Interference and Congestion Aware Reservations in Wireless Multi-hop Networks

摘要

Multi-hop wireless networks are dynamically forming networks of radio equipped nodes. Most of the early work has been motivated by scenarios where nodes are mobile, leading to both theoretical results for the capacity of the network [1] and to practical proposals for routing protocols [2]. With the recent deployment of community wireless networks, more specific attention has been given to multi-hop wireless networks composed of both mobile mesh clients and more static mesh routers which form the backbone of the wireless mesh and provide the clients with access to the Internet [3]. In the present paper we consider multi-hop wireless networks that require resources to be reserved across the network; such mechanisms may be needed in both the mobile and static cases. Firstly multimedia applications require different quality of service guarantees. For example a voice application would require low delay and jitter, and video streaming would need bandwidth guarantees. The second use case applies more specifically to the wireless mesh backbone. In this context, different Service Level Agreements (SLAs) can be provided to users in a wireless mesh community network. The network provider would thus need means to ensure that the expected Quality of Service [15] (in terms of average or peak bandwidth) is actually delivered to its subscribers.