Method and system for hard handoff in a broadcast communication system
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United States of America Patent
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Feb 26, 2008
Grant Date -
Apr 24, 2003
app pub date -
Oct 24, 2001
filing date -
Oct 24, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method and system for a handoff in a broadcast communication system is disclosed. A subscriber-assisted handoff is impractical in a broadcast communication system due to e.g., a high signaling load, a difficulty to synchronize the broadcast transmission. On the other hand, the small number of broadcast channels enables the subscriber station to perform the handoff autonomously. While performing a handoff between broadcast transmissions, a disruption of service occurs due to lack of synchronization among the broadcast transmissions. To reduce the service disruption, upon detecting a need for handoff, the lower layers inform the application layer about the forthcoming handoff. The application layer thus may take measures to reduce or prevent the disruption.
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