CN102740354A

CN102740354A - Method and device for informing and obtaining indication message of data to be received

Info

Publication number: CN102740354A
Application number: CN2011100955216A
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: 2012-10-17
Anticipated expiration: 2031-04-15
Also published as: CN102740354B

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 waiting to receive the data indication information

Technical field

The present invention relates to wireless communication field, particularly a kind of notice, obtain method and the device of waiting to receive the data indication information.

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 all obtaining using widely aspect WLAN structure and the wide area network access.At present, all be provided with the AP (Access Point, access point) of WiFi in many public arenas such as Airport lounges, coffee-houses.

After STA (Station supports the terminal equipment of 802.11 agreements) inserts the WiFi wireless network, at first carry out relatedly with AP, AP then is STA distribution AID (Association ID, association identification); Afterwards, AP periodically comprises the Beacon frame of TIM (Traffic Indication Message receives data-indication message) to the STA of association broadcasting, and what this TIM carried all STAs related with AP waits to receive the data indication information; Whether what STA then obtained self from the TIM that receives waits to receive the data indication information, and wait to receive the data indication information according to this and confirm self to have the data needs to receive.

Wherein, TIM waits to receive data indication information two large divisions by message header and STA and forms.Message header comprises information such as type of message and message-length; STA waits to receive the data indication information and is then specifically indicated by the Bit (bit) among the Bitmap (bitmap) of 1 to 251 byte length, and when the Bit value was 1, the STA that then this Bit is corresponding had data to need to receive; When the Bit value was 0, the STA free of data that then this Bit is corresponding needed to receive.

Can know by above-mentioned introduction; When the STA related with AP is more and more; What TIM just need carry increasing STA waits to receive the data indication information, and this will cause the length of TIM more and more longer, thereby and cause the TIM required time of transmission significantly increase, the appearance of the problems such as possibility rising of bust this; Especially under the scene of low speed transmissions, this problem can be more serious; In addition, can know again, when the length of the Bitmap among the TIM reaches 251 bytes by above-mentioned introduction; The waiting of the STA that TIM can carry receives the data indication information will reach maximum, promptly the maximum portabilities of TIM 2007 STAs related with AP wait to receive the data indication information, still; In intelligence instrument and sensing network, because the amount of communication data of STA is considerably less, so; Hope then during system design that AP can manage more STA; Accordingly, waiting to receive the data indication information maybe 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, the embodiment of the invention provides a kind of notice, has obtained method and the device of waiting to receive the data indication information, and said technical scheme is following:

A kind of notice waits to receive the method for data indication information, and said method comprises:

Terminal equipment is divided into groups;

Send the reception data-indication message of each device packets successively; Each receive data-indication message comprise this receptions data-indication message corresponding equipment divide into groups in terminal equipment wait to receive data indication information and grouping information, saidly wait to receive the indication of data indication information and should whether have data to wait to receive by the interior terminal equipment of reception data-indication message corresponding equipment grouping.

A kind of notice waits to receive the device of data indication information, and said device comprises: grouping module and sending module;

Said grouping module is used for terminal equipment is divided into groups;

Said sending module; Be used for sending successively the reception data-indication message of each device packets; Each receive data-indication message comprise this receptions data-indication message corresponding equipment divide into groups in terminal equipment wait to receive data indication information and grouping information, saidly wait to receive the indication of data indication information and should whether have data to wait to receive by the interior terminal equipment of reception data-indication message corresponding equipment grouping.

A kind of terminal equipment obtains the method for waiting to receive the data indication information, and said method comprises:

Receive the reception data-indication message of a device packets; What said reception data-indication message comprised terminal device in the said device packets waits to receive data indication information and grouping information, saidly waits to receive whether terminal device has data to wait to receive in the grouping of data indication information indicating equipment;

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

If then wait to receive the data indication information and carry out DRP data reception process according to said;

If not, required stand-by period of reception data-indication message of then calculating the device packets that receives this terminal equipment place, and when the said stand-by period arrives according to said grouping information, the receiving equipment reception data-indication message of dividing into groups once more.

A kind of device of waiting to receive the data indication information that obtains, said device comprises: receiver module, judge module, first Executive Module and second Executive Module;

Said receiver module; Be used to receive the reception data-indication message of a device packets; What said reception data-indication message comprised terminal equipment in the device packets waits to receive data indication information and grouping information, said wait to receive data indication information indicating equipment divide into groups in terminal equipment whether have data to wait to receive;

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

Said first Executive Module is used in the judged result of said judge module when being, waits to receive the data indication information and carries out DRP data reception process according to said;

Said second Executive Module; Be used in the judged result of said judge module when not being; Calculate the required stand-by period of reception data-indication message of the grouping that receives this terminal equipment place according to said grouping information; And when said stand-by period arrives, the receiving equipment reception data-indication message of dividing into groups once more.

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

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

If said auxiliary Indication message, the required stand-by period of reception data-indication message of calculating the device packets at this terminal equipment of reception place according to said grouping information, interval information and interval count information;

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

If the reception data-indication message of the device packets at this terminal equipment place receives the data indication information according to treating in the said reception data-indication message and carries out DRP data reception process;

If not the reception data-indication message of the device packets at this terminal equipment place; Calculate the required stand-by period of reception data-indication message of the device packets at this terminal equipment of reception place according to said grouping information, interval information and interval count information; And when said stand-by period arrives, the receiving equipment reception data-indication message of dividing into groups once more.

A kind of device of waiting to receive the data indication information that obtains, said device comprises: receiver module, first judge module, first Executive Module, second judge module, second Executive Module and the 3rd Executive Module;

Said receiver module is used to receive message, and said message comprises grouping information, interval count information and interval information;

Said first judge module is used to judge that the message that said receiver module receives is the reception data-indication message or the auxiliary Indication message of device packets;

Said first Executive Module; When being used for judged result at said first judge module and being said auxiliary Indication message, according to the grouping information in the said auxiliary Indication message, interval information and at interval count information calculate the required stand-by period of reception data-indication message that receives this group equipment;

Said second judge module; When the judged result that is used for again said first judge module is said reception data-indication message, judge that based on said grouping information whether said reception data-indication message is the reception data-indication message of the device packets at this terminal device place;

Said second Executive Module; Be used for during for the reception data-indication message of the device packets at this terminal device place, receiving the data indication information based on treating in the said reception data-indication message and carrying out DRP data reception process in the judged result of said second judge module;

Said the 3rd Executive Module; Be used in the judged result of said second judge module when not being the reception data-indication message of device packets at this terminal equipment place; Calculate the required stand-by period of reception data-indication message of the device packets at this terminal equipment of reception place according to said grouping information, interval information and interval count information; And when said stand-by period arrives, the receiving equipment reception data-indication message of dividing into groups once more.

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: through the realization of technique scheme; The reception data-indication message message-length that makes each STA divide into groups is controlled; Improved reliability of information transmission; Through increasing the quantity that STA divides into groups, promptly can transmit the information to be transmitted of a large amount of STA; And make equipment after the reception data-indication message that the first time, receiving equipment divided into groups; Calculate the stand-by period; And the reception data-indication message that receiving equipment divides into groups after the stand-by period arrives; Can obtain self and belong to the reception data-indication message of device packets, avoid each all troubles of the reception data-indication message of receiving equipment, save energy consumption.

Description of drawings

Fig. 1 is the method flow diagram that a kind of notice that the embodiment of the invention 1 provides waits to receive the data indication information;

Fig. 2 is a kind of method flow diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 2 provides;

Fig. 3 is the method flow diagram that a kind of notice that the embodiment of the invention 3 provides waits to receive the data indication information;

Fig. 4 is a kind of AID form sketch map that the embodiment of the invention 3 provides;

Fig. 5 is the form sketch map of a kind of TIM of providing of the embodiment of the invention 3;

A kind of form sketch map that receives data-indication message that Fig. 6 embodiment of the invention 3 provides;

Fig. 7 is a kind of form sketch map that receives data-indication message that the embodiment of the invention 3 provides;

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

Fig. 9 is the method flow diagram that a kind of notice that the embodiment of the invention 4 provides waits to receive the data indication information

Figure 10 is the form sketch map of a kind of GTIM of expansion of providing of the embodiment of the invention 4;

Figure 11 is the device block diagram that a kind of notice that the embodiment of the invention 5 provides waits to receive the data indication information;

Figure 12 is the device block diagram that a kind of notice that the embodiment of the invention 6 provides waits to receive the data indication information;

Figure 13 is a kind of method flow diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 7 provides;

Figure 14 is a kind of method flow diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 8 provides;

Figure 15 is a kind of device packets scheme sketch map that the embodiment of the invention 8 provides;

Figure 16 is a kind of method flow diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 9 provides;

Figure 17 is a kind of method flow diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 10 provides;

Figure 18 a is a kind of device block diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 11 provides;

Figure 18 b is a kind of device block diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 11 provides;

Figure 19 is a kind of device block diagram of waiting to receive the data indication information that obtains that the embodiment of the invention 12 provides;

Figure 20 is that the embodiment of the invention 13 provides a kind ofly sends and obtains the system diagram of waiting to receive the data indication information.

Embodiment

For making the object of the invention, technical scheme and advantage clearer, embodiment of the present invention is done to describe in detail further below in conjunction with accompanying drawing.

Embodiment 1

Referring to Fig. 1, a kind of notice waits to receive the method for data indication information, and the executive agent of this 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 of sending each device packets successively; What said reception data-indication message comprised terminal equipment in the device packets waits to receive data indication information and grouping information, said wait to receive data indication information indicating equipment divide into groups in each equipment whether have data to wait to receive.

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: through terminal equipment STA is divided into groups; Send the realization of technical scheme of the reception data-indication message of each device packets successively; The reception data-indication message message-length that makes each STA divide into groups is controlled; Improved reliability of information transmission,, promptly can transmit the information to be transmitted of a large amount of STA through increasing the quantity that STA divides into groups.

Embodiment 2

Referring to Fig. 2, a kind of method of waiting to receive the data indication information of obtaining, the executive agent of this 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; What said reception data-indication message comprised terminal device in the device packets waits to receive data indication information and grouping information, saidly waits to receive whether each equipment has data to wait to receive in the grouping of data indication information indicating equipment;

Step 202: judge the reception data-indication message whether said reception data-indication message divides into groups for this group equipment based on said grouping information,

If, execution in step 203;

If not, execution in step 204;

Step 203: wait to receive the data indication information and carry out DRP data reception process according to said;

Step 204: calculate according to said grouping information and to receive the required stand-by period of reception data-indication message that this group equipment is divided into groups, and when the said stand-by period arrives, once more the receiving equipment reception data-indication message of dividing into groups.

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: the realization of the technical scheme that provides through present embodiment; Make equipment after the reception data-indication message that the first time, receiving equipment divided into groups; Calculate the stand-by period, and arrive the reception data-indication message that the back receiving equipment divides into groups, can obtain the reception data-indication message that self belongs to device packets in the stand-by period; Avoid each all troubles of the reception data-indication message of receiving equipment, saved energy consumption.

