Multi-Panel Beam Indication for Reliable 5G NR Data Transmission
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Solution Overview
Problem
In a 5G NR system with multiple antenna panels, mismatched sending and receiving beams between a base station and a terminal can lead to data transmission failures, affecting the success rate of data transmission.
Innovation Solution
A data transmission method and apparatus that utilizes MAC signaling and DCI to activate beam indication information for multiple antenna panels, enabling the terminal to determine and use the correct beams for data transmission based on mapping information, improving data transmission success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antenna panels are used to transmit data through different beams, then the data transmission capacity and coverage are improved, but the beam alignment complexity and transmission failure risk increase
Solution Approach 1:
The patent segments the beam indication process by introducing separate beam indication information for each antenna panel, with each panel having its own beam indication codeword. This segmentation allows independent beam management for each panel, reducing overall alignment complexity while maintaining multi-panel transmission capacity.
Solution Approach 2:
The patent introduces mapping information as an intermediary that establishes correspondence between beam indication codewords and actual beam parameters. This mapping mechanism simplifies the beam alignment process by providing a direct lookup relationship, eliminating complex real-time beam selection and reducing transmission failure risk.
2Reliability
If beam indication information is activated for multiple antenna panels, then the data transmission success rate is improved, but the signaling overhead increases
Solution Approach 1:
The patent makes the beam indication mechanism universal across multiple antenna panels by using a standardized beam indication information structure that can be applied to any number of panels. The same MAC signaling and DCI formats are reused for each panel, reducing the need for separate signaling protocols and minimizing overall overhead while maintaining high transmission success rates.
Solution Approach 2:
The patent changes the parameter representation by using compact beam indication codewords that map to multiple possible beam configurations. This parameter encoding approach reduces the number of bits required for beam indication compared to explicit beam parameter signaling, thereby reducing signaling overhead while maintaining reliable beam alignment.
3Measurement precision
If mapping information is introduced to indicate correspondence between beam indication codeword and activated beam indication information, then the beam selection accuracy is improved, but the MAC signaling complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-establishing the mapping relationship between beam indication codewords and beam parameters through MAC signaling. This advance configuration allows the terminal to quickly determine the correct beam without complex real-time calculations, improving beam selection accuracy while the mapping structure itself remains relatively simple for implementation.
Data Source
AI summary
A data transmission method and apparatus, and a storage medium are provided. The method includes: receiving by a terminal a MAC signaling sent by a base station, in which the MAC signaling is configured to activate beam indication information respectively corresponding to m antenna panels; receiving by the terminal the DCI sent by the base station, in which the DCI includes a first beam indication codeword; determining by the terminal target beam indication information corresponding to a target antenna panel in the m antenna panels based on the first beam indication codeword and the mapping information; determining by the terminal a target beam used when the target antenna panel is adopted to transmit data based on the target beam indication information; and using by the terminal the target beam corresponding to the target antenna panel to transmit data with the base station.