On video multicast over wireless LANs

被引：2
|
作者：
Gopal, S [1 ]
Ramaswamy, K [1 ]
Wang, C [1 ]
机构：
[1] Rutgers State Univ, WINLAB, Piscataway, NJ 08855 USA
来源：
2004 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXP (ICME), VOLS 1-3 | 2004年
关键词：
D O I：
10.1109/ICME.2004.1394392
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In this paper, we explore and analyze the feasibility of current generation 802.11b wireless networks to sustain video multicast applications. We assess bandwidth efficiency to transport packets of various sizes over 802.116 WLAN in Distributed Coordination Function (DCF) mode and derive corresponding theoretical maximum data rates. Due to the overhead associated with the different protocol layers, the efficiency of transport can vary widely with different packet sizes. By controlled WLAN experimentation the effect of this phenomenon on video traffic is studied. Application to MPEG4-AVC streams show that the packet overhead in 802.11 DCF mode causes significant bottleneck for simultaneous multicast streams. We conclude with several suggestions to alleviate this problem including operating in 802.11 PCF mode, using a statistical multiplexer and improving design of queues in the wireless access point.
引用
收藏
页码：1063 / 1066
页数：4
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