RAN Response Message for TSC Configuration Parameters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G wireless networks lack a mechanism for the radio access network (RAN) to respond to time-sensitive communication assistance information (TSCAI), indicating whether it can satisfy the requested TSC configuration parameters, which is crucial for efficient resource allocation and quality of service (QoS) maintenance in time-sensitive networking (TSN) scenarios.
Innovation Solution
A method and network node that transmit a response message to the session management function (SMF) and application function (AF) indicating whether the RAN can satisfy the TSC configuration parameters, including adjustments to TSC flow parameters such as burst arrival time, priority, and delay interval, allowing for resource availability assessment and efficient traffic scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the RAN accepts all TSC flows without response mechanism, then resource utilization may be improved, but QoS requirements cannot be guaranteed and resource exhaustion occurs
Solution Approach 1:
The patent implements a feedback mechanism where the RAN sends response messages to the SMF indicating whether it can satisfy TSC configuration parameters. This allows the system to dynamically adjust resource allocation based on actual RAN capacity, preventing resource exhaustion while ensuring QoS requirements are met for accepted flows.
Solution Approach 2:
The system dynamically adjusts TSC flow parameters such as burst arrival time, periodicity, and delay interval based on RAN resource availability. The RAN can modify these parameters in response messages to indicate adjusted scheduling requirements that match current resource conditions, enabling adaptive resource utilization.
2Reliability
If the RAN implements response mechanism for TSCAI, then QoS control is improved, but system complexity increases
Solution Approach 1:
The response message mechanism is designed to work within existing 5G core network protocols and interfaces. The same message structures and transmission paths used for other control signaling are leveraged, allowing the QoS control function to be added without requiring entirely new system components or protocols.
Solution Approach 2:
The system controls complexity by managing a limited set of TSC configuration parameters (burst arrival time, periodicity, delay interval, priority) rather than allowing unlimited parameter variations. This focused parameter management enables effective QoS control while keeping the complexity of the response mechanism manageable.
3Productivity
If the RAN rejects TSC flows to conserve resources, then resource efficiency is improved, but information loss occurs about potential service capability
Solution Approach 1:
Instead of uniformly rejecting or accepting all TSC flows, the system applies local quality control by evaluating each flow's specific parameters (burst arrival time, periodicity, delay interval) against current RAN resource conditions. This allows selective acceptance of flows that can be served while rejecting others, providing nuanced information about service capability for different traffic patterns.
Solution Approach 2:
The RAN performs preliminary assessment of TSC configuration parameters before committing resources. By evaluating whether the parameters can be satisfied in advance and providing detailed response information, the system avoids later resource conflicts and provides comprehensive service capability information to the core network for future scheduling decisions.
Data Source
AI summary
Embodiments of the present disclosure provide a method, a network node, and a computer program product for transmission of a response message, in a wireless communication system (100). The method is performed by a network nod (50) of an access network (102) in the wireless communication system (100). The method comprises receiving (302) time-sensitive communication assistance information, TSCAI, including TSC configuration parameters from a session management function, SMF. Further, the method comprises transmitting (304) a response message intended for one or more of: at least one network function associated with a core network, CN (104), and an application function, AF, said response message indicating whether or not the network node satisfies the TSC configuration parameters in the TSCAI. Corresponding network node, and computer program products are also disclosed.