Beam Management Timing Offsets for B52 GHz Reliability
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Solution Overview
Problem
In beyond 52.6 GHz frequency range communications, existing techniques face challenges in managing beam switching and default beam selection due to uncertainties in user equipment (UE) processing timelines, leading to inefficiencies in data channel transmission and potential capacity reduction in wireless networks.
Innovation Solution
The proposed method involves a user equipment (UE) receiving downlink control information (DCI) to determine a receive beam based on quasi co-location (QCL) parameters, scheduling offset, and minimum time offset, with optional use of default beams and control resource sets (CORESETs) configured via radio resource control (RRC) signaling, to manage beam switching and selection effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam switching is performed based on existing techniques in B52 GHz communications, then data channel transmission can be scheduled, but timing uncertainties in UE processing lead to reduced reliability and potential capacity reduction
Solution Approach 1:
The patent applies preliminary action by defining and configuring minimum time offsets (K0_min, K2_min, K3_min) in advance through RRC signaling. These pre-configured time parameters ensure that the UE has sufficient processing time before beam switching and data transmission, eliminating timing uncertainties and improving reliability without causing capacity reduction.
Solution Approach 2:
The patent changes the timing parameters by introducing minimum time offsets (K0_min, K2_min, K3_min) that are configured via RRC signaling. These parameter changes ensure that the scheduling offset meets the minimum processing time requirements, resolving the timing uncertainty issue while maintaining system capacity.
2Productivity
If beam switching is performed without clarified rules, then flexibility is maintained, but beam management efficiency decreases and system capacity is reduced
Solution Approach 1:
The patent segments the beam management process into distinct phases with specific minimum time offsets: K0_min for PDSCH scheduling, K2_min for PUSCH scheduling, and K3_min for HARQ-ACK feedback. This segmentation provides clear, manageable rules for each phase, improving beam management efficiency without excessive complexity.
Solution Approach 2:
The patent introduces dynamic beam switching capabilities where the UE can switch between different receive beams based on configured minimum time offsets. The beam switching behavior is dynamically adjusted based on the scheduled timing and configured parameters, improving efficiency while maintaining manageable complexity through standardized rules.
3Speed
If scheduling offset is reduced to improve data transmission speed, then latency decreases, but UE processing time becomes insufficient leading to timing errors
Solution Approach 1:
The patent changes the scheduling offset parameter by enforcing minimum time offset requirements (K0_min, K2_min, K3_min) configured via RRC signaling. This ensures that even when scheduling aggressive timing, the UE always has sufficient processing time, maintaining timing precision while enabling high-speed data transmission.
Solution Approach 2:
The patent incorporates feedback mechanisms where the UE monitors timing relationships and the network adjusts scheduling based on configured minimum offsets. This feedback loop ensures that timing precision is maintained while achieving high transmission speeds through optimized scheduling.
Data Source
AI summary
Embodiments of the present disclosure provide methods and apparatuses in the field of beam management. Some embodiments receive a downlink control information (DCI), the DCI scheduling one or more data channel transmissions. Some embodiments determines, a receive beam based on a time duration for quasi co-location (QCL), a scheduling offset, and a minimum time offset. Some embodiments receive using the receive beam, data symbols from the one or more data channel transmissions scheduled by the DCI.