CN110519851A - Adjust the method and device of TBTT - Google Patents
Adjust the method and device of TBTT Download PDFInfo
- Publication number
- CN110519851A CN110519851A CN201910787644.2A CN201910787644A CN110519851A CN 110519851 A CN110519851 A CN 110519851A CN 201910787644 A CN201910787644 A CN 201910787644A CN 110519851 A CN110519851 A CN 110519851A
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- tbtt
- local terminal
- host node
- adjustment
- adjusted
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000001360 synchronised effect Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006854 communication Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
Abstract
A kind of method and device adjusting TBTT.The described method includes: calculating local terminal as host node TBTT adjusted；Beacon frame is sent as the TBTT before host node adjustment in local terminal, the beacon frame carries TBTT information adjusted calculated；Based on local terminal calculated as host node TBTT adjusted, TBTT of the local terminal as host node is adjusted.Using above scheme, opposite end can be notified as GC before adjustment local terminal is as the TBTT of GO, thus the technical issues of avoiding opposite end as GC and local terminal as GO step-out, leading to P2P disconnecting, guarantee local terminal is synchronous as GC with opposite end as GO.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of method and devices for adjusting TBTT.
Background technique
End-to-end (Peer to Peer, P2P) is a kind of common network mode, and multiple P2P equipment form a grouping
Network is communicated.In the WiFi network of P2P mode, each WiFi equipment can be both the host node of some grouping net
(Group Owner, GO), and be the website (Station, STA) of another grouping net.GO plays the part of the role of similar router,
It is communicated from node (Group Clinet, GC) by receiving the signal that GO is sent.STA is by receiving access point (Access
Point, AP) send signal communicated.Wherein GO and AP is in target beacon frame transmission time (Target Beacon
Transmission Time, TBTT) send beacon frame (Beacon) be a key message.
It for being both the GO of a grouping net, while being that another is grouped for a WiFi equipment of the STA of net again, both
It needs to net corresponding TBTT in a grouping and sends Beacon to each GC in grouping net, and need to receive another grouping net
The Beacon that middle AP is sent in TBTT.Since resource is shared to radio frequency (Radio Frequency, RF), so must assure that
Above-mentioned two moment is not overlapped, and could respectively exclusively enjoy RF resource and be sent or received.Due to the reception Beacon as STA
TBTT can not oneself adjustment, the AP of the grouping net dependent on its access, so a kind of common design scheme is adjustment conduct
The TBTT for the Beacon that GO is sent, so that the TBTT as GO differs maximum with the TBTT as STA.
In the WiFi network of current P2P mode, for a node device, after calculating local terminal first as GO adjustment
TBTT after, be then directly based upon local terminal as GO TBTT adjusted and send Beacon of the local terminal as GO.Opposite end is as GC
TBTT dependent on this send Beacon calibrated.At this time if opposite end is in the case where multiple technologies share RF resource
Under, local terminal uses in the working time of RF resource as the TBTT of the GO other technologies for being very likely adjusted to opposite end, then right
End can not just receive this crucial Beacon as GC.Subsequent local terminal is based on TBTT adjusted as GO and sends Beacon,
And opposite end receives Beacon based on the TBTT before adjustment as GC, so as to cause local terminal as GO and opposite end as GC step-out, P2P
Disconnecting.
Summary of the invention
What the embodiment of the present invention solved be when needing to adjust TBTT of the local terminal as GO, how to avoid opposite end as GC and
Local terminal is as GO step-out, the technical issues of leading to P2P disconnecting, guarantee local terminal as GO with opposite end as the synchronous of GC.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of method for adjusting TBTT, including calculates local terminal and make
For host node TBTT adjusted；Beacon frame is sent as the TBTT before host node adjustment in local terminal, the beacon frame carries institute
The TBTT information adjusted calculated；Based on local terminal calculated as host node TBTT adjusted, local terminal is adjusted as master
The TBTT of node.
Optionally, the calculating local terminal is as host node TBTT adjusted, comprising: using with local terminal as the TBTT of website
At the time of differing preset duration, as local terminal as host node TBTT adjusted.
Optionally, the preset duration is half sending cycle of the local terminal as the beacon frame of host node.
Optionally, the beacon frame carries TBTT information adjusted calculated, comprising: by the beacon frame
Time synchronization axis carries TBTT information adjusted calculated.
Optionally, described to send beacon frame as the TBTT before host node adjustment in local terminal, comprising: in local terminal as main section
TBTT before point adjustment repeats to send the beacon frame of preset times.
