WO2014005461A1 - Virtual access point - Google Patents
Virtual access point Download PDFInfo
- Publication number
- WO2014005461A1 WO2014005461A1 PCT/CN2013/074682 CN2013074682W WO2014005461A1 WO 2014005461 A1 WO2014005461 A1 WO 2014005461A1 CN 2013074682 W CN2013074682 W CN 2013074682W WO 2014005461 A1 WO2014005461 A1 WO 2014005461A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- quiet
- interval
- sta
- beacon
- virtual
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
Definitions
- a communication network may be deployed wirelessly as a Wireless Local Area Network (WLAN) by allowing one or more stations (STAs) to access the communication network via an Access Point (AP) .
- STA stations
- AP Access Point
- An STA may include any
- Virtual Access Point technology allows a plurality of logical APs ( irtual access points') to be configured on a single physical AP .
- Figure 1 is a flow diagram of an example of a method for use in a wireless communication system
- FIG. 2 is a schematic diagram showing an example of the quiet periods of an STA over several beacon
- Figure 3 is a schematic diagram showing an example of the quiet periods of n STAs over one beacon interval; and [0007]
- Figure 4 is a schematic diagram of an example of a device for performing the method of Figure 1.
- the present disclosure provides examples of a method, and a device configured to carry out the method, for use in a wireless communication system that comprises an Access Point AP and a plurality of stations STAs.
- each of the plurality of STAs is provided with its own virtual AP .
- a beacon frame is sent to each STA of the plurality via a respective virtual AP .
- Each beacon frame of a corresponding STA includes quiet information of the STA, which specifies a quiet period at which the STA does not access the AP via the respective virtual AP .
- each of a plurality of STAs associated with an AP is able to detect the presence of the AP, an individual STA, for instance STA1, may not be aware of the presence of one or more other STAs associated with the AP .
- a hidden node problem occurs in which one or more other STAs may be hidden from STA1 due to distance, obstacles or other reasons.
- uplink traffic from STA1 may be affected if STA1 attempts to access the AP while another STA that is hidden from STA1 is also
- the communication network is assumed to be a WLAN, which comprises an AP providing access to the network to two or more STAs.
- a fit AP provides wireless encryption while the management and policy functions are performed by the Access Controller AC that connects to the fit AP through tunnels.
- a fit AP may perform functions such as VLAN tagging based on the Service Set Identifier (SSID) that an STA uses to associate with the fit AP .
- SSID Service Set Identifier
- the AP may be a fit AP, in which case the method is instructed by the associated AC and carried out through the fit AP .
- a fat AP is an addressable node in a communication network with its own IP address on its interfaces, and functions like a switch or router in that it provides many of the functions of such devices.
- the AP may be a fat AP, in which case the method may be carried out entirely at the fat AP.
- a plurality of virtual APs is configured at the physical AP for the plurality of STAs associated with the physical AP, such that each of the created virtual AP corresponds respectively to a single STA.
- the virtualisation may include configuring a Basic Service Set Identifier (BSSID) for the virtual AP of each STA at the physical AP .
- BSSID Basic Service Set Identifier
- the virtualisation may be instructed by the AC associated with the fit AP .
- each virtual AP sends a beacon frame to its associated STA.
- the beacon frame includes quiet information that is specific to the recipient STA and specifies a quiet period at which the STA does not access the AP via its associated virtual AP . The quiet
- the AP may send a beacon frame for each virtual AP using the BSSID of the virtual AP so as to notify the corresponding STA of the types, capacity and other parameters of the service
- a beacon interval (T B ) is the time interval between two consecutive beacon frames. This will be explained in more detail below.
- Quadet Interval indicates a periodic interval (I Q ) between two consecutive quiet periods of the STA, which may be indicated in units of a beacon interval.
- Quiet Duration indicates the duration of time (T Q ) for which the quiet period of the STA continues, or in other words, the duration of time over which the STA does not access the AP .
- Quiet Offset indicates an offset (T off ) in time relative to the start time of the beacon frame at which the quiet period of the STA begins.
