CN102892093B - Mobile communication network expansion communication system and method of big dipper RDSS (radio data system) system - Google Patents
Mobile communication network expansion communication system and method of big dipper RDSS (radio data system) system Download PDFInfo
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- CN102892093B CN102892093B CN201210439913.4A CN201210439913A CN102892093B CN 102892093 B CN102892093 B CN 102892093B CN 201210439913 A CN201210439913 A CN 201210439913A CN 102892093 B CN102892093 B CN 102892093B
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Abstract
The invention provides a mobile communication network expansion communication system and method based on big dipper RDSS (radio data system) system, wherein one or a plurality of big dipper base stations nearly the same as the base station on the current mobile communication network are created, the base station is connected with the mobile communication network through a wire link and is connected with a mobile communication network based on a portable mobile communication base station or a wireless communication network formed by wifi route equipment beyond the signal coverage range of the mobile communication network through a big dipper satellite RDSS wireless short message link, and the two networks are used for realizing the short message communication of mobile equipment (cellphone) beyond the coverage range and the mobile equipment (cellphone) within the coverage range of the mobile communication network so as to expand the coverage range of the mobile communication network.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of mobile communications network based on Big Dipper RDSS system and expand communication system and method.
Background technology
Big Dipper RDSS system: the satellite system with short message communication function of China's independent intellectual property right;
Mobile communication system: based on the communication system of existing digital mobile cellular telecommunication network, as the communication system of the communication system of China Mobile, the communication system of CHINAUNICOM and China Telecom.
Current, China has built up the digital mobile cellular telecommunication net covering the whole nation and provides multiple business, mainly comprises: voice service, short message service, data service.Mobile short message service (SMS) is suitable for the transfer of data etc. that amount of communication data is little and realize in the Embedded System Product application of long-distance measure and control.
Mobile short message service is divided into point-to-point short message and short message cell broadcaste service 2 kinds.Point-to-point short message service can make the user of GSM network can receive or send numeral or the Word message of finite length (being no more than 140 bytes), short message is the longest is 140 English characters or 63 Chinese characters, if exceed this specific length, then to send several times.
Mobile short message service utilizes signaling channel to transmit, and it need not dial and connects, but directly the information that will send out is added that destination address is sent to SMS service center, send to final target terminal (mobile phone) again by short message service center.If transmit unsuccessfully, callee does not answer definite message, and GSM network can retain transmitted breath, when find called can called logical time, information can be retransmitted, to guarantee that callee accurately receives.
But because mobile short-message needs could normally to receive and dispatch in the signal cover of mobile communication base station, so just need to build many mobile communication base stations, linked together by communication line between these mobile communication base stations and just constitute mobile communications network, mobile short-message can be received and dispatched in all mobile communication base stations in this mobile communications network, but owing to building the cost of base station and the reason of environment, mobile communication base station cannot reach seamless coverage, such as on ocean or on Gobi desert, just mobile short-message cannot be received and dispatched, thus cannot with other user's proper communications in mobile communications network, very inconvenient.
Big Dipper RDSS system possesses short message transmitting function, utilize Big Dipper short message channel that text message is sent to big-dipper satellite with the form of short message in the region that Big Dipper RDSS terminal equipment can be able to cover at big-dipper satellite and by big-dipper satellite, this short message is sent to big-dipper satellite master station again, big-dipper satellite master station also can send short message by contrary mode to Big Dipper RDSS terminal equipment, thus realizes communication.Owing to being take big-dipper satellite as information node so its coverage is very wide, but could must realize communicating with the cooperation of big-dipper satellite master station, so it has significant limitation again by Big Dipper RDSS terminal equipment due to it.
Summary of the invention
A kind of mobile communications network based on Big Dipper RDSS system is the object of the present invention is to provide to expand communication system and method, in (such as ocean, the region that mobile communications network signal cannot cover, high mountain, Gobi desert), Big Dipper RDSS short message channel and WIFI routing device or portable mobile communication base station is utilized to build SMS channel between the mobile communication terminal (mobile phone) in mobile communications network signal coverage areas, expand the coverage of mobile communications network, bring the Consumer's Experience that mobile communication terminal (mobile phone) user is good, thus the foregoing problems existed in solution prior art.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of mobile communications network based on Big Dipper RDSS system expands communication system, comprise: Big Dipper RDSS system, mobile communications network, Big Dipper base station and multiple extension system that communicates, described multiple communication extension system is connected with Big Dipper RDSS system by Big Dipper satellite signal, described Big Dipper base station is connected with Big Dipper RDSS system by Big Dipper satellite signal and/or special line, and is connected with mobile communication system by cable network.