Embodiment 3

Referring to Fig. 3, a kind of notice waits to receive the method for data indication information, considers and AP (Access Point in the present embodiment; Access point) scene that related STA (Station supports the terminal equipment of 802.11 agreements) is numerous, communication delay is insensitive, amount of communication data is little can be divided into groups numerous STA; Obtaining STA divides into groups; Each send the reception data indication information that a STA divides into groups, this receptions data indication information is used to indicate this STA interior STA that divides into groups whether to remain to be received data, like this; Reception data indication information through each STA grouping of continuous transmission; To notify each STA whether to remain to be received data, the executive agent of the said method of present embodiment is AP, and concrete steps are following:

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

Preferably; AP inserts WiFi (Wireless Fidelity according to the STA that is associated with it; Wireless Fidelity) time of wireless network is distributed continuous AID for the STA that is associated with it, when some STA related with AP broken off with being connected of WiFi, so; AP will dynamically adjust the AID that distributes to the STA related with AP, be continuous with the AID that guarantees the STA related with AP;

For example; The STA1 that is associated with AP, STA2, STA3 ..., STA2015; Amount to 2015 STA; These 2015 STA successively insert the WiFi wireless network, AP distribute to STA1, STA2, STA3 ..., the AID of STA2015 is respectively 1,2,3 ..., 2015, when STA2, STA3 have broken off with being connected of WiFi network; AID 2, AID 3 that AP will originally distribute to STA2, STA3 redistribute to STA2014, STA2015, thereby avoid existing in the sequence of AID related spacing sign indicating number in enormous quantities;

Whether according to the regulation of existing standard, AID is that 0 reservation is used, be used to indicate AP to have multicast message to need to send; That is to say that the AID of STA can not be 0, but in the present invention; According to the difference of AP to the STA packet mode, can be assigned as 0 AID under the part mode for STA, the present invention will not stress whether can be the AID that STA distributes 0 value; This is a concrete regulation, does not influence the general applicability of inventive concept;

This step guarantees the continuity of the AID of the STA related with AP, be in subsequent process to STA according to AID when dividing into groups, the STA that the centre occurs is grouped into the problem of sky.

Need to prove that this step is an optional step;

Step 301:AP divides into groups the STA related with it;

Particularly, the STA that AP will be associated with it divides into groups, and comprises following three kinds of modes:

Mode one: with the group character hyte of the predetermined bit hyte among the association identification AID (Association ID, association identification) of STA as STA, this group character hyte is used to identify the packet number of the affiliated STA grouping of this STA and the packet count that STA divides into groups; Group character hyte according among the AID of STA is divided into groups STA;

Illustrate at present, how STA to be divided into groups according to the group character hyte among the AID of STA, as follows:

As shown in Figure 4, AID is 16 long contents, and the span of AID is 1～2007 and to be placed on low 14 be among the B0 to 13, and wherein, B0 is a lowest order, and B13 is a highest order; Suppose low 2 B among the AID of STA ₁, B ₀As the group character position of STA, when the B1B0 value was " 00 ", it was during 0 STA divides into groups that this explanation is assigned to packet number with this STA, and when the B1B0 value be " 01 ", then this STA is assigned to packet number was in 1 the STA grouping in explanation, and the like; Because this value of two can be " 00 ", " 01 ", " 10 ", 4 values such as " 11 ", promptly AP is divided into 4 STA groupings with the STA related with it.So, suppose that B1 and B0 are as the group character position of STA with low 3 B2 among the AID of STA; Then when the value of B2B1B0 is " 000 ", then this STA being assigned to packet number is during 0 STA divides into groups, when the value of B2B1B0 is " 001 "; It is during 1 STA divides into groups that AP need assign to packet number with STA as requested; By that analogy, since the value of B2B1B0 can be " 000 ", " 001 ", " 010 " ... and " 111 " 8 values of etc.ing promptly can be divided into 8 STA groupings with STA; Or the like.So, AP just can come correspondence that the preset bit hyte among the AID is set based on the requirement of packet count, counts the STA grouping situation of requirement to satisfy different grouping.

Under this packet mode; AP can be associated with in the process of AP at STA; The AID bit hyte information that indication is used to divide into groups in associate response message; Also can this bit hyte packets of information be contained in the reception data-indication message of grouping; When STA receives the AID bit hyte information that is used to divide into groups, can be according to definite grouping that oneself belongs to of the AID of oneself and the total packet count in the system, STA can also obtain its position at the follow-up reception data indication information of receiving with the AID bit hyte information that is used for dividing into groups according to the AID of self.

Mode two: the span of confirming the association identification of terminal equipment in packet count and each device packets of device packets; Span according to the association identification of terminal equipment in the association identification of terminal equipment and the said device packets is divided into groups terminal equipment;

Specifically comprise the steps:

Step 301-1: packet count is set according to the actual requirements, as takes all factors into consideration in the requirements such as Beacon (beacon) frame length, transmission time, network load one or more packet count is set;

For example, take all factors into consideration the requirement of Beacon frame length, transmission time and network load after, it is 63 that packet count is set, that is: STA is divided into 63 STA and divides into groups;

In one embodiment; Receive the packet count of the time relative set STA grouping that self belongs to the reception data-indication message of dividing into groups based on STA; Because considering each STA among this embodiment divides into groups according to the continuous situation of sending the corresponding reception data-indication message of each STA grouping successively of certain fixed cycle; So, if STA is divided into 63 groupings, then STA just need just can receive and self belong to the reception data-indication message of dividing into groups in per 63 cycles; Certainly in order to shorten or the STA that extend receives time of the reception data-indication message of himself place dividing into groups, the STA packet count that corresponding size need be set gets final product;

Step 301-2: the number of the STA that is associated with AP of statistics, and the packet count of STA number that obtains according to statistics and equipment is confirmed the span of the AID of STA in each STA grouping;

For example, the STA that is associated with AP has 2015, and the packet count of the STA of setting is 63; Be in each STA grouping 32 STA to be arranged at most, so, the AID scope of the STA in first STA grouping is 1 to 32; The AID scope of STA in second STA divides into groups is 33 to 64; The span of the AID of i the interior STA of STA grouping is that (32* (i-1)+1) arrives 32*i or the like, and wherein, the span of i is 1 to 63;

Step 301-3: during the STA under each STA that will be associated with AP according to the AID of STA assigns to separately divides into groups;

For example, STA ₁Pairing AID is 1, in first STA divides into groups in the span of the AID of STA, with STA ₁Assign in first STA grouping STA ₇₈Pairing AID is 78, in the span of the AID of the STA in the 3rd STA divides into groups, then with STA ₇₈Assign in the 3rd the STA grouping, and the like, grouping accomplished to STA;

So, after the processing of step 302-3,2015 STA that are associated with AP are divided into 63 groups through step 302-1,32 STA are arranged in every group, and each STA grouping situation is following:

AID 1, AID 2 ..., to belong to packet number be that 1 STA divides into groups to AID 32 pairing STA;

AID 33, AID 34 ..., to belong to packet number be that 2 STA divides into groups to AID 64 pairing STA;

......

AID 1985, AID 1986 ..., to belong to packet number be that 63 STA divides into groups to AID 2015 pairing STA;

Under this packet mode; AP can be associated with in the process of AP at STA; The total packet count of maximum AID value, the system of the sum of STA, permission or every group information such as STA quantity in the indication mechanism in associate response message; STA can go out the packet number that oneself belongs to according to these information calculations; And obtain total group number, and can also calculate the position of this STA in dividing into groups in the place with total group number or every group of STA quantity according to its AID, be corresponding oneself indication information to confirm in the follow-up reception data indication information of receiving which bit; Certainly AP also can directly tell STA with packet number, total group number, the position of this STA in grouping, removes STA from and calculates.

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

Particularly, AP is being the STA related with it when distributing AID, also for this STA distributes a group character, here, for the AID of STA distribution and group character are two signs independently; For example, AP is STA when distributing AID, and the group character that distributes for this STA is 3, and then to belong to packet number be that 3 STA divides into groups to this STA; Perhaps

AP is that the STA related with it distributes an EAID (Extended Association ID, expansion association identification), and this EAID comprises the group character of STA and the AID sign of STA; For example, the group character that the predetermined figure of high-order portion is used to indicate STA among the appointment EAID is when the residue figure place is used in reference to the AID that shows STA among the EAID.

In addition, need to prove that under this STA packet mode, AP can dynamically adjust the grouping situation of STA in follow-up process; For example, it is 3 that AP is initially the group character that STA1 distributes, and promptly specifying this STA1 to belong to packet number is that 3 STA divides into groups; But, need the group character of STA1 be made as 1 based on some, being about to STA1, to have assigned to packet number be during 1 STA divides into groups; Correspondingly, the AID of this STA also possibly need to revise, and this all allows.

Under this packet mode; AP can be associated with in the process of AP at STA; Indication STA place packet number, the total packet count of system in associate response message; Can also comprise maximum AID value in every group STA quantity or the group, STA can confirm that in the follow-up reception data indication information of receiving which bit is the indication information of correspondence oneself according to AID value in its group.

Step 302:AP detects in the group each STA and whether remains to be received data; If have, then STA wait that receiving the data indicating bit is set to 1, if do not have; Then STA wait that receiving the data indicating bit is set to 0, thereby obtain each STA wait to receive the data indication information;

Particularly, whether AP is in real time or before waiting of send dividing into groups receives data-indication message, detect and have data will send to each STA in dividing into groups.For each STA, if there are data to send, can it receive the data indicating bit and be set to 1 to it, if do not have, then it is waited to receive the data indicating bit and is set to 0.

Step 303: generate pairing minute group of received data-indication message of STA grouping; Be GTIM (Grouped Traffic Indication Message; Divide the group of received data-indication message), what this receptions data-indication message comprised that STA divides into groups each interior STA waits to receive data indication information and grouping information;

Particularly; Can the testing result in the step 302 be set among the GTIM; Obtain the reception data-indication message that STA divides into groups, in receiving data-indication message, current grouping information is set simultaneously, according to the grouping situation of step 301; This grouping information comprises packet number and the packet count that current device divides into groups; Perhaps comprise packet number, packet count and grouping size that current device divides into groups, perhaps comprise the packet number that current device divides into groups, the group character hyte information in the association identification, said wait to receive data indication information indicating equipment divide into groups in each equipment whether have data to need to receive;

Form for TIM in the existing standard (Traffic Indication Message receives data-indication message) message shown in Figure 5,, only introduce the definition of each relevant among figure field here with the present invention:

Element ID: length is a byte, and being used to identify this message is a TIM message;

Length: length is a byte, is used to identify 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 broadcast is arranged; Irrelevant with the present invention; Deviant of other 7 bit representation, the AID of an initial bit representative among the indication Partial Virtual Bitmap, and the STA data all not received that all AID represent before the AID of this initial bit representative; Promptly the indicating bit of the STA of all AID representatives has been omitted before the AID of this initial bits position representative, and this is the method for a kind of Bitmap of compression;

Partial Virtual Bitmap: length is between 1 to 251 byte, the corresponding sign of each Bit among the Bitmap (bitmap) each STA whether remain to be received data; When the Bit value among the Bitmap is 1, represent that its corresponding STA has data to be transmitted to need to receive; To represent which STA need be that the compression situation of Bitmap is calculated according to the value of Bitmap Control to each Bit among the Bitmap specifically, is not described in detail here;

What the present invention adopted each STA of same procedure in each STA is divided into groups waits that receiving the data indicating bit is set in the Partial Virtual Bitmap field and gets final product, and still can adopt above-mentioned compression method; For the Bitmap before the compression not, its first bit be in dividing into groups first STA wait to receive the data indicating bit, second bit be in dividing into groups second STA wait receive the data indicating bit, the rest may be inferred;

Different is; The present invention also carries the grouping information that STA divides into groups in STA branch group of received data-indication message (GTIM); This grouping information can comprise packet number and the packet bit group information that STA divides into groups based on used packet mode, and perhaps, this grouping information comprises the total packet count and the size of dividing into groups of packet number, system that STA divides into groups; Perhaps, this grouping information comprises the total packet count of packet number, system that STA divides into groups;

Wherein, If using the mode of describing in the step 301 two divides into groups; Grouping information comprises packet number, packet count and the grouping size that STA divides into groups; Then can be in TIM new field GTIM Number, GTIM Period and GTIM Size, be respectively applied for the STA that carries in the sign GTIM message and wait to receive grouping information such as the pairing packet number of data indication information, packet count and grouping size;

Particularly, through after the above-mentioned processing, the form of the reception data-indication message of STA grouping specifically as shown in Figure 6, being defined as follows of each field among the figure:

Element ID: different with the value of Element ID among the TIM, here, it is branch group of received data-indication message, i.e. a GTIM message that this field is used to identify this message;

Length: with the same meaning of Length among the TIM, promptly this field is used to identify the total length that receives data-indication message;

GTIM Number: be used for identifying and receive the STA that data-indication message carries and wait to receive the pairing STA packet number of indication information, what promptly this reception data-indication message was carried is that each STA waited to receive the data indication information during which was organized;

GTIM Period: be used for the identification packet number, if the reception data-indication message that each STA divides into groups is sent successively in turn, this field also can represent to receive the transmission cycle of data-indication message;

GTIM Size: be used for the identification packet size, i.e. what STA each STA grouping comprises;

Bitmap Control: with the same meaning of Bitmap Control among the TIM, in promptly same group if several initial STA do not have data to wait to receive, then can adopt the compress mode identical with TIM with initial all be that 0 indicating bit dispenses; Can adopt the computing formula that is different from the existing standard when but calculating the STA of first Bit representative among the Bitmap, for example can B1 among the BitmapControl directly be regarded as the number of abridged 0 among the Bitmap to the value of B7 according to the value of Bitmap Control.

Partial Virtual Bitmap: with the same meaning of Partial Virtual Bitmap among the TIM; Be used for identifying each STA of STA grouping and receive data indication information; The maximum number of digits of Bitmap (bitmap) and grouping size coupling, every reception data indication information that is used for the corresponding STA of corresponding sign STA grouping;

Wherein, If using the mode of describing in the step 301 three divides into groups; Grouping information comprises packet number and the packet count that STA divides into groups, can be in TIM new field GTIM Number, GTIM Period be respectively applied for the STA that carries in the sign GTIM message and wait to receive the pairing packet number of data indication information and total group number; The form of the reception data-indication message that STA divides into groups is specifically as shown in Figure 7, and the same meaning of corresponding field among the definition of each field and Fig. 6 just repeats no more here among the figure.

Wherein, if use the mode of describing in the step 301 one to divide into groups, grouping information comprises the bit hyte information of expression grouping among packet number that STA divides into groups and the AID.The bit hyte information representation that expression is divided into groups among the said AID is got which position among the AID as group character, for example with AID hang down three as group character, then this field can value be 3; Low three among the expression AID is group character; Also can adopt the mask mode, 0x0003 for example, this is the expression way of one 16 system; Being a numerical value identical with the length of AID, wherein is that 1 part representes that the value of this part is the group id that divides into groups in the STA place among the AID.The benefit that adopts the mask mode is to adopt any position among the AID as group id, and is not necessarily the continuous position of low level or high-order continuous position.

As shown in Figure 8; The usage example of Bitmap is following: among Fig. 8 among the Partial Virtual Bitmap value of Bit 2, Bit 7, Bit 22 and Bit 24 be 1; Then represent AID 2, AID 7, and AID 22 and AID 24 corresponding STA have data to be transmitted to need to receive.

For example, generate the reception data-indication message that above-mentioned 63 STA divide into groups respectively, be designated as respectively GTIM1, GTIM 2 ..., GTIM 63; Wherein, Packet number is that 1 the STA corresponding reception data-indication message of dividing into groups is GTIM 1; In this GTIM 1 message; GTIM Number is 1, GTIM Period is 63, GTIM Size is 32, that carries packet number and be 1 STA waits to receive the data indication information, and promptly every correspondence among the Partial Virtual Bitmap has identified the data that whether remain to be received that packet number is each STA of 1; Packet number is that 2 the STA corresponding reception data-indication message of dividing into groups is GTIM 2; In these GTIM 2 message; GTIM Number is 2, GTIM Period is 63, GTIM Size is 32; Carry packet number and be the information to be transmitted of 2 STA, promptly every correspondence among the Partial Virtual Bitmap has identified the information to be transmitted that packet number is each STA of 2;

Need to prove that in addition the message header part in the above-mentioned reception data-indication message can be shared byte like Element ID, Length, GTIM Number, GTIM Period and GTIM Size etc., can further reduce the byte length of GTIM message.

The reception data-indication message that the STA that step 304:AP broadcasting generates divides into groups;

Particularly, AP packet number order of dividing into groups according to STA or inverted order are sent the reception data-indication message that the STA that generates divides into groups;

For example, AP according to packet number successively send packet number be 1,2 ..., 63 reception data-indication message GTIM 1, GTIM 2 ..., GTIM 63;

In one embodiment; AP sends reception data-indication message that STA divides into groups independently; But Beacon (beacon) frame through periodic broadcast sends and respectively receives data-indication message, and promptly the STA reception data-indication message of dividing into groups sends as the part of Beacon frame, so; To the corresponding reception data-indication message of each STA group all be sent; Then AP need pass through with the Beacon frame of packet count same number and accomplish, and when sending Beacon, all carries a corresponding reception data-indication message of STA grouping successively by packet number order or inverted order in the Beacon frame at every turn;

Wherein, The transmission cycle that also comprises the Beacon frame in this Beacon frame is Beacon cycle (beacon period); Every like AP at a distance from Beacon frame of the time of 10ms transmission, then can whenever send the reception data-indication message that a STA divides into groups, so at a distance from the time of 10ms; The reception data-indication message of each STA group is all sent, then the AP time that need pass through Beacon cycle * packet count could accomplish;

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought: the present invention is through dividing into groups to STA; And generate and send the reception data-indication message that each STA divides into groups successively, and the reception data-indication message length controlled that makes each STA grouping, it is long to avoid receiving data-indication message length; Improved reliability of information transmission; In addition, through increasing the packet count of STA, promptly can indicate whether to remain to be received data to a large amount of STA in batches; Moreover; AP sends the GTIM that each STA divides into groups according to packet number order or inverted order that STA divides into groups in the present embodiment, makes STA when the GTIM that each STA of reception divides into groups, and can regularly follow; Be that STA receives GTIM's that each STA divides into groups successively according to the packet number that STA divides into groups; According to this rule, make STA needn't all will remove to receive the GTIM that each STA that AP sends divides into groups each Beacon cycle, only need receive the GTIM that STA place that AP sends divides into groups and can obtain the indication information that self whether remains to be received data at the time point of confirming; In and communication system that amount of communication data again less less demanding to real-time communication, this helps the STA power saving.

Embodiment 4

Referring to Fig. 9, a kind of notice waits to receive the method for data indication information, considers and AP (Access Point in the present embodiment; Access point) related STA (Station supports the terminal equipment of 802.11 agreements) is numerous, communication delay is insensitive, amount of communication data is little and the scene of low speed, can numerous STA be divided into groups; Obtain STA and divide into groups, send the reception data indication information that a STA divides into groups at every turn, this receptions data indication information is used to indicate this STA interior STA that divides into groups whether to remain to be received data; Like this, through repeatedly sending the reception data indication information that each STA divides into groups respectively, whether remain to be received data to notify each STA; Owing to be under the low speed scene; Reception data indication information that then can one group of STA of every transmission just sends a plurality of auxiliary Indication messages, sends this group and organizes the time interval of the reception data indication information of STA with next to strengthen; Wherein, auxiliary Indication message comprises grouping information, interval information and GTIM count information at interval; The executive agent of the said method of present embodiment is AP, and concrete steps are following:

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

See the described content of step 300 among the embodiment 3 for details, just repeat no more here.

The STA that step 401:AP will be associated with it divides into groups;

The described group technology of this step is identical with the described group technology of embodiment 3 steps 301, just repeats no more here.

Step 402:AP detects in the group each STA and whether remains to be received data; If have, then STA wait that receiving the data indicating bit is set to 1, if do not have; Then STA wait that receiving the data indicating bit is set to 0, thereby obtain the data-indication message to be received of each STA;

See the said content of embodiment 3 steps 302 for details, just repeat no more here.

Step 403: generate the expansion reception data-indication message that STA divides into groups;

This expansion receive step 303 generated among data-indication message and the embodiment 3 reception data-indication message different be; This expansion receive data-indication message except comprise STA divide into groups in each STA wait receive the grouping information that data indication information and STA divide into groups, also comprise interval information and count information at interval; Said interval information is meant between adjacent two Beacon frames that comprise STA branch group of received data-indication message; The number of the auxiliary Indication message that sends; Said interval count information changes between said interval information value 0, indicates whether current message is said reception data-indication message;

Particularly; New field GTIM Interval and the GTIM Number reception data-indication message that can be expanded in the message header of the STA branch group of received data-indication message that in embodiment 3, generates in the step 303; New field is respectively applied for sign interval information, interval count information; The form that this expansion receives data-indication message is shown in figure 10, and the definition of each field is following among the figure:

Element ID: being used to identify this message is that an expansion receives data-indication message;

Length: be used to identify the total length that expansion receives data-indication message;

GTIM Count: the expansion that is used to be identified at current STA grouping receives also will send the expansion what auxiliary Indication messages just can send next STA grouping after the data-indication message and receive data-indication message; Numerical value 0 and the interval information value between change, 0 the expression this message expand the reception data-indication message exactly;

GTIM Interval: be used to identify between the expansion reception data-indication message of two adjacent STA groupings the number of the auxiliary Indication message of transmission;

GTIM Number: the packet number that STA that expression is being sent or that next time be about to send divides into groups; When GTIM Count=0; What represent current transmission is exactly that the STA expansion of dividing into groups receives data-indication message, this field identification send the packet number that STA divides into groups; If GTIM Count is not equal to 0, then this field can identify and be about to send the packet number of STA grouping or be left the packet number that nearest transmission STA divides into groups next time.

GTIM Period: be used for the identification packet number, because each divides into groups to send in turn successively, then this field has represented that also expansion receives the transmission cycle of data-indication message;

GTIM Size: be used for the identification packet size, i.e. what STA each grouping comprises;

According to group technology, GTIM Period and GTIM Size possibly not need, or only need GTIMPeriod; If divide into groups according to the mode one described in embodiment 3 steps 301; GTIM Period and GTIM Size do not need; But with a packet bit hyte information representation grouping situation; See the associated description in embodiment 3 steps 301 for details, the expansion that so just can further reduce the STA grouping receives the length of data-indication message;

Bitmap Control: referring to describing accordingly among the embodiment 3;

Partial Virtual Bitmap: referring to describing accordingly among the embodiment 3;

Need to prove that in addition the message header part in the above-mentioned GTIM message can be shared byte like Element ID, Length, GTIM Number, GTIM Period and GTIM Size etc., further reduces the byte length that this expansion receives data-indication message.

The expansion reception data-indication message that the STA that step 404:AP broadcasting generates divides into groups corresponding;

Need to prove; AP is after the expansion that the intact STA of every broadcasting divides into groups receives data-indication message; Just send a count information value auxiliary indication information at interval; And then send the expansion reception data-indication message that next STA divides into groups, so,, the expansion reception data-indication message of each STA grouping finishes up to being sent; Expansion receive data-indication message still be auxiliary Indication message all be in the Beacon frame, to send; That is to say; Insert several Beacon cycles between the expansion reception data-indication message that every adjacent two STA divides into groups and send auxiliary Indication message, make that intactly sending once the reception data-indication message of all groupings needs for more time.

Wherein, auxiliary Indication message comprises grouping information, interval information and interval count information, and meaning receives grouping information, the interval information in the data-indication message with expansion and count information is consistent at interval.

The beneficial effect that technical scheme reached that present embodiment adopted is the same with the beneficial effect that embodiment 3 is reached; In addition; After the expansion that the embodiment of the invention is divided into groups through the intact STA of every transmission receives data-indication message, just send several auxiliary indication informations, strengthen STA and receive the blanking time that expansion receives data-indication message; More be applicable to the application scenarios of and low data bulk very insensitive, more help the STA power saving communication delay.

Embodiment 5

Referring to Figure 11, a kind of notice waits to receive the method for data indication information, considers and AP (Access Point in the present embodiment; Access point) related STA (Station supports the terminal equipment of 802.11 agreements) is numerous, communication delay is insensitive, amount of communication data is little and the scene of low speed, can numerous STA be divided into groups; Obtain STA and divide into groups, send the reception data indication information that a STA divides into groups at every turn, whether this reception data indication information is used to indicate each STA in the STA grouping to have data to need to receive; Like this; Through repeatedly sending the reception data indication information that each STA divides into groups respectively, whether remain to be received data to notify each STA, under, the little scene of amount of communication data insensitive for communication delay; Then can be behind the reception data indication information that sends each STA grouping continuously; Send one or more auxiliary Indication messages, then, the reception data indication information that each STA of continuous again transmission divides into groups receives time interval of the reception data-indication message of its place group can strengthen STA; The executive agent of the said method of present embodiment is AP, and concrete steps are following:

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

See for details and implement the described content of step 300 in 2, just repeat no more here.

The STA that step 501:AP will be associated with it divides into groups;

Step 502:AP sets the Beacon periodicity greater than the total packet number, is called the wheel that receives data-indication message and broadcasts Cycle Length, and unit is the Beacon cycle, is called for short wheel and broadcasts Cycle Length;

Particularly; Wheel is broadcast and is comprised the no indication information broadcasting phase that transmission contains the indication information broadcasting phase that receives data-indication message and sends auxiliary Indication message in the cycle, and in the indication information broadcasting phase, the reception data-indication message with each STA grouping sends continuously; Afterwards; In the broadcasting phase, will assist Indication message to send in no indication information, and accomplish one and take turns the transmission of the reception data-indication message of each STA grouping;

For example, AP is divided into 8 groupings with STA, wheel is broadcast the cycle be made as 20; Then AP will be continuously at 8 Beacon in the cycle; Promptly in the Indication message broadcasting phase, comprise the reception data-indication message that STA divides into groups in the Beacon frame of transmission, and at ensuing 12 Beacon in the cycle; Promptly in the broadcasting phase, comprise auxiliary Indication message in the Beacon frame of transmission in no indication information.

Step 503: in the Indication message broadcasting phase, AP detect corresponding STA of current Beacon cycle divide into groups in each STA whether remain to be received data, in no indication information in the broadcasting phase, AP does not detect STA and whether remains to be received data;

See for details and implement the described content of step 302 in 2, just repeat no more here.

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

It is the same that this expansion receives among data-indication message generation method and the embodiment 4 the described method of step 403; Different is, the meaning that this expansion receives interpolation interval information and interval information of being added in the step 403 among count information and the embodiment 4 at interval and interval count information in data-indication message is different;

Particularly; In the present embodiment; Interval information is indicated to the said auxiliary Indication message number of sending between the reception data-indication message of next round transmitting apparatus grouping; Count information changes between said interval information value 0 at interval, and indicating current message is said reception data-indication message or said auxiliary Indication message.

Particularly, the form that this expansion receives data-indication message is shown in Figure 10 (structure that receives data-indication message with the expansion of embodiment 4 is basic identical), and the definition of each field is following among the figure:

GTIM Count: be used to be identified at also have what auxiliary Indication messages just can send after the auxiliary Indication message of current transmission to contain expansion and receive data-indication message;

Particularly, GTIM Count has two kinds of counting modes:

First kind, GTIM Count begins to begin downwards counting up to being 0 from GTIM Interval; When GTIMCount is not 0, current transmission be auxiliary Indication message, its value has been indicated and is also wanted what Beacon cycles just to begin the reception data-indication message that next round is sent grouping; When GTIM Count was 0, then current transmission was the reception data-indication message of device packets;

Second kind; GTIM Count upwards counts up to equating with GTIM Interval since 0; When GTIMCount and GTIM Interval are unequal; Current transmission be auxiliary Indication message, the reception data-indication message that its value has indicated next round to send to divide into groups is the Beacon cycle of process, the so remaining Beacon cycle is exactly that GTIM Interval subtracts GTIM Count; When GTIM Count equated with GTIMInterval, then current transmission was the reception data-indication message of device packets; GTIM Count among the embodiment 4 can have identical implementation method;

GTIM Interval: be used to identify at interval to begin to send continuously the reception data-indication message that STA divides into groups behind what auxiliary Indication messages, just do not have the Beacon number that indication information is broadcast the phase;

Wherein, GTIM Interval and the addition of STA packet count equal wheel and broadcast Cycle Length, and here, STA packet count just indication information is broadcast the Beacon number of phase;

GTIM Number: broadcast the packet number that expression is being sent in the reception data-indication message of grouping of phase at indication information, in the auxiliary Indication message of no indication information broadcasting phase, do not exist or meaningless.

GTIM Period: identification packet number;

GTIM Size: the size of dividing into groups, i.e. what STA each grouping comprises;

According to group technology, GTIM Period and GTIM Size possibly not need, or only need GTIMPeriod; If divide into groups according to the method one described in embodiment 3 steps 301, GTIM Period and GTIM Size do not need, but with a packet bit hyte information representation grouping situation, see the associated description in embodiment 3 steps 301 for details;

Bitmap Control: referring to description relevant among the embodiment 3;

Partial Virtual Bitmap: referring to description relevant among the embodiment 3;

The expansion that the STA that step 505:AP broadcasting generates divides into groups receives data-indication message;

Need to prove that if AP sends one or a plurality of auxiliary Indication messages having broadcasted after expansion that each STA divides into groups receives data-indication message, wherein, expansion receive data-indication message still be auxiliary Indication message all be in the Beacon frame, to send; That is to say, between the expansion reception data-indication message that intact each STA of every transmission divides into groups, insert several Beacon cycles and send auxiliary Indication message, make that intactly sending once the reception data-indication message of all groupings needs for more time.

The beneficial effect that technical scheme reached that present embodiment adopted is the same with the beneficial effect that embodiment 4 is reached; In addition; After the embodiment of the invention is passed through to have sent the reception data-indication message of each STA grouping continuously; Send several and do not comprise data indication information Beacon frame is broadcast STA reception data indication information with the prolongation wheel the time that receives; The cycle that makes all STA receive once to receive the data indication information strengthens, and the application scenarios of and low data bulk very insensitive for communication delay more helps the STA power saving.

Real-time example 6

Referring to Figure 12, a kind of notice waits to receive the device of data indication information, and this device comprises the AP among the said method embodiment, comprising: grouping module 601 and sending module 602, introduce the concrete function of each module below in detail:

Grouping module 601 is used for terminal equipment is divided into groups;

Sending module 602; Be used for sending successively the reception data-indication message of each device packets; What said reception data-indication message comprised terminal equipment in the device packets waits to receive data indication information and grouping information, said wait to receive data indication information indicating equipment divide into groups in each equipment whether have data to wait to receive.

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

Particularly, grouping module 601 comprises:

Confirm unit 6011, be used for confirming the span of the association identification of terminal equipment in packet count and each device packets of device packets;

Grouped element 6012 is used for according to the span of the association identification of terminal equipment in the association identification of terminal equipment and the device packets terminal equipment being divided into groups; Perhaps

Grouping module 601 comprises:

Unit 6013 is set, is used for bit with the predetermined figure of the association identification of terminal equipment as the group character position;

Grouped element 6014 is used for according to the group character position of the association identification of terminal equipment terminal equipment being divided into groups; Perhaps

Grouping module 601 comprises:

Allocation units 6015, being used to establish is that the terminal equipment allocation packets identifies in advance;

Grouping module 6016 is used for according to group character terminal equipment being divided into groups.

When the reception data-indication message of the device packets that generates when generation module 602 particularly, also comprises interval information with count information at interval

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

Said auxiliary Indication message comprises said interval information, interval count information and grouping information;

Said interval information is indicated the said auxiliary Indication message number of sending between the reception data-indication message of adjacent two device packets; Said interval count information changes between said interval information value 0, and indicating current message is said reception data-indication message or said auxiliary Indication message.

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

Said interval information is indicated to the said auxiliary Indication message number of sending between the reception data-indication message of next round transmitting apparatus grouping; Said interval count information changes between said interval information value 0, and indicating current message is said reception data-indication message or said auxiliary Indication message.

This device also comprises:

Detection module 603, what be used for sense terminals equipment waits to receive the data indication information;

Generation module 604 is used for the reception data-indication message of waiting to receive data indication information generation device packets according to detected.

Dynamic assignment module 605 is used to the continuous association identification of terminal equipment dynamic assignment.

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: through terminal equipment STA is divided into groups; Send the realization of technical scheme of the reception data-indication message of each device packets successively; Make that the message-length of the reception data-indication message that each STA divides into groups is controlled; Improved reliability of information transmission,, promptly can transmit the information to be transmitted of a large amount of STA through increasing the quantity that STA divides into groups; In addition, in receiving data-indication message, comprise interval information, at interval during count information, this interval information, count information has extended the stand-by period of STA at interval, makes STA information to be transmitted can wait for the longer time, more is applicable to the application scenarios of low speed.

Embodiment 7

Referring to Figure 13, a kind of method of waiting to receive the data indication information of obtaining, the executive agent of this method comprises terminal equipment STA, specifically comprises the steps:

Step 701:STA receives the reception data-indication message of each STA grouping of AP transmission, and this reception data-indication message comprises the grouping information of waiting to receive data indication information and STA grouping of each STA in the STA grouping;

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

For example; Grouping information GTIMPeriod=63, GTIM Size=32, GTIM Number=5 in the reception data-indication message that the STA of current reception divides into groups, expression has that 32 STA, this GTIM that receives are arranged during 63 STA divide into groups, STA divide into groups is that packet number is the GTIM that 5 STA divides into groups;

Step 703:STA judges according to the grouping information of obtaining whether the reception data-indication message of current reception is that self belongs to the reception data-indication message that STA divides into groups,

If, execution in step 704;

If not, then return step 701;

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

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

Particularly, STA can obtain self by following three kinds of modes and belong to the packet number that STA divides into groups:

Rounding self AID divided by the grouping size in the grouping information of obtaining after, mode one, STA obtain the packet number that self place STA divides into groups; For example, the AID of STA is 24, obtains 0 after rounding divided by the grouping size of obtaining 63, and 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 self the group character position of association identification;

Particularly, STA obtains the group character position from the AID of self, this group character bit-identify STA place the STA packet number and the STA packet count of dividing into groups; For example, high two among the AID is the group character position of STA, and the group character position information of obtaining is " 00 "; The packet number that the STA that then self belongs to divides into groups is 0; If the group character position information of obtaining is " 10 ", the packet number that the STA that then self belongs to divides into groups is 2, and so on.

Mode three, the group character that distributes according to self obtain the packet number of self place device packets, and this group character has identified the packet number that self place STA divides into groups;

Particularly, AP just for this STA has distributed corresponding group character, is used to identify the packet number of this STA place STA grouping when distributing AID for STA, and like the group character 5 of STA, then then to belong to packet number be that 5 STA divides into groups to this STA;

Step 703-2:STA judge packet number that self place STA divides into groups whether with the grouping information of obtaining in packet number consistent,

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

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

Step 704:STA waits to receive the data indication information from what current reception data-indication message was obtained oneself;

Step 705:STA waits according to self receiving the data indication information judges self whether have the data needs to receive,

If have, then ask AP to send data, perhaps, wait for that AP initiatively sends data;

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

For example, receiving STA that data-indication message carries, to wait to receive the Bitmap of data indication information as shown in Figure 2, and the value of the Bitmap that AID 24 is corresponding is 1, and this STA of this explanation has data to need to receive.

Step 701 is to 705 being processes that circulation is carried out; STA is by constantly receiving the reception data-indication message that AP sends; And judge whether this reception data-indication message is the reception data-indication message that self belongs to the STA grouping; Up to the reception data-indication message of obtaining self place STA grouping, and therefrom obtain self wait to receive the data indication information;

The beneficial effect that the embodiment of the invention is brought is: through the reception data-indication message of STA through continuous reception AP transmission; And judge whether this reception data-indication message is that self belongs to the reception data-indication message that STA divides into groups; Belong to the reception data-indication message that STA divides into groups up to obtaining self; And therefrom obtain self the realization of technical scheme of waiting to receive the data indication information; Just can from the reception data-indication message that receives, obtain the reception data-indication message of dividing into groups in self place through simple judgement, thus obtain self wait to receive the data indication information.

Embodiment 8

Referring to Figure 14: a kind of method of waiting to receive the data indication information of obtaining, the executive agent of this method comprises terminal equipment STA, specifically comprises the steps:

Step 801:STA receives the reception data-indication message of the STA grouping of AP transmission; This reception data-indication message comprises the grouping information of waiting to receive data indication information and STA grouping of each STA in the STA grouping; Whether wherein, wait to receive data indication information indication STA has data to wait to receive;

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

Wherein, grouping information comprises packet number and the packet count that current device divides into groups; Perhaps

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

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

Step 803:STA judges according to the grouping information of obtaining whether the reception data-indication message of current reception is that self belongs to the reception data-indication message that STA divides into groups,

If then execution in step 806;

If not, then execution in step 804;

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

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

Specifically referring to the description among the step 703-1 of embodiment 7.

Step 803-2:STA judge packet number that self place STA divides into groups whether with the grouping information of obtaining in packet number consistent,

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

Step 804:STA calculates the time that receives the reception data-indication message that self belongs to the STA grouping according to grouping information; Be designated as for first stand-by period; And in this first stand-by period, can get into battery saving mode; Do not receive any reception data-indication message that AP sends, to save energy consumption, execution in step 805;

Wherein, first stand-by period was the blanking time of STA between the time that the time and the STA of the reception data-indication message that the STA that receives the AP transmission for the first time divides into groups receive the reception data-indication message that self belongs to the STA grouping;

In one embodiment, STA calculates the stand-by period according to the packet number of dividing into groups in the packet count of obtaining, packet number and self place, comprising:

The size of the packet number of dividing into groups in the packet number that the STA contrast is obtained and self place,

If the packet number that the packet number of obtaining is divided into groups less than self place then adopts the first preset formula: in (self place packet number of dividing into groups-obtain packet number) * Beacon cycle, calculated for first stand-by period;

Below, simply introduce the origin of the first preset formula:

AP sends each corresponding reception data-indication message of dividing into groups according to the packet number order to STA; The current reception data-indication message that receives is the corresponding reception data-indication message of grouping of the packet number obtained; So; Receive self place corresponding reception data-indication message of dividing into groups, (packet number that self place packet number-go is obtained) individual reception data-indication message gets final product only to need then to receive that AP sends after this; Again since AP carry the corresponding reception data-indication message of each group through the Beacon frame to send, so STA only need wait for that ((packet number that self place packet number-go is obtained) * Beacon cycle) back receives the reception data-indication message that AP sends and gets final product;

For example; The packet number that self belongs to grouping is 5; The current reception data-indication message that receives is that packet number is 1 the corresponding reception data-indication message of grouping; STA receives the reception data-indication message that AP sends after the dormancy time in 4 Beacon cycles, just can obtain self having belonged to the corresponding reception data-indication message of grouping;

Belong to the packet number of dividing into groups if the packet number of obtaining equals self, then the reception data-indication message of current reception is the corresponding reception data-indication message of self place grouping, and at this moment, first stand-by period was 0;

If the packet number that the packet number of obtaining is divided into groups greater than self place then adopts the second preset formula ((packet number of dividing into groups in the packet number obtained of packet count-go+self place) * Beacon cycle) to calculate for first stand-by period;

Below, simply introduce the origin of the second preset formula:

Unstable networks, STA waits for too long, AP dynamically adjust factor such as grouping size and make STA occur missing to receive the divide into groups situation of corresponding GTIM message of self place, the packet number that the packet number in the promptly current reception data-indication message that receives is divided into groups greater than self place;

So; Under above-mentioned situation; When STA can only wait for the corresponding reception data-indication message of each group that AP sends according to the packet number order again; Receive self and belong to the corresponding reception data-indication message of dividing into groups, so, after the reception data-indication message of the grouping correspondence of STA between dividing into groups in current reception self place; (packet count-go self to belong to the packet number of dividing into groups) the individual reception data-indication message that receives the AP transmission gets final product; Again since AP carry the corresponding reception data-indication message of each group through the Beacon frame to send, so STA only needs to wait for that ((packet number of dividing into groups in the packet number obtained of packet count-go+self place) * Beacon cycle) back receives the reception data-indication message that AP sends and gets final product;

For example; Packet count is 63; The packet number that self belongs to grouping is 5; The current reception data-indication message that receives is that packet number is 6 the corresponding GTIM message of grouping, and STA receives the GTIM message that AP sends after the dormancy time in 62 Beacon cycles, just can obtain self having belonged to the corresponding reception data-indication message of grouping;

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

What step 806:STA obtained self from the reception data-indication message that self place STA divides into groups waits to receive the data indication information, wait to receive the data indication information according to this and judge whether the reception of data needs self is arranged,

If have, execution in step 807;

If no, execution in step 808;

Step 807: require AP to send data, perhaps, wait for that AP initiatively sends data, execution in step 808;

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

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

Wherein, second stand-by period was that STA is in the time interval that receives for the first time between the time that self belongs to the time of the reception data-indication message of dividing into groups and receive the reception data-indication message that self belongs to grouping again;

Below, simply introduce the origin of the 3rd preset formula:

STA is after obtaining for the first time the reception data-indication message that self belongs to grouping; Belong to the reception data-indication message of dividing into groups if receive self once more; Just must wait for that AP finishes the reception data-indication message transmission that self belongs to all groupings after dividing into groups; When sending each reception data-indication message of dividing into groups corresponding according to packet number once more; From the reception data-indication message of sending according to packet number once more, receive the reception data-indication message of dividing into groups in self place, could receive the reception data-indication message of dividing into groups in self place once more so need to wait for the time in (packet count * Beacon cycle);

Illustrate step 801-807 at present and how to realize, as shown in Figure 8:

With Figure 15 is example, from the reception data-indication message on the left side, can obtain, and the grouping size is 32; Be every group 32 STA are arranged; Packet count is 63, and GTIM 0 is 0 pairing reception data-indication message for packet number, and GTIM 1 is 1 pairing reception data-indication message for packet number.Here, the AID that supposes STA is 50, then based on the grouping information that receives; With 50 divided by 32 and round downwards after obtain 1, promptly should to receive packet number be 1 corresponding reception data-indication message to STA, promptly receives GTIM 1; And current reception is that packet number is the corresponding reception data-indication message of 0 grouping, and promptly GTIM 0, so; According to AP is the rule of sending each corresponding reception data-indication message of dividing into groups by the packet number order; STA is as long as wait for Beacon cycle time, promptly receives the next reception data-indication message that data-indication message just can obtain self place grouping that receives, and promptly GTIM 1; Information to be transmitted by each STA in the entrained grouping 1 of GTIM 1 can be known; AID 50 corresponding Bit are 0, and promptly these AID 50 pairing STA do not have data to need to receive, and wait for 63 Beacon message afterwards; Receive again next time and self belong to corresponding reception data-indication message; During this period of time, STA can get into power down mode, thereby saves energy consumption.

In addition, need to prove, when the load in the network (AP related STA number) when bigger variation takes place, can also dynamically be adjusted the grouping size of STA.For example, more and more as the STA related with AP, but require that the packet count of STA is constant so, just can be adjusted the grouping size of STA to guarantee that STA can in time receive data-message to be received, increase each divide into groups in the quantity of STA.So; Directly when sending GTIM message next time; New grouping size be set to receive in the data-indication message, receive simultaneously STA entrained in the data-indication message wait receive the corresponding increase of data indication information, promptly increase STA divide into groups in initiate STA wait to receive the data indication information.STA is when receiving the reception data-indication message; At first according to wherein grouping information; Calculating the to be received data corresponding with it will send in which reception data-indication message; When the stand-by period of correspondence finishes, receive the reception data-indication message that AP sends, can obtain the data-message to be received of self.

But,, dividing into groups the adjusted first round because the grouping of STA is adjusted; What possibly cause that part STA can't promptly and accurately receive self waits to receive the data indication information, and originally being in packet number like, STA33 is in 1 the grouping; Dynamic adjusted grouping size is 33; Then just to be divided into packet number be that so, STA33 just can't obtain the data to be transmitted message of self in receiving data-indication message GTIM 1 in 0 the grouping to this STA33; STA can in time adjust the reception data-indication message that oneself should receive according to new grouping information, guarantees can accurately receive corresponding reception data-indication message next time.

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

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought: STA is through calculating the stand-by period in the present embodiment; Make STA needn't go to receive the reception data-indication message that AP sends at every turn; Only need be after reaching the stand-by period; The reception data-indication message that receives current AP transmission can obtain self and belong to the reception data-indication message that STA divides into groups; Improve STA and received the efficient of data-indication message, owing in the stand-by period, can get into dormancy, thus saved the energy consumption of STA.

Embodiment 9

Referring to Figure 16, a kind of method of waiting to receive the data indication information of obtaining, the executive agent of this method comprises terminal equipment STA, specifically comprises the steps:

Step 901:STA receives expansion reception data-indication message and the auxiliary Indication message that AP sends; Wherein, What expansion received that data-indication message comprises STA in the STA grouping waits to receive data indication information, grouping information and interval information, count information at interval, and auxiliary Indication message comprises the grouping information, interval information of current STA grouping and count information at interval;

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

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

Step 902:STA obtains count information at interval from the Beacon frame;

Step 903:STA judges according to the interval count information that obtains whether the Beacon frame of current reception carries expansion and receive data-indication message, is execution in step 904 then, otherwise execution in step 907;

Particularly; STA judges whether count information is 0 at interval, if be 0, the then current Beacon frame that receives comprises the expansion reception data-indication message that STA divides into groups; If be not 0, the current Beacon frame that receives does not comprise the expansion reception data-indication message that STA divides into groups; Can be that count information equates with interval information to represent that the Beacon frame comprises the expansion reception data-indication message that STA divides into groups at interval, otherwise expression Beacon frame comprise the expansion reception data-indication message that STA divides into groups yet;

Step 904:STA obtains the STA grouping information from the current Beacon frame that receives;

Step 905:STA judges according to the grouping information of obtaining whether the expansion reception data-indication message that current Beacon frame comprises is that the expansion that self belongs to the STA grouping receives data-indication message,

If then execution in step 908;

If not, then execution in step 906;

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

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

Specifically referring to the description among the step 703-1 of embodiment 7.