- FIG 2 schematically shows an example with two quiet periods of the STA over three beacon intervals separated by beacons Bl to B4.
- the STA if the quiet information in the beacon frame Bl received by the STA indicates a Quiet Count of 1, the STA is required to carry out its quiet period (i.e. to remain quiet and not access the AP) during the first beacon interval after the beacon frame Bl (between Bl and B2) .
- the quiet period is carried out according to the parameters Quiet Interval I Q , Quiet Duration T Q and Quiet Offset (explained in more detail below) as specified in the quiet information.
- Quiet Interval I Q Quiet Duration T Q
- Quiet Offset (explained in more detail below)
- the STA is required to carry out its quiet period in the second beacon interval after the beacon frame B2, therefore in the interval T B between B3 and B4.
- the values of these parameters may be set in the quiet information, based on the total number of STAs and the number of STAs allowed to access the AP at the same time, so as to limit the number of STAs accessing the AP at any given time.
- each of the plurality of STAs receives a beacon frame from its respective virtual AP, and based on the quiet information in the beacon frame, carry out their respective quiet periods during a beacon
- each physical AP may be optimally accessed by a particular number of STA.
- the optimal number is around 4 to 8 STAs at any one time. If the number of STAs accessing the AP at a given time is less than this number, this results in some time slots being left unused and creating waste. If too many STAs are accessing the AP at a given time, this increases the likelihood of collisions.
- the specific number of STAs that can simultaneously access an AP may be determined by actual channel parameters, such as noise, interference, and channel use rate.
- the Quiet Count and Quiet Interval of the quiet information may be set to 1 for every STA.
- the Quiet Duration may be determined by :
- each STA is then arranged to have (n-m) number of O's in a beacon interval in order to allow m number of STAs to access the AP in each of the n portions of the beacon interval .
- An example of arrangements of the quiet periods is shown in Figure 3 for n STAs, STA(l), STA(2), STA(n-l), STA(n), using the "0" and "1" representation.
- the quiet period of STA(l) begins at the start of a beacon interval T B .
- the quiet period of STA(2) is offset from the start of the beacon interval by 1/n of T B , and the quiet period of
- STA(3) is offset from the start of the beacon interval by 2/n of T B . These offsets may be specified in the Quiet Offset field of the quiet information.
- the transmission time of a beacon frame by the virtual AP to this STA may be shifted.
- the virtual AP may be configured to shift the transmission of a beacon frame to STA(n) to a later time with respect to the transmission time of other STAs, such that, for example, a beacon interval of STA(n) begins with a series of l's followed by a continuous series of O's.
- Point Coordination Function PCF mode in which the AP sends a CF-Poll frame to a PCF-capable STA to permit it to transmit a frame.
- Distributed Coordination Function DCF mode an optional virtual carrier sense mechanism may be used in which
- Request-to-send (RTS) and Clear-to-send (CTS) frames are exchanged between source and destination STAs during the intervals between the data frame transmissions.
- RTS Request-to-send
- CTS Clear-to-send
- conventional STAs generally do not support PCF mode or the RTS/CTS mechanism.
- the implementation of the method is based on DCF and does not require PCF-supports in the STAs or the use of the RTS/CTS mechanism.
- the examples described above are equally applicable to an AP and STAs that support PCF and/or the RTS/CTS mechanism.
- the device comprises a virtualization module 410 for configuring one or more virtual APs at a physical AP with which a plurality of STAs associates, for example to provide each of the plurality of STAs with its own virtual AP, and a sending module 420 for sending via a respective virtual AP a beacon frame to each STA.
- the beacon frame includes quiet information for specifying a quiet period during which the STA does not access the physical AP via its virtual AP .
- the quiet information may include information of a start time at which the quiet period begins.
- the virtualization module 410 configures the one or more virtual APs by configuring each virtual AP with a respective BSSID.
- the virtualization module 410 may be provided at the AC that is associated with the fit AP, such that the fit AP receives configuration
- the device may be
- the above examples can be implemented by hardware, software, firmware, or a combination thereof.
