Optical transmission system and method based on optical line route switching

Abstract

The invention relates to the technical field of optical fiber communication, in particular to an optical transmission system and method based on optical line route switching, and the system comprises an STM-1 / 4 / 16 optical transmission module, an STM-64 optical transmission module and an optical line route switching module. According to the invention, the same optical transmission interface can be flexibly set to be a synchronous digital system optical port rate in a full range of STM-1, STM-4, STM-16 and STM-64 according to user requirements, and standardized and modularized design is realized. When a user accesses a backbone network synchronous digital system, the device provided by the invention can be adopted to realize access in a full-rate range, and different-rate optical interface access of various types of equipment is not needed, so that the use of the user is greatly facilitated, the universality and the convenience of the equipment are improved, and the use cost and the complexity of the equipment are reduced. Therefore, the problem that the existing SDH optical fiber communication equipment cannot complete proper switching and matching according to the optical port rate of the backbone SDH optical fiber transmission system is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber communications, and in particular to an optical transmission system and method based on optical line routing switching. Background Art

[0002] Synchronous Digital Hierarchy (SDH) optical fiber communication equipment is widely used in the field of digital communications, and has mature applications from backbone networks, metropolitan area networks to access networks.

[0003] However, conventional SDH fiber-optic communication equipment has significant drawbacks: a single optical port is typically fixed to a specific transmission rate, or supports switching between only one or two rates. When connecting to other backbone SDH fiber-optic transmission systems, the equipment must know the transmission rate of the other optical interface and connect to a pre-configured optical interface that matches the other end's rate to establish communication. If the peer interface's rate changes, traditional SDH fiber-optic equipment must promptly replace the optical port. If the equipment itself lacks an optical interface with the corresponding rate, multiple devices or boards may be required to achieve communication with the other backbone SDH fiber-optic transmission system, creating significant inconvenience and increasing costs. Summary of the Invention

[0004] The present invention aims to provide an optical transmission system and method based on optical line routing switching, aiming to solve the problem that existing SDH optical fiber communication equipment cannot complete appropriate switching matching according to the optical port rate of the backbone SDH optical fiber transmission system.

[0005] To achieve the above-mentioned object, in a first aspect, the present invention provides an optical transmission system based on optical line routing switching, comprising an STM-1 / 4 / 16 optical transmission module, an STM-64 optical transmission module and an optical line routing switching module;

[0006] The STM-1 / 4 / 16 optical transmission module is used to convert Ethernet services into data in three rate frame formats: STM-1, STM-4, and STM-16 according to user needs;

[0007] The STM-64 optical transmission module is used to convert Ethernet services into data in STM-64 rate frame format;

[0008] The optical line routing switching module is used to select data of corresponding rate and complete the external connection of optical interface after passing through the photoelectric conversion module.

[0009] The STM-1 / 4 / 16 optical transmission module includes an Ethernet PHY chip, a K7 series logic chip, a CPU processor chip, an STM-1 / 4 / 16 SDH optical interface framing / deframing chip, an optical line routing switching unit, and a 155M-10G adaptive photoelectric conversion unit.

[0010] The Ethernet PHY chip 1 is used for Ethernet service data forwarding and interface type conversion of synchronous digital hierarchy SDH equipment, completing the conversion between GMII data format and physical layer electrical port 10 / 100 / 1000Mbit / s data format;

[0011] The K7 series logic chip 1 is used to complete the mapping / demapping function of Ethernet data;

[0012] The CPU processor chip 1 is used to communicate with the K7 series logic chip 1 and the optical line routing switching unit 1 to control and manage the optical line routing switching and the notification of the optical line routing status;

[0013] The STM-1 / 4 / 16 SDH optical interface framing / deframing chip is used to convert ESSI data frames into data in three rate frame formats: STM-1, STM-4, and STM-16, to implement the STM-1 / 4 / 16 SDH optical interface framing / deframing function;

[0014] The optical line routing switching unit 1 is used to realize optical path routing selection of Ethernet data transmitted through STM-1, STM-4 and STM-16;

[0015] The 155M-10G adaptive optoelectronic conversion unit 1 is used to convert electrical signals into optical signals, and vice versa, to achieve full-range (155M-10G) optical signal adaptation from STM-1, STM-4, STM-16, and STM-64.

[0016] The STM-64 optical transmission unit includes two Ethernet PHY chips, two K7 series logic chips, two CPU processor chips, two STM-64 SDH optical interface framing / deframing chips, CDR chips, two optical line routing switching units and two 155M-10G adaptive photoelectric conversion units.

[0017] The Ethernet PHY chip 2 is used for Ethernet service data forwarding and interface type conversion of synchronous digital hierarchy SDH equipment, completing the conversion between GMII data format and physical layer electrical port 10 / 100 / 1000Mbit / s data format;

[0018] The K7 series logic chip 2 is used to complete the mapping / demapping function of Ethernet data;

[0019] The CPU processor chip 2 is used to communicate with the K7 series logic chip 2 and the optical line routing switching unit 2 to control and manage the optical line routing switching and the notification of the optical line routing status;

[0020] The STM-64SDH optical interface framing / deframing chip is used to convert ESSI data frames into data in STM-64 rate frame format, thereby realizing the framing / deframing function of the STM-64 SDH optical interface;

[0021] The CDR chip is used to recover the 155Mhz line clock and 16-channel 622Mbit / s LVDS data from the 10G STM-64 electrical signal, and connect to the data and clock interfaces of the STM-64 SDH optical interface framing / deframing chip;

[0022] The optical line routing switching unit 2 is used to realize optical path routing selection for Ethernet data transmitted via STM-64;

[0023] The 155M-10G adaptive optoelectronic conversion unit 2 is used to convert electrical signals into optical signals, and vice versa, to achieve the adaptation of the full range (155M-10G) optical signals from STM-1, STM-4, STM-16, and STM-64.

[0024] In a second aspect, an optical transmission method based on optical line routing switching is used in the optical transmission system based on optical line routing switching according to the first aspect, comprising the following steps:

[0025] The STM-1 / 4 / 16 optical transmission module converts Ethernet services into data in three frame formats: STM-1, STM-4, and STM-16. The optical line routing switch module selects the data at the corresponding rate and connects it to the optical interface after passing through the optoelectronic conversion module.

[0026] The STM-64 optical transmission module converts Ethernet services into data in the STM-64 rate frame format. The optical line routing switching module selects data of the corresponding rate and completes the external connection of the optical interface after passing through the optoelectronic conversion module.

[0027] The following steps are included in the process of "the STM-1 / 4 / 16 optical transmission module converts Ethernet services into data in three frame formats: STM-1, STM-4, and STM-16 according to user requirements; the optical line routing switching module selects data at the corresponding rate; and the optical interface is connected after passing through the optoelectronic conversion module":

[0028] Ethernet PHY chip 1 converts the received Ethernet electrical interface data into MAC layer data in GMII format and interconnects with K7 series logic chip 1, which completes data mapping / demapping.

[0029] After selecting the STM-1, STM-4, or STM-16 optical port rate according to user requirements, the CPU processor 1 transmits the selected rate information to the optical line routing switch unit 1 and the K7 series logic chip 1 through the communication interface;

[0030] The data is framed / deframed according to the selected optical port rate of STM-1, STM-4, or STM-16, and transmitted after optical-electrical conversion is completed through the 155M-10G adaptive optical-electrical conversion unit.

[0031] The following steps are included in the process of "the STM-64 optical transmission module converts Ethernet services into data in an STM-64 rate frame format, the optical line routing switching module selects data of corresponding rate, and the optical interface is connected after passing through the photoelectric conversion module":

[0032] The Ethernet PHY chip 2 converts Ethernet electrical interface data into MAC layer data in GMII format and interconnects with the K7 series logic chip 2; the K7 series logic chip 2 performs the mapping / demapping function of Ethernet data;

[0033] The STM-64 optical port rate is selected based on the user's needs and intentions, and the CPU processor 2 transmits the rate to the optical line routing switch unit 2 and the K7 series logic chip 2 through the communication interface;

[0034] The data framing / deframing functions are completed according to the selected STM-64 optical port rate, and the CDR completes the serial-to-parallel conversion and clock extraction functions of the STM-64 data. The optical-to-electrical conversion is completed and then transmitted through the 155M-10G adaptive optical-to-electrical conversion unit 2.

