Downlink Channel Reception Collision Handling
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Solution Overview
Problem
The increasing number of user equipment (UEs) and the growing volume of data and control information in wireless communication systems pose challenges for base stations (BSs) to efficiently manage limited radio resources, leading to delays and latency issues.
Innovation Solution
A method for efficiently receiving and transmitting downlink channels in wireless communication systems, involving a user equipment (UE) and a base station (BS), that optimizes resource allocation and reduces latency by employing advanced scheduling techniques and collision handling mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of user equipment (UEs) and data volume increase to meet growing communication demands, then communication capacity and data throughput are improved, but radio resource management complexity and latency increase
Solution Approach 1:
The patent segments the downlink channel reception process into multiple distinct phases: determining SPS PDSCH reception resources, determining dynamically scheduled PDSCH reception resources, detecting collisions between these resources, and applying specific handling rules for different collision scenarios. This segmentation allows the system to manage complex radio resources through structured, modular decision-making at each stage.
Solution Approach 2:
The patent applies preliminary action by pre-configuring semi-persistent scheduling (SPS) resources before dynamic scheduling occurs. The UE determines SPS PDSCH reception resources in advance, and collision handling rules are predetermined based on whether SPS or dynamic PDSCH resources collide. This preliminary structuring enables faster real-time resource management despite overall system complexity.
2Productivity
If advanced scheduling techniques and collision handling mechanisms are employed to optimize resource allocation, then resource utilization efficiency is improved, but processing complexity and implementation difficulty increase
Solution Approach 1:
The patent applies local quality by providing different collision handling rules for different local scenarios: when SPS PDSCH and dynamically scheduled PDSCH collide on the same PUCCH resource, the dynamic PDSCH takes precedence; when they collide on the same PUSCH resource, both are transmitted; when multiple SPS PDSCHs collide, specific SPS configurations are prioritized. These localized quality adjustments optimize resource utilization for each specific collision scenario without requiring complete reprocessing of all resources.
Solution Approach 2:
The patent introduces dynamics by allowing the UE to adaptively select collision handling strategies based on real-time conditions. The system dynamically determines whether SPS or dynamic PDSCH resources are colliding, and applies different handling rules accordingly. This dynamic adaptation enables efficient resource utilization while managing processing complexity through context-aware decision-making.
3Adaptability or versatility
If the density of nodes and user equipment increases to support more services, then network coverage and service capacity are improved, but interference management difficulty and communication delay increase
Solution Approach 1:
The patent reduces communication delay by performing preliminary determination of SPS PDSCH reception resources and collision scenarios before actual data transmission. The UE proactively identifies potential collisions between SPS and dynamic PDSCH resources and applies appropriate handling rules in advance, preventing delays that would occur from reactive resource management during high-density communication scenarios.
Data Source
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AI summary
A UE can receive a PDCCH for scheduling a first PDSCH on a serving cell. The UE can receive the first PDSCH from among a plurality of SPS PDSCHs and the first PDSCH on the basis of that i) the first PDSCH overlaps, with respect to time, with the plurality of SPS PDSCHs that are required to be received on the serving cell, and ii) a PDCCH ends at least 14 symbols before the start symbol of the earliest SPS PDSCH from among the plurality of SPS PDSCHs.