Preferably, described Big Dipper RDSS system comprises big-dipper satellite and big-dipper satellite master station; Described mobile communications network comprises mobile communication system and multiple first mobile phone terminal; Described communication extension system comprises multiple second mobile phone terminal, Big Dipper mobile base station and/or Big Dipper wifi base station.
Preferably, described big-dipper satellite is connected with described Big Dipper mobile base station and/or described Big Dipper wifi base station by Big Dipper satellite signal; Described Big Dipper base station is connected with described Big Dipper RDSS system by Big Dipper satellite signal and/or special line, and described Big Dipper base station is connected with described mobile communication system by cable network.
Preferably, described Big Dipper mobile base station comprises portable mobile communication base station, the first Big Dipper RDSS terminal equipment and the first message conversion equipment, and described portable mobile communication base station, described first message conversion equipment and described first Big Dipper RDSS terminal equipment are linked in sequence.
Preferably, described Big Dipper wifi base station comprises wifi routing device, the second Big Dipper RDSS terminal equipment and the second message conversion equipment, and described wifi routing device, described second message conversion equipment and described second Big Dipper RDSS terminal equipment are linked in sequence.
Apply the method that the described mobile communications network based on Big Dipper RDSS system expands communication system, comprise the following steps:
S1, by the region that the mobile communication signal that described communication extension system is arranged at described mobile communication system does not cover;
S2, the second mobile short-message that described second mobile phone terminal sends sends to target first mobile phone terminal through described Big Dipper mobile base station and/or described Big Dipper wifi base station, described Big Dipper RDSS system, described Big Dipper base station and described mobile communication system;
S3, the first mobile short-message that described first mobile phone terminal sends sends to target second mobile phone terminal through described mobile communication system, described Big Dipper base station, described Big Dipper RDSS system, described Big Dipper mobile base station and/or described Big Dipper wifi base station.
Preferably, S1 is specially:
By the region that the mobile communication signal that described Big Dipper mobile base station and/or described Big Dipper wifi base station are arranged at described mobile communication system does not cover, for providing communication service for multiple described second mobile phone terminal.
Preferably, S2 is specially:
The second mobile short-message that described second mobile phone terminal sends is sent to described portable mobile communication base station, after described portable mobile communication base station receives described second mobile short-message, by described first message conversion equipment, described second mobile short-message is converted to the second Big Dipper short message, again through described first Big Dipper RDSS terminal equipment and described Big Dipper RDSS system transfers to described Big Dipper base station, described second Big Dipper short message is reduced to described second mobile short-message by described Big Dipper base station, again described second mobile short-message is transferred to described mobile communication system, described second mobile short-message is sent to target first mobile phone terminal by described mobile communication system,
And/or
Second mobile short-message to be sent is converted to data format and is sent to described wifi routing device by described second mobile phone terminal, after described wifi routing device receives the second mobile short-message of described data format, by described second message conversion equipment, the second mobile short-message of described data format is converted to the second Big Dipper short message, again through described second Big Dipper RDSS terminal equipment and described Big Dipper RDSS system transfers to described Big Dipper base station, described second Big Dipper short message is reduced to the second mobile short-message by described Big Dipper base station, again described second mobile short-message is transferred to described mobile communication system, described second mobile short-message is sent to target first mobile phone terminal by described mobile communication system,
Preferably, S3 is specially:
First mobile short-message is sent to described mobile communication system by described first mobile phone terminal, described first mobile short-message is transferred to described Big Dipper base station by described mobile communication system, described first mobile short-message is converted to the first Big Dipper short message by described Big Dipper base station, again described first Big Dipper short message is sent to described first Big Dipper RDSS terminal equipment by described Big Dipper RDSS system, described first Big Dipper short message received is transferred to described first message conversion equipment by described first Big Dipper RDSS terminal equipment, described first Big Dipper short message is converted to the first mobile short-message and is transferred to described portable mobile communication base station by described first message conversion equipment, by described portable mobile communication base station, described first mobile short-message is sent to target second mobile phone terminal again,
And/or
First mobile short-message is sent to described mobile communication system by described first mobile phone terminal, described first mobile short-message is transferred to described Big Dipper base station by described mobile communication system, described first mobile short-message is converted to the first Big Dipper short message by described Big Dipper base station, again described first Big Dipper short message is sent to described second Big Dipper RDSS terminal equipment by described Big Dipper RDSS system, described first Big Dipper short message received is transferred to described second message conversion equipment by described second Big Dipper RDSS terminal equipment, described first Big Dipper short message is converted to the first mobile short-message of data format and is transferred to described wifi routing device by described second message conversion equipment, by described wifi routing device, the first mobile short-message of described data format is sent to target second mobile phone terminal again, first mobile short-message of described data format is converted to mobile short-message and shows by described second mobile phone terminal.
The invention has the beneficial effects as follows:
Current existing technology is carried out rational Combination application by the present invention, the great short message coverage having expanded mobile communications network, expanding the service object of Big Dipper RDSS system short message, bringing fabulous Consumer's Experience for there being the mobile communication terminal of demand (mobile phone) user.
Accompanying drawing explanation
Fig. 1 is that the mobile communications network based on Big Dipper RDSS system of the present invention expands communication system architectures schematic diagram;
Fig. 2 is the method flow diagram of application of the present invention based on the mobile communications network expansion communication system of Big Dipper RDSS system.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, mobile communications network based on Big Dipper RDSS system of the present invention expands communication system, comprise: Big Dipper RDSS system, mobile communications network, Big Dipper base station and multiple extension system that communicates, described multiple communication extension system is connected with Big Dipper RDSS system by Big Dipper satellite signal, described Big Dipper base station is connected with Big Dipper RDSS system by Big Dipper satellite signal and/or special line, and is connected with described mobile communication system by cable network.Described Big Dipper RDSS system comprises big-dipper satellite and big-dipper satellite master station; Described mobile communications network comprises mobile communication system and multiple first mobile phone terminal; Described communication extension system comprises multiple second mobile phone terminal, Big Dipper mobile base station and/or Big Dipper wifi base station.Described big-dipper satellite is connected with described Big Dipper mobile base station and/or described Big Dipper wifi base station by Big Dipper satellite signal; Described Big Dipper base station is connected with described Big Dipper RDSS system by Big Dipper satellite signal and/or special line, and described Big Dipper base station is connected with described mobile communication system by cable network.Described Big Dipper mobile base station comprises portable mobile communication base station, the first Big Dipper RDSS terminal equipment and the first message conversion equipment, and described portable mobile communication base station, described first message conversion equipment and described first Big Dipper RDSS terminal equipment are linked in sequence.Described Big Dipper wifi base station comprises wifi routing device, the second Big Dipper RDSS terminal equipment and the second message conversion equipment, and described wifi routing device, described second message conversion equipment and described second Big Dipper RDSS terminal equipment are linked in sequence.
As shown in Figure 2, application of the present invention, based on the method for the mobile communications network expansion communication system of Big Dipper RDSS system, comprises the following steps:
S1, by the region that the mobile communication signal that described communication extension system is arranged at described mobile communication system does not cover;
S1 is specially:
By the region that the mobile communication signal that described Big Dipper mobile base station and/or described Big Dipper wifi base station are arranged at described mobile communication system does not cover, for providing communication service for multiple described second mobile phone terminal.
