CN111263406A - Load balancing method and system based on virtual access point - Google Patents
Load balancing method and system based on virtual access point Download PDFInfo
- Publication number
- CN111263406A CN111263406A CN201911302397.9A CN201911302397A CN111263406A CN 111263406 A CN111263406 A CN 111263406A CN 201911302397 A CN201911302397 A CN 201911302397A CN 111263406 A CN111263406 A CN 111263406A
- Authority
- CN
- China
- Prior art keywords
- access point
- virtual access
- migration target
- migrated
- virtual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/082—Load balancing or load distribution among bearers or channels
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A load balancing method and system based on virtual access points are disclosed. The method can comprise the following steps: setting a threshold value of the number of associated sites; detecting whether the number of associated stations of a physical access point is larger than a threshold of the number of associated stations, if so, marking the physical access point as a physical access point to be migrated, and further determining a virtual access point to be migrated; determining a migration target physical access point, and establishing a migration target virtual access point on the migration target physical access point; copying the site information of the virtual access point to be migrated to a migration target virtual access point; and simultaneously closing the virtual access point to be migrated and opening the migration target virtual access point to realize load balancing. According to the invention, through the migration of the virtual access point, the station can be quickly migrated to a new physical access point, the station does not need to be switched to the new access point, the change of the physical access point cannot be sensed, and the communication service of the station section cannot be influenced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a load balancing method and system based on a virtual access point.
Background
In a wireless local area network, a station can move freely between networks, and the station communicates with other stations in the internet or WLAN through an ap (access point). Due to the limited coverage of APs, mobile stations often need to switch between different APs. True handovers are difficult to perform in sparse or medium density 802.11 networks because of permanent or temporary coverage holes there. With the development and maturity of wireless local area network technology, the popularization and application of wireless terminal equipment, the increasing of AP deployment density, and the generation of high-density WLAN systems in time.
In a high-density WLAN environment, when a mobile station moves out of the communication range of one AP and into the communication range of another AP, the continuity of mobile service requires that the wireless network system must be able to support frequent and rapid handoff of the station. Especially for multimedia or VoIP services with high real-time requirements, if handover is impossible or the handover delay is too long, not only the quality of service will be significantly reduced, but also the whole session may be disconnected.
According to the IEEE802.11 wireless communication standard, in the conventional mac (media Access control) layer Access and station switching protocol, when an STA leaves an originally associated AP and wants to Access a new AP, the STA scans currently available APs on all channels, receives Beacon frames from the APs, and listens to Received Signal Strength (RSSI), and then selects an AP with the largest RSSI for association at the end of the scanning process. However, in a high-density WLAN system, there is a lot of user activity in the network, and if the mobile station makes a selection when accessing the network and switching between them only depending on the RSSI of the AP, it will cause load imbalance of each AP in the system due to the different number of associated users. At this time, the AP with high signal strength serves many stations, the load of the AP end is heavy, and the problems of long average service response time, link congestion, and the like occur; while other APs will be idle, resulting in a decrease in overall network performance and a waste of wireless network resources. Therefore, it is necessary to develop a load balancing method and system based on virtual access points.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a load balancing method and system based on a virtual access point, which can enable a station to be quickly migrated to a new physical access point through migration of the virtual access point, the station does not need to be switched to the new access point, the change of the physical access point cannot be sensed, and the communication service of a station section cannot be influenced.
According to one aspect of the invention, a load balancing method based on a virtual access point is provided. The method may include: setting a threshold value of the number of associated sites; detecting whether the number of associated stations of a physical access point is larger than a threshold of the number of associated stations, if so, marking the physical access point as a physical access point to be migrated, and further determining a virtual access point to be migrated; determining a migration target physical access point, and establishing a migration target virtual access point on the migration target physical access point; copying the site information of the virtual access point to be migrated to the migration target virtual access point; and simultaneously closing the virtual access point to be migrated and opening the migration target virtual access point to realize load balancing.
