UE ACK Resource Selection for Periodic 5G Downlink Scheduling
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Solution Overview
Problem
Existing communication systems, particularly in 5G NR, face inefficiencies in resource usage, especially in scenarios with periodic traffic, due to varying requirements for different use cases such as eMBB, URLLC, and mMTC, which affect latency and reliability.
Innovation Solution
A user equipment (UE) is equipped with a transceiver that receives resource configurations and indicators to determine resources for acknowledgement reports, optimizing the transmission of these reports based on received downlink resources, thereby enhancing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed periodic downlink resources are allocated for each use case, then resource allocation is simplified and reliable, but resource usage efficiency deteriorates due to varying traffic requirements
Solution Approach 1:
The patent implements dynamic resource allocation where the network can indicate whether to use a first resource (specific to the use case) or a second resource (shared resource) for uplink transmissions. This dynamic switching mechanism allows the system to adapt between dedicated and shared resource allocation based on actual traffic conditions, resolving the contradiction between reliable fixed allocation and efficient flexible usage
Solution Approach 2:
The patent introduces a shared uplink resource (second resource) that can serve multiple use cases (eMBB, URLLC, mMTC) simultaneously. This universal resource pool allows different traffic types to share common resources when appropriate, improving overall system efficiency while maintaining the option for dedicated resources when needed for reliability
2Reliability
If dedicated uplink resources are assigned for each downlink resource, then transmission reliability is improved, but resource flexibility deteriorates
Solution Approach 1:
The patent implements dynamic resource selection where the UE can be instructed via network indication to switch between using a dedicated first resource or a shared second resource for uplink transmissions. This dynamic adaptability allows the system to maintain high reliability through dedicated resources when needed while gaining flexibility through shared resources during other periods
Solution Approach 2:
The patent introduces a network indication mechanism that acts as an intermediary between dedicated and shared resource allocation. This mediator allows the system to smoothly transition between resource allocation modes based on traffic requirements, maintaining both reliability and flexibility without direct conflict
3Reliability
If separate resources are allocated for different traffic types, then service quality is guaranteed, but system complexity increases
Solution Approach 1:
The patent merges dedicated and shared resource allocation into a unified framework. By allowing UEs to switch between first resources (dedicated) and second resources (shared) based on network indication, the system guarantees service quality for different traffic types while reducing the complexity of managing entirely separate resource pools through a single flexible mechanism
Data Source
AI summary
Some exemplary embodiments relate to a user equipment (UE), a scheduling device and respective methods. For example, the UE comprises a transceiver which, in operation, receives a resource configuration indicating periodic downlink resources, wherein each downlink resource is associated with a respective first resource of a physical uplink control channel (PUCCH) for transmission of an acknowledgement report, receives a resource indicator for determining a second resource for transmission of the acknowledgement report, and receives data via one of the downlink resources. The UE, for example, further comprises circuitry which, in operation, determines the second resource, using the resource indicator, and determines, from among the first resource associated with the one of the downlink resources and the second resource, the resource to be used for transmission of the acknowledgment report, wherein the transceiver, in operation, transmits the acknowledgement report via the resource determined by the circuitry.