Abstract
This paper presents an analytical model of a cross-layer communication system to enable improvement in the Transmission Control Protocol (TCP) over mixed wired and wireless Internet. The focus is on the quantitative performance evaluation of the interactions between TCP NewReno and a hybrid Automatic Repeat reQuest protocol (HARQ) in the link layer (LL) with a finite buffer size. The significant improvement in TCP NewReno throughput when HARQ adaptively selects its optimal settings according to explicit cross-layer information is shown. Through ns-2 simulations, it is demonstrated that this proposed analytical model accurately predicts the TCP-HARQ system performance.
Highlights
This paper presents an analytical model which can be used to replace simulated testing for assessing the performance of mixed wired and wireless networks using Transmission Control Protocol (TCP)
This paper presents an analytical model of a cross-layer communication system to enable improvement in the Transmission Control Protocol (TCP) over mixed wired and wireless Internet
The accuracy and correctness of the analytical model of the TCP-hybrid Automatic Repeat reQuest protocol (HARQ) system predictions is demonstrated even with the number of assumptions made in the development of HARQ and TCP characterisations
Summary
This paper presents an analytical model which can be used to replace simulated testing (which typically gives inconsistent results and is laborious to carry out) for assessing the performance of mixed wired and wireless networks using TCP. ARQ protocols are used in works such as [12,13,14,15], the impact of Forward Error Correction (FEC) codes is analysed in [18] whilst TCP interactions with HARQ systems are studied in [16,17,19]. In none of these works is TCP NewReno analytical modelling developed, all these mentioned works but [12] have used the Reno version.
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