Method for selecting activation cell

Abstract

The invention provides a method for selecting an activation cell. The method comprises the following steps of: after receiving an activation request which is sent by a coverage cell, enabling capacity lifting cells which are dormant in a coverage area of the coverage cell to enter into a pre-activation state and starting a pre-activation timer; at the pre-activation state, accepting switch users but not accepting new users by the capacity lifting cells and only sending synchronizing signals and reference signals; selecting a cell in each capacity lifting cell by the coverage cell according to a measurement report which is report by UE (User Equipment) of the cell aiming at the capacity lifting cell and switching the users to the selected cell; and before the pre-activation time is time-out, automatically switching the capacity lifting cell with a switching request into an activated state. According to the method for selecting the activation cell, the purpose of energy saving can be conveniently achieved, the ping-pong handover is avoided and the realization is simple.

Description

technical field [0001] The invention relates to the energy-saving technology in the communication system, in particular to a method for selecting and activating a cell. Background technique [0002] In order to realize energy saving (Energy Saving, ES for short), a specific mechanism may be used to turn off radio frequency (RF) of certain cells, so as to reduce radio signal pollution. For example, during the day, the number of people in the office area increases and the business volume increases, while the number of people in the residential area decreases; the opposite is true at night. It is possible to turn off the RF of some residential areas during the day and turn it on again at night; and turn off the RF of some office areas at night and turn it on again during the day. [0003] There are two ES scenarios involved in this application. In these two scenarios, cells that provide basic coverage are called coverage cells, and cells that are used to increase capacity in h...

AI Technical Summary

Problems solved by technology

Although the business volume of cell 3 is small, its downlink transmit power amplifier function is still turned on, which is equivalent to idling operation and consumes a lot of power

Therefore, the energy saving efficiency is low

[0010] 2. Another situation is that after running for a period of time, the number of users in cell 3 is very small, and the conditions for entering the dormant state are met, so it is deactivated

[0020] There are certain shortcomings in the above-mentioned several methods for activating cell selection.

Method A requires manual data collection, and the information used for judgment is pre-stored statistical data, which cannot be dynamically adjusted according to real-time information, so the accuracy is not high and may affect the user's QoS; method B requires the dormant cell to open the monitoring Function, which has an impact on the energy saving effect; method C needs to add new X2 signaling to request the capacity to increase the cell to enter the detection state; method D has requirements for UE capabilities, and the complexity is relatively high

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