CN102740354B

CN102740354B - Method and device for informing and obtaining indication message of data to be received

Info

Publication number: CN102740354B
Application number: CN201110095521.6A
Authority: CN
Inventors: 方平; 丁志明; 树贵明
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2011-04-15
Filing date: 2011-04-15
Publication date: 2015-04-15
Anticipated expiration: 2031-04-15
Also published as: CN102740354A

Abstract

The invention discloses a method and device for sending and obtaining a message to be transmitted of a terminal device, and belongs to the field of wireless communication. The method for sending the message to be transmitted of the terminal device comprises: grouping the terminal devices stations (STA); sending grouped traffic indication messages of each devices, the traffic indication messages including the indication message of to-be-received data of the terminal device in the grouped devices, and a grouping message. The realization of the technical scheme enables a length of the traffic indication messages controllable, prevents the length of the traffic indication messages from being too long, and improves reliability of information transmission. In addition, through adding the grouped number of the STA, a large amount of to-be-transmitted information of the STA can be transmitted.

Description

Notify, obtain method and the device of data indication information to be received

Technical field

The present invention relates to wireless communication field, particularly a kind of notice, the method obtaining data indication information to be received and device.

Background technology

WiFi (Wireless Fidelity, Wireless Fidelity) technology is as a kind of short-distance wireless communication technology, and, transmission rate advantages of higher easy to use based on it, builds in WLAN (wireless local area network) and be obtained in wide area network access and apply widely.At present, the AP (Access Point, access point) of WiFi is all provided with in many public arenas such as Airport lounges, coffee-house.

After STA (Station supports the terminal equipment of 802.11 agreements) accesses WiFi wireless network, first associate with AP, AP is then for STA distributes AID (Association ID, association identification); Afterwards, AP periodically contains the Beacon frame of TIM (Traffic Indication Message receives data-indication message) to the STA broadcast packet of association, this TIM carries the data indication information to be received of all STA associated with AP; STA then obtains the data indication information to be received of self from the TIM received, and determines self whether have data to need to receive according to this data indication information to be received.

Wherein, TIM is made up of message header and STA data indication information two large divisions to be received.Message header comprises the information such as type of message and message-length; STA data indication information to be received is then specifically indicated by the Bit (bit) in the Bitmap (bitmap) of 1 to 251 byte lengths, and when Bit value is 1, then the STA that this Bit is corresponding has data to need to receive; When Bit value is 0, then the STA that this Bit is corresponding is countless to be received according to needs.

Can be known by above-mentioned introduction, when the STA associated with AP gets more and more, TIM just needs the data indication information to be received carrying increasing STA, this will cause the length of TIM more and more longer, and thus cause TIM transmit needed for time significantly increase, the appearance of the problem such as the possibility rising of bust this, especially, under the scene of low speed transmissions, this problem can be more serious; In addition, can be known again by above-mentioned introduction, when the length of the Bitmap in TIM reaches 251 bytes, the data indication information to be received of the STA that TIM can carry will reach maximum, namely TIM can carry at most the data indication information to be received of 2007 STA associated with AP, but, in intelligent instrument and sensing network, because the amount of communication data of STA is considerably less, so, then wish during system that AP can manage more STA, accordingly, data indication information to be received may be longer, and this also will cause the problems referred to above more serious.

Summary of the invention

In order to solve the problems of the technologies described above, embodiments provide a kind of notice, obtain method and the device of data indication information to be received, described technical scheme is as follows:

Notify a method for data indication information to be received, described method comprises:

Terminal equipment is divided into groups;

Send the reception data-indication message of each device packets successively, each reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets corresponding to this reception data-indication message, whether described data indication information to be received indicates terminal equipment in device packets corresponding to this reception data-indication message to have data to be received, and the reception data-indication message of described each device packets also comprises interval information and gap count information;

Send one or more auxiliary Indication message, described auxiliary Indication message comprises described interval information, gap count information and grouping information;

The described auxiliary Indication message number sent between described interval information adjacent two device packets of instruction or the reception data-indication message of dividing into groups to next round transmitting apparatus, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

Notify a device for data indication information to be received, described device comprises: grouping module and sending module;

Described grouping module, for dividing into groups terminal equipment;

Described sending module, for sending the reception data-indication message of each device packets successively, each reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets corresponding to this reception data-indication message, whether described data indication information to be received indicates terminal equipment in device packets corresponding to this reception data-indication message to have data to be received, and the reception data-indication message of described each device packets also comprises interval information and gap count information;

Described sending module, for sending one or more auxiliary Indication message, described auxiliary Indication message comprises described interval information, gap count information and grouping information;

Terminal equipment obtains a method for data indication information to be received, and described method comprises:

Receive the reception data-indication message of a device packets, described reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in described device packets, and in described data indication information indicating equipment grouping to be received, whether terminal equipment has data to be received;

Judge that whether described reception data-indication message is the reception data-indication message of the device packets at this terminal equipment place according to described grouping information,

If so, then DRP data reception process is performed according to described data indication information to be received;

If not, then the stand-by period needed for reception data-indication message of the device packets receiving this terminal equipment place is calculated according to described grouping information, and when the described stand-by period arrives, the reception data-indication message of receiving equipment grouping again.

Obtain a device for data indication information to be received, described device comprises: receiver module, judge module, the first Executive Module and the second Executive Module;

Described receiver module, for receiving the reception data-indication message of a device packets, described reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets, and in described data indication information indicating equipment grouping to be received, whether terminal equipment has data to be received;

Described judge module, for judging that according to described grouping information whether described reception data-indication message is the reception data-indication message of the device packets at this terminal equipment place;

Described first Executive Module, for when the judged result of described judge module is for being, performs DRP data reception process according to described data indication information to be received;

Described second Executive Module, for when the judged result of described judge module is not for being, the stand-by period needed for reception data-indication message of the grouping receiving this terminal equipment place is calculated according to described grouping information, and when the described stand-by period arrives, the reception data-indication message of receiving equipment grouping again.

Receive the message that access point AP sends, described message comprises grouping information, gap count information and interval information;

Judge that received message is the reception data-indication message of device packets or auxiliary Indication message according to described gap count information,

If described auxiliary Indication message, calculate the stand-by period needed for reception data-indication message of the device packets receiving this terminal equipment place according to described grouping information, interval information and gap count information;

If described reception data-indication message, judge that whether described reception data-indication message is the reception data-indication message of the device packets at this terminal equipment place according to described grouping information,

If the reception data-indication message of the device packets at this terminal equipment place, perform DRP data reception process according to the data indication information to be received in described reception data-indication message;

If not the reception data-indication message of the device packets at this terminal equipment place, the stand-by period needed for reception data-indication message of the device packets receiving this terminal equipment place is calculated according to described grouping information, interval information and gap count information, and when the described stand-by period arrives, the reception data-indication message of receiving equipment grouping again.

Obtain a device for data indication information to be received, described device comprises: receiver module, the first judge module, the first Executive Module, the second judge module, the second Executive Module and the 3rd Executive Module;

Described receiver module, for receipt message, described message comprises grouping information, gap count information and interval information;

Described first judge module, for judging that the message that described receiver module receives is the reception data-indication message of device packets or auxiliary Indication message;

Described first Executive Module, for when the judged result of described first judge module is described auxiliary Indication message, calculate the stand-by period needed for the reception data-indication message receiving this group equipment according to the grouping information in described auxiliary Indication message, interval information and gap count information;

Described second judge module, when judged result for described first judge module is again described reception data-indication message, judge that whether described reception data-indication message is the reception data-indication message of the device packets at this terminal equipment place according to described grouping information;

Described second Executive Module, for when the judged result of described second judge module is the reception data-indication message of the device packets at this terminal equipment place, perform DRP data reception process according to the data indication information to be received in described reception data-indication message;

Described 3rd Executive Module, for when the judged result of described second judge module is the reception data-indication message of the device packets not being this terminal equipment place, the stand-by period needed for reception data-indication message of the device packets receiving this terminal equipment place is calculated according to described grouping information, interval information and gap count information, and when the described stand-by period arrives, the reception data-indication message of receiving equipment grouping again.

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: by the realization of technique scheme, the reception data-indication message message-length that each STA is divided into groups is controlled, improve the reliability of information transmission, by increasing the quantity of STA grouping, the information to be transmitted of a large amount of STA namely can be transmitted; And make equipment after the reception data-indication message of first time receiving equipment grouping, calculate the stand-by period, and the reception data-indication message of receiving equipment grouping after the stand-by period arrives, the reception data-indication message of self place device packets can be obtained, avoid the trouble of each all reception data-indication message of receiving equipment, save energy consumption.

Accompanying drawing explanation

Fig. 1 is a kind of method flow diagram notifying data indication information to be received that the embodiment of the present invention 1 provides;

Fig. 2 is a kind of method flow diagram obtaining data indication information to be received that the embodiment of the present invention 2 provides;

Fig. 3 is a kind of method flow diagram notifying data indication information to be received that the embodiment of the present invention 3 provides;

Fig. 4 is a kind of AID form schematic diagram that the embodiment of the present invention 3 provides;

Fig. 5 is the form schematic diagram of a kind of TIM that the embodiment of the present invention 3 provides;

A kind of form schematic diagram receiving data-indication message that Fig. 6 embodiment of the present invention 3 provides;

Fig. 7 is a kind of form schematic diagram receiving data-indication message that the embodiment of the present invention 3 provides;

Fig. 8 is a kind of Bitmap application example figure that the embodiment of the present invention 3 provides;

Fig. 9 is a kind of method flow diagram notifying data indication information to be received that the embodiment of the present invention 4 provides

Figure 10 is a kind of form schematic diagram expanding GTIM that the embodiment of the present invention 4 provides;

Figure 11 is a kind of device block diagram notifying data indication information to be received that the embodiment of the present invention 5 provides;

Figure 12 is a kind of device block diagram notifying data indication information to be received that the embodiment of the present invention 6 provides;

Figure 13 is a kind of method flow diagram obtaining data indication information to be received that the embodiment of the present invention 7 provides;

Figure 14 is a kind of method flow diagram obtaining data indication information to be received that the embodiment of the present invention 8 provides;

Figure 15 is a kind of device packets scheme schematic diagram that the embodiment of the present invention 8 provides;

Figure 16 is a kind of method flow diagram obtaining data indication information to be received that the embodiment of the present invention 9 provides;

Figure 17 is a kind of method flow diagram obtaining data indication information to be received that the embodiment of the present invention 10 provides;

Figure 18 a is a kind of device block diagram obtaining data indication information to be received that the embodiment of the present invention 11 provides;

Figure 18 b is a kind of device block diagram obtaining data indication information to be received that the embodiment of the present invention 11 provides;

Figure 19 is a kind of device block diagram obtaining data indication information to be received that the embodiment of the present invention 12 provides;

Figure 20 is a kind of system diagram sending and obtain data indication information to be received that the embodiment of the present invention 13 provides.

Embodiment

For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.

Embodiment 1

See Fig. 1, a kind of method notifying data indication information to be received, the executive agent of the method comprises AP (Access Point, access point), specifically comprises the steps:

Step 101: terminal equipment is divided into groups;

Step 102: the reception data-indication message sending each device packets successively, described reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets, and in described data indication information indicating equipment grouping to be received, whether each equipment has data to be received.

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: by being divided into groups by terminal equipment STA, send the realization of the technical scheme of the reception data-indication message of each device packets successively, the reception data-indication message message-length that each STA is divided into groups is controlled, improve the reliability of information transmission, by increasing the quantity of STA grouping, the information to be transmitted of a large amount of STA namely can be transmitted.

Embodiment 2

See Fig. 2, a kind of method obtaining data indication information to be received, the executive agent of the method comprises STA (Station supports the terminal equipment of 802.11 agreements), specifically comprises the steps:

Step 201: the reception data-indication message of receiving equipment grouping, described reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets, and in described data indication information indicating equipment grouping to be received, whether each equipment has data to be received;

Step 202: judge that whether described reception data-indication message is the reception data-indication message of this group device packets according to described grouping information,

If so, step 203 is performed;

If not, perform step 204;

Step 203: perform DRP data reception process according to described data indication information to be received;

Step 204: calculate the stand-by period needed for the reception data-indication message receiving this group device packets according to described grouping information, and when the described stand-by period arrives, the reception data-indication message of receiving equipment grouping again.