Preferably, the determining of the virtual access point to be migrated includes: and determining the virtual access point with the least number of associated sites in the physical access points to be migrated, and marking the virtual access point as the virtual access point to be migrated.
Preferably, the physical access point with the lightest load is marked as the migration target physical access point.
Preferably, the establishing of the migration target virtual access point on the migration target physical access point comprises: transmitting the basic information of the virtual access point to be migrated to the migration target physical access point; and the migration target physical access point establishes the migration target virtual access point according to the basic information.
Preferably, the basic information includes SSID information and BSSID information.
Preferably, SSID information of the virtual access point to be migrated and the migration target virtual access point is the same as BSSID information.
Preferably, the copying the station information of the virtual access point to be migrated to the migration target virtual access point includes: sequentially sending the station information of the virtual access point to be migrated to the migration target physical access point; and the migration target physical access point writes the site information into a site information table of the migration target virtual access point to finish the copying.
Preferably, the method further comprises the following steps: and the migration target physical access point writes the station information into a corresponding virtual access point working state table.
According to another aspect of the present invention, a load balancing system based on virtual access points is provided, which is characterized in that the system comprises: the centralized controller is connected with the plurality of physical access points and is used for operating and controlling the load balancing method; each physical access point comprises a plurality of virtual access points, and the virtual access points communicate with the stations and interact with data; the load balancing method comprises the following steps: setting a threshold value of the number of associated sites; detecting whether the number of associated stations of a physical access point is larger than a threshold of the number of associated stations, if so, marking the physical access point as a physical access point to be migrated, and further determining a virtual access point to be migrated; determining a migration target physical access point, and establishing a migration target virtual access point on the migration target physical access point; copying the site information of the virtual access point to be migrated to the migration target virtual access point; and simultaneously closing the virtual access point to be migrated and opening the migration target virtual access point to realize load balancing.
Preferably, the determining of the virtual access point to be migrated includes: and determining the virtual access point with the least number of associated sites in the physical access points to be migrated, and marking the virtual access point as the virtual access point to be migrated.
Preferably, the physical access point with the lightest load is marked as the migration target physical access point.
Preferably, the establishing of the migration target virtual access point on the migration target physical access point comprises: transmitting the basic information of the virtual access point to be migrated to the migration target physical access point; and the migration target physical access point establishes the migration target virtual access point according to the basic information.
Preferably, the basic information includes SSID information and BSSID information.
Preferably, SSID information of the virtual access point to be migrated and the migration target virtual access point is the same as BSSID information.
Preferably, the copying the station information of the virtual access point to be migrated to the migration target virtual access point includes: sequentially sending the station information of the virtual access point to be migrated to the migration target physical access point; and the migration target physical access point writes the site information into a site information table of the migration target virtual access point to finish the copying.
Preferably, the method further comprises the following steps: and the migration target physical access point writes the station information into a corresponding virtual access point working state table.
The method and apparatus of the present invention have other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts.
Fig. 1 shows a flow chart of the steps of a virtual access point based load balancing method according to the present invention.
Fig. 2 shows a schematic diagram of a virtual access point based load balancing system according to an embodiment of the invention.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 1 shows a flow chart of the steps of a virtual access point based load balancing method according to the present invention.
In this embodiment, the method for load balancing based on virtual access points according to the present invention may include: step 101, setting a threshold value of the number of associated stations; step 102, detecting whether the number of associated stations of a physical access point is larger than a threshold of the number of associated stations, if so, marking the physical access point as a physical access point to be migrated, and further determining a virtual access point to be migrated; step 103, determining a migration target physical access point, and establishing a migration target virtual access point on the migration target physical access point; step 104, copying the site information of the virtual access point to be migrated to a migration target virtual access point; and step 105, closing the virtual access point to be migrated and opening the migration target virtual access point simultaneously to realize load balancing.
