A Cognitive Interference Coordination Method for Dense Cellular Networks Based on Random Geometry

A technology of interference coordination and random geometry, applied in transmission monitoring, electrical components, orthogonal multiplexing systems, etc., can solve problems such as differences in the number of users carried by small cells

Active Publication Date: 2021-01-26
JIANGSU HENGXIN TECH CO LTD
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Problems solved by technology

However, in the actual small cell network, the number of available channels is far more than one, and the number of users carried by each small cell also has a large difference.

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  • A Cognitive Interference Coordination Method for Dense Cellular Networks Based on Random Geometry
  • A Cognitive Interference Coordination Method for Dense Cellular Networks Based on Random Geometry
  • A Cognitive Interference Coordination Method for Dense Cellular Networks Based on Random Geometry

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with accompanying drawing.

[0059] A Cognitive Interference Coordination Method for Dense Cellular Networks Based on Random Geometry, such as figure 1 As shown, it specifically includes the following steps:

[0060] Step 1: Establish a cognitive interference coordination mechanism, including the avoidance of cross-layer interference and the coordination of same-layer interference;

[0061] Step 2: Calculate the SINR of macro users and small cell users;

[0062] Step 3: Calculate the average spectral efficiency of any specific channel in the dense cellular network;

[0063] Step 4: Design the optimal exclusive area radius, realize the trade-off between spectrum reuse rate and interference coordination, and improve the spectrum efficiency of the dense cellular network.

[0064] Dense small cell network architecture such as figure 2 As shown, consider a macro cell area with a coverage radius of 1Km,...

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Abstract

The invention discloses a random geometry-based cognitive interference coordination method for a dense cellular network. Through the design of a cognitive interference coordination scheme, a dense cognitive small cellular network interference that supports multi-channel access and an indeterminate number of bearer users is proposed. The mitigation mechanism effectively solves the same-layer and cross-layer interference in dense networks. Based on empirical network parameters, this scheme sets a protection area for small cells accessing the same channel, uses random geometric modeling to obtain the relationship between spectrum efficiency and exclusive radius in dense cellular networks, and uses one-dimensional data search method to quickly The optimal exclusive radius is obtained, which can achieve the best trade-off between channel reuse rate and interference coordination. Experimental results verify that this scheme can effectively alleviate the co-channel interference between small cells, and can significantly improve the spectral efficiency of dense cellular networks compared with existing schemes.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to an optimal cognitive interference coordination method for a dense cellular network in a 5G system. Background technique [0002] Dense cellular network is one of the main technical means to meet the demand for explosive traffic growth in the future. While the deployment of small cells in dense network improves system performance, it also makes system interference more complicated, mainly including two types of interference: same-layer interference and Interference across layers. Same-layer interference includes interference between macro cells and interference between small cells. In a dense network, due to the short distance between small cells, the same-layer interference between small cells cannot be ignored. Cross-layer interference is the mutual interference between the macro cell and the small cell layer. [0003] Spectrum access strategies play ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/382H04B17/391H04B17/336H04B17/345H04W74/08H04J11/00
CPCH04J11/0023H04W74/0833H04B17/336H04B17/345H04B17/382H04B17/391
Inventor 郭欣然宋荣方王鸿
Owner JIANGSU HENGXIN TECH CO LTD
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