sends, then control described transceiver
Use single user message mode to described STA send described response message, or, control described transceiver to
Described STA sends multi-user message, and described multi-user message includes described response message.
In conjunction with the 5th aspect, in the first implementation, described transceiver by described ACK frame to
When STA sends the first information and the second information, specifically for:
The described first information and described second information are carried in the preset field of ACK frame；
The ACK frame carrying the first information and the second information is sent to STA.
In conjunction with the first implementation of the 5th aspect, in the second implementation of the 5th aspect, ACK
Preset field in frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
In conjunction with the first implementation of the 5th aspect, in the third implementation of the 5th aspect, ACK
Frame is frame format based on encapsulation control frame, and the preset field carrying the first information in ACK frame is frame subclass
Type-word section.
In conjunction with the 5th aspect, or the first of the 5th aspect is to any one in the third implementation,
In 4th kind of implementation of five aspects, described temporal information is the transmission time of anticipated described response message
Point, or, come really according to length time delay postponing to send described response message preset for described processor
Fixed, or, disappear according to the time point and anticipated described response that receive described request message for described processor
The time difference of the transmission time points of breath determines, or, for described processor sending out according to described ACK frame
The time difference sending the transmission time points of time point and anticipated described response message determines.
6th aspect, the embodiment of the present invention provides a kind of site STA, it is characterised in that this STA includes:
Transceiver, for sending request message to access point AP；Receive described AP send for representing
Having correctly received the correct response instruction ACK frame of the request message of described STA, described ACK frame carries
The first information and the second information, the described first information is for indicating described AP to postpone to described to this STA
STA sends the response message for responding described request message, and described second information indicates described AP and sends out
Send the temporal information of described response message, disappear for sending described response to described STA instruction at described AP
Before the transmission time points of breath arrives, the time span that described STA needs to wait for；
Processor is corresponding in the described temporal information of described second information instruction for controlling described transceiver
When time arrives, receive the described response that described AP sends in the way of single user message or multi-user message
Message.
In conjunction with the 6th aspect, in the first implementation, described processor is additionally operable to:
Before the time that the described temporal information of the second information instruction is corresponding arrives, control described STA and be in
Resting state.
In conjunction with the 6th aspect or the first implementation of the 6th aspect, in the second realization side of the 6th aspect
In formula, the preset field of ACK frame carries the first information and the second information.
In conjunction with the second implementation of the 6th aspect, in the third implementation of the 6th aspect, ACK
The preset field of frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
In conjunction with the second implementation of the 6th aspect, in the 4th kind of implementation of the 6th aspect, ACK
Frame is frame format based on encapsulation control frame, and the preset field carrying the first information in ACK frame is frame subclass
Type-word section.
7th aspect, the embodiment of the present invention provides a kind of access point AP, including:
Transceiver, is used for sending broadcast frame, so that site STA receives described broadcast frame, in described broadcast frame
Carry the descending multi-user message transmission time information of described AP；Receive STA and receive described broadcast frame
The request message of rear transmission；By correctly connecing for representing after receiving the request message that STA sends
The correct response instruction ACK frame of the request message receiving described STA sends instruction information to described STA,
Described instruction information is for indicating described AP at described descending multi-user message transmission time information to this STA
The corresponding time sends the response message for responding the request message that described STA sends to described STA；
Processor, when the time corresponding at described descending multi-user message transmission time information arrives, if
The request message that described transceiver sends at least two STA, then control described transceiver and use multiplex
The mode of family message sends, to described at least two STA, the response message that each request message is corresponding simultaneously；Or
Person, if only receiving, for described transceiver, the request message that a STA sends, then controls described transceiver
Use single user message mode to described STA send described response message, or, control described transceiver to
Described STA sends multi-user message, and described multi-user message includes described response message.
In conjunction with the 7th aspect, in the first implementation, described transceiver is for by described ACK
Frame to STA send instruction information time, specifically for:
The instruction information determined by described processor is carried in the preset field of ACK frame；
The ACK frame carrying instruction information is sent to STA.
In conjunction with the first implementation of the 7th aspect, in the second implementation of the 7th aspect,
Preset field in ACK frame includes any one in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
Eighth aspect, the embodiment of the present invention provides a kind of STA, including:
Transceiver, for receiving the broadcast frame that access point AP sends, carries described AP in described broadcast frame
Descending multi-user message transmission time information；Request is sent to described AP after receiving described broadcast frame
Message；Receive the correct response instruction having correctly received described request message for expression that described AP sends
ACK frame, described ACK frame carries instruction information, and described instruction information is for described to this STA instruction
AP was used for responding to described STA transmission in the time that described descending multi-user message transmission time information is corresponding
The response message of described request message；
Processor is corresponding at described descending multi-user message transmission time information for controlling described transceiver
When time arrives, receive the described response that described AP sends in the way of single user message or multi-user message
Message.
In conjunction with eighth aspect, in the first implementation, described processor is additionally operable to:
Control described STA to be in before the time that descending multi-user message transmission time information is corresponding arrives
Resting state.
In conjunction with the first implementation of eighth aspect or eighth aspect, in the second realization side of eighth aspect
In formula, carrying instruction information in the preset field of ACK frame, the preset field in ACK frame includes following
Any one in field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
9th aspect, the embodiment of the present invention provides a kind of AP, including:
Transceiver, the request sent in different time points for receiving at least two site STA respectively disappears
Breath；
Processor, for for STA each at least two STA, determines the first information and the second information,
The first information uses multi-user's response mode to send for responding asking of STA to STA for indicating transceiver
Seeking the response message of message, the second information sends the temporal information of response message for indicating transceiver；
Transceiver, is additionally operable to for STA each at least two STA, by for replying asking of STA
The correct response instruction ACK frame seeking message sends the first information and the second information to STA；In temporal information
When the corresponding time arrives, send response message to STA.
In conjunction with the 9th aspect, in the first implementation, transceiver is by the request for replying STA
The ACK frame of message sends the first information and during the second information to STA, specifically for:
The first information and the second information that are determined by processor are carried in the preset field of ACK frame；
The ACK frame carrying the first information and the second information is sent to STA.
In conjunction with the 9th aspect or the first implementation of the 9th aspect, in the second realization side of the 9th aspect
In formula, the preset field in ACK frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
In conjunction with the first implementation of the 9th aspect, in the third implementation of the 9th aspect, ACK
Frame is frame format based on encapsulation control frame, and the preset field carrying the first information in ACK frame is frame subclass
Type-word section.
Tenth aspect, the embodiment of the present invention provides a kind of multi-user's response message to use device, including:
Transceiver, for sending request message to access point AP；Receive AP transmission carries the first information
Correct response with the second information instructs ACK frame, and ACK frame is used for replying the request message that transceiver sends,
The first information uses multi-user's response mode to send for response request message to transceiver for indicating AP
Response message, the second information sends the temporal information of response message for indicating AP；
Processor, for control transceiver the temporal information that the second information indicate corresponding time arrival time,
Receive AP and send response message；
Transceiver, is additionally operable to, when the time that the temporal information of the second information instruction is corresponding arrives, receive AP
Send response message.
In conjunction with the tenth aspect, in the first implementation, processor is additionally operable to:
Before the time that the temporal information of the second information is corresponding arrives, the site STA controlling its place is in
Resting state.
In conjunction with the tenth aspect or the first implementation of the tenth aspect, in the second realization side of the tenth aspect
In formula, the preset field of ACK frame carries the first information and the second information.
In conjunction with the second implementation of the tenth aspect, in the third implementation of the tenth aspect, ACK
The preset field of frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
In conjunction with the first implementation of the tenth aspect, in the 4th kind of implementation of the tenth aspect, ACK
Frame is frame format based on encapsulation control frame, and the preset field carrying the first information in ACK frame is frame subclass
Type-word section.
11st aspect, the embodiment of the present invention provides a kind of multi-user's response message to use device, including:
Transceiver, is used for sending broadcast frame, so that at least two site STA receives broadcast frame, in broadcast frame
Carry the descending multi-user message transmission time information of transceiver；Receive at least two site STA respectively not
With the request message sent on time point；
For STA each at least two STA, processor, for determining that instruction information, instruction information are used
It is used for ringing to STA transmission in the time that descending multi-user message transmission time information is corresponding in instruction transceiver
Answer the response message of the request message that STA sends；
Described transceiver, is additionally operable to for STA each at least two STA, replys STA by being used for
Request message correct response instruction ACK frame to STA send instruction information；For at least two STA
In each STA, when time corresponding to descending multi-user message transmission time information arrives, send out to STA
Send response message.
In conjunction with the 11st aspect, in the first implementation, transceiver disappears in the request being used for replying STA
Breath ACK frame to STA send instruction information time, specifically for:
The instruction information determined by processor is carried in the preset field of ACK frame；
The ACK frame carrying instruction information is sent to STA.
