CN108633022A - Adjust the method and device of TBTT - Google Patents
Adjust the method and device of TBTT Download PDFInfo
- Publication number
- CN108633022A CN108633022A CN201710180251.6A CN201710180251A CN108633022A CN 108633022 A CN108633022 A CN 108633022A CN 201710180251 A CN201710180251 A CN 201710180251A CN 108633022 A CN108633022 A CN 108633022A
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- Prior art keywords
- tbtt
- local terminal
- adjustment
- host node
- adjusted
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
-
- 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 of adjustment TBTT.The method includes：Calculate the TBTT after local terminal is adjusted as host node；TBTT before local terminal is adjusted as host node sends beacon frame, and the beacon frame carries the TBTT information after calculated adjustment；TBTT after being adjusted as host node based on the local terminal calculated, TBTT of the adjustment local terminal as host node., can be before adjustment local terminal to be as the TBTT of GO using said program, notice opposite end is used as GC, and the technical issues of to avoid opposite end as GC and local terminal as GO step-outs, lead to P2P disconnectings, 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 of adjustment TBTT.
Background technology
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 patterns, 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.
For being both the GO of a grouping net, while being that another is grouped for a WiFi equipment of the STA netted again, both
It needs the grouping at one to net corresponding TBTT transmission Beacon to each GC in grouping net, and needs 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
The above-mentioned two moment is not overlapped, and could respectively exclusively enjoy RF resources and be sent or received.Due to the reception Beacon as STA
TBTT can not oneself adjustment, dependent on its access grouping net AP, so a kind of common design scheme be 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 patterns, for a node device, after calculating local terminal first as GO adjustment
TBTT after, be then directly based upon the TBTT after local terminal is adjusted as GO and send Beacon of the local terminal as GO.Opposite end is as GC
TBTT dependent on this transmission Beacon calibrated.At this time if opposite end is in the case where multiple technologies share RF resources
Under, the other technologies that local terminal is very likely adjusted to opposite end as the TBTT of GO used in the working time of RF resources, then right
End can not just receive this crucial Beacon as GC.Subsequent local terminal sends Beacon as GO based on the TBTT after adjustment,
And opposite end receives Beacon as GC based on the TBTT before adjustment, so as to cause local terminal as GO and opposite end as GC step-outs, P2P
Disconnecting.
Invention content
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-outs, the technical issues of leading to P2P disconnectings, ensure 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 of adjustment TBTT, including calculates local terminal and make
TBTT after being adjusted for host node；TBTT before local terminal is adjusted as host node sends beacon frame, and the beacon frame carries institute
TBTT information after the adjustment of calculating；TBTT after being adjusted as host node based on the local terminal calculated, adjustment local terminal is as master
The TBTT of node.
Optionally, the TBTT after the calculating local terminal is adjusted as host node, including：Using with local terminal as the TBTT of website
At the time of differing preset duration, the TBTT after being adjusted as host node as local terminal.
Optionally, the preset duration is half sending cycle of the local terminal as the beacon frame of host node.
Optionally, the beacon frame carries the TBTT information after calculated adjustment, including：By in the beacon frame
Time synchronization axis carries the TBTT information after calculated adjustment.
Optionally, the TBTT before local terminal is adjusted as host node sends beacon frame, including：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 provides a kind of method of adjustment TBTT, including：Using local terminal as
The TBTT of host node adds a preset adjusting step, the TBTT after being adjusted as host node as local terminal；Based on the sheet calculated
Hold the TBTT after being adjusted as host node, TBTT of the adjustment 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 provide it is a kind of adjustment TBTT device, described device, including：
First computing unit is suitable for calculating the TBTT after local terminal is adjusted as host node；First transmission unit is suitable in local terminal as master
TBTT before node adjustment sends beacon frame, and the beacon frame carries the TBTT information after calculated adjustment；The first adjustment list
Member, suitable for the TBTT after being adjusted as host node based on the local terminal calculated, TBTT of the adjustment local terminal as host node.
Optionally, first computing unit, at the time of being suitable for preset duration is differed as the TBTT of website with local terminal,
TBTT after being adjusted as host node as local terminal.
Optionally, the preset duration is half sending cycle of the local terminal as the beacon frame of host node.
Optionally, first transmission unit, suitable for what is calculated by the time synchronization axis carrying in the beacon frame
TBTT information after adjustment.
Optionally, it is default to be suitable for the TBTT repetition transmissions before local terminal is adjusted as host node for first transmission unit
The beacon frame of number.
