CN106850048B - Satellite communication method, device and satellite communication system - Google Patents
Satellite communication method, device and satellite communication system Download PDFInfo
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18584—Arrangements for data networking, i.e. for data packet routing, for congestion control
Abstract
The invention provides a satellite communication method, a satellite communication device and a satellite communication system, wherein the method comprises the following steps: respectively receiving detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying a source satellite terminal and a destination satellite terminal; acquiring identification information of one or more MEO satellites serving the source satellite terminal and a target satellite terminal corresponding to the source satellite terminal according to the detection message; and configuring an on-satellite channelized switching path according to the identification information, and sending the on-satellite channelized switching path to one or more MEO satellites, so that the one or more MEO satellites send data from the source satellite terminal to the destination satellite terminal according to the on-satellite channelized switching path. The invention solves the problem that the MEO constellation broadband satellite communication system in the prior art can not adopt an on-satellite channelized switching system to complete satellite communication.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a satellite communication method, a satellite communication device and a satellite communication system.
Background
The satellite communication system in China mainly adopts Geosynchronous orbit satellites (GEO for short), can only cover the territory and the peripheral areas in China, can further extend to partial areas in Africa and Europe through satellite on-orbit maneuvering and satellite-borne movable spot beam antennas, and does not have the capacity of global satellite communication. Because a Medium Earth Orbit (MEO) system can provide high elevation coverage at all latitudes while providing global coverage, can start to provide services along with the formation of partial constellations, and obtains higher elevation of user communication along with the increase of satellites, improves coverage capability, develops various communication services, and meets the requirements of users on lower service cost, smaller time delay, high utilization rate, high quality and high reliability of satellite communication, the MEO system is an effective way for developing satellite communication services. The research on MEO satellite mobile communication systems is started earlier in foreign countries, and the most representative system is O3b broadband satellite communication constellation system and the like. At present, China does not have an own MEO global communication constellation system.
The O3b system adopts an on-satellite transparent forwarding system, and the satellite of the system only performs simple filtering, frequency conversion and amplification on signals, and is a traditional "bent pipe" satellite which is intended to enhance signals. The satellite does not perform any processing on the information and does not have any information exchange capability. Therefore, the ground gateway station of the O3b system takes charge of all the functions of information processing, routing and exchanging of the system, and the system must complete information exchange between satellite terminals in a mode of "double hop" (satellite terminal-satellite-gateway station-satellite terminal). Because China lacks foreign gateway stations, and simultaneously, in consideration of system security, an on-satellite switching system is required to be adopted and inter-satellite links exist between adjacent satellites, service communication between satellite user terminals is completed only in a single-hop (satellite terminal-satellite terminal) mode without passing through the ground gateway stations, and information transmission of the satellite system is safer, more flexible and more efficient. At present, an MEO constellation broadband satellite communication system and a communication method adopting an on-satellite switching system are not available.
Disclosure of Invention
In view of this, embodiments of the present invention provide a satellite communication method, an apparatus, and a satellite communication system, so as to solve the problem that in the prior art, an MEO constellation broadband satellite communication system cannot adopt an on-satellite channelization switching system to complete satellite communication.
Therefore, the embodiment of the invention provides the following technical scheme:
in a first aspect of the present invention, a satellite communication method is provided, which is applied to a network operation control center, and includes: respectively receiving detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal; acquiring identification information of one or more MEO satellites serving the source satellite terminal and the target satellite terminal according to the detection message; and configuring an on-satellite channelized exchange path according to the identification information, and sending the on-satellite channelized exchange path to the one or more MEO satellites, so that the one or more MEO satellites send data from the source satellite terminal to the target satellite terminal according to the on-satellite channelized exchange path.
With reference to the first aspect of the present invention, in a first implementation manner of the first aspect of the present invention, the on-satellite channelized switch path is further configured to instruct to send data received from an designated incoming channel of the MEO satellite to a corresponding designated outgoing channel.
With reference to the first aspect of the present invention, in the second embodiment of the first aspect of the present invention, or with reference to the first embodiment of the first aspect of the present invention, in the third embodiment of the first aspect of the present invention, the method further comprises: receiving resource allocation request information from the source satellite terminal; and allocating resources to the source satellite terminal according to the resource allocation request information, so that the source satellite terminal transmits data by using the allocated resources.
In a second aspect of the present invention, a satellite communication method is further provided, including: receiving an on-board channelized switched path from a network operation control center; and sending the data received from the source satellite terminal to a target satellite terminal corresponding to the source satellite terminal according to the on-satellite channelized exchange path.
In combination with the second aspect of the present invention, in the first embodiment of the second aspect of the present invention, the method further comprises: and sending the data received from the appointed incoming channel of the MEO satellite to the corresponding appointed outgoing channel according to the on-satellite channelized exchange path.
In a third aspect of the present invention, a satellite communication device is further provided, which is applied to a network operation control center, and includes: the system comprises a first receiving module, a second receiving module and a third receiving module, wherein the first receiving module is used for respectively receiving detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal; an obtaining module, configured to obtain, according to the probe message, identification information of one or more MEO satellites serving the source satellite terminal and the destination satellite terminal; and the configuration module is used for configuring an on-satellite channelized exchange path according to the identification information and sending the on-satellite channelized exchange path to the one or more MEO satellites so that the one or more MEO satellites can send data from the source satellite terminal to the destination satellite terminal according to the on-satellite channelized exchange path.
With reference to the third aspect of the present invention, in a first embodiment of the third aspect of the present invention, the on-satellite channelized switched path is further configured to instruct to transmit data received from an assigned incoming channel of the MEO satellite to a corresponding assigned outgoing channel.
With reference to the third aspect of the present invention, in a second embodiment of the third aspect of the present invention, or with reference to the first embodiment of the third aspect of the present invention, in a third embodiment of the third aspect of the present invention, the apparatus further comprises: a second receiving module, configured to receive resource allocation request information from the source satellite terminal; and the allocation module is used for allocating resources to the source satellite terminal according to the resource allocation request information so that the source satellite terminal transmits data by using the allocated resources.
In a fourth aspect of the present invention, a satellite communication device is further provided, which is applied to an MEO satellite, and includes: the receiving module is used for receiving the on-satellite channelized switching path from the network operation control center; and the first sending module is used for sending the data received from the source satellite terminal to a target satellite terminal corresponding to the source satellite terminal according to the on-satellite channelized exchange path.
With reference to the fourth aspect of the present invention, in the first embodiment of the fourth aspect of the present invention, the apparatus further comprises: and the second sending module is used for sending the data received from the appointed incoming channel of the MEO satellite to the corresponding appointed outgoing channel according to the on-satellite channelized exchange path.
In a fifth aspect of the present invention, there is provided a satellite communication system, comprising: a network operations control center and one or more MEO satellites; the network operation control center respectively receives detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal; the network operation control center acquires identification information of one or more MEO satellites serving the source satellite terminal and a target satellite terminal corresponding to the source satellite terminal according to the detection message; the network operation control center configures an on-satellite channelized exchange path according to the identification information and sends the on-satellite channelized exchange path to the one or more MEO satellites; and the MEO satellite or the MEO satellites transmit data from the source satellite terminal to the target satellite terminal according to the on-satellite channelized switching path.
The technical scheme of the embodiment of the invention has the following advantages:
the embodiment of the invention provides a satellite communication method, a satellite communication device and a satellite communication system. Respectively receiving detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying a source satellite terminal and the destination satellite terminal; acquiring identification information of one or more MEO satellites serving a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal according to a detection message, configuring an on-satellite channelized exchange path according to the identification information, and sending the on-satellite channelized exchange path to one or more MEO satellites, so that one or more MEO satellites send data from the source satellite terminal to the target satellite terminal according to the on-satellite channelized exchange path, and sending the on-satellite channelized exchange path to the MEO satellites through a network operation control center, so that single-pick communication among the satellite terminals can be realized without participation of a gateway station, the problem that an MEO constellation broadband satellite communication system in the prior art cannot complete satellite communication by adopting an on-satellite channelized exchange system is solved, analog-to-digital conversion, digital channelization and subchannel exchange are only completed on the satellite, on-satellite processing is relatively simple, and reliability is high, The method has strong adaptability to the communication system, reduces the satellite complexity, and reduces the cost for constructing and maintaining the ground station and the occupied resources.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method of satellite communication according to an embodiment of the invention;
FIG. 2 is a schematic diagram of MEO satellite internal data transmission according to an embodiment of the invention;
FIG. 3 is another flow chart of a method of satellite communication according to an embodiment of the invention;
FIG. 4 is yet another flow chart of a method of satellite communication according to an embodiment of the present invention;
fig. 5 is a block diagram of a satellite communication device according to an embodiment of the present invention;
fig. 6 is another block diagram of a satellite communication device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a satellite communication system according to an embodiment of the invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In this embodiment, a satellite communication method is provided, which is applied to a network operation control center, and fig. 1 is a flowchart of a satellite communication method according to an embodiment of the present invention, as shown in fig. 1, where the flowchart includes the following steps:
step S101, respectively receiving detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal; specifically, before that, the satellite terminal sends a network access registration request to a network operation control center through a common signaling channel in a random access mode; after receiving a network access registration request of the satellite terminal, the network operation control center performs authentication and certification on the satellite terminal, and after the authentication is passed, the network operation control center feeds back confirmation information to the satellite terminal; the satellite terminal periodically sends a detection message to the network operation control center through a common signaling channel; when the satellite terminal has service data to be sent, sending resource allocation request information to a network operation control center, wherein the resource allocation request information comprises the service volume to be sent or the required service rate, the number of a target satellite terminal and the like; the network operation control center allocates time-frequency resources to the source satellite terminal according to the requested service volume or the required service rate, and feeds back resource allocation information to the source satellite terminal, that is, the network operation control center receives resource allocation request information from the source satellite terminal, and allocates resources to the source satellite terminal according to the resource allocation request information, so that the source satellite terminal transmits data by using the allocated resources.
Step S102, acquiring identification information of one or more MEO satellites serving a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal according to the detection message;
and S103, configuring an on-satellite channelized exchange path according to the identification information, and sending the on-satellite channelized exchange path to the one or more MEO satellites, so that the one or more MEO satellites send data from the source satellite terminal to the target satellite terminal according to the on-satellite channelized exchange path. Namely, the MEO satellite completes the on-satellite switching according to the channelized switching configuration information, and the communication between two satellite terminals or between two MEO satellites can be realized through the satellite without the participation of a gateway station.
Through the steps, the network operation control center is adopted to distribute the on-satellite channelized exchange path for each MEO satellite, and each MEO satellite is controlled to transmit the service data sent by the source satellite terminal until the service data are finally forwarded to the target satellite terminal, so that the method has moderate satellite number, technical complexity and communication performance. The satellite on-board processing is relatively simple, the reliability is high, the adaptability to a communication system is strong, the satellite complexity is reduced, and the cost for building and maintaining a ground station and the occupied resources are reduced.
In the process that the on-board channelized switch path routes the data transmitted from the source satellite terminal to the destination satellite terminal, the on-board channelized switch path is also used for indicating that the data received from the designated incoming channel of the MEO satellite is transmitted to the corresponding designated outgoing channel. And the network operation control center finishes on-satellite channelized exchange path planning according to the MEO satellite information serving for the source satellite terminal and the target satellite terminal at present and feeds back on-satellite channelized exchange configuration information to the related MEO satellite. The specific process can be referred to as follows: assume that the MEO satellite constellation consists of 5 MEO satellites, with adjacent MEO satellites having inter-satellite links, the satellite serving the source satellite terminal being MEO5 in the constellation, and the satellite serving the destination satellite terminal being MEO2 in the constellation. As shown in fig. 2.
When the source satellite terminal has service to be sent to the destination satellite terminal, the network operation control center completes the on-satellite channelized switching path planning according to the connection relationship between the MEO5 and the MEO2, namely, the on-satellite channelized switching path is switched to the MEO5 outgoing channel 18 through the MEO5 incoming channel 1, is switched to the MEO1 outgoing channel 18 through the MEO1 incoming channel 18, and is switched to the MEO2 outgoing channel 1 through the MEO2 incoming channel 18. As shown by the broken lines in fig. 2.
And the network operation control center respectively sends the on-satellite channelized exchange configuration information of the three satellites of MEO5, MEO1 and MEO2 to corresponding satellites. After receiving the signals from the incoming channel, the satellite-borne channelized switch payload switches the signals to the corresponding outgoing channel according to the switch configuration information, that is, the MEO5 switches the received signals from the incoming channel 1 to the outgoing channel 18, the MEO1 switches the received signals from the incoming channel 18 to the outgoing channel 18, and the MEO2 switches the received signals from the incoming channel 18 to the outgoing channel 1. And the signal sent by the source satellite terminal is finally received by the target satellite terminal after the on-satellite channelization exchange.
In this embodiment, another satellite communication method is provided, which is applied to an MEO satellite, and fig. 3 is another flowchart of the satellite communication method according to the embodiment of the present invention, as shown in fig. 3, where the flowchart includes the following steps:
step S301, receiving an on-satellite channelized exchange path from a network operation control center;
step S302, data received from a source satellite terminal is sent to a target satellite terminal corresponding to the source satellite terminal according to the on-satellite channelized exchange path.
Through the steps, the network operation control center is adopted to distribute the on-satellite channelized exchange path for each MEO satellite, and each MEO satellite is controlled to transmit the service data sent by the source satellite terminal until the service data are finally forwarded to the target satellite terminal, so that the method has moderate satellite number, technical complexity and communication performance. The satellite on-board processing is relatively simple, the reliability is high, the adaptability to a communication system is strong, the satellite complexity is reduced, and the cost for building and maintaining a ground station and the occupied resources are reduced.
As shown in fig. 2, data received from an assigned inbound channel of an MEO satellite is transmitted to a corresponding assigned outbound channel according to an on-board channelized switched path.
The following is described in detail with reference to a complete data transmission diagram, as shown in fig. 4: (1) the satellite terminal 1 and the satellite terminal 2 send network access registration requests to a network operation control center through a common signaling channel in a random access mode;
(2) after receiving the network access registration requests of the satellite terminal 1 and the satellite terminal 2, the network operation control center performs authentication and certification on the satellite terminal 1 and the satellite terminal 2, and after the authentication is passed, the network operation control center feeds back confirmation information to the satellite terminal 1 and the satellite terminal 2;
(3) the satellite terminal 1 and the satellite terminal 2 periodically send a detection message to a network operation control center through a common signaling channel, wherein the message comprises the number of the satellite terminal;
(4) the network operation control center determines the MEO satellites currently serving the satellite terminal 1 and the satellite terminal 2 by receiving the message;
(5) when service data needs to be sent, the satellite terminal 1 sends resource allocation request information to a network operation control center, wherein the resource allocation request information comprises the number of a target satellite terminal (equivalent to the satellite terminal 2) and the number of the service volume to be sent or the required service rate;
(6) the network operation control center allocates time-frequency resources to the source satellite terminal according to the requested service volume or the required service rate, and feeds back resource allocation information to the source satellite terminal;
(7) the network operation control center finishes on-satellite channelized exchange path planning according to the MEO satellite information serving for the source satellite terminal and the target satellite terminal at present, and feeds back on-satellite channelized exchange configuration information to a related MEO satellite;
(8) the source satellite terminal sends service data on the allocated time-frequency resources;
(9) and the MEO satellite completes the on-satellite switching according to the channelized switching configuration information and finally forwards the service data to a target satellite terminal.
In this embodiment, a satellite communication device is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and the description of the device already made is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 5 is a block diagram of a satellite communication device according to an embodiment of the present invention, which is applied to a network operation control center, and as shown in fig. 5, the satellite communication device includes: a first receiving module 51, configured to receive probe messages from a source satellite terminal and a destination satellite terminal corresponding to the source satellite terminal, respectively; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal; an obtaining module 52, configured to obtain, according to the probe message, identification information of one or more MEO satellites serving the source satellite terminal and a destination satellite terminal corresponding to the source satellite terminal; a configuration module 53, configured to configure an on-satellite channelized switching path according to the identification information, and send the on-satellite channelized switching path to the one or more MEO satellites, so that the one or more MEO satellites send data from the source satellite terminal to the destination satellite terminal according to the on-satellite channelized switching path.
Optionally, the on-satellite channelized switch path is further used to instruct transmission of data received from an assigned in-channel of the MEO satellite to a corresponding assigned out-channel.
Optionally, the apparatus further comprises: a second receiving module for receiving resource allocation request information from the source satellite terminal; and the allocation module is used for allocating resources to the source satellite terminal according to the resource allocation request information so that the source satellite terminal transmits data by using the allocated resources.
Further functional descriptions of the modules are the same as those of the corresponding embodiments, and are not repeated herein.
In this embodiment, another satellite communication device is provided, which is used to implement the foregoing embodiments and preferred embodiments, and the description of the device is omitted for brevity. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 6 is another block diagram of a satellite communication device according to an embodiment of the present invention, applied to an MEO satellite, and shown in fig. 6, including: a receiving module 61, configured to receive an on-satellite channelized switch path from a network operation control center; and a first sending module 62, configured to send the data received from the source satellite terminal to a destination satellite terminal corresponding to the source satellite terminal according to the on-satellite channelized switching path.
Optionally, the second sending module is configured to send the data received from the designated incoming channel of the MEO satellite to the corresponding designated outgoing channel according to the on-satellite channelized switch path.
Further functional descriptions of the modules are the same as those of the corresponding embodiments, and are not repeated herein.
There is also provided in an alternative embodiment, a satellite communication system, as shown in fig. 7, comprising: the system comprises an MEO orbit broadband communication satellite constellation, a satellite control center, a network operation control center, a gateway station and a satellite terminal. The MEO orbit broadband communication satellite constellation consists of a plurality of broadband satellites which work in an MEO orbit, realize global coverage, have channelized exchange loads and inter-satellite links and enable orbital plane satellites to be networked in an independent space; the satellite control center monitors and controls the on-orbit satellite, receives the downlink telemetering data of the satellite, generates a remote control command and sends the remote control command to the satellite; the network operation control center is responsible for network management and control functions of the whole satellite communication system; the gateway station completes the interconnection and intercommunication between the satellite communication system and the ground network through various standard or special interface devices; satellite terminals include various types of dedicated broadband satellite communication user terminals. Specifically, a network operation control center respectively receives detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal; the network operation control center acquires identification information of one or more MEO satellites serving a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal according to the detection message; the network operation control center configures an on-satellite channelized exchange path according to the identification information and sends the on-satellite channelized exchange path to the one or more MEO satellites; one or more MEO satellites transmit data from the source satellite terminal to the destination satellite terminal according to the on-satellite channelized switched path.
Through the satellite communication system, the network operation control center is adopted to distribute the on-satellite channelized exchange path for each MEO satellite, and each MEO satellite is controlled to transmit the service data sent by the source satellite terminal until the service data is finally forwarded to the target satellite terminal, so that the satellite communication system has moderate satellite number, technical complexity and communication performance. The space section adopts a plurality of MEO satellites to cover the whole world, can reduce the communication interruption probability and simultaneously meet the requirements of personal broadband satellite communication on lower service cost, smaller time delay, high utilization rate, high quality, high reliability and the like. The satellite on-board processing is relatively simple, the reliability is high, the adaptability to a communication system is strong, the satellite complexity is reduced, and the cost for building and maintaining a ground station and the occupied resources are reduced.
The MEO orbit broadband communication satellite constellation consists of a plurality of MEO orbit satellites, covers the whole world, and users in a coverage area can obtain service from one satellite at any time, so that the probability of communication interruption is reduced. And the communication connection with the ground is realized through the wide-area multi-beam load. The channelized exchange load is configured on the satellite, and the satellites are provided with inter-satellite links, so that independent space networking of the satellites with respective orbital planes is realized, and the requirement of space networking for land falling is met.
The satellite control center adjusts the orbit of the satellite by collecting the data of power supply voltage, current, temperature, stability and other operation characteristics of the satellite, maintains the distribution of the constellation, realizes the planning, management and measurement and control of the on-orbit operation constellation, and performs constellation deployment in the constellation construction stage and constellation maintenance in the constellation operation stage so as to ensure the normal work of the satellite and the constellation.
