Abstract
In this paper, we propose a consistent random backoff (CRB) scheme to reduce the channel access delay jitter in voice over wireless local area networks. In the CRB scheme, a contention window (CW) size at each backoff stage is determined by hashing the session identifier and the talk spurt index. Therefore, all packets in the same talk spurt of a session have the same CW sizes if they are transmitted at the same backoff stage. Since a modulo-division operation with the identical maximum CW value is applied, fairness with the legacy backoff scheme (i.e.; binary exponential backoff) is also provided. Extensive simulation results demonstrate that the CRB scheme can reduce the channel access delay jitter by 54 %.
Original language | English |
---|---|
Pages (from-to) | 1379-1390 |
Number of pages | 12 |
Journal | Wireless Personal Communications |
Volume | 69 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2013 Apr |
Keywords
- Binary exponential backoff
- Consistent hashing
- Consistent random backoff
- Voice over WLANs
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering