High-expansion FTTR whole-house optical fiber access system

Abstract

The invention relates to an optical fiber communication technology, discloses a high-expansion FTTR whole-house optical fiber access system, and solves the problems of weak expansibility and high networking cost of the existing P2MP scheme. The access system comprises a main gateway device and a plurality of sub-network devices. At least one piece of sub-network equipment is deployed in each room; the sub-network equipment comprises sub-gateway equipment or an optical switch or an optical router; the main gateway device is connected with an external internet and a part of the sub-network devices through optical fibers. The other sub-network devices are connected with the main gateway device in a cascading mode, and the optical switch and the optical router serve as expansion devices to be connected into the upper-level sub-network device; and the main gateway device and each sub-network device are connected with a communication device of a user through a communication interface.

Description

Technical Field

[0001] The present invention relates to optical fiber communication technology, and in particular to a high-expansion FTTR (Fiber to The Room) whole-house optical fiber access system. Background Art

[0002] The FTTR gateway devices currently used by operators are all based on the P2MP (Point 2Multiple Point, point-to-multipoint master station) model, which simulates the interaction between the backbone network OLT and ONU in the home local area network, that is, the main gateway and the sub-gateway, to meet a certain degree of fiber coverage in the whole house. However, this OLT+ONU model also has certain defects, that is, the long-distance coverage of optical fiber must be based on the sub-gateway as a node, which greatly increases the number of network devices and the cost of optical fiber coverage, and its home network scalability is weak. Summary of the invention

[0003] The technical problem to be solved by the present invention is to propose a highly scalable FTTR whole-house optical fiber access system to solve the problems of weak scalability and high networking cost of the current P2MP solution.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A highly expandable FTTR whole-house optical fiber access system, comprising: a main gateway device and multiple sub-network devices; at least one of the sub-network devices is deployed in each room; the sub-network devices include sub-gateway devices or optical switches or optical routers;

[0006] The main gateway device is connected to the external Internet and some sub-network devices through optical fibers respectively; the remaining sub-network devices are connected to the main gateway device in a cascade manner, wherein optical switches and optical routers are connected to the upper-level sub-network devices as expansion devices; the main gateway device and each sub-network device are connected to the user's communication device through a communication interface.

[0007] Further, the main gateway device includes an external communication module and an internal communication module, and the external communication module is connected to the internal communication module;

[0008] The external communication module is used to access the external Internet, and includes: a first interface and a BOSA drive unit connected to the first interface;

[0009] The internal communication module is used to communicate with the sub-network devices and allocate bandwidth to each sub-network device, and includes: a second interface and a BOSA driving unit connected to the second interface, a third interface and an SFP optical module connected to the third interface.

[0010] Furthermore, the sub-gateway device includes a fourth interface, a fifth interface and an SFP optical module connected to the fifth interface, and the fourth interface is connected to the BOSA drive unit of the main gateway device connected to the second interface through optical fiber; the SFP optical module connected to the fifth interface is used to connect to the next-level optical switch or optical router.

[0011] Further, the optical switch and the optical router both include: a sixth interface and an SFP optical module connected to the sixth interface, a seventh interface and an SFP optical module connected to the seventh interface;

[0012] The optical switch or optical router accesses the SFP optical module connected to the third interface of the main gateway device through the SFP optical module connected to the sixth interface; or, the optical switch or optical router accesses the upper-level sub-network device through the SFP optical module connected to the sixth interface.

[0013] Furthermore, the communication interface includes at least one of WiFi, a fiber optic interface and a network cable interface.

[0014] Furthermore, the optical fiber includes at least one of a multimode optical fiber and a single-mode optical fiber.

[0015] Furthermore, the SFP optical module includes a 2.5G optical module or a downward compatible optical module, and is networked based on 2500Base-X.

[0016] Furthermore, the third interface, the fifth interface, the sixth interface and the seventh interface adopt a serial interface, and the serial interface includes a HiSGMII (Hi-speed Serial Gigabit Media Independent Interface) interface or a SGMII (Serial Gigabit Media Independent Interface) interface.

[0017] Furthermore, the communication device includes but is not limited to a mobile phone, a computer or a television.

[0018] Furthermore, the system uses Ethernet protocol for communication.

[0019] The beneficial effects of the present invention are:

[0020] Based on the access system provided by the present invention, the optical fiber coverage mode of the FTTR gateway product under the P2MP model is expanded, the main gateway is connected to the external Internet through optical fiber, the sub-network equipment is connected to the main gateway through optical fiber, and the optical fiber can be extended downward to connect the lower-level network equipment. The access system adopts the Ethernet protocol, realizing the full optical access of user equipment to the Internet, and can be directly transplanted to the existing P2MP equipment, which reduces the development cost and cycle while also making up for the problem that the sub-gateway must be used for the expansion of optical fiber networking under the P2MP model, greatly enhancing the scalability of the current FTTR solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of equipment connection of the FTTR whole-house optical fiber access system in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of FTTR whole-house optical fiber networking expanded by SFP routing in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the FTTR whole-house optical fiber network expanded by the SFP switch in an embodiment of the present invention;

[0024] Figure 4 A hardware structure diagram of a master gateway device in an embodiment of the present invention;

[0025] Figure 5 FIG. 4 is a hardware structure diagram of a sub-gateway device in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention aims to provide a highly expandable FTTR whole-house optical fiber access system to solve the problems of weak expandability and high networking cost of the current P2MP solution. The present invention is based on the P2MP model, and adds an optical module with an SFP interface. While retaining the ability of P2MP to interact with multiple sub-gateways, it realizes that multiple sub-gateways are connected to the main gateway by optical fiber, and the main gateway can also connect to other devices through optical fiber relying on the optical module. The access system provided by the present invention includes a main gateway device and multiple sub-network devices, wherein the sub-network devices include sub-gateway devices, optical switches or optical routers; the main gateway device is connected to the external Internet and some sub-network devices through optical fibers respectively; the remaining sub-network devices are connected to the main gateway device in a cascade manner, wherein the optical switches and optical routers can be used as expansion devices to access the upper-level sub-network devices; the main gateway device and each sub-network device are connected to the user's communication device through a communication interface. The access system adopts the Ethernet protocol to realize the user's communication device to access the external Internet through the highly expandable FTTR whole-house optical fiber access system, enhances the fiber coverage expandability of FTTR under the current P2MP model, reduces the cost of replacing equipment covered by optical fiber, and expands the fiber networking mode.

[0027] Example

[0028] This embodiment provides a highly scalable FTTR whole-house optical fiber access system. The access system uses the Ethernet protocol. Figure 1 , which includes a main gateway device and multiple sub-network devices; wherein the sub-network device includes a sub-gateway device or an optical switch or an optical router.

[0029] During deployment, at least one sub-network device is deployed in each room. The main gateway device is connected to the external Internet optical fiber, some sub-network devices are connected to the main gateway device optical fiber, and the remaining sub-network devices are connected to the main gateway device in a cascade manner. For example, "Optical Router 1" and "Optical Router 2" serve as secondary expansion devices of "Optical Switch 1", and "Optical Switch 2" and "Optical Router 3" serve as secondary expansion devices of "Sub-Gateway Device 1" and "Sub-Gateway Device 2" respectively.

[0030] The main gateway device allocates bandwidth to each sub-network device; the main network device and the sub-network device are connected to the user communication device through the communication interface, so that the user communication device can access the external Internet.

[0031] Among them, the main gateway device includes an external communication module and an internal communication module, and the external communication module is connected to the internal communication module; the external communication module is used to access the external Internet, and it includes: a first interface and a BOSA driver unit connected to the first interface; the internal communication module is used to communicate with the sub-network device and allocate bandwidth to each sub-network device, and it includes: a second interface and a BOSA driver unit connected to the second interface, a third interface and an SFP optical module connected to the third interface.

[0032] The sub-gateway device includes a fourth interface, a fifth interface and an SFP optical module connected to the fifth interface. The fourth interface is connected to the BOSA drive unit of the main gateway device connected to the second interface through an optical fiber; the SFP optical module connected to the fifth interface is used to connect to the optical switch or optical router of the next level.

[0033] The optical switch and the optical router both include: a sixth interface and an SFP optical module connected to the sixth interface, a seventh interface and an SFP optical module connected to the seventh interface; the optical switch or the optical router accesses the SFP optical module connected to the third interface of the main gateway device through the SFP optical module connected to the sixth interface; or, the optical switch or the optical router accesses the upper-level sub-network device through the SFP optical module connected to the sixth interface.

