Bandwidth estimation schemes for TCP over wireless networks
Bandwidth estimation schemes for TCP over wireless networks
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DOI：
10.1109/tmc.2004.5
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发表时间：
2004-04-01
影响因子：
7.9
通讯作者：
Martignon, F
中科院分区：
文献类型：
--
作者：
Capone, A;Fratta, L;Martignon, F
最近提出了在TCP拥塞控制方案中使用增强的带宽估计过程，作为改善受随机丢失影响的链路上的TCIP性能的一种方式。本文首先分析了在TCP连接的发送端实现的每种带宽估计算法所面临的问题。然后回顾了一些估计算法，分析和比较了它们的估计精度和性能。针对现有算法在带宽估计和公平共享网络资源方面的不足，提出了基于时间间隔的带宽估计技术（TIBET）。这是一种新的带宽估计方案，可以在TCIP拥塞控制过程中实现，仅修改连接的发送端。TIBET的使用增强了无线链路上的TCIP源性能。分析了TIBET方案的性能，并与其它方案进行了比较。此外，通过研究TCIP行为与理想的带宽估计，我们提供了一个上限的所有可能的方案的性能基于不同的带宽估计。
The use of enhanced bandwidth estimation procedures within the congestion control scheme of TCP was proposed recently as a way of improving TCIP performance over links affected by random loss. This paper first analyzes the problems faced by every bandwidth estimation algorithm implemented at the sender side of a TCP connection. Some proposed estimation algorithms are then reviewed, analyzing and comparing their estimation accuracy and performance. As existing algorithms are poor in bandwidth estimation, and in sharing network resources fairly, we propose TIBET (Time Intervals based Bandwidth Estimation Technique). This is a new bandwidth estimation scheme that can be implemented within the TCIP congestion control procedure, modifying only the sender-side of a connection. The use of TIBET enhances TCIP source performance over wireless links. The performance of TIBET is analyzed and compared with other schemes. Moreover, by studying TCIP behavior with an ideal bandwidth estimation, we provide an upper bound to the performance of all possible schemes based on different bandwidth estimates.