CN103178943A - Method, device and system for link adaption - Google Patents
Method, device and system for link adaption Download PDFInfo
- Publication number
- CN103178943A CN103178943A CN2011104396023A CN201110439602A CN103178943A CN 103178943 A CN103178943 A CN 103178943A CN 2011104396023 A CN2011104396023 A CN 2011104396023A CN 201110439602 A CN201110439602 A CN 201110439602A CN 103178943 A CN103178943 A CN 103178943A
- Authority
- CN
- China
- Prior art keywords
- cluster
- frame
- ack
- terminal
- acknowledgement frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1614—Details of the supervisory signal using bitmaps
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Communication Control (AREA)
Abstract
The invention discloses a method, a device and a system for link adaption. The method includes the following steps: an access point AP receives data frames from a terminal STA; the access point AP records confirmation message ACK which is sent by each terminal and received by the data frames; the access point AP sends a cluster confirmation frame Cluster ACK to the terminal STA; and the cluster confirmation frame Cluster ACK, after being received by the terminal STA, is used to guarantee whether the data frames sent can be successfully received by the access point AP, wherein the cluster confirmation frame consists of the confirmation message ACK and terminal identification corresponding to the confirmation frame. The method adopts a response control frame-Cluster ACK which enables the access point AP to use a Cluster ACK to response data sent by a plurality of STAs. Therefore, the network cost brought by ACK can be lowered and the capability of the system can be improved. The device and the system for achieving the above method are also provided.
Description
Technical field
The present invention relates to the communications field, particularly be used for the methods, devices and systems of link circuit self-adapting in the communications field.
Background technology
In in the standard of present WLAN (wireless local area network), traditional acknowledgement mechanism is the DATA/ACK pattern, i.e. all need to receive that an acknowledgement frame ACK confirms whether grouping or data send successfully after grouping of the every transmission of transmit leg or data.The DATA/ACK exchange has fixing overhead.This expense comprises competing cycle, the overhead relevant to sending this frame itself, the radio frequency conversion duration (SIFS) of receiving terminal and the transmission time of ACK frame.Although overhead is fixed basically, the time that sends Frame is unfixing.The time that sends Frame is longer, and fixed overhead is just less with respect to the ratio of whole transmission duration, and the time that sends Frame is shorter, and fixed overhead is just larger with respect to the ratio of whole transmission duration.
At sensor network, under the scapes such as intelligent grid, the grouping that terminal STA s sends is usually shorter, and therefore, traditional DATA/ACK pattern can be brought very large overhead.Therefore, reduce the overhead that traditional ACK brings and to promote network performance.
Summary of the invention
The embodiment of the present invention provides method and the access point AP that sends data in a kind of WLAN (wireless local area network), and the overhead that minimizing ACK brings is to promote network performance.
On the one hand, the embodiment of the present invention provides a kind of method that sends data in WLAN (wireless local area network), comprising:
The Frame that access point AP receiving terminal STA sends;
Described access point AP records the confirmation information A CK whether described Frame that each terminal sends successfully receives;
Described access point AP is to described terminal STA signalling of bouquet acknowledgement frame Cluster ACK, and after described acknowledgement frame Cluster ACK is used for being received by described terminal STA, each terminal is to determine whether the described Frame that sends is successfully received by described access point AP; Wherein said cluster acknowledgement frame comprises described confirmation ACK and terminal iidentification corresponding to described acknowledgement frame.
On the other hand, the embodiment of the present invention provides a kind of access point apparatus AP, comprising:
Receiving element is used for the Frame that receiving terminal STA sends;
Cluster acknowledgement frame Cluster ACK generation unit, the confirmation information A the CK whether described Frame that is used for sending according to each terminal successfully receives generates cluster acknowledgement frame Cluster ACK, after described acknowledgement frame Cluster ACK is used for being received by described terminal STA, each terminal is to determine whether the described Frame that sends is successfully received by described access point AP, and wherein said cluster acknowledgement frame comprises described confirmation ACK and terminal iidentification corresponding to described acknowledgement frame;
Transmitting element is used for sending described cluster acknowledgement frame Cluster ACK to described terminal STA.
Based on technique scheme, the method and apparatus of the embodiment of the present invention adopts new control frame---the Cluster ACK that replys, and makes AP can use a Cluster ACK frame to reply simultaneously the data that a plurality of STAs send to its.Thereby reduce the network overhead that ACK brings, improve the performance of system.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, the below will do to introduce simply to the accompanying drawing of required use in the embodiment of the present invention, apparently, below described accompanying drawing be only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the general format schematic diagram of the Cluster ACK frame of the embodiment of the present invention.
Fig. 2 is the method flow diagram that the embodiment of the present invention sends data.
Fig. 3 is the structural representation of Cluster ACK frame one instantiation.
Fig. 4 is the structural representation of the another example of Cluster ACK frame.
Fig. 5 is the Cluster ACK frame structural representation of an example again.
