CN116915308B - Multimode communication method and system for mobile users - Google Patents
Multimode communication method and system for mobile users Download PDFInfo
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- CN116915308B CN116915308B CN202310461464.1A CN202310461464A CN116915308B CN 116915308 B CN116915308 B CN 116915308B CN 202310461464 A CN202310461464 A CN 202310461464A CN 116915308 B CN116915308 B CN 116915308B
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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
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18558—Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Computer Networks & Wireless Communication (AREA)
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- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a multimode communication method and a multimode communication system for a mobile user, which relate to the technical field of communication.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a multimode mobile user communication method and system.
Background
The transmission capacity, environmental parameters and topological structures of various satellites such as Tiantong and Beidou have great differences, and various requirements of different regions and different types of users are often difficult to meet. When important information or emergency occurs, the mobile user needs to report the user center in time. However, the current global special communication mainly uses a low-orbit special communication satellite, and emergency situations can be returned only when the satellite passes, and communication can not be carried out in a period when the satellite does not pass, so that timeliness of mobile user communication information transmission is greatly affected.
Disclosure of Invention
The invention aims to provide a multimode communication method and system for a mobile user, so as to ensure timeliness of communication information transmission of the mobile user.
In a first aspect, the present invention provides a mobile user multimode communication method, comprising: the mobile user handheld terminal sends a downlink short message to a first ground management and control center based on a first communication mode under the condition that the downlink short message edited by the mobile user is received; wherein the first communication mode includes one of: a Tiantong mode, a Beidou mode; after a first preset time period, if the mobile user handheld terminal does not receive the first uplink short message sent by the first ground management and control center, switching to a second communication mode to send the downlink short message to the second ground management and control center; wherein the second communication mode includes one of: a heaven communication mode, a Beidou mode, and the first communication mode and the second communication mode are different; the first uplink short message is a message fed back by a user center of the mobile user under the condition that the user center receives the downlink short message forwarded by the first ground control center; after a second preset time period, if the mobile user handheld terminal does not receive a second uplink short message sent by the second ground control center, switching to a synchronous orbit satellite forwarding mode to send the downlink short message to a third ground control center; the synchronous orbit satellite forwarding mode indicates that the downlink short message is transmitted through a relay antenna, the relay antenna is used for communicating with a relay satellite, and the relay satellite supports a communication link for receiving the downlink short message sent by all users in the coverage area of the relay satellite in a full time; the second uplink short message is a message fed back by the user center under the condition that the user center receives the downlink short message forwarded by the second ground control center.
In an alternative embodiment, the method further comprises: after receiving the downlink short message, the third ground management and control center forwards the downlink short message to a user center of the mobile user; the user center analyzes the downlink short message, and encapsulates the response information received by the user center into a third uplink short message, so as to send the third uplink short message to the third ground management and control center; and the third ground control center calls an uplink tracking beam to point to the mobile user so as to send the third uplink short message to the mobile user handheld terminal through the uplink tracking beam.
In an alternative embodiment, the method further comprises: the third ground control center acquires current service area information of the space-through satellite and current service area information of the Beidou satellite which are closest to the mobile user after receiving the downlink short message; and packaging the current service area information of the space-time satellite and the current service area information of the Beidou satellite into a fourth uplink short message, and sending the fourth uplink short message to the mobile user handheld terminal through the uplink tracking beam.
In an alternative embodiment, the method further comprises: and after receiving the fourth uplink short message, the mobile user handheld terminal displays the current service area information of the space-time satellite and the position of the current service area information of the Beidou satellite in a map, and displays route information that the mobile user moves from the current position to the current service area of the space-time satellite and/or the current service area of the Beidou satellite.
In an alternative embodiment, the method further comprises: if the distances between the current position of the mobile user and the current service area of the space satellite and the current service area of the Beidou satellite are larger than a preset threshold, the mobile user handheld terminal sends resource applications of uplink tracking beams and downlink tracking beams to the third ground control center, so that the third ground control center can call the uplink tracking beams and the downlink tracking beams to point to the mobile user, and further service data bidirectional transmission guarantee is provided for the mobile user.
In an alternative embodiment, the method further comprises: and when the third ground control center receives the downlink short message sent by the mobile user handheld terminal again, the third ground control center calls an uplink tracking beam and a downlink tracking beam to point to the last communication position of the mobile user.