Step 905-2:STA judge packet number that self place STA divides into groups whether with the grouping information of obtaining in packet number consistent,

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

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

Step 906:STA calculates to receive according to first principle according to the packet number of the interval information in the current Beacon frame that receives, count information, grouping information and self place grouping at interval and self belongs to the time that the expansion of dividing into groups receives data-indication message; Be designated as for first stand-by period; And in first stand-by period, get into battery saving mode; Do not receive the Beacon frame that AP sends, to save energy consumption, execution in step 908;

Particularly, the size of the packet number of dividing into groups in the packet number in the grouping information that the STA contrast is obtained and self place,

If the packet number that the packet number in the grouping information of obtaining is divided into groups less than self place then adopts the 4th preset formula (((GTIM adds 1 at interval) * (self place packet number of dividing into groups-obtain packet number)) * Beacon cycle) to calculate for first stand-by period;

Below, introduce the origin of the 4th preset formula:

When at interval counting is 0, can know, the current reception of STA be exactly to carry the Beacon frame that expansion receives data-indication message, and what carry is that the corresponding expansion of dividing into groups of packet number of obtaining receives data-indication message.In this present embodiment; After AP carries the Beacon frame of expansion reception data-indication message one of transmission; Will send the Beacon frame of the auxiliary Indication message of interval information institute identification number purpose; Just can send the next one then and carry the Beacon frame that expansion receives data-indication message, so STA is when calculating for first stand-by period; On the basis of the first preset formula in embodiment 8 two shared times of Beacon frame of carrying the auxiliary Indication message that sends between the Beacon frame of expansion reception data-indication message are counted in; So STA just can receive the expansion GTIM message of self place grouping after dormancy (((GTIM adds 1 at interval) * (self place packet number of dividing into groups-obtain packet number)) the * Beacon cycle) time;

Belong to the packet number of dividing into groups if the grouping in the grouping information of obtaining equals self, what then the Beacon frame of current reception carried is exactly self to belong to the expansion of dividing into groups to receive data-indication message, and first stand-by period was 0;

If the packet number that the grouping in the grouping information of obtaining is divided into groups greater than self place then adopts the 5th preset formula (((GTIM adds 1 at interval) * (packet number of packet count-obtain adds the packet number of dividing into groups in self place)) * Beacon cycle) to calculate for first stand-by period;

Below, introduce the origin of the 5th preset formula:

When at interval counting is 0, can know, carry the reception data-indication message in current receptions of the STA Beacon frame, and what carry is the reception data-indication message of the corresponding grouping of packet number of obtaining.Among this transmission embodiment; After AP carries the Beacon frame of expansion reception data-indication message one of transmission; Will send the Beacon frame of the auxiliary Indication message of interval information institute identification number purpose; Just can send the next one then and carry the Beacon frame that expansion receives data-indication message, so STA is when calculating for first stand-by period; On the basis of the second preset formula in embodiment 8 two shared times of Beacon frame of carrying the auxiliary Indication message that sends between the Beacon frame of expansion reception data-indication message are counted in; So STA just can receive the expansion GTIM message of self place grouping after dormancy (((GTIM adds 1 at interval) * (packet number of packet count-obtain adds the packet number of dividing into groups in self place)) the * Beacon cycle) time;

Step 907:STA calculates to receive according to second principle based on the packet number of the interval information in the current Beacon frame that receives, count information, grouping information and self place grouping at interval and self belongs to the time that the expansion of dividing into groups receives data-indication message; Be designated as for first stand-by period; And in first stand-by period, get into battery saving mode; Do not receive the expansion Beacon frame that AP sends, to save energy consumption, execution in step 908;

If the packet number in the grouping information of obtaining is not more than the packet number of dividing into groups in self place, then adopt the 6th preset formula (((self place packet number of dividing into groups-obtain packet number) * (interval information adds 1) adds count information at interval) * Beacon cycle) to calculate for first stand-by period;

Below, simply introduce the origin of the 6th preset formula:

When at interval counting is not 0, can know, the current reception of STA be the Beacon frame of auxiliary Indication message, carry Beacon frame that the packet number corresponding expansion of obtaining receive data-indication message with transmission next time.When formula is preset in calculating the 6th; The Beacon frame of the current auxiliary Indication message that receives and receiving carries institute's interlude between the Beacon frame of the corresponding expansion reception data-indication message of the packet number of self place dividing into groups on the 4th preset formula basic worthwhile; So; STA is after dormancy (((self place packet number of dividing into groups-obtain packet number) * (interval information adds 1) adds count information at interval) the * Beacon cycle) time; Just can receive and carry the Beacon frame that self belongs to the expansion reception data-indication message of dividing into groups;

If the packet number in the grouping information of obtaining belongs to the packet number of dividing into groups greater than self, then adopt the 7th preset formula (((packet count-(packet number of obtaining-self belong to the packet number of dividing into groups)) * (interval information adds 1) adds the interval count information)) the * Beacon cycle) calculated for first stand-by period;

Below, simply introduce the origin of the 7th preset formula:

When at interval counting is not 0, can know, the current reception of STA be the Beacon frame of auxiliary Indication message, carry Beacon frame that the packet number corresponding expansion of obtaining receive data-indication message with transmission next time.When formula is preset in calculating the 7th; The Beacon frame of the current auxiliary Indication message that receives and receiving carries institute's interlude between the Beacon frame of the corresponding expansion reception data-indication message of the packet number of self place dividing into groups on the 5th preset formula basic worthwhile; So; STA is in dormancy (((packet count-(packet number of obtaining-self belong to the packet number of dividing into groups)) * (interval information adds 1) adds count information at interval)) the * Beacon cycle) after the time, just can receive and carry the Beacon frame that self belongs to the expansion reception data-indication message of dividing into groups;

What need explanation is, step 907 is not execution after then step 906, and step 906 and 907 is steps of under condition of different, carrying out.

Step 908: when first stand-by period then, receive AP and send the Beacon frame, carry the divide into groups expansion reception data-indication message of correspondence of self place in the Beacon frame of this time reception;

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

If have, execution in step 910;

If no, execution in step 911;

For example, expansion receives STA that data-indication message carries, and to wait to receive the Bitmap of data indication information as shown in Figure 2, and the value of the Bitmap that AID 24 is corresponding is 1, and this STA of this explanation has data to need to receive.

Step 910: require AP to send data, perhaps, wait for that AP initiatively sends data, execution in step 911;

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

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

Present embodiment continuous two carry expansion receive data-indication message Beacon frame midfeather the Beacon frame of a plurality of auxiliary Indication messages; So; When calculating for second stand-by period, the time that the Beacon frame of a plurality of auxiliary Indication messages takies in the middle of counting on the basis of the 3rd preset formula in embodiment 8;

Illustrate step 901-911 at present and how to realize, as follows:

Obtain interval information, interval count information and grouping information GTIMInterval=5 in the current Beacon frame that receives; GTIM Count=4, GTIM Period=126, GTIM Size=16; GTIM Number=9; Represent that respectively whenever carrying expansion at a distance from one of the Beacon of 5 auxiliary Indication messages transmission receives the Beacon frame that data-indication message arrives, expand the Beacon that the Beacon that receives data-indication message also wants 4 the auxiliary Indication messages in interval, have 126 groupings apart from send to carry next time; Every group of 16 STA, what be about to send is that to carry packet number be the Beacon frame that the expansion of 9 grouping receives data-indication message next time;

Here, the AID that supposes STA is 1, then according to the grouping information that receives; With 1 divided by 16 and round after obtain 0, promptly should to receive packet number be that 0 corresponding expansion receives data-indication message to STA, promptly receives expansion and receive data-indication message GTIM 0; And grouping information from the Beacon frame of current reception and interval information, at interval count information can be known, current what receive is the Beacon frame of an auxiliary Indication message, and distance is sent next time and carried the Beacon frame that extension receives data-indication message and also want the Beacon frame of 4 auxiliary Indication messages at interval; What be about to send is that to carry packet number be the Beacon frame that the expansion of 9 grouping receives data-indication message next time; So, can be calculated by the above-mentioned the 6th preset formula, STA is at 706 Beacon week after dates; Can receive and self belong to the expansion reception data-indication message of dividing into groups; And at these 706 Beacon in the cycle, STA can get into battery saving mode, thereby saves energy consumption; STA receives data-indication message GTIM 0 in the expansion that 706 Beacon week after dates receive, as among Fig. 8 by shown in the last figure, STA receives data-indication message GTIM 0 according to this expansion; Can know that AID 1 corresponding Bit value is 0; Then there are not data to be transmitted between AP and this STA, so STA gets into the fourth class and treats the time; Treat the time then up to the fourth class, receive once more and self belong to the expansion reception data-indication message of dividing into groups.

The beneficial effect that technical scheme reached that present embodiment adopted is the same with the beneficial effect that embodiment 8 is reached; In addition; The embodiment of the invention is after the expansion that STA of every reception divides into groups receives data-indication message; After just receiving an interval count information value auxiliary indication information, the expansion that receives next STA grouping again receives data-indication message, thereby strengthens the blanking time of STA reception expansion reception data-indication message; More be applicable to the application scenarios of and low data bulk very insensitive, and more help the STA power saving communication delay.

Embodiment 10

Referring to Figure 17, a kind of method of waiting to receive the data indication information of obtaining, the executive agent of this 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, said grouping information comprises: one or more in the group character hyte information in packet count, packet number, grouping size and the association identification;

Auxiliary Indication message comprises grouping information, interval information and interval count information; Particularly, said interval information is indicated to the said auxiliary Indication message number of sending between the reception data-indication message of next round transmitting apparatus grouping; Said interval count information changes between said interval information value 0, and indicating current message is said reception data-indication message or said auxiliary Indication message;

Steps A 02:STA obtains count information at interval from the Beacon frame;

Steps A 03:STA judges according to the interval count information that obtains whether the Beacon frame of current reception carries expansion and receive data-indication message, is execution in step A 04 then, otherwise execution in step A 07;

This interval count information GTIM Count upwards counts since 0 in present embodiment, up to counting GTIM Count equates that with the value of GTIM Interval then the method for the described judgement of this step is at interval:

STA judges whether count information GTIM Count equates with the value of GTIM Interval at interval; If equate; The then current Beacon frame that receives comprises the expansion reception data-indication message that STA divides into groups; If unequal, the current Beacon frame that receives does not comprise the expansion reception data-indication message that STA divides into groups;

This is counted GTIM Count at interval and begins downward counting from interval information GTIM Interval in present embodiment, and up to counting GTIM Count position 0 at interval, then the method for the described judgement of this step is:

STA judges whether count information GTIM Count is 0 at interval; If be 0; The then current Beacon frame that receives comprises the expansion reception data-indication message that STA divides into groups, if be not 0, the current Beacon frame that receives does not comprise the expansion reception data-indication message that STA divides into groups;

Steps A 04:STA obtains the expansion reception data-indication message that STA divides into groups from the current Beacon frame that receives;

Steps A 05:STA judges whether current expansion of obtaining receives data-indication message is that the expansion that self belongs to the STA grouping receives data-indication message,

If, execution in step A08 then;

If not, execution in step A06 then;

The described method of step 905 is the same among the judgement transmission of this step and the embodiment 9, just repeats no more here.

