A method for activating a dormant small base station in a layered network

Abstract

The invention provides a hierarchical network dormant small base station activation method. The method includes the steps that a dormant small base station detects an uplink signal, when the uplink signal reaches certain threshold value, the dormant small base station sends a downlink reference signal; when a user is not in the coverage range of the dormant small base station, the dormant small base station cannot receive activation request information from an adjacent base station in the time window, and the dormant small base station stops sending the downlink reference signal; when the user is in the coverage range of the dormant small base station, the user detects the downlink reference signal and sends the detected information to the service base station of the downlink reference signal; the service base station determines whether the dormant small base station is activated or not according to the user service amount, the signal intensity and the loading information of the cell. According to the hierarchical network dormant small base station activation method, the dormant small base station is activated according to the service demands and the original service cell environment, it can be avoided that the dormant small base station is activated invalidly, the small base station can be activated timely to avoid the coverage loopholes as well, the spectrum resources can be fully utilized, the operation efficiency of a system is improved, and green communication is achieved effectively.

Description

technical field [0001] The invention belongs to the technical field of fourth-generation mobile communication networks, and in particular relates to a method for activating a dormant small base station in a layered network. Background technique [0002] The 3GPP TSG RAN#58 meeting proposed to study the physical layer of the cell in R12, mainly for the effective operation of the small base station. In the physical layer, it is proposed to focus on the effective interference coordination mechanism for changing services, and to pay attention to the dynamic dormancy and activation of the small base station. . [0003] In R12, in order to improve system throughput, small base stations will be densely deployed to balance the load of macro base stations. However, the dense deployment of small base stations will bring more interference and make the interference environment more complicated. This is because the main interference source is not one, but multiple, and not only the mac...

AI Technical Summary

Problems solved by technology

Therefore, adopting the method based on the uplink signal will lead to invalid activation, thereby wasting resources, and will also bring interference and energy consumption

If the method based on downlink signals is used, downlink signals need to be transmitted periodically. If the period is too long, users may not be detected in time. If the period is too short, a large number of downlink signals will be required, which not only wastes resources, but also brings downlink problems to densely deployed small base station scenarios. Interference, at the same time, is not conducive to energy saving

In addition, no matter whether it is based on the uplink signal method or the downlink signal method, the user traffic and the surrounding environment of the activated dormant small base station are not considered comprehensively.

Activating a dormant small base station when the traffic volume is low may cause greater interference and cannot effectively use spectrum resources, resulting in reduced network performance

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