NR Beam Reporting Triggered by Data Availability
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Solution Overview
Problem
In the inactive state of New Radio (NR) communication, terminal devices experience unnecessary power consumption and signaling overhead due to frequent connection setup and release for small and infrequent data transmissions, as beam reporting is not supported, leading to inefficient resource utilization.
Innovation Solution
A method where a terminal device selects a reference signal identifying candidate beams based on configuration information and transmits this information to a network device, allowing the network device to select a target beam for serving the terminal device, optimizing beam reporting based on available data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device resumes connected state for data transmission in inactive state, then data transmission can be performed, but power consumption and signaling overhead increase
Solution Approach 1:
The network device performs preliminary beam configuration and stores candidate beam information before the terminal device needs to transmit data. When data transmission is required, the terminal device can directly use the pre-configured beam information without establishing a full connected state, thus avoiding the power consumption and signaling overhead of connection setup while enabling data transmission.
2Productivity
If connection setup and release is performed for each data transmission, then data can be transmitted, but signaling overhead increases
Solution Approach 1:
The network device pre-configures multiple candidate beams and stores their information before the terminal device needs to transmit data. This preliminary configuration eliminates the need for connection setup and release procedures for each data transmission, significantly reducing signaling overhead while maintaining data transmission capability.
Solution Approach 2:
The invention extracts the essential beam configuration information from the full connected state setup process. By separating and storing only the necessary beam parameters (reference signals, beam directions, quality metrics) in advance, the system enables data transmission without requiring complete connection establishment, thus reducing signaling overhead.
3Device complexity
If beam reporting is not supported in inactive state, then device complexity is reduced, but beam optimization for data transmission is lost
Solution Approach 1:
The network device performs preliminary beam measurement and configuration in advance, storing reference signal information and beam quality metrics before the terminal device needs to transmit data. This preliminary action enables the terminal device to select optimal beams without requiring complex beam reporting procedures during data transmission, thus maintaining reliability while reducing complexity.
Solution Approach 2:
The system implements feedback mechanisms where the terminal device reports beam measurement results and the network device uses this feedback to optimize beam selection. The feedback loop operates efficiently by using pre-configured beam information and adjusting beam parameters based on actual transmission conditions, achieving beam optimization without requiring complex state management.
Data Source
AI summary
Embodiments of the present disclosure relate to beam reporting triggered by data transmission. A first device receives from a second device configuration information concerning at least one candidate beam for serving the first device. The first device determines whether data is available for transmission from the first device to the second device. If the data is available for transmission, the first device selects at least one first reference signal identifying the at least one candidate beam based on the configuration information. The first device transmits information concerning the selected at least one first reference signal to the second device.