CN107509251A - A kind of back-off method and device - Google Patents
A kind of back-off method and device Download PDFInfo
- Publication number
- CN107509251A CN107509251A CN201610415271.2A CN201610415271A CN107509251A CN 107509251 A CN107509251 A CN 107509251A CN 201610415271 A CN201610415271 A CN 201610415271A CN 107509251 A CN107509251 A CN 107509251A
- Authority
- CN
- China
- Prior art keywords
- website
- way
- time
- patterns
- value
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000002708 enhancing effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 description 15
- 238000004891 communication Methods 0.000 description 12
- 230000002860 competitive effect Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 3
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 3
- 238000005314 correlation function Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- ATRSAWXXYCBXLI-UHFFFAOYSA-N 1-(3-bromophenyl)propan-2-amine Chemical compound CC(N)CC1=CC=CC(Br)=C1 ATRSAWXXYCBXLI-UHFFFAOYSA-N 0.000 description 1
- 101000752249 Homo sapiens Rho guanine nucleotide exchange factor 3 Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 102100021689 Rho guanine nucleotide exchange factor 3 Human genes 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the present application provides a kind of back-off method applied to WLAN, and this method includes：Website starts to keep out of the way for the first time, and the initial value of the backoff counter of website is V；Website receives trigger frame, and website stops to keep out of the way for the first time, and the backoff counter value of website is V1, V >=V1；Website carries out uplink according to trigger frame；Website starts to keep out of the way for the second time after completing uplink, and the backoff counter value of website is V1+V2, and V2 is the value that website generates at the time of beginning is kept out of the way for the second time.The embodiment of the present application additionally provides corresponding communicator.By the above-mentioned means, the embodiment of the present application is kept out of the way twice by website realizes channel access, compared with the only website by once keeping out of the way access channel, the fairness of different site channel accesses ensure that.
Description
Technical field
The invention belongs to communication technical field, more particularly to a kind of back-off method and device.
Background technology
It is existing (English based on OFDM：Orthogonal Frequency-Division Multiplexing, Chinese：Just
Hand over frequency division multiplexing) technology WLAN (English：Wireless local Access Network, referred to as：WLAN) standard
The versions such as 802.11a, 802.11n, 802.11ac by progressively evolution form, at present IEEE (English：Institute of
Electrical and Electronic Engineers, Chinese：IEEE) 802.11 normal structures
Referred to as HEW (High Efficiency WLAN, high efficiency WLAN) wlan standard of new generation is had been turned on
802.11ax standardization effort, by introducing OFDMA (Orthogonal Frequency Division Multiple
Access, orthogonal frequency division multiplexing multiple access) technology, 802.11ax can further improve transmission of the WLAN under intensive user scene
Performance.
802.11ax provides that website can be carried out based on enhancing distributed channel access (English simultaneously：Enhanced
Distributed Channel Access, referred to as：EDCA competition transmission and uplink multi-users transmission).Website based on
The trigger frame of access point transmission is received in EDCA backoff procedure, uplink multi-users transmission opportunity is obtained, when website is completed on this
After row multi-user transmission, how the backoff counter based on EDCA of website is set.For above-mentioned scene, prior art does not have
Provide corresponding technical scheme.
The content of the invention
In view of this, the present invention provides a kind of back-off method and communicator, is faced for solving website based on EDCA's
When competition transmission and uplink multi-users transmission, the problem of how backoff counter is set.
In a first aspect, the embodiments of the invention provide a kind of back-off method, applied to WLAN WLAN, this method bag
Include：
Website starts to keep out of the way for the first time, and the initial value of the backoff counter of the website is V；The website receives triggering
Frame, the website termination first time keep out of the way, and the backoff counter value of the website is V1, V >=V1；The website is according to institute
State trigger frame and carry out uplink；The website starts to keep out of the way for the second time after completing the uplink, and the website is kept out of the way
Counter Value is V1+V2, and V2 is the value that the website generates at the time of beginning is kept out of the way for the second time.
In a kind of possible implementation, the V1 is that the website accesses EDCA by the first enhancing distributed channel
The value of parameter set generation, the V2 are the value that the website is generated by the 2nd EDCA parameter sets.
Second aspect, the embodiments of the invention provide a kind of back-off method, applied to WLAN WLAN, this method bag
Include：
Website sends the first radio frames, and first radio frames carry the first configured information, and first configured information is used
To indicate operator scheme that the website is supported, the operator scheme includes MU only patterns, SU only patterns and MU+
One or more in SU patterns；
The website receives acknowledgement frame.
