TY - JOUR
T1 - A selective downlink scheduling algorithm to enhance quality of VOD services for WAVE networks
AU - Chen, Hsiao Hwa
AU - Ou, Shumao
AU - Yang, Kun
AU - Galis, Alex
N1 - Funding Information:
The authors would like to gratefully acknowledge the UK Engineering and Physical Sciences Research Council (EPSRC) Project PANDA (EP/D061881/1) and Taiwan National Science Council Grant NSC 97-2219-E-006-004.
PY - 2009
Y1 - 2009
N2 - Providing quality-of-service- (QoS-) guaranteed video on demand (VOD) services over wireless access in vehicular environments (WAVEs) is a challenge as WAVE adopts enhanced distributive channel access (EDCA), a contention-based channel access mechanism, for air interface access control. This paper proposes a selective downlink scheduling (SDS) algorithm to enhance the quality of VOD for WAVE networks. According to the importance of video decoding, video packets are categorized into high and low priorities. The categorized packets are put into different queues in roadside units (RSUs) to contend for transmission opportunities. Aiming to improve video playback quality and reduce video playback delay, the proposed SDS algorithm schedules video packets based on their importance, playback deadline, and their real-time parameters of receiving onboard units (OBUs), such as velocity and remaining dwelling time. The effectiveness of SDS algorithm is verified by simulations.
AB - Providing quality-of-service- (QoS-) guaranteed video on demand (VOD) services over wireless access in vehicular environments (WAVEs) is a challenge as WAVE adopts enhanced distributive channel access (EDCA), a contention-based channel access mechanism, for air interface access control. This paper proposes a selective downlink scheduling (SDS) algorithm to enhance the quality of VOD for WAVE networks. According to the importance of video decoding, video packets are categorized into high and low priorities. The categorized packets are put into different queues in roadside units (RSUs) to contend for transmission opportunities. Aiming to improve video playback quality and reduce video playback delay, the proposed SDS algorithm schedules video packets based on their importance, playback deadline, and their real-time parameters of receiving onboard units (OBUs), such as velocity and remaining dwelling time. The effectiveness of SDS algorithm is verified by simulations.
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U2 - 10.1155/2009/478157
DO - 10.1155/2009/478157
M3 - Article
AN - SCOPUS:62649152288
SN - 1687-1472
VL - 2009
JO - Eurasip Journal on Wireless Communications and Networking
JF - Eurasip Journal on Wireless Communications and Networking
M1 - 478157
ER -