CN111614849A - Indoor communication system based on coaxial cable - Google Patents
Indoor communication system based on coaxial cable Download PDFInfo
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- CN111614849A CN111614849A CN202010296582.8A CN202010296582A CN111614849A CN 111614849 A CN111614849 A CN 111614849A CN 202010296582 A CN202010296582 A CN 202010296582A CN 111614849 A CN111614849 A CN 111614849A
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- coaxial cable
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/066—Telephone sets adapted for data transmision
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
Abstract
The invention discloses an indoor communication system based on a coaxial cable, which comprises a coaxial cable modulation and demodulation device and user equipment, wherein the coaxial cable modulation and demodulation device is in communication connection with the user equipment. And the coaxial cable modulation and demodulation device is arranged in the wall body and is connected with the household coaxial cable. And the home coaxial cable is used for supplying power to the coaxial cable modulation and demodulation device and providing a first radio frequency signal for the coaxial cable modulation and demodulation device. The invention innovatively provides an indoor communication system with a coaxial cable modem device placed in a wall body, which not only can solve the problem of large space occupation of the existing indoor communication system, but also can greatly reduce the risk of electric shock of a user; in addition, the invention also innovatively supplies power to the modulation and demodulation device through a coaxial cable network, thereby effectively avoiding the problems of electric shock hazard and accidental power failure which are possibly caused by an external power supply of the equipment. Therefore, the invention has the outstanding advantages of higher safety, stronger reliability and the like.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an indoor communication system based on a coaxial cable.
Background
With the development of science and technology and the improvement of living standard of people, broadcast television and broadband networks are inseparable with the lives of people, and with the emergence of new services such as ultra-high-definition video, AR/VR, self-media live broadcast and the like, the demands of people on the networks are higher and higher. The cable broadcast television system generally transmits video and audio programs to the outside through a Coaxial cable, and at present, a Coaxial cable network broadband access system mainly uses an HFC (Hybrid Fiber-Coaxial ) network system, which is a high-bandwidth network using an optical Fiber as a backbone network and a Coaxial cable as a branch network.
The equipment used in the HFC network system mainly comprises: an OLT (Optical Line Terminal) device, an ONU (Optical Network Unit) device, a Cable Modem office (Cable Bridge) device, and a Cable Modem Terminal (Cable Modem) device. Generally, in an FTTH (Fiber To The Home) scenario, The OLT device is located outdoors, The ONU device, The cable modem local side device and The cable modem terminal device are located indoors, and a user may interconnect each room through a coaxial cable network; in a non-FTTH scene, the OLT equipment, the ONU equipment and the cable modem local side are all located outdoors, the cable modem terminal equipment is located indoors, and a user can be connected to the cable modem terminal equipment through a coaxial cable and utilizes a network interface of the cable modem terminal equipment to carry out broadband communication. In the above scenario, the cable modem terminal device used in the entire indoor communication system is a desktop terminal device, and the existing indoor communication system must be equipped with a power adapter. Therefore, the existing indoor communication system not only occupies a large space, but also the external power adapter is very easy to cause electric shock hazard and unexpected power failure.
Therefore, how to solve the problems of large occupied space and easy electric shock and unexpected power failure in the existing indoor communication system becomes a technical problem to be solved and a focus of research all the time by those skilled in the art.
Disclosure of Invention
In order to solve the problems that the traditional indoor communication system occupies a large space and is easy to cause electric shock or accidental power failure and the like, the invention innovatively provides an indoor communication system based on a coaxial cable, which is more suitable for indoor communication scenes, thereby solving various problems in the prior art.
In order to achieve the technical purpose, the invention discloses an indoor communication system based on a coaxial cable, which comprises a coaxial cable modem device and at least one piece of user equipment, wherein the coaxial cable modem device is in wired and/or wireless communication connection with the user equipment; the coaxial cable modulation and demodulation device is arranged in the wall body and is connected with the household coaxial cable; the home coaxial cable is used for supplying power to the coaxial cable modulation and demodulation device and providing a first radio frequency signal to the coaxial cable modulation and demodulation device.
Furthermore, the coaxial cable modem device is arranged in an information panel, and the information panel is installed on the wall body.
Furthermore, the coaxial cable modulation and demodulation device comprises a radio frequency module, a power supply module, a modulation and demodulation module and a user interface module which are all arranged in the information panel; the radio frequency module is connected with the home coaxial cable and used for receiving a first radio frequency signal transmitted by the home coaxial cable and transmitting a second radio frequency signal to the home coaxial cable; the first radio frequency signal comprises an alternating current signal and a high frequency signal; the power supply module is connected with the radio frequency module and used for converting the alternating current signal into a direct current signal and supplying power to the radio frequency module, the modulation and demodulation module and the user interface module based on the direct current signal; the modulation and demodulation module is connected with the radio frequency module and is used for demodulating the high-frequency signal into user data and modulating the user data sent by the user interface module into a second radio frequency signal suitable for transmission of a coaxial cable entering a house; the user interface module is connected with the modulation and demodulation module and used for sending the user data sent by the modulation and demodulation module to the user equipment and sending the user data sent by the user equipment to the modulation and demodulation module.
Furthermore, the coaxial cable modem device further comprises a network management module arranged in the information panel; the network management module is respectively connected with the modulation and demodulation module and the user interface module and is used for configuring and managing a network at a user side; the power supply module is also used for supplying power to the network management module.
Furthermore, the radio frequency module, the power supply module, the modulation and demodulation module, the user interface module and the network management module are integrated on a circuit board; or the radio frequency module, the power supply module, the modulation and demodulation module, the user interface module and the network management module are of stacked structures to form at least two layered structures, adjacent layers of the structures are connected in a plug-in mode through connectors, and the sum of the thicknesses of all the layered structures is smaller than the depth of the information panel bottom box.
Further, the user interface module and the power supply module form a first layer structure; the modulation and demodulation module forms a second layer structure; the radio frequency module forms a third layer structure.
Furthermore, the first layer structure, the second layer structure and the third layer structure are all fixed in a bottom box of the information panel, and the first layer structure is close to the inner side of the wall body; the bottom box is provided with a first interface used for connecting the radio frequency module and a second interface used for connecting the user interface module.
Further, the radio frequency module is further configured to perform filtering processing on the first radio frequency signal to obtain the alternating current signal and the high frequency signal.
Further, the power module is further configured to convert the alternating current signal into a direct current signal through current rectification and voltage conversion.
Further, the information panel is an 86 information socket panel.
The invention has the beneficial effects that: the invention innovatively provides an indoor communication system with a coaxial cable modem device placed in a wall body, which not only can solve the problem of large space occupation of the existing indoor communication system, but also can greatly reduce the risk of electric shock of a user; in addition, the invention also innovatively supplies power to the modulation and demodulation device through a coaxial cable network, thereby effectively avoiding the problems of electric shock hazard and accidental power failure which are possibly caused by an external power supply of the equipment. Therefore, the invention has the outstanding advantages of higher safety, stronger reliability and the like. The invention can utilize widely distributed information socket panels and coaxial cables to achieve the effect of indoor network full coverage.
The invention can transmit high-frequency signals, can be suitable for high-bandwidth communication scenes and has the advantage of high communication quality. The modular design provided by the invention can greatly reduce the cost, so that the intelligent home broadband access system can be widely applied to the scenes of home broadband access and intelligent home interconnection, and has higher market value.
Drawings
Fig. 1 is a schematic diagram of a modular wall-mounted coaxial cable modem apparatus and a user equipment according to some embodiments of the present invention.
Fig. 2 is a schematic diagram of a wall-in coaxial cable modem device incorporated into an information panel according to some embodiments of the present invention.
Fig. 3 is a schematic data processing flow diagram of a wall-in coaxial cable modem apparatus according to some embodiments of the present invention.
In the figure, the position of the upper end of the main shaft,
100. a first layer structure;
200. a fourth layer structure;
300. a second layer structure;
400. a third layer structure;
500. a bottom box.
