Feedback Transmission Configuration for Mixed Services
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Solution Overview
Problem
Communication networks face challenges in delivering differentiated feedback transmissions for services with varying quality of service (QoS) requirements, such as delay and reliability, due to the use of unsuitable PUCCH formats for HARQ acknowledgments, which can violate latency requirements for delay-sensitive services.
Innovation Solution
A method and apparatus for a terminal device to obtain configuration information from a network node, determining the correspondence between resource configurations and service types, allowing for differentiated feedback transmissions based on identified service types, using metrics like PDSCH duration, DCI parameters, and resource indicators to select appropriate PUCCH or PUSCH formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a long PUCCH/PUSCH format with long transmission duration is used for HARQ A/N transmission, then feedback transmission reliability is improved, but latency requirement for delay-sensitive services is violated
Solution Approach 1:
The patent implements dynamic selection of PUCCH/PUSCH formats based on service type identification. The terminal device determines whether to use long or short transmission duration formats by identifying the service type (delay-sensitive vs. delay-tolerant) of the corresponding data transmission, allowing the system to adaptively adjust feedback transmission parameters to meet different QoS requirements
Solution Approach 2:
The patent changes the transmission duration parameter of PUCCH/PUSCH formats based on service requirements. For delay-sensitive services, short transmission duration formats are selected to meet latency requirements, while for delay-tolerant services, long transmission duration formats are used to improve reliability through extended transmission time
2Adaptability or versatility
If service differentiation is implemented using different numerologies or transmission durations, then QoS requirements for different services are met, but device complexity increases
Solution Approach 1:
The patent establishes predetermined correspondences between service types and PUCCH/PUSCH format configurations before actual feedback transmission occurs. The terminal device pre-configures multiple PUCCH/PUSCH formats with different parameters and establishes mapping relationships with service types, so that during operation it only needs to identify the service type and select the corresponding pre-configured format, avoiding complex real-time calculations
Solution Approach 2:
The patent segments the feedback transmission mechanism into distinct service-type-specific paths. By dividing services into delay-sensitive and delay-tolerant categories with dedicated PUCCH/PUSCH format configurations for each, the system avoids the complexity of managing a single unified mechanism that must handle all service types, making the overall system more manageable despite supporting multiple services
Data Source
AI summary
A method for communications comprising obtaining configuration information from a network node. The configuration information is related to resource configurations of feedback transmissions with respect to data transmissions from the network node to the terminal device for different types of services. The method further comprises determining a correspondence between the resource configurations and the different types of services based at least in part on the configuration information.