Fig. 6 is the structural representation of Cluster-added ACK frame one instantiation.
Fig. 7 is the structural representation of embodiment of the present invention access point apparatus.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
The below will describe the method that WLAN (wireless local area network) sends data that is used for according to the embodiment of the present invention.
The embodiment of the present invention can be to carry out transfer of data between website in WLAN (STA) and access point (AP, Access Point).Can think that sometimes AP is a special website.Can think website (STA) and access point transmitting terminal and receiving terminal each other.So device can be a STA or AP in the following embodiments, system can be the WLAN. that website (STA) and access point (AP, Access Point) form
Consult Fig. 1, the embodiment of the present invention adopts a new frame cluster acknowledgement frame Cluster ACK, this Cluster ACK frame comprises the frame control information Frame Control field that 2Byte is long, the duration Duration/ID field that 2Byte is long, the Frame Check Sequence FCS that frame body and 4Byte are long.Wherein, the Frame Control field of Cluster ACK frame is compared different from existing ACK frame, the subtype indicated value Subtype value of ACK frame is 1101, and the Subtype value of Cluster ACK frame can indicate new frame type with this for a certain value in 0000-0110.Certainly in practical operation, described Subtype value value can be stipulated in system, consults or provides between AP and STA, reaches synchronously to get final product, and aforementioned is an embodiment.The Duration/ID field of Cluster ACK frame represents the duration take us as unit.Frame is in order to the reception condition of reply data frame.The FCS field comprises the CRC of a 32bit, in order to the integrality of verification grouping.
Adopt above-mentioned.Cluster ACK frame, AP does not reply one by one to each Frame, unifies to reply but send at special time some Frames that one or more STAs that a Cluster ACK frame receives in to a period of time send.AP safeguards an information list, after successfully receiving a Frame, records the ID of sending node of this Frame and the numbering of this Frame in list.Before sending Cluster ACK frame, AP writes frame with the information in information list by certain rule.STAs understands the interior information of frame by certain rule after receiving Cluster ACK frame, determine whether the own Frame that sends is correctly received.
Consult Fig. 2, the embodiment of the present invention sends the method flow diagram of data, and described method comprises:
S101, the Frame that access point AP receiving terminal STA sends;
S103, described access point AP record the confirmation information A CK whether described Frame that each terminal sends successfully receives;
S105, described access point AP is to described terminal STA signalling of bouquet acknowledgement frame Cluster ACK, and after described acknowledgement frame Cluster ACK is used for being received by described terminal STA, each terminal is to determine whether the described Frame that sends is successfully received by described access point AP; Wherein said cluster acknowledgement frame comprises at least two described confirmation ACK, also comprises the terminal iidentification corresponding with described acknowledgement frame ACK.
Based on technique scheme, the method for the embodiment of the present invention adopts new control frame---the Cluster ACK that replys, and makes AP can use a Cluster ACK frame to reply simultaneously the data that a plurality of STAs send to its.Thereby reduce the network overhead that ACK brings, improve the performance of system.
Implement method is introduced below in conjunction with the difference of different scenes.
Access point apparatus AP communicates by letter with STA, and after the Frame that reception STA sends, AP replys Cluster ACK frame.If what communicate by letter with AP is n terminal, the frame of Cluster ACK frame is comprised of 1Byte long Cluster-ID field and long " confirmation " field of " n " Byte, and " n " is the quantity of an identifiable node of Cluster ACK frame.Here advise n the most 8 or 16.In concrete enforcement, if system's support, the number of terminals restriction of can be not the transmission of cluster ACK not being supported, the present embodiment and follow-up embodiment be all take 8 terminals as example, but can be simply by what length of duration that increases frame be increased to 16 or other need to length.Each terminal can be supported the ack of 8 frames, and the confirmation information A CK (confirmation field) of every corresponding terminal is 1 byte, and wherein confirmation ACK is answered in 88 of bit indications, successively the reception condition of 8 Frames of counterpart terminal transmission.Each embodiment is introduced with the situation of feeding back simultaneously 8 Frames.But by increasing frame length, can simply be increased to the reception condition that sends simultaneously 16 Frames of a terminal, perhaps the Frame reception condition of other quantity.
In the present embodiment, the structure of Cluster ACK frame as shown in Figure 3, Cluster ACK frame comprises the Frame Control field that 2Byte is long, the Duration/ID field that 2Byte is long, the FCS field that frame and 4Byte are long.
