VLAN-Based Multiple PDN Routing Between Indoor and Outdoor Units
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Solution Overview
Problem
Existing Indoor Units (IDU) and Outdoor Units (ODU) connected via RJ45 interfaces face challenges in implementing multiple Packet Data Networks (PDNs) due to limitations in their current design and functionality.
Innovation Solution
The method involves allocating multiple VLAN interfaces to the physical network interfaces of both IDU and ODU, establishing PDN data channels in one-to-one correspondence with these VLAN interfaces, and allocating IP addresses to facilitate data interaction with a base station, thereby enabling multiple PDN connections between IDU and ODU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple PDN connections are implemented between IDU and ODU, then network flexibility and service capability are improved, but device complexity increases
Solution Approach 1:
The patent segments the single physical network interface into multiple virtual network interfaces using VLAN technology. Each VLAN interface is assigned to a separate PDN connection, allowing multiple PDNs to coexist on a single physical interface. This segmentation enables network flexibility without requiring multiple physical interfaces, thus avoiding proportional increase in device complexity.
Solution Approach 2:
The physical network interface is designed to perform multiple functions by supporting multiple VLAN interfaces simultaneously. Each VLAN interface can handle different PDN connections (e.g., internet access, VOIP, VoLTE), making the single physical interface universal for multiple network services. This multi-functionality achieves adaptability without proportionally increasing device complexity.
2Quantity of substance
If multiple VLAN interfaces are allocated to a single physical network interface, then the number of PDN connections is increased, but routing complexity increases
Solution Approach 1:
The routing function is segmented by creating separate routing tables or routing contexts for each VLAN interface. This allows the router to handle each PDN connection's routing independently without complex cross-VLAN routing logic. The segmentation of routing management reduces overall routing complexity while supporting multiple PDN connections.
Solution Approach 2:
The VLAN interface acts as an intermediary between the physical network interface and the PDN connections. Each VLAN interface provides a standardized interface for routing, simplifying the routing logic by abstracting the underlying physical interface details. This intermediary layer reduces routing complexity by providing a uniform interface for multiple PDNs.
3Adaptability or versatility
If IP addresses are allocated for each PDN data channel, then service capability is improved, but address management complexity increases
Solution Approach 1:
The address allocation mechanism is designed to handle multiple PDN connections universally through a standardized process. The system can allocate IP addresses from different address pools for different PDNs using the same allocation logic, making the address management system multi-functional. This universal approach enables diverse service capabilities without proportionally increasing address management complexity.
Data Source
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AI summary
A method for implementing multiple PDNs between an indoor unit and an outdoor unit, and a storage medium, the method comprising: the outdoor unit allocates at least two first VLAN network ports to a first physical network interface (S100); then, PDN data channels that are in one-to-one correspondence with the first VLAN network ports are established, wherein the PDN data channels are used for data interaction with a base station (S200); after that, the outdoor unit acquires an address allocation request corresponding to a PDN data channel from the indoor unit (S300); and allocates to the indoor unit a first IP address corresponding to said PDN data channel according to the address allocation request, so that a data message from the indoor unit is routed to the corresponding PDN data channel according to the first IP address (S400).