NR Data Transmission Reliability via Multi-Beam Control Signaling
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Solution Overview
Problem
Existing data transmission methods in new radio (NR) technology face reliability issues due to the use of single beam directions for downlink control signaling, leading to poor reliability in data transmission.
Innovation Solution
Implementing a method where the same downlink control signaling is sent using a same time domain resource on multiple beam directions with different frequency domain resources, allowing for retransmission of the signaling through multiple transmission/reception points (TRPs) or panels, thereby improving transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single beam direction is used for downlink control signaling, then device complexity is reduced, but transmission reliability deteriorates
Solution Approach 1:
The patent segments the downlink control signaling transmission by dividing frequency domain resources into multiple parts, each associated with different beam directions. The network device configures multiple frequency domain resources (e.g., different physical resource blocks) for the same time domain resource, allowing the terminal to receive control signaling through multiple beams simultaneously, thereby improving transmission reliability without significantly increasing device complexity
Solution Approach 2:
The patent introduces frequency domain dimensionality to the beam management system. By mapping different frequency domain resources to different beam directions, the system enables multi-beam transmission in the frequency domain while maintaining time domain synchronization. This dimensional approach allows reliable control signaling transmission without requiring complex multi-time-slot coordination
2Reliability
If multiple beam directions are used for downlink control signaling, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple frequency domain resources into a unified control resource set (CORESET) structure. By configuring multiple frequency domain resources with the same time domain resource parameters under a single CORESET configuration, the network device enables multi-beam transmission while maintaining configuration simplicity. The terminal processes these merged resources through a standardized procedure, avoiding the need for separate configuration management for each beam
Solution Approach 2:
The patent creates a universal configuration framework where a single CORESET can support multiple frequency domain resources and multiple beam directions. The TCI state configuration universally applies to all frequency domain resources within the CORESET, allowing the same configuration structure to serve multiple transmission purposes simultaneously, thereby reducing overall system complexity while maintaining high reliability
3Productivity
If same time domain resource is used for multiple frequency domain resources, then resource efficiency is improved, but signal interference increases
Solution Approach 1:
The patent applies local quality by assigning different frequency domain resources (different physical resource blocks) to different beam directions while maintaining the same time domain resource. Each frequency domain resource is optimized for its specific beam direction, allowing efficient resource utilization. The terminal uses beam-specific receiving beams to process signals on different frequency resources, minimizing inter-beam interference while maximizing resource efficiency
Data Source
AI summary
A data transmission method is provided. The data transmission method is performed by a network device and includes: configuring a plurality of different frequency domain resources, and configuring a same time domain resource for the plurality of different frequency domain resources; and sending a same downlink control signaling on a plurality of beams, using the same time domain resource with the plurality of different frequency domain resources.