Service transmission method, system and device, storage medium and program product

Abstract

The present invention relates to a service transmission method, system and device, a storage medium and a program product. The service transmission system comprises access devices, the access devices being divided into a first access device and a plurality of second access devices. The first access device and the plurality of second access devices are successively connected by means of optical fibers to form a ring network topology. During a downlink service transmission process from the first access device to each second access device, the first access device uses a broadcast manner to perform service transmission; and during an uplink service transmission process from each second access device to the first access device, the second access device uses time division multiple access technology to perform service transmission. By means of the ring network topology-based time division multiple access transmission mode, the present invention can effectively save optical fiber resources, and improve the signal coverage range, thus achieving high-efficiency transmission of services.

Description

A service transmission method, system, device, storage medium, and program product

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410971349.3, filed on July 19, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to the field of optical transmission technology, and in particular to a service transmission method, system, device, storage medium, and program product. Background Technology

[0004] Currently, in areas with a high concentration of users, such as office buildings and corporate parks, due to limitations in fiber optic resources, a star network architecture is generally used for the segment connecting users to the operator's data center, as shown in Figure 1. This is a service transmission system with a star network architecture in the existing technology. It mainly saves on the backbone fiber between the operator's data center equipment (such as OLT equipment) and the fiber distribution point by sharing the backbone fiber between the operator's data center and the end user. At the fiber distribution point, the end user is then connected to the network via a point-to-point connection.

[0005] However, the inventors discovered that the existing technology has at least the following problems: In the existing star network architecture, the optical power is greatly reduced after the optical signal passes through the fiber splitting point, which will seriously affect the network coverage. Summary of the Invention

[0006] The purpose of this invention is to provide a service transmission method, system, device, storage medium, and program product. Based on a ring network topology, the time-division multiple access transmission mode can effectively save optical fiber resources, improve signal coverage, and achieve high-efficiency service transmission.

[0007] To achieve the above objectives, embodiments of the present invention provide a service transmission method applied to a service transmission system. The service transmission system includes access devices, which are divided into a first access device and several second access devices. The first access device and the several second access devices are sequentially connected via optical fibers to form a ring network topology. The service transmission method includes: during downlink service transmission from the first access device to each of the second access devices, the first access device uses a broadcast method for service transmission; during uplink service transmission from each of the second access devices to the first access device, the second access devices use time-division multiple access (TDMA) technology for service transmission.

[0008] This invention also provides a service transmission system, including access devices, which are divided into a first access device and a plurality of second access devices. The first access device and the plurality of second access devices are sequentially connected via optical fibers to form a ring network topology. During downlink service transmission from the first access device to each of the second access devices, the first access device uses a broadcast method for service transmission. During uplink service transmission from each of the second access devices to the first access device, the second access devices use time-division multiple access (TDMA) technology for service transmission.

[0009] This invention also provides a service transmission device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the aforementioned service transmission method.

[0010] This invention also provides a computer-readable storage medium, which includes a stored computer program. When the computer program runs, it controls the device containing the computer-readable storage medium to execute the aforementioned service transmission method.

[0011] This invention also provides a computer program product, which includes a computer program or computer instructions. When the computer program or computer instructions are executed by a processor, they implement the aforementioned service transmission method.

[0012] Compared with existing technologies, the service transmission method, system, device, storage medium and program product disclosed in this invention adopts a ring network topology service transmission system, which can save more optical fiber compared with the traditional point-to-multipoint star network structure. Furthermore, it uses improved time division multiple access transmission technology for bidirectional data transmission, which is more efficient in saving optical fiber resources and can effectively reduce the signal power loss caused by optical splitting, thereby achieving high-efficiency transmission of services. Attached Figure Description

[0013] Figure 1 shows the service transmission system of star network pricing in the prior art;

[0014] Figure 2 is a schematic diagram of the structure of the first service transmission system provided in an embodiment of the present invention;

[0015] Figure 3 is a flowchart illustrating a service transmission method provided in an embodiment of the present invention;

[0016] Figure 4 is a first structural schematic diagram of the access device in an embodiment of the present invention;

[0017] Figure 5 is a schematic diagram of the second structure of the access device in an embodiment of the present invention;

[0018] Figure 6 is a schematic diagram of the structure of the second service transmission system in an embodiment of the present invention;

[0019] Figure 7 is a schematic diagram of the structure of the third service transmission system in an embodiment of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] Referring to Figures 2 and 3, Figure 2 is a structural schematic diagram of the first service transmission system provided by an embodiment of the present invention, and Figure 3 is a flowchart of a service transmission method provided by an embodiment of the present invention. The present invention provides a service transmission system, which includes access devices, which are divided into a first access device and several second access devices; the first access device and several second access devices are sequentially connected by optical fibers to form a ring network topology.

[0025] This invention provides a service transmission method, which is applied to a service transmission system. The method includes operations S11 to S12:

[0026] S11. During the downlink service transmission from the first access device to each of the second access devices, the first access device uses a broadcast method for service transmission;

[0027] S12. During the uplink service transmission process from each second access device to the first access device, the second access device uses time division multiple access technology for service transmission.

[0028] It should be noted that the embodiments of the present invention are applicable to service carrying scenarios transmitted through optical fiber, such as transmission, IP, access and other fields. Taking the access network as an example, the first access device can be the operator's data center access device, and the second access device can be the user access device. The service transmission system of the embodiments of the present invention can realize service transmission between the operator's data center access device and the user access device.

[0029] In this embodiment of the invention, the service transmission system adopts a ring network topology. In this networking environment, compared with the traditional point-to-multipoint star network structure, this embodiment of the invention can save more optical fiber and use improved TDMA technology for bidirectional data transmission, which can effectively reduce the signal power loss caused by optical splitting.

[0030] Referring to Figures 4 and 5, Figure 4 is a schematic diagram of the first structure of the access device in an embodiment of the present invention, and Figure 5 is a schematic diagram of the second structure of the access device in an embodiment of the present invention. Each second access device is provided with an access device, and the second access device is connected to other access devices through the access device. The second access device forms a first transmission path and a second transmission path respectively through the conduction direction of the optical switch in the access device.

[0031] Specifically, the access equipment includes a splitter and an optical switch. The optical switch has two conduction directions, denoted as the first conduction direction and the second conduction direction, as shown in Figure 4. When the optical switch is in the first conduction direction, the first transmission path is open, and the second access device transmits uplink and downlink service data through the first transmission path and the first access device and / or other second access devices (westward connection). As shown in Figure 5, when the optical switch is in the second conduction direction, the second transmission path is open, and the second access device transmits uplink and downlink service data through the second transmission path and the first access device and / or other second access devices (eastward connection).

[0032] Before operations S11 and S12, the method also includes operation S10:

[0033] S10. By default, switch the optical switches in all access devices to the first conduction direction so that the first transmission path of all second access devices is activated.

[0034] In this embodiment of the invention, under normal circumstances, the optical switching direction of all second access devices is set to the first switching direction, thereby enabling the first access device and multiple second access devices in the service transmission system to form a consistent service transmission direction through optical fiber.

[0035] As an example, refer to Figure 6, which is a schematic diagram of the structure of the second type of service transmission system in this embodiment of the invention. Taking the first access device as the operator's data center access device and the second access device as the user access device as an example, the service transmission system includes the operator's data center access device, user access device 1, user access device 2, ..., user access device n. The access devices are connected by a single optical fiber to form a ring network structure. The optical switch in the access device corresponding to each user access device is in the first conduction direction, so that the operator's data center access device, user access device 1, user access device 2, ..., user access device n form a westward connected service transmission direction in sequence.

[0036] In some embodiments, operation S11, that is, during the downlink service transmission from the first access device to each of the second access devices, the first access device transmits services using a broadcast method, including:

[0037] S111. During downlink service transmission, the first access device broadcasts service data packets to all second access devices sequentially along the established transmission path; wherein the service data packets carry a message header containing the destination second access device identifier.

[0038] S112. After receiving the service data packet, each second access device parses the message header and extracts the corresponding service data packet.

[0039] Operation S12, that is, during the uplink service transmission from each second access device to the first access device, the second access device uses time division multiple access technology for service transmission, including:

[0040] S121. During the uplink service transmission process, the first second access device transmits the service data to the first access device according to the established transmission path at the corresponding preset transmission time; wherein, the first second access device is a second access device that is directly connected to the first access device through the first transmission path;

[0041] S122. The non-first second access device transmits the service data to the first access device through other preceding second access devices according to the established transmission path at the corresponding preset transmission time.

[0042] In this embodiment of the invention, taking the aforementioned service transmission system of operator access equipment, user access equipment 1, user access equipment 2, ..., user access equipment n as an example, in the downlink direction from the operator access equipment to each user access equipment, the operator access equipment uses a broadcast method and a downlink wavelength λ1 to transmit data packets to all user access equipment. Each packet carries a header with an identifier for the destination user access equipment. When a data packet arrives at a user access equipment, the user access equipment performs address resolution, extracts its own data packet, and discards the other data packets.

[0043] In the uplink direction from each user access device to the operator's data center access device, the user access device uses uplink wavelength λ2 to transmit services using Time Division Multiple Access (TDMA) technology. Each user access device is pre-allocated with a corresponding service transmission time. At time t1, user access device 1 transmits user 1's service data upwards, at time t2, user access device 2 transmits user 2's service data upwards, and so on.

[0044] In the specific uplink transmission process, at time t1, user access device 1 (i.e., the first second access device) sends λ2 to upload service data to the operator's data center access device. At time t2, user access device 2 sends λ2 to upload service data through user access device 1 to the operator's data center access device, and so on, until time t... n User access device n sends λ2, which transmits the service data through other user access devices 1 to n-1 to the operator's access device in the data center. In some embodiments, the optical splitter in the access device is an optical splitter with a splitting ratio of 20% / 80%, at time t. i User i sends λ2 at one time and does not send λ2 at other times.

[0045] Using the technical means of this invention, the service transmission system of this invention adopts a ring network topology, which can save more optical fiber compared with the traditional point-to-multipoint star network structure. Furthermore, it adopts improved time division multiple access transmission technology for bidirectional data transmission, which is more efficient and saves optical fiber resources. The downlink uses a suitable optical splitter with low insertion loss, which can improve the signal coverage range and effectively reduce the signal power loss caused by optical splitting, thereby achieving high-efficiency transmission of services.

[0046] In some embodiments, the method further includes operations S13 to S14:

[0047] S13. Determine whether there is a fault in the optical fiber between the first second access device and the first access device;

[0048] S14. When the optical fiber between the first second access device and the first access device fails, switch the optical switches in all access devices to the second conduction direction so that the second transmission path of all second access devices is connected.

[0049] In this embodiment of the invention, the service transmission system can also implement the function of protecting service data in a ring network topology. For example, taking the operator's data center access device and multiple user access devices in the above embodiment as an example, when the optical switches in the access devices of all user access devices are in the first conduction direction to form a westward connection service transmission path, when the optical fiber between user access device 1 and operator's data center access device fails, the optical switches in all access devices can be switched to the second conduction direction, thereby reversing the overall transmission path to another direction, that is, so that operator's data center access device, user access device n, user access device n-1, ..., user access device 1 form an eastward connection service transmission direction in sequence.

[0050] In some embodiments, operation S13, namely determining whether there is a fault in the optical fiber between the first second access device and the first access device, includes:

[0051] During downlink service transmission, if the first second access device does not receive the service data packet sent by the first access device within the preset detection period, it is determined that the optical fiber between the first second access device and the first access device has failed.

[0052] During uplink service transmission, if the first access device does not receive the service data sent by the first second access device at the transmission time corresponding to the first second access device, it is determined that the optical fiber between the first second access device and the first access device is faulty.

[0053] In some embodiments, during downlink service transmission, if user access device 1 detects no signal in the downlink direction within a certain period, it is considered that the optical fiber between the operator's data center access device and user access device 1 has failed. The service transmission direction is reversed from west to east by switching the conduction direction of the optical switches in each access device.

[0054] Similarly, during uplink service transmission, if the operator's access equipment detects no signal in the uplink direction of user access device 1 within a certain period, it is considered that there is a fiber optic fault between the operator's access equipment and user access device 1. The service transmission direction is reversed from west to east by switching the conduction direction of the optical switches in each access device.

[0055] In some embodiments, the method further includes operations S15 to S16:

[0056] S15. Determine whether there is a fault in the optical fiber between the non-first second access device and the previous second access device;

[0057] S16. When a fiber optic cable between a non-first second access device and the previous second access device fails, the optical switch of the access device corresponding to the non-first second access device and subsequent second access devices shall be switched to the second conduction direction.

[0058] In this embodiment of the invention, if the optical fiber between intermediate nodes fails, for example, if the optical fiber between user access device i and the previous user access device i-1 fails, the optical switching in the access device of user access device i and subsequent user access devices can be switched to the second conduction direction. This allows the service transmission path formed by the westward connection between the operator's data center access device and user access device i-1 to still be used for service transmission, while the service transmission path formed by the eastward connection between the operator's data center access device and user access device i is used for service transmission, thereby achieving service protection.

[0059] In some embodiments, operation S14, namely determining whether there is a fault in the optical fiber between a non-first second access device and a previous second access device, includes:

[0060] During downlink service transmission, if a non-first second access device does not receive service data packets sent by the first access device within a preset detection period, it is determined that the optical fiber between the non-first second access device and the previous second access device is faulty.

[0061] During uplink service transmission, if the first access device does not receive service data sent by the non-first second access device at the transmission time corresponding to the non-first second access device, it is determined that the optical fiber between the non-first second access device and the previous second access device is faulty.

[0062] In some embodiments, assuming that the optical fiber between user access device 1 and user access device 2 is interrupted (westward connection), during downlink service transmission, user access device 1 can normally receive data packets sent by the operator's access equipment in the data center, while user access device 2 detects no signal in the downlink direction within a certain period. Then, by switching the conduction direction of the optical switches in the access devices of user access device 2 and subsequent user access devices 3, ..., user access device n, the service transmission direction is reversed from westward to eastward.

[0063] During the uplink service transmission process, if the operator's access equipment can receive the service data sent by user access device 1 at time t1, but cannot receive the signal sent by user access device 2 at time t2, the service transmission direction is reversed from west to east by switching the conduction direction of the optical switches in the access devices of user access device 2 and subsequent user access devices 3, ..., user access device n.

[0064] In this way, the access equipment in the operator's access room and user access equipment 1 receive and transmit through the optical fiber between them in a normal westward connection transmission path. At time t2 and other times, the access equipment in the operator's access room and user access equipment 2, 3...n receive and transmit through the optical fiber between user access equipment 2-user access equipment 3-...user access equipment n-the access equipment in the operator's access room in an eastward connection transmission path.

[0065] The present invention employs a ring network topology service transmission system, which, compared to the traditional point-to-multipoint star network structure, saves more optical fiber. It utilizes improved time-division multiple access (TDMA) transmission technology for bidirectional data transmission, resulting in more efficient and resource-saving fiber optic connections. Downlink transmission uses suitable optical splitters with low insertion loss, improving signal coverage and effectively reducing power loss due to splitting. Furthermore, the ring network topology enables ring-based service protection; each second access device has eastbound and westbound connections to the first access device. If a connection in one direction is interrupted, service transmission can be switched to the other direction, ultimately achieving highly reliable and efficient service transmission.

[0066] In some embodiments, the service transmission system adopts a single-fiber bidirectional ring network transmission method or a dual-fiber bidirectional ring network transmission method.

[0067] In this embodiment of the invention, as shown in Figure 6, the service transmission system can be applied to a single-fiber bidirectional ring network transmission mode. Of course, referring to Figure 7, which is a schematic diagram of the third type of service transmission system in this embodiment, the service transmission system can also be extended to a dual-fiber bidirectional ring network transmission mode, i.e., requiring two optical fibers. One optical fiber is used for downlink signal transmission, sending the downlink signal from the first access device to each of the second access devices; the other optical fiber is used for uplink signal transmission, sending the uplink signal from each of the second access devices to the first access device. Understandably, the protection method in the event of an optical fiber failure is the same as that of the single-fiber bidirectional system.

[0068] This invention also provides a service transmission system, including access devices, which are divided into a first access device and a plurality of second access devices; the first access device and the plurality of second access devices are sequentially connected by optical fibers to form a ring network topology.

[0069] During downlink service transmission from the first access device to each of the second access devices, the first access device uses broadcast mode for service transmission; during uplink service transmission from each of the second access devices to the first access device, the second access devices use time division multiple access technology for service transmission.

[0070] It should be noted that the service transmission system provided in this embodiment of the invention is used to execute all process operations of the service transmission method of the above embodiment. The working principles and beneficial effects of the two are one-to-one, so they will not be described again.

[0071] This invention also provides a service transmission device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the service transmission method as described in any of the above embodiments.

[0072] It should be noted that the service transmission device provided in this embodiment of the invention is used to execute all process operations of the service transmission method of the above embodiment. The working principles and beneficial effects of the two are one-to-one, so they will not be described again.

[0073] This invention also provides a computer-readable storage medium, which includes a stored computer program, wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute the service transmission method as described in any of the above embodiments.