In order to solve the above technical problems, the embodiment of the present invention provide it is a kind of adjust TBTT method, comprising: using local terminal as
The TBTT of host node adds a preset adjusting step, as local terminal as host node TBTT adjusted；Based on calculated
End is used as host node TBTT adjusted, adjusts TBTT of the local terminal as host node.
Optionally, the method for repeating the adjustment TBTT, until TBTT of the local terminal as host node, makees with local terminal
For the TBTT of website, preset duration is differed.
Optionally, the preset duration is half sending cycle of the local terminal as the beacon frame of host node.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of device for adjusting TBTT, described device, comprising:
First computing unit is suitable for calculating local terminal as host node TBTT adjusted；First transmission unit is suitable in local terminal as master
TBTT before node adjustment sends beacon frame, and the beacon frame carries TBTT information adjusted calculated；The first adjustment list
Member is suitable for adjusting TBTT of the local terminal as host node as host node TBTT adjusted based on local terminal calculated.
Optionally, first computing unit, at the time of suitable for using preset duration is differed as the TBTT of website with local terminal,
As local terminal as host node TBTT adjusted.
Optionally, the preset duration is half sending cycle of the local terminal as the beacon frame of host node.
Optionally, first transmission unit, it is calculated suitable for being carried by the time synchronization axis in the beacon frame
TBTT information adjusted.
Optionally, first transmission unit is preset suitable for repeating to send as the TBTT before host node adjustment in local terminal
The beacon frame of number.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of device for adjusting TBTT, described device, comprising:
Second computing unit, suitable for adding a preset adjusting step for local terminal as the TBTT of host node, as local terminal as host node
TBTT adjusted；Second adjustment unit is suitable for adjusting local terminal as host node TBTT adjusted based on local terminal calculated
TBTT as host node.
Optionally, the device of the described adjustment TBTT further include: control unit, be suitable for controlling second computing unit and
The second adjustment unit repeats, until TBTT of the local terminal as host node, the TBTT with local terminal as website, difference is pre-
If duration.
Optionally, the preset duration is half sending cycle of the local terminal as the beacon frame of host node.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantages that
Local terminal is calculated as GO TBTT adjusted, and sends information as the TBTT before GO adjustment in local terminal and notifies opposite end
As GC, TBTT of the local terminal as GO is then adjusted.Using above scheme, can before adjustment local terminal is as the TBTT of GO,
Notify opposite end as GC, thus the technical issues of avoiding opposite end as GC and local terminal as GO step-out, leading to P2P disconnecting,
Guarantee that local terminal is synchronous as GC with opposite end as GO.
Half of the transmission that local terminal will be differed as the Beacon of GO as the TBTT of STA with the local terminal for belonging to an equipment
At the time of period, as local terminal as GO TBTT adjusted.Using above scheme, there can be sufficient time coordination local terminal to make
Obtains as STA the control to RF near respective transmission time for GO and local terminal, thus guarantee local terminal as GO with
End can be worked normally as STA.
Believe in local terminal as the carrying TBTT adjusted calculated for repeating to send preset times of the TBTT before GO adjustment
The Beacon of breath increases the probability that opposite end is properly received Beacon as GC, farthest avoids opposite end as GC and local terminal
As GO step-out, the technical issues of leading to P2P disconnecting.
It is decomposed into preset small step-length adjustment using local terminal as the adjustment of the TBTT of GO, can farthest be guaranteed every time
Local terminal after adjustment is located at opposite end as in the RF work slice of GC as the TBTT of GO, and guarantee opposite end is received as GC
Beacon, can not be synchronous as GO holding with local terminal because Beacon is lost as GC to substantially reduce opposite end, leads to P2P
The technical issues of disconnecting.
Detailed description of the invention
Fig. 1 is a kind of flow chart of method for adjusting TBTT provided in an embodiment of the present invention；
Fig. 2 is a kind of network connection diagram of device node for supporting plurality of access modes provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of device for adjusting TBTT provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of method for adjusting TBTT provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of device for adjusting TBTT provided in an embodiment of the present invention.
Specific embodiment
In the WiFi network of current P2P mode, for a node device, calculating local terminal first is adjusted as GO
After TBTT, then it is directly based upon TBTT adjusted calculated and sends Beacon of the local terminal as GO.The realization is very possible
Other wireless access ways for causing local terminal to be adjusted to opposite end as the TBTT of GO used in the working time of RF resource, then right
End can not just receive this crucial Beacon as GC.Subsequent local terminal is based on TBTT adjusted as GO and sends Beacon,
And opposite end receives Beacon based on the TBTT before adjustment as GC, so as to cause local terminal as GO and opposite end as GC step-out, P2P
Disconnecting.
