Enhanced window increment and adaptive recovery TCP for multi‐hop wireless networks

Abstract

In this Letter, a combined algorithm known as receiver-assisted slow start (RASS) and feedback-assisted recovery (FAR) proposed to address the joint optimisation problems of transmission control protocol (TCP) such as non-optimal initial window (IW) size, slower window growth and spurious window deflation under multi-hop wireless (MHW) networks. The RASS fix the sender's optimum IW size from the receiver's advertised value and replaces the conventional exponential window growth with enhanced window increment mechanism that significantly accelerates the transmission rate. The FAR uses relay router's feedback information to regulate false transmission rate reduction during packet drops. The simulation result reveals that the proposed algorithms had a substantial improvement in throughput and reduction in packet latency over the existing standard New Jersey and non-congestion events algorithms under MHW environment.

Multihop Data Delivery Virtualization for Green Decentralized IoT

“…Multihop transmissions are not addressed adequately in [7] as the congestion control is only conducted at the source node. Jude and Kuppuswami [8] have proposed a scheme in which the initial congestion window size is set based on the advertised window size. This is not suitable for a multihop TCP flow where the intermediate nodes do not advertise window size.…”

“…However, it is difficult to know the reason of a segment loss especially for multihop communications. All these protocols [5][6][7][8][9] do not address the TCP performance drop problem in a multihop wireless IoT environment adequately.…”

“…There have been some studies discussing the transport layer design of multihop wireless networks [5][6][7][8][9][10][11][12][13][14]. Most of the existing approaches [5][6][7][8][9] focus on improving the congestion control of TCP.…”

“…Most of the existing approaches [5][6][7][8][9] focus on improving the congestion control of TCP. These approaches do no address the bandwidth underestimation of TCP in a multihop lossy environment.…”

“…Existing studies also cover the efficient use of wireless resources for the purpose of green IoT networking [15][16][17][18]. All the existing protocols [5][6][7][8][9][10][11][12][13][14][15][16][17][18] do not discuss the performance drop problem of end-to-end retransmission in a multihop distributed wireless IoT environment adequately. This paper focuses on efficient utilization of wireless resources in multihop wireless communications.…”