Dynamic topology control in multi-radio multichannel wireless system

Abstract

Dynamic topology control in multi-hop wireless networks is a focus received much interest in the research society. In this our development, explore the joint power control, channel assignment, and radio interface selection for dynamic provisioning of link bandwidth in infrastructure multi-radio multichannel wireless networks in occurrence of channel variability and external interference. To characterize the logical relationship between spatial contention constraints and transmit power, originate the joint power control and radio-channel assignment as a generalized disjunctive programming problem. The generalized Benders decomposition technique is applied for decomposing the radio-channel assignment (combinatorial conditions) and network resource allocation (continuous conditions) so that the problem can be solved efficiently. In this algorithm is assured to converge to the optimal solution within a finite number of iterations. These schemes in providing reducing outage, packet failure possibility and larger nosiness margin.