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Under regular or heavy traffic conditions, contention-free mechanisms such as time division multiple access (TDMA) are considered as under layer mechanisms in wireless networks. In TDMA mechanisms, links are scheduled by assigning different time slots for links that interfere each other. In this paper, we propose a self-organizing link scheduling mechanism for single-hop wireless networks considering...
Cross-layer design has been proposed to reduce the energy consumption in wireless sensor networks (WSN). The problem can be modeled as a hybrid non-linear optimization problem for integer constrains involving, which is a challenging task. As the number of nodes increases, the computational complexity grows exponentially. Constrained by computational complexity, previous work by other researchers mainly...
In this paper, we consider the energy-efficient resource allocation that minimizes a general cost function of average user powers in wireless networks. A class of so-called ??-fair cost functions is derived to balance the tradeoff between efficiency and fairness in energy-efficient designs. With these novel cost functions, optimal resource allocation schemes are developed for fading time-division...
Efficient cluster schemes play an important role in the self-organizing ad hoc wireless networks. This paper surveys and compares recent cluster schemes. We classify some of these schemes into the 3 major categories of (1) energy efficient schemes, (2) K-tree schemes, and (3) management schemes. Issues in these schemes are considered: overlaps between the clusters; clusterhead (CH) not at the center...
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