CN114244421B - Communication system, method, device, apparatus and storage medium - Google Patents
Communication system, method, device, apparatus and storage medium Download PDFInfo
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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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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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
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
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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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18517—Transmission equipment in earth stations
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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
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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
- H04B7/18597—Arrangements for system physical machines management, i.e. for construction, operations control, administration, maintenance
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- Mobile Radio Communication Systems (AREA)
Abstract
The present disclosure provides a communication system, method, apparatus, device, and storage medium. The communication system includes: the system comprises core network equipment, a ground station, a low-orbit satellite system, a mobile carrier in motion, a portable base station and a user terminal, wherein: the ground station is connected with the core network equipment and is used for receiving the real-time information transmitted by the server corresponding to the user terminal transmitted by the core network equipment so as to transmit the real-time information to the low-orbit satellite system; the mobile communication-in-motion mobile carrier is connected with the low-orbit satellite system and is used for receiving real-time information transmitted by the ground station through the low-orbit satellite system; and the user terminal is connected with the portable base station and is used for acquiring real-time information of the automatic mobile carrier through the portable base station. The method and the device can solve the problem that the smoothness of the high-quality signal can not be continuously ensured in the fast moving environment, solve the time delay problem in the moving environment and effectively meet the demands of users.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a communications system, a method, an apparatus, a device, and a storage medium.
Background
With the development of communication technology, video live broadcast related applications based on real-time signal transmission are increasingly developed. Meanwhile, the live video range is also extended from live video at a fixed position to live video demands needing fast movement, such as live video of large sports games.
At present, in a fast moving environment, a situation that a live broadcast signal cannot continuously keep high quality exists, so that frequent mosaic and even live broadcast picture interruption are caused, and the user requirement cannot be met.
Disclosure of Invention
The present disclosure provides a communication system, method, apparatus, device, and storage medium to solve the problem that high quality signals cannot be continuously guaranteed to be clear in a fast moving environment.
In a first aspect, the present disclosure provides a communication system comprising:
the system comprises core network equipment, a ground station, a low-orbit satellite system, a mobile carrier in motion, a portable base station and a user terminal, wherein:
the ground station is connected with the core network equipment and is used for receiving the real-time information transmitted by the server corresponding to the user terminal transmitted by the core network equipment so as to transmit the real-time information to the low-orbit satellite system;
the mobile communication-in-motion mobile carrier is connected with the low-orbit satellite system and is used for receiving real-time information transmitted by the ground station through the low-orbit satellite system;
and the user terminal is connected with the portable base station and is used for acquiring real-time information of the automatic mobile carrier through the portable base station.
Optionally, the low-orbit satellite system comprises at least two low-orbit satellites, and the low-orbit satellite closest to the mobile carrier in motion in the at least two low-orbit satellites is used for receiving real-time information transmitted by the mobile carrier in motion; the low orbit satellite systems transmit real-time information to the mobile carrier in motion through a laser communication mode.
Optionally, the ground station includes an optical distribution frame ODF, a photoelectric conversion device, and a modulator, wherein: the ODF is connected with the core network equipment and is used for receiving the real-time information transmitted by the core network equipment; the photoelectric conversion equipment is used for carrying out photoelectric conversion on the real-time information received by the ODF and transmitting the real-time information after photoelectric conversion to the modulator; and the modulator is connected with the low-orbit satellite system and is used for modulating the real-time information received from the photoelectric conversion equipment and transmitting the modulated real-time information to the low-orbit satellite system.
Optionally, the communication-in-motion mobile carrier comprises a demodulator and an electro-optical conversion device, wherein: the demodulator is connected with the low-orbit satellite system and is used for demodulating the real-time information received from the low-orbit satellite system and transmitting the demodulated real-time information to the electro-optical conversion equipment; and the electro-optical conversion equipment is connected with the portable base station and is used for carrying out electro-optical conversion on the real-time information received from the demodulator and transmitting the real-time information after the electro-optical conversion to the portable base station.
Optionally, the speed of movement of the mobile carrier is less than a speed threshold, the speed threshold being used to characterize the maximum speed of uninterrupted transmission of the signal.
Optionally, the portable base station includes a baseband processing board, a feeder, and an RRU integrated antenna, where: the baseband processing board is used for converting the received real-time information into an electric signal for communication and transmitting the electric signal to the RRU integrated antenna through the feeder line; and the RRU integrated antenna is used for transmitting the received electric signals to the user terminals in the coverage area in an electromagnetic wave mode.
Optionally, the portable base station comprises a 5G portable micro base station employing 4t4r 8 antenna integration.
Optionally, the portable base station is deployed on a mobile-in-motion carrier.
In a second aspect, the present disclosure provides a communication method applied to a communication-in-motion mobile carrier as in any one of the first aspects of the present disclosure, the communication method comprising:
receiving real-time information from a low-orbit satellite system, wherein the real-time information is sent to core network equipment by a corresponding server of a user terminal, and the core network equipment sends the real-time information to a ground station so that the ground station sends the real-time information to the low-orbit satellite system;
and transmitting the real-time information to the portable base station to transmit the real-time information to the user terminal through the portable base station.
Optionally, the low orbit satellite system comprises at least two low orbit satellites, receiving real-time information from the low orbit satellite system, comprising: determining a target low-orbit satellite closest to the mobile carrier in motion in the low-orbit satellite system; real-time information transmitted by a target low orbit satellite is received.
In a third aspect, the present disclosure provides a communication device, where the information pushing device is applied to the mobile carrier in motion according to any one of the first aspect of the present disclosure, the information pushing device includes:
the receiving module is used for receiving the real-time information from the low-orbit satellite system, wherein the real-time information is sent to the core network equipment by the corresponding server of the user terminal, and the core network equipment sends the real-time information to the ground station so that the ground station sends the real-time information to the low-orbit satellite system;
and the sending module is used for sending the real-time information to the portable base station so as to transmit the real-time information to the user terminal through the portable base station.
Optionally, the receiving module is specifically configured to determine, when the low-orbit satellite system includes at least two low-orbit satellites, a target low-orbit satellite in the low-orbit satellite system closest to the mobile carrier; real-time information transmitted by a target low orbit satellite is received.
In a fourth aspect, the present disclosure also provides an electronic device, including:
at least one processor;
and a memory communicatively coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor to cause the electronic device to perform a communication method according to any embodiment of the third aspect of the present disclosure.
In a fifth aspect, the present disclosure also provides a computer-readable storage medium having stored therein computer-executable instructions which, when executed by a processor, are adapted to carry out a communication method as in any of the third aspects of the present disclosure.
The communication system, the method, the device, the equipment and the storage medium provided by the disclosure provide a communication means in a real-time mobile change process by arranging the communication-in-motion mobile carrier to be matched with the low-orbit satellite system, and solve the inconvenience brought by fixed satellite communication equipment. The user terminal is connected with the portable base station, and the mobility of the portable base station is utilized to realize the function of maintaining low-delay and high-bandwidth real-time data transmission for the user terminal in the moving process. Through the coordination of core network equipment, a ground station, a low-orbit satellite system, a communication-in-motion mobile carrier, a portable base station and a user terminal, the signal smoothness of high quality is continuously ensured under the fast moving environment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is an application scenario diagram of a communication method provided in an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of connection relation of a communication system according to another embodiment of the disclosure;
FIG. 4 is a flow chart of a communication method provided by yet another embodiment of the present disclosure;
FIG. 5 is a flow chart of a communication method provided by yet another embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a communication device according to another embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an electronic device according to another embodiment of the present disclosure.
Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The following describes the technical solutions of the present disclosure and how the technical solutions of the present disclosure solve the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present disclosure will be described below with reference to the accompanying drawings.
In the prior art, when a mobile network is well covered and base stations are arranged enough, when a user terminal connected with the mobile network moves at different positions, seamless coverage is usually realized through handover between the base stations. Under the common emergency communication scene, a core network is generally accessed at a relatively fixed position by means of vehicle-mounted base station equipment to provide emergency communication services, but the system has the defects that due to the fact that the position of a terminal client changes in real time and the condition of a basic network is insufficient, the traditional communication-in-motion emergency guarantee scheme can only realize narrow-band low-rate transmission technically, and due to overlarge time delay caused by the base station switching process, certain application scenes cannot meet the use requirements, such as real-time live broadcast interaction, high-speed internet service and the like.
In the aspect of live broadcast interaction in real time, most of technologies adopted in live broadcast processes of marathon and other similar events at the present stage are combined with a knapsack and a microwave relay, so that a good transmission effect can be achieved under the condition of good signal coverage, and once the signal coverage around a racing area is weak, frequent mosaics and even the situation of competition picture interruption can be caused, so that the visual experience of audiences is seriously influenced. Meanwhile, the time and effort are wasted in the process of erecting microwaves and matching microwave signals in the transmission process, the accuracy is low, the transmission is unstable, and the signal transmission interruption phenomenon is easy to occur. Therefore, the existing communication system cannot meet the problem of continuously keeping the high-quality signal smooth in the fast moving environment.
