PUSCH Opportunity Scheduling for Jittered Configured Grant Uplink
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in managing interference and overhead associated with multiple configured grant uplink transmissions, particularly in jittered periodic communications, which can lead to inefficient resource utilization and increased signaling overhead.
Innovation Solution
The solution involves determining a physical uplink shared channel (PUSCH) opportunity set with configurable PUSCH opportunities for transmitting in a configured grant resource, allowing for dithering and flexibility in transmission timing, reducing interference, and optimizing HARQ processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple configured grant uplink transmissions are used for high-reliability communication, then reliability is improved, but interference and signaling overhead increase
Solution Approach 1:
The patent applies dynamics by making the PUSCH transmission timing flexible rather than fixed. The UE determines PUSCH opportunities dynamically within a configured grant resource based on available downlink data, allowing transmission timing to adapt to actual traffic conditions. This dynamic approach reduces interference from rigid periodic transmissions while maintaining reliability through opportunistic retransmissions.
Solution Approach 2:
The patent changes the parameter of transmission timing from fixed periodic intervals to flexible opportunities within a configured grant resource. By allowing PUSCH transmissions to occur at variable times based on data availability and channel conditions, the system reduces interference while maintaining the reliability benefits of multiple transmission attempts.
2Reliability
If multiple configured grant uplink transmissions are used for high-reliability communication, then reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the configured grant resource into multiple PUSCH opportunities within a single grant configuration. Instead of requiring separate grant signaling for each transmission, the system divides one configured grant resource into multiple usable slots, reducing signaling overhead while enabling multiple transmission attempts for high reliability.
Solution Approach 2:
The patent makes a single configured grant resource serve multiple functions by allowing it to contain multiple PUSCH opportunities. This multi-functional approach enables the same grant configuration to support initial transmissions, retransmissions, and HARQ processes without requiring additional signaling, thereby reducing overhead while maintaining reliability.
3Productivity
If jittered periodic communications are used, then resource utilization improves, but interference management becomes more complex
Solution Approach 1:
The patent introduces the gNB as an intermediary that manages PUSCH opportunity determination for the UE. The gNB configures the granted grant resource and guides the UE on which PUSCH opportunities to use, simplifying interference management by centralizing control while allowing flexible resource utilization through jittered periodic communications.
Data Source
AI summary
Wireless communications systems and methods related to determining physical uplink shared channels (PUSCHs) for communicating in a configured grant resource are provided. A first communication device determines a PUSCH opportunity set including one or more PUSCH opportunities for communicating in a configured grant resource. The first wireless communication device communicates, with a second wireless communication device, a communication based on the determined PUSCH opportunity set.