Terminal Apparatus Multiple Scheduling Request Configuration Management
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Solution Overview
Problem
Current methods for scheduling request bits corresponding to multiple scheduling request configurations in LTE and NR systems have not been fully studied, leading to inefficiencies in uplink and downlink communication.
Innovation Solution
A terminal apparatus and base station apparatus are designed to efficiently manage multiple scheduling request configurations through advanced resource allocation and bit mapping techniques, allowing for simultaneous transmission of HARQ-ACK and scheduling request bits without overlap, enabling the base station to identify triggered scheduling requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple scheduling request configurations are deployed for different services, then service differentiation and communication reliability are improved, but resource collision and system complexity increase
Solution Approach 1:
The patent segments scheduling request resources into multiple configurations (first SR configuration and second SR configuration) with different periodicities. Each configuration is assigned to specific services (e.g., eMBB, URLLC), allowing the system to handle different service requirements independently while maintaining overall reliability. This segmentation resolves the contradiction by organizing complexity into manageable, service-specific segments.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by configuring multiple SR resources with different periodicities (e.g., 2ms, 4ms, 8ms) rather than using a single periodicity. This dimensional expansion allows the system to accommodate diverse service requirements without increasing linear complexity, as each service can be mapped to an appropriate periodicity dimension.
2Adaptability or versatility
If multiple SR resources with different periodicities are allocated in TDM manner, then service differentiation is improved, but resource collision with other UCI types increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple SR resources with different periodicities and pre-determining their mapping relationships with services. The base station预先 assigns specific SR resources to specific services (e.g., assigning first SR configuration to eMBB, second SR configuration to URLLC), preventing resource collisions before they occur. This preliminary arrangement resolves the contradiction by eliminating conflicts in advance.
Solution Approach 2:
The patent introduces service type as an intermediary that mediates between SR resource allocation and UCI transmission. By mapping services to specific SR configurations and periodicities, the service type acts as a mediator that prevents direct collision between SR resources and other UCI types, allowing coexistence of multiple services without resource conflicts.
3Speed
If SR resources are allocated with shorter periodicity, then uplink transmission responsiveness is improved, but resource occupancy and collision probability increase
Solution Approach 1:
The patent applies local quality by assigning different SR periodicities to different services based on their specific requirements. High-priority services like URLLC are assigned shorter periodicities (e.g., 2ms) for rapid responsiveness, while lower-priority services like eMBB are assigned longer periodicities (e.g., 8ms) to reduce resource occupancy. This localized optimization resolves the contradiction by tailoring periodicity to local service needs rather than applying a uniform approach.
Solution Approach 2:
The patent changes the periodicity parameter of SR resources dynamically based on service requirements. By configuring multiple SR resources with different periodicity values (2ms, 4ms, 8ms) and mapping them to different services, the system optimizes the balance between responsiveness and resource occupancy. This parameter variation resolves the contradiction by allowing each service to operate at its optimal periodicity.
Data Source
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AI summary
A terminal apparatus capable of efficiently performing the uplink and/or downlink communication is provided. The terminal apparatus receives higher layer signaling used for configuration of multiple scheduling request configurations, and transmits HARQ-ACK bits and scheduling request bits by using a HARQ-ACK PUCCH resource. Each of the multiple scheduling request configurations corresponds to one or more logical channels. Each of the multiple scheduling request configurations includes an SR PUCCH resource. The scheduling request bits are added to a sequence of the HARQ-ACK bits. In a case that the HARQ-ACK PUCCH resource and SR PUCCH resource overlap with each other in a time domain, a size of the scheduling request bits is given based on a number of scheduling request configurations with the overlapping SR PUCCH resource.