In order to solve the above-mentioned problems, the embodiments of the present disclosure provide a communication system, which can ensure that a handover of a base station does not occur in a fast moving environment and ensure high quality of communication through a low-orbit satellite by combining a low-orbit satellite system, a communication-in-motion mobile carrier and a portable base station.
The application scenario of the embodiments of the present disclosure is explained below:
fig. 1 is an application scenario diagram of a communication system provided in an embodiment of the present disclosure. As shown in fig. 1, in the process of communication, a user continuously communicates with the cloud server platform 120 through the communication system 110 in the process of carrying the user terminal 100 to transmit communication data in real time, so as to ensure effective real-time communication.
It should be noted that, in the scenario shown in fig. 1, the user terminal and the cloud server platform are only illustrated by way of example, but the disclosure is not limited thereto, that is, the number of user terminals and cloud server platforms may be arbitrary.
The communication method provided by the present disclosure is described in detail below by way of specific embodiments. It should be noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure; fig. 3 is a schematic diagram of connection relations of structures in the present embodiment. As shown in fig. 2, the communication system 200 includes:
core network device 210, ground station 220, low orbit satellite system 230, mobile carrier 240, portable base station 250 and user terminal 260, wherein:
the ground station 220 is connected with the core network device 210, and the ground station 220 is configured to receive real-time information sent by a server corresponding to the user terminal 260 transmitted by the core network device 210, so as to send the real-time information to the low-orbit satellite system 230;
a mobile communication carrier 240 connected to the low-orbit satellite system 230, wherein the mobile communication carrier is configured to receive real-time information transmitted by the ground station 220 through the low-orbit satellite system 230;
the user terminal 260 is connected to the portable base station 250, and the user terminal 260 is used for acquiring real-time information from the mobile carrier 240 through the portable base station 250.
Specifically, the fixed ground station 220 is connected to the core network device 210, and transmits real-time information to the low-orbit satellite system 230, so that the real-time information sent by the server targeted by the user terminal 260 can be stably transmitted to the low-orbit satellite system 230, and the ground station 220 and the core network device 210 are both fixed facilities, so that stable signal transmission between the server and the low-orbit satellite system 230 can be ensured.
The low-orbit satellite communication system 230 comprises a space section, a ground section and a user section, wherein the space section is a constellation system or other multi-satellite systems formed by a plurality of low-orbit satellites and is responsible for receiving and forwarding information, the ground section comprises various gateway stations and a control center, and the user section is formed by various user terminals, including a handheld terminal, a vehicle-mounted satellite station and the like.
By arranging the low-orbit satellite system 230 to replace the conventional synchronous orbit satellite or high-flux satellite which communicates with the mobile carrier 240 or the ground station 220 in the prior art, the high communication quality and low time delay of the low-orbit satellite system 230 can be utilized to effectively realize the cooperation with the mobile carrier 240, so as to ensure the stability and low time delay characteristic of signal transmission in rapid movement.
The mobile carrier 240 is a mobile satellite communication and tracking system, and the mobile satellite communication system mainly comprises an antenna unit, an attitude measurement system, a servo control system, a tracking receiver, a power amplifier unit, a power supply unit, a channel terminal device and the like. Tracking technologies adopted by tracking systems (i.e., tracking receivers) mainly include phased array and optical gyro tracking technologies. When the mobile satellite communication system is operated, the communication system structure is formed under the condition that the antenna is aligned with the target satellite. Because the mobile satellite communication system is mainly aimed at signal transmission of a moving carrier, when the carrier moves, the direction between an antenna and a satellite is deviated, and at the moment, the tracking receiver and the servo control system jointly regulate and control the rotation of the antenna so as to ensure that an antenna unit can be aligned with the satellite.
Further, the common antenna tracking modes include an accurate pointing tracking mode, a beacon tracking mode and a hybrid tracking mode. If the antenna accuracy is too much pursued, not only the gain effect is poor, but also the cost is increased. Therefore, when the system is designed, the tracking precision of the antenna needs to be reasonably designed in combination with the use requirement.
The existing communication-in-motion mobile carrier 240 can meet the scene application of mobile phone voice and data signal coverage. In the coverage area of the mobile carrier in motion, the mobile phone direct connection can be equal to the normal use standard, namely, the voice call is clear and undistorted, and the 3G/4G/5G voice and data service is smooth; WIFI, broadband data, video conference and daily office meet the actual use requirements.
Specifically, the communication-in-motion mobile carrier 240 includes three parts, namely a communication-in-motion system, a satellite link and a master station system. The communication system of satellite communication in motion is mainly used for collecting service information such as voice, data, image and the like through a local area network switch and a router, transmitting the service information to a satellite, and then transmitting the service information to satellite receiving equipment on the ground through forwarding equipment arranged on a low-orbit satellite. Thus, the mobile carrier 240 can realize the real-time tracking and positioning function of the mobile carrier itself, and can realize the transmission of voice, data, images and other information.
In some embodiments, when the mobile carrier 240 is a water vessel, the mobile carrier 240 includes three parts, an on-board system, a satellite link, and a shore station system. At this time, various application information systems of the mobile carrier 240 in motion are collected and transmitted to the satellite modem through the lan switch and the router, then transmitted to the satellite through the satellite communication system in the shipboard system, and finally transmitted to the satellite ground station through the satellite for processing and distributing the corresponding communication company. The base station adopted in the scheme can be a 3, 4 and 5G base station of a network operator, and WIFI utilizes a plurality of APs with built-in antennas to carry out wireless coverage, so that full ship coverage can be realized.
The mobile carrier 240 in motion is matched with the low-orbit satellite system 230 to replace a fixed satellite station matched with the low-orbit satellite system 230 in the prior art, so that the problem that the use condition is limited and communication service in rapid motion cannot be performed is effectively solved, and the application range of the low-orbit satellite system 230 is greatly improved.
The mobile carrier 240 can communicate with the portable base station 250 in real time to transmit real-time data transmitted from the low orbit satellite system 230, so that the problem of unstable communication quality caused by the need of communicating with different fixed satellite stations when only the portable base station 250 is used is avoided.
The portable base station 250 is a mobile base station, and by setting the portable base station 250, the user terminal 260 can be continuously connected with the same base station without switching the base station, so that the problems of delay and low data transmission quality caused by switching the base station are avoided.
The user terminal 260 is generally a device capable of carrying and moving, and the user terminal 260 can transmit real-time information such as video, audio, image data or input application data in real time, so that the user terminal 260 can be a camera device, a recording device or a portable detection device, or can be a device capable of carrying out data communication such as a smart phone, a notebook computer with wifi function, and the like. When the communication system has 5G communication capability, the user terminal 260 may also be a 5G handset, a 5G backpack, a 5G CPE device, etc. supporting 5G communication.
As shown in fig. 3, in some embodiments, the low-orbit satellite system 230 includes at least two low-orbit satellites 231, and the low-orbit satellite 231 closest to the mobile carrier 240 among the at least two low-orbit satellites 231 is used for receiving real-time information transmitted by the mobile carrier 240; the low-orbit satellite systems 230 communicate real-time information to the ground stations 220 via laser communication.
In order to ensure high communication quality and low latency, the low-orbit satellite system 230 covers a small range compared to a conventional satellite system, and therefore, the low-orbit satellite 231 directly communicating with the mobile carrier 240 in motion does not generally cover the cloud server that needs to communicate with the user terminal 260, and thus, relay transmission communication between the low-orbit satellites 231 through laser relay is needed to ensure that communication with the cloud server can be performed with low latency.
By means of laser communication, communication quality and communication efficiency between the low-orbit satellites 231 can be effectively guaranteed, and low time ductility of communication is further effectively guaranteed.
In some embodiments, the ground station 220 includes an ODF (collectively, in english, optical Distribution Frame, optical distribution frame) 221, a photoelectric conversion device 222, and a modulator 223, where: an ODF 221, connected to the core network device 210, and configured to receive real-time information transmitted by the core network device 210; the photoelectric conversion device 222 is configured to photoelectrically convert the real-time information received by the ODF 221, and transmit the photoelectrically converted real-time information to the modulator 223; the modulator 223 is connected to the low-orbit satellite system 230, and is used for modulating the real-time information received from the photoelectric conversion device 222 and transmitting the modulated real-time information to the low-orbit satellite system 230.
The ground station 220 is configured to access the real-time information received from the low-orbit satellite system 230 to the core network device 210, or may access the real-time information (e.g., internet information) sent by the core network device 210 to the low-orbit satellite system 230, the mobile carrier 240 in motion, and the portable base station 250 through an optical fiber to send to the user terminal 260, so as to ensure stable real-time communication with the user terminal 260.
Further, the core network device 210 may further include a core machine room, an access convergence machine room and a carrier network, where the core network device 210 connects the internet information with the access convergence machine room through the carrier network, and the access convergence machine room accesses the internet information to the ground station 220 through the carrier network.
In some embodiments, the ground station 220 may also include a satellite antenna, a radio frequency system, a baseband system, and a power supply system, where the power supply system meets the power requirement of the ground station 220, the baseband system performs code modulation on signals to send the signals to the radio frequency system, the frequency conversion function changes the signals to radio frequency signals, and the satellite antenna sends the signals to the low-orbit satellite system 230, thereby achieving the effect of forwarding the received real-time information.
In some embodiments, the ground station 220 may also set up an HPA (collectively, high Power Amplifier, high power amplifier, english) before transmitting the data to the low-orbit satellite system 230 to ensure signal quality when communicating with the low-orbit satellite system 230.
In some embodiments, the communication-in-motion mobile carrier 240 includes a demodulator 241 and an electro-optic conversion device 242, where: a demodulator 241 connected to the low-orbit satellite system 230 for demodulating real-time information received from the low-orbit satellite system 230 and transmitting the demodulated real-time information to the electro-optical conversion device 242; an electro-optical conversion device 242, which is connected to the portable base station 250, is used for electro-optically converting the real-time information received from the demodulator 241 and transmitting the electro-optically converted real-time information to the portable base station 250.
The mobile carrier 240 includes, but is not limited to, a car, a boat, a train, an airplane, an unmanned aerial vehicle, etc., and the mobile carrier 240 can cooperate with the rapid movement of the user terminal 260 in real time, so as to ensure uninterrupted transmission of signals.
The low-orbit satellite system 230 and the portable base station 250 are connected through the demodulator 241 and the electro-optical conversion device 242, so that the portable base station 250 and the low-orbit satellite system 230 can be ensured to be in communication connection through the same satellite communication and tracking system all the time, and the time delay caused by switching the satellite communication system (such as switching the ground station) is effectively reduced.
In some embodiments, the speed of movement of the mobile carrier 240 is less than a speed threshold, which is used to characterize the maximum speed of uninterrupted transmission of signals.
Specifically, when the speed of the mobile carrier 240 is greater than the speed threshold, there may be a problem of data loss during the transmission with the low-orbit satellite system 230, and when the speed is within the speed threshold, uninterrupted signal transmission can be effectively ensured. Therefore, the moving speed of the medium-speed moving carrier 240 needs to be limited.
Further, according to the different performances of the satellite tracking system of the mobile carrier 240, the corresponding speed threshold of the mobile carrier 240 is also different, and the stronger the performance, the higher the speed threshold.
Further, according to the requirement of the moving speed of the ue 260, different mobile carriers 240 and corresponding satellite tracking systems can be selected to ensure that stable signal transmission can be continuously provided for the ue.
In some embodiments, the portable base station 250 includes a baseband processing board 251, a feeder 252, and an rru (r.u. collectively, remote Radio Unit, remote radio unit) integrated antenna 253, wherein: a baseband processing board 251 for converting the received real-time information into an electrical signal for communication and transmitting the electrical signal to the RRU integrated antenna 253 through the feeder 252; the RRU integrated antenna 253 is configured to send the received electrical signal to the user terminal 260 in the coverage area by using an electromagnetic wave.
The portable base station 250 is bound to the mobile communication carrier 240 in the mobile communication, so as to ensure that the portable base station 250 can stably communicate with the mobile communication carrier 240 in the mobile communication, provide stable signal access for the user terminal 260, improve the stability of information transmission, and avoid the problem of unstable information transmission caused by the change of the relative positions of the portable base station 250 and the mobile communication carrier 240 in the mobile communication (such as the mobile base station 250 is driven by a third party to move).
In some embodiments, portable base station 250 comprises a portable miniature base station employing 4t4r 8 antenna integration.
Wherein the portable base station 250 is deployed on a mobile-in-motion carrier 240.
In particular, the portable base station 250 may employ a 5G micro base station, such as an easy Marco micro base station or a BOOK-RRU micro base station. By setting the portable base station 250 as a 5G miniature base station, it is possible to reduce the volume by 75% and the weight by 80% compared to a conventional 5G base station. By utilizing the characteristic of the large-scale MIMO technology with the small structure and 5G, the quantity of the transceiver is reduced, so that the volume of the 5G antenna is reduced, the antenna can be arranged on the mobile carrier 240, and the stability of information transmission between the antenna and the mobile carrier 240 is effectively ensured.