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: the realization of the technical scheme provided by the present embodiment, make equipment after the reception data-indication message of first time receiving equipment grouping, calculate the stand-by period, and the reception data-indication message of receiving equipment grouping after the stand-by period arrives, the reception data-indication message of self place device packets can be obtained, avoid the trouble of each all reception data-indication message of receiving equipment, save energy consumption.

Embodiment 3

See Fig. 3, a kind of method notifying data indication information to be received, consider and AP (Access Point in the present embodiment, access point) STA (Station that associates, support the terminal equipment of 802.11 agreements) numerous, communication delay is insensitive, the scene that amount of communication data is little, numerous STA can be divided into groups, obtain STA grouping, the reception data indication information of each transmission STA grouping, whether the STA that this reception data indication information is used to indicate in this STA grouping has data to be received, like this, the reception data indication information of each STA grouping is sent by continuous print, to notify whether each STA has data to be received, the executive agent of method described in the present embodiment is AP, concrete steps are as follows:

Step 300:AP is that the STA associated with it distributes AID;

Preferably, AP accesses WiFi (Wireless Fidelity according to STA associated with it, Wireless Fidelity) time of wireless network is that STA associated with it distributes continuous print AID, when some STA associated with AP is disconnected the connection with WiFi, so, dynamic conditioning is distributed to the AID of the STA associated with AP by AP, to ensure that the AID of the STA associated with AP is continuous print;

Such as, the STA be associated with AP ₁, STA ₂, STA ₃..., STA ₂₀₁₅, amount to 2015 STA, these 2015 STA are access WiFi wireless network successively, and AP distributes to STA ₁, STA ₂, STA ₃..., STA ₂₀₁₅aID be respectively 1,2,3 ..., 2015, work as STA ₂, STA ₃when being disconnected the connection with WiFi network, AP originally will distribute to STA ₂, STA ₃aID 2, AID 3 be reassigned to STA ₂₀₁₄, STA ₂₀₁₅, thus avoid in the sequence of AID, there is spacing code not associated in enormous quantities;

According to the regulation of existing specification, AID is that 0 reservation uses, whether have multicast message need send, that is, the AID of STA can not be 0 if being used to indicate AP, but in the present invention, according to the difference of AP to STA packet mode, under part way can for STA be assigned as 0 AID, the present invention will not emphasize whether to can be the AID that STA distributes 0 value, this is a concrete regulation, does not affect the general applicability of inventive concept;

This step ensures the continuity of the AID of the STA associated with AP, be in subsequent process to STA according to AID to when dividing into groups, occur that middle STA is grouped into empty problem.

It should be noted that, this step is optional step;

The STA associated with it divides into groups by step 301:AP;

Particularly, STA associated with it divides into groups by AP, comprises following three kinds of modes:

Mode one: by association identification AID (the Association ID of STA, association identification) in predetermined bit hyte as the group character hyte of STA, this group character hyte is for the packet count of the packet number and STA grouping that identify STA grouping belonging to this STA; According to the group character hyte in the AID of STA, STA is divided into groups;

Now illustrate how according to the group character hyte in the AID of STA, STA to be divided into groups, as follows:

As shown in Figure 4, AID is one 16 long contents, and the span of AID is 1 ~ 2007 and is placed on low 14 is that in B0 to 13, wherein, B0 is lowest order, and B13 is highest order; Suppose the group character position of low 2 B1, the B0 in the AID of STA as STA, when B1B0 value is " 00 ", this illustrates that it is in the STA grouping of 0 that this STA is assigned to packet number, when B1B0 value is " 01 ", then illustrate that it is in the STA grouping of 1 that this STA is assigned to packet number, the like; Because this value of two can be " 00 ", " 01 ", " 10 ", 4 values such as " 11 ", namely the STA associated with it is divided into 4 STA to divide into groups by AP.So, suppose low 3 B2 in the AID of STA, B1 and B0 is as the group character position of STA, then when the value of B2B1B0 is " 000 ", then this STA being assigned to packet number is in the STA grouping of 0, when the value of B2B1B0 is " 001 ", it is in the STA grouping of 1 that AP needs STA to be assigned to packet number as requested, by that analogy, due to the value of B2B1B0 can be " 000 ", " 001 ", " 010 " ..., and 8 values such as " 111 ", namely STA can be divided into 8 STA groupings; Etc..So, AP just can carry out the corresponding predetermined bit hyte arranged in AID according to the requirement of packet count, to meet the STA grouping situation of different grouping number requirement.

Under this packet mode, AP can be associated with in the process of AP at STA, the AID bit hyte information for dividing into groups is indicated in associate response message, also can this bit hyte information be included in the reception data-indication message of grouping, when STA receives the AID bit hyte information for dividing into groups, can determine the total packet count in the grouping at oneself place and system according to the AID of oneself, STA can also obtain its position in the follow-up reception data indication information received according to the AID of self and the AID bit hyte information for dividing into groups.

Mode two: the span determining the association identification of terminal equipment in the packet count of device packets and each device packets; According to the span of the association identification of terminal equipment in the association identification of terminal equipment and described device packets, terminal equipment is divided into groups;

Specifically comprise the steps:

Step 301-1: packet count is set according to the actual requirements, as consider Beacon (beacon) frame length, transmission time, network load etc. require in one or more to arrange packet count;

Such as, after considering the requirement of Beacon frame length, transmission time and network load, arranging packet count is 63, that is: STA is divided into 63 STA groupings;

In one embodiment, the packet count that the time relative set STA receiving the reception data-indication message of self place grouping according to STA divides into groups, owing to considering in this embodiment that each STA divides into groups to send successively according to certain fixed cycle continuous print the situation of reception data-indication message corresponding to each STA grouping, so, if STA to be divided into 63 groupings, then STA just needs every 63 cycles just can receive the reception data-indication message of self place grouping, certainly in order to shorten or lengthen the time that STA receives the reception data-indication message of himself place grouping, only need the STA packet count that corresponding size is set,

Step 301-2: the number adding up the STA be associated with AP, and the span determining the AID of STA in each STA grouping according to the packet count of adding up STA number and the equipment obtained;

Such as, the STA be associated with AP has 2015, the packet count of the STA arranged is 63, namely can have at most 32 STA in each STA grouping, so, the AID scope of the STA in first STA grouping is 1 to 32, the AID scope of the STA in second STA grouping is 33 to 64, in i-th STA grouping, the span of the AID of STA is that (32* (i-1)+1) arrives 32*i etc., and wherein, the span of i is 1 to 63;

Step 301-3: during the STA belonging to being assigned to separately by each STA be associated with AP according to the AID of STA divides into groups;

Such as, STA ₁corresponding AID is 1, in first STA grouping the AID of STA span in, by STA ₁assign in first STA grouping, STA ₇₈corresponding AID is 78, in the span of the AID of the STA in the 3rd STA grouping, then by STA ₇₈assign in the 3rd STA grouping, the like, complete the grouping to STA;

So, after the process of step 302-1 to step 302-3,2015 STA be associated with AP are divided into 63 groups, often have 32 STA in group, and each STA grouping situation is as follows:

AID 1, AID 2 ..., STA corresponding to AID 32 belongs to the STA grouping that packet number is 1;

AID 33, AID 34 ..., STA corresponding to AID 64 belongs to the STA grouping that packet number is 2;

……

AID 1985, AID 1986 ..., STA corresponding to AID 2015 belongs to the STA grouping that packet number is 63;

Under this packet mode, AP can be associated with in the process of AP at STA, the sum of STA in indication mechanism in associate response message, the maximum AID value allowed, the information such as the packet count that system is total or the STA quantity often organized, STA can calculate the packet number at oneself place according to these information, and obtain total group number, can also according to its AID and total group number or often organize STA quantity calculate this STA position in a packet, to determine which bit is the indication information of correspondence oneself in the follow-up reception data indication information received, certain AP also can directly by packet number, total group number, this STA tells STA in position in a packet, remove STA to calculate.

Mode three, be in advance terminal equipment allocation packets mark, this group character and packet number; According to this group character, terminal equipment is divided into groups;

Particularly, AP is when the STA for associating with it distributes AID, and also for this STA distributes a group character, here, the AID distributed for STA and group character are independently two marks; Such as, when AP is STA distribution AID, the group character distributed for this STA is 3, then this STA belongs to the STA grouping that packet number is 3; Or

AP is that the STA associated with it distributes an EAID (Extended Association ID, expansion association identification), and this EAID comprises the group character of STA and the AID mark of STA; Such as, specify the predetermined figure of high-order portion in EAID to be used to indicate the group character of STA, remain figure place in EAID when being used to indicate the AID of STA.

In addition, it should be noted that, under this STA packet mode, AP can in follow-up process the grouping situation of dynamic conditioning STA, such as, AP be initially STA1 distribute group character be 3, namely specify this STA1 belong to packet number be 3 STA grouping, but, need the group character of STA1 to be set to 1 based on some, having assigned to packet number by STA1 is in the STA grouping of 1, correspondingly, the AID of this STA also may need amendment, and this is all allow.

Under this packet mode, AP can be associated with in the process of AP at STA, the packet count that STA place packet number, system are total is indicated in associate response message, can also comprise the STA quantity or the interior maximum AID value of group often organized, according to AID value in its group, STA can determine which bit is the indication information of correspondence oneself in the follow-up reception data indication information received.

Whether step 302:AP detects each STA in a group data to be received, if had, then the Data Indicator bit to be received of STA is set to 1, if do not had, then the Data Indicator bit to be received of STA is set to 0, thus obtains the data indication information to be received of each STA;

Particularly, whether AP is in real time or detect before the data-indication message to be received sending grouping and have data will send to each STA in grouping.For each STA, if there are data will send to it, Data Indicator bit can be received and be set to 1, if do not had, then its Data Indicator bit to be received is set to 0.

Step 303: the grouping generated corresponding to STA grouping receives data-indication message, i.e. GTIM (GroupedTraffic Indication Message, grouping receives data-indication message), this reception data-indication message comprises data indication information to be received and the grouping information of each STA in STA grouping;

Particularly, testing result in step 302 can be set in GTIM, obtain the reception data-indication message of STA grouping, current grouping information is set in reception data-indication message simultaneously, according to the grouping situation of step 301, this grouping information comprises packet number and the packet count of current device grouping, or comprise the packet number of current device grouping, packet count and packet size, or comprise the packet number of current device grouping, group character hyte information in association identification, in described data indication information indicating equipment grouping to be received, whether each equipment has data to need to receive,

Figure 5 shows that the form of TIM in existing specification (Traffic Indication Message receives data-indication message) message, only introduce the definition of each field relevant with the present invention in figure here:

Element ID: length is a byte is a TIM message for identifying this message;

Length: length is a byte, for identifying the total length of this TIM message;

Bitmap Control: length is a byte, from indicating bit Bit 0 to Bit 7, wherein, Bit 0 is the indicating bit whether having broadcast, unrelated to the invention, other 7 bit representation deviant, AID in instruction PartialVirtual Bitmap representated by an initial bit, and the STA of AID representatives all before the AID representated by this initial bit does not have data to be received, namely be omitted from the indicating bit of the STA of AID all before the AID representated by this initial bits position representative, this is a kind of method compressing Bitmap;

Whether each STA of Partial Virtual Bitmap: length is between 1 to 251 bytes, each Bit in Bitmap (bitmap) corresponding sign has data to be received; When the Bit value in Bitmap is 1, represent that the STA available for transmission data of its correspondence need to receive; Which STA each Bit specifically in Bitmap represents needs to calculate according to the value of Bitmap Control and the compression situation of Bitmap, is not described in detail here;

The present invention adopts same procedure to be set in Partial Virtual Bitmap field by the Data Indicator bit to be received of each STA in each STA grouping, and still can adopt above-mentioned compression method; For uncompressed front Bitmap, its first bit is the Data Indicator bit to be received of first STA in grouping, and second bit is the Data Indicator bit to be received of second STA in grouping, and the rest may be inferred;

Unlike, the present invention receives in STA grouping the grouping information also carrying STA grouping in data-indication message (GTIM), this grouping information can comprise packet number and the packet bit group information of STA grouping according to packet mode used, or, this grouping information comprises the total packet count of packet number, the system of STA grouping and packet size, or this grouping information comprises the total packet count of packet number, the system of STA grouping;

Wherein, if use the mode two described in step 301 to divide into groups, grouping information comprises packet number, packet count and the packet size that STA divides into groups, then can in TIM new field GTIM Number, GTIM Period and GTIM Size, be respectively used to identify the grouping informations such as packet number, packet count and the packet size corresponding to STA data indication information to be received carried in GTIM message;

Particularly, after above-mentioned process, the form of the reception data-indication message of STA grouping is concrete as shown in Figure 6, and in figure, each field is defined as follows:

Element ID: different from the value of the Element ID in TIM, here, this field is that a grouping receives data-indication message, i.e. GTIM message for identifying this message;

Length: identical with the meaning of the Length in TIM, namely this field is for identifying the total length receiving data-indication message;

GTIM Number: for identifying the STA packet number corresponding to the STA indication information to be received that receives in data-indication message and carry, what namely this reception data-indication message was carried is each STA data indication information to be received in which group;

GTIM Period: for identification packet number, if the reception data-indication message that each STA divides into groups sends successively in turn, this field also can represent the transmission cycle receiving data-indication message;

GTIM Size: for identification packet size, namely each STA grouping comprises how many STA;

Bitmap Control: identical with the meaning of the Bitmap Control in TIM, if namely in same group several initial STA do not have data to be received, then can adopt the compress mode identical with TIM by initial be all 0 indicating bit dispense; The computing formula be different from existing specification can be adopted during STA but according to first Bit representative in the exploitation Bitmap of Bitmap Control, such as, the value of B1 to B7 in BitmapControl directly can be considered as the number of abridged 0 in Bitmap.