In conjunction with the first implementation of the 11st aspect, in the second implementation of the 11st aspect,
Preset field in ACK frame includes any one in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
12nd aspect, the embodiment of the present invention provides a kind of multi-user's response message to use device, including:
Transceiver, for receiving the broadcast frame that access point AP sends, carries the descending many of AP in broadcast frame
User message transmission time information；Request message is sent to AP；Receive AP transmission carries instruction information
Correct response instruction ACK frame, ACK frame is for replying the request message of STA, and instruction information is used for referring to
Show that AP uses multi-user's response mode to STA in the time that descending multi-user message transmission time information is corresponding
Send the response message for response request message；
Processor, arrives in the time that descending multi-user message transmission time information is corresponding for controlling transceiver
Time, receive the response message that AP sends；
Transceiver, is additionally operable to, when the time that descending multi-user message transmission time information is corresponding arrives, receive
The response message that AP sends.
In conjunction with the 12nd aspect, in the first implementation, processor is additionally operable to:
Controlled the STA at its place before the time that descending multi-user message transmission time information is corresponding arrives
In a dormant state.
In conjunction with the 12nd aspect or the first implementation of the 12nd aspect, at the second of the 12nd aspect
In implementation, the preset field of ACK frame carries instruction information, the preset field bag in ACK frame
Include in following field any one:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
In various embodiments of the present invention, after AP receives the request message that STA sends, take in ACK frame
(i.e. use many with the first information will carry out in the way of using multi-user message responding to STA instruction AP
User's response mode replys response message to STA), its essence is for postponing to STA instruction AP
A period of time replys response message to STA.If sending time point to soothing the liver in anticipated multi-user message
Before, AP receives the request message of multiple STA, then AP can be to many in the way of using multi-user message
The individual STA that have sent request message sends response message；And if sent at predetermined multi-user's response message
When time point arrives, AP receives only the request message of a STA, then AP can use conventional list
User message sends response message to this STA, or, described AP can also send many to described STA
User message, described multi-user message includes described response message.Therefore described multi-user's response message
Using method its be in the nature delay response message using method, and can be summarised as send response message side
Method.The essence of the first information is for delay response mode being used to send out to STA to STA instruction AP
Send the response message of request message for responding STA.Described AP indicated by second information postpones to send
The essence of the temporal information of described response message is, disappears for sending described response to described STA instruction AP
The temporal information that breath is postponed, this temporal information can be the transmission time of anticipated descending multi-user message
Point, it is also possible to send time point and the biography of anticipated descending multi-user message according to ACK frame for access point
The time difference of defeated time point determines, it is also possible to for described access point according to receiving described request message
The time difference of the transmission time points of time point and anticipated described multi-user message determines.AP estimates
When the transmission time points of descending multi-user message is not meant to the transmission of anticipated descending multi-user message
Between point arrive time must transmit multi-user message.Multi-user message is meant that, AP uses OFDMA
(Orthogonal Frequency Division Multiple Access, OFDM) or MU-MIMO
Multi-user transmission mechanism such as (Multi-User Multiple-Input Multiple-Output, multi-user's multiple-input, multiple-output)
Transmit the message that should be transferred to each STA, then the meaning of multi-user's response message to multiple STA simultaneously
May refer to AP and use the multi-user transmission mechanism such as OFDMA or MU-MIMO to multiple STA simultaneously
Transmit the response message of the request message that each STA sends.Multi-user's response message the most only comprises STA
The response message of the request message sent, it is also possible to comprise other message, such as only one of which STA and have sent
During request message, then AP can use single user to disappear when anticipated multi-user message transmission time points arrives
The mode of breath sends response message to this STA, or, it is possible to use the mode of multi-user message, this
In the case of multi-user message in can comprise to the response message of this STA, and AP is actively to other
Other message etc. that STA sends, such multi-user message is referred to as multi-user's response message.Alone
Family message refers to the message under single user transmission mechanism, specifically can alone as defined in IEEE 802.11
The message of transmission in the frame format of family.
In some embodiments of the present invention, at least two STA sequentially send for request data package
Request message, after the request message that any one STA in receiving at least two STA of AP sends,
AP will be by many to STA instruction AP by carrying the ACK frame of the first information and described second information
User's response mode replys response message to this STA, and AP sends the time letter of multi-user's response message
Breath.On the one hand, from the ACK frame that AP sends, STA knows that AP sends the time letter of multi-user's response message
After breath, STA can select the time the temporal information of AP transmission multi-user's response message is corresponding to arrive it
Before in a dormant state, and when time corresponding to temporal information that AP sends multi-user's response message arrives
Multi-user's response message that the AP to be received such as revive sends, and then reach to save the purpose of STA electric energy；Or
Person, STA can select before the time that the temporal information of AP transmission multi-user's response message is corresponding arrives
Communicate with other equipment, and then improve the work efficiency of STA.On the other hand, AP uses multi-user
The mode of message sends response message to multiple STA that have sent request message simultaneously, decreases AP to letter
Road contention number of times, thus improve channel transport efficiency.
In some embodiments of the invention, for anticipated multi-user message send time point arrive time, AP
Only receive the situation of the request message that a STA sends.AP is receiving the request that described STA sends
After message, the correct response sending the request message for replying described STA to described STA instructs ACK
Frame, described ACK frame carries the first information and the second information, and the described first information is for referring to this STA
Show that described AP postpones to send the response message of request message for responding described STA to described STA,
Described second information is the temporal information that described AP postpones to send described response message, for described STA
Indicating before described AP sends the transmission time points arrival of described response message, described STA needs to wait for
Time span.On the one hand, described STA from the ACK frame that AP sends obtain AP postpone send response disappear
Breath temporal information after, STA can select AP send postpone response message before in a dormant state,
And the response message being in wake states to receive AP transmission is guaranteed when AP sends response message, reach
Save the purpose of STA electric energy；Or, STA can select to set with other before AP sends response message
For communicating, and guarantee when AP sends response message to be in state to be received to receive what AP sent
Response message, thus improve the work efficiency of STA.On the other hand, AP is sending described response message
When transmission time points arrives, only receiving the request message that described STA sends, the most described AP can use
The mode of single user message sends described response message to described STA, or, described AP is to described STA
Sending multi-user message, described multi-user message includes described response message, the most described AP
In the multi-user message sent in addition to including described response message, it is also possible to include that described AP is to other
The message that STA sends, which reduces the AP contention number of times to channel, thus improves channel usage effect
Rate.
In other embodiments of the present invention, access point AP sends broadcast frame, so that site STA receives described
Broadcast frame, carries the descending multi-user message transmission time information of described AP in described broadcast frame.Described AP
After receiving the request message that site STA sends after receiving described broadcast frame, represent correct by being used for
The correct response instruction ACK frame of the request message receiving described STA sends instruction information to described STA,
Described instruction information is for indicating to described STA, and described AP sends the time in described descending multi-user message
Time corresponding to information sends to described STA and disappears for the response responding the request message that described STA sends
Breath.Described AP is when the time that described descending multi-user message transmission time information is corresponding arrives, to described
STA sends described response message.On the one hand, the STA receiving described instruction information disappears in described response
The transmission time point of breath can select to carry out dormancy and communicate to carry with power saving or with other equipment before arriving
The work efficiency of high STA.On the other hand, similarly, if in transmission time of described descending multi-user message
When point arrives, described AP receives the request message that at least two STA sends, and the most described AP can make
Send response message by multi-user message to described at least two STA simultaneously, so can reduce AP to letter
The contention number of times in road, thus improve channel transport efficiency；If the transmission time in described descending multi-user message
When point arrives, described AP only receives the request message that a STA sends, and the most described AP can use
The mode of single user message sends response message to described STA, or, described AP sends out to described STA
Described response message, the most described AP are sent out to send multi-user message, described multi-user message to include
In the multi-user message sent in addition to including described response message, also include that described AP sends to other STA
Message, which reduce the AP contention number of times to channel, thus improve channel transport efficiency.
Accompanying drawing explanation
Fig. 1 is that prior art in the message request of single user communication mechanism next one Basic Service Set and responded
Journey schematic diagram；
Fig. 2 is that prior art in the message request of multi-user communication mechanism next one Basic Service Set and responded
Journey schematic diagram；
A kind of multi-user's response message using method schematic flow sheet that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 is the format structure schematic diagram of ACK frame in prior art；
Request message and response message is sent between a kind of AP and STA that Fig. 5 provides for the embodiment of the present invention
Interaction schematic diagram；
Request message and response message is sent between a kind of AP and STA that Fig. 6 provides for the embodiment of the present invention
Interaction schematic diagram；
The format structure schematic diagram of the extension ACK frame that Fig. 7 provides for the embodiment of the present invention；
Request message and response message is sent between a kind of AP and STA that Fig. 8 provides for the embodiment of the present invention
Interaction schematic diagram；
The ACK frame structure signal of the frame format based on encapsulation control frame that Fig. 9 provides for the embodiment of the present invention
Figure；
Request message and response message is sent between a kind of AP and STA that Figure 10 provides for the embodiment of the present invention
Interaction schematic diagram；
A kind of multi-user's response message using method schematic flow sheet that Figure 11 provides for the embodiment of the present invention；
Request message and response message is sent between a kind of AP and STA that Figure 12 provides for the embodiment of the present invention
Interaction schematic diagram；
A kind of multi-user's response message using method schematic flow sheet that Figure 13 provides for the embodiment of the present invention；
A kind of multi-user's response message that Figure 14 provides for the embodiment of the present invention uses apparatus structure schematic diagram；
A kind of multi-user's response message that Figure 15 provides for the embodiment of the present invention uses apparatus structure schematic diagram；
A kind of multi-user's response message that Figure 16 provides for the embodiment of the present invention uses apparatus structure schematic diagram；
A kind of multi-user's response message that Figure 17 provides for the embodiment of the present invention uses apparatus structure schematic diagram；
A kind of multi-user's response message that Figure 18 provides for the embodiment of the present invention uses apparatus structure schematic diagram；
A kind of multi-user's response message that Figure 19 provides for the embodiment of the present invention uses apparatus structure schematic diagram；
A kind of multi-user's response message that Figure 20 provides for the embodiment of the present invention uses apparatus structure schematic diagram；
A kind of multi-user's response message that Figure 21 provides for the embodiment of the present invention uses apparatus structure schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is retouched
State, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are institute under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
The technical scheme that the embodiment of the present invention provides is applicable to the WiFi communication system of multi-user, access point AP
And carry out message request and response employing backoff procedure between site STA, at least two STA sequentially
The request message sent, AP uses multi-user's response message to reply simultaneously.
