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Mobile ad hoc network-based collaborative caching system

A mobile ad hoc network and mobile ad hoc technology, applied in network topology, network traffic/resource management, advanced technology, etc., can solve unrealistic problems, wired network technology is no longer applicable to MANET network, etc., to reduce energy consumption , Improve data throughput and reduce query latency

Inactive Publication Date: 2018-10-02
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although cooperative caching and proxy technologies are widely used in wired networks, due to mobility and limited resources, technologies suitable for wired networks are no longer suitable for MANET networks
Most cooperative caches in the Web environment will set up a fixed topology, but in MANET due to the mobility of nodes, this is unrealistic

Method used

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  • Mobile ad hoc network-based collaborative caching system
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specific Embodiment

[0035] Such as figure 1 As shown, a part of an ad hoc network is shown, some of which have mobile nodes with external interfaces similar to those in satellite networks to connect to other networks. These interfaces can be used as gateways, allowing other nodes to communicate with external networks. The data center can reside inside or outside MANET, and the mobile node can read data from the data server.

[0036] In the MANET network, when a node sends a data request, it will generally be transmitted to the data center through a multi-hop method, and the data center will send back the required data packets. AODV, destination sequenced distance routing vector algorithm (DSDV, Destination Sequenced Distance) Vector) are two low-level routing protocols applicable to MANET networks. They can find the best path to the destination node at the routing layer to minimize bandwidth loss and access delay.

[0037] The Adaptive cache placement strategy uses the Adaptive algorithm, which is de...

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Abstract

The invention discloses a mobile ad hoc network-based collaborative caching system. Caches are a common technology for improving data access efficiency. A collaborative cache technology realizes the sharing of cache data among a plurality of nodes and explores the potential of the cache technology. Caches in a mobile ad hoc network confront some basic problems, namely, cache placement, cache discovery and cache replacement. According to the system of the invention, a more efficient adaptive cache placement strategy is provided according to the advantages of two basic caches and on the basis ofthe dynamic changes of the ad hoc network environment; since ad hoc network resources are limited, an existing COOP cache discovery strategy adopts a core node concept, so that an improved E-COOP strategy and a corresponding E-COOP cache replacement strategy are provided; and the adaptive cache placement strategy is matched with the improved E-COOP cache discovery and replacement strategy, and therefore, the system of the invention has significant advantages in query delay, energy loss, data throughput and the like. The system of the invention is applicable to a network environment where no infrastructure is erected, such as a disaster-stricken area, a battlefield and other special environments.

Description

Technical field [0001] The invention belongs to the field of wireless communication data access, and in particular relates to a cooperative caching system based on a mobile ad hoc network. Background technique [0002] With the advent of the information age, wireless computing and mobile communication technologies are becoming more and more popular. From the development of cellular wireless communication networks to mobile communication technologies such as home wireless networks, Bluetooth, and wireless local area networks, the communication between people is more agile and people's lives become more colorful. [0003] With the continuous development and progress of science and technology, the requirements for mobile communication technology are getting higher and higher. At present, there are two different mobile network configuration methods: one is a mobile network that requires infrastructure support. For example, when we use mobile phones, The connected telecommunications op...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W28/14H04W40/10H04W40/20H04W84/18
CPCH04W28/0289H04W28/14H04W40/10H04W40/20H04W84/18Y02D30/70
Inventor 潘沛生蒋泉
Owner NANJING UNIV OF POSTS & TELECOMM
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