To solve the above problems, the embodiment of the present invention is made by calculating local terminal as GO TBTT adjusted, and in local terminal
Sending information for the TBTT before GO adjustment notifies opposite end as GC, then adjusts TBTT of the local terminal as GO.Using above scheme,
Can be before adjustment local terminal to be as the TBTT of GO, notice opposite end guarantees that local terminal is synchronous as GC with opposite end as GO as GC.
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent, with reference to the accompanying drawing to this
The specific embodiment of invention is described in detail.
Referring to Fig. 1, the embodiment of the invention provides a kind of methods for adjusting TBTT, in a particular embodiment, the adjustment
Method may include steps of:
S101 calculates local terminal as host node TBTT adjusted.
In specific implementation, at the time of can be using preset duration is differed as the TBTT of website with local terminal, make as local terminal
For host node TBTT adjusted.Wherein, the set preset duration is greater than 0, and is less than letter of the local terminal as host node
The sending cycle of frame is marked, so as to be staggered local terminal as host node and local terminal as the TBTT of website.
In an embodiment of the present invention, the set preset duration is half of beacon frame of local terminal as host node
Sending cycle.
Using above scheme, can have sufficient time coordination local terminal as host node with local terminal as website respective
Transmission time nearby obtains the control to RF, to guarantee that local terminal can normal work as website as host node and local terminal
Make.As website and other wireless access ways, such as bluetooth are existed simultaneously as host node, local terminal in particular for local terminal
(BlueTooth, BT), together share RF resource system for, above scheme can to avoid due to local terminal as host node with
The TBTT of website is overlapped, and is caused RF to conflict and then is tied up the corresponding RF resource operation timeslice of other access ways, thus most
Bigization ground guarantees that each technology exclusively enjoys the time of RF resource.
As shown in Fig. 2, A is a device node for supporting plurality of access modes.B is used as from node, passes through the first WiFi net
Network is connected with A as host node.C is connected with A as website as AP, by the second WiFi network.D is made by BT network and A
It is connected for BT node.In communication process, if A is overlapped as host node and A as the TBTT of website, the first WiFi will lead to
Network or the second WiFi network disconnecting.WiFi network disconnecting certainly will need to occupy additional RF work slice
Connection is re-established, just will affect RF work slice of the A as BT node.
At this point, setting A differs half hair of the A as the beacon frame of host node as the TBTT of website as host node and A
Send the period, it is ensured that A can be worked normally as host node and A as website, and then guarantee that A works as the RF of BT node
Timeslice is unaffected.
S102 sends beacon frame as the TBTT before host node adjustment in local terminal, and the beacon frame carries tune calculated
TBTT information after whole.
In specific implementation, the time synchronization axis (Time in the beacon can be passed through
SynchronizationFunction, TSF) carry TBTT information adjusted calculated.Opposite end is used as from node by connecing
The TSF information in the beacon frame is received, at the time of adjustment receives target beacon frame, to avoid adjustment local terminal as host node
TBTT, and opposite end is as the problem of can not receiving the beacon frame from node.
In specific implementation, the letter of transmission preset times can be repeated as the TBTT before host node adjustment in local terminal
Mark frame.TBTT information adjusted is carried since local terminal can not confirm opposite end to be used as from whether node has received as host node
The beacon frame, can farthest guarantee that opposite end is used as by repeatedly sending and from node receive the beacon frame, from
And it is synchronous from node farthest to guarantee that local terminal is used as host node and opposite end.
S103 adjusts TBTT of the local terminal as host node based on local terminal calculated as host node TBTT adjusted.
Using above scheme, can before adjustment local terminal is as the TBTT of host node, notice opposite end as from node, from
And the technical issues of avoiding opposite end from being used as from node and local terminal as host node step-out, leading to P2P disconnecting, guarantee local terminal work
For host node with opposite end as synchronous from node.
To more fully understand those skilled in the art and realizing the present invention, additionally providing in the embodiment of the present invention can be real
Device corresponding to the method for TBTT is adjusted in existing above-described embodiment, is described in detail referring to the drawings.
