eMBMS Streaming Loss Control in Radio Sharing Mobile Devices
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Solution Overview
Problem
Conventional multi-standby communication devices face challenges with data loss and corruption during tune-away events, where the active RAT is interrupted to allow an idle RAT to perform operations, leading to disrupted reception, especially for time-sensitive data like streaming multimedia.
Innovation Solution
A mobile communication device determines data loss ratios and sets thresholds to decide whether to permit or block tune-away events, using data loss ratio thresholds and error thresholds to manage RF resource access, ensuring data integrity during tune-away operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the active RAT is interrupted to allow the idle RAT to perform operations (tune-away event), then the idle RAT can perform necessary network operations, but data loss and corruption occur in the active RAT
Solution Approach 1:
The system performs preliminary actions by determining a data loss ratio before the tune-away event occurs and comparing it against a threshold. If the data loss ratio is below the threshold, the tune-away is permitted; otherwise, it is blocked. This preliminary assessment prevents data loss by making the decision before the actual tune-away happens.
Solution Approach 2:
The system implements feedback by continuously monitoring the data loss ratio resulting from tune-away events and using this information to dynamically adjust the threshold for future decisions. The threshold determination is based on observed data loss patterns, creating a closed-loop control system that optimizes the balance between allowing tune-aways and preventing data loss.
2Duration of action of stationary object
If tune-away events are frequently permitted, then the idle RAT can maintain network connectivity, but data reception quality deteriorates
Solution Approach 1:
The system changes the parameter of the threshold value dynamically based on observed data loss ratios. The threshold is not fixed but adapts to the actual performance conditions, allowing the system to optimize the frequency of tune-away events based on real-time feedback from the network environment.
3Reliability
If tune-away events are blocked to prevent data loss, then data integrity is maintained, but the idle RAT cannot perform necessary network operations
Solution Approach 1:
The system performs preliminary assessment of the data loss ratio before blocking or permitting tune-away events. This allows the system to make informed decisions that balance data integrity with the need for network operations, rather than using a fixed blocking policy.
Data Source
AI summary
Embodiments include methods implemented by a processor of a mobile communication device for managing tune-aways by a radio frequency resource supporting a first subscription to support a second subscription. The processor may determine a data loss ratio of the data of a media file that is lost in transmission to the mobile communication device. The processor may compare the data loss ratio of the data to a first data loss ratio threshold and a second data loss ratio threshold, and the processor may block a tune-away event of the radio frequency resource from the first subscription to the second subscription in response to determining that the data loss ratio of the data is greater than the first data loss ratio threshold and less than the second data loss ratio threshold.