PUSCH Repetition Timing for Uplink Reliability and Resource Use
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Solution Overview
Problem
Efficient uplink (UL) transmissions to next generation Node-Bs (gNBs) are challenging due to limited UL resources in wireless communication systems.
Innovation Solution
A method and device for handling physical uplink shared channel (PUSCH) transmissions by transmitting an indicator for multiple PUSCH repetitions with defined nominal transmission durations, including events that disrupt power and phase continuity, allowing for optimized resource allocation and improved reception efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple PUSCH repetitions are transmitted to improve reliability, then transmission reliability is improved, but uplink resource consumption increases
Solution Approach 1:
The PUSCH transmission is segmented into multiple repetitions with different power consistency and phase continuity characteristics. Each repetition can be independently configured with specific transmission parameters, allowing the system to divide the overall transmission task into manageable segments that can be optimized individually for reliability while controlling resource usage.
Solution Approach 2:
The patent introduces dynamic configuration of PUSCH repetition parameters including power consistency indicators and phase continuity indicators. The network can dynamically adjust transmission power levels and phase relationships between repetitions based on channel conditions, enabling adaptive optimization of reliability versus resource consumption trade-offs in real-time.
2Measurement precision
If power consistency and phase continuity are maintained across PUSCH repetitions, then reception quality is improved, but device complexity increases
Solution Approach 1:
The UE is configured with indicators that enable it to self-determine whether to maintain power consistency and phase continuity across PUSCH repetitions. The device uses received indicators (power consistency indicator, phase continuity indicator) to autonomously configure its transmission parameters without requiring complex network-side control or coordination, reducing overall system complexity while maintaining reception quality.
Solution Approach 2:
The patent changes the transmission parameters (power level, phase continuity) based on received indicators from the network. By using standardized indicator fields in downlink control information, the system enables parameter adaptation without increasing device complexity, as the UE simply follows configuration instructions rather than performing complex autonomous decisions.
3Reliability
If nominal transmission duration is extended to accommodate multiple PUSCH repetitions, then transmission completeness is improved, but time efficiency deteriorates
Solution Approach 1:
The PUSCH transmissions are organized as periodic repetitions with configured intervals. The network can specify the number of repetitions and timing relationships, creating a structured periodic transmission pattern that ensures complete delivery of uplink data while optimizing the time occupation. This periodic structure allows efficient resource utilization compared to aperiodic or continuously extended transmissions.
Solution Approach 2:
The patent maintains continuous useful action by ensuring that PUSCH repetitions are transmitted back-to-back or with minimal gaps when power consistency and phase continuity are maintained. This continuity allows the UE to sustain transmission without interruption, improving time efficiency compared to restarting transmissions after interruptions, while still ensuring complete delivery through the repetition mechanism.
Data Source
AI summary
A method for a network to handle physical uplink (UL) shared channel (PUSCH) transmissions including: transmitting, to a communication device, an indicator indicating a plurality of PUSCH repetitions, wherein the indicator enables the communication device to determine at least one nominal transmission duration for the plurality of PUSCH repetitions; and receiving the plurality of PUSCH repetitions from the communication device in the at least one nominal transmission duration according to the indication; wherein one of the at least one nominal transmission duration comprises at least one of an actual transmission duration and an event; wherein the event causes at least one of power consistency and phase continuity not to be maintained across two PUSCH repetitions of the plurality of PUSCH repetitions before and after the event; wherein the event comprises that a length of a gap between the two PUSCH repetitions is greater than a threshold value.