Frame is comprised of 1Byte long Cluster-ID field and long " confirmation " field of " n " Byte, and " n " is the quantity of an identifiable node of Cluster ACK frame.Wherein Cluster-ID is used for the affiliated group sign of organizing of terminal corresponding to described confirmation ACK that expression sends described Frame.Each Byte in " confirmation " field represents the reception condition of data that STA sends.Confirmation ACK is documented in cluster acknowledgement frame main body body part, and k confirmation ACK is the confirmation information A CK of k terminal in described group; 1≤k≤n wherein.The reception condition that represents to organize the data that STA sends of the 1st as: first Byte, second Byte represents to organize the reception condition of the data that STA sends of interior the 2nd, and k Byte represents to organize the reception condition of the data that STA sends of interior k.Each bit in Byte represents the confirmation information A CK of the Frame that this STA sends, and " 0 " expression AP receives this Frame failure, and " 1 " expression AP receives this Frame success.As: in a Byte, the 1st bit is " 0 ", represents that first Frame of this STA transmission is accepted unsuccessfully by AP, and in a Byte, the 8th bit is " 1 ", represents that the 8th Frame of this STA transmission accepted successfully by AP.Certainly the value that expression receives successfully or failure is corresponding can be exchanged.The FCS field comprises the CRC of a 32bit, in order to the integrality of verification grouping.
In the communication process of AP and STA, AP safeguards an information list, after successfully receiving a Frame, records the ID of sending node of this Frame and the numbering of this Frame in list.
Before sending Cluster ACK frame, AP with the information in list by writing frame, the reception condition of the individual Frame of m (m＜=8) that k STA sent writes m the bit of k byte, and " 0 " represents that AP accepts unsuccessfully, and " 1 " represents that AP receives successfully.As: AP successfully receives the 8th Frame of the STA transmission of index=1, and the 8th bit the 1st " replying " field writes " 1 ".
STAs is after receiving Cluster ACK frame, and the information of understanding in frame determines whether the own Frame that sends is correctly received.As: after the STA of index=1 receives Cluster ACK frame, read the 1st Byte, wherein the 8th bit is " 1 ", represents that the 8th Frame that it sends successfully received by AP.
Consult Fig. 4, another implementation.Cluster ACK frame comprises the Frame Control field that 2Byte is long, the Duration/ID field that 2Byte is long, the FCS field that frame and 4Byte are long.Frame is by the long Cluster-ID field of 1Byte, and n long index index field and long " confirmation " field of " n " individual Byte of Byte alternately forms, and n is the quantity of an identifiable node of Cluster ACK frame.Wherein Cluster-ID represents the numbering of the affiliated group of sending node of the Frame that needs are confirmed.Confirmation ACK is documented in cluster acknowledgement frame main body body part, comprises n information group, and each information group comprises that described terminal is at the call number of described group and the described confirmation ACK of described index counterpart terminal.Numbering in the group of the sending node of the Frame that the indication of index index field need to be confirmed.Each Byte in " confirmation " field represents that the indicated STA in front " index " sends the reception condition (being confirmation ACK) of data, each bit in Byte represents the reception condition of the Frame that this STA sends, " 0 " expression AP receives this Frame failure, and " 1 " expression AP receives this Frame success.As: in a Byte, the 1st bit is " 0 ", represents that first Frame of this STA transmission is accepted unsuccessfully by AP, and in a Byte, the 8th bit is " 1 ", represents that the 8th Frame of this STA transmission accepted successfully by AP.
AP safeguards a list in the communication process of AP and STA, after successfully receiving a Frame, records the ID of sending node of this Frame and the numbering of this Frame in list.
Before sending Cluster ACK frame, AP with the information in list by writing frame, needs are confirmed number in the group of sending node of Frame and write in " index " field, the sequence number reception condition that is the Frame of m (m＜=8) is write m bit in " confirmation " field of back, " 0 " expression AP accepts unsuccessfully, and " 1 " expression AP receives successfully.Successfully receive as: AP the 8th Frame that the STA of index=1 sends, write " 1 " in one " index ", write 1 in the 8th bit of " confirmation " field of back.
STAs understands the information in frame after receiving Cluster ACK frame, STA need look for the index field identical with own index value, and in " confirmations " field of its back reading information, whether definite Frame that oneself sends is correctly received.As: after the STA of index=1 receives Cluster ACK frame, find " index " field of index=1, the 8th bit is " 1 " in " confirmation " field of back, represent that the 8th Frame that it sends successfully received by AP, the value of concrete these 8 bit is according to the reception condition decision of Frame.
Consult Fig. 5, another implementation.Cluster ACK frame comprises the Frame Control field that 2Byte is long, the Duration/ID field that 2Byte is long, the FCS field that frame and 4Byte are long.Confirmation ACK is documented in described cluster acknowledgement frame main body body part, comprises n information group, and each information group comprises the confirmation information A CK of a described associated identifiers AID and the indicated terminal of described AID.(be that frame alternately is comprised of " n " individual 2Byte long AID field and long " confirmation " field of " n " individual 1Byte, " n " is the quantity of an identifiable node of Cluster ACK frame.) wherein AID field indication need the AID (associated identifiers) of the sending node of the Frame confirmed, be terminal corresponding to this confirmation ACK.Each bit in " confirmation " field of AID field back represents the confirmation information A CK of the Frame that this STA sends, and " 0 " expression AP receives this Frame failure, and " 1 " expression AP receives this Frame success.As: in " confirmation " field, the 1st bit is " 0 ", represents that first Frame of this STA transmission is accepted unsuccessfully by AP, and in " confirmation " field, the 8th bit is " 1 ", represents that the 8th Frame of this STA transmission accepted successfully by AP.
