CN115361059A - Satellite communication system and method based on wireless ad hoc network - Google Patents
Satellite communication system and method based on wireless ad hoc network Download PDFInfo
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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- H04B7/185—Space-based or airborne stations; Stations for satellite systems
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
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Abstract
The embodiment of the invention provides a satellite communication system and a method based on a wireless ad hoc network, which belong to the technical field of communication, the system comprises an intra-domain satellite terminal and a plurality of communication terminals, the intra-domain satellite terminal comprises a wireless routing module, the plurality of communication terminals are in communication connection with the intra-domain satellite terminal through the wireless routing module, and the intra-domain satellite terminal is used for receiving wireless data sent by any communication terminal through the wireless routing module, converting the wireless data into satellite data, sending the satellite data to a target satellite terminal through a satellite network, converting the received satellite data sent by any external satellite terminal into wireless data, and sending the wireless data to the target communication terminal in the plurality of communication terminals through the wireless routing module, so that the communication terminal without the satellite communication function can perform satellite communication with the external satellite terminal, the cost of satellite communication can be greatly reduced, and the communication use range can be improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a satellite communication system and a satellite communication method based on wireless ad hoc networks.
Background
Satellite communication refers to communication between a plurality of satellite terminals (ground stations) on the ground by using a satellite as a relay station to transmit microwave signals, and the main purpose of satellite communication is to realize seamless coverage on the ground. Since the satellite operates in an orbit of hundreds, thousands or even tens of thousands of kilometers, the coverage area of the satellite communication system is much larger than that of a general mobile communication system.
Satellite communication is realized mainly by means of satellite terminals and satellites, a single satellite terminal (such as an skyway terminal) is expensive, and the price of a package of satellite communication is high, so that the cost of the satellite communication is high. And, the communication use range of a single satellite terminal is small. Therefore, how to reduce the cost of satellite communication and increase the communication range is a significant problem.
Disclosure of Invention
In view of the above, the present invention provides a satellite communication system and method based on wireless ad hoc network, which can reduce the cost of satellite communication and increase the communication range of satellite communication.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions.
In a first aspect, an embodiment of the present invention provides a satellite communication system based on a wireless ad hoc network, including an intra-domain satellite terminal and a plurality of communication terminals, where the intra-domain satellite terminal includes a wireless routing module, and the plurality of communication terminals are in communication connection with the intra-domain satellite terminal through the wireless routing module;
the intra-domain satellite terminal is used for receiving wireless data sent by any communication terminal through the wireless routing module, converting the wireless data into satellite data and sending the satellite data to a target satellite terminal through a satellite network;
the intra-domain satellite terminal is further configured to convert satellite data received from any external satellite terminal into wireless data, and send the wireless data to a target communication terminal among the plurality of communication terminals through the wireless routing module.
Furthermore, the intra-domain satellite terminal also comprises a data serial port management module and a satellite communication module, wherein the data serial port management module is in communication connection with the wireless routing module and the satellite communication module;
the satellite communication module is used for receiving satellite data sent by an external satellite terminal, sending the satellite data to the data serial port management module and sending the satellite data sent by the data serial port management module to a target satellite terminal;
the data serial port management module is used for converting the wireless data sent by the wireless routing module into satellite data and then sending the satellite data to the satellite communication module, and is also used for converting the satellite data sent by the satellite communication module into wireless data and then sending the wireless data to the wireless routing module.
Furthermore, the intra-domain satellite terminal also comprises a main control module;
the main control module is used for controlling the wireless routing module to send the call request converted into wireless data to the communication terminal with the highest priority level in the plurality of communication terminals when the satellite communication module receives satellite data about the call request sent by an external satellite terminal;
the main control module is further configured to control the wireless routing module to select a communication terminal with the highest priority as a processing device when the wireless routing module receives wireless data about a call sent by two or more communication terminals at the same time, and control the wireless routing module to send the wireless data of the processing device to the data serial port management module.
Further, the main control module is further configured to control the wireless routing module to send the short messages converted into wireless data to the plurality of communication terminals in a group when the satellite communication module receives satellite data about the short messages sent by an external satellite terminal;
the main control module is further configured to control the wireless routing module to sequentially send the wireless data to the data serial port management module according to the priority order of the plurality of communication terminals when the wireless routing module simultaneously receives the wireless data about the short messages sent by the plurality of communication terminals.
Furthermore, a communication table is prestored in the intra-domain satellite terminal, and the communication table records identification information of a plurality of communication terminals;
and the main control module is also used for controlling the wireless routing module to communicate only with the communication terminal corresponding to the identification information in the communication table.
Further, the main control module is further configured to control the wireless routing module to share data of the plurality of communication terminals.
Furthermore, the intra-domain satellite terminal also comprises a display control module;
and the display control module is used for monitoring and acquiring the working states of the intra-domain satellite terminal, the wireless routing module and the satellite communication module and displaying the working states.
Further, the satellite communication module and the wireless routing module each include an antenna unit.
In a second aspect, an embodiment of the present invention provides a satellite communication method based on a wireless ad hoc network, which is applied to an intra-domain satellite terminal according to the first aspect, where the method includes:
receiving wireless data sent by any communication terminal, wherein the wireless data comprises a target identifier;
converting the wireless data into satellite data, and sending the satellite data to a target satellite terminal corresponding to the target identification through a satellite network;
receiving satellite data sent by any external satellite terminal, converting the satellite data into wireless data, and sending the wireless data to a target communication terminal in a plurality of communication terminals through the wireless routing module.
Further, the method further comprises:
when wireless data about conversation sent by two or more than two communication terminals are received at the same time, the communication terminal with the highest priority is selected as processing equipment, the wireless data of the processing equipment is converted into satellite data, and the satellite data is sent to a target satellite terminal through a satellite network;
when satellite data about a call request transmitted by an external satellite terminal is received, the satellite data is converted into wireless data, and the wireless data is transmitted to a communication terminal with the highest priority among a plurality of communication terminals.
According to the satellite communication system and method based on the wireless ad hoc network, the intra-domain satellite terminal is communicated with the plurality of communication terminals through the wireless routing module, and the intra-domain satellite terminal realizes conversion between wireless data and satellite data, so that any communication terminal can perform satellite communication with any external satellite terminal through the intra-domain satellite terminal, namely the communication terminal without the satellite communication function can perform satellite communication with the external satellite terminal through the intra-domain satellite terminal, the cost of satellite communication can be greatly reduced, and the communication use range of the satellite communication is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows one of the block schematic diagrams of a satellite communication system based on a wireless ad hoc network provided by the embodiment of the invention.
Fig. 2 shows a second block diagram of a satellite communication system based on a wireless ad hoc network according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating a method for satellite communication based on a wireless ad hoc network according to an embodiment of the present invention.
Fig. 4 shows a schematic flow diagram of part of the sub-steps of step S102 in fig. 3.
Fig. 5 shows a schematic flow chart of a part of the sub-steps of step S103 in fig. 3.
Reference numerals: 100-a satellite communication system based on wireless ad hoc networks; 110-a communication terminal; 120-intra-domain satellite terminals; 121-wireless routing module; 122-a satellite communication module; 123-a data serial port management module; 124-a master control module; 125-an antenna element; 126-display control module; 130-external satellite terminals.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Satellite communication refers to communication between a plurality of satellite terminals (ground stations) on the ground by using a satellite as a relay station to transmit microwave signals, and the main purpose of satellite communication is to realize seamless coverage on the ground. Since the satellite operates in an orbit of hundreds, thousands or even tens of thousands of kilometers, the coverage area of the satellite communication system is much larger than that of a general mobile communication system.
The satellite communication system is a satellite mobile communication system based on a synchronous orbit satellite, has the characteristics of strong communication capacity, strong maneuvering performance, good concealment and convenient use, and has wide military and civil application backgrounds.
For example, the satellite mobile communication system of Tiantong No. one is already covered in China completely, has no blind spot, is not influenced by factors such as terrain and the like, and can realize seamless coverage on oceans, mountainous areas, plateaus and the like from top to bottom. Meanwhile, the sky leads to the working frequency band signal transmission loss little, is favorable to the miniaturization of terminal equipment, portable. In addition, the Tiantong can replace part of the Beidou short message function besides the voice and short message function, has higher real-time performance compared with a Beidou system, and can provide high-quality quasi-broadband connection service for wide-sensitive application.
Satellite communication is mainly realized by means of a satellite terminal and a satellite, and the satellite terminal refers to a device equipped with a function module (for example, a heaven card) for transceiving satellite communication data. A single satellite terminal (e.g., an skynet terminal) is expensive, and the package cost of satellite communication is high, so the cost of satellite communication is high. And, the communication use range of a single satellite terminal is small. Therefore, how to reduce the cost of satellite communication and increase the communication range is a significant problem.
Based on the above consideration, the embodiments of the present invention provide a satellite communication scheme based on a wireless ad hoc network, which can reduce the cost of implementing satellite communication for users, and improve the communication use range of implementing satellite communication for a single satellite terminal.
In one embodiment, referring to fig. 1, the wireless ad-hoc network-based satellite communication system 100 provided by the present invention includes an intra-domain satellite terminal 120 and a plurality of communication terminals 110, the intra-domain satellite terminal 120 includes a wireless routing module 121, and the plurality of communication terminals 110 are communicatively connected to the intra-domain satellite terminal 120 through the wireless routing module 121.
And an intra-domain satellite terminal 120 for receiving the wireless data transmitted from any one of the communication terminals 110 through the wireless routing module 121, converting the wireless data into satellite data, and transmitting the satellite data to a target satellite terminal through a satellite network.
The intra-domain satellite terminal 120 is further configured to convert the received satellite data transmitted from any external satellite terminal 130 into wireless data, and transmit the wireless data to the target communication terminal 110 of the plurality of communication terminals 110 through the wireless routing module 121.
One or more target communication terminals 110 may be provided.
It should be understood that the communication terminal 110 is a terminal that does not have a satellite communication function of its own.
In the satellite communication system 100 based on the wireless ad hoc network, the intra-domain satellite terminal 120 communicates with the plurality of communication terminals 110 through the wireless routing module 121, and the intra-domain satellite terminal 120 converts the wireless data into the satellite data, so that any communication terminal 110 can perform satellite communication with any external satellite terminal 130 through the intra-domain satellite terminal 120, that is, the communication terminal 110 without the satellite communication function can perform satellite communication with the external satellite terminal 130 through the intra-domain satellite terminal 120, thereby greatly reducing the cost of the user for realizing the satellite communication and improving the communication use range of the single satellite terminal for realizing the satellite communication.
The wireless routing module 121 may be any functional module for implementing wireless communication, for example, it may be a wifi module, a bluetooth module, or a near field communication module, and the present invention is not limited in particular.
In detail, the communication terminal 110 may be installed with an application program (app) related to satellite communication, and the application program may be developed based on an operating system platform of the communication terminal 110, for example, an android platform and an IOS platform. The communication terminal 110 can communicate with the intra-domain satellite terminal 120 by operating the application, so that the communication terminal 110 can implement services related to satellite communication, such as making a satellite call, sending a satellite short message, and using satellite data.
Through the wireless routing module 121, the plurality of communication terminals 110 are in the same network segment, and therefore, the plurality of communication terminals 110 can communicate with each other, for example, chat, file transmission, and the like. The plurality of communication terminals 110 may use a TCP/IP communication method to implement two-to-two communication. The communication terminal 110 connected to the wireless routing module 121 can see the current state of other communication terminals 110 in the same network segment.
Further, referring to fig. 2, the intra-domain satellite terminal 120 further includes a data serial port management module 123 and a satellite communication module 122, and the data serial port management module 123 may be in communication connection with the wireless routing module 121 and the satellite communication module 122 in a wired or wireless manner.
The satellite communication module 122 is configured to receive satellite data sent by the external satellite terminal 130, send the satellite data to the data serial port management module 123, and send the satellite data sent by the data serial port management module 123 to a target satellite terminal.
And the data serial port management module 123 is configured to convert the wireless data sent by the wireless routing module 121 into satellite data and send the satellite data to the satellite communication module 122, and is further configured to convert the satellite data sent by the satellite communication module 122 into wireless data and send the wireless data to the wireless routing module 121.
In detail, when the final target device of the wireless data (which may be a call instruction, call data, short message information, and the like) sent by any communication terminal 110 to the wireless routing module 121 is the external satellite terminal 130, the wireless routing module 121 transmits the wireless data to the data serial port management module 123. The data serial port management module 123 converts the wireless data into satellite data of an instruction that can be recognized by a satellite terminal and transmits the satellite data to the satellite communication module 122, and the satellite communication module 122 transmits the satellite data to a target satellite terminal through a satellite network.
When the satellite communication module 122 receives the satellite data transmitted from the external satellite terminal 130, the satellite data is transmitted to the data serial port management module 123. The data serial port management module 123 converts the satellite data into wireless data that can be recognized by the communication terminal 110, and then transmits the wireless data to the wireless routing module 121. The wireless routing module 121 transmits wireless data to a target communication terminal 110 among the plurality of communication terminals 110.
The data serial port management module 123 is configured to enable mutual conversion between the wireless data and the satellite data, so that the satellite communication module 122 is helpful to implement satellite communication between the communication terminal 110 and the external satellite terminal 130.
Normally, the satellite communication module 122 of the satellite terminal 120 supports satellite communication with only one external satellite terminal 130 within the same time domain. However, since there are a plurality of communication terminals 110 that communicate with the intra-domain satellite terminal 120 via the wireless routing module 121, it is easy to make a call with the external satellite terminal 130 by a plurality of communication terminals 110, or to communicate with only one communication terminal 110 when the external satellite terminal 130 transmits satellite data related to the call request to the intra-domain satellite terminal 120. In this case, communication disturbance is likely to occur.
To solve the problem of communication disturbance between satellites between a communication terminal 110 and an external satellite terminal 130. Referring to fig. 2, the intra-domain satellite terminal 120 further includes a main control module 124.
And a main control module 124, configured to control the wireless routing module 121 to send the call request converted into wireless data to the communication terminal 110 with the highest priority in the plurality of communication terminals 110 when the satellite communication module 122 receives satellite data about the call request sent by the external satellite terminal 130.
The main control module 124 is further configured to, when the wireless routing module 121 receives wireless data about a call sent by two or more communication terminals 110 at the same time, control the wireless routing module 121 to select the communication terminal 110 with the highest priority as a processing device, and control the wireless routing module 121 to send the wireless data of the processing device to the serial data port management module 123.
The priority of each communication terminal 110 may be set by a manager according to actual conditions.
The manner of acquiring the priority by the main control module 124 can be flexibly set, for example, the intra-domain satellite terminal 120 may be pre-recorded with the priority of all communication terminals 110 capable of communicating with the wireless routing module 121. Or each communication terminal 110 may record its own priority, and the main control module 124 may obtain the priority of each communication terminal 110 through the wireless routing module 121. The present embodiment is not particularly limited.
It should be understood that when the communication terminal 110 is selected, the communication data related to the subsequent call is transmitted to the communication terminal 110 until the call is ended.
In addition to the call, the communication terminal 110 may send and receive messages or commands between the intra-domain satellite terminal 120 and the external satellite terminal 130.
Therefore, the main control module 124 is further configured to control the wireless routing module 121 to send the short messages converted into the wireless data to the plurality of communication terminals 110 in a group when the satellite communication module 122 receives satellite data about the short messages sent by the external satellite terminal 130.
When the main control module 124 controls the wireless routing module 121 to send the short message group converted into the wireless data to the plurality of communication terminals 110, the plurality of communication terminals 110 may be all online communication terminals 110, or may be some communication terminals 110 with the highest priority.
The main control module 124 is further configured to control the wireless routing module 121 to sequentially send the wireless data to the data serial port management module 123 according to the priority order of the plurality of communication terminals 110 when the wireless routing module 121 simultaneously receives the wireless data about the short message sent by the plurality of communication terminals 110.
The data serial port management module 123 converts the wireless data into satellite data according to the arrival sequence of the wireless data, and sends the satellite data to the satellite communication module 122. The satellite communication module 122 sequentially transmits satellite data corresponding to each communication terminal 110 to the external satellite terminal 130 for target communication according to the order of arrival of the satellite data. At this time, the external satellite terminals 130 to which the targets of the respective communication terminals 110 communicate are different.
