Default Receiving Beam Configuration for Wireless Downlink Scheduling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing downlink transmissions, particularly in scenarios where data and control information need to be received using different receiving beams, and there is a need for default receiving beams to be used if control signaling is received within a specific time threshold.
Innovation Solution
The system employs a method where default receiving beams are configured by a base station for use in receiving downlink transmissions if the control signaling is received within a threshold time period, and these default beams can be used even if the transmission spans multiple transmission occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different receiving beams are used for data and control information, then reception reliability is improved, but beam management complexity increases
Solution Approach 1:
The base station configures default receiving beams in advance for the wireless device to use when control signaling is received within the threshold time period. This preliminary configuration eliminates the need for real-time beam selection, reducing beam management complexity while ensuring reliable reception through pre-optimized beam paths.
Solution Approach 2:
The wireless device autonomously determines whether to use default receiving beams or other receiving beams based on the timing of control signaling reception. This self-service mechanism reduces the signaling overhead and complexity of beam management by enabling the device to make autonomous decisions without extensive network coordination.
2Productivity
If default receiving beams are used for transmissions within threshold time period, then reception efficiency is improved, but beam flexibility is reduced
Solution Approach 1:
The system dynamically switches between default receiving beams and other receiving beams based on the timing of control signaling reception. When control signaling is received within the threshold time period, default beams are used for efficient reception; otherwise, other receiving beams are used. This dynamic adaptation maintains beam flexibility while optimizing reception efficiency for time-critical transmissions.
Solution Approach 2:
The base station configurable threshold time period parameter allows the system to adapt to different service requirements. By adjusting this parameter, the system can balance between using default receiving beams (for efficiency) and allowing other receiving beams (for flexibility) based on the specific timing requirements of different transmission scenarios.
3Reliability
If multiple default receiving beams are configured, then reception reliability is improved, but configuration overhead increases
Solution Approach 1:
The base station configures a limited number of default receiving beams (one or more) rather than configuring all possible beams. This partial configuration approach provides sufficient reception reliability for time-critical transmissions while minimizing configuration overhead. The system uses only the necessary subset of beams rather than the complete set.
Data Source
AI summary
A wireless device may receive one or more repetitions of a downlink transmission. The wireless device may use one or more default receiving beams for receiving transmission. A quantity of default receiving beams to be used by the wireless device may be indicated by a base station.