[0034] In the above system, the third interface, the fifth interface, the sixth interface and the seventh interface can be connected to use SFP optical modules for optical fiber connection communication, which expands the whole-house optical coverage method of traditional FTTR and greatly improves the scalability of FTTR. The interface used is a serial interface that can include a HiSGMII (Hi-speed Serial Gigabit Media Independent Interface) interface and an SGMII (Serial Gigabit Media Independent Interface) interface.

[0035] The user's communication devices include but are not limited to mobile phones, computers, televisions, etc.

[0036] In the specific implementation, Figure 1 Taking the device connection of the FTTR whole-house fiber optic access system shown in the figure as an example, the first interface of the main gateway device accesses the external Internet. Specifically, the driver unit composed of XGPON BOSA+ driver chip UX3361 is used to complete the interaction, and the communication with the main control chip ZX279133 is completed through I2C serdes, thereby realizing the conversion of optical signals to electrical signals and realizing the access of the main gateway device to the external Internet.

[0037] The 10G Serdes inside the ZX279133 connects to the mini olt ZX279201 chip to complete the connection from external communication to internal communication.

[0038] The ZX279201 chip is introduced by 10G Serdes, connected to the XMAC package reorganization, and then the second interface is led out from the internal PON SERDES interface. The second interface is connected to the BOSA driver unit composed of UX3326 and OLTbosa as the main equipment, and then the optical fiber is connected to the splitter and then connected to multiple sub-gateways to achieve optical fiber coverage.

[0039] The ZX279201 chip is introduced by 10Gserdes, connected to the XMAC package and reorganized, and then the third interface is led out by the internal Ethernet SERDES (2.5G) interface. After the third interface is connected to the SFP optical module, it can be connected to the SFP optical module that is compatible with the sixth interface of the optical switch through optical fiber, thereby expanding the fiber optic connection method.

[0040] The sixth interface of the optical switch's SFP optical module optical fiber connection is introduced into each control chip, and the SFP optical module extended by the seventh interface led out from the optical switch main control can be connected to the secondary sub-network device, thereby expanding the optical fiber coverage.

[0041] The fourth interface of the sub-gateway device is connected to the optical fiber separated by the optical splitter led out from the second interface of the main gateway. Its fifth interface Ethernet Serdes can be connected to the 2.5G (SFP) optical module or the XFP optical module optical fiber led out from XFI to connect the secondary sub-network device, thereby expanding the optical fiber coverage mode.

[0042] Users can connect to nodes at all levels wirelessly or by wire to connect to the external Internet.

[0043] Figure 4 The hardware structure diagram of the main gateway device is shown. The main gateway device uses the ZX279133 chip. The ZX279133 chip has 1 PON Serdes, 4 GE PHYs, 1 XFI (xfi / 5G / 2.5G / 1G), 1 RGMII, 2 USB3.0, DDR3 / 4 interfaces, as well as UART, SPI, I2C, MDIO, and GPIO. The first interface in the example is PON Serdes, and the first interface is connected to the upstream optical BOSA driver unit, thereby realizing the conversion of optical and electrical signals to achieve optical fiber connection with the external Internet.

[0044] The 10G serdes interface of the master control ZX279133 is connected to the ZX279201 or FPGA chip, and the PON Serdes inside the ZX279201 or FPGA chip is connected to the BOSA driver unit as the second interface, thereby realizing the conversion of optical and electrical signals, thereby realizing the optical fiber connection with the sub-network equipment.

[0045] The HISGMII / SGMII inside the ZX279201 or FPGA chip is used as the third interface to connect to the matching SFP optical module, thereby realizing the conversion of optical and electrical signals and achieving optical fiber connection with the lower-level equipment.

[0046] The PCIE interface of ZX279133 connects to the WiFi6 wireless network composed of MT7916AN and MT7976DN, allowing users to wirelessly connect to the external Internet. The GE RJ45 interface provided by GE PHY provides users with a wired connection to the external Internet.

[0047] Figure 5The schematic diagram of the hardware structure of the sub-gateway device is shown. The sub-gateway device also uses the ZX279133 chip as the main control. The PON Serdes is used as the fourth interface to connect the UX3320S as the optical drive device. The UX3320S drives the GPON BOSA to achieve photoelectric conversion. Serdes is used as the fifth interface to connect the SFP optical module to achieve photoelectric conversion. The PCIE interface of the ZX279133 is connected to the WiFi6 wireless network composed of MT7916AN and MT7976DN, so that users can achieve wireless connection to the external Internet. The GE RJ45 interface provided by GE PHY provides users with a wired connection to the external Internet.