Further, can also be that first order writes all AID, then order writes all confirmation ACK.Confirmation ACK is documented in cluster acknowledgement frame main body body and partly comprises two information groups, n described confirmation ACK of the individual described AID of the n of journal and journal, wherein k the confirmation information A CK that confirmation ACK is k terminal in described group.
In the communication process of AP and STA, AP safeguards an information list, after successfully receiving a Frame, records the ID of sending node of this Frame and the numbering of this Frame in list.
Before sending Cluster ACK frame, AP with the information in list by writing frame, the AID of the sending node of the Frame that needs are confirmed writes an AID field, the sequence number reception condition (being confirmation ACK) that is the Frame of m (m＜=8) is write m bit in " confirmation " field of back, as: AP successfully receives the 8th Frame of the STA transmission of AID=000000 111111, write " 000,000 111111 " in an AID field, write 1 in the 8th bit in " confirmation " field of this AID field back.STAs understands the information in frame after receiving Cluster ACK frame, STA need look for the AID field identical with own AID value, and in " confirmations " field of its back reading information, whether definite Frame that oneself sends is correctly received.As: after the STA of AID=00000000 11111111 receives Cluster ACK frame, find the AID field of AID=00000000 11111111, the 8th bit is " 1 " in " confirmation " field of back, represents that the 8th Frame that it sends successfully received by AP.
The various embodiments described above can once send ACK to many STA, can also send the ACK of corresponding a plurality of frames to each STA.Because each confirmation ACK (confirmation field) is 1byte, 8 bits are wherein arranged, the reception condition of 8 Frames that corresponding confirmation ACK is corresponding successively.
Above-mentioned all embodiment are all described as an example of maximum 8 terminals example, and each terminal terminal in Cluster ACK frame duration sends at most 8 Frames.If the Frame that STA during this period of time sends surpasses 8, we reply remaining Frame with Cluster-added ACK frame.The structure of Cluster-added ACK frame as shown in Figure 6.
Cluster-added ACK frame comprises the Frame Control field that 2Byte is long, the Duration/ID field that 2Byte is long, the address RA field of the terminal that 6Byte is long, the FCS field that frame and 4Byte are long, cluster are confirmed address that additional frame Cluster-added ACK comprises that also described acknowledgement frame is corresponding and the confirmation information A CK of the Frame after described the 8th Frame.Frame Control field wherein is the same in Duration/ID field, RA field and FCS field format and the existing ACK frame format of effect or previous embodiment.
Recording the reception condition of the 8th the later Frame that this STA sends in frame.K bit in frame represents the reception condition of k+8 the Frame that this STA sends, and " 0 " expression AP accepts unsuccessfully, and " 1 " expression AP receives successfully.As: the 8th bit correctly received by AP for " 1 " represents the 16th Frame that this STA sends.
If the Frame that STA during this period of time sends surpasses 8, AP writes RA with the address of this STA, and the reception condition of remaining Frame is write frame.
After STA receives Cluster-added ACK, judge at first whether RA is the address of oneself, if it is receive, if not abandoning.After receiving Cluster-added ACK, read the information in frame, determine the reception condition of the Frame of transmission.
Further, in order to adopt the said method of the present embodiment, can revise the structure of the Frame of transmission in the data that terminal is sent.Select a bite at the frame control field of Frame, for example the 14th bit, be made as the field into " More Data ", and this field is in to one at AP in data that the STA of PS pattern sends or management frames may be set to 1.In order to the more Frame that represents that AP has been this STA buffer memory.But in the Frame that STA sends, its value always is set as 0.By indicating STA to wish the confirmation mode that obtains with " MoreData " field, when its value was set as 0, expression STA wished to wait until the confirmation mode of Cluster ACK, and when its value was set as 1, expression STA wished to wait until the confirmation mode of traditional ACK.Perhaps compatible for supporting with traditional ACK, the reserved field in the Frame frame head that needs to use STAs to send to AP is as indication.Value by any one bit in the frame head reserved field is determined the confirmation mode that STA need to obtain.Majority in embodiments of the invention terminal STA transmission Frame comprises frame control domain frame control field is according to indication field more data, and terminal STA uses described indication field more data notice access point AP terminal STA whether to support to use cluster acknowledgement frame Cluster ACK.Can arrange More Data and be set to 1 indication and support to use the cluster acknowledgement frame, 0 indication support also can be set certainly use the cluster acknowledgement frame, AP with STA to this agreement or stipulate consistent getting final product.
In concrete enforcement, approximately fixed system adopts Cluster ACK feedback system, does not need above-mentioned more data or the setting of indication bit.
