Wireless Beam Management Using DCI and Mobility-Aware Selection
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently selecting and managing beams for downlink and uplink communications, particularly in next-generation mobile networks, which require higher speeds and reliability across diverse spectrum bands.
Innovation Solution
A wireless transmit/receive unit (WTRU) is configured to utilize beam selection based on its status, whether moving or stationary, and employs pre-configured settings or downlink control information (DCI) for beam selection, along with beam indication by DCI, to optimize beam management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam selection is performed dynamically based on real-time conditions, then communication reliability is improved, but processing complexity and time delay increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple beams with their respective parameters before actual communication begins. The beam selection process uses pre-established beam configurations and criteria to quickly determine the optimal beam without performing complex real-time analysis, thus improving reliability while controlling processing complexity.
Solution Approach 2:
The patent implements feedback mechanisms where the WTRU reports beam measurement information and communication conditions back to the network. This feedback enables dynamic beam selection based on actual channel conditions while using the feedback loop to optimize future beam choices, improving reliability through adaptive beam management.
2Reliability
If beam switching is performed frequently to adapt to mobility, then communication quality is improved, but processing time and latency increase
Solution Approach 1:
The patent applies dynamics by making the beam selection process adaptive to mobility conditions. The system dynamically adjusts beam selection criteria based on whether the WTRU is moving or stationary, using different selection mechanisms for different mobility states to optimize communication quality while minimizing processing time.
Solution Approach 2:
The patent uses preliminary action by pre-establishing multiple beam configurations and their associated parameters before communication begins. When beam switching is needed, the system can quickly select from pre-configured beams rather than performing complex real-time optimization, reducing processing time while maintaining communication quality.
3Reliability
If multiple beams are configured and monitored, then communication reliability is improved, but system complexity and resource consumption increase
Solution Approach 1:
The patent applies segmentation by dividing the beam management function into separate components: beam configuration, beam measurement, beam selection, and beam execution. This segmentation allows each component to be optimized independently and reduces overall system complexity by modularizing the beam management process.
Solution Approach 2:
The patent implements universality by designing a unified beam management framework that can handle multiple beam configurations and selection criteria through a single set of mechanisms. The system uses universal beam indication structures and processing logic that can accommodate different beam scenarios without requiring separate specialized handling for each case.
Data Source
AI summary
A wireless transmit/receive unit (WTRU) may receive a first downlink control information (DCI) in a first slot. The first DCI may include an indication of a first quasi co-location (QCL) reference. The WTRU may receive a second DCI in a second slot. The second DCI may include scheduling information for a first physical downlink shared channel (PDSCH) transmission. The WTRU may receive the first PDSCH transmission in accordance with the first QCL reference indicated by the first DCI received in the first slot and in accordance with the scheduling information for the first PDSCH transmission included in the second DCI received in the second slot.