TY - JOUR
T1 - A cross-layer approach to reduce channel access delay jitter in IEEE 802.11 WLANs
AU - Pack, Sangheon
AU - Kim, Kihun
AU - Kim, Wonjung
AU - Song, Taewon
AU - Min, Seongman
N1 - Funding Information:
The preliminary version of the paper was presented at the IEEE ICCCN Workshop on Performance Modeling and Evaluation in Computer and Telecommunication Networks, Hawaii, USA, August 2011. This research was supported in part by WCU Project (R33-2008-000-10044-0) and in part by the KCC R&D program supervised by the KCA (KCA-2011-08913-04002).
PY - 2013/4
Y1 - 2013/4
N2 - 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 %.
AB - 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 %.
KW - Binary exponential backoff
KW - Consistent hashing
KW - Consistent random backoff
KW - Voice over WLANs
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U2 - 10.1007/s11277-012-0639-x
DO - 10.1007/s11277-012-0639-x
M3 - Article
AN - SCOPUS:84879696147
VL - 69
SP - 1379
EP - 1390
JO - Wireless Personal Communications
JF - Wireless Personal Communications
SN - 0929-6212
IS - 4
ER -