Method and apparatus for performing a hand-off in a wireless...

Details Method and apparatus for performing a hand-off in a wireless... Method and apparatus for performing a hand-off in a wireless...

H - Electricity

04

Q

H04Q 7/38 (2006.01)

Patent

CA 2142964

An apparatus for performing a hand-off in a wireless communication system (100) comprises a plurality of fixed communication units (102) and a controller (104) coupled to the plurality of fixed communication units (102), and further comprises a portable communication unit (120). The fixed communication units receive (504) a common master synchronization signal from the controller, and receive (524) from the controller a request to monitor receivable transmissions from the portable communication unit (120) on the original channel. The fixed communication units perform (526) synchronous monitoring of the receivable transmissions from the portable communication unit (120) on the original channel, frame synchronization being established by the common master synchronization signal and maintained by maintaining bita synchronization while transmitting user data.

L'invention est un appareil de transfert d'appel pour les systèmes de communication sans fil (100). L'appareil de l'invention comprend une pluralité d'unités de communication fixes (102) et un contrôleur (104) couplé à cette pluralité, ainsi qu'une unité de communication portative (120). Les unités de communication fixes reçoivent (504) un signal de synchronisation pilote commun du contrôleur et reçoivent également (524) de ce dernier une demande de surveillance des transmissions qui peuvent être reçues de l'unité de communication portative (120) sur le canal originel. Les unités de communication fixes effectuent (526) une surveillance synchrone des transmissions qui peuvent être reçues de l'unité de communication portative (101) sur le canal originel, la synchronisation de trame étant réalisé par le signal de synchronisation pilote commun et maintenue par synchronisation des bits durant la transmission des données.

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