In a second aspect, the present invention provides a mobile user multimode communication system comprising: the mobile user handheld terminal sends a downlink short message to a first ground management and control center based on a first communication mode under the condition that the downlink short message edited by the mobile user is received; wherein the first communication mode includes one of: a Tiantong mode, a Beidou mode; after a first preset time period, if the mobile user handheld terminal does not receive the first uplink short message sent by the first ground management and control center, switching to a second communication mode to send the downlink short message to the second ground management and control center; wherein the second communication mode includes one of: a heaven communication mode, a Beidou mode, and the first communication mode and the second communication mode are different; the first uplink short message is a message fed back by a user center of the mobile user under the condition that the user center receives the downlink short message forwarded by the first ground control center; after a second preset time period, if the mobile user handheld terminal does not receive a second uplink short message sent by the second ground control center, switching to a synchronous orbit satellite forwarding mode to send the downlink short message to a third ground control center; the synchronous orbit satellite forwarding mode indicates that the downlink short message is transmitted through a relay antenna, the relay antenna is used for communicating with a relay satellite, and the relay satellite supports a communication link for receiving the downlink short message sent by all users in the coverage area of the relay satellite in a full time; the second uplink short message is a message fed back by the user center under the condition that the user center receives the downlink short message forwarded by the second ground control center.
In an alternative embodiment, the method further comprises: after receiving the downlink short message, the third ground management and control center forwards the downlink short message to a user center of the mobile user; the user center analyzes the downlink short message, and encapsulates the response information received by the user center into a third uplink short message, so as to send the third uplink short message to the third ground management and control center; and the third ground control center calls an uplink tracking beam to point to the mobile user so as to send the third uplink short message to the mobile user handheld terminal through the uplink tracking beam.
In a third aspect, the present invention provides an electronic device comprising a memory, a processor, the memory having stored thereon a computer program executable on the processor, the processor implementing the steps of the mobile user multimode communication method of any one of the preceding embodiments when the computer program is executed.
In a fourth aspect, the present invention provides a computer readable storage medium storing computer instructions which, when executed by a processor, implement a mobile user multimode communication method according to any one of the preceding embodiments.
In the multimode communication method for the mobile user, the mobile user hand-held terminal has communication modes of movement, navigation and relay, and can be switched to the synchronous orbit satellite forwarding mode under the condition that the mobile user hand-held terminal cannot build a link with the antenna and the Beidou antenna so as to transmit downlink short messages through the relay antenna, wherein the relay antenna is used for communicating with the relay satellite, and the relay satellite supports communication links for receiving the downlink short messages sent by all user targets in the coverage area of the relay satellite at all times, thereby meeting the emergency communication requirements outside the coverage area of the mobile communication satellite and providing an emergency communication means for the mobile user, and further guaranteeing the timeliness of the communication information transmission of the mobile user.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a multimode communication method for a mobile user according to an embodiment of the present invention;
fig. 2 is a system block diagram of a mobile user handheld terminal according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a short message service guarantee mode according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Example 1
Fig. 1 is a flowchart of a multimode communication method for a mobile user according to an embodiment of the present invention, as shown in fig. 1, where the method specifically includes the following steps:
step S102, the mobile user handheld terminal sends the downlink short message to the first ground management and control center based on the first communication mode under the condition that the downlink short message edited by the mobile user is received.
The mobile user handheld terminal is a multi-point communication access (S-band multiple access) terminal compatible with short message service of multiple types of satellites, and has the capability of carrying out service communication under a space satellite, a Beidou satellite and a relay satellite. The first communication mode includes one of: a Tiantong mode and a Beidou mode. The space-time communication mode means that data communication is carried out between a space-time communication antenna on a mobile user handheld terminal and a space-time communication satellite; the Beidou mode indicates that data communication is carried out between the Beidou antenna on the mobile user handheld terminal and a Beidou satellite.
When the mobile user has the requirement of returning the downlink service data, the mobile user hand-held terminal can be operated to edit the downlink short message, and in the embodiment of the invention, the communication mode of the synchronous orbit satellite forwarding mode is used as an emergency communication means, so that when the mobile user hand-held terminal has the downlink short message to be sent, the mobile user hand-held terminal is preferably selected to transmit the downlink short message in a Tiantong mode or a Beidou mode. The embodiment of the invention does not specifically limit the selection of the first communication mode, and the user can set the first communication mode according to actual requirements.
The first ground control center refers to a ground control center for interfacing with a communication satellite corresponding to the first communication mode, that is, if the first communication mode selects the space communication mode, the corresponding first ground control center is the ground control center for interfacing with the space communication satellite; if the first communication mode selects the Beidou mode, the first ground control center is the ground control center in butt joint with the Beidou satellite.
Step S104, after a first preset time period, if the mobile user handheld terminal does not receive the first uplink short message sent by the first ground control center, switching to a second communication mode to send the downlink short message to the second ground control center.
Wherein the second communication mode includes one of: a Tiantong mode, a Beidou mode and a first communication mode and a second communication mode which are different; that is, if the first communication mode selects the antenna communication mode, the second communication mode is the Beidou mode; if the first communication mode selects the Beidou mode, the second communication mode is a Tiantong mode; the first uplink short message is a message fed back by the user center of the mobile user under the condition that the user center receives the downlink short message forwarded by the first ground control center.
Taking the first communication mode as an example, selecting the heaven-earth mode, if the first ground control center successfully receives the downlink short message and forwards the downlink short message to the user center of the mobile user, the user center feeds back the response information for confirming the reception, encapsulates the response information into a first uplink short message and sends the first uplink short message to the first ground control center, so that the first ground control center sends the first uplink short message to the handheld terminal of the mobile user through the heaven-earth satellite.
Although the above processing flow requires a certain time, if the mobile user handheld terminal fails to receive the first uplink short message sent by the first ground management and control center after the first preset time period, it is indicated that the mobile user handheld terminal is not within the coverage area of the space satellite, that is, cannot establish a data transmission link with the space satellite, and at this time, the mobile user handheld terminal will switch to the second communication mode.
If the first communication mode in step S102 is the space-time communication mode, the mobile user handheld terminal in the step will attempt to build a link with the beidou satellite through its beidou antenna so as to send a downlink short message to the second ground management and control center which is in docking with the beidou satellite.
Step S106, after the second preset time period, if the mobile user handheld terminal does not receive the second uplink short message sent by the second ground control center, switching to a synchronous orbit satellite forwarding mode to send the downlink short message to the third ground control center.
The synchronous orbit satellite forwarding mode is used for transmitting downlink short messages through a relay antenna, the relay antenna is used for communicating with a relay satellite, and the relay satellite supports a communication link for receiving the downlink short messages sent by all user targets in the coverage area of the relay satellite at all times; the second uplink short message is a message fed back by the user center under the condition that the user center receives the downlink short message forwarded by the second ground control center.
And if the second ground control center successfully receives the downlink short message and forwards the downlink short message to the user center of the mobile user, the user center feeds back the response information for confirming the reception, encapsulates the response information into a second uplink short message and sends the second uplink short message to the second ground control center, so that the second ground control center sends the second uplink short message to the handheld terminal of the mobile user through the Beidou satellite. The data content of the first uplink short message is the same as that of the second uplink short message, and the message format is only required to be adjusted according to the actual data transmission protocol.
If the mobile user handheld terminal fails to receive the second uplink short message sent by the second ground management and control center after the second preset time period, the mobile user handheld terminal is not in the coverage area of the Beidou satellite and cannot establish a data transmission link with the Beidou satellite, and at the moment, the mobile user handheld terminal is switched to a synchronous orbit satellite forwarding mode, namely a relay sending mode. The static orbit satellite panoramic beam system can construct an emergency communication link which forms a normalized coverage for an overseas area, and directly provides communication support of safe concealment and real-time response for special communication users outside the area. In the relay transmission mode, the emergency communication requirement outside the coverage area of the mobile communication satellite can be met, the application range of the multi-point communication access panoramic beam system for supporting the space-based information is further expanded, and the emergency communication means for protecting the bottom is provided for special communication users outside the coverage area of the mobile communication satellite. That is, after the mobile user hand-held terminal is switched to the geosynchronous orbit satellite forwarding mode, the downlink short message can be successfully sent to the third ground management and control center through the relay satellite.
