Method and system for hard handoff in a broadcast communication system
AssigneeQUALCOMM Incorporated
InventorNikolai K. N. Leung
Life of this patent
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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.
Claims16
A method in a communication system, comprising:
- processing a broadcast session on a first broadcast channel transmitted from a first terminal in accordance with a first set of parameters;
- performing a handoff to a second broadcast channel transmitted from a second terminal;
- and
- processing the broadcast session on the second broadcast channel in accordance with the first set of parameters if a handoff period is less than life of the broadcast session.
An apparatus in a communication system, comprising:
- means for processing a broadcast session on a first broadcast channel transmitted from a first terminal in accordance with a first set of parameters;
- means for performing a handoff to a second broadcast channel transmitted from a second terminal;
- and
- means for processing the broadcast session on the second broadcast channel in accordance with the first set of parameters if a handoff period is less than life of the broadcast session.
An apparatus in a communication system, comprising:
- a memory;
- and
- a device communicatively coupled to the memory and capable of performing digital signal processing configured to:
- process a broadcast session on a first broadcast channel transmitted from a first terminal in accordance with a first set of parameters;
- perform a handoff to a second broadcast channel transmitted from a second terminal;
- and
- process the broadcast session on the second broadcast channel in accordance with the first set of parameters if a handoff period is less than lifetime of the broadcast session.
A computer readable medium storing instructions for execution by a processor, comprising:
- instructions for processing a broadcast session on a first broadcast channel transmitted from a first terminal in accordance with a first set of parameters;
- instructions for performing a handoff to a second broadcast channel transmitted from a second terminal;
- and
- instructions for processing the broadcast session on the second broadcast channel in accordance with the first set of parameters if a handoff period is less than life of the broadcast session.
Dependencies are inferred from the claim text.