NGN Access Resource Reservation for Subscriber-Level QoS

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Solution Overview

Problem

Current resource reservation mechanisms in next generation networks (NGN) lack efficient support for subscriber-level quality of service (QoS) management in access configuration mode, particularly in integrating resource requests with network operation policy rules and available transport resources, which affects service quality and network manageability.

Innovation Solution

A method where a network access additional function entity (NAAF) initiates resources requests based on subscriber service level agreements, interacting with a resources mediation policy decision function entity (PDF) to check policy compliance and resource availability, and a border gateway function (BGF) performs admission control and forwarding operations to ensure QoS, allowing for subscriber-level QoS classification and dynamic resource management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If resource requests are initiated by service control equipment or CPE based on session information, then session-specific QoS can be guaranteed, but subscriber-level QoS management without session association cannot be implemented

Engineering Contradiction:

Improvesession-specific QoS guaranteeVSAvoidsubscriber-level QoS management capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent segments resource reservation into two independent modes: session-specific resource requests (AF-initiated) and subscriber-level resource requests (NAAF-initiated). This segmentation allows each mode to operate independently according to its specific requirements, resolving the contradiction between session-specific QoS guarantee and subscriber-level QoS management capability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces NAAF (Network Access Attachment Function) as an intermediary entity that specifically handles subscriber-level resource requests. This intermediary separates subscriber-level management from session-specific management, enabling both functions to coexist without interference while maintaining their respective QoS guarantees

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If resource requests are processed without integrating network operation policy rules, then processing speed is improved, but QoS management compliance and network manageability deteriorate

Engineering Contradiction:

Improveresource request processing speedVSAvoidQoS management compliance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements preliminary action by pre-configuring operation policy rules in the PDF (Policy Decision Function) and pre-establishing subscriber service level agreements in the NAAF. When resource requests are processed, these pre-configured policies are automatically applied, ensuring QoS compliance without slowing down the processing speed

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where the PDF evaluates resource requests against pre-configured operation policy rules and provides admission control decisions. The system continuously monitors resource usage and QoS compliance, providing feedback to adjust resource allocation dynamically while maintaining processing efficiency

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If dynamic resource modification and activation/deactivation is implemented, then network adaptability and QoS flexibility are improved, but system complexity increases

Engineering Contradiction:

ImproveQoS flexibilityVSAvoidresource management system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamics by enabling real-time modification of resource reservations and dynamic activation/deactivation of QoS parameters. The system can adjust bandwidth, priority, and other QoS parameters dynamically based on network conditions and subscriber requirements, achieving high flexibility through structured dynamic control mechanisms

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent reduces complexity by pre-configuring operation policy rules, QoS parameters, and subscriber service level agreements before runtime. These pre-configured elements serve as templates that are automatically applied during resource requests, eliminating the need for complex real-time decision-making while maintaining flexibility

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS7693054B2Method for implementing resources reservation in access configuration mode in next generation network

Publication Date: 2010.04.06 HUAWEI TECH CO LTD

AI summary

A method for implementing resources reservation in an access configuration mode in an NGN, including: when a subscriber accesses a network, an NAAF sending a resources request message to a resources mediation PDF; after receiving the resources request message, the resources mediation PDF making an admission decision according to network operator policy rules and availability of resources, send an admission installation command to a BGF, setting and keeping the corresponding admission decision parameters information in the BGF. Thus, the BGF performs packet forwarding operations as classifying, marking, shaping, and discarding on the user traffic entering the network according to the admission decision information so as to ensure the QoS class required by the user. Therefore, an applicable solution for implementing resources reservation in the access configuration mode in the NGN is provided.