The uplink of the stationary orbit satellite multipoint communication access panoramic beam system adopts an on-satellite radio frequency beam synthesis technology to form a plurality of uplink tracking beams; the downlink adopts a terrestrial Digital Beam Forming (DBF) technology, and a plurality of downlink tracking beams and a plurality of panoramic static beams are formed simultaneously. And through the short message service supported by the panoramic static beam and the uplink tracking beam, the communication between the mobile user handheld terminal and the third ground control center and the communication between the mobile user handheld terminal and the user center can be realized under the unified scheduling of the third ground control center.
Fig. 2 is a system block diagram of a mobile user handheld terminal according to an embodiment of the present invention, and as shown in fig. 2, the terminal may be mainly divided into three parts, an antenna, a host, and a peripheral. Wherein, the antenna mainly includes: the antenna has the functions of receiving uplink signals from the satellite and outputting the uplink signals to the host, and transmitting downlink radio frequency signals from the host to the satellite. It should be noted that if the communication band supported by the terminal is wide, the relay antenna and the antenna may share the same antenna body.
The host is mainly used for receiving and transmitting three satellite signals of the relay antenna, the antenna and the Beidou antenna, and has the functions of multi-mode self-adaption and manual switching. Generally, when the mobile user handheld terminal works in a synchronous orbit satellite forwarding mode, the uplink and downlink short message service receiving and transmitting processing is mainly completed; when working in the Tiantong mode, the voice communication and the low-speed data communication are mainly completed; when working in the Beidou mode, navigation positioning and short message communication are mainly completed.
The peripheral equipment of the mobile user hand-held terminal mainly comprises a display unit, keys and an audio unit, wherein the display unit is used for displaying short messages, data, positioning information and the like received by a host; the keys are used for supporting the mobile user to edit the short message manually; the audio unit is used for realizing the input and playing of voice.
In the multimode communication method for the mobile user provided by the embodiment of the invention, the mobile user handheld terminal has communication modes of movement, navigation and relay, and can be switched to the synchronous orbit satellite forwarding mode under the condition that the mobile user handheld terminal cannot build a link with the antenna and the Beidou antenna so as to transmit downlink short messages through the relay antenna, wherein the relay antenna is used for communicating with the relay satellite, and the relay satellite supports communication links for receiving the downlink short messages sent by all user targets in the coverage area of the relay satellite at all times, thereby meeting the emergency communication requirements outside the coverage area of the mobile communication satellite and providing an emergency communication means for the mobile user, and further guaranteeing the timeliness of the communication information transmission of the mobile user.
In an alternative embodiment, the method of the present invention further comprises the following:
after receiving the downlink short message, the third ground control center forwards the downlink short message to a user center of the mobile user; the user center analyzes the downlink short message, and encapsulates the response information received by the user center into a third uplink short message, so as to send the third uplink short message to a third ground management and control center; and the third ground control center calls the uplink tracking beam to point to the mobile user so as to send a third uplink short message to the mobile user handheld terminal through the uplink tracking beam.
Specifically, as shown in fig. 3, after the third ground control center successfully receives the downlink short message, the address information of the receiver of the downlink short message can be obtained by extracting the characteristics of the downlink short message, and then the downlink short message can be sent to the user center of the mobile user according to the address information. The user center obtains the service data returned by the mobile user through analyzing the message, then encapsulates the response information into a third uplink short message in a short message format, and then sends the third uplink short message to the third ground management and control center.
The third ground control center can perform resource control on the relay satellite, when a request for sending an uplink short message exists, the third ground control center distributes an uplink tracking beam for a receiver (i.e. a mobile user) of the uplink short message according to the current uplink beam resource use condition, and after finishing the directional adjustment of the uplink tracking beam (i.e. controlling the uplink tracking beam to point to the mobile user), the third uplink short message can be sent to the mobile user handheld terminal through the beam.
In an alternative embodiment, the method of the present invention further comprises the following:
after receiving the downlink short message, the third ground control center acquires current service area information of the space satellite and current service area information of the Beidou satellite, which are closest to the mobile user;
And packaging the current service area information of the space-borne satellite and the current service area information of the Beidou satellite into a fourth uplink short message, and transmitting the fourth uplink short message to the mobile user handheld terminal through an uplink tracking beam.