In one example, determining a virtual access point to migrate includes: and determining the virtual access point with the least number of associated sites in the physical access points to be migrated, and marking the virtual access point as the virtual access point to be migrated.
In one example, the least loaded physical access point is marked as the migration target physical access point.
In one example, establishing the migration target virtual access point on the migration target physical access point comprises: transmitting basic information of a virtual access point to be migrated to a migration target physical access point; and the migration target physical access point establishes a migration target virtual access point according to the basic information.
In one example, the base information includes SSID information and BSSID information.
In one example, SSID information of the virtual access point to be migrated and the migration target virtual access point is the same as BSSID information.
In one example, the copying the station information of the virtual access point to be migrated to the migration target virtual access point includes: sequentially sending the station information of the virtual access points to be migrated to a migration target physical access point; and the migration target physical access point writes the station information into a station information table of the migration target virtual access point to finish the copying.
In one example, further comprising: and the migration target physical access point writes the station information into the corresponding virtual access point working state table.
Specifically, the load balancing method based on the virtual access point according to the present invention may include:
setting a threshold value of the number of associated sites; detecting whether the number of associated stations of a Physical Access Point (PAP) is larger than a threshold of the number of associated stations, if so, starting a load balancing service, marking the physical access point as a physical access point to be migrated, further determining a Virtual Access Point (VAP) with the minimum number of associated stations in the physical access point to be migrated, and marking the virtual access point as a virtual access point to be migrated.
Marking the physical access point with the lightest load as a migration target physical access point, and transmitting basic information of the virtual access point to be migrated to the migration target physical access point; and the migration target physical access point establishes a migration target virtual access point according to the basic information, namely SSID information and BSSID information, and the SSID information and the BSSID information of the virtual access point to be migrated and the migration target virtual access point are the same.
Sequentially sending the station information of the virtual access points to be migrated to a migration target physical access point; and the migration target physical access point writes the station information into the working state table of the virtual access point and the station information table of the migration target virtual access point to finish the copying. And simultaneously closing the virtual access point to be migrated and opening the migration target virtual access point to realize load balancing. This achieves a diving transfer between the two PAPs. In one load balancing, a plurality of sites can be migrated, that is, one virtual access point to be migrated, which is connected with the plurality of sites, is migrated to a migration target virtual access point with the same SSID and BSSID, and the sites are automatically connected to a new VAP, so that one batch migration is completed, time consumed for site switching due to the load balancing is greatly saved, and the system balancing is fast and efficient.
According to the method, the station can be quickly migrated to the new physical access point through the migration of the virtual access point, the station does not need to be switched to the new access point, the change of the physical access point cannot be sensed, and the communication service of the station section cannot be influenced.
Fig. 2 shows a schematic diagram of a virtual access point based load balancing system according to an embodiment of the invention.
According to an embodiment of the present invention, there is provided a load balancing system based on a virtual access point, the system including: the system comprises an integrated controller (AC), a plurality of physical access points and a plurality of APP management programs, wherein the AC is connected with the physical access points and used for managing all the PAP and VAP under the control of the load balancing method, the AC also serves as a gateway of the whole network and is communicated with a wide area network, information interaction between a site in a load system and an external WAN is carried out, the AC supports services such as DHCP and the like in the network, an IP address is distributed to the site, the access to the wide area network and the Internet service are provided, and the AC is operated with an AC management program which comprises a designed APACP protocol (a communication protocol between the physical access; the physical access point, namely the physical entity of the access point, is a device with processing ability with wireless network card and wired network card, there is complete network protocol stack in PAP, facilitate communicating with AC, exchange information, in the course of load balancing, PAP notifies AC self present VAP and site information, receive the load balancing control command that AC sends at the same time, in addition, the wired network interface between PAP and AC also acts as the communication interface between site and WAN; each physical access point comprises a plurality of virtual access points, each virtual access point is the smallest particle of load balancing among the PAPs, each VAP can be independently discovered by the station and carries out communication and data interaction with the station, the VAP is only a virtual access point and has no physical entity, a plurality of VAPs on one PAP share the wireless interface resources of the PAP, and therefore the VAPs under one PAP all work on the same channel;
the load balancing method comprises the following steps: setting a threshold value of the number of associated sites; detecting whether the number of associated stations of a physical access point is larger than a threshold of the number of associated stations, if so, marking the physical access point as a physical access point to be migrated, and further determining a virtual access point to be migrated; determining a migration target physical access point, and establishing a migration target virtual access point on the migration target physical access point; copying the site information of the virtual access point to be migrated to a migration target virtual access point; and simultaneously closing the virtual access point to be migrated and opening the migration target virtual access point to realize load balancing.
