Method, device and base station for selecting carrier

Abstract

Embodiments of the present invention provide a method, device, and base station for selecting a carrier. The method includes: the first base station obtains carrier information of a cell under the second base station; and the first base station selects a carrier application according to the obtained carrier information. In the embodiment of the present invention, when base stations of various forms can support multiple carriers, it is possible to know the interference situation of adjacent cells on all carriers, reduce inter-cell interference to the greatest extent, and improve system capability. It avoids interference information that can only be coordinated between cells of the same frequency, and realizes interference coordination of all cells under all carriers.

Description

technical field [0001] The invention relates to a wireless communication system, in particular to a method, device and base station for selecting a carrier. Background technique [0002] With the development of mobile broadband, the bandwidth requirements of end users are greatly increased, and the existing macro network-based networking mode will not be able to meet the bit rate required by mobile broadband services. In order to further improve the system capacity, more low-power access points or small base stations (hereinafter collectively referred to as small base stations) can be introduced within the scope of the macro network to improve the system capacity. The transmit power of the small base station is smaller than that of the macro base station, so the downlink coverage is much smaller than the downlink coverage of the macro base station. Taking the Long Term Evolution (LTE, LongTerm Evolution) system as an example, the home base station (Home eNodeB), micro base ...

AI Technical Summary

Problems solved by technology

[0007] The above method only supports the interaction of information between cells of the same frequency, and cannot select a suitable cell under different frequencies to avoid inter-cell interference

For example, when a base station eNB3 has only one cell 6 on carrier 1, it cannot obtain the interference information of cells 1, 2, 3, 4, and 5 on carriers 2 and 3 of adjacent base stations eNB1 and eNB2, so that when the base station eNB3 needs When adding carriers, it is impossible to understand the interference of adjacent cells on carriers 2 and 3, and it is impossible to avoid inter-cell interference

[0008] And currently, when two base stations establish an X2 interface, each base station will send its cell information to neighboring base stations. The cell information includes information such as the uplink and downlink carrier frequency and bandwidth of the cell. Before the cell information, the X2 interface cannot be established

In the prior art, there is no method for interference coordination between adjacent cells using carrier information

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