Fiber-to-the-room (fttr) system and wavelength scheduling method

Abstract

Embodiments of the present application provide a fiber to the room (FTTR) system and a wavelength scheduling method, which include an MFU and an SFU. The MFU is configured with an optical transceiver module, and the optical transceiver module is configured to support at least two different wavelengths. The SFU includes a first type of SFU, which is configured to switch between the at least two wavelengths for information transmission or to perform parallel information transmission on the at least two wavelengths. The embodiments solve the problem that multiple wavelength parallel transmission cannot be achieved and the carrying capacity is weak in a super-high-speed wireless access scenario in the related art, and achieve the effects of realizing multiple wavelength parallel transmission and improving the carrying capacity in a super-high-speed wireless access scenario.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communications, and more specifically, to a fiber-to-the-room (FTTR) system and a wavelength scheduling method. Background Technology

[0002] Among related technologies, potential applications of Fibre-to-the-Room (FTTR) systems exceeding 10 Gbit / s include: local wired connections to local servers, routers, or Ethernet switches at speeds exceeding 10 Gbit / s for further local distribution on the LAN side; or, connecting to Wi-Fi 7 wireless networks with speeds exceeding 10 Gbit / s.

[0003] In related technologies, FTTR systems exceeding 10G speeds can be implemented using single-wavelength FTTR systems with speeds exceeding 10G, such as 25G or 50G speeds; or with a single-wavelength 10G speed, achieving speeds exceeding 10G through wavelength division multiplexing (WDM). In WDM scenarios, by upgrading selected components of the existing 2.5G Fiber-to-the-Home Indoor Platform (FIP) infrastructure, 2.5G and 10G Sub-FTTR Units (SFUs) can operate simultaneously on the same FIP network. Downstream and upstream, 2.5G and 10G signals are transmitted at their respective data rates on different wavelengths. However, this approach places additional demands on FIP equipment: the 2.5G SFU and 10G SFU need to operate at different wavelengths, and a Combination Main FTTR Unit (Combo MFU) is required to combine them into a Main FTTR Unit (MFU) that simultaneously supports 2.5G and 10G speeds.

[0004] The existing system lacks the ability to differentiate wavelength scheduling for different service types (such as ordinary broadband and low-latency services). All terminals share the same wavelength resources, which makes it impossible to achieve isolated transmission and priority guarantee of low-latency services, and also impossible to dynamically load balance, thus restricting the system's carrying capacity in ultra-high-speed wireless access scenarios. Summary of the Invention

[0005] This invention provides a fiber-to-the-room (FTTR) system and a wavelength scheduling method to at least solve the problems of the inability to achieve multi-wavelength parallel transmission and the weak carrying capacity in ultra-high-speed wireless access scenarios in related technologies.

[0006] According to one embodiment of the present invention, a fiber-to-room (FTTR) system is provided, comprising: a master fiber-to-room (MFU) and a slave fiber-to-room (SFU), wherein the MFU is configured with an optical transceiver module that is configured to support at least two different wavelengths; and the SFU includes a first type of SFU configured to switch between at least two wavelengths for information transmission or to perform parallel information transmission at at least two wavelengths.

[0007] According to another embodiment of the present invention, a wavelength scheduling method is provided, applied to any of the fiber-to-room (FTTR) systems described above, comprising: sending a first message from a fiber-to-room (SFU) device to a master fiber-to-room (MFU) device, the first message including operating wavelength support capability information of the SFU; the SFU receiving a second message from the MFU, the second message including indication information for instructing the SFU to switch to a target operating wavelength.

[0008] According to yet another embodiment of the present invention, a computer-readable storage medium is also provided, wherein a computer program is stored therein, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

[0009] According to yet another embodiment of the present invention, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0010] According to yet another embodiment of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0011] The present invention provides a fiber-to-the-room (FTTR) system through the above embodiments, including an MFU and a SFU. The MFU is configured with an optical transceiver module, which is configured to support at least two different wavelengths. The SFU includes a first type of SFU, which is configured to switch between at least two wavelengths for information transmission, or to perform parallel information transmission at at least two wavelengths. This solves the problems of inability to achieve multi-wavelength parallel transmission and weak carrying capacity in ultra-high-speed wireless access scenarios in related technologies, achieving the effect of realizing multi-wavelength parallel transmission and improving the carrying capacity in ultra-high-speed wireless access scenarios. Attached Figure Description

[0012] Figure 1 This is a flowchart of the wavelength scheduling method according to an embodiment of the present invention;

[0013] Figure 2This is a schematic diagram of the overall implementation of the FTTR system according to an embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the first implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram of a second implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention;

[0016] Figure 5 This is a schematic diagram of a third implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention;

[0017] Figure 6 This is a schematic diagram of the fourth implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention;

[0018] Figure 7 This is a schematic diagram of the fifth implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention;

[0019] Figure 8 This is a schematic diagram of the sixth implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention;

[0020] Figure 9 This is a structural block diagram of the wavelength scheduling device according to an embodiment of the present invention;

[0021] Figure 10 This is a schematic diagram of the downlink wavelength indication of the FTTR system according to an embodiment of the present invention;

[0022] Figure 11 This is a schematic diagram of the uplink wavelength indication of the FTTR system according to an embodiment of the present invention;

[0023] Figure 12 This is a schematic diagram of wavelength control in an FTTR system according to an embodiment of the present invention. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] This invention provides an FTTR system, including a main fiber-to-room unit (MFU) and a secondary fiber-to-room unit (SFU). The MFU is equipped with an optical transceiver module configured to support at least two different wavelengths. The SFU includes a first type of SFU configured to switch between at least two wavelengths for information transmission, or to perform parallel information transmission at at least two wavelengths.

[0027] In this embodiment of the invention, the optical transceiver module can be a combination optical module (Combination optical module, Combo optical module).

[0028] In this embodiment of the invention, the number of the first type of SFU can be multiple.

[0029] In this embodiment of the invention, the above-mentioned optical transceiver module, namely the Combo optical module, is divided into a first type of combined optical module and a second type of combined optical module according to the different upgrade methods of the traditional Combo optical module.

[0030] In one exemplary embodiment, the optical transceiver module includes a first type of combined optical module, which includes a wavelength division multiplexing device.

[0031] In this embodiment of the invention, the first type of combined optical module is obtained by integrating wavelength division multiplexing (WDM) devices into a conventional combo optical module.

[0032] In one exemplary embodiment, the SFU also includes a second type of SFU.

[0033] In this embodiment of the invention, the 10G Fiber-to-the-Home Indoor Network (FIN) system can enable different wavelength 10G SFUs to operate simultaneously on the same Fiber-to-the-Home Indoor Platform FIP network by upgrading selected components of the existing 10G FIP infrastructure. Taking three 10G SFUs connected under a 10G MFU as an example, by integrating wavelength division multiplexing (WDM) devices into the Combo optical module, the MFU is upgraded to a 10G & 10G combined MFU (10G & 10G Combo MFU), which can simultaneously support uplink and downlink data transmission at two 10G rate wavelengths, λ1 and λ2.

[0034] In this embodiment of the invention, a traditional 10G SFU (Legacy 10G SFU) can register for authentication and perform data transmission at the default wavelength λ1. The remaining SFUs are upgraded to Next-Gen 10G SFUs. The Next-Gen 10G SFU can take various forms, such as supporting only wavelength λ2, registering for authentication and performing data transmission at wavelength λ2 after power-on; it can also support both wavelengths λ1 and λ2 simultaneously but operate on only one of them, registering for authentication at the default wavelength λ1 after power-on, and switching from wavelength λ1 to wavelength λ2 for data transmission via wavelength control; or it can simultaneously support both wavelengths λ1 and λ2 and operate on both wavelengths, registering for authentication and performing data transmission at both wavelengths simultaneously after power-on.

[0035] It should be noted that the above-mentioned traditional 10G SFU is the second type of SFU in the above embodiments of the present invention, and the above-mentioned next-generation 10G SFU is the first type of SFU in the above embodiments of the present invention.

[0036] In this embodiment of the invention, by integrating WDM to upgrade the 10G MFU and replacing some 10G SFUs with next-generation 10G SFUs, wavelength division multiplexing and load balancing are achieved, and the line rate can reach up to 20Gbit / s. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, the line rate can achieve higher throughput.

[0037] In one exemplary embodiment, the optical transceiver module includes a second type of combined optical module and an external coexistence device connecting the second type of combined optical module and an indoor optical distribution network.

[0038] In this embodiment of the invention, the second type of combined optical module is achieved by setting an external coexistence device between the optical module and the indoor optical distribution network. In actual implementation, the second type of combined optical module can be a 10G optical module, and then the 10G optical module can be upgraded by setting an external coexistence device between the 10G optical module and the indoor optical distribution network.

[0039] In this embodiment of the invention, the 10G FIN system can enable 10G SFUs of different wavelengths to operate simultaneously on the same FIP network by upgrading selected components of the existing 10G FIP infrastructure. Taking three 10G SFUs connected to a 10G MFU as an example, through an external coexistence device (CEx), the MFU is upgraded to a 10G&10G external combo MFU, which can simultaneously support uplink and downlink data transmission at two 10G rate wavelengths, λ1 and λ2. A traditional 10G SFU (Legacy 10G SFU) can register, authenticate, and transmit data at the default wavelength λ1. The remaining SFUs are upgraded to next-generation 10G SFUs, which can take various forms. For example, they can support only wavelength λ2, register and authenticate on wavelength λ2 after power-on, and then transmit data. They can also support both wavelengths λ1 and λ2, but only work on one of them. After power-on, they can register and authenticate on the default wavelength λ1, and switch from wavelength λ1 to wavelength λ2 for data transmission through wavelength control. Alternatively, they can support both wavelengths λ1 and λ2 and work on both wavelengths simultaneously. After power-on, they can register and authenticate on both wavelengths λ1 and λ2 and then transmit data.

[0040] In this embodiment of the invention, the 10G MFU is upgraded by connecting an external coexistence device CEx, and some 10G SFUs are replaced with next-generation 10G SFUs to achieve wavelength division multiplexing and load balancing. The line rate can reach up to 20Gbit / s. When the upgraded 10G MFU and the upgraded 10G SFU support more wavelengths, the line rate can reach a higher throughput.

[0041] It should be noted that the 10G&10G Combo MFU and 10G&10G External Combo MFU in the embodiments of the present invention are only different names used to distinguish the upgrade methods of 10G MFU. In actual implementation, different naming methods can be used, and no specific restrictions are made here.

[0042] In one exemplary embodiment, the MFU and SFU interact via: a Fiber to the Room Management and Control Interface (FMCI) channel; or a Fiber to the Room Physical Layer Operations, Administration, and Maintenance (F-PLOAM) channel; or an Embedded Operations, Administration, and Maintenance (OAM) channel.

[0043] In this embodiment of the invention, MFU and SFU can be implemented in any way, such as standard or custom FMCI messages of the FMCI management channel, standard or custom F-PLOAM messages of the F-PLOAM management channel, uplink and downlink frame indication bits of the embedded OAM management channel.

[0044] In one embodiment, taking the standard F-PLOAM message as an example, the SFU can report the working wavelength support capability through the serial number SFU (Serial_Number_SFU) message.

[0045] In one embodiment, using the standard F-PLOAM message as an example, the MFU can instruct the SFU to perform operating wavelength switching via the Assign SFU-ID / Wavelength Switching message.

[0046] In one embodiment, taking a custom F-PLOAM message as an example, the MFU can request a specific SFU to report its operating wavelength support capability or instruct the SFU to perform an operating wavelength switch by obtaining the Get_Set_Wavelength_Capabilities message.

[0047] In one embodiment, taking a custom F-PLOAM message as an example, the SFU can report its working wavelength support capabilities through the SFU_Wavelength_Capabilities message.

[0048] In one embodiment, taking the uplink and downlink frame indication bit method of embedded OAM management channel for wavelength capability negotiation as an example, the MFU can indicate the working wavelength of the MFU through downlink physical layer messages, and the downlink wavelength ID field in the Operation Control (OC) structure of the downlink physical layer message indicates the working wavelength of the MFU.

[0049] In one embodiment, taking the uplink and downlink frame indication bits of the embedded OAM management channel as an example for wavelength capability negotiation, the SFU can indicate the working wavelength support capability information of the SFU through the uplink data link layer message, in which the indication field (Ind field) is used.

[0050] In one exemplary embodiment, at least two different wavelengths include a first wavelength and a second wavelength, wherein a second type of SFU transmits information at the first wavelength; a first type of SFU transmits information at the second wavelength; or, a first type of SFU registers at the first wavelength and then switches to the second wavelength for information transmission; or, a first type of SFU registers at the first wavelength and then transmits information in parallel at the first and second wavelengths.

[0051] In this embodiment of the invention, taking three SFUs connected under an MFU as an example, the MFU is a 10G Combo MFU, which can support the coexistence of multiple wavelengths by integrating wavelength division multiplexing devices or external coexistence devices. Some SFUs are traditional 10G SFUs (Legacy10G SFUs), and some SFUs are next-generation 10G SFUs (Next-Gen 10G SFUs). All SFUs can register and authenticate from the default wavelength. During the registration and authentication process, the MFU will negotiate the working wavelength capability and request the service type with the SFU. After the SFU service type is reported, the MFU will send a wavelength control message to the designated SFU according to the working wavelength support capability of the MFU and SFU and the service type of the SFU. After receiving the wavelength control message, the Next-Gen 10G SFU will switch to the designated wavelength for data transmission, realizing the smooth upgrade and evolution of the 10G FIN system and load balancing.

[0052] It should be noted that the example of three SFUs connected to an MFU is just for illustration. In actual implementation, more SFUs or different numbers of SFUs can be connected. There are no specific restrictions here.

[0053] This invention provides a fiber-to-the-room (FTTR) system, including an MFU (Medium-Level Unit) and a SFU (Small-Level Unit). The MFU is equipped with an optical transceiver module configured to support at least two different wavelengths. The SFU includes a first type of SFU configured to switch between at least two wavelengths for information transmission, or to perform parallel information transmission at at least two wavelengths. This solves the problems of inability to achieve multi-wavelength parallel transmission and weak carrying capacity in ultra-high-speed wireless access scenarios in related technologies, achieving the effects of realizing multi-wavelength parallel transmission and improving carrying capacity in ultra-high-speed wireless access scenarios.

[0054] This embodiment provides a wavelength scheduling method applicable to any of the aforementioned fiber-to-room FTTR systems. Figure 1This is a flowchart of the wavelength scheduling method according to an embodiment of the present invention, as follows: Figure 1 As shown, the process includes the following steps:

[0055] In step S102, the SFU sends a first message to the MFU, which includes the SFU's operating wavelength support capability information.

[0056] In step S104, the SFU receives a second message from the MFU, which includes indication information for instructing the SFU to switch to the target operating wavelength.

[0057] In one exemplary embodiment, the first message is a first uplink F-PLOAM message, which carries a first field for indicating the operating wavelength support capability information of the second device; the second message is a first downlink F-PLOAM message, which carries a second field for indicating whether the operating wavelength of the second device and the uplink rate of the second device are allowed.

[0058] In this embodiment of the invention, the first uplink F-PLOAM message includes a standard serial number SFU message (Serial_Number_SFU), and the first downlink F-PLOAM message includes a standard Assign SFU-ID / Wavelength Switching message (Assign SFU-ID / Wavelength Switching).

[0059] In one embodiment, for the Serial_Number_SFU message, for example, where byte number 37 is the first field in the above embodiment, the reserved bits indicating the working wavelength capability can be further extended when the MFU and SFU support more wavelengths. The bit corresponding to byte number 37 is used to indicate the SFU's working wavelength capability and uplink rate capability. For example, byte number 37 is 0000 ABHL, where AB represents the SFU's working wavelength capability and HL represents the SFU's uplink rate capability. A corresponds to working wavelength λ1, A = 0 indicates no support, A = 1 indicates support. B corresponds to working wavelength λ2, B = 0 indicates support, B = 1 indicates no support. H corresponds to an uplink line rate of 9.95328 Gbit / s, H = 0 indicates no support, H = 1 indicates support. L corresponds to an uplink line rate of 2.48832 Gbit / s, L = 0 indicates support, L = 1 indicates no support.

[0060] Wherein, the working wavelength λ1 is the first wavelength in the above embodiment, and the working wavelength λ2 is the second wavelength in the above embodiment.

[0061] In one embodiment, for the Assign SFU-ID / Wavelength Switching message, for example, byte number 15, which is the second field in the above embodiment, can be further extended for the reserved bits indicating the working wavelength when the MFU and SFU support more wavelengths. The bit corresponding to byte number 15 is used to indicate the working wavelength and the nominal uplink line rate. For example, byte number 15 is 0000 0ABU, where A corresponds to the working wavelength λ1 indication; A = 0 indicates that the SFU is not allowed to operate at wavelength λ1, and A = 1 indicates that the SFU is allowed to operate at wavelength λ1. B corresponds to the working wavelength λ2 indication; B = 0 indicates that the SFU is allowed to operate at wavelength λ2, and B = 1 indicates that the SFU is not allowed to operate at wavelength λ2. U corresponds to the uplink rate indication; U = 0 indicates 2.5 Gbit / s, and U = 1 indicates 10 Gbit / s.

[0062] In an exemplary embodiment, the first message is a second uplink F-PLOAM message, which carries a third field for indicating the operating wavelength support capability information of the second device; the second message is a second downlink F-PLOAM message, which carries a fourth field and a fifth field, whereby the fourth field is used to perform a query operation or configuration operation on the operating wavelength of the second device, and the fifth field is used to indicate whether the operating wavelength of the second device is allowed.

[0063] In this embodiment of the invention, the second uplink F-PLOAM message can be a custom SFU wavelength capability message (SFU_Wavelength_Capabilities). The second downlink F-PLOAM message can be a custom Get_Set_Wavelength_Capabilities message.

[0064] In one embodiment, for SFU_Wavelength_Capabilities, for example, byte number 5 corresponds to the third field in the above embodiment. When the MFU and SFU support more wavelengths, the reserved bits indicating the operating wavelength capability can be further extended. Specifically, the bit corresponding to byte number 5 is used to indicate the SFU's operating wavelength capability. For example, byte number 5 is 000000AB, where AB represents the SFU's operating wavelength capability. Here, A corresponds to operating wavelength λ1, A = 0 indicates no support, and A = 1 indicates support; B corresponds to operating wavelength λ2, B = 0 indicates support, and B = 1 indicates no support.

[0065] In one embodiment, for Get_Set_Wavelength_Capabilities, for example, byte number 13 corresponds to the fourth field in the above embodiment, and byte number 14 corresponds to the fifth field in the above embodiment. When the MFU and SFU support more wavelengths, the reserved bits for the working wavelength indication can be further extended. For example, byte number 13 is opcode 0000000S, where S corresponds to the opcode, S=0 indicates querying the SFU working wavelength, and S=1 indicates setting the SFU working wavelength. The bit corresponding to byte number 14 is used to indicate the working wavelength. For example, byte number 14 is 0000 000AB, which is valid when S=1. Here, A corresponds to the working wavelength λ1 indication, A = 0 indicates that the SFU is not allowed to work at wavelength λ1, and A = 1 indicates that the SFU is allowed to work at wavelength λ1. B corresponds to the working wavelength λ2 indication, B = 0 indicates that the SFU is allowed to work at wavelength λ2, and B = 1 indicates that the SFU is not allowed to work at wavelength λ2.

[0066] In one exemplary embodiment, the first message is an uplink data link layer message, which carries a sixth field, the sixth field being used to indicate the operating wavelength support capability information of the SFU; the second message is a downlink physical layer message, which carries a seventh field, the seventh field being used to indicate the operating wavelength of the MFU.

[0067] In this embodiment of the invention, the sixth field included in the uplink data link layer message may be the Ind field (indication field) of the uplink data link layer (DLL) frame. The seventh field included in the downlink physical layer message may be the downlink wavelength ID field in the Operation Control (OC) structure of the downlink physical interface (PHY).

[0068] In one embodiment, for the aforementioned uplink data link layer DLL frame, the Ind field (indication field) can indicate uplink wavelength capability. An example of the Ind field is shown in Table 1. Ind is a field containing 8 bits. The lowest 2 reserved bits of this field can be used for wavelength capability indication. Bit 0 is 0 to indicate support for working at wavelength λ1, and 1 to indicate no support for working at wavelength λ1. Bit 1 is 0 to indicate no support for working at wavelength λ2, and 1 to indicate support for working at wavelength λ2. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, they can be extended through other reserved bits.

[0069] As shown in Table 1, bit 7 is Physical Layer Operations, Administration and Maintenance (PLOAM), bit 6 is Forward Error Correction (FEC), and bit 5 is Remote Defect Indication (RDI).

[0070] In this context, bit 7 is the most significant bit (MSB), and bit 0 is the least significant bit (LSB).

[0071] Table 1 Example table of Ind field

[0072]

[0073] In one embodiment, for the aforementioned downlink physical layer message, the downlink wavelength ID field of the OC body of the OC structure of the downlink physical layer message indicates the working wavelength of the MFU. The downlink wavelength ID is a field containing 4 bits. The least significant bit (LSB) of this field is used to indicate the wavelength set. As shown in Table 2, a code value of 0 indicates that the downlink uses the λ1 wavelength, and a code value of 1 indicates that the downlink uses the λ2 wavelength. When the upgraded 10G MFU and the upgraded 10G SFU support more wavelengths, they can be extended by each bit representing one wavelength.

[0074] Table 2 Downlink Wavelength ID LSB Encoding

[0075]

[0076] In this embodiment of the invention, the first to seventh fields can be a byte or a specific byte in the corresponding message, and the corresponding information can be indicated by the value of the specific field or byte.

[0077] Figure 2 This is a schematic diagram of the overall implementation of the FTTR system according to an embodiment of the present invention, as shown below. Figure 2 As shown, by upgrading selected components of the existing 10G FIP infrastructure, 10G SFUs of different wavelengths can operate simultaneously on the same FIP network. In both the downstream and upstream directions, 10G signals of different wavelengths are transmitted at their respective data rates on two different wavelengths, λ1 and λ2, with line rates reaching 20 Gbit / s. When the upgraded 10G FIN system supports more wavelengths, line rates can exceed 20 Gbit / s for even higher transmission speeds.

[0078] like Figure 2 As shown, where λ d1 and λ d2 In this context, d represents the downlink wavelength, and λ represents the downlink wavelength. u1 and λ u2 In this context, 'u' represents the uplink wavelength. That is, λ1 can be divided into λ... depending on whether it's uplink or downlink. d1 and λ u1 λ2 can be divided into λ based on the direction of upward and downward movement. d2 and λ u2 .

[0079] Taking a 10G wavelength division multiplexing (WDM) FTTR system as an example, Figure 3 This is a schematic diagram of the first implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention, as shown below. Figure 3 As shown, taking a 10G MFU with three 10G SFUs as an example, the traditional 10G SFU (Legacy 10G SFU) is the original equipment, registering and authenticating at the default wavelength λ1 for data transmission; the next-generation 10G SFU (Next-Gen 10G SFU) is the upgraded equipment, registering and authenticating at wavelength λ2 for data transmission; the 10G & 10G Combo MFU is the upgraded equipment, which can be realized by integrating wavelength division multiplexing (WDM) devices into the Combo optical module, supporting uplink and downlink data transmission at two 10G rate wavelengths, λ1 and λ2, simultaneously. By upgrading the 10G MFU and some 10G SFUs to achieve wavelength division multiplexing and load balancing, the line rate can reach a maximum of 20Gbit / s. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, the line rate can achieve even higher throughput.

[0080] Among them, the 10G MFU transceiver, namely the 10G MFU TRx, is the original equipment of the Combo optical module.

[0081] Figure 4 This is a schematic diagram of a second implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention, as shown below. Figure 4As shown, taking a 10G MFU with three 10G SFUs as an example, the traditional 10G SFU (Legacy 10G SFU) is the original equipment, registered and certified at the default wavelength λ1 for data transmission; the next-generation 10G SFU (Next-Gen 10G SFU) is the upgraded equipment, registered and certified at the default wavelength λ1, and can switch from wavelength λ1 to wavelength λ2 for data transmission via wavelength control; the 10G & 10G Combo MFU is the upgraded equipment, which can be realized by integrating wavelength division multiplexing devices into the Combo optical module, and can simultaneously support uplink and downlink data transmission at two 10G rate wavelengths, λ1 and λ2. By upgrading the 10G MFU and some 10G SFUs to achieve wavelength division multiplexing and load balancing, the line rate can reach up to 20Gbit / s. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, the line rate can achieve even higher throughput.

[0082] Figure 5 This is a schematic diagram of a third implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention, as shown below. Figure 5 As shown, taking a 10G MFU with three 10G SFUs connected as an example, the traditional 10G SFU (Legacy 10G SFU) is the original equipment, registering and authenticating on the default wavelength λ1 and transmitting data. The next-generation 10G SFU (Next-Gen 10G SFU) is the upgraded equipment, which can register and authenticate on both wavelengths λ1 and λ2 and transmit data simultaneously. The 10G & 10G Combo MFU is the upgraded equipment, which can be realized by integrating wavelength division multiplexing devices into the Combo optical module, and can simultaneously support uplink and downlink data transmission on two 10G rate wavelengths, λ1 and λ2. By upgrading the 10G MFU and some 10G SFUs to achieve wavelength division multiplexing and load balancing, the line rate can reach a maximum of 20Gbit / s. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, the line rate can achieve even higher throughput.

[0083] Figure 6 This is a schematic diagram of the fourth implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention, as shown below. Figure 6As shown, taking a 10G MFU with three 10G SFUs connected as an example, the traditional 10G SFU (Legacy 10G SFU) is the original equipment, registering and authenticating on the default wavelength λ1 for data transmission; the next-generation 10G SFU (Next-Gen 10G SFU) is the upgraded equipment, registering and authenticating on wavelength λ2 for data transmission; the 10G & 10G External Combo MFU is the upgraded equipment, which can be implemented through an external coexistence device CEx, supporting uplink and downlink data transmission on both 10G wavelengths λ1 and λ2 simultaneously. By upgrading the 10G MFU and some 10G SFUs to achieve wavelength division multiplexing and load balancing, the line rate can reach a maximum of 20Gbit / s. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, the line rate can achieve even higher throughput.

[0084] Figure 7 This is a schematic diagram of the fifth implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention, as shown below. Figure 7 As shown, taking a 10G MFU with three 10G SFUs connected as an example, the traditional 10G SFU (Legacy 10G SFU) is the original equipment, registered and certified at the default wavelength λ1 for data transmission; the next-generation 10G SFU (Next-Gen 10G SFU) is the upgraded equipment, registered and certified at the default wavelength λ1, and can switch from wavelength λ1 to wavelength λ2 for data transmission via wavelength control; the 10G & 10G External Combo MFU is the upgraded equipment, which can be realized through an external coexistence device CEx, supporting uplink and downlink data transmission at two 10G rate wavelengths, λ1 and λ2, simultaneously. By upgrading the 10G MFU and some 10G SFUs to achieve wavelength division multiplexing and load balancing, the line rate can reach a maximum of 20Gbit / s. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, the line rate can achieve even higher throughput.

