Optoelectronic hybrid satellite network and communication method, apparatus, device and storage medium

Abstract

The present specification relates to the technical field of wireless communication, and provides an optical-electric hybrid satellite network and a communication method, device, equipment and storage medium. The network comprises: a first type of satellite node having a first router and a first optical transport network device, configured to provide access of a first type of service, and transmit the first type of service based on the first router or the first optical transport network device; and a second type of satellite node having a second router, configured to provide access of a second type of service, and transmit the second type of service based on the second router. The embodiments of the present specification can reduce the cost of end-to-end physical isolation communication in the optical-electric hybrid satellite network.

Description

Technical Field

[0001] This specification relates to the field of wireless communication technology, and in particular to an optoelectronic hybrid satellite network and its communication method, apparatus, device and storage medium. Background Technology

[0002] Satellite internet can provide different types of services to different users; to ensure the security of certain types of services, they need to be physically isolated from other types of services. In scenarios where satellite internet is a hybrid optoelectronic satellite network, how to achieve end-to-end physically isolated communication in a hybrid optoelectronic satellite network at low cost has become an urgent technical problem to be solved. Summary of the Invention

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

[0004] To achieve the above objectives, in one aspect, embodiments of this specification provide a hybrid optoelectronic satellite network, comprising:

[0005] A first type of satellite node having a first router and a first optical transmission network device is used to provide access to a first type of service and to transmit the first type of service based on the first router or the first optical transmission network device.

[0006] A second type of satellite node with a second router is used to provide access to the second type of service and to transmit the second type of service based on the second router.

[0007] In the electro-optical hybrid satellite network of the embodiments of this specification, the electro-optical hybrid satellite network further includes:

[0008] A third type of satellite node, equipped with 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 embodiments of this specification, the resource allocation requirements of the first type of service are lower than those of the second type of service, and the service density of the first type of service is lower than that of the second type of service.

[0010] In the optoelectronic hybrid satellite network of the embodiments 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 this specification embodiment, the first type of satellite nodes transmit the first type of service based on the first optical transport network equipment, 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 equipment; 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 equipment.

[0013] The third type of satellite node transmits the second type of service based on the second optical transport network equipment, 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 equipment; 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 equipment.

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

[0017] In the optoelectronic hybrid satellite network of the embodiments of this specification, the set of satellite nodes of the network forms a first two-dimensional topology, and the set of satellite nodes of the first type of network forms a second two-dimensional topology.

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

[0019] On the other hand, embodiments of this specification also provide a communication method, wherein the method, applied to a first type of satellite node in the aforementioned optoelectronic hybrid satellite network, includes:

[0020] Receive Category I services from the information source;

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

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

[0023] Receive customer signals containing the first type of business data from the information source.

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

[0025] The customer signal is encapsulated into an optical channel payload unit frame;

[0026] The optical channel payload unit frame is mapped to the laser carrier signal of the corresponding wavelength;

[0027] Generate a wavelength division multiplexed signal containing the laser carrier signal.

[0028] In the communication method of this specification embodiment, the transmission of 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 multiplexed signal is transmitted to the target satellite node via a first-type satellite node in an optoelectronic hybrid network.

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

[0031] On the other hand, embodiments of this specification also provide a communication device, wherein the device includes:

[0032] The receiving module is used to receive Type I services from the 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 aforementioned optoelectronic hybrid satellite network, so that the target satellite node transmits the first type of service to the destination.

[0034] On the other hand, embodiments of this application also provide a network device, comprising:

[0035] At least one processor; and

[0036] At least one memory storing instructions that, when executed individually or jointly by the at least one processor, cause the network device to perform the method described above.

[0037] On the other hand, embodiments of this application also provide a computer storage medium storing instructions thereon, wherein the instructions, when executed individually or jointly by at least one processor of a computer device, cause the computer device to perform the above-described method.

[0038] On the other hand, embodiments of this application also provide a computer program product, including instructions, wherein the instructions, when executed individually or jointly by at least one processor of a computer device, cause the computer device to perform the above-described method.

