GSM Co-Channel and Adjacent Channel Interference Analysis and Optimization

IF 5.2 1区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS Tsinghua Science and Technology Pub Date : 2011-12-01 DOI:10.1016/S1007-0214(11)70078-5

Lina Lan, Xuerong Gou, Jingli Mao, Wenyuan Ke

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引用次数: 5

Abstract

Most current Global System for Mobile Communications (GSM) frequency planning methods evaluate the interference and assign frequencies based on measurement reports. Assigning the same or adjacent frequencies to cells close to each other will introduce co-channel and adjacent channel interference which will reduce network performance. Traditionally, man power is used to check and allocate new frequencies which is time consuming and the accuracy is not satisfactory. This paper presents an intelligent analysis method for optimization of co-channel and adjacent channel interference by exploiting cell configuration information. The method defines an interference evaluation model by analyzing various factors such as the base station layer, the azimuth ward relationship, and the cell neighborhood relationships. The interference for each frequency is evaluated and the problem frequencies are optimized. This method is verified by a large number of actual datasets from an in-service GSM network. The results show this method has better intelligence, accuracy, timeliness, and visualization than traditional methods.

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GSM同信道和相邻信道干扰分析与优化

目前全球移动通信系统(GSM)的频率规划方法大多基于测量报告来评估干扰并分配频率。将相同或相邻频率分配给彼此靠近的小区将引入共信道和相邻信道干扰，从而降低网络性能。传统的新频率检测和分配方法采用人工进行，既耗时又精度不高。本文提出了一种利用小区结构信息优化同信道和相邻信道干扰的智能分析方法。该方法通过分析基站层、方位关系、小区邻域关系等因素，定义干扰评估模型。对每个频率的干扰进行了评估，并优化了问题频率。该方法通过在网GSM的大量实际数据集进行了验证。结果表明，与传统方法相比，该方法具有更好的智能性、准确性、时效性和可视化。

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