CN213028319U - Two-in-one local side equipment - Google Patents

Abstract

The utility model discloses a two-in-one local side device, which comprises an upper connection module, a CPU and exchange module, a G.hn protocol processing module and a duplexer module; the upper connection module is connected with the CPU and the exchange module and is used for receiving the broadband data network; the CPU and the exchange module are connected with the G.hn protocol processing module and are used for configuring and managing the uplink module and the G.hn protocol processing module; the G.hn protocol processing module is connected with the duplexer module and used for processing the mutual conversion of the data in the Ethernet protocol format and the data in the G.hn protocol format and modulating the data in the G.hn protocol format to the coaxial cable for transmission; the duplexer module is used for receiving the broadband service data transmitted from the G.hn protocol processing module and receiving the input CATV television signal data, and integrating and outputting the data of the broadband service data and the CATV television signal data. The utility model discloses a G.hn coaxial access technical scheme who provides has effectively solved the limitation of current EOC (HomePlugAV) technique, makes the customer realize the biggest investment profit ratio in the two-way transformation of cable TV network.

Description

Two-in-one local side equipment

Technical Field

The utility model relates to a network data transmission field, the more specifically two unification local side equipment that says so.

Background

At present, there are three main schemes for bidirectional transformation of cable television network: firstly, adopting a CMTS scheme; secondly, adopting a coaxial cable home-entry scheme (EPON + EOC scheme); thirdly, an optical fiber-to-the-home scheme (FTTH scheme) is adopted, but the problems of limitation and high cost exist.

Therefore, there is a need to design a reasonable solution that better conforms to the current two-way transformation of the cable tv network.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the not enough of prior art, provide two unification local side equipment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the two-in-one local side equipment comprises an uplink module, a CPU (Central processing Unit), an exchange module, a G.hn protocol processing module and a duplexer module; the upper connection module is connected with the CPU and the exchange module and is used for receiving a broadband data network; the CPU and the exchange module are connected with the G.hn protocol processing module and are used for configuring and managing the uplink module and the G.hn protocol processing module; the G.hn protocol processing module is connected with the duplexer module and is used for processing the mutual conversion of the data in the Ethernet protocol format and the data in the G.hn protocol format and modulating the data in the G.hn protocol format to a coaxial cable for transmission; the duplexer module is used for receiving the broadband service data transmitted from the G.hn protocol processing module and receiving the input CATV television signal data, and integrating and outputting the data of the broadband service data and the CATV television signal data.

The further technical scheme is as follows: the uplink module comprises two SFP interfaces used for being connected with an Ethernet optical module and an EPON optical module or a GPON optical module; the EPON optical module or the GPON optical module is used for accessing a broadband data network through an optical fiber.

The further technical scheme is as follows: the upper connection module is connected with the CPU and the exchange module through a 10000Base-X interface.

The further technical scheme is as follows: the CPU and the exchange module are connected with four G.hn protocol processing modules through four SGMII interfaces.

The further technical scheme is as follows: and the G.hn protocol processing module is connected with the four duplexer modules through four coaxial cables.

The further technical scheme is as follows: also includes a CATV distributor; the CATV distributor is configured to divide the received CATV television signal data into four paths and transmit the four paths to the diplexer module via four coaxial cables.

The further technical scheme is as follows: the duplexer module comprises a G.hn signal input module, a CATV filtering module, a G.hn filtering module and a separator module; the G.hn signal input module is connected with the separator module and used for filtering out high-frequency signals, the CATV filtering module is connected with the separator module and used for carrying out capacitance filtering processing on the CATV signals, the G.hn filtering module is connected with the separator module and used for carrying out capacitance filtering processing on the G.hn signals, and the separator module is used for dividing the received signals into two parts and outputting the two parts.

The further technical scheme is as follows: the G.hn signal input module comprises an isolation transformer T3, a TVS diode, an inductor L2, an inductor L3, an inductor L4, an inductor L5, an inductor L6, a capacitor C44, a capacitor C25, a capacitor C29, a capacitor C32, a capacitor C34, a capacitor C23, a capacitor C27, a capacitor C31, a capacitor C33 and a capacitor C35; the isolation transformer T3 comprises a first pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin and an eighth pin; a fifth pin, a sixth pin, a seventh pin, and an eighth pin of the isolation transformer T3 are connected to two pairs of g.hn data signals RX _ INP _ A, RX _ INN _ a output by the g.hn protocol processing module and LD _ OUTP _ A, LD _ OUTN _ a signals, two ends of the TVS diode are connected to the first pin and the fourth pin of the isolation transformer T3, respectively, the fourth pin of the isolation transformer T3 is connected to two ends of an inductor L2, an inductor L3, an inductor L4, an inductor L5, an inductor L6, and a capacitor C44 in sequence, the capacitor C25, the capacitor C29, and the capacitor C29 are connected in parallel to two ends of the inductor L29, and front ends of the inductor L29, the capacitor C29, and the capacitor C29 are connected to ground, the capacitor C29.