[0039] On the other hand, embodiments of this application also provide a chip, wherein the chip includes a circuit system configured to perform the above-described method.

[0040] As can be seen from the technical solutions provided in the embodiments of this specification above, compared with existing equipment isolation, the first type of satellite node in the embodiments of this specification is dedicated to the access and transmission of the first type of service, which is equivalent to opening an end-to-end network leased line for the first type of service, thereby realizing end-to-end physical isolation communication of the first type of service; moreover, the first type of satellite node can use the wavelength division multiplexing-based optical wavelength switching of its optical transport network equipment to conveniently realize end-to-end physical isolation communication between different first type of services, avoiding the need to deploy separate routing and switching equipment for different first type of services in each satellite node of the optoelectronic hybrid satellite network as in the prior art (for example, when there are three different first type of services, three sets of routing and switching equipment need to be deployed in each satellite node), thereby effectively saving satellite space and energy consumption, reducing satellite weight, and thus reducing the implementation cost of end-to-end physical isolation communication of the first type of service. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0042] Figure 1 A schematic diagram of a hybrid electro-optical satellite network in some embodiments of this specification is shown;

[0043] Figure 2 This specification illustrates a schematic diagram of the transmission of Type I services in a hybrid electro-optical satellite network in some embodiments of this specification;

[0044] Figure 3 A schematic diagram illustrating the transmission of Type 1 services at Type 1 satellite nodes in some embodiments of this specification is shown.

[0045] Figure 4 This specification illustrates a schematic diagram of the transmission of Type I services on Type III satellite nodes in some embodiments.

[0046] Figure 5 This specification illustrates a schematic diagram of the transmission of Type II services in a hybrid electro-optical satellite network in some embodiments of this specification;

[0047] Figure 6 The diagram illustrates the transmission of Type II services in a hybrid electro-optical satellite network in some other embodiments of this specification;

[0048] Figure 7 Flowcharts of communication methods in some embodiments of this specification are shown;

[0049] Figure 8 Flowcharts of communication methods in other embodiments of this specification are shown;

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

[0051] [Explanation of Labels in the Attached Image]

[0052] 10. Category I satellite nodes;

[0053] 20. Category II satellite nodes;

[0054] 30. Category III satellite nodes;

[0055] 41. Spaceborne base station;

[0056] 42. Router;

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

[0058] 44. Optical wavelength switching module;

[0059] 50. Source of information;

[0060] 60. Xinsu;

[0061] 900: Network equipment;

[0062] 910: Processor;

[0063] 920: Memory;

[0064] 930: Program;

[0065] 940: Transceiver;

[0066] 950: Antenna. Detailed Implementation

[0067] 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 with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0068] It should be noted that in the embodiments of this 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, data stored, data displayed, etc.) involved are all information and data authorized and agreed upon 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 all comply with the relevant provisions of national laws and regulations.

[0069] In the description of this application, unless otherwise stated, "and / or" is a term describing the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone, where A and B can be singular or plural. Furthermore, in the description of this disclosure, unless otherwise stated, "multiple" refers to two or more. "At least one of the following" or similar expressions refer 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 represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0070] In this application, the expressions "greater than" or "less than" may be used to determine whether a specific condition is met, but this is only for illustrative purposes and is not intended to exclude statements of "above" or "below". A condition expressed as "above" may be replaced by "greater than", a condition expressed as "below" may be replaced by "less than", and a condition expressed as "above and less than" may be replaced by "greater than and below". Furthermore, hereinafter, "A" to "B" represent at least one of the elements from A (inclusive of A) to B (inclusive of B).

[0071] In the embodiments of this application, the singular forms "a," "the," etc., including the plural forms, should be broadly understood as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms, unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0072] This application provides the method operation steps as described in the embodiments or flowcharts, but based on conventional or non-inventive labor, more or fewer operation steps may be included. The order of steps listed in the embodiments is merely one possible execution order among many steps and does not represent the only execution order. In actual system or device products, the methods shown in the embodiments or drawings can be executed sequentially or in parallel.

[0073] It should be noted that in the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned. These should be regarded as exemplary and are only intended to illustrate the feasibility of implementing the technical solution of this application. However, it does not mean that the applicant has used or necessarily used the solution.