- the various methods and functional modules described herein may be implemented by a processor (the term processor is to be interpreted broadly to include a CPU, processing unit, ASIC, logic unit, or programmable gate array etc.) .
- the methods and functional modules may all be performed by a single processor or divided amongst several processers.
- the methods and functional modules may be implemented as machine readable instructions executable by one or more processors, hardware logic circuitry of the one or more processors, or a combination thereof. Further, the
- teachings herein may be implemented in the form of a software product, the computer software product being stored in a storage medium and comprising a plurality of instructions for making a computer device (e.g. a personal computer, a server or a network device such as a router, switch, access point etc.) implement the method recited in the examples of the present disclosure.
- a computer device e.g. a personal computer, a server or a network device such as a router, switch, access point etc.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
In a wireless communication system comprising an access point AP and a plurality of stations STAs, a plurality of virtual APs are configured at the AP for the plurality of STAs. Each virtual AP sends a beacon frame to the associated STA including quiet information for specifying a quiet period during which the associated STA does not access the AP.
Description
Virtual Access Point
[0001] BACKGROUND
[0002] A communication network may be deployed wirelessly as a Wireless Local Area Network (WLAN) by allowing one or more stations (STAs) to access the communication network via an Access Point (AP) . An STA may include any
communication devices such as laptop and tablet computers, PCs and smart phones, etc. Virtual Access Point (virtual AP) technology allows a plurality of logical APs ( irtual access points') to be configured on a single physical AP .
[0003] BRIEF DESCRIPTION OF THE DRAWINGS
[0004] Figure 1 is a flow diagram of an example of a method for use in a wireless communication system;
[0005] Figure 2 is a schematic diagram showing an example of the quiet periods of an STA over several beacon
intervals ;
[0006] Figure 3 is a schematic diagram showing an example of the quiet periods of n STAs over one beacon interval; and [0007] Figure 4 is a schematic diagram of an example of a device for performing the method of Figure 1.
[0008] DETAIL DESCRIPTION
[0009] The present disclosure provides examples of a method, and a device configured to carry out the method, for use in a wireless communication system that comprises an Access Point AP and a plurality of stations STAs. In an example of the method, each of the plurality of STAs is provided with its own virtual AP . At each beacon interval, a beacon frame is sent to each STA of the plurality via a respective virtual AP . Each beacon frame of a
corresponding STA includes quiet information of the STA, which specifies a quiet period at which the STA does not access the AP via the respective virtual AP .
[0010] It may therefore be possible, using the example above, to schedule periods of time when one or more STAs remain quiet, or do not access the AP, and thus limiting the number of STAs simultaneously accessing the AP . This may help to prevent collision between communications from two different devices trying to access the AP at the same time.
[0011] Although each of a plurality of STAs associated with an AP is able to detect the presence of the AP, an individual STA, for instance STA1, may not be aware of the presence of one or more other STAs associated with the AP . In other words, a hidden node problem occurs in which one or more other STAs may be hidden from STA1 due to distance, obstacles or other reasons. In this case, uplink traffic from STA1 may be affected if STA1 attempts to access the AP while another STA that is hidden from STA1 is also
accessing the AP, which may result in collisions.
[0012] By configuring a separate virtual AP for each station associated with a physical AP, it is possible to limit the number of STAs simultaneously accessing the physical AP . In this way the performance of the network may be improved by reducing the likelihood of collision between communications accessing the physical AP .
Moreover, the above example may be straightforwardly implemented under an IEEE 802.11 standard (incorporated herein by reference) , making its integration with existing networks simple.
[0013] Examples will now be described with reference to the accompanying drawings. In the examples below, the
communication network is assumed to be a WLAN, which comprises an AP providing access to the network to two or more STAs. A fit AP provides wireless encryption while the management and policy functions are performed by the Access Controller AC that connects to the fit AP through tunnels. A fit AP may perform functions such as VLAN tagging based on the Service Set Identifier (SSID) that an STA uses to associate with the fit AP . In the examples, the AP may be a fit AP, in which case the method is instructed by the associated AC and carried out through the fit AP . A fat AP is an addressable node in a communication network with its own IP address on its interfaces, and functions like a switch or router in that it provides many of the functions of such devices. In the examples, the AP may be a fat AP, in which case the method may be carried out entirely at the fat AP.