Partial Virtual Bitmap: identical with the meaning of the Partial Virtual Bitmap in TIM, data indication information is received for identifying each STA in STA grouping, the maximum number of digits of Bitmap (bitmap) mates with packet size, every reception data indication information for corresponding STA in correspondence mark STA grouping;

Wherein, if use the mode three described in step 301 to divide into groups, grouping information comprises packet number and the packet count of STA grouping, new field GTIM Number, GTIM Period can be respectively used to identify the packet number corresponding to STA data indication information to be received and total group number of carrying in GTIM message in TIM; The form of the reception data-indication message of STA grouping is concrete as shown in Figure 7, and in figure, the definition of each field is identical with the meaning of corresponding field in Fig. 6, just repeats no more herein.

Wherein, if use the mode one described in step 301 to divide into groups, grouping information comprises the bit hyte information representing grouping in the packet number of STA grouping and AID.Represent in described AID that the bit hyte information table of grouping shows and get which position in AID as group character, such as use AID low three as group character, then this field can value be 3, represent that low three in AID is group character, also can adopt mask mode, such as 0x0003, this is the expression way of 16 systems, being a numerical value identical with the length of AID, is wherein that the part of 1 represents that in AID, the value of this part is the group mark of STA place grouping.The benefit of mask mode is adopted to be to adopt any position in AID as group mark, and the not necessarily continuous position of low level or the continuous position of a high position.

As shown in Figure 8, the use example of Bitmap is as follows: in Fig. 8, in Partial Virtual Bitmap, the value of Bit 2, Bit 7, Bit 22 and Bit 24 is 1, then represent that the STA available for transmission data of AID 2, AID 7, AID 22 and AID 24 correspondence need to receive.

Such as, generate the reception data-indication message of above-mentioned 63 STA grouping respectively, be designated as respectively GTIM1, GTIM 2 ..., GTIM 63; Wherein, packet number is the reception data-indication message of the STA grouping correspondence of 1 is GTIM 1, in this GTIM 1 message, GTIM Number is 1, GTIM Period is 63, GTIM Size is 32, carry the data indication information to be received that packet number is the STA of 1, every correspondence namely in Partial VirtualBitmap identify packet number be each STA of 1 whether have data to be received; Packet number is the reception data-indication message of the STA grouping correspondence of 2 is GTIM 2, in this GTIM 2 message, GTIM Number is 2, GTIM Period is 63, GTIM Size is 32, carry the information to be transmitted that packet number is the STA of 2, every correspondence namely in Partial Virtual Bitmap identifies the information to be transmitted that packet number is each STA of 2;

It should be noted that in addition, such as Element ID, Length, GTIM Number, GTIM Period and the GTIM Size etc. of the message header part in above-mentioned reception data-indication message can share byte, can reduce the byte length of GTIM message further.

The reception data-indication message of the STA grouping that step 304:AP broadcast generates;

Particularly, the AP packet number order of dividing into groups according to STA or inverted order send the reception data-indication message of the STA grouping generated;

Such as, AP successively send that packet number is 1 according to packet number, 2 ..., 63 reception data-indication message GTIM 1, GTIM 2 ..., GTIM 63;

In one embodiment, AP is not the reception data-indication message sending STA grouping independently, but send each reception data-indication message by Beacon (beacon) frame of periodic broadcast, namely the reception data-indication message of STA grouping sends as the part of Beacon frame, so, the reception data-indication message that each STA group is corresponding all to be sent, then AP needs through having come with the Beacon frame of packet count same number, during each transmission Beacon, all reception data-indication message corresponding to a STA grouping is carried successively by packet number order or inverted order in Beacon frame,

Wherein, transmission cycle and the Beacon cycle (beacon period) of Beacon frame is also comprised in this Beacon frame, as AP sends a Beacon frame every the time of 10ms, then can send the reception data-indication message of STA grouping every the time of 10ms, so, the reception data-indication message of each STA group all be sent, then AP needs just can complete through the time of Beacon cycle * packet count;

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought: the present invention is by dividing into groups to STA, and generate and send the reception data-indication message of each STA grouping successively, the reception data-indication message length that each STA is divided into groups is controlled, avoid receiving data-indication message length long, improve the reliability of information transmission, in addition, by increasing the packet count of STA, namely can indicate whether there are data to be received to a large amount of STA in batches, moreover, the packet number order that in the present embodiment, AP divides into groups according to STA or inverted order send the GTIM that each STA divides into groups, make STA when receiving the GTIM of each STA grouping, can regularly follow, namely STA receives the GTIM's of each STA grouping successively according to the packet number of STA grouping, according to this rule, make STA need not will remove to receive the GTIM of each STA grouping that AP sends each Beacon cycle, only need the GTIM receiving the STA place grouping that AP sends at the time point determined can obtain the indication information whether self has data to be received, less demanding to real-time communication and in the communication system that amount of communication data is less again, this is conducive to STA power saving.

Embodiment 4

See Fig. 9, a kind of method notifying data indication information to be received, consider and AP (Access Point in the present embodiment, access point) STA (Station that associates, support the terminal equipment of 802.11 agreements) numerous, communication delay is insensitive, little and the scene of low speed of amount of communication data, numerous STA can be divided into groups, obtain STA grouping, the reception data indication information of each transmission STA grouping, whether the STA that this reception data indication information is used to indicate in this STA grouping has data to be received, like this, by repeatedly sending the reception data indication information that each STA divides into groups respectively, to notify whether each STA has data to be received, under being low speed scene, then often can send the reception data indication information of one group of STA, just send multiple auxiliary Indication message, to strengthen the time interval of the reception data indication information sending this group and next group STA, wherein, auxiliary Indication message comprises grouping information, the count information at interval information and GTIM interval, the executive agent of method described in the present embodiment is AP, and concrete steps are as follows:

The STA (Station supports the terminal equipment of 802.11 agreements) that step 400:AP associates with it distributes AID (Association ID, association identification);

Content in detailed in Example 3 described in step 300, just repeats no more herein.

STA associated with it divides into groups by step 401:AP;

Group technology described in this step is identical with the group technology described in embodiment 3 step 301, just repeats no more herein.

Whether step 402:AP detects each STA in a group data to be received, if had, then the Data Indicator bit to be received of STA is set to 1, if do not had, then the Data Indicator bit to be received of STA is set to 0, thus obtains the data-indication message to be received of each STA;

Content described in detailed in Example 3 step 302, just repeats no more herein.

Step 403: the expansion generating STA grouping receives data-indication message;

This expansion receive reception data-indication message that in data-indication message and embodiment 3, step 303 generates unlike, this expansion receives data-indication message except the grouping information of the data indication information to be received and STA grouping comprising each STA in STA grouping, also comprises interval information and gap count information; Described interval information refers to that adjacent two comprise STA grouping and receive between the Beacon frame of data-indication message, the number of the auxiliary Indication message sent, described gap count information changes between described interval information value 0, and whether instruction current message is described reception data-indication message;

Particularly, the STA grouping generated in step 303 in embodiment 3 receives new field GTIM Interval and GTIM Number in the message header of data-indication message and can be expanded reception data-indication message, new field is respectively used to identify interval information, gap count information, this expansion receives the form of data-indication message as shown in Figure 10, and in figure, each field is defined as follows:

Element ID: for identify this message be one expansion receive data-indication message;

Length: the total length receiving data-indication message for identifying expansion;

GTIM Count: the expansion of dividing into groups for being identified at current STA also will send the expansion reception data-indication message that how many auxiliary Indication messages just can send next STA grouping after receiving data-indication message, numerical value changes between 0 and interval information value, and 0 represents that this message expands reception data-indication message exactly;

GTIM Interval: the expansion for identifying two adjacent STA groupings receives between data-indication message, the number of the auxiliary Indication message of transmission;

GTIM Number: represent packet number that is that sending or that be next time about to the STA grouping sent, as GTIM Count=0, what represent current transmission is exactly that the expansion of STA grouping receives data-indication message, and this field identification to send the packet number of STA grouping; If GTIM Count is not equal to 0, then this field can identify the packet number being next time about to send STA grouping or the packet number being left transmission STA grouping recently.

GTIM Period: for identification packet number, because each grouping sends successively in turn, then this field show also the transmission cycle that expansion receives data-indication message;

GTIM Size: for identification packet size, namely each grouping comprises how many STA;

According to group technology, GTIM Period and GTIM Size may not need, or only needs GTIMPeriod; If divide into groups according to the mode one described in embodiment 3 step 301, GTIM Period and GTIM Size does not need, but represent grouping situation by a packet bit hyte information, associated description in detailed in Example 3 step 301, the expansion that so just further can reduce STA grouping receives the length of data-indication message;

Bitmap Control: describe accordingly see in embodiment 3;

Partial Virtual Bitmap: describe accordingly see in embodiment 3;

It should be noted that in addition, such as Element ID, Length, GTIM Number, GTIM Period and the GTIM Size etc. of the message header part in above-mentioned GTIM message can share byte, reduces the byte length that this expansion receives data-indication message further.

The expansion reception data-indication message that the STA grouping that step 404:AP broadcast generates is corresponding;

It should be noted that, AP is after the expansion often having broadcasted a STA grouping receives data-indication message, just send a gap count information value auxiliary indication information, and then the expansion sending next STA grouping receives data-indication message, so, until the expansion reception data-indication message of being divided into groups by each STA is sent; Expansion receives data-indication message or auxiliary Indication message is all send in Beacon frame, that is, often the expansion of STA grouping of adjacent two receives and to insert several Beacon cycle between data-indication message and sends auxiliary Indication message, and the reception data-indication message intactly sending once all groupings is needed for more time.

Wherein, auxiliary Indication message comprises grouping information, interval information and gap count information, and meaning is consistent with expanding the grouping information, interval information and the gap count information that receive in data-indication message.

The beneficial effect that the technical scheme that the present embodiment adopts reaches is the same with the beneficial effect that embodiment 3 reaches, in addition, after the embodiment of the present invention receives data-indication message by the expansion often sending a STA grouping, just send several auxiliary indication informations, strengthen STA and receive the interval time that expansion receives data-indication message, be more suitable for and the application scenarios of low data bulk very insensitive to communication delay, be more conducive to STA power saving.

Embodiment 5

See Figure 11, a kind of method notifying data indication information to be received, consider and AP (Access Point in the present embodiment, access point) STA (Station that associates, support the terminal equipment of 802.11 agreements) numerous, communication delay is insensitive, little and the scene of low speed of amount of communication data, numerous STA can be divided into groups, obtain STA grouping, the reception data indication information of each transmission STA grouping, whether this reception data indication information each STA be used to indicate in STA grouping has data to need to receive, like this, by repeatedly sending the reception data indication information that each STA divides into groups respectively, to notify whether each STA has data to be received, insensitive for communication delay, under the little scene of amount of communication data, then can after the reception data indication information sending each STA grouping continuously, send one or more auxiliary Indication message, then, continuous print sends the reception data indication information of each STA grouping can strengthen the time interval that STA receives the reception data-indication message of its place group again, the executive agent of method described in the present embodiment is AP, concrete steps are as follows:

The STA (Station supports the terminal equipment of 802.11 agreements) that step 500:AP associates with it distributes AID (Association ID, association identification);

Refer to the content described in step 300 in enforcement 2, just repeat no more herein.