The further technical scheme is as follows: the splitter module includes splitter T4; the separator T4 comprises a first pin, a fourth pin and a sixth pin; the CATV filtering module comprises an inductor L13, an inductor L17, an inductor L14, an inductor L15, an inductor L16, a capacitor C200, a capacitor C202, a capacitor C204, a capacitor C203, a capacitor C209, a capacitor C201, a capacitor C206, a capacitor C205, a capacitor C208 and a capacitor C207; a fourth pin of the splitter T4 is connected to the capacitor C44, a sixth pin of the splitter T4 is sequentially connected to the inductor L13, the inductor L17, the inductor L14, the inductor L15, the inductor L16, and the capacitor C200, the capacitor C202, the capacitor C204, the capacitor C203, and the capacitor C2029 are respectively connected in parallel to two ends of the inductor L13, the inductor L17, the inductor L14, and the inductor L15, and front ends of the inductor L13, the inductor L17, the inductor L14, and the inductor L15 are respectively connected to ground, where the capacitor C201, the capacitor C206, the capacitor C205, the capacitor C208, and the capacitor C207 are connected to front ends of the inductor L3534, the inductor L14.

The further technical scheme is as follows: the G.hn filtering module comprises a capacitor C469, an inductor L52, an inductor L53, an inductor L54, a capacitor C486, an inductor L55, a resistor R491, a capacitor C472, an inductor L56, a capacitor C473, an inductor L57, a capacitor C474, a resistor R489 and a capacitor C457; the first pin of the separator T4 is connected with the capacitor C469, the inductor L52, the inductor L53, the inductor L54 and the capacitor C486 in sequence, the access point of the capacitor C469 is connected with the inductor L55 and the resistor R491 in a point-to-ground manner, the access point of the inductor L52 is connected with the capacitor C472 in a point-to-ground manner, the access point of the inductor L53 is connected with the inductor L56 and the capacitor C473 in a point-to-ground manner, the access point of the inductor L54 is connected with the inductor L57 and the capacitor C474 in a point-to-ground manner, and the access point of the capacitor 486 is connected with the resistor R489.

Compared with the prior art, the utility model beneficial effect be: the utility model discloses a G.hn coaxial access technical scheme who provides has effectively solved the limitation of current EOC (HomePlugAV) technique, makes coaxial network obtain very big promotion from optical node to user side physical layer speed, uplink and downlink transmission time delay and interference killing feature through this scheme, makes the customer realize the biggest investment profit ratio in cable TV network bidirectional transformation.

The foregoing is a summary of the present invention, and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, which is provided for the purpose of illustration and understanding of the present invention.

Drawings

Fig. 1 is a block diagram of an embodiment of a two-in-one central office device according to the present invention;

fig. 2 is a schematic circuit diagram of a duplexer module in an embodiment of the present invention.

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to the following specific embodiments, but not limited thereto.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," some embodiments, "" an example, "" a specific example, "" or "some examples," or the like, 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 invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily 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 described in this specification can be combined and combined by one skilled in the art.

The utility model provides a two unification local side equipment, the utility model discloses a plan and propose to the two-way transformation of cable television network to present needs, although prior art has given three kinds of plans to the two-way transformation of cable television network, but all have the defect separately, and the defect of these three kinds of schemes specifically as follows:

the first scheme is the CMTS scheme, which transmits upstream/downstream data on the original HFC line, requiring a modification to the original HFC line. CMTS technology is mainly applied to some provincial cities and richer cities in China, and most of the cities stop the construction of large C (CMTS) networks at present, and the CMTS technology is expanded by using small C (C-DOCSIS) technology.

