Time-Slicing Parameter Signalling for DVB-T Receiver Buffer Management
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Solution Overview
Problem
Mobile DVB receivers face challenges with power consumption due to the need for large buffers in time-slicing schemes, which can lead to inefficiencies when decoding bursts of data, especially if the buffer is too small or if data needs to be decoded before consumption.
Innovation Solution
A method of signalling in communications networks that provides a set of time-slicing parameters, including minimum time between bursts, desired output rate, and maximum average transfer rate, is used to configure receivers and manage data bursts effectively, allowing for efficient buffering and decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If time slicing is used to reduce power consumption, then power usage is reduced, but the receiver requires a sufficiently large buffer
Solution Approach 1:
The patent applies preliminary action by providing time-slicing parameters in advance through service information signalling. The receiver obtains parameters such as minimum time between bursts, desired output rate, and maximum average transfer rate before receiving data bursts, allowing it to pre-configure its buffer and receiver operations. This eliminates the need for large buffers while maintaining power-saving benefits, as the receiver can precisely manage its buffer based on predetermined parameters.
2Productivity
If the buffer is too small, then the receiver may begin receiving a burst before the previous burst has been consumed, but if the buffer is large, then power consumption increases
Solution Approach 1:
The patent applies dynamics by enabling the receiver to dynamically adjust its buffer management based on the received time-slicing parameters. The receiver configures its buffer size and receiver operation timing according to the minimum time between bursts, desired output rate, and maximum average transfer rate parameters. This dynamic configuration allows the buffer to be optimally sized for each service, preventing overflow while minimizing power consumption by keeping the receiver active only when necessary.
3Manufacturing precision
If data needs to be decoded before consumption, then data processing accuracy is improved, but the time lag increases
Solution Approach 1:
The patent applies preliminary action by providing decoding-related parameters in advance through the service information signalling. The maximum average transfer rate parameter allows the receiver to pre-configure its decoding operations to match the incoming data rate, ensuring that decoding can keep pace with data arrival without excessive buffering or time lags. This enables accurate decoding while minimizing delays.
Data Source
AI summary
A terrestrial digital video broadcasting (DVB-T) network is used to transmit IP datagrams to receiving devices using multiprotocol encapsulation (MPE). MPE datagram sections and, if forward error correction (FEC) is used, MPE-FEC datagram sections are transmitted in time-sliced bursts. Time slicing parameters specifying a minimum time between bursts and bit rate output of a receiving device time slicing buffer can be used to help improve power saving and improve quality of service.