CN105451287A - Wireless local area network user transparent switching method assisted by cellular network - Google Patents
Wireless local area network user transparent switching method assisted by cellular network Download PDFInfo
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- CN105451287A CN105451287A CN201510375191.4A CN201510375191A CN105451287A CN 105451287 A CN105451287 A CN 105451287A CN 201510375191 A CN201510375191 A CN 201510375191A CN 105451287 A CN105451287 A CN 105451287A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/165—Performing reselection for specific purposes for reducing network power consumption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a wireless local area network user transparent switching method assisted by a cellular network. The method comprises the steps that: a cellular macro base station distributes a virtual district identifier to a user when the user enters the network coverage area, and simultaneously, the cellular macro base station issues the information of the virtual district identifier to a wireless access point associated with the user; when the cellular macro base station captures that a switching event of the user is triggered, the cellular macro base station deletes the virtual district identifier on the wireless access point originally providing service and issues the virtual district identifier to a target wireless access point again, to which the user to be switched; and simultaneously, the cellular macro base station notifies the user to switch to channels of the target wireless access point for carrying out data transmission. According to the invention, the scanning time delay in a conventional wireless local area network user switching process is effectively reduced, so that the total switching time delay is reduced, and the experience of the user is effectively improved.
Description
Technical field
The present invention relates to a kind of wireless local network user changing method, particularly relate to the transparent changing method of wireless local network user that a kind of cellular network is auxiliary, belong to wireless communication technology field.
Background technology
Current, along with the develop rapidly of mobile Internet application, WLAN (wireless local area network) (WirelessLocalAreaNetwork) is popularized in the whole world on a large scale due to the advantage of its low cost, high transfer rate.But the little user brought of the coverage due to WLAN (wireless local area network) such as frequently to switch at the problem, result in user's time delay when using some application (as VoIP, multimedia video) in real time higher, having had a strong impact on the experience of user.
Although a large amount of technical work is carried out, switch with solving user the high delay problem brought in a wireless local area network, result is unsatisfactory.This problem is still an open problem current.Be such as in the Chinese patent application of 201310134084.3 at application number, disclose the connection control method of a kind of Cellular Networks and WLAN (wireless local area network) fusion.The method is by distinguishing the difference of user's physical layer data rate, adopt segmentation access strategy, and under the condition considering business model, service model and mobility model, give the computational methods of input field, the low user of data rate in WLAN (wireless local area network) is made to access cellular network as far as possible, user's accessing WLAN as far as possible that data rate is high, what alleviate low data rate users ties down effect, ensure that the service quality of user and improves throughput of system.
In existing wireless local area network technology, due to the mobility of user, subscriber equipment often needs again to find can provide the WAP (wireless access point) of preferably serving (AccessPoint), this process is mainly divided into three steps in the 802.11MAC agreement of Institute of Electrical and Electric Engineers (IEEE, InstituteofElectricalandElectronicsEngineers): scanning, re-authentication and re-association.The time delay of scanning step accounts for 90% of whole process, therefore reduces scanning delay and greatly will improve Consumer's Experience.
On the other hand, heterogeneous network converged is one of key technology of 5G.Open interface between cellular network with WLAN (wireless local area network) also cooperates mutually, will contribute to the management and control efficiency and the raising network capacity that improve whole cordless communication network.
Summary of the invention
Technical problem to be solved by this invention is the transparent changing method of wireless local network user providing a kind of cellular network auxiliary.
For realizing above-mentioned goal of the invention, the present invention adopts following technical scheme:
The transparent changing method of wireless local network user that cellular network is auxiliary, comprises the steps:
(1) user enters the region that cellular macro base station and WAP (wireless access point) cover simultaneously, sends access request to described cellular macro base station;
(2) a virtual subdistrict identifier is distributed for user in described cellular macro base station, and the information of described virtual subdistrict identifier is issued to the WAP (wireless access point) with user-association;
(3), after described WAP (wireless access point) becomes the Service Access Point of user, periodically report the channel quality between user to described cellular macro base station;
(4) described cellular macro base station calculates based on the information received and judges whether user experience quality drops under the thresholding that presets; Once judge that user experience quality is lower than thresholding, then the neighbours' WAP (wireless access point) to user sends measurement message, allows each neighbours' WAP (wireless access point) scan the channel quality between user in advance and reports described cellular macro base station;
(5) when described cellular macro base station acquisition triggers to user's handover event, the described virtual subdistrict identifier in the WAP (wireless access point) of service originally will be provided to delete, and again be issued on target wireless access points that user will be switched to; Meanwhile, described cellular macro base station notifies the channel that user is switched to target wireless access points carries out transfer of data.
Wherein more preferably, described step (2) in, being by measuring in advance with the WAP (wireless access point) of user-association, determining to provide the WAP (wireless access point) of preferably serving.
