Implementation of a protocol for cooperative packet recovery over hybrid networks

Abstract

In this work, we consider the challenge of delivering high-quality multimedia content to users concentrated in a small physical location, e.g., a sports stadium in which fans may view extra video content on their mobile devices. Because each user experiences a different wireless channel condition, it is difficult to deliver this content efficiently to all users. A hybrid network architecture has been proposed that uses a peer to peer exchange of packets over an assistant network to supplement the primary infrastructure network in this scenario. We describe an implementation of this popular technique which may be used in a variety of network environments and applications. In trials on a wireless networking testbed, using WiMAX as the primary network and WiFi as an assistant network, we find that our implementation can recover up to 92% of packets lost over the primary network.

An Efficient Hierarchical Error Recovery Method for Hybrid Broadcast/Communication Networks

“…Works by Fund et al [7] and Sinkar et al [8] show that mobile terminals make a local network in the local area and exchange the source packets when the error occurs. These researches are based on the assumption that different errors will occur in different terminals.…”