Distributed Sleep Mode Power Control in 5G Ultra Dense Networks

Although the application of the exhaustive search (ES) algorithm in the energy conservation strategy can realize the simultaneous switching off of multiple eNBs in the existing eNB-based (Evolved Node B) networks, it fails to satisfy the practical requirement of network deployment with the heavy computation burden. On account of this, this paper proposes an optimal switching-off eNB selection (OSS) algorithm in homogeneous networks. By selecting a certain cell within the coverage of multiple eNBs, the OSS algorithm can make an evaluation of the increment of network load caused by the switching off of various eNBs in the coverage area. Then it can sort one by one all of the eNBs that are to be switched off under the condition that the QoS (Quality of service) requirement of all of the users has been met. Afterwards, the OSS algorithm will switch the users according to the principle of least network load increment and eventually find an eNB that shows the optimal energy saving effect in sleep mode. The simulation results reveal that the OSS algorithm can satisfy the requirement of efficient energy conservation in wireless networks. Additionally, with low computational complexity, it also will facilitate network deployment.

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A survey on sleep mode techniques for ultra-dense networks in 5G and beyond

Computer Networks ◽

10.1016/j.comnet.2021.108567 ◽

2021 ◽

pp. 108567

Author(s):

Fatima Salahdine ◽

Johnson Opadere ◽

Qiang Liu ◽

Tao Han ◽

Ning Zhang ◽

...

Keyword(s):

Sleep Mode ◽

Dense Networks

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Impact of user mobility on transmit power control in ultra dense networks

2017 IEEE International Conference on Communications Workshops (ICC Workshops) ◽

10.1109/iccw.2017.7962816 ◽

2017 ◽

Author(s):

Weiqi Sun ◽

Yinglei Teng

Keyword(s):

Power Control ◽

User Mobility ◽

Transmit Power ◽

Dense Networks ◽

Transmit Power Control

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The System Power Control Unit Based on the On-Chip Wireless Communication System

The Scientific World JOURNAL ◽

10.1155/2013/939254 ◽

2013 ◽

Vol 2013 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Tiefeng Li ◽

Caiwen Ma ◽

WenHua Li

Keyword(s):

Wireless Communication ◽

Power Control ◽

Real Time ◽

Communication System ◽

Control Unit ◽

Sleep Mode ◽

Wireless Communication System ◽

Dynamic Voltage ◽

On Chip ◽

System Power

Currently, the on-chip wireless communication system (OWCS) includes 2nd-generation (2G), 3rd-generation (3G), and long-term evolution (LTE) communication subsystems. To improve the power consumption of OWCS, a typical architecture design of system power control unit (SPCU) is given in this paper, which can not only make a 2G, a 3G, and an LTE subsystems enter sleep mode, but it can also wake them up from sleep mode via the interrupt. During the sleep mode period, either the real-time sleep timer or the global system for mobile (GSM) communication sleep timer can be used individually to arouse the corresponding subsystem. Compared to previous sole voltage supplies on the OWCS, a 2G, a 3G, or an LTE subsystem can be independently configured with three different voltages and frequencies in normal work mode. In the meantime, the voltage supply monitor, which is an important part in the SPCU, can significantly guard the voltage of OWCS in real time. Finally, the SPCU may implement dynamic voltage and frequency scaling (DVFS) for a 2G, a 3G, or an LTE subsystem, which is automatically accomplished by the hardware.

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