S2, the second mobile short-message that described second mobile phone terminal sends sends to target first mobile phone terminal through described Big Dipper mobile base station and/or described Big Dipper wifi base station, described Big Dipper RDSS system, described Big Dipper base station and described mobile communication system;
S2 is specially:
The second mobile short-message that described second mobile phone terminal sends is sent to described portable mobile communication base station, after described portable mobile communication base station receives described second mobile short-message, by described first message conversion equipment, described second mobile short-message is converted to the second Big Dipper short message, again through described first Big Dipper RDSS terminal equipment and described Big Dipper RDSS system transfers to described Big Dipper base station, described second Big Dipper short message is reduced to described second mobile short-message by described Big Dipper base station, again described second mobile short-message is transferred to described mobile communication system, described second mobile short-message is sent to target first mobile phone terminal by described mobile communication system,
And/or
Second mobile short-message to be sent is converted to data format and is sent to described wifi routing device by described second mobile phone terminal, after described wifi routing device receives the second mobile short-message of described data format, by described second message conversion equipment, the second mobile short-message of described data format is converted to the second Big Dipper short message, again through described second Big Dipper RDSS terminal equipment and described Big Dipper RDSS system transfers to described Big Dipper base station, described second Big Dipper short message is reduced to the second mobile short-message by described Big Dipper base station, again described second mobile short-message is transferred to described mobile communication system, described second mobile short-message is sent to target first mobile phone terminal by described mobile communication system,
S3, the first mobile short-message that described first mobile phone terminal sends sends to target second mobile phone terminal through described mobile communication system, described Big Dipper base station, described Big Dipper RDSS system, described Big Dipper mobile base station and/or described Big Dipper wif i base station.
S3 is specially:
First mobile short-message is sent to described mobile communication system by described first mobile phone terminal, described first mobile short-message is transferred to described Big Dipper base station by described mobile communication system, described first mobile short-message is converted to the first Big Dipper short message by described Big Dipper base station, again described first Big Dipper short message is sent to described first Big Dipper RDSS terminal equipment by described Big Dipper RDSS system, described first Big Dipper short message received is transferred to described first message conversion equipment by described first Big Dipper RDSS terminal equipment, described first Big Dipper short message is converted to the first mobile short-message and is transferred to described portable mobile communication base station by described first message conversion equipment, by described portable mobile communication base station, described first mobile short-message is sent to target second mobile phone terminal again,
And/or
First mobile short-message is sent to described mobile communication system by described first mobile phone terminal, described first mobile short-message is transferred to described Big Dipper base station by described mobile communication system, described first mobile short-message is converted to the first Big Dipper short message by described Big Dipper base station, again described first Big Dipper short message is sent to described second Big Dipper RDSS terminal equipment by described Big Dipper RDSS system, described first Big Dipper short message received is transferred to described second message conversion equipment by described second Big Dipper RDSS terminal equipment, described first Big Dipper short message is converted to the first mobile short-message of data format and is transferred to described wifi routing device by described second message conversion equipment, by described wifi routing device, the first mobile short-message of described data format is sent to target second mobile phone terminal again, first mobile short-message of described data format is converted to mobile short-message and shows by described second mobile phone terminal.
Generally, the present invention is exactly Big Dipper base station about the same, the base station built on one or more and existing mobile communications network, this base station connects mobile communication system by wire link, the mobile communications network based on portable mobile communication base station be in beyond mobile communications network coverage or the cordless communication network be made up of wifi routing device is connected by Big Dipper RDSS system wireless short message link, by these two kinds of networks realize beyond mobile communications network coverage mobile device (mobile phone) and coverage in the short message communication of mobile device (mobile phone), and then the coverage of expanding mobile communication network.
System of the present invention is primarily of Big Dipper base station, Big Dipper RDSS terminal equipment, the formations such as wifi routing device or portable mobile communication base station, Big Dipper RDSS system, mobile communication system (2G/3G/4G), satellite navigation and location system (dipper system/gps system/GLONASS system/Galileo system).Big Dipper base station is connected by special line and existing mobile communications network, realizes mobile device (mobile phone) in mobile communications network signal cover and mobile communications network signal cover is outer and short message communication between mobile device (mobile phone) that Big Dipper RDSS satellite-signal can cover.Big Dipper RDSS terminal equipment passes through serial ports, SPI interface or LAN mouth connect the communication network that wifi routing device or portable mobile communication base station build a movement, and equipment has the position and speed information that multi-mode satellite positioning functions can determine carrier in real time in addition.The mobile device (mobile phone) be in wifi signal or portable mobile communication base station signal coverage just can realize the communication with Big Dipper RDSS terminal equipment by any one in both, if adopt the mode of portable mobile communication base station to connect, then the user of mobile device (mobile phone) only need operate according to the normal transmission note that receives; If adopt wifi routing mode to connect, then mobile device (mobile phone) realizes the transmitting-receiving of short message by conversion messaging format.Big Dipper RDSS terminal equipment realizes realizing communicating with the Big Dipper base station be connected on mobile communications network by the wireless short message link of big-dipper satellite, realizes the short message communication with the associated mobile device (mobile phone) on mobile communications network by Big Dipper base station.