Further, after completing the encapsulation of Cluster ACK frame, AP broadcasts this frame after the beacon frame.STAs does not need additionally to be waken up just to receive this frame.The system that is supports energy-conservation selection.After perhaps completing the encapsulation of Cluster ACK frame, AP can be at any time with this frame broadcasting.STAs need to additionally be waken up could receive this frame.
Transmitting terminal in embodiments of the present invention and receiving terminal adopt the method in said method embodiment to carry out communication, transmitting terminal and receiving terminal can be completed above-mentioned method and each flow process, so in introducing system, the method when using transmitting terminal and receiving terminal sees also embodiment of the method.Each functional module in equipment or unit or device be such as processor etc., corresponding function and the operation that realizes said method respectively.This AP can carry out said method fully, as the executive agent of said method.The embodiment of the present invention further provides a kind of access point apparatus AP that can be used for the wireless local area network.
Consult Fig. 7, the structural representation of embodiment access point apparatus.Access point 80 comprises:
Receiving element 801 is used for the Frame that receiving terminal STA sends;
Cluster acknowledgement frame Cluster ACK generation unit 803, the confirmation information A the CK whether Frame that is used for sending according to each terminal successfully receives generates cluster acknowledgement frame Cluster ACK, after acknowledgement frame Cluster ACK is used for being received by terminal STA, each terminal is to determine whether the Frame that sends is access in an AP and successfully receives, and wherein the cluster acknowledgement frame comprises confirmation ACK and terminal iidentification corresponding to acknowledgement frame;
Transmitting element 805 is used for to terminal STA signalling of bouquet acknowledgement frame Cluster ACK.
Further, the cluster acknowledgement frame that cluster acknowledgement frame Cluster ACK generation unit 803 generates also comprises: frame control information Frame control, frame control information comprises that subtype indicated value subtype value is the cluster acknowledgement frame in order to identify this frame, and the value of subtype value is from 0000-0110.
In being actually used in, n terminal arranged in system, the cluster acknowledgement frame comprises n confirmation ACK;
The cluster acknowledgement frame that cluster acknowledgement frame Cluster ACK generation unit 803 generates comprises that also cluster identity Cluster ID identifies for the group of the affiliated group of terminal corresponding to the confirmation information A CK of expression transmission Frame;
Confirmation ACK is documented in cluster acknowledgement frame main body body part, and k confirmation ACK is for organizing the confirmation information A CK of interior k terminal; 1≤k≤n wherein, 1≤n≤8.
Comprise also in the cluster acknowledgement frame that the associated identifiers AID of terminal is for the terminal iidentification as terminal;
The cluster acknowledgement frame main body body that confirmation ACK is documented in 803 generations of cluster acknowledgement frame Cluster ACK generation unit partly comprises two information groups, n confirmation ACK of the n of a journal AID and journal, wherein k confirmation ACK is for organizing the confirmation information A CK of interior k terminal, 1≤k≤n, 1≤n≤8.
The cluster acknowledgement frame that cluster acknowledgement frame Cluster ACK generation unit 803 generates comprises that also cluster identity Cluster ID identifies for the group of the affiliated group of terminal corresponding to the confirmation information A CK of expression transmission Frame;
Confirmation ACK is documented in the cluster acknowledgement frame main body body part that cluster acknowledgement frame Cluster ACK generation unit 803 generates, and comprises n information group, and each information group comprises that terminal is at the call number of group and the confirmation information A CK of index counterpart terminal; 1≤n≤8 wherein.Perhaps,
The cluster acknowledgement frame main body body that confirmation ACK is documented in 803 generations of cluster acknowledgement frame Cluster ACK generation unit partly comprises two information groups, n confirmation ACK of the n of a journal AID and journal, wherein k confirmation ACK is for organizing the confirmation information A CK of interior k terminal, 1≤k≤n, 1≤n≤8.
Further, access point apparatus also comprises information recording unit 807, is used for confirmation ACK is recorded in information list.The information in the 803 reading information lists of cluster acknowledgement frame Cluster ACK generation unit is to generate cluster acknowledgement frame Cluster ACK.
If further cluster acknowledgement frame Cluster ACK generation unit 803 also is used for the quantity of the Frame that terminal sends greater than 8 within the duration of cluster acknowledgement frame, generate cluster and confirm additional frame Cluster-added ACK, cluster is confirmed the confirmation information A CK of the Frame after address that additional frame Cluster-added ACK comprises that acknowledgement frame is corresponding and the 8th Frame;
Transmitting element 805 also is used for signalling of bouquet and confirms additional frame Cluster-added ACK.
Access point apparatus of the present invention adopts and replys control frame---Cluster ACK, makes AP can use a Cluster ACK frame to reply simultaneously the data that a plurality of STAs send to it.Thereby reduce the network overhead that ACK brings, improve the performance of system.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to complete by computer program, described program can be stored in a computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Claims (21)
1. send the method for data in a WLAN (wireless local area network), it is characterized in that, described method comprises:
The Frame that access point AP receiving terminal STA sends;
Described access point AP records the confirmation information A CK whether described Frame that each terminal sends successfully receives;
Described access point AP is to described terminal STA signalling of bouquet acknowledgement frame Cluster ACK, and after described acknowledgement frame Cluster ACK is used for being received by described terminal STA, each terminal is to determine whether the described Frame that sends is successfully received by described access point AP; Wherein said cluster acknowledgement frame comprises at least two described confirmation ACK, also comprises the terminal iidentification corresponding with described acknowledgement frame ACK.
2. method according to claim 1, it is characterized in that, described cluster acknowledgement frame also comprises: frame control information Frame control, described frame control information comprises that subtype indicated value subtype value is the cluster acknowledgement frame in order to identify this frame, and the value of described subtype value is from 0000-0110.
3. according to claim 1 and 2 described method, is characterized in that, described terminal is n terminal, and described cluster acknowledgement frame comprises n described confirmation ACK;
Described cluster acknowledgement frame comprises that also cluster identity Cluster ID is used for the affiliated group sign of organizing of terminal corresponding to described confirmation ACK that expression sends described Frame;
Described confirmation ACK is documented in described cluster acknowledgement frame main body body part, and k confirmation ACK is the confirmation information A CK of k terminal in described group;
1≤k≤n wherein.
4. method according to claim 1 and 2, is characterized in that,
Described terminal is n terminal, and described cluster acknowledgement frame comprises n described confirmation ACK,
Described cluster acknowledgement frame comprises that also cluster identity Cluster ID is used for the affiliated group sign of organizing of terminal corresponding to described confirmation ACK that expression sends described Frame;
Described confirmation ACK is documented in described cluster acknowledgement frame main body body part, comprises n information group, and each information group comprises that described terminal is at the call number of described group and the described confirmation ACK of described index counterpart terminal.
5. method according to claim 1 and 2, is characterized in that,
Described terminal is n terminal, and described cluster acknowledgement frame comprises n described confirmation ACK, comprises also in described cluster acknowledgement frame that the associated identifiers AID of described terminal is for the terminal iidentification as described terminal;
Described confirmation ACK is documented in described cluster acknowledgement frame main body body part, comprises n information group, and each information group comprises the confirmation information A CK of a described associated identifiers AID and the indicated terminal of described AID.
6. method according to claim 1 and 2, is characterized in that,
Described terminal is n terminal, and described cluster acknowledgement frame comprises n described confirmation ACK, comprises also in described cluster acknowledgement frame that the associated identifiers AID of described terminal is for the terminal iidentification as described terminal;
Described confirmation ACK is documented in described cluster acknowledgement frame main body body and partly comprises two information groups, n described confirmation ACK of the individual described AID of the n of journal and journal, wherein k the confirmation information A CK that confirmation ACK is k terminal in described group.
7. according to claim 1-6 described methods of any one claim, it is characterized in that, each described confirmation ACK in described cluster acknowledgement frame comprises the reception condition information to a plurality of Frames, and the reception condition information of each described Frame takies 1 bit bit.
8. according to claim 1-6 described methods of any one claim, is characterized in that, described cluster acknowledgement frame also comprises: FCS information, this FCS information comprise that check field is used for the integrality of this cluster acknowledgement frame of verification Cluster ACK.
9. according to claim 1-6 described methods of any one claim, it is characterized in that, described access point AP records the confirmation information A CK whether described Frame that each terminal sends successfully receive and comprises that described access point AP is recorded in described confirmation ACK in information list;
Described access point AP described access point AP before the described terminal STA signalling of bouquet acknowledgement frame Cluster ACK sequentially writes described cluster acknowledgement frame with the information in described information list.
10. according to claim 3-6 described methods of any one claim, it is characterized in that, if the quantity of the Frame that described terminal sent within the duration of described cluster acknowledgement frame is greater than 8, described method also comprises: described access point AP sends to the backward described terminal STA signalling of bouquet of described terminal STA signalling of bouquet acknowledgement frame Cluster ACK and confirms additional frame Cluster-added ACK; Described cluster is confirmed address that additional frame Cluster-added ACK comprises that described acknowledgement frame is corresponding and the confirmation information A CK of the Frame after described the 8th Frame.
11. forwarding method, is characterized in that according to claim 10, described cluster confirms that additional frame Cluster-added ACK comprises:
Frame control information Frame control, described frame control information comprise that subtype indicated value subtype value is the cluster acknowledgement frame in order to identify this frame, and the value of described subtype value is from 0000-0110.
12. according to claim 1-11 described methods of any one claim is characterized in that, described access point AP sends described cluster acknowledgement frame Cluster ACK by the mode of broadcasting.
13. according to claim 1-12 described methods of any one claim, it is characterized in that, described terminal STA sends Frame and comprises majority in frame control domain frame control field according to indication field more data, and described terminal STA uses described indication field more data to notify the described terminal STA of described access point AP whether to support to use cluster acknowledgement frame Cluster ACK.
14. an access point apparatus AP is characterized in that, described access point comprises:
Receiving element is used for the Frame that receiving terminal STA sends;
Cluster acknowledgement frame Cluster ACK generation unit, the confirmation information A the CK whether described Frame that is used for sending according to each terminal successfully receives generates cluster acknowledgement frame Cluster ACK, after described acknowledgement frame Cluster ACK is used for being received by described terminal STA, each terminal is to determine whether the described Frame that sends is successfully received by described access point AP, and wherein said cluster acknowledgement frame comprises described confirmation ACK and terminal iidentification corresponding to described acknowledgement frame;
Transmitting element is used for sending described cluster acknowledgement frame Cluster ACK to described terminal STA.
15. access point apparatus according to claim 14, it is characterized in that, the described cluster acknowledgement frame that described cluster acknowledgement frame Cluster ACK generation unit generates also comprises: frame control information Frame control, described frame control information comprises that subtype indicated value subtype value is the cluster acknowledgement frame in order to identify this frame, and the value of described subtype value is from 0000-0110.
16. according to claim 14 or 15 described access point apparatus is characterized in that, described terminal is n terminal, and described cluster acknowledgement frame comprises n described confirmation ACK;
The cluster acknowledgement frame that described cluster acknowledgement frame Cluster ACK generation unit generates comprises that also cluster identity Cluster ID identifies for the group of the affiliated group of terminal corresponding to the described confirmation ACK of the described Frame of expression transmission;
Described confirmation ACK is documented in described cluster acknowledgement frame main body body part, and k confirmation ACK is the confirmation information A CK of k terminal in described group; 1≤k≤n wherein.
17. according to claim 14 or 15 described access point apparatus, it is characterized in that, described terminal is n terminal, described cluster acknowledgement frame comprises n described confirmation ACK, comprises also in described cluster acknowledgement frame that the associated identifiers AID of described terminal is for the terminal iidentification as described terminal;
The described cluster acknowledgement frame main body body that described confirmation ACK is documented in described cluster acknowledgement frame Cluster ACK generation unit generation partly comprises two information groups, n described confirmation ACK of the individual described AID of the n of journal and journal, wherein k confirmation ACK is the confirmation information A CK of k terminal in described group, 1≤k≤n.
18. according to claim 14 or 15 described access points is characterized in that, described terminal is n terminal, and described cluster acknowledgement frame comprises n described confirmation ACK,
The described cluster acknowledgement frame that described cluster acknowledgement frame Cluster ACK generation unit generates comprises that also cluster identity Cluster ID identifies for the group of the affiliated group of terminal corresponding to the described confirmation ACK of the described Frame of expression transmission;
Described confirmation ACK is documented in described cluster acknowledgement frame main body body part, comprises n information group, and each information group comprises that described terminal is at the call number of described group and the described confirmation ACK of described index counterpart terminal.
19. according to claim 14 or 15 described access points, it is characterized in that, described terminal is n terminal, and described cluster acknowledgement frame comprises n described confirmation ACK, comprises also in described cluster acknowledgement frame that the associated identifiers AID of described terminal is for the terminal iidentification as described terminal;
The described cluster acknowledgement frame main body body that described confirmation ACK is documented in described cluster acknowledgement frame Cluster ACK generation unit generation partly comprises two information groups, n described confirmation ACK of the individual described AID of the n of journal and journal, wherein k confirmation ACK is the confirmation information A CK of k terminal in described group, 1≤k≤n.
20. according to claim 14-19 described access points of any one claim is characterized in that, described access point also comprises:
Information recording unit is used for described confirmation ACK is recorded in information list.Described cluster acknowledgement frame Cluster ACK generation unit reads information in described information list to generate described cluster acknowledgement frame Cluster ACK.
