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Coupling Loss and Delay Differentiation to Enhance TCP Performance within Wireless Multi-hop Ad-hoc Networks
| Content Provider | CiteSeerX |
|---|---|
| Author | Ghaleb-Seddik, Alaa Ghamri-Doudane, Yacine Senouci, Sidi Mohammed |
| Abstract | Abstract—Most existing TCP variants cannot distinguish between different packet loss causes within MANETs. TCP was, mainly, developed to deal with network congestion errors. While within MANETs, there are packet loss causes other than congestion. Studying the behaviour of TCP in front of such losses, we notice that TCP doesn’t have always the optimum behaviour as it reacts, in most cases, without considering the loss cause. This misbehaviour might cause network performance degradation and resources ’ waste. To overcome this problem, many LDAs have been designed. However, these LDAs were optimized for data networks where wireless link is only the last hop, meaning that they might be inadequate for MANETs. Also, the proposed LDAs deal only with losses due to wireless channel and/or congestion-induced errors. We show, in this paper, the importance of dealing with a third loss cause that is common in MANETs, which is link failure. We propose a new TCP variant that is called TCP-WELCOME. TCP-WELCOME can: (i) identify the loss cause by coupling loss and delay information, and (ii) trigger the appropriate packet loss recovery according to the identified loss cause. The performance evaluation, through both simulations and experimental tests, shows that TCP-WELCOME optimizes both energy consumption and achievable throughput. TCP-WELCOME does not change the standard and can operate with existing TCP variants. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Tcp Performance Wireless Multi-hop Ad-hoc Network Delay Differentiation Loss Cause Tcp Variant Energy Consumption Appropriate Packet Loss Recovery Link Failure Optimum Behaviour Third Loss Cause Delay Information Congestion-induced Error Data Network Identified Loss Cause Experimental Test Last Hop New Tcp Variant Achievable Throughput Network Performance Degradation Different Packet Loss Cause Wireless Link Performance Evaluation Tcp Doesn Network Congestion Error Packet Loss Resource Waste Many Ldas |
| Content Type | Text |
