An Energy Effective Opportunistic Routing Mechanism for BLE Mesh
Weikun Cao, Yinong Zhang, Weiwei Xia, Da Jun Sun, Feng Yan, Lianfeng Shen, Yingbin Gao · 2021 13th International Conference on Wireless Communications and Signal Processing (WCSP) · 2021
Bluetooth Low Energy (BLE) mesh as an improved network technique boosts the using of Bluetooth in daily life. However, few study investigates the routing mechanism for BLE Mesh, and the managed-flood-based routing mechanism released by Bluetooth Special Interest Group (SIG) will cause amounts of energy waste. So, it is quite necessary to explore the routing mechanism which is suitable for BLE Mesh. In BLE Mesh, the nodes have the characteristics of high mobility, limited power and short radio range. In terms of these characteristics, an energy effective opportunistic routing mechanism in BLE Mesh (BLE-EEOR) is proposed consisting of candidates set selection algorithm and the priority ranking algorithm of the candidates. A candidates set selection algorithm based on the geographical information and the packet delivery probability (GPCSSA) is introduced to obtain an appropriate candidates set. Besides, a priority ranking algorithm based on Markov chains (MCPA) is introduced to sort the transmitting order of the candidates. Based on GPCSSA and MCPA, BLE-EEOR will select the node with the minimum average transmitting energy consumption to forward the packets at each hop until the destination node has received the packets. The performance of BLE-EEOR is compared with other routing algorithms, and the results show that BLE-EEOR can save significant energy on average which will prolong the time to live of BLE Mesh network.