SRS Resource Configuration for MIMO Efficiency
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently supporting uplink/downlink multi-input multi-output (MIMO) transmission and require an effective sounding method for user equipment to manage resource allocation and channel reciprocity.
Innovation Solution
The proposed solution involves an efficient sounding procedure for user equipment, including the configuration and signaling of SRS resources, particularly for aperiodic and semi-persistent SRS transmission types, to enhance MIMO transmission capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional sounding methods are used in wireless communication systems, then basic uplink transmission support is provided, but efficient support for uplink/downlink MIMO transmission and resource management is insufficient
Solution Approach 1:
The patent segments the sounding reference signal (SRS) resources into multiple types (periodic, aperiodic, semi-persistent) with distinct configuration parameters. Each SRS resource type is independently configurable with specific parameters including resource allocation, frequency hopping, and transmission timing. This segmentation allows the system to optimize sounding procedures for different MIMO transmission scenarios without requiring complete reconfiguration of the sounding mechanism.
Solution Approach 2:
The patent introduces dynamic SRS resource allocation mechanisms where the base station can flexibly configure and reconfigure SRS resources based on real-time channel conditions and traffic requirements. The system supports dynamic switching between different SRS transmission types and enables adaptive adjustment of SRS parameters such as bandwidth, frequency position, and transmission power. This dynamic approach allows efficient MIMO support while managing complexity through on-demand resource allocation rather than static pre-configuration.
2Productivity
If SRS resources are configured for aperiodic and semi-persistent transmission types, then transmission efficiency is improved, but resource management complexity increases
Solution Approach 1:
The patent designs a unified SRS resource configuration framework that handles periodic, aperiodic, and semi-persistent transmission types through a common set of configuration parameters and procedures. The base station uses a single configuration interface to manage all SRS resource types, with each type simply activating different transmission behaviors based on the same underlying resource pool. This universal approach improves transmission efficiency across all SRS types while preventing resource management complexity from escalating, as the system doesn't require separate management mechanisms for each transmission type.
Solution Approach 2:
The patent implements preliminary configuration of SRS resource pools and parameter sets that can be reused across multiple transmission instances. The base station pre-configures resource allocations, frequency hopping patterns, and transmission parameters that remain valid for multiple SRS transmissions. This preliminary action reduces the complexity of real-time resource management by establishing reusable templates, allowing the system to efficiently support aperiodic and semi-persistent transmission without requiring complex on-the-fly configuration decisions.
Data Source
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AI summary
One embodiment according to the present invention, with respect to a sounding method of user equipment (UE) in a wireless communication system, comprises the steps of: receiving configuration of one or more sounding reference signal (SRS) resource sets from a base station; receiving, from the base station, activation command information commanding the SRS transmission activation of a particular SRS resource set from among the one or more SRS resource sets; and transmitting, to the base station, the SRS corresponding to the particular SRS resource set, wherein the reference signal, for which a spatial relationship is assumed for each SRS resource included in the particular SRS resource set, can be determined on the basis of the activation command information.