Detailed Description
The indoor communication system based on coaxial cable according to the present invention will be explained and explained in detail with reference to the drawings attached to the specification.
As shown in fig. 1, some embodiments of the present invention provide an indoor communication system based on coaxial cable. The indoor communication system comprises a coaxial cable modem device and at least one piece of user equipment, wherein the coaxial cable modem device is in wired and/or wireless communication connection with the user equipment. Specifically, the invention innovatively arranges the coaxial cable modem device in a wall body, and the coaxial cable modem device can be connected with a coaxial cable of a house. The invention innovatively utilizes the home coaxial cable to supply power for the coaxial cable modulation and demodulation device, and utilizes the home coaxial cable to provide a first radio frequency signal for the coaxial cable modulation and demodulation device.
In some embodiments of the present invention, as shown in fig. 2, the coaxial cable modem device can be disposed in an information panel that is mounted on a wall, such as a wall embedded in a user's home, for example, an 86 information jack panel. Specifically, the coaxial cable modem device in some embodiments of the present invention includes a radio frequency module, a power module, a modem module, and a user interface module, all disposed in the information panel. Optionally, the coaxial cable modem apparatus according to some embodiments of the present invention may further include a network management module disposed in the information panel, and the network management module (for short, management module) may be optionally included or excluded according to the actual function requirement, cost, and the like. Therefore, the invention can provide the information panel with the coaxial cable modem device, namely, the coaxial cable modem device is placed in the 86 information socket panel in the home of the user, thereby effectively reducing the occupation of the space in the home of the user.
As shown in fig. 1 and 3, the rf module may be connected to the home coaxial cable, the power module, and the modem module, respectively, and is configured to receive a first rf signal transmitted from the home coaxial cable and transmit a second rf signal to the home coaxial cable. The rf module in some embodiments of the present invention is further configured to perform low-pass or high-pass or band-pass filtering on the first rf signal, so as to obtain a desired ac signal and a desired high-frequency signal, and to sequentially send the filtered signals to the modem module in the second layer 300, the power module in the first layer 100, and the user interface module. The radio frequency module in some embodiments of the present invention is further configured to perform power conversion or frequency conversion on the high-frequency signal, and transmit the processed signal to the modem module. Meanwhile, the radio frequency module of some embodiments of the present invention may also complete the switching between the reception and the transmission of signals at the same time. The first radio frequency signal comprises an alternating current signal and a high frequency signal.
As shown in fig. 1 and 3, the power module may be connected to the radio frequency module, the modem module, and the user interface module, respectively, and is configured to convert an ac electrical signal into a dc electrical signal and supply power to the radio frequency module and the modem module based on the dc electrical signal. The modulation and demodulation device of the invention is supplied with power through a coaxial cable network, thereby reducing the electric shock hazard and accidental power failure which are easily caused by an external power supply of the existing terminal. In some embodiments of the present invention, the power module is further configured to convert the ac electrical signal into the dc electrical signal by filtering, current rectifying, and voltage converting. The voltage of the low-voltage alternating current power supply transmitted on the coaxial cable is generally less than 36VAC of human body safety voltage, and the alternating current frequency is 50-200Hz, so that the power supply of the invention can provide 0-36W of power supply power, and can meet the power supply requirements of other modules.
As shown in fig. 1 and 3, the modem module is connected to the rf module and the user interface module, and the modem module is used for modulation and demodulation. The radio frequency module can be used for demodulating a high-frequency signal into user data and modulating the user data sent by the user interface module into a second radio frequency signal suitable for transmission of a coaxial cable for home entry; therefore, the network data of the user can be modulated into the radio frequency signal suitable for coaxial cable transmission and then transmitted, and the radio frequency signal is demodulated into the original user data to be received by the user. The modem module according to some embodiments of the present invention may adopt an OFDM (orthogonal frequency division Multiplexing) modulation scheme and a TDMA (Time division multiple access) transmission scheme, so that the modem module can provide a throughput of 1000 Mbps.
