Photoelectric hybrid satellite network, communication method, device, equipment and storage medium

Abstract

The invention relates to the technical field of wireless communication, and provides a photoelectric hybrid satellite network, a communication method, a communication device, communication equipment and a storage medium, and the network comprises a first-class satellite node which is provided with a first router and first optical transport network equipment and is used for providing access of a first-class service, transmitting the first type of service based on the first router or the first optical transport network device; and the second-class satellite node is provided with a second router and is used for providing access of a second-class service and transmitting the second-class service based on the second router. According to the embodiment of the invention, the cost of end-to-end physical isolation communication in the photoelectric hybrid satellite network can be reduced.

Description

Technical Field

[0001] This specification relates to the field of wireless communication technology, and in particular to an optoelectronic hybrid satellite network and communication methods, devices, equipment, and storage media. Background Art

[0002] Satellite internet can provide different types of services to different users. To ensure the security of certain services, they must be physically isolated from other services. In scenarios where satellite internet is based on optoelectronic hybrid satellite networks, achieving low-cost end-to-end physically isolated communications within these networks has become a pressing technical challenge. Summary of the Invention

[0003] The purpose of the embodiments of this specification is to provide an optoelectronic hybrid satellite network and communication method, apparatus, device and storage medium to reduce the cost of end-to-end physically isolated communication in an optoelectronic hybrid satellite network.

[0004] To achieve the above objectives, on the one hand, embodiments of this specification provide an optoelectronic hybrid satellite network, which includes:

[0005] A first-class satellite node having a first router and a first optical transport network device, configured to provide access to a first-class service and transmit the first-class service based on the first router or the first optical transport network device;

[0006] The second type satellite node has a second router, which is used to provide access to the second type of service and transmit the second type of service based on the second router.

[0007] In the optoelectronic hybrid satellite network of the embodiment of this specification, the optoelectronic hybrid satellite network further includes:

[0008] A third type of satellite node having a third router and a second optical transport network device is used to provide access to a second type of service, transmit the second type of service based on the third router or the second optical transport network device, or transmit the first type of service based on the second optical transport network device.

[0009] In the optoelectronic hybrid satellite network of the embodiment of this specification, the resource allocation requirement of the first type of service is lower than the resource allocation requirement of the second type of service, and the service density of the first type of service is lower than the service density of the second type of service.

[0010] In the optoelectronic hybrid satellite network of the embodiment of this specification, the first optical transport network device includes a first optical wavelength switching module and a first time-division circuit switching module; the second optical transport network device includes a second optical wavelength switching module and a second time-division circuit switching module.

[0011] In the optoelectronic hybrid satellite network of the embodiment of this specification, the first type of satellite node transmits the first type of service based on the first optical transport network device, including:

[0012] The first type of satellite node transmits the first type of service based on the first optical wavelength switching module in the first optical transport network device; or the first type of satellite node transmits the first type of service based on the first time division circuit switching module in the first optical transport network device;

[0013] The third-category satellite node transmits the second-category service based on the second optical transport network device, including:

[0014] The third type of satellite node transmits the second type of service based on the second optical wavelength switching module in the second optical transport network device; or, the third type of satellite node transmits the second type of service based on the second time division circuit switching module in the second optical transport network device.

[0015] In the optoelectronic hybrid satellite network of the embodiment of this specification, the third type of satellite node transmits the first type of service based on the second optical transport network device, including:

[0016] The third type of satellite node transmits the first type of service based on the second optical wavelength switching module in the second optical transport network device.

[0017] In the optoelectronic hybrid satellite network of the embodiment of this specification, the satellite node set of the network forms a first two-dimensional topological structure, and the first type of satellite node set of the network forms a second two-dimensional topological structure.

[0018] In the optoelectronic hybrid satellite network of the embodiment of this specification, the first two-dimensional topology structure includes a two-dimensional torus topology; the second two-dimensional topology structure includes a sparse two-dimensional torus topology.

[0019] On the other hand, an embodiment of this specification further provides a communication method, wherein the method is applied to the first type of satellite node of the above-mentioned optoelectronic hybrid satellite network, and the method includes:

[0020] receiving a first type of service from a source;

[0021] The first type of service is transmitted to a target satellite node via a first type of satellite node in the optoelectronic hybrid satellite network, so that the target satellite node transmits the first type of service to a destination.

[0022] In the communication method of the embodiment of this specification, receiving the first type of service from the information source includes:

[0023] A client signal containing first-category service data is received from a signal source.

