5G Communication Measurement for Energy-Saving Cell Switching
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Solution Overview
Problem
Balancing network energy saving (NES) and rapid switching to deactivated cells in 5G networks is challenging due to the energy consumption required for activating cells to support terminal device access and mobility.
Innovation Solution
A communication method involving measurement indications carried in wake-up signals, paging indications, PDCCH, RRC signaling, or MAC CEs, along with determining valid starting times for measurement reference signals and reporting measurement results through PRACH, Msgs, or UCI, to optimize cell switching efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If deactivated cells are activated to support terminal device access and mobility, then cell switching capability is improved, but network energy consumption increases
Solution Approach 1:
The network device performs measurement configuration and reference signal transmission in advance before the terminal device needs to switch cells. By preparing measurement objects, configuring measurement parameters, and transmitting reference signals beforehand, the system enables rapid cell switching without needing to activate deactivated cells at the moment of switching, thus maintaining cell switching capability while avoiding unnecessary energy consumption.
Solution Approach 2:
The patent separates the measurement configuration function from the cell activation function. The network device can configure measurement objects and transmit reference signals on deactivated cells without activating those cells. This extraction allows the terminal device to perform measurements on deactivated cells independently, enabling cell switching preparation without the energy cost of full cell activation.
2Speed
If measurement configuration is performed before cell activation, then switching speed is improved, but measurement accuracy may deteriorate due to cell deactivation
Solution Approach 1:
The network device configures measurement objects with specific local properties suitable for deactivated cells. Reference signals are transmitted with parameters optimized for measurement purposes on deactivated cells, such as appropriate power levels and signal structures. This localized optimization ensures that measurements on deactivated cells achieve sufficient accuracy for switching decisions, while the rest of the cell remains deactivated to save energy.
Solution Approach 2:
The system performs partial cell activation by transmitting only the necessary reference signals for measurement purposes without fully activating the cell. This partial action provides sufficient measurement signal quality for accurate measurements while avoiding the full energy consumption and complexity of complete cell activation. The reference signals are transmitted with excessive power or duration relative to normal operation to ensure measurement accuracy despite cell deactivation.
Data Source
AI summary
Embodiments of the present disclosure provide a communication method and apparatus, relating to the field of communication technologies. The method includes performing measurement based on a measurement indication. The method provided in the embodiments of the present disclosure helps improve efficiency of switching between cells.