Multimedia Network Data Processing System for Unidirectional Optical Fiber
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Solution Overview
Problem
Current broadcast television and telecommunication networks fail to meet the bandwidth ratio requirements for asymmetric services like video streaming and gaming, and the TCP/HTTP protocol is not well-compatible with network systems that separate unidirectional and bidirectional channels, limiting the quality and richness of video-on-demand services.
Innovation Solution
A multimedia network data processing system that uses a head-end switch to encapsulate TCP/HTTP protocol-based multimedia data into UDP packets for transmission over a unidirectional broadcasting optical fiber network, allowing for protocol conversion and separation of data channels, enabling efficient video-on-demand services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a network system separates unidirectional and bidirectional channels (I-PON system), then the bandwidth ratio for asymmetric services can be satisfied to a certain extent, but the TCP/HTTP protocol cannot be well compatible and many advantages of OTT services cannot be exploited
Solution Approach 1:
The patent introduces a gateway as an intermediary device between the unidirectional broadcasting optical fiber network and terminal devices. The gateway performs protocol conversion, converting TCP/HTTP protocol data into UDP protocol data suitable for unidirectional transmission. This mediator resolves the incompatibility between TCP/HTTP protocol requirements for bidirectional channels and the unidirectional channel architecture, enabling OTT services to function properly without requiring complex bidirectional channel separation.
2Adaptability or versatility
If EPON or GPON transmission schemes are used, then fixed uplink and downlink rates are provided, but the downlink rate to uplink rate ratio cannot meet the asymmetric services requirement which reaches up to several hundreds
Solution Approach 1:
The patent changes the transmission parameter from fixed symmetric rates (EPON 1.25G:1.25G) or fixed asymmetric rates (GPON 2.5G:1.25G) to flexible asymmetric rates by using unidirectional broadcasting optical fiber networks with capacities of 10G, 40G, or 100G. This allows the downlink rate to reach several hundreds times the uplink rate, matching the bandwidth requirements of asymmetric services like video streaming and online gaming.
3Productivity
If TCP/HTTP protocol is used for video-on-demand services, then easy and smooth transmission of large volume data is achieved, but the protocol is highly dependent on bidirectional physical channel and cannot be well compatible with separated unidirectional and bidirectional channels
Solution Approach 1:
The patent substitutes the TCP/HTTP protocol mechanism (which requires bidirectional acknowledgment and error control) with the UDP protocol mechanism for data transmission over the unidirectional optical fiber network. UDP's simpler, connectionless nature is better suited for unidirectional transmission, while the gateway performs necessary protocol conversion to maintain data integrity and enable video-on-demand services without the overhead of TCP's bidirectional handshaking.
Data Source
AI summary
The present disclosure relates to a multimedia network data processing system, comprising: a head-end switch, which transmits multimedia network data of the data that is sent from a server to a terminal device to a head-end network processor, wherein the multimedia network data is multimedia network data based on the TCP/HTTP protocol; a head-end network processor, which encapsulates the multimedia network data to form a UDP packet and sends the UDP packet to a unidirectional broadcasting optical fiber network; and a data processing module, which receives the UDP packet from the unidirectional broadcasting optical fiber network and decapsulates the UDP packet to obtain the multimedia network data based on the TCP/HTTP protocol for the terminal device to play. A video-on-demand service based on the TCP/HTTP protocol can be realized on the basis of the existing network systems in which the unidirectional channel and the bidirectional channel are separated. And the programs transmitted by radios and TVs can be enriched while the requirements for bandwidth of uplink transmission and bandwidth of downlink transmission can be satisfied.