CG-PUSCH Multi-Beam Transmission for Directional Interference Resilience
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Solution Overview
Problem
In wireless communication systems, using a single fixed transmission beam for Physical Uplink Shared Channels (PUSCHs) leads to interference when interference is present in that direction, affecting data transmission reliability, especially in unlicensed spectrum scenarios with extended CG-PUSCH designs.
Innovation Solution
Employing multiple transmission beams indicated by beam indication information for CG-PUSCH transmission, allowing data to be sent using different beams to mitigate interference and enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single fixed transmission beam is used for CG-PUSCH transmission, then the device complexity is reduced and ease of operation is improved, but the reliability deteriorates due to interference in the fixed direction
Solution Approach 1:
The patent applies dynamics by transitioning from a static single beam configuration to a dynamic multi-beam system. The base station configures multiple transmission beams and dynamically indicates which beam to use through DCI signaling, allowing the system to adapt to changing interference conditions while maintaining operational simplicity through automated beam selection
Solution Approach 2:
The patent changes the beam parameter from a fixed single value to a configurable set of multiple beams. Through RRC signaling, the base station configures multiple beam parameters (beam1, beam2, etc.), and through DCI signaling, it dynamically selects which beam parameter to use for CG-PUSCH transmission, thereby changing the system's beam parameter state to optimize for different interference scenarios
2Object-affected harmful factors
If multiple transmission beams are used for CG-PUSCH transmission, then the anti-interference ability is improved, but the device complexity increases due to beam configuration and management
Solution Approach 1:
The patent segments the transmission beam resource into multiple distinct beams (beam1, beam2, etc.) configured through RRC signaling. Each beam represents a separate transmission direction or spatial resource, allowing the system to divide the single beam resource into multiple segments that can be selectively used to avoid interference in any single direction
Solution Approach 2:
The patent implements feedback through DCI signaling, where the base station provides real-time beam selection instructions to the terminal. The DCI contains beam indication information that feedbacks the optimal beam choice based on current channel and interference conditions, enabling the terminal to select the appropriate beam without complex local decision-making
Data Source
AI summary
A data transmitting method is performed by a terminal, and includes: receiving beam indication information, wherein the beam indication information is configured to indicate a plurality of transmission beams for a configured grant Physical Uplink Shared Channel (CG-PUSCH); and transmitting data on the CG-PUSCH using the plurality of transmission beams.