The network operation control center is used for realizing centralized management, the operation control function of the whole network is physically distributed in a satellite-borne network control agent and a terminal network control agent besides the network operation control center, the satellite-borne network control agent and the terminal network control agent are communicated with the ground network control center, the information query request from the network operation control center is responded, data is collected and sent to the network operation control center, and the configuration command from the network operation control center is executed.
And the gateway station is used for realizing interconnection and intercommunication with the ground network.
The satellite terminal is various special broadband satellite communication user terminals, such as a fixed terminal, a vehicle-mounted terminal, a ship-mounted terminal, a portable terminal, a data acquisition terminal and the like.
The MEO constellation broadband communication satellite of the satellite switching system has satellite channelized switching capacity, and communication between two satellite terminals or between two MEO satellites can be realized through the satellite without the participation of a gateway station.
The MEO constellation broadband communication satellite system of the satellite switching system adopts a DVB-RCS communication system.
The MEO constellation broadband communication satellite of the satellite switching system adopts Ka frequency band resources aiming at the transmission requirement of high-speed services such as videos.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. A satellite communication method applied to a network operation control center is characterized by comprising the following steps:
respectively receiving detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal;
acquiring identification information of one or more MEO satellites serving the source satellite terminal and the target satellite terminal according to the detection message;
receiving resource allocation request information from a source satellite terminal;
allocating resources to the source satellite terminal according to the resource allocation request information so that the source satellite terminal transmits data by using the allocated resources;
and configuring an on-satellite channelized switching path according to the identification information of the one or more MEO satellites, and sending the on-satellite channelized switching path to the one or more MEO satellites, so that the one or more MEO satellites send data from the source satellite terminal to the destination satellite terminal according to the on-satellite channelized switching path.
2. The method of claim 1, wherein the on-board channelized switch path is further configured to direct data received from an designated in-channel of the MEO satellite to be sent to a corresponding designated out-channel.
3. A satellite communication method applied to an MEO satellite is characterized by comprising the following steps:
receiving an on-board channelized switched path from a network operation control center;
transmitting data received from a source satellite terminal to a destination satellite terminal corresponding to the source satellite terminal according to the on-satellite channelized switched path,
wherein the source satellite terminal and the destination satellite terminal send probe messages to the network operations control center before receiving the on-board channelized switched path from the network operations control center, the probe message includes information identifying the source satellite terminal and the destination satellite terminal, the network operation control center acquires identification information of one or more MEO satellites serving the source satellite terminal and the destination satellite terminal according to the probe message, the network operation control center allocates resources to a source satellite terminal according to resource allocation request information when receiving the resource allocation request information from the source satellite terminal, and enabling the source satellite terminal to transmit data by using the allocated resources, configuring an on-satellite channelized switching path according to the identification information of the one or more MEO satellites, and sending the on-satellite channelized switching path to the one or more MEO satellites.
4. The method of claim 3, further comprising:
and the one or more MEO satellites transmit the data received from the designated incoming channel of the MEO satellite to the corresponding designated outgoing channel according to the on-satellite channelized switching path.
5. A satellite communication device applied to a network operation control center, comprising:
the system comprises a first receiving module, a second receiving module and a third receiving module, wherein the first receiving module is used for respectively receiving detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal;
an obtaining module, configured to obtain, according to the probe message, identification information of one or more MEO satellites serving the source satellite terminal and the destination satellite terminal;
a second receiving module, configured to receive resource allocation request information from a source satellite terminal;
the allocation module is used for allocating resources to the source satellite terminal according to the resource allocation request information so that the source satellite terminal transmits data by using the allocated resources;
and the configuration module is used for configuring an on-satellite channelized switching path according to the identification information of the one or more MEO satellites and sending the on-satellite channelized switching path to the one or more MEO satellites so that the one or more MEO satellites can send data from the source satellite terminal to the target satellite terminal according to the on-satellite channelized switching path.
6. The apparatus of claim 5, wherein the on-board channelized switch path is further configured to direct data received from an designated in-channel of the MEO satellite to be sent to a corresponding designated out-channel.
