The Design of Network Formation and Maintenance Mechanism in IEEE 802.15.4e Network Topology

• Main Authors: CHEN, PO-HUNG, 陳柏宏
• Other Authors: 吳和庭
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/quv4p2

碩士 === 國立臺北科技大學 === 資訊工程系研究所 === 105 === In IEEE 802.15.4e network, a new joining node is operated at the full energy mode until it receives at least one valid Enhanced Beacon (EB). The node will then change to power saving mode. The network formulation and maintenance process is not specified in IEEE 802.15.4e standard. In this paper, we propose network formation mechanism, followed by the mainte-nance mechanism separately for IEEE 802.15.4e network topology according to a pre-setting time. The network formation time is re-duced by decreasing the slotframe size. During the network maintenance mode, the Distance-2 algorithm to employed to reduce the occurrence of EB collision. Furthermore, channel quality and nodal density estimation mechanisms are in-corporated to regulate EB sending period. Simulation results reveal that network formation efficiency and network maintenance reliability are improved simultaneously.