A Distributed Method for Realizing Intercellular Interference Control and Energy Saving in Cellular Network

An interference control and distributed technology, applied in the distributed field, can solve the problems of central controller burden, unfavorable network expansion, large data volume, etc., and achieve the effect of ensuring fairness

Inactive Publication Date: 2016-05-04
DALIAN UNIV OF TECH
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Problems solved by technology

In this way, there will be a certain delay in the entire network, and the real-time performance cannot be guaranteed. Moreover, when the number of cells in the entire network is large, the amount of data that the central controller needs to calculate will be large, which will cause a great burden on the central controller, and also Not conducive to the expansion of the network

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  • A Distributed Method for Realizing Intercellular Interference Control and Energy Saving in Cellular Network
  • A Distributed Method for Realizing Intercellular Interference Control and Energy Saving in Cellular Network
  • A Distributed Method for Realizing Intercellular Interference Control and Energy Saving in Cellular Network

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[0060] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0061] In a communication system based on Orthogonal Frequency Division Multiple Access (OFDMA for short), the smallest unit that can be allocated to a user is a resource block (RB); the base station has two states, the sleep state and the fully open state, when The base station is in a dormant state, and the base station works in a low power consumption mode, only maintaining some basic functions; when the base station is fully turned on, all hardware modules of the base station are turned on to serve users. Firstly, the system throughput is mathematically modeled, transformed into a mathematical optimization problem, and then the optimization theory is used to analyze and solve it. Use the decomposition method to turn the obtained complex problem into a main problem and multiple sub-problems, and then use the projected sub-gradient method to solve t...

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Abstract

The invention relates to the field of communication and discloses an inter-cell interference control and energy-saving distribution achieving method in a cellular network. The method includes: firstly, on the basis of assumption that a base station can obtain channel information of users whom the base station supply service to, resource allocation states of the whole network and base station operating states are listed in an optimization function, and maximum energy efficiency of the whole network is obtained in a centralized mode; secondly, according to some approximation on math, a centralized algorithm is converted into a linear optimization problem; finally, an original decomposition method and a projection subgradient method are adopted, the centralized algorithm is converted into an approximate distributed algorithm, each cell can make an approximate optimal decision of the resource allocation states and the base station operating states in a dynamic mode as long as information of the adjacent cell is needed, and the maximum energy efficiency of the whole network is achieved approximately.

Description

technical field [0001] The invention relates to modern wireless communication technology, belongs to the application field of cellular network communication and wireless access, and particularly relates to a distributed method for realizing intercellular interference control and energy saving in a cellular network. Background technique [0002] With the rapid development of wireless communication technology, the data rate required in the new generation of communication standards is getting higher and higher, and the energy consumption of the wireless cellular network is also increasing accordingly. An effective method to improve energy efficiency adopts a multi-layer cellular network structure composed of traditional large cells and emerging small cells. Large cells have high power and large radius, providing wide-range coverage and services for high-speed mobile users. Small cells have low power and small radius, and provide access points with high data rates at close range...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W72/04H04W72/12
CPCY02D30/70
Inventor 江守超孙怡
Owner DALIAN UNIV OF TECH
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