In a kind of possible implementation, methods described also includes：The second radio frames of the website reception, described second
Radio frames carry the second configured information, and second configured information is used to indicate that access point indicates the operation mould that the website uses
Formula, the operator scheme include MU only patterns, one kind in SU only patterns and MU+SU patterns.
The third aspect, the embodiments of the invention provide a kind of communicator, applied to WLAN WLAN, communication dress
Put including：
BBP, for keeping out of the way for the first time, the initial value of backoff counter is V；The BBP, is additionally operable to
Stopping the first time keeps out of the way, and the backoff counter value is V1, V >=V1；The BBP, it is additionally operable to move back for the second time
Keep away, the backoff counter value is V1+V2, and V2 is to keep out of the way the value generated at the time of beginning for the second time；
Transceiver, for receiving trigger frame；The transceiver, it is additionally operable to carry out uplink according to the trigger frame.
In a kind of possible implementation, the V1 is that the BBP is connect by the first enhancing distributed channel
Enter the value of EDCA parameter sets generation, the V2 is the value that the BBP is generated by the 2nd EDCA parameter sets.
Fourth aspect, the embodiments of the invention provide a kind of communicator, applied to WLAN WLAN, communication dress
Put including：
BBP, for generating the first radio frames, first radio frames carry the first configured information, and described first
Configured information is used to refer to the operator scheme that the website is supported, the operator scheme includes MU only patterns, SU only
One or more in pattern and MU+SU patterns；
Transceiver, for sending the first radio frames；The transceiver, it is additionally operable to receive acknowledgement frame.
In a kind of possible implementation, the transceiver, it is additionally operable to receive the second radio frames, second radio frames
The second configured information is carried, second configured information is used to indicate that access point indicates the operator scheme that the website uses, institute
State operator scheme and include MU only patterns, one kind in SU only patterns and MU+SU patterns.
The embodiments of the invention provide a kind of back-off method applied to WLAN, this method includes：Website starts
Keep out of the way for the first time, the initial value of the backoff counter of website is V；Website receives trigger frame, and website stops to keep out of the way for the first time, website
Backoff counter value be V1, V >=V1；Website carries out uplink according to trigger frame；Website starts the after completing uplink
Secondary to keep out of the way, the backoff counter value of website is V1+V2, and V2 is the value that website generates at the time of beginning is kept out of the way for the second time.This
Inventive embodiments are kept out of the way twice by website realizes channel access, the website phase with only accessing channel by once keeping out of the way
Than ensure that the fairness of different site channel accesses.
Brief description of the drawings
Fig. 1 is the application scenario diagram of the present invention.
Fig. 2 is the back-off method flow chart of embodiment 1 in the present invention.
Fig. 3 is the back-off method interaction figure of embodiment 1 in the present invention.
Fig. 4 is the frame assumption diagram of the first configured information of embodiment 2 in the present invention.
Fig. 5 is the device physical structure chart of embodiment 4 in the present invention.
Fig. 6 is the device physical structure chart of embodiment 5 in the present invention.
Fig. 7 is the device physical structure chart of embodiment 6 in the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is embodied below in conjunction with the accompanying drawings
Example is described in further detail.For the comprehensive understanding present invention, numerous details are refer in the following detailed description.
The embodiment of the present invention can apply to WLAN, and WLAN accepted standards are IEEE802.11 series at present.WLAN can
With including multiple Basic Service Sets (English：Basic Service Set, referred to as：BSS), the network node that basic service is concentrated
For website (English：Station, referred to as：STA), website includes the website of access point class (referred to as：AP, English：Access
Point) and non-access point class website (English：None Access Point Station, referred to as：Non-AP STA).Each
Basic Service Set can include an AP and multiple Non-AP STA for being associated with the AP.
Access point class website, also referred to as wireless access points or focus etc..AP major deployments are in family, inside buildings
And inside garden, typical covering radius is tens meters to rice up to a hundred.AP is equivalent to a connection wired network and the bridge of wireless network
Beam, its main function are to connect together each wireless network clients, then by wireless network access network based on ethernet.Specifically
Ground, AP can be with WiFi (English：Wireless Fidelity, Chinese：Wireless Fidelity) chip terminal device or net
Network equipment.AP can support a variety of systems such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a
Formula.
Website (the English of non-access point class：None Access Point Station, referred to as：Non-AP STA), can be with
It is wireless communications chips, wireless senser or wireless communication terminal.Specifically, such as：Support the intelligent hand of WiFi communication function
Machine, tablet personal computer and personal computer, the set top box and intelligent television of WiFi communication function are supported, support WiFi communication function
Intelligent wearable device, support the vehicular communication equipment of WiFi communication function and support the unmanned plane of WiFi communication function.Website
The multiple types such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a can be supported.Need to illustrate
, Non-AP STA are hereafter referred to as STA.
