Dynamic Addressing for Subscriber Stations with IP Convergence
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Solution Overview
Problem
Conventional broadband systems face challenges in identifying network nodes behind wireless access nodes with an IP convergence sub-layer, particularly in providing Quality of Service (QoS) and policy-based access, as existing standards lack mechanisms for managing communications with multiple user nodes.
Innovation Solution
A method and system that provide a dynamic address to user nodes connected to a subscriber station with an IP convergence sub-layer, using a subscriber identifier and client identifier to associate the address with a service flow, enabling unique identification and differentiated QoS for each user node, and facilitating interoperability between broadband wireless access networks and service networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an IP convergence sub-layer is implemented in wireless access nodes, then native IP operation and seamless integration with packet-switched networks is achieved, but the ability to uniquely identify and manage individual user nodes behind the access node is lost
Solution Approach 1:
The patent introduces a service flow identifier as an intermediary element that bridges the IP convergence sub-layer and the underlying transport mechanism. This identifier acts as a mediator that carries user node identification information through the IP-based network without requiring changes to the IP protocol itself, thus preserving node identification capability while maintaining native IP operation.
Solution Approach 2:
The patent adds a new dimension of identification by introducing service flow identifiers that operate at a different layer than traditional IP addressing. This dimensional addition allows simultaneous native IP operation and user node identification by using orthogonal identification mechanisms - IP addresses for network routing and service flow identifiers for user node identification.
2Quantity of substance
If conventional broadband systems use cable-based infrastructure, then network coverage and connectivity are provided, but the cost of building and extending the network infrastructure increases significantly
Solution Approach 1:
The patent replaces the mechanical cable-based infrastructure with a wireless communication system. By substituting physical cable laying with wireless signal transmission, the system achieves network coverage without the high costs associated with installing and extending physical cable infrastructure, while maintaining connectivity capabilities.
3Ease of manufacture
If wireless broadband networks eliminate physical cable dependencies, then network deployment flexibility and reduced infrastructure cost are achieved, but mechanisms for providing Quality of Service and policy-based access to individual users are lacking
Solution Approach 1:
The patent implements dynamic service flow identifier allocation that adapts to changing network conditions and user requirements. The system dynamically assigns, modifies, and releases service flow identifiers based on real-time QoS requirements, user policies, and network state, enabling flexible QoS provision in wireless networks without compromising deployment simplicity.
Data Source
AI summary
A system and method for providing service in a network having a wireless component is disclosed. The system and method comprise receiving a request for a dynamic address from a user node connected to a subscriber station having a convergence sub-layer, providing the dynamic address to the user node, associating the dynamic address with a service flow associated with the subscriber station, and sending data addressed to the dynamic address through the service flow. The dynamic address is based on a subscriber identifier associated with the subscriber station and a client identifier associated with the user node.