Wherein more preferably, described virtual subdistrict identifier is used for the association status machine of maintenance customer, and it comprises the information of service set identifiers, set of basic identifier and aspect, user's medium access address three.
Wherein more preferably, described cellular macro base station is connected by control plane interface with between described WAP (wireless access point).
Compared with prior art, the transparent changing method of wireless local network user provided by the present invention effectively can reduce the scanning delay in the middle of conventional WLAN user switching flow, thus reduces switching overall delay, effectively improves Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the virtual subdistrict identifier used in the present invention;
Fig. 2 is for implementing Application Scenarios-Example figure of the present invention;
Fig. 3 is the flow chart of the transparent changing method of wireless local network user provided by the present invention;
Fig. 4 switches information needed exemplary plot for the user that cellular macro base station gathers.
Embodiment
Below in conjunction with the drawings and specific embodiments, technology contents of the present invention is described in further detail.
It is that it distributes a virtual subdistrict identifier (VirtualCellID) mapped one by one with user when user enters network's coverage area that basic fundamental thought of the present invention is by cellular macro base station, meanwhile, the information of this virtual subdistrict identifier is issued to the WAP (wireless access point) with user-association by cellular macro base station.This virtual subdistrict identifier is used for the association status machine of maintenance customer, its information that should comprise as shown in Figure 1, wherein SSID and service set identifiers (ServiceSetIdentifier), BSSID and set of basic identifier (BasicServiceSetIdentifier), UserMACaddress and user's medium access address.
In the process using WLAN (wireless local area network), the WAP (wireless access point) that user accesses needs property information cycle such as the channel quality between itself and user to report cellular macro base station, and cellular macro base station will calculate according to these information and under judging whether user experience quality drops to the thresholding pre-set in real time.If user experience quality drops under the thresholding that base station pre-sets, the channel quality of informing between neighbours' WAP (wireless access point) pair of user and user is monitored by cellular macro base station, and measurement result is reported cellular macro base station.
When cellular macro base station acquisition triggers to the handover event of user, cellular macro base station will provide the virtual subdistrict identifier in the WAP (wireless access point) of service to delete originally, and again be issued on target wireless access points that user will be switched to.Meanwhile, cellular macro base station needs to notify that user is switched on the channel of target wireless access points.So far, whole switching flow just completes.
Below in conjunction with the Application Scenarios-Example shown in Fig. 2, the transparent changing method of wireless local network user provided by the present invention is described in further detail.
In the Application Scenarios-Example shown in Fig. 2, a cellular macro base station and some WAP (wireless access point) are distributed in a panel region, support that the wireless terminal of many ownership (namely Multi-homing can connect the network of multiple different systems simultaneously) is connected to WAP (wireless access point) and cellular macro base station simultaneously for one.Control plane is served as in cellular macro base station, and local wireless local area network serves as user plane, is connected between WAP (wireless access point) with cellular macro base station by control plane interface (XW interface).On the one hand, the wireless terminal of user (for statement is easy, being called for short user) to be transmitted and receive data bag by WAP (wireless access point), and on the other hand, the control signal that this wireless terminal reception is sent by cellular macro base station also makes corresponding change.
As shown in Figure 3, the transparent changing method of wireless local network user provided by the present invention comprises following step:
Step 1: the wireless terminal of user enters the region that cellular macro base station and WAP (wireless access point) cover simultaneously, sends access request to cellular macro base station.
Step 2: cellular macro base station is that user distributes a virtual subdistrict identifier mapped one by one with it, simultaneously user related information and virtual subdistrict identifier are issued to by control plane interface and can provide the WAP (wireless access point) of preferably serving (this WAP (wireless access point) is determined by measuring in advance) by cellular macro base station.After this WAP (wireless access point) becomes the Service Access Point of user, need periodically to report the information such as the channel quality between itself and user to cellular macro base station.
Step 3: cellular macro base station calculates based on the information received and judges whether user experience quality drops under the thresholding that presets.Once judge that user experience quality is lower than thresholding, then cellular macro base station sends measurement message to neighbours' WAP (wireless access point) of user, allows neighbours' WAP (wireless access point) of user scan channel quality between user in advance and by these information reportings to cellular macro base station.
Step 4: when cellular macro base station acquisition is to user's handover trigger event, cellular macro base station makes originally to provide the WAP (wireless access point) of service to send to user by control plane interface and deletes message, delete its virtual subdistrict identifier to remove the incidence relation between itself and user, and user profile and virtual subdistrict identifier are re-issued to the target wireless access points of user.Meanwhile, cellular macro base station also notifies the channel that user is switched to target wireless access points carries out transfer of data by control link.
In above-mentioned steps, the user that cellular macro base station gathers switches information needed as shown in Figure 4, comprises many-sided contents such as user ID, UE capability, listening intervals, current wireless access point, virtual subdistrict identifier, association status mark, the data rate supported.
Can be found out significantly by above-mentioned steps:
1) virtual subdistrict identifier is used to safeguard the association status machine of all users in the present invention, when user switches, only need cellular macro base station to delete the virtual subdistrict identifier in former service WAP (wireless access point) and be again handed down to the target wireless access points of user, whole process participates in without the need to user, thus achieves switching flow to user transparent.
2) as can be seen from step 3, the present invention is when user experience quality is lower than the thresholding preset, notify that neighbours' WAP (wireless access point) of user carries out scanning survey action by cellular macro base station, this switching action being equivalent to will carry out when user switches has been carried out in advance.Therefore, when user needs to switch, notify that user is directly switch in respective channel by cellular macro base station by control link and carry out transfer of data.
From analyzing above, the present invention effectively can reduce the scanning delay in the middle of conventional WLAN user switching flow, thus reduces switching overall delay, effectively improves Consumer's Experience.
The transparent changing method of wireless local network user auxiliary to cellular network provided by the present invention has above been described in detail, but obvious specific implementation form of the present invention is not limited thereto.For one of ordinary skill in the art, the various apparent change carried out it when not deviating from spirit of the present invention and right is all within protection scope of the present invention.
Claims (4)
1. the transparent changing method of wireless local network user that cellular network is auxiliary, is characterized in that comprising the steps:
(1) user enters the region that cellular macro base station and WAP (wireless access point) cover simultaneously, sends access request to described cellular macro base station;
(2) a virtual subdistrict identifier is distributed for user in described cellular macro base station, and the information of described virtual subdistrict identifier is issued to the WAP (wireless access point) with user-association;
(3), after described WAP (wireless access point) becomes the Service Access Point of user, periodically report the channel quality between user to described cellular macro base station;
(4) described cellular macro base station calculates based on the information received and judges whether user experience quality drops under the thresholding that presets; Once judge that user experience quality is lower than thresholding, then the neighbours' WAP (wireless access point) to user sends measurement message, allows each neighbours' WAP (wireless access point) scan the channel quality between user in advance and reports described cellular macro base station;
(5) when described cellular macro base station acquisition triggers to user's handover event, the described virtual subdistrict identifier in the WAP (wireless access point) of service originally will be provided to delete, and again be issued on target wireless access points that user will be switched to; Meanwhile, described cellular macro base station notifies the channel that user is switched to target wireless access points carries out transfer of data.
2. the transparent changing method of wireless local network user as claimed in claim 1, is characterized in that:
Described step (2) in, being by measuring in advance with the WAP (wireless access point) of user-association, determining to provide the WAP (wireless access point) of preferably serving.
3. the transparent changing method of wireless local network user as claimed in claim 1, is characterized in that:
Described virtual subdistrict identifier is used for the association status machine of maintenance customer, and it comprises the information of service set identifiers, set of basic identifier and aspect, user's medium access address three.
4. the transparent changing method of wireless local network user as claimed in claim 1, is characterized in that:
Described cellular macro base station is connected by control plane interface with between described WAP (wireless access point).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510375191.4A CN105451287A (en) | 2015-06-30 | 2015-06-30 | Wireless local area network user transparent switching method assisted by cellular network |
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| CN201510375191.4A CN105451287A (en) | 2015-06-30 | 2015-06-30 | Wireless local area network user transparent switching method assisted by cellular network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658620A (en) * | 2017-03-06 | 2017-05-10 | 北京小米移动软件有限公司 | Access point (AP) switching method and device |
| CN106658617A (en) * | 2017-03-06 | 2017-05-10 | 北京小米移动软件有限公司 | Access point (AP) switching method, device and system |
| CN106899974A (en) * | 2017-03-06 | 2017-06-27 | 北京小米移动软件有限公司 | A kind of method and apparatus of access point switching |
| CN116437360A (en) * | 2023-05-12 | 2023-07-14 | 中国电信股份有限公司北京研究院 | Heterogeneous network construction method, communication method based on heterogeneous network and related equipment |
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| 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) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106658620A (en) * | 2017-03-06 | 2017-05-10 | 北京小米移动软件有限公司 | Access point (AP) switching method and device |
| CN106658617A (en) * | 2017-03-06 | 2017-05-10 | 北京小米移动软件有限公司 | Access point (AP) switching method, device and system |
| CN106899974A (en) * | 2017-03-06 | 2017-06-27 | 北京小米移动软件有限公司 | A kind of method and apparatus of access point switching |
| CN106658620B (en) * | 2017-03-06 | 2020-09-08 | 北京小米移动软件有限公司 | Method and device for switching access points |
| CN106899974B (en) * | 2017-03-06 | 2021-01-01 | 北京小米移动软件有限公司 | Method and device for switching access points |
| CN116437360A (en) * | 2023-05-12 | 2023-07-14 | 中国电信股份有限公司北京研究院 | Heterogeneous network construction method, communication method based on heterogeneous network and related equipment |
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