STA associated with it divides into groups by step 501:AP;

Step 502:AP setting is greater than the Beacon periodicity of total packet number, and be called the carousel cycle length receiving data-indication message, unit is the Beacon cycle, is called for short carousel cycle length;

Particularly, comprise in carousel cycle send broadcast the phase containing the indication information receiving data-indication message and send auxiliary Indication message without the indication information broadcasting phase, within the indication information broadcasting phase, continuously the reception data-indication message that each STA divides into groups is sent, afterwards, without in the indication information broadcasting phase, auxiliary Indication message is sent, complete the transmission that takes turns the reception data-indication message that each STA divides into groups;

Such as, STA is divided into 8 groupings by AP, carousel cycle is set to 20, then AP will continuously in 8 Beacon cycles, namely, within the Indication message broadcasting phase, the reception data-indication message of STA grouping in the Beacon frame of transmission, is comprised, and in ensuing 12 Beacon cycles, namely without in the indication information broadcasting phase, in the Beacon frame of transmission, auxiliary Indication message is comprised.

Step 503: within the Indication message broadcasting phase, whether AP detects each STA in STA grouping corresponding to current Beacon cycle data to be received, and without in the indication information broadcasting phase, whether AP does not detect STA data to be received;

Refer to the content described in step 302 in enforcement 2, just repeat no more herein.

Step 504: generate expansion and receive data-indication message;

It is the same with the method described in step 403 in embodiment 4 that this expansion receives data-indication message generation method, receive interpolation interval information in data-indication message unlike, this expansion and gap count information different from the meaning of the interval information of adding in step 403 in embodiment 4 and gap count information;

Particularly, in the present embodiment, interval information is indicated to the described auxiliary Indication message number sent between the reception data-indication message of next round transmitting apparatus grouping, gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

Particularly, this expansion receives the form of data-indication message as shown in Figure 10 (structure receiving data-indication message with the expansion of embodiment 4 is substantially identical), and in figure, each field is defined as follows:

GTIM Count: for be identified at current transmission auxiliary Indication message after also have how many auxiliary Indication messages just can send to receive data-indication message containing expansion;

Particularly, GTIM Count has two kinds of counting modes:

The first, GTIM Count starts to count until be 0 downwards from GTIM Interval; When GTIMCount is not 0, current transmission be auxiliary Indication message, its value indicates also to be wanted how many Beacon cycles just to start next round to send the reception data-indication message of dividing into groups; When GTIM Count is 0, then current transmission is the reception data-indication message of device packets;

The second, GTIM Count upwards counts until equal with GTIM Interval from 0, when GTIMCount and GTIM Interval is unequal, current transmission be auxiliary Indication message, its value indicates the Beacon cycle that next round sends the reception data-indication message process of grouping, and the so remaining Beacon cycle is exactly that GTIM Interval subtracts GTIM Count; When GTIM Count and GTIMInterval is equal, then current transmission is the reception data-indication message of device packets; GTIM Count in embodiment 4 can have identical implementation method;

GTIM Interval: start the continuous reception data-indication message sending STA grouping after identifying the auxiliary Indication message in how many of interval, namely broadcast the Beacon number of phase without indication information;

Wherein, GTIM Interval is added with STA packet count and equals carousel cycle length, and here, STA packet count i.e. indication information broadcast the Beacon number of phase;

GTIM Number: broadcast at indication information in the reception data-indication message of the grouping of phase and represent the packet number sent, not to exist or meaningless in the auxiliary Indication message without the indication information broadcasting phase.

GTIM Period: identification packet number;

GTIM Size: packet size, namely each grouping comprises how many STA;

According to group technology, GTIM Period and GTIM Size may not need, or only needs GTIMPeriod; If divide into groups according to the method one described in embodiment 3 step 301, GTIM Period and GTIM Size does not need, but represents grouping situation by a packet bit hyte information, the associated description in detailed in Example 3 step 301;

Bitmap Control: see description relevant in embodiment 3;

Partial Virtual Bitmap: see description relevant in embodiment 3;

The expansion of the STA grouping that step 505:AP broadcast generates receives data-indication message;

It should be noted that, if AP sends one or multiple auxiliary Indication message after the expansion having broadcasted each STA grouping receives data-indication message, wherein, expansion receives data-indication message or auxiliary Indication message is all send in Beacon frame; That is, receive and to insert several Beacon cycle between data-indication message and sends auxiliary Indication message often sending expansion that each STA divides into groups, the reception data-indication message intactly sending once all groupings is needed for more time.

The beneficial effect that the technical scheme that the present embodiment adopts reaches is the same with the beneficial effect that embodiment 4 reaches, in addition, the embodiment of the present invention is by after the reception data-indication message that to send each STA continuously and divide into groups, send several and do not comprise reception data indication information Beacon frame to extend the time that carousel STA receives data indication information, the cycle making all STA reception once receive data indication information strengthens, the very insensitive and application scenarios of low data bulk for communication delay, is more conducive to STA power saving.

Real-time example 6

See Figure 12, a kind of device notifying data indication information to be received, this device comprises the AP in said method embodiment, comprising: grouping module 601 and sending module 602, introduces the concrete function of each module below in detail:

Grouping module 601, for dividing into groups terminal equipment;

Sending module 602, for sending the reception data-indication message of each device packets successively, described reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets, and in described data indication information indicating equipment grouping to be received, whether each equipment has data to be received.

Wherein, grouping information comprises packet number and the packet count of current device grouping; Or grouping information comprises packet number, packet count and the packet size that current device divides into groups; Or grouping information comprises the group character position in association identification.

Particularly, grouping module 601 comprises:

Determining unit 6011, for determining the span of the association identification of terminal equipment in the packet count of device packets and each device packets;

Grouped element 6012, for dividing into groups terminal equipment according to the span of the association identification of terminal equipment in the association identification of terminal equipment and device packets; Or

Grouping module 601, comprising:

Setting unit 6013, for using the bit of the predetermined figure in the association identification of terminal equipment as group character position;

Grouped element 6014, for dividing into groups terminal equipment according to the group character position in the association identification of terminal equipment; Or

Grouping module 601 comprises:

Allocation units 6015, for setting in advance as terminal equipment allocation packets mark;

Grouping module 6016, for dividing into groups terminal equipment according to group character.

Particularly, when the reception data-indication message of the device packets that generation module 602 generates also comprises interval information and gap count information

Correspondingly, sending module 603, for after the reception data-indication message often sending a device packets, sends one or more auxiliary Indication messages;

Described auxiliary Indication message comprises described interval information, gap count information and grouping information;

The described auxiliary Indication message number sent between the reception data-indication message of adjacent two device packets of described interval information instruction, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

Correspondingly, sending module 603, for after the reception data-indication message sending each device packets successively, sends one or more auxiliary Indication messages;

Described interval information is indicated to the described auxiliary Indication message number sent between the reception data-indication message of next round transmitting apparatus grouping, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

This device also comprises:

Detection module 603, for the data indication information to be received of sense terminals equipment;

Generation module 604, for generating the reception data-indication message of device packets according to the data indication information to be received detected.

Dynamic assignment module 605, for being terminal equipment dynamic assignment continuous print association identification.

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: by being divided into groups by terminal equipment STA, send the realization of the technical scheme of the reception data-indication message of each device packets successively, the message-length of the reception data-indication message that each STA is divided into groups is controlled, improve the reliability of information transmission, by increasing the quantity of STA grouping, the information to be transmitted of a large amount of STA namely can be transmitted; In addition, when comprising interval information, gap count information in reception data-indication message, this interval information, gap count information increase the stand-by period of STA, make STA information to be transmitted can wait for the longer time, are more suitable for the application scenarios of low speed.

Embodiment 7

See Figure 13, a kind of method obtaining data indication information to be received, the executive agent of the method comprises terminal equipment STA, specifically comprises the steps:

Step 701:STA receives the reception data-indication message of each STA grouping that AP sends, and this reception data-indication message comprises the data indication information to be received of each STA in STA grouping and the grouping information of STA grouping;

Step 702:STA obtains the grouping information of STA grouping from the reception data-indication message that the STA of current reception divides into groups;

Such as, grouping information GTIMPeriod=63, GTIM Size=32, GTIM Number=5 in the reception data-indication message of the STA grouping of current reception, represent have in 63 STA grouping, STA grouping has 32 STA, the GTIM of this GTIM received to be packet number be STA grouping of 5;

According to the grouping information obtained, step 703:STA judges whether the reception data-indication message of current reception is the reception data-indication message that self place STA divides into groups,

If so, step 704 is performed;

If not, then return step 701;

Particularly, according to the grouping information obtained, STA judges whether the reception data-indication message of current reception is the reception data-indication message that self place STA divides into groups, and comprising:

Step 703-1:STA obtains the packet number that self place STA divides into groups;

Particularly, STA can be obtained the packet number of self place STA grouping by following three kinds of modes:

Mode one, STA obtain the packet number that self place STA divides into groups after being rounded divided by the packet size in the grouping information obtained by the AID of self; Such as, the AID of STA is 24, obtains 0 after rounding divided by the packet size 63 obtained, then, the packet number that this STA self place STA divides into groups is 0;

Mode two, obtain the packet number of self place device packets according to the group character position of the association identification of self;

Particularly, STA obtains group character position from the AID of self, the packet number that this group character bit-identify STA place STA divides into groups and STA packet count; Such as, high two in AID is the group character position of STA, and the group character position information of acquisition is " 00 ", then the packet number of the STA grouping at self place is 0, if the group character position information obtained is " 10 ", then the packet number of the STA grouping at self place is 2, and so on.

Mode three, obtain the packet number of self place device packets according to the group character self distributed, this group character identifies the packet number that self place STA divides into groups;

Particularly, AP is when distributing AID for STA, and just for this STA is assigned with corresponding group character, for identifying the packet number that this STA place STA divides into groups, as the group character 5 of STA, then this STA then belongs to the STA grouping that packet number is 5;

Step 703-2:STA judges that whether the packet number that self place STA divides into groups is consistent with the packet number in the grouping information obtained,

If consistent, then the reception data-indication message of current reception is the reception data-indication message that self place STA divides into groups;

If inconsistent, then the reception data-indication message of current reception is not the reception data-indication message that self place STA divides into groups, and abandons the reception data-indication message of this current reception;

Step 704:STA obtains the data indication information to be received of oneself from current reception data-indication message;

Step 705:STA judges self whether have data to need to receive according to the data indication information to be received of self,

If had, then AP is asked to send data, or, wait for that AP initiatively sends data;

If no, then wait for AP transmitting and receiving data Indication message again.

Such as, receive the Bitmap of the STA data indication information to be received that data-indication message is carried as shown in Figure 2, the value of the Bitmap of AID 24 correspondence is 1, and this illustrates that this STA has data to need to receive.

Step 701 is processes that circulation performs to 705, the reception data-indication message that STA sends by constantly receiving AP, and judge whether this reception data-indication message is the reception data-indication message that self place STA divides into groups, until obtain the reception data-indication message of self place STA grouping, and therefrom obtain the data indication information to be received of self;

The beneficial effect that the embodiment of the present invention is brought is: the reception data-indication message sent by constantly receiving AP by STA, and judge whether this reception data-indication message is the reception data-indication message that self place STA divides into groups, until obtain the reception data-indication message of self place STA grouping, and therefrom obtain the realization of the technical scheme of the data indication information to be received of self, by simply judging the reception data-indication message that just can obtain the grouping of self place from the reception data-indication message received, thus obtain the data indication information to be received of self.

Embodiment 8

See Figure 14: a kind of method obtaining data indication information to be received, the executive agent of the method comprises terminal equipment STA, specifically comprises the steps:

Step 801:STA receives the reception data-indication message of the STA grouping that AP sends, this reception data-indication message comprises the data indication information to be received of each STA in STA grouping and the grouping information of STA grouping, wherein, whether data indication information instruction STA to be received has data to be received;

Step 802:STA obtains the grouping information of STA grouping from the reception data-indication message that the STA of current reception divides into groups;

Wherein, grouping information comprises packet number and the packet count of current device grouping; Or

Grouping information comprises packet number, packet count and the packet size that current device divides into groups; Or

Grouping information comprises the packet number of current device grouping, the group character hyte information in association identification.

