WLAN中语音业务质量保证

doi:10.3969/j.issn.1000-0801.2004.08.013

Abstract

Ying Zhang. Enhancement of VoIP QoS in WLAN[J]. Telecommunications Science, 2004, 20(8): 44-47.

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References 9

1	IEEE 802.11.IEEE standard for wireless LAN medium access control (MAC)and physical layer specification, 1997
2
3	IEEE802.11e.Medium access control(MAC) enhancements for quality of service(QoS),
4	ITU-T Recommendation G.114.Delay, 1998
5
6	Ramachandran R , Jim K , Don T , et al. Adaptive playout mechanisms for packetized audio applications in wide-area networks.In: Proceeding of the Conference on Computer Communications (IEEE Infocom), Toronto, Canada, 1994
7	Liu F , Kim J , Kuo C J . Internet voice playout scheduling for integrated delay and error concealment. In:IEEE ICASSP, 2002
8
9	Chen D Y , Garg S , Kappes M , et al. Trivedi,supporting VBR VoIP traffic in IEEE 802.11 WLAN in PCF mode. In:OPNETWORK, Washington DC, August 2002

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VoIP回路延时	G.711压缩算法(ms)	G.726压缩算法(ms)
编码/解码	5.5	5.5
聚合/拆分	10	20
抖动缓存	10	20
WLAN 接入延时	10	20
接入点路由延时	10	10
企业网路由延时	5	5
主骨干网延时（允许）	99.5	69.5
总延时	150	150

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Enhancement of VoIP QoS in WLAN

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