Packet Interference and Aggregated Throughput of Bluetooth Piconets in a Ubiquitous Network

摘要

In a ubiquitous environment, various sensors and wireless devices communicate with each other. Recently, the number of wireless devices using Bluetooth technology operating in the unlicensed 2.4GHz ISM band is increasing rapidly. Interference among communicating devices sharing the ISM band can cause significant throughput degradation. In this paper, we present an analytical model of packet interference with multi-path fading channel in a cluster of piconets. Through analysis, we obtain the packet collision probability and aggregated throughput assuming capture effect. Numerical examples are given to demonstrate the effect of various parameters such as capture ratio, Rice factor and cluster size on the system performance.