SRS Resource Configuration Adjustment for Wireless Terminals
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Solution Overview
Problem
Current wireless communication systems face challenges in adapting SRS resource configurations to terminal device capabilities and changing channel or interference conditions, leading to resource wastage and increased signaling overhead, especially with multiple antenna panels.
Innovation Solution
A method and apparatus that determine SRS resource configuration update information based on target information such as CSI, beam management, and antenna state changes, allowing for dynamic adjustment of SRS resource settings to match terminal device capabilities and environmental changes, thereby optimizing resource use and beam transmission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the largest SRS set is configured for the terminal to avoid RRC reconfiguration, then the signaling overhead is reduced, but the SRS configuration cannot adapt to terminal capability changes, channel changes, or interference changes, causing resource wastage
Solution Approach 1:
The patent introduces dynamic SRS resource adjustment mechanisms that allow the SRS configuration to be modified without full RRC reconfiguration. The network can dynamically adjust SRS resource parameters (such as frequency position, bandwidth, power) based on terminal capability changes, channel conditions, or interference levels, making the originally static configuration adaptable to varying conditions.
Solution Approach 2:
The patent segments the SRS configuration into different controllable parameters that can be adjusted independently. Instead of treating the entire SRS set as an indivisible unit requiring full reconfiguration, the configuration is divided into adjustable parameters (resource allocation, power settings, frequency positions) that can be modified separately through streamlined procedures, reducing the overhead of reconfiguration while maintaining adaptability.
2Adaptability or versatility
If a large SRS set is configured to cover all possible scenarios, then the system can handle various terminal capabilities and channel conditions, but the signaling overhead increases and resources are wasted when not all resources are needed
Solution Approach 1:
The patent implements dynamic adjustment of SRS resource parameters based on actual network conditions and terminal capabilities. Instead of configuring a static large SRS set to cover all scenarios, the system dynamically adjusts the SRS configuration size and parameters according to current needs, reducing signaling overhead while maintaining the ability to handle various conditions when necessary.
Solution Approach 2:
The patent changes key parameters of the SRS configuration (such as bandwidth, power, frequency position, resource allocation) based on terminal capability reports, channel quality indicators, and interference measurements. By adjusting these parameters dynamically rather than maintaining a fixed large configuration, the system achieves adaptability without the overhead of configuring and managing unnecessarily large SRS sets.
3Adaptability or versatility
If the SRS resource configuration is adjusted frequently to adapt to changing conditions, then the adaptability improves, but the signaling overhead and system complexity increase
Solution Approach 1:
The patent introduces periodic adjustment mechanisms where SRS resource parameters are updated at predetermined intervals or based on triggering events (such as channel quality thresholds, interference levels, or terminal capability changes). This periodic approach provides regular adaptability without requiring continuous or overly frequent adjustments, thereby managing system complexity while maintaining flexibility.
Solution Approach 2:
The patent implements feedback mechanisms where the network monitors terminal capability reports, channel quality indicators, and interference measurements to determine when SRS configuration adjustments are necessary. This feedback-driven approach enables adaptability by adjusting configurations based on actual conditions rather than on a fixed schedule, reducing unnecessary adjustments and managing complexity through condition-based triggering.
Data Source
AI summary
Disclosed in the embodiments of the present application are a method for adjusting a sounding reference signal (SRS) resource, and an apparatus therefor, which can be applied to systems such as a long term evolution (LTE) system, a 5th generation (5G) mobile communication system, a 5G new radio (NR) system, or other future new mobile communication systems. The method comprises: a terminal device determines an SRS resource configuration adjustment condition according to target information; and the terminal device sends to a network-side device SRS resource configuration update information expected by the terminal device. The network-side device receives the SRS resource configuration update information expected by the terminal device that is sent by the terminal device; and, according to the SRS resource configuration update information expected by the terminal device, the network-side device adjusts the SRS resource configuration corresponding to the terminal device. By implementing the embodiments of the present application, the SRS resource configuration update information expected by a terminal device is determined by means of target information, such that the problem of an SRS set configuration not adapting to the capabilities of the terminal device and to a change in a channel or a change in interference can be avoided, thereby being conducive to saving resources and avoiding resource waste.