[0074] This application uses terminology used in some communication specifications (such as 3GPP, the European Telecommunications Standards Institute (ETSI), Extensible Radio Access Network (ERAN), and Open-Radio Access Network (O-RAN)) to describe various embodiments, but this is merely illustrative. The various embodiments of this application can also be readily modified and applied in other communication systems.

[0075] In the embodiments of this application, communication between devices in the communication system can be carried out according to communication protocols at any stage, such as 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) and / or other currently known or future communication protocols.

[0076] For ease of understanding, the technical terms involved in the embodiments of this application will be explained below.

[0077] (1) Terminal Device: refers to a device that has wireless transceiver capabilities and can cooperate with network-side devices to provide communication services to users. Terminal devices can also be called terminals, user equipment (UE), user terminals, mobile terminals (MT), or user agents, etc. For example, terminal devices can be mobile phones, tablets, laptops, wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless communication devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, Internet of Things (IoT) devices, narrowband Internet of Things (NB-IoT) devices, vehicle-to-everything (V2X) devices, devices in device-to-device communication (D2D), enhanced machine-type communication (eMTC) devices, and reduced-capacity devices. 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 shipboard devices, etc.

[0078] In scenarios such as the Internet of Things (IoT), terminal devices can also be machines or devices used 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, and so on.

[0079] (2) Network equipment: refers to network-side equipment capable of communicating with terminal equipment. Network equipment can be located on satellites or the ground. Network equipment can also be called space base station, satellite-borne base station, satellite, satellite communication node, satellite network terminal equipment, satellite communication module, or base station, etc. This network-side equipment can also be called access network equipment or wireless access network equipment. Network-side equipment can be a base station (BTS) in a satellite-borne Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system; a base station (NodeB, NB) in a satellite-borne Wideband Code Division Multiple Access (WCDMA) system; an evolved base station (eNB or eNodeB) in a satellite-borne LTE system; a base station in a terrestrial network or non-terrestrial network (NTN), such as a base station (gNB) in a satellite-borne 5G network; a base station in a future network (e.g., 6G) after 5G, 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, carried by satellite. In the context of Networks (CRAN), wireless controllers can also be satellite-borne city base stations, micro base stations, pico base stations, or femtobase stations. Base stations can also be ground-based base stations capable of satellite communication, and can be referred to as Access Points (APs), 5G nodes (5th generation nodes), wireless points, or Transmission / Reception Points (TRPs), the latter having equivalent technical meanings. Network equipment can also refer to base station equipment carried by High Altitude Platform Stations (HAPS) with loiter capabilities, such as large balloons or airships, base station equipment in Roadside Units (RSUs), or base station equipment in vehicle-to-everything (V2X) networks.

[0080] Both terminal devices and base station devices can perform beamforming, but the embodiments of this 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 can perform beamforming, or neither the terminal nor the base station may perform beamforming. In this application, a beam refers to the spatial flow of signals in a wireless channel, formed by one or more antennas or antenna elements; such a formation process can be called beamforming.

[0081] Furthermore, the terms "network side" or "network equipment side" refer to one side of the network, which can be a base station or include one or more network devices as mentioned above. The terms "terminal side" or "terminal equipment" refer to the side of the user or terminal, which can be a UE or include one or more terminal devices as mentioned 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 specialized services to special users. To ensure the security of specialized services, physical isolation is required. In traditional physical isolation, satellite internet needs to allocate a dedicated line within the same network to achieve end-to-end physical isolation between specialized services and general services. This means providing specialized services with an end-to-end path that does not share the electrical domain physical channel with general services. In the point-to-point transmission segment, physical isolation can be achieved through wavelength division multiplexing (WDM) technology. However, at the node switching point, IP packet switching, electrical domain time-division circuit switching of optical transport networks (OTN), and time-division circuit switching of sliced ​​packet networks (SPN) cannot meet the physical isolation requirements, necessitating the design of new node switching architectures. Therefore, to achieve end-to-end physical isolation, existing technologies mainly employ the following two methods:

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

[0084] While device isolation is easy to implement, it consumes significant space resources on the satellite platform and has high energy consumption, resulting in high implementation costs. Furthermore, when addressing physical isolation between multiple services, additional routing and switching equipment is required, leading to poor scalability in this approach.

