Uplink Channel Coverage in 5G mmWave via Multi-Slot PUSCH
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in extending cell coverage in ultra-high frequency (mmWave) bands, particularly in improving the uplink channel's coverage and efficiency.
Innovation Solution
A method and apparatus for transmitting a physical uplink shared channel (PUSCH) in multiple slots, where a single redundancy version is applied across multiple slots, allowing for improved channel coding and increased coverage by determining multiple slots for PUSCH transmission and applying a low code rate transport block size, thereby enhancing the uplink channel's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single redundancy version is applied across multiple slots for PUSCH transmission, then channel coding gain and coverage are improved, but transmission flexibility and adaptability to varying channel conditions are reduced
Solution Approach 1:
The patent segments the uplink transmission into multiple slots, each slot being a separate transmission opportunity. By dividing the overall transmission task across multiple time slots with a single redundancy version, the system achieves both extended coverage through repeated transmissions and maintains一定的 flexibility through slot-level segmentation
Solution Approach 2:
The patent implements periodic retransmission of the same redundancy version across multiple slots. This periodic action ensures that the transmitted signal is repeatedly sent at regular intervals, improving the probability of successful reception in challenging mmWave channel conditions while maintaining a structured and manageable transmission pattern
2Reliability
If multiple slots are used for PUSCH transmission with a single redundancy version, then channel coding gain is achieved, but transmission time and latency increase
Solution Approach 1:
The patent ensures continuous transmission across multiple slots without interruption, maintaining the useful action of data transmission throughout the multi-slot period. This continuity maximizes the channel coding gain by ensuring that all allocated resources are actively used for transmitting redundant versions of the same data, thereby improving reliability without unnecessary delays
Solution Approach 2:
The patent performs preliminary determination of the single redundancy version to be used across all slots before transmission begins. This preliminary action simplifies the transmission process by pre-establishing the coding parameters, reducing processing delays during actual transmission and enabling faster initiation of the multi-slot transmission sequence
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a terminal in a wireless communication system comprises determining multiple slots for a PUSCH transmission; identifying a redundancy version for the PUSCH transmission; and transmitting a transport block (TB) across the multiple slots determined for the PUSCH transmission, wherein a single value of the redundancy version is applied on the TB across the multiple slots.