CN105429737B - A kind of method and apparatus for frame acknowledgment - Google Patents
A kind of method and apparatus for frame acknowledgment Download PDFInfo
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- CN105429737B CN105429737B CN201510864249.1A CN201510864249A CN105429737B CN 105429737 B CN105429737 B CN 105429737B CN 201510864249 A CN201510864249 A CN 201510864249A CN 105429737 B CN105429737 B CN 105429737B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1621—Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
-
- 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
- H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
Abstract
The present invention provides a kind of method and apparatus for frame acknowledgment, this method comprises: the confirmation response of one or more frame is encapsulated as group acknowledge response;Send the group acknowledge response.This method can reduce the transfer resource of frame acknowledgment occupancy, effectively ensure data Successful transmissions.
Description
It is on March 23rd, 2012 that the application, which is the applying date, application No. is 201280013095.X, entitled one kind
The division of the parent application of method and apparatus for frame acknowledgment.
Technical field
The invention belongs to wireless communication field more particularly to a kind of method and apparatus for frame acknowledgment.
Background technique
In recent years, radio network technique has WLAN WiFi technology based on 802.11 standards, based on 802.15
Bluetooth Bluetooth system and the Femto technology towards indoor application etc. being derived by mobile communication system.
WiFi technology based on IEEE 802.11 is to use a kind of most wide wireless network transmission technology now.Mainly answer
For radio local network environment, application scenarios are in the majority with interior, can also be applied to outdoor environment.802.11 system is by initial
802.11b based on CDMA transmission mechanism is evolved to 802.11a and 802.11g based on OFDM technology.Although newest
In IEEE 802.11n-2009 standard, make 802.11n physical layer peak rate can by introducing multiple antennas (MIMO) technology
Up to 600Mbps, but the only maximum of handling up of usually media access control (MAC, Media Access Control) layer can reach
To 300Mbps.So the single user based on CSMA/CA (carrier sense/conflict avoidance) accesses for traditional wlan system
MAC layer design be always network performance bottleneck.So although existing Wi-Fi technology mentions to a certain extent for user
Cheap user mode access has been supplied, but has been difficult to adapt to the multimedia of the high-speed of current and following rapid development again
Business demand.
Femto technology based on 3GPP standard be from mobile communication system evolution come it is a kind of towards in-door covering
New technology, the Femto technology based on 3G system use CDMA transmission mechanism, and the Femto technology towards LTE or WiMAX system is then
Using OFDM transmission mechanism.Its multiple access access mechanism is distributed by time, frequency, code word for different users mutually orthogonal
Access-in resource, this has essence different from the CSMA/CA random multi-access channel towards competition.But Femto technology by towards
The 3G/LTE/WiMAX system of mobile communication system is derived.Since 3G/LTE/WiMAX system is mainly directed towards wide area covering
Mobile communication scene, system features for short-distance and medium-distance wireless communication scene do not optimize.It is based on 3G/LTE/ simultaneously
WiMAX more complicated upper-layer protocol design, to the synchronous strict demand waited, causes equipment cost that can not accomplish with PHY layer
As 802.11 it is cheap, this is also the one of the major reasons that Femto technology is not widely used always at present.
Multimedia service application demand in face of increasingly developing rapidly needs to preferably meet wireless communication needs
It is proposed more applicable implementation.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of method and apparatus for frame acknowledgment, to effectively ensure
Data Successful transmissions.
The embodiment of the present invention provides a kind of method for frame acknowledgment, comprising:
The confirmation response of one or more frame is encapsulated as group acknowledge response, is specifically included:
The confirmation response of one or more frame on same Business Stream is encapsulated as Business Stream confirmation response;By one
Or multiple Business Stream confirmation responses are encapsulated as group acknowledge response;
Encapsulate frame head, frame and the frame check information FCS of group acknowledge response;
One or more FID (Flow ID) Business Stream block of information, the FID Business Stream block of information are set in frame
In include traffic stream identifier, serial number and bitmap bitmap, wherein the confirmation that the bitmap is used to carry continuous multiple frames is answered
It answers, each in bitmap corresponds to the confirmation response of a frame, and the serial number is used to indicate first bit in the bitmap
The serial number of the corresponding frame in position;
Send the group acknowledge response;
After receiving confirmation request immediately or confirmation instruction immediately, the group acknowledge response is returned immediately, it is specific to wrap
It includes:
Each physical frame period successively includes downstream cycle and upward cycle, is received in the downlink physical period of this frame
Immediately confirmation request or immediately confirmation instruction when, this frame the ascending physical signal period return group acknowledge response;In the upper of this frame
When the row physics period receives confirmation request immediately or confirmation instruction immediately, in the downlink physical period return group of next frame
Confirm response;
Central access point and website transmitting terminal and receiving end each other are sent and received one of in the following manner:
(1) if, central access point send and need the management control frame that confirms to website, central access point is being dispatched
Resource is reserved when uplink transmission resource for corresponding acknowledgement frame;
(2) if, central access point transmission group Medium Access Control (MAC) Protocol Data Unit (G-MPDU) give website, and by being used to indicate
The field instruction website of frame acknowledgment mode is confirmed that then central access point is corresponding in scheduling of upstream transmissions resource immediately
Acknowledgement frame reserve resource;
(3) if, central access point send aggregate data frame to website, and the word by being used to indicate frame acknowledgment mode
Section instruction allows website to postpone response, then website actively can return group acknowledge frame when uplink transmission resource has residue,
Or group acknowledge frame is returned again after waiting the acknowledgement notification immediately for receiving central access point transmission;
(4) if, website send and need the management control frame that confirms to central access point, central access point should be
The downlink physical period of next frame is confirmed;
(5) if, website transmission group Medium Access Control (MAC) Protocol Data Unit (G-MPDU) give central access point, and by being used to indicate
The field Deictic Center access point of frame acknowledgment mode confirms that then central access point is sent out in the downlink physical period of next frame immediately
Send acknowledgement frame;
(6) if, website send aggregate data frame to central access point, and the word by being used to indicate frame acknowledgment mode
Section instruction allows central access point to postpone response, then central access point is when downlink transfer resource has residue actively by group acknowledge
Frame passback, or group acknowledge frame is returned again after waiting the acknowledgement notification immediately for receiving website transmission.
