Broadcast Network Controller Distributing IP Streams Across Multiple PLPs
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Solution Overview
Problem
Conventional broadcast transmission systems cannot efficiently add new services when the residual bandwidth of existing physical layer pipes (PLPs) is insufficient, as they lack a method to distribute IP streams across multiple PLPs within a single broadcast network frequency band.
Innovation Solution
A broadcast transmission system that includes a broadcast source, scheduler, transmitter, network switch, and controller, which packetizes services, determines optimal PLP distribution across multiple frequency bands based on bandwidth information, and adjusts IP stream addressing to enable transmission of added services using multiple PLPs when a single PLP is insufficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single PLP is used for transmission, then the system structure is simple, but the adaptability to accommodate new services with varying bandwidth requirements is insufficient
Solution Approach 1:
The patent segments the broadcast network frequency band into multiple PLPs (Physical Layer Pipes), each with different bandwidth capacities. This allows the system to divide and allocate bandwidth resources flexibly across multiple transmission channels, enabling new services to be accommodated by distributing their data streams across appropriate PLPs based on available residual bandwidth.
Solution Approach 2:
The patent introduces a new dimension of service allocation by enabling IP streams to be distributed across multiple PLPs simultaneously. Instead of being confined to a single transmission pipe, data can flow through multiple parallel PLPs, effectively adding a dimensional aspect to bandwidth utilization that enhances service adaptability without fundamentally restructuring the entire system.
2Productivity
If residual bandwidth of existing PLPs is utilized, then bandwidth efficiency is improved, but the ability to add new services requiring aggregated bandwidth from multiple PLPs is limited
Solution Approach 1:
The patent merges residual bandwidth resources from multiple different PLPs to create sufficient capacity for new services. By combining available bandwidth fragments across PLP A1, A2, B1, B2, and B3, the system can allocate aggregated bandwidth to new services that require more than what any single PLP can provide, thus resolving the contradiction between utilizing residual bandwidth and accommodating new services.
Solution Approach 2:
The patent creates a universal bandwidth allocation mechanism where any PLP with residual bandwidth can contribute to supporting new services. The system treats all PLPs as interchangeable resources that can be dynamically assigned based on service requirements, rather than being locked to specific functions, thereby enhancing both bandwidth utilization and service adaptability.
3Quantity of substance
If multiple PLPs are used for a single service, then the bandwidth capacity is sufficient, but the control and management complexity increases
Solution Approach 1:
The patent introduces a broadcast network controller as an intermediary that manages the distribution of IP streams across multiple PLPs. This controller automates the complex tasks of bandwidth calculation, PLP selection, and stream distribution, thereby providing sufficient transmission bandwidth through multiple PLPs while minimizing the management complexity that would otherwise burden the system operators.
Data Source
AI summary
A broadcast transmission system according to an aspect of the present invention includes a broadcast network controller and a broadcast network switch, thereby transmitting an Internet protocol (IP) stream for a service that cannot be transmitted through one physical layer pipe (PLP) by distributing the IP stream into a combination of one or more PLPs. In this case, the combined PLPs may be in one or more broadcast network frequency bands. The broadcast network controller determines the combination of PLPs, and the broadcast network switch distributes the IP stream into one or more PLPs according to a control command of the broadcast network controller.