[0035] The present invention provides an optical transmission system based on optical line routing switching, comprising an STM-1 / 4 / 16 optical transmission module, an STM-64 optical transmission module, and an optical line routing switching module. The STM-1 / 4 / 16 optical transmission module is used to convert Ethernet services into data in three rate frame formats: STM-1, STM-4, and STM-16, according to user requirements; the STM-64 optical transmission module is used to convert Ethernet services into data in an STM-64 rate frame format; and the optical line routing switching module is used to select data of corresponding rates and, after passing through a photoelectric conversion module, to connect an optical interface. The present invention enables the same optical transmission interface to be flexibly set to the full range of Synchronous Digital System optical port rates of STM-1, STM-4, STM-16, and STM-64, according to user requirements, achieving a standardized and modular design. When users access the backbone network Synchronous Digital System, they can use the device of the present invention to achieve access within the full range of rates, eliminating the need to use optical interfaces of different device models with different rates. This greatly facilitates user use, improves the versatility and convenience of the device, and reduces the cost and complexity of device use. This solves the problem that the existing SDH optical fiber communication equipment cannot complete appropriate switching matching according to the optical port rate of the backbone SDH optical fiber transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 It is a structural schematic diagram of an optical transmission system based on optical line routing switching provided by the present invention.

[0038] Figure 2 This is a structural diagram of the STM-64 optical transmission module.

[0039] Figure 3 It is a structural diagram of the optical line routing switching module.

[0040] Figure 4 This is a flow chart of an optical transmission method based on optical line routing switching provided by the present invention.

[0041] Figure 5 This is a flowchart of how the STM-1 / 4 / 16 optical transmission module converts Ethernet services into data in STM-1, STM-4, and STM-16 rate frame formats according to user requirements. The optical line routing switching module selects the data at the corresponding rate, and the optical interface is connected after passing through the optoelectronic conversion module.

[0042] Figure 6 This is a flowchart in which the STM-64 optical transmission module converts Ethernet services into data in the STM-64 rate frame format, the optical line routing switch module selects data of the corresponding rate, and the optical interface is connected after passing through the optoelectronic conversion module.

[0043] In the figure: 1-STM-1 / 4 / 16 optical transmission module, 2-STM-64 optical transmission module, 3-Optical line routing switch module, 11-Ethernet PHY chip 1, 12-K7 series logic chip 1, 13-CPU processor chip 1, 14-STM-1 / 4 / 16SDH optical interface framing / deframing chip, 15-Optical line routing switch unit 1, 16-155M-10G adaptive photoelectric conversion unit 1, 21-Ethernet PHY chip 2, 22-K7 series logic chip 2, 23-CPU processor chip 2, 24-STM-64SDH optical interface framing / deframing chip, 25-CDR chip, 26-Optical line routing switch unit 2, 27-155M-10G adaptive photoelectric conversion unit 2. DETAILED DESCRIPTION

[0044] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0045] See also Figures 1 to 3 In a first aspect, the present invention provides an optical transmission system based on optical line routing switching, comprising an STM-1 / 4 / 16 optical transmission module 1, an STM-64 optical transmission module 2 and an optical line routing switching module 3;

[0046] The STM-1 / 4 / 16 optical transmission module 1 is used to convert Ethernet services into data in STM-1, STM-4, and STM-16 rate frame formats according to user needs;

[0047] The STM-64 optical transmission module 2 is used to convert Ethernet services into data in STM-64 rate frame format;

[0048] The optical line routing switching module 3 is used to select data of corresponding rate and complete the external connection of optical interface after passing through the photoelectric conversion module.

[0049] In this embodiment, the STM-1 / 4 / 16 optical transmission module 1 is used to convert Ethernet services into data in STM-1, STM-4, and STM-16 rate frame formats according to user needs; the STM-64 optical transmission module 2 is used to convert Ethernet services into data in STM-64 rate frame formats; and the optical line routing switching module 3 is used to select data at the corresponding rate and, after passing through the optoelectronic conversion module, to connect the optical interface. This invention enables the same optical transmission interface to be flexibly configured to the full range of Synchronous Digital Hierarchy optical port rates (STM-1, STM-4, STM-16, and STM-64) according to user needs, achieving a standardized and modular design. When users access the backbone Synchronous Digital Hierarchy, they can use the device of this invention to achieve access within the full range of rates, eliminating the need to use optical interfaces of different device models with different rates. This greatly facilitates user use, improves the versatility and convenience of the device, and reduces the cost and complexity of device use. This solves the problem of existing SDH fiber optic communication equipment being unable to properly switch and match the optical port rates of the backbone SDH fiber optic transmission system.

