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1. KR1020050008746 - EFFICIENT HANDOFFS BETWEEN CELLULAR AND WIRELESS LOCAL AREA NETWORKS

Office
République de Corée
Numéro de la demande 1020047019256
Date de la demande 26.11.2004
Numéro de publication 1020050008746
Date de publication 21.01.2005
Numéro de délivrance 1009976540000
Date de délivrance 02.12.2010
Type de publication B1
CIB
H04Q 7/24
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
QSÉLECTION
7Dispositifs de sélection auxquels les abonnés sont reliés par des liaisons radio-électriques ou des liaisons inductives
20dans lesquels les liaisons radio-électriques ou inductives sont bidirectionnelles, p.ex. systèmes radio-mobiles
24utilisant des centraux ou des réseaux publics avec intégration au moins partielle du service ou de l'application mobiles
H04L 12/28
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
12Réseaux de données à commutation
28caractérisés par la configuration des liaisons, p.ex. réseaux locaux ou réseaux étendus
H04Q 7/38
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
QSÉLECTION
7Dispositifs de sélection auxquels les abonnés sont reliés par des liaisons radio-électriques ou des liaisons inductives
20dans lesquels les liaisons radio-électriques ou inductives sont bidirectionnelles, p.ex. systèmes radio-mobiles
38Dispositions pour compléter l'appel de ou vers l'abonné mobile
H04B 7/26
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
BTRANSMISSION
7Systèmes de transmission radio, c. à d. utilisant un champ de rayonnement
24pour communication entre plusieurs postes
26dont au moins un est mobile
CPC
H04W 36/0033
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
0005Control or signalling for completing the hand-off
0011for data session or connection
0033with transfer of context information
H04W 36/0066
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
0005Control or signalling for completing the hand-off
0055Transmission and use of information for re-establishing the radio link
0066of control information between different types of networks in order to establish a new radio link in the target network
H04W 84/12
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
84Network topologies
02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
10Small scale networks; Flat hierarchical networks
12WLAN [Wireless Local Area Networks]
H04W 88/182
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
88Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
18Service support devices; Network management devices
182Network node acting on behalf of an other network entity, e.g. proxy
H04W 80/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
80Wireless network protocols or protocol adaptations to wireless operation
08Upper layer protocols
10adapted for ; application; session management, e.g. SIP [Session Initiation Protocol]
Déposants NORTEL NETWORKS LIMITED
노오텔 네트웍스 리미티드
Inventeurs JANEVSKI GORAN G.
자네브스키,고란,지.
SYED HAMID
시드,하미드
GAGE BILL
게이즈,빌
Mandataires 주성민
백만기
이중희
Données relatives à la priorité 10324551 20.12.2002 US
60/383,546 28.05.2002 US
Titre
(EN) EFFICIENT HANDOFFS BETWEEN CELLULAR AND WIRELESS LOCAL AREA NETWORKS
(KO) 셀룰러와 무선 근거리 통신망 사이의 효율적인 핸드오프
Abrégé
(EN)

The present invention facilitates a handoff between cellular and wireless local area networks (WLANs). To facilitate a WLAN interface with the cellular network, a proxy packet control function (P-PCF) establishes a data tunnel to a packet data serving node (PDSN), as well as a WLAN association with a mobile terminal. The WLAN association is a tunnel, and is preferably implemented via an Access Router acting as a liaison between the proxy PCF and an Access Point. The Access Router and the proxy PCF establish an IP tunnel, which carries the WLAN user's PPP traffic. Handoffs between the cellular and WLAN networks are facilitated by effecting a same-PDSN, inter-PCF handoff wherein the communication session with the mobile terminal is effectively changed from between the PDSN and the proxy PCF to between the PDSN and a PCF associated with a base station controller facilitating the cellular access, and vice versa.

© KIPO & WIPO 2007


(KO) 본 발명은 셀룰러와 무선 근거리 통신망(WLAN) 사이의 핸드오프를 용이하게 한다. 셀룰러망과의 WLAN 인터페이스를 용이하게 하기 위해, 프록시 패킷 제어 펑션(P-PCF)은 이동 단말과의 WLAN 연결은 물론 패킷 데이터 서빙 노드(PDSN)로의 데이터 터널을 설정한다. WLAN 연결은 터널이고, 양호하게는 프록시 PCF와 액세스 포인트 사이의 연락소 역할을 하는 액세스 라우터를 통해 구현된다. 액세스 라우터 및 프록시 PCF는 IP 터널을 설정하고, 이는 WLAN 사용자의 PPP 트래픽을 전송한다. 셀룰러와 WLAN 망 사이의 핸드오프는 이동 단말과의 통신 세션이 PDSN과 프록시 PCF 사이로부터 PDSN과 셀룰러 액세스를 용이하게 하는 기지국 제어기와 연결된 PCF 사이로 변경되는 동일 PDSN, PCF간 핸드오프를 발효하여 용이하게 된다.