We address the problem of multicell co-channel scheduling in view of mitigating interference in a wireless data network with full spectrum reuse. The centralized joint multicell scheduling optimization problem, based on the complete co-channel gain information, has so far been justly considered impractical due to complexity and real-time cell-to-cell signaling overhead. However, we expose here the following remarkable result for a large network with a standard power control policy: The capacity maximizing joint multicell scheduling problem admits a simple and fully distributed solution! This result is proved analytically for an idealized network. From the constructive proof, we propose a practical algorithm that is shown to achieve near maximum capacity for realistic cases of simulated networks of even small sizes.
Optimal and distributed scheduling for multicell capacity maximization
IEEE Transactions on Wireless Communications, Volume 7, N°1, January 2008
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