As shown in fig. 1 and 3, the user interface module is connected to the modem module and the power module, respectively, and is configured to send user data sent by the modem module to the user equipment, and send user data sent by the user equipment to the modem module. In particular, the user interface module may be a wireless interface module or a wired interface module. The wireless access interface may be, for example, a WiFi access interface, and the user may connect to the internet (network) by way of wireless WiFi access. The wired access interface may be a standard network cable interface, such as an RJ45 interface. And when the user interface module is the wireless interface module, the power supply module is also used for supplying power to the wireless interface module. In some embodiments of the invention, an adaptive access mode of 10/100/1000Mbps can be provided. In addition, the wireless access interface of the invention can also be a Bluetooth interface, a Zigbee interface or other wireless interfaces conforming to the protocol of the Internet of things.
As shown in fig. 1 and 3, in some alternative embodiments, the present invention has a network management module (which may be simply referred to as a management module). The management module is respectively connected with the modulation and demodulation module and the user interface module, and the management module is used for configuring and managing a network at a user side, such as fault management, flow management, configuration management, performance management, safety management and the like. The network management module in some embodiments of the present invention may further be configured to shape and rectify the demodulated user data, and further configured to transmit the shaped and rectified data to the user interface module. When the device has a network management module, the power module can also be used to supply power to the network management module.
As a preferred structure, other embodiments of the present invention further innovatively provide a coaxial cable modem device with a stacked structure, forming a layered structure with at least two layers. In some embodiments of the present invention, the user interface module and the power module form a first layer structure 100, the modem module forms a second layer structure 300, and the radio frequency module forms a third layer structure 400. If the network management module is provided, the network management module forms a fourth layer structure 200. The modulation and demodulation device adopts a modular design, realizes the extension or simplification of the functions of the coaxial cable network access equipment by increasing and decreasing modules, and can effectively reduce the product cost. In some embodiments of the present invention, the first layer structure 100, the fourth layer structure 200, the second layer structure 300, and the third layer structure 400 are sequentially disposed, and adjacent layer structures are connected by inserting connectors, so as to realize interlayer insertion. The device size can be set within 86 information receptacle panel size (86 mm), the sum of all layer structure thicknesses being less than the depth of the information panel back box (50 mm).
As shown in fig. 2, the first layer structure 100, the second layer structure 300, and the third layer structure 400 are all fixed in the bottom box 500 of the information panel, in this embodiment, the first layer structure 100 is closest to the inner side of the wall, which not only helps to prevent the WIFI signal from being blocked, but also facilitates the user interface to be exposed on the surface of the information panel; then, the fourth layer structure 200, the second layer structure 300, and the third layer structure 400 may be sequentially arranged, and the rf module is disposed at the outermost side (top layer), which may effectively prevent the rf signal from being interfered by other signals, so the present invention may provide high quality rf signal transmission. The bottom case 500 is provided with a first interface for connecting the rf module and a second interface for connecting the user interface module, and the bottom case 500 may be made of PVC. It should be understood that other embodiments of the present invention can integrate the functional modules on a circuit board, and then place the circuit board in the bottom case 500 of the information panel, thereby meeting the requirements of miniaturization and high integration.
As shown in fig. 3, some embodiments of the invention may operate as follows: the radio frequency module receives a signal on the coaxial cable, and performs filtering processing on the signal to obtain an alternating current signal and a high-frequency signal; then, the filtered power supply signal is sent to a power supply module for power supply rectification and voltage conversion so as to convert an alternating current power supply into a proper direct current power supply, and the proper direct current power supply is supplied to a radio frequency module, a modulation and demodulation module and a management module for use; and the filtered high-frequency signal is subjected to power control and up/down conversion processing on a radio frequency module, and then the signal subjected to frequency conversion processing is transmitted to a modulation and demodulation module. If the management module is configured, after the modulation and demodulation module demodulates, the signal is transmitted to the management module, according to the management information configured by the user, the management module shapes and rectifies the signal under the condition of matching the rule, and then the rectified signal is transmitted to the user interface module; if no management module is available, the demodulated signal is directly transmitted to the user interface module. The user interface module may provide the received signal (data) to the user equipment through a wired interface or a wireless interface after receiving the signal.
