DRX Mechanism for Low-Power Beam Tracking in 5G Receivers
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Solution Overview
Problem
In 5G networks, beam tracking for high-frequency signal transmission consumes significant power due to the need for continuous monitoring of multiple beams, leading to inefficient power usage when no data is received.
Innovation Solution
Implementing a Discontinuous Reception (DRX) mechanism at a low frequency, where beam tracking is initiated only after receiving an indication to prepare for high-frequency data reception, thereby reducing unnecessary power consumption by minimizing initial beam searching time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam tracking is performed continuously to ensure optimal signal quality for high-frequency data transmission, then signal quality is improved, but power consumption increases significantly
Solution Approach 1:
The patent implements discontinuous reception (DRX) cycles where the receive end device alternates between active monitoring periods and sleep periods. During DRX on-duration, the device monitors for data and performs beam tracking only when necessary. This periodic operation pattern maintains signal quality when data is present while significantly reducing power consumption during idle periods, directly resolving the contradiction between continuous beam tracking reliability and energy efficiency
2Reliability
If beam tracking is performed frequently to maintain optimal receive beam for high-frequency signals, then data reception reliability is improved, but time consumption increases
Solution Approach 1:
The patent performs beam tracking in advance during DRX on-duration periods when the device is already active and monitoring for data. By preparing the optimal receive beam beforehand, the system ensures that when high-frequency data arrives, the beam tracking is already complete or can be quickly finalized, thus maintaining data reception reliability while minimizing the time lost to beam tracking operations
Data Source
AI summary
Embodiments of this application provide a data sending method, a data receiving method, and a device. In the data sending method, a receive end device performs a DRX operation at a low frequency based on a DRX parameter; and receives, in a time indicated by the DRX parameter, first indication information sent by a transmit end device, where the first indication information is used to instruct the receive end device to prepare to receive data at a high frequency. In this process, the receive end device performs the DRX operation only at the low frequency, and starts beam tracking only after receiving the first indication information that instructs the receive end device to receive the data at the high frequency, to avoid unnecessary beam tracking and save power of the receive end device.