Abstract
A Spectrum Efficient Self-Admission Framework for Coexisting IEEE 802.15.4 Networks under Heterogeneous Traffics
Highlights
Many IEEE 802.15.4-based [1] networks, which communicate over the 2.4 GHz industrial, scientific, and medical (ISM) band, have been developed recently [2,3,4]
The incoming wireless personal area networks (WPANs) sensed the channel for a time equal to the largest beacon interval, and obtained the time offset for each beacon, which cannot meet the requirement of low power consumption of IEEE 802.15.4 standard
We propose a modified hard core point process (HCPP) called time-space-hard core point process (TS-HCPP) to model the renewal carrier sense multiple access (CSMA)-based self-admission process of star-connected networks (SCNs), which evaluates the density of simultaneously active SCNs
Summary
Many IEEE 802.15.4-based [1] networks, which communicate over the 2.4 GHz industrial, scientific, and medical (ISM) band, have been developed recently [2,3,4]. It is challengeable to design a spectrum efficient access mechanism and propose a method to model the coexisting network, which are suitable for the coexisting WPANs. In this paper, we focus on the scenario where heterogeneous beacon-enabled star-connected networks (SCNs) coexist in the multi-channel environment. We develop a renewal CSMA-based self-admission framework to improve spectral efficiency of coexisting IEEE 802.15.4-based networks under heterogeneous traffics in the multi-channel environment. The proposed framework includes three parts: the renewal CSMA-based self-admission access mechanism for maximizing the time and frequency domain utilization, the time-space-HCPP (TS-HCPP) to abstract the renewal CSMA-based self-admission access process of coexisting IEEE 802.15.4-based networks in the multi-channel environment, and the optimization of the combination of access parameters (i.e., the expectation of back-off value) to meet the service rate requirements of heterogeneous traffics.
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