In some embodiments, when the communication system needs to be in an emergency communication scenario, the portable base station 250 is required to provide an emergency communication function for the plurality of user terminals 260, and the communication system transmits signals to the ground station 220, the low-orbit satellite system 230, the mobile carrier 240 in motion and the portable base station 250 in sequence mainly through the core network device 210, and communicates with the user terminals 260 through the portable base station 250.
In some embodiments, when the communication system needs to provide a live broadcast signal uploading service for a fast moving ue, the portable base station 250 mainly receives a real-time signal uploaded by the fast moving ue 260, and at this time, the communication system mainly transmits the live broadcast signal to the mobile carrier 240, the low-orbit satellite system 230, the ground station 220 and the core network device 210 in sequence through the portable base station 250, so that the core network device 210 uploads the live broadcast signal to a server of the internet.
According to the communication system provided by the embodiment of the disclosure, the communication means in the real-time moving and changing process is provided by arranging the communication-in-motion mobile carrier to be matched with the low-orbit satellite system, so that the inconvenience caused by fixed satellite communication is solved. The user terminal is connected with the portable base station, and the mobility of the portable base station is utilized to realize the low-delay high-bandwidth real-time data transmission function in the moving process. Through the coordination of core network equipment, a ground station, a low-orbit satellite system, a communication-in-motion mobile carrier, a portable base station and a user terminal, the signal smoothness of high quality is continuously ensured under the fast moving environment.
Fig. 4 is a flow chart of one communication method provided by the present disclosure. The communication method is applied to the mobile carrier in motion as in any one of the embodiments of fig. 2 and 3. As shown in fig. 4, the communication method provided in this embodiment includes the following steps:
step S401, receiving real-time information from a low-orbit satellite system.
The real-time information is sent to the core network equipment by the corresponding server of the user terminal, and the core network equipment sends the real-time information to the ground station, so that the ground station sends the real-time information to the low-orbit satellite system.
When the user terminal in the fast movement needs to perform continuous and stable data transmission to the cloud server, the ground station is required to firstly send the real-time signal in the server transmitted by the core network equipment to the low-orbit satellite system, then receives the message transmitted by the low-orbit satellite system through the communication-in-motion mobile carrier, and transmits the received real-time information to the user terminal through the portable base station, so that stable communication of the user terminal is realized. In some embodiments, for example, in a disaster situation, when an original ground station fails to work due to power outage or equipment damage, or in an unmanned area environment where the ground station is not arranged, a communication-in-motion mobile carrier can be arranged to receive a real-time signal forwarded by a low-orbit satellite system, so that normal work of network communication is maintained.
Because the mobile carrier in motion and the portable base station are arranged at the same position, the mobile carrier in motion with the portable base station is only required to be configured, the flexibility of a communication system is improved by utilizing the portable base station, and the stable and continuous communication of a user terminal is effectively ensured, so that the mobile carrier in motion is applied to rescue boats, helicopters, marching type 5G signal coverage by an unmanned aerial vehicle, large-scale sports events such as marathons, follow-up live broadcast of bicycle racing and other rescue and relief and large-scale activity scenes and communication requirements under other environments needing rapid movement.
Further, after receiving the real-time information sent by the low orbit satellite system, the mobile carrier in motion carries out demodulation processing on the received modulation signal, and then obtains the corresponding real-time information through electro-optical conversion processing, so as to send the corresponding real-time information to the user terminal through the portable base station.
Step S402, the real-time information is sent to the portable base station, so that the real-time information is transmitted to the user terminal through the portable base station.
The portable base station can simultaneously receive real-time signals sent by a plurality of user terminals in a coverage area, and then all the real-time signals are sent to the communication-in-motion mobile carrier for processing, so that the communication network can be ensured to effectively meet the requirements of a plurality of users moving rapidly, and the application range is improved.
Further, according to the number of user terminals and data traffic required to communicate simultaneously, one or more portable base stations can be set on the mobile carrier, and portable base stations with different performances can be selected to improve the communication capability of the communication system.
According to the communication method provided by the embodiment of the disclosure, the real-time information from the low-orbit satellite system is received, and then the real-time information is sent to the portable base station, so that the real-time information is transmitted to the user terminal through the portable base station. Through the cooperation of the low orbit satellite system, the mobile carrier in motion and the portable base station, the time delay problem in the communication process can be solved, the difference of the fixed satellite station on the communication of the user terminal in different environments can be solved, the fixed and weak coverage area can be solved through the portable base station, and the communication requirement of the mobile user terminal can not be met.
