Beam Correspondence Reporting for 5G Terminal Devices
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Solution Overview
Problem
In 5G communications, terminal devices without beam correspondence capability continue to transmit information using inappropriate transmit-receive beam pairs, leading to reduced communication efficiency and potential failure in data reception by the base station due to beam deviation, especially in high-frequency bands with significant path attenuation.
Innovation Solution
A method and apparatus for reporting beam correspondence capability, where the terminal device determines its capability based on pre-obtained information and conditions, such as environment parameters and cell IDs, and reports this status to the base station, allowing for appropriate beam management and re-determination of transmit-receive pairs to maintain communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the terminal device continues to transmit information using a transmit-receive beam pair determined by beam correspondence capability, then the terminal device maintains simple transmission procedures, but communication efficiency is reduced and beam deviation occurs leading to potential failure in data reception
Solution Approach 1:
The terminal device performs preliminary detection of beam correspondence capability status before transmission. By detecting whether the beam correspondence capability is valid in advance through downlink reference signals and comparing beam directions, the terminal device can determine the appropriate transmission mode (beam correspondence or beam management) beforehand, avoiding inefficient transmissions and ensuring communication effectiveness.
Solution Approach 2:
The terminal device dynamically switches between two transmission modes based on the detected beam correspondence capability status. When beam correspondence capability is valid, the device uses the simpler beam correspondence mode; when invalid, it switches to beam management mode. This dynamic adaptation allows the system to optimize between operational simplicity and communication efficiency based on real-time conditions.
2Device complexity
If the terminal device uses beam correspondence capability to determine transmit-receive beam pairs, then the transmission process is simplified, but the beam may deviate from the base station causing communication failure
Solution Approach 1:
The terminal device performs preliminary detection of beam correspondence capability validity before actual data transmission. By detecting the validity status in advance through downlink reference signals and beam direction comparison, the device ensures that only reliable beam pairs are selected, preventing beam deviation issues and ensuring data reception reliability.
Solution Approach 2:
The terminal device uses feedback from downlink reference signal reception and beam direction comparison to determine whether beam correspondence capability is valid. This feedback mechanism allows the device to continuously monitor beam alignment status and switch transmission modes accordingly, ensuring reliable communication while managing complexity appropriately.
3Reliability
If the terminal device performs beam management to determine appropriate transmit-receive beam pairs, then communication quality is improved, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The terminal device dynamically selects between two operation modes based on beam correspondence capability detection. When the capability is valid, the device uses the quick beam correspondence mode without full beam management. When invalid, it performs comprehensive beam management. This dynamic selection reduces unnecessary beam management operations and time consumption while maintaining communication quality when needed.
Solution Approach 2:
The terminal device performs preliminary detection of beam correspondence capability status before initiating beam management procedures. By detecting whether the simpler beam correspondence mode is valid in advance, the device可以避免不必要的beam management过程，从而减少时间消耗，同时在需要时确保通信质量。
Data Source
AI summary
A beam correspondence capability reporting method includes determining, by a terminal device based on first determining information and a first determining condition, whether the terminal device has a beam correspondence capability. When the terminal device has the beam correspondence capability and a beam strength of a downlink receive beam is not less than a first strength threshold, determining, by the terminal device, an uplink transmit beam using the beam correspondence capability. Transmitting, by the terminal device, first communication information using the uplink transmit beam, receiving, by the terminal device, n transmission requests for the first communication information, performing detaching, by the terminal device, and reporting, by the terminal device, first capability information in a process of re-accessing a base station, indicating that the terminal device does not have the beam correspondence capability.