[0085] (2) Wavelength isolation: Add an optical wavelength switching function module to the SPN / Gray OTN routing and switching equipment. Ordinary services and special services are isolated and switched in the optical domain as needed in the wavelength switching equipment.

[0086] Wavelength isolation eliminates the need for multiple routing and switching devices at intermediate nodes, avoiding significant increases in space and energy consumption, resulting in relatively low costs. Furthermore, isolation channels can be expanded by increasing the number of wavelengths without requiring hardware upgrades. However, this method only addresses service isolation on the transmission line side, not on the access side; therefore, 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 physical isolation communication in a hybrid optoelectronic satellite network and improve the scalability of end-to-end physical isolation communication in a hybrid optoelectronic satellite network, embodiments of this specification provide an improved hybrid optoelectronic satellite network.

[0088] Figure 1 This specification illustrates some embodiments of a hybrid electro-optical satellite network, which 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 type of satellite node 10 includes an onboard base station 41, a router 42, and OTN equipment (including an optical wavelength switching module 44). The first type of satellite node 10 is used to provide access to the first type of service (including access at both the transmitting and receiving ends), and transmits the first type of service based on its router 42 or OTN equipment. Thus, the first type of satellite node 10 is equivalent to opening an end-to-end network leased line for the first type of service. In some embodiments of this specification, the first type of service is a satellite service with relatively high security requirements, which requires end-to-end physical isolation communication. It is generally a special service for special users or special scenarios (such as services for maritime, aviation, and emergency rescue).

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

[0091] Compared to existing equipment isolation, 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 leased line for special services, thereby realizing end-to-end physical isolation communication for special services. Moreover, 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 need to deploy 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). This effectively saves satellite space and energy consumption, reduces satellite weight, and thus reduces the implementation cost of end-to-end physical isolation communication for special services.

[0092] Furthermore, since the first type of satellite nodes are equipped with OTN equipment, no new routing and switching equipment is needed when adding new special service types (i.e., no new routers or OTN equipment are needed), which also improves the scalability 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 of satellite node 10 and the second type of satellite node 20, the optoelectronic hybrid satellite network may also include a third type of satellite node 30. The third type of satellite node 30 has an onboard base station 41, a router 42, and OTN equipment; the third type of satellite node 30 is used to provide access to the second type of service (e.g., ordinary service), and transmits the second type of service (e.g., ordinary service) based on its router 42 or OTN equipment; that is, the third type of satellite node 30 can be used for both dedicated services and ordinary services, meaning it can be used for both relay transmission of dedicated services and access and relay transmission of ordinary services; thus, when the processing pressure of dedicated services is high, the combination of the first type of satellite node and the third type of satellite node can alleviate or reduce the relay transmission processing pressure of dedicated services; when the processing pressure of ordinary services is high, the combination of the second type of satellite node and the third type of satellite node can alleviate or reduce the access and relay transmission processing pressure of ordinary services; therefore, by deploying a portion of the third type of satellite nodes 30 in the optoelectronic hybrid satellite network, the availability and flexibility of the network can be improved.

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

[0095] In some embodiments of this specification, since the resource allocation requirements (such as bandwidth requirements) and service density of specialized services are much lower than those of ordinary services, and they generally do not require multiple coverage, it is not necessary for all satellite nodes in a hybrid optoelectronic satellite network to deploy optical switching functions. Optical switching capabilities can be enabled on a small number of nodes (Type I and Type III satellite nodes) across the entire network to construct a corresponding optical backbone network. At the same time, wavelength division multiplexing (WDM) technology can be used to achieve support for multiple wavelengths across the entire network, thereby constructing a high-security network based on wavelength-based physical isolation. In this way, the security isolation requirements of specialized services can be met, and the utilization rate of satellite resources can also be improved.