[0085] Figure 8 This is a schematic diagram of the sixth implementation of the 10G wavelength division FTTR system according to an embodiment of the present invention, as shown below. Figure 8As shown, taking a 10G MFU with three 10G SFUs connected as an example, the traditional 10G SFU (Legacy 10G SFU) is the original equipment, registering and authenticating on the default wavelength λ1 and transmitting data. The next-generation 10G SFU (Next-Gen 10G SFU) is the upgraded equipment, which can register and authenticate on both wavelengths λ1 and λ2 and transmit data simultaneously. The 10G & 10G External Combo MFU is the upgraded equipment, which can be implemented through an external coexistence device CEx, supporting uplink and downlink data transmission on both 10G wavelengths λ1 and λ2 simultaneously. By upgrading the 10G MFU and some 10G SFUs to achieve wavelength division multiplexing and load balancing, the line rate can reach a maximum of 20Gbit / s. When the upgraded 10G MFU and upgraded 10G SFU support more wavelengths, the line rate can achieve even higher throughput.

[0086] It should be noted that in actual implementation, there is no specific limit to the number of SFUs connected to the MFU, and there is no specific limit to the number of traditional 10G SFUs and next-generation 10G SFUs among the multiple SFUs. In some embodiments, only next-generation 10G SFUs may be included.

[0087] This embodiment also provides a wavelength device for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware implementations, or a combination of software and hardware, are also possible and contemplated.

[0088] Figure 9 This is a structural block diagram of the wavelength scheduling device according to an embodiment of the present invention, as shown below. Figure 9As shown, the device includes a wavelength capability negotiation module, a service type acquisition module, a wavelength scheduling distribution module, and a wavelength scheduling execution module. The wavelength capability negotiation module, service type acquisition module, and wavelength scheduling execution module can be configured in the MFU and SFU, respectively, while the wavelength scheduling distribution module can be configured in the MFU. By using the wavelength scheduling device of this embodiment to switch working wavelengths, low-latency data transmission or load balancing effects can be achieved. This method is not only applicable to FTTR systems but also to Fiber to the Home (FTTH) systems, such as 10Gbit Passive Optical Network (10GPON), 50Gbit Passive Optical Network (50GPON), and Very High-Speed ​​Passive Optical Network (VHSP) systems. In the future, it may be combined with Wi-Fi 8 technology to provide a better user experience. Wavelength control via the above four modules enables the coexistence of Legacy 10G SFU and Next-Gen 10G SFU wavelength division multiplexing, supporting smooth upgrades and load balancing of 10G FIN systems.

[0089] In this embodiment of the invention, the wavelength scheduling device may further include different modules, and the naming and functional division of the modules may be selected in different ways according to the actual situation, without specific limitations.

[0090] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0091] Figure 10 This is a schematic diagram of the downlink wavelength indication of the FTTR system according to an embodiment of the present invention, as shown below. Figure 10 As shown, taking a 10G wavelength division multiplexing (WDM) FTTR system as an example, the downlink wavelength indication in a 10G WDM FTTR system can be indicated through the downlink wavelength ID field of the OC body of the downlink physical frame's OC structure. The downlink wavelength ID is a 4-bit field, where the least significant bit (LSB) indicates the wavelength set. A code value of 0 indicates that the downlink uses wavelength λ1, and a code value of 1 indicates that the downlink uses wavelength λ2. When upgraded 10G MFUs and upgraded 10G SFUs support more wavelengths, this can be extended by having each bit represent one wavelength. For example... Figure 10As shown, the downlink wavelength ID field can be included in the FTTR identifier field (FTTR-ID field). Figure 10 As shown, the FTTR-ID field also includes a management identifier field.

[0092] Figure 11 This is a schematic diagram of the uplink wavelength indication of the FTTR system according to an embodiment of the present invention, as shown below. Figure 11 As shown, taking a 10G wavelength division multiplexing (WDM) FTTR system as an example, the uplink wavelength capability of a 10G WDM FTTR system can be indicated through the Ind field of the DLL header of the uplink DLL frame. Ind is an 8-bit field, and the lowest two reserved bits can be used for wavelength capability indication. Bit 0 being 0 indicates support for operating at wavelength λ1, and bit 1 being 1 indicates no support for operating at wavelength λ1. Bit 1 being 0 indicates no support for operating at wavelength λ2, and bit 1 being 1 indicates support for operating at wavelength λ2. When upgraded 10G MFUs and upgraded 10G SFUs support more wavelengths, this can be extended using other reserved bits. For example... Figure 11 As shown, the SFU ID in the DLL header is the SFU identifier, and PLOAMu indicates a PLOAM message. DBRu in the uplink DLL frame indicates an uplink dynamic bandwidth report.

[0093] Figure 12 This is a schematic diagram of wavelength control in an FTTR system according to an embodiment of the present invention, as shown below. Figure 12 As shown, taking a 10G wavelength division multiplexing (WDM) FTTR system as an example, and with three SFUs connected to an MFU, the MFU is a 10G Combo MFU, which can support multiple wavelengths coexisting by integrating WDM multiplexing devices or external coexistence devices. SFU1 is a Legacy 10G SFU, and SFU2 and SFU3 are Next-Gen 10G SFUs. The three SFUs can register and authenticate from the default wavelength. During the registration and authentication process, the MFU will negotiate the working wavelength capability and request service types with SFU1, SFU2, and SFU3. After the SFU service type is reported, the MFU will send a wavelength control message to the designated SFU according to the working wavelength support capability of the MFU and SFU and the SFU service type. After receiving the wavelength control message, the Next-Gen 10G SFU will switch to the designated wavelength for data transmission, realizing the smooth upgrade and evolution of the 10G FIN system and load balancing.

[0094] In summary, the FTTR system provided by this invention achieves a line transmission rate of 20 Gbit / s or higher by integrating wavelength division multiplexing (WDM) devices or external coexistence devices. Simultaneously, wavelength control is performed through four modules: a wavelength capability negotiation module, a service type acquisition module, a wavelength control distribution module, and a wavelength control execution module. This enables the coexistence of Legacy 10G SFU and Next-Gen 10G SFU WDM systems, supporting smooth upgrades and load balancing of the 10G FIN system. The technical solution of this invention is not only applicable to FTTR systems but also has some applicability to FTTH systems, such as 10G-PON, 50G-PON, and VHSP systems.

[0095] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0096] This invention also provides a network device, which includes a receiver, a transmitter, and a processor. The network device is used to execute the steps of the wavelength scheduling method embodiments described above through at least one of the receiver, transmitter, and processor.

[0097] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

[0098] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0099] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0100] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0101] This invention also provides a computer program product, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0102] In one exemplary embodiment, the computer program product described above includes a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the methods described in various embodiments of this application.

[0103] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0104] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0105] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fiber-to-the-room (FTTR) system, characterized in that, include: Main Fiber to Room Unit (MFU) and Sub-Fiber to Room Unit (SFU) The MFU is equipped with an optical transceiver module, which is configured to support at least two different wavelengths. The SFU includes a first type of SFU, which is configured to switch between at least two of the wavelengths for information transmission, or to perform parallel information transmission at at least two of the wavelengths.

2. The system according to claim 1, characterized in that, The optical transceiver module includes a first type of combined optical module, which includes wavelength division multiplexing devices.

3. The system according to claim 1, characterized in that, The optical transceiver module includes a second type of combined optical module and an external coexistence device connected between the second type of combined optical module and the indoor optical distribution network.

4. The system according to claim 1, characterized in that, The MFU and the SFU exchange information in the following ways: Fiber to the Room Management Control Interface (FMCI) channel; Alternatively, fiber-to-the-room operation and management F-PLOAM channel; Alternatively, an embedded operation and management OAM channel.

5. The system according to claim 1, characterized in that, The SFU also includes a second type of SFU.

6. The system according to claim 5, characterized in that, At least two different wavelengths include a first wavelength and a second wavelength. The second type of SFU transmits information at the first wavelength; The first type of SFU transmits information on the second wavelength; or, the first type of SFU switches to the second wavelength for information transmission after registering on the first wavelength; or, the first type of SFU transmits information in parallel on both the first and second wavelengths after registering on the first wavelength.

7. A wavelength scheduling method, characterized in that, Applied to the fiber-to-room FTTR system of any one of claims 1-6, comprising: The fiber-to-room (SFU) sends a first message to the main fiber-to-room (MFU), the first message including the operating wavelength support capability information of the SFU. The SFU receives a second message from the MFU, the second message including indication information for instructing the SFU to switch to the target operating wavelength.

8. The method according to claim 7, characterized in that, The first message is a first uplink F-PLOAM message, which carries a first field. The first field is used to indicate the operating wavelength support capability information of the SFU. The second message is a first downlink F-PLOAM message, which carries a second field. The second field is used to indicate whether the operating wavelength of the SFU and the uplink rate of the SFU are allowed.

9. The method according to claim 7, characterized in that, The first message is a second uplink F-PLOAM message, which carries a third field, the third field being used to indicate the operating wavelength support capability information of the SFU; The second message is a second downlink F-PLOAM message, which carries a fourth field and a fifth field. The fourth field is used to perform a query operation or a configuration operation on the operating wavelength of the SFU, and the fifth field is used to indicate whether the operating wavelength of the SFU is allowed.

10. The method according to claim 7, characterized in that, The first message is an uplink data link layer message, which carries a sixth field, which is used to indicate the operating wavelength support capability information of the SFU; The second message is a downlink physical layer message, which carries a seventh field, which is used to indicate the operating wavelength of the MFU.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the method described in any one of claims 7 to 10.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method described in any one of claims 7 to 10.

13. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 7 to 10.

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