MBMS acknowledgements on RACH

Details MBMS acknowledgements on RACH MBMS acknowledgements on RACH

2011-01-25

2011-01-25

Trost, IV, William (Department: 2472)

Multiplex communications

Channel assignment techniques

Carrier sense multiple access

C370S431000, C370S445000, C370S447000

Reexamination Certificate

active

07876771

ABSTRACT:
The present invention relates to multicast communication systems and in particular to the implementation of a random access uplink channel, which can be used, e.g., for transmission of acknowledgement messages for received data. In order to prevent frequent collisions on said channel, the transmission of acknowledgement messages is spread at least over time or, additionally, with regard to another distinguishing channel property, e.g. a RACH sub-channel or RACH-signature.

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Swedish Patent Office, International Search Report for PCT/SE2004/001430, dated Jan. 27, 2005.

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