IP Inter-working Gateway for Heterogeneous Network Integration
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Solution Overview
Problem
Current solutions for inter-working between IP domains in Next Generation Networks (NGN) are incomplete, failing to address security issues, encoding/decoding, packet format conversion, and Quality of Service (QoS) effectively, leading to increased complexity and device investment.
Innovation Solution
An IP inter-working gateway that includes a transport layer module for determining service types and a service module for processing IP packets, performing signaling proxy, media conversion, and control protocol processing, while using ACL and firewall modules for filtering and QoS control, thereby establishing bearers and ensuring security across heterogeneous networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate devices are deployed to address different inter-working issues (security, encoding/decoding, packet format conversion, QoS), then each specific function can be implemented, but the networking complexity and device investment increase significantly
Solution Approach 1:
The patent merges multiple previously separate inter-working devices into a single integrated IP inter-working gateway that simultaneously performs security control, encoding/decoding, packet format conversion, and QoS management. This consolidation reduces networking complexity while maintaining comprehensive inter-working capabilities across different IP domains.
Solution Approach 2:
The IP inter-working gateway is designed as a universal device that handles multiple functions: it controls bearers, performs packet filtering, executes encoding/decoding operations, converts packet formats, manages QoS parameters, and provides security control. This multi-functional approach eliminates the need for multiple specialized devices.
2Reliability
If traditional separate device architecture is used for IP inter-working, then individual functions can be implemented, but security issues are not adequately addressed and the softswitch remains exposed to attacks
Solution Approach 1:
The patent integrates security control functions directly into the IP inter-working gateway, combining previously separate security devices with the gateway. This unified approach strengthens security by ensuring that all inter-working traffic passes through centralized security control, while reducing the number of separate devices needed.
3Adaptability or versatility
If heterogeneous encoding/decoding modes are used in different operating networks, then each network can optimize for its specific requirements, but inter-working between networks becomes impossible without conversion
Solution Approach 1:
The IP inter-working gateway acts as an intermediary device between heterogeneous networks with different encoding/decoding modes. It receives packets from one network, performs the necessary encoding/decoding conversion, and forwards them to the destination network, enabling inter-working while allowing each network to maintain its optimized encoding schemes.
4Adaptability or versatility
If comprehensive inter-working functionality is implemented across all IP domains, then complete inter-working capability is achieved, but the system complexity and implementation difficulty increase
Solution Approach 1:
The patent consolidates all inter-working functions (bearer control, security, encoding/decoding, packet format conversion, QoS) into a single integrated gateway device, reducing system complexity while achieving complete inter-working capability across mobile, fixed, and ISP networks.
Data Source
AI summary
An IP inter-working gateway in an NGN includes: a transport layer module which complies with the definition of a standard TCP/IP protocol stack, for determining a service type of an IP packet from a source IP domain, and transmitting the IP packet to a service module or to a destination IP domain; the service module, for performing processing of signalling proxy, RTCP and media conversion and/or processing of control protocol for the IP packet from the transport layer module, and transmitting the IP packet processed by the service module to the destination IP domain. The embodiments of the present invention provides a method for implementing inter-working between IP domains by the IP inter-working gateway, which implements the inter-working of IP packet between heterogeneous operating networks.