In one example, determining a virtual access point to migrate includes: and determining the virtual access point with the least number of associated sites in the physical access points to be migrated, and marking the virtual access point as the virtual access point to be migrated.
In one example, the least loaded physical access point is marked as the migration target physical access point.
In one example, establishing the migration target virtual access point on the migration target physical access point comprises: transmitting basic information of a virtual access point to be migrated to a migration target physical access point; and the migration target physical access point establishes a migration target virtual access point according to the basic information.
In one example, the base information includes SSID information and BSSID information.
In one example, SSID information of the virtual access point to be migrated and the migration target virtual access point is the same as BSSID information.
In one example, the copying the station information of the virtual access point to be migrated to the migration target virtual access point includes: sequentially sending the station information of the virtual access points to be migrated to a migration target physical access point; and the migration target physical access point writes the station information into a station information table of the migration target virtual access point to finish the copying.
In one example, further comprising: and the migration target physical access point writes the station information into the corresponding virtual access point working state table.
According to the system, the station can be quickly migrated to a new physical access point through the migration of the virtual access point, the station does not need to be switched to the new access point, the change of the physical access point cannot be sensed, and the communication service of the station section cannot be influenced.
Application example
To facilitate understanding of the solution of the embodiments of the present invention and the effects thereof, a specific application example is given below. It will be understood by those skilled in the art that this example is merely for the purpose of facilitating an understanding of the present invention and that any specific details thereof are not intended to limit the invention in any way.
Setting a threshold value of the number of associated sites; and the AC detects that the number of the associated stations on the PAP0 bound under the AC is greater than the threshold value of the number of the associated stations, starts load balancing service, marks the physical access point as a physical access point to be migrated, finds the VAP0i with the minimum number of the associated stations from the data structure of the PAP0 under the AC, and takes the VAP0i as a virtual access point to be migrated.
The AC selects one of the current PAP 0's neighbor PAP as the least loaded PAP n for the migration target physical access point. The AC sends a management frame to the PAPn, the information of the VAP0i is sent to the PAPn, the PAP n generates a VAP ni with the same SSID and BSSID as the VAP0i after receiving the management information, the VAP ni is the migration target virtual access point, and the newly generated VAP ni is in a closed state.
The AC sequentially sends the station information associated with VAP0i to PAPN, and after receiving the station information, PAP n writes the station information into the virtual access point working state table maintained by the AC and the station information table managed by VAPni. After all the site information under VAP0i is copied ON PAPN and VAPni, after the AC receives the confirmation information of PAPN, the AC sends a VAP-OFF management frame to PAP0 and sends VAP-ON to PAPN, and after the PAP0 receives the VAP-OFF frame, the PAP 0i is turned OFF, and the PAPN receives the VAP-ON frame sent by the AC and quickly turns ON VAPni. In order to avoid station switching, a station under VAP0i can continuously receive Beacon information sent by an AP with the same BSSID and SSID during the whole load balancing process under the scheduling of an AC and cooperation between APs, so that from the perspective of an STA, the station still connects to the same AP. Therefore, the load balancing strategy can smoothly complete the process of establishing a wireless link with the new AP under the condition of ensuring the existing communication quality of the terminal while rapidly adjusting the problem of load imbalance among the APs in the network.