[0050] Furthermore, the STM-1 / 4 / 16 optical transmission module 1 includes an Ethernet PHY chip 11, a K7 series logic chip 12, a CPU processor chip 13, an STM-1 / 4 / 16 SDH optical interface framing / deframing chip 14, an optical line routing switching unit 15 and a 155M-10G adaptive photoelectric conversion unit 16;

[0051] The Ethernet PHY chip 11 is used for Ethernet service data forwarding and interface type conversion of synchronous digital hierarchy SDH equipment, completing the conversion between GMII data format and physical layer electrical port 10 / 100 / 1000Mbit / s data format;

[0052] The K7 series logic chip 12 is used to complete the mapping / demapping function of Ethernet data;

[0053] The CPU processor chip 13 is used to communicate with the K7 series logic chip 12 and the optical line routing switching unit 15 to control and manage the optical line routing switching and the notification of the optical line routing status;

[0054] The STM-1 / 4 / 16 SDH optical interface framing / deframing chip 14 is used to convert ESSI data frames into data in three rate frame formats: STM-1, STM-4, and STM-16, to implement the STM-1 / 4 / 16 SDH optical interface framing / deframing function;

[0055] The optical line routing switching unit 15 is used to realize the optical path routing selection of Ethernet data transmitted through STM-1, STM-4, and STM-16;

[0056] The 155M-10G adaptive optoelectronic conversion unit 16 is used to convert electrical signals into optical signals, and vice versa, to achieve full range (155M-10G) optical signal adaptation from STM-1, STM-4, STM-16, and STM-64.

[0057] In this embodiment, it is composed of an Ethernet PHY chip 11, a K7 series logic chip 12, a CPU processor chip 13, an STM-1 / 4 / 16SDH optical interface framing / deframing chip 14, an optical line routing switching unit 15, and a 155M-10G adaptive photoelectric conversion module.

[0058] The Ethernet PHY chip 11 is connected to the K7 series logic chip 12;

[0059] The CPU processor chip 13 is connected to the K7 series logic chip 12;

[0060] The STM-1 / 4 / 16SDH optical interface framing / deframing chip 14 is connected to the K7 series logic chip 12;

[0061] The optical line routing switching unit 15 is connected to the STM-1 / 4 / 16SDH optical interface framing / deframing chip 14;

[0062] The 155M-10G adaptive photoelectric conversion unit 16 is connected to the optical line routing switching unit 15.

[0063] The Ethernet PHY chip 11 is connected to the K7 series logic chip 12 via the GMII Ethernet MAC layer signal interface; the GMII signal interface is a MAC layer Ethernet interface that can carry SDH Ethernet service data frames; the Ethernet PHY chip 11 uses models including but not limited to 88E1111 chips, which support the conversion of Ethernet electrical interfaces into data formats such as GMII, SGMII, and 1000BASE-X. In this design, the electrical interface is converted into GMII for forwarding Ethernet service data of synchronous digital system SDH equipment.

[0064] The K7 series logic chip 12 is connected to the STM-1 / 4 / 16 SDH optical interface framing / deframing chip 14 via an ESSI data interface. The ESSI data interface is an SDH enhanced synchronous serial interface. The ESSI high-speed interface used in this design has a rate of 2488.42 Mbit / s, completing the interconnection between the K7 series logic chip 12 and the STM-1 / 4 / 16 SDH optical interface framing / deframing chip 14. The K7 series logic chip 12 includes, but is not limited to, the SMQ7K325TFFG900IP chip, which is used to perform Ethernet data mapping / demapping functions, ESSI interface data framing / deframing functions, and Ethernet data path selection, selecting Ethernet transmission via STM-1, STM-4, STM-16, or STM-64 based on the optical port rate reported by the CPU processor chip 13.

[0065] The CPU processor chip 13 is connected to the K7 series logic chip 12 and the optical line routing switch unit 15 via an SPI data interface and an I2C data interface to transmit rate control processing data. In this design, the CPU processor chip 13 and the K7 series logic chip 12 use the SPI data frame format, while the CPU processor chip 13 and the optical line routing switch unit 15 use the I2C data frame format to transmit rate control processing data. The CPU processor chip 13 can be selected from models including but not limited to the Loongson 2K1000-I chip, which is used to communicate with the optical line routing switch unit 15 to control and manage optical line routing switching. It also communicates with the K7 series logic chip 12 to notify the optical line routing status.