[0024] In the communication method of the embodiment of this specification, after receiving the first type of service, the method further includes:

[0025] Encapsulating the client signal into an optical channel payload unit frame;

[0026] Mapping the optical channel payload unit frame into a laser carrier signal of a corresponding wavelength;

[0027] A wavelength division multiplexed signal including the laser carrier signal is generated.

[0028] In the communication method of the embodiment of this specification, transmitting the first type of service to the target satellite node via the first type of satellite node of the optoelectronic hybrid network includes:

[0029] The wavelength division multiplexing signal is transmitted to the target satellite node via the first type of satellite node of the optoelectronic hybrid network.

[0030] In the communication method of the embodiments of this specification, the information source includes a terminal and / or a gateway; the information sink includes a terminal and / or a gateway.

[0031] On the other hand, an embodiment of this specification further provides a communication device, wherein the device includes:

[0032] A receiving module, configured to receive a first type of service from a signal source;

[0033] The transmission module is used to transmit the first type of service to the target satellite node via the first type of satellite node of the above-mentioned optoelectronic hybrid satellite network, so that the target satellite node transmits the first type of service to the destination.

[0034] On the other hand, an embodiment of the present application further provides a network device, comprising:

[0035] at least one processor; and

[0036] At least one memory stores instructions thereon, and when the instructions are executed individually or collectively by the at least one processor, the network device executes the above method.

[0037] On the other hand, an embodiment of the present application further provides a computer storage medium storing instructions thereon, wherein the instructions, when executed individually or collectively by at least one processor of a computer device, cause the computer device to perform the above method.

[0038] On the other hand, an embodiment of the present application further provides a computer program product, comprising instructions, wherein when the instructions are executed individually or collectively by at least one processor of a computer device, the computer device executes the above method.

[0039] On the other hand, an embodiment of the present application further provides a chip, wherein the chip includes a circuit system, and the circuit system is configured to execute the above method.

[0040] It can be seen from the technical solutions provided in the above embodiments of this specification that, compared with the existing equipment isolation, the first-class satellite nodes in the embodiments of this specification are dedicated to the access and transmission of the first-class services, which is equivalent to opening an end-to-end network dedicated line for the first-class services, thereby realizing end-to-end physically isolated communication of the first-class services; and the first-class satellite nodes can use the wavelength division multiplexing-based optical wavelength switching of their optical transport network equipment to conveniently realize end-to-end physically isolated communication between different first-class services, avoiding the deployment of separate routing and switching equipment for different first-class services in each satellite node of the optoelectronic hybrid satellite network as in the prior art (for example, when there are three different first-class services, three sets of routing and switching equipment need to be deployed in each satellite node), thereby effectively saving the space and energy consumption of the satellite, reducing the weight of the satellite, and thus reducing the implementation cost of end-to-end physically isolated communication of the first-class services. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0042] Figure 1 A schematic diagram showing an optoelectronic hybrid satellite network in some embodiments of the present specification is shown;

[0043] Figure 2 A schematic diagram showing the transmission of the first type of service in an optoelectronic hybrid satellite network in some embodiments of this specification is shown;

[0044] Figure 3 A schematic diagram showing the transmission of a first type of service on a first type of satellite node in some embodiments of this specification is shown;

[0045] Figure 4 A schematic diagram showing the transmission of the first type of service on the third type of satellite node in some embodiments of this specification is shown;

[0046] Figure 5 A schematic diagram showing the transmission of the second type of service in an optoelectronic hybrid satellite network in some embodiments of this specification is shown;

[0047] Figure 6 A schematic diagram showing the transmission of the second type of service in an optoelectronic hybrid satellite network in some other embodiments of this specification is shown;

[0048] Figure 7 A flow chart showing a communication method in some embodiments of this specification;

[0049] Figure 8 A flowchart showing a communication method in some other embodiments of this specification is shown;

[0050] Figure 9 A structural block diagram of a network device in some embodiments of the present application is shown.

[0051] [Description of Reference Numerals]

[0052] 10. First-class satellite nodes;

[0053] 20. Second type of satellite node;

[0054] 30. The third type of satellite node;

[0055] 41. Satellite base station;

[0056] 42. Router;

[0057] 43. Time-division circuit switching module;

[0058] 44. Optical wavelength switching module;

[0059] 50. Source;

[0060] 60. Xinsu;

[0061] 900: network equipment;

[0062] 910: processor;

[0063] 920: memory;

[0064] 930: Procedure;

[0065] 940: transceiver;

[0066] 950: Antenna. DETAILED DESCRIPTION

[0067] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0068] It should be noted that in the embodiments of the present application, the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved are all information and data authorized and agreed by the user and fully authorized by all parties, that is, the acquisition, transmission, storage, use, and processing of data in the technical solution of this application comply with the relevant provisions of national laws and regulations.

[0069] In the description of this application, unless otherwise specified, "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of this disclosure, unless otherwise specified, "multiple" means two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0070] In this application, expressions such as "greater than" or "less than" may be used to determine whether a specific condition is met. However, this is merely an example and is not intended to exclude conditions that are greater than or less than. Conditions described as "greater than" can be replaced with "greater than," conditions described as "less than" can be replaced with "less than," and conditions described as "greater than and less than" can be replaced with "greater than and less than." Furthermore, "A" to "B" below refers to at least one of the elements from A (inclusive) to B (inclusive).

[0071] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0072] This application provides method operation steps as described in the embodiments or flowcharts, but may include more or fewer operation steps based on routine or non-creative work. The order of steps listed in the embodiments is only one way of executing the steps among many steps and does not represent the only execution order. When the actual system or device product is executed, it can be executed in the order or in parallel according to the method shown in the embodiments or the drawings.

[0073] It should be noted that in the embodiments of the present application, certain software, components, models and other existing solutions in the industry may be mentioned. They should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0074] This application uses terms used in some communication standards (such as 3GPP, European Telecommunications Standards Institute (ETSI), Extensible Radio Access Network (ERAN), and Open-Radio Access Network (O-RAN)) to describe various embodiments. However, this is merely an example for description. The various embodiments of the present application can also be easily modified and applied in other communication systems.

[0075] In an embodiment of the present application, communication between devices in a communication system may be performed according to a communication protocol of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), etc., and / or other communication protocols currently known or to be developed in the future.

[0076] To facilitate understanding, the technical terms involved in the embodiments of this application are explained below.

[0077] (1) Terminal Device: refers to a device that has wireless transceiver capabilities and can work with network-side equipment to provide communication services to users. Terminal devices may also be called Terminal, User Equipment (UE), User Terminal, Mobile Terminal (MT), or User Agent. For example, the terminal device may be a mobile phone, a tablet computer, a laptop computer, a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless communication device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, an Internet of Things (IoT) device, a narrowband Internet of Things (NB-IoT) device, a vehicle-to-everything (V2X) device, a device in device-to-device communication (D2D), an enhanced machine type communication (eMTC) device, a reduced capability device (REDUCED) device, or a wireless terminal in smart city. Capability, RedCap), cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), clients, handheld devices with wireless communication capabilities, vehicle-mounted devices or ship-mounted devices, etc.

[0078] In scenarios such as the Internet of Things, terminal devices can also be machines or devices for monitoring or measurement, including but not limited to: Machine Type Communication (MTC) terminals, vehicle-mounted communication terminals, device-to-device terminals, Machine-to-Machine (M2M) terminals, etc.

[0079] (2) Network equipment: refers to network-side equipment that can communicate with terminal equipment. Network equipment can be located on a satellite or on the ground. Network equipment may also be referred to as a space base station, satellite-borne base station, satellite, satellite communication node, satellite network terminal equipment, satellite communication module, or base station. This network-side equipment may also be referred to as access network equipment or wireless access network equipment. The network side device may be a base station (BTS) in a Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system carried by satellite, a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system carried by satellite, an evolved NodeB (eNB or eNodeB) in an LTE system carried by satellite, a base station in a terrestrial network or non-terrestrial network (NTN), such as a base station (gNB) in a 5G network carried by satellite, a base station in a future network after the 5G network (such as a 6G network) carried by satellite, a base station in a future evolved Public Land Mobile Network (PLMN) network carried by satellite, a Transmission Reception Point (TRP) carried by satellite, or a Cloud Radio Access Network (CRA) carried by satellite. A base station can also be a ground-based base station capable of communicating with satellites. It can also be referred to as an access point (AP), a 5G node (5th generation node), a wireless point (wireless point), or a transmission / reception point (TRP). Network equipment can also include base stations carried by high-altitude platform stations (HAPS) with airborne capabilities, such as large balloons and airships, base stations in roadside units (RSUs), or base stations in connected vehicles.

[0080] Both the terminal device and the base station device can perform beamforming, but the embodiments of the present application are not limited to this. In some embodiments, the terminal may or may not perform beamforming. Furthermore, the base station may or may not perform beamforming. That is, only one of the terminal and the base station may perform beamforming, or neither the terminal nor the base station may perform beamforming. In this application, a beam refers to the spatial flow of a signal in a wireless channel, which is formed by one or more antennas or antenna elements. This formation process may be referred to as beamforming.

[0081] In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "terminal side" or "terminal device" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above.