Return to the confirmation response of the designated frame in specified data flow immediately according to the confirmation request immediately.
Wherein, the frame head of the frame is parsed, confirmation instruction immediately is therefrom obtained.
The embodiment of the invention also includes a kind of devices for frame acknowledgment, comprising:
Package module, for the confirmation response of one or more frame to be encapsulated as group acknowledge response;
Sending module, for sending the group acknowledge response;
Wherein, the package module, for the confirmation response of one or more frame on same Business Stream to be encapsulated as
Business Stream confirms response;One or more described Business Stream confirmation response is encapsulated as group acknowledge response;
Wherein, the package module, for encapsulating the frame head, frame and FCS of group acknowledge response: one being arranged in frame
A or multiple FID Business Stream block of informations, the Business Stream confirm to include traffic stream identifier, serial number and bitmap in response
Bitmap, wherein the bitmap is used to carry the confirmation response of continuous multiple frames, each in bitmap corresponds to one
The confirmation response of frame, the serial number are used to indicate the serial number of the corresponding frame of first bit in the bitmap;
Control module for receiving confirmation request immediately or immediately confirmation instruction, and controls the package module accordingly
Group acknowledge response is encapsulated, and the control sending module sends packaged group acknowledge response immediately;
Each physical frame period successively includes downstream cycle and upward cycle, is received from the downlink physical period of this frame
When to the confirmation request immediately, the control module controls the sending module and sends envelope in the ascending physical signal period of this frame
The group acknowledge response installed;When from the confirmation request immediately is received in the ascending physical signal period of this frame, the transmission is controlled
Module sends packaged group acknowledge response in the downlink physical period of next frame;
Preferably, the confirmation request immediately carries in the mark and each Business Stream of one or more Business Stream
The mark of one or more frame;
The control module controls the package module for the finger in specified data flow according to the confirmation request immediately
The confirmation response of framing is encapsulated as group acknowledge response.
Preferably, the control module obtains the confirmation instruction immediately by parsing the frame head of data frame.
A kind of method and apparatus for frame acknowledgment provided by the invention, can be to ensure that data Successful transmissions provide one
Kind response mode, and being capable of effectively save transfer resource.
Detailed description of the invention
Fig. 1 is a kind of method flow diagram of frame acknowledgment of first embodiment of the invention;
Fig. 2 is a kind of group acknowledge frame format schematic diagram of first embodiment of the invention;
Fig. 3 is a kind of ACK frame format schematic diagram of second embodiment of the invention;
Fig. 4 is a kind of method flow diagram of re-transmission of third embodiment of the invention;
Fig. 5 is a kind of G-MPDU form schematic diagram of third embodiment of the invention;
Fig. 6 is a kind of G-MPDU sub-frame formats schematic diagram of third embodiment of the invention;
Fig. 7 is a kind of method flow diagram for re-transmission of fourth embodiment of the invention;
Fig. 8 is a kind of group acknowledge claim frame form schematic diagram of fourth embodiment of the invention;
Fig. 9 is a kind of device block diagram for frame acknowledgment of fifth embodiment of the invention;
Figure 10 is a kind of device block diagram for frame acknowledgment of sixth embodiment of the invention.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, so that those skilled in the art's energy
Enough practice them.Other embodiments may include structure, logic, it is electrical, process and other change.It is real
It applies example and only represents possible variation.Unless explicitly requested, otherwise individual component and function are optional, and are operated suitable
Sequence can change.The part of some embodiments and feature can be included in or replace part and the spy of other embodiments
Sign.The range of embodiment of the present invention includes that the entire scope of claims and all of claims can get
Equivalent.Herein, these embodiments of the invention individually or can be indicated generally with term " invention ",
This is not meant to automatically limit the application just for the sake of convenient, and if in fact disclosing the invention more than one
Range is any single invention or inventive concept.
First embodiment
The embodiment of the invention provides a kind of methods of frame acknowledgment, are not only suitable for management frame and are also applied for data frame.It sends
After end sends frame, receiving end returns to confirmation response, to inform whether data described in transmitting terminal are successfully received, so as to right
Data send success or not and carry out effective monitoring.
Referring to Fig. 1, the figure shows a kind of frame acknowledgment methods of the embodiment of the present invention, comprising steps of
Step S101: the confirmation response of one or more frame is encapsulated as group acknowledge response (GroupAck);
Wherein, the confirmation response of the frame is indicating the reception state of frame, including receives and do not receive.
Step S102: the group acknowledge response is sent.
The embodiment of the invention provides a kind of response modes of group acknowledge, and the confirmation response of multiple frames is encapsulated to same
It is sent in frame, using this response mode, same frame head parameter only needs to pass once, is effectively saved transmission
Resource;When in addition transmitting on the physical channel, answering for multiple frames can be got by executing synchronizing for frame (group acknowledge response)
It answers, to effectively save physical transfer resource.
Wireless communication system supports multiple business, the transmission of data to transmit according to Business Stream.According to type, Business Stream can
To be divided into management business stream and data Business Stream.Wherein, management business stream is made of one or more management frame, data industry
Business stream is made of one or more data frame.It can also be more by data service flow point according to specific type of service
Stream, such as Business Stream 1 (being indicated with FID1), Business Stream 2 (are indicated) with FID2 ..., and Business Stream n (is indicated) with FIDn.
Therefore, step S101 can further comprise (not shown):
Step S1011: the confirmation response of one or more frame on same Business Stream is encapsulated as Business Stream confirmation and is answered
It answers;
Step S1012: the confirmation response of one or more Business Stream is encapsulated as group acknowledge response.