Referring to Fig. 3, the embodiment of the invention provides a kind of devices 30 for adjusting TBTT, include: the first computing unit 31, the
One transmission unit 32 and the first adjustment unit 33, in which:
First computing unit 31 is suitable for calculating local terminal as host node TBTT adjusted.
First transmission unit 32, suitable for sending beacon frame, the letter as the TBTT before host node adjustment in local terminal
It marks frame and carries TBTT information adjusted calculated.
The first adjustment unit 33 is suitable for based on local terminal calculated as host node TBTT adjusted, and adjustment is originally
Hold the TBTT as host node.
In specific implementation, first computing unit 31, when can will differ default with local terminal as the TBTT of website
At the time of long, as local terminal as host node TBTT adjusted.
In specific implementation, the preset duration can be half sending cycle of the local terminal as the beacon frame of host node.
In specific implementation, first transmission unit 32 can carry tune calculated by the TSF in the beacon
TBTT information after whole.
In specific implementation, first transmission unit 32 can be repeated in local terminal as the TBTT before host node adjustment
Send the beacon frame of preset times.
Using above scheme, can before adjustment local terminal is as the TBTT of host node, notice opposite end as from node, from
And the technical issues of avoiding opposite end from being used as from node and local terminal as host node step-out, leading to P2P disconnecting, guarantee local terminal work
For host node with opposite end as synchronous from node.
In specific implementation, in order to avoid opposite end is used as from node and local terminal as host node step-out, it can also be used
His solution.
Referring to fig. 4, the embodiment of the invention provides the methods of another adjustment TBTT, in a particular embodiment, the tune
Adjusting method may include steps of:
Local terminal is added a preset adjusting step by S401, adjusts as local terminal as host node
TBTT afterwards.
In specific implementation, the preset adjusting step can be set to the step-length of very little, guarantee after adjusting every time
Local terminal be located at opposite end as out of, node RF work slice as the TBTT of host node, to farthest guarantee pair
End receives the beacon frame that local terminal is sent as host node as from node, to farthest guarantee local terminal as host node
It is used as with opposite end synchronous from node.
S402 adjusts TBTT of the local terminal as host node based on local terminal calculated as host node TBTT adjusted.
In specific implementation, the method that TBTT is adjusted described in Fig. 4 can be repeated, until local terminal is as host node
TBTT and TBTT of the local terminal as website differs preset duration.Wherein, the set preset duration is greater than 0, and is less than this
The sending cycle of the beacon frame as host node is held, so as to wrong as the TBTT of website using local terminal as host node and local terminal
It opens.
In an embodiment of the present invention, the preset duration is half transmission week of the local terminal as the beacon frame of host node
Phase.
Using above scheme, the TBTT to local terminal as host node carries out small step-length adjustment, can farthest guarantee
The local terminal after adjustment is located at opposite end as out of, node RF work slice as the TBTT of host node every time, guarantees opposite end
The beacon frame that local terminal is sent as host node is received as from node, is used as from node to substantially reduce opposite end because losing
Target beacon frame and can not be synchronous with the holding of local terminal host node, the technical issues of leading to P2P disconnecting.
To more fully understand those skilled in the art and realizing the present invention, additionally providing in the embodiment of the present invention can be real
Device corresponding to the method for TBTT is adjusted in existing above-described embodiment, is described in detail referring to the drawings.
Referring to Fig. 5, the embodiment of the invention provides a kind of devices 50 for adjusting TBTT, include: the second computing unit 51, the
Two adjustment units 52 and control unit 53, in which:
Second computing unit 51, suitable for adding a preset adjusting step for local terminal as the TBTT of host node, as
Local terminal is as host node TBTT adjusted.
The second adjustment unit 52 is suitable for based on local terminal calculated as host node TBTT adjusted, and adjustment is originally
Hold the TBTT as host node.
Described control unit 53 repeats to hold suitable for controlling second computing unit 51 and the second adjustment unit 52
Row, until TBTT of the local terminal as host node, the TBTT with local terminal as website, differ preset step-length.
In specific implementation, the preset duration can be half sending cycle of the local terminal as the beacon frame of host node.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of method for adjusting TBTT characterized by comprising
Step 1, add a preset adjusting step for local terminal as the TBTT of host node, it is adjusted as host node as local terminal
TBTT；
Step 2, TBTT of the local terminal as host node is adjusted as host node TBTT adjusted based on local terminal calculated.
2. the method for adjustment TBTT according to claim 1, which is characterized in that in TBTT of the adjustment local terminal as host node
Later, further includes:
Repeating said steps 1 and the step 2, until local terminal is differed as TBTT of the TBTT with local terminal as website of host node
Preset duration.
3. the method for adjustment TBTT according to claim 2, which is characterized in that the preset duration is greater than 0 and is less than this
Hold the sending cycle of the beacon frame as host node.
4. the method for adjustment TBTT according to claim 3, which is characterized in that the preset duration is local terminal as main section
Half of sending cycle of the beacon frame of point.
5. the method for adjustment TBTT according to claim 1, which is characterized in that the adjusting step meets following condition:
Local terminal is located at opposite end as out of, node RF working time section as host node TBTT adjusted.
6. a kind of device for adjusting TBTT characterized by comprising
Second computing unit, suitable for adding a preset adjusting step for local terminal as the TBTT of host node, as local terminal as master
Node TBTT adjusted；
Second adjustment unit is suitable for adjusting local terminal as main section as host node TBTT adjusted based on local terminal calculated
The TBTT of point.
7. the device of adjustment TBTT according to claim 6, which is characterized in that further include: control unit is suitable for control institute
It states the second computing unit and the second adjustment unit repeats, stand until local terminal is used as the TBTT and local terminal of host node
The TBTT of point differs preset duration.
8. the device of adjustment TBTT according to claim 7, which is characterized in that the preset duration is greater than 0 and is less than this
Hold the sending cycle of the beacon frame as host node.
9. the device of adjustment TBTT according to claim 8, which is characterized in that the preset duration is local terminal as main section
Half of sending cycle of the beacon frame of point.
10. the device of adjustment TBTT according to claim 6, which is characterized in that the adjusting step meets following condition:
Local terminal is located at opposite end as out of, node RF working time section as host node TBTT adjusted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787644.2A CN110519851A (en) | 2017-03-23 | 2017-03-23 | Adjust the method and device of TBTT |
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|---|---|---|---|
| CN201910787644.2A CN110519851A (en) | 2017-03-23 | 2017-03-23 | Adjust the method and device of TBTT |
| CN201710180251.6A CN108633022A (en) | 2017-03-23 | 2017-03-23 | Adjust the method and device of TBTT |
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| CN201710180251.6A Division CN108633022A (en) | 2017-03-23 | 2017-03-23 | Adjust the method and device of TBTT |
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| CN201710180251.6A Pending CN108633022A (en) | 2017-03-23 | 2017-03-23 | Adjust the method and device of TBTT |
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| CN1747375A (en) * | 2004-04-12 | 2006-03-15 | 三星电子株式会社 | In wireless communication system, make the method and system of two terminal synchronizes |
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| CN102958080A (en) * | 2011-08-17 | 2013-03-06 | 联发科技股份有限公司 | Concurrent control method for a communication device embedded with wi-fi direct |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018171B (en) * | 2003-10-24 | 2011-03-23 | 索尼株式会社 | Radio communication system, radio communication apparatus, radio communication method, and program |
| US20140119277A1 (en) * | 2012-10-26 | 2014-05-01 | Cambridge Silicon Radio Limited | Wireless device |
| US20140269633A1 (en) * | 2013-03-14 | 2014-09-18 | Qualcomm Incorporated | Coexistence of a wireless wide area network device in time division duplex (tdd) mode with a wireless access point (ap) |
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- 2017-03-23 CN CN201910787644.2A patent/CN110519851A/en active Pending
- 2017-03-23 CN CN201710180251.6A patent/CN108633022A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747375A (en) * | 2004-04-12 | 2006-03-15 | 三星电子株式会社 | In wireless communication system, make the method and system of two terminal synchronizes |
| JP2008295045A (en) * | 2007-05-22 | 2008-12-04 | Ntt Docomo Inc | Method and apparatus for realizing loading balance in wireless network |
| CN102546484A (en) * | 2010-12-17 | 2012-07-04 | 上海明波通信技术有限公司 | Signal channel training method and signal channel training receiver device based on beacon frame |
| CN102958080A (en) * | 2011-08-17 | 2013-03-06 | 联发科技股份有限公司 | Concurrent control method for a communication device embedded with wi-fi direct |
| CN104853375A (en) * | 2015-05-14 | 2015-08-19 | 江苏中兴微通信息科技有限公司 | Sending method for avoiding beacon frame collision in enhanced wireless local area network |
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| CN108633022A (en) | 2018-10-09 |
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Application publication date: 20191129 |