PUSCH Repetition Transmission with Nominal Duration Segmentation
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Solution Overview
Problem
Efficient uplink (UL) transmissions to the gNB are challenging due to limited UL resources in existing LTE and LTE-A systems, particularly in next-generation radio access networks (NG-RAN).
Innovation Solution
A communication device is equipped with a process that determines multiple nominal transmission durations for Physical Uplink Shared Channel (PUSCH) repetitions, allowing for improved UL transmission efficiency by optimizing time durations and reducing the need for DMRSs through power and phase continuity management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple PUSCH repetitions are transmitted to ensure reliable UL transmission, then reception reliability is improved, but transmission time and resource consumption increase
Solution Approach 1:
The patent segments the transmission process by introducing multiple nominal transmission durations (NTD1, NTD2, etc.) that divide the PUSCH repetitions into distinct time segments. Each segment has specific DMRS configuration rules, allowing the system to manage repetition transmissions in manageable time blocks rather than as a single continuous transmission, thereby improving reliability while controlling time consumption.
Solution Approach 2:
The patent applies dynamic transmission strategies by allowing different DMRS configuration rules for different nominal transmission durations. The system dynamically adjusts transmission parameters based on the specific NTD being used, enabling flexible optimization of reliability versus time trade-offs during the transmission process.
2Reliability
If DMRS is transmitted in every PUSCH repetition to ensure correct reception, then reception reliability is improved, but UL resources are consumed excessively
Solution Approach 1:
The patent applies local quality by differentiating DMRS transmission requirements based on the specific nominal transmission duration. Different NTDs have different DMRS configuration rules, allowing the system to transmit DMRS only where necessary (e.g., at the beginning of certain NTDs or under specific conditions) rather than uniformly in all repetitions, thereby reducing UL resource consumption while maintaining reception reliability.
Solution Approach 2:
The patent changes the transmission parameters by introducing multiple nominal transmission durations with different DMRS configuration rules. This parameter change allows the system to optimize the balance between reliability and resource consumption by selecting appropriate NTDs and their associated DMRS rules based on transmission conditions.
3Productivity
If multiple nominal transmission durations are introduced to optimize UL transmission efficiency, then transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies universality by creating a framework where multiple nominal transmission durations can be used to handle different transmission scenarios. The system can select appropriate NTDs based on the specific requirements of each transmission, allowing a single multi-functional framework to address various efficiency optimization needs without requiring entirely separate mechanisms for each scenario.
Data Source
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AI summary
A communication device for handling physical uplink (UL) shared channel (PUSCH) transmissions, comprises at least one storage device; and at least one processing circuit, coupled to the at least one storage device, wherein the at least one storage device stores instructions, and the at least one processing circuit is configured to execute the instructions of receiving an indicator indicating a plurality of physical uplink (UL) shared channel (PUSCH) repetitions from a network; determining at least one nominal transmission duration for the plurality of PUSCH repetitions; and transmitting the plurality of PUSCH repetitions to the network in the at least one nominal transmission duration according to the indication.