When encapsulating group acknowledge response, the mark and each business of one or more of Business Streams are also encapsulated
The mark of one or more of frames on stream, so that receiving end identifies which industry the group acknowledge response received is to accordingly
The confirmation which frame on business stream is made.
Preferably, the embodiment of the present invention proposes on each bit in a bitmap (bitmap) successively traffic streams
The confirmation response of each frame.The confirmation response of corresponding frame is identified with the serial number of the corresponding frame of bit in the bitmap.
Learn that carry in the bit is answering for which frame according to the serial number of the corresponding frame of bit in the bitmap in receiving end
It answers, according to the confirmation response content of the worth frame for knowing the bit serial number mark of the bit.
It, can specific position in the continuous frame preferably, when to continuous multiple frame responses on Business Stream
Frame, such as come on identification service stream with the length of the serial number of the corresponding frame of bit first in bitmap and bitmap continuous more
The confirmation response of a frame, each in bitmap correspond to the confirmation response of a frame.
Preferably, the length of the bitmap is not fixed, the response quantity of the frame of return is very flexible, further increases
Resource utilization.
Preferably, fragment instruction information can also be arranged, to indicate that is carried in corresponding bitmap is the frame of fragment
Confirm response, still the confirmation response of the frame of non-fragment.That is, the embodiment of the present invention supports the confirmation response to the frame of non-fragment,
Also the confirmation response to the frame of fragment is supported, while can be with the frame of the confirmation response of the frame of hybrid feedback fragment and non-fragment
Confirm response.For example, carrying the confirmation response of FID0 and FID1 in group acknowledge response, the frame on FID0 is the frame of non-fragment,
Frame on FID1 is the frame of fragment, then with the confirmation response of the frame of the non-fragment on bitmap0 instruction FID0, with bitmap1
Indicate the confirmation response of the frame of the fragment on FID1.For another example the confirmation for carrying FID0 and FID1 in group acknowledge response is answered
It answers, the frame on FID0 includes the frame of non-fragment and the frame of fragment, and the frame on FID1 is the frame of non-fragment, then is indicated with bitmap0
The confirmation response of the frame of non-fragment on FID0 indicates the confirmation response of the frame of the fragment on FID0 with bitmap1, with
Bitmap2 indicates the confirmation response of the frame of the non-fragment on FID1.
In order to more intuitively illustrate, the embodiment of the invention also provides a kind of format of specific group acknowledge frame, such as Fig. 2
It is shown.Group acknowledge frame shown in Fig. 2 includes frame head, frame and frame check information (FCS).It include frame control information, example in frame head
Such as frame type (management frame perhaps data frame), subtype (specific management frame or specific data frame type), version
This information etc.;Include one or more FID block of information in frame, includes traffic stream identifier, serial number in the FID block of information
And bitmap, wherein the bitmap is used to carry the confirmation response of continuous multiple frames, each correspondence in bitmap
The confirmation response of one frame, the serial number are used to indicate the serial number of the corresponding frame of first bit in the bitmap.
Preferably, each FID block of information is arranged according to the length of bitmap;The length of the bitmap is not fixed.
Preferably, also setting up the length field of bitmap in the FID block of information, it is used to indicate the length of bitmap.
Preferably, also setting up fragment instruction information, in the FID block of information with indicate to carry in the bitmap
The confirmation response of the frame of fragment, or non-fragment frame confirmation response.
Preferably, management control frame acknowledgement bit is also set up in frame, for receiving one without sequence number management control
Frame processed is confirmed.
Preferably, length field can be arranged in frame, it is used to indicate institute between the length field and FCS field
There is the total byte length of field, that is, indicate the sum of the length of all FID block of informations.
Each parameter definition in frame can refer to table 1.
Table 1
The confirmation response of the frame is indicating the reception state of frame, including receives and do not receive.
The trigger timing for returning to frame acknowledgment response to the embodiment of the present invention is illustrated below:
1, confirm immediately:
Mode 1: after receiving confirmation request immediately, acknowledgement frame is returned immediately.
Wherein, the confirmation request immediately can be the request frame format that both sides appoint.Preferably, described vertical
I.e. confirmation request can be group acknowledge request, carry one in the mark and each Business Stream of one or more Business Stream
Or the mark of multiple frames, to indicate to return to the confirmation response of the designated frame on specified services stream immediately.Receiving described group
After confirmation request, the confirmation response of the designated frame in specified data flow is returned immediately.
The confirmation request immediately is also possible to the indicating bit that both sides appoint.For example, certain in agreement data frame
One field is to confirm indicating bit immediately.When parsing data frame, if parsing confirmation instruction immediately from data frame, stand
Return to acknowledgement frame.
Preferably, the setting instruction of confirmation immediately is carried in the frame head of data frame.
Acknowledgement frame is returned described in the embodiment of the present invention immediately, is returned in next time cycle.
In the embodiment of the present invention, central access point (CAP) and website (STA) can transmitting terminal and receiving ends each other.Its
In, CAP is to provide the entity of access service for the STA of access;STA is with media access control (MAC) and physical layer
(PHY) functional interface, the terminal device that can be communicated with CAP.Transmitting-receiving both-end is communicated by physical frame, each physical frame week
Phase successively includes downstream cycle and upward cycle: CAP sends data to STA in downstream cycle;STA is sent out in upward cycle to CAP
Send data.In the embodiment of the present invention, when instruction opposite end returns to acknowledgement frame immediately, indicated return duration immediately is that is, next
Time cycle refers to that the ascending physical signal frame period corresponds to the downstream physical frame period or the downstream physical frame period corresponds to upper one
The upward cycle of physical frame.Specifically, being to send the carrying in the downlink physical period of this frame when transmitting terminal is CAP
When confirming the data frame of instruction immediately, the instruction of confirmation immediately is used to indicate STA and returns to frame in the ascending physical signal period of this frame
Confirm response;It is to send to carry the data for confirming instruction immediately in the ascending physical signal period of this frame when transmitting terminal is STA
Frame, the instruction of confirmation immediately are used to indicate CAP and return to frame acknowledgment response in the downlink physical period of next frame.
2, delayed acknowledgement:
When not receiving confirmation request immediately, it is believed that opposite end is allowed to postpone to return to the confirmation response of frame.
In the embodiment of the present invention, the indicating bit that both sides appoint, dominant indication lag confirmation.For example, agreement data
A certain field in frame is delayed acknowledgement indicating bit.Interval is waited to be determined by transmitting terminal using the frame acknowledgment of delayed acknowledgement, it can be with
It is sent in available free resource.When parsing data frame, if delayed acknowledgement instruction is parsed from data frame, free
Acknowledgement frame is returned when not busy resource.
Second embodiment
For managing control frame, the unicast management control frame for not corresponding to response frame is needed using ACK or group acknowledge frame
(GroupAck) confirm, otherwise directly with corresponding response frame acknowledgment.
The embodiment of the invention also provides some management frame claim frames and its corresponding response frames, as shown in table 2.Certainly,
In another embodiment, other management claim frames can also be set as needed and its corresponding response, the present invention are not done herein
Limitation.
Table 2
The management control frame (except random access request response frame and independent resource claim frame) of all non-broadcasting requires to send out
Send acknowledgement frame or implicit confirmation.Implicit confirmation refers to for there is the unicast management control frame of corresponding response frame that can will respond
Acknowledgement frame of the frame as this frame.The management control frame of non-broadcasting do not need to confirm immediately, and response frame can allow later
It is responded in greatest physical frame number.The response frame that CAP is sent can not receive the acknowledgement frame of STA, can be not up to preset
The response frame is retransmitted before maximum retransmission, more than after the preset maximum retransmission, transmitting terminal will abandon number of retransmissions
The frame.
Data frame is determined using confirmation and delayed acknowledgement immediately by transmitting terminal.Receiving end can be according to being arranged in MAC
The field of frame acknowledgment mode is indicated to indicate whether to need to confirm immediately.Waiting interval using the frame acknowledgment confirmed immediately is one
A time cycle.Interval is waited to be determined by transmitting terminal using the frame acknowledgment of delayed acknowledgement.
If it is confirmed that mode is when confirming immediately, not receive acknowledgement frame in next time cycle, then can not reach
The data frame is retransmitted before to preset maximum retransmission, number of retransmissions is more than transmission after the preset maximum retransmission
End will abandon the frame.Next time cycle said herein can correspond to the downstream physical frame period with the ascending physical signal frame period,
It can be upward cycle of the downstream physical frame period corresponding to a upper physical frame.That is, the downlink physical period in this frame sends institute
Carrying is stated when confirming the data frame of instruction immediately, the instruction of confirmation immediately is used to indicate to be returned in the ascending physical signal period of this frame
Return frame acknowledgment response;It is described to confirm immediately when the ascending physical signal period transmission of this frame carries and confirms the data frame of instruction immediately
It indicates to be used to indicate and returns to frame acknowledgment response in the downlink physical period of next frame.When MPDU is retransmitted, serial number and fragment number are protected
It holds constant.
If it is confirmed that not receiving acknowledgement frame when mode is delayed acknowledgement in the waiting interval of transmitting terminal setting, then may be used
To retransmit the data frame before not up to preset maximum retransmission, number of retransmissions is more than the preset maximum re-transmission time
After number, transmitting terminal will abandon the frame.
ACK frame and GroupAck frame, it is no longer necessary to which other frames are confirmed.
For the data frame of fragment and non-fragment, ACK or GroupAck any one mode can be used and confirm.
The embodiment of the invention also provides another frame acknowledgment mode (ACK frames), suitable for being confirmed for single frames.
In order to more intuitively illustrate, the embodiment of the invention also provides a kind of formats of specific acknowledgement frame, as shown in Figure 3.Fig. 3 institute
The acknowledgement frame shown includes frame head, frame and frame check information (FCS).It include frame control information, such as frame type (pipe in frame head
Manage frame perhaps data frame), subtype (specific management frame or specific data frame type), version information etc.;Frame
It include FID, fragment number (FSN), number of frames (SN) in body.Each parameter definition in frame can refer to table 3.
Table 3
3rd embodiment
The embodiment of the invention provides a kind of methods of re-transmission, as shown in figure 4, comprising steps of
Step S401: the frame that caching has been sent;
Step S402: frame acknowledgment response is received and parsed through;
Step S403: it retransmits and received frame is confirmed in the frame of caching.
The data that repeating method provided in an embodiment of the present invention is retransmitted by transmitting terminal maintenance only retransmit not really when retransmitting
Recognize received frame, the frame having been received no longer is retransmitted.Especially when retransmitting data according to preset window, allow in window
Have been acknowledged that without retransmitting, transfer resource is greatly saved in the frame received.
Received frame is had confirmed that preferably, can delete in the frame of caching.To effectively save local cache resource.
Preferably, one or more continuous frame can be encapsulated as to framing (G-MPDU) transmission.As shown in figure 5, G-
MPDU is made of a series of G-MPDU subframes.As shown in fig. 6, G-MPDU subframe includes G-MPDU delimiter, MPDU and possible
Byte of padding.In addition to the last one G-MPDU subframe, each G-MPDU subframe needs to increase by 0~1 byte of padding, makes each
The length of G-MPDU subframe is the integral multiple of 2 bytes.Shown G-MPDU delimiter is used to position the MPDU unit of G-MPDU.It will
Multiple frames, which are packaged together, to be sent, and when transmitting on the physical channel, executing synchronizing for frame (framing) can be got
Multiple frames, to effectively save physical transfer resource.
