Reference Signal Power Correction After Antenna Link Changes
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Solution Overview
Problem
In communication systems, dynamic antenna shutdown in network devices leads to inaccurate downlink radio link quality evaluation due to semi-static configuration of reference signals, which terminal devices cannot adapt to in real time, resulting in incorrect power adjustments and evaluation.
Innovation Solution
A communication method and apparatus that involves receiving indication information to determine a deviation value for reference signal power, allowing terminal devices to adjust their receive power or evaluation parameters to accurately assess radio link quality, reducing signaling overheads by only updating configuration information for different reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If dynamic antenna shutdown is implemented to reduce energy consumption, then energy saving is achieved, but downlink radio link quality evaluation accuracy deteriorates
Solution Approach 1:
The patent implements feedback by sending indication information from the network device to the terminal device, which carries configuration information about reference signals. The terminal device uses this feedback to adjust its receive power or evaluation parameters accordingly, ensuring accurate radio link quality evaluation even after dynamic antenna shutdown. This feedback mechanism resolves the contradiction by enabling the terminal to adapt to power changes caused by antenna shutdown while maintaining evaluation accuracy.
2Device complexity
If semi-static configuration of reference signal is used, then configuration complexity is reduced, but adaptability to dynamic antenna shutdown deteriorates
Solution Approach 1:
The patent transforms the static reference signal configuration into a dynamic one by introducing indication information that carries configuration information. This configuration information can be updated based on dynamic antenna shutdown states, allowing the reference signal parameters to adapt dynamically while maintaining manageable complexity through structured information exchange.
3Ease of operation
If terminal device uses preconfigured transmit power for evaluation, then evaluation process is simplified, but evaluation accuracy deteriorates due to power changes
Solution Approach 1:
The patent enables parameter changes by allowing the terminal device to adjust its receive power or evaluation parameters based on the indication information received from the network device. This adjustment compensates for transmit power changes in reference signals caused by dynamic antenna shutdown, maintaining evaluation accuracy while building upon the simplified preconfigured power approach.
Data Source
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AI summary
This application provides a communication method and apparatus. After a quantity of antenna links of a network device changes, a configuration of a reference signal sent by the network device may also change. In this application, the network device may indicate, to a terminal device by using indication information, a new configuration of the reference signal after the quantity of antenna links changes, so that the terminal device can evaluate downlink radio link quality based on the new configuration. For example, the terminal device determines a first deviation value based on the configuration, and corrects a predefined evaluation parameter or a receive power of a first reference signal based on the first deviation value. In this way, an accurate downlink radio link quality evaluation result is obtained.