• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Telecommunications system comprising: - at least one station on a stationary high altitude platform (SHA_1) for establishing at least one direct bidirectional communication link (231) with another high altitude platform (SHA_2), - at least one station network gateway (SP_1, SP_2) on the ground, for communicating (201,203,202,204) a heart network (RC) with at least one station placed on a stationary high altitude platform (SHA_1, SHA_2), - a plurality of stations placed in balloons drifters (B_1, B_2, B_3, B_5, B_6) to establish a direct bidirectional communication link (211,212,213,214) with at least one station on a stationary high altitude platform (SHA_1, SHA_2) or / and at least one other station in a drifting flask and - a plurality of user terminals (TU_1, TU_2, TU_3, TU_4, TU_5, TU_6, TU_7) for establishing a direct bidirectional communication link (221,222,223,224 , 225,226,227) with a station on a stationary high altitude platform and / or at least one station in a drifting balloon.
    公开号:FR3064443A1
    申请号:FR1700308
    申请日:2017-03-23
    公开日:2018-09-28
    发明作者:Jean Didier Gayrard
    申请人:Thales SA；
    IPC主号:
    专利说明:

    The field of the invention is that of telecommunications systems using communication stations placed on stationary high altitude platforms to deploy an access network to a core network, for example an Internet access network, in areas geographic areas with low population density and without sufficient or suitable terrestrial telecommunications infrastructure.
    The invention relates to a telecommunications system based on a network of stationary high altitude platforms and supplemented by a set of drifting balloons in order to increase the area of coverage of the global network and to improve the quality of service to users.
    The term "communication station" or "station" means a station comprising one or more transmitters or receivers, or a set of transmitters and receivers, including accessory equipment, necessary to provide a communication service at a given location.
    A station placed on a high altitude platform (HAPS for High Altitude Platform Station) designates a station installed on an object placed at a high altitude, for example above 18 km and at a specified, nominal, fixed point relative to Earth. A network gateway station designates a land station intended to provide a communication link with a station placed on a high altitude platform and to control access to the core network.
    FIG. 1 represents an example of a station telecommunications system placed on stationary platforms at high altitude for broadband access to a terrestrial network. This system includes a station placed on a stationary platform at high altitude
    SHA which communicates on one side with a core network RC via a network gateway station SP and on the other side with a set of user terminals TU_1, TU_2 dispersed in a coverage area ZC to provide them with broadband access to the Internet or other terrestrial communication networks. The stationary high altitude platform SHA is equipped with a communication station or payload comprising means for establishing two-way radio links 121, 122 with the mobile or fixed terminals TU_1, TU_2 and a two-way radio link 101 with the gateway station ST. The gateway station ST comprises means for establishing a communication link 103 for establishing access to the core network RC. The high altitude platform is equipped with motors to compensate for the force of the winds and remain stationary in the sky from the point of view of the user terminals and the gateway station. The ZC coverage area is the geographic area from which the stationary platform at high altitude is visible from the ground with a positive elevation, for example 5 degrees. The higher the flight altitude of the stationary platform at high altitude, the larger the radius of the coverage area. Thus, for example, a stationary high altitude platform flying at an altitude of 20 km allows visibility with an elevation of 5 degrees in a coverage area with a radius of 194 km. The choice of flight altitude is relatively constrained by the presence of strong winds in the stratosphere. However, between 18 and 25 km altitude, the stratospheric winds are weaker (typically less than 20 m / s) and this altitude range is therefore chosen to position the stationary high altitude platforms.
    A system of telecommunications by stations placed on stationary high altitude platforms has drawbacks. A first drawback is the reduced surface area of the coverage area due to the fact that the flight altitude of stationary high altitude platforms is limited in practice to 20 km to benefit from weaker winds. This limitation of the area of the coverage area reduces the number of users likely to benefit from the access service and therefore the profitability of the system.
    A second drawback is the low elevation at which users at the edges of the coverage area see the platform at high altitude stationary in the sky. Thus on the periphery of the coverage area, users will be masked by reliefs, buildings or vegetation. There will therefore be "gray areas" in the coverage where radio links to the terminals are blocked or attenuated by obstacles. Fixed users in shadow areas or mobile users in transit through shadow areas will not be able to access the access service or will access it with poor quality of service.
    The problem targeted by the present invention therefore consists in designing a telecommunications system using stationary high altitude platforms having an extended coverage area beyond the geographical area where the user terminals are in the crosshairs of the high altitude platform.