The frame acknowledgment response received in step S402 can be the group acknowledge response provided using embodiment one, can also
To be the confirmation response for the single frames that embodiment two provides.
Fourth embodiment
The considerations of for caching capabilities, causes to malfunction beyond caching capabilities in order to prevent, and the embodiment of the present invention also provides
A kind of method for re-transmission, increase are monitored the caching capabilities of local terminal, and detecting caching capabilities, there may be super
Out when risk, opposite end is notified to return to response immediately in time, specifically as shown in fig. 7, comprises step:
Step S701: caching does not receive the frame of confirmation response;
Step S701: judge whether to reach buffer memory capacity threshold value;
Step S701: when reaching buffer memory capacity threshold value, sending confirmation request immediately, returns to frame acknowledgment immediately with instruction
Response.
Preferably, the confirmation request immediately carries in the mark and each Business Stream of one or more Business Stream
The mark of one or more frame, to indicate to return to the confirmation response of the designated frame in specified data flow immediately.
Preferably, the confirmation request immediately can carry the serial number for needing to return the first frame of response on each Business Stream,
To indicate that opposite end returns to the confirmation response of the frame on the Business Stream since the first frame.
In order to more intuitively illustrate, the embodiment of the invention also provides a kind of specific frame format of confirmation request immediately,
As shown in Figure 8.The frame of confirmation request immediately shown in Fig. 8 includes frame head, frame and frame check information (FCS).It include frame in frame head
Control information, such as frame type (management frame perhaps data frame), subtype (specific management frame or specific data
Frame type), version information etc.;Include one or more FID block of information in frame, includes Business Stream in each FID block of information
FID and serial number are identified, needs to return the serial number of the first frame of confirmation response in the serial number business, to indicate opposite end from institute
First frame is stated to start to return to confirmation response, it is corresponding with the first bit of bitmap in the group acknowledge provided in embodiment one
The serial number of frame is corresponding.Each parameter definition can refer to table 4 in frame.
Table 4
Preferably, the embodiment of the invention also provides another modes for realizing confirmation request immediately: by will immediately really
Recognize instruction to be carried in data frame, be sent with data frame, to send confirmation request immediately;The confirmation instruction immediately, is used
Frame acknowledgment response is returned immediately in instruction.
Preferably, confirmation instruction immediately can be carried in the frame head of data frame.
Wherein, described to return to frame acknowledgment response immediately, it is to return to the group acknowledge response in next time cycle.Institute
State next time cycle refer to the ascending physical signal frame period correspond to downstream physical frame period or downstream physical frame period pair
The upward cycle of the upper physical frame of Ying Yu.That is, sending the number that the carrying confirms instruction immediately in the downlink physical period of this frame
When according to frame, the instruction of confirmation immediately is used to indicate opposite end and returns to frame acknowledgment response in the ascending physical signal period of this frame;In this frame
The ascending physical signal period send and carry when confirming the data frame of instruction immediately, the instruction of confirmation immediately is used to indicate opposite end and exists
The downlink physical period of next frame returns to frame acknowledgment response.
Preferably, delayed acknowledgement instruction can also be carried on by the embodiment of the present invention in not up to buffer memory capacity threshold value
In data frame, sent with data frame.The delayed acknowledgement instruction, being used to indicate allows to postpone to return to institute on each Business Stream
There is the confirmation response of unacknowledged data frame.Opposite end refers to when parsing data frame if parsing delayed acknowledgement from data frame
Show, then returns to all unacknowledged frame acknowledgment responses on each Business Stream in available free resource.
The embodiment of the invention also provides the selection that a kind of frame acknowledgment sends opportunity, central access point (CAP) and website
(STA) can transmitting terminal and receiving end each other, specifically include:
If 1, CAP sends management control frame (needing to confirm) and needs to STA, CAP in scheduling of upstream transmissions resource
Resource is reserved for acknowledgement frame, guarantees that STA has an opportunity to will confirm that frame is successfully transmitted.
If 2, CAP sends G-MPDU to STA, and the instruction of the field by being used to indicate frame acknowledgment mode STA is stood
Confirm, then CAP needs to reserve resource for GroupAck frame or ACK frame in scheduling of upstream transmissions resource.
If 3, CAP sends aggregate data frame to STA, and the instruction of the field by being used to indicate frame acknowledgment mode allows
STA delay response, then STA actively can return GroupAck frame when uplink transmission resource has residue, can also wait
GroupAck frame is returned again after receiving the acknowledgement notification immediately of CAP transmission.
If 4, STA sends management control frame (needing to confirm) to CAP, CAP should be in the downlink physical week of next frame
Phase is confirmed.
If 5, STA sends G-MPDU to CAP, and the instruction of the field by being used to indicate frame acknowledgment mode CAP is true immediately
Recognize, then CAP sends GroupAck frame or ACK frame in the downlink physical period of next frame.
If 6, STA sends aggregate data frame to CAP, and the instruction of the field by being used to indicate frame acknowledgment mode allows
CAP delay response, then CAP actively can return GroupAck frame when downlink transfer resource has residue, can also wait
GroupAck frame is returned again after receiving the acknowledgement notification immediately of STA transmission.
5th embodiment
In order to realize that frame acknowledgment method of the embodiment of the present invention, the present invention also propose a kind of device for frame acknowledgment, such as scheme
Shown in 9, comprising:
Package module 901, for the confirmation response of one or more frame to be encapsulated as group acknowledge response;
Sending module 902, for sending the group acknowledge response.
Preferably, the package module 901, for by the confirmation response of one or more frame on same Business Stream
It is encapsulated as Business Stream confirmation response;One or more described Business Stream confirmation response is encapsulated as group acknowledge response.
Preferably, the package module 901, for encapsulating the frame head, frame and FCS of group acknowledge response: being set in frame
It sets one or more FID block of information, includes traffic stream identifier, serial number and bitmap bitmap in the Business Stream confirmation response,
Wherein the bitmap is used to carry the confirmation response of continuous multiple frames, each in bitmap corresponds to a frame really
Recognize response, the serial number is used to indicate the serial number of the corresponding frame of first bit in the bitmap.
