Optimal design of hybrid FEC/ARQ schemes for TCP over wireless links with Rayleigh fading

被引：18
作者：
Vacirca, F [1 ]
De Vendictis, A [1 ]
Baiocchi, A [1 ]
机构：
[1] Univ Roma La Sapienza, Dept Informat & Commun, I-00184 Rome, Italy
来源：
IEEE TRANSACTIONS ON MOBILE COMPUTING | 2006年 / 5卷 / 04期
关键词：
wireless communication; TCP modeling; hybrid ARQ;
D O I：
10.1109/TMC.2006.1599400
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we investigate interactions between TCP and wireless hybrid FEC/ARQ schemes. The aim is to understand what is the best configuration of the wireless link protocol in order to guarantee TCP performance and channel efficiency. Interactions between TCP and different link layer mechanisms are evaluated by means of an analytic model that reproduces: 1) a Rayleigh fading channel with FEC coding, 2) a generic selective repeat ARQ Protocol, and 3) the TCP behavior in a wired-cum-wireless network scenario. The analytic model is validated by means of ns-based simulations. The analysis represents a contribution to the optimal design of link layer parameters of wireless networks crossed by TCP/IP traffic. The main findings can be summarized as follows: 1) fully reliable ARQ protocols are the best choice for both TCP performance and wireless link efficiency and 2) optimal values of FEC redundancy degree from the point of view of energy efficiency maximizes TCP performance as well.
引用
收藏
页码：289 / 302
页数：14
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