Method and apparatus for mapping voice activity detection to a scheduled access media
US6621812B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1999 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jan 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2207/203
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Unsolicited grants are allocated a selected time interval for scheduling transmission of audio packets at a network endpoint. A network processing node switches from outputting unsolicited grants to polling for packet transmission requests when Voice Activity Detection (VAD) at the transmitting endpoint stops generating audio packets. The network processing node switches back to outputting unsolicited grants when the endpoint resumes generation of audio packets. The unsolicited grants include one or more additional grants within the selected time interval that flush out one or more audio packets that may already be queued for transmitting. These additional grants reduce the latency normally caused when Voice Activity Detection (VAD) stops and then restarts audio packet transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.