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Throughput and Delay Analysis of IEEE 802.11 String-Topology Multi-Hop Network in TCP Traffic with Delayed ACK
Kosuke SANADA Hiroo SEKIYA Kazuo MORI
IEICE TRANSACTIONS on Communications
Publication Date: 2018/05/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
IEEE 802.11, TCP, delayed ACK, multi-hop networks, throughput and delay analysis, MAC,
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This paper aims to establish expressions for IEEE 802.11 string-topology multi-hop networks with transmission control protocol (TCP) traffic flow. The relationship between the throughput and transport-layer function in string-topology multi-hop network is investigated. From the investigations, we obtain an analysis policy that the TCP throughput under the TCP functions is obtained by deriving the throughput of the network with simplified into two asymmetric user datagram protocol flows. To express the asymmetry, analytical expressions in medium access control-, network-, and transport layers are obtained based on the airtime expression. The expressions of the network layer and those of transport layer are linked using the “delayed ACK constraint,” which is a new concept for TCP analysis. The analytical predictions agree well with the simulation results, which prove the validity of the obtained analytical expressions and the analysis policy in this paper.