PDSCH and SSB Reception Prioritization in 5G NR
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Solution Overview
Problem
In 5G and NR wireless telecommunication systems, there is a need to determine or select between Physical Downlink Shared Channel (PDSCH) and Synchronization Signal / Physical Broadcast Channel (SSB) reception, especially when resource allocation overlaps, to optimize data reception and measurement prioritization.
Innovation Solution
The method involves defining specific rules based on quasi-co-location (QCL) assumptions and reporting periods to prioritize either PDSCH or SSB reception, such as prioritizing PDSCH when not QCL'ed with SSB and the time until the next reporting period is sufficient, or prioritizing SSB when the reporting period precedes the next SSB transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PDSCH reception is prioritized over SSB reception when resources overlap, then network throughput and data reception efficiency are improved, but measurement accuracy and beam failure detection capability deteriorate
Solution Approach 1:
The patent changes the parameter of reception prioritization based on the SMTC window parameter. Outside the SMTC window, PDSCH reception is prioritized to improve throughput. Inside the SMTC window, SSB reception is prioritized to ensure measurement accuracy. This dynamic parameter adjustment resolves the contradiction between throughput and measurement accuracy.
2Reliability
If SSB reception is prioritized over PDSCH reception when resources overlap, then measurement and beam management reliability are improved, but network throughput and data reception efficiency deteriorate
Solution Approach 1:
The patent dynamically adjusts the prioritization parameter based on the SMTC window configuration. During SMTC windows, SSB reception is prioritized to ensure reliable beam measurements. Outside SMTC windows, the system switches to prioritizing PDSCH reception to maintain high network throughput. This time-based parameter switching resolves the contradiction between reliability and productivity.
3Productivity
If the system supports both PDSCH and SSB reception simultaneously when resources do not overlap, then resource utilization efficiency is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent applies different reception strategies to different time resources based on local conditions. During SMTC windows, the system allocates resources specifically for SSB reception with appropriate processing. Outside SMTC windows, resources are allocated for PDSCH reception. This localized resource allocation and processing approach improves overall resource utilization while avoiding unnecessary complexity in each specific time period.
Data Source
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AI summary
Systems, methods, apparatuses, and computer program products for selecting or prioritizing between a physical downlink shared channel (PDSCH) and synchronization signal block (SSB) reception are provided. One method may include, when outside a SMTC window and when PDSCH resource allocation overlaps with an occupied SSB location, selecting between the PDSCH and SSB reception according to defined rules.