The second scheme is an EPON + EOC scheme, and the EPON + EOC scheme meets the basic requirements of early cable television network bidirectional transformation to a certain extent, thereby not only protecting the original coaxial access network resources, but also effectively saving the investment. At present, the mainstream EOC technical standard of cable television network double modification is homeplug av, but with the increasing demand of the final client of the cable television network on bandwidth and the increasing competition, the EOC technical limitation of the homeplug av system becomes more and more prominent, for example, the system throughput is low, the time delay is large, and after the number of access terminal users is increased, the related indexes such as the system throughput and the time delay are deteriorated, and the user access experience is influenced.

The third scheme is an optical fiber to The home scheme (i.e., FTTH scheme), which means that all The lines from The operator front end to The user network terminal use optical fibers, thereby implementing an access mode for voice, data, broadcast television and various intelligent services. The scheme not only has the advantages of bandwidth and time delay which cannot be compared with those of a CMTS and an EPON + EOC, but also can well solve the problem of high failure rate caused by the active optical node, and becomes a preferred scheme of more newly-built networks. However, for the existing cable television network, the original coaxial cable resource needs to be abandoned and the rubber-insulated optical cable needs to be laid again to the home of the user by using the FTTH mode for reconstruction, so that the existing resource cannot be fully utilized, the investment is protected, and much inconvenience is brought to the client due to the need of rewiring. Therefore, the technology is mainly applied to the scene of the new establishment of the bidirectional network.

Due to the above, the existing three schemes are not ideal. The technical solution of the present invention is described below by specific examples.

Referring to fig. 1, the two-in-one central office device includes an uplink module, a CPU and switching module, a g.hn protocol processing module, a duplexer module, and a CATV distributor; the upper connection module is connected with the CPU and the exchange module and is used for receiving the broadband data network; the CPU and the exchange module are connected with the G.hn protocol processing module and are used for configuring and managing the uplink module and the G.hn protocol processing module; the G.hn protocol processing module is connected with the duplexer module and used for processing the mutual conversion of the data in the Ethernet protocol format and the data in the G.hn protocol format and modulating the data in the G.hn protocol format to the coaxial cable for transmission; the duplexer module is used for receiving the broadband service data transmitted from the G.hn protocol processing module, receiving the input CATV television signal data, and integrating and outputting the data; and the CATV distributor and duplexer module is used for dividing the received CATV television signal data into four paths and transmitting the four paths of data to the duplexer module through four coaxial cables.

Specifically, the uplink module comprises two SFP interfaces used for connecting with an ethernet optical module, and an EPON optical module or a GPON optical module; the EPON optical module or the GPON optical module is used for accessing a broadband data network through an optical fiber. The upper connection module is connected with the CPU and the exchange module through a 10000Base-X interface. The CPU and the exchange module are connected with four G.hn protocol processing modules through four SGMII interfaces. And the G.hn protocol processing module is connected with the four duplexer modules through four coaxial cables.

Further, referring to fig. 2, the duplexer module includes a g.hn signal input module, a CATV filtering module, a g.hn filtering module, and a splitter module; the G.hn signal input module is connected with the separator module and used for filtering out high-frequency signals, the CATV filtering module is connected with the separator module and used for carrying out capacitance filtering processing on the CATV signals, the G.hn filtering module is connected with the separator module and used for carrying out capacitance filtering processing on the G.hn signals, and the separator module is used for dividing the received signals into two parts and outputting the two parts.

In this embodiment, the g.hn signal input module includes an isolation transformer T3, a TVS diode, an inductor L2, an inductor L3, an inductor L4, an inductor L5, an inductor L6, a capacitor C44, a capacitor C25, a capacitor C29, a capacitor C32, a capacitor C34, a capacitor C23, a capacitor C27, a capacitor C31, a capacitor C33, and a capacitor C35; the isolation transformer T3 comprises a first pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin and an eighth pin; the fifth pin, the sixth pin, the seventh pin and the eighth pin of the isolation transformer T3 are connected to two pairs of g.hn data signals RX _ INP _ A, RX _ INN _ a and LD _ OUTP _ A, LD _ OUTN _ a signals output by the g.hn protocol processing module, so as to implement isolation between the chip terminal and the external interface connector and the chassis ground. Two ends of the TVS diode are respectively connected to the first pin and the fourth pin of the isolation transformer T3, so as to prevent external coupling from releasing in time after high voltage is introduced. An inductor L2, an inductor L3, an inductor L4, an inductor L5, an inductor L6 and a capacitor C44 are sequentially connected to a fourth pin of the isolation transformer T3, a capacitor C25, a capacitor C29, a capacitor C32 and a capacitor C34 are respectively connected to two ends of the inductor L2, the inductor L3, the inductor L4 and the inductor L5 in parallel, and capacitors C23, C27, C31, C33 and C35 are respectively connected to the front ends of the inductor L2, the inductor L3, the inductor L4, the inductor L5 and the inductor L6 to ground, so that high-frequency signals above 250M can be effectively filtered. In this embodiment, the isolation transformer T3 has a model of UT11431S, and the TVS diode has a model of PJGBLC 12C.

In this embodiment, the splitter module includes a splitter T4; the splitter T4 includes a first pin, a fourth pin, and a sixth pin; the g.hn signal is filtered to remove the high frequency signal, and then connected to the first pin of the splitter T4, the splitter T4 divides the original 1 data signal into 2 data signals, and outputs the data signals through the sixth pin and the first pin of the splitter T4. In this embodiment, the separator T4 is of the model MAPDC 0030.

In this embodiment, the CATV filtering module includes an inductor L13, an inductor L17, an inductor L14, an inductor L15, an inductor L16, a capacitor C200, a capacitor C202, a capacitor C204, a capacitor C203, a capacitor C209, a capacitor C201, a capacitor C206, a capacitor C205, a capacitor C208, and a capacitor C207; a fourth pin of the splitter T4 is connected to the capacitor C44, a sixth pin of the splitter T4 is connected to the inductor L13, the inductor L17, the inductor L14, the inductor L15, the inductor L16, and the capacitor C200 in sequence, the capacitor C202, the capacitor C204, the capacitor C203, and the capacitor C2029 are connected in parallel to two ends of the inductor L13, the inductor L17, the inductor L14, and the inductor L15, respectively, and front ends of the inductor L13, the inductor L17, the inductor L14, and the inductor L15 are connected to ground, respectively, by the capacitor C201, the capacitor C206, the capacitor C205, the capacitor C208, and the capacitor C207.

In this embodiment, the g.hn filter module includes a capacitor C469, an inductor L52, an inductor L53, an inductor L54, a capacitor C486, an inductor L55, a resistor R491, a capacitor C472, an inductor L56, a capacitor C473, an inductor L57, a capacitor C474, a resistor R489, and a capacitor C457; a first pin of the separator T4 is connected to a capacitor C469, an inductor L52, an inductor L53, an inductor L54, and a capacitor C486 in sequence, an access point of the capacitor C469 is connected to ground through an inductor L55 and a resistor R491, an access point of the inductor L52 is connected to ground through a capacitor C472, an access point of the inductor L53 is connected to ground through an inductor L56 and a capacitor C473, an access point of the inductor L54 is connected to ground through an inductor L57 and a capacitor C474, and an access point of the capacitor 486 is connected to ground through a resistor R489 and a capacitor C457.

To sum up: the utility model discloses a G.hn coaxial access technical scheme who provides has effectively solved the limitation of current EOC (HomePlugAV) technique, makes coaxial network obtain very big promotion from optical node to user side physical layer speed, uplink and downlink transmission time delay and interference killing feature through this scheme, makes the customer realize the biggest investment profit ratio in cable TV network bidirectional transformation.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims (10)

1. The two-in-one local side equipment is characterized by comprising an uplink module, a CPU and exchange module, a G.hn protocol processing module and a duplexer module; the upper connection module is connected with the CPU and the exchange module and is used for receiving a broadband data network; the CPU and the exchange module are connected with the G.hn protocol processing module and are used for configuring and managing the uplink module and the G.hn protocol processing module; the G.hn protocol processing module is connected with the duplexer module and is used for processing the mutual conversion of the data in the Ethernet protocol format and the data in the G.hn protocol format and modulating the data in the G.hn protocol format to a coaxial cable for transmission; the duplexer module is used for receiving the broadband service data transmitted from the G.hn protocol processing module and receiving the input CATV television signal data, and integrating and outputting the data of the broadband service data and the CATV television signal data.

2. The two-in-one office end device of claim 1, wherein the add-on module comprises two SFP interfaces for connecting with an ethernet optical module, and an EPON optical module or a GPON optical module; the EPON optical module or the GPON optical module is used for accessing a broadband data network through an optical fiber.

3. The two-in-one central office end device according to claim 1, wherein the uplink module is connected to the CPU and the switching module through a 10000Base-X interface.

