Secondary RAT Waiting Timer Reconfiguration for Idle State Information Acquisition
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Solution Overview
Problem
In fifth-generation mobile communication systems, secondary RAT systems face challenges in efficiently acquiring information from primary RAT systems, particularly when the general device is in an idle state, leading to increased overhead and signaling delays.
Innovation Solution
A method where a secondary RAT system uses a waiting timer with a default value to request information from a multi-RAT device, reconfiguring the timer if the request is rejected due to lack of processing time, allowing for extended time to receive the necessary information before retrying the request, thereby reducing overhead and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a secondary RAT system requests information from a multi-RAT device in idle state using a default waiting timer, then the information acquisition process is initiated, but the request is rejected due to insufficient processing time
Solution Approach 1:
The waiting timer is made dynamic by allowing reconfiguration based on device response. The system transitions from a static default timer value to an adaptive timer value that is adjusted according to the actual processing capabilities of the multi-RAT device, thereby resolving the contradiction between time efficiency and request success rate.
Solution Approach 2:
The system implements feedback mechanisms where the multi-RAT device provides rejection reasons and capability information to the secondary RAT system. This feedback enables the secondary RAT system to reconfigure the waiting timer appropriately, ensuring that subsequent requests are made with sufficient processing time while maintaining efficient information acquisition.
2Reliability
If the secondary RAT system extends the waiting timer to allow more processing time, then the request success rate improves, but the signaling overhead increases due to additional reconfiguration messages
Solution Approach 1:
The system performs preliminary actions by obtaining the multi-RAT device's capability information and processing time requirements before making information acquisition requests. This preliminary assessment allows the system to set an appropriate waiting timer value from the outset, avoiding the need for multiple reconfiguration exchanges and reducing signaling overhead while maintaining high request success rates.
3Device complexity
If the secondary RAT system uses a fixed default waiting timer value, then the system complexity is low, but the information acquisition efficiency decreases when device processing time requirements vary
Solution Approach 1:
The system changes the waiting timer parameter from a fixed default value to a dynamically adjusted value based on device-specific processing time requirements. This parameter adaptation allows the system to maintain low complexity by using a standardized mechanism while achieving high productivity by tailoring the timer value to match actual device capabilities and processing needs.
Data Source
AI summary
A method and apparatus of acquiring information on a primary radio access technology (RAT) system in a wireless communication system is provided. An entity of a secondary RAT system transmits a request for information on the primary RAT system to a multi-RAT device, and upon transmitting the request, starting a waiting timer which has a default value. If it is determined that the information on the primary RAT system cannot be acquired, by the multi-RAT device, until the waiting timer expires, the entity of the secondary RAT system reconfigures the waiting timer by a fixed value or a dynamic value.