[0048] In actual application scenarios, a typical SFP router-expanded FTTR whole-house fiber network and a typical SFP switch-expanded FTTR whole-house fiber network are implemented as follows: Figure 2 and Figure 3 As shown. Figure 2 In the example, "SFP router 1" is connected to the main gateway through optical fiber, and "SFP switch" is used as an expansion device to connect to "SFP router 1" through SFP optical module; Figure 3 In the example, the "SFP switch" is connected to the main gateway through optical fiber, and the "SFP router 1" is used as an expansion device to connect to the "SFP switch" through the SFP optical module.

[0049] Finally, it should be noted that the above embodiments are only preferred implementations and are not intended to limit the present invention. It should be pointed out that for those skilled in the art, several modifications, equivalent replacements, improvements, etc. can be made without departing from the scope of the present invention and the scope of protection of the claims, and all of these should be included in the protection scope of the present invention.

Claims

1. A highly expandable FTTR whole-house optical fiber access system, comprising: A main gateway device and multiple sub-network devices; characterized in that at least one of the sub-network devices is deployed in each room; the sub-network devices include sub-gateway devices or optical switches or optical routers; The main gateway device is connected to the external Internet and some sub-network devices through optical fibers respectively; the remaining sub-network devices are connected to the main gateway device in a cascade manner, wherein optical switches and optical routers are connected to the upper-level sub-network devices as expansion devices; the main gateway device and each sub-network device are connected to the user's communication device through a communication interface.

2. A high-expansion FTTR whole-house optical fiber access system as claimed in claim 1, characterized in that: The main gateway device includes an external communication module and an internal communication module, and the external communication module is connected to the internal communication module; The external communication module is used to access the external Internet, and includes: a first interface and a BOSA drive unit connected to the first interface; The internal communication module is used to communicate with the sub-network devices and allocate bandwidth to each sub-network device, and includes: a second interface and a BOSA driving unit connected to the second interface, a third interface and an SFP optical module connected to the third interface.

3. A high-expansion FTTR whole-house optical fiber access system as claimed in claim 2, characterized in that: The sub-gateway device includes a fourth interface, a fifth interface and an SFP optical module connected to the fifth interface, and the fourth interface is connected to the BOSA driver unit of the main gateway device connected to the second interface through an optical fiber; The SFP optical module connected to the fifth interface is used to connect to the optical switch or optical router of the next level.

4. A high-expansion FTTR whole-house optical fiber access system as claimed in claim 3, characterized in that: The optical switch and the optical router both include: a sixth interface and an SFP optical module connected to the sixth interface, A seventh interface and an SFP optical module connected to the seventh interface; The optical switch or optical router accesses the SFP optical module connected to the third interface of the main gateway device through the SFP optical module connected to the sixth interface; or, the optical switch or optical router accesses the upper-level sub-network device through the SFP optical module connected to the sixth interface.

5. A high-expansion FTTR whole-house optical fiber access system as claimed in claim 1, characterized in that: The communication interface includes at least one of WiFi, optical fiber interface and network cable interface.

6. A high-expansion FTTR whole-house optical fiber access system as claimed in claim 1, characterized in that: The optical fiber includes at least one of a multimode optical fiber and a single-mode optical fiber.

7. A high-expansion FTTR whole-house optical fiber access system as claimed in claim 1, characterized in that: The SFP optical module includes a 2.5G optical module or a downward compatible optical module, and is networked based on 2500Base-X.

8. A high-expansion FTTR whole-house optical fiber access system as claimed in claim 4, characterized in that: The third interface, the fifth interface, the sixth interface and the seventh interface adopt serial interfaces, and the serial interfaces include HiSGMII interfaces or SGMII interfaces.

9. A high-expansion FTTR whole-house optical fiber access system as described in any one of claims 1 to 8, characterized in that: The communication device includes a mobile phone, a computer or a television.

10. A high-expansion FTTR whole-house optical fiber access system according to any one of claims 1 to 8, characterized in that: The system uses Ethernet protocol for communication.

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