Wireless Resource Configuration for Interference Reduction
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Solution Overview
Problem
In wireless communication systems, especially in new radio (NR) systems, the simultaneous reception of downlink (DL) reference signals and uplink (UL) physical channels can interfere with each other due to the allocation of whole blocks of time-frequency resources, leading to reduced system performance.
Innovation Solution
A method is introduced where a first resource is configured or indicated such that it is not used for the transmission or reception of a first physical channel, allowing for the reduction of interference between DL and UL signals by determining whether to transmit or receive the physical channel based on the availability of non-overlapping resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If whole blocks of time-frequency resources are allocated via DCI to save overhead, then DCI overhead is reduced, but interference occurs between DL reference signals and UL physical channels
Solution Approach 1:
The patent segments the time-frequency resources by introducing rate-matching patterns that divide the resource block into regions where data is transmitted and regions where reference signals or control channels are transmitted. This segmentation allows the terminal to perform rate-matching around specific resources, enabling fine-grained resource allocation that avoids interference while maintaining efficient DCI overhead.
Solution Approach 2:
The patent applies local quality by allowing different parts of the time-frequency resource block to have different transmission qualities and purposes. Specifically, certain resource elements are designated for high-priority signals (like reference signals or control channels) while others are used for data transmission. The rate-matching pattern ensures that data transmission adapts to the local requirements of each resource element, preventing interference in critical areas.
2Productivity
If data is transmitted on resources allocated via DCI, then resource utilization is improved, but data transmission interferes with reception of reference signals and control information
Solution Approach 1:
The patent applies preliminary action by pre-configuring rate-matching patterns that identify which resources should be excluded from data transmission. The terminal device is provided with information about these patterns in advance, allowing it to pre-determine which resource elements will be used for reference signals or control channels. This preliminary configuration ensures that data transmission automatically avoids these critical resources, maintaining both high resource utilization and reliable reception of control information.
3Reliability
If periodic transmission of reference signals and control channels is maintained, then synchronization and channel measurement are ensured, but system performance decreases due to interference with data transmission
Solution Approach 1:
The patent introduces dynamics by making the resource allocation flexible through rate-matching patterns. Instead of fixed periodic transmission that causes constant interference, the system dynamically adapts data transmission around the reference signals and control channels using rate-matching. The terminal device adjusts its rate-matching behavior based on the configured patterns, allowing periodic transmission of critical signals to continue while data transmission is dynamically routed around these signals, thereby maintaining both reliability and system performance.
Data Source
AI summary
A method for wireless communication, a terminal device, and a network device are provided in embodiments of the disclosure. The method includes receiving first information. The first information is used to configure or indicate a first resource, and the first resource is not used for transmission or reception of a first physical channel.