Resource optimization method for reducing power consumption of broadband access network

Abstract

The invention discloses a resource optimization method for reducing power consumption of a broadband access network, comprising the following steps of: constructing an effective dynamic spectrum management module of energy, and introducing restrain factors for inhibiting users which are greedy to load bit numbers and have better performances, so as to obtain an optimization module; then utilizing a duality theory and introducing a Lagrange variable to obtain a Lagrange duality module of the optimization module; then constructing a price table for quantifying a compensation relation of bit number loading of different users to obtain the restrain factors; and finally, obtaining the minimum total signal power capable of meeting low limit restriction conditions according to the restrain factors. The resource optimization method provided by the invention has the advantages that: the appropriate restrain factors are selected only by utilizing a transmission speed of target data and a line performance, without participating in an iteration process, so that the complexity of the operation is greatly reduced; meanwhile, the power consumption of the method is very close to that of an effective frequency spectrum balance algorithm of the energy, so that an energy-saving and emission-reducing target of green communication is met and the method has better realizability.

Description

technical field [0001] The invention relates to a resource optimization technology in the field of green communication, in particular to a resource optimization method for reducing power consumption of a broadband access network. Background technique [0002] In recent years, realizing energy conservation and emission reduction in the communication industry and promoting the rapid development of the green communication industry has become a goal of global communication development. Recent statistics from the International Energy Organization show that from 1973 to 2006, global energy consumption and carbon dioxide emissions increased by as high as 73% and 78% respectively. Excessive consumption of energy and massive emissions of greenhouse gases have caused a series of problems that cannot be ignored. Therefore, reducing energy consumption and protecting the environment has become an important task for all human beings. Faced with this increasingly serious practical proble...

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Problems solved by technology

[0006] An Iterative Water-Filling (IWF, Iterative Water-Filling) algorithm proposed in the article "Distributed Multiuser Power Control for Digital Subscriber Lines" (Distributed Multiuser Power Control in DSL) published by John M.Cioffi et al in 2002 is The earliest dynamic spectrum management method related to power control. In this algorithm, users do not need to exchange any information, and load the power of each subcarrier completely autonomously until the target rate is reached. In this case, the system structure is simple. It is used for The channel overhead of the control is small, but on the one hand, in the system with the near-far effect, the line rate with poor performance can only reach a small value, so that it cannot meet the needs of many services; on the other hand, it belongs to The rate maximization method that directly reduces the upper limit of the power constraint is not an energy efficient algorithm from the perspective of the optimization model

With the increasing popularity of green communication standards, it is necessary to d

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