Dynamic Time Domain Resource Allocation in PDCCH Scheduling
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Solution Overview
Problem
The dynamic change in the time domain position of the Physical Downlink Control Channel (PDCCH) affects the time domain resource allocation for data scheduling, leading to potential conflicts and inefficiencies in communication systems.
Innovation Solution
A communication method and apparatus that dynamically determine a second time domain resource for data scheduling based on the time domain position of the PDCCH and the initially assigned first time domain resource, ensuring flexible resource allocation even when the PDCCH position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the time domain position of PDCCH dynamically changes to improve scheduling flexibility, then adaptability is improved, but resource allocation reliability deteriorates due to potential conflicts with data resources
Solution Approach 1:
The patent introduces a time domain offset parameter as an intermediary between the PDCCH position and data resource allocation. This offset acts as a buffer that prevents direct conflict between dynamically positioned PDCCH and data resources, allowing the system to maintain both flexibility in PDCCH positioning and reliability in resource allocation by ensuring sufficient time separation through the offset mechanism
2Manufacturing precision
If the first time domain resource is strictly allocated based on initial PDCCH position to ensure resource allocation precision, then manufacturing precision is improved, but adaptability deteriorates when PDCCH position changes
Solution Approach 1:
The patent implements dynamic resource allocation by making the data resource position dependent on the actual PDCCH position rather than a fixed initial position. The time domain offset is applied relative to the dynamically determined PDCCH position, allowing the system to maintain precise resource allocation while adapting to PDCCH position changes. This dynamic approach ensures that resource precision is preserved in each scheduling instance while accommodating flexibility in PDCCH positioning
Data Source
AI summary
This application relates to the field of communication technologies, and provides a communication method and apparatus. The method includes: A terminal device receives first downlink control information DCI from a network device through a first physical downlink control channel PDCCH. The first DCI includes a first time domain resource assignment TDRA indicator field, and the first TDRA indicator field is used to indicate a first time domain resource. The terminal device receives or sends data on a second time domain resource after determining the second time domain resource based on a time domain position of the first PDCCH and the first time domain resource. The first time domain resource is different from the second time domain resource. The method is applied to a time domain resource assignment process of the data scheduling.