Signal transmission equipment, signal transmission method, system and storage medium
By adopting optical time slot technology in OTN premium dedicated lines, sharing downlink signals and reducing WDM optical modules, the problem of high optical cable costs in OTN premium dedicated lines is solved, and the effect of reducing deployment costs and improving engineering efficiency is achieved.
Patent Information
- Application Number
- CN202410063787.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2025-07-18
Smart Images
Figure CN120342539A_ABST
Abstract
Description
Technical Field
[0001] Embodiments of the present application relate to the field of communication technologies, and in particular, to a signal transmission device, a signal transmission method, a system, and a storage medium. Background Art
[0002] In high-quality government and enterprise dedicated lines of an optical transport network (OTN), an independent optical cable is required between a central office (CO) and a customer premises equipment (CPE). Whenever a new user end is added, a section of optical cable needs to be added between the CO and the CPE. In this way, the cost of the optical cable is high and the engineering efficiency is low. Therefore, a low-cost access method is needed.
[0003] Due to the high penetration rate of home broadband and an optical distribution network (ODN), the ODN can be used to open high-quality OTN dedicated lines, which can not only solve the problem of large consumption of optical cable resources, but also eliminate the time for laying optical cables, achieving the effect of quickly opening dedicated lines. The remote CPE of each high-quality OTN dedicated line adopts dense wavelength division multiplexing (DWDM) technology, and a multiplexer / demultiplexer module (MUX) needs to be deployed at the CO position to multiplex the DWDM wavelengths, and the multiplexed DWDM signal is multiplexed with a passive optical network (PON) signal through a fiber interface unit (FIU). The multiplexed signal reaches a splitter through a shared optical fiber, and the signal is broadcast to the user end through the splitter through the optical fiber and filtered through the MUX, and only the corresponding wavelength is transferred to the OTN CPE for processing.
[0004] Since each client at the CPE position corresponds to a wavelength division multiplexing (WDM) optical module at the CO position, multiple WDM optical modules need to be deployed in the WDM device at the CO position. At the same time, MUXs need to be deployed at both the CO position and the CPE position for filtering processing, resulting in too high deployment costs. Summary of the Invention
[0005] Embodiments of the present application provide a signal transmission device, a signal transmission method, a system, and a storage medium for reducing the deployment cost on high-quality OTN dedicated lines.
[0006] In a first aspect of an embodiment of the present application, a signal transmission device is provided, including: a first optical module and a first electrical layer device. The first optical module is configured to receive a first downlink signal, the first downlink signal includes a first data frame, the first data frame includes a plurality of optical time slots, and each optical time slot includes at least one downlink service. The first electrical layer device is configured to parse the plurality of optical time slots in the first data frame to obtain a first downlink service corresponding to the signal transmission device.
[0007] In this embodiment, since each optical time slot in the first data frame carries a downlink service, multiple signal transmission devices can share a downlink signal and obtain corresponding downlink services from different optical time slots in the same data frame. Therefore, only one downlink signal is required to send downlink services to multiple signal transmission devices, thereby reducing the number of required downlink signals, further reducing the number of required WDM optical modules, and lowering the deployment cost.
[0008] In some optional embodiments, at least a first optical time slot is included in the plurality of optical time slots in the first data frame. The first optical time slot is an optical time slot corresponding to the signal transmission device, and the first downlink service corresponding to the signal transmission device is included in the first optical time slot. The first electrical layer device is specifically configured to parse the first optical time slot to obtain the first downlink service.
[0009] In this embodiment, each signal transmission device corresponds to an optical time slot in the first data frame. Therefore, a data frame can include downlink services corresponding to multiple signal transmission devices, enabling multiple signal transmission devices to share a downlink signal and obtain corresponding downlink services from different optical time slots in the same data frame. Thus, a MUX can be deployed on the CPE side for demultiplexing, reducing the deployment cost.
[0010] In some optional embodiments, the first downlink signal includes a first downlink optical signal and a second downlink optical signal, and the first data frame is included in the first downlink optical signal. The first optical module is further configured to separate the received first downlink signal to obtain the first downlink optical signal and the second downlink optical signal.
[0011] In some optional embodiments, the signal transmission device further includes a second electrical layer device. The first electrical layer device is configured to parse the first downlink optical signal, and the second electrical layer device is configured to parse the second downlink optical signal.
[0012] In this embodiment, since the signal transmission device can receive and parse two downlink optical signals, only one signal transmission device can be deployed on the CPE side to process two different downlink optical signals, reducing the deployment cost.
[0013] In some alternative embodiments, the first optical module is further configured to transmit a first upstream signal, the first upstream signal includes a second data frame, wherein the rate level of the second data frame is lower than that of the first data frame, and the second data frame includes at least one upstream service.
[0014] In this embodiment, since the rate required for transmitting the upstream signal is lower than that for transmitting the downstream signal, the fact that the rate level of the second data frame is lower than that of the first data frame can save signal overhead.
[0015] In some alternative embodiments, the first upstream signal includes a first upstream optical signal and a second upstream optical signal, and the second data frame is included in the first upstream optical signal. The first optical module is further configured to combine the first upstream optical signal and the second upstream optical signal into the first upstream signal.
[0016] A second aspect of the embodiments of the present application provides a signal transmission device, including: a second optical module. The second optical module is configured to modulate a first downstream optical signal, the first downstream optical signal includes a first data frame, and the first data frame includes a plurality of optical time slots, and each optical time slot includes at least one downstream service. The second optical module is further configured to transmit the first downstream optical signal.
[0017] In this embodiment, by modulating the first downstream optical signal, each optical time slot in the first data frame includes at least one downstream service. Therefore, the WDM device on the CO side does not need to deploy multiple WDM optical modules, and can transmit data to multiple CPEs through one signal, reducing the cost of deploying the MUX and lowering the deployment cost.
[0018] In some alternative embodiments, the second optical module is further configured to receive a second upstream signal, the second upstream signal includes a plurality of first upstream optical signals, each first upstream optical signal includes a second data frame, the rate level of the second data frame is lower than that of the first data frame, and each second data frame includes at least one upstream service.
[0019] In some alternative embodiments, the wavelengths of the respective signals in the plurality of first upstream optical signals are different, wherein the plurality of first upstream optical signals include at least a second upstream optical signal and a third upstream optical signal, the second upstream optical signal corresponds to a first wavelength, and the third upstream optical signal corresponds to a second wavelength. The second optical module is further configured to separate the second upstream signal to obtain the second upstream optical signal and the third upstream optical signal, and process the second upstream optical signal through a first channel and process the third upstream optical signal through a second channel, the first channel corresponds to the first wavelength, and the second channel corresponds to the second wavelength.
[0020] A third aspect of the present application provides a signal transmission method. In this method, a first device is located on the CPE side and receives a first downlink signal. The first downlink signal includes a first data frame, and the first data frame includes multiple optical time slots. Each optical time slot includes at least one downlink service. The first device parses the first data frame to obtain the first downlink service corresponding to the first device.
[0021] In some optional embodiments, among the multiple optical time slots included in the first data frame, the optical time slot corresponding to the first device is the first optical time slot, and the first optical time slot includes the first downlink service corresponding to the first device. Specifically, the first device parses the first optical time slot in the first data frame to obtain the first downlink service.
[0022] In some optional embodiments, the first downlink signal includes a first downlink optical signal and a second downlink optical signal, and the first data frame is included in the first downlink optical signal. For example, the first downlink optical signal is a DWDM signal, the second downlink optical signal is a PON signal, the first data frame is an OTN frame, and the OTN frame is included in the DWDM signal. The first device separates the first downlink signal to obtain the first downlink optical signal and the second downlink optical signal.
[0023] In some optional embodiments, the first device sends a first uplink signal. The first uplink signal includes a second data frame, where the rate level of the second data frame is less than the rate level of the first data frame, and each second data frame includes at least one uplink service.
[0024] In some optional embodiments, the first uplink signal includes a first uplink optical signal and a second uplink optical signal, and the second data frame is included in the first uplink optical signal. Specifically, the first device can also combine the first uplink optical signal and the second uplink optical signal into the first uplink signal.
[0025] The beneficial effects of the third aspect of the present application can be understood by referring to the beneficial effects of the first aspect and its corresponding implementation manners, and will not be elaborated here specifically.
[0026] A fourth aspect of the present application provides a signal transmission method. In this method, a second device is located on the CO side. The second device modulates the first downlink optical signal. The first downlink optical signal includes a first data frame, and the first data frame includes multiple optical time slots. Each optical time slot includes at least one downlink service. The second device sends the first downlink optical signal.
[0027] In some optional embodiments, the second device receives a second uplink signal. The second uplink signal includes multiple first uplink optical signals. Each first uplink optical signal includes a second data frame. The rate level of the second data frame is less than the rate level of the first data frame, and each second data frame includes at least one uplink service.
[0028] In some alternative embodiments, the wavelengths of each of the first uplink optical signals in the second uplink signal are different. Among them, at least the second uplink optical signal and the third uplink optical signal are included in the multiple first uplink optical signals. The second uplink optical signal is the first uplink optical signal at the first wavelength, and the third uplink optical signal is the first uplink optical signal at the second wavelength. Specifically, the second device also separates the second uplink optical signal into the second uplink optical signal and the third uplink optical signal, processes the second uplink optical signal through the first channel, and processes the third uplink optical signal through the second channel. The first channel corresponds to the first wavelength, and the second channel corresponds to the second wavelength.
[0029] The beneficial effects of the fourth aspect of this application can be understood by referring to the beneficial effects of the second aspect and its corresponding implementation manners, and will not be elaborated here specifically.
[0030] The fifth aspect of this application provides a signal transmission system, including:
[0031] An optical splitter, a signal transmission device as described in the first aspect above, and a signal transmission device as described in the second aspect above;
[0032] The output end of the optical splitter is connected to multiple signal transmission devices as described in the first aspect above, and the input end of the optical splitter is connected to the signal transmission device as described in the second aspect above.
[0033] The sixth aspect of this application provides a signal transmission system, including:
[0034] An optical splitter, an optical fiber interface unit, a signal transmission device as described in the first aspect above, and a signal transmission device as described in the second aspect above;
[0035] The input end of the optical splitter is connected to the output end of the optical fiber interface unit, the output end of the optical splitter is connected to multiple signal transmission devices as described in the first aspect above, and the input end of the optical fiber interface unit is connected to the signal transmission device as described in the second aspect above.
[0036] The seventh aspect of this application provides a computer-readable storage medium, including instructions, which when running on a computer, cause the computer to execute the method as described in the third aspect above, or cause the computer to execute the method as described in the fourth aspect above.
[0037] The eighth aspect of this application provides a computer program product containing instructions, which when running on a computer, cause the computer to execute the method as described in the third aspect above, or cause the computer to execute the method as described in the fourth aspect above.
[0038] The beneficial effects of the fifth to eighth aspects can be understood by referring to the beneficial effects of the first aspect and its corresponding implementation or the second aspect and its corresponding implementation, and will not be elaborated here specifically. BRIEF DESCRIPTION OF THE DRAWINGS
[0039] Figure 1 It is a network architecture diagram in an embodiment of the present application;
[0040] Figure 2 It is a schematic diagram of an application scenario applicable to the configuration signal transmission method in an embodiment of the present application;
[0041] Figure 3 It is a schematic diagram of an embodiment of the signal transmission method in an embodiment of the present application;
[0042] Figure 4 It is a schematic diagram of an embodiment of the signal transmission system in an embodiment of the present application;
[0043] Figure 5 It is a schematic diagram of another embodiment of the signal transmission system in an embodiment of the present application;
[0044] Figure 6 It is a schematic diagram of an embodiment of the downlink signal data frame in an embodiment of the present application;
[0045] Figure 7 It is a schematic diagram of another embodiment of the signal transmission method in an embodiment of the present application;
[0046] Figure 8 It is a schematic diagram of an embodiment of the uplink signal data frame in an embodiment of the present application;
[0047] Figure 9 It is a schematic diagram of an embodiment of the signal transmission device in an embodiment of the present application;
[0048] Figure 10 It is a schematic diagram of another embodiment of the signal transmission device in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0049] Embodiments of the present application provide a signal transmission device, a signal transmission method, a system and a storage medium, which are applied to the field of communication technology, and can enable no MUX to be deployed at the CO and CPE, thereby reducing the deployment cost on the OTN premium dedicated line.
[0050] The embodiments of the present application will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will know that with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.
[0051] In the description, claims and drawings of this application, terms such as "first" and "second" are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, which is only a way of distinguishing objects with the same attributes when describing embodiments of this application. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or device comprising a series of units does not have to be limited to those units, but may include other units not clearly listed or inherent to these processes, methods, products or devices.
[0052] In this application, "for indicating" may include for direct indication and for indirect indication. When describing that a certain indication information is used to indicate A, it may include that the indication information directly indicates A or indirectly indicates A, and does not mean that A must be carried in the indication information.
[0053] In addition, the specific indication methods may also be various existing indication methods, such as, but not limited to, the above-mentioned indication methods and their various combinations, etc. The specific details of various indication methods can refer to the prior art and will not be elaborated herein. As can be seen from the above, for example, when multiple pieces of information of the same type need to be indicated, there may be a situation where the indication methods of different information are different. In the specific implementation process, the required indication method can be selected according to specific needs. The embodiments of this application do not limit the selected indication method. In this way, the indication methods involved in the embodiments of this application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.
[0054] In the embodiments of this application, descriptions such as "when...", "in the case of...", "if" and "if" all refer to that the device will perform corresponding processing under a certain objective situation, which does not limit the time, and does not require the device to have a judgment action when implemented, nor does it mean that there are other limitations.
[0055] For the convenience of understanding this solution, the following briefly describes the technical terms involved in the embodiments of this application:
[0056] Broadband is mainly divided into two types: dedicated lines (enterprise broadband) and home broadband. This is a distinction made by the operator according to different customers, and different services and policies are implemented according to the requirements of the two. The government-enterprise dedicated line broadband is a dedicated link with various rates provided by the operator for customers, directly connecting to the backbone network, providing a convenient and fast high-speed Internet access service. Customers can access the Internet through wired or wireless methods and can flexibly select the bandwidth. In addition to providing the basic high-speed Internet access function, the government-enterprise dedicated line broadband can also carry a variety of new Internet integrated applications, such as multimedia information query, IP phone, video conference, online banking or e-commerce, etc.
[0057] WDM is a technology that combines optical signals of two or more different wavelengths at the transmitting end and couples them into the same optical fiber of the optical line for transmission. At the receiving end, the optical carriers of various wavelengths are separated, and then further processed by an optical receiver to restore the original signal. Among them, DWDM technology uses the C band and the L band. The wavelength range of the C band is 1528 to 1561 nanometers, and the wavelength range of the L band is 1577 to 1603 nanometers. DWDM technology selects dense optical carriers with a certain wavelength interval from each other. These optical carriers are modulated by different digital signals respectively, and are multiplexed on a single optical fiber for transmission, which improves the transmission capacity of each optical fiber.
[0058] Please refer to Figure 1 , the following briefly describes the network architecture based on the signal transmission method in the embodiments of the present application:
[0059] The OTN networking dedicated line is connected to the second device at the metro CO. The second device sends a first downlink optical signal to the first device on the user side. When there are multiple first devices on the user side, the second device can send an optical signal to the optical splitter, and after being split by the optical splitter, it broadcasts to each first device. Among them, the second device can be a WDM device, and the first device can be a CPE.
[0060] Figure 2 Fig. shows an application scenario applicable to the present application. The remote CPE of each OTN premium dedicated line adopts DWDM technology. At the CO location, it is necessary to multiplex the DWDM wavelengths through a MUX, and then multiplex the multiplexed DWDM signal with the PON signal through a FIU. The multiplexed signal reaches the optical splitter through a shared optical fiber, and the signal is broadcast to the access customer side through the optical splitter nearby through the optical fiber, and is filtered through a MUX, and only the corresponding wavelength is transferred to the CPE for processing. For example, if there are 8 CPEs on the user side, the WDM device on the CO side needs to configure 8 WDM optical modules. Each WDM optical module sends 8 10G single-wave signals with different wavelengths, and each single-wave signal includes at least one downlink service. The user-side CPE receives the corresponding 10G single-wave signal from the MUX according to the corresponding wavelength and processes it.
[0061] However, in this embodiment, MUX needs to be deployed at both the CO location and each CPE location. At the same time, since each WDM optical module corresponds to a CPE and is distinguished by wavelength, a plurality of WDM optical modules need to be deployed, resulting in high deployment costs.
[0062] In view of this, please refer to Figure 3 , in the downlink direction, a signal transmission method in the embodiments of the present application includes:
[0063] 301. The second device sends a first downlink optical signal;
[0064] As Figure 4 shown, the second device includes a second optical module and a first electrical layer device. The first electrical layer device generates a first data frame and sends it to the second optical module, and the second optical module modulates an optical signal to obtain a first downlink optical signal. The second device sends the first downlink optical signal to a splitter through the second optical module. After the first downlink optical signal is split by the splitter, it is sent to multiple first devices.
[0065] In practical applications, an optical line terminal (OLT) device can be deployed at the CO position, such as Figure 5 shown. The OLT device sends a second downlink optical signal, and the second device sends a first downlink optical signal. The first downlink signal is obtained by multiplexing at the FIU. The FIU sends the first downlink signal to the splitter, and after the first downlink signal is split by the splitter, it is sent to each first device.
[0066] In this embodiment, the first downlink optical signal is a DWDM single-wave signal with a wavelength range of 1528 to 1567 nanometers, and the second downlink optical signal is a PON optical signal with a wavelength range of 1575 to 1580 nanometers. In practical applications, the first downlink optical signal and the second downlink optical signal can also be other optical signals, which are not specifically limited here.
