5G Uplink Scheduling for eMBB and URLLC Priority Conflicts
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Solution Overview
Problem
Existing 5G communication systems face challenges in optimizing the transmission of data and control information for eMBB and URLLC services, particularly when conflicts arise, leading to performance loss in eMBB services due to prioritization of URLLC services.
Innovation Solution
A method and device for uplink transmission in wireless communication systems, where user equipment (UE) and base stations dynamically adjust the timing and priority of uplink data and control signaling based on downlink data and control signaling, allowing flexible scheduling of eMBB and URLLC services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If URLLC services are prioritized in uplink transmission, then reliability of URLLC is improved, but productivity of eMBB service transmission deteriorates
Solution Approach 1:
The patent implements dynamic scheduling that adjusts uplink transmission priorities based on real-time service requirements. The base station dynamically determines whether to prioritize eMBB or URLLC services by evaluating current channel conditions, buffer states, and service QoS requirements, allowing the system to adapt between different service modes rather than using fixed prioritization rules
Solution Approach 2:
The system changes transmission parameters such as time resource allocation, frequency resource allocation, and modulation and coding schemes based on the type of service being transmitted. For eMBB services, the system allocates more time and frequency resources with higher order modulation, while for URLLC services, it uses more robust coding and dedicated time slots, thereby optimizing performance for each service type
2Adaptability or versatility
If flexible scheduling is implemented for both eMBB and URLLC services, then adaptability of the system is improved, but device complexity increases
Solution Approach 1:
The patent segments the uplink transmission resources and control mechanisms into service-specific components. Separate scheduling entities, resource pools, and control channels are established for eMBB and URLLC services, allowing independent optimization and management of each service type while reducing cross-service interference and complexity
Solution Approach 2:
The base station acts as an intermediary that receives service requirements from multiple UEs, determines appropriate scheduling decisions, and allocates resources accordingly. This centralized mediation simplifies the complexity by consolidating the decision-making function at the base station rather than requiring complex distributed negotiations between UEs
Data Source
AI summary
A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method performed by a user equipment (UE) includes: receiving downlink data and/or downlink control signaling from a base station; determining uplink data and/or uplink control signaling, an uplink time unit and/or an uplink physical channel for transmitting the uplink data and/or the uplink control signaling based on the downlink data and/or the downlink control signaling; and transmitting the uplink data and/or uplink control signaling to the base station on the determined uplink time unit and/or uplink physical channel.