TY  - JOUR
T1  - LTRE: Lightweight Traffic Redundancy Elimination in Software-Defined Wireless Mesh Networks
AU  - Park, Gwangwoo 
AU  - Kim, Wontae 
AU  - Kim, Joonwoo 
AU  - Pack, Sangheon 
JO  - Journal of KIISE, JOK
PY  - 2017
DA  - 2017/1/14
DO  - 10.5626/JOK.2017.44.9.976
KW  - Wireless mesh network (WMN)
KW  - software-defined networking (SDN)
KW  - lightweight traffic redundancy elimination (LTRE)
KW  - machine learning
KW  - source routing
KW  - cache management
AB  - Wireless mesh network (WMN) is a promising technology for building a cost-effective and easily-deployed wireless networking infrastructure. To efficiently utilize limited radio resources in WMNs, packet transmissions (particularly, redundant packet transmissions) should be carefully managed. We therefore propose a lightweight traffic redundancy elimination (LTRE) scheme to reduce redundant packet transmissions in software-defined wireless mesh networks (SD-WMNs). In LTRE, the controller determines the optimal path of each packet to maximize the amount of traffic reduction. In addition, LTRE employs three novel techniques: 1) machine learning (ML)-based information request, 2) ID-based source routing, and 3) popularity-aware cache update. Simulation results show that LTRE can significantly reduce the traffic overhead by 18.34% to 48.89%.