It should be noted that Chineses and English name of the AP with access point for the same entity of expression in present patent application
Claim, Chineses and English name of the STA with website for the same entity of expression.
Fig. 1 is the system schematic of typical WLAN deployment scene, including AP and 3 STA, AP and a STA1-
STA3 is communicated.For 802.11 families, working group TGax introduces OFDMA (English for next generation wlan standard：
Orthogonal Frequency Division Multiple Access, Chinese：OFDM) and up MU-MIMO
(English：Multi User-Multiple Input and Multiple Output, Chinese：Multi-user's multiple-input, multiple-output) technology.
After above-mentioned technology, STA1-STA3 can in the different frequency resource of same time or same time different spaces
On stream data are transmitted with AP.
Embodiment 1
The embodiment of the present invention 1 provides a kind of back-off method, and this method can apply to access point and website, such as：Fig. 1
In AP and STA1-STA3, the access point and website can support next generation wlan standard, such as：802.11ax standard.Fig. 2
It is the flow chart of the back-off method, Fig. 3 is the interaction figure of the back-off method, is comprised the following steps that：
Step 101：Website starts to keep out of the way for the first time, and the initial value of the backoff counter of the website is V.
Step 102：The website receives trigger frame, and the website termination first time keeps out of the way, and the website is kept out of the way
Counter Value is V1, V >=V1.
Step 103：The website carries out uplink according to the trigger frame.
Step 104：The website starts to keep out of the way for the second time after completing the uplink, the backoff counter of the website
It is the value that the website generates at the time of beginning is kept out of the way for the second time to be worth for V1+V2, V2.
Alternatively, the V1 is the value that the website accesses the generation of EDCA parameter sets by the first enhancing distributed channel,
The V2 is the value that the website is generated by the 2nd EDCA parameter sets.Wherein, the first EDCA parameter sets are multiplexed existing 802.11e
EDCA parameter sets in standard.
Further, the value of the first EDCA parameter sets and the 2nd EDCA parameter sets comprises at least following several ways：
1) the 2nd EDCA parameter sets are identical with the first EDCA parameter sets, wherein, EDCA parameter refers mainly to include CWmin
(English：Minimum contention window, Chinese：Minimum competition window), CWmax (English：maximum
Contention window, Chinese：Maximum contention window), AIFS (English：Arbitrary inter frame space, in
Text：Any interframe space) etc., being defined in 802.11e standards for above-mentioned parameter is explained in detail, and present patent application is no longer superfluous
State.
2) the 2nd EDCA parameter sets are different from the first EDCA parameter sets, wherein including the situation of two kinds of subdivisions.
Situation 2.1, the priority of the EDCA parameter sets of priority ratio the first of the 2nd EDCA parameter sets is high, is embodied in,
For identical AC (English：Access Category, Chinese：Access style) Business Stream, the AIFS's of the 2nd EDCA parameter sets
Value is smaller than the AIFS of the first EDCA parameter sets value, or, the CWmax of the 2nd EDCA parameter sets is than the first EDCA parameter sets
CWmax it is small, or, the CWmin of the 2nd EDCA parameter sets is smaller than the CWmin of the first EDCA parameter sets.
Situation 2.2, the priority of the EDCA parameter sets of priority ratio the first of the 2nd EDCA parameter sets is low, is embodied in,
For identical AC Business Stream, the middle AIFS of the 2nd EDCA parameter sets value of the value than the AIFS of the first EDCA parameter sets
Greatly, or, the CWmax of the 2nd EDCA parameter sets is bigger than the CWmax of the first EDCA parameter sets, or, the 2nd EDCA parameter sets
CWmin is bigger than the CWmin of the first EDCA parameter sets.
You need to add is that the first EDCA parameter sets and the 2nd EDCA parameter sets send broadcast message to station by access point
Point, the broadcast message include the forms such as beacon frame.
It should be noted that backoff procedure includes in step 101：1) CWmin is assigned to CW by website, 2) website [0,
CW] random number is selected in section, kept out of the way after being set to backoff counter value.
After if backoff counter is 0, website obtains channel access, then website waits a time interval, between the time
Every with AIFS value positive correlations, after website completes the wait of the time interval, send data.
After if backoff counter is 0, there is no channel access, then CW value doubles, and website continues in [0, CW]
A random number is selected in section, repeats said process, wherein CW value is less than CWmax.
It should be noted that in step 102, when website starts to receive trigger frame, website stops to keep out of the way for the first time, now stood
The backoff counter value V1 of point keeps constant.When website has just started to keep out of the way for the first time, trigger frame is just received, then website moves back
Keep away initial value Vs of the Counter Value V1 equal to the backoff counter of website.
It should be noted that website carries out uplink including website according in the instruction of trigger frame transmission in step 103
For row physical layer protocol data unit PPDU to AP, website receives the acknowledgement frame that access point is sent, and the acknowledgement frame confirms including block
(English：Block ACK, referred to as：BA) frame or multi-user block acknowledgement frame (abbreviation：M-BA) frame.Also, in above-mentioned back-off method,
Step 102 and step 103 can be repeatedly.
The embodiment of the present invention is kept out of the way twice by website realizes channel access, wherein the Counter Value kept out of the way for the first time
V1 is that the website accesses EDCA generations by the first enhancing distributed channel, and the Counter Value V2 kept out of the way for the second time is institute
State website to generate by the 2nd EDCA, by the above-mentioned means, compared with the only website by once keeping out of the way access channel, ensure that
The fairness of different site channel accesses.
Embodiment 2
The embodiment of the present invention 2 provides a kind of back-off method, and this method can apply to access point and website, such as：Fig. 1
In AP and STA1-STA3, the access point and website can support next generation wlan standard, such as：802.11ax standard.This is moved back
Keep away comprising the following steps that for method：
Step 201：Website sends the first radio frames, and first radio frames carry the first configured information, and described first refers to
Show that information is used to refer to the operator scheme that the website is supported, the operator scheme includes MU only patterns, SU only moulds
One or more in formula and MU+SU patterns.
Step 202：The website receives acknowledgement frame.
It should be noted that step 201 and step 202, which are website and access point, carries out operator scheme negotiation.
Specifically, MU only patterns refer to the STA do not use single user competitive way (such as EDCA competitive ways,
DCF competitive ways etc.) data frame is sent, and AP can only be waited to send trigger frame and trigger its progress uplink.SU only patterns
Refer to that STA sends data frame only with single user competitive way (such as EDCA competitive ways, DCF competitive ways etc.)；The SU+MU
Pattern refers to that STA can both use single user competitive way (such as EDCA competitive ways, DCF competitive ways etc.) to send data frame,
AP can also be waited to send trigger frame and trigger its progress uplink.
The present embodiment is not limited the indicating mode of Three models, including at least implementation below：
Embodiment 1：First configured information, the one bitmap (English comprising 3 bits：Bitmap) represent, institute
Whether each stated in the expression Three models of each bit in bitmap is supported, if bitmap is as described in " 101 " represent
STA supports MU only patterns and SU+MU patterns, does not support SU only patterns.Wherein, 3 pairs between bit and pattern
It should be related to and not limit.
Embodiment 2：First configured information includes 3 fields, corresponds to MU only patterns, SU only patterns respectively
And SU+MU patterns.
It should be noted that first configured information can be carried on HE capability information
In field, the HE capability information field can be located in HE capability element.Institute
Stating HE capability element can carry in association request Association request frames, as shown in Figure 4.
Alternatively, methods described also includes：
The website receives the second radio frames, and second radio frames carry the second configured information, the second instruction letter
Cease for indicating that access point indicates the operator scheme that the website uses, the operator scheme includes MU only patterns, SU
One kind in only patterns and MU+SU patterns.
It should be noted that the action after website the second radio frames of reception includes scenario described below.
Situation 1：The website sends acknowledgement frame, and the acknowledgement frame includes information or NACK messages certainly.Wherein, believe certainly
Breath refers to STA by using the operator scheme indicated by AP, and NACK messages refer to operator scheme of the STA refusals using AP instructions.
Situation 2：If the radio frames are beacon frames, now website does not send acknowledgement frame, and AP gives tacit consent to station replies certainly
Information.
Preferably, the second configured information carries MU only patterns, and now AP indicates that STA enters MU only patterns, works as net
When network load is larger, if STA is still carried out data transmission using single user mode competitive channels such as EDCA, conflict will be greatly increased
Probability, channel access probability is reduced, at this moment AP can notify STA to enter MU only patterns, be easy to AP to obtain channel and send triggering
Frame carries out uplink to trigger STA.
You need to add is that in addition to AP indicates operator scheme to STA, STA can also carry out operation mould to request AP
The conversion of formula, flow are as follows：
Step 1：STA carries configured information to AP sending mode conversion and control frames in the patten transformation control frame, described
Configured information is used to indicate that the STA wishes the operator scheme used, and the operator scheme includes MU only patterns, SU only
One kind in pattern and MU+SU patterns.
