MBMS acknowledgements on RACH
US7876771B2 · kind B2 · utility
36Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Nov 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0866
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.