HFC Cable Channel Mixing and Dividing for Dual Service
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Solution Overview
Problem
The existing Hybrid Fiber-Coax (HFC) network requires two separate channels to transmit both 6 MHz band data and broadband data, leading to increased costs for installation and maintenance, as subscriber apparatus tuning the 6 MHz frequency band cannot receive services provided through broadband cable channels.
Innovation Solution
An apparatus and method that mix and divide broadband data and band data to generate a second broadband data signal, allowing transmission through one channel using a data mixing unit and channel adapting unit, enabling broadband data to be bypassed to one subscriber apparatus and band data to another.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate channels are used to transmit both 6 MHz band data and broadband data, then both services can be provided to subscribers, but installation and maintenance costs increase
Solution Approach 1:
The patent merges 6 MHz band data and broadband data into a single channel by modulating band data onto a broadband carrier frequency. This allows both types of data to be transmitted simultaneously over one channel, eliminating the need for separate channels and reducing installation and maintenance costs while maintaining service coverage for both conventional and broadband subscribers
Solution Approach 2:
The single channel is designed to serve multiple functions by carrying both 6 MHz band data for conventional subscribers and broadband data for modern subscribers simultaneously. The channel adapting unit enables this multi-functionality by separating and directing appropriate data types to corresponding subscriber apparatus
2Productivity
If a broadband cable channel with frequency bandwidth over 6 MHz is provided, then data bandwidth over hundreds Mbps per channel can be used, but subscriber apparatus tuning a 6 MHz frequency band cannot receive the service
Solution Approach 1:
The patent segments the broadband data stream by separating 6 MHz band data and broadband data, then modulating the band data onto a broadband carrier. This segmentation allows conventional subscriber apparatus to extract and receive their required 6 MHz band services while broadband subscriber apparatus can access the full high-bandwidth channel, thus maintaining compatibility across different subscriber types
Solution Approach 2:
The channel adapting unit acts as an intermediary between the broadband channel and different types of subscriber apparatus. It receives the modulated signal, separates the band data from broadband data, and directs them to appropriate subscribers, enabling both conventional and broadband devices to access services through the same high-capacity channel
3Reliability
If two kinds of channels are required to transmit 6 MHz band data and broadband data, then both data types can be transmitted, but the cost for installing and maintaining additional channels increases
Solution Approach 1:
The patent combines transmission of 6 MHz band data and broadband data into a single physical channel through frequency modulation techniques. This merging maintains reliable transmission for both data types while eliminating the need for duplicate channel infrastructure, thereby reducing installation and maintenance costs without compromising transmission reliability
Data Source
AI summary
Provided is apparatus and method for transforming cable channel. The apparatus includes a data mixing unit for receiving and mixing a band data and a first broadband data, to thereby generate a second broadband data of a broadband cable channel, and a channel adapting unit for dividing a band data from the second broadband data received through the broadband cable channel, bypassing the second broadband data to a first subscriber apparatus and transmitting the band data to a second subscriber apparatus.