kumoh national institute of technology
Networked Systems Lab.

N. B. Long and D.-S. Kim, "TDMA-Based Efficient Cooperative Relaying Selection Scheme in Multi-hop Wireless Networks", Computer Standards & Interfaces (IF: 1.465, ISSN: 0920-5489), vol. 53, pp. 39-47, 2017. (N1 & N2)
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Date : 2017-02-27
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This paper proposes and analyzes an efficient cooperative relaying selection scheme (eCoRSS) based on time division multiple access (TDMA) in multi-hop wireless networks (MWNs). In TDMA, each user shares the same frequency channel and is assigned to a different time slot. However, during a user's own time slot, if there is no forwarded packet in its queue, that time slot is wasted. eCoRSS uses idle neighbors between a source node and a relay node to serve as assistant nodes for the relay node if those idle neighbors receives packets from the source node successfully. As a result, multiple packets can be forwarded to a sink during one time slot without increasing the delay time. Moreover, since the proposed scheme is being considered in a mobile network, after calculating the link signal-to-noise ratio (SNR) values from node to node by a source node, eCoRSS defines a dynamic SNR threshold to compare with the node-to-node SNRs and decide which node qualifies for an assistant node. The simulation results demonstrate that eCoRSS significantly outperforms the previous scheme in terms of throughput, end-to-end delay, and energy consumption.

Available online: https://www.sciencedirect.com/science/article/abs/pii/S0920548917300697