Adaptive Metadata Scheduling for Mobile Broadcast Power Efficiency
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Solution Overview
Problem
Current mobile TV broadcast systems face inefficiencies in battery life and system flexibility due to frequent and unnecessary access to metadata updates, leading to increased power consumption and content delivery latency.
Innovation Solution
Incorporating a method where a mobile broadcast network server includes information about the next metadata update time in metadata messages, allowing mobile devices to de-energize their receivers until the update time, thereby reducing unnecessary power usage and synchronizing access to metadata, which improves battery life and system flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If mobile devices frequently access metadata updates in mobile broadcast transmissions, then content delivery latency is reduced, but battery power consumption increases
Solution Approach 1:
The server performs preliminary action by including next update time information in current metadata messages before the actual update occurs. This allows mobile devices to advance-know when to wake up and access metadata, enabling them to sleep longer and consume less battery power while still maintaining timely content delivery.
Solution Approach 2:
The system implements feedback by having the server broadcast next update time information to mobile devices through metadata messages. This feedback mechanism enables devices to synchronize their metadata access with actual update times, avoiding unnecessary wake-ups and reducing power consumption while maintaining low latency.
2Use of energy by moving object
If mobile devices access metadata updates at fixed intervals, then power consumption is reduced, but system flexibility and bandwidth efficiency deteriorate
Solution Approach 1:
The system transitions from static fixed-interval metadata access to dynamic adaptive access. The server dynamically determines next update times based on actual content changes, and mobile devices dynamically adjust their wake-up schedules accordingly. This dynamic approach maintains low power consumption while improving system flexibility and bandwidth efficiency.
Data Source
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AI summary
Information included within metadata broadcast within an overhead flow of a mobile broadcast network enables receiver devices to determine when metadata updates will occur. The mobile broadcast network can include within metadata messages information related to a time for the next metadata update. Using this information, receiver devices can determine when the next metadata update will occur and de- energize the receiver until that time. Enabling mobile devices to remain de-energized until the next metadata update improves their power efficiency. Synchronizing mobile devices to access the overhead flow for updated metadata reduces the content delivery latency that the system must accommodate, thereby improving system flexibility and bandwidth efficiency. Specify the time of a next metadata update enables the broadcast system to change the rate and timing at which metadata updates are performed.