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Method and device for selecting initial source node in mobile opportunity network traffic offloading

A mobile opportunistic network and traffic offloading technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve the problem of low data transmission efficiency, inability to accurately describe node data transmission capabilities, and inability to effectively determine data transmission capabilities Issues such as the initial source node

Active Publication Date: 2019-10-22
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The above-mentioned importance metrics are mainly used to measure the data transmission capabilities of nodes in networks with relatively stable topologies. However, for mobile opportunistic networks with large topological changes, if the above-mentioned importance metrics are directly applied, it is impossible to accurately describe the nodes’ performance. Therefore, it is impossible to effectively determine the initial source node with strong data transmission capability, which leads to low data transmission efficiency in mobile opportunistic networks

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  • Method and device for selecting initial source node in mobile opportunity network traffic offloading
  • Method and device for selecting initial source node in mobile opportunity network traffic offloading
  • Method and device for selecting initial source node in mobile opportunity network traffic offloading

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[0113] Suppose at t 5 moment, node v 1 to v 2 The distance between is less than R, then the node v 1 and node v 2 Added to the weighted reachable graph, and at node v 1 and node v 2 Add a bidirectional edge between, assuming node v 2 with v 3 The distance between is greater than R, then no node v is added 3 ; if at t 5 time after t 6 moment, node v 2 with v 3 The distance between is less than R, then the node v 3 is also added to the weighted reachable graph, and at node v 2 and node v 3 Add a two-way edge between , since in [t 5 ,t 6 ] During the time period, slave node v 1 to v 3 There is a timing path between, therefore, add a slave node v 1 to node v 3 The directed edge of . In this way, until all the nodes in the mobile opportunity network that have temporal paths and instantaneous paths within the preset time period are added to the weighted reachable graph, the preset time period [t 5 ,t 6 ] in the weighted reachability graph that contains timing p...

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Abstract

The embodiment of the invention provides a Method and device for selecting AN initial source node in mobile opportunity network traffic offloading and electronic equipment. The method comprises the steps: obtaining a link change relation among all nodes in the mobile opportunity network in a preset time period, and generating a weighted reachable graph according to the link change relation; dynamically allocating the resource value of each node according to a preset resource value allocation strategy based on the weighted reachability graph; and when the resource value of each node reaches a stable state, selecting an initial source node according to the size relationship of the resource value of each node. By applying the embodiment of the invention, in the process of selecting the initial source node, the link change relationship of the mobile opportunity network is considered, so that even if the topological structure of the mobile opportunity network is greatly changed, the node with strong transmission capability in the mobile opportunity network can be more effectively identified as the initial source node, and the data transmission efficiency is improved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method, device and electronic equipment for selecting an initial source node in mobile opportunistic network traffic unloading. Background technique [0002] Users usually use the mobile network to obtain various network resources, such as news information, music resources, or video resources, etc., which makes the traffic pressure of the mobile network more and more serious. At present, in some traffic offloading schemes, some data of the mobile network can be offloaded to other networks, such as opportunistic networks, WIFI (Wireless-Fidelity, wireless broadband) and the like for transmission, so as to reduce the traffic pressure of the mobile network. [0003] In the traffic offloading scheme, for example: when using an opportunistic network for transmission, that is, in a mobile opportunistic network, when performing traffic offloading, it is usually necessary to select ...

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Application Information

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IPC IPC(8): H04W28/08H04W28/02
CPCH04W28/021H04W28/08
Inventor 时岩陈山枝乔利强
Owner BEIJING UNIV OF POSTS & TELECOMM
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