According to the grouping information obtained, step 803:STA judges whether the reception data-indication message of current reception is the reception data-indication message that self place STA divides into groups,

If so, then step 806 is performed;

If not, then perform step 804;

In one embodiment, according to the grouping information obtained, STA judges whether the reception data-indication message of current reception is the reception data-indication message that self place STA divides into groups, and comprising:

Step 803-1:STA obtains the packet number that self place STA divides into groups;

Specifically see the description in the step 703-1 of embodiment 7.

Step 803-2:STA judges that whether the packet number that self place STA divides into groups is consistent with the packet number in the grouping information obtained,

If inconsistent, then the reception data-indication message of current reception is not the reception data-indication message that self place STA divides into groups;

Step 804:STA calculates the time receiving the reception data-indication message that self place STA divides into groups according to grouping information, be designated as the first stand-by period, and can battery saving mode be entered within this first stand-by period, do not receive any reception data-indication message that AP sends, to save energy consumption, perform step 805;

Wherein, the first stand-by period was STA between first time receives time that time of the reception data-indication message of the STA grouping that AP sends and STA receive the reception data-indication message that self place STA divides into groups interval time;

In one embodiment, the packet number that STA divides into groups according to the packet count obtained, packet number and self place calculates the stand-by period, comprising:

The size of the packet number that STA contrast obtains and the packet number divided into groups in self place,

If the packet number obtained is less than the packet number of self place grouping, then adopt the first preset formula: in (packet number of the packet number-acquisition of self place grouping) the * Beacon cycle, calculated for the first stand-by period;

Below, the origin of the first preset formula is simply introduced:

AP sends reception data-indication message corresponding to each grouping according to packet number order to STA, the reception data-indication message be currently received is the reception data-indication message of the grouping correspondence of the packet number obtained, so, receive the reception data-indication message that the grouping of self place is corresponding, then (packet number that self place packet number-go obtains) the individual reception data-indication message that only needs to receive that AP sends after this; Again because AP carries each group of corresponding reception data-indication message by Beacon frame to send, so STA only needs to wait for that ((self place packet number-go the packet number of acquisition) * Beacon cycle) receives the reception data-indication message of AP transmission afterwards;

Such as, the packet number of self place grouping is 5, the reception data-indication message of the reception data-indication message be currently received to be packet number the be grouping correspondence of 1, STA receives the reception data-indication message that AP sends after the time in 4 Beacon cycles of dormancy, just can obtain reception data-indication message corresponding to self place grouping;

If the packet number obtained equals the packet number of self place grouping, then the reception data-indication message of current reception is reception data-indication message corresponding to self place grouping, and now, the first stand-by period was 0;

If the packet number obtained is greater than the packet number of self place grouping, then the second preset formula ((packet count-go the packet number of packet number+self place grouping obtained) * Beacon cycle) is adopted to calculate for the first stand-by period;

Below, the origin of the second preset formula is simply introduced:

The factors such as unstable networks, STA waits for too long, AP dynamic conditioning packet size make STA occur the situation of the GTIM message that the grouping of missing reception self place is corresponding, and the packet number in the reception data-indication message be namely currently received is greater than the packet number of self place grouping;

So, in these cases, during reception data-indication message corresponding to STA each group of can only wait for that AP sends according to packet number order again, receive the reception data-indication message that the grouping of self place is corresponding, so, after the reception data-indication message of the grouping correspondence of STA between the grouping of self place of current reception, the (packet count-go to self place to divide into groups packet number) the individual reception data-indication message receiving that AP sends, again because AP carries each group of corresponding reception data-indication message by Beacon frame to send, so, STA only needs to wait for that ((packet count-go the packet number of packet number+self place grouping obtained) * Beacon cycle) receives the reception data-indication message of AP transmission afterwards,

Such as, packet count is 63, the packet number of self place grouping is 5, the GTIM message of the reception data-indication message be currently received to be packet number the be grouping correspondence of 6, STA receives the GTIM message that AP sends after the time in 62 Beacon cycles of dormancy, just can obtain reception data-indication message corresponding to self place grouping;

Step 805: when the first stand-by period then, receive the reception data-indication message that sends of AP, the reception data-indication message of this reception is the reception data-indication message that self place STA divides into groups;

Step 806:STA obtains self data indication information to be received from the reception data-indication message that self place STA divides into groups, and judges self whether have data to need to receive according to this data indication information to be received,

If had, perform step 807;

If no, perform step 808;

Step 807: require that AP sends data, or, wait for that AP initiatively sends data, perform step 808;

Step 808:STA calculated for the second stand-by period according to grouping information, and after the second stand-by period reached, returned step 801;

Particularly, the second stand-by period can be obtained by the 3rd preset formula (packet count * Beacon cycle);

Wherein, the second stand-by period was STA receives between the time of the reception data-indication message of self place grouping and the time receiving the reception data-indication message of dividing into groups at self place again time interval in first time;

Below, the origin of the 3rd preset formula is simply introduced:

STA is after first time obtains the reception data-indication message of self place grouping, if again receive the reception data-indication message of self place grouping, just must wait for AP by self the reception data-indication message of all groupings be after grouping sent, when again sending the reception data-indication message of each grouping correspondence according to packet number, from the reception data-indication message again sent according to packet number, receive the reception data-indication message of self place grouping, so need to wait for that the time in (packet count * Beacon cycle) could receive the reception data-indication message of self place grouping again,

Now illustrate how step 801-807 realizes, as shown in Figure 8:

For Figure 15, can obtain from the reception data-indication message on the left side, packet size is 32, namely often group has 32 STA, packet count is 63, GTIM 0 is the reception data-indication message of packet number corresponding to 0, and GTIM 1 is the reception data-indication message of packet number corresponding to 1.Here, suppose that the AID of STA is 50, then according to the grouping information received, 1 is obtained downwards after also rounding 50 divided by 32, namely STA should receive the reception data-indication message that packet number is 1 correspondence, namely GTIM 1 is received, and the reception data-indication message of to be packet number the be grouping correspondence of 0 of current reception, i.e. GTIM 0, so, it is the rule sending reception data-indication message corresponding to each grouping by packet number order according to AP, as long as STA waits for Beacon cycle time, namely the next reception data-indication message receiving data-indication message and just can obtain dividing into groups at self place is received, i.e. GTIM 1, in grouping 1 entrained by GTIM 1, the information to be transmitted of each STA can be known, the Bit of AID 50 correspondence is 0, namely this STA corresponding to AID 50 does not have data to need to receive, wait for 63 Beacon message afterwards, receive the reception data-indication message that self place is next time corresponding again, during this period of time, STA can enter power down mode, thus saves energy consumption.

In addition, it should be noted that, when larger change occurs the load (number of the STA associated by AP) in network, dynamic conditioning can also be carried out to the packet size of STA.Such as, when the STA associated with AP gets more and more, but require that the packet count of STA is constant to ensure that STA can receive data-message to be received in time, so, just can adjust the packet size of STA, increase the quantity of STA in each grouping.So, directly when sending GTIM message next time, new packet size is set to and receives in data-indication message, receive the corresponding increase of data indication information to be received of STA entrained in data-indication message simultaneously, namely increase the data indication information to be received of the STA newly added in STA grouping.STA is when receiving reception data-indication message, first according to grouping information wherein, which calculate the to be received data corresponding with it to send in reception data-indication message, at the end of the stand-by period of correspondence, receive the reception data-indication message that AP sends, the data-message to be received of self can be obtained.

But, because the grouping of STA adjusts, the first round after grouping adjustment, part STA may be caused promptly and accurately cannot to receive the data indication information to be received of self, as, it is in the grouping of 1 that STA33 was originally in packet number, packet size after dynamic conditioning is 33, then this STA33 has just been divided into packet number is in the grouping of 0, so, STA33 just cannot obtain the data to be transmitted message of self in reception data-indication message GTIM 1, STA can adjust the reception data-indication message that oneself should receive in time according to new grouping information, ensure once accurately to receive corresponding reception data-indication message upper.

Generally, adjusting frequency of grouping information is lower, can not receive the data to be transmitted information generation interference of self to STA.

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought: in the present embodiment, STA is by calculating the stand-by period, make STA need not go to receive the reception data-indication message that sends of AP at every turn, only need after reaching the stand-by period, the reception data-indication message receiving current AP transmission can obtain the reception data-indication message of self place STA grouping, improve the efficiency that STA receives data-indication message, owing to dormancy can be entered within the stand-by period, thus save the energy consumption of STA.

Embodiment 9

See Figure 16, a kind of method obtaining data indication information to be received, the executive agent of the method comprises terminal equipment STA, specifically comprises the steps:

The expansion that step 901:STA receives AP transmission receives data-indication message and auxiliary Indication message, wherein, expansion receives data-indication message and comprises the data indication information to be received of STA, grouping information and interval information, gap count information in STA grouping, and auxiliary Indication message comprises grouping information, interval information and the gap count information that current STA divides into groups;

Wherein, described grouping information comprises: one or more in the group character hyte information in packet count, packet number, packet size and association identification, the described auxiliary Indication message number sent between the reception data-indication message of adjacent two device packets of described interval information instruction, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message;

In practical operation, what STA received is Beacon (beacon) frame comprising growth data Indication message or auxiliary Indication message;

Step 902:STA obtains gap count information from Beacon frame;

According to the gap count information obtained, step 903:STA judges whether the Beacon frame of current reception carries expansion and receive data-indication message, is perform step 904, otherwise performs step 907;

Particularly, STA judges whether gap count information is 0, if be 0, then the expansion that the Beacon frame be currently received comprises STA grouping receives data-indication message, if be not 0, the expansion that the Beacon frame be currently received does not comprise STA grouping receives data-indication message; Also can be that gap count information represent Beacon equal to interval information frame comprises the expansion that STA divides into groups and receives data-indication message, otherwise represent that the expansion that Beacon frame does not comprise STA grouping receives data-indication message;

Step 904:STA obtains STA grouping information from the Beacon frame be currently received;

According to the grouping information obtained, step 905:STA judges whether the expansion reception data-indication message that current Beacon frame comprises is that the expansion that self place STA divides into groups receives data-indication message,

If so, then step 908 is performed;

If not, then perform step 906;

Particularly, whether according to the grouping information obtained, STA judges that the expansion of current reception receives data-indication message is that the expansion that self place STA divides into groups receives data-indication message, comprising:

Step 905-1:STA obtains the packet number that self place STA divides into groups;

Specifically see the description in the step 703-1 of embodiment 7.