[0066] The STM-1 / 4 / 16 SDH optical interface framing / deframing chip 14 includes, but is not limited to, the PM5336B-FEI chip, which supports SDH network interfaces and framing / deframing functions, as well as cross-connection, pointer adjustment, and externally extended ESSI and PTB interface functions. In this design, it converts ESSI data frames into data in STM-1, STM-4, and STM-16 rate frame formats, implementing STM-1 / 4 / 16 SDH optical interface framing / deframing, cross-connection, pointer adjustment, and other functions.

[0067] The optical line routing switching unit 15 adopts a high-speed driver 2-to-1 chip. The models selected by the optical line routing switching unit 15 include but are not limited to the SN65LVCP114ZJA chip, which has a maximum high-speed serial data driving capability of 14.2Gbps, supports 2-to-1 channel routing selection function, and provides an I2C control interface. In this design, optical path routing selection of Ethernet data is realized through STM-1, STM-4, and STM-16 transmission.

[0068] The 155M-10G adaptive photoelectric conversion unit 16 is used to convert electrical signals into optical signals;

[0069] The 155M-10G adaptive photoelectric conversion unit 16 is also used to convert the optical signal into an electrical signal;

[0070] The 155M-10G adaptive optoelectronic conversion unit 16 is also used to achieve the adaptation of the full range (155M-10G) optical signals from STM-1, STM-4, STM-16, and STM-64.

[0071] Furthermore, the STM-64 optical transmission unit includes an Ethernet PHY chip 21, a K7 series logic chip 22, a CPU processor chip 23, an STM-64 SDH optical interface framing / deframing chip 24, a CDR chip 25, an optical line routing switching unit 26 and a 155M-10G adaptive photoelectric conversion unit 27;

[0072] The Ethernet PHY chip 21 is used for Ethernet service data forwarding and interface type conversion of synchronous digital hierarchy SDH equipment, completing the conversion between GMII data format and physical layer electrical port 10 / 100 / 1000Mbit / s data format;

[0073] The K7 series logic chip 22 is used to complete the mapping / demapping function of Ethernet data;

[0074] The CPU processor chip 23 is used to communicate with the K7 series logic chip 22 and the optical line routing switching unit 26 to control and manage the optical line routing switching and the notification of the optical line routing status;

[0075] The STM-64SDH optical interface framing / deframing chip 24 is used to convert the ESSI data frame into data in the STM-64 rate frame format, thereby realizing the STM-64 SDH optical interface framing / deframing function;

[0076] The CDR chip 25 is used to recover the 155Mhz line clock and 16-channel 622Mbit / s LVDS data from the 10G STM-64 electrical signal, and connect to the data and clock interfaces of the STM-64SDH optical interface framing / deframing chip 24;

[0077] The optical line routing switching unit 26 is used to realize optical path routing selection of Ethernet data transmitted via STM-64;

[0078] The 155M-10G adaptive optoelectronic conversion unit 27 is used to convert electrical signals into optical signals, and vice versa, to achieve full range (155M-10G) optical signal adaptation from STM-1, STM-4, STM-16, and STM-64.

[0079] In this embodiment, the Ethernet PHY chip 21 is connected to the K7 series logic chip 22;

[0080] The CPU processor chip 23 is connected to the K7 series logic chip 22;

[0081] The STM-64SDH optical interface framing / deframing chip 24 is connected to the K7 series logic chip 22;

[0082] The CDR chip 25 is connected to the STM-64SDH optical interface framing / deframing chip 24;

[0083] The optical line routing switching unit 26 is connected to the CDR chip 25;

[0084] The second 155M-10G adaptive photoelectric conversion unit 27 is connected to the second optical line routing switching unit 26 .

[0085] The Ethernet PHY chip 21 is connected to the K7 series logic chip 22 through the GMII Ethernet MAC layer signal interface; the GMII signal interface is a MAC layer Ethernet interface that can carry SDH Ethernet service data frames; the Ethernet PHY chip 2 21 uses models including but not limited to 88E1111 chips, which support the conversion of Ethernet electrical interfaces into GMII, SGMII, 1000BASE-X and other data formats. In this design, the electrical interface is converted into GMII for forwarding Ethernet service data of synchronous digital system SDH equipment.

[0086] The K7 series logic chip 22 is connected to the STM-64 SDH optical interface framing / deframing chip via an ESSI data interface. The ESSI data interface is an SDH enhanced synchronous serial interface. The ESSI high-speed interface rate used in this design is 2488.42 Mbit / s, completing the interconnection between the K7 series logic chip 22 and the STM-1 / 4 / 16 SDH optical interface framing / deframing chip 14. The K7 series logic chip 22 includes, but is not limited to, the SMQ7K325TFFG900IP chip, which is used to perform Ethernet data mapping / demapping functions, ESSI interface data framing / deframing functions, VC-level cross-connection and pointer adjustment functions for Ethernet data, and Ethernet data path selection, selecting Ethernet transmission via STM-1, STM-4, STM-16, or STM-64 based on the optical port rate reported by the CPU processor chip 23.

[0087] The CPU processor chip 23 is connected to the K7 series logic chip 22 and the optical line routing switch unit 26 via an SPI data interface and an I2C data interface to transmit rate control processing data. In this design, the CPU processor chip 23 and the K7 series logic chip 22 use the SPI data frame format, while the CPU processor chip 23 and the optical line routing switch unit 26 use the I2C data frame format to transmit rate control processing data. The CPU processor chip 23 can be selected from models including but not limited to the Loongson2K1000-I chip, which is used to communicate with the optical line routing switch unit 26 to control and manage optical line routing switching; it also communicates with the K7 series logic chip 22 to notify the optical line routing status.

[0088] The STM-64 SDH optical interface framing / deframing chip includes, but is not limited to, the PM5326-FI chip, which supports two 10G SDH network interfaces, framing / deframing functions, and externally extended ESSI and PTB interfaces. This chip converts ESSI data frames into STM-64 rate frame format data, implementing the STM-64 SDH optical interface framing / deframing functions.

[0089] The CDR chip 25 may include, but is not limited to, an S19250PRID chip, which is used to recover a 155 MHz line clock and 16 channels of 622 Mbit / s LVDS data from a 10G STM-64 electrical signal, and connect to the data and clock interfaces of the STM-64 SDH optical interface framing / deframing chip.

[0090] The optical line routing switching unit 26 adopts a high-speed driver 2-to-1 chip. The models selected by the optical line routing switching unit 26 include but are not limited to the SN65LVCP114ZJA chip, which has a maximum high-speed serial data driving capability of 14.2Gbps, supports 2-to-1 channel routing selection function, and provides an I2C control interface to communicate with the CPU chip. In this design, optical path routing selection of Ethernet data is realized through STM-64 transmission.

[0091] The 155M-10G adaptive photoelectric conversion unit 27 is used to convert electrical signals into optical signals;

[0092] The 155M-10G adaptive photoelectric conversion unit 27 is also used to convert the optical signal into an electrical signal;

[0093] The 155M-10G adaptive optoelectronic conversion unit 27 is also used to achieve the adaptation of the full range (155M-10G) optical signals from STM-1, STM-4, STM-16, and STM-64.

[0094] See also Figures 4 to 6 In a second aspect, an optical transmission method based on optical line routing switching is used in the optical transmission system based on optical line routing switching according to the first aspect, comprising the following steps:

[0095] S1: The STM-1 / 4 / 16 optical transmission module 1 converts Ethernet services into data in STM-1, STM-4, and STM-16 frame formats according to user needs. The optical line routing switch module 3 selects the data at the corresponding rate and completes the optical interface external connection after passing through the optoelectronic conversion module.

[0096] The S11 Ethernet PHY chip converts the received Ethernet electrical interface data into GMII format MAC layer data and interconnects with the K7 series logic chip 12, which completes the data mapping / demapping.

[0097] Specifically, the Ethernet PHY chip 11 converts Ethernet electrical interface (10 / 100 / 1000Mbps) data into MAC layer data in GMII format and interconnects with the K7 series logic chip 12; the K7 series logic chip 12 completes the mapping / demapping function of Ethernet data.

[0098] After S12 selects the STM-1, STM-4, and STM-16 optical port rates according to user requirements, the CPU processor 1 transmits the selected rate information to the optical line routing switching unit 15 and the K7 series logic chip 12 through the communication interface;

[0099] Specifically, the Ethernet data transmission routing channel selection selects an optical port rate among STM-1, STM-4, and STM-16 according to user needs and intentions. The CPU processor transmits the rate to the optical line routing switching unit 15 and the K7 series logic chip 12 through the communication interface, and transmits it according to the frame format of the ESSI bus.

