F1 Interface TNL Association Management in 5G Virtualized NodeBs
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Solution Overview
Problem
The separation of virtualized NodeBs into Distributed Units (DUs) and Centralized Units (CUs) in 5G wireless communications requires efficient management of communication protocols to facilitate the arrangement of Transport Network Layer (TNL) associations, particularly for supporting multiple Stream Control Transmission Protocol (SCTP) associations on the F1 interface, which is crucial for reliable signaling and load balancing in virtualized environments.
Innovation Solution
The implementation of mechanisms to support multiple SCTP associations on the F1 interface, including the generation of CU configuration update messages by the Centralized Unit (CU) to indicate TNL addresses for addition or removal, and the establishment of these associations between the CU and DU, following principles similar to the NG-C/N2 interface, enabling robust signaling and load balancing across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple SCTP associations are implemented on the F1 interface, then reliability and load balancing are improved, but device complexity increases
Solution Approach 1:
The patent segments the F1 interface communication into multiple independent SCTP associations, each handling specific signaling streams. This segmentation allows parallel communication paths between CU and DU, improving reliability through redundancy while managing complexity by organizing associations into distinct functional groups.
Solution Approach 2:
The patent implements dynamic association management where SCTP associations can be established, modified, or released based on operational needs. The CU can dynamically add or remove associations through configuration updates, allowing the system to adapt reliability and resource allocation in real-time without fixed static configurations.
2Adaptability or versatility
If dynamic management of TNL addresses is implemented, then adaptability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements self-service mechanisms where the CU autonomously manages TNL address allocations and association configurations. The system automatically handles address assignment, association establishment, and resource allocation without requiring manual intervention, thereby improving adaptability while maintaining operational simplicity through automation.
Solution Approach 2:
The patent incorporates feedback mechanisms where the CU monitors the state of SCTP associations and TNL addresses, automatically adjusting configurations based on operational conditions. This feedback-driven approach enables dynamic resource allocation while simplifying operation through automated decision-making based on real-time system state information.
Data Source
AI summary
Apparatuses, systems, methods, and computer-readable media associated with F1 interface arrangement configuration within a network that implements virtualized NodeBs are disclosed herein. In embodiments, one or more non-transitory computer-readable media having instructions stored thereon, wherein the instructions, in response to execution by one or more processors, cause a centralized unit (CU) of an access node to generate a CU configuration update message, the CU configuration update message to include an indication of a transport network layer (TNL) address of the CU for which a TNL association between the CU and a distributed unit (DU) of the access node is to be added or removed, and cause the CU configuration update message to be transmitted to the DU. Other embodiments may be described and/or claimed.