4. The two-in-one office end device according to claim 1, wherein the CPU and the switching module are connected to four g.hn protocol processing modules through four SGMII interfaces.

5. The two-in-one office end device according to claim 1, wherein the g.hn protocol processing module is connected to the four duplexer modules via four coaxial cables.

6. The two-in-one office device of claim 1, further comprising a CA TV distributor; the CATV distributor is configured to divide the received CATV television signal data into four paths and transmit the four paths to the diplexer module via four coaxial cables.

7. The two-in-one central office device of claim 1, wherein the diplexer module comprises a g.hn signal input module, a CATV filtering module, a g.hn filtering module, and a splitter module; the G.hn signal input module is connected with the separator module and used for filtering out high-frequency signals, the CATV filtering module is connected with the separator module and used for carrying out capacitance filtering processing on the CATV signals, the G.hn filtering module is connected with the separator module and used for carrying out capacitance filtering processing on the G.hn signals, and the separator module is used for dividing the received signals into two parts and outputting the two parts.

8. The two-in-one central office end equipment according to claim 7, wherein the g.hn signal input module comprises an isolation transformer T3, a TVS diode, an inductor L2, an inductor L3, an inductor L4, an inductor L5, an inductor L6, a capacitor C44, a capacitor C25, a capacitor C29, a capacitor C32, a capacitor C34, a capacitor C23, a capacitor C27, a capacitor C31, a capacitor C33 and a capacitor C35; the isolation transformer T3 comprises a first pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin and an eighth pin; a fifth pin, a sixth pin, a seventh pin, and an eighth pin of the isolation transformer T3 are connected to two pairs of g.hn data signals RX _ INP _ A, RX _ I NN _ a output by the g.hn protocol processing module, two ends of the TVS diode are connected to the first pin and the fourth pin of the isolation transformer T3, the fourth pin of the isolation transformer T3 is connected to two ends of an inductor L2, an inductor L3, an inductor L4, an inductor L5, an inductor L6, and a capacitor C44 in sequence, the capacitors C25, C29, and C29 are connected in parallel to two ends of the inductor L29, and the front ends of the inductor L29, the capacitors C29, and the capacitors C29 are connected to ground respectively.

9. The two-in-one office end equipment according to claim 8, wherein the splitter module comprises a splitter T4; the separator T4 comprises a first pin, a fourth pin and a sixth pin; the CATV filtering module comprises an inductor L13, an inductor L17, an inductor L14, an inductor L15, an inductor L16, a capacitor C200, a capacitor C202, a capacitor C204, a capacitor C203, a capacitor C209, a capacitor C201, a capacitor C206, a capacitor C205, a capacitor C208 and a capacitor C207; a fourth pin of the splitter T4 is connected to the capacitor C44, a sixth pin of the splitter T4 is sequentially connected to the inductor L13, the inductor L17, the inductor L14, the inductor L15, the inductor L16, and the capacitor C200, the capacitor C202, the capacitor C204, the capacitor C203, and the capacitor C2029 are respectively connected in parallel to two ends of the inductor L13, the inductor L17, the inductor L14, and the inductor L15, and front ends of the inductor L13, the inductor L17, the inductor L14, and the inductor L15 are respectively connected to ground, where the capacitor C201, the capacitor C206, the capacitor C205, the capacitor C208, and the capacitor C207 are connected to front ends of the inductor L3534, the inductor L14.

10. The two-in-one office end device according to claim 9, wherein the g.hn filter module comprises a capacitor C469, an inductor L52, an inductor L53, an inductor L54, a capacitor C486, an inductor L55, a resistor R491, a capacitor C472, an inductor L56, a capacitor C473, an inductor L57, a capacitor C474, a resistor R489 and a capacitor C457; the first pin of the separator T4 is connected with the capacitor C469, the inductor L52, the inductor L53, the inductor L54 and the capacitor C486 in sequence, the access point of the capacitor C469 is connected with the inductor L55 and the resistor R491 in a point-to-ground manner, the access point of the inductor L52 is connected with the capacitor C472 in a point-to-ground manner, the access point of the inductor L53 is connected with the inductor L56 and the capacitor C473 in a point-to-ground manner, the access point of the inductor L54 is connected with the inductor L57 and the capacitor C474 in a point-to-ground manner, and the access point of the capacitor 486 is connected with the resistor R489.

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