AT Command Extensions for Cellular to WLAN Offload
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Solution Overview
Problem
Existing wireless communication systems lack efficient mechanisms for managing communication signals between user equipment (UE) components, particularly in scenarios involving multiple networks and protocols.
Innovation Solution
The proposed solution involves modifying existing AT commands to enable better management of packet domain events and WLAN offloading characteristics, allowing user equipment to efficiently switch between cellular and non-cellular networks based on signal strength and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing AT commands are used without modification, then the system maintains simplicity and compatibility with current standards, but the system lacks efficient mechanisms for managing communication signals between UE components in multi-network scenarios
Solution Approach 1:
The patent embeds new functionality within existing AT command structures by nesting additional parameters and event types inside current command frameworks. This allows the system to gain enhanced network management capabilities while maintaining the outer shell of existing command structures, thus improving adaptability without proportionally increasing complexity.
Solution Approach 2:
The modified AT commands are designed to serve multiple functions: they can handle traditional packet domain events while also managing WLAN offloading characteristics and inter-network signal management. This multi-functionality allows a single command structure to address diverse network management needs, improving versatility without requiring entirely separate command sets for each function.
2Productivity
If the system manually manages network connections without automated mechanisms, then the system maintains simplicity in control logic, but the system lacks dynamic adjustment capability based on real-time signal conditions
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors signal strength and quality metrics from both cellular and WLAN networks. This feedback is fed back into the network management logic, enabling dynamic, real-time adjustments of connection states. The feedback loop automatically triggers network switching decisions based on predefined thresholds, improving productivity without requiring complex manual intervention.
Solution Approach 2:
The system employs self-service mechanisms where the UE automatically monitors its own signal conditions and autonomously makes network switching decisions without external control. The modified AT commands enable the system to self-manage connection states based on real-time measurements, improving network switching efficiency while keeping control logic relatively simple through rule-based automated decision-making.
3Loss of information
If the system uses basic event reporting commands, then the system maintains simplicity in command implementation, but the system lacks comprehensive reporting capability for packet domain events and WLAN offloading characteristics
Solution Approach 1:
The patent segments the event reporting functionality into distinct, manageable components: packet domain events, WLAN offloading events, and inter-network signal events. Each event type is assigned specific parameters and reporting mechanisms within the modified AT command structure. This segmentation allows comprehensive event coverage while keeping individual command parameters organized and manageable, reducing the perceived complexity through structured organization.
Solution Approach 2:
The patent adds a new dimension to event reporting by incorporating WLAN-specific parameters and event types alongside traditional packet domain events. This multi-dimensional approach allows the system to report on both cellular and WLAN network states simultaneously, providing comprehensive information without requiring separate reporting systems. The extended parameter space enables richer event description while maintaining a unified command interface.
Data Source
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AI summary
Described herein are systems, apparatuses, and processes for obtaining data for a specific PDN connection of a cellular network. A UE executes one or more applications utilizing one or more PDN connections of a cellular network. A TE generates an AT command for an MT, the AT command comprising a request for data for a specific PDN connection that can be offloaded from the cellular network to a non-cellular network, assistance data for determining offloading of traffic, and cellular signal measurements. The TE receives an AT command response, corresponding to the AT command, comprising data of whether the specific PDN connection can be offloaded, offload assistance data, and/or cellular network measurement data. The TE may receive unsolicited result codes when offloadablity of a PDN connection changes, offload assistance data changes, or when cellular signal measurements meet offload assistance criteria.