PLP Cell Allocation for Bandwidth Control in ATSC 3.0
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Solution Overview
Problem
There is no established method for bandwidth control over Physical Layer Pipes (PLPs) when multiple PLPs are included in one frequency band, which is a challenge in next-generation terrestrial broadcasting standards like ATSC 3.0 that employ IP/UDP packets for data transmission.
Innovation Solution
A transmission device and receiving device are designed to determine the number of cells for each PLP such that the total number of cells in a physical layer frame matches the sum of cells across multiple PLPs, enabling bandwidth control by dynamically allocating cells and adjusting modulation parameters to ensure efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple PLPs are included in one frequency band, then data transmission capacity is improved, but bandwidth control becomes difficult
Solution Approach 1:
The frequency band is segmented into multiple PLPs (Physical Layer Pipes), each with independently controllable cell allocation. The processing unit divides the total bandwidth into discrete cell units that can be dynamically assigned to different PLPs, enabling fine-grained bandwidth control while maintaining high transmission capacity
Solution Approach 2:
The system implements dynamic bandwidth control by allowing the number of cells allocated to each PLP to vary based on transmission requirements. The processing unit can adjust cell allocation in real-time, making the bandwidth distribution flexible and adaptive rather than fixed, thus resolving the control complexity issue
2Productivity
If the number of cells is allocated to match the sum of PLPs, then bandwidth utilization is improved, but cell allocation complexity increases
Solution Approach 1:
The system employs feedback mechanisms where the processing unit monitors the actual cell allocation across PLPs and adjusts allocations to ensure the total matches the available bandwidth. This feedback loop maintains optimal bandwidth utilization while automating the complex allocation process, reducing manual intervention requirements
Solution Approach 2:
The processing unit changes the parameter of cell count allocation dynamically, adjusting the number of cells assigned to each PLP based on traffic demands and service requirements. By treating cell allocation as a variable parameter rather than a fixed value, the system achieves high bandwidth utilization while managing complexity through programmable control
Data Source
AI summary
The present technology relates to a transmission device, a receiving device, and a data processing method that enable bandwidth control over PLPs when one frequency band includes the plurality of PLPs. The transmission device determines the number of cells of a component to be transmitted by each of PLPs such that the number of cells in an entire physical layer frame including the plurality of PLPs matches a sum of the number of cells of the plurality of PLPs, and transmits a broadcast stream including the physical layer frame. The present technology can be applied to, for example, a system for transmitting a broadcast stream including a physical layer frame including a plurality of PLPs.