[0014] An example of a method for use in such a wireless communication system to implement quiet periods in the STAs is shown as a flow diagram in Figure 1. [0015] At block S110, a plurality of virtual APs is configured at the physical AP for the plurality of STAs associated with the physical AP, such that each of the created virtual AP corresponds respectively to a single STA. The virtualisation may include configuring a Basic Service Set Identifier (BSSID) for the virtual AP of each STA at the physical AP . In the case of a fit AP, the virtualisation may be instructed by the AC associated with the fit AP . In the case of a fat AP, the virtualisation may be performed at the fat AP independently from the associated AC, or may be instructed by the AC associated with the fat AP .
[0016] At block S120, each virtual AP sends a beacon frame to its associated STA. The beacon frame includes quiet information that is specific to the recipient STA and specifies a quiet period at which the STA does not access the AP via its associated virtual AP . The quiet
information may include information of a start time at which the quiet period begins. In particular, the AP may send a beacon frame for each virtual AP using the BSSID of the virtual AP so as to notify the corresponding STA of the types, capacity and other parameters of the service
provided by the AP .
[0017] An example of the quiet information included in a beacon frame directed to a particular STA is shown below:
Element tD Length Quiet I Quiet Quiet Quiet
Count 1 Interval Duration Ofset
Octets: I ■7 7 [0018] The fields "Element ID" and "Length" respectively identifies the quiet period and indicate the length of the load .
[0019] "Quiet Count" indicates the position of the beacon interval after the received beacon frame in which the quiet period of the STA is carried out. A beacon interval (TB) is the time interval between two consecutive beacon frames. This will be explained in more detail below.
[0020] "Quiet Interval" indicates a periodic interval (IQ) between two consecutive quiet periods of the STA, which may be indicated in units of a beacon interval.
[0021] "Quiet Duration" indicates the duration of time (TQ) for which the quiet period of the STA continues, or in other words, the duration of time over which the STA does not access the AP .
[0022] "Quiet Offset" indicates an offset (Toff) in time relative to the start time of the beacon frame at which the quiet period of the STA begins.
[0023] Figure 2 schematically shows an example with two quiet periods of the STA over three beacon intervals separated by beacons Bl to B4. As shown in Figure 2, if the quiet information in the beacon frame Bl received by the STA indicates a Quiet Count of 1, the STA is required to carry out its quiet period (i.e. to remain quiet and not access the AP) during the first beacon interval after the beacon frame Bl (between Bl and B2) . The quiet period is carried out according to the parameters Quiet Interval IQ, Quiet Duration TQ and Quiet Offset (explained in more detail below) as specified in the quiet information. In the next beacon frame B2, if the quiet information
indicates a Quiet Count of 2, the STA is required to carry out its quiet period in the second beacon interval after the beacon frame B2, therefore in the interval TB between B3 and B4. [0024] When there is a plurality of STAs, it may be desirable for only a fixed number of STAs to access the AP at any given time during each beacon interval. In this case, the values of these parameters may be set in the quiet information, based on the total number of STAs and the number of STAs allowed to access the AP at the same time, so as to limit the number of STAs accessing the AP at any given time.
[0025] At block S130, each of the plurality of STAs receives a beacon frame from its respective virtual AP, and based on the quiet information in the beacon frame, carry out their respective quiet periods during a beacon
interval. In this way, at any given time during a beacon
interval, only some of the plurality of STAs may access the AP, thus reducing the likelihood of collision, and
improving the performance of the communication network.
[ 0026 ] In an example, each physical AP may be optimally accessed by a particular number of STA. For an AP of present technology, the optimal number is around 4 to 8 STAs at any one time. If the number of STAs accessing the AP at a given time is less than this number, this results in some time slots being left unused and creating waste. If too many STAs are accessing the AP at a given time, this increases the likelihood of collisions. The specific number of STAs that can simultaneously access an AP may be determined by actual channel parameters, such as noise, interference, and channel use rate. [ 0027 ] In an example, in order to ensure that each STA has a quiet period during each beacon interval, the Quiet Count and Quiet Interval of the quiet information may be set to 1 for every STA.