Wherein, backoff procedure refers to, before message sending end sends message, first in the range of a numerical value
Randomly generate the initial value of a count value, and monitor the letter for sending message with regular hour unit
Road.If channel is in Idle state, count value is subtracted one；Otherwise, channel be not at Idle state then keep counting
It is worth constant, until being further continued for subtracting one by count value when channel is in Idle state.Then disappear when count value reduces to 0
Breath transmitting terminal can send message.But backoff procedure can not avoid the generation of information transmission conflict completely, for
Avoiding information transmission conflict problem further, message sink end can be in the scheduled time after receiving a message
Acknowledgement frame (ACK) is sent to message sending end in scope, to indicate message sink end to be properly received this message,
Otherwise, message sending end decision message clashes.
In WiFi communication system, (English Medium Access Control, is called for short: MAC) medium education
The frame (frame) of layer is divided into three kinds, is control frame, management frame, Frame respectively.
Wherein, control frame is for most basic control, and such as, correct response instruction ACK frame is exactly one
Control frame, it is correctly received a management frame or Frame for expression.
Management frame between STA and AP or STA and STA exchange management information, such as, STA to
AP sends a request message (i.e. one management frame), and request message can be association request (Association
Request), certification request (Authentication Request), interpolation transmission stream request (ADDTS
Request) or create direct connected link request (DLS Request), various measurement requests etc., then AP exists
First can send an ACK frame to STA after having correctly received this request message, resolve the most again and process
The request message of STA, in order to send response message (another manages frame) to STA.STA is properly received
Also ACK frame should be sent to AP after response message.
Management frame is used for realizing the managerial function of WiFi communication system, and Frame is then used for realizing WiFi
The communication function of communication system, Frame carrying upper-layer protocol message, such as Internet Protocol (English:
Internet Protocol, is called for short: IP) message.Data frame receipt needs to number after rectifying true receiving data frames
ACK frame is replied according to frame transmitting terminal.A kind of special circumstances are that STA sends a uplink data frames to AP,
Triggering AP and send the downlink data frame of caching to STA, now AP directly can send lower line number to STA
According to frame, a bit instruction is used to have been received by the upstream data sent before this STA in downlink data frame
Frame.Certainly the uplink data frames that AP can also first send for STA sends ACK frame to STA, afterwards
The downlink data frame of caching is sent again to STA.Here the uplink data frames that can also be sent by STA is permissible
Be considered as a request message, i.e. request AP sends downlink data frame, is regarded by the downlink data frame that AP sends
For the response message to the uplink data frames that STA sends.
In the technical scheme that the embodiment of the present invention provides, the request sequentially sent at least two STA
Message, AP, after receiving request message, indicates whether AP makes in the ACK frame that request message is corresponding
The request message sent STA with multi-user's response message is replied.If AP does not use multi-user to ring
Answer message, then STA can disappear according to the single user response that current mechanism keeps wake states to wait that AP sends
Breath is until time-out；If AP uses multi-user's response message, then STA can just should indeed from what AP sent
Answer and instruction ACK or broadcast frame being known, AP sends the moment of multi-user's response message, in order to STA is permissible
Select AP send multi-user's response message moment arrive before in a dormant state, and AP send
Moment of multi-user's response message such as revives when arriving at multi-user's response message that AP to be received sends, and then
Reach to save the purpose of STA electric energy.Certainly, STA can also select to send multi-user's response message at AP
Moment arrive before keeps reviving, in order to communicate, to improve the work efficiency of STA with other websites.
Embodiment one
As it is shown on figure 3, the embodiment of the present invention provides a kind of multi-user's response message using method, the method is held
Row main body is AP, and the method includes:
S301, access point AP receive the request that at least two site STA sends in different time points respectively
Message；
S302, at least two STA each STA perform following steps:
AP determines the first information and the second information, and the first information is used for indicating AP to use multi-user's response mode
Send the response message being used for responding the request message of STA to STA, the second information is used for indicating AP to send out
Send the temporal information of response message；AP is instructed by the correct response of the request message for replying STA
ACK frame sends the first information and the second information to STA；AP when time corresponding to temporal information arrives,
Response message is sent to STA.
In the present embodiment, the request message whether AP uses multi-user's response message to send STA is carried out back
Multiple, determine depending on practical situation.Such as, when the request message that AP receives STA transmission is more, permissible
The request message using multi-user's response message that STA is sent is selected to reply.Use alone for AP
The scene that message is replied one by one is asked in STA transmission by family response message, does not do concrete in the present embodiment
Limit.
In the present embodiment, the ACK frame of the request message for replying STA is that AP receives asking of STA
" immediately " reply to STA after seeking message, but in real process AP receive the request message of STA with
Needing certain time interval between transmission ACK frame is current mechanism, and here is omitted.
Sent out to STA by the correct response instruction ACK frame of the request message for replying STA for AP
Send the first information and the second information, can have following three kinds of implementations:
The first implementation, the ACK frame carrying the first information and the second information is sent to STA by AP,
This ACK frame includes carrying the first information and the preset field of the second information, and this preset field can be existing
ACK frame in four spare field at least two, specifically include: more segmentation indicating fields, weight
Examination indication field, frame protection indication field and order indication field.Below to four in existing ACK frame
Spare field illustrates:
Frame type instruction as shown in Figure 4, in the format structure of existing ACK frame, in frame control field
This is a control frame, and frame subtype indicates this to be an ACK frame, has four in the form of existing ACK frame
Individual bit does not has physical meaning in ACK frame, default is set to 0, and these four bits are referred to as spare field,
Specifically include: more segmentation indicating fields, retry indication field, frame protection indication field and order instruction word
Section.Owing to any one field in these four spare field all comprises a bit, accordingly it is also possible to will
Aforementioned four spare field be referred to as more segmentation indication bit, retry indication bit, frame protection indication bit and
Sequentially indication bit.
More segmentation indicating fields: a long message can use multiple mac frame to carry, a MAC
Frame carries a segmentation of message.More segmentation indicating fields be used for indicating follow-up whether have more segmentation with
The content of this frame carrying belongs to same message.Owing to control frame is the shortest and the smallest, it is impossible to there is other point
Section, the most more segmentation indicating fields in ACK frame without practical significance.
Retry indication field: if a management frame or Frame are sent failure, can be retransmitted, retry finger
Show that field is for indicating whether this frame is the frame retransmitted.Owing to control frame is retransmitted never, therefore retry finger
Show field in ACK frame without practical significance.
Frame protection indication field: for the most encrypted protection of data division indicating this frame to carry.Due to control
Frame processed need not encrypted protection, in addition ACK frame does not has data division, and therefore frame protection indication field exists
Without practical significance in ACK frame.
Sequentially indication field: whether the content for indicating Frame to carry exists sequencing relation.Due to
Control frame is not related to sequencing problem, therefore order indication field in ACK frame without practical significance.
For the first implementation, to utilize the aforementioned four spare field in ACK frame to carry the first letter
As a example by breath and the second information, illustrated by following two example:
Example one
For four spare field in ACK frame, utilize wherein any one spare field carrying the first letter
Breath, utilizes three spare field of residue to carry the second information.Will wherein any one spare field as many
User responds instruction, and (English: Multiple Response Indication is called for short: MRI) field, MRI
Being to represent that AP does not use multi-user's response message during the first value (0), MRI is to represent during the second value (1)
AP uses multi-user's response message, utilizes three spare field instruction AP of residue to send multi-user's response message
Temporal information, STA AP send multi-user's response message moment arrive before need wait, in this section
In the time waited, STA may be at resting state, and therefore three spare field of residue may indicate that STA's
Can dormancy time (referring to DT herein, DT full name is Deferred Time).
STA specifically described herein can dormancy time can be described with the communication between pointer pair and this AP
The time that STA can be free to arrange, can be during dormancy time in this section, STA can carry out dormancy, or,
Can also communicate with other equipment in addition to this AP.
Using by more segmentation indicating fields as a example by MRI field, if AP determines to use multi-user's response to disappear
Breath, then be set to the second value (1) by MRI corresponding for segmentation indicating fields more in ACK frame.AP utilizes
Retrying indication field, frame protection indication field and order three spare field of indication field can to indicate STA
Dormancy time (DT), is referred to as DT field by the field that these three spare field synthesizes in example 1.Due to DT
Field has three bits, and value is 0～7, then the STA of DT field instruction can the value model of dormancy time
Enclosing is 0～7 unit of time, and this unit of time can be configured according to practical situation.
