Abstract
A scheme for VBR video coding is proposed where encoding bandwidth can be renegotiated between the encoder and the network during the duration of a call. Renegotiation can be initiated by either the encoder or the network. The encoder's bandwidth requirement is characterized by a usage parameter control (UPC) set consisting of peak rate, burst length and sustained rate. An adaptive encoder rate-control algorithm at the network interface card (NIC) computes the necessary UPC parameters to maintain the user specified quality-of-service (QoS). The network may, optionally, set a lower UPC value to deal with congestion. Simulation results are given for a rate-controlled VBR video encoder operating through an ATM network interface which supports dynamic UPC. These results suggest that dynamic bandwidth renegotiation could provide significant quality gains and/or bandwidth savings with graceful degradation during renegotiation transients, even in the presence of relatively large feedback delay.
| Original language | English (US) |
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| Pages | 1773-1777 |
| Number of pages | 5 |
| State | Published - 1995 |
| Externally published | Yes |
| Event | Proceedings of the 1995 IEEE International Conference on Communications. Part 1 (of 3) - Seattle, WA, USA Duration: Jun 18 1995 → Jun 22 1995 |
Other
| Other | Proceedings of the 1995 IEEE International Conference on Communications. Part 1 (of 3) |
|---|---|
| City | Seattle, WA, USA |
| Period | 6/18/95 → 6/22/95 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering