Selective Vo4G Service Blocking via Location Detection
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Solution Overview
Problem
The availability of 4G voice services is not ubiquitous, and existing technologies lack the ability to selectively block Voice over 4G (Vo4G) services based on location or device identity, leading to suboptimal customer experiences and challenges in testing Vo4G services in areas where they have not been launched.
Innovation Solution
A method and system that determine the location of a device requesting Vo4G services using information from SIP headers and mapping tables to selectively enable Vo4G or circuit-switched services, allowing service providers to block Vo4G services from certain locations and test them in new markets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Voice over 4G services are made universally available, then service coverage is improved, but service quality deteriorates in areas where Vo4G is not yet optimized or supported
Solution Approach 1:
The patent implements location-based service differentiation by determining the device's geographic location and selectively enabling or disabling Vo4G services based on pre-configured location criteria. This allows the system to provide high-quality Vo4G service in optimized areas while automatically falling back to circuit-switched services in areas where Vo4G is not yet optimized, thus maintaining local service quality while achieving universal coverage.
2Reliability
If Voice over 4G services are blocked from certain locations, then service quality is improved for those locations, but device complexity increases due to location determination and service selection logic
Solution Approach 1:
The patent introduces an intermediary mechanism where the wireless network infrastructure (base station, core network) performs the complex location determination and service selection logic. The device simply requests service and receives appropriate routing instructions, thereby maintaining high service quality through centralized control while minimizing the complexity burden on individual devices.
Solution Approach 2:
The system implements self-service by automatically determining device location, comparing it against configured criteria, and selecting the appropriate service mode (Vo4G or circuit-switched) without requiring user intervention. This automation maintains service quality while reducing the perceived complexity for end users.
3Ease of operation
If Voice over 4G services are enabled without location-based control, then ease of operation is improved, but ability to test services in controlled markets deteriorates
Solution Approach 1:
The patent enables differentiated service delivery by location, allowing universal ease of operation in areas where Vo4G is fully launched while providing controlled access in test markets. The system can configure specific geographic areas as test zones where only certain devices or users can access Vo4G services, thereby maintaining operational simplicity for the general population while enabling controlled testing capabilities in specific locations.
Data Source
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AI summary
A method for selectively blocking Voiceover4G services within a wireless communications network is provided. A request for access to Voiceover4G services is received from a device connected to a wireless communications network. A location of the device is determined from information contained within the request. A determination is made of whether Voiceover4G services are provided at the location by the wireless communications network at the location of the device indicated within the request. The device is configured to communicate over the wireless network using Voiceover4G services responsive to a determination that the Voiceover4G services are provided at the location of the device or is configured to communicate over the wireless network using circuit switched services responsive to a determination that the Voiceover4G services are not provided at the location of the device.