Specifically, when the mobile user hand-held terminal uses the synchronous orbit satellite forwarding mode to send the downlink short message, it is indicated that the terminal cannot communicate with the space-time antenna and the Beidou antenna, so that in order to enable the mobile user to more timely transmit the downlink short message back to the user center, after receiving the downlink short message, the third ground control center can also select to query the space-time satellite current service area information and the Beidou satellite current service area information around the position where the mobile user hand-held terminal is located for the mobile user, then package the information closest to the mobile user hand-held terminal into a fourth uplink short message, and send the fourth uplink short message to the mobile user hand-held terminal through an uplink tracking beam of the third uplink short message.
After receiving the fourth uplink short message, the mobile user handheld terminal displays the current service area information of the space-time satellite and the position of the current service area information of the Beidou satellite in the map, and displays route information of the mobile user moving from the current position to the current service area of the space-time satellite and/or the current service area of the Beidou satellite.
After the mobile user hand-held terminal receives the fourth uplink short message, the current service area information of the Tiantong satellite and the current service area information of the Beidou satellite which are nearest to the mobile user can be obtained through a preset message analysis flow, and then the positions and routes reaching the two positions are displayed on the terminal so as to provide navigation guidance for the mobile user.
In an alternative embodiment, the method of the present invention further comprises the following:
if the distance between the current position of the mobile user and the current service area of the space satellite and the current service area of the Beidou satellite are both larger than a preset threshold value, the mobile user handheld terminal sends resource applications of uplink tracking beams and downlink tracking beams to a third ground control center, so that the third ground control center calls the uplink tracking beams and the downlink tracking beams to point to the mobile user, and further service data bidirectional transmission guarantee is provided for the mobile user.
Specifically, if the mobile user handheld terminal compares with the preset threshold value, it is determined that the current position of the mobile user is too far away from the current service area of the space satellite and the current service area of the Beidou satellite, that is, the mobile user cannot reach the area through short-time/short-distance movement, at this time, the mobile user handheld terminal applies for resources for sending uplink tracking beams and downlink tracking beams to a third ground control center, applies for establishing uplink and downlink communication links with the user center in a specified resource window, and establishes a bidirectional communication link with the user center, thereby providing service data bidirectional transmission guarantee for the mobile user. Alternatively, the mobile user handset may also apply for uplink tracking beam resources or downlink tracking beam resources separately.
The specific application flow is as follows: firstly, a mobile user handheld terminal sends communication information in a short message format through a multipoint communication access panoramic beam system, a third ground control center analyzes after receiving the short message, judges the short message as the communication information, knows the application condition of the handheld terminal to multipoint communication access uplink/downlink beam resources, judges the application rationality of the communication resources, finally generates a multipoint communication access uplink/downlink beam resource using plan of the handheld terminal, and actively initiates a building chain to send the communication window to the user center.
And then, the third ground management and control center encapsulates the uplink/downlink beam resource utilization plan of the multipoint communication access according to a short message format, autonomously completes resource allocation, beam pointing adjustment and ground station parameter configuration, then transmits the uplink/downlink beam resource plan of the multipoint communication access to the handheld terminal, and feeds back the transmission condition of the uplink/downlink beam resource plan of the multipoint communication access to the user center. And then the user center, the third ground control center and the handheld terminal jointly execute the uplink/downlink beam resource use plan of the multipoint communication access, and a message communication link between the user center and the handheld terminal is established in a corresponding time window.
In an alternative embodiment, the method of the present invention further comprises the following:
when the third ground control center receives the downlink short message sent by the mobile user handheld terminal again, the third ground control center calls the uplink tracking beam and the downlink tracking beam to point to the last communication position of the mobile user.
In the embodiment of the present invention, for a relay satellite, a mobile user is different from a user target with a fast moving speed, and can be regarded as a quasi-stationary target, i.e., similar to a fixed location point, and then after receiving a downlink short message sent by a mobile user handheld terminal once, when the mobile user handheld terminal needs to communicate with the mobile user handheld terminal again, the third ground management center does not need to be the same as the flow when the uplink/downlink tracking beam is called for the first time, i.e., firstly, the serial number of a panoramic static beam for receiving the downlink short message is acquired, then the coverage area of the panoramic static beam is determined according to the serial number of the beam and a preset correspondence database (the correspondence database between the serial number of the beam and the coverage area), and then the direction of the uplink/downlink tracking beam to be called (the center of the coverage area) can be determined.
