ENCODE: an Efficient Framework for using Network Coding in Multi-hop Wireless Networks

Document Type : Original Article

Author

Computer Engineering Department, Imam Khomeini International University, Qazvin, Iran.

Abstract

Network coding is all about combining a variety of packets and forwarding as much packets as possible in each transmission operation. The network coding technique improves the throughput efficiency of multi-hop wireless networks by taking advantage of the broadcast nature of wireless channels. Most previous studies in wireless multi-hop networks, were focused on improving network coding gain as the most important parameter, while if some decision rules in the network nodes were modified, the overall performance of network coding technique will improve. In this paper the two aforementioned approaches, To Overhear or Not to Overhear and To Send or Not to send were combined together to propose a new efficient framework. In particular, all network nodes when act in the coder role, use the To Send or Not to Send decision rule and when they operate in the decoder role, use the To Overhear or Not to Overhear decision rule. We called this framework ENCODE and we compared it with COPE as the reference framework in wireless multi-hop networks.

Keywords