Research on Time Synchronization and Routing Maintenance for Narrowband Ad Hoc Networks

Abstract

Narrowband communication technology has a wide range of applications in the field of Internet of Things (IoT), but in a network with high-dynamic topologies, the direct application of existing time synchronization and routing protocols has problems such as high routing consumption and insufficient dynamic performance. To combine the advantages of narrowband communication and ad hoc peer-to-peer network to build a network with long communication range, low power consumption, low cost and high survivability, a time synchronization and route maintenance method for narrowband ad hoc network is proposed, including: using passive node time synchronization to reduce the time synchronization packets, allocating each time slot with a dominant node to reduce channel conflicts, encoding routing tables to achieve routing synchronization, and dynamic routing and forwarding of broadcast messages based on coverage. Finally, the proposed method is verified on the physical system based on SX1268 and ESP32, and the results prove the rationality and efficiency of the algorithm proposed in this paper.