Routing optimization method and system for Bluetooth mesh network with mobile node

Abstract

The invention discloses a routing optimization method of a Bluetooth mesh network with a mobile node. The method comprises the following steps: when judging that a node needs to be forwarded, obtaining a forwarding probability initial value of the node according to an RSSI value in a received data packet; adjusting the forwarding probability initial value according to the neighbor node informationof the node; confirming the adjusted forwarding probability initial value according to the mobile node information of the node to obtain a forwarding probability value; and generating a random value,comparing the obtained node forwarding probability value with the generated random value, if the random value is greater than or equal to the forwarding probability value, performing forwarding operation by the node, and otherwise, not performing forwarding by the node. An original flooding algorithm is improved, and a novel routing method is provided. Redundant forwarding of the nodes in the Bluetooth mesh network is limited by dynamically adjusting the forwarding probability values of the nodes, so that the problems of network delay and data packet loss caused by mobile nodes are solved.

Description

technical field [0001] The invention belongs to the technical field of mesh network wireless communication, and in particular relates to a routing optimization method and system of a bluetooth mesh network with mobile nodes. Background technique [0002] Bluetooth is a short-range wireless communication technology and one of the basic technologies of the Internet of Things. Bluetooth technology mainly includes classic Bluetooth and low-power Bluetooth technology. Low-power Bluetooth technology is widely used in many fields such as medical care, sports and fitness, security systems, and sensor Internet of Things. [0003] In order to solve the problems of short transmission distance and poor networking capability of Bluetooth low energy technology, in July 2017, the Bluetooth SIG issued the first version of the Bluetooth mesh standard specification to achieve global interoperability of the mesh protocol. Mesh is a new network topology of Bluetooth Low Energy. Compared with t...

AI Technical Summary

Problems solved by technology

However, in a network scenario where nodes are densely deployed, flooding broadcasts will bring more redundant information in the network, causing channel collisions and packet loss problems

And when there are mobile nodes participating in the communication in the mesh network, it will aggravate the problem of packet loss and delay in the network

So this limits the scope of application of Bluetooth mesh

Images