Picocell sleep joint optimization method based on energy efficiency and traffic load

A technology of pico base stations and energy efficiency, applied in the network field of wireless communication networks, can solve the problems of macro base station network congestion, unfavorable network load balancing, etc.

Active Publication Date: 2016-06-01
XI AN JIAOTONG UNIV
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Problems solved by technology

This method is simple to implement, but due to the differences between the deployment positions of the pico base stations, it is not appropriate to judge with the same threshold; in addition, during the sleep process of the pico base station, some users will switch to the macro base station accordingly In this method, the macro base station will always be in a high load state, causing serious congestion in the macro base station network, and it is also not conducive to the balance of network load

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  • Picocell sleep joint optimization method based on energy efficiency and traffic load
  • Picocell sleep joint optimization method based on energy efficiency and traffic load
  • Picocell sleep joint optimization method based on energy efficiency and traffic load

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Embodiment Construction

[0047] The present invention is described in further detail below in conjunction with accompanying drawing:

[0048] refer to figure 1 , figure 2 and image 3 According to the present invention, the method for joint optimization of femto base station dormancy based on energy efficiency and traffic load includes the following steps:

[0049] 1) Set the load threshold θ that triggers the dormancy algorithm of the pico base station, and then set the system performance function according to the type of base station;

[0050] 2) Calculate the current state system performance function value ψ1, and then input the minimum load in the current pico base station;

[0051] 3) Judging whether the minimum load in the current pico base station is less than the load threshold θ, if the minimum load in the current pico base station is less than the load threshold θ, input the users in the pico base station in turn, and then determine whether the input users are within the coverage of the ...

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Abstract

The invention discloses a picocell sleep joint optimization method based on energy efficiency and traffic load. A cell utility function is defined according to influence of the energy efficiency and the traffic load on the performance of cells in a multilayer heterogeneous network, and then a network system performance function is defined according to influence of the performance of different types of cells on the performance of the network system. Whether sleeping of a certain picocell enhances or reduces the performance of the whole network system is estimated by utilizing the defined functions, and sleeping of the picocell is performed if system performance is enhanced, or the picocell is maintained to be on. With application of the method, sleeping difficulty is different according to different positions of the picocells in sleeping of the picocells so that reasonable sleeping of the picocells can be performed. Meanwhile, energy consumption can be reduced by applying the method without overload of a single cell so that the performance of the network system can be maintained to be in the great state.

Description

technical field [0001] The invention belongs to the field of network technology in wireless communication networks, relates to a dormancy method for a pico base station, in particular to a joint optimization dormancy method for a pico base station based on energy efficiency and traffic load. Background technique [0002] Energy efficiency in heterogeneous networks is an important component of green communication. Currently in mobile communications, more than 80% of energy is consumed in radio access networks, especially in base stations. The current heterogeneous network is mainly composed of macro base stations, micro base stations and pico base stations. The dense deployment of low-power pico base stations not only improves the energy efficiency of the system, but also offloads part of the traffic of the macro base station to the pico base station to achieve network load balancing. Deploying pico base stations at the cell edge can effectively solve the problem of insuffi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W52/02
CPCH04W28/08H04W52/0206Y02D30/70
Inventor 曲桦赵季红王伟鹏
Owner XI AN JIAOTONG UNIV
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