STA can the maximum occurrences of dormancy time can set according to the time-out time (timeout) of system
Put.The time-out time of system refers to, after STA sends request message, if the most not receiving
To any response message, STA then thinks will not receive any response message, and this time interval is referred to as time-out
Time.Assume the STA that the time-out time of default is the instruction of T, DT field can dormancy time minimum
0, maximum not can exceed that T, and owing to DT field only has three bits, span is 0～7, represents STA's
Can the span of dormancy time be 0～7 unit of time, therefore this unit of time could be arranged to seven than T
/ mono-is smaller, naturally it is also possible to is set to 1/7th of T.The purpose so arranging unit of time is true
Protect STA AP be ready for sending multi-user's response message moment arrive before stop resting state, with etc. waiting
Receive multi-user's response message that AP sends, the present embodiment can also arrange DT field according to practical situation and refer to
The STA's shown can the span of dormancy time and unit of time.
In conjunction with example one, Fig. 5 show between AP and STA the interaction sending request message with response message,
After AP receives the request message 1 that STA1 sends, determine that being deferred to the X moment disappears to the STA1 multiplex response of transmission
Breath, owing to request message 1 is first the request message that AP receives, therefore, is set to maximum by DT field
Value 7, and the MRI of ACK frame is set to 1.Certainly AP is not necessarily intended to when receiving first request message
The maximum being positioned to allow for by the STA dormancy time that DT field indicates, can set as the case may be
Put.STA1 receive AP send ACK after, after 7 unit of time of dormancy stop dormancy, with etc. to be received
Multi-user's response message that AP sends.When AP receives the request message 2 that STA2 sends, now distance AP
The X moment of transmission multi-user's response message, then the MRI of ACK frame was arranged by AP less than 5 unit of time
It is 1, and DT field is set to 4.After STA2 receives the ACK that AP sends, after 4 unit of time of dormancy
Stop dormancy, with etc. AP to be received send multi-user's response message.AP receives the request that STA3 sends
During message 3, now distance AP sends the X moment of multi-user's response message less than 1 unit of time, then AP
The MRI of ACK frame is set to 1, but DT field is set to 0.After STA1 receives the ACK that AP sends,
Keep wake states with etc. AP to be received send multi-user's response message.
AP uses competition mechanism to send multi-user's response message when the X moment arrives, and keeps out of the way owing to existing
Journey, AP might not rob immediately in the X moment and account for channel transmission multi-user's response message, and therefore AP is actual
The time point sending multi-user's response message may be later than the X moment.Each STA waits after stopping resting state
Receive multi-user's response message of AP transmission and this multi-user's response message is replied ACK.
Example two
Using four idle bits in ACK frame as an entirety, the common carrying first information and the second letter
Breath, in order to distinguish with the DT field in example one, is referred to as expanding by the field of four idle bit synthesis herein
Exhibition DT (EDT, Extended DT) field.Understand, owing to EDT has four bits, therefore its value
Scope is 0～15.When the value of EDT field is 0, now in ACK frame, four idle bits are all set to 0,
Now represent that AP does not use multi-user's response message；When the value of EDT field is 1～15, represent that AP makes
Use multi-user's response message, AP send moment of multi-user's response message arrive before be STA can dormancy time
Between, STA's can dormancy time can be that the value of EDT field subtracts 1.Can also be by the value of EDT field
Be considered as 0 unit of time when 15, then the value of 1 to 14 mean that STA actual can dormancy time.
Owing in the span ratio one of EDT field, the span of DT field is big, therefore send at AP
In the case of moment of multi-user's response message is constant, the time granularity that EDT field represents is than DT field more
Thin, Phase Proportion one, the time point waken up after STA dormancy in example two can send multi-user closer to AP and ring
Answer the moment of message, thus STA power saving effect can be better.Optionally, the unit of time of EDT field
Can take system time-out time T 1/14th.
In conjunction with example two, Fig. 6 show between AP and STA the interaction sending request message with response message,
After AP receives the request message 1 that STA1 sends, determine that being deferred to the X moment disappears to the STA1 multiplex response of transmission
Breath, owing to request message 1 is first the request message that AP receives, therefore, is set to maximum by DT field
Value 15 (DT field is to represent when 0 that AP does not send multi-user's response message), now represents that AP is at 14
Multi-user's response message is sent after unit of time.Certain AP is not necessarily intended to will when receiving first request message
The maximum that the STA dormancy time of DT field instruction is positioned to allow for, can set as the case may be
Put.STA1 receive AP send ACK after, after 14 unit of time of dormancy stop dormancy, with etc. waiting
Receive multi-user's response message that AP sends.When AP receives the request message 2 that STA2 sends, now distance
The X moment of AP transmission multi-user's response message, therefore STA's can dormancy time be less than 10 unit of time
9 unit of time, then EDT field is set to 10 by AP.After STA2 receives the ACK that AP sends,
After 9 unit of time of dormancy stop dormancy, with etc. AP to be received send multi-user's response message.AP receives
To STA3 send request message 3 time, now distance AP transmission multi-user's response message the X moment less than 1
Individual unit of time, therefore STA's can dormancy time be 0 unit of time, and then AP is by the EDT of ACK frame
Field is set to 1.STA1 receive AP send ACK after, keep wake states with etc. AP to be received send out
The multi-user's response message sent.
AP uses competition mechanism to send multi-user's response message when the X moment arrives, and keeps out of the way owing to existing
Journey, AP might not rob immediately in the X moment and account for channel transmission multi-user's response message, and therefore AP is actual
The time point sending multi-user's response message may be later than the X moment.Each STA waits after stopping resting state
Receive multi-user's response message of AP transmission and this multi-user's response message is replied ACK.
The second implementation, the extension ACK frame carrying the first information and the second information is sent to by AP
STA, this extension ACK frame includes existing ACK frame and extended field, and extended field is for carrying the second letter
Breath.Wherein, the field carrying the first information in extension ACK frame is any one field following:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
The field of the carrying first information that i.e. extension ACK frame includes is in the existing ACK frame shown in Fig. 4
Any one field in four spare field, the field of the carrying first information is referred to as MRI bit.
Extension ACK frame can be understood as increasing a newer field on the basis of existing ACK frame (in Fig. 7
" time delay " field), this newer field carries the second information.
For the extension ACK frame in the second implementation, as it is shown in fig. 7, AP determines that sending multi-user rings
When answering message, MRI bit in frame control field is set to 1, " time delay " will added in ACK frame
Field carrying STA can dormancy time, i.e. AP send multi-user's response message moment arrive before time
Interval.Owing to " time delay " field is not limited by bit number in existing form, therefore can be with negated normal essence
Thin unit of time, such as microsecond.
In conjunction with the extension ACK frame shown in Fig. 7, as shown in Figure 8, request message and sound are sent between AP and STA
Answer in the interaction of message, after AP receives the request message 1 that STA1 sends, determine to be deferred to the X moment
Send multiplex response message to STA1 and (assume that being deferred to the X moment sends the maximum that multiplex response message is permission
Time delay 2340 microsecond), the MRI of ACK frame is set to 1 by AP, increases simultaneously and " prolong in ACK frame
The late time " field (can also just be DT field), and the value of " time delay " field is set to 2340 (singly
Position is microsecond), its meaning is that AP sends multi-user's response message after 2340 microseconds.STA1 receives ACK
Afterwards, can select to stop after dormancy 2340 microsecond dormancy, with etc. multi-user's response of sending of AP to be received
Message.After AP receives the request message 2 that STA2 sends, determine to send multi-user's response message to STA2,
The X moment of the multiplex response message of now distance AP transmission also has 1580 microseconds, and then AP is by the MRI of ACK frame
It is set to 1, and the value of " time delay " field is set to 1580.After STA2 receives ACK, can select not
After 1580 microseconds of sleeping stop dormancy, with etc. AP to be received send multi-user's response message.AP receives
After the request message 3 that STA3 sends, AP also determines STA3 is sent multi-user's response message, now distance
The X moment of the AP multiplex response message of transmission also has 55 microseconds, and therefore the MRI in ACK frame is set to 1 by AP,
And the value of " time delay " field is set to 55.After STA3 receives ACK, dormancy 55 microsecond can be selected
Stop dormancy afterwards, with etc. AP to be received send multi-user's response message.
AP uses competition mechanism to send multi-user's response message when the X moment arrives, and keeps out of the way owing to existing
Journey, AP might not rob immediately in the X moment and account for channel transmission multi-user's response message, and therefore AP is actual
The time point sending multi-user's response message may be later than the X moment.Each STA waits after stopping resting state
Receive multi-user's response message of AP transmission and this multi-user's response message is replied ACK.
The third implementation, the ACK frame carrying the first information and the second information is sent to STA by AP,
This ACK frame includes carrying the first information and the preset field of the second information.This ACK frame is based on encapsulation control
The frame format of frame processed, the preset field carrying the first information in ACK frame is frame sub-type field, this ACK
Frame includes the field carrying the second information.
Encapsulation control frame form defined in existing specification refers to, defined control frame is encapsulated in new control
In frame type processed, increase new field in order to the form of original control frame is the most constant simultaneously, and
Encapsulation control frame is used to also add new field while realizing original each control frame function.Encapsulation controls
Frame is a kind of control frame, but the inside can encapsulate defined various control frame.
For the third implementation, the present embodiment uses this technology to define another encapsulation control frame, will
ACK frame is encapsulated in encapsulation control frame, increases " time delay " field simultaneously, and gives new encapsulation control frame
Give new frame type.The frame subtype carrying first information of this encapsulation control frame, increases " time delay " word
The field of section carrying the second information.
Below each field in the encapsulation control frame form shown in Fig. 9 is illustrated:
Frame control field: the frame type in frame control field indicates this to be a control frame, frame subtype indicates
This is an encapsulation control frame, and this encapsulation control frame is different from the encapsulation control frame defined in existing specification.
Duration field: represent this frame duration when transmission.
Address 1 field: this is first address field in packed control frame, such as in ACK frame
Receive address.At least having an address field in one frame, concrete address field quantity is then and frame type
Relevant with frame subtype.
Load carrying frame control field: this is the frame control field of packed control frame, its most contents is with new
Frame in frame control field be consistent, only frame subtype is different.Frame subclass in load carrying frame control
Type may indicate that it is various control frames, such as ACK frame, and the frame subtype during frame controls then is fixed as instruction
This is encapsulation control frame.For frame subtype indicate this be encapsulation control frame and carrying be ACK frame time, just
Specify and this frame comprises " time delay " field.In embodiments of the present invention, the frame subtype during frame controls
Just specify the encapsulation control frame that this frame contains " time delay " field, be therefore no longer necessary to use frame to control
In spare field as MRI indicate.
Time delay field: this be the embodiment of the present invention add field, carry the second information.
Load carrying frame field: the control frame of encapsulation control frame carrying controls (to put except persistent period, address 1, frame
In load carrying frame control field), remainder beyond frame check.During specific to one ACK frame of carrying,
Load carrying frame part is blank in fact, does not i.e. have this partial content, because ACK frame is the shortest, except frame
Control (being placed on load carrying frame control part), persistent period (be retained in origin-location, but content update),
Receive outside address (address 1), frame check, just there is no other content.
Frame check field: the check part of encapsulation control frame.
Describe it will be seen that based on encapsulation control frame from the above-mentioned form to the encapsulation control frame shown in Fig. 9
The ACK frame of frame format adds a frame than the length of packed ACK frame and controls and field time delay.
It is also understood that the ACK frame of frame format based on encapsulation control frame is on ground on the basis of former control frame
Load carrying frame control field and field such as field time delay newly increased is inserted after the field of location 1, and by former control
The content of the frame control part of frame processed copies to load carrying frame control field, then by the frame in field in the control of former frame
The value of subtype is revised as encapsulating control frame type, and the content of persistent period and frame check then needs according to new
Frame recalculate.
By above-mentioned three kinds of implementations, what the AP that STA receives sent carries the first information and the second information
ACK frame after, according to the first information and the second information, know that AP sends the moment of multi-user's response message,
So that STA can select AP send multi-user's response message moment arrive before in a dormant state, and
Multi-user's response that the AP to be received that revives etc. when the moment that AP sends multi-user's response message arrives sends disappears
Breath, and then reach to save the purpose of STA electric energy；Or, STA can select to send multi-user's response at AP
The moment of message communicates with other equipment before arriving, and then improves the work efficiency of STA.
As shown in Figure 10, the embodiment of the present invention provides a kind of multi-user's response message using method, the method
Executive agent is STA, and the method includes:
S1001, site STA send request message to access point AP；
The expression that S1002, STA reception AP sends is properly received just should indeed of the request message of described STA
Answering instruction ACK frame, ACK frame carries the first information and the second information.The first information is for this STA
The response that instruction AP uses multi-user's response mode to send the request message for responding STA to STA disappears
Breath, the second information indicates AP and sends the temporal information of response message；
S1003, STA, when the time that temporal information is corresponding arrives, receive AP and send response message.
In the present embodiment, STA can send the time corresponding to temporal information of multi-user's response message at AP
Communicate with other websites before arrival, to improve the work efficiency of STA；Or, STA selects
AP send the time corresponding to temporal information of multi-user's response message arrive before in a dormant state, to reach
To the purpose saving electric energy.
In the present embodiment, STA receives the ACK frame carrying the first information and the second information of AP transmission can
There to be following three kinds of implementations:
The first implementation, what STA reception AP sent carries the first information and the ACK of the second information
Frame, this ACK frame includes carrying the first information and the preset field of the second information, and this preset field is existing
At least two in four spare field in some ACK frames, specifically includes: more segmentation indicating fields,
Retry indication field, frame protection indication field and order indication field.
The second implementation, what STA reception AP sent carries the first information and the extension of the second information
ACK frame, this extension ACK frame includes existing ACK frame and extended field, and extended field is for carrying the
Two information.Wherein, the field carrying the first information in extension ACK frame is any one field following:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
The third implementation, what STA reception AP sent carries the first information and the ACK of the second information
Frame, this ACK frame is frame format based on encapsulation control frame, carries the predetermined word of the first information in ACK frame
Section is frame sub-type field, and this ACK frame includes the field carrying the second information.
For above-mentioned the first to the third implementation, have a detailed description in the method that Fig. 3 is corresponding,
Here is omitted.
By embodiment one, for the request message of the request data package that at least two STA sequentially sends,
AP is after receiving request message, by the ACK frame instruction AP of the request message for replying STA
Multi-user's response mode is used to send the response message being used for responding the request message of STA to STA, and
AP sends the temporal information of multi-user's response message.From the ACK that AP sends, STA knows that AP sends many
After the temporal information of user's response message, STA can select to send the time of multi-user's response message at AP
Time corresponding to information arrive before in a dormant state, and send the time of multi-user's response message at AP
Time corresponding to information such as revives when arriving at multi-user's response message that AP to be received sends, and then reaches joint
Save the purpose of STA electric energy；Or, STA can select to send the time letter of multi-user's response message at AP
The time that breath is corresponding communicates with other equipment before arriving, and then improves the work 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 using method, the method
Executive agent is AP, and the method includes:
S1101, access point AP send broadcast frame, so that at least two site STA receives broadcast frame, extensively
Broadcast the descending multi-user message transmission time information carrying AP in frame；
S1102, AP receive the request message that at least two site STA sends in different time points respectively；
S1103, at least two STA each STA perform following steps:
AP is referred to STA transmission by the correct response instruction ACK frame of the request message for replying STA
Showing information, indicating information to be used for will be at descending multi-user message transmission time information pair to STA instruction AP
The time answered sends the response message for responding the request message that STA sends to STA；AP is descending many
When the time that user message transmission time information is corresponding arrives, send response message to STA.
In the present embodiment, the request message whether AP uses multi-user's response message to send STA is carried out back
Multiple, determine depending on practical situation.Such as, when the request message that AP receives STA transmission is more, permissible
The request message using multi-user's response message that STA is sent is selected to reply.Use alone for AP
The scene that message is replied one by one is asked in STA transmission by family response message, does not do concrete in the present embodiment
Limit.
In the present embodiment, instruction information is carried in the preset field of ACK frame by AP, then will carry
The ACK frame of instruction information is sent to STA, and this instruction information is used for indicating AP in descending multi-user message
The time that transmission time information is corresponding sends to STA and disappears for the response responding the request message that STA sends
Breath.
Optionally, the preset field in ACK frame includes any one in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
Preset field in i.e. ACK frame is in four spare field in the existing ACK frame shown in Fig. 4
Any one field, the preset field of carrying instruction information is referred to as MRI field.
The present embodiment uses a preset field in ACK frame carry instruction information, i.e. indicate AP
The mode using multi-user's response message replys response message to STA, and AP sends multi-user's response message
Time, i.e. the descending multi-user message of AP sends the time and carries in the broadcast frame that AP sends.Such as
Carrying instruction information in beacon (Beacon) frame of AP periodic broadcast or other broadcast frame, STA also may be used
From the descending multi-user message of AP, instruction information is known with cascade.
As shown in figure 12, AP is at the beacon frame (or other the specific broadcast frame after beacon frame) of periodic broadcast
In carry this beacon period what descending multi-user message in (intervals between two neighbor beacon frames) sent
Temporal information, temporal information and second including first descending multi-user message transmission in Figure 12 are descending
The temporal information that multi-user message sends, AP can send multiplex on descending multi-user message transmission time information
Family response message.
As a example by STA1, when STA1 uses competition mechanism after AP sends request message 1, and AP determines to use
Multi-user's response message, then be set to 1 by the MRI field in ACK frame.After STA1 receives this ACK frame,
In beacon frame according to AP broadcast, the descending multi-user message transmission time information that carries knows that AP may be
First descending multi-user message transmission time sends multi-user's response message to oneself, and therefore STA1 is permissible
Selecting dormancy before first descending multi-user message sends time arrival, STA1 is descending many at first
User message send the time arrive time stop dormancy, with etc. AP to be received send multi-user's response message, with
Reach to save the purpose of electric energy；Or, STA1 can first descending multi-user message send the time to
Communicate with other equipment before Laiing, to improve work efficiency.
