BULGARIAN ACADEMY OF SCIENCES
BULGARIAN ACADEMY OF SCIENCES
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DOI：
10.2478/cait-2020-0034
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发表时间：
2020-09
影响因子：
1.2
通讯作者：
Mosleh M Abualhaj;S. Al-Khatib;Qusai Y. Shambour
中科院分区：
文献类型：
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作者：
Mosleh M Abualhaj;S. Al-Khatib;Qusai Y. Shambour
摘要IP语音（VoIP）由于其较大的数据包报头大小与其较小的数据包有效载荷相比，浪费了宝贵的带宽。本文的主要目标是减少这种浪费的带宽量，提出了一种新的数据包合并方法，称为有效载荷收缩和数据包合并（PS-PC）。提出的PS-PC方法通过以下方式减少了浪费的带宽量：i）将一组VoIP数据包合并在一个报头中，而不是每个数据包的单独报头中; ii）根据某种算法将VoIP数据包有效负载缩小到更小的数据包。所提出的PS-PC方法部署在发送方VoIP网关处，该网关代表无数数量的同时VoIP呼叫的出口点。性能评估表明，更好的带宽使用时，部署建议的PS-PC方法与ITTP协议相比，传统的ITTP协议没有PS-PC方法。
Abstract Voice over IP (VoIP) wastes a valuable amount of bandwidth because of its large packet header size compared to its small packet payload. The main objective of this paper is to reduce the amount of this wasted bandwidth, by proposing a new packets coalescence method, called Payload Shrinking and Packets Coalesce (PS-PC). The proposed PS-PC method reduces the amount of the wasted bandwidth by i) coalesces a group of VoIP packets in one header instead of a separate header to each packet and ii) shrinks the VoIP packet payload to a smaller one based on a certain algorithm. The proposed PS-PC method is deployed at the sender side VoIP gateway that represents an exit point to a myriad number of simultaneous VoIP calls. The performance evaluation showed better bandwidth usage when deploying the proposed PS-PC method with ITTP protocol in comparison to the traditional ITTP protocol without the PS-PC method.