Channel handoff methods in wireless broadcast systems

Details Channel handoff methods in wireless broadcast systems Channel handoff methods in wireless broadcast systems

H - Electricity

04

W

H04W 36/30 (2009.01)

Patent

CA 2693673

Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel, employing information on current MLC decoding status, to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.

L'invention concerne des systèmes et des méthodologies qui facilitent la surveillance de canaux RF dans un environnement de communication sans fil pour déterminer si un ou plusieurs canaux comportent un signal à liaison aller seulement (FLO). Un récepteur peut recevoir un premier canal RF avec un signal FLO et peut surveiller d'autres canaux RF pour des signaux FLO. Lors de la détermination qu'un canal RF surveillé comporte un signal FLO, le récepteur peut commuter entre le premier canal RF et le canal RF surveillé, en employant des informations sur l'état de décodage MCL en cours, pour faciliter la fourniture d'une réception continue du signal FLO, qui peut être un super cadre synchronisé entre les canaux RF. La détection de signal FLO peut être effectuée en utilisant un ou plusieurs parmi un protocole de détection d'énergie de canal d'identification large et un protocole de détection d'erreur de décodage de symbole d'informations de marge large.

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