On Capacity and Delay of Multichannel Wireless Networks With Infrastructure Support
Abstract: In this paper, we propose a novel multichannel network with infrastructure support, which is called an MC MC-IS network, that has not been studied in the literature. To the best of our knowledge, we are the first to study such an MC MC-IS network. Our proposed MC MC-IS IS network has a number of advantages over three existing conventional networks: a single-channel single channel wireless ad hoc network networ (called an SC-AH AH network), a multichannel wireless ad hoc network (called an MC-AH MC network), and a single-channel channel network with infrastructure support (called an SCSC IS network). In particular, the network capacity of our proposed MC MC-IS network is √n log n times higher than that of an SC-AH SC AH network and an MC MC-AH network and the same as that of an SC SC-IS IS network, where n is the number of nodes in the network. The average delay of our MC-IS MC network is √log n/n times lower than that of an SC-AH AH network and an MC MC-AH AH network and min {CI, m} times lower than the average delay of an SC-IS SC IS network, where CI and m denote the number of channels dedicated for infrastructure communications and the number of interfaces mounted at each infrastructure node, respectively. Our analysis on an MC-IS IS network equipped with omnidirectional antennas has been extended to an MC-IS IS network equipped with directional antennas only, which are named as an MC-IS-DA DA network. We show that an MC-IS-DA MC DA network has an even lower delay of c/(⌊2π/θ⌋ · CI) compared with an SC-IS SC IS network and our MC MC-IS network. For