CN112019259A - Cross-beam communication method and terminal based on heaven-through one-number satellite - Google Patents
Cross-beam communication method and terminal based on heaven-through one-number satellite Download PDFInfo
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- CN112019259A CN112019259A CN202010954276.9A CN202010954276A CN112019259A CN 112019259 A CN112019259 A CN 112019259A CN 202010954276 A CN202010954276 A CN 202010954276A CN 112019259 A CN112019259 A CN 112019259A
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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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18517—Transmission equipment in earth stations
-
- 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
- H04B7/18519—Operations control, administration or maintenance
Abstract
The invention discloses a beam-crossing communication method and a beam-crossing communication terminal based on an Tiantong first-number satellite, and belongs to the technical field of communication. The terminal comprises a main controller, a serial port or a network port, a first antenna module, a second antenna module, a combiner and an antenna. The terminal transmits service data through a serial port or a network port, and realizes uninterrupted transmission of the service data in a beam crossing process through the double-antenna module. The invention fully considers the beam coverage and service capability characteristics of the satellite, provides data communication service through the skynet one packet data service, and performs data transmission hot switching by detecting the signal quality of the satellite beam through the dual skynet module in the terminal, thereby realizing uninterrupted communication when the terminal crosses the beam and meeting the requirement of uninterrupted data communication.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a beam-crossing communication method and a beam-crossing communication terminal based on an all-satellite-one satellite.
Background
The satellite No. skatone belongs to a GEO (geostationary orbit) satellite, located 3 kilometers above the equator and stationary relative to the earth. The satellite covers the ground in a spot beam mode, can provide communication capacity in the areas which cannot be covered by ground mobile communication systems such as the field, the ocean and the like, and can provide voice, short message and packet data services for users.
The spot beam action of the satellite one heaven is similar to that of a base station cell of a ground mobile communication system, and the working frequency of adjacent spot beams is different. When the terminal successfully registers from the located spot beam to the network, if the terminal moves from one spot beam to another spot beam in a standby state, the terminal needs to actively initiate a beam switching process to stay in a new spot beam, otherwise, the terminal loses signals and drops the network after exceeding the coverage range of the original spot beam. When the terminal is in voice service or data service, the signal quality of the adjacent beam cannot be monitored as in a standby state, and if the terminal position exceeds the coverage of the resident spot beam, service interruption or network drop can be caused.
Because the coverage diameter of the spot beam of the satellite of the skynet one on the ground is hundreds of kilometers, the requirement that single service is not dropped can be basically met in a single beam for a satellite terminal with a relatively fixed position or low moving speed and short service duration. However, for a terminal of an aerial vehicle such as a solar unmanned aerial vehicle, a floating balloon and the like, since the movement speed is high, a single task may span multiple satellite spot beams, and a long-time and continuous data transmission is required during flight control or state monitoring, so that a data interruption problem during beam crossing needs to be solved.
Disclosure of Invention
Based on the problems in the background art, the invention provides a beam crossing communication method and a terminal based on an skynet one satellite.
In order to achieve the purpose, the invention adopts the technical scheme that:
a cross-beam communication method based on an Tiantong first-number satellite comprises the following steps:
(1) using a first and a second skyward communication modules to perform network access registration in the selected satellite beam, and entering a standby state after success;
(2) activating a packet data service on a first antenna module to carry out data communication, and detecting the signal quality of a current resident beam and adjacent beams around the current resident beam in real time by a second antenna module in a standby state;
(3) when detecting that a certain adjacent beam meets a switching condition, using the adjacent beam as a target beam, residing a second skywave module in the target beam through a beam switching process, and activating a packet data service on the second skywave module, thereby switching data communication to the second skywave module; then, the first antenna-through module is deactivated, and the first antenna-through module is also resided in the target beam through the beam switching process, so that the first antenna-through module is kept in a standby state in the beam;
(4) and the first antenna-pass module detects the target beam and the adjacent beams thereof in real time in a standby state to prepare for next switching.
Furthermore, the sky-through module searches satellite beam broadcast signals in a frequency scanning mode, selects a broadcast beam with the optimal signal intensity and signal-to-noise ratio from the plurality of beam broadcast signals as a selected satellite beam, and performs network access registration.
