Method for synchronizing voice traffic with minimum latency in a wireless communications network
US7693182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2007 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Mar 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/828
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A supervisory communications node monitors and controls communications with a plurality of remote devices throughout a widely distributed network. A method is provided to convey and maintain information used to synchronize the packetization and burst operations within the network. During session setup, jitter constraints indirectly are used to explicitly communicate a synchronization timing reference. The timing reference is set at the beginning of a phase/period boundary used to service the session. In an embodiment, the announcement of the first grant is used as an explicit indication of the synchronization timing reference value. In another embodiment, the synchronization timing reference value is inferred if a remote device receives contiguous voice grants meeting certain conditions. In an embodiment implementing periodic scheduling, the actual arrival of the first grant is used to infer the synchronization timing reference value. In an embodiment, the present invention enables the synchronization timing reference value and/or the periodicity to be modified if network conditions indicate that packetization and burst operations are out-of-synchronization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.