Step 2：AP sends acknowledgement frame to the STA.Similarly, positive acknowledgment or negative can be included in the acknowledgement frame
The configured information of confirmation, positive acknowledgment refer to that STA can use the operator scheme of request, and NACK refers to that STA can not be used
The operator scheme of request.
In the embodiment of the present invention, website reports the operator scheme itself supported to access point, and receives access point and send
Operator scheme switching instruction.By the above-mentioned means, access point realizes the scheduling to website, collision probability is reduced, improves letter
Road access probability.
Embodiment 3
The embodiment of the present invention 3 provides a kind of back-off method, and this method can apply to access point and website, such as：Fig. 1
In AP and STA1-STA3, the access point and website can support next generation wlan standard, such as：802.11ax standard.This is moved back
Keep away comprising the following steps that for method：
Step 301：Website sends Buffer Status Report BSR；
Step 302：The website receives acknowledgement frame；
Step 303：The website is kept out of the way using the 2nd EDCA parameter sets.
It should be noted that it has been noted that website can use the first EDCA parameter sets and the 2nd EDCA to join in embodiment 1
Manifold is kept out of the way, and realizes channel access.The embodiment of the present invention 3 proposes, when AP receives the Buffer Status Report of STA transmissions
(English：Buffer status report, referred to as：When BSR), because now AP can trigger the STA by the way of scheduling
Upstream data is sent, therefore STA can be notified to be kept out of the way using the 2nd EDCA parameter sets, avoids conflicting with AP generations.
It should be noted that BSR can be carried in QoS control field, can also be in HE control
Carried in field.For the pattern switching information in step 302, can be carried in the HE control field of acknowledgement frame,
It can also be carried in frame control field, a new control domain can also be defined to carry, the present embodiment is to this
Do not limit.
Realize channel access it should be noted that the BSR in step 301 is kept out of the way by website by the first EDCA and send.
In step 302, website receives acknowledgement frame.STA will be kept out of the way using the 2nd EDCA parameter sets in step 303 realizes that channel access is concurrent
Send data.
In the embodiment of the present invention, after website sends Buffer Status Report, the acknowledgement frame of access point transmission is received, website is adopted
Kept out of the way with multi-user EDCA and realize channel access and send data.By the above-mentioned means, access point realizes the scheduling to website, drop
Low collision probability, improve channel access probability.
Embodiment 4
Fig. 5 is refer to, the communicator for being used to keep out of the way in a kind of WLAN provided for the embodiment of the present invention 4 shows
Meaning property block diagram, the communicator is, for example, access point, either realizes the special circuit or chip of correlation function.The communicator
1000 include processor 1010, memory 1020, BBP 1030, transceiver 1040, antenna 1050, bus 1060 and use
Family interface 1070.The communicator can be the STA1-STA3 shown in Fig. 1.
Specifically, processor 1010 controls the operation of communicator 1000, and processor can be general processor, numeral letter
Number processor, application specific integrated circuit, field programmable gate array or other PLDs.Memory 1020 can wrap
Read-only storage and random access memory are included, and instruction and data, a part for memory 1020 are provided to processor 1010
Nonvolatile RAM (NVRAM) can also be included.Processor 1010 generally performs the program in memory 1020
Instruction, realizes the logical operation and arithmetical operation of back-off method in the application.
BBP 1030 be used for generate baseband signal (such as：Frame or packet), or the letter of the base band to receiving
Number carry out parsing and obtain data, wherein BBP includes encoder and modulator, and encoder can improve baseband signal
Robustness, overcome interference and decline in wireless propagation environment, reduce mistake caused by transmission.Modulator can pass according to wireless
Environment is broadcast, chooses suitable signal modulation mode.
Transceiver 1040 includes transtation mission circuit and receiving circuit, and transtation mission circuit is used for the base band that BBP 1030 generates
Signal is modulated using up-conversion, obtains the carrier signal of high frequency, the carrier signal of high frequency is launched by antenna 1050, receiving circuit
The high-frequency signal that antenna 1050 is received uses down-conversion operation, obtains the baseband signal of low frequency.The wherein number of antenna 1050
For one or more.Communicator 1000 can also include user interface 1070, and user interface 1070 includes keyboard, sound pick-up
And/or touch-screen.User interface 1070 can transmit content and control operation to communicator 1000.
Each component of communicator 1000 is coupled by bus 1060, and wherein bus system 1060, which is removed, includes number
Outside bus, in addition to power bus, controlling bus and status signal bus in addition.But for the sake of clear explanation, in figure
Various buses are all designated as bus system 1060.It should be noted that the above-mentioned description for access point structures, after can be applied to
Continuous embodiment.
