Aperiodic CSI-RS Resource Configuration via Offset and Triggering
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving channel state information reference signals (CSI-RS), particularly in aperiodic scenarios, which affects the performance of 5G communication scenarios like eMBB, URLLC, and mMTC, due to high signaling overhead and complex resource management.
Innovation Solution
A method and apparatus for receiving an aperiodic CSI-RS resource in a wireless communication system, where periodicity information is not used for the aperiodic CSI-RS, and configuration information with offset information is applied to receive the aperiodic CSI-RS resource, allowing for flexible scheduling and reduced signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If periodic CSI-RS resources are configured with periodicity information, then resource management becomes systematic, but signaling overhead increases and flexibility decreases for aperiodic scenarios
Solution Approach 1:
The patent extracts the periodicity information requirement specifically for aperiodic CSI-RS resources, separating it from the general CSI-RS configuration. By removing the periodicity information field for aperiodic resources while retaining it for periodic resources, the patent reduces signaling overhead without compromising the systematic management needed for periodic operations.
Solution Approach 2:
The patent introduces dynamic triggering mechanisms for aperiodic CSI-RS resources using DCI (Downlink Control Information) formats. This allows the system to adapt resource allocation dynamically based on actual channel conditions and traffic requirements, enhancing flexibility without requiring predetermined periodic configurations for all resources.
2Device complexity
If periodicity information is used for all CSI-RS resources, then resource allocation becomes simplified, but it increases complexity in managing both periodic and aperiodic resources uniformly
Solution Approach 1:
The patent segments the CSI-RS resource configuration into distinct types: periodic resources that require periodicity information and aperiodic resources that use triggering mechanisms. This segmentation allows each resource type to be managed with appropriate parameters, reducing overall system complexity while maintaining full adaptability for both periodic and aperiodic scenarios.
Solution Approach 2:
The patent creates a universal CSI-RS resource configuration framework that can handle both periodic and aperiodic resources through a common resource indicator field in DCI. This multi-functional approach allows the same DCI structure to trigger both types of resources appropriately, simplifying the management architecture while supporting diverse resource allocation patterns.
Data Source
AI summary
The present invention discloses a method for a terminal to receive an aperiodic channel state information-reference signal (CSI-RS) resource in a wireless communication system. In particular, the method is characterized by: receiving period information for a periodic CSI-RS resource and first offset information; receiving configuration information related to an aperiodic CSI-RS resource set including at least one aperiodic CSI-RS resource; and receiving the at least one aperiodic CSI-RS resource on the basis of the configuration information and the first offset information, wherein the period information is not used for the at least one aperiodic CSI-RS resource.