Steps A 06:STA calculates to receive according to first principle according to the packet number of the interval information in the current Beacon frame that receives, count information, grouping information and self place grouping at interval and self belongs to the time that the expansion of dividing into groups receives data-indication message; Be designated as for first stand-by period; And in first stand-by period, get into battery saving mode; Do not receive the Beacon frame that AP sends, to save energy consumption, execution in step A08;

If the packet number that the packet number in the grouping information of obtaining is divided into groups less than self place then adopts the 9th preset formula ((self place packet number of dividing into groups-obtain packet number) * Beacon cycle) to calculate for first stand-by period;

Below, introduce the origin of the 9th preset formula:

This counts GTIM Count at interval since 0 counting upwards in present embodiment; And when at interval counting GTIM Count and equating with GTIM Interval; Perhaps; This is counted GTIMCount at interval and begins downward counting from count information GTIM Interval in present embodiment, and GTIM Count is 0 o'clock, and STA was in the indication information broadcasting phase of AP; In this broadcasting phase; AP carries the Beacon frame that expansion receives data-indication message with continuous transmission, and the current reception of STA is exactly to carry the Beacon frame that expansion receives data-indication message, and what carry is that the corresponding expansion of dividing into groups of packet number of obtaining receives data-indication message; Because the packet number that self place STA divides into groups is less than the current packet number of obtaining, i.e. self place STA expansion of dividing into groups receives data-indication message will transmission after the current expansion that receives receives data-indication message; So; SAT is as long as receive the individual Beacon frame of the (self place packet number of dividing into groups-obtain packet number) after this; Can therefrom obtain self to belong to the expansion reception data-indication message that STA divides into groups; STA is after dormancy ((self place packet number of dividing into groups-obtain packet number) the * Beacon cycle) time so, just can receive the expansion reception data-indication message of dividing into groups in self place;

Belong to the packet number of dividing into groups if the packet number in the grouping information of obtaining equals self, what then the Beacon frame of current reception carried is exactly self to belong to the expansion of dividing into groups to receive data-indication message, and first stand-by period was 0;

If the packet number that the packet number in the grouping information of obtaining is divided into groups greater than self place then adopts the tenth preset formula ((packet number of packet count-obtain adds interval information) adds (packet number of obtaining adds 1)) the * Beacon cycle) calculated for first stand-by period;

Below, introduce the origin of the tenth preset formula:

This counts GTIM Count at interval since 0 counting upwards in present embodiment; And when at interval counting GTIM Count and equating with GTIM Interval; Perhaps; This is counted GTIMCount at interval and begins downward counting from count information GTIM Interval in present embodiment, and GTIM Count is 0 o'clock, and STA was in the indication information broadcasting phase of AP; In this broadcasting phase; AP carries the Beacon frame that expansion receives data-indication message with continuous transmission, and the current reception of STA is exactly to carry the Beacon frame that expansion receives data-indication message, and what carry is that the corresponding expansion of dividing into groups of packet number of obtaining receives data-indication message; Because the packet number that self belongs to the STA grouping is greater than the current packet number of obtaining; Be that expansion that self place STA divides into groups receives data-indication message and before the current expansion that receives receives data-indication message, sends, STA because network shakiness or dormancy time be long etc. factor missed, go to receive the expansion that self place STA divides into groups in the cycle and receive data-indication message so STA need broadcast at the next wheel of AP; So; SAT just can get into next wheel at ((packet count-obtain packet number) adds interval information) * Beacon week after date and broadcast the cycle; So; STA is waiting for ((packet number of packet count-obtain adds interval information) adds (packet number of obtaining adds 1)) the * Beacon cycle) after the time, just can receive the expansion GTIM message of self place grouping;

Steps A 07:STA calculates to receive according to second principle based on the packet number of the interval information among the current Beacon that receives, count information, grouping information and self place grouping at interval and self belongs to the time that the expansion of dividing into groups receives data-indication message; Be designated as for first stand-by period; And in first stand-by period, get into battery saving mode; Do not receive the expansion Beacon frame that AP sends, to save energy consumption, execution in step A08;

This counts GTIM Count at interval since 0 counting upwards in present embodiment; And counting at interval GTIM Count, calculated for first stand-by period through the 11 preset formula (((interval information-interval count information) adds the packet number that self belongs to grouping) * Beacon cycle) when unequal with GTIM Interval.

Particularly; This counts GTIM Count at interval since 0 counting upwards in present embodiment; And count at interval GTIM Count and GTIM Interval when unequal; STA is in the no indication information of AP in the broadcasting phase, and in this broadcasting phase, AP does not carry the Beacon frame that expansion receives data-indication message with continuous transmission GTIM Interval; Interval count information GTIM Count and interval information GTIM Interval from the Beacon frame that does not carry expansion reception data-indication message of current reception can know; This no indication information phase of broadcasting will be passed through (interval information-interval count information) * Beacon week after date and finished; Get into indication information and broadcast the phase; In this indication information broadcasting phase, AP transmission continuously carries the Beacon frame of the expansion reception data-indication message of each STA grouping, and STA just can receive self place expansion reception data-indication message in this Indication message broadcasting phase; Again because; In this indication information broadcasting phase, AP receives data-indication message according to the expansion that the packet number order of STA grouping or each STA of inverted order transmission divide into groups, so in this indication information broadcasting phase; STA need not receive each and carry the Beacon frame that expansion receives data-indication message; Only need in this indication information broadcast phase, wait for (the packet number * Beacon that self place STA divides into groups in the time of the cycle after, just can receive the expansion reception data-indication message of dividing into groups in self place;

From the above mentioned; STA is after receiving the Beacon frame that does not contain expansion reception data-indication message; After waiting for that altogether ((interval information-interval count information) adds the packet number of dividing into groups in self place) * Beacon is in the time of the cycle, just can receive the expansion reception data-indication message of self place grouping.

This is counted GTIM Count at interval and begins downward counting from count information GTIM Interval in present embodiment; And GTIM Count is not 0 o'clock, obtains for first stand-by period through the 12 preset formula (counting adds the packet number that self belongs to grouping at interval) * Beacon computation of Period;

Wherein, the 12 preset formula is identical with the principle of the first preset formula, just; When GTIM Count when count information GTIM Interval begins to count downwards; Receive in the broadcasting phase in no indication information and not carry after expansion receives data-indication message and dislike the Beacon frame, broadcast the phase through GTIM Count*Beacon cycle the no indication information that just is through with, and get into the indication information broadcasting phase; So when calculating for first stand-by period; Owing to the difference of counting mode causes computing formula slightly different, but principle is the same, just repeats no more here.

Steps A 08: when first stand-by period then, receive AP and send the Beacon frame, carry the divide into groups expansion reception data-indication message of correspondence of self place in the Beacon frame of this time reception;

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

If have, execution in step A10;

If no, execution in step A11;

Steps A 10: require AP to send data, perhaps, wait for that AP initiatively sends data, execution in step A11;

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

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

Particularly, AP is according to ((packet count add at interval count information) * Beacon cycle)) cycle wheel of length broadcasts the expansion that each STA divides into groups and receives data-indication message.So STA is in that to receive for the first time the expansion of self place dividing into groups every at a distance from ((packet count adds count information at interval) * Beacon cycle) after receiving data-indication message) after will receive the expansion of self place dividing into groups once more and receive data-indication message.

The beneficial effect that technical scheme reached that present embodiment adopted is the same with the beneficial effect that embodiment 8 is reached; In addition; Present embodiment is after the expansion of receiving all STA groupings receives data-indication message; Just receive a count information value auxiliary indication information at interval, the expansion that receives the STA grouping of next round again receives data-indication message, thereby strengthens the blanking time that STA receives expansion reception data-indication message; More be applicable to the application scenarios of and low data bulk very insensitive, and more help the STA power saving communication delay.

Embodiment 11

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

Receiver module S01; Be used to receive the reception data-indication message of a device packets; Receive data-indication message comprise terminal device in the device packets wait receive data indication information and grouping information, wait to receive whether each equipment has data to wait to receive in the grouping of data indication information indicating equipment;

Wherein, grouping information comprises packet number and the packet count that current device divides into groups; Perhaps,

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

Judge module S02 is used for judge receiving the reception data-indication message whether data-indication message divides into groups for this group equipment based on grouping information;

The first Executive Module S03 is used in the judged result of judge module S02 when being, according to waiting that receiving the data indication information carries out DRP data reception process;

The second Executive Module S04; Be used in the judged result of judge module S02 when not being; Calculate to receive the required stand-by period of reception data-indication message that this group equipment is divided into groups according to grouping information, and when the stand-by period arrives, once more the reception data-indication message of receiving equipment grouping.

Referring to Figure 18 b; A kind of device of waiting to receive the data indication information that obtains; This device is specifically corresponding with the terminal equipment of supporting 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 is used to receive message, and message comprises grouping information, interval count information and interval information;

The first judge module D02 is used to judge that the message that receiver module D01 receives is the reception data-indication message or the auxiliary Indication message of device packets;

The first Executive Module D03; The judged result that is used at the first judge module D02 is when assisting Indication message, according to the required stand-by period of reception data-indication message of the grouping information in the auxiliary Indication message, interval information and this group equipment of interval count information calculating reception;

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

The second Executive Module D05 is used in the judged result of the second judge module D04 during for the reception data-indication message of the device packets at this terminal equipment place, receives the data indication information and carries out DRP data reception process according to receiving treating in the data-indication message;

The 3rd Executive Module D06; Be used in the judged result of the second judge module D04 when not being the reception data-indication message of device packets at this terminal equipment place; Calculate the required stand-by period of reception data-indication message of the device packets at this terminal equipment of reception place according to grouping information, interval information and interval count information; And when the stand-by period arrives, the receiving equipment reception data-indication message of dividing into groups once more.

Wherein, Interval information is indicated the auxiliary Indication message number of sending between the reception data-indication message of adjacent two device packets; Count information changes between the interval information value 0 at interval, indicates current message for receiving data-indication message or auxiliary Indication message; Perhaps

Interval information is indicated to the auxiliary Indication message number of sending between the reception data-indication message of next round transmitting apparatus grouping; Count information changes between the interval information value 0 at interval, indicates current message for receiving data-indication message or auxiliary Indication message.

The beneficial effect that the embodiment of the invention is brought is: STA is through calculating the stand-by period in the present embodiment; Make STA needn't go to receive the reception data-indication message that AP sends at every turn; Only need be after reaching the stand-by period; The reception data-indication message that receives current AP transmission can obtain self and belong to the reception data-indication message that STA divides into groups, and has improved the efficient of STA reception data-indication message, owing in the stand-by period, getting into dormancy; Thereby saved the energy consumption of STA; In addition, STA also can receive auxiliary Indication message in the process of the reception data-indication message that receives the STA grouping, and this auxiliary Indication message makes that the stand-by period of STA when receiving the reception data-indication message that self belongs to grouping is elongated; More be applicable to the application scenarios of and low data bulk very insensitive, and more help the STA power saving communication delay.

Embodiment 12

Referring to Figure 19, a kind of device of waiting to receive the data indication information that obtains, 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, introduce the concrete function of each module below in detail:

Receiver module B01; The reception data-indication message that is used for the receiving equipment grouping; Receive data-indication message comprise terminal device in the device packets wait receive data indication information and grouping information, wait to receive whether each equipment has data to wait to receive in the grouping of data indication information indicating equipment;

Acquisition module B02 is used for obtaining grouping information from receiving data-indication message;

Judge module B03 is used for judging according to grouping information whether receive data-indication message is the reception data-indication message that self belongs to device packets,

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

The second Executive Module B05 is used for obtaining the reception data indication information of self according to receiving data-indication message;

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

Particularly, judge module B02 comprises:

Acquiring unit B021 is used to obtain the packet number that self belongs to device packets;

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

The first Executive Module B04 comprises:

The first acquiring unit B041 is used to obtain the packet number that self belongs to device packets;

The first judging unit B042 is used for judging the magnitude relationship of packet number of packet number and the grouping information of self place device packets;

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

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

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

When the reception data-indication message was expanded packet data message to be transmitted, receiver module B01 also was used between the reception data-indication message that receives the neighbouring device grouping, receiving auxiliary Indication message;

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

Interval information is indicated the auxiliary Indication message number of sending between the reception data-indication message of adjacent two device packets, and count information changes between the interval information value 0 at interval, indicates current message for receiving data-indication message or auxiliary Indication message;

Correspondingly, the first Executive Module B04 comprises:

Second acquisition unit B04A1 is used for obtaining interval information, interval count information from the message of current reception;

The 3rd acquiring unit B04A2 is used to obtain the packet number that self belongs to device packets;

The second judging unit B04A3 is used for judging whether the interval counting of count information is zero at interval;

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

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

The second performance element B04A6; Be used for when the packet number of grouping information belongs to the packet number of device packets greater than self; Calculated for first stand-by period according to the packet number in the grouping information, packet count, the packet number that self belongs to device packets, the interval message that reaches in the 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 that self belongs to device packets)) * beacon frame cycle;

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

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

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

Computing unit B06; Also specifically be used for according to grouping information packet count, interval information, the interval information in the count information calculated for second stand-by period according to the 8th preset formula at interval, the 8th preset formula is: packet count * (interval information adds 1) the * beacon frame cycle.

When the reception data-indication message was expanded packet data message to be transmitted, receiver module B01 also was used for after the reception data-indication message of receiving the armamentarium grouping, receiving auxiliary Indication message;

Correspondingly, the first Executive Module B04 comprises:

The second judging unit B04A3 is used for judging whether count information is zero at interval;

The 5th performance element B04B1; Be used for when the packet number of said grouping information during less than the packet number of said self place device packets; According to the packet number of the packet number in the said grouping information, said self place device packets, and said interval information, at interval count information calculated for first stand-by period according to the 9th preset formula, the said the 9th preset formula is: (self place divide into groups packet number-packet number) * beacon frame cycle;

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

The 7th performance element B04B3; Be used for when the judged result of said second judging unit is non-vanishing; Packet number according to said interval information, interval count information and self place grouping calculated for first stand-by period according to the 12 preset formula, and the said the 12 preset formula is: (the interval counting adds self and belongs to the packet number of dividing into groups) * beacon frame cycle.

Correspondingly, the first Executive Module B04 comprises:

Second acquisition unit B04A1 is used for receiving data-indication message from expansion and obtains interval information, interval count information;

The 5th judging unit B04C1 is used to judge whether said interval count information equates with said interval information;

The 3rd judging unit B04C2, when the judged result of said the 5th judging unit B04C2 when equating, with judge packet number in the said grouping information be less than or greater than the packet number of said self place device packets;

The 8th performance element B04C3; Be used in the judged result of said the 5th judging unit B04C2 when being inequality; The packet number of dividing into groups according to said interval information, interval count information and self place calculated for first stand-by period according to the 11 preset formula, and the said the 11 preset formula is: ((interval information-interval count information) adds self and belong to the packet number of dividing into groups) * beacon frame cycle.

Correspondingly; Computing unit B06; Specifically be used for according to said grouping information packet count, interval information, the interval information in the count information calculated for second stand-by period according to the 13 preset formula at interval, the said the 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 that the association identification of self is big or small divided by the grouping in the grouping information, obtain the packet number that self belongs to 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 self the group character position of association identification; Or

Acquiring unit B021, the first acquiring unit B041 and the 3rd acquiring unit B04A2 obtain the packet number that self belongs to device packets according to the group character that self distributes.

The beneficial effect that the embodiment of the invention is brought is: STA is through calculating the stand-by period in the present embodiment; Make STA needn't go to receive the reception data-indication message that AP sends at every turn; Only need be after reaching the stand-by period, receive reception data-indication message that current AP sends and can obtain the reception data-indication message that self place STA divides into groups, improved the efficient that STA receives data-indication message; Owing in the stand-by period, can get into dormancy, thereby save the energy consumption of STA.

Embodiment 13

Referring to Figure 20; A kind ofly send and obtain the system that waits to receive the data indication information, said system comprises and sends the device C0 that waits to receive the data indication information and obtain the device C1 that waits to receive the data indication information, in concrete the application; The device C0 that this transmission waits to receive the data indication information specifically can be AP; Obtaining the device C1 that waits to receive the data indication information can be STA, and the present invention does not do concrete qualification to this, introduce 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 the embodiment 5, just repeats no more here, and in addition, this device also comprises communication module, is used for and obtains waiting that the device C1 that receives the data indication information carries out data communication;

Obtain the device C1 that waits to receive the data indication information and comprise all modules described in the embodiment 11, just repeat no more here, in addition, this device also comprises communication module, is used for waiting that the device C0 that receives the data indication information carries out data communication with sending.

Through terminal equipment STA is divided into groups; Send the realization of technical scheme of the reception data-indication message of each device packets successively; The reception data-indication message message-length that makes each STA divide into groups is controlled; Improved reliability of information transmission,, promptly can transmit the information to be transmitted of a large amount of STA through increasing the quantity that STA divides into groups; In addition, receive the reception data-indication message that STA divides into groups, from receive data-indication message, obtain the grouping information that STA divides into groups; Judge that according to the grouping information of obtaining whether said reception data-indication message is the reception data-indication message that self place STA divides into groups, if that then from said reception data-indication message, obtains self waits to receive the data indication information; If not; Calculated for first stand-by period, after first stand-by period arrived, receive data-indication message; Afterwards; Calculated for second stand-by period; And after second stand-by period arrived; Receive the realization of data-indication message technical scheme, just can from the reception data-indication message that each STA divides into groups, obtain the reception data-indication message of dividing into groups in self place through simple judgement and after waiting for the regular hour rapidly, and in the reception data-indication message of self place grouping, obtain self wait to receive the data indication information.

Send according to packet number order from small to large when the formula of relevant calculation time supposes all that as if no specified otherwise AP sends the reception data-indication message of dividing into groups among the above embodiment; And the variation of count information is from big to small at interval; The reception data-indication message of in fact dividing into groups also can be sent according to packet number order from big to small, and the variation of count information also can be from small to large at interval, for this reason; The relevant calculation formula need be made modify; To those skilled in the art, this corresponding modification is conspicuous, does not specify one by one here.

The expansion that branch group of received data-indication message of dividing into groups about STA among the above embodiment and STA divide into groups receives a kind of the next call that data-indication message is the reception data-indication message of STA grouping; Its essence same meaning; All be meant the STA pairing reception data-indication message of dividing into groups; This reception data-indication message be used to indicate the pairing STA of this reception data-indication message divide into groups in STA wait to receive the data indication information, saidly wait to receive the indication of data indication information and should whether have data to wait to receive by the interior terminal equipment of receptions data-indication message corresponding equipment grouping.

All or part of content in the technical scheme that above embodiment provides can realize that through software programming its software program is stored in the storage medium that can read, storage medium for example: the hard disk in the computer, CD or floppy disk.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a notice waits to receive the method for data indication information, it is characterized in that said method comprises:

Terminal equipment is divided into groups;

Send the reception data-indication message of each device packets; Each receive data-indication message comprise this receptions data-indication message corresponding equipment divide into groups in terminal equipment wait to receive data indication information and grouping information, saidly wait to receive the indication of data indication information and should whether have data to wait to receive by the interior terminal equipment of reception data-indication message corresponding equipment grouping.

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

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

Span according to the association identification of terminal equipment in the association identification of terminal equipment and the said device packets is divided into groups terminal equipment.

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

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

Terminal equipment is divided into groups in group character position according in the association identification of terminal equipment.

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

Be terminal equipment allocation packets sign;

According to said group character terminal equipment is divided into groups.

5. method according to claim 1 is characterized in that, said grouping information comprises packet number and the packet count that current device divides into groups; Perhaps

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

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

6. according to each described method of claim 1 to 5, it is characterized in that the reception data-indication message of said each device packets also comprises interval information and interval count information,

The reception data-indication message of said each device packets of transmission also comprises:

After the reception data-indication message of a device packets of every transmission, send one or more auxiliary Indication messages;

7. according to each described method of claim 1 to 5, it is characterized in that the reception data-indication message of said each device packets also comprises interval information and interval count information,

After the reception data-indication message of said each device packets of transmission, also comprise:

Send one or more auxiliary Indication messages;

8. a notice waits to receive the device of data indication information, it is characterized in that said device comprises: grouping module and sending module;

Said grouping module is used for terminal equipment is divided into groups;

Said sending module; Be used to send the reception data-indication message of each device packets; Each receive data-indication message comprise this receptions data-indication message corresponding equipment divide into groups in terminal equipment wait to receive data indication information and grouping information, saidly wait to receive the indication of data indication information and should whether have data to wait to receive by the interior terminal equipment of reception data-indication message corresponding equipment grouping.

9. device according to claim 8 is characterized in that, said grouping module comprises:

Confirm the unit, be used for confirming the span of the association identification of terminal equipment in packet count and each device packets of device packets;

Grouped element is used for according to the span of the association identification of terminal equipment in the association identification of terminal equipment and the said device packets terminal equipment being divided into groups.

10. device according to claim 8 is characterized in that, said grouping module comprises:

The unit is set, is used for predetermined bit hyte with the association identification of terminal equipment as group character;

Grouped element is used for according to the group character position of the association identification of terminal equipment terminal equipment being divided into groups.

11. device according to claim 8 is characterized in that, said grouping module comprises:

Allocation units are used to terminal equipment allocation packets sign;

Grouped element is used for according to said group character terminal equipment being divided into groups.

12. device according to claim 8 is characterized in that, said grouping information comprises packet number and the packet count that current device divides into groups; Perhaps

13. to 12 each described devices, it is characterized in that according to Claim 8 the reception data-indication message of said device packets also comprises interval information and interval count information;

Said sending module is used for after the reception data-indication message of a device packets of every transmission, sends one or more auxiliary Indication messages;

14. to 12 each described devices, it is characterized in that according to Claim 8 the reception data-indication message of said device packets also comprises interval information and interval count information;

Said sending module is used for after the reception data-indication message of sending each device packets, sends one or more auxiliary Indication messages;

15. to 14 each described devices, it is characterized in that according to Claim 8 the device that said notice waits to receive the data indication information is access point AP.

16. a terminal equipment obtains the method for waiting to receive the data indication information, it is characterized in that, said method comprises:

17. method according to claim 16 is characterized in that, it is characterized in that, said grouping information comprises packet number and the packet count that current device divides into groups; Perhaps,

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

18. one kind is obtained the device of waiting to receive the data indication information, it is characterized in that, said device comprises: receiver module, judge module, first Executive Module and second Executive Module;

19. device according to claim 18 is characterized in that, it is characterized in that, said grouping information comprises packet number and the packet count that current device divides into groups; Perhaps,

20., it is characterized in that said obtaining waits to receive the terminal equipment of the device of data indication information for support 802.11 agreements according to each described device of claim 18 to 19.

21. a terminal equipment obtains the method for waiting to receive the data indication information, it is characterized in that, said method comprises:

22. method according to claim 21 is characterized in that, said grouping information comprises packet number and the packet count that current device divides into groups; Perhaps,

23. method according to claim 21; It is characterized in that said interval information indicates the said auxiliary Indication message number of sending between the reception data-indication message of adjacent two device packets; Said interval count information changes between said interval information value 0, and indicating current message is said reception data-indication message or said auxiliary Indication message.

24. method according to claim 21; It is characterized in that; Said interval information is indicated to the said auxiliary Indication message number of sending between the reception data-indication message of next round transmitting apparatus grouping; Said interval count information changes between said interval information value 0, and indicating current message is said reception data-indication message or said auxiliary Indication message.

25. one kind is obtained the device of waiting to receive the data indication information, it is characterized in that, said device comprises: receiver module, first judge module, first Executive Module, second judge module, second Executive Module and the 3rd Executive Module;

26. device according to claim 25; It is characterized in that; Said interval information is indicated the said auxiliary Indication message number of sending between the reception data-indication message of adjacent two device packets; Said interval count information changes between said interval information value 0, and indicating current message is said reception data-indication message or said auxiliary Indication message.

27. device according to claim 25; It is characterized in that; Said interval information is indicated to the said auxiliary Indication message number of sending between the reception data-indication message of next round transmitting apparatus grouping; Said interval count information changes between said interval information value 0, and indicating current message is said reception data-indication message or said auxiliary Indication message.

28., it is characterized in that said obtaining waits to receive the terminal equipment of the device of data indication information for support 802.11 agreements according to each described device of claim 25 to 27.