RAN Access Node Service Level Traffic Differentiation via Flow ID
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Solution Overview
Problem
In the 5th generation wireless communication system, maintaining Quality of Service (QoS) for service data flows between user equipment and the radio access network is challenging due to the non-one-to-one correspondence between QoS flows and data radio bearers, requiring effective service level traffic differentiation to ensure proper scheduling and resource management.
Innovation Solution
The method involves the core network transmitting data flow information, including a flow ID and service type ID, to the RAN access node via a user plane packet, which sets up a data connection with the user equipment, enabling service level traffic differentiation by determining the corresponding bearer and maintaining a correspondence relationship between flow IDs and service type IDs to ensure QoS requirements are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the RAN access node uses multiple QoS flows mapped to a single data radio bearer, then resource utilization efficiency is improved, but service level traffic differentiation becomes more difficult
Solution Approach 1:
The patent applies preliminary action by pre-establishing a correspondence relationship between flow IDs and service type IDs in the RAN access node before actual traffic arrives. This allows the node to quickly differentiate service types without complex real-time analysis, resolving the contradiction by preparing differentiation capabilities in advance while maintaining efficient resource utilization.
Solution Approach 2:
The patent introduces an intermediary mechanism by using service type IDs as a mediator between multiple QoS flows and the single data radio bearer. The service type ID acts as a key that maps multiple flow IDs to appropriate service levels, enabling traffic differentiation without requiring complex direct mapping logic, thus maintaining both efficiency and manageability.
2Measurement precision
If the RAN access node establishes a new data radio bearer for each QoS flow, then service level traffic differentiation precision is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies universality by designing the data radio bearer to handle multiple QoS flows simultaneously through the service type ID mapping mechanism. A single bearer becomes multi-functional, serving different service types by identifying them via service type IDs, thus achieving both precise differentiation and efficient resource utilization.
Solution Approach 2:
The patent merges multiple QoS flows into a single data radio bearer by using service type IDs as grouping keys. Flows with the same service type ID are combined in the same bearer, maintaining differentiation precision through the ID mapping while improving resource efficiency by reducing the total number of bearers needed.
3Reliability
If the RAN access node implements detailed service level traffic differentiation, then QoS requirement satisfaction is improved, but processing complexity increases
Solution Approach 1:
The patent extracts the essential service type identification information from complex QoS flow parameters and represents it through simplified service type IDs. This extraction reduces processing complexity by working with compact identifiers rather than complex QoS parameter sets, while still maintaining the ability to satisfy QoS requirements through the maintained correspondence relationships.
Data Source
AI summary
A method of service level differentiation at a radio access network, a wireless network system and a radio access network (RAN) access node are provided. The method of service level traffic differentiation at the radio access network includes the following steps: A core network transmits a data flow information including a flow ID to a RAN access node via a user plane packet of an interface between the core network and the RAN access node. The RAN access node sets up a data connection with a user equipment according to the data flow information.