SBFD Resource Setting for SRS Measurement and Interference Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing traffic loads for low latency and interference between downlink and uplink directions, particularly in semi-static or dynamic TDD configurations, and the FDD scheme limits frequency resource utilization.
Innovation Solution
Implementing a method for resource configuration in wireless communication systems that includes measuring the reference signal received power (RSRP) of a sounding reference signal (SRS) within a subband full duplex (SBFD) time duration, using measurement gaps or downlink rate-matching resources, and reporting the measurement results to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-static or dynamic TDD UL/DL configuration is used, then downlink and uplink transmission can be supported, but transmission time delay increases and interference between operators occurs
Solution Approach 1:
The patent implements dynamic TDD configuration where the base station can flexibly adjust uplink-downlink slot configurations in real-time based on traffic demands. This allows the system to transition from static to dynamic time-division multiplexing, reducing transmission delays by optimizing resource allocation adaptively rather than following fixed patterns.
Solution Approach 2:
The patent introduces full-duplex operation as a new dimension alongside traditional half-duplex TDD modes. By enabling simultaneous uplink and downlink transmissions in certain slots, the system adds a temporal overlap dimension that breaks the sequential transmission constraint, thereby reducing overall transmission time delay.
2Productivity
If existing TDD configuration is used, then downlink and uplink communication can be established, but interference between operators occurs
Solution Approach 1:
The patent applies local quality by allowing different slots within the same cell to have different uplink-downlink configurations. Specifically, some slots are configured as downlink-heavy, others as uplink-heavy, and some as flexible, enabling localized optimization of resource allocation to minimize inter-operator interference while maintaining overall communication capability.
Solution Approach 2:
The patent changes the configuration parameters of time slots dynamically, allowing the base station to adjust the number of downlink and uplink symbols within each slot based on real-time conditions. This parameter flexibility enables the system to adapt to varying interference environments and traffic patterns, reducing operator interference.
3Ease of operation
If FDD scheme is used, then downlink and uplink transmission can be performed simultaneously on different frequencies, but frequency resource utilization efficiency decreases
Solution Approach 1:
The patent merges the advantages of FDD (simultaneous uplink-downlink transmission) and TDD (flexible resource allocation) by implementing full-duplex slots where both directions can transmit at the same time. This combination allows the system to achieve FDD-like parallel transmission while maintaining TDD's frequency resource flexibility, thereby improving overall utilization efficiency.
Solution Approach 2:
The patent creates a universal resource allocation framework that can operate in multiple modes: traditional half-duplex TDD, full-duplex TDD, and flexible configurations. This multi-functionality allows the same time-frequency resources to serve different purposes under different conditions, maximizing resource utilization efficiency while maintaining simultaneous transmission capability when needed.
4Measurement precision
If measurement gap is used for SRS measurement, then accurate RSRP measurement can be obtained, but measurement time duration increases
Solution Approach 1:
The patent applies preliminary action by configuring rate-matching resources in advance, where the base station pre-allocates specific time-frequency resources for SRS transmission that are known to the UE. This allows the UE to perform measurements during these pre-configured opportunities without requiring additional measurement gaps, thereby reducing measurement time while maintaining accuracy.
Data Source
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AI summary
A method of operating a user equipment in a wireless communication system is provided. The method includes receiving, from a base station, a command to measure a reference signal received power (RSRP) of a sounding reference signal (SRS) of another UE within a time duration in which a subband full duplex (SBFD) is available; receiving, from the base station, configuration information on a measurement gap or a downlink rate-matching resource within a measurement time duration of the SRS; receiving, the SRS in the measurement gap or the downlink rate-matching resource; and transmitting, to the base station, a report message for a measurement result of the RSRP for the SRS.