Preferably, the package module 901, for each FID block of information to be arranged according to the length of bitmap;It is described
The length of bitmap is not fixed.
Preferably, the package module 901, the length field of bitmap is arranged also in the FID block of information, is used for
Indicate the length of bitmap.
Preferably, the package module 901, is arranged fragment also in the FID block of information and indicates information, to indicate
State carried in bitmap be fragment frame confirmation response, or non-fragment frame confirmation response.
Preferably, the package module 901, the setting management control frame acknowledgement bit also in group acknowledge response, for docking
One is received to be confirmed without sequence number management control frame.
Preferably, the package module 901, is also arranged length field in frame, it is used to indicate all FID block of informations
The sum of length.
Preferably, the confirmation response of the frame is indicating the reception state of frame, including receives and do not receive.
Preferably, further include:
First control module 904 for receiving confirmation request immediately, and controls the 901 encapsulation group of package module accordingly
Confirm that response, and the control sending module 902 send packaged group acknowledge response immediately.
Preferably, the confirmation request immediately carries in the mark and each Business Stream of one or more Business Stream
The mark of one or more frame;First control module 904 controls the Encapsulation Moulds according to the confirmation request immediately
The confirmation response of designated frame in specified data flow is encapsulated as group acknowledge response by block 901.
Preferably, described send immediately, it is to return to the group acknowledge response in next time cycle.It is described next
Time cycle refers to that the ascending physical signal frame period corresponds to the downstream physical frame period or the downstream physical frame period corresponds to upper one
The upward cycle of physical frame.That is, first control module 904, from the downlink physical period of this frame receive it is described immediately
When confirmation request, controls the sending module 902 and send packaged group acknowledge response in the ascending physical signal period of this frame;?
When receiving the confirmation request immediately from the ascending physical signal period of this frame, the sending module 902 is controlled under next frame
The row physics period sends packaged group acknowledge response.
Preferably, further include:
Second control module 904 carries the data frame for confirming instruction immediately for receiving, according to the control of confirmation instruction immediately
It makes the package module 901 and encapsulates group acknowledge response, and to send packaged group immediately true for the control sending module 902
Recognize response.
Preferably, second control module 904, for control the package module 901 by each Business Stream it is all not
The confirmation response of the frame of confirmation is encapsulated as group acknowledge response, and the control sending module 902 sends packaged group immediately
Confirm response.
Preferably, second control module 904 obtains the confirmation immediately and refers to by parsing the frame head of data frame
Show.
Preferably, described send immediately, it is to return to the group acknowledge response in next time cycle;It is described next
Time cycle refers to that the ascending physical signal frame period corresponds to the downstream physical frame period or the downstream physical frame period corresponds to upper one
The upward cycle of physical frame.That is, second control module 904, is receiving carrying immediately from the downlink physical period of this frame
When confirming the data frame of instruction, the ascending physical signal period for controlling the sending module 902 in this frame sends packaged group acknowledge
Response;From the ascending physical signal period of this frame receive carrying confirm the data frame of instruction immediately when, control the sending module
902 send packaged group acknowledge response in the downlink physical period of next frame.
Preferably, further include:
Third control module 905 exists for receiving the data frame for carrying delayed acknowledgement instruction according to delayed acknowledgement instruction
When available free resource, controls the package module 901 and encapsulate group acknowledge response, and the control sending module 902 sends envelope
The group acknowledge response installed.
Sixth embodiment
In order to realize that frame acknowledgment method of the embodiment of the present invention, the present invention also propose another device for being used for frame acknowledgment, such as
Shown in Figure 10, comprising:
Package module 1001 carries one or more business in the group acknowledge request for generating group acknowledge request
The mark for the frame for needing to confirm in the mark of stream and each Business Stream;
Sending module 1002, for sending the group acknowledge request.
Preferably, package module 1001, for encapsulating group acknowledge claim frame, to generate the group acknowledge request;
The group acknowledge request includes frame head, frame and FCS, includes one or more FID information in the frame
Block includes traffic stream identifier FID and serial number in each FID block of information, to need the sequence of the first frame of response on the Business Stream
Mark number as the frame for needing to confirm on the Business Stream, instruction return to frame acknowledgment since the first frame.
Preferably, the package module 1001, is also arranged FID digital section in group acknowledge request, is used to indicate frame
In include FID block of information number.
Preferably, the group acknowledge request is used to indicate the confirmation response for returning to the designated frame in specified data flow immediately.
Preferably, described return to group acknowledge response immediately, it is to return to the group acknowledge response in next time cycle;
Next time cycle refers to that the ascending physical signal frame period corresponds to downstream physical frame period or downlink object
Manage upward cycle of the frame period corresponding to a upper physical frame.That is, if the sending module 1002 is all in the downlink physical of this frame
Phase transmission group acknowledge request, then the confirmation immediately is indicated to be used to indicate and be answered in the ascending physical signal period return frame acknowledgment of this frame
It answers;If the sending module 1002 sends group acknowledge request, the confirmation instruction immediately in the ascending physical signal period of this frame
It is used to indicate and returns to frame acknowledgment response in the downlink physical period of next frame.
According to the disclosed embodiment, those skilled in the art can be made to can be realized or using the present invention.It is right
For those skilled in the art, the various modifications of these embodiments are it will be apparent that and the general principles that define here
It can also be applied to other embodiments on the basis of not departing from the scope and spirit of the present invention.Embodiment described above is only
It for presently preferred embodiments of the present invention, is not intended to limit the invention, all within the spirits and principles of the present invention, is made
Any modification, equivalent substitution, improvement and etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method for frame acknowledgment characterized by comprising
The confirmation response of one or more frame is encapsulated as group acknowledge response, is specifically included:
The confirmation response of one or more frame on same Business Stream is encapsulated as Business Stream confirmation response;It is by one or more
A Business Stream confirmation response is encapsulated as group acknowledge response;
Encapsulate frame head, frame and the frame check information FCS of group acknowledge response;
One or more FID Business Stream block of information is set in frame, is failed to be sold at auction in the FID Business Stream block of information including business
Knowledge, serial number and bitmap bitmap, wherein the bitmap is used to carry the confirmation response of continuous multiple frames, it is every in bitmap
The confirmation response of one correspondence, one frame, the serial number are used to indicate the sequence of the corresponding frame of first bit in the bitmap
Number;
Send the group acknowledge response;After receiving confirmation request immediately or confirmation instruction immediately, described group is returned immediately
Confirm response, specifically include:
Each physical frame period successively includes downstream cycle and upward cycle, is received immediately really in the downlink physical period of this frame
When recognizing request or confirmation instruction immediately, group acknowledge response is returned in the ascending physical signal period of this frame;In the ascending physical signal of this frame
When period receives confirmation request immediately or confirmation instruction immediately, group acknowledge is returned in the downlink physical period of next frame and is answered
It answers;
Central access point and website transmitting terminal and receiving end each other are sent and received one of in the following manner:
(1) if, central access point send and need the management control frame that confirms to website, central access point is passed in dispatching uplink
Resource is reserved when defeated resource for corresponding acknowledgement frame;
(2) if, central access point transmission group Medium Access Control (MAC) Protocol Data Unit (G-MPDU) give website, and it is true by being used to indicate frame
The field instruction website for recognizing mode is confirmed that then central access point is corresponding confirmation in scheduling of upstream transmissions resource immediately
Frame reserves resource;
(3) if, central access point send aggregate data frame to website, and the field by being used to indicate frame acknowledgment mode indicate
Website is allowed to postpone response, then website actively can return group acknowledge frame when uplink transmission resource has residue, or wait
Group acknowledge frame is returned again after receiving the acknowledgement notification immediately of central access point transmission;
(4) if, website send and need the management control frame that confirms to central access point, central access point should be in next frame
The downlink physical period confirmed;
(5) if, website transmission group Medium Access Control (MAC) Protocol Data Unit (G-MPDU) give central access point, and it is true by being used to indicate frame
The field Deictic Center access point for recognizing mode confirms that then central access point sends confirmation in the downlink physical period of next frame immediately
Frame;
(6) if, website send aggregate data frame to central access point, and the field by being used to indicate frame acknowledgment mode indicate
Allow central access point to postpone response, then central access point actively returns group acknowledge frame when downlink transfer resource has residue,
Or group acknowledge frame is returned again after waiting the acknowledgement notification immediately for receiving website transmission.
2. the method as described in claim 1, it is characterised in that:
According to the length of bitmap, each FID Business Stream block of information is set;The length of the bitmap is not fixed;And/or
The length field of bitmap is set in the FID Business Stream block of information, is used to indicate the length of bitmap;And/or
Length field is set in frame, is used to indicate the sum of the length of all FID Business Stream block of informations;And/or
Fragment is set in the FID Business Stream block of information and indicates information, is fragment with indicate to carry in the bitmap
The confirmation response of frame, or non-fragment frame confirmation response;And/or
In frame setting management control frame acknowledgement bit, for receive one without sequence number management control frame confirm.
3. method according to claim 1 or 2, it is characterised in that:
The confirmation request immediately carries one or more in the mark and each Business Stream of one or more Business Stream
The mark of frame;
Return to the confirmation response of the designated frame in specified data flow immediately according to the confirmation request immediately.
4. method according to claim 1 or 2, it is characterised in that:
The frame head of the frame is parsed, confirmation instruction immediately is therefrom obtained.
5. a kind of device for frame acknowledgment characterized by comprising
Package module, for the confirmation response of one or more frame to be encapsulated as group acknowledge response;
Sending module, for sending the group acknowledge response;
Wherein, the package module, for the confirmation response of one or more frame on same Business Stream to be encapsulated as business
Stream confirmation response;One or more described Business Stream confirmation response is encapsulated as group acknowledge response;
Wherein, the package module, for encapsulating the frame head, frame and FCS of group acknowledge response, in frame be arranged one or
Multiple FID Business Stream block of informations, include traffic stream identifier, serial number and bitmap bitmap in Business Stream confirmation response, wherein
The bitmap is used to carry the confirmation response of continuous multiple frames, each confirmation for corresponding to a frame in bitmap is answered
It answers, the serial number is used to indicate the serial number of the corresponding frame of first bit in the bitmap;
Control module for receiving confirmation request immediately or immediately confirmation instruction, and controls the package module encapsulation accordingly
Group acknowledge response, and the control sending module send packaged group acknowledge response immediately;
Each physical frame period successively includes downstream cycle and upward cycle, described in receiving from the downlink physical period of this frame
Immediately when confirmation request, the control module controls the sending module and sends packaged group in the ascending physical signal period of this frame
Confirm response;When from the confirmation request immediately is received in the ascending physical signal period of this frame, the sending module is controlled under
The downlink physical period of one frame sends packaged group acknowledge response;
The control module, is specifically used for:
(1) if, central access point send and need the management control frame that confirms to website, central access point is passed in dispatching uplink
Resource is reserved when defeated resource for corresponding acknowledgement frame;
(2) if, central access point transmission group Medium Access Control (MAC) Protocol Data Unit (G-MPDU) give website, and it is true by being used to indicate frame
The field instruction website for recognizing mode is confirmed that then central access point is corresponding confirmation in scheduling of upstream transmissions resource immediately
Frame reserves resource;
(3) if, central access point send aggregate data frame to website, and the field by being used to indicate frame acknowledgment mode indicate
Website is allowed to postpone response, then website actively can return group acknowledge frame when uplink transmission resource has residue, or wait
Group acknowledge frame is returned again after receiving the acknowledgement notification immediately of central access point transmission;
(4) if, website send and need the management control frame that confirms to central access point, central access point should be in next frame
The downlink physical period confirmed;
(5) if, website transmission group Medium Access Control (MAC) Protocol Data Unit (G-MPDU) give central access point, and it is true by being used to indicate frame
The field Deictic Center access point for recognizing mode confirms that then central access point sends confirmation in the downlink physical period of next frame immediately
Frame;
(6) if, website send aggregate data frame to central access point, and the field by being used to indicate frame acknowledgment mode indicate
Allow central access point to postpone response, then central access point actively returns group acknowledge frame when downlink transfer resource has residue,
Or group acknowledge frame is returned again after waiting the acknowledgement notification immediately for receiving website transmission.
