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Routing method based on layering geotagging in opportunistic network

A technology of geographic tags and tags, applied in wireless communication, electrical components, etc., can solve problems such as low transmission success rate and high network load, and achieve the effect of reducing overhead and improving message delivery rate

Inactive Publication Date: 2012-10-17
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a routing method based on hierarchical geographic tags under an opportunistic network, aiming to solve the problems of high network load and low transmission success rate in the existing methods

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  • Routing method based on layering geotagging in opportunistic network
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  • Routing method based on layering geotagging in opportunistic network

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] In the practical application of most opportunistic networks, for different regions in the network, there are often differences in the access frequency and access time of nodes, and it often occurs that the access frequency of nodes to some specific regions is much higher than that of other regions. For example, in a wireless sensor network monitoring wild animals, the movement of sensor nodes depends on the animal that carries it, and the animal will stay in the area where its nest is located most of the time. In their study of a typical campus wireless network sample, Balazinska et al. foun...

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Abstract

The invention discloses a routing method based on layering geotagging in an opportunistic network. The routing method comprises the following steps: dividing a network area in accordance with the geographic location so as to generate a plurality of sub-areas; marking each sub-area with a tag vector which represents the geographic location; for each node in the network, establishing and maintaining a tag set that records the node accesses to the sub-area and the access probability of each sub-area according to the sub-area and the tag vector representing the geographic location, and establishing and maintaining a home location table of the node, wherein the home location table is used for recoding the sub-area to which the node in the network belongs; the node carries out information routing with another node within a communication range according to the tag set and the home location table of the node; and another node is called as an encountering node. By transferring the information to a node having an access habit more approximate to an objective node, the submit success rate of the information is increased and the routing efficiency is improved; and meanwhile the expense caused by too many information copies in the network is reduced.

Description

technical field [0001] The invention belongs to the field of computer network communication, and more specifically relates to a routing method based on layered geographic tags under an opportunistic network. Background technique [0002] An opportunistic network is a delay-tolerant network composed of mobile peer-to-peer communication nodes. The main feature is that the network topology is divided into multiple isolated connected areas. There is a continuous end-to-end path. Nodes have non-volatile storage. When transmitting messages, they adopt the "storage-carry-forward" transmission method, and use the encounter opportunities formed by node movement to complete the data transmission until the message is forwarded to the destination node. Opportunistic networks have many typical application scenarios, such as battlefield military networks, self-organizing vehicle networks, pocket switching networks, etc. [0003] Due to the characteristics of the opportunistic network it...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W40/24
Inventor 金海余辰廖小飞包晨诚
Owner HUAZHONG UNIV OF SCI & TECH
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