Energy-saving method and system of base station

Abstract

The invention provides an energy-saving method of a base station, comprising the following steps that: when a first condition is met, the base station enters an energy-saving mode and at least one multi-input multi-output (MIMO) cell of the base station is reconfigured into a non-MIMO cell; and when a second condition is met, the base station enters a normal mode and at least one non-MIMO cell of the base station is reconfigured into the MIMO cell. The invention also provides an energy-saving system of the base station. The invention also can dynamically configure the cell mode and save energy consumption.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to a base station energy saving method and system. Background technique [0002] At present, the profits of the telecom industry are gradually decreasing. While telecom operators increase revenue by expanding market share and business types, they are also paying more and more attention to saving operating costs (OPEX), and equipment energy consumption is an important part of OPEX. part. [0003] UMTS (Universal Mobile Telecommunications System, universal mobile communication system) can be divided into several main components: one or more CN (CoreNetwork, core network) responsible for establishing and controlling user sessions, and UTRAN (UMTS TerrestrialRadio Access Network, Universal Terrestrial Radio Access Network). The UTRAN includes two network elements, RNC (Radio Network Controller, radio network controller) and NodeB (base station), wherein the base station inclu...

AI Technical Summary

Problems solved by technology

Therefore, in the MIMO cell of the main pilot-dominant mode, although the total transmit power is the same as that of the non-MIMO cell, because the RU transmit power of each MIMO cell is only half of the RU of the non-MIMO cell, its power amplifier efficiency is not as good as that of the non-MIMO cell. The RU of a MIMO cell is high, resulting in a higher total power consumption than that of a non-MIMO cell

For the MIMO cell of the main pilot-coach mode, its total transmission power is higher than that of the non-MIMO cell, so its total power consumption will obviously be higher than that of the non-MIMO cell

[0016] At present, in the UMTS system, cells are either fixedly configured in MIMO mode or fixedly configured in non-MIMO mode, and the conversion between MIMO cells and non-MIMO cells cannot be realized through cell reconfiguration

The advantage of a cell configured in MIMO mode is to increase user data throughput. However, whether terminal users in a MIMO cell can use MIMO dual-stream scheduling is related to the terminal capability, the amount of terminal user data, and the CQI of the terminal user. If the terminal user does not meet the In the case of MIMO dual-stream mode, the cell still uses MIMO mode to transmit, which will waste the power consumption of RU

The RU power consumption of a cell configured in non-MIMO mode will be smaller than that of a MIMO cell, but MIMO end users cannot experience the high data throughput rate of MIMO

Images