| | 講 題 | Automatic Leveling for Power Dissipation in BLE-Based WSN | | | 講 者 | 國立中央大學通訊工程系 Hsiao-Chi Cho, Chih-Lin Hu | | | 日 期 | 2019/09/27 | 長 度 | 00:19:36 | 人 氣 | 71 次 | | | When Bluetooth Low Energy (BLE) technologies are popular in IoT environment, lots of BLE-enabled sensor devices must access Internet by a central controller. Different sensor devices will cause different energy dissipation speeds due to the different sensor positions and distances. Thus, those devices cannot synchronize power drains at the same time between distal and proximal sensors. Current energy leveling techniques are apt to deploy an increasing number of sensors closer to the central sink of data flows to process the increasing amount of data from outer regions, this manner which aims to strike a balance of power consumption and bandwidth utilization. However, this sort of technique induces a considerable increase of sensor devices and cause unscaled cost expense due to sensor deployment in a large application field. This paper proposes an automatic leveling mechanism for power dissipation in BLE-based wireless sensor networks. The mechanism design is to divide the positions of all sensors into M coronas, and the bandwidth of a transmission can be divided into k basins. Sensors in an inner corona use a larger proportion of transmission bandwidth, while data loading in an outer corona is relatively less. Note that the proposed mechanism can differentiate the usages of transmission bandwidth between inner and outer coronas. Then, according to the information of differentiated data load and bandwidth usage, this mechanism can specify different transmission powers and convert the difference into separate transmission distances. Particularly, sensors in an outer corona can consume higher power using a larger wireless radius, and also provide larger wireless coverages. By contrast, the inner circle does not require a wide range of wireless coverage, but requires higher bandwidth to cope with the convergence of incoming data streams from other outer areas. Finally, the simulation results show that adjusting the antenna transmission power and controlling the bandwidth usage can obtain the goal that sensors in inner and outer areas can have similar power consumptions.
| | | 提 供 | TANET台灣網際網路研討會-TANET2019 | | |
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