[0096] In some embodiments of this specification, all satellite nodes (Type I, Type II, and Type III satellite nodes) in the optoelectronic hybrid satellite network can form a two-dimensional topology. In this case, all Type I satellite nodes in the optoelectronic hybrid satellite network can form a more sparse two-dimensional topology. This reduces the deployment cost of satellite nodes, making inter-satellite routing simple, efficient, and with low network latency.

[0097] For example, with Figure 1 Taking the electro-optical hybrid satellite network shown as an example, all satellite nodes (Type 1 satellite node 10, Type 2 satellite node 20, and Type 3 satellite node 30) in this electro-optical hybrid satellite network form a two-dimensional torus topology; correspondingly, all Type 1 satellite nodes 10 in this electro-optical hybrid satellite network form a sparser 2D-Torus topology. It should be understood that... Figure 1 The satellite nodes shown are only schematic representations of a hybrid electro-optical satellite network. In actual implementation, a hybrid electro-optical 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 type of service is the first type of satellite node 10, when the source 50 initiates the first service, it needs to access the network through the first type of satellite node 10 (i.e., the source 50 selects a first type of satellite node 10 as the source satellite node); when the destination 60 receives the first service, it also needs to access the network through the first type of satellite node 10 (i.e., the destination 60 selects another first type of satellite node 10 as the target satellite node). During the transmission of the first type of service in the optoelectronic hybrid satellite network, the relay satellite node can be the third type of satellite node 30 and / or the first type of satellite node 10; while the second type of satellite node 20 cannot be used as a relay satellite node for the first type of service, so as not to affect the service security of the special service.

[0099] In some embodiments of this specification, the information source 50 may include a terminal and / or a gateway station; the information sink 60 may also include a terminal and / or a gateway station. The terminal may be a ground terminal (e.g., a ground vehicle, portable electronic device, etc.) and / or a non-ground terminal (e.g., an aircraft, etc.). The gateway station is a data center node in a hybrid optoelectronic satellite network, responsible for the distribution and collection of satellite communication service data, and can complete the exchange of data within the network and data routing to external networks; in short, the gateway station is a bridge connecting the satellite network and the terrestrial public network.

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

[0101] Combination Figure 4 As shown in some embodiments of this specification, when the third type of satellite node 30 acts as a relay node for the first type of service, the third type of satellite node 30 can transmit the first type of service based on the optical wavelength switching module 44 in its OTN equipment. Since the third type of satellite node 30 can also act as an access node and relay node for the second type of service, in order to ensure the service security of the first type of service, when the third type of satellite node 30 forwards the first type of service, it can only forward it to the next relay node through its optical wavelength switching module 44; that is, on the side of the third type of satellite node 30, the first type of service cannot be parsed and sent to the time division circuit switching module 43 of its OTN equipment, nor can it be parsed and sent to its router 42.

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

[0103] For example, refer to Figure 5As shown in some embodiments of this specification, the third type of satellite node 30, as the source satellite node for the second type of service, can receive the second type of service from the source 50 and forward it to the next relay satellite node (e.g., via its router, time-division circuit switching module, or optical wavelength switching module). Figure 5 Another third-class satellite node 30); the second-class satellite node 20, as the destination satellite node for the second-class service, can send the second-class service forwarded by the relay satellite node to the destination 60 via the satellite-to-ground link.

[0104] For example, refer to Figure 6 As shown, in some other embodiments of this specification, the second type of satellite node 20, as the source satellite node for the second type of service, can receive the second type of service from the source 50 and forward it to the next relay satellite node (e.g., via its router) through its router. Figure 6 Another second-class satellite node 20); the third-class satellite node 30, as the destination satellite node for the second-class service, can send the second-class service forwarded by the relay satellite node to the destination 60 via the satellite-to-ground link.

[0105] This specification provides a communication method that can be applied to the first type of satellite node side of the aforementioned optoelectronic hybrid satellite network. (Refer to...) Figure 7 As shown, in some embodiments of this specification, the communication method may include the following steps:

[0106] Step 701: Receive Type I service from the information source;

[0107] Step 702: Transmit the first type of service to the target satellite node via the first type of satellite node of the optoelectronic hybrid network, so that the target satellite node transmits the first type of service to the 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 leased line for special services, thereby realizing end-to-end physical isolation communication for special services. Moreover, 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. This effectively saves satellite space and energy consumption, reduces satellite weight, and thus reduces the implementation cost of end-to-end physical isolation communication for special services.