Because each mobile user handheld terminal has a unique identity identification code, the third ground management and control center can determine whether to receive the downlink short message sent by the mobile user handheld terminal for the first time. When the third ground control center receives the downlink short message sent by a mobile user handheld terminal for the second time, the third ground control center defaults that the downlink short message cannot generate larger displacement, so that the uplink tracking beam and the downlink tracking beam are directly called to point to the last communication position of the mobile user handheld terminal. If the uplink short message is not successfully sent to the handheld terminal through the current beam call, the third ground control center will relocate the position of the mobile user and then adjust the beam direction.
Example two
The embodiment of the invention also provides a mobile user multimode communication system, and the mobile user multimode communication system provided by the embodiment of the invention is specifically introduced below. Specific:
the mobile user handheld terminal sends a downlink short message to a first ground management and control center based on a first communication mode under the condition that the mobile user handheld terminal receives the downlink short message edited by the mobile user; wherein the first communication mode includes one of: a Tiantong mode and a Beidou mode.
After a first preset time period, if the mobile user handheld terminal does not receive the first uplink short message sent by the first ground control center, switching to a second communication mode to send a downlink short message to the second ground control center; wherein the second communication mode includes one of: a Tiantong mode, a Beidou mode and a first communication mode and a second communication mode which are different; the first uplink short message is a message fed back by the user center of the mobile user under the condition that the user center receives the downlink short message forwarded by the first ground control center.
After a second preset time period, if the mobile user handheld terminal does not receive a second uplink short message sent by a second ground control center, switching to a synchronous orbit satellite forwarding mode to send a downlink short message to a third ground control center; the synchronous orbit satellite forwarding mode is used for transmitting downlink short messages through a relay antenna, the relay antenna is used for communicating with a relay satellite, and the relay satellite supports a communication link for receiving the downlink short messages sent by all user targets in the coverage area of the relay satellite at all times; the second uplink short message is a message fed back by the user center under the condition that the user center receives the downlink short message forwarded by the second ground control center.
In the mobile user multimode communication system provided by the embodiment of the invention, the mobile user handheld terminal has communication modes of movement, navigation and relay, and can be switched to the synchronous orbit satellite forwarding mode under the condition that the mobile user handheld terminal cannot build a link with the antenna and the Beidou antenna so as to transmit downlink short messages through the relay antenna, wherein the relay antenna is used for communicating with the relay satellite, and the relay satellite supports communication links for receiving the downlink short messages sent by all user targets in the coverage area of the relay satellite at all times, thereby meeting the emergency communication requirements outside the coverage area of the mobile communication satellite and providing an emergency communication means for the mobile user, and further guaranteeing the timeliness of the communication information transmission of the mobile user.
Optionally, the method further comprises:
and the third ground management and control center forwards the downlink short message to the user center of the mobile user after receiving the downlink short message.
The user center analyzes the downlink short message, and encapsulates the response information received by the user center into a third uplink short message, so as to send the third uplink short message to a third ground management and control center.
And the third ground control center calls the uplink tracking beam to point to the mobile user so as to send a third uplink short message to the mobile user handheld terminal through the uplink tracking beam.
Optionally, the method further comprises:
and the third ground management and control center acquires the current service area information of the space satellite and the current service area information of the Beidou satellite, which are closest to the mobile user, after receiving the downlink short message.
And packaging the current service area information of the space-borne satellite and the current service area information of the Beidou satellite into a fourth uplink short message, and transmitting the fourth uplink short message to the mobile user handheld terminal through an uplink tracking beam.
Optionally, the method further comprises:
after receiving the fourth uplink short message, the mobile user handheld terminal displays the current service area information of the space-time satellite and the position of the current service area information of the Beidou satellite in the map, and displays route information of the mobile user moving from the current position to the current service area of the space-time satellite and/or the current service area of the Beidou satellite.
Optionally, the method further comprises:
if the distance between the current position of the mobile user and the current service area of the space satellite and the current service area of the Beidou satellite are both larger than a preset threshold value, the mobile user handheld terminal sends resource applications of uplink tracking beams and downlink tracking beams to a third ground control center, so that the third ground control center calls the uplink tracking beams and the downlink tracking beams to point to the mobile user, and service data return guarantee is provided for the mobile user.
