Hybrid DTTV Downlink for Broadband Data Transmission
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Solution Overview
Problem
Current data communication methods, particularly satellite and fixed-line connections, face limitations in download speeds and capacity, which are inadequate for increasing demands from video streaming and online gaming due to restricted bandwidth.
Innovation Solution
A method and system that utilize digital terrestrial television (DTTV) broadcast signals for additional or alternative downlinks, combining fixed connections for uplinks and DTTV downlinks to enhance bandwidth and capacity, with dynamic transmitter and channel selection based on signal strength and usage criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite transmission is used for downlink, then coverage area is improved, but download speed is limited due to restricted bandwidth
Solution Approach 1:
The patent combines satellite transmission and DTTV broadcast into a hybrid downlink system. The satellite provides wide coverage while DTTV provides high bandwidth, merging the advantages of both systems to achieve both wide coverage and high download speeds simultaneously.
Solution Approach 2:
The DTTV broadcast system is made multi-functional by using it for both traditional television broadcasting and broadband data transmission. This allows the same infrastructure to serve dual purposes, increasing download speed without requiring separate dedicated infrastructure.
2Device complexity
If single satellite is used for downlink, then system complexity is reduced, but capacity is limited thereby restricting download speeds
Solution Approach 1:
The patent merges the capacity of a single satellite with the capacity of multiple DTTV transmitters. By combining these resources, the system achieves high download speeds without requiring multiple satellites, thus maintaining relatively low system complexity.
3Reliability
If fixed connection is used for broadband data, then connection stability is improved, but bandwidth is limited due to contention ratio
Solution Approach 1:
The patent merges the stable fixed connection (for uplink and control) with the high-bandwidth DTTV broadcast (for downlink). This combination maintains connection stability while dramatically increasing available bandwidth by bypassing the contention ratio limitation of fixed connections.
Solution Approach 2:
The patent transitions from a single-dimension fixed connection to a two-dimensional hybrid system combining fixed connection and wireless DTTV broadcast. This dimensional change enables simultaneous achievement of stability and high bandwidth.
4Speed
If DTTV broadcast signal is used for downlink, then download speed is increased due to additional bandwidth, but system complexity increases due to transmitter selection
Solution Approach 1:
The system implements self-service through automatic transmitter and multiplex selection algorithms. The end-user equipment autonomously detects available DTTV transmitters, evaluates signal quality, and selects the optimal combination without requiring manual configuration or complex user intervention, thus managing complexity automatically.
Solution Approach 2:
The system uses feedback mechanisms where the end-user equipment reports detected transmitter signals and quality metrics back to the service provider. This feedback enables dynamic selection and optimization of DTTV transmitters, allowing the system to adapt to changing conditions while managing complexity through automated decision-making.
Data Source
AI summary
Embodiments herein provide systems and methods for sending broadband data to end-users over a DTTV broadcast transmission. Systems and methods for receiving such data are also described. A wireless overlay system is set up by an Internet Service Provider/Communications Provider (ISP/CP) 11 by means of receiving from end-user equipment 27 data requests over a DSL uplink together with identification of at least one DTTV transmitter 21 23. The ISP/CP 11 provides an overlay controller 26 which causes routing of the requested data over a selected DTTV transmitter 21. At the end-user equipment, the requested data can be received from the DTTV broadcast and extracted for output.