Beam Management Method for Reducing Resource Waste in NR Networks
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Solution Overview
Problem
In high-frequency communication systems, especially in new radio (NR) networks, the large transmission attenuation of electromagnetic waves leads to frequent beam failures when terminal locations change, necessitating beam recovery processes that consume significant resources without accurately determining when recovery is necessary.
Innovation Solution
A method that involves detecting reference signals and downlink indication information on multiple time-frequency resources to determine the sending status of reference signals, allowing terminals to continue detecting signals or initiate beam recovery only when necessary, thereby avoiding resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs beam recovery process when reference signals are not received, then communication reliability is improved, but communications system resources are wasted due to unnecessary recovery processes
Solution Approach 1:
The network device performs preliminary action by sending downlink indication information to notify the terminal in advance whether reference signals will be transmitted. This allows the terminal to determine beforehand whether beam recovery is necessary, avoiding unnecessary recovery processes and saving communications system resources while maintaining communication reliability.
2Measurement precision
If the terminal continuously monitors reference signals on multiple time-frequency resources, then beam failure detection accuracy is improved, but device complexity increases
Solution Approach 1:
The network device provides feedback through downlink indication information, notifying the terminal whether reference signals are scheduled for transmission on specific time-frequency resources. This feedback mechanism enables the terminal to accurately determine beam failure status without continuously monitoring all resources, reducing terminal complexity while improving detection accuracy.
3Reliability
If the terminal initiates beam recovery process, then communication link reliability is improved, but time resources are consumed
Solution Approach 1:
The network device sends downlink indication information in advance to indicate whether reference signals are scheduled for transmission. This preliminary notification allows the terminal to avoid initiating unnecessary beam recovery processes, saving time resources while ensuring communication link reliability is maintained when actually needed.
Data Source
AI summary
Embodiments of this application provide a beam management method, a terminal, a network device, and a storage medium. The method includes: when a quantity of reference signals whose RSSIs are greater than a first preset value in reference signals received on a first time-frequency resource on one of one or more beams is less than a second preset value, detecting, by the terminal, a reference signal and/or downlink indication information (used to indicate a sending status of the reference signal on the first time-frequency resource and/or a second time-frequency resource on the beam) from the network device on the second time-frequency resource on the beam. Further, when receiving the downlink indication information on the second time-frequency resource on the beam, the terminal continues to detect a reference signal from the network device on the beam, thereby saving communications system resources.