New graph model for channel assignment in ad hoc wireless networks

A distributed channel assignment control for QoS support in mobile ad hoc networks

“…Each node in a multi-channel domain may switch channels, referred to as an orthogonal channel, but the number of channels considered is not real (see Fig. 2 in [3]). However, some additional precautions are required to manage the selection of the dynamic channel [13].…”

Characterizing Interference Model for Wireless Mesh Networks

“…This paper considers communication between two MRs based on the IEEE 802.11 (e.g., 2.4 Ghz and 5.0 Ghz), and assumes that channel is assigned when data in radio interface is completely received [10][11][12]. And each channel is assigned by gateway MR, which is connected to the Internet.…”

On the Impact of Introducing Advanced Devices into a Cognitive Radio Network

“…We assume a model based on simple graphs, in which constraints forbidding co-channel assignments are placed between pairs of graphs, depending on their distance apart, their SINR requirements, and their transmit powers. We use the interFerence Double Disc (FDD) model, recently proposed by Cheng et al [13]. FDD graphs place two concentric rings about a transmitting device with the first (inner) disc enclosing a radius, r v , in which the signal strength of the transmitted signal is viable, and the second (outer) ring encapsulating an area in which the signal is too weak to use, but strong enough to act as an interference to other receivers, R v .…”

“…[7], [15], [16]. Many methods are possible to determine re-use distances -one of the most recent is due to Cheng et al [13], and this will be discussed in Section III. Heuristics for GC problems have been widely adapted to channel assignment, e.g.…”

“…The direct analogy between channel assignment and GRAPH COLOURING is widely credited to Metzger [12] (e.g. [13], [14]), and this approach remains the dominant model today, e.g. [7], [15], [16].…”