Time-division multiplexed pilot signal for integrated mobile broadcasts

摘要

A pilot channel signal for time-division multiplexing with one or more traffic channel signals in a broadcast/multi-cast signal and for code-division multiplexing with a continuously transmitted pilot channel signal is described. In an exemplary method for transmitting a broadcast/multicast signal, a pilot symbol sequence is obtained for each slot of one or more frames of the broadcast/multicast signal, so that the pilot symbol sequence varies for each slot of a given frame. The pilot symbol sequence for each slot is spread with a channelization code, and the spread pilot symbol sequence for each slot is scrambled, using a scrambling code, to form a first pilot channel signal. The first pilot channel signal is transmitted so that it is time-division multiplexed with one or more traffic channel signals transmitted during each slot and code-division multiplexed with a second pilot channel signal transmitted during all slots of the one or more frames.

主权项

1. A method for transmitting a broadcast/multicast signal in a mobile communications network from a base station operating in a Single Frequency Network (SFN) that includes one or more other base stations transmitting the broadcast/multicast signal, the method comprising:
obtaining a first pilot symbol sequence for each slot of one or more frames of the broadcast/multicast signal, so that the first pilot symbol sequence varies for each slot of a given frame in dependence on a scrambling code corresponding to the slot; channelization code spreading the first pilot symbol sequence for each slot; scrambling the spread first pilot symbol sequence for each slot, using the scrambling code corresponding to the slot, to form a first pilot channel; and transmitting the first pilot channel signals so that the first pilot channel signals are time-division multiplexed with one or more traffic channel signals transmitted during each slot; and transmitting, during all slots of the one or more frames, a second pilot channel signal that is code division multiplexed with the first pilot channel signal.