Step 905-2:STA judges that whether the packet number that self place STA divides into groups is consistent with the packet number in the grouping information obtained,

If consistent, then it is the reception data-indication message that self place STA divides into groups that the expansion of current reception receives data-indication message;

If inconsistent, then it is not the reception data-indication message that self place STA divides into groups that the expansion of current reception receives data-indication message;

The packet number that step 906:STA divides into groups according to the interval information in the Beacon frame be currently received, gap count information, grouping information and self place calculates according to the first principle the time that the expansion receiving the grouping of self place receives data-indication message, be designated as the first stand-by period, and battery saving mode is entered within the first stand-by period, do not receive the Beacon frame that AP sends, to save energy consumption, perform step 908;

Particularly, the size of the packet number divided into groups in the packet number in the grouping information that STA contrast obtains and self place,

If the packet number in the grouping information obtained is less than the packet number of self place grouping, then the 4th preset formula (((GTIM interval adds 1) * (packet number of the packet number-acquisition of self place grouping)) * Beacon cycle) is adopted to calculate for the first stand-by period;

Below, the origin of the 4th preset formula is introduced:

When gap count is 0, can know, the current reception of STA be exactly carry expansion to receive the Beacon frame of data-indication message, and what carry is that the expansion of the packet number correspondence grouping obtained receives data-indication message.In this present embodiment, AP is after the Beacon frame of expansion reception data-indication message is carried in transmission one, the Beacon frame of the auxiliary Indication message of interval information institute identified number will be sent, then just can send the next one and carry the Beacon frame that expansion receives data-indication message, so, STA is when the first stand-by period of calculating, the time shared by Beacon frame of the basis of the first preset formula in embodiment 8 being carried the auxiliary Indication message sent between the Beacon frame of expansion reception data-indication message by two is counted in, therefore, STA is after dormancy (((GTIM interval adds 1) * (packet number of the packet number-acquisition of self place grouping)) the * Beacon cycle) time, just can receive the expansion GTIM message of self place grouping,

If the grouping in the grouping information obtained equals the packet number of self place grouping, then the expansion of self place grouping that what the Beacon frame of current reception carried is exactly receives data-indication message, and the first stand-by period was 0;

If the grouping in the grouping information obtained is greater than the packet number of self place grouping, then the 5th preset formula (((GTIM interval adds 1) * (packet number of packet count-acquisition adds the packet number of self place grouping)) * Beacon cycle) is adopted to calculate for the first stand-by period;

Below, the origin of the 5th preset formula is introduced:

When gap count is 0, can know, in STA current reception Beacon frame, carry reception data-indication message, and carry be obtain packet number correspondence grouping reception data-indication message.In this transmission embodiment, AP is after the Beacon frame of expansion reception data-indication message is carried in transmission one, the Beacon frame of the auxiliary Indication message of interval information institute identified number will be sent, then just can send the next one and carry the Beacon frame that expansion receives data-indication message, so, STA is when the first stand-by period of calculating, the time shared by Beacon frame of the basis of the second preset formula in embodiment 8 being carried the auxiliary Indication message sent between the Beacon frame of expansion reception data-indication message by two is counted in, therefore, STA is after dormancy (((GTIM interval adds 1) * (packet number of packet count-acquisition adds the packet number of self place grouping)) the * Beacon cycle) time, just can receive the expansion GTIM message of self place grouping,

The packet number that step 907:STA divides into groups according to the interval information in the Beacon frame be currently received, gap count information, grouping information and self place calculates according to the second principle the time that the expansion receiving the grouping of self place receives data-indication message, be designated as the first stand-by period, and battery saving mode is entered within the first stand-by period, do not receive the expansion Beacon frame that AP sends, to save energy consumption, perform step 908;

If the packet number in the grouping information obtained is not more than the packet number of self place grouping, then the 6th preset formula (((packet number of the packet number-acquisition of self place grouping) * (interval information adds 1) adds gap count information) * Beacon cycle) is adopted to calculate for the first stand-by period;

Below, the origin of the 6th preset formula is simply introduced:

When gap count is not 0, can know, the current reception of STA be the Beacon frame of auxiliary Indication message, receive the Beacon frame of data-indication message next time by sending expansion corresponding to the packet number of carrying acquisition.When calculating the 6th preset formula, the Beacon frame of the auxiliary Indication message be currently received on the basis of the 4th preset formula is worthwhile and receive institute's interlude between Beacon frame that expansion corresponding to the packet number of carrying the grouping of self place receive data-indication message, therefore, STA is after dormancy (((packet number of the packet number-acquisition of self place grouping) * (interval information adds 1) adds gap count information) the * Beacon cycle) time, just can receive the Beacon frame that the expansion of carrying the grouping of self place receives data-indication message;

If the packet number in the grouping information obtained is greater than the packet number of self place grouping, then adopt the 7th preset formula (((packet count-(packet number of packet number-self place grouping of acquisition)) * (interval information adds 1) adds gap count information)) the * Beacon cycle) calculated for the first stand-by period;

Below, the origin of the 7th preset formula is simply introduced:

When gap count is not 0, can know, the current reception of STA be the Beacon frame of auxiliary Indication message, receive the Beacon frame of data-indication message next time by sending expansion corresponding to the packet number of carrying acquisition.When calculating the 7th preset formula, the Beacon frame of the auxiliary Indication message be currently received on the basis of the 5th preset formula is worthwhile and receive institute's interlude between Beacon frame that expansion corresponding to the packet number of carrying the grouping of self place receive data-indication message, therefore, STA is in dormancy (((packet count-(packet number of packet number-self place grouping of acquisition)) * (interval information adds 1) adds gap count information)) the * Beacon cycle) after the time, just can receive the Beacon frame that the expansion of carrying the grouping of self place receives data-indication message,

It should be noted that, step 907 is execution after then step 906 not, and step 906 and 907 is the steps performed in different situations.

Step 908: when the first stand-by period then, receive AP and send Beacon frame, in the Beacon frame of this reception, carry the expansion reception data-indication message that the grouping of self place is corresponding;

Step 909:STA receives data-indication message from the expansion that the grouping of self place is corresponding the reception data indication information obtaining self, receives data indication information judge self whether have data to need to receive according to this expansion,

If had, perform step 910;

If no, perform step 911;

Such as, expansion receives the Bitmap of the STA data indication information to be received that data-indication message is carried as shown in Figure 2, and the value of the Bitmap of AID 24 correspondence is 1, and this illustrates that this STA has data to need to receive.

Step 910: require that AP sends data, or, wait for that AP initiatively sends data, perform step 911;

Step 911:STA calculated for the second stand-by period, and after the second stand-by period reached, returned step 901;

Particularly, the second stand-by period can be obtained by the 8th preset formula (packet count * (GTIM spacing value adds 1) * Beacon cycle);

The present embodiment carries expansion continuous print two and receives the Beacon frame midfeather of the data-indication message Beacon frame of multiple auxiliary Indication message, therefore, when the second stand-by period of calculating, the time that the Beacon frame basis of the 3rd preset formula in embodiment 8 being counted middle multiple auxiliary Indication message takies;

Now illustrate how step 901-911 realizes, as follows:

Interval information is obtained in the Beacon frame be currently received, gap count information and grouping information GTIMInterval=5, GTIM Count=4, GTIM Period=126, GTIM Size=16, GTIM Number=9, represent respectively every the Beacon of 5 auxiliary Indication messages send one carry expansion receive data-indication message to Beacon frame, distance sends the Beacon that the Beacon carrying expansion reception data-indication message also wants 4 the auxiliary Indication messages in interval next time, have 126 groupings, often organize 16 STA, what be about to transmission is carry the Beacon frame that packet number is the expansion reception data-indication message of the grouping of 9 next time,

Here, suppose that the AID of STA is 1, then according to the grouping information received, 0 is obtained divided by 16 after rounding by 1, namely STA should receive the expansion reception data-indication message that packet number is 0 correspondence, namely receive expansion and receive data-indication message GTIM 0, and from the grouping information the Beacon frame of current reception and interval information, gap count information can be known, what be currently received is the Beacon frame of an auxiliary Indication message, and distance sends the Beacon frame that the Beacon frame carrying expansion expansion reception data-indication message also wants 4 the auxiliary Indication messages in interval next time, what be about to transmission is carry the Beacon frame that packet number is the expansion reception data-indication message of the grouping of 9 next time, so, can be calculated by above-mentioned 6th preset formula, STA is at 706 Beacon week after dates, the expansion that can receive the grouping of self place receives data-indication message, and within these 706 Beacon cycles, STA can enter battery saving mode, thus saving energy consumption, the expansion that STA receives at 706 Beacon week after dates receives data-indication message GTIM 0, as in Fig. 8 by shown in upper figure, STA receives data-indication message GTIM 0 according to this expansion, can know that the Bit value of AID 1 correspondence is 0, then do not have data to be transmitted between AP and this STA, therefore STA entered for the 4th stand-by period, until the 4th stand-by period then, the expansion again receiving the grouping of self place receives data-indication message.

The beneficial effect that the technical scheme that the present embodiment adopts reaches is the same with the beneficial effect that embodiment 8 reaches, in addition, the embodiment of the present invention is after the expansion often receiving a STA grouping receives data-indication message, after just receiving a gap count information value auxiliary indication information, receive the expansion reception data-indication message that next STA divides into groups again, thus strengthen the interval time that STA receives expansion reception data-indication message, be more suitable for and the application scenarios of low data bulk very insensitive to communication delay, and be more conducive to STA power saving.

Embodiment 10

See Figure 17, a kind of method obtaining data indication information to be received, the executive agent of the method comprises terminal equipment STA, specifically comprises the steps:

Steps A 01:STA receives carrying of AP transmission and receives growth data Indication message and auxiliary Indication message;

Wherein, described grouping information comprises: one or more in the group character hyte information in packet count, packet number, packet size and association identification;

Auxiliary Indication message comprises grouping information, interval information and gap count information; Particularly, described interval information is indicated to the described auxiliary Indication message number sent between the reception data-indication message of next round transmitting apparatus grouping; Described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message;

Steps A 02:STA obtains gap count information from Beacon frame;

According to the gap count information obtained, steps A 03:STA judges whether the Beacon frame of current reception carries expansion and receive data-indication message, is perform steps A 04, otherwise performs steps A 07;

When in the present embodiment, this gap count information GTIM Count upwards counts from 0, until gap count GTIM Count is equal with the value of GTIM Interval, then the method for the judgement described in this step is:

STA judges that whether gap count information GTIM Count is equal with the value of GTIM Interval, if equal, the expansion that the Beacon frame be then currently received comprises STA grouping receives data-indication message, if unequal, the expansion that the Beacon frame be currently received does not comprise STA grouping receives data-indication message;

When this gap count GTIM Count downward counting from interval information GTIM Interval in the present embodiment, until gap count GTIM Count position 0, then the method for the judgement described in this step is:

STA judges whether gap count information GTIM Count is 0, if be 0, the expansion that the Beacon frame be then currently received comprises STA grouping receives data-indication message, if be not 0, the expansion that the Beacon frame be currently received does not comprise STA grouping receives data-indication message;

The expansion that steps A 04:STA obtains STA grouping from the Beacon frame be currently received receives data-indication message;

Whether steps A 05:STA judges that the expansion of current acquisition receives data-indication message is that the expansion that self place STA divides into groups receives data-indication message,

If so, then steps A 08 is performed;

If not, then perform steps A 06;

The judgement transmission of this step is the same with the method described in step 905 in embodiment 9, just repeats no more herein.

The packet number that steps A 06:STA divides into groups according to the interval information in the Beacon frame be currently received, gap count information, grouping information and self place calculates according to the first principle the time that the expansion receiving the grouping of self place receives data-indication message, be designated as the first stand-by period, and battery saving mode is entered within the first stand-by period, do not receive the Beacon frame that AP sends, to save energy consumption, perform steps A 08;

If the packet number in the grouping information obtained is less than the packet number of self place grouping, then the 9th preset formula ((packet number of the packet number-acquisition of self place grouping) * Beacon cycle) is adopted to calculate for the first stand-by period;

Below, the origin of the 9th preset formula is introduced:

When in the present embodiment, this gap count GTIM Count upwards counts from 0, and gap count GTIM Count equal with GTIM Interval time, or, when the downward counting from count information GTIM Interval of this gap count GTIMCount in the present embodiment, and GTIM Count is when being 0, STA is in the indication information broadcasting phase of AP, within this broadcasting phase, continuous print sends and carries the Beacon frame that expansion receives data-indication message by AP, and the current reception of STA is exactly carry the Beacon frame that expansion receives data-indication message, and what carry is that the expansion that the packet number correspondence obtained is divided into groups receives data-indication message, packet number due to self place STA grouping is less than the packet number of current acquisition, namely the expansion that self place STA divides into groups receives data-indication message and sends after receiving data-indication message in the expansion be currently received, so, as long as the Beacon frame that SAT reception (packet number of the packet number-acquisition of self place grouping) is after this individual, therefrom can obtain the expansion reception data-indication message that self place STA divides into groups, so STA is after dormancy ((packet number of the packet number-acquisition of self place grouping) the * Beacon cycle) time, and the expansion that just can receive the grouping of self place receives data-indication message,

If the packet number in the grouping information obtained equals the packet number of self place grouping, then the expansion of self place grouping that what the Beacon frame of current reception carried is exactly receives data-indication message, and the first stand-by period was 0;

If the packet number in the grouping information obtained is greater than the packet number of self place grouping, then adopt the tenth preset formula ((packet number of packet count-acquisition adds interval information) adds (packet number of acquisition adds 1)) the * Beacon cycle) calculated for the first stand-by period;

Below, the origin of the tenth preset formula is introduced:

When in the present embodiment, this gap count GTIM Count upwards counts from 0, and gap count GTIM Count equal with GTIM Interval time, or, when the downward counting from count information GTIM Interval of this gap count GTIMCount in the present embodiment, and GTIM Count is when being 0, STA is in the indication information broadcasting phase of AP, within this broadcasting phase, continuous print sends and carries the Beacon frame that expansion receives data-indication message by AP, and the current reception of STA is exactly carry the Beacon frame that expansion receives data-indication message, and what carry is that the expansion that the packet number correspondence obtained is divided into groups receives data-indication message, packet number due to self place STA grouping is greater than the packet number of current acquisition, namely the expansion that self place STA divides into groups receives data-indication message and sent before the expansion be currently received receives data-indication message, STA misses due to factors such as network are unstable or dormancy time is long, so STA needs to go the expansion receiving self place STA grouping to receive data-indication message in the next carousel cycle of AP, so, SAT just can enter next carousel cycle at ((packet number of packet count-acquisition) adds interval information) * Beacon week after date, therefore, STA is in wait ((packet number of packet count-acquisition adds interval information) adds (packet number of acquisition adds 1)) * Beacon cycle) after the time, just can receive the expansion GTIM message of self place grouping,

The packet number that steps A 07:STA divides into groups according to the interval information in the Beacon be currently received, gap count information, grouping information and self place calculates according to the second principle the time that the expansion receiving the grouping of self place receives data-indication message, be designated as the first stand-by period, and battery saving mode is entered within the first stand-by period, do not receive the expansion Beacon frame that AP sends, to save energy consumption, perform steps A 08;

When in the present embodiment, this gap count GTIM Count upwards counts from 0, and gap count GTIM Count and GTIM Interval unequal time, by the 11 preset formula (((interval information-gap count information) add self place grouping packet number) the * Beacon cycle) calculated for the first stand-by period.

Particularly, when in the present embodiment, this gap count GTIM Count upwards counts from 0, and gap count GTIM Count and GTIM Interval unequal time, STA be in AP without in the indication information broadcasting phase, within this broadcasting phase, continuous print is sent GTIM Interval and does not carry the Beacon frame that expansion receives data-indication message by AP, from current reception do not carry expansion receive data-indication message Beacon frame gap count information GTIM Count and interval information GTIM Interval can know, this will terminate through (interval information-gap count information) * Beacon week after date without the indication information phase of broadcasting, enter indication information and broadcast the phase, within this indication information broadcasting phase, AP sends the Beacon frame carrying the expansion reception data-indication message that each STA divides into groups continuously, and STA just can receive self place expansion reception data-indication message within this Indication message broadcasting phase, again due to, within this indication information broadcasting phase, AP sends according to the packet number order of STA grouping or inverted order the expansion that each STA divides into groups to receive data-indication message, so within this indication information broadcasting phase, STA does not need to receive each Beacon frame carrying expansion reception data-indication message, only need within this indication information broadcasting phase, wait for (after when packet number * Beacon cycle that self place STA divides into groups, the expansion that just can receive the grouping of self place receives data-indication message,

From the above mentioned, STA is after receiving the Beacon frame not containing expansion reception data-indication message, after when waiting for altogether (packet number that (interval information-gap count information) adds the grouping of self place) * Beacon cycle, just can receive the expansion reception data-indication message of self place grouping.

When this gap count GTIM Count downward counting from count information GTIM Interval in the present embodiment, and GTIM Count is not when being 0, obtained for the first stand-by period by the 12 preset formula (gap count adds the packet number of self place grouping) * Beacon computation of Period;

Wherein, 12 preset formula is identical with the principle of the first preset formula, just, when GTIM Count counts downwards from count information GTIM Interval, not carrying expansion receive after data-indication message dislikes Beacon frame without receiving in the indication information broadcasting phase, just finish to broadcast the phase without indication information through the GTIM Count*Beacon cycle, and enter the indication information broadcasting phase, so when the first stand-by period of calculating, cause computing formula slightly different due to the difference of counting mode, but principle is the same, just repeats no more herein.

Steps A 08: when the first stand-by period then, receive AP and send Beacon frame, in the Beacon frame of this reception, carry the expansion reception data-indication message that the grouping of self place is corresponding;

Steps A 09:STA receives data-indication message from the expansion that the grouping of self place is corresponding the reception data indication information obtaining self, receives data indication information judge self whether have data to need to receive according to this expansion,

If had, perform steps A 10;

If no, perform steps A 11;

Steps A 10: require that AP sends data, or, wait for that AP initiatively sends data, perform steps A 11;

Steps A 11:STA calculated for the second stand-by period, and after the second stand-by period reached, returned step 901;

Particularly, the second stand-by period can be obtained by the 13 preset formula ((packet count adds GTIM spacing value) * Beacon cycle);

Particularly, AP is according to ((packet count adds gap count information) * Beacon cycle)) expansion of each STA grouping of the cycle carousel of length receives data-indication message.So the expansion that STA receives the grouping of self place in first time received after data-indication message every ((packet count adds gap count information) * Beacon cycle)) after again will receive the grouping of self place expansion receive data-indication message.

The beneficial effect that the technical scheme that the present embodiment adopts reaches is the same with the beneficial effect that embodiment 8 reaches, in addition, the present embodiment is after the expansion receiving all STA grouping receives data-indication message, just receive a gap count information value auxiliary indication information, the expansion receiving the STA grouping of next round again receives data-indication message, thus strengthen the interval time that STA receives expansion reception data-indication message, be more suitable for and the application scenarios of low data bulk very insensitive to communication delay, and be more conducive to STA power saving.

Embodiment 11

See Figure 18 a, a kind of device obtaining data indication information to be received, this device is specifically corresponding with supporting the terminal equipment of 802.11 agreements, comprising: receiver module S01, judge module S02, the first Executive Module S03 and the second Executive Module S04;

Receiver module S01, for receiving the reception data-indication message of a device packets, receive data indication information to be received and grouping information that data-indication message comprises terminal equipment in device packets, in data indication information indicating equipment grouping to be received, whether each equipment has data to be received;

Wherein, grouping information comprises packet number and the packet count of current device grouping; Or,

Grouping information comprises packet number, packet count and the packet size that current device divides into groups; Or,

Judge module S02, receives for judging according to grouping information the reception data-indication message whether data-indication message is this group device packets;

First Executive Module S03, for when the judged result of judge module S02 is for being, performs DRP data reception process according to data indication information to be received;

Second Executive Module S04, for when the judged result of judge module S02 is not for being, the stand-by period needed for the reception data-indication message receiving this group device packets is calculated according to grouping information, and when the stand-by period arrives, the reception data-indication message of receiving equipment grouping again.

See Figure 18 b, a kind of device obtaining data indication information to be received, this device is specifically corresponding with supporting the terminal equipment of 802.11 agreements, comprising: receiver module D01, the first judge module D02, the first Executive Module D03, the second judge module D04, the second Executive Module D05 and the 3rd Executive Module D06;

Receiver module D01, for receipt message, message comprises grouping information, gap count information and interval information;

First judge module D02, for judging that the message that receiver module D01 receives is the reception data-indication message of device packets or auxiliary Indication message;

First Executive Module D03, for when the judged result of the first judge module D02 is for auxiliary Indication message, calculate according to grouping information, interval information and gap count information in auxiliary Indication message the stand-by period needed for reception data-indication message receiving this group equipment;

Second judge module D04, the judged result for the first judge module D02 is again when receiving data-indication message, judges that whether reception data-indication message is the reception data-indication message of the device packets at this terminal equipment place according to grouping information;

Second Executive Module D05, for when the judged result of the second judge module D04 is the reception data-indication message of the device packets at this terminal equipment place, the data indication information to be received according to receiving in data-indication message performs DRP data reception process;

3rd Executive Module D06, for when the judged result of the second judge module D04 is the reception data-indication message of the device packets not being this terminal equipment place, the stand-by period needed for reception data-indication message of the device packets receiving this terminal equipment place is calculated according to grouping information, interval information and gap count information, and when the stand-by period arrives, the reception data-indication message of receiving equipment grouping again.

Wherein, the auxiliary Indication message number sent between the reception data-indication message of adjacent two device packets of interval information instruction, gap count information changes between interval information value 0, and instruction current message is for receiving data-indication message or auxiliary Indication message; Or

Interval information is indicated to the auxiliary Indication message number sent between the reception data-indication message of next round transmitting apparatus grouping, gap count information changes between interval information value 0, and instruction current message is for receiving data-indication message or auxiliary Indication message.

The beneficial effect that the embodiment of the present invention is brought is: in the present embodiment, STA is by calculating the stand-by period, make STA need not go to receive the reception data-indication message that sends of AP at every turn, only need after reaching the stand-by period, the reception data-indication message receiving current AP transmission can obtain the reception data-indication message of self place STA grouping, improve the efficiency that STA receives data-indication message, due to can dormancy be entered within the stand-by period, thus save the energy consumption of STA, in addition, STA also can receive auxiliary Indication message in the process of reception data-indication message receiving STA grouping, this auxiliary Indication message makes the stand-by period of STA when receiving the reception data-indication message of self place grouping elongated, be more suitable for and the application scenarios of low data bulk very insensitive to communication delay, and be more conducive to STA power saving.

Embodiment 12

See Figure 19, a kind of device obtaining data indication information to be received, this device is concrete corresponding with subscriber equipment, comprising:

Receiver module B01, acquisition module B02, judge module B03, the first Executive Module B04, the second Executive Module B04 and computing module B06, introduces the concrete function of each module below in detail:

Receiver module B01, for the reception data-indication message of receiving equipment grouping, receive data indication information to be received and grouping information that data-indication message comprises terminal equipment in device packets, in data indication information indicating equipment grouping to be received, whether each equipment has data to be received;

Acquisition module B02, for obtaining grouping information from reception data-indication message;

Judge module B03, receives for judging according to grouping information the reception data-indication message whether data-indication message is self place device packets,

First Executive Module B04, for calculating for the first stand-by period according to grouping information, and after the first stand-by period arrived, returns receiver module;

Second Executive Module B05, for obtaining the reception data indication information of self according to reception data-indication message;

Computing module B06, for calculating for the second stand-by period according to grouping information, and after the second stand-by period reached, returns receiver module.

Particularly, judge module B02 comprises:

Acquiring unit B021, for obtaining the packet number of self place device packets;

Judging unit B022, whether consistent with the packet number in grouping information for judging the packet number of self place device packets, if unanimously, then receive the reception data-indication message that data-indication message is self place device packets; If inconsistent, then receive the reception data-indication message that data-indication message is not self place device packets.

First Executive Module B04 comprises:

First acquiring unit B041, for obtaining the packet number of self place device packets;

First judging unit B042, for judging the magnitude relationship of the packet number in the packet number of self place device packets and grouping information;

First computing unit B043, during for being less than the packet number of self place device packets when the packet number in grouping information, packet number according to the packet number in grouping information and self place device packets calculated for the first stand-by period according to the first preset formula, and the first preset formula is: (packet number-packet number of self place device packets) the * beacon frame cycle;

Second computing unit B044, during for being greater than the packet number of self place device packets when the packet number in grouping information, packet number according to the packet number in grouping information, packet count and self place device packets calculated for the first stand-by period according to the second preset formula, and the second preset formula is: (packet count-packet number adds the packet number of self place device packets) * beacon frame cycle.

Computing module B06, specifically for calculating for the second stand-by period according to the packet count in grouping information according to the 3rd preset formula, the 3rd preset formula is: the packet count * beacon frame cycle.

When reception data-indication message is expanded packet transmission, receiver module B01, also for receiving auxiliary Indication message between the reception data-indication message receiving neighbouring device grouping;

Auxiliary Indication message comprises interval information, gap count information, grouping information;

The auxiliary Indication message number sent between the reception data-indication message of adjacent two device packets of interval information instruction, gap count information changes between interval information value 0, and instruction current message is for receiving data-indication message or auxiliary Indication message;

Correspondingly, the first Executive Module B04 comprises:

Second acquisition unit B04A1, for obtaining interval information, gap count information in the message from current reception;

3rd acquiring unit B04A2, for obtaining the packet number of self place device packets;

Second judging unit B04A3, for judging whether the gap count in gap count information is zero;

3rd judging unit B04A4, when the judged result of the second judging unit B04A3 is zero, is the packet number being less than or greater than self place device packets by the packet number judged in grouping information;

First performance element B04A5, then when the packet number in grouping information is less than the packet number of self place device packets, calculated for the first stand-by period according to the packet number of the packet number in grouping information, self place device packets and interval information, gap count information according to the 4th preset formula, the 4th preset formula is: ((interval information adds 1) * (packet number-packet number of self place grouping)) the * beacon frame cycle;

Second performance element B04A6, during for being greater than the packet number of self place device packets when the packet number in grouping information, calculated for the first stand-by period according to the interval message in the packet number of the packet number in grouping information, packet count, self place device packets and extended message according to the 5th preset formula, the 5th preset formula is: ((interval information adds 1) * (packet count-packet number adds the packet number of self place device packets)) * beacon frame cycle;

4th judging unit B04A7, when the judged result of the second judging unit B04A3 is non-vanishing, for judging the magnitude relationship of the packet number of packet number in grouping information and self place device packets;

3rd performance element B04A8, during for being not more than the packet number of self place device packets when the packet number in grouping information, calculated for the first stand-by period according to the interval information in the packet number of the packet number in grouping information, self place device packets and interval information, gap count information according to the 6th preset formula, the 6th preset formula is: ((packet number-packet number of self place device packets) * (interval information adds 1) adds expansion count information) * beacon frame cycle;

4th performance element B04A9, when being greater than the packet number of self place device packets for the packet number in grouping information, calculated for the first stand-by period according to the packet number of the packet number in grouping information, packet count, self place device packets and interval information, gap count information according to the 7th preset formula, the 7th preset formula is: ((packet count-(packet number of packet number-self place device packets)) * (interval information adds 1) adds gap count information)) the * beacon frame cycle.

