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Method and apparatus for tightly coupled interworking between cellular network and wlan network

A technology of wireless local area network and cellular network, applied in the field of tightly coupled interconnection and devices between cellular network and wireless local area network network

Inactive Publication Date: 2008-02-27
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to support these functions, the WLAN terminal 140 must have a built-in UMTS module, and additional standardization work for the interface is required

Method used

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  • Method and apparatus for tightly coupled interworking between cellular network and wlan network
  • Method and apparatus for tightly coupled interworking between cellular network and wlan network
  • Method and apparatus for tightly coupled interworking between cellular network and wlan network

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Embodiment Construction

[0025] Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following explanation, detailed descriptions of known functions and configurations incorporated herein are omitted for clarity and understanding.

[0026] According to an exemplary embodiment of the present invention, a Code Division Multiple Access (CDMA) 2000 1X system can be used as a cellular network, and a Wireless Fidelity (WiFi) network according to IEEE 802.11x can be used as a wireless local area network (WLAN) The internet.

[0027] In particular, the implementation of the present invention provides the configuration of a tightly coupled interconnection scheme that allows a terminal to efficiently perform switching from a cellular network to a WLAN network, the protocol stack of the terminal and the system, the protocol stack performed between the terminal and the access gateway (AGW) Layer 3 access point establishment process, and ...

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Abstract

When a terminal moves from a WLAN network to a cellular network after being allocated an IP address from a PDSN of the cellular network, a tightly coupled interworking method and apparatus between the cellular network and the WLAN network set up a temporary tunnel between the PDSN and an AGW of the WLAN network, and after completion of the handoff from the WLAN network to the cellular network, inform the PDSN of the handoff completion from the terminal, thereby enabling fast seamless handoff without data loss. Compared with the conventional tightly coupled scheme, the proposed tightly coupled scheme can prevent the need for processing cellular signals in the WLAN network because there is no need to transmit cellular signals in a WLAN interval, especially between the terminal and the AGW.

Description

technical field [0001] The invention relates to an interconnection method and device between heterogeneous networks. Specifically, the present invention relates to a tightly coupled interconnection method and device for allowing a terminal to switch to a WLAN network without changing components of the cellular network in an interconnection scheme using a cellular network and a wireless local area network (WLAN). Background technique [0002] In recent years, with the rise of WLAN services, business issues of interconnection between third generation (3G) cellular networks and WLAN networks are attracting widespread attention. During vertical switching in two heterogeneous networks, switching time and packet loss caused by switching are very important factors. Therefore, there is a need for an efficient interconnection scheme that minimizes switching time and packet loss. Furthermore, the required changes in existing systems and terminals required for interconnection between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46
CPCH04L12/66A61F7/12A61F5/0093A61B18/08A61F7/007A61F2007/126A61B2017/00084A61F2007/0028A61F2007/0073
Inventor 孔栋建文相畯李知彻金大锡李相道丁兴澈李圣元
Owner SAMSUNG ELECTRONICS CO LTD
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