The invention can reasonably combine the modules, thereby realizing different functions. The combined device is placed in an 86 information socket panel in a user home, so that the problem that the traditional terminal equipment occupies the space of the user home can be solved. In addition, the power supply problem of the equipment is solved by supplying power through the coaxial cable, and a user does not need to additionally equip a power adapter, so that the reliability and the expandability of the equipment are greatly improved; the invention can also thoroughly solve the problem of electric shock and unexpected power failure possibly caused by the existing modulation and demodulation equipment.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic Gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic Gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and simplifications made in the spirit of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. An indoor communication system based on coaxial cable, characterized in that, the indoor communication system comprises a coaxial cable modem and at least one user equipment, the coaxial cable modem is connected with the user equipment in wired and/or wireless communication;
the coaxial cable modulation and demodulation device is arranged in the wall body;
the home coaxial cable is used for supplying power to the coaxial cable modulation and demodulation device and providing a first radio frequency signal to the coaxial cable modulation and demodulation device.
2. The coaxial cable-based indoor communication system according to claim 1,
the coaxial cable modulation and demodulation device is arranged in an information panel, and the information panel is arranged on the wall body.
3. The coaxial cable-based indoor communication system according to claim 2,
the coaxial cable modulation and demodulation device comprises a radio frequency module, a power supply module, a modulation and demodulation module and a user interface module which are all arranged in an information panel;
the radio frequency module is used for receiving a first radio frequency signal transmitted by the home coaxial cable and transmitting a second radio frequency signal to the home coaxial cable; the first radio frequency signal comprises an alternating current signal and a high frequency signal;
the power supply module is used for converting the alternating current signal into a direct current signal and supplying power to the radio frequency module, the modulation and demodulation module and the user interface module based on the direct current signal;
the modulation and demodulation module is used for demodulating the high-frequency signal into user data and modulating the user data sent by the user interface module into a second radio-frequency signal suitable for transmission of a coaxial cable entering a house;
the user interface module is used for sending the user data sent by the modulation and demodulation module to the user equipment and sending the user data sent by the user equipment to the modulation and demodulation module.
4. The coaxial cable-based indoor communication system according to claim 3,
the coaxial cable modulation and demodulation device also comprises a network management module arranged in the information panel;
the network management module is used for configuring and managing a network at a user side;
the power supply module is also used for supplying power to the network management module.
5. The coaxial cable-based indoor communication system according to claim 4,
the radio frequency module, the power supply module, the modulation and demodulation module, the user interface module and the network management module are integrated on a circuit board; or the radio frequency module, the power supply module, the modulation and demodulation module, the user interface module and the network management module are of stacked structures to form at least two layered structures, adjacent layers of the structures are connected in a plug-in mode through connectors, and the sum of the thicknesses of all the layered structures is smaller than the depth of the information panel bottom box.
6. The coaxial cable-based indoor communication system according to claim 3 or 4,
the user interface module and the power module form a first layer structure;
the modulation and demodulation module forms a second layer structure;
the radio frequency module forms a third layer structure.
7. The coaxial cable-based indoor communication system according to claim 6,
the first layer structure, the second layer structure and the third layer structure are all fixed in a bottom box of the information panel, and the first layer structure is close to the inner side of the wall body; the bottom box is provided with a first interface used for connecting the radio frequency module and a second interface used for connecting the user interface module.
8. The coaxial cable-based indoor communication system according to claim 3,
the radio frequency module is further configured to perform filtering processing on the first radio frequency signal to obtain the alternating current signal and the high frequency signal.
9. The coaxial cable-based indoor communication system according to claim 3 or 4,
the power supply module is also used for converting the alternating current signal into a direct current signal in a current rectification and voltage conversion mode.
10. The coaxial cable-based indoor communication system of claim 2, wherein the information panel is an 86 information jack panel.
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Application publication date: 20200901 |