Computing unit B06, also specifically for calculating for the second stand-by period according to the interval information in the packet count in grouping information, interval information, gap count information according to the 8th preset formula, the 8th preset formula is: packet count * (interval information adds 1) the * beacon frame cycle.

When reception data-indication message is expanded packet transmission, receiver module B01, also for receiving auxiliary Indication message after the reception data-indication message receiving armamentarium grouping;

Correspondingly, the first Executive Module B04 comprises:

Second judging unit B04A3, for judging whether gap count information is zero;

5th performance element B04B1, during for being less than the packet number of self place device packets described when the packet number in described grouping information, calculated for the first stand-by period according to the packet number of the packet number in described grouping information, self place device packets described and described interval information, gap count information according to the 9th preset formula, described 9th preset formula is: (packet number-packet number of self place grouping) the * beacon frame cycle;

6th performance element B04B2, during for being greater than the packet number of self place device packets described when the packet number in described grouping information, calculated for the first stand-by period according to the interval message in the packet number of the packet number in described grouping information, packet count, self place device packets described and described extended message according to the tenth preset formula, described tenth preset formula is: (packet number of packet count-acquisition adds interval information) adds (packet number of acquisition adds 1)) the * beacon frame cycle;

7th performance element B04B3, for when the judged result of described second judging unit is non-vanishing, calculated for the first stand-by period according to the packet number divided into groups in described interval information, gap count information and self place according to the 12 preset formula, described 12 preset formula is: (gap count adds the packet number of self place grouping) * beacon frame cycle.

Correspondingly, the first Executive Module B04 comprises:

Second acquisition unit B04A1, obtains interval information, gap count information for receiving in data-indication message from expansion;

5th judging unit B04C1, for judging that whether described gap count information is equal with described interval information;

3rd judging unit B04C2, when the judged result of described 5th judging unit B04C2 is equal, is the packet number being less than or greater than self place device packets described by the packet number judged in described grouping information;

8th performance element B04C3, for when the judged result of described 5th judging unit B04C2 is not identical, calculated for the first stand-by period according to the packet number divided into groups in described interval information, gap count information and self place according to the 11 preset formula, described 11 preset formula is: ((interval information-gap count information) adds the packet number of self place grouping) * beacon frame cycle.

Correspondingly, computing unit B06, specifically for calculating for the second stand-by period according to the interval information in the packet count in described grouping information, interval information, gap count information according to the 13 preset formula, described 13 preset formula is: (packet count adds interval information) * beacon frame cycle.

Wherein, acquiring unit B021, acquiring unit B021, the first acquiring unit B041 and the 3rd acquiring unit B04A2, specifically by the association identification of self divided by the packet size in grouping information, obtain the packet number of self place device packets; Or

Acquiring unit B021, the first acquiring unit B041 and the 3rd acquiring unit B04A2, obtain the packet number of self place device packets according to the group character position of the association identification of self; Or

Acquiring unit B021, the first acquiring unit B041 and the 3rd acquiring unit B04A2, obtain the packet number of self place device packets according to the group character self distributed.

The beneficial effect that the embodiment of the present invention is brought is: in the present embodiment, STA is by calculating the stand-by period, make STA need not go to receive the reception data-indication message that sends of AP at every turn, only need after reaching the stand-by period, the reception data-indication message receiving current AP transmission can obtain the reception data-indication message of self place STA grouping, improve the efficiency that STA receives data-indication message, owing to dormancy can be entered within the stand-by period, thus save the energy consumption of STA.

Embodiment 13

See Figure 20, a kind of system sending and obtain data indication information to be received, described system comprises the device C0 sending the data indication information to be received and device C1 obtaining data indication information to be received, in a particular application, the device C0 of this transmission data indication information to be received can be specifically AP, the device C1 obtaining data indication information to be received can be STA, and the present invention is to this and be not specifically limited, and introduces the concrete function of above-mentioned two kinds of devices below in detail:

The device C0 of transmitting and receiving data indication information comprises all modules described in embodiment 5, just repeats no more herein, and in addition, this device also comprises communication module, for carrying out data communication with the device C1 obtaining data indication information to be received;

The device C1 obtaining data indication information to be received comprises all modules described in embodiment 11, and just repeat no more, in addition, this device also comprises communication module herein, for carrying out data communication with the device C0 sending data indication information to be received.

By terminal equipment STA is divided into groups, send the realization of the technical scheme of the reception data-indication message of each device packets successively, the reception data-indication message message-length that each STA is divided into groups is controlled, improve the reliability of information transmission, by increasing the quantity of STA grouping, the information to be transmitted of a large amount of STA namely can be transmitted; In addition, receive the reception data-indication message of STA grouping, from receiving the grouping information obtaining STA grouping data-indication message, judge whether described reception data-indication message is the reception data-indication message that self place STA divides into groups, and if so, then from described reception data-indication message, obtains the data indication information to be received of self according to the grouping information obtained, if not, calculated for the first stand-by period, after the first stand-by period arrived, receive data-indication message; Afterwards, calculated for the second stand-by period, and after the second stand-by period arrived, receive the realization of data-indication message technical scheme, by obtaining rapidly the reception data-indication message of self place grouping the reception data-indication message that simply judges and just can divide into groups from each STA after waiting for the regular hour, and in the reception data-indication message of dividing into groups at self place, obtain the data indication information to be received of self.

If send according to packet number order from small to large when in above embodiment, without specified otherwise, the formula of relevant calculation time all supposes that AP sends the reception data-indication message of grouping, and the change of gap count information is from big to small, the reception data-indication message of in fact dividing into groups also can send according to packet number order from big to small, and the change of gap count information also can be from small to large, for this reason, relevant calculating formulas need make corresponding modify, to those skilled in the art, this corresponding amendment is apparent, does not describe in detail one by one here.

In above embodiment, the grouping of relevant STA grouping receives the next call of one that the expansion reception data-indication message of data-indication message and STA grouping is the reception data-indication message of STA grouping, its essential meaning is identical, all refer to the reception data-indication message corresponding to STA grouping, this reception data-indication message is used to indicate the data indication information to be received of STA in this STA grouping corresponding to reception data-indication message, and whether described data indication information to be received indicates terminal equipment in device packets corresponding to this reception data-indication message to have data to be received.

All or part of content in the technical scheme that above embodiment provides can be realized by software programming, and its software program is stored in the storage medium that can read, storage medium such as: the hard disk in computer, CD or floppy disk.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. notify a method for data indication information to be received, it is characterized in that, described method comprises:

Terminal equipment is divided into groups;

Send the reception data-indication message of each device packets, each reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets corresponding to this reception data-indication message, whether described data indication information to be received indicates terminal equipment in device packets corresponding to this reception data-indication message to have data to be received, and the reception data-indication message of described each device packets also comprises interval information and gap count information;

2. method according to claim 1, is characterized in that, is describedly divided into groups by terminal equipment, comprising:

Determine the span of the association identification of terminal equipment in the packet count of device packets and each device packets;

According to the span of the association identification of terminal equipment in the association identification of terminal equipment and described device packets, terminal equipment is divided into groups.

3. method according to claim 1, is characterized in that, is describedly divided into groups by terminal equipment, comprising:

Using the predetermined bit hyte in the association identification of terminal equipment as group character position;

According to the group character position in the association identification of terminal equipment, terminal equipment is divided into groups.

4. method according to claim 1, is characterized in that, is describedly divided into groups by terminal equipment, comprising:

For terminal equipment allocation packets mark;

According to described group character, terminal equipment is divided into groups.

5. method according to claim 1, is characterized in that, described grouping information comprises packet number and the packet count of current device grouping; Or

Described grouping information comprises packet number, packet count and the packet size that current device divides into groups; Or

Described grouping information comprises the packet number of current device grouping, the group character hyte information in association identification.

6. notify a device for data indication information to be received, it is characterized in that, described device comprises: grouping module and sending module;

Described grouping module, for dividing into groups terminal equipment;

Described sending module, for sending the reception data-indication message of each device packets, each reception data-indication message comprises data indication information to be received and the grouping information of terminal equipment in device packets corresponding to this reception data-indication message, whether described data indication information to be received indicates terminal equipment in device packets corresponding to this reception data-indication message to have data to be received, and the reception data-indication message of described each device packets also comprises interval information and gap count information;

7. device according to claim 6, is characterized in that, described grouping module comprises:

Determining unit, for determining the span of the association identification of terminal equipment in the packet count of device packets and each device packets;

Grouped element, for dividing into groups terminal equipment according to the span of the association identification of terminal equipment in the association identification of terminal equipment and described device packets.

8. device according to claim 6, is characterized in that, described grouping module comprises:

Setting unit, for using the predetermined bit hyte in the association identification of terminal equipment as group character;

Grouped element, for dividing into groups terminal equipment according to the group character position in the association identification of terminal equipment.

9. device according to claim 6, is characterized in that, described grouping module comprises:

Allocation units, for being terminal equipment allocation packets mark;

Grouped element, for dividing into groups terminal equipment according to described group character.

10. device according to claim 6, is characterized in that, described grouping information comprises packet number and the packet count of current device grouping; Or

11. devices according to any one of claim 6 to 10, is characterized in that, describedly notify that the device of data indication information to be received is access point AP.

12. 1 kinds of terminal equipments obtain the method for data indication information to be received, it is characterized in that, described method comprises:

13. methods according to claim 12, is characterized in that, it is characterized in that, described grouping information comprises packet number and the packet count of current device grouping; Or,

Described grouping information comprises packet number, packet count and the packet size that current device divides into groups; Or,

The device of 14. 1 kinds of acquisition data indication information to be received, it is characterized in that, described device comprises: receiver module, judge module, the first Executive Module and the second Executive Module;

15. devices according to claim 14, is characterized in that, it is characterized in that, described grouping information comprises packet number and the packet count of current device grouping; Or,

16., according to claim 14 to the device described in 15 any one, is characterized in that, the device of described acquisition data indication information to be received is the terminal equipment of support 802.11 agreement.

17. 1 kinds of terminal equipments obtain the method for data indication information to be received, it is characterized in that, described method comprises:

18. methods according to claim 17, is characterized in that, described grouping information comprises packet number and the packet count of current device grouping; Or,

19. methods according to claim 17, it is characterized in that the described auxiliary Indication message number sent between the reception data-indication message of adjacent two device packets of described interval information instruction, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

20. methods according to claim 17, it is characterized in that, described interval information is indicated to the described auxiliary Indication message number sent between the reception data-indication message of next round transmitting apparatus grouping, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

The device of 21. 1 kinds of acquisition data indication information to be received, it is characterized in that, described device comprises: receiver module, the first judge module, the first Executive Module, the second judge module, the second Executive Module and the 3rd Executive Module;

22. devices according to claim 21, it is characterized in that, the described auxiliary Indication message number sent between the reception data-indication message of adjacent two device packets of described interval information instruction, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

23. devices according to claim 21, it is characterized in that, described interval information is indicated to the described auxiliary Indication message number sent between the reception data-indication message of next round transmitting apparatus grouping, described gap count information changes between described interval information value 0, and instruction current message is described reception data-indication message or described auxiliary Indication message.

24. devices according to any one of claim 21 to 23, it is characterized in that, the device of described acquisition data indication information to be received is the terminal equipment of support 802.11 agreement.