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Roaming method for mobile terminal in wireless local area network, related access controller and access point device

A technology of an access point device and an access controller, which is applied in the communication field and can solve problems such as the inability of the mobile agent discovery mechanism to work

Active Publication Date: 2013-12-04
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mobile agent discovery mechanism in MIP technology cannot work when adopting centralized WLAN architecture

Method used

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  • Roaming method for mobile terminal in wireless local area network, related access controller and access point device
  • Roaming method for mobile terminal in wireless local area network, related access controller and access point device
  • Roaming method for mobile terminal in wireless local area network, related access controller and access point device

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Embodiment Construction

[0018] It is believed that the above and other objects, features and advantages of the present invention will be more apparent through the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

[0019] figure 1 A schematic structural diagram of a wireless local area network to which a method for roaming a mobile terminal in a wireless local area network can be applied according to an embodiment of the present invention is shown, wherein the wireless local area network adopts a centralized network architecture. Such as figure 1As shown, the wireless local area network includes multiple ESSs (for simplicity, only two ESSs are shown: ESS1 and ESS2), wherein, there is an access controller AC1 in ESS1, which controls the access point device WTP1, and There are two access controllers AC21 and AC22 in the ESS2, wherein the access controller AC21 controls the access point device WTP2a, and the access controller ...

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Abstract

A roaming method for a mobile terminal in a wireless local area network is disclosed. In the method, a target access point (AP) device receives an access request for roaming from the mobile terminal, and a target access controller (AC) obtains mobility information of the mobile terminal in an original extended service set based on the access request, wherein the mobility information include information of an AP device, an AC and a mobile agent server associated with the mobile terminal. Then the target AC determines whether the roaming for the mobile terminal is an inter-IP subnet roaming or an intra-IP subnet roaming based on the obtained mobility information. The target AC performs mobile IP based handover when the roaming is determined as the inter-IP subnet roaming and performs Inter Access Point Protocol based handover when the roaming is determined as the intra-IP subnet roaming.

Description

technical field [0001] The present invention relates to the wireless local area network (WLAN) technology in the field of communication, in particular, to the roaming technology of the mobile terminal in the wireless local area network. Background technique [0002] In recent years, wireless local area networks, such as WiFi networks, are being widely used in home users and public hot spots to provide broadband high-speed wireless access services to mobile terminals. In a wireless local area network, a single Access Point (AP) device that supports one or more mobile terminals is called a Basic Service Set (BSS for short), where an AP device is identified by a Basic Service Set ID (BSSID) identify. Two or more basic service sets form an extended service set (Extended Service Set, ESS for short), usually an ESS is a single logical network segment (one ESS is in one IP subnet), and through its service set identifier (ESSID ) identification. [0003] Common wireless LAN netwo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W36/10H04W88/08H04W88/12
CPCH04W36/32H04W48/16H04W24/00H04W36/08H04W36/14H04W88/08H04W36/0033H04W24/02H04W84/12H04W88/02H04W80/04H04W60/00H04W36/324H04W36/142H04W8/02H04W36/10H04W88/12
Inventor 郑军姚春燕温海波宾梵翔马松伟
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD