5G User Equipment Partial Repetitions Configured Grant Reliability
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Solution Overview
Problem
Current Configured Grant (CG) resources in 5G networks face challenges in ensuring K repetitions for Ultra-Reliable and Low-Latency Communications (URLLC) due to missed transmission opportunities, leading to potential reliability issues, with existing solutions like multiple CGs causing resource wastage and requiring complex signature management.
Innovation Solution
The method involves using shared resources to ensure K repetitions by transmitting data within remaining CG resources and potentially additional shared resources, with the option to adjust power and timing to achieve the required reliability, allowing for flexible alignment or offset of shared resource periods relative to CG periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple CG resources are allocated to ensure K repetitions, then transmission reliability is improved, but resource wastage increases
Solution Approach 1:
The patent applies universality by creating a shared resource pool that serves multiple UEs simultaneously. Instead of dedicating separate CG resources to each UE, the shared pool is universally accessible to multiple UEs who can autonomously access it when their CG transmissions are missed, thereby improving reliability while avoiding resource wastage through efficient multi-UE utilization
Solution Approach 2:
The patent implements self-service by enabling UEs to autonomously determine when to transmit in the shared resource pool based on their own missed CG transmission detection. Each UE independently monitors its own transmission status and self-manages retransmission without requiring complex network coordination, reducing overhead and improving resource efficiency
2Reliability
If multiple CG resources are allocated to ensure K repetitions, then transmission reliability is improved, but signature management complexity increases
Solution Approach 1:
The patent extracts the retransmission function from the dedicated CG resource framework and places it in a separate shared resource pool. This separation allows the original CG resources to maintain their simple signature management while the shared pool handles retransmissions, effectively removing the complexity burden from the primary transmission path
Solution Approach 2:
The shared resource pool acts as an intermediary between the CG resources and the retransmission requirement. It provides a neutral platform where UEs can perform retransmissions without directly modifying or complicating the original CG resource allocation and signature management structures
3Reliability
If data is transmitted in remaining CG resources with increased power, then transmission reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the transmission power adaptive rather than static. UEs dynamically adjust their transmit power in the shared resource pool based on their specific situation (number of missed transmissions, channel conditions, etc.), allowing reliable retransmission while minimizing unnecessary energy consumption compared to always transmitting at maximum power
Data Source
AI summary
Methods and systems for reliability enhancement for User Equipment (UE) with partial repetitions in Configured Grant (CG) are provided. According to one aspect, a method, performed by a UE in a Fifth Generation (5G) network, comprises: receiving data to be transmitted as uplink (UL) transmissions in CG resources K number of times within a CG period; determining that the number of Transmission Occasions (TOs) remaining within the CG resources and within the CG period for the UE is less than K; and either: transmitting the data within the remaining TOs within the CG resources and also within TOs within shared resources such that the transmission is performed at least K number of times; waiting until the beginning of the next CG period to transmit K number of times within the CG resources; or transmitting the data within the remaining TOs within the CG resources with an increased power.