[0082] Satellite Internet can provide different types of services to different users. For example, it can provide general services to the general public and special services to special users. In order to ensure the security of special services, special services need to be physically isolated. In traditional physical isolation, satellite Internet needs to allocate a dedicated line for special services in the same network to achieve end-to-end physical isolation from general services. That is, it provides an end-to-end path for special services that does not share the electrical domain physical channel with general services. In the point-to-point transmission segment, transmission physical isolation can be achieved through wavelength division multiplexing (WDM) technology. However, at the node exchange, IP packet switching, electrical domain time-division circuit switching of the optical transport network (OTN), and time-division circuit switching of the slicing packet network (SPN) cannot meet the physical isolation requirements, and a new node switching architecture needs to be designed. Therefore, to achieve end-to-end physical isolation, the existing technologies mainly have the following two methods:

[0083] (1) Equipment isolation: Deploy multiple sets of routing and switching equipment on the same satellite platform (i.e., deploy separate routing and switching equipment for different special services in each satellite node). Ordinary services and special services that arrive at the node ingress port through different wavelengths are demultiplexed in the optical domain and then routed and switched in the electrical domain through different devices.

[0084] Device isolation is easy to implement, but it occupies a significant amount of satellite platform space, consumes significant energy, and is costly to implement. Furthermore, physical isolation between multiple services requires additional routing and switching equipment, making this approach less scalable.

[0085] (2) Wavelength isolation: Add an optical wavelength switching function module based on the SPN / gray light OTN routing and switching equipment. Ordinary services and special services are isolated and exchanged on demand in the optical domain in the wavelength switching equipment.

[0086] Wavelength isolation eliminates the need for multiple sets of routing and switching equipment at intermediate nodes, avoiding the exponential consumption of space and energy resources. It is relatively cost-effective and can expand isolation channels by increasing the number of wavelengths without requiring hardware upgrades. However, this method only isolates services on the transmission line side, not on the access side; it is not a true end-to-end physical isolation solution.

[0087] In view of this, in order to reduce the cost of end-to-end physically isolated communication in an optoelectronic hybrid satellite network and improve the scalability of end-to-end physically isolated communication in an optoelectronic hybrid satellite network, the embodiments of this specification provide an improved optoelectronic hybrid satellite network.

[0088] Figure 1 An optoelectronic hybrid satellite network according to some embodiments of the present specification is shown. The optoelectronic hybrid satellite network may include a first type of satellite node 10 and a second type of satellite node 20 .

[0089] refer to Figure 1 As shown, the first-class satellite node 10 includes an onboard base station 41, a router 42, and OTN equipment (including an optical wavelength switching module 44). The first-class satellite node 10 provides access to first-class services (including both receiving and transmitting access) and transmits these services via its router 42 or OTN equipment. Thus, the first-class satellite node 10 effectively provides an end-to-end dedicated network line for the first-class services. In some embodiments of this specification, the first-class services are satellite services with relatively high security requirements, requiring end-to-end physically isolated communications. These services are typically specialized services for special users or scenarios (e.g., maritime, aviation, and emergency rescue services).

[0090] refer to Figure 1 As shown, the second-category satellite node 20 includes an onboard base station 41 and a router 42. The second-category satellite node 20 can be used to provide access to the second-category service and transmit the second-category service based on its router 42. In some embodiments of this specification, the second-category service is a satellite service with relatively low security requirements that does not require physical isolation or end-to-end physical isolation. It is generally a common service for general users (such as satellite broadcasting, satellite television, civilian satellite calls, civilian satellite navigation, etc.).

[0091] Compared with the existing equipment isolation, the first type of satellite node in the embodiment of this specification is dedicated to the access and transmission of special services, which is equivalent to opening an end-to-end network dedicated line for special services, thereby realizing end-to-end physical isolation communication of special services; and the first type of satellite node can use the wavelength division multiplexing-based optical wavelength switching of its OTN equipment to conveniently realize end-to-end physical isolation communication between different special services, thereby avoiding the deployment of separate routing and switching equipment for different special services in each satellite node of the optoelectronic hybrid satellite network as in the prior art (for example, when there are three different special services, three sets of routing and switching equipment need to be deployed in each satellite node), effectively saving satellite space and energy consumption, reducing satellite weight, and thus reducing the implementation cost of end-to-end physical isolation communication of special services.

[0092] In addition, since the first type of satellite nodes are equipped with OTN equipment, there is no need to add new routing and switching equipment when adding new special business types (that is, there is no need to add new routers or OTN equipment), which also improves the expansion capability of the optoelectronic hybrid satellite network for special services.

[0093] refer to Figure 1 As shown, in some other embodiments of this specification, in addition to the first-type satellite nodes 10 and the second-type satellite nodes 20, the optoelectronic hybrid satellite network may also include a third-type satellite node 30. The third-type satellite node 30 includes an onboard base station 41, a router 42, and an OTN device. The third-type satellite node 30 is used to provide access to second-type services (e.g., general services) and transmit the second-type services (e.g., general services) based on its router 42 or OTN device. In other words, the third-type satellite node 30 can be used for both specialized services and general services, that is, the third-type satellite node 30 can be used for both relay transmission of specialized services and access and relay transmission of general services. In this way, when the processing pressure of specialized services is high, the combination of the first-type satellite node and the third-type satellite node can alleviate or reduce the relay transmission processing pressure of the specialized services. When the processing pressure of general services is high, the combination of the second-type satellite node and the third-type satellite node can alleviate or reduce the access and relay transmission processing pressure of general services. Therefore, by deploying a portion of the third-type satellite nodes 30 in the optoelectronic hybrid satellite network, the availability and flexibility of the network can be improved.

[0094] Combine Figure 1 As shown, in some embodiments of this specification, the router 42 can implement packet switching, and the OTN device can include a time-division circuit switching module 43 and an optical wavelength switching module 44. The time-division circuit switching module 43 can implement time-division circuit switching, and the optical wavelength switching module 44 can implement optical wavelength switching. Specifically, the optical wavelength switching module 44 can implement optical wavelength switching based on wavelength division multiplexing.

[0095] In some embodiments of the present specification, since the resource allocation requirements (such as bandwidth requirements, etc.) and business density of special services are much lower than those of ordinary services, and multiple coverage is generally not required, not all satellite nodes in the optoelectronic hybrid satellite network need to be deployed with optical switching functions; the optical switching capability can be enabled in a small number of nodes in the entire network (first-class satellite nodes and third-class satellite nodes) to build a corresponding optical backbone network, and at the same time, wavelength division multiplexing technology can be used to achieve support for multiple wavelengths throughout the network, thereby achieving the construction of a high-security network with physical isolation based on wavelengths. In this way, the security isolation requirements of special services can be met, and the utilization rate of satellite resources can be improved.

[0096] In some embodiments of this specification, all satellite nodes (first-category satellite nodes, second-category satellite nodes, and third-category satellite nodes) in an optoelectronic hybrid satellite network can form a two-dimensional topology. Furthermore, all first-category satellite nodes in the optoelectronic hybrid satellite network can form a more sparse two-dimensional topology. This reduces satellite node deployment costs, simplifies and improves inter-satellite routing, and reduces network latency.

[0097] For example, Figure 1 Taking the optoelectronic hybrid satellite network shown as an example, all satellite nodes (first-type satellite nodes 10, second-type satellite nodes 20, and third-type satellite nodes 30) of the optoelectronic hybrid satellite network form a two-dimensional torus topology (2D-Torus topology); correspondingly, all first-type satellite nodes 10 of the optoelectronic hybrid satellite network form a more sparse 2D-Torus topology. It should be understood that Figure 1 The satellite nodes shown in the figure only schematically represent the optoelectronic hybrid satellite network. In actual implementation, the optoelectronic hybrid satellite network may have more or fewer satellite nodes as needed.

[0098] refer to Figure 2 As shown, in some embodiments of this specification, since the satellite access node for the first-class service is the first-class satellite node 10, when the signal source 50 initiates the first service, it needs to access the network through the first-class satellite node 10 (i.e., the signal source 50 selects a first-class satellite node 10 as the source satellite node); when the signal sink 60 receives the first service, it also needs to access the network through the first-class satellite node 10 (i.e., the signal sink 60 selects another first-class satellite node 10 as the target satellite node). During the transmission of the first-class service in the optoelectronic hybrid satellite network, the relay satellite node can be the third-class satellite node 30 and / or the first-class satellite node 10; however, the second-class satellite node 20 cannot serve as a relay satellite node for the first-class service to avoid affecting the service security of the dedicated service.

[0099] In some embodiments of this specification, the signal source 50 may include a terminal and / or a gateway; the signal destination 60 may also include a terminal and / or a gateway. Terminals may be terrestrial terminals (e.g., ground vehicles, portable electronic devices, etc.) and / or non-terrestrial terminals (e.g., aircraft, etc.). A gateway is a data center node in an optoelectronic hybrid satellite network, responsible for distributing and collecting satellite communication service data, enabling internal data exchange and external data routing. In short, a gateway serves as a bridge connecting the satellite network and the terrestrial public network.

