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Single-path routing method using reusability of spectrum spaces

A path and space technology, applied in the field of single-path routing that utilizes spectral space reusability, can solve the problems of high end-to-end throughput, ignoring spectral space reusability in wireless networks, and inability to achieve, to improve end-to-end Throughput, easy application, simple effect

Inactive Publication Date: 2013-10-09
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the route selection process based on traditional routing protocols still takes the minimum sum of link routing metrics as the path selection criterion, ignoring the spatial reusability of spectrum in wireless networks, so it cannot achieve higher end-to-end throughput

Method used

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  • Single-path routing method using reusability of spectrum spaces
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  • Single-path routing method using reusability of spectrum spaces

Examples

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Embodiment 1

[0028] This embodiment includes the following steps:

[0029] Step 1. Routing metric calculation: In the process of data transmission on a single path, the information flow on a single link includes data packets from the upper source node to the source node and ACK packets from the lower source node to the source node, so the space can be When the two reused links are working simultaneously, the communication of both types of packets must be undisturbed. This can lead to a criterion for judging whether two links are spatially reusable: two nodes on one link are respectively outside the collision domain of all two nodes on the other link.

[0030] Such as figure 1 As shown, for an example to explain this standard, there are five nodes and three links in the figure, and the collision domain of each node is marked with a dotted circle, where the links (A, B) and (C, D) are not spaces Reusable, because nodes A and D are in their respective collision domains, resulting in signal ...

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Abstract

The invention belongs to the technical field of a multi-hop wireless network, and provides a single-path routing method using the reusability of spectrum spaces. The method comprises the steps that whether the spaces of links are reusable or not is judged, the reusability of the spectrum spaces among the links is quantized to obtain the routing metric value of a reusable unit; then modeling is conducted on the routing metric value of the reusable unit; an SASR-MIN algorithm or an SASR-FF algorithm is used for calculating the routing metric value of a path; at last, a destination node finds out a final path used for transmitting a data package and conducts data transmission according to the routing metric value. The reusability of the spaces among the links is considered when the routing metric value of the path is determined, a chosen routing path is made to achieve higher end-to-end throughput, and excess energy consumption is not extra introduced.

Description

technical field [0001] The present invention relates to a method in the field of multi-hop wireless network technology, in particular to a wireless network using spectrum spatial reusability (Spectrum Spatial Reusability, referred to as spatial reusability, or when no ambiguity arises, referred to as Reusability) single-path routing method, which considers the spectral space reusability between links when performing route discovery, and significantly improves the end-to-end throughput of single-path routing at the cost of very low additional energy consumption . Background technique [0002] Limited by unreliable transmission links and limited channel bandwidth, in wireless networks, especially multi-hop wireless networks, in order to achieve high end-to-end throughput, routing issues are very important. [0003] The single-path routing problem is to select a path with the minimum routing metric value from the source node to the destination node for data transmission in a w...

Claims

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Application Information

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IPC IPC(8): H04W40/10
CPCY02D30/70
Inventor 吴帆孟彤陈贵海
Owner SHANGHAI JIAO TONG UNIV
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