Wireless sensor network code distribution method with packet loss tolerance and confidentiality protection

Abstract

The invention discloses a wireless sensor network code distribution method with packet loss tolerance and confidentiality protection and belongs to the technical field of wireless sensor network application. The method comprises the steps that (1) byte level comparison is conducted by source nodes on program images to be updated and original program images running on the nodes, and the program image increment to be distributed is obtained; (2) the source nodes conduct pretreatment on the program image increment before distribution; (3) code distribution is conducted by a wireless sensor network; (4) sensor nodes conduct verification and assembly on code distribution, and assemble received data packages which pass verification to be the program image increment; (5) the sensor nodes recompile the original program images running on the sensor nodes to generate new updated program images, and the program images are uploaded. According to the scheme, the method is not high in complexity and easy to operate and implement, adapts to the environment where resources such as the wireless sensor network are limited, and has the packet loss tolerance attribute and confidentiality protection attribute.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor network applications, and in particular relates to a code distribution method for wireless sensor networks with packet loss tolerance and confidentiality protection. Background technique [0002] Wireless sensor networks have broad application prospects in many fields such as national defense and military, agriculture, medical and health, industry, intelligent transportation, etc., and their applications are usually deployed in long-term unattended environments. However, as time goes by, applications on wireless sensor nodes often need to add some functions or fix software problems, which requires online code distribution to all nodes in the entire network. In some cases where the network scale is large or the node deployment environment is harsh, manually programming all nodes will be a very time-consuming, labor-intensive or even impossible task. Therefore, in Wireless Sensor Networks (...

AI Technical Summary

Problems solved by technology

However, the existing solutions generally have the problem of high method complexity and cannot be implemented in resource-constrained wireless sensor networks.

In addition, all existing solutions basically do not consider the communication characteristics of wireless sensors that are prone to packet loss, nor do they consider the confidentiality requirements of the code to be distributed.

Images