[0100] Combine Figure 3 As shown, in some embodiments of the present specification, since the first-class satellite node 10 is dedicated to the access and relay of the first-class service, when the first-class satellite node 10 serves as the access node or relay node of the first-class service, the first-class satellite node 10 can transmit the first-class service based on its router 42, or can transmit the first-class service based on the optical wavelength switching module 44 in its OTN device; it can also transmit the first-class service based on the time division circuit switching module 43 in its OTN device, thereby achieving physical isolation of the first-class service. When there are multiple first-class services, the physical isolation between different first-class services can still be guaranteed through the WDM multiplexing function of the OTN device.

[0101] Combine Figure 4 As shown, in some embodiments of the present specification, when the third-type satellite node 30 serves as a relay node for the first-type service, the third-type satellite node 30 can transmit the first-type service based on the optical wavelength switching module 44 in its OTN equipment. Because the third-type satellite node 30 can also serve as an access node and relay node for the second-type service, to ensure the security of the first-type service, when the third-type satellite node 30 forwards the first-type service, it can only be forwarded to the next relay node through its optical wavelength switching module 44. That is, on the third-type satellite node 30 side, the first-type service cannot be resolved and sent to the time-division circuit switching module 43 of its OTN equipment, nor can it be resolved and sent to its router 42.

[0102] In some embodiments of this specification, third-category satellite nodes can be used for access and relay of second-category services, and second-category satellite nodes can also be used for access and relay of second-category services. Because second-category services do not require physical isolation, there are no restrictions on the routing and switching equipment used by third-category and second-category satellite nodes during the transmission of first-category services. This allows for greater network flexibility in accessing and transmitting second-category services. Of course, to ensure the security of first-category services, first-category satellite nodes should not be used as access or relay nodes for second-category services.

[0103] For example, reference Figure 5As shown, in some embodiments of the present specification, the third type satellite node 30 serves as the source satellite node of the second type of service, can receive the second type of service from the signal source 50, and forward the second type of service to the next relay satellite node (for example, Figure 5 Another third type satellite node 30 in the satellite node); the second type satellite node 20 serves as the destination satellite node for the second type of service. After receiving the second type of service forwarded by the relay satellite node, it can send it to the sink 60 through the satellite-to-ground link.

[0104] For example, reference Figure 6 As shown, in other embodiments of the present specification, the second type satellite node 20 serves as a source satellite node for the second type of service, can receive the second type of service from the signal source 50, and forward the second type of service to the next relay satellite node (e.g., Figure 6 Another second-type satellite node 20 in the satellite node); the third-type satellite node 30 serves as the destination satellite node for the second-type service. After receiving the second-type service forwarded by the relay satellite node, it can send it to the sink 60 through the satellite-to-ground link.

[0105] The embodiment of this specification provides a communication method that can be applied to the first type of satellite node side of the above-mentioned optoelectronic hybrid satellite network, referring to Figure 7 As shown, in some embodiments of this specification, the communication method may include the following steps:

[0106] Step 701: Receive a first type of service from a source;

[0107] Step 702: Transmit the first type of service to a target satellite node via a first type of satellite node in an optoelectronic hybrid network, so that the target satellite node transmits the first type of service to a destination.

[0108] The first type of satellite node in the embodiments of this specification is dedicated to the access and transmission of special services, which is equivalent to opening an end-to-end network dedicated line for the special services, thereby realizing end-to-end physically isolated communication for the special services; and the first type of satellite node can use the wavelength division multiplexing-based optical wavelength switching of its OTN equipment to conveniently realize end-to-end physically isolated communication between different special services, thereby avoiding the deployment of separate routing and switching equipment for different special services in each satellite node of the optoelectronic hybrid satellite network as in the prior art, effectively saving satellite space and energy consumption, reducing satellite weight, and thus reducing the implementation cost of end-to-end physically isolated communication for special services.

[0109] In other embodiments of the present specification, when the optoelectronic hybrid satellite network is configured with a third type of satellite node, the first type of service may also be transmitted to the target satellite node via the first type of satellite node and / or the third type of satellite node.

[0110] The embodiment of this specification provides another communication method, which can be applied to the first type of satellite node side of the above-mentioned optoelectronic hybrid satellite network, referring to Figure 8 As shown, in some embodiments of this specification, the communication method may include the following steps:

[0111] Step 801: A first-type satellite node receives a client signal containing first-type service data from a signal source.

[0112] After the onboard base station of the first-type satellite node receives the first-type service data sent by the signal source through the satellite-to-ground link, the onboard base station can send the first-type service data as a client signal to the routing switching device (router or OTN device) of the first-type satellite node through the data interface.

[0113] Step 802: The first type of satellite node encapsulates the client signal into an Optical Channel Payload Unit (OPU) frame.