    American patent US 8718477 describes a telecommunications system based on a network of drifting balloons according to an ad-hoc mesh network principle.
    The advantage of such a system is that it offers a large coverage area, but has the drawback of deploying a large number of balloons to ensure long-term coverage, that is to say continuous over time, of an area. given geographic area. Indeed, a balloon being by nature drifting, it moves according to the winds and its coverage area varies in time according to this displacement.
    It is therefore desirable to propose a telecommunications system which retains certain advantages of systems using stationary high altitude platforms while ensuring a large geographic area of coverage, more reliable and durable than that offered with a network of drifting balloons.
    The invention provides a telecommunications system based on one or more station (s) placed on stationary high altitude platform (s) to ensure reliable and lasting geographic coverage for a given area. The invention proposes to complement this system with a fleet of drifting balloons in order to extend the coverage area beyond the geographic area where the user terminals are in the crosshairs of high altitude platforms but also to improve the quality service in the coverage area.
    The subject of the invention is therefore a telecommunications system comprising:
    at least one station placed on a stationary high altitude platform suitable for establishing at least one direct two-way communication link with at least one station placed on another high altitude platform,
    - at least one network gateway station on the ground, configured to communicate a core network with said at least one station placed on a stationary high altitude platform,
    a plurality of stations placed in drifting balloons each being adapted to establish a direct two-way communication link with said at least one station placed on a stationary high altitude platform or / and at least one other station placed in a drifting balloon and
    - A plurality of user terminals each being adapted to establish a direct two-way communication link with a station placed on a stationary high altitude platform and / or at least one station placed in a drifting balloon.
    According to a particular aspect of the invention, a user terminal comprises a spatial diversity communication device configured to communicate simultaneously with a station placed on a stationary high altitude platform and a station placed in a drifting balloon when the user terminal is in range of the said station placed on a stationary high altitude platform and of the said station placed in a drifting balloon.
    According to a particular aspect of the invention, said at least one station placed on a stationary high altitude platform is configured to establish a two-way radio frequency communication link with said at least one network gateway station.
    According to a particular aspect of the invention, said at least one station placed on a stationary high altitude platform comprises a switch for activating at least one communication link with at least one other station placed on a stationary high altitude platform when the link communication between said at least one station placed on the stationary high altitude platform and said at least one network gateway station is inoperative.
    According to a particular aspect of the invention, a direct two-way communication link between a user terminal and a station placed on a stationary high altitude platform or / and a station placed in a drifting balloon is a radiofrequency link.
    According to a particular aspect of the invention, a communication link between two stations placed in two drifting balloons or between a station placed in a drifting balloon and said at least one station placed on the platform at high stationary altitude are optical space links free or radio frequency links.
    According to a particular aspect of the invention, said at least one direct bidirectional communication link between two stations placed on two stationary high altitude platforms is an optical link in free space.
    According to a particular aspect of the invention, a stationary high altitude platform is an aerostat equipped with propulsion means to remain stationary around a specified point, nominal and fixed relative to the Earth.
    Other characteristics and advantages of the present invention will appear better on reading the description which follows in relation to the appended drawings which represent:
    - Figure 1, a diagram of a telecommunications system based on stations placed on stationary high altitude platforms,
    FIG. 2, a diagram of an example of a telecommunications system according to the invention,
    FIG. 3, a diagram of a part of a telecommunications system according to the invention in a first particular application configuration,
    FIG. 4, a diagram of a part of a telecommunications system according to the invention in a second configuration of particular application,
    FIG. 5, a diagram of part of a telecommunications system according to the invention in a third particular application configuration,
    FIG. 6, a diagram of a part of a telecommunications system according to the invention in a fourth particular application configuration,
    FIG. 7, a diagram of a part of a telecommunications system according to the invention, in a fifth configuration of a particular application,
    FIG. 8, a diagram of an example of payload or station placed on a stationary high altitude platform belonging to a system according to the invention,
    - Figure 9, a diagram of an example of payload or station placed in a drifting balloon which complements the telecommunications system according to the invention.
    FIG. 2 represents an example of a telecommunications system according to an embodiment of the invention.
