Abstract
The derivation of the constraints on the encoded bit rate of a video signal imposed by a channel, encoder and decoder buffers is important in the context of video transmission over a wireless channel. In this paper, we derive the conditions for buffer control to ensure that the buffers do not overflow or underflow when video is transmitted over a variable bit rate channel. Using these conditions and a commonly proposed network-user contract, the effect of a network policing function (or usage parameter control function) on the allowable variability of the encoded video bit rate is examined. The details of how these effects might be implemented in a system that controls both the encoded and transmitted bit rates is also presented.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 49-56 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3228 |
| DOIs | |
| State | Published - Dec 1 1998 |
| Event | Multimedia Networks: Security, Displays, Terminals, and Gateways - Dallas, TX, United States Duration: Nov 4 1997 → Nov 4 1997 |
Keywords
- Buffer control
- Congestion
- Policing function
- Variable bit-rate (VBR)
- Wireless ATM LAN
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering