Cell base station scope expansion and base station selection method based on signal to noise ratio

Abstract

The invention relates to a cell base station scope expansion and base station selection method based on a signal to noise ratio. The method comprises steps that, S01, a macro base station-picocell base station heterogeneous network model is established; S02, the k is made to be 1; S03, in the kth sector, all users respectively feedback RSRP data through an uplink link to a macro base station and a picocell base station in the kth sector; S04, SINR data of each user belonging to different base stations are calculated by the macro base station and the picocell base station in the kth sector; S05, an alternative bias value is set for the picocell base station in the kth sector; and S06, each user in the kth sector respectively establishes connection with one base station, if the k is smaller than the s, the k is made to plus 1, returning to the step S03 is carried out, if the k is equal to the s, base station scope expansion and base station selection of all sectors are accomplished. Compared with the prior art, base station selection is flexible for the users, communication pressure of the macro base station is alleviated, the lowest signal to noise ratio is guaranteed for the users, and average throughput of the users is improved.

Description

technical field [0001] The invention relates to a cell base station range extension and a base station selection method, in particular to a cell base station range extension and a base station selection method based on SINR. Background technique [0002] The traditional cellular network is composed of macrocellular cells, and the coverage radius of each cell is mostly 1km to 25km. Due to the large coverage radius, the transmission power of the base station is relatively strong, generally above 10W. A macro cell is a large area, and base station transmitting antennas are usually erected above surrounding buildings. Typically, there is no direct path between transceivers. [0003] Due to the poor performance of the macro cell edge users, the performance of the macro cell edge users can be improved by adding a pico base station, that is, the macro cell edge users are offloaded from the macro base station to the pico base station. However, under the macro base station-pico ba...

AI Technical Summary

Problems solved by technology

[0008] Archana Kamal and Vineetha Mathai (A Novel Cell Selection method for LTE HetNet, Communications and Signal Processing (ICCSP), 2014 International Conference on, 2014: 738-742) proposed a network coordinated cell selection scheme, which enables users to select a pico cell initially, and further judge whether to connect with the cell base station according to the user connection status of the cell base station. This method solves the problem that some users cannot communicate due to the overload of the pico cell, but it does not manage the cell edge users and cannot guarantee the transmission rate of the cell edge users

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