[0100] S13 completes the data framing / deframing function according to the selected optical port rate of STM-1, STM-4, and STM-16, and transmits it after completing the optical-electrical conversion through the 155M-10G adaptive optical-electrical conversion unit-16.

[0101] Specifically, the data framing / deframing function is completed according to the selected optical port rate of STM-1, STM-4, and STM-16, and the optical-electrical conversion is completed through the 155M-10G adaptive optical unit before transmission.

[0102] S2: The STM-64 optical transmission module 2 converts Ethernet services into data in the STM-64 rate frame format. The optical line routing switching module 3 selects the data at the corresponding rate and completes the optical interface external connection after passing through the optoelectronic conversion module.

[0103] The S21 Ethernet PHY chip 21 converts Ethernet electrical interface data into MAC layer data in GMII format and interconnects with the K7 series logic chip 22; the K7 series logic chip 22 completes the mapping / demapping function of Ethernet data;

[0104] Specifically, the Ethernet PHY chip 21 converts Ethernet electrical interface (10 / 100 / 1000Mbps) data into MAC layer data in GMII format and interconnects with the K7 series logic chip 22; the K7 series logic chip 22 completes the mapping / demapping function of Ethernet data.

[0105] S22 selects the STM-64 optical port rate according to the user's needs and intentions, and the CPU processor 2 transmits the rate to the optical line routing switch unit 2 26 and the K7 series logic chip 2 22 through the communication interface;

[0106] Specifically, the Ethernet data transmission routing channel selection selects the STM-64 optical port rate according to user needs and intentions. The CPU processor 2 transmits the rate to the optical line routing switching unit 26 and the K7 series logic chip 22 through the communication interface, and transmits it according to the frame format in the ESSI bus.

[0107] S23 completes the data framing / deframing function according to the selected STM-64 optical port rate, and the CDR completes the serial-to-parallel conversion and clock extraction functions of the STM-64 data, and transmits it after completing the optical-to-electrical conversion through the 155M-10G adaptive optical-to-electrical conversion unit 27.

[0108] Specifically, the data framing / deframing function is completed according to the selected STM-64 optical port rate, and the optical-electrical conversion is completed and then transmitted through the 155M-10G adaptive optical unit 2.

[0109] The above disclosure is merely a preferred embodiment of an optical transmission system and method based on optical line routing switching of the present invention. It is certainly not intended to limit the scope of the rights of the present invention. A person skilled in the art will understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention still fall within the scope of the invention.

Claims

1. An optical transmission system based on optical line routing switching, characterized in that: include Including STM-1 / 4 / 16 optical transmission module, STM-64 optical transmission module and optical line routing switching module; The STM-1 / 4 / 16 optical transmission module is used to convert Ethernet services into data in STM-1, STM-4, and STM-16 rate frame formats according to user needs; The STM-64 optical transmission module is used to convert Ethernet services into data in STM-64 rate frame format; The optical line routing switching module is used to select data of corresponding rate and complete the external connection of optical interface after passing through the photoelectric conversion module.

2. The optical transmission system based on optical line routing switching according to claim 1, characterized in that: The STM-1 / 4 / 16 optical transmission module includes an Ethernet PHY chip, a K7 series logic chip, a CPU processor chip, an STM-1 / 4 / 16 SDH optical interface framing / deframing chip, an optical line routing switching unit, and a 155M-10G adaptive photoelectric conversion unit. The Ethernet PHY chip 1 is used for Ethernet service data forwarding and interface type conversion of synchronous digital hierarchy SDH equipment, completing the conversion between GMII data format and physical layer electrical port 10 / 100 / 1000Mbit / s data format; The K7 series logic chip 1 is used to complete the mapping / demapping function of Ethernet data; The CPU processor chip 1 is used to communicate with the K7 series logic chip 1 and the optical line routing switching unit 1 to control and manage the optical line routing switching and the notification of the optical line routing status; The STM-1 / 4 / 16 SDH optical interface framing / deframing chip is used to convert ESSI data frames into data in three rate frame formats: STM-1, STM-4, and STM-16, to implement the STM-1 / 4 / 16 SDH optical interface framing / deframing function; The optical line routing switching unit 1 is used to realize optical path routing selection of Ethernet data transmitted through STM-1, STM-4 and STM-16; The 155M-10G adaptive optoelectronic conversion unit 1 is used to convert electrical signals into optical signals, and vice versa, to achieve full-range (155M-10G) optical signal adaptation from STM-1, STM-4, STM-16, and STM-64.