Fig. 5 is a flow chart of another communication method provided by the present disclosure. The communication method is applied to the mobile carrier in motion as in any one of the embodiments of fig. 2 and 3. As shown in fig. 5, the communication method provided in this embodiment includes the following steps:
step S501, determining a target low-orbit satellite closest to the mobile carrier in the low-orbit satellite system.
The mobile carrier comprises a satellite tracking system, and the satellite tracking system can determine a target low-orbit satellite which is communicated with the mobile carrier and can perform data communication with the target low-orbit satellite.
By determining the low-orbit satellites of the fixed and mobile carriers, the time delay problem and the transmission instability problem caused by switching the communication satellites can be reduced, and the high quality of communication can be ensured by using the low-orbit satellites.
Step S502, receiving real-time information transmitted by the target low orbit satellite.
The real-time information is sent to the core network equipment by the corresponding server of the user terminal, and the core network equipment sends the real-time information to the ground station, so that the ground station sends the real-time information to the low-orbit satellite system.
This step is the same as step S401 in the corresponding embodiment of fig. 4, and will not be described here again.
Step S503, transmitting the real-time information to the portable base station, so as to transmit the real-time information to the user terminal through the portable base station.
This step is the same as step S402 in the corresponding embodiment of fig. 4, and will not be described here again.
According to the communication method provided by the embodiment of the disclosure, the target low-orbit satellite closest to the mobile carrier in motion in the low-orbit satellite system is determined, then the real-time information transmitted by the target low-orbit satellite is received, and then the real-time information is sent to the portable base station, so that the real-time information is transmitted to the user terminal through the portable base station. By determining the low orbit satellite for communication between the fixed mobile carrier and the mobile carrier, the low orbit satellite for data communication, the mobile carrier and the portable base station do not need to be switched and are matched with the user terminal in a mobile state, so that the problem of continuously maintaining high-quality communication signals in a fast mobile environment is solved.
Fig. 6 is a schematic structural diagram of a communication device provided in the present disclosure. As shown in fig. 6, the communication apparatus is applied to a mobile carrier for communication in motion as in any embodiment of the present disclosure, and the communication apparatus 600 includes: a receiving module 610 and a transmitting module 620.
The receiving module 610 is configured to receive real-time information from the low-orbit satellite system, where the real-time information is sent to the core network device by the server corresponding to the user terminal, and the core network device sends the real-time information to the ground station, so that the ground station sends the real-time information to the low-orbit satellite system;
and a transmitting module 620 for transmitting the real-time information to the portable base station to transmit the real-time information to the user terminal through the portable base station.
Optionally, the receiving module 610 is specifically configured to determine, when the low-orbit satellite system includes at least two low-orbit satellites, a target low-orbit satellite in the low-orbit satellite system closest to the mobile carrier; real-time information transmitted by a target low orbit satellite is received.
In this embodiment, the communication device, through the combination of the modules, can realize the fast moving scene where the user terminal is located, provide stable, high-quality, low-delay real-time communication, satisfy the user demand, and improve the user experience.
Fig. 7 is a schematic structural diagram of an electronic device provided in the present disclosure, as shown in fig. 7, the electronic device 700 includes: a memory 710 and a processor 720.
Wherein the memory 710 stores computer programs executable by the at least one processor 720. The computer program is executed by the at least one processor 720 to cause the electronic device to implement the communication method as provided in any of the embodiments above.
Wherein the memory 710 and the processor 720 may be connected by a bus 730.
The relevant descriptions and effects corresponding to the relevant description and effects corresponding to the method embodiments may be understood, and are not repeated herein.
An embodiment of the present disclosure provides a computer-readable storage medium having stored thereon a computer program that is executed by a processor to implement the communication method of any of the embodiments as corresponds to fig. 4 to 5.
