Design And Implementation Of Bluetooth Mesh Network Routing Protocol Based On Internet Of LAMP

The Bluetooth Mesh network is a multi-to-many,centerless wireless topology network proposed by the Bluetooth organization.BLE broadcast channel is used to transmit data on flooding protocol.The internet of lamp based on BLE Mesh has the characteristics of high compatibility,low cost,and mature technology.However,flooding routing protocol leads a high-latency network when it's used on large-density nodes environment such as lamp networking.Based on Bluetooth Mesh technology,improves the existing wireless Ad hoc network on-demand plane distance vector routing protocol(AODV)by introducing link quality judgment mechanism and link failure prediction mechanism.Design a Low-latency AODV(LD-AODV)routing protocol to find the optimal route and backup route through the link quality judgment mechanism in the route discovery process.The mobile model is introduced to perform link interruption prediction and handover,which improves the overall quality of the route,essentially reduces the existence of flooding messages,avoids network congestion,and reduces the overall network delay.Based on Nordic's nRF52832 Bluetooth chip and protocol stack,this thesis designs and implements the LD-AODV routing protocol and builds a Bluetooth Mesh network for real analysis.According to the analysis results,compared with the routing protocol of Nordic Mesh,the average round-trip time of the network is reduced by more than 30%,and the packet delivery rate is increased by more than 15%,which meets the expected design index.