    The system according to the invention comprises at least one stationary high altitude platform SHA_1, SHA_2 which communicates with an RC core network via a network gateway station SP_1, SP_2 on the ground. The stationary high altitude platform SHA_1, SHA_2 is, for example, an aerostat. It is provided with propulsion means, typically a motor, allowing it to compensate for the force of the winds to remain stationary around a specified point, nominal, fixed relative to the Earth and defining the center of a given geographical area in which is located the network gateway station SP_1, SP_2. By stationary is meant here the ability to remain fixed around a point or above an area of the Earth or to move slightly around a point, for example in a circular motion, or above of a restricted geographical area. The high altitude platform can be a stratospheric platform. It includes a payload or station which includes means for establishing a communication link 201,202 with the network gateway station located on the ground in the area above which the platform is parked. The network gateway station SP_1, SP_2 is a ground station comprising on the one hand means for communicating with a station placed on a platform at high altitude, in particular a parabolic antenna and an associated transmitter / receiver and on the other hand means for interface the core network. The communication link 201.202 between a stationary high altitude platform SHA_1, SHA_2 and a network gateway SP_1, SP_2 is preferably a radio frequency link but can also be an optical link in free space or an infrared laser link. The network gateway station SP_1, SP_2 also comprises means for establishing a communication link 203,204 with a core network RC, for example a network for accessing the Internet. The communication link 203,204 can be a cable, fiber optic or radio link.
    The system according to the invention can comprise several pairs associating a station placed on a stationary high altitude platform and a network gateway station on the ground. Each of these pairs makes it possible to define a geographic coverage area 243,244 in which a terminal TU_2, TU_6, TU_7 can establish a communication link 222,224,226 with a station placed on a stationary high altitude platform SHA_1, SHA_2. The communications between a terminal and the core network RC pass through the network gateways SP_1, SP_2.
    The payload or station of each stationary high altitude platform SHA_1, SHA_2 may include a directional antenna for communicating with a network gateway SP_1, SP_2. The fact that the platform is stationary guarantees a fixed coverage area 243,244 in which access to the RC core network is guaranteed for the terminals located in this area.
    A drawback of stationary high altitude platforms of the aerostat type is that they correspond to expensive equipment, it is therefore not desirable to use a large number of them and therefore a telecommunications system based solely on such equipment does not allow to ensure a broad global geographic coverage in a competitive manner.
    To complement the system based on high altitude platforms and extend the base coverage area 243,244, it is proposed to use a fleet of drifting balloons B_1, B_2, B_3, B_5, B_6 equipped with means of communication to establish links 212 communications between them but also communications links 211,213,214 with a station placed on a platform at high altitude. These 211,212,213,214 links can be optical links or radio links. The scrolling balloons B_1, B_2, B_3, B_5, B_6 also include communication means for establishing communication links 221,223,225,227 with ground terminals TU_1, TU_2, TU_3, TU_4, TU_5 ,. The links 221,222,223,224,225,226,227,228 can be radiofrequency links according to the 4G / LTE mobile communication standard or any other radiofrequency telecommunication standard.
    A terminal TU_1 located in an area outside the coverage area 244 of a high altitude platform SHA_1 can access the core network RC via a drifting balloon B_1 if this terminal TU_1 is in direct range of a drifting balloon B_1. If this is the case, communications are relayed via one or more drifting balloons B_1, B_2 to the nearest high altitude platform SHA_1 which in turn relays communications to a network gateway station SP_1. In particular, if balloon B_1 is not in direct range of a high altitude platform SHA_1, it can establish a link with the nearest SHA_1 platform via another drifting balloon B_2 in range.
    Another scenario, described in FIG. 3, relates to a terminal TU_4 which is within range of a station placed on a high altitude platform SHA_2 but whose connection with this station is obscured or strongly attenuated by an obstacle M such as a geographic obstacle, for example a building or a relief. In this case, the communication between the terminal TU_4 and the station placed on a high altitude platform SHA_2 can also pass through a drifting balloon B_5 which acts as a relay because the terminal TU_4 is in the coverage area 245 of the balloon B_5.
    The geographic coverage area 245.246 of a balloon drifting B_1, B_2 is significantly smaller than that of a high altitude platform SHA_1 in particular because it is not possible to carry on a complex antenna (typically an active antenna ) suitable for generating a set of directional emission reception beams to compensate for the movements and drift of the drifting balloon because it is mobile, by nature, moves according to the winds and can turn on itself. Typically the coverage area 245.246 of a drifting balloon equipped with a single antenna (typically a passive antenna with a single beam receiving transmission) has a diameter of about thirty kilometers corresponding to a flight altitude of the drifting balloon of 20 km and an elevation of 30 degrees. Also, the use of drifting balloons alone does not ensure a stable, wide, continuous and lasting coverage area due to the mobility of the balloons.
