5G Ethernet VLAN Bridging With Dynamic Trunk and Access Port Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 5G systems face limitations in dynamic VLAN configuration, particularly with static VLAN assignments and inefficient use of network resources due to flooding inactive VLANs, and lack of criteria for classifying and managing VLAN tags, leading to resource waste and inflexible network management.
Innovation Solution
Implementing a 5G System (5GS) with dynamic and semi-dynamic VLAN configuration methods, utilizing a node to receive and store VLAN configuration information, and employing a User Plane Function (UPF) to configure Ethernet bridging operations based on VLAN configuration information, including predefined VIDs or lists of VIDs, and utilizing Multiple VLAN Registration Protocol (MVRP) for trunk ports to dynamically learn associated VLANs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static VLAN assignments are used, then network security and management control are improved, but network flexibility and adaptability deteriorate
Solution Approach 1:
The patent implements dynamic VLAN configuration where VLAN assignments are no longer static but can change based on device identity, location, and network conditions. The system allows VLAN memberships to be dynamically assigned and reassigned, transforming the rigid static VLAN model into a flexible dynamic model that maintains security while adapting to changing network requirements.
Solution Approach 2:
The patent changes the parameters of VLAN configuration from fixed static values to dynamic variables. By introducing parameters such as device MAC addresses, user identities, and location information as basis for VLAN assignment, the system enables flexible reconfiguration without compromising the structured management approach of static VLANs.
2Adaptability or versatility
If dynamic VLAN configuration is implemented, then network flexibility and adaptability are improved, but system complexity increases
Solution Approach 1:
The patent introduces intermediary components such as VLAN assignment servers and protocol handlers that mediate between the complex dynamic configuration requirements and the actual network devices. These intermediaries manage the complexity of dynamic VLAN assignments by providing standardized interfaces and automated decision-making logic, reducing the burden on individual network devices.
Solution Approach 2:
The patent implements self-service mechanisms where network devices can automatically obtain VLAN configuration information through protocols like MVRP and 802.1X authentication. Devices autonomously query VLAN membership information and configure themselves without manual intervention, reducing the operational complexity despite the enhanced dynamic capabilities.
3Reliability
If flooding is used for MAC learning across all VLAN tags, then complete network coverage is ensured, but network resource efficiency deteriorates
Solution Approach 1:
The patent applies local quality by enabling MAC learning and flooding operations only for specific relevant VLANs rather than universally across all VLANs. The system determines which VLANs are actually active or relevant to a particular device and limits flooding operations to those specific VLANs, reducing unnecessary network traffic while ensuring complete coverage of relevant network segments.
Solution Approach 2:
The patent uses partial action by performing MAC learning and flooding only for a subset of VLANs that are actually needed, rather than excessive action that would flood all possible VLANs. This selective approach ensures adequate network coverage for active VLANs while avoiding the resource waste of flooding inactive or irrelevant VLANs.
4Device complexity
If a maximum limit of 16 VLAN tags is imposed, then system simplicity is maintained, but adaptability to large-scale networks deteriorates
Solution Approach 1:
The patent transitions from a one-dimensional limitation of 16 VLAN tags to a multi-dimensional VLAN identification approach. By introducing additional dimensions such as VLAN stacks, nested VLANs, or hierarchical VLAN structures, the system can support a much larger number of VLANs while maintaining manageable complexity through structured organization and automated management protocols.
Data Source
AI summary
Methods and apparatuses for a 5G System (5GS) (20) support dynamic and semi-dynamic VLAN configuration for Ethernet bridging services provided by the 5GS. The 5GS (20) includes a node that is configured to receive and store VLAN configuration information for a CE (12). Particularly, the VLAN configuration information, which comprises a single predefined VLAN ID (VID) or a list of non-predefined VIDs or a single non-predefined VID, may be stored advantageously within 5G Virtual Network (VN) Group Data and indicates whether the UE (12) acts as an Ethernet trunk port or access port. With respect to the 5GS (20) establishing or modifying an Ethernet PDU session for the UE (12), a UPF (22) of the 5GS (20) configures Ethernet bridging operations for the UE as an access port or a trunk port, in dependence on the VLAN configuration information.