7. A satellite communication device for use with MEO satellites, comprising:
the receiving module is used for receiving the on-satellite channelized switching path from the network operation control center;
a first sending module, configured to send data received from a source satellite terminal to a destination satellite terminal corresponding to the source satellite terminal according to the on-satellite channelized switch path,
wherein, before the receiving module receives the on-satellite channelized switching path from the network operation control center, the source satellite terminal and the destination satellite terminal send probe messages to the network operation control center, the probe messages include information for identifying the source satellite terminal and the destination satellite terminal, and the network operation control center acquires identification information of one or more MEO satellites serving the source satellite terminal and the destination satellite terminal according to the probe messages, the network operation control center allocates resources to the source satellite terminal according to the resource allocation request information when receiving resource allocation request information from the source satellite terminal, so that the source satellite terminal transmits data by using the allocated resources, and configures the on-satellite channelized switching path according to the identification information of the one or more MEO satellites, and transmitting the on-satellite channelized switched path to the one or more MEO satellites.
8. The apparatus of claim 7, further comprising:
and the second sending module is used for sending the data received from the appointed incoming channel of the MEO satellite to the corresponding appointed outgoing channel according to the on-satellite channelized exchange path.
9. A satellite communication system, comprising: a network operations control center and one or more MEO satellites;
the network operation control center respectively receives detection messages from a source satellite terminal and a target satellite terminal corresponding to the source satellite terminal; wherein the probe message includes information identifying the source satellite terminal and the destination satellite terminal; the network operation control center acquires identification information of one or more MEO satellites serving the source satellite terminal and a target satellite terminal corresponding to the source satellite terminal according to the detection message;
the network operation control center receives resource allocation request information from a source satellite terminal;
the network operation control center allocates resources to the source satellite terminal according to the resource allocation request information, so that the source satellite terminal transmits data by using the allocated resources;
the network operation control center configures an on-satellite channelized exchange path according to the identification information of the one or more MEO satellites, and sends the on-satellite channelized exchange path to the one or more MEO satellites;
and the MEO satellite or the MEO satellites transmit data from the source satellite terminal to the target satellite terminal according to the on-satellite channelized switching path.
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| CN109039434B (en) * | 2018-09-13 | 2021-02-09 | 上海垣信卫星科技有限公司 | Method for secure satellite communication |
| CN109861740B (en) * | 2019-01-28 | 2020-08-04 | 北京航空航天大学 | Satellite network communication method, device and computer readable storage medium |
| CN113644949B (en) * | 2020-04-27 | 2022-10-18 | 华为技术有限公司 | Method and apparatus for satellite communication |
| CN112260745A (en) * | 2020-10-15 | 2021-01-22 | 重庆金美通信有限责任公司 | Rapid access method for low-earth-orbit satellite system |
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| CN100559737C (en) * | 2007-03-16 | 2009-11-11 | 北京航空航天大学 | Space-based mobile communication system and communication means |
| CN101552933B (en) * | 2009-05-04 | 2012-11-07 | 中国人民解放军空军工程大学 | Optical network self-adapting route system for low/middle orbit double-layer satellite and calculating method of agent route |
| CN102413590B (en) * | 2011-08-25 | 2014-05-28 | 西安空间无线电技术研究所 | Global satellite communication system and method |
| CN102571188A (en) * | 2012-02-21 | 2012-07-11 | 西安电子科技大学 | Signaling processing method and system for satellite communication network with satellite switch capability |
| CN103391130B (en) * | 2012-05-07 | 2016-12-14 | 电信科学技术研究院 | Onboard switching implementation method in a kind of satellite mobile communication system and equipment |
| US9130644B2 (en) * | 2013-03-15 | 2015-09-08 | Emc Satcom Technologies, Llc | Power booster in an MEO setting |
| CN103685023B (en) * | 2013-11-18 | 2017-01-18 | 中国空间技术研究院 | Broadband satellite communication system and method based on satellite-borne IP switching |
| CN103916177B (en) * | 2014-01-23 | 2017-12-05 | 北京邮电大学 | Communication means based on GEO IGSO/MEO double layer minipellets |
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