The computer readable storage medium may be, among other things, ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
One embodiment of the present disclosure provides a computer program product containing computer-executable instructions for implementing the communication method of any of the embodiments as corresponds to fig. 4-5 when executed by a processor.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules is merely a logical function division, and there may be additional divisions of actual implementation, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (11)
1. A communication system, comprising: the system comprises core network equipment, a ground station, a low-orbit satellite system, a mobile carrier in motion, a portable base station and a user terminal, wherein:
the ground station is connected with the core network equipment and is used for receiving real-time information transmitted by a corresponding server of the user terminal transmitted by the core network equipment so as to transmit the real-time information to the low-orbit satellite system;
the mobile communication carrier is connected with the low-orbit satellite system and is used for receiving real-time information transmitted by the ground station through the low-orbit satellite system;
the user terminal is connected with the portable base station and is used for acquiring real-time information from the communication-in-motion mobile carrier through the portable base station;
the mobile communication carrier comprises a mobile communication system, a satellite link and a master station system, wherein the mobile communication satellite communication system collects voice, data and image service information through a local area network switch and a router and transmits the voice, data and image service information to a satellite, and then the voice, data and image service information is transmitted to satellite receiving equipment on the ground through forwarding equipment arranged on a low-orbit satellite;
the portable base station comprises a baseband processing board, a feeder line and a remote radio unit RRU integrated antenna, wherein: the baseband processing board is used for converting received real-time information into an electric signal for communication and transmitting the electric signal to the RRU integrated antenna through the feeder line; the RRU integrated antenna is used for sending the received electric signals to the user terminal in the coverage area in an electromagnetic wave mode; the portable base station comprises an easy Marco type micro base station or a BOOK-RRU type micro base station.
2. The communication system of claim 1, wherein the low-orbit satellite system comprises at least two low-orbit satellites, a low-orbit satellite closest to the mobile-in-motion carrier of the at least two low-orbit satellites being configured to receive real-time information transmitted by the mobile-in-motion carrier; and the low-orbit satellite systems transmit real-time information to the mobile carrier in motion in a laser communication mode.
3. The communication system according to claim 1 or 2, wherein the ground station comprises an optical distribution frame ODF, an optical-to-electrical conversion device, and a modulator, wherein:
the ODF is connected with the core network equipment and is used for receiving real-time information transmitted by the core network equipment;
the photoelectric conversion device is used for performing photoelectric conversion on the real-time information received by the ODF and transmitting the real-time information after photoelectric conversion to the modulator;
the modulator is connected with the low-orbit satellite system and is used for modulating the real-time information received from the photoelectric conversion equipment and transmitting the modulated real-time information to the low-orbit satellite system.
4. A communication system according to claim 1 or 2, wherein the communication-in-motion mobile carrier comprises an electro-optical conversion device and a demodulator, wherein:
the demodulator is connected with the low-orbit satellite system and is used for demodulating the real-time information received from the low-orbit satellite system and transmitting the demodulated real-time information to the electro-optical conversion equipment;
the electro-optical conversion device is connected with the portable base station and is used for performing electro-optical conversion on the real-time information received from the demodulator and transmitting the real-time information after the electro-optical conversion to the portable base station.
5. A communication system according to claim 1 or 2, characterized in that the speed of movement of the mobile carrier is less than a speed threshold, which is used to characterize the maximum speed of uninterrupted transmission of signals.
6. A communication system according to claim 1 or 2, characterized in that the portable base station is deployed on the mobile-in-motion carrier.
7. A communication method applied to the communication-in-motion mobile carrier according to any one of claims 1 to 6, the communication method comprising:
receiving real-time information from a low-orbit satellite system, wherein the real-time information is sent to core network equipment by a corresponding server of a user terminal, and the core network equipment sends the real-time information to a ground station so that the ground station sends the real-time information to the low-orbit satellite system;
and sending the real-time information to the portable base station so as to transmit the real-time information to a user terminal through the portable base station.
8. The method of claim 7, wherein the low-orbit satellite system comprises at least two low-orbit satellites, and wherein the receiving real-time information from the low-orbit satellite system comprises:
determining a target low-orbit satellite in the low-orbit satellite system closest to the mobile-in-motion carrier;
and receiving real-time information transmitted by the target low-orbit satellite.
9. A communication device, characterized in that it is applied to a communication-in-motion mobile carrier according to any one of claims 1 to 6, the communication device comprising:
the receiving module is used for receiving the real-time information from the low-orbit satellite system, wherein the real-time information is sent to the core network equipment by the corresponding server of the user terminal, and the core network equipment sends the real-time information to the ground station so that the ground station sends the real-time information to the low-orbit satellite system;
and the sending module is used for sending the real-time information to the portable base station so as to transmit the real-time information to the user terminal through the portable base station.
10. An electronic device, comprising:
at least one processor;
and a memory communicatively coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor to cause the electronic device to perform the communication method of claim 7 or 8.
11. A computer readable storage medium having stored therein computer executable instructions which when executed by a processor are adapted to implement the communication method of claim 7 or 8.
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| CN115776328A (en) * | 2022-11-15 | 2023-03-10 | 华安中云股份有限公司 | Data transmission method, device, computer equipment and medium based on satellite signal |
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