[0074] This invention also provides a computer program product, which includes a computer program or computer instructions. When the computer program or computer instructions are executed by a processor, they implement the service transmission method as described in any of the above embodiments.

[0075] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0076] The above are some embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method of service transmission, wherein, The application is applied to a service transmission system, which comprises an access device, the access device is divided into a first access device and a plurality of second access devices; the first access device and the plurality of second access devices are sequentially connected by optical fibers to form a ring network topology; The method comprises: In the process of downstream service transmission from the first access device to each second access device, the first access device adopts a broadcast mode for service transmission; In the process of upstream service transmission from each second access device to the first access device, the second access device adopts a time division multiple access technology for service transmission.

2. The service transmission method of claim 1, wherein, Each second access device is provided with an access device, the second access device is connected with other access devices through the access device, and the second access device forms a first transmission path and a second transmission path through the conduction direction of an optical switch in the access device.

3. The service transmission method of claim 2, wherein, The method further comprises: By default, the optical switch in all the access devices is switched to a first conduction direction, so that the first transmission path of all the second access devices is conducted.

4. The service transmission method of claim 3, wherein, In the process of downstream service transmission from the first access device to each second access device, the first access device adopts a broadcast mode for service transmission, which comprises: In the process of downstream service transmission, the first access device transmits service data packets to all the second access devices in a broadcast mode according to the conducted transmission path; wherein the service data packets carry a message header of a destination second access device identifier; After each second access device receives the service data packets, the corresponding service data packets are extracted according to the message header.

5. The service transmission method of claim 4, wherein, In the process of upstream service transmission from each second access device to the first access device, the second access device adopts a time division multiple access technology for service transmission, which comprises: In the process of upstream service transmission, a first second access device transmits service data to the first access device at a preset transmission time according to the conducted transmission path; wherein the first second access device is a second access device directly connected with the first access device through the first transmission path; A non-first second access device transmits service data to the first access device through other second access devices in front at a preset transmission time according to the conducted transmission path.

6. The service transmission method of claim 5, wherein, The method further comprises: Judging whether the optical fiber between the first second access device and the first access device is faulty; When the optical fiber between the first second access device and the first access device is faulty, the optical switch in all the access devices is switched to a second conduction direction, so that the second transmission path of all the second access devices is conducted.

7. The service transmission method of claim 5, wherein, The method further comprises: Judging whether the optical fiber between a non-first second access device and a previous second access device is faulty; When a fiber between a non-first second access device and a previous second access device fails, the optical switch of the access device corresponding to the non-first second access device and the second access device after the non-first second access device is switched to a second conducting direction.

8. The service transmission method of claim 6, wherein, The method further includes: In the downstream service transmission process, when the first access device does not receive the service data packet issued by the first access device within a preset detection period, it is determined that the fiber between the first access device and the first second access device fails. In the upstream service transmission process, when the first access device does not receive the service data sent by the first second access device at a transmission time corresponding to the first second access device, it is determined that the fiber between the first access device and the first second access device fails.

9. The service transmission method of claim 7, wherein, The method further includes: In the downstream service transmission process, when the first access device does not receive the service data packet issued by the first access device within a preset detection period, it is determined that the fiber between the first access device and the first second access device fails. In the upstream service transmission process, when the first access device does not receive the service data sent by the first second access device at a transmission time corresponding to the first second access device, it is determined that the fiber between the first access device and the first second access device fails.

10. The service transmission method according to any one of claims 1 to 9, wherein, The service transmission system adopts a single-fiber bidirectional ring network transmission mode or a double-fiber bidirectional ring network transmission mode.

11. A service transmission system, wherein, The access devices include a first access device and a plurality of second access devices, and the first access device and the plurality of second access devices are sequentially connected by optical fibers to form a ring network topology. In the downstream service transmission process from the first access device to each second access device, the first access device adopts a broadcast mode for service transmission; and in the upstream service transmission process from each second access device to the first access device, the second access device adopts a time division multiple access technology for service transmission.

12. A service transmission apparatus, wherein, The computer program is configured to be executed by the processor, and the processor executes the computer program to implement the service transmission method.

13. A computer readable storage medium, wherein, The computer readable storage medium includes a stored computer program, wherein the computer readable storage medium controls a device to execute the service transmission method when the computer program is executed.

14. A computer program product, wherein, The computer program product includes a computer program or computer instructions, and the computer program or the computer instructions are executed by the processor to implement the service transmission method.

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