Optionally, the method further comprises:
when the third ground control center receives the downlink short message sent by the mobile user handheld terminal again, the third ground control center calls the uplink tracking beam and the downlink tracking beam to point to the last communication position of the mobile user.
Example III
Referring to fig. 4, an embodiment of the present invention provides an electronic device, including: a processor 60, a memory 61, a bus 62 and a communication interface 63, the processor 60, the communication interface 63 and the memory 61 being connected by the bus 62; the processor 60 is arranged to execute executable modules, such as computer programs, stored in the memory 61.
The memory 61 may include a high-speed random access memory (RAM, random Access Memory), and may further include a non-volatile memory (non-volatile memory), such as at least one magnetic disk memory. The communication connection between the system network element and at least one other network element is achieved via at least one communication interface 63 (which may be wired or wireless), and may use the internet, a wide area network, a local network, a metropolitan area network, etc.
Bus 62 may be an ISA bus, a PCI bus, an EISA bus, or the like. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one bi-directional arrow is shown in FIG. 4, but not only one bus or type of bus.
The memory 61 is configured to store a program, and the processor 60 executes the program after receiving an execution instruction, and the method executed by the apparatus for defining a process disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 60 or implemented by the processor 60.
The processor 60 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 60. The processor 60 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but may also be a digital signal processor (Digital Signal Processing, DSP for short), application specific integrated circuit (Application Specific Integrated Circuit, ASIC for short), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA for short), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 61 and the processor 60 reads the information in the memory 61 and in combination with its hardware performs the steps of the method described above.
The embodiment of the invention provides a computer program product of a multimode communication method and system for a mobile user, which comprises a computer readable storage medium storing a non-volatile program code executable by a processor, wherein the program code comprises instructions for executing the method described in the foregoing method embodiment, and specific implementation can be seen in the method embodiment and will not be repeated herein.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. A method of multimode communication for a mobile user, comprising:
The mobile user handheld terminal sends a downlink short message to a first ground management and control center based on a first communication mode under the condition that the downlink short message edited by the mobile user is received; wherein the first communication mode includes one of: a Tiantong mode, a Beidou mode;
after a first preset time period, if the mobile user handheld terminal does not receive the first uplink short message sent by the first ground management and control center, switching to a second communication mode to send the downlink short message to the second ground management and control center; wherein the second communication mode includes one of: a heaven communication mode, a Beidou mode, and the first communication mode and the second communication mode are different; the first uplink short message is a message fed back by a user center of the mobile user under the condition that the user center receives the downlink short message forwarded by the first ground control center;
after a second preset time period, if the mobile user handheld terminal does not receive a second uplink short message sent by the second ground control center, switching to a synchronous orbit satellite forwarding mode to send the downlink short message to a third ground control center; the synchronous orbit satellite forwarding mode indicates that the downlink short message is transmitted through a relay antenna, the relay antenna is used for communicating with a relay satellite, and the relay satellite supports a communication link for receiving the downlink short message sent by all users in the coverage area of the relay satellite in a full time; the second uplink short message is a message fed back by the user center under the condition that the user center receives the downlink short message forwarded by the second ground control center;
Further comprises:
after receiving the downlink short message, the third ground management and control center forwards the downlink short message to a user center of the mobile user;
the user center analyzes the downlink short message, and encapsulates the response information received by the user center into a third uplink short message, so as to send the third uplink short message to the third ground management and control center;
the third ground control center calls an uplink tracking beam to point to the mobile user so as to send the third uplink short message to the mobile user handheld terminal through the uplink tracking beam;
further comprises:
the third ground control center acquires current service area information of the space-through satellite and current service area information of the Beidou satellite which are closest to the mobile user after receiving the downlink short message;
and packaging the current service area information of the space-time satellite and the current service area information of the Beidou satellite into a fourth uplink short message, and sending the fourth uplink short message to the mobile user handheld terminal through the uplink tracking beam.
2. The mobile subscriber multimode communication method of claim 1, further comprising:
And after receiving the fourth uplink short message, the mobile user handheld terminal displays the current service area information of the space-time satellite and the position of the current service area information of the Beidou satellite in a map, and displays route information that the mobile user moves from the current position to the current service area of the space-time satellite and/or the current service area of the Beidou satellite.