For example, the communication terminal 110 includes four, a, B, C, and D, and the priorities are: and a > B > C > D, when the four communication terminals 110 simultaneously initiate wireless data about short messages, the wireless data of the communication terminals 110 are first converted into satellite data and then transmitted to the target communication external satellite terminal 130, and similarly, the wireless data of B, C and D are sequentially processed.
When each communication terminal 110 communicates with the external satellite terminal 130, the communication method related to the short message may be used for communication other than the call.
To increase the wireless signal coverage of the wireless routing module 121, referring to fig. 2, the wireless routing module 121 includes an antenna unit 125.
In order to acquire a satellite network for transmitting and receiving radio frequency antennas associated with satellites, please continue to refer to fig. 2, the satellite communication module 122 further includes an antenna unit 125.
Further, in order to know the working states of the modules of the intra-domain satellite terminal 120, in a possible embodiment, please continue to refer to fig. 2, the intra-domain satellite terminal 120 further includes a display control module 126, and the display control module 126 is configured to monitor and acquire the working states of the intra-domain satellite terminal 120, the wireless routing module 121, and the satellite communication module 122, and display the working states.
The display control module 126 may include a monitoring unit and a display unit, and the monitoring unit may actively monitor the operating status of each module, including but not limited to the power of the intra-domain satellite terminal 120, the information receiving and transmitting status of the wireless routing module 121, the data receiving and transmitting status of the satellite communication module 122, and the data conversion status of the data serial port management module 123.
It is also possible for each module to actively report its own status to the display control module 126. The present embodiment is not particularly limited.
In addition, the display control module 126 may also be used to perform function setting of each module of the intra-domain satellite terminal 120, for example, to set the maximum connection number of the wireless routing module 121, that is, the data of the communication terminals 110 to which the wireless routing module 121 can only be connected at the same time is less than or equal to the maximum connection number.
Also for example, the priority of each communication terminal 110 may be set, or the communication terminals 110 to which the wireless routing module 121 can connect may be set.
In order to prevent other communication terminals 110 from stealing the satellite communication resources of the intra-domain satellite terminal 120 to a certain extent, in one possible embodiment, the intra-domain satellite terminal 120 further prestores a communication table, and the communication table records the identification information of a plurality of communication terminals 110.
And a main control module 124, configured to control the wireless routing module 121 to communicate only with the communication terminal 110 corresponding to the identification information in the communication table.
In addition, data can be shared between the communication terminals 110 connected to the wireless routing module 121. For example, after the communication terminal 110 sends data such as a file or a picture to be shared to the wireless routing module 121, the wireless routing module 121 transmits the data to another communication terminal 110, thereby implementing data sharing.
In order to avoid information leakage to some extent and improve information security, in a possible embodiment, the main control module 124 may further be configured to control the wireless routing module 121 to share data of the multiple communication terminals 110.
Specifically, the main control module 124 determines two or more designated communication terminals 110 that can be shared, and controls the wireless routing module 121 to perform data sharing only between the two or more designated communication terminals 110.
A local area network is formed among the plurality of communication terminals 110 connected to the wireless routing module 121, the communication terminals 110 in the local area network can implement data sharing, and the communication terminals 110 in the local area network can implement interconnection and intercommunication between each two communication terminals through an http protocol.
It should be understood that the intradomain satellite terminals 120 may be any one of satellite terminals such as heaven-earth satellite terminals, maritime satellite terminals, euro-star terminals, and iridium terminals.
The satellite communication system 100 based on the wireless ad hoc network realizes wireless routing networking with a plurality of communication terminals 110 through the wireless routing module 121 of the intra-domain satellite terminal 120, and embeds the satellite communication module 122 to build the satellite communication of the communication terminals 110. The communication terminals 110 in the local area network formed by the wireless routing networking can share the intra-domain satellite terminal 120 to provide a satellite network, and the communication terminals 110 in the local area network can make calls, send short messages and use data by using the satellite network.
One satellite terminal is realized to be used by a plurality of users together for the satellite network, one satellite terminal realizes the establishment of the local area network, and the communication terminals 110 in the local area network can realize information intercommunication and realize resource sharing. Equipment purchasing cost of the satellite terminal is reduced, and satellite communication cost is lowered. Compared with the existing satellite terminal communication mode, the invention can more reasonably utilize satellite resources. Meanwhile, the intra-domain satellite terminal 120 can manage the communication terminal 110 in the local area network through the established local area network, thereby improving information security.
In one embodiment, referring to fig. 3, the present invention further provides a satellite communication method based on wireless ad hoc network, which is applied to the intradomain satellite terminal 120 of the above embodiment, including the following steps,
s101, receives wireless data transmitted from any communication terminal 110.
Wherein the wireless data includes a target identification.
The target identifier may be a satellite communication card number of the target satellite terminal, or may be other identifiers.
And S102, converting the wireless data into satellite data, and sending the satellite data to a target satellite terminal corresponding to the target identifier through a satellite network.
S103, receiving satellite data transmitted from any external satellite terminal 130, converting the satellite data into wireless data, and transmitting the wireless data to a target communication terminal 110 among the plurality of communication terminals 110 through the wireless routing module 121.
Wherein any external satellite terminal 130 in S103 may be the target satellite terminal in S102. At this time, the satellite data is response data returned by the target satellite terminal with respect to the wireless data transmitted by the intra-domain satellite terminal 120.
The target communication terminal 110 may be one or more of the plurality of communication terminals 110.
By the above method, a plurality of communication terminals 110 without a satellite communication function can communicate with the external satellite terminal 130 through the intra-domain satellite terminal 120, thereby greatly reducing the cost of satellite communication and increasing the communication range of satellite communication.
Further, when the wireless data transmitted by the communication terminal 110 is data related to a call, referring to fig. 4, the method for satellite communication based on a wireless ad hoc network according to the present invention may further include the following steps. The following steps may also be partial sub-steps of step S102.
S1021, when receiving wireless data about a call transmitted from two or more communication terminals 110 at the same time, selects the communication terminal 110 with the highest priority as a processing device.
And S1022, converting the wireless data of the processing equipment into satellite data, and transmitting the satellite data to the target satellite terminal through the satellite network.
When the satellite data transmitted by the external satellite terminal 130 is data related to a call, referring to fig. 5, in one possible embodiment, the method for satellite communication based on wireless ad hoc network provided by the present invention may further include the following steps. The following steps may also be partial sub-steps of step S103.
S1031, when receiving the satellite data about the call request transmitted from the external satellite terminal 130, converts the satellite data into wireless data.
S1032 transmits the wireless data to the communication terminal 110 having the highest priority among the plurality of communication terminals 110.
Through the above steps S1021 to S1022, and S1031 to S1032, the communication terminal 110 that can have no satellite communication function can perform satellite telephone with the external satellite terminal 130 through the intra-domain satellite terminal 120 in order.
When the wireless data transmitted by the communication terminal 110 is data other than a call, the above step S102 may be implemented by: when the wireless data about the short messages transmitted by the plurality of communication terminals 110 is received at the same time, the wireless data is sequentially converted into satellite data according to the priority order of the plurality of communication terminals 110, and the satellite data is transmitted to the target satellite terminal.
The above step S103 can be implemented by: when receiving satellite data about the short message transmitted from the external satellite terminal 130, it is converted into wireless data and the wireless data is transmitted to the plurality of communication terminals 110 in a group.
Specific limitations on the wireless ad hoc network-based satellite communication method can be found in the above limitations on the wireless ad hoc network-based satellite communication system 100, and will not be described herein again.
The various modules in the intradomain satellite terminal 120 described above may be implemented in whole or in part in software, hardware, and combinations thereof. The modules may be embedded in hardware or independent from a processor in the intra-domain satellite terminal 120, or may be stored in a memory in the intra-domain satellite terminal 120 in software, so that the processor can call and execute operations corresponding to the modules.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A satellite communication system based on a wireless ad hoc network is characterized by comprising an intra-domain satellite terminal and a plurality of communication terminals, wherein the intra-domain satellite terminal comprises a wireless routing module, and the plurality of communication terminals are in communication connection with the intra-domain satellite terminal through the wireless routing module;
the intra-domain satellite terminal is used for receiving wireless data sent by any communication terminal through the wireless routing module, converting the wireless data into satellite data and sending the satellite data to a target satellite terminal through a satellite network;
the intra-domain satellite terminal is further used for converting the received satellite data sent by any external satellite terminal into wireless data and sending the wireless data to a target communication terminal in the plurality of communication terminals through the wireless routing module.
2. The wireless ad hoc network-based satellite communication system according to claim 1, wherein the intra-domain satellite terminal further comprises a data serial port management module and a satellite communication module, and the data serial port management module is in communication connection with the wireless routing module and the satellite communication module;
the satellite communication module is used for receiving satellite data sent by an external satellite terminal, sending the satellite data to the data serial port management module and sending the satellite data sent by the data serial port management module to a target satellite terminal;
the data serial port management module is used for converting the wireless data sent by the wireless routing module into satellite data and then sending the satellite data to the satellite communication module, and is also used for converting the satellite data sent by the satellite communication module into wireless data and then sending the wireless data to the wireless routing module.
3. The wireless ad-hoc network-based satellite communication system according to claim 2, wherein the intra-domain satellite terminal further comprises a master control module;
the main control module is used for controlling the wireless routing module to send the call request converted into the wireless data to a communication terminal with the highest priority level in the plurality of communication terminals when the satellite communication module receives satellite data about the call request sent by an external satellite terminal;
the main control module is further configured to control the wireless routing module to select a communication terminal with the highest priority as a processing device when the wireless routing module receives wireless data about a call sent by two or more communication terminals at the same time, and control the wireless routing module to send the wireless data of the processing device to the data serial port management module.
4. The wireless ad hoc network-based satellite communication system according to claim 3, wherein the main control module is further configured to control the wireless routing module to group-send the short messages converted into wireless data to the plurality of communication terminals when the satellite communication module receives satellite data about the short messages sent by an external satellite terminal;
the main control module is further configured to control the wireless routing module to sequentially send the wireless data to the data serial port management module according to the priority order of the plurality of communication terminals when the wireless routing module simultaneously receives the wireless data about the short messages sent by the plurality of communication terminals.
5. The wireless ad-hoc network-based satellite communication system according to claim 3, wherein the intra-domain satellite terminal prestores a communication table, and the communication table records identification information of a plurality of communication terminals;
the main control module is further configured to control the wireless routing module to communicate only with the communication terminal corresponding to the identification information in the communication table.
6. The wireless ad hoc network-based satellite communication system according to claim 3, wherein the main control module is further configured to control the wireless routing module to share data of the plurality of communication terminals.
7. The wireless ad-hoc network based satellite communication system according to any one of claims 1-6, wherein the intra-domain satellite terminal further comprises a display control module;
and the display control module is used for monitoring and acquiring the working states of the intra-domain satellite terminal, the wireless routing module and the satellite communication module and displaying the working states.
8. The wireless ad-hoc network based satellite communication system according to any one of claims 2-6, wherein the satellite communication module and the wireless routing module each comprise an antenna unit.
9. A satellite communication method based on wireless ad hoc network, applied to the intra-domain satellite terminal according to any one of claims 1-8, the method comprising:
receiving wireless data sent by any communication terminal, wherein the wireless data comprises a target identifier;
converting the wireless data into satellite data, and sending the satellite data to a target satellite terminal corresponding to the target identification through a satellite network;
receiving satellite data sent by any external satellite terminal, converting the satellite data into wireless data, and sending the wireless data to a target communication terminal in a plurality of communication terminals through the wireless routing module.
10. The wireless ad-hoc network-based satellite communication method according to claim 9, wherein the method further comprises:
when receiving wireless data about communication sent by two or more communication terminals at the same time, selecting the communication terminal with the highest priority as processing equipment, converting the wireless data of the processing equipment into satellite data, and sending the satellite data to a target satellite terminal through a satellite network;
when satellite data about a call request transmitted by an external satellite terminal is received, the satellite data is converted into wireless data, and the wireless data is transmitted to a communication terminal with the highest priority among a plurality of communication terminals.
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