On Combining Shortest-Path and Back-Pressure Routing Over Multihop Wireless Networks

Abstract—Back-pressure based algorithms based on the algorithm by Tassiulas and Ephremides have recently received much attention for jointly routing and scheduling over multihop wireless networks. However a significant weakness of this approach has been in routing, because the traditional back-pressure algorithm explores and exploits all feasible paths between each source and destination. While this extensive exploration is essential in order to maintain stability when the network is heavily loaded, under light or moderate loads, packets may be sent over unnecessarily long routes and the algorithm could be very inefficient in terms of end-to-end delay and routing convergence times. This paper proposes new routing/scheduling back-pressure algorithms that not only guarantees network stability (throughput optimality), but also adaptively selects a set of optimal routes based on shortest-path information in order to minimize average path-lengths between each source and destination pair...

• Type: Conference
• Year: 2009
• Where: INFOCOM
• Authors: Lei Ying, Sanjay Shakkottai, Aneesh Reddy
• Keywords: Algorithm, Communications, End-to-end Packet Delays, INFOCOM 2009, Traditional Back-pressure Algorithm