Inconsecutive Interference Measurement Resources for Flexible Duplex Systems
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Solution Overview
Problem
In wireless communications systems, especially those using flexible duplex technology, terminal devices in neighboring cells experience interference during uplink and downlink communications, leading to signal transmission failures. This interference is due to the mismatch between the resource elements used for measurement signals and those used for interference measurement, resulting in inaccurate measurement results.
Innovation Solution
The proposed solution involves a method for performing interference measurement between terminal devices using inconsecutive resource elements in the frequency domain. This approach allows for more accurate interference measurement by configuring the interference measurement resource to match the measurement signal resource, ensuring that the time-frequency location of the measurement resource aligns with the resource used by the terminal device to send the measurement signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible duplex technology is used to allow separate uplink and downlink transmission configuration for each cell, then the adaptability to different service requirements is improved, but cross-link interference between terminal devices in neighboring cells increases
Solution Approach 1:
The resource elements used for measurement signals are segmented into inconsecutive positions in the frequency domain. This segmentation allows the measurement resource to be specifically configured to match the actual resource elements used by terminal devices for sending measurement signals, thereby enabling accurate interference measurement even in flexible duplex scenarios where cross-link interference occurs.
2Device complexity
If conventional interference measurement methods are used with consecutive resource elements, then the device complexity is reduced, but the measurement precision deteriorates due to resource element mismatch
Solution Approach 1:
The measurement resource is configured with local quality optimization by making the resource elements inconsecutive in the frequency domain. This allows the measurement resource to precisely match the actual resource elements used by terminal devices at specific frequency positions, ensuring accurate interference measurement at the local level without requiring complex overall reconfiguration.
Data Source
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AI summary
This application provides an interference measurement method and a device, to perform interference measurement between terminal devices. The method includes: receiving, by a terminal device, configuration information of an interference measurement resource from a network side device; and performing, by the terminal device, first interference measurement by using a first measurement resource, where the first measurement resource is a proper subset of the interference measurement resource, a quantity of resource elements of the first measurement resource that are located in a same symbol is M≥2, and a spacing in frequency domain between two adjacent resource elements of the M resource elements of the first measurement resource that are located in the same symbol is more than one subcarrier.