21. according to claim 14-20 described access points of any one claim, it is characterized in that, if described cluster acknowledgement frame Cluster ACK generation unit also is used for the quantity of the Frame that described terminal sends greater than 8 within the duration of described cluster acknowledgement frame, generate cluster and confirm additional frame Cluster-added ACK, described cluster is confirmed address that additional frame Cluster-added ACK comprises that described acknowledgement frame is corresponding and the confirmation information A CK of the Frame after described the 8th Frame;
Described transmitting element also is used for sending described cluster and confirms additional frame Cluster-added ACK.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104396023A CN103178943A (en) | 2011-12-23 | 2011-12-23 | Method, device and system for link adaption |
| PCT/CN2012/086628 WO2013091509A1 (en) | 2011-12-23 | 2012-12-14 | Link adaptation method, device, and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104396023A CN103178943A (en) | 2011-12-23 | 2011-12-23 | Method, device and system for link adaption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103178943A true CN103178943A (en) | 2013-06-26 |
Family
ID=48638581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104396023A Pending CN103178943A (en) | 2011-12-23 | 2011-12-23 | Method, device and system for link adaption |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103178943A (en) |
| WO (1) | WO2013091509A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120551A (en) * | 2015-07-13 | 2015-12-02 | 苏州大学 | BME technology-based wireless LED control system and method |
| CN106792903A (en) * | 2016-12-13 | 2017-05-31 | 深圳中科讯联科技股份有限公司 | A kind of multi-to-multi wireless data sending method and device, method of reseptance and device |
| CN108347321A (en) * | 2017-01-25 | 2018-07-31 | 华为技术有限公司 | A kind of communication means and device |
| CN110546904A (en) * | 2017-04-26 | 2019-12-06 | 高通股份有限公司 | Group acknowledgement and/or group negative acknowledgement in a wireless communication system |
| CN113676307A (en) * | 2015-07-07 | 2021-11-19 | 索尼公司 | Communication apparatus and communication method |
| CN114073025A (en) * | 2020-06-05 | 2022-02-18 | 北京小米移动软件有限公司 | Duration domain value determination method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849772A (en) * | 2003-08-08 | 2006-10-18 | 英特尔公司 | Sdma communications with non-immediate block acknowledgment |
| US20090046618A1 (en) * | 2007-08-13 | 2009-02-19 | Kabushiki Kaisha Toshiba | Wireless communication system and wireless communication device |
| US20110235593A1 (en) * | 2010-03-29 | 2011-09-29 | Gong Michelle X | Techniques for efficient acknowledgement for UL MU mimo and uplink OFDMA in wireless networks |
-
2011
- 2011-12-23 CN CN2011104396023A patent/CN103178943A/en active Pending
-
2012
- 2012-12-14 WO PCT/CN2012/086628 patent/WO2013091509A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849772A (en) * | 2003-08-08 | 2006-10-18 | 英特尔公司 | Sdma communications with non-immediate block acknowledgment |
| US20090046618A1 (en) * | 2007-08-13 | 2009-02-19 | Kabushiki Kaisha Toshiba | Wireless communication system and wireless communication device |
| US20110235593A1 (en) * | 2010-03-29 | 2011-09-29 | Gong Michelle X | Techniques for efficient acknowledgement for UL MU mimo and uplink OFDMA in wireless networks |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676307A (en) * | 2015-07-07 | 2021-11-19 | 索尼公司 | Communication apparatus and communication method |
| CN105120551A (en) * | 2015-07-13 | 2015-12-02 | 苏州大学 | BME technology-based wireless LED control system and method |
| CN106792903A (en) * | 2016-12-13 | 2017-05-31 | 深圳中科讯联科技股份有限公司 | A kind of multi-to-multi wireless data sending method and device, method of reseptance and device |
| CN108347321A (en) * | 2017-01-25 | 2018-07-31 | 华为技术有限公司 | A kind of communication means and device |
| CN110546904A (en) * | 2017-04-26 | 2019-12-06 | 高通股份有限公司 | Group acknowledgement and/or group negative acknowledgement in a wireless communication system |
| CN110546904B (en) * | 2017-04-26 | 2022-05-17 | 高通股份有限公司 | Method and apparatus for group acknowledgement and/or group negative acknowledgement in a wireless communication system |
| CN114073025A (en) * | 2020-06-05 | 2022-02-18 | 北京小米移动软件有限公司 | Duration domain value determination method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013091509A1 (en) | 2013-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101977100B (en) | The block simplifying recipient state information confirms | |
| USRE49471E1 (en) | Method for protecting data in a mu-mimo based wireless communication system | |
| CN102843785B (en) | Method and device for transmission of reverse protocol in wireless local network (WLCN) | |
| WO2018202177A1 (en) | Method and device for upgrading firmware of zigbee devices | |
| CN102026297B (en) | Method, system and node for channel negotiation | |
| CN103178943A (en) | Method, device and system for link adaption | |
| KR20110058709A (en) | Failed frame recovery method in multi-user based wireless communication system | |
| CN102665213A (en) | Data direct connection processing method, equipment and system thereof | |
| CN104584473A (en) | Channel resource indication method and device | |
| CN103974447A (en) | Data transmission method, device and system | |
| CN104508996A (en) | Connection establishment method, device and system | |
| CN104065452A (en) | Wireless communication method, related equipment and system | |
| CN102511142B (en) | Improve the method and system of the link budget of wireless system | |
| CN103999509A (en) | System and method for communicating using short-header frames | |
| CN103957087A (en) | Wireless communication method, related devices and system | |
| CN102724651A (en) | Method, equipment and system for data straight-through processing | |
| CN102404710B (en) | Method, device and system for contract signing data management of machine type communication device | |
| CN106559903A (en) | End-to-end communication link establishing method, access point and website | |
| CN108234093B (en) | Control information indication method and network element | |
| CN102984813B (en) | Data straight through processing method, equipment and system | |
| KR100631742B1 (en) | AC frame transmission method and device | |
| CN103227982A (en) | Straight through data processing method, equipment and system | |
| CN102742304B (en) | MOCN cut-in method, Apparatus and system | |
| KR100631736B1 (en) | AC frame transmission method and device | |
| CN102742317B (en) | Communication system, communication method and communication apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130626 |