H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 36/00 (2009.01)
Patent
CA 2645300
The present invention relates to a method and apparatus for performing handover between a universal mobile telecommunication system (UMTS) terrestrial radio access network (UTRAN), and an evolved-UTRAN (E-UTRAN) based system. The wireless communication system includes a UTRAN, an E-UTRAN, a 2G/3G core network, and long term evolution (LTE) core network, and at least one wireless transmit/receive unit (WTRU) including an LTE element and ad 2G/3G element. According to the present invention the WTRU shall be able to handover a call initiated on the UTRAN to the E-UTRAN, and visa versa. The 2G/3G core network and the LTE core network are linked by a Gn interface.
L'invention concerne un procédé et un appareil permettant de réaliser un transfert entre un réseau d'accès radio terrestre d'un système UMTS (UTRAN) et un système évolué basé sur le réseau UTRAN (E-UTRAN). Le système de communication sans fil comprend un UTRAN, un E-UTRAN, un réseau central 2G/3G et un réseau central à évolution à long terme (LTE) et au moins une unité d'émission/réception sans fil (WTRU) comprenant un élément LTE et un élément 2G/3G. Selon l'invention, la WTRU est capable de transférer au E-UTRAN un appel lancé sur le UTRAN et vice versa. Le réseau central 2G/3G et le réseau central LTE sont reliés par une interface Gn.
Interdigital Technology Corporation
Ridout & Maybee Llp
Shaheen Kamel M.
LandOfFree
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