Further, the second skynting module acquires the adjacent beam frequency point information from the broadcast message of the current resident beam in the standby state, and circularly measures the signal intensity and the signal to noise ratio of the broadcast channel of the current resident beam and the adjacent beam.
Further, when the next antenna-pass module detects that the signal quality of the adjacent beam is better than that of the currently resident beam and the signal strength and the signal-to-noise ratio exceed the threshold, it indicates that the adjacent beam meets the beam-crossing switching condition, and the adjacent beam serving as the target beam is resident through the beam switching process.
Further, when the beam switching process is started, firstly, the second skywave module is resided in the target beam and activates the packet data service, at this time, the two skywave modules respectively activate the packet data service on the current resided beam and the target beam, and after the data transmission is thermally switched to the adjacent beam for transmission, the skywave module under the current resided beam is deactivated and the skywave module is switched and resided in the target beam to prepare for the next switching.
A cross-beam communication terminal based on an skynt one satellite, comprising:
the satellite signal receiving and transmitting system comprises a radio frequency branching and branching device, an antenna, a first antenna communication module and a second antenna communication module, wherein the radio frequency branching and branching device is used for realizing the receiving and transmitting of satellite signals and providing two antenna communication channels;
the main controller is used for receiving and transmitting the service data transmitted through the serial port or the network port, and controlling the skywalking module to receive and transmit the data and switch the wave beams;
and the serial port or the network port is used for external communication and external service data transmission.
Furthermore, the sky-passing module comprises a baseband chip, a radio frequency chip and a power management chip, runs protocol stack software and physical layer software which accord with the sky-passing one-number-passing standard, transmits control messages and service data with the main controller through a serial port, and provides AT commands for the main controller to control.
Furthermore, the radio frequency branching and combining device is used for branching and combining the receiving and transmitting frequency channels of the two antenna communication modules and connecting the two antenna communication modules to the antenna, and the antenna is an active antenna, so that the requirement that the two antenna communication modules transmit 384kbps packet data services simultaneously is met.
Further, the main controller performs control and data transmission by sending an AT command to a serial port of the skynet module, and performs data transmission with the outside through the serial port or a network port; the main controller is responsible for controlling activation and deactivation of the packet data service of the skywave module, and controlling beam switching according to the signal strength and the signal-to-noise ratio of the current resident beam and the adjacent beams reported by the skywave module.
Compared with the prior art, the invention has the advantages that:
1. the method is rigorous, concise and compact and is convenient to realize.
2. The invention is comprehensively considered by combining the practical application scene of the special terminal, and can effectively solve the problem of communication data interruption of cross-beam switching in the Tiantong one-number satellite mobile communication system.
Drawings
To more clearly describe this patent, one or more drawings are provided below to assist in explaining the background, technical principles and/or certain embodiments of this patent.
Fig. 1 is a schematic view of the coverage of a spot beam of a satellite heaven-through-one in an embodiment of the present invention.
Fig. 2 is a block diagram of a satellite terminal device according to an embodiment of the present invention.
Fig. 3 is a network access flow chart of the skywalking module in the embodiment of the present invention.
Fig. 4 is a flow chart of spot beam switching in an embodiment of the present invention.
FIG. 5 is a flow chart of data hot handoff in an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the technical solutions of the present patent by those skilled in the art, and to make the technical objects, technical solutions and advantages of the present patent more apparent and fully support the scope of the claims, the technical solutions of the present patent are described in detail in the following embodiments.
As shown in fig. 1, coverage of a communication area by the skynt-one satellite mobile communication system is realized by a way that a satellite transmits a spot beam to the ground, which functions similar to the concept of a base station and a cell of the terrestrial mobile communication system, and when a beam is crossed, a problem of data interruption occurs. To this end, the following embodiments provide a cross-beam communication terminal based on an skynt one satellite.
As shown in fig. 2, the terminal includes:
the satellite signal receiving and transmitting system comprises a radio frequency branching and branching device, an antenna, a first antenna communication module and a second antenna communication module, wherein the radio frequency branching and branching device is used for realizing the receiving and transmitting of satellite signals and providing two antenna communication channels;
the main controller is used for receiving and transmitting the service data transmitted through the serial port or the network port, and controlling the skywalking module to receive and transmit the data and switch the wave beams;
and the serial port or the network port is used for external communication and external service data transmission.
Based on the terminal, the method for realizing the cross-beam communication based on the satellite of the skynet one number comprises the following steps:
(1) the main control module firstly controls two skynet baseband modules to start a frequency sweeping function, synchronizes to the broadcast channel frequency of a current spot beam and reads broadcast messages, acquires public access channel configuration information, current spot beam center position information and adjacent beam frequency point information in system broadcast messages, and then initiates random access to complete a network access registration process;
(2) the main control module selects a heaven-through baseband module to activate the packet data service, and after the activation is successful, the module receives and transmits data and forwards the data to a peripheral interface of the terminal;
(3) the main control module is configured with another skynet baseband module to detect the signal intensity and the signal-to-noise ratio of the current beam and the adjacent beams around in real time in a standby state and report the signal intensity and the signal-to-noise ratio to the main control module;
(4) when the signal intensity and the signal-to-noise ratio of the adjacent wave beam reported by the skynet baseband module in the standby state are continuously superior to those of the currently resident wave beam, judging whether the wave beam switching condition is met or not by combining the change between the current position information reported by the module and the wave beam center position information of the resident wave beam, and if the wave beam switching condition is met, controlling the module to switch the wave beam and reside in a new spot wave beam;
(5) when the skynet baseband module in the standby state is successfully switched, the main control module initiates a data service on the skynet baseband module, and at the moment, the two skynet baseband modules are respectively in an activated state under two beams.
(6) The main control module switches the satellite data receiving and transmitting from the sky-pass module residing under the primary beam to another sky-pass module, and then the cross-beam hot switch of data transmission is completed;
(7) the main control module deactivates the sky-pass satellite module residing on the original beam to return to the standby state, then controls the sky-pass satellite module to perform a beam switching process, resides on a new beam, and starts a beam monitoring function for the next beam switching.
Specifically, after the satellite terminal is turned on, as shown in fig. 3, the main control module first controls the two skyward baseband modules to search for a spot beam broadcast channel, then reads broadcast information, obtains configuration information of a public access channel of the system, center position information of a current spot beam and frequency point information of an adjacent spot beam, and then initiates random access to complete a network access registration process. In addition, the main control module simultaneously starts the positioning function of the skynet baseband module, and obtains the current terminal position information in real time.
During the movement of the satellite terminal, if the edge of the spot beam is reached, the satellite terminal should try to switch to a new spot beam. As shown in fig. 4, in the standby state of the terminal, the main control module configures the skynting baseband module to measure and report the signal strength and the signal-to-noise ratio of the currently-resident spot beam and the neighboring beams around the currently-resident spot beam in real time, and the skynting baseband module also reports the current terminal position information in real time through the positioning function. When the main control module detects that the quality of an adjacent beam signal measured by the skynet baseband module is superior to that of a currently resident beam, and by comparing position information when the terminal resides or spot beams are switched for the first time with the current position information, if the terminal displacement is found to exceed a preset threshold value, the beam switching condition is judged to be met. At this time, the main control module configures the skynting baseband module to switch to the adjacent beam.
As shown in fig. 5, after the terminal powers on the resident point, one skyway baseband module is selected to initiate a data service and perform data transceiving communication through the module, and another skyway baseband module is controlled to measure the current spot beam and the adjacent beam information in real time in a standby state and report the position information to the main control module. When the main control module detects that the switching condition is met, the module in the standby state executes the beam switching process to reside in an adjacent beam with better signal quality, and then the grouped data service is initiated on a new beam. At this time, the terminal has a data transmission channel in both beams, then the main control module switches the data transmission to the packet data service of the new beam, and deactivates the skyway module residing on the original beam to return to the standby idle state, then executes the beam switching process to reside in the new beam, and configures the beam switching process to enter a real-time measurement state to prepare for the next beam switching, thus completing the data hot switching process.
In a word, the invention fully considers the beam coverage and service capability characteristics of the satellite, provides data communication service through the skynet one packet data service, and performs data transmission hot switching by detecting the signal quality of the satellite beam through a dual skynet module in the terminal, thereby realizing uninterrupted communication when the terminal crosses the beam and meeting the requirement of uninterrupted data communication.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. A cross-beam communication method based on an Tiantong first-number satellite is characterized by comprising the following steps:
(1) using a first and a second skyward communication modules to perform network access registration in the selected satellite beam, and entering a standby state after success;
(2) activating a packet data service on a first antenna module to carry out data communication, and detecting the signal quality of a current resident beam and adjacent beams around the current resident beam in real time by a second antenna module in a standby state;
(3) when detecting that a certain adjacent beam meets a switching condition, using the adjacent beam as a target beam, residing a second skywave module in the target beam through a beam switching process, and activating a packet data service on the second skywave module, thereby switching data communication to the second skywave module; then, the first antenna-through module is deactivated, and the first antenna-through module is also resided in the target beam through the beam switching process, so that the first antenna-through module is kept in a standby state in the beam;
(4) and the first antenna-pass module detects the target beam and the adjacent beams thereof in real time in a standby state to prepare for next switching.
2. The method as claimed in claim 1, wherein the skywalking module searches for satellite beam broadcast signals by means of frequency scanning, and selects a broadcast beam with optimal signal strength and signal-to-noise ratio from the plurality of beam broadcast signals as the selected satellite beam, and performs network entry registration.
3. The method of claim 1, wherein the second skywalking module obtains the adjacent beam frequency point information from the broadcast message of the currently resident beam in the standby state, and cyclically measures the signal strength and the signal-to-noise ratio of the broadcast channel of the currently resident beam and the adjacent beam.
4. The method of claim 1, wherein when the second skynting module detects that the signal quality of the adjacent beam is better than that of the currently parked beam and the signal strength and the signal-to-noise ratio exceed the threshold, it indicates that the adjacent beam satisfies the cross-beam handover condition, and the adjacent beam serving as the target beam is parked through the beam handover procedure.
5. The method of claim 1, further characterized in that when starting the beam handover procedure, first the second skywave module resides in the target beam and activates the packet data service, at this time the two skywave modules activate the packet data service on the currently residing beam and the target beam, respectively, and after the data transmission is hot-switched to the neighboring beam for transmission, the skywave module under the currently residing beam is deactivated and the module is handed over to reside in the target beam, to prepare for the next handover.
6. A cross-beam communication terminal based on an skynt one satellite, comprising:
the satellite signal receiving and transmitting system comprises a radio frequency branching and branching device, an antenna, a first antenna communication module and a second antenna communication module, wherein the radio frequency branching and branching device is used for realizing the receiving and transmitting of satellite signals and providing two antenna communication channels;
the main controller is used for receiving and transmitting the service data transmitted through the serial port or the network port, and controlling the skywalking module to receive and transmit the data and switch the wave beams;
and the serial port or the network port is used for external communication and external service data transmission.
7. The inter-beam communication terminal based on the skynet one-number satellite according to claim 6, wherein the skynet module comprises a baseband chip, a radio frequency chip and a power management chip, runs protocol stack software and physical layer software conforming to the skynet one-number communication standard, performs control message and service data transmission with the main controller through a serial port, and provides an AT command for the main controller to control.
8. The cross-beam communication terminal based on the skynet one-number satellite according to claim 6, wherein the radio frequency splitter is used for splitting and connecting the receiving and transmitting frequency channels of the two skynet modules to an antenna, and the antenna is an active antenna, so that the requirement that the two skynet modules concurrently transmit 384kbps packet data service is met.
9. The sky-pass one-number satellite-based cross-beam communication terminal according to claim 6, wherein the main controller performs control and data transmission by sending AT commands to a serial port of the sky-pass module, and performs data transmission with the outside through the serial port or a network port; the main controller is responsible for controlling activation and deactivation of the packet data service of the skywave module, and controlling beam switching according to the signal strength and the signal-to-noise ratio of the current resident beam and the adjacent beams reported by the skywave module.
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| CN202010954276.9A CN112019259A (en) | 2020-09-11 | 2020-09-11 | Cross-beam communication method and terminal based on heaven-through one-number satellite |
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| CN202010954276.9A CN112019259A (en) | 2020-09-11 | 2020-09-11 | Cross-beam communication method and terminal based on heaven-through one-number satellite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507313A (en) * | 2021-07-30 | 2021-10-15 | 中国电子科技集团公司第五十四研究所 | Resource application method and device based on Tiantong one-number satellite mobile communication system |
| CN114598361A (en) * | 2022-03-08 | 2022-06-07 | 中国人民解放军63921部队 | Satellite-borne skynet terminal and beam switching method thereof |
| WO2022155963A1 (en) * | 2021-01-25 | 2022-07-28 | 北京小米移动软件有限公司 | Beam measurement method and beam measurement device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735738A (en) * | 2015-04-21 | 2015-06-24 | 重庆邮电大学 | Switching method in GMR-1 satellite mobile communication system |
| CN105052199A (en) * | 2012-08-28 | 2015-11-11 | 交互数字专利控股公司 | Method for handover of communication link using primary beam |
| CN105591685A (en) * | 2015-12-28 | 2016-05-18 | 休斯网络技术有限公司 | VSAT broadband satellite communication cross beam switching system and method |
| CN205811036U (en) * | 2016-07-04 | 2016-12-14 | 南京中网卫星通信股份有限公司 | A kind of integration communication in moving antenna-feedback system |
| CN109257786A (en) * | 2018-11-30 | 2019-01-22 | 中国电子科技集团公司第五十四研究所 | A kind of GEO satellite mobile communication system multi-beam switching method that terminal is autonomous |
| CN110011721A (en) * | 2019-03-29 | 2019-07-12 | 睿高(广州)通信技术有限公司 | Power amplifying device and power amplification system in satellite communication system |
| US20200028573A1 (en) * | 2015-04-10 | 2020-01-23 | Viasat, Inc. | Ground network for end-to-end beamforming |
| CN110832792A (en) * | 2017-03-02 | 2020-02-21 | 维尔塞特公司 | Dynamic satellite beam allocation |
-
2020
- 2020-09-11 CN CN202010954276.9A patent/CN112019259A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052199A (en) * | 2012-08-28 | 2015-11-11 | 交互数字专利控股公司 | Method for handover of communication link using primary beam |
| US20200028573A1 (en) * | 2015-04-10 | 2020-01-23 | Viasat, Inc. | Ground network for end-to-end beamforming |
| CN104735738A (en) * | 2015-04-21 | 2015-06-24 | 重庆邮电大学 | Switching method in GMR-1 satellite mobile communication system |
| CN105591685A (en) * | 2015-12-28 | 2016-05-18 | 休斯网络技术有限公司 | VSAT broadband satellite communication cross beam switching system and method |
| CN205811036U (en) * | 2016-07-04 | 2016-12-14 | 南京中网卫星通信股份有限公司 | A kind of integration communication in moving antenna-feedback system |
| CN110832792A (en) * | 2017-03-02 | 2020-02-21 | 维尔塞特公司 | Dynamic satellite beam allocation |
| CN109257786A (en) * | 2018-11-30 | 2019-01-22 | 中国电子科技集团公司第五十四研究所 | A kind of GEO satellite mobile communication system multi-beam switching method that terminal is autonomous |
| CN110011721A (en) * | 2019-03-29 | 2019-07-12 | 睿高(广州)通信技术有限公司 | Power amplifying device and power amplification system in satellite communication system |
Non-Patent Citations (1)
| Title |
|---|
| 陈翰功: "微蜂窝通信中越区切换技术研究", 《中国优秀硕士论文全文数据库-信息科技辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022155963A1 (en) * | 2021-01-25 | 2022-07-28 | 北京小米移动软件有限公司 | Beam measurement method and beam measurement device |
| CN115136656A (en) * | 2021-01-25 | 2022-09-30 | 北京小米移动软件有限公司 | Beam measuring method and beam measuring device |
| CN115136656B (en) * | 2021-01-25 | 2023-10-03 | 北京小米移动软件有限公司 | Beam measuring method and beam measuring device |
| CN113507313A (en) * | 2021-07-30 | 2021-10-15 | 中国电子科技集团公司第五十四研究所 | Resource application method and device based on Tiantong one-number satellite mobile communication system |
| CN113507313B (en) * | 2021-07-30 | 2022-08-02 | 中国电子科技集团公司第五十四研究所 | Resource application method and device based on Tiantong one-number satellite mobile communication system |
| CN114598361A (en) * | 2022-03-08 | 2022-06-07 | 中国人民解放军63921部队 | Satellite-borne skynet terminal and beam switching method thereof |
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