Configurable Backplane Architecture for Multi-Standard Network Elements
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Solution Overview
Problem
The telecommunications industry faces challenges in constructing and operating networks due to varying global requirements, leading to higher costs from managing distinct product lines for different standards like SONET and SDH, and differing physical and cooling requirements across regions.
Innovation Solution
A network element with a modular, configurable backplane that supports multiple standards and services, allowing for flexible deployment by adjusting I/O connections and cooling systems, and accommodating different signal types and airflow directions, enabling a single global platform for various communications networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If distinct product lines are offered for different standards (SONET/SDH), then each product line can be optimized for its specific standard, but manufacturing and inventory costs increase
Solution Approach 1:
The backplane is designed with universal electrical connectors and trace configurations that can support multiple network standards (SONET and SDH) through the same physical infrastructure. The service interface cards and I/O modules can be configured to work with different standards without requiring different backplane hardware, enabling one product line to serve multiple markets.
Solution Approach 2:
The system allows dynamic configuration of the backplane to adapt to different standards. The electrical connectors and trace paths can be selectively activated or deactivated based on the required standard, allowing the same hardware platform to be flexibly reconfigured for SONET or SDH operations through software or hardware switching mechanisms.
2Ease of operation
If I/O connections terminate at the rear-side of the rack, then cable management is simplified for North American standards, but European standards requiring front-side connections cannot be supported
Solution Approach 1:
The backplane incorporates electrical connectors positioned to support both front-side and rear-side I/O connections. This universal connector placement allows the same network element to be configured for North American rear-connection standards or European front-connection standards, eliminating the need for region-specific hardware variants.
Solution Approach 2:
The backplane is designed with segmented electrical trace paths and connector configurations that can be selectively activated. The electrical connections are divided into separate trace groups that can be independently enabled or disabled, allowing the system to present either front-side or rear-side connectivity based on the required regional standard.
3Temperature
If cooling systems are configured for specific regional requirements, then cooling efficiency is optimized for that region, but the same network element cannot be deployed in regions with different cooling requirements
Solution Approach 1:
The cooling system is designed with dynamic configurability, allowing the airflow direction and cooling pathways to be adjusted based on the deployment region. The cooling fans and air channels can be reconfigured to provide front exhaust, rear exhaust, or side exhaust patterns, enabling the same network element to meet different regional cooling requirements while maintaining optimal thermal management.
4Adaptability or versatility
If separate staffing and accounting systems are maintained for multiple product lines, then each product line can be managed independently, but operational costs increase
Solution Approach 1:
The network element employs a universal control plane and management interface that can handle multiple network standards through the same operational framework. The service interface cards and system software are designed to recognize and manage both SONET and SDH configurations through unified command structures, allowing a single operational team to manage diverse network infrastructures without requiring separate specialized staff for each standard.
Data Source
AI summary
A multi-service network element is configurable for use in various types of communications networks. The network element has a service interface card, a service interface electrical connector for receiving the service interface card, an I/O electrical connector for receiving an I/O module, and a backplane. The backplane has a first side, an opposite side, a first means for electrically connecting the service interface electrical connector to the first side, and a second means for electrically connecting the I/O electrical connector to either side of the backplane. The backplane is partitioned into columns and rows of electrical connectors. Each column corresponds to a card slot for receiving a circuit pack and each row corresponds to a section of the backplane having traces for carrying a particular type of electrical signals between circuit packs.