Terminal Device Time-Frequency Resource Validation for 5G Interference
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Solution Overview
Problem
In 5G communications systems, the interference and resource preemption issues between different services, such as eMBB and URLLC, can lead to reduced reliability in channel estimation and data demodulation for terminal devices when they directly use signals received on time-frequency resources originally allocated for other services.
Innovation Solution
A communication method where terminal devices receive indication information from the network device to determine whether a third time-frequency resource is included in the first time-frequency resource, allowing them to decide whether to use the signal received on the third time-frequency resource, thereby avoiding the use of unreliable signals for channel estimation or demodulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device directly uses the received signal for channel estimation, channel detection, or data demodulation on the time-frequency resource used to receive the reference signal, then the operation is simple and fast, but the reliability of channel estimation, channel detection, or data demodulation is reduced due to interference or resource preemption
Solution Approach 1:
The terminal device performs preliminary determination of whether the time-frequency resource is valid before using the received signal for channel estimation or data demodulation. Based on indication information from the network device, the terminal device预先 determines if the reference signal resource is available, preventing unreliable signal usage before the actual processing occurs.
Solution Approach 2:
The patent introduces indication information as an intermediary mechanism between the network device and terminal device. This indication information mediates the terminal device's decision-making process by providing external validation about the reliability of the time-frequency resource, allowing the terminal to adjust its signal processing accordingly.
2Measurement precision
If the terminal device uses the signal received on the time-frequency resource for channel estimation, then the process is efficient, but the precision of channel estimation is reduced when the resource is occupied by another service
Solution Approach 1:
The terminal device performs preliminary validation of the time-frequency resource using indication information before conducting channel estimation. This preliminary action ensures that only reliable resources are used for estimation, preventing precision degradation while maintaining efficiency by avoiding post-processing detection of failed estimations.
3Reliability
If the terminal device directly demodulates data using the received reference signal, then the data processing is fast, but the data demodulation may fail when the reference signal resource is preempted
Solution Approach 1:
The terminal device performs preliminary validation of the reference signal resource using indication information before attempting data demodulation. This preliminary check prevents wasted demodulation attempts on preempted resources, improving overall success rate while the validation time is minimized through efficient indication information processing.
Data Source
AI summary
A communication method, including receiving, by a terminal device, first indication information sent by the network device, where the first indication information indicates a first time-frequency resource used to receive a reference signal of the terminal device, receiving, by the terminal device, second indication information sent by the network device, where the second indication information indicates a second time-frequency resource, and determining, by the terminal device according to the second indication information, whether a third time-frequency resource is included in the first time-frequency resource, where the third time-frequency resource is at least one of a time-frequency resource included in both of the first time-frequency resource and the second time-frequency resource, a time-frequency resource adjacent to the second time-frequency resource, a time-frequency resource whose interval from the second time-frequency resource is less than a preset first interval, or a time-frequency resource related to the second time-frequency resource.