Physical Channel Multi-Slot Scheduling With Flexible Time Resources
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Solution Overview
Problem
The multi-slot scheduling in 5G NR systems imposes strict requirements on time slot structures, leading to resource waste and inflexibility in data channel mapping due to the need for identical time-frequency resource usage across slots.
Innovation Solution
A flexible resource scheduling method that allows data channels to be transmitted across multiple time units without strict regulation of time domain positions, enabling more flexible resource allocation and mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-slot scheduling is used to improve transmission reliability and reduce signaling overhead, then transmission reliability is improved, but time slot structure flexibility deteriorates due to strict requirements on time domain symbol positions and quantities
Solution Approach 1:
The patent segments the time domain resources into multiple independent time units (slots), where each slot can have flexible configuration of time domain symbols. Instead of requiring identical PDSCH positions across all slots, the system allows independent configuration of time domain resources for each slot while maintaining the multi-slot transmission framework, thus resolving the conflict between reliability and flexibility
Solution Approach 2:
The patent introduces dynamic configuration of time domain symbol positions and quantities in each slot through indication information. The network device can dynamically adjust the time domain resource allocation for PDSCH in different slots based on actual channel conditions and traffic requirements, making the system adaptive rather than static, thereby improving flexibility while maintaining reliability
2Reliability
If identical time-frequency resources are used for PDSCH transmission in multiple time slots, then transmission reliability is improved, but resource utilization efficiency deteriorates due to resource waste when time slot structure requirements cannot be met
Solution Approach 1:
The patent applies local quality by allowing different time domain resource configurations in different slots rather than enforcing uniform resource allocation. Each slot can be optimized locally according to its specific conditions, with flexible adjustment of time domain symbol positions and quantities, thus improving overall resource utilization while maintaining transmission reliability through diversified resource usage
Solution Approach 2:
The patent changes the parameters of time domain resources (position and quantity of time domain symbols) in each slot through indication information. By dynamically adjusting these parameters, the system can adapt resource allocation to actual needs, avoiding resource waste while ensuring reliable transmission, thus resolving the contradiction between reliability and resource utilization efficiency
Data Source
AI summary
A method for physical channel transmission includes: a terminal device obtains first indication information, the first indication information being used to determine information of time domain resources corresponding to a first physical channel; the time domain resources of the first physical channel correspond to a first link direction; the time domain resources include time domain resources on N time units, N being an integer greater than 1; and the terminal device transmits the first physical channel by means of time domain resource on the N time units.