Beam Recovery Scheduling Request Latency
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Solution Overview
Problem
The increasing number of user equipment (UEs) and data volume in wireless communication systems poses challenges in efficiently transmitting and receiving data using limited radio resources, while also requiring reduced latency and support for high-frequency bands and smart devices.
Innovation Solution
A method and apparatus for performing a beam recovery procedure in a wireless communication system, where a user equipment (UE) efficiently manages uplink/downlink signals and control information using limited resources, reducing latency and enabling efficient data transmission/reception, particularly in systems supporting new radio access technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam recovery procedure is implemented to maintain communication quality, then reliability is improved, but latency increases due to beam switching and signal re-establishment
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple candidate beams and their associated parameters before actual communication occurs. When beam failure is detected, the UE can immediately switch to pre-prepared candidate beams without waiting for beam search and selection, thereby reducing latency while maintaining communication reliability.
Solution Approach 2:
The patent implements feedback mechanisms where the UE monitors beam quality metrics and provides feedback to the network about beam performance. This enables dynamic beam selection and optimization, allowing the system to adapt to changing conditions and recover from beam failures efficiently by leveraging real-time information about beam performance.
2Area of stationary object
If multiple beams are used to improve coverage and reliability, then communication coverage is improved, but device complexity increases due to beam management overhead
Solution Approach 1:
The patent applies segmentation by dividing the beam management function into distinct components: beam configuration, beam measurement, beam selection, and beam switching. This modular approach allows each component to be optimized independently and simplifies the overall beam management process by assigning specific responsibilities to different system elements.
Solution Approach 2:
The patent introduces intermediary structures such as beam measurement reports and beam indication information that mediate between the UE and the network. These intermediaries simplify the interaction by providing standardized interfaces for beam information exchange, reducing the complexity of direct beam management protocols.
3Reliability
If beam switching is performed to recover from failure, then reliability is improved, but throughput decreases due to interruption during beam switching
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple candidate beams with their parameters before actual communication occurs. When beam failure is detected, the UE can immediately switch to pre-prepared candidate beams without waiting for beam search and selection, thereby reducing latency while maintaining communication reliability.
Solution Approach 2:
The patent implements continuity of useful action by ensuring that beam switching is performed in a continuous and uninterrupted manner. The system maintains ongoing beam measurements and quality assessments, allowing for seamless beam transitions that minimize interruption to data transmission and preserve throughput during recovery operations.
Data Source
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AI summary
The user equipment transmits a scheduling request by means of a scheduling request channel resource configured in the user equipment for beam recovery when uplink data is generated in the user equipment or when paging data is received therefor from a base station while the user equipment is in a discontinuous reception (DRX) mode. The user equipment receives an uplink grant in response to the scheduling request.