Approaching Single-Hop Performance in Multi-Hop Networks: End-To-End Known-Interference Cancellation (E2E-KIC) – Long Version

To improve the efficiency of wireless data communications, new physical-layer transmission methods based on known-interference cancellation (KIC) have been developed. These methods share the common idea that the interference can be cancelled when the content of it is known. Existing work on KIC mainly focuses on single-hop or two-hop networks, with physical-layer network coding (PNC) and full-duplex (FD) communications as typical examples. This paper extends the idea of KIC to general multi-hop networks, and proposes an end-to-end KIC (E2E-KIC) transmission method together with its MAC design. With E2E-KIC, multiple nodes in a flow passing through a few nodes in an arbitrary topology can simultaneously transmit and receive on the same channel. We first present a theoretical analysis on the effectiveness of E2E-KIC in an idealized case. Then, to support E2E-KIC in multi-hop networks with arbitrary topology, we propose an E2E-KIC-supported MAC protocol (E2E-KIC MAC), which is based on an extension of the Request-to-Send/Clear-to-Send (RTS/CTS) mechanism in the IEEE 802.11 MAC. We also analytically analyze the performance of the proposed E2E-KIC MAC in the presence of Lei Guo was the corresponding author for this article. F. Wang, L. Guo, and Q. Song are with the School of Information Science and Engineering, Northeastern University, Shenyang 110819, P. R. China. E-mail: [email protected], [email protected], [email protected] S. Wang is with the Department of Electrical and Electronic Engineering, Imperial College London, SW7 2AZ, United Kingdom. E-mail: [email protected] A. Jamalipour is with the School of Electrical and Information Engineering, University of Sydney, NSW, 2006, Australia. E-mail: [email protected] 1 © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. A condensed version of this paper has been accepted at IEEE Transactions on Vehicular Technology, http://dx.doi.org/10.1109/TVT.2015.2482124