BBP 1030, for keeping out of the way for the first time, the initial value of backoff counter is V；The BBP, also
Keep out of the way for stopping the first time, the backoff counter value is V1, V >=V1；The BBP, it is additionally operable to second
Keep out of the way, the backoff counter value is V1+V2, and V2 is to keep out of the way the value generated at the time of beginning for the second time；
Transceiver 1040, for receiving trigger frame；The transceiver, it is additionally operable to carry out up biography according to the trigger frame
It is defeated.
Alternatively, the V1 is that the BBP accesses the generation of EDCA parameter sets by the first enhancing distributed channel
Value, the V2 is the value that is generated by the 2nd EDCA parameter sets of the BBP.
It should be noted that the operation that the BBP 1030 performs can be held by processing unit or processing module
OK.The operation that the transceiver 1040 performs can be performed by Transmit-Receive Unit or transceiver module.
It should be noted that the first EDCA parameter sets and the 2nd EDCA parameter sets have been described in detail in embodiment 1, no
Repeat again.
The BBP of communicator is kept out of the way twice in the embodiment of the present invention realizes channel access, wherein for the first time
The Counter Value V1 kept out of the way accesses EDCA generations, the Counter Value V2 kept out of the way for the second time by the first enhancing distributed channel
Generated by the 2nd EDCA, by the above-mentioned means, compared with the only website by once keeping out of the way access channel, ensure that different stations
The fairness of point channel access.
Embodiment 5
A kind of schematic block diagram for communicator for back-off method that the embodiment of the present application 5 provides, as shown in fig. 6,
The device is, for example, access point, website, base station or user terminal, and the device can also be to realize that the special of correlation function integrates
Circuit (English：Application Specific Integrated Circuit, referred to as：) or chip ASIC.The device
1100 include processor 1110, memory 1120, BBP 1130, transceiver 1140, antenna 1150, bus 1160 and use
Family interface 1170.The device can be the STA1-STA3 shown in Fig. 1.Each component of device 1100 is existing detailed in example 4
Thin explaination, is repeated no more.
BBP 1130, for generating the first radio frames, first radio frames carry the first configured information, described
First configured information is used to refer to the operator scheme that the website is supported, the operator scheme includes MU only patterns, SU
One or more in only patterns and MU+SU patterns；
Transceiver 1140, for sending the first radio frames；The transceiver, it is additionally operable to receive acknowledgement frame.
Alternatively, the transceiver, it is additionally operable to receive the second radio frames, second radio frames carry the second instruction letter
Breath, second configured information are used to indicate that access point indicates the operator scheme that the website uses, and the operator scheme includes
One kind in MU only patterns, SU only patterns and MU+SU patterns.
It should be noted that the operation that the BBP 1030 performs can be held by processing unit or processing module
OK.The operation that the transceiver 1040 performs can be performed by Transmit-Receive Unit or transceiver module.
In the embodiment of the present invention, the transceiver of communicator reports the operator scheme itself supported, and receives operation mould
Formula switching instruction.By the above-mentioned means, reducing collision probability, channel access probability is improved.
Embodiment 6
A kind of schematic block diagram for communicator for back-off method that the embodiment of the present application 6 provides, as shown in fig. 7,
The device is, for example, access point, website, base station or user terminal, and the device can also be to realize that the special of correlation function integrates
Circuit (English：Application Specific Integrated Circuit, referred to as：) or chip ASIC.The device
1200 include processor 1210, memory 1220, BBP 1230, transceiver 1240, antenna 1250, bus 1260 and use
Family interface 1270.The device can be the STA1-STA3 shown in Fig. 1.Each component of device 1200 is existing detailed in example 4
Thin explaination, is repeated no more.
BBP 1230, for being kept out of the way using the 2nd EDCA parameter sets.
Transceiver 1240, for sending Buffer Status Report BSR；The transceiver, it is additionally operable to receive acknowledgement frame.
It should be noted that it has been noted that website can use the first EDCA parameter sets and the 2nd EDCA to join in embodiment 1
Manifold is kept out of the way, and realizes channel access.The embodiment of the present invention 6 proposes, when AP receives the BSR of STA transmissions, due to now
AP can be triggered the STA by the way of scheduling and send upstream data, therefore STA can be notified to enter using the 2nd EDCA parameter sets
Row is kept out of the way, and avoids conflicting with AP generations.
