Interference-aware power control for Multi-Radio Multi-Channel wireless mesh networks

Abstract

Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in WMNs. In this paper, we present a dynamic power control for MRMC WMNs. First, WMN is represented as a set of disjoint Unified Channel Graphs (UCGs). Second, each radio assigned to a unique UCG adjusts the transmission power locally using predicted interference states among different adjacent UCGs. A new power selection MRMC unification protocol (PMMUP) is proposed that coordinates local power optimizations at the radios of a node. The throughput and energy performance of the proposed method is investigated through simulations.

Joint queue-perturbed and weakly coupled power control for wireless backbone networks

“…Multiple radio configurations present additional power control challenges (Zhu et al, 2008). Recent research attempts have addressed the power control problems in wireless MRMC configurations (Chen et al, 2007;Olwal et al, 2009a;2009b;2009c). For instance, an energy-efficient Power selection Multi-radio Multi-channel Unification Protocol (PMMUP) has been proposed at the link layer to coordinate independent operations of multiple radios operating in separate wireless channels (Olwal et al, 2009a;2009b;2009c).…”

Optimal Control of Transmission Power Management in Wireless Backbone Mesh Networks

“…This chapter will consequently investigate the problem of energy-inefficient TPM whereby nodes whose queue loads and battery power levels are below predefined thresholds are allowed to doze or otherwise participate voluntarily in the network. In particular, a TPM scheme based on singular perturbation in which queues on different or same channels evolve at different time-scales compared to the speed of transmission energy depletions at the multiple radios, is proposed (Olwal et al, 2010a). The new TPM scheme is also adaptive to the non orthogonal multi-channel problems caused by the diverse wireless channel fading.…”

“…2. It is noted that at the sender (and, respectively, the receiver), packets from a virtual MAC protocol layer termed as the PMMUP (respectively, multiple queues) are striped (respectively, resequenced) into multiple queues (respectively, PMMUP queues) (Olwal et al, 2009b;2010a). Queues can be assumed to control the rates of the input packets to the finite-sized buffers.…”

“…Let the packet arrival and the energy-charging/discharging process at each interface in time step 1 n + be independent of the chain ( ) Xn . Arrivals are assumed to occur at the end of the time step so that new arrivals cannot depart in the same time step that they arrive (Olwal et al, 2010a). represents the transition probability of the ith energy level and the jth buffer level from state at n to state at n+1.…”

“…Highly energy-depleted networks result in poor network connectivity. Therefore, one can model the wireless cross-channel interference (interaction) as a weakly-coupled system (Olwal et al, 2010a). Each transmitter-receiver pair (user) operating on a particular channel (i.e., UCG) adjusts its transmission power dynamically, based on a sufficiently small positive parameter denoted as ε w .…”