AP would generally be given tacit consent to and send multi-user's response when first descending multi-user message sends time arrival
Message, if not receiving in the preset duration that STA1 is after first descending multi-user message transmission time
To multi-user's response message, dormancy can be selected, then second descending multi-user message send the time to
Come time stop dormancy, with etc. AP to be received send multi-user's response message.Or, STA1 is at first
It is not received by multi-user's response message in preset duration after descending multi-user message transmission time point,
STA1 sends, by monitoring first descending multi-user message, the broadcast that time AP sends, and knows adjacent
Next descending multi-user message send the time, and then next descending multi-user message send the time to
Select dormancy before, and stop dormancy when next descending multi-user message transmission time arrives, with etc.
Multi-user's response message that AP to be received sends.The dormancy principle of STA2 is identical with STA1, the most superfluous
State.Generally, STA selects the broadcast frame received AP before sending request message to AP to send, but
It is not limited to this.
AP uses competition mechanism to send multi-user's response message when descending multi-user message sends time arrival,
Owing to there is backoff procedure, AP might not rob immediately at descending multi-user message transmission time point and account for letter
Road sends multi-user's response message, and therefore AP is actually sent out time of descending multi-user message and may be later than broadcast
Descending multi-user message transmission time in frame.Now need STA at descending multi-user message transmission time point etc.
Treat a period of time.
As shown in figure 13, the embodiment of the present invention provides a kind of multi-user's response message using method, the method
Executive agent is STA, and the method includes:
S1301, site STA receive the broadcast frame that access point AP sends, and carry under AP in broadcast frame
Row multi-user message transmission time information；
S1302, STA send request message to AP；
S1303, STA receive the correct response instruction ACK frame of the instruction information of carrying that AP sends, ACK
Frame is for replying the request message of STA, and instruction information is used for indicating AP when descending multi-user message sends
Between time corresponding to information use multi-user's response mode to send the response for response request message to STA
Message；
S1304, STA, when the time that descending multi-user message transmission time information is corresponding arrives, receive AP
The response message sent.
In the present embodiment, STA can arrive in the time that the descending multi-user message transmission time information of AP is corresponding
Communicate with other websites before soothing the liver, to improve the work efficiency of STA；Or, STA selects AP's
Before the time arrival that descending multi-user message transmission time information is corresponding in a dormant state, to reach to save
The purpose of electric energy.
In the present embodiment, carrying instruction information in the preset field of ACK frame, this instruction information is used for indicating
AP is used for responding STA in the time that descending multi-user message transmission time information is corresponding to STA transmission and sends
The response message of request message.Optionally, any one during this preset field includes following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
For the method in Figure 13, having a detailed description in the method that Figure 11 is corresponding, here is omitted.
By embodiment two, AP is by sending broadcast frame so that STA knows the descending multi-user message of AP
Transmission time information.For the request message of the request data package that at least two STA sequentially sends, AP
After receiving request message, being indicated by the ACK frame of the request message for replying STA, AP is descending
The time that multi-user message transmission time information is corresponding sends for responding the request message that STA sends to STA
Response message.And then STA can select the descending multi-user message transmission time information at AP corresponding time
Between arrive before in a dormant state, and in time corresponding to the descending multi-user message transmission time information of AP
Multi-user's response message that the AP to be received such as revive during arrival sends, and then reach to save the mesh of STA electric energy
's；Or, STA can select the time the descending multi-user message transmission time information of AP is corresponding to arrive
Communicate with other equipment before, and then improve the work efficiency of STA.
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 to use device, including:
Transceiver module 141, for asking that reception at least two site STA respectively sends in different time points
Seek message；
Processing module 142, for for STA each at least two STA, determines the first information and second
Information, the first information is used for indicating transceiver module 141 to use multi-user's response mode to send for ringing to STA
Answering the response message of the request message of STA, the second information is used for indicating transceiver module 141 to send response message
Temporal information；
Transceiver module 141, is additionally operable to for STA each at least two STA, replys STA by being used for
The correct response instruction ACK frame of request message send the first information and the second information to STA；In the time
When time corresponding to information arrives, send response message to STA.
Optionally, transceiver module 141 by the ACK frame of request message for replying STA to STA
When sending the first information and the second information, specifically for:
The first information and the second information that processing module 142 are determined are carried in the preset field of ACK frame；
The ACK frame carrying the first information and the second information is sent to STA.
Optionally, the preset field in ACK frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
Optionally, ACK frame is frame format based on encapsulation control frame, carries the first information in ACK frame
Preset field 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 to use device, including:
Transceiver module 151, for sending request message to access point AP；Receive AP transmission carries first
The correct response instruction ACK frame of information and the second information, ACK frame is used for replying transceiver module 151 and sends
Request message, the first information is used for indicating AP to use multi-user's response mode to send to transceiver module 151
For the response message of response request message, the second information sends the time letter of response message for indicating AP
Breath；
Processing module 152, corresponding for controlling the temporal information that transceiver module 151 indicates in the second information
When time arrives, receive AP and send response message；
Transceiver module 151, is additionally operable to, when the time that the temporal information of the second information instruction is corresponding arrives, connect
Receive AP and send response message.
Optionally, processing module 152 is additionally operable to:
Before the time that the temporal information of the second information is corresponding arrives, the site STA controlling its place is in
Resting state.
Optionally, the preset field of ACK frame carries the first information and the second information.
Optionally, at least two during the preset field of ACK frame includes following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
Optionally, ACK frame is frame format based on encapsulation control frame, carries the first information in ACK frame
Preset field is frame sub-type field.
By embodiment three, it is possible to achieve the request data package sequentially sent at least two STA please
Seeking message, AP is after receiving request message, by the ACK frame of the request message for replying STA
The response that instruction AP uses multi-user's response mode to send the request message for responding STA to STA disappears
Breath, and the temporal information of AP transmission multi-user's response message.The ACK that STA sends from AP is known
After AP sends the temporal information of multi-user's response message, STA can select to send multi-user's response at AP
Time corresponding to the temporal information of message arrive before in a dormant state, and send multi-user's response at AP
Time corresponding to the temporal information of message such as revives when arriving at multi-user's response message that AP to be received sends,
And then reach to save the purpose of STA electric energy；Or, STA can select to send multi-user's response at AP and disappear
The time corresponding to temporal information of breath communicates with other equipment before arriving, and then improves the work of STA
Efficiency.
Corresponding with embodiment two, embodiment four
As shown in figure 16, the embodiment of the present invention provides a kind of multi-user's response message to use device, including:
Transceiver module 161, is used for sending broadcast frame, so that at least two site STA receives broadcast frame, extensively
Broadcast the descending multi-user message transmission time information carrying transceiver module 161 in frame；Receive at least two respectively
The request message that site STA sends in different time points；
Processing module 162, for determining instruction information for STA each at least two STA, instruction
Information is for indicating transceiver module 161 in time corresponding to descending multi-user message transmission time information to STA
Send the response message for responding the request message that STA sends；
Transceiver module 161.It is additionally operable to for STA each at least two STA, replys STA by being used for
Request message correct response instruction ACK frame to STA send instruction information；For at least two STA
In each STA, when time corresponding to descending multi-user message transmission time information arrives, send out to STA
Send response message.
Optionally, transceiver module 161 sends to STA at the ACK frame of the request message for replying STA
During instruction information, specifically for:
Instruction information processing module 162 determined is carried in the preset field of ACK frame；
The ACK frame carrying instruction information is sent to STA.
Optionally, the preset field in ACK frame includes any one in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
As shown in figure 17, the embodiment of the present invention provides a kind of multi-user's response message to use device, including:
Transceiver module 171, for receiving the broadcast frame that access point AP sends, carries under AP in broadcast frame
Row multi-user message transmission time information；Request message is sent to AP；Receive AP transmission carries instruction
The correct response instruction ACK frame of information, ACK frame is for replying the request message of STA, and instruction information is used
In instruction AP time corresponding to descending multi-user message transmission time information use multi-user's response mode to
STA sends the response message for response request message；
Processing module 172, is used for controlling transceiver module 171 at descending multi-user message transmission time information pair
When the time answered arrives, receive the response message that AP sends；
Transceiver module 171, is additionally operable to when the time that descending multi-user message transmission time information is corresponding arrives,
Receive the response message that AP sends.
Optionally, processing module 172 is additionally operable to:
Controlled the STA at its place before the time that descending multi-user message transmission time information is corresponding arrives
In a dormant state.
Optionally, the preset field of ACK frame carries instruction information, the preset field bag in ACK frame
Include in following field any one:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
By embodiment four, it is possible to achieve AP is by sending broadcast frame so that STA knows that AP's is descending
Multi-user message transmission time information.Request for the request data package that at least two STA sequentially sends
Message, AP, after receiving request message, is referred to by the ACK frame of the request message for replying STA
Showing, AP was used for responding STA to STA transmission in the time that descending multi-user message transmission time information is corresponding
The response message of the request message sent.And then STA can select the descending multi-user message at AP to send
Time corresponding to temporal information arrive before in a dormant state, and send in the descending multi-user message of AP
Time corresponding to temporal information such as revives when arriving at multi-user's response message that AP to be received sends, Jin Erda
To the purpose saving STA electric energy；Or, STA can select when the descending multi-user message of AP sends
Between time corresponding to information arrive before communicate with other equipment, and then improve the work efficiency of STA.