3. The mobile subscriber multimode communication method of claim 2, further comprising:
if the distances between the current position of the mobile user and the current service area of the space satellite and the current service area of the Beidou satellite are larger than a preset threshold, the mobile user handheld terminal sends resource applications of uplink tracking beams and downlink tracking beams to the third ground control center, so that the third ground control center can call the uplink tracking beams and the downlink tracking beams to point to the mobile user, and further service data bidirectional transmission guarantee is provided for the mobile user.
4. The mobile subscriber multimode communication method of claim 1, further comprising:
and when the third ground control center receives the downlink short message sent by the mobile user handheld terminal again, the third ground control center calls an uplink tracking beam and a downlink tracking beam to point to the last communication position of the mobile user.
5. A mobile subscriber multimode communication system comprising:
the mobile user handheld terminal sends a downlink short message to a first ground management and control center based on a first communication mode under the condition that the downlink short message edited by the mobile user is received; wherein the first communication mode includes one of: a Tiantong mode, a Beidou mode;
after a first preset time period, if the mobile user handheld terminal does not receive the first uplink short message sent by the first ground management and control center, switching to a second communication mode to send the downlink short message to the second ground management and control center; wherein the second communication mode includes one of: a heaven communication mode, a Beidou mode, and the first communication mode and the second communication mode are different; the first uplink short message is a message fed back by a user center of the mobile user under the condition that the user center receives the downlink short message forwarded by the first ground control center;
after a second preset time period, if the mobile user handheld terminal does not receive a second uplink short message sent by the second ground control center, switching to a synchronous orbit satellite forwarding mode to send the downlink short message to a third ground control center; the synchronous orbit satellite forwarding mode indicates that the downlink short message is transmitted through a relay antenna, the relay antenna is used for communicating with a relay satellite, and the relay satellite supports a communication link for receiving the downlink short message sent by all users in the coverage area of the relay satellite in a full time; the second uplink short message is a message fed back by the user center under the condition that the user center receives the downlink short message forwarded by the second ground control center;
Further comprises:
after receiving the downlink short message, the third ground management and control center forwards the downlink short message to a user center of the mobile user;
the user center analyzes the downlink short message, and encapsulates the response information received by the user center into a third uplink short message, so as to send the third uplink short message to the third ground management and control center;
the third ground control center calls an uplink tracking beam to point to the mobile user so as to send the third uplink short message to the mobile user handheld terminal through the uplink tracking beam;
further comprises:
the third ground control center acquires current service area information of the space-through satellite and current service area information of the Beidou satellite which are closest to the mobile user after receiving the downlink short message;
and packaging the current service area information of the space-time satellite and the current service area information of the Beidou satellite into a fourth uplink short message, and sending the fourth uplink short message to the mobile user handheld terminal through the uplink tracking beam.
6. An electronic device comprising a memory, a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor, when executing the computer program, implements the steps of the mobile user multimode communication method of any one of the preceding claims 1 to 4.
7. A computer readable storage medium storing computer instructions which when executed by a processor implement the mobile user multimode communication method of any one of claims 1 to 4.
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| CN103476094A (en) * | 2012-06-06 | 2013-12-25 | 中兴通讯股份有限公司 | Access network method, terminal and interworking gateway |
| CN111711973A (en) * | 2020-06-04 | 2020-09-25 | 上海金卓网络科技有限公司 | Method, device, electronic equipment and storage medium for switching communication network |
| CN112367112A (en) * | 2020-10-29 | 2021-02-12 | 青岛海洋科学与技术国家实验室发展中心 | Deep sea subsurface buoy real-time data transmission system based on multimode satellite communication system |
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| US20040072561A1 (en) * | 2002-10-15 | 2004-04-15 | Laprade James Nicholas | Direct-to-home-and-mobile satellite internet service |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103476094A (en) * | 2012-06-06 | 2013-12-25 | 中兴通讯股份有限公司 | Access network method, terminal and interworking gateway |
| CN111711973A (en) * | 2020-06-04 | 2020-09-25 | 上海金卓网络科技有限公司 | Method, device, electronic equipment and storage medium for switching communication network |
| CN112367112A (en) * | 2020-10-29 | 2021-02-12 | 青岛海洋科学与技术国家实验室发展中心 | Deep sea subsurface buoy real-time data transmission system based on multimode satellite communication system |
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