[0067] The first electrical layer device can be an OTN electrical layer device, and the first data frame is an OTN frame. The OTN frame is used to carry various service data and provides rich management and monitoring functions. The OTN frame can be ODUk, ODUCn, ODUflex, or optical transport unit k (OTUk), OTUCn, or flexible OTN (FlexO) frame, etc. Among them, the difference between the ODU frame and the OTU frame is that the OTU frame includes the ODU frame and OTU overhead; k represents different rate levels. For example, k = 1 represents 2500 megabits per second, that is, 2.5 Gbps, and k = 4 represents 100 Gbps; Cn represents a variable rate, specifically a rate that is a positive integer multiple of 100 Gbps. It can be understood that unless otherwise specified, the ODU frame refers to any one of ODUk, ODUCn, or ODUflex, and the OTU frame refers to any one of OTUk, OTUCn, or FlexO.
[0068] Taking OTUk as an example, the first data frame can be OTU4, OTU3, OTU2, OTU1 or OTU0. The rate level of the OTU0 frame is 1.25 Gbps, which includes 1 optical time slot, and the bandwidth granularity of each optical time slot is 1.25 G. The rate level of the OTU1 frame is 2.5 Gbps, including 2 optical time slots; the rate level of the OTU2 frame is 10 Gbps, including 8 optical time slots; the rate level of the OTU3 frame is 40 Gbps, including 32 optical time slots; the rate level of the OTU4 frame is 100 Gbps, including 80 optical time slots. Taking the OTU2 frame as an example, as Figure 6 shown, among the 8 optical time slots in the OTU2 frame, each optical time slot carries a downlink service. For example, in this data frame, time slot 1 carries downlink service 1, time slot 2 carries downlink service 2, and time slot 8 carries downlink service 8. In practical applications, the first data frame can also be OTU3 or OTU4, which is not specifically limited here.
[0069] In practical applications, the first data frame can include small-grain optical time slots. For example, the fine grain optical transport network (fgOTN) technology adopts a fixed time slot allocation design with a 10 M bandwidth as the unit. Taking the OTU2 frame as an example, the OTU2 frame can include 952 fgOTN time slots, and the downlink service can be carried on one or more fgOTN time slots, thus corresponding to multiple CPEs.
[0070] In the embodiments of the present application, since multiple optical time slots in the first data frame all carry downlink services, only one optical signal needs to be sent to transmit the downlink service, without the need for multiple WDM optical modules to send downlink optical signals to carry multiple downlink services, reducing the number of WDM optical modules required. And since the second device only sends one optical signal, there is no need to deploy a MUX at the CO location to multiplex multiple signals, thereby reducing the deployment cost.
[0071] 302. The first device receives the first downlink signal;
[0072] As Figure 4 shown, at this time, the first downlink signal is the first downlink optical signal. After the second device receives the first downlink optical signal, it obtains the first data frame through the first optical module.
[0073] As Figure 5 shown, at this time, the first downlink signal is the signal after multiplexing the first downlink optical signal and the second downlink optical signal. After the second device receives the first downlink signal, it separates the first downlink signal into the first downlink optical signal and the second downlink optical signal through the first optical module.
[0074] In this embodiment, the first downlink optical signal is a DWDM single-wavelength signal, and the second downlink optical signal is a PON optical signal. In practical applications, the first downlink optical signal and the second downlink optical signal can also be other types of optical signals, which are not specifically limited here.
[0075] 303. The first device processes the first downlink signal;
[0076] As Figure 4 shown, the first device transfers the first downlink optical signal to the first electrical layer device for processing. The first data frame includes multiple time slots, and each first device corresponds to a different time slot. The first device obtains the corresponding downlink service according to its own corresponding time slot. For example, Figure 6 if one of the first devices in
[0077] As Figure 5 shown, the first downlink signal may further include a second downlink optical signal. The first device separates the first downlink signal into the first downlink optical signal and the second downlink optical signal. The first device includes a first electrical layer device and a second electrical layer device, transfers the first downlink optical signal to the first electrical layer device for processing, and transfers the second downlink optical signal to the second electrical layer device for processing. In practical applications, the first electrical layer device is an OTN electrical layer device, and the second electrical layer device is a PON electrical layer device.
[0078] In the embodiment of the present application, since the first device can receive the first downlink optical signal and the second downlink optical signal at the same time, there is no need to deploy a MUX on the user side. The first device can separate and process the first downlink signal, reducing the deployment cost. At the same time, the user side can combine the home broadband optical network unit (ONU) device and the CPE dedicated line of OTN into one, realizing mutual protection between the PON home broadband service and the OTN premium dedicated line.