[0114] Taking the OTN equipment of the first type of satellite node as an example, the OTN equipment can encapsulate the customer signal into an OPU frame and map it to the laser carrier signal of the corresponding wavelength through layer-by-layer multiplexing (WDM multiplexing), that is, map it to the laser carrier specially allocated for the first type of service.

[0115] Step 803: The first type of satellite node generates a wavelength division multiplexing signal including the laser carrier signal.

[0116] Taking the OTN device of the first type of satellite node as an example, based on the WDM multiplexing technology, the OTN device can generate a wavelength division multiplexing signal including the laser carrier signal.

[0117] Step 804: The first type of satellite node forwards the wavelength division multiplexing signal.

[0118] Taking the OTN equipment of the first type of satellite node as an example, the OTN equipment can forward the wavelength division multiplexing signal to the relay node (such as the third satellite node or other first satellite node). In this way, the first type of service can be forwarded from the source satellite node to the target satellite node through hop-by-hop forwarding, and then sent to the destination (terminal or gateway) through the satellite-to-ground link by the target satellite node, thereby realizing end-to-end physically isolated communication for the first type of service.

[0119] based on Figure 8 The communication method shown can not only reduce the implementation cost of end-to-end physically isolated communication for specialized services, but also improve the availability and flexibility of network communications.

[0120] Although the process flows described above include multiple operations occurring in a particular order, it should be understood that these processes may include more or fewer operations, and that the operations may be performed sequentially or in parallel (eg, using parallel processors or a multi-threaded environment).

[0121] Corresponding to the above-mentioned communication method, an embodiment of the present application further provides a communication device, which includes a receiving module and a transmitting module; wherein:

[0122] A receiving module, configured to receive a first type of service from a signal source;

[0123] The transmission module is used to transmit the first type of service to the target satellite node via the first type of satellite node of the optoelectronic hybrid satellite network, so that the target satellite node transmits the first type of service to the destination.

[0124] For the convenience of description, the above devices are described as being divided into various units according to their functions. Of course, when implementing this specification, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0125] An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

[0126] Figure 9 The diagram shows the structure of the network device according to the embodiment of the present application. Figure 9 As shown, network device 900 may include: a processor 910 (e.g., a central processing unit (CPU)) and a memory 920; the memory 920 is coupled to the processor 910. The memory 920 may store various data; in addition, the memory 920 may store an information processing program 930, and the program 930 may be executed under the control of the processor 910.

[0127] For example, the processor 910 may be configured to execute a program to implement the communication method described in the previous embodiment. For example, the processor 910 may be configured to perform the following control: receiving a first-category service from a source; transmitting the first-category service to a target satellite node via a first-category satellite node of the optical-electrical hybrid network, so that the target satellite node transmits the first-category service to a destination.

[0128] In addition, if Figure 9 As shown, the network device 900 may also include: a transceiver 940 and an antenna 950, etc.; wherein, the functions of the above components are similar to those of the prior art and are not described here. It is worth noting that the network device 900 does not necessarily have to include Figure 9 In addition, the network device 900 may also include all components shown in Figure 9 For components not shown, reference may be made to the prior art.

[0129] An embodiment of the present application also provides a chip, wherein the chip includes a circuit system, and the circuit system is configured to execute the above-mentioned communication method; when the circuit system is configured to execute the above-mentioned communication method, the circuit system can form a component of a network device.

[0130] For the convenience of description, the above devices are described as being divided into various units according to their functions. Of course, when implementing this application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0131] An embodiment of the present application further provides a computer storage medium storing instructions, wherein the instructions, when executed individually or collectively by at least one processor of a computer device, cause the computer device to execute the above-mentioned communication method.

[0132] An embodiment of the present application further provides a computer program product, comprising instructions, wherein when the instructions are executed individually or collectively by at least one processor of a computer device, the computer device executes the above-mentioned communication method.

[0133] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), computer-readable storage media, and computer program products of some embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processor to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processor generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0134] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processor to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, the instruction device being implemented in the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0135] These computer program instructions can also be loaded onto a computer or other programmable data processor so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0136] In a typical configuration, a computer device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0137] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0138] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be used to store information using any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computer device. As defined in this application, computer-readable media does not include transitory computer-readable media such as modulated data signals and carrier waves.

[0139] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application may take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware. Furthermore, the embodiments of the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0140] Embodiments of the present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, and the like that perform specific tasks or implement specific abstract data types. Embodiments of the present application may also be practiced in distributed computing environments where tasks are performed by remote processors connected via a communications network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0141] It should also be understood that in the embodiments of this application, the term "and / or" is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0142] The various embodiments in this application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0143] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and features of different embodiments or examples without contradiction.