In order to solve the above technical problems, the embodiment of the present invention provide it is a kind of adjustment TBTT device, described device, including：
Second computing unit, suitable for adding a preset adjusting step using local terminal as the TBTT of host node, as local terminal as host node
TBTT after adjustment；Second adjustment unit adjusts local terminal suitable for the TBTT after being adjusted as host node based on the local terminal calculated
TBTT as host node.
Optionally, the device of the adjustment TBTT further includes：Control unit, be suitable for controlling second computing unit and
The second adjustment unit repeats, until the local terminal TBTT 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：
The TBTT after local terminal is adjusted as GO is calculated, and the TBTT before local terminal is adjusted as GO sends information and notifies opposite end
As GC, TBTT of the local terminal as GO is then adjusted.Using said program, can before adjustment local terminal is as the TBTT of GO,
Opposite end is notified to be used as GC, the technical issues of to avoid opposite end as GC and local terminal as GO step-outs, lead to P2P disconnectings,
Ensure that local terminal is synchronous as GC with opposite end as GO.
Half of 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, the TBTT after being adjusted as GO as local terminal.Using said program, there can be sufficient time coordination local terminal to make
Obtains near respective transmission time as STA the control to RF for GO and local terminal, to ensure local terminal as GO and
End can be worked normally as STA.
TBTT letters after the adjustment that the carrying of the TBTT repetition transmission preset times before local terminal is adjusted as GO is calculated
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-outs, the technical issues of leading to P2P disconnectings.
It is decomposed into preset small step-length adjustment using local terminal as the adjustment of the TBTT of GO, can farthest be ensured every time
Local terminal after adjustment is located at opposite end as in the RF work slices of GC as the TBTT of GO, and guarantee opposite end is received as GC
Beacon, can not be synchronous as GO holdings with local terminal because Beacon is lost as GC to substantially reduce opposite end, leads to P2P
The technical issues of disconnecting.
Description of the drawings
Fig. 1 is a kind of flow chart of the method for adjustment TBTT provided in an embodiment of the present invention；
Fig. 2 is a kind of network connection figure 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 the device of adjustment TBTT provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of the method for adjustment TBTT provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of the device of adjustment TBTT provided in an embodiment of the present invention.
Specific implementation mode
In the WiFi network of current P2P patterns, for a node device, after calculating local terminal first as GO adjustment
After TBTT, then it is directly based upon the TBTT after calculated adjustment and sends Beacon of the local terminal as GO.The realization is very possible
Other wireless access ways that local terminal is adjusted to opposite end as the TBTT of GO are caused to use in the working time of RF resources, then right
End can not just receive this crucial Beacon as GC.Subsequent local terminal sends Beacon as GO based on the TBTT after adjustment,
And opposite end receives Beacon as GC based on the TBTT before adjustment, so as to cause local terminal as GO and opposite end as GC step-outs, P2P
Disconnecting.
To solve the above problems, the embodiment of the present invention is used as the TBTT after GO is adjusted by calculating local terminal, and make in local terminal
TBTT before being adjusted for GO sends information and notifies opposite end as GC, then adjusts TBTT of the local terminal as GO.Using said program,
Can be before adjustment local terminal to be as the TBTT of GO, notice opposite end ensures that local terminal is synchronous as GC with opposite end as GO as GC.
It is understandable to enable above-mentioned purpose, feature and the advantageous effect of the present invention to become apparent, below in conjunction with the accompanying drawings to this
The specific embodiment of invention is described in detail.
Referring to Fig. 1, an embodiment of the present invention provides a kind of methods of adjustment TBTT, in a particular embodiment, the adjustment
Method may include steps of：
S101 calculates the TBTT after local terminal is adjusted as host node.
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
TBTT after being adjusted for host node.Wherein, the set preset duration is more than 0, and is less than letter of the local terminal as host node
The sending cycle for marking frame, 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 said program, 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 ensure that local terminal can normal work as website as host node and local terminal
Make.In particular for local terminal as website and other wireless access ways, such as bluetooth are existed simultaneously as host node, local terminal
(BlueTooth, BT), for the system for sharing RF resources together, said program 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 operations timeslice of other access ways, to most
Bigization ground ensures that each technology exclusively enjoys the time of RF resources.
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 nets
Network is connected with A as host node.C is used as website with A as AP, by the second WiFi network and is connected.D is made by BT networks and A
It is connected for BT nodes.In communication process, if A is overlapped as host node and A as the TBTT of website, the first WiFi can be caused
Network or the second WiFi network disconnecting.WiFi network disconnecting certainly will need to occupy additional RF work slices
Connection is re-established, RF work slices of the A as BT nodes will be influenced.
At this point, setting A differs half hairs of the A as the beacon frame of host node as host node and A as the TBTT of website
Send the period, it is ensured that A can be worked normally as host node and A as website, and then ensure that A works as the RF of BT nodes
Timeslice is unaffected.
S102, the TBTT before local terminal is adjusted as host node send beacon frame, and the beacon frame carries calculated tune
TBTT information after whole.
In specific implementation, the time synchronization axis (Time in the beacon can be passed through
SynchronizationFunction, TSF) carry the TBTT information after calculated adjustment.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 in the TBTT before local terminal is adjusted as host node
Mark frame.Since local terminal can not confirm whether opposite end has received the TBTT information carried after adjusting as from node as host node
The beacon frame, can farthest ensure that opposite end is used as from node by repeatedly sending and receive the beacon frame, from
And it is synchronous from node farthest to ensure that local terminal is used as host node and opposite end.
S103, the TBTT after being adjusted as host node based on the local terminal calculated, TBTT of the adjustment local terminal as host node.
Using said program, 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 being used as host node step-out, lead to P2P disconnectings, ensure local terminal work
For host node with opposite end as synchronous from node.
To make those skilled in the art more fully understand and realizing the present invention, being additionally provided in the embodiment of the present invention can be real
Device in existing above-described embodiment corresponding to the method for adjustment TBTT, is described in detail referring to the drawings.
Referring to Fig. 3, an embodiment of the present invention provides a kind of devices 30 of adjustment TBTT, including：First computing unit 31, the
One transmission unit 32 and the first adjustment unit 33, wherein：
First computing unit 31 is suitable for calculating the TBTT after local terminal is adjusted as host node.
First transmission unit 32 is suitable for the TBTT before local terminal is adjusted as host node and sends beacon frame, the letter
It marks frame and carries the TBTT information after calculated adjustment.
The first adjustment unit 33, suitable for the TBTT after being adjusted as host node based on the local terminal calculated, adjustment is originally
Hold the TBTT as host node.
In specific implementation, first computing unit 31, when can will differ default as the TBTT of website with local terminal
At the time of long, the TBTT after being adjusted as host node as local terminal.
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 calculated tune by the TSF in the beacon
TBTT information after whole.
In specific implementation, first transmission unit 32 can be repeated in the TBTT before local terminal is adjusted as host node
Send the beacon frame of preset times.
Using said program, 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 being used as host node step-out, lead to P2P disconnectings, ensure 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, an embodiment of the present 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, is adjusted as host node as local terminal
TBTT afterwards.
In specific implementation, the preset adjusting step could be provided as the step-length of very little, ensure after adjusting every time
Local terminal be located at opposite end as out of, node RF work slices as the TBTT of host node, to farthest ensure pair
End receives the beacon frame that local terminal is sent as host node as from node, to farthest ensure local terminal as host node
It is used as with opposite end synchronous from node.
S402, the TBTT after being adjusted as host node based on the local terminal calculated, TBTT of the adjustment local terminal as host node.
In specific implementation, the method that the adjustment TBTT 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 more than 0, and less than this
The sending cycle for holding the beacon frame as host node, 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 said program, the TBTT to local terminal as host node carries out small step-length adjustment, can farthest ensure
The local terminal after adjustment is located at opposite end as out of, node RF work slices as the TBTT of host node every time, ensures 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 disconnectings.
To make those skilled in the art more fully understand and realizing the present invention, being additionally provided in the embodiment of the present invention can be real
Device in existing above-described embodiment corresponding to the method for adjustment TBTT, is described in detail referring to the drawings.
Referring to Fig. 5, an embodiment of the present invention provides a kind of devices 50 of adjustment TBTT, including：Second computing unit 51, the
Two adjustment units 52 and control unit 53, wherein：
Second computing unit 51, suitable for adding a preset adjusting step using local terminal as the TBTT of host node, as
Local terminal is as the TBTT after host node adjustment.
The second adjustment unit 52, suitable for the TBTT after being adjusted as host node based on the local terminal calculated, 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 the local terminal TBTT as host node, the TBTT with local terminal as website, differ default step-length.
In specific implementation, the preset duration can be half sending cycle of the local terminal as the beacon frame of host node.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in computer readable storage medium, to store
Medium may include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Any those 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 of adjustment TBTT, which is characterized in that including：
Calculate the TBTT after local terminal is adjusted as host node；
TBTT before local terminal is adjusted as host node sends beacon frame, and the beacon frame carries the TBTT after calculated adjustment
Information；
TBTT after being adjusted as host node based on the local terminal calculated, TBTT of the adjustment local terminal as host node.
2. the method for adjustment TBTT according to claim 1, which is characterized in that the calculating local terminal is adjusted as host node
TBTT afterwards, including：
At the time of using preset duration is differed as the TBTT of website with local terminal, the TBTT after being adjusted as host node as local terminal.
3. the method for adjustment TBTT according to claim 2, which is characterized in that the preset duration is local terminal as main section
Half of sending cycle of the beacon frame of point.
4. the method for adjustment TBTT according to claim 1, which is characterized in that the beacon frame carries calculated adjustment
TBTT information afterwards, including：
The TBTT information after calculated adjustment is carried by the time synchronization axis in the beacon frame.
5. the method for adjustment TBTT according to claim 1, which is characterized in that described before local terminal is adjusted as host node
TBTT send beacon frame, including：
TBTT before local terminal is adjusted as host node repeats to send the beacon frame of preset times.
6. a kind of device of adjustment TBTT, which is characterized in that including：
First computing unit is suitable for calculating the TBTT after local terminal is adjusted as host node；
First transmission unit is suitable for the TBTT before local terminal is adjusted as host node and sends beacon frame, and the beacon frame carries institute
TBTT information after the adjustment of calculating；
The first adjustment unit, suitable for the TBTT after being adjusted as host node based on the local terminal calculated, adjustment local terminal is as main section
The TBTT of point.
7. the device of adjustment TBTT according to claim 6, which is characterized in that first computing unit, being suitable for will be with
At the time of local terminal differs preset duration as the TBTT of website, the TBTT after being adjusted as host node as local terminal.
8. the device of adjustment TBTT according to claim 7, which is characterized in that the preset duration is local terminal as main section
Half of sending cycle of the beacon frame of point.
9. the device of adjustment TBTT according to claim 6, which is characterized in that first transmission unit, suitable for passing through
Time synchronization axis in the beacon frame carries the TBTT information after calculated adjustment.
10. the device of adjustment TBTT according to claim 6, which is characterized in that first transmission unit is suitable at this
The TBTT before being adjusted as host node is held to repeat to send the beacon frame of preset times.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 CN108633022A (en) | 2017-03-23 | 2017-03-23 | Adjust the method and device of TBTT |
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| CN201910787644.2A Division CN110519851A (en) | 2017-03-23 | 2017-03-23 | Adjust the method and device of TBTT |
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| CN1856963A (en) * | 2003-10-24 | 2006-11-01 | 索尼株式会社 | Radio communication system, radio communication apparatus, radio communication method, and computer program |
| 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 |
| US20140119277A1 (en) * | 2012-10-26 | 2014-05-01 | Cambridge Silicon Radio Limited | Wireless device |
| WO2014158960A1 (en) * | 2013-03-14 | 2014-10-02 | 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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| US7388857B2 (en) * | 2004-04-12 | 2008-06-17 | Samsung Electronics Co., Ltd. | Method and system for synchronizing two end terminals using beacon synchronization with multiple channels in a wireless local area network |
| CN101312550B (en) * | 2007-05-22 | 2016-05-25 | 株式会社Ntt都科摩 | In hybrid network, realize the method and apparatus of load equalization |
| CN102546484B (en) * | 2010-12-17 | 2014-09-10 | 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 |
| CN104853375B (en) * | 2015-05-14 | 2018-03-09 | 江苏中兴微通信息科技有限公司 | The sending method of beacon frame collision is avoided in a kind of enhanced wireless LAN |
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- 2017-03-23 CN CN201710180251.6A patent/CN108633022A/en active Pending
- 2017-03-23 CN CN201910787644.2A patent/CN110519851A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1856963A (en) * | 2003-10-24 | 2006-11-01 | 索尼株式会社 | Radio communication system, radio communication apparatus, radio communication method, and computer program |
| 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 |
| US20140119277A1 (en) * | 2012-10-26 | 2014-05-01 | Cambridge Silicon Radio Limited | Wireless device |
| WO2014158960A1 (en) * | 2013-03-14 | 2014-10-02 | 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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| CN110519851A (en) | 2019-11-29 |
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