[0079] Please refer to Figure 7 , in the uplink direction, a signal transmission method in the embodiment of the present application includes:
[0080] 701. The first device sends a first uplink signal;
[0081] As Figure 4As shown, the first electrical layer device of the first device sends the second data frame to the first optical module and configures the wavelength. The first optical module modulates the first uplink signal according to the second data frame and sends the first uplink signal to the optical splitter. At this time, the first uplink signal is the first uplink optical signal, and the first uplink optical signal includes the second data frame. In practical applications, since the first device can use smaller bandwidth particles in the uplink direction of the signal, the rate level of the second data frame is less than the rate level of the first data frame. For example, when the first data frame is an OTU2 frame, the second data frame can be an OTU1 frame or an OTU0 frame.
[0082] Take the second data frame as an OTU1 frame as an example. Figure 8 As shown, each second data frame includes 2 optical time slots, the bandwidth granularity of each optical time slot is 1.25G, and the rate of the first uplink signal is 2.5G. One of the optical time slots in the second data frame includes an uplink service, and the wavelengths of the first uplink signals configured by each first device on the user side are different, and each dedicated line service in the uplink direction has an exclusive wavelength.
[0083] like Figure 5 As shown, the first device also includes a second electrical layer device, which sends data to the first optical module and configures the wavelength. At this time, the first uplink signal includes a first uplink optical signal and a second uplink optical signal. The first uplink optical signal can be a DWDM single-wavelength signal, and the second uplink optical signal can be a PON signal, which is not specifically limited here.
[0084] 702. The second device receives a second uplink signal;
[0085] The second device receives the second uplink signal from the optical splitter, such as Figure 4 As shown, or the second device receives the second uplink signal from the FIU, such as Figure 5 The second uplink signal includes a plurality of first uplink optical signals of different wavelengths, such as Figure 8 As shown, the second device receives multiple second data frames. It should be understood that the first data frame is related to the port of the second device, and the second data frame is related to the port of the first device. For example, when the port of the first device is 2.5G, the second data frame is OTU1, and the rate is 2.5G. When the port of the second device is 10G, the first data frame is OTU2, and the rate is 10G. The second device receives 4 second data frames, which corresponds to 4 CPE devices. It can be understood that Figure 8 This is only an example, and in actual applications, the second device may receive more or less first uplink optical signals, which is not specifically limited here.
[0086] 703. The second device processes the second uplink signal.
[0087] The second device separates the second uplink signal into multiple first uplink optical signals with different wavelengths, and transfers each first uplink optical signal to the first electrical layer device for processing through the OTN channel corresponding to the wavelength. For example, the second uplink signal includes a second uplink optical signal and a third uplink optical signal. The second uplink optical signal is the first uplink optical signal at the first wavelength λ1, and the third uplink optical signal is the first uplink optical signal at the second wavelength λ2. The second device transfers the second uplink optical signal to the first electrical layer device for processing through the first channel, and transfers the third uplink optical signal to the first electrical layer device for processing through the second channel, where the first channel corresponds to λ1 and the second channel corresponds to λ2. The second device obtains the corresponding second data frame according to different channels, and obtains the corresponding uplink service from the second data frame.
[0088] The signal transmission method in the embodiments of the present application has been described above. Next, in combination with Figure 9 and Figure 10 the signal transmission device in the embodiments of the present application will be described. Specifically, Figure 9 the signal transmission device 900 shown in Figure 3 and Figure 7 is used to implement the steps performed by the first device described in Figure 9 . Referring to
[0089] A first optical module 901, configured to receive a first downlink signal. The first downlink signal includes a first data frame, and the first data frame includes multiple optical time slots, and each optical time slot includes at least one downlink service;
[0090] A first electrical layer device 902, configured to parse the first data frame to obtain the first downlink service corresponding to the signal transmission device.
[0091] Optionally, the first data frame includes a first optical time slot, the first optical time slot is the optical time slot corresponding to the signal transmission device, and the first downlink service is included in the first optical time slot;
[0092] The first electrical layer device 902 is specifically configured to parse the first optical time slot to obtain the first downlink service.
[0093] Optionally, the first downlink signal includes a first downlink optical signal and a second downlink optical signal, and the first data frame is included in the first downlink optical signal;
[0094] The first optical module 901 is further configured to separate the first downlink signal to obtain a first downlink optical signal and a second downlink optical signal.
[0095] Optionally, the signal transmission device further includes a second electrical layer device;
[0096] The first electrical layer device 902 is further configured to parse the first downlink optical signal;
[0097] The second electrical layer device 903 is used to analyze the second downlink optical signal.
[0098] Optionally, the first optical module 901 is further configured to send a first uplink signal, the first uplink signal includes a second data frame, the rate level of the second data frame is less than the rate level of the first data frame, and the second data frame includes at least one uplink service.
[0099] Optionally, the first uplink signal includes a first uplink optical signal and a second uplink optical signal, and the second data frame is included in the first uplink optical signal;
[0100] The first optical module 901 is further configured to combine the first uplink optical signal and the second uplink optical signal into a first uplink signal.
[0101] Specifically, Figure 10 The signal transmission device 1000 shown is used to implement Figure 3 and Figure 7 the steps performed by the second device described in. Please refer to Figure 10 In an embodiment of the signal transmission device 1000 in the embodiment of the present application, it includes:
[0102] The second optical module 1001 is used to modulate a first downlink optical signal, the first downlink optical signal includes a first data frame, the first data frame includes a plurality of optical time slots, and each optical time slot includes at least one downlink service;
[0103] The second optical module 1001 is further configured to send the first downlink optical signal.
[0104] Optionally, the second optical module 1001 is further configured to receive a second uplink signal, the second uplink signal includes a plurality of first uplink optical signals, the first uplink optical signal includes a second data frame, the rate level of the second data frame is less than the rate level of the first data frame, and each second data frame includes at least one uplink service.
[0105] Optionally, the wavelengths of the plurality of first uplink optical signals are different, the plurality of first uplink optical signals include at least a second uplink optical signal and a third uplink optical signal, the second uplink optical signal is the first uplink optical signal at the first wavelength, and the third uplink optical signal is the first uplink optical signal at the second wavelength:
[0106] The second optical module 1001 is further configured to separate the second uplink signal to obtain a second uplink optical signal and a third uplink optical signal;
[0107] The second optical module 1001 is further configured to process the second uplink optical signal through a first channel, and the first channel corresponds to the first wavelength;
[0108] The second optical module 1001 is further configured to process the third upstream optical signal through a second channel, and the second channel corresponds to a second wavelength.
[0109] An embodiment of the present application further provides a computer-readable storage medium, including instructions, which when running on a computer, cause the computer to execute the method in the foregoing embodiments.
[0110] An embodiment of the present application further provides a computer program product containing instructions, which when running on a computer, cause the computer to execute the method in the foregoing embodiments.
[0111] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.
[0112] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.
[0113] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0114] In addition, the functional units in various embodiments of the present application can be integrated in one processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
[0115] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM, read-only memory), random access memories (RAM, random access memory), magnetic disks, or optical discs.
[0116] In the above embodiments, it can be implemented in whole or in part through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, a computer, a server, or a data center to another website, a computer, a server, or a data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or a wireless manner (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or a data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a high-density digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.
Claims
1. A signal transmission device, characterized in that, Comprising: A first optical module for receiving a first downlink signal, the first downlink signal including a first data frame, the first data frame including a plurality of optical time slots, each of the optical time slots including at least one downlink service; A first electrical layer device for parsing the first data frame to obtain a first downlink service corresponding to the signal transmission device.
2. The signal transmission device according to claim 1, wherein The first data frame includes a first optical time slot, the first optical time slot being an optical time slot corresponding to the signal transmission device, and the first downlink service is included in the first optical time slot; The first electrical layer device is specifically configured to parse the first optical time slot to obtain the first downlink service.
3. The signal transmission device according to claim 1 or 2, characterized in that, The first downlink signal includes a first downlink optical signal and a second downlink optical signal, and the first data frame is included in the first downlink optical signal; The first optical module is further configured to separate the first downlink signal to obtain the first downlink optical signal and the second downlink optical signal.
4. The signal transmission device according to claim 3, wherein The signal transmission device further includes a second electrical layer device; The first electrical layer device is further configured to parse the first downlink optical signal; The second electrical layer device is configured to parse the second downlink optical signal.
5. The signal transmission device according to any one of claims 1 to 4, characterized in that The first optical module is further configured to send a first uplink signal, the first uplink signal including a second data frame, the rate level of the second data frame being less than the rate level of the first data frame, and the second data frame including at least one uplink service.
6. The signal transmission device according to claim 5, wherein The first uplink signal includes a first uplink optical signal and a second uplink optical signal, and the second data frame is included in the first uplink optical signal; The first optical module is further configured to combine the first uplink optical signal and the second uplink optical signal into the first uplink signal.
7. A signal transmission device, characterized in that, Comprising: A second optical module for modulating a first downlink optical signal, the first downlink optical signal including a first data frame, the first data frame including a plurality of optical time slots, each of the optical time slots including at least one downlink service; The second optical module is further configured to send the first downlink optical signal.
8. The signal transmission device according to claim 7, characterized in that, The second optical module is further configured to receive a second uplink signal, the second uplink signal including a plurality of first uplink optical signals, the first uplink optical signal including a second data frame, the rate level of the second data frame being less than the rate level of the first data frame, and each of the second data frames including at least one uplink service.
9. The signal transmission device according to claim 8, characterized in that, The wavelengths of the plurality of first uplink optical signals are different, the plurality of first uplink optical signals at least including a second uplink optical signal and a third uplink optical signal, the second uplink optical signal being a first uplink optical signal at a first wavelength, and the third uplink optical signal being a first uplink optical signal at a second wavelength: The second optical module is further configured to separate the second uplink signal to obtain the second uplink optical signal and the third uplink optical signal; The second optical module is further configured to process the second uplink optical signal through a first channel, the first channel corresponding to the first wavelength; The second optical module is further configured to process the third uplink optical signal through a second channel, the second channel corresponding to the second wavelength.
10. A signal transmission method, characterized in that, The method includes: The first device receives a first downlink signal, the first downlink signal includes a first data frame, the first data frame includes a plurality of optical time slots, and each of the optical time slots includes at least one downlink service; The first device parses the first data frame to obtain the first downlink service corresponding to the first device.
11. The signal transmission method according to claim 10, wherein The first data frame includes a first optical time slot, the first optical time slot is the optical time slot corresponding to the first device, and the first downlink service is included in the first optical time slot; The first device parses the first data frame to obtain the first downlink service corresponding to the first device, including: The first device parses the first optical time slot to obtain the first downlink service.
12. The signal transmission method according to claim 10 or 11, characterized in that, The first downlink signal includes a first downlink optical signal and a second downlink optical signal, the first data frame is included in the first downlink optical signal, and before the first device parses the first data frame to obtain the first downlink service corresponding to the first device, the method further includes: The first device separates the first downlink signal to obtain the first downlink optical signal and the second downlink optical signal.
13. The signal transmission method according to any one of claims 10 to 12, characterized in that, The method further includes: The first device sends a first uplink signal, the first uplink signal includes a second data frame, the rate level of the second data frame is less than the rate level of the first data frame, and the second data frame includes at least one uplink service.
14. The signal transmission method according to claim 13, wherein The first uplink signal includes a first uplink optical signal and a second uplink optical signal, the second data frame is included in the first uplink optical signal, and the method further includes: The first device combines the first uplink optical signal and the second uplink optical signal into the first uplink signal.
15. A signal transmission method, characterized in that, The method includes: A second device modulates a first downlink optical signal, the first downlink optical signal includes a first data frame, the first data frame includes a plurality of optical time slots, and each of the optical time slots includes at least one downlink service; The second device sends the first downlink optical signal.
16. The signal transmission method according to claim 15, wherein The method further includes: The second device receives a second uplink signal, the second uplink signal includes a plurality of first uplink optical signals, the first uplink optical signal includes a second data frame, the rate level of the second data frame is less than the rate level of the first data frame, and each of the second data frames includes at least one uplink service.
17. The signal transmission method according to claim 16, wherein The wavelengths of the plurality of first uplink optical signals are different, the plurality of first uplink optical signals at least include a second uplink optical signal and a third uplink optical signal, the second uplink optical signal is the first uplink optical signal at a first wavelength, and the third uplink optical signal is the first uplink optical signal at a second wavelength. The method further includes: The second device separates the second uplink signal to obtain the second uplink optical signal and the third uplink optical signal; The second device processes the second uplink optical signal through a first channel, and the first channel corresponds to the first wavelength; The second device processes the third uplink optical signal through a second channel, and the second channel corresponds to the second wavelength.
18. A signal transmission system, characterized in that, Including: An optical splitter, a signal transmission device according to any one of claims 1 to 6, and a signal transmission device according to any one of claims 7 to 9; The output end of the optical splitter is connected to a plurality of signal transmission devices as described in any one of claims 1 to 6, and the input end of the optical splitter is connected to a signal transmission device as described in any one of claims 7 to 9.
19. A signal transmission system, characterized in that, Comprising: An optical splitter, an optical fiber interface unit, a signal transmission device as described in any one of claims 1 to 6, and a signal transmission device as described in any one of claims 7 to 9; The input end of the optical splitter is connected to the output end of the optical fiber interface unit, the output end of the optical splitter is connected to a plurality of signal transmission devices as described in any one of claims 1 to 6, and the input end of the optical fiber interface unit is connected to a signal transmission device as described in any one of claims 7 to 9.
20. A computer-readable storage medium, comprising instructions that, when run on a computer, cause the computer to execute the method as described in any one of claims 10 to 14, or cause the computer to execute the method as described in any one of claims 15 to 17.