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

[0110] This specification provides an alternative communication method that can be applied to the first type of satellite node side of the aforementioned optoelectronic hybrid satellite network. (Refer to...) Figure 8 As shown, in some embodiments of this specification, the communication method may include the following steps:

[0111] Step 801: The first type of satellite node receives customer signals containing first type of service data from the information source.

[0112] After receiving the first type of service data sent by the source through the satellite-to-ground link, the satellite-based base station of the first type of satellite node can use the first type of service data as a customer signal and send it to the routing and switching equipment (router or OTN device) of the first type of 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 corresponding wavelength laser carrier signal through layer-by-layer multiplexing (WDM multiplexing), that is, map it to the laser carrier specifically allocated for this first type of service.

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

[0116] Taking the OTN equipment of the first type of satellite node as an example, based on WDM multiplexing technology, the OTN equipment can generate a wavelength division multiplexed signal containing 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 wavelength division multiplexing signals to relay nodes (such as the third satellite node or other first satellite nodes). 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 the target satellite node can send it to the destination (terminal or gateway station) through the satellite-to-ground link, thereby realizing end-to-end physical isolation 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 physical isolation communication for specialized services, but also improve the availability and flexibility of network communication.

[0120] Although the process described above includes multiple operations that occur in a specific order, it should be clearly understood that these processes may include more or fewer operations that can be executed sequentially or in parallel (e.g., using parallel processors or a multithreaded environment).

[0121] Corresponding to the communication method described above, this application also provides a communication device, which includes a receiving module and a transmitting module; wherein:

[0122] The receiving module is used to receive Type I services from the 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 ease of description, the above devices are described in terms of function, divided into various units. Of course, in implementing this specification, the functions of each unit can be implemented in one or more software and / or hardware components.

[0125] This application also provides a network device, such as a base station, but this application is not limited to this and may also include other network devices.

[0126] Figure 9 The diagram shown is a schematic representation of the network device according to an embodiment of this application. Figure 9 As shown, the 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 can store various types of data; it also stores an information processing program 930, and executes the program 930 under the control of the processor 910.

[0127] For example, processor 910 can be configured to execute a program to implement the communication method as described in the previous embodiment. For example, processor 910 can be configured to perform the following control: receive a first type of service from a source; transmit the first type of service to a target satellite node via a first type of satellite node in a hybrid optoelectronic network, so that the target satellite node transmits the first type of service to a destination.

[0128] In addition, such as Figure 9 As shown, network device 900 may also include: transceiver 940 and antenna 950, etc.; the functions of the above components are similar to those in the prior art, and will not be described in detail here. It is worth noting that network device 900 is not necessarily required to include... Figure 9 All components shown; in addition, network device 900 may also include Figure 9 For components not shown, please refer to existing technologies.

[0129] This application also provides a chip, wherein the chip includes a circuit system configured to perform the above-described communication method; when the circuit system is configured to perform the above-described communication method, the circuit system can form a component of a network device.

[0130] For ease of description, the above devices are described separately by function as various units. Of course, in implementing this application, the functions of each unit can be implemented in one or more software and / or hardware.

[0131] This application also provides a computer storage medium storing instructions thereon, wherein the instructions, when executed individually or jointly by at least one processor of a computer device, cause the computer device to perform the above-described communication method.

[0132] This application also provides a computer program product, including instructions, wherein the instructions, when executed individually or jointly by at least one processor of a computer device, cause the computer device to perform the above-described communication method.

[0133] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), computer-readable storage media, and computer program products according to some embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processor to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processor, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0134] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processor to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0135] These computer program instructions may also be loaded onto a computer or other programmable data processor, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

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

[0137] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0138] Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can store information using any method or technology. 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, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by computer equipment. As defined in this application, computer-readable media does not include transient media, such as modulated data signals and carrier waves.

