A method and system for determining antenna downtilt
A technology of antenna downtilt and antenna normal, applied in the field of communication, can solve problems such as ineffective control of cell interference and coverage, unreasonable setting of antenna downtilt, etc.
Active Publication Date: 2017-04-12
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
[0007] The technical problem to be solved in this application is to provide a method and system for determining the downtilt angle of the antenna, so as to solve the problem that the setting of the downtilt angle of the antenna is unreasonable and the interference and coverage of the cell cannot be effectively controlled
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[0104] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0105] This application first determines the interfered cell of the current cell according to the antenna normal direction and position information of each cell, and then obtains the actual coverage distance of the current cell based on the current cell and the interfered cell of the cell, thereby calculating the current cell The actual antenna downtilt angle fully considers the mutual interference between cells in the calculation process, so the antenna downtilt angle calculated by the above coverage distance is more reasonable, which improves the design ability of the mobile communication network and shortens the construction period.
[0106] refer to figure 2 , shows a flow chart of a method for dete...
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The application provides a method and a system for determining the downward inclination angles of antennas in order to resolve a problem of ineffectively-controlled cell interference and coverage caused by unreasonably-arranged downward inclination angles of the antennas. The method comprises: obtaining the normal direction and the positional information of antennas in all cells in a preset area; successively determining cells subjected to interference in the rest cells by using the ith cell as an interference source cell and according to the normal direction and the positional information of the antenna in the ith cell and the positional information of rest cells except the ith cell; respectively calculating the cell distance between the ith cell and each cell subjected to interference; calculating the coverage distance of the ith cell according to the cell distance; calculating an initial antenna downward inclination angle of the ith cell according to the coverage distanct; and comparing the initial antenna downward inclination angle with a preset antenna downward inclination angle in order to determine the actual antenna downward inclination angle of the ith cell. The antenna downward inclination angle determined by the method is reasonable so as to guarantee the coverage of the own cell and inhibit adjacent cell interference.
Description
technical field [0001] The present application relates to the technical field of communications, and in particular to a method and system for determining an antenna downtilt angle. Background technique [0002] The antenna is an important part of the wireless communication system, and its parameters such as gain, pattern, height, azimuth and downtilt will directly affect the field strength distribution of the wireless signal. In actual engineering, the downtilt angle of the antenna, as an important means to control the reasonable coverage of the cell, plays an important role in the initial design and later optimization. [0003] Usually, the setting of the antenna downtilt angle has two aspects, such as figure 1 Shown: [0004] (1) Focus on interference suppression in areas where base stations are densely distributed. Since the antenna gain decreases slowly in the range of the base station antenna half power angle (θ / 2), and the antenna gain attenuates quickly after the h...
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IPC IPC(8): H04W16/18H04W24/02H04B17/318H04B17/345H04B17/12
Inventor 王丹吴央
Owner DATANG MOBILE COMM EQUIP CO LTD