Multicast Measurement Trigger for RRC Inactive State Transition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in maintaining optimal reception quality for multicast sessions in RRC_IDLE/INACTIVE states, leading to suboptimal performance.
Innovation Solution
A wireless device receives a multicast session while in an inactive state and initiates a connection resume procedure based on measurement results to transition to a connected state when certain conditions are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a wireless device remains in RRC_IDLE/INACTIVE state to save resources, then energy consumption is reduced, but reception quality of multicast sessions deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the wireless device monitors reception quality metrics (such as block error rate, signal strength, or packet loss) of the multicast session while in RRC_IDLE/INACTIVE state. When the reception quality falls below a predetermined threshold, the device automatically triggers a connection resume procedure to transition to RRC_CONNECTED state, ensuring reliable reception while minimizing unnecessary state transitions.
Solution Approach 2:
The patent changes the operational parameter of the wireless device by transitioning between RRC_IDLE/INACTIVE and RRC_CONNECTED states based on reception quality conditions. This dynamic parameter change allows the device to adapt its state according to actual reception conditions, balancing energy savings with reception reliability requirements.
2Reliability
If a wireless device transitions to RRC_CONNECTED state to improve reception quality, then reception quality improves, but device complexity and state management overhead increase
Solution Approach 1:
The patent enables the wireless device to autonomously monitor its own reception quality and make decisions about state transitions without requiring continuous network intervention. The device self-evaluates reception conditions against predetermined thresholds and independently triggers connection resume procedures when necessary, simplifying the overall system architecture by distributing intelligence to the device level.
Solution Approach 2:
The patent prepares the device with predetermined threshold values for reception quality metrics before the actual multicast session begins. These pre-configured thresholds enable the device to quickly assess whether a state transition is needed without performing complex real-time calculations, thereby reducing processing complexity during critical decision moments.
3Measurement precision
If the device continuously monitors reception quality to make informed state transition decisions, then state transition accuracy improves, but processing time and energy consumption increase
Solution Approach 1:
The patent applies partial monitoring by focusing measurement resources on key reception quality parameters (such as block error rate, signal strength, or packet loss) rather than continuously analyzing all possible signal characteristics. This selective monitoring approach provides sufficient accuracy for state transition decisions while significantly reducing processing overhead and energy consumption compared to comprehensive continuous analysis.
Data Source
AI summary
A method and apparatus for state transition based on multicast measurement is provided. A wireless receives a multicast session from a network while in an inactive state, and initiates a connection resume procedure for transitioning from the inactive state to a connected state based on a result of a measurement related to the multicast session satisfying a certain condition.