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

[0140] The embodiments of this application can be described in the general context of computer-executable instructions, such as program modules, that are executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. The embodiments of this application can also be practiced in distributed computing environments where tasks are performed by remote processors connected via a communication network. In a distributed computing environment, program modules can reside 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 related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

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

[0143] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this application, as well as the features of different embodiments or examples.

[0144] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An opto-electric hybrid satellite network, characterized in that, The network comprises: a first type of satellite node having a first router and a first optical transport network device, and being dedicated to providing access of a first type of service and transmitting the first type of service based on the first router or the first optical transport network device; the first type of satellite node transmitting the first type of service based on the first optical transport network device comprises that the first type of satellite node transmits the first type of service based on a 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 a first time-division circuit switching module in the first optical transport network device; a second type of satellite node having a second router, and being used to provide access of a second type of service and transmit the second type of service based on the second router; a third type of satellite node having a third router and a second optical transport network device, and being used to provide access of the second type of service and 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; the third type of satellite node transmitting the second type of service based on the second optical transport network device comprises that the third type of satellite node transmits the second type of service based on a 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 a second time-division circuit switching module in the second optical transport network device.

2. The opto-electric hybrid satellite network of claim 1, wherein, The resource allocation requirement of the first type of service is lower than that of the second type of service, and the traffic density of the first type of service is lower than that of the second type of service.

3. The optoelectronic hybrid satellite network of claim 1, wherein, The first optical transport network device comprises a first optical wavelength switching module and a first time-division circuit switching module; and the second optical transport network device comprises a second optical wavelength switching module and a second time-division circuit switching module.

4. The optoelectronic hybrid satellite network of claim 1, wherein, The third type of satellite node transmitting the first type of service based on the second optical transport network device comprises: 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.

5. The optoelectronic hybrid satellite network of claim 1, wherein, The set of satellite nodes of the network forms a first two-dimensional topology, and the set of first type of satellite nodes of the network forms a second two-dimensional topology.

6. The opto-electric hybrid satellite network of claim 5, wherein, The first two-dimensional topology comprises a two-dimensional ring surface topology, and the second two-dimensional topology comprises a sparse two-dimensional ring surface topology.

7. A communication method characterized by comprising: The method comprises: receiving the first type of service from a signal source; transmitting 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 1-6, so that the target satellite node transmits the first type of service to a signal sink.

8. The communication method of claim 7, wherein, The receiving the first type of service from a signal source comprises: receiving a client signal containing first type of service data from a signal source.

9. The communication method of claim 8, wherein, After the receiving the first type of service, the method further comprises: 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; generating a wavelength division multiplexing signal containing the laser carrier signal.

10. The communication method of claim 9, wherein, The transmitting the first type of service to a target satellite node via the first type of satellite node of the optoelectronic hybrid network comprises: transmitting the wavelength division multiplexed signal to a target satellite node via a first type satellite node of the opto-electric hybrid network.

11. The communication method of claim 7, wherein, The source comprises a terminal and / or a gateway station; and the sink comprises a terminal and / or a gateway station.

12. A communications device, characterized by The apparatus comprises: a receiving module configured to receive first type traffic from a source; a transmitting module configured to transmit the first type traffic to a target satellite node via a first type satellite node of the opto-electric hybrid satellite network of any one of claims 1-6, so that the target satellite node transmits the first type traffic to a sink.

13. A network device, comprising: comprising: at least one processor; and at least one memory storing instructions thereon that, when executed by the at least one processor alone or in combination, cause the network device to perform the method according to any one of claims 7-11.

14. A computer storage medium having stored thereon instructions, the computer storage medium comprising: The instructions, when executed by the at least one processor of the computer device alone or in combination, cause the computer device to perform the method according to any one of claims 7-11.

15. A computer program product comprising instructions, characterized in that, The instructions, when executed by the at least one processor of the computer device alone or in combination, cause the computer device to perform the method according to any one of claims 7-11.

16. A chip, characterized by The chip comprises circuitry configured to perform the method according to any one of claims 7-11.

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