PDCCH Candidate Allocation for 5G Terminal Throughput
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Solution Overview
Problem
The challenge in next-generation mobile communication systems is determining appropriate physical downlink control channel (PDCCH) candidates for repetition, as inappropriate determination can lead to reduced throughput and deteriorated communication quality.
Innovation Solution
A terminal with a control section that determines whether two PDCCH candidates can be allocated within the same slot or span, associated with search space sets, and linked to each other, and if not, determines allocation from a plurality of PDCCH candidates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PDCCH candidates are determined without proper allocation rules for repetitions, then the system can support high data rates and capacity, but throughput is reduced and communication quality deteriorates
Solution Approach 1:
The patent implements dynamic PDCCH candidate allocation by introducing a determination rule that adapts to repetition scenarios. The control section dynamically decides whether to allocate two PDCCH candidates based on whether they are linked and fall within the same slot/span, rather than using static allocation. This dynamic approach optimizes throughput while maintaining communication quality by flexibly managing PDCCH resources according to actual repetition needs.
2Reliability
If two PDCCH candidates are allocated within the same slot or span for linked search space sets, then appropriate PDCCH allocation is achieved, but the complexity of determining allocation increases
Solution Approach 1:
The patent segments the PDCCH candidate determination process into distinct cases: (1) when two PDCCH candidates are linked and within the same slot/span, and (2) when they are not. This segmentation simplifies the overall complexity by breaking down the determination logic into manageable, rule-based segments rather than requiring complex continuous optimization algorithms.
Solution Approach 2:
The patent applies preliminary action by establishing predetermined rules for PDCCH candidate allocation before actual transmission. The determination rule is pre-configured to check whether PDCCH candidates are linked and within the same slot/span, allowing the system to automatically make allocation decisions without real-time complex calculations, thus reducing operational complexity while ensuring appropriate allocation.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes a control section that determines whether two physical downlink control channel (PDCCH) candidates out of a plurality of PDCCH candidates can be allocated, and a receiving section that receives the two PDCCH candidates, when it is determined that the two PDCCH candidates can be allocated. The two PDCCH candidates are present within a same slot or a same span. The two PDCCH candidates are associated with two search space sets. The two PDCCH candidates are linked to each other. When it is determined that the two PDCCH candidates cannot be allocated, the control section determines whether one or more PDCCH candidates out of the plurality of PDCCH candidates can be allocated. According to an aspect of the present disclosure, PDCCH candidates can be appropriately determined.