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1 引言随着人们生活水平的不断提高,人们对健康和环保越来越关注,这客观上使得无线蜂窝网络的运营商寻找合适的蜂窝站址变得越来越困难。对移动运营商尤其是新的移动运营商来说,在一个网络的铺设前期,希望采用广覆盖、低容量密度的设备进行建网,以达到用最少的成本实现最大的覆盖目的,使广大用户享受到精品网络的良好服务。但随着用户规模的不断增长和业务需求的不断丰富,网络也需要不断扩
1 Introduction As people’s living standards continue to rise, people are increasingly concerned about health and environmental protection, which objectively makes it more and more difficult for wireless cellular network operators to find suitable cell sites. For mobile operators, especially the new mobile operators, in the pre-deployment of a network, it is hoped to build a network by using equipment with a wide coverage and a low capacity density so as to achieve the maximum coverage with the least cost and enable the majority of users Enjoy the good service of boutique network. However, as the size of users continues to grow and the demand for services continues to increase, the network also needs to constantly expand