[0144] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. An optoelectronic hybrid satellite network, characterized in that: include: A first-class satellite node having a first router and a first optical transport network device, configured to provide access to a first-class service and transmit the first-class service based on the first router or the first optical transport network device; The second type satellite node has a second router, which is used to provide access to the second type of service and transmit the second type of service based on the second router.

2. The optoelectronic hybrid satellite network according to claim 1, wherein: The optoelectronic hybrid satellite network further includes: A third type of satellite node having a third router and a second optical transport network device is used to provide access to a second type of service, transmit the second type of service based on the third router or the second optical transport network device, or transmit the first type of service based on the second optical transport network device.

3. The optoelectronic hybrid satellite network according to claim 1, wherein: The resource allocation requirement of the first type of business is lower than the resource allocation requirement of the second type of business, and the service density of the first type of business is lower than the service density of the second type of business.

4. The optoelectronic hybrid satellite network according to claim 2, wherein: The first optical transport network device includes a first optical wavelength switching module and a first time-division circuit switching module; the second optical transport network device includes a second optical wavelength switching module and a second time-division circuit switching module.

5. The optoelectronic hybrid satellite network according to claim 4, wherein: The first-type satellite node transmits the first-type service based on the first optical transport network device, including: The first type of satellite node transmits the first type of service based on the first optical wavelength switching module in the first optical transport network device; or the first type of satellite node transmits the first type of service based on the first time division circuit switching module in the first optical transport network device; The third-category satellite node transmits the second-category service based on the second optical transport network device, including: The third type of satellite node transmits the second type of service based on the second optical wavelength switching module in the second optical transport network device; or, the third type of satellite node transmits the second type of service based on the second time division circuit switching module in the second optical transport network device.

6. The optoelectronic hybrid satellite network according to claim 2, wherein: The third-category satellite node transmits the first-category service based on the second optical transport network device, including: The third type of satellite node transmits the first type of service based on the second optical wavelength switching module in the second optical transport network device.

7. The optoelectronic hybrid satellite network according to claim 1, wherein: The set of satellite nodes of the network forms a first two-dimensional topological structure, and the set of first-type satellite nodes of the network forms a second two-dimensional topological structure.

8. The optoelectronic hybrid satellite network according to claim 7, wherein: The first two-dimensional topological structure includes a two-dimensional torus topology; and the second two-dimensional topological structure includes a sparse two-dimensional torus topology.

9. A communication method, characterized in that: The method comprises: receiving a first type of service from a source; The first type of service is transmitted to a target satellite node via the first type of satellite node of the optoelectronic hybrid satellite network according to any one of claims 1 to 8, so that the target satellite node transmits the first type of service to a destination.

10. The communication method according to claim 9, wherein: The receiving of the first type of service from the information source includes: A client signal containing first-category service data is received from a signal source.

11. The communication method according to claim 10, wherein: After receiving the first type of service, the method further includes: Encapsulating the client signal into an optical channel payload unit frame; Mapping the optical channel payload unit frame into a laser carrier signal of a corresponding wavelength; A wavelength division multiplexed signal including the laser carrier signal is generated.

12. The communication method according to claim 11, wherein: The transmitting the first type of service to the target satellite node via the first type of satellite node of the optoelectronic hybrid network includes: The wavelength division multiplexing signal is transmitted to the target satellite node via the first type of satellite node of the optoelectronic hybrid network.

13. The communication method according to claim 9, wherein: The information source includes a terminal and / or a gateway; the information sink includes a terminal and / or a gateway.

14. A communication device, characterized in that: The device comprises: A receiving module, configured to receive a first type of service from a signal source; A transmission module is used to transmit the first type of service to a target satellite node via the first type of satellite node of the optoelectronic hybrid satellite network according to any one of claims 1 to 8, so that the target satellite node transmits the first type of service to a destination.

15. A network device, characterized in that: include: at least one processor; as well as At least one memory stores thereon instructions, which, when executed individually or collectively by the at least one processor, cause the network device to perform the method according to any one of claims 9 to 13.

16. A computer storage medium storing instructions, characterized in that: When the instructions are executed individually or collectively by at least one processor of a computer device, the instructions cause the computer device to perform the method according to any one of claims 9 to 13.

17. A computer program product comprising instructions, characterized in that When the instructions are executed individually or collectively by at least one processor of a computer device, the instructions cause the computer device to perform the method according to any one of claims 9 to 13.

18. A chip, characterized in that: The chip comprises circuitry configured to perform the method according to any one of claims 9 to 13 .

Images