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Pastimes : The New Qualcomm - write what you like thread.

QCOM 174.53

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To: S100 who wrote (4368)	3/20/2002 12:05:45 AM
From: S100	Read Replies (1) of 12231

A method for conveying packet data from a CDMA mobile station to a GSM network, including communicating with a GSM service node to establish a data link from the mobile station to the network via a radio communications base station. The packet data are conveyed between the mobile station and the base station over a CDMA air interface and are then transferred over the link between the base station and the network l2.espacenet.com A novel and improved method and apparatus for switching the radio interface layer of a wireless telephone call from code division multiple access (CDMA) cellular to GSM time division multiple access (TDMA) cellular during the course of that telephone call or other communication is described. In accordance with one embodiment of the invention, a set of base stations operating in accordance with the GSM standard generate pilot beacons signals in accordance with CDMA technology. During a phone call, a subscriber unit detects CDMA pilot signals, and notifies a base station controller when CDMA pilot signals are detected and the strength at which they are received. The base station controller identifies CDMA pilot signals from CDMA pilot beacon, and initiates a CDMA to GSM handover via the generation of a set of signaling messages which instruct the subscriber unit and receiving GSM infrastructure equipment to prepare for the switching of the radio interface layer. The subscriber unit responds by acquiring the GSM synchronization information and establishing a RF interface with the GSM base station without interrupting the telephone call being conducted. l2.espacenet.com The present invention is directed to a digital wireless telecommunications system that includes a plurality of base station of differing spectral capabilities, and a plurality of remote stations capable of transmitting data to and receiving transmissions from the plurality of base stations. The invention herein provides a method for remote station hand-off between the base stations of a narrower spectral capacity and base stations of a wider spectral capacity. A method is provided for a wireless telecommunications infrastructure to facilitate a remote station hand-off from a set of narrowband compliant base stations to at least one wideband compliant base station while a remote station is in the coverage area of both types of base stations. Additionally, the invention herein provides remote station apparatus, base station apparatus, and base station controller apparatus for performing the handoff methodology of the present invention. l2.espacenet.com

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