Category 5 Cable Multiplexing for Ethernet and Mobile Signals
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Solution Overview
Problem
Existing solutions face challenges in providing deep indoor coverage for both Ethernet and mobile communication signals, especially in residential areas, due to high-frequency signal interference and the difficulty of deploying outdoor antennas, which results in inadequate indoor signal penetration and coordination issues.
Innovation Solution
The system utilizes category 5 cables to multiplex Ethernet and mobile communication signals, employing frequency conversion, impedance matching, and power over Ethernet to transmit signals through existing category 5 cables, eliminating the need for re-laying cables and simplifying home coordination by using existing home category 5 cables to transmit GSM, CDMA, TD-SCDMA, and WCDMA signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If outdoor antennas are deployed for mobile communication signal coverage, then signal coverage can be achieved, but it becomes difficult to obtain permission in residential areas and coordinate with property management
Solution Approach 1:
The patent uses existing category 5 cables as an intermediary medium to transmit mobile communication signals from the outdoor base station through the building's existing wiring infrastructure to indoor user terminals, avoiding the need to deploy new outdoor antennas in each residential area while maintaining signal coverage
Solution Approach 2:
The patent enables category 5 cables to serve multiple functions: originally designed for Ethernet data transmission, they are now also used to carry mobile communication signals, allowing a single infrastructure to support both broadband internet and mobile phone services without requiring separate deployment channels
2Ease of manufacture
If category 5 cables are used to transmit both Ethernet and mobile communication signals, then cable deployment cost is reduced, but signal interference between the two types of signals increases
Solution Approach 1:
The patent divides the category 5 cable into multiple independent wire pairs, assigning different pairs to different signal types (e.g., pairs 1-2 and 3-6 for Ethernet, pairs 4-5 and 7-8 for mobile communication signals), thereby isolating signals physically within the same cable structure to minimize interference
Solution Approach 2:
The patent introduces filter circuits and impedance matching components as intermediary elements between different signal paths within the category 5 cable system, which selectively pass desired frequencies while blocking or attenuating interfering signals from other services sharing the same cable
3Reliability
If high-frequency 3G signals are transmitted through existing infrastructure, then indoor coverage can be improved, but signal penetration through walls and obstacles becomes insufficient
Solution Approach 1:
The patent uses the building's existing category 5 cable wiring as an intermediary transmission medium that bypasses physical obstacles like walls and obstacles, carrying mobile communication signals from outdoor base stations directly to indoor locations through the building's internal wiring infrastructure, thereby avoiding penetration loss through external barriers
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides cost-effective, deep indoor coverage for both Ethernet and mobile communication signals without re-deploying cables, addressing the challenges of signal penetration and coordination, and allows for flexible deployment of services without requiring power at the user's home.
Implementation Method 1
the near-end host unit is connected with the remote-end user units through category 5 cables or category 5 enhanced cables for transmitting the Ethernet signals and the mobile communication signals
Implementation Method 2
Two insulated copper wires are twisted together based on a certain density, so the degree of signal interference can be reduced, and the electric waves radiated by each wire during transmission can be offset by the electric waves emitted by the other wire
Data Source
AI summary
An access system and method for transmitting Ethernet signals and mobile communication signals. The system includes a near-end host unit and remote-end user units. Through the near-end host unit, the Ethernet signals and mobile communication signals can be combined. The near-end and remote-end host units are connected through four pairs of twisted pairs. The combined Ethernet and mobile communication signals are sent to a user terminal for providing broadband access service and wireless access service. Premises network resources can be used without re-laying category 5 cables, so the investment is less and it is quick and convenient to provide service. Furthermore there needs to be added only one host unit beside the optical network unit equipment, and replace the user terminal simultaneously. Power is not needed to be taken at the user's home. The placement position of the terminal is flexible without being limited by the power-taking positions.