In the embodiment of the present invention, after the transceiver transmission Buffer Status Report of communicator, acknowledgement frame, communication dress are received
The BBP put is kept out of the way using multi-user EDCA realizes channel access.By the above-mentioned means, reducing collision probability, improve
Channel access probability.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Software is helped to add the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but the former is in many cases
More preferably embodiment.Based on such understanding, technical scheme substantially contributes to prior art in other words
Part can be embodied in the form of software product, the computer software product is stored in the storage medium that can be read,
Such as the floppy disk of computer, hard disk or CD etc., including some instructions are make it that a computer equipment (can be individual calculus
Machine, server, or network equipment etc.) perform method described in each embodiment of the present invention.
Claims (8)
- A kind of 1. back-off method, applied to WLAN WLAN, it is characterised in that methods described includes：Website starts to keep out of the way for the first time, and the initial value of the backoff counter of the website is V；The website receives trigger frame, and the website termination first time keeps out of the way, and the backoff counter value of the website is V1, V≥V1；The website carries out uplink according to the trigger frame；The website starts to keep out of the way for the second time after completing the uplink, and the backoff counter value of the website is V1+V2, V2 The value generated for the website at the time of beginning is kept out of the way for the second time.
- 2. according to the method for claim 1, it is characterised in that the V1 is that the website passes through the distributed letter of the first enhancing The value of road access EDCA parameter set generations, the V2 is the value that the website is generated by the 2nd EDCA parameter sets.
- A kind of 3. back-off method, applied to WLAN WLAN, it is characterised in that methods described includes：Website sends the first radio frames, and first radio frames carry the first configured information, and first configured information is used to refer to Show the operator scheme that the website is supported, the operator scheme includes MU only patterns, SU only patterns and MU+SU moulds One or more in formula；The website receives acknowledgement frame.
- 4. according to the method for claim 3, it is characterised in that methods described also includes：The website receives the second radio frames, and second radio frames carry the second configured information, and second configured information is used The operator scheme of the website use is indicated in instruction access point, the operator scheme includes MU only patterns, SU only moulds One kind in formula and MU+SU patterns.
- 5. a kind of communicator, applied to WLAN WLAN, it is characterised in that the communicator includes：BBP, for keeping out of the way for the first time, the initial value of backoff counter is V；The BBP, being additionally operable to stop the first time keeps out of the way, and the backoff counter value is V1, V >=V1；The BBP, it is additionally operable to keep out of the way for the second time, the backoff counter value is V1+V2, and V2 is to move back away for the second time The value generated at the time of beginning；Transceiver, for receiving trigger frame；The transceiver, it is additionally operable to carry out uplink according to the trigger frame.
- 6. communicator according to claim 5, it is characterised in that the V1 is that the BBP increases by first The value of strong distributed channel access EDCA parameter set generations, the V2 are that the BBP is given birth to by the 2nd EDCA parameter sets Into value.
- 7. a kind of communicator, applied to WLAN WLAN, it is characterised in that the communicator includes：BBP, for generating the first radio frames, first radio frames carry the first configured information, first instruction Information is used to refer to the operator scheme that the website is supported, the operator scheme includes MU only patterns, SU only patterns And the one or more in MU+SU patterns；Transceiver, for sending the first radio frames；The transceiver, it is additionally operable to receive acknowledgement frame.
