SRS Resource Configuration for Cross-Subband Channel Detection

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Solution Overview

Problem

Current communication protocols require frequent RRC configuration changes for frequency-domain position or bandwidth size adjustments of SRS resources, limiting flexibility and efficiency in detecting channels across different frequency bands.

Innovation Solution

Implementing flexible SRS transmission bandwidth configuration and cross-subband SRS transmission to dynamically adjust frequency-domain positions and bandwidth sizes without frequent RRC reconfigurations, enabling more efficient channel detection across multiple frequency bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If frequency-domain position or bandwidth size of SRS resource needs to be changed, then channel detection capability is improved, but RRC configuration frequency increases

Engineering Contradiction:

Improvechannel detection capabilityVSAvoidRRC configuration frequency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent introduces dynamic indication mechanisms where the network device can dynamically indicate frequency-domain positions of SRS resources through downlink control information without requiring frequent RRC reconfigurations. This allows the system to adapt to changing channel detection needs while reducing signaling overhead and configuration frequency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent enables flexible parameter configuration for SRS resources by allowing dynamic adjustment of frequency-domain positions and bandwidth sizes through new indication fields in downlink control information. This permits the system to change detection parameters without triggering full RRC reconfiguration procedures.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If cross-subband SRS transmission is introduced, then detection of channels in different frequency bands is enabled, but system complexity increases

Engineering Contradiction:

Improvecross-subband detection capabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the frequency domain into multiple subbands and introduces separate indication fields for different subband configurations. This allows cross-subband SRS transmission to be managed through structured, modular indication mechanisms that reduce the complexity of handling multi-frequency band detection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a universal indication mechanism that can handle both single-subband and cross-subband SRS transmission through a unified downlink control information structure. This multi-functional approach eliminates the need for separate complex control mechanisms for different detection scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12567929B2Method for SRS transmission resource configuration, terminal device, and network device

Publication Date: 2026.03.03 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

Implementations of the disclosure provide a method for sounding reference signal (SRS) transmission resource configuration, a terminal device, and a network device. The method includes the following. A terminal device receives first information transmitted by a network device, where the first information indicates a frequency-domain position of a first SRS resource or a frequency-domain position of a second SRS resource, and the second SRS resource is an SRS resource for cross-subband transmission. The terminal device transmits the first SRS resource or the second SRS resource to the network device according to the first information.