3. The optical transmission system based on optical line routing switching according to claim 1, wherein: The STM-64 optical transmission unit includes two Ethernet PHY chips, two K7 series logic chips, two CPU processor chips, two STM-64 SDH optical interface framing / deframing chips, CDR chips, two optical line routing switching units and two 155M-10G adaptive photoelectric conversion units; The Ethernet PHY chip 2 is used for Ethernet service data forwarding and interface type conversion of synchronous digital hierarchy SDH equipment, completing the conversion between GMII data format and physical layer electrical port 10 / 100 / 1000Mbit / s data format; The K7 series logic chip 2 is used to complete the mapping / demapping function of Ethernet data; The CPU processor chip 2 is used to communicate with the K7 series logic chip 2 and the optical line routing switching unit 2 to control and manage the optical line routing switching and the notification of the optical line routing status; The STM-64SDH optical interface framing / deframing chip is used to convert ESSI data frames into data in STM-64 rate frame format, thereby realizing the framing / deframing function of the STM-64 SDH optical interface; The CDR chip is used to recover the 155Mhz line clock and 16-channel 622Mbit / s LVDS data from the 10G STM-64 electrical signal, and connect to the data and clock interfaces of the STM-64 SDH optical interface framing / deframing chip; The optical line routing switching unit 2 is used to realize optical path routing selection for Ethernet data transmitted via STM-64; The 155M-10G adaptive optoelectronic conversion unit 2 is used to convert electrical signals into optical signals, and vice versa, to achieve the adaptation of the full range (155M-10G) optical signals from STM-1, STM-4, STM-16, and STM-64.

4. An optical transmission method based on optical line routing switching, used in the optical transmission system based on optical line routing switching according to any one of claims 1 to 3, characterized in that: The following steps are involved: The STM-1 / 4 / 16 optical transmission module converts Ethernet services into data in three frame formats: STM-1, STM-4, and STM-16. The optical line routing switch module selects the data at the corresponding rate and connects it to the optical interface after passing through the optoelectronic conversion module. The STM-64 optical transmission module converts Ethernet services into data in the STM-64 rate frame format. The optical line routing switching module selects data of the corresponding rate and completes the external connection of the optical interface after passing through the optoelectronic conversion module.

5. The optical transmission method based on optical line routing switching according to claim 4, characterized in that: The following steps are included in the process where the STM-1 / 4 / 16 optical transmission module converts Ethernet services into data in STM-1, STM-4, and STM-16 frame formats according to user requirements, and the optical line routing switch module selects the data at the corresponding rate. After passing through the optoelectronic conversion module, the optical interface is connected externally. Ethernet PHY chip 1 converts the received Ethernet electrical interface data into MAC layer data in GMII format and interconnects with K7 series logic chip 1, which completes data mapping / demapping. After selecting the STM-1, STM-4, or STM-16 optical port rate according to user requirements, the CPU processor 1 transmits the selected rate information to the optical line routing switch unit 1 and the K7 series logic chip 1 through the communication interface; The data is framed / deframed according to the selected optical port rate of STM-1, STM-4, or STM-16, and transmitted after optical-electrical conversion is completed through the 155M-10G adaptive optical-electrical conversion unit.

6. The optical transmission method based on optical line routing switching according to claim 4, characterized in that: The following steps are included in the process where the STM-64 optical transmission module converts Ethernet services into data in an STM-64 rate frame format, the optical line routing switch module selects data of the corresponding rate, and the optical interface is connected after passing through the optoelectronic conversion module: The Ethernet PHY chip 2 converts Ethernet electrical interface data into MAC layer data in GMII format and interconnects with the K7 series logic chip 2; the K7 series logic chip 2 performs the mapping / demapping function of Ethernet data; The STM-64 optical port rate is selected based on the user's needs and intentions, and the CPU processor 2 transmits the rate to the optical line routing switch unit 2 and the K7 series logic chip 2 through the communication interface; The data framing / deframing functions are completed according to the selected STM-64 optical port rate, and the CDR completes the serial-to-parallel conversion and clock extraction functions of the STM-64 data. The optical-to-electrical conversion is completed and then transmitted through the 155M-10G adaptive optical-to-electrical conversion unit 2.

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