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Segmented adaptive multi-path routing mechanism having topology sensing capability

A perception capability and multi-path technology, applied in the communication field, can solve problems such as end-to-end reliability degradation

Inactive Publication Date: 2009-07-15
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] The purpose of the present invention is based on the existing single-path routing protocol, aiming at the situation that the single-path routing protocol often breaks in time-varying channels and motion scenarios, resulting in reduced end-to-end reliability, to provide an automatic routing protocol in an Adhoc network. Establishment Method Adapting to Multipath Routing Protocol

Method used

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  • Segmented adaptive multi-path routing mechanism having topology sensing capability
  • Segmented adaptive multi-path routing mechanism having topology sensing capability
  • Segmented adaptive multi-path routing mechanism having topology sensing capability

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[0026] The present invention will be further described below in conjunction with examples, but these examples should not be construed as limiting the present invention.

[0027] Step 1: Determine Link Quality and Maximum Number of Parallel Paths in Multipath Section

[0028] Links in the Ad hoc network are due to the mobility of nodes and the impact of multipath effects and interference, and the quality of the link changes significantly with time. In the present invention, the combination of real-time monitoring link packet delivery rate and historical record data of packet delivery rate is adopted. way to measure link quality. Let PDRM represent the currently measured link packet delivery rate, and PDRH represent the historical data of the link packet delivery rate saved by the node. The calculated current link quality Q of the link is expressed by formula (1):

[0029] Q=0.1×PDR M +0.9×PDR H (1)

[0030] PDR H It is the statistical average value of the...

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Abstract

The invention provides a self-adapting multi-path routing agreement based on path segmenting that is used for transmitting data package of wireless self-organize network efficiently. The agreement includes steps as follows: A) judging a link state by a note according with decided strategy; B) self-adapting selecting a delay node according with network topology state; C) establishing multi-path routing of path segmenting. The agreement can ensure successful probability for transmitting Ad Hoc network data package efficiently and increase network reliability.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a wireless self-organizing network, that is, an Ad hoc network. Specifically, a multi-path routing mechanism that can adapt to topology changes is proposed. During the routing establishment process, the node can have a certain awareness of the network topology according to the routing control information, and establish a segmented self-adaptive multi-path route. Each segment of the path can include a single path or multiple paths. Background technique [0002] Ad hoc network is a temporary autonomous wireless system composed of stationary or mobile nodes. It does not rely on the existing network infrastructure, and relies on the mutual cooperation between nodes to complete the network interconnection between nodes. Ad hoc networks are mainly used in the military, emergency occasions and temporary occasions where wiring is not easy. At present, the Ad hoc network is gradual...

Claims

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Application Information

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IPC IPC(8): H04W84/18H04W74/08
Inventor 武穆清徐春秀甄岩梁绍芳王彬魏璐璐魏宇欣吴大鹏阎啸天苗建松郑凤
Owner BEIJING UNIV OF POSTS & TELECOMM
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