EP1527630A4

Method and apparatus for wlan-umts interworking employing umts air interface

Abstract

A format converter for use with a universal mobile telecommunications system (UMTS) having a transceiver, a wireless local area network (WLAN) having an access point (AP) and a wireless terminal, for providing access to the UMTS by the terminal. The format converter comprises a WLAN transceiver for sending and receiving messages to and from the AP; a UMTS transceiver for sending and receiving messages to and from the transceiver in the UMTS; and a translator for translating WLAN messages to UMTS format and UMTS messages to WLAN format.

Term

Term ended

Projected expiry passed 22 July 2023, 3.2 years ago.

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Citations
DocumentRelationOfficeCategoryCited duringRelevant claims
WO0219617A2CitesWorld Intellectual Property Organization (WIPO)ASearch report1-12
WO0219617ACitesWorld Intellectual Property Organization (WIPO)
OSTROWSKI F: "ROAMING UND HANDOVER ZWISCHEN UMTS UNK FUNK-LAN", 2002, NTZ (NACHRICHTENTECHNISCHE ZEITSCHRIFT), VDE VERLAG GMBH. BERLIN, DE, PAGE(S) 24-26, ISSN: 0027-707X, XP001124094Non-patentSearch report
GERDES M ET AL: "TCP PERFORMANCE ANALYSIS OF INTER-SYSTEM HANDOVER BETWEEN WLAN AND A UMTS RADIO ACCESS NETWORK", 6 October 1999, ITG FACHBERICHTE, VDE VERLAG, BERLIN, DE, PAGE(S) 345-349, ISSN: 0932-6022, XP008039082Non-patentSearch report
SHIAO-LI TSAO ET AL: "Design and evaluation of umts-wlan interworking strategies", VTC 2002-FALL. 2002 IEEE 56TH. VEHICULAR TECHNOLOGY CONFERENCE PROCEEDINGS. VANCOUVER, CANADA, SEPT. 24 - 28, 2002, IEEE VEHICULAR TECHNOLGY CONFERENCE, NEW YORK, NY : IEEE, US, vol. VOL. 1 OF 4. CONF. 56, 24 September 2002 (2002-09-24), pages 777 - 781, XP010608918, ISBN: 0-7803-7467-3Non-patentSearch report