[ 0028 ] If the number of STAs associated with a physical AP is n, and the optimal number of STAs that may access the AP at any one time is m, the Quiet Duration may be determined by :
Quiet Duration = (1-m/n) χ beacon interval
[ 0029 ] If a beacon interval is considered to be divided in n equal portions, then in each of the n portions, only m number of STAs may access the AP . Using "0" to indicate that an STA cannot access the AP and "1" to indicate that an STA can access the AP, each STA is then arranged to have (n-m) number of O's in a beacon interval in order to allow m number of STAs to access the AP in each of the n portions of the beacon interval .
[0030] An example of arrangements of the quiet periods is shown in Figure 3 for n STAs, STA(l), STA(2), STA(n-l), STA(n), using the "0" and "1" representation. As can be seen in the figure, the quiet period of STA(l) begins at the start of a beacon interval TB. On the other hand, the quiet period of STA(2) is offset from the start of the beacon interval by 1/n of TB, and the quiet period of
STA(3) is offset from the start of the beacon interval by 2/n of TB. These offsets may be specified in the Quiet Offset field of the quiet information.
[0031] For an STA whose "0" positions are not continuous within a beacon interval, for example STA(n) as shown by the last (nth) row in Figure 3, the transmission time of a beacon frame by the virtual AP to this STA may be shifted. In the example of STA(n), the virtual AP may be configured to shift the transmission of a beacon frame to STA(n) to a later time with respect to the transmission time of other STAs, such that, for example, a beacon interval of STA(n) begins with a series of l's followed by a continuous series of O's.
[0032] It may be possible to avoid a hidden node problem by centralizing channel accesses in Point Coordination Function PCF mode in which the AP sends a CF-Poll frame to a PCF-capable STA to permit it to transmit a frame. In Distributed Coordination Function DCF mode, an optional virtual carrier sense mechanism may be used in which
Request-to-send (RTS) and Clear-to-send (CTS) frames are exchanged between source and destination STAs during the intervals between the data frame transmissions. However, conventional STAs generally do not support PCF mode or the RTS/CTS mechanism. Thus, in particular examples, the implementation of the method is based on DCF and does not
require PCF-supports in the STAs or the use of the RTS/CTS mechanism. Nevertheless, it is to be understood that the examples described above are equally applicable to an AP and STAs that support PCF and/or the RTS/CTS mechanism. [0033] An example of a device for performing the method above in a wireless communication system comprising the device and a plurality of stations STAs is schematically shown in Figure 4.
[0034] The device comprises a virtualization module 410 for configuring one or more virtual APs at a physical AP with which a plurality of STAs associates, for example to provide each of the plurality of STAs with its own virtual AP, and a sending module 420 for sending via a respective virtual AP a beacon frame to each STA. As described above, the beacon frame includes quiet information for specifying a quiet period during which the STA does not access the physical AP via its virtual AP . The quiet information may include information of a start time at which the quiet period begins.
[0035] In an example, the virtualization module 410 configures the one or more virtual APs by configuring each virtual AP with a respective BSSID.
[0036] In an example, when the AP used in the
communication system is a fit AP, the virtualization module 410 may be provided at the AC that is associated with the fit AP, such that the fit AP receives configuration
instructions from the virtualization module 410 of the AC, while the sending module 420 may be provided at the fit AP .
[0037] In another example, when the AP used in the
communication system is a fat AP, the device may be
provided at the fat AP .
[ 0038 ] Although the flow diagrams described above show a specific order of execution, the order of execution may differ from that which is depicted.
[ 0039 ] The above examples can be implemented by hardware, software, firmware, or a combination thereof. For example, the various methods and functional modules described herein may be implemented by a processor (the term processor is to be interpreted broadly to include a CPU, processing unit, ASIC, logic unit, or programmable gate array etc.) . The methods and functional modules may all be performed by a single processor or divided amongst several processers. The methods and functional modules may be implemented as machine readable instructions executable by one or more processors, hardware logic circuitry of the one or more processors, or a combination thereof. Further, the
teachings herein may be implemented in the form of a software product, the computer software product being stored in a storage medium and comprising a plurality of instructions for making a computer device (e.g. a personal computer, a server or a network device such as a router, switch, access point etc.) implement the method recited in the examples of the present disclosure.
[ 0040 ] It should be understood that embodiments of the method and device described above are implementation examples only, and do not limit the scope of the invention. Numerous other changes, substitutions, variations,
alternations and modifications may be ascertained by those skilled in the art, and it is intended that the present disclosure encompass all such changes, substitutions, variations, alterations and modifications as falling within the spirit and scope of the appended claims.
Claims
1. A method for use in a wireless communication system comprising an access point AP and a plurality of stations STAs, the method comprises:
configuring at the AP a plurality of virtual APs each of which is associated with one of the plurality of STAs; whereby each STA is associated with a different virtual AP; and
sending via each virtual AP a beacon frame to the associated STA, the beacon frame including quiet
information for specifying a quiet period during which the associated STA is not to access the AP .
2. The method of claim 1, wherein the configuring
includes configuring each virtual AP with a respective basic service set identifier BSSID.
3. The method of claim 1, wherein the quiet information further includes a start time at which the quiet period begins, and a quiet duration which is the duration of time for which the quiet period continues, and the start time corresponds to the start time of the quiet duration.
4. The method of claim 1, further comprising specifying in the quiet information that the quiet period is to be shorter than a beacon interval, the beacon interval being an interval between two consecutive beacon frames sent by a virtual AP, and specifying the start time in the quiet information of at least two STAs to be different from each other .
5. The method of claim 1, wherein the quiet information of an STA of the plurality comprises:
a quiet interval for indicating a periodic interval between two consecutive quiet periods of the STA, the quiet interval being in units of a beacon interval that is an interval between two consecutive beacon frames;
a quiet duration for indicating the duration of time for which the quiet period continues; and
a quiet offset for indicating an offset in time relative to a transmission time of the beacon frame at which the quiet period of the STA begins.
6. The method of claim 5, wherein the quiet information further comprises:
a quiet count for indicating a number of beacon interval counting from the beacon frame during which the quiet period of the STA begins.
7. The method of claim 5, wherein the quiet interval is set to 1 to indicate that the periodic interval between two consecutive quiet periods corresponds to one beacon
interval, the quiet duration of the STA at each quiet interval is set to be the same, and, if the quiet period of the STA is not continuous within the beacon interval, the method further comprises shifting a transmission time of the beacon frame via the associated virtual AP so that the quiet period of the STA becomes continuous within the shifted beacon interval.
8. A device for use in a wireless communication system comprising an access point AP and a plurality of stations STAs, the device comprising:
a virtualization module to configure at the AP a plurality of virtual APs, each virtual AP to associate with a respective one of the plurality of STAs; and
a sending module to send via each virtual AP a beacon frame to the associated STA, the beacon frame including quiet information for specifying a quiet period during which the associated STA does not access the AP .
9. The device of claim 8, wherein the virtualization module is to configure each virtual AP with a respective basic service set identifier BSSID.
10. The device of claim 8, wherein the sending module is to include in the quiet information a start time at which the quiet period begins, and a quiet duration which is the duration of time for which the quiet period continues, and the start time corresponds to the start time of the quiet duration .
11. The device of claim 8, wherein the sending module is to specify in the quiet information that the quiet period is to be shorter than a beacon interval, the beacon interval being an interval between two consecutive beacon frames sent by a virtual AP, and to specify the start time in the quiet information of at least two STAs to be different from each other.
12. The device of claim 8, wherein the sending module is to include in the quiet information of an STA of the plurality :
a quiet interval for indicating a periodic interval between two consecutive quiet periods of the STA, the quiet interval being in units of a beacon interval that is an interval between two consecutive beacon frames;
a quiet duration for indicating the duration of time for which the quiet period continues; and
a quiet offset for indicating an offset in time relative to a transmission time of the beacon frame at which the quiet period of the STA begins.
13. The device of claim 12, wherein the sending module further includes in the quiet information:
a quiet count for indicating a number of beacon interval counting from the beacon frame during which the quiet period of the STA begins.
14. The device of claim 12, wherein the quiet interval is set to 1 to indicate that the periodic interval between two consecutive quiet periods corresponds to one beacon
interval, the quiet duration of the respective STA at each quiet interval is set to be the same, and, if the quiet period of the STA is not continuous within the beacon interval, the sending module is to shift a transmission time of the beacon frame via the associated virtual AP so that the quiet period of the STA becomes continuous within the shifted beacon interval.
15. An access point AP for use in a wireless communication system comprising the AP, an access controller AC
associated with the AP and a plurality of stations STAs, the AP is to configure a plurality of virtual APs according to configuration instructions received from the AC, each of the plurality of virtual AP being associated with a single
one of the plurality of STAs, and the AP comprises a sending module to send via each virtual AP a beacon frame to the associated STA, the beacon frame including quiet information for specifying a quiet period during which the associated STA does not access the AP .
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210233979.8 | 2012-07-06 | ||
CN201210233979 | 2012-07-06 | ||
CN201210353615.3 | 2012-09-21 | ||
CN201210353615.3A CN103533653A (en) | 2012-07-06 | 2012-09-21 | Method and device for solving the problem of hidden nodes in local area network |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014005461A1 true WO2014005461A1 (en) | 2014-01-09 |
Family
ID=49881309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/074682 WO2014005461A1 (en) | 2012-07-06 | 2013-04-25 | Virtual access point |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN103533653A (en) |
WO (1) | WO2014005461A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108809478A (en) * | 2017-04-28 | 2018-11-13 | 华为技术有限公司 | A kind of frame sending method and relevant device |
CN109104753A (en) * | 2017-06-21 | 2018-12-28 | 中兴通讯股份有限公司 | wireless local area network access method, device, equipment and storage medium |
CN113660683A (en) * | 2021-08-18 | 2021-11-16 | 几维通信技术(深圳)有限公司 | Method for realizing thin AP mode in 5G CPE |
CN114365546A (en) * | 2020-08-14 | 2022-04-15 | 北京小米移动软件有限公司 | Communication method and communication equipment under multiple connections |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105992395B (en) * | 2015-01-30 | 2019-06-07 | 新华三技术有限公司 | The implementation method and device of super thin access point |
CN106488575B (en) | 2015-08-31 | 2021-02-09 | 中兴通讯股份有限公司 | Data transmission method, access point and station |
EP4311144A3 (en) * | 2015-08-31 | 2024-03-27 | ZTE Corporation | Data transmission method, access point, and station |
CN107333307B (en) * | 2016-04-29 | 2020-06-16 | 华为技术有限公司 | Method and equipment for switching access points in wireless local area network |
WO2018218590A1 (en) * | 2017-06-01 | 2018-12-06 | 华为技术有限公司 | Service processing method, access point and station |
CN109561449A (en) * | 2017-09-27 | 2019-04-02 | 华为技术有限公司 | A kind of wireless communications method and relevant device |
CN110677877B (en) * | 2019-10-08 | 2022-02-22 | 迈普通信技术股份有限公司 | Wireless management frame sending method and device, AP (access point) equipment and storage medium |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1812366A (en) * | 2005-01-28 | 2006-08-02 | 华为技术有限公司 | Method for realizing wireless local network virtual insertion point to-point communication |
CN102137413A (en) * | 2011-01-30 | 2011-07-27 | 华为技术有限公司 | Method and device for detecting basic service set identify (BSSID) conflict |
CN102484840A (en) * | 2009-08-17 | 2012-05-30 | 英特尔公司 | Method and system for dynamic service negotiation with a uniform security control plane in a wireless network |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101222388B (en) * | 2007-01-12 | 2013-01-16 | 华为技术有限公司 | Method and system for confirming existence of broadcast/multicast caching frame at access point |
KR101497153B1 (en) * | 2008-12-22 | 2015-03-02 | 엘지전자 주식회사 | Procedure for Basic Service Set(BSS) load management for a WLAN system |
-
2012
- 2012-09-21 CN CN201210353615.3A patent/CN103533653A/en active Pending
-
2013
- 2013-04-25 WO PCT/CN2013/074682 patent/WO2014005461A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1812366A (en) * | 2005-01-28 | 2006-08-02 | 华为技术有限公司 | Method for realizing wireless local network virtual insertion point to-point communication |
CN102484840A (en) * | 2009-08-17 | 2012-05-30 | 英特尔公司 | Method and system for dynamic service negotiation with a uniform security control plane in a wireless network |
CN102137413A (en) * | 2011-01-30 | 2011-07-27 | 华为技术有限公司 | Method and device for detecting basic service set identify (BSSID) conflict |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108809478A (en) * | 2017-04-28 | 2018-11-13 | 华为技术有限公司 | A kind of frame sending method and relevant device |
CN108809478B (en) * | 2017-04-28 | 2020-10-23 | 华为技术有限公司 | Frame sending method and related equipment |
CN109104753A (en) * | 2017-06-21 | 2018-12-28 | 中兴通讯股份有限公司 | wireless local area network access method, device, equipment and storage medium |
CN114365546A (en) * | 2020-08-14 | 2022-04-15 | 北京小米移动软件有限公司 | Communication method and communication equipment under multiple connections |
CN114365546B (en) * | 2020-08-14 | 2023-10-31 | 北京小米移动软件有限公司 | Communication method and communication device under multiple connections |
CN113660683A (en) * | 2021-08-18 | 2021-11-16 | 几维通信技术(深圳)有限公司 | Method for realizing thin AP mode in 5G CPE |
Also Published As
Publication number | Publication date |
---|---|
CN103533653A (en) | 2014-01-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014005461A1 (en) | Virtual access point | |
CN107113795B (en) | Method and system for joint coordination and coexistence in unlicensed spectrum | |
CN108141851B (en) | Method and system for selecting channel for unlicensed wireless communication | |
US9894561B2 (en) | Signaling soft time division multiplexing in enhanced distributed channel access | |
ES2632552T3 (en) | Procedure and apparatus for transmitting and receiving data in a wireless LAN system | |
JP4490824B2 (en) | Reducing interference between different communication systems sharing a common wireless transmission medium | |
US10212735B2 (en) | Communications method and device for single-frequency wireless local area network | |
US11457504B2 (en) | Data transmission method, access point and station | |
KR102167924B1 (en) | Wireless communication terminal and wireless communication method for transmitting uplink by multiple users | |
US10091803B2 (en) | Channel resource allocation method and communications device | |
US20170338935A1 (en) | Wireless communication method and wireless communication device for configuring broadband link | |
CN101288267A (en) | Beacon transmission for wireless networks | |
CN104105194A (en) | Method, apparatus, and computer program product for synchronization packet transmitter selection in a wireless network | |
CN103843443A (en) | Collision reduction mechanisms for wireless communication networks | |
CN102067651A (en) | Apparatus for multicast transmissions in wireless local area networks | |
EP3363255B1 (en) | Access point supporting at least two virtual networks and method performed thereby for communicating with wireless device | |
WO2015002656A1 (en) | Performing measurements in wireless network | |
EP2847941A1 (en) | Systems and methods to provision quality of service sensitive devices in wireless local area networks | |
CN104168662A (en) | Channel access method and access device | |
CN105284058B (en) | A kind of application method of network node and frequency spectrum resource | |
EP3915310B1 (en) | Cooperative inter-network channel selection | |
CN104160765A (en) | Base station and method for determining a spectrum allocation in a wireless network | |
JP6474712B2 (en) | Wireless communication system and wireless communication method | |
US9788340B2 (en) | Method, access point, and station for establishing association in wireless local area network | |
KR101529672B1 (en) | Method and apparatus for high speed wlan using multi-rate aware partitioning and cooperative transmission |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13813677 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13813677 Country of ref document: EP Kind code of ref document: A1 |