6. device as claimed in claim 5, it is characterised in that:
The package module, for each FID Business Stream block of information to be arranged according to the length of bitmap;The length of the bitmap is not
It is fixed;And/or
The length field of bitmap is arranged also in the FID Business Stream block of information, is used to indicate bitmap for the package module
Length;And/or
The package module, is also arranged length field in frame, be used to indicate all FID Business Stream block of informations length it
With;And/or
The package module is arranged fragment also in the FID Business Stream block of information and indicates information, to indicate in the bitmap
Carrying be fragment frame confirmation response, or non-fragment frame confirmation response;And/or
The package module, the setting management control frame acknowledgement bit also in group acknowledge response, for receiving one without sequence
Number management control frame confirmed.
7. such as device described in claim 5 or 6, it is characterised in that:
The confirmation request immediately carries one or more in the mark and each Business Stream of one or more Business Stream
The mark of frame;
The control module controls the package module for the designated frame in specified data flow according to the confirmation request immediately
Confirmation response is encapsulated as group acknowledge response.
8. such as device described in claim 5 or 6, it is characterised in that:
The control module obtains the confirmation instruction immediately by parsing the frame head of frame.
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CN201510864249.1A CN105429737B (en) | 2012-03-23 | 2012-03-23 | A kind of method and apparatus for frame acknowledgment |
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CN201510860923.9A Pending CN105450362A (en) | 2012-03-23 | 2012-03-23 | Frame acknowledgment method and device |
CN201510864249.1A Active CN105429737B (en) | 2012-03-23 | 2012-03-23 | A kind of method and apparatus for frame acknowledgment |
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CN106685604A (en) * | 2016-11-28 | 2017-05-17 | 北京新岸线移动通信技术有限公司 | Data transmission control method, system and device |
CN107276728B (en) * | 2017-06-12 | 2019-05-31 | 北京三快在线科技有限公司 | A kind of data transmission method and device |
CN113497639B (en) * | 2020-04-01 | 2022-09-02 | 华为技术有限公司 | Communication method, device, system and storage medium for power line communication system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101006684A (en) * | 2004-08-24 | 2007-07-25 | 三星电子株式会社 | Method and apparatus for transmitting block ack frame |
CN101124762A (en) * | 2004-07-30 | 2008-02-13 | 诺基亚公司 | System and method for variable length acknowledgements in a shared resource network |
CN101208896A (en) * | 2005-06-29 | 2008-06-25 | 英特尔公司 | Block acknowledgements with reduced recipient state information |
CN101461181A (en) * | 2006-04-24 | 2009-06-17 | 诺基亚公司 | Reliable multicast/broadcast in a wireless network |
CN101582756A (en) * | 2008-05-14 | 2009-11-18 | 北京中电华大电子设计有限责任公司 | Method for realizing immediate block reply mechanism of wireless local area network |
CN102067497A (en) * | 2008-06-26 | 2011-05-18 | 汤姆逊许可公司 | Method and apparatus for acknowledgement and retransmission of multicast data in wireless local area networks |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6438108B1 (en) * | 1999-03-11 | 2002-08-20 | Telefonaktiebolaget L M Ericsson (Publ) | System for improved transmission of acknowledgements within a packet data network |
US7095739B2 (en) * | 2003-11-25 | 2006-08-22 | Cisco Technology, Inc. | Reliable multicast communication |
CN101166186A (en) * | 2006-10-20 | 2008-04-23 | 鲍东山 | Construction method for physical layer frame of OFDM WLAN and its response method |
CN101478377A (en) * | 2008-01-02 | 2009-07-08 | 华为技术有限公司 | Method and apparatus for message response |
-
2012
- 2012-03-23 CN CN201510863348.8A patent/CN105406946A/en not_active Withdrawn
- 2012-03-23 CN CN201510860923.9A patent/CN105450362A/en active Pending
- 2012-03-23 CN CN201510864249.1A patent/CN105429737B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101124762A (en) * | 2004-07-30 | 2008-02-13 | 诺基亚公司 | System and method for variable length acknowledgements in a shared resource network |
CN101006684A (en) * | 2004-08-24 | 2007-07-25 | 三星电子株式会社 | Method and apparatus for transmitting block ack frame |
CN101208896A (en) * | 2005-06-29 | 2008-06-25 | 英特尔公司 | Block acknowledgements with reduced recipient state information |
CN101461181A (en) * | 2006-04-24 | 2009-06-17 | 诺基亚公司 | Reliable multicast/broadcast in a wireless network |
CN101582756A (en) * | 2008-05-14 | 2009-11-18 | 北京中电华大电子设计有限责任公司 | Method for realizing immediate block reply mechanism of wireless local area network |
CN102067497A (en) * | 2008-06-26 | 2011-05-18 | 汤姆逊许可公司 | Method and apparatus for acknowledgement and retransmission of multicast data in wireless local area networks |
Non-Patent Citations (1)
Title |
---|
Specific requirements part11: Wireless Lan Medium Access Control and Physical Layer specifications Amendment 5:Enhancements for Higher Throughput;IEEE Standard;《IEEE》;20091029;第15,30-43以及130页 |
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