Mobility State Cumulative Weighted Routing Method in High Dynamic Environment
A technology with high dynamic environment and mobile state, applied in the direction of electrical components, wireless communication, network topology, etc., can solve the problems of disconnection of communication links, increased packet loss rate, loss of data packets, etc.
Active Publication Date: 2017-03-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
However, due to the high degree of movement of nodes in a highly dynamic environment and drastic topology changes, the communication link may be disconnected frequently, resulting in the loss of data packets and an increase in the packet loss rate.
The inability to deal with the problem of frequent link failures caused by the link lifetime is the main reason why the "minimum number of hops" criterion cannot be applied to high-speed mobile networks in the air
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Embodiment Construction
[0027] 1. Realize the memorability model
[0028] The research and perfection of many network protocols depend on a large number of simulations. Simulation needs to simulate the motion of nodes, so the concept of mobile model is proposed. The essence of the mobile model is to express the movement mode of the node through the statistical point of view, including the change of node position, speed and direction. In different application occasions, nodes in Ad Hoc networks show different mobility characteristics, and different node mobility models have different effects on the performance evaluation of network protocols. The performance of the same algorithm under different network mobility models may vary widely. Therefore, in order to achieve the best network design performance, when studying network protocols and network design, it is necessary to establish a mobility model suitable for a certain application scenario. . In addition, in Ad-hoc Networks, node movement is regu...
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The invention provides a routing method for accumulation weighing of movement states in a highly dynamic environment. According to the invention, a memorable model is employed for simulation for reducing influence on simulation performance by randomness of node movement. The method includes a steps I of selecting the memorable model adjacent to the highly dynamic environment for simulating node movement; a step II of utilizing a movement predication method for calculating lifetime of a link between two adjacent nodes whose distance is no greater than a valid spread range at any time and thus deemed as in connection; a step III of optimizing the link lifetimeby utilizing a state accumulation weighing method and determining the lifetime of a whole path by utilizing the optimized lifetime of the link between said two nodes, which means the routing lifetime is determined by the shortest link service lifetime of the two adjacent nodes on the path; and a step IV of improving a DSR routing protocol by utilizing the optimized link lifetime.
Description
technical field [0001] The invention is suitable for high dynamic environments, relates to an improved DSR routing method using link state prediction mechanism and moving state accumulative weighting, and belongs to the field of wireless Ad Hoc network and communication routing protocol. Background technique [0002] Ad Hoc network is a wireless mobile communication network without fixed infrastructure. Nodes can form a network at any time according to needs. When nodes cannot communicate directly due to communication distance and other issues, other nodes can relay to realize emergency communication. The tactical Internet based on Ad Hoc network technology plays a very important role in the battlefield communication system. At present, advanced cruise missiles, anti-aircraft missiles, fighter jets, unmanned reconnaissance aircraft, etc. can fly at speeds of Mach 3-4. In the future, flying objects using next-generation supersonic combustion ramjet engines will be able to fly...
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IPC IPC(8): H04W24/06H04W40/02H04W40/24H04W84/18
CPCH04W24/06H04W40/02H04W40/242H04W84/18
Inventor 窦丽华段程浩陈杰邓方张哲敏方浩甘明刚李伟杰高旬
Owner BEIJING INSTITUTE OF TECHNOLOGYGY