Performance results are presented which indicate that packetized voice service can be provided on a token-passing ring without adversely affecting the performance of data traffic. This is accomplished by introducing a relatively mild priority structure: stations are limited to a single packet transmission per medium access, and the voice packets are given access priority over data packets at the same station. In addition, voice traffic is allowed longer packet lengths than data traffic. Several versions of this basic scheme are considered: (1) the number of active stations is constrained so that the voice packets are guaranteed access within one packetization period; (2) no guarantee on access time is provided and the voice packets are discarded when the waiting time exceeds one packetization period; and (3) no guarantee on access time is provided and the voice packets are buffered until they can be transmitted.
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering