Operator: 5g base station sleep only to reduce consumption, more users can wake up

category:Internet
 Operator: 5g base station sleep only to reduce consumption, more users can wake up


Recently, the Luoyang branch of China Unicom announced that its official account of the WeChat public has recently announced that Luoyang Unicom has opened up 3 different base station radio frequency unit (AAU) devices at different times, opening the deep sleep function in no load condition at the same time, so as to achieve the goal of intelligent base station equipment energy consumption control. For example, for a site that has not been verified by a single station or has been verified by a single station, the AAU deep sleep function is turned on all the time; for the site that is undergoing single station verification, the AAU deep sleep function is turned on in different periods.

The news triggered a heated discussion on the Internet. Why does 5g base station sleep? Will it affect the communication function of users? To this end, the reporter of science and Technology Daily had a deep understanding.

Power failure of no load equipment reduces energy consumption

What is AAU deep dormancy? Li Fuchang, deputy director of Wireless Research Department of China Unicom Network Technology Research Institute, introduced that the deep sleep function of AAU in no-load state refers to that when the base station business is in a long idle state, because there is no 5g user access, AAU equipment can turn off the power supply of most active devices and enter the sleep state, so as to achieve the purpose of reducing the no-load power consumption of AAU.

Why do you want to let AAU devices in no-load state enter deep sleep? The answer, of course, is to reduce energy consumption. Li Fuchang explained that the AAU equipment of 5g base station supports 64 channels or 32 channels, which adds a lot of active devices, baseband processing units and other devices than the traditional 4G equipment, so the no-load power consumption of this type of equipment will be greatly increased.

It is understood that 5g bandwidth increases by five times compared with 4G, and power consumption will also increase accordingly. Among them, the increase of AAU power consumption is the main reason for the increase of 5g base station power consumption.

When the base station is normally turned on, compared with the peak period, the energy consumption of the base station in the latter half of the night is not much reduced, but most of the energy consumption is invalid energy consumption . It is a trend of network management refinement to let AAU devices in no-load state enter deep sleep Fu Liang, an analyst in the telecom industry, said that this practice has little impact on users, but it can significantly reduce operators electricity and other maintenance costs.

Users can wake up when the scale appears

So, will this deep sleep affect the users use? In this regard, Li Fuchang said that the deep sleep function of 5g base station AAU is turned on in the idle time of business, and the operators will judge according to the real-time data, so as to realize the intelligent management of 5g network power consumption. If 5g traffic suddenly increases, AAU equipment can also wake up quickly through the network management platform.

A technical expert of ZTE said: after entering the deep sleep state, the base station is still in the state of power on, and carries out signaling interaction with the core network regularly to maintain the minimum power consumption value, but it does not provide services.

Yang Jianyu, general manager of China Mobile Henan Co., Ltd., told Science and Technology Daily that the 5g base station goes into deep sleep and the street lights are not the same thing. It has no strict schedule. Through artificial intelligence monitoring, 5g base station can wake up the base station at any time and resume normal use if it is found that a large number of users are using the base station.

Fu Liang said that compared with 5g services for ordinary consumers, the impact of base station sleep on 5g industry applications is smaller. Because the industry application demand curve is obvious, operators can adjust the base station usage according to the demand, so as to reduce the power consumption as far as possible without affecting the use. In addition, in the independent networking network, if the automatic driving and automatic control have been widely used, the 5g network in the involved area will not adopt this sleep mode, but will adopt a more intelligent scheduling mode.

Working together to reduce the cost of electricity

In order to solve the problem of high power cost of 5g base station, local governments have begun to issue policies one after another. At present, the policy support to reduce the electricity cost of 5g base station is mainly reflected in three aspects: one is to promote the conversion of power supply to direct power supply, which is the key link to reduce the power consumption cost; the second is the directional support for reducing electricity charges; the third is the local financial support.

Huawei and ZTE have been trying to reduce the power consumption of 3G equipment for operators. Operators are also evolving from artificial energy-saving mode to intelligent energy-saving mode, and develop ways to reduce energy consumption, including deep sleep and symbol shutdown. Previously, Huaweis powerstar energy-saving solution can realize 2G, 3G, 4G, 5g multi frequency network collaborative scheduling through AI and other technologies, so as to achieve the purpose of energy saving. Jiangsu Telecom and ZTE jointly pilot the 5g energy-saving technology of symbol turn-off, deep sleep and symbol turn-off superimposed deep sleep.

The so-called sign off is just like a one-way four lane expressway, in which people maintain order in each lane, but three lanes are closed in idle time at night, leaving only one. Compared with deep sleep, the power saving effect of sign off is weak, but it can ensure that users can connect to 5g network at any time. The measured results show that the symbol off can reduce the consumption by more than 20%, and the average consumption can be reduced by more than 60% during the deep sleep period. Among them, the deep sleep consumption reduction of the main AAU in 5g phase II is as high as 80%. After the symbol turn-off superimposes on the deep sleep, the consumption can be reduced by more than 30% in the whole day, and the network performance remains stable during the energy-saving period. At present, we are promoting the industrial chain to further reduce the power consumption of 5g base stations in terms of technology, such as using processing chips with lower power consumption, and energy-saving control through artificial intelligence algorithms, etc. In the current network deployment, the base station transmission power configuration and the number of transmit and receive antennas are determined according to the local environment and the number of users. The power consumption can be reduced by flexible selection of base station configuration. Source: Wang Fengzhi, editor in charge of science and Technology Daily_ NT2541

The so-called sign off is just like a one-way four lane expressway, in which people maintain order in each lane, but three lanes are closed in idle time at night, leaving only one. Compared with deep sleep, the power saving effect of sign off is weak, but it can ensure that users can connect to 5g network at any time. The measured results show that the symbol off can reduce the consumption by more than 20%, and the average consumption can be reduced by more than 60% during the deep sleep period. Among them, the deep sleep consumption reduction of the main AAU in 5g phase II is as high as 80%. After the symbol turn-off superimposes on the deep sleep, the consumption can be reduced by more than 30% in the whole day, and the network performance remains stable during the energy-saving period.

At present, we are promoting the industrial chain to further reduce the power consumption of 5g base stations in terms of technology, such as using processing chips with lower power consumption, and energy-saving control through artificial intelligence algorithms, etc. In the current network deployment, the base station transmission power configuration and the number of transmit and receive antennas are determined according to the local environment and the number of users. The power consumption can be reduced by flexible selection of base station configuration.