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Optimizing method of aodv routing protocol based on distance estimation

A routing protocol and optimization method technology, applied in the field of wireless communication, can solve problems such as reducing the average delay of data transmission, unbalanced energy consumption, and prolonging the network life cycle.

Inactive Publication Date: 2020-04-10
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0005] The purpose of the present invention is to propose a method based on distance estimation for the routing overhead problem caused by the non-directional broadcast RREP in the routing establishment process of the AODV protocol and the energy consumption imbalance problem caused by some nodes being frequently selected as routing intermediate nodes. The AODV routing protocol optimization method optimizes the route establishment process. Its consideration of distance is no longer based only on the route hops from the source node to the destination node, but by using the received signal power that is directly related to the distance to optimize the route establishment process. A distributed and centralized routing protocol mixed to achieve the purpose of reducing routing overhead, reducing the average delay of data transmission, and prolonging the life cycle of the network

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  • Optimizing method of aodv routing protocol based on distance estimation
  • Optimizing method of aodv routing protocol based on distance estimation
  • Optimizing method of aodv routing protocol based on distance estimation

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The scene of the specific embodiment of the simulation is to randomly arrange 50 nodes within the range of 1000m×100m, the maximum moving speed of the nodes is 20m / s, and the residence time at each location is set to 0, 30, 60, 90, 120, 300 seconds, a dwell time of 0 seconds means that the node is always moving, and a dwell time of 300 seconds means that the node does not move. Pause time reflects the frequency of network topology changes, the longer the pause time, the worse the node mobility. There are up to 30 connections between nodes, and each CBR source sends 2 CBR packets per second at a certain moment. The following only introduces the implementation part that is different from traditional AODV.

[0027] Step 1) The middle-distance detection packet D-HELLO contains the destination node address and the broadcast ID ent...

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Abstract

The invention discloses an AODV routing protocol optimization method based on distance estimation. In view of the problem that a non-directional broadcast RREP and some nodes are frequently selected as routing middle nodes in an AODV protocol routing establishment process, the invention provides the routing protocol optimization method based on distance estimation. A distance entry from a previous hop node to a destination node is added in a routing request packet RREQ, and a distance comparison mechanism from the nodes to the destination node is established to reduce the routing cost at least, reduce the average delay of data transmission and prolong the life cycle of the network.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an AODV routing protocol optimization method based on distance estimation. Background technique [0002] Wireless sensor network (WSN) is an application-oriented research field, and its theoretical and practical technology research is related to the specific application environment. Compared with the traditional network, it has the characteristics of random distribution of nodes, network self-organization, dynamic topology, and limited node energy. In order to realize the long-term and efficient transmission of data in the network, a routing protocol specially suitable for this kind of self-organizing network has appeared. The analysis and comparison of AODV, DSR and TORA, AODV (Ad hoc On-demand Distance Vector) is a typical self-organizing by A distance vector routing protocol is required. The results show that the AODV protocol performs better in terms of average energy ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/14H04W40/20H04W40/22H04W40/24
CPCH04W40/14H04W40/20H04W40/22H04W40/246Y02D30/70
Inventor 商飞余闯叶娟娟陈威铮孔德仁王芳徐春东
Owner NANJING UNIV OF SCI & TECH
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