Antenna selection method and antenna selection device of distributed antenna system

Abstract

The invention discloses an antenna selection method and an antenna selection device of a distributed antenna system. The antenna selection method and the antenna selection device are applied to an antenna set to be selected in a preset communication zone, and the antenna set to be selected comprises at least two antennas. The method includes: acquiring timing capture inspection amount of a mobile terminal at a preset terminal position point in the communication zone with each antenna; determining a maximum value of the timing capture inspection amount of the mobile terminal with each antenna, and generating a maximum inspection amount set when the mobile terminal is positioned at the terminal position point; acquiring the number of elements of the maximum inspection amount set, and computing collaborative thresholds of the antennas corresponding to the number of the elements according to the number of the elements; and judging whether each element in the maximum inspection amount set is larger than or equal to the collaborative threshold of the antenna corresponding to the element or not, and if yes, selecting the antennas corresponding to the elements in the maximum inspection amount set as target antennas.

Description

technical field [0001] The present application relates to the communication field, and in particular to an antenna selection method and device for a distributed antenna system. Background technique [0002] Distributed antenna systems are used for features such as reducing outage probability, saving transmission power and increasing system capacity, and are part of the fourth-generation wireless communication system. In order to effectively use the antenna resources in the distributed antenna system and improve the spectrum utilization rate of the system, multi-antenna cooperative signal processing technology is generally used. However, in a distributed antenna system, the antennas in the communication area are generally randomly placed, so that the selection of the target antenna serving the mobile terminal directly affects the performance of the distributed antenna system. Antenna selection is an urgent problem to be solved in distributed antenna systems. [0003] The cu...

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Problems solved by technology

[0005] In view of this, the present application provides an antenna selection method and device for a distributed antenna system, which is used to solve the problem that the assumptions in the prior art when selecting a target antenna in a distributed antenna system are too ideal, so that the selected antenna does not Technical problems that cannot meet the actual engineering needs and significantly reduce the accuracy and effectiveness of antenna selection

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