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학술대회 Efficient QoS Scheduling Algorithm for Multimedia Services in IEEE 802.11e WLAN
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이강용, 조기성, 류원
Vehicular Technology Conference (VTC) 2011 (Fall), pp.1-6
11PR2300, 차세대 IPTV인프라 기반 Social TV 서비스 인에이블러 개발, 류원
As IEEE 802.11 wireless local area network (WLAN) devices currently have gained wide popularity, demands on quality of service (QoS) capability have increased as well. Although IEEE 802.11e is proposed for the support of QoS by traffic and service differentiation, it still has weakness on the adapting the multimedia services which has the traffic characteristic of variable bit rate (VBR). In this paper, we first discuss problems of the current standard and analyze how to improve the QoS capability in IEEE 802.11e. In addition, we propose a new scheduling algorithm, referred to as ETA-EQN, which aims at supporting multimedia service in HCCA of IEEE 802.11e WLAN. Results from intensive simulations with NS-2 verify that ETA-EQN provides much better network performance in terms of throughput, delay, and packet loss. © 2011 IEEE.
component, IEEE 802.11e, Multimedia, QoS, Scheduling, Wireless LAN
KSP 제안 키워드
802.11e WLAN, Current standard, IEEE 802.11 wireless local area network, Local Area Network(LAN), Multimedia Service, Network performance, Network simulator-2(NS2), QoS scheduling, Scheduling algorithm, Service differentiation, Traffic characteristics