Network Gateway Aggregating Legacy Frame Relay Traffic
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Solution Overview
Problem
Legacy frame relay and HDLC traffic in CDMA2000 networks often leads to network congestion due to incompatible formats with newer EVDO networks, making it impractical to dynamically reassign traffic, resulting in unused bandwidth and high costs from maintaining separate infrastructure.
Innovation Solution
A network gateway modifies legacy frames by extracting and aggregating header and payload information, then encapsulating them using a novel format that expands frame size by no more than six percent, allowing efficient transmission over EVDO or IP-based networks as a single logical link, optimizing bandwidth use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If legacy frame relay and HDLC traffic is transmitted separately over dedicated infrastructure, then network compatibility and reliability are maintained, but network bandwidth utilization is inefficient and infrastructure costs increase
Solution Approach 1:
The patent combines legacy frame relay and HDLC traffic with EVDO IP-based traffic into a single aggregated network link. The gateway device multiplexes multiple protocol types over one shared physical infrastructure, allowing simultaneous transmission of incompatible traffic formats while improving bandwidth utilization and reducing the need for separate dedicated lines
Solution Approach 2:
The gateway device acts as an intermediary between legacy networks and EVDO IP-based networks. It performs protocol conversion, frame formatting, and traffic aggregation, enabling seamless interoperability between incompatible systems while maintaining the reliability of legacy applications and the efficiency of modern IP networks
2Productivity
If additional hi-speed lines are added to alleviate network congestion, then sufficient network bandwidth is available during peak traffic, but infrastructure costs increase
Solution Approach 1:
The patent creates a universal network infrastructure that can handle multiple traffic types (legacy frame relay, HDLC, and EVDO IP-based traffic) over a single aggregated link. This multi-functional approach eliminates the need for separate dedicated infrastructure for each traffic type, reducing the total quantity of infrastructure required while maintaining sufficient bandwidth for all applications
3Productivity
If dynamic redistribution of network flows is implemented, then bandwidth on signal lines is optimized during peak traffic, but processing complexity and latency increase
Solution Approach 1:
The gateway device performs preliminary frame formatting, encapsulation, and aggregation before traffic enters the network. By pre-processing legacy frames into standardized formats suitable for IP-based networks, the system optimizes bandwidth utilization without requiring complex real-time processing or dynamic redistribution decisions during traffic flow
Data Source
AI summary
A communications network gateway receives a stream of information formatted to be compatible with a first sub-network and it receives a stream of information formatted to be compatible with a second sub-network. The frames in the second stream are extracted and modified to be compatible with the transmission format of the first sub-network. The two streams of information are then aggregated for transmission over a logical network link in a manner that optimizes the bandwidth utilization of the overall communications network.