- 8. communicator according to claim 7, it is characterised in that the transceiver, it is additionally operable to receive the second radio frames, Second radio frames carry the second configured information, and second configured information is used to indicate that access point indicates that the website uses Operator scheme, the operator scheme includes MU only patterns, one kind in SU only patterns and MU+SU patterns.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415271.2A CN107509251B (en) | 2016-06-14 | 2016-06-14 | Back-off method and device |
| PCT/CN2017/081551 WO2017215350A1 (en) | 2016-06-14 | 2017-04-22 | Backoff method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415271.2A CN107509251B (en) | 2016-06-14 | 2016-06-14 | Back-off method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107509251A true CN107509251A (en) | 2017-12-22 |
| CN107509251B CN107509251B (en) | 2021-04-09 |
Family
ID=60662946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610415271.2A Active CN107509251B (en) | 2016-06-14 | 2016-06-14 | Back-off method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107509251B (en) |
| WO (1) | WO2017215350A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825249A (en) * | 2020-06-18 | 2021-12-21 | 华为技术有限公司 | Channel competition method and related device |
| CN115087044A (en) * | 2019-05-08 | 2022-09-20 | 腾讯科技（深圳）有限公司 | Data transmission method, access category creation method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267377A (en) * | 2008-03-06 | 2008-09-17 | 上海交通大学 | Dynamic adjustment method based on index avoidance |
| US20140050133A1 (en) * | 2012-08-17 | 2014-02-20 | Qualcomm Incorporated | Systems and methods for low power wake up signal and operations for wlan |
| CN104303580A (en) * | 2012-04-28 | 2015-01-21 | Lg电子株式会社 | Method and apparatus for accessing channel in WLAN system |
| CN104871630A (en) * | 2012-12-19 | 2015-08-26 | Lg电子株式会社 | Backoff method and device in slot-type channel access of wireless lan system |
| CN105101435A (en) * | 2015-07-29 | 2015-11-25 | 魅族科技（中国）有限公司 | Data transmission method and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964294A (en) * | 2005-11-10 | 2007-05-16 | 中国科学院半导体研究所 | A two-step recession method to improve DCF performance of wireless LAN |
| CN103096492B (en) * | 2011-11-08 | 2016-09-07 | 华为终端有限公司 | A kind of WAP and the method for terminal communication, system and relevant device |
| EP3188431B1 (en) * | 2014-08-27 | 2022-10-05 | LG Electronics Inc. | Method and device for transmitting data in a wireless communication system |
-
2016
- 2016-06-14 CN CN201610415271.2A patent/CN107509251B/en active Active
-
2017
- 2017-04-22 WO PCT/CN2017/081551 patent/WO2017215350A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267377A (en) * | 2008-03-06 | 2008-09-17 | 上海交通大学 | Dynamic adjustment method based on index avoidance |
| CN104303580A (en) * | 2012-04-28 | 2015-01-21 | Lg电子株式会社 | Method and apparatus for accessing channel in WLAN system |
| US20140050133A1 (en) * | 2012-08-17 | 2014-02-20 | Qualcomm Incorporated | Systems and methods for low power wake up signal and operations for wlan |
| CN104871630A (en) * | 2012-12-19 | 2015-08-26 | Lg电子株式会社 | Backoff method and device in slot-type channel access of wireless lan system |
| CN105101435A (en) * | 2015-07-29 | 2015-11-25 | 魅族科技（中国）有限公司 | Data transmission method and device |
Non-Patent Citations (1)
| Title |
|---|
| INTEL CORPORATION: "Remaining Details on LBT", 《3GPP》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115087044A (en) * | 2019-05-08 | 2022-09-20 | 腾讯科技（深圳）有限公司 | Data transmission method, access category creation method and device |
| CN115087044B (en) * | 2019-05-08 | 2024-06-11 | 腾讯科技（深圳）有限公司 | Data transmission method, access category creation method and device |
| CN113825249A (en) * | 2020-06-18 | 2021-12-21 | 华为技术有限公司 | Channel competition method and related device |
| CN113825249B (en) * | 2020-06-18 | 2024-04-12 | 华为技术有限公司 | Channel competition method and related device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107509251B (en) | 2021-04-09 |
| WO2017215350A1 (en) | 2017-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10206070B2 (en) | Space division multiple access for wireless LAN, and channel estimation for the same | |
| US10499431B2 (en) | Channel access method for very high throughput (VHT) wireless local access network system and station supporting the channel access method | |
| JP2022111242A (en) | Communication apparatus, communication method and integrated circuit | |
| US11930535B2 (en) | Trigger-based random access for wireless device | |
| EP4013179A1 (en) | Wireless communication method using enhanced distributed channel access, and wireless communication terminal using same | |
| US10201012B2 (en) | Retransmission method at time of sharing transmission opportunity in wireless LAN system, and device therefor | |
| US10009922B2 (en) | Channel frame structures for high efficiency wireless LAN (HEW) | |
| US10791545B2 (en) | Method for transmitting frame on basis of multiple channelized channels in wireless LAN system, and wireless terminal using same | |
| US9609678B2 (en) | Method and apparatus for asynchronous Direct Link Setup in WLAN system | |
| US20230156795A1 (en) | Method and apparatus for transmitting and receiving data in communication system supporting multiple links | |
| US20230135332A1 (en) | Method and device for direct communication in wireless lan system | |
| KR20190112194A (en) | Wireless communication method and terminal for multi-user uplink transmission | |
| WO2020221057A1 (en) | Communication method and communication apparatus | |
| CN107509251A (en) | A kind of back-off method and device | |
| JP2018523355A (en) | Efficient random scheduling channel access | |
| CN110719649B (en) | Channel access method and device | |
| WO2021179269A1 (en) | Communication method and apparatus for wireless local area network | |
| CN110198542B (en) | E-LBT channel access method of LTE-U and WiFi coexistence network with conflict avoidance function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |