Time-Sliced Packet Delivery for Mobile Power Management
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Solution Overview
Problem
Wireless IP networks, particularly mobile wireless IP networks, face stringent power requirements due to the energy demands of receivers for content transmission, especially in simplex broadcast environments like DVB-T and DVB-S, where existing content delivery mechanisms do not efficiently manage power consumption or error correction.
Innovation Solution
A packet data transmission method that divides content streams into sets of packets with a time offset field, enabling time-slicing delivery over IP networks, allowing for robust error correction and power management by suspending receiver operations during non-transmission periods, and utilizing copy bursts for error replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous reception of content streams is implemented, then content delivery reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic reception by dividing content streams into bursts separated by silent periods. The receiver operates periodically, receiving bursts at scheduled intervals rather than continuously, which reduces power consumption while maintaining reliable content delivery through the burst structure and timing information embedded in packets.
Solution Approach 2:
The patent uses preliminary timing information (time offset fields in packets) to schedule receiver operations in advance. The receiver is notified of upcoming burst times and can prepare to wake from low-power state at the optimal moment, ensuring reliable reception while minimizing power consumption during idle periods.
2Reliability
If receiver operates continuously to receive content, then content delivery is reliable, but terminal operation time is reduced
Solution Approach 1:
The receiver operates periodically based on burst scheduling information, remaining in low-power state during silent periods and activating only during expected burst transmission windows. This extends terminal operation time by reducing cumulative power consumption while maintaining delivery reliability through structured burst communication.
Solution Approach 2:
The patent incorporates feedback mechanisms where the receiver uses timing information from received packets to adjust its operation schedule. This feedback loop ensures the receiver wakes at the correct moments for bursts while optimizing power savings, thereby extending operational duration without compromising reliability.
3Use of energy by moving object
If time offset field is added to packets, then power management capability is improved, but packet structure complexity increases
Solution Approach 1:
The patent modifies existing packet parameters (such as adding time offset fields to standard IP or broadcast packets) rather than creating entirely new packet formats. This approach enables power management functionality while minimizing the increase in packet structure complexity by leveraging existing protocol frameworks and adding only necessary timing information.
Data Source
AI summary
A method and apparatus are disclosed whereby a time-slicing approach to the delivery of packet data is enabled. The approach is particularly suited to enabling power management by mobile terminals where receiver demands otherwise place strenuous requirements on an internal power source such as a battery.