Multi-Reference Signal Reception for NR Data Reliability
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Solution Overview
Problem
In new radio (NR) systems, user equipment (UE) may experience poor performance in receiving data on beams other than the designated receive beam, leading to inefficiencies when only one available receive beam is present, as existing methods only consider single-beam communication scenarios.
Innovation Solution
A signal transmission method that determines and utilizes at least two reference signal resources for receiving data, even when the scheduling offset is less than a threshold or without spatial relation parameter information, to increase the probability of successful data reception by simultaneously receiving data on multiple reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only one receive beam is used for data reception, then the device complexity is reduced, but the reliability of data reception deteriorates when data needs to be received on multiple beams
Solution Approach 1:
The terminal device pre-determines multiple first reference signal resources before data reception. When the scheduling offset is less than or equal to the threshold, the device uses these pre-determined reference signals to receive data on multiple beams simultaneously, eliminating the need for complex real-time beam switching and improving reception reliability without increasing operational complexity
Solution Approach 2:
The patent enables the terminal device to use a single receive beam configuration to receive data on multiple beams simultaneously by utilizing multiple first reference signal resources. This multi-functional capability allows one receive beam to effectively handle data from multiple transmit beams, improving reliability without requiring multiple dedicated receive beams
2Reliability
If multiple reference signal resources are used for data reception, then the probability of successful data reception is improved, but the processing complexity increases
Solution Approach 1:
The patent changes the parameter of scheduling offset (comparing against a threshold) to dynamically control the reception mode. When the offset is small (≤ threshold), the device uses multiple first reference signal resources for simultaneous reception, leveraging the time proximity to avoid complex processing while improving success probability
3Quantity of substance
If the scheduling offset is small, then the timing synchronization is improved, but the ability to receive data on multiple beams simultaneously is limited
Solution Approach 1:
The terminal device pre-determines multiple first reference signal resources in advance, associated with different spatial relations. When the scheduling offset is small, these pre-configured resources enable simultaneous reception on multiple beams without requiring additional time for resource selection or configuration, overcoming the time limitation
Data Source
AI summary
A reference signal transmission method is disclosed, the method including: determining at least two first reference signal resources; receiving a first channel based on the at least two first reference signal resources when a scheduling offset is less than or equal to a preset threshold and/or there is no spatial relation parameter information indication field in downlink control information DCI; and demodulating the first channel. When data on at least two reference signal resources needs to be received within a period of time, the method can increase a probability that a terminal device successfully receives the data.