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Fractional Frequency Reuse Method for Hierarchical Heterogeneous LTE System Based on Intermediary Area

A technology of fractional frequency multiplexing and central area, which is applied in the direction of transmission system, digital transmission system, and multiple use of transmission paths, etc. It can solve the problems of sudden increase of users and low frequency utilization rate that weaken the load capacity of the cell, and achieve guaranteed spectrum Utilization, interference reduction, and system throughput improvement effects

Active Publication Date: 2019-09-24
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the frequency utilization rate of this scheme is low, which greatly weakens the load capacity of the cell and copes with the sudden increase of users.

Method used

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  • Fractional Frequency Reuse Method for Hierarchical Heterogeneous LTE System Based on Intermediary Area
  • Fractional Frequency Reuse Method for Hierarchical Heterogeneous LTE System Based on Intermediary Area
  • Fractional Frequency Reuse Method for Hierarchical Heterogeneous LTE System Based on Intermediary Area

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Embodiment

[0022] figure 2 It is a flow chart of a specific embodiment of the fractional frequency multiplexing method for a hierarchical heterogeneous LTE system based on an intermediate area in the present invention. like figure 2 Shown, the present invention is based on the layered heterogeneous LTE system fractional frequency multiplexing method of intermediary area and comprises the following steps:

[0023] S201: Macro cell area division:

[0024] In the macro cell area, the macro cell is divided into K sectors as required, K≥1, and then the distance from the center of the macro cell is in [0,r 1 ] as the central area, the distance from the center of the macro cell will be within (r 1 ,r 2 ] as the intermediate area, and the remaining area as the edge area, where r 1 2 1 The value range of is generally 0.25R≤r 1 ≤0.5R, the intermediate area is a ring area with an inner radius of r 1 , outer radius r 2 The value range of is generally 0.5R2 ≤0.75R.

[0025] In this embodim...

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Abstract

The invention discloses a method for fractional frequency multiplexing of a layered heterogeneous LTE system based on an intermediary area, which divides a macro cell into K sectors as required, and then divides the macro cell into a central area, an intermediary area and an edge from inside to outside Areas, a total of 3K sub-areas, first carry out spectrum allocation to the macro base station user MUE in each sub-area, and then carry out spectrum allocation to the secondary base station FBS in each sub-area, adopt the frequency spectrum allocation completed by the spectrum allocation principle set by the present invention , which can reduce interference and improve system throughput while ensuring spectrum utilization.

Description

technical field [0001] The invention belongs to the technical field of layered heterogeneous LTE communication, and more specifically, relates to a method for fractional frequency multiplexing of a layered heterogeneous LTE system based on an intermediate area. Background technique [0002] With the widespread deployment of LTE systems in real life, in order to improve the service quality of cell edge users and cell throughput, low transmission power secondary base stations (Femto-Cell Basestation, FBS) and macro base stations (Macro-CellBasestation, MBS) coexist The hierarchical heterogeneous network scheme has been widely used. The secondary base station FBS uses the licensed frequency band of the mobile network operator, and can deploy an orthogonal pattern in which different subbands are assigned to the macro cell and the secondary cell respectively to avoid interference, but at the cost of low network capacity and low spectrum utilization rate. The secondary base stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W72/04H04W72/08H04L5/00H04W72/54
CPCH04L5/0037H04W16/10H04W72/0453H04W72/541
Inventor 刘健黄赐
Owner UNIV OF SCI & TECH BEIJING