Terminal Device Receive Beam Selection via Pre-configured Signal Groups
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Solution Overview
Problem
In new radio (NR) systems, terminal devices face high power consumption during cell discovery and synchronization due to the need to continuously detect periodic signals from neighboring network devices, leading to inefficient energy usage.
Innovation Solution
A signal transmission method where a terminal device receives configuration information indicating the quantity of times a network device sends a signal group, allowing it to select an optimal receive beam and reduce continuous signal detection, thereby minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device continuously detects periodic signals from neighboring network devices to discover or measure cells, then the cell discovery and measurement function is achieved, but the power consumption of the terminal device increases significantly
Solution Approach 1:
The network device pre-configures the terminal device with information about signal groups (including time-frequency resources, signal types, and repetition counts) before the terminal device needs to perform cell discovery or measurement. This allows the terminal device to efficiently detect signals without continuous monitoring, reducing power consumption while maintaining reliable cell discovery and measurement capabilities.
2Measurement precision
If the terminal device uses multiple receive beams to scan for aligned transmit beams from network devices, then the synchronization quality is improved, but the time and power required for beam scanning increases
Solution Approach 1:
The network device pre-configures the terminal device with receive beam information and indicates the quantity of times signal groups are sent. This allows the terminal device to perform targeted beam scanning with a limited number of receive beams rather than exhaustively scanning all possible beams, thereby achieving good synchronization quality with reduced scanning time and lower power consumption.
Data Source
AI summary
This application provides a signal transmission method and apparatus. The method includes: receiving, by a first device, configuration information sent by a third device and used to indicate a quantity of times for which the third device sends a signal group, in other words, learning in advance, based on the configuration information, a quantity of receive beams that can be measured, and selecting, after receiving first signals of the quantity an optimal receive beam from receive beams that have been detected, to avoid continuously detecting more first signals for selection.