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 to use device, including:
Transceiver 181, for receiving the request that at least two site STA sends in different time points respectively
Message；
Processor 182, for for STA each at least two STA, determines the first information and the second letter
Breath, the first information is used for indicating transceiver 181 to use multi-user's response mode to send for responding to STA
The response message of the request message of STA, the second information for indicate transceiver 181 send response message time
Between information；
Transceiver 181, is additionally operable to for STA each at least two STA, replys STA by being used for
The correct response instruction ACK frame of request message send the first information and the second information to STA；In the time
When time corresponding to information arrives, send response message to STA.
Optionally, transceiver 181 is being sent out to STA by the ACK frame of the request message for replying STA
When sending the first information and the second information, specifically for:
The first information and the second information that are determined by processor 182 are carried in the preset field of ACK frame；
The ACK frame carrying the first information and the second information is sent to STA.
Optionally, the preset field in ACK frame includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
Optionally, ACK frame is frame format based on encapsulation control frame, carries the first information in ACK frame
Preset field is frame sub-type field.
As shown in figure 19, the embodiment of the present invention provides a kind of multi-user's response message to use device, including:
Transceiver 191, for sending request message to access point AP；Receive AP transmission carries the first letter
Ceasing and the correct response instruction ACK frame of the second information, ACK frame is for replying asking of transceiver 191 transmission
Message, the first information is asked to be used for indicating AP to use multi-user's response mode to send for ringing to transceiver 191
Should ask the response message of message, the second information sends the temporal information of response message for indicating AP；
Processor 192, for controlling the time that temporal information that transceiver 191 indicates in the second information is corresponding
During arrival, receive AP and send response message；
Transceiver 191, is additionally operable to, when the time that the temporal information of the second information instruction is corresponding arrives, receive
AP sends response message.
Optionally, processor 192 is additionally operable to:
Before the time that the temporal information of the second information is corresponding arrives, the site STA controlling its place is in
Resting state.
Optionally, the preset field of ACK frame carries the first information and the second information.
Optionally, at least two during the preset field of ACK frame includes following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
Optionally, ACK frame is frame format based on encapsulation control frame, carries the first information in ACK frame
Preset field is frame sub-type field.
By embodiment five, it is possible to achieve the request data package sequentially sent at least two STA please
Seeking message, AP is after receiving request message, by the ACK frame of the request message for replying STA
The response that instruction AP uses multi-user's response mode to send the request message for responding STA to STA disappears
Breath, and the temporal information of AP transmission multi-user's response message.The ACK that STA sends from AP is known
After AP sends the temporal information of multi-user's response message, STA can select to send multi-user's response at AP
Time corresponding to the temporal information of message arrive before in a dormant state, and send multi-user's response at AP
Time corresponding to the temporal information of message such as revives when arriving at multi-user's response message that AP to be received sends,
And then reach to save the purpose of STA electric energy；Or, STA can select to send multi-user's response at AP and disappear
The time corresponding to temporal information of breath communicates with other equipment before arriving, and then improves the work of STA
Efficiency.
Corresponding with embodiment two, embodiment six
As shown in figure 20, the embodiment of the present invention provides a kind of AP, including:
Transceiver 201, is used for sending broadcast frame, so that at least two site STA receives broadcast frame, broadcast
Frame carries the descending multi-user message transmission time information of transceiver 201；Receive at least two website respectively
The request message that STA sends in different time points；
Processor 202, for determining instruction information, instruction letter for STA each at least two STA
Breath sends to STA in the time that descending multi-user message transmission time information is corresponding for indicating transceiver 201
For responding the response message of the request message that STA sends；
Transceiver 201, is additionally operable to for STA each at least two STA, replys STA by being used for
Request message correct response instruction ACK frame to STA send instruction information；For at least two STA
In each STA, when time corresponding to descending multi-user message transmission time information arrives, send out to STA
Send response message.
Optionally, transceiver 201 refers to STA transmission at the ACK frame of the request message for replying STA
When showing information, specifically for:
The instruction information determined by processor 202 is carried in the preset field of ACK frame；
The ACK frame carrying instruction information is sent to STA.
Optionally, the preset field in ACK frame includes any one in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
As shown in figure 21, the embodiment of the present invention provides a kind of STA, including:
Transceiver 211, for receiving the broadcast frame that access point AP sends, carries the descending of AP in broadcast frame
Multi-user message transmission time information；Request message is sent to AP；Receive AP transmission carries instruction letter
The correct response instruction ACK frame of breath, ACK frame is for replying the request message of STA, and instruction information is used for
Instruction AP time corresponding to descending multi-user message transmission time information use multi-user's response mode to
STA sends the response message for response request message；
Processor 212 is corresponding at descending multi-user message transmission time information for controlling transceiver 211
When time arrives, receive the response message that AP sends；
Transceiver 211, is additionally operable to when the time that descending multi-user message transmission time information is corresponding arrives,
Receive the response message that AP sends.
Optionally, processor 212 is additionally operable to:
Controlled the STA at its place before the time that descending multi-user message transmission time information is corresponding arrives
In a dormant state.
Optionally, the preset field of ACK frame carries instruction information, the preset field bag in ACK frame
Include in following field any one:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
By embodiment six, it is possible to achieve AP is by sending broadcast frame so that STA knows that AP's is descending many
User message transmission time information.The request of the request data package sequentially sent at least two STA disappears
Breath, AP, after receiving request message, is indicated by the ACK frame of the request message for replying STA,
AP is used for responding STA in the time that descending multi-user message transmission time information is corresponding to STA transmission and sends
The response message of request message.And then STA can select to send time letter in the descending multi-user message of AP
The time that breath is corresponding arrive before in a dormant state, and at the descending multi-user message transmission time information of AP
The corresponding time such as revives when arriving at multi-user's response message that AP to be received sends, and then reaches to save STA
The purpose of electric energy；Or, STA can select the descending multi-user message transmission time information at AP corresponding
Time communicates with other equipment before arriving, and then improves the work efficiency of STA.
The same or similar part of each method embodiment of the present invention can be mutually with reference to understanding, each device is real
Executing same or similar part in example can be mutually with reference to understanding, each method embodiment is implemented with each device
Example also can be mutually with reference to understanding.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more
Include computer usable program code computer-usable storage medium (include but not limited to disk memory,
CD-ROM, optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not take off
Spirit and scope from the embodiment of the present invention.So, if these amendments of the embodiment of the present invention and modification belong to
Within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention be also intended to include these change and
Including modification.
Claims (32)
1. the method sending response message, it is characterised in that the method includes:
The request message that access point AP receiving station STA sends；
Described AP, after receiving the request message that described STA sends, sends for table to described STA
Showing the correct response instruction ACK frame of the request message having correctly received described STA, described ACK frame is taken
Having carried the first information and the second information, the described first information is for indicating described AP to postpone to institute to this STA
Stating STA and send the response message of the request message for responding described STA, described second information indicates
Described AP sends the temporal information of described response message, for sending at described AP to described STA instruction
Before the transmission time points of described response message arrives, the time span that described STA needs to wait for；
When the transmission time points of described response message arrives, send out if described AP receives at least two STA
The request message sent, the most described AP uses the mode of multi-user message to send out to described at least two STA simultaneously
Send response message；If described AP only receives the request message that a STA sends, the most described AP uses
The mode of single user message sends described response message to described STA, or, described AP is to described STA
Sending multi-user message, described multi-user message includes described response message.
2. the method for claim 1, it is characterised in that described AP by described ACK frame to
Described STA sends the described first information and described second information, including:
The described first information and described second information are carried on the preset field of described ACK frame by described AP
In；
The described ACK frame carrying the described first information and described second information is sent to institute by described AP
State STA.
3. method as claimed in claim 2, it is characterised in that the described predetermined word in described ACK frame
Section includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
4. method as claimed in claim 2, it is characterised in that described ACK frame is based on encapsulation control
The frame format of frame, the preset field carrying the described first information in described ACK frame is frame sub-type field.
5. the method as described in claim 1-4 is arbitrary, it is characterised in that described temporal information is anticipated
The transmission time points of described response message, or, send described sound for described access point according to the delay preset
Length time delay answering message determines, or, for described access point according to receiving described request message
The time difference of the transmission time points of time point and anticipated described response message determines, or, connect for described
Access point according to the transmission time points sending time point and anticipated described response message of described ACK frame time
Between difference determine.
6. the method sending response message, it is characterised in that the method includes:
Site STA sends request message to access point AP；
Described STA receives the request message having correctly received described STA for expression that described AP sends
Correct response instruction ACK frame, described ACK frame carries the first information and the second information, described first
Information is used for indicating described AP to postpone to described STA to this STA and sends for responding asking of described STA
Ask the response message of message, described second information to indicate described AP and send the time letter of described response message
Breath, for indicating before described AP sends the transmission time points arrival of described response message to described STA,
The time span that described STA needs to wait for；
Described STA, when the time that described temporal information is corresponding arrives, receives described AP with single user message
Or the described response message that the mode of multi-user message sends.
