Energy-saving dynamic frequency spectrum planning method in femtocell network

A femtocell and dynamic spectrum technology, which is applied in network planning, energy-saving ICT, and energy consumption reduction. It can solve the problems of macro-cell interference coordination and energy consumption, and achieve the effects of improving energy utilization, reducing interruption rate, and reducing interference.

Inactive Publication Date: 2012-07-25
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of interference coordination and energy consumption between macro cells in femto cell upper layer network that cannot be well solved by existi

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  • Energy-saving dynamic frequency spectrum planning method in femtocell network
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  • Energy-saving dynamic frequency spectrum planning method in femtocell network

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Embodiment Construction

[0029] In order to make the description of the advantages of the technical solution of the present invention more clear, the specific implementation manners of the present invention will be further elaborated below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. According to the embodiments of the present invention, those skilled in the art can realize all other embodiments of the present invention without creative efforts, which all belong to the protection scope of the present invention.

[0030] In the following description, the technologies irrelevant to the present invention are only briefly explained or skipped directly.

[0031] The main idea of ​​the present invention is to adopt soft frequency multiplexing between macro cells to avoid interference between cells. After the femto cell is deployed, the mobile terminal first transmits a reference signal to the ...

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Abstract

The invention relates to an energy-saving dynamic frequency spectrum planning method in a femtocell network and provides an energy-saving dynamic frequency plan based on soft frequency reuse in a bilayer femtocell network, wherein an energy-consumption model of a downlink of a three-dimensional space femtocell bilayer network is established. According to the method disclosed by the invention, a soft frequency reuse scheme is adopted, interferences to macro cell users in a cell edge area are reduced, and the interruption rate of the edge users is reduced. Frequencies distributed to macro cell users and femtocell users in an internal area are orthogonal mutually, cross-layer interferences between a macro cell network layer and a femtocell network layer are avoided, the user distribution and business traffic distribution of the internal area and an external area of the macro cell are fully considered on the premise of guaranteeing QoS (Quality of Service) requirements of the users, the frequency spectra distributed to the macro cell users and the femtocell users are dynamically adjusted, the frequency spectrum utilization rate is increased, and thus, the energy utilization rate of the entire network is increased.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, particularly, the present invention is used in the Femtocell (Femtocell) double-layer network in the next generation mobile communication system (LTE / LTE-Advanced) based on soft frequency reuse (Soft frequency reuse, SFR) ) energy-saving frequency planning method. Background technique [0002] At present, the third-generation mobile communication system has been widely used in commercial use. At the same time, the 9th version (Release-9) of the LTE standard, the evolution technology of UMTS (Universal Mobile Telecommunications System), has also been formulated at the end of 2010. The standard formulation (Release-11) of the next generation mobile communication system has been started, and the LTE-Advanced technology formulated by 3GPP is expected to be high. [0003] With the development of wireless communication technology, for the LTE system, the unique OFDMA access method...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W16/10
CPCY02B60/50Y02D30/70
Inventor 苏涛李伟郑伟温向明
Owner BEIJING UNIV OF POSTS & TELECOMM
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