Samsung Electronics Co., Ltd.

Eun-Young Chung

Ji-Cheol Lee

Sung-Won Lee

Sang-Jun Moon

Dong-Keon Kong

Sang-Do Lee

Heung-Chul Jung

Hye-Won Baek

Jong-Bum Pyo

A method and a system are disclosed for transmitting/receiving data in heterogeneous communication systems having a mobile station, a first communication system currently accessed by the mobile station, and a second communication system having an access scheme different from the first communication system. The method includes accessing, by the mobile station, the first communication system and maintaining an active session with the first communication system; accessing, by the mobile station, the second communication system and requesting an active session to the second communication system when sensing handover to the second communication system while the active session with the first communication system is maintained; and maintaining, by the mobile station, the active session with the first communication system by means of an active session with the second communication system created according to the requested active session.

Method and system for transmitting/receiving data in heterogeneous communication systems

A method for performing a handoff between a wireless local area network (LAN) including an access router (AR) supporting an Internet protocol (IP) routing function and a mobile communication network including a packet data service node (PDSN) connected to a base station system (BSS), for supporting the IP routing function. An access terminal (AT) detects its movement from the wireless LAN to the mobile communication network, and exchanges information for tunneling between the AR and the PDSN, with the PDSN. The PDSN sets up a tunnel for packet delivery between the PDSN and the AR, and delivers packets to the AT through the set tunnel.

Handoff system and method between a wireless LAN and mobile communication network

Growing community of inventors

Suwon-si, South Korea

Eun-Young Chung