After application technical scheme of the present invention, in practical application, such as scientific expedition or exploring party at sea or the first-class mobile communication signal in wasteland cannot cover regional work time, only need the Big Dipper mobile base station in outfit one playscript with stage directions system or Big Dipper wifi base station, just can ensure between all team members or team member and the relatives in city or contacted by SMS between friend.
By adopting technique scheme disclosed by the invention, obtain effect useful as follows:
Current existing technology is carried out rational Combination application by the present invention, the great short message coverage having expanded mobile communications network, expanding the service object of Big Dipper RDSS system short message, bringing fabulous Consumer's Experience for there being the mobile communication terminal of demand (mobile phone) user.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. the mobile communications network of a Big Dipper RDSS system expands communication system, it is characterized in that, comprise: Big Dipper RDSS system, mobile communications network, Big Dipper base station and multiple extension system that communicates, described multiple communication extension system is connected with Big Dipper RDSS system by Big Dipper satellite signal, described Big Dipper base station is connected with Big Dipper RDSS system by Big Dipper satellite signal and/or special line, and is connected with mobile communication system by cable network; Described Big Dipper RDSS system comprises big-dipper satellite and big-dipper satellite master station; Described mobile communications network comprises mobile communication system and multiple first mobile phone terminal; Described communication extension system comprises multiple second mobile phone terminal, Big Dipper mobile base station and/or Big Dipper wifi base station; Described big-dipper satellite is connected with described Big Dipper mobile base station and/or described Big Dipper wifi base station by Big Dipper satellite signal; Described Big Dipper base station is connected with described Big Dipper RDSS system by Big Dipper satellite signal and/or special line, and described Big Dipper base station is connected with described mobile communication system by cable network; Described Big Dipper mobile base station comprises portable mobile communication base station, the first Big Dipper RDSS terminal equipment and the first message conversion equipment, and described portable mobile communication base station, described first message conversion equipment and described first Big Dipper RDSS terminal equipment are linked in sequence; Described Big Dipper wifi base station comprises wifi routing device, the second Big Dipper RDSS terminal equipment and the second message conversion equipment, and described wifi routing device, described second message conversion equipment and described second Big Dipper RDSS terminal equipment are linked in sequence.
2. application rights requires that the mobile communications network of Big Dipper RDSS system described in 1 expands a method for communication system, it is characterized in that, comprises the following steps:
S1, by the region that the mobile communication signal that described communication extension system is arranged at described mobile communication system does not cover;
S2, the second mobile short-message that described second mobile phone terminal sends sends to target first mobile phone terminal through described Big Dipper mobile base station and/or described Big Dipper wifi base station, described Big Dipper RDSS system, described Big Dipper base station and described mobile communication system;
S3, the first mobile short-message that described first mobile phone terminal sends sends to target second mobile phone terminal through described mobile communication system, described Big Dipper base station, described Big Dipper RDSS system, described Big Dipper mobile base station and/or described Big Dipper wifi base station;
S1 is specially:
By the region that the mobile communication signal that described Big Dipper mobile base station and/or described Big Dipper wifi base station are arranged at described mobile communication system does not cover, for providing communication service for multiple described second mobile phone terminal;
S2 is specially:
The second mobile short-message that described second mobile phone terminal sends is sent to described portable mobile communication base station, after described portable mobile communication base station receives described second mobile short-message, by described first message conversion equipment, described second mobile short-message is converted to the second Big Dipper short message, again through described first Big Dipper RDSS terminal equipment and described Big Dipper RDSS system transfers to described Big Dipper base station, described second Big Dipper short message is reduced to described second mobile short-message by described Big Dipper base station, again described second mobile short-message is transferred to described mobile communication system, described second mobile short-message is sent to target first mobile phone terminal by described mobile communication system,
And/or
Second mobile short-message to be sent is converted to data format and is sent to described wifi routing device by described second mobile phone terminal, after described wifi routing device receives the second mobile short-message of described data format, by described second message conversion equipment, the second mobile short-message of described data format is converted to the second Big Dipper short message, again through described second Big Dipper RDSS terminal equipment and described Big Dipper RDSS system transfers to described Big Dipper base station, described second Big Dipper short message is reduced to the second mobile short-message by described Big Dipper base station, again described second mobile short-message is transferred to described mobile communication system, described second mobile short-message is sent to target first mobile phone terminal by described mobile communication system,
S3 is specially:
First mobile short-message is sent to described mobile communication system by described first mobile phone terminal, described first mobile short-message is transferred to described Big Dipper base station by described mobile communication system, described first mobile short-message is converted to the first Big Dipper short message by described Big Dipper base station, again described first Big Dipper short message is sent to described first Big Dipper RDSS terminal equipment by described Big Dipper RDSS system, described first Big Dipper short message received is transferred to described first message conversion equipment by described first Big Dipper RDSS terminal equipment, described first Big Dipper short message is converted to the first mobile short-message and is transferred to described portable mobile communication base station by described first message conversion equipment, by described portable mobile communication base station, described first mobile short-message is sent to target second mobile phone terminal again,
And/or
First mobile short-message is sent to described mobile communication system by described first mobile phone terminal, described first mobile short-message is transferred to described Big Dipper base station by described mobile communication system, described first mobile short-message is converted to the first Big Dipper short message by described Big Dipper base station, again described first Big Dipper short message is sent to described second Big Dipper RDSS terminal equipment by described Big Dipper RDSS system, described first Big Dipper short message received is transferred to described second message conversion equipment by described second Big Dipper RDSS terminal equipment, described first Big Dipper short message is converted to the first mobile short-message of data format and is transferred to described wifi routing device by described second message conversion equipment, by described wifi routing device, the first mobile short-message of described data format is sent to target second mobile phone terminal again, first mobile short-message of described data format is converted to mobile short-message and shows by described second mobile phone terminal.
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| CN103152709A (en) * | 2013-01-31 | 2013-06-12 | 成都天奥电子股份有限公司 | Method and system achieving communication of compass terminal and network terminal |
| CN103200548B (en) * | 2013-03-07 | 2016-01-06 | 成都新橙北斗智联有限公司 | Networking client and Big Dipper RDSS terminal short intercommunicating system and method |
| CN103220744B (en) * | 2013-04-09 | 2016-08-31 | 大唐移动通信设备有限公司 | It is applied to communication system and the method for the vehicles |
| CN104301023A (en) * | 2013-07-18 | 2015-01-21 | 成都国星通信有限公司 | Voice communication system based on Beidou RDSS and communication method thereof |
| CN103825648A (en) * | 2014-01-13 | 2014-05-28 | 上海美迪索科电子科技有限公司 | System and method allowing multiple terminals to share one Beidou short message communication module |
| CN104052539A (en) * | 2014-06-11 | 2014-09-17 | 北京神州天鸿数码技术有限公司 | Method and device for satellite communication of smart phones through Beidou terminals |
| CN104217323B (en) * | 2014-06-27 | 2018-05-01 | 武汉理工大学 | A kind of electric paying method at the depopulated zone scenic spot based on RDSS and NFC |
| CN105490732B (en) * | 2015-12-11 | 2018-06-22 | 泛太通信导航有限公司 | MIMO satellite service systems and the method that MIMO satellite services are provided |
| CN105652288A (en) * | 2016-03-18 | 2016-06-08 | 陕西永诺信息科技有限公司 | Novel Beidou foundation reinforcing system |
| CN105873197B (en) * | 2016-03-23 | 2019-05-24 | ***通信集团江苏有限公司 | A kind of method and device of intelligent management information transmission |
| CN106160836B (en) * | 2016-06-29 | 2019-03-29 | 中国电子科技集团公司第五十四研究所 | A kind of multi-user's route addressing method of Beidou RDSS micro-base station |
| CN107064959A (en) * | 2017-02-03 | 2017-08-18 | 北京子午精航科技有限公司 | The enhanced forwarding engine apparatus and its implementation of Beidou satellite navigation system |
| CN107105414A (en) * | 2017-04-26 | 2017-08-29 | 成都国星通信有限公司 | A kind of income system and method for Big Dipper RDSS short messages and SMS |
| CN110493243A (en) * | 2019-08-27 | 2019-11-22 | 权浩 | Information query method and device based on Big Dipper short message |
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