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A Refined Performance Characterization of Longest-Queue-First Policy in Wireless Networks

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3 Author(s)
Li, B. ; Dept. of Comput. & Inf. Sci. & Eng., Univ. of Florida, Gainesville, FL, USA ; Boyaci, C. ; Xia, Y.

One of the major challenges in wireless networking is how to optimize the link scheduling decisions under interference constraints. Recently, a few algorithms have been introduced to address the problem. However, solving the problem to optimality for general wireless interference models is known to be NP-hard. The research community is currently focusing on finding simpler suboptimal scheduling algorithms and on characterizing the algorithm performance. In this paper, we address the performance of a specific scheduling policy called Longest Queue First (LQF), which has gained significant recognition lately due to its simplicity and high efficiency in empirical studies. There has been a sequence of studies characterizing the guaranteed performance of the LQF schedule, culminating at the construction of the σ-local pooling concept by Joo In this paper, we refine the notion of σ -local pooling and use the refinement to capture a larger region of guaranteed performance.

Published in:

Networking, IEEE/ACM Transactions on  (Volume:19 ,  Issue: 5 )