An Opportunistic Network Data Transmission Method

A technology of network data transmission and opportunity, applied in the direction of digital transmission system, network planning, transmission system, etc., can solve the problem that the routing mode is difficult to obtain better performance, and achieve the effect of convenient transmission strategy, high-performance transmission, and stable topology structure.

Active Publication Date: 2017-06-23
HUNAN CITY UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0005] However, with the massive popularization of smart handheld devices, some new opportunistic network service models have emerged, such as pocket switched network, mobile social network, and vehicular network. In these application scenarios, mobile devices are used or carried by people, and the movement and data forwarding of nodes are affected by people's awareness, needs and social behaviors. It is difficult to obtain better performance based on the routing mode based on historical encounter data.

Method used

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  • An Opportunistic Network Data Transmission Method
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  • An Opportunistic Network Data Transmission Method

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Embodiment 1

[0045] see figure 1 , an opportunistic network data transmission method, is a kind of opportunistic network composed of portable devices such as mobile phones, notebooks, tablet computers, etc. that people use or carry with wireless communication interfaces. This method can be applied to the following scenarios situation, the method of the present invention is applied to a scenario similar to the following scenario):

[0046] Location-Based Service: Using multiple mobile phones to form a network independently, the same environmental information (sound, image, etc.) can be sensed collaboratively from different angles, reducing the impact of environmental noise and improving the accuracy of positioning.

[0047] Media services: In many large-scale cultural and sports activities (live concerts, celebrations, sports events, etc.), the location of the user has a great influence on the viewing effect, and people sitting in the back row or corners will affect viewing due to limited v...

Embodiment 2

[0089] A kind of opportunistic network data transmission method, carries out data forwarding with Infocom 2006 data set as experimental object, specifically comprises the following steps:

[0090] Step 1: Obtain the key social characteristics of the nodes, and establish the weighted adjacency matrix of the network according to the obtained key social characteristics, specifically:

[0091] 1. Obtain key social characteristics of nodes: In the Infocom 2006 data set, 61 students and researchers participated in the conference, holding iMote devices with Bluetooth; from April 24 to 27, 2006, in Prince Barcelona, ​​Spain The Sasofia Hotel obtained the data set by collecting the contact information between them. It contains two parts: the contact information between the participants and the social characteristics of the participants; 74981 connections;

[0092] Suppose there are n (n is 61) users in the network, and each user has m social features, expressed as f m , each feature ...

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Abstract

The invention provides a data transmission method of an opportunistic network, and relates to the technical field of computer network communication. The method comprises following steps of firstly, obtaining key social features of nodes; establishing a weighted adjacency matrix of the network; secondly, selecting a suitable community division algorithm; dividing the network into communities of suitable scales; then designing optimum relay selection strategies according to community features and graph theories; and finally designing a routing algorithm; and establishing the data transmission system of the mobile opportunistic network. Compared with the traditional method for designing the data transmission strategies of the mobile opportunistic network based on history meeting information, the method has the advantages that the social features of the nodes are selected; the network is unnecessarily operated by an extra period of time; the topological structure established by the method is stable without changing with time; the communities established by the method can reflect the relationships among the nodes more truly; and the data can be transmitted more effectively by the designed routing strategies.

Description

technical field [0001] The invention relates to the technical field of computer network communication, in particular to an opportunistic network data transmission method. Background technique [0002] Opportunistic Network (Opportunistic Network) is a self-organizing network that does not require a complete path between the source node and the target node, and uses the encounter opportunities brought about by node movement to achieve network communication. Because opportunistic networks can handle network splits and are more suitable for actual ad hoc network requirements, they will have a major impact on the future realization of "pervasive computing", and have attracted researchers' close attention in recent years. [0003] However, the characteristics of opportunistic networks (the main characteristics are: node movement, network topology changes, and there may be no end-to-end connections, etc.) determine that opportunistic networks cannot adopt the traditional "end-to-e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04W16/18H04W40/14H04W40/22H04W84/18
CPCH04L45/14H04L45/70H04W16/18H04W40/14H04W40/22H04W84/18Y02D30/70
Inventor 陈卫民崔芳
Owner HUNAN CITY UNIV
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