NR Slot Offset Scheduling for Valid ACK/NACK and PUSCH Timing
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Solution Overview
Problem
In new radio (NR) communication, extended PDSCH decoding time or PUSCH preparation time can lead to invalid ACK/NACK feedback or PUSCH transmission due to unchanged slot offsets, causing inefficiencies in data transmission.
Innovation Solution
Determine a first slot offset for PUCCH feedback and a second slot offset for PUSCH transmission based on specific control information, including pre-stored slot offsets and table-based offsets, to align processing times with data transmission occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDSCH decoding time is extended, then decoding reliability is improved, but feedback timing becomes invalid causing transmission inefficiency
Solution Approach 1:
The patent introduces dynamic adjustment of feedback timing based on PDSCH decoding time requirements. The network device determines the timing of PUCCH based on actual decoding needs rather than fixed protocol timing, allowing the system to adapt timing dynamically to ensure both reliable decoding and valid feedback transmission.
2Reliability
If PUSCH preparation time is extended, then preparation reliability is improved, but transmission timing becomes invalid causing data transmission failure
Solution Approach 1:
The patent enables dynamic determination of PUSCH transmission timing based on actual preparation time requirements. The network device adjusts the timing of PUSCH transmission according to the UE's preparation capabilities and needs, ensuring that data transmission occurs only after successful preparation while maintaining efficient resource utilization.
3Device complexity
If fixed slot offset is used, then protocol simplicity is maintained, but processing time alignment fails causing invalid transmissions
Solution Approach 1:
The patent changes the parameter of slot offset from a fixed protocol-defined value to a dynamically determined value based on actual processing time requirements. The network device calculates and indicates appropriate slot offsets that align with UE processing capabilities, ensuring valid transmissions while maintaining protocol simplicity through existing signaling mechanisms.
Data Source
AI summary
The present application provides a data transmission method, a communication device, and a storage medium. The method includes: determining, according control information, a first slot offset and a second slot offset; sending, according to the first slot offset, feedback information, and performing, according to the second slot offset, a data transmission. The solution of the present application can be used to solve the problem of insufficient time for ACK/NACK and/or physical uplink service transmission caused by relaxed processing of physical downlink shared channel and/or physical uplink shared channel.