5G NR Beam State Activation for Clear DL and UL Updates
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Solution Overview
Problem
The challenge in 5G NR wireless communication systems is the unclear activation of beam states for downlink, uplink, or combined downlink and uplink transmissions, particularly in multiple-TRP scenarios, and the issue of beam state updating when different types or usage modes correspond to the same codepoint ID in old and new MAC CEs.
Innovation Solution
A flexible beam update mechanism is introduced, where a wireless communication device receives signaling to activate beam state codepoints, determines beam states based on these codepoints, and applies them to target transmissions, utilizing MAC CEs and DCIs to manage beam states for downlink, uplink, or both, with clear indications and updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If beam state codepoints are activated for multiple directions (DL, UL, combined) in 5G NR systems, then the system supports more flexible and comprehensive beam management, but the complexity of managing and updating beam states across different transmission types increases
Solution Approach 1:
The patent segments beam state codepoints by direction type (DL-only, UL-only, combined DL-UL) and organizes them in a structured format within MAC CE signaling. This segmentation allows the system to manage different beam states independently according to their specific directional requirements, reducing the complexity of handling all beam states uniformly while maintaining comprehensive adaptability across multiple transmission directions.
2Productivity
If the same codepoint ID is used for different beam state types in old and new MAC CEs, then signaling efficiency is maintained, but ambiguity arises in beam state updating when different types correspond to the same codepoint ID
Solution Approach 1:
The patent applies local quality by associating specific directional characteristics with each codepoint based on its position and the activation pattern in the MAC CE. Instead of relying solely on codepoint ID, the system determines beam state type locally by examining which directions (DL, UL, or both) are activated for each codepoint, thereby preserving type information without sacrificing signaling efficiency.
3Reliability
If beam states are updated frequently to adapt to changing transmission conditions, then communication reliability improves, but the overhead of beam state management and potential for errors increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring beam state codepoints with their directional characteristics before actual beam switching occurs. The MAC CE signaling activates and defines the properties of multiple beam state codepoints in advance, allowing the system to quickly switch between pre-defined beam states without performing complex real-time beam state management, thus improving reliability while reducing operational overhead.
Data Source
AI summary
Systems and methods for wireless communication systems are disclosed. In one aspect, the wireless communication method includes receiving, by a wireless communication device from a network, first signaling. The first signaling activates one or more beam state codepoints, each of the one or more beam state codepoints includes one or more beam states for a direction. The direction includes downlink, uplink or both downlink and uplink. The method further includes determining, by the wireless communication device, at least one beam state according to the one or more beam state codepoints, and applying, by the wireless communication device, the at least one beam state to a target transmission based on the direction of the at least one beam state. The target transmission includes at least one of a downlink transmission or an uplink transmission.