A mobile self-organized network path selection method based on bandwidth restraint and minimum load

Abstract

The present invention relates to a route choice method of a mobile ad-hoc network based on bandwidth constraint and minimum load, which includes three steps. Firstly, when a node needs to transmit services to another node, the node broadcasts routing request packets; secondly, when receiving a routing request message, an intermediate node compares the addresses of the intermediate node and the destination node; thirdly, when receiving the routing request from the source node, the destination node checks whether the current time is less than the time spent in receiving the routing request within the specified time. In a mobile ad-hoc network, the bandwidth resource is hard to determine due to the dynamic change of topological structures, the energy of the heavily loaded nodes in a network is rapidly depleted due to the unbalanced load distribution, and as a result the connectivity of the network is rapidly weakened, which finally shortens the total survival time of the network; the present invention resolves the problem. The present invention is compared with the existing AODV protocol by using the NS2 simulation tool, and the simulation results show that the BLLM excels the AODV in terms of packet delivery rate, packet loss rate, throughput, etc.

Description

technical field [0001] The invention belongs to the field of mobile networks, in particular to a path selection method for mobile ad hoc networks based on bandwidth constraints and minimum load. Background technique [0002] In recent years, with the increasing popularity of multimedia applications and the commercialization of mobile ad hoc networks, providing quality of service in mobile ad hoc networks has become an unavoidable problem, and service quality assurance has also become an important function that communication systems must support The same is true for mobile ad hoc networks. Quality of service refers to the quality agreement on information transmission between users who send and receive information, and between users and the integrated service network that transmits information. It is a requirement that needs to be met when the network transmits business flows A series of service requirements, generally including: bandwidth, delay, delay jitter, packet loss rat...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a mobile ad hoc network path selection method based on bandwidth constraints and minimum load to select a path with the least load for service transmission on the basis of ensuring the bandwidth required for service provision, thereby ensuring service The fast, efficient and stable transmission in the network makes the overall performance of the network optimal, thus solving the problem of bandwidth resources being difficult to determine due to the dynamic change of the topology in the mobile ad hoc network; on the other hand, for unbalanced load distribution This leads to the rapid depletion of energy in the nodes with heavy loads in the network, which rapidly weakens the connectivity of the network and ultimately shortens the overall survival time of the network.

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