Topology control method for reducing inter-link interference

A topology control and topology technology, applied in the direction of network topology, advanced technology, electrical components, etc., can solve the problem of unable to provide the underlying topology, unable to guarantee interference, etc., to achieve the effect of reducing interference and reducing node energy consumption

Active Publication Date: 2013-12-11
XIDIAN UNIV
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Problems solved by technology

When studying the channel assignment or scheduling problem based on the underlying topology, it is necessary to consider the interference caused by a pair of nodes to the link that can communicate within the tr

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  • Topology control method for reducing inter-link interference
  • Topology control method for reducing inter-link interference
  • Topology control method for reducing inter-link interference

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Embodiment Construction

[0024] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] refer to figure 1 , the wireless network used in the present invention is composed of n homogeneous nodes distributed in a two-dimensional plane area, assuming that one of the nodes is the central control node o, and the rest are all nodes u in the network except the central control node o. Each node has a unique ID number, and can obtain its own location information through GPS or other positioning technologies. In the network, the wireless channel between each node is an additive Gaussian white noise channel. All nodes communicate with surrounding nodes through omnidirectional antennas, and the maximum transmit power is P max . The transmit power P of all nodes can be continuously adjusted between the minimum and maximum, that is, 0≤P≤P max . The transmission distance corresponding to the transmission power of each node is the...

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Abstract

The invention discloses a topology control method for reducing inter-link interference, which mainly solves the problem that the reduction of the inter-link interference cannot be guaranteed existing in the prior art. The implementation process of the method comprises the following steps: constructing a maximum power topology by a central control node; traversing all edges in an edge set of the maximum power topology by the central control node by taking the interference of the edge as standard, deleting and optimizing the edge set to construct an entire network topology; broadcasting entire network topology information by the central control node to all nodes in a network except for the central control node; determining logic neighbor nodes of all the nodes except for the central control node in the network by the nodes except for the central control node according to the received entire network topology information and adjusting the transmitting powers of the nodes. The topology control method has the advantages that the energy consumption of the node is reduced and the inter-link interference is reduced, and can be used for a wireless sensing network.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a method for constructing a network topology, which can be used in a wireless sensor network. Background technique [0002] A wireless sensor network is a wireless network composed of a group of randomly distributed tiny nodes through self-organization, and each tiny node is composed of sensors, data processing units and communication units. Wireless sensor network integrates sensor, low power consumption, communication and micro-electromechanical technologies, and has the functions of real-time data collection, supervision and control, information sharing and storage management, and is a network communication system full of development potential. [0003] Energy conservation and interference reduction are two important research aspects in wireless sensor networks. In terms of topology control, a lot of research work in recent years has focused on how to design algorithms t...

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Application Information

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IPC IPC(8): H04W24/02H04W52/02H04W84/18
CPCY02D30/70
Inventor 王玺钧盛敏刘梦霞翟道森张琰李建东
Owner XIDIAN UNIV
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