    Thus, it is advantageous to combine the network of stationary high altitude platforms with a fleet of drifting balloons in order to constitute a stable base coverage area and to increase this basic coverage area thanks to the drifting balloons.
    According to a particular embodiment of the invention illustrated in FIG. 4, one or more TU_2 terminals can be provided with a spatial diversity communication device to communicate simultaneously with a drifting balloon B_2 and a high altitude platform SHA_1. Such a communication device may, for example, take the form of a Input (Multiple Input Multiple Output) transmitter / receiver comprising two antennas for transmitting and receiving signals both to / from a drifting balloon and a platform to stationary high altitude. The signals received on the two antennas are combined to improve the link budget by exploiting the spatial diversity between a link 225 (terminal, drifting balloon) and a link 226 (terminal, high altitude platform). Thus, the resulting signal-to-noise ratio and therefore the quality of service are improved for the terminal TU_2. The implementation of a type type technique within a TU_2 receiver requires the synchronization of the transmitters on board the high altitude platform SHA_1 and the drifting balloon B_2 by means of the link 215.
    A terminal TU_2 can activate a spatial diversity communication device when it is in the coverage area 244 of a high altitude platform SHA_1 and in the coverage area 245 of a drifting balloon B_2. Alternatively, the spatial diversity communication device can also select the link presenting the best signal to noise ratio, from the two available communication links 225, 226, according to the relative movements of the terminal, the drifting balloon and the platform at high altitude.
    FIG. 5 illustrates a use case of the invention making it possible to extend the coverage area 242 of the telecommunications system beyond the coverage area 244 of the stationary high altitude platform SHA_1. The terminal TU_3 is not located in the base coverage area 244 of the stationary high altitude platform SHA_1, but is located in the coverage area 247 of balloon B_2 and can therefore establish a link 223 with balloon B_2. Balloon B_2 is in the visibility zone 241 of the stationary high altitude platform SHA_1 and can establish a bidirectional link 211 with the stationary high altitude platform SHA_1 to relay the link 223 to the stationary high altitude platform SHA_1. The TU_3 terminal obtains an access service to the RC core network through the links 223, 211, 201 and 203.
    FIG. 6 illustrates a use case of the invention for providing an access service to a terminal TU_1 located outside the extended coverage area 242 of the telecommunications system. The terminal TU_1 is in the coverage area 246 of a balloon B_1 and establishes a connection 221 with it. Balloon B_1 is not in visibility zone 241 of the stationary high altitude platform SHA_1 but it is in visibility of a second balloon B_2 which is included in visibility zone 241 of platform SHA_1. Balloon B_1 establishes a connection 212 with balloon B_2, balloon B_2 establishes a connection 211 with platform SHA_1. The terminal TU_1 obtains an access service to the RC core network through the links 221,212,211,201 and 203.
    According to another embodiment of the invention, illustrated in FIG. 7, each stationary high altitude platform SHA_1 can be provided with a communication device for establishing a communication link 231 with another stationary high altitude platform SHA_2. The link 231 between two high altitude platforms can be achieved by an optical link in free space or infrared laser link. The link 231 can be used in the event of failure of a communication link 201 between a station placed on a stationary high altitude platform SHA_1 and a network gateway station SP_1. For example, if the link 201 between the platform SHA_1 and the gateway station SP_1 is cut or inoperative because of a meteorological event EV (clouds or thunderstorm) which affects the transmissions between these two pieces of equipment, a backup link 231 between the SHA_1 platform and another SHA_2 platform can be used to access the RC core network via another network gateway station SP_2. A back-up link 231 has greater availability because it is an air-air link between two high altitude platforms which park, for example, in the stratosphere or, more generally, in an area of the atmosphere above the clouds and bad weather (rain, snow, hail ...). On the contrary, a link between a station placed on a high altitude platform and a gateway station located on the ground is more sensitive to the attenuation and distortion of radio signals due in particular to bad weather (rain, snow, hail ...) .
    FIG. 8 shows diagrammatically an example of the payload of a stationary high altitude platform SHA_1, SHA_2 according to an embodiment of the invention. The payload 40 includes a user access payload 50 which includes a telecommunication device for establishing one or more bidