Routing method based on scheduling and link quality in wireless sensor network

Abstract

The invention relates to a routing method based on time slot scheduling mechanism and communication link quality in a wireless sensor network, relating to the wireless sensor network. The invention realizes the wireless sensor network routing technology with high reliability by adopting a cross layer design idea, combining with a full-network time slot scheduling mechanism and bottom layer communication link evaluation, selecting transmission delay and link quality as standards of route selection, introducing a front k optimal route algorithm and selecting one optimal communication route meeting two route selection standards simultaneously. An ISA 100.11a network is taken as an example. A system manager in the ISA 100.11a network is used for carrying out centralized management on mesh topological communication sub-networks. When a route application of source equipment is received, the route algorithm is operated to select one route with optimal communication link quality under the condition of meeting the full-network scheduling requirement; and meanwhile, route information is sent to all nodes on the route for data communication so as to verify the feasibility of the algorithm.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a routing method for wireless sensor networks. Background technique [0002] A sensor network (sensing network) is a computer network consisting of many spatially distributed autonomous devices that use sensors to cooperatively monitor physical or environmental conditions (such as temperature, sound, vibration, pressure, motion, or pollution) at different locations. things). The development of wireless sensor network (WSN) originally originated from military applications such as battlefield monitoring. Today, wireless sensor networks are used in many civilian fields, such as smart buildings, smart homes, and industrial automation. [0003] In the industrial world, if a wired sensor network is used, the cost is high and it is difficult to implement. The introduction of the wireless sensor network solves the problems of difficult industrial field wiring and high ...

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Problems solved by technology

[0005] In view of this, in order to solve the above problems, the present invention provides a wireless sensor network routing method based on scheduling and link quality, which can further reduce or eliminate problems such as packet loss and delay in the data transmission process of wireless sensor networks, Guarantee the reliability of data transmission

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