Session Layer Framing for Packet-Switched Interoperability
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Solution Overview
Problem
Existing communication systems between local, state, and federal agencies face interoperability challenges due to differences in radio types, modes, and frequencies, with client-server based solutions being costly and prone to single-point failures.
Innovation Solution
A peer-to-peer networking structure using Soft Switches with a Radio Soft Switch and Dispatcher Soft Switch, implementing the RPDFL protocol for direct communication between packet-switched apparatus without the need for a central server, enabling efficient and scalable interoperability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a client-server based solution is used to enable interoperability between packet-switched systems, then interoperability between disparate communication systems is achieved, but system reliability deteriorates due to single-point failure at the server site
Solution Approach 1:
The patent segments the centralized server architecture into distributed peer-to-peer connections. Each communication endpoint becomes an independent node capable of direct communication, eliminating the single point of failure at the server site while maintaining interoperability between disparate radio systems through standardized protocol translation at each endpoint.
Solution Approach 2:
The patent inverts the traditional client-server model by implementing a peer-to-peer architecture where endpoints communicate directly without requiring a central server. This inversion resolves the reliability issue by removing the single point of failure while preserving the ability to interoperate between different communication systems through protocol translation at each peer.
2Adaptability or versatility
If a client-server based solution is used to enable interoperability between packet-switched systems, then interoperability between disparate communication systems is achieved, but system cost increases due to server capacity limitations and expansion requirements
Solution Approach 1:
The patent implements self-service by enabling each communication endpoint to perform protocol translation and communication independently without relying on a central server. Each peer node autonomously handles interoperability functions, eliminating the need for expensive server capacity expansion and reducing overall system cost while maintaining interoperability capabilities.
3Reliability
If direct peer-to-peer communication is implemented between packet-switched apparatus, then system reliability and scalability are improved, but communication protocol compatibility between disparate systems deteriorates
Solution Approach 1:
The patent introduces a protocol translation mechanism that acts as an intermediary at each peer endpoint. This translation layer enables direct peer-to-peer communication while maintaining protocol compatibility between disparate radio systems by converting protocols locally at each endpoint, thus resolving the compatibility issue without requiring a central server.
Data Source
AI summary
A method and apparatus for session layer framing for interoperability between packet-switched systems is described. The method includes the steps of: generating (1210) a communication frame at the session layer including a plurality of fields; providing (1220) for a payload field in the plurality of fields for carrying a payload; and providing (1230) for a signal field in the plurality of fields for carrying a control signal.