DVB-H Event Data Superslice Power Reduction
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Solution Overview
Problem
Current DVB-H broadcasting technologies consume excessive power when receiving event data, especially when devices are in standby mode, as they need to frequently wake up to check for new events, leading to rapid battery drain.
Innovation Solution
Implementing a 'superslice' method where event data is broadcast in redundant time slices, allowing a mobile device to receive only one slice every n slices, significantly reducing the frequency of device activation and thus power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If event data is broadcast in every time slice using normal DVB-H mechanisms, then the device receives up-to-date event data, but the device must wake up frequently causing high power consumption
Solution Approach 1:
The patent implements periodic action by broadcasting event data in redundant time slices with a period of n slices, where only one slice contains actual event data and the remaining n-1 slices are redundant. The receiver wakes up periodically every n slices to receive event data, significantly reducing wake-up frequency and power consumption while ensuring complete event data reception.
Solution Approach 2:
The patent applies preliminary action by pre-broadcasting redundant event data in advance across multiple time slices before the receiver needs to access it. The transmitter sends event data in one slice and repeats it in n-1 subsequent redundant slices, so when the receiver wakes up after n slices, the data is already available and complete.
2Reliability
If the device wakes up every time-slicing cycle to check for events, then the device receives all event data, but battery drains quickly
Solution Approach 1:
The patent reduces battery consumption by implementing periodic wake-up every n time slices instead of every slice. The event data is broadcast with redundancy across n slices, so the receiver can sleep for n-1 slices and wake up only once every n slices to receive complete event data, extending battery life while maintaining reliability.
Solution Approach 2:
The transmitter performs preliminary action by pre-sending redundant event data in n-1 slices before the receiver wakes up. This ensures that when the receiver wakes up after n slices, all event data is already received complete, maintaining reliability without requiring frequent wake-ups.
3Use of energy by moving object
If event data is broadcast in redundant time slices, then power consumption is reduced, but the transmission bandwidth is increased
Solution Approach 1:
The patent achieves efficient bandwidth utilization by broadcasting event data periodically with redundancy: one slice contains actual event data while n-1 slices are marked as redundant. This approach reduces power consumption by factor of n while the bandwidth increase is minimal since only one slice per n slices contains actual data content.
Data Source
AI summary
Broadcast data is transmitted in first time slices. Event data is transmitted in second time slices, wherein a predetermined number n-1 of consecutive second time slices is redundant. Therefore a receiver receiving such a broadcast need only receive one of n slices of event data. Therefore when the receiver is in standby mode, it need only be activated to receive 1 in n of second time slices to receive event data. Therefore the receiver is deactivated for a longer period, thus saving power consumption.