7. method as claimed in claim 6, it is characterised in that the method also includes:
Described STA was in before the time that the described temporal information of described second information instruction is corresponding arrives
Resting state.
Method the most as claimed in claims 6 or 7, it is characterised in that the preset field of described ACK frame
In carry the described first information and described second information.
9. method as claimed in claim 8, it is characterised in that the preset field of described ACK frame includes
At least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
10. method as claimed in claim 8, it is characterised in that described ACK frame is based on encapsulation control
The frame format of frame processed, the preset field carrying the described first information in described ACK frame is frame sub-type field.
11. 1 kinds of methods sending response message, it is characterised in that the method includes:
Access point AP sends broadcast frame, so that site STA receives described broadcast frame, takes in described broadcast frame
Descending multi-user message transmission time information with described AP；
Described AP receives the request message that STA sends after receiving described broadcast frame；
Described AP passes through to have correctly received institute for expression after receiving the request message that a STA sends
The correct response instruction ACK frame of the request message stating STA sends instruction information, described finger to described STA
Show that information is for indicating described AP corresponding at described descending multi-user message transmission time information to this STA
Time sends the response message for responding the request message that described STA sends to described STA；
When the time that described descending multi-user message transmission time information is corresponding arrives, if described AP receives
To at least two STA send request message, the most described AP use multi-user message mode to described extremely
Few two STA send the response message that each request message is corresponding simultaneously；If described AP only receives one
The request message that STA sends, the most described AP uses the mode of single user message to send described to described STA
Response message, or, described AP sends multi-user message to described STA, and described multi-user message includes
Described response message.
12. methods as claimed in claim 11, it is characterised in that described AP passes through described ACK frame
Instruction information is sent to described STA, including:
Described instruction information is carried in the preset field of described ACK frame by described AP；
The described ACK frame carrying described instruction information is sent to described STA by described AP.
13. methods as claimed in claim 12, it is characterised in that the preset field in described ACK frame
Including any one in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
14. 1 kinds of methods sending response message, it is characterised in that the method includes:
Site STA receives the broadcast frame that access point AP sends, and carries under described AP in described broadcast frame
Row multi-user message transmission time information；
Described STA sends request message to described AP after receiving described broadcast frame；
Described STA receives the expression that is used for of described AP transmission and has correctly received just should indeed of described request message
Answering instruction ACK frame, described ACK frame carries instruction information, and described instruction information is for this STA
Described AP is indicated to send to described STA in the time that described descending multi-user message transmission time information is corresponding
For responding the response message of described request message；
Described STA, when the time that described descending multi-user message transmission time information is corresponding arrives, receives institute
State the described response message that AP sends in the way of single user message or multi-user message.
15. methods as claimed in claim 14, it is characterised in that the method also includes:
Described STA was in before the time that described descending multi-user message transmission time information is corresponding arrives
Resting state.
16. methods as described in claims 14 or 15, it is characterised in that presetting of described ACK frame
Carrying described instruction information in field, the preset field in described ACK frame includes appointing in following field
Meaning one:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
17. 1 kinds of access point AP, it is characterised in that this AP includes:
Transceiver, the request message sent for receiving station STA；
It is additionally operable to after receiving the request message that described STA sends, sends to described STA and be used for representing
Having correctly received the correct response instruction ACK frame of the request message of described STA, described ACK frame carries
The first information and the second information, the described first information is for indicating described AP to postpone to described to this STA
STA sends the response message of the request message for responding described STA, and described second information indicates institute
State AP and send the temporal information of described response message, for sending institute to described STA instruction at described AP
Before stating the transmission time points arrival of response message, the time span that described STA needs to wait for；
Processor, for when the transmission time points of described response message arrives, if described transceiver arrives
The request message that at least two STA sends, then control described transceiver and use the mode of multi-user message to institute
State at least two STA and send response message simultaneously；Or, for the transmission time points at described response message
During arrival, if described transceiver only receives the request message that a STA sends, then control described transceiver
Use single user message mode to described STA send described response message, or, control described transceiver to
Described STA sends multi-user message, and described multi-user message includes described response message..
18. access points as claimed in claim 17, it is characterised in that described transceiver is by described
ACK frame sends the described first information and during described second information to described STA, specifically for:
The described first information and described second information are carried in the preset field of described ACK frame；
The described ACK frame carrying the described first information and described second information is sent to described STA.
19. access points as claimed in claim 18, it is characterised in that described pre-in described ACK frame
If field includes at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
20. access points as claimed in claim 18, it is characterised in that described ACK frame is based on encapsulation
The frame format of control frame, the preset field carrying the described first information in described ACK frame is frame subclass type-word
Section.
21. access points as described in claim 17-20 is arbitrary, it is characterised in that described temporal information is
The transmission time points of anticipated described response message, or, send institute for described processor according to the delay preset
Length time delay stating response message determines, or, disappear according to receiving described request for described processor
The time difference of the time point of breath and the transmission time points of anticipated described response message determines, or, for institute
State the processor transmission time points sending time point and anticipated described response message according to described ACK frame
Time difference determine.
22. 1 kinds of site STA, it is characterised in that this STA includes:
Transceiver, for sending request message to access point AP；Receive described AP send for representing
Having correctly received the correct response instruction ACK frame of the request message of described STA, described ACK frame carries
The first information and the second information, the described first information is for indicating described AP to postpone to described to this STA
STA sends the response message for responding described request message, and described second information indicates described AP and sends out
Send the temporal information of described response message, disappear for sending described response to described STA instruction at described AP
Before the transmission time points of breath arrives, the time span that described STA needs to wait for；
Processor is corresponding in the described temporal information of described second information instruction for controlling described transceiver
When time arrives, receive the described response that described AP sends in the way of single user message or multi-user message
Message.
23. websites as claimed in claim 22, it is characterised in that described processor is additionally operable to:
Before the time that the described temporal information of described second information instruction is corresponding arrives, control described STA
In a dormant state.
24. websites as described in claim 22 or 23, it is characterised in that presetting of described ACK frame
Field carries the described first information and described second information.
25. websites as claimed in claim 24, it is characterised in that the preset field bag of described ACK frame
Include at least two in following field:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
26. websites as claimed in claim 24, it is characterised in that described ACK frame is based on encapsulation control
The frame format of frame processed, the preset field carrying the described first information in described ACK frame is frame sub-type field.
27. 1 kinds of access point AP, it is characterised in that this AP includes:
Transceiver, is used for sending broadcast frame, so that site STA receives described broadcast frame, in described broadcast frame
Carry the descending multi-user message transmission time information of described AP；Receive STA and receive described broadcast frame
The request message of rear transmission；By correctly connecing for representing after receiving the request message that STA sends
The correct response instruction ACK frame of the request message receiving described STA sends instruction information to described STA,
Described instruction information is for indicating described AP at described descending multi-user message transmission time information to this STA
The corresponding time sends the response message for responding the request message that described STA sends to described STA；
Processor, when the time corresponding at described descending multi-user message transmission time information arrives, if
The request message that described transceiver sends at least two STA, then control described transceiver and use multiplex
The mode of family message sends, to described at least two STA, the response message that each request message is corresponding simultaneously；Or
Person, if only receiving, for described transceiver, the request message that a STA sends, then controls described transceiver
Use single user message mode to described STA send described response message, or, control described transceiver to
Described STA sends multi-user message, and described multi-user message includes described response message.
28. access points as claimed in claim 27, it is characterised in that described transceiver passes through being used for
Described ACK frame to described STA send instruction information time, specifically for:
The described instruction information determined by described processor is carried in the preset field of described ACK frame；
The described ACK frame carrying described instruction information is sent to described STA.
29. access points as claimed in claim 28, it is characterised in that the predetermined word in described ACK frame
Section include in following field any one:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
30. 1 kinds of site STA, it is characterised in that this STA includes:
Transceiver, for receiving the broadcast frame that access point AP sends, carries described AP in described broadcast frame
Descending multi-user message transmission time information；Request is sent to described AP after receiving described broadcast frame
Message；Receive the correct response instruction having correctly received described request message for expression that described AP sends
ACK frame, described ACK frame carries instruction information, and described instruction information is for described to this STA instruction
AP was used for responding to described STA transmission in the time that described descending multi-user message transmission time information is corresponding
The response message of described request message；
Processor is corresponding at described descending multi-user message transmission time information for controlling described transceiver
When time arrives, receive the described response that described AP sends in the way of single user message or multi-user message
Message.
31. websites as claimed in claim 30, it is characterised in that described processor is additionally operable to:
Controlled described STA before the time that described descending multi-user message transmission time information is corresponding arrives
In a dormant state.
32. websites as described in claim 30 or 31, it is characterised in that presetting of described ACK frame
Carrying described instruction information in field, the preset field in described ACK frame includes appointing in following field
Meaning one:
More segmentation indicating fields, retry indication field, frame protection indication field and order indication field.
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| PCT/CN2016/080585 WO2016173518A1 (en) | 2015-04-29 | 2016-04-29 | Method for sending response message, access point, and station |
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| CN201510213797 | 2015-04-29 | ||
| CN2015102137978 | 2015-04-29 |
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| CN106102183B (en) | 2019-09-20 |
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