The synchronous Transfer Mode is an International Telecommunication UnionTelecommunications standards section for cell relay wherein information for multiple service types, such as voice, video, or data is conveyed in small, fixed sire cells. ATM are connection oriented. ATM standard is widely accepted by common carriers as mode of operation for communication. It is a form of cell switching using small fixed sired packets. ATM network will be organized as a hierarchy. Asynchronous transfer mode is quickly evolving to enable the full use of Broad Band Integrated Services Digital Network.

Asynchronous Transfer Mode

In the recent past lot of research has been taken place for the medium access control protocols for wireless ATM with their relative merit and demerits. This protocol is centered around the view that worst case waiting time for any user should not become infinite and at the same time the best effort should be provided not to drop any handoff call or the existing call. The contention method assumed for the channel access is CSMA/CA. A new call request is not dropped even if the bandwidth is not provided rather it recirculates with increasing priority. This leads to a higher acceptance probability of new calls.

http://ieeexplore.ieee.org/iel5/9787/30872/01431398.pdf

S. Shailendra

Papers

The non pre-emptive absolute priority based medium access control protocol for wireless ATM