5G URLLC Service Coordination With Redundant Low-Latency Paths
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Solution Overview
Problem
Existing 5G mobile communication systems face challenges in providing ultra-reliable and low-latency communication (URLLC) services due to limitations in radio-wave path loss, transmission distances, and network architecture, which affect the reliability and latency of data transmission.
Innovation Solution
The method involves configuring redundant transmission paths and low-latency transport networks within the 5G system (5GS) to ensure ultra-reliable and low-latency communication by using network functions such as UDM/UDR, SMF, PCF, URLLCF/NEF, and TMF to manage subscription procedures, location verification, and downlink scheduling based on latency and packet error rate requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant transmission paths are configured to improve reliability, then packet error rate performance improves, but network complexity increases
Solution Approach 1:
The patent segments the transmission path into multiple independent redundant paths, allowing data to be transmitted through different routes simultaneously. This segmentation enables the system to achieve higher reliability by selecting successful transmissions while managing complexity through modular path configuration
Solution Approach 2:
The patent implements prior cushioning by pre-configuring multiple redundant transmission paths before transmission occurs. When transmission failures are detected, alternative paths are already prepared and can be activated immediately, cushioning against reliability failures without requiring complex real-time path generation
2Loss of time
If downlink scheduling is optimized to reduce latency, then communication speed improves, but scheduling complexity increases
Solution Approach 1:
The patent applies preliminary action by performing downlink scheduling decisions in advance based on predicted traffic patterns and QoS requirements. This allows the system to prepare transmission schedules before actual data arrival, reducing latency while managing complexity through predictive algorithms rather than real-time complex scheduling
Solution Approach 2:
The patent implements dynamic scheduling that adapts to changing network conditions and traffic priorities. The scheduling mechanism dynamically adjusts resource allocation based on real-time requirements, achieving low latency for urgent traffic while maintaining manageable complexity through adaptive rather than static scheduling rules
3Reliability
If network functions are integrated to improve service coordination, then service reliability improves, but system complexity increases
Solution Approach 1:
The patent merges multiple network functions (URLLC service management, transport network control, downlink scheduling) into an integrated control framework. This merging improves service coordination and reliability by ensuring consistent policy enforcement across different network layers, while managing complexity through unified control logic rather than distributed coordination overhead
Data Source
AI summary
Disclosed is a fifth generation (5G) or sixth generation (6G) communication system for supporting higher data transmission rate. A method for providing an ultra-reliable and low-latency communication (URLLC) service in an ultra-reliable and low-latency communication function (URLLCF) of a mobile communication system is provided. The method includes receiving an end-to-end latency request message from an application function (AF) device, the latency request message including a latency requirement and at least one of generic public subscription identifier (GPSI) information of a specific user equipment (UE), data network name (DNN), or single-network slice selection assistance (S-NSSAI), performing a subscription procedure of URLLC service condition with a unified data management (UDM)/user data repository (UDR) device, obtaining location information of the UE, identifying whether the location information conforms to a range required by the URLLC service, configuring a policy and association satisfying a latency for the URLLC service to the UE, and providing a URLLC service notification to the AF based on the configuration.