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A reduced-power channel reuse scheme for wireless packet cellular networks

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3 Author(s)
Li, J. ; Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA ; Shroff, N.B. ; Chong, E.K.P.

We present a novel reduced-power channel reuse scheme to improve the spectrum efficiency in wireless packet cellular networks. The basic idea is to reduce intercellular interference and improve the capture probability by an a priori assignment of power levels of channels used in different cells. We formulate and solve an optimal channel-selection problem for our scheme. We find that the optimal policy is in a form of bang-bang control. We illustrate our channel-selection solution by a case study with uniform fairness constraint. We evaluate, via numerical analysis and simulation, both throughput and delay of the new scheme, and compare them with other schemes. We find that our scheme can achieve significant performance improvements, in terms of both the maximum throughput and throughput-delay tradeoff, over a wide range of capture ratio values

Published in:

Networking, IEEE/ACM Transactions on  (Volume:7 ,  Issue: 6 )