In summary, the station can be quickly migrated to a new physical access point through the migration of the virtual access point, the station does not need to be switched to the new access point, the change of the physical access point cannot be sensed, and the communication service of the station section cannot be influenced.
It will be appreciated by persons skilled in the art that the above description of embodiments of the invention is intended only to illustrate the benefits of embodiments of the invention and is not intended to limit embodiments of the invention to any examples given.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A load balancing method based on a virtual access point is characterized by comprising the following steps:
setting a threshold value of the number of associated sites;
detecting whether the number of associated stations of a physical access point is larger than a threshold of the number of associated stations, if so, marking the physical access point as a physical access point to be migrated, and further determining a virtual access point to be migrated;
determining a migration target physical access point, and establishing a migration target virtual access point on the migration target physical access point;
copying the site information of the virtual access point to be migrated to the migration target virtual access point;
and simultaneously closing the virtual access point to be migrated and opening the migration target virtual access point to realize load balancing.
2. The virtual access point-based load balancing method of claim 1, wherein determining the virtual access point to be migrated comprises:
and determining the virtual access point with the least number of associated sites in the physical access points to be migrated, and marking the virtual access point as the virtual access point to be migrated.
3. The virtual access point-based load balancing method of claim 1, wherein the physical access point with the lightest load is marked as the migration target physical access point.
4. The virtual access point-based load balancing method of claim 1, wherein establishing a migration target virtual access point on the migration target physical access point comprises:
transmitting the basic information of the virtual access point to be migrated to the migration target physical access point;
and the migration target physical access point establishes the migration target virtual access point according to the basic information.
5. The virtual access point-based load balancing method of claim 4, wherein the base information comprises SSID information and BSSID information.
6. The virtual access point-based load balancing method according to claim 5, wherein SSID information of the virtual access point to be migrated and the migration target virtual access point are the same as BSSID information.
7. The virtual access point-based load balancing method according to claim 1, wherein the copying of the station information of the virtual access point to be migrated to the migration target virtual access point comprises:
sequentially sending the station information of the virtual access point to be migrated to the migration target physical access point;
and the migration target physical access point writes the site information into a site information table of the migration target virtual access point to finish the copying.
8. The virtual access point based load balancing method of claim 7, further comprising:
and the migration target physical access point writes the station information into a corresponding virtual access point working state table.
9. A load balancing system based on virtual access points, the system comprising:
the centralized controller is connected with the plurality of physical access points and is used for operating and controlling the load balancing method;
each physical access point comprises a plurality of virtual access points, and the virtual access points communicate with the stations and interact with data;
the load balancing method comprises the following steps:
setting a threshold value of the number of associated sites;
detecting whether the number of associated stations of a physical access point is larger than a threshold of the number of associated stations, if so, marking the physical access point as a physical access point to be migrated, and further determining a virtual access point to be migrated;
determining a migration target physical access point, and establishing a migration target virtual access point on the migration target physical access point;
copying the site information of the virtual access point to be migrated to the migration target virtual access point;
and simultaneously closing the virtual access point to be migrated and opening the migration target virtual access point to realize load balancing.
10. The virtual access point-based load balancing system of claim 9, wherein determining the virtual access point to migrate comprises:
and determining the virtual access point with the least number of associated sites in the physical access points to be migrated, and marking the virtual access point as the virtual access point to be migrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911302397.9A CN111263406A (en) | 2019-12-17 | 2019-12-17 | Load balancing method and system based on virtual access point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911302397.9A CN111263406A (en) | 2019-12-17 | 2019-12-17 | Load balancing method and system based on virtual access point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111263406A true CN111263406A (en) | 2020-06-09 |
Family
ID=70953896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911302397.9A Pending CN111263406A (en) | 2019-12-17 | 2019-12-17 | Load balancing method and system based on virtual access point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111263406A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114286327A (en) * | 2021-11-30 | 2022-04-05 | 全讯汇聚网络科技（北京）有限公司 | Method, device and system for virtual roaming of wireless network |
| CN114599071A (en) * | 2022-04-25 | 2022-06-07 | 中国电信股份有限公司 | Wireless access method, device, system, wireless controller and wireless access point |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711084A (en) * | 2012-06-18 | 2012-10-03 | 杭州华三通信技术有限公司 | Method and device for realizing centralized control and multichannel deployment of stations (STA) |
| US20130054813A1 (en) * | 2011-08-24 | 2013-02-28 | Radware, Ltd. | Method for live migration of virtual machines |
| CN104123171A (en) * | 2014-06-10 | 2014-10-29 | 浙江大学 | Virtual machine migrating method and system based on NUMA architecture |
| CN106341844A (en) * | 2016-11-30 | 2017-01-18 | 北京邮电大学 | SDN based wireless local area network load balancing method and device the same |
| CN109600811A (en) * | 2019-01-28 | 2019-04-09 | 重庆邮电大学 | WLAN seamless handover method and equipment based on location aware |
-
2019
- 2019-12-17 CN CN201911302397.9A patent/CN111263406A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130054813A1 (en) * | 2011-08-24 | 2013-02-28 | Radware, Ltd. | Method for live migration of virtual machines |
| CN102711084A (en) * | 2012-06-18 | 2012-10-03 | 杭州华三通信技术有限公司 | Method and device for realizing centralized control and multichannel deployment of stations (STA) |
| CN104123171A (en) * | 2014-06-10 | 2014-10-29 | 浙江大学 | Virtual machine migrating method and system based on NUMA architecture |
| CN106341844A (en) * | 2016-11-30 | 2017-01-18 | 北京邮电大学 | SDN based wireless local area network load balancing method and device the same |
| CN109600811A (en) * | 2019-01-28 | 2019-04-09 | 重庆邮电大学 | WLAN seamless handover method and equipment based on location aware |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114286327A (en) * | 2021-11-30 | 2022-04-05 | 全讯汇聚网络科技（北京）有限公司 | Method, device and system for virtual roaming of wireless network |
| CN114599071A (en) * | 2022-04-25 | 2022-06-07 | 中国电信股份有限公司 | Wireless access method, device, system, wireless controller and wireless access point |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2019271960B2 (en) | Method of controlling handover in mobile communication networks and apparatus and system implementing the method | |
| JP4382348B2 (en) | Service priority in multi-cell networks | |
| US8027312B2 (en) | Wireless communication methods and components that implement handoff in wireless local area networks | |
| CN101583151B (en) | Method of STA roaming in WLAN network and device | |
| US8275376B2 (en) | Handover between a cellular network and an unlicensed-radio access network using a single identifier for all the access points | |
| KR101637587B1 (en) | METHOD FOR CONTROLLING CONNECTION AT Femto Base station and Connection METHOD AT Terminal | |
| US20070264996A1 (en) | Mobile communication with unlicensed-radio access networks | |
| EP2203017B1 (en) | Method for determining channel quality | |
| CN108738098B (en) | Method for seamless switching among multiple access points of WLAN (Wireless local area network) | |
| EP3799455A1 (en) | Roaming method, access point, and access point collaborative work controller | |
| US10104595B2 (en) | Method of automatically adjusting mobility parameter | |
| WO2018228347A1 (en) | Wireless client sta roaming | |
| CN111263406A (en) | Load balancing method and system based on virtual access point | |
| KR20050013965A (en) | Radio network controller and radio communications method | |
| US8548461B2 (en) | Device roaming in hybrid Wi-Fi/wireline and multi-AP networks | |
| KR20090066642A (en) | Method and apparatus for handover in mobile node by selecting an access network based on user preference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200609 |
|
| RJ01 | Rejection of invention patent application after publication |