Cellular Preference Signaling for Wi-Fi Offload Control
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Solution Overview
Problem
There is no standard mechanism to communicate to end devices that cellular service is preferred over other wireless technologies like Wi-Fi, leading to network congestion and inefficient resource management in wireless networks.
Innovation Solution
Implementing a cellular preference service that configures end devices to select cellular access over non-cellular access based on tracking area codes, dummy PLMN identifiers, or system information blocks, and manages network resources through access barring and RRC messaging to avoid congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If end devices use non-cellular access (Wi-Fi) over cellular access, then network congestion is reduced, but there is no standard mechanism to communicate cellular preference leading to inefficient resource management
Solution Approach 1:
The patent introduces a standardized intermediary mechanism (system information blocks and access barring configurations) that mediates between the network's cellular preference requirements and the end device's access decisions. This intermediary enables efficient communication of cellular preference without requiring direct complex negotiations between devices and network, resolving the contradiction by providing a simple standardized interface that achieves both congestion reduction and efficient resource management.
Solution Approach 2:
The patent makes the system information blocks and access barring mechanisms universal by designing them to serve multiple functions: they simultaneously convey cellular preference information, provide access control directives, and enable standardized communication across different network configurations. This multi-functionality allows a single standardized mechanism to address both the need for congestion reduction and the need for efficient resource management communication.
2Productivity
If end devices are configured to select cellular access over non-cellular access, then resource utilization is optimized, but network congestion may increase
Solution Approach 1:
The patent implements dynamic access barring configurations that can be adjusted in real-time based on network conditions. The system information blocks contain configurable parameters that allow the network to dynamically control the threshold for barring non-cellular access, enabling the system to adapt to changing congestion levels while maintaining optimized resource utilization. This dynamic adjustment resolves the contradiction by allowing resource optimization without fixed congestion risks.
Solution Approach 2:
The patent changes key parameters of the access control mechanism by introducing configurable barring factors, time durations, and threshold values in the system information blocks. These parameter changes enable the network to fine-tune the balance between promoting cellular access (for resource utilization) and preventing excessive congestion. By adjusting these parameters, the system achieves both optimized resource usage and controlled congestion levels.
3Ease of operation
If standardized communication mechanism for cellular preference is implemented, then resource management efficiency is improved, but device complexity increases
Solution Approach 1:
The patent enables end devices to automatically receive and process cellular preference information through standardized system information blocks without requiring manual configuration or complex user intervention. The devices self-configure based on the standardized messages from the network, which resolves the contradiction by providing efficient resource management through automation rather than through complex device configurations. The simplicity of the standardized interface masks the underlying complexity management.
Data Source
AI summary
A method, a network device, and a non-transitory computer-readable storage medium are described in relation to an cellular preference service. The cellular preference service may include a network-side service that manages cellular access preference relative to non-cellular access offload for end devices. The cellular preference service may transmit information to the end devices that may be used to override or direct use of cellular access when non-cellular access is available. The cellular preference service may include an end device side service that manages cellular access preference relative to non-cellular access offload based on the information received from the network.