Signaling mechanism for handover in digital broadcasting

Details Signaling mechanism for handover in digital broadcasting Signaling mechanism for handover in digital broadcasting

2004-10-20

2009-02-03

Nguyen, David Q (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S432100, C455S436000, C370S466000, C370S474000, C370S476000, C370S254000

Reexamination Certificate

active

07486640

ABSTRACT:
A time slicing digital broadcast system includes a dynamic handover process switching a handheld terminal receiving services in a first signal to a second signal providing the same services, while roaming among cells in the digital broadcast system. The terminal takes into account the varying intervals between bursts in the current cell and the target cell. The terminal identifies possible handover signals from a MPE/FEC frame in a data stream. A table in the MPE/FEC frame transmitted once on each transport stream contains the mapping of the real-time handover signaling to the handovers that are possible from signals that are transporting the actual transport stream. The table contains a calculated retune interval specifying the guaranteed interval for the MPE/FEC frame. In another embodiment, the MPE/FEC frame contains MAC addressing bits in the MPE section for real-time parameters in time slicing. The bits may be converted into signaling scenarios for guaranteed handover time.

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