Femtocell Access Point Rove-Out Detection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current wireless communication systems face challenges in seamlessly integrating licensed and unlicensed wireless systems, requiring dual-mode transceivers and resulting in high costs for users due to the need for upgrades, while also lacking efficient solutions for service theft prevention.

Innovation Solution

A communication system utilizing a Femtocell access point (FAP) and a network controller that enables seamless integration through a UTRAN Iu interface, with a generic access resource control protocol sub-layer for resource management, security control, and service theft prevention mechanisms, allowing for secure and efficient use of both licensed and unlicensed frequencies without the need for dual-mode transceivers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If dual-mode transceivers are used to integrate licensed and unlicensed wireless systems, then seamless integration and high-quality services are achieved, but user costs increase due to the need for upgrades

Engineering Contradiction:

Improveseamless integration of wireless systemsVSAvoiduser upgrade cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent introduces a network-side intermediary component (Femtocell Access Point with Generic Access Resource Control protocol sub-layer) that mediates between the mobile station and the core network. This intermediary enables the mobile station to access both licensed and unlicensed networks through a single interface, eliminating the need for dual-mode transceivers at the user equipment level while maintaining seamless integration capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the integration function by placing the dual-mode capability at the network side rather than the user side. The Femtocell Access Point handles the complexity of managing both licensed and unlicensed access modes, allowing mobile stations to use simpler single-mode transceivers while still benefiting from seamless network integration.

Inventive Principle:

Principle #1Segmentation

2Area of stationary object

If licensed wireless systems are used to provide mobile communications, then wide coverage is achieved, but service quality and data transfer speed are inferior to landline connections

Engineering Contradiction:

Improvecoverage areaVSAvoidservice quality

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The patent merges licensed and unlicensed wireless systems into a single integrated access platform. The Femtocell Access Point combines licensed wireless coverage with unlicensed high-speed wireless access, allowing users to enjoy both wide coverage and high service quality simultaneously without needing separate systems.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If unlicensed wireless systems are used to provide mobile access, then higher service quality and lower cost are achieved, but mobility range is limited to 100 meters or less

Engineering Contradiction:

Improveservice qualityVSAvoidmobility range

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The patent extends the mobility range by adding a new dimensional aspect - the ability to switch between different access modes (licensed and unlicensed) based on location and availability. Users can access unlicensed high-speed networks when available for local communication, and automatically fall back to licensed networks for broader coverage, effectively combining the advantages of both systems.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Reliability

If landline connections are used to provide high-quality voice and data services, then higher service quality is achieved, but user mobility is constrained

Engineering Contradiction:

Improveservice qualityVSAvoiduser mobility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical physical connection requirement of traditional landline services with a wireless communication system that provides equivalent or superior service quality. The integrated Femtocell system delivers high-quality voice and data services over wireless connections, eliminating the need for physical landline connections while maintaining high service reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8036664B2Method and apparatus for determining rove-out

Publication Date: 2011.10.11 RIBBON COMMUNICATIONS OPERATING CO INC

AI summary

Some embodiments are implemented in a communication system that includes a first wireless communication system that includes a Femtocell access point (FAP) and a network controller that can communicatively couple the FAP to a second wireless communication system. In some embodiments, the network controller can communicatively couple to the second wireless communication system through a UTRAN Iu interface. In some embodiments, the FAP can communicatively couple to a user equipment using a short-range licensed wireless frequency. Some embodiments provide method that determines whether a user equipment (UE) has roved-out of the first wireless communication system. The method receives a periodic message at the FAP from the UE. When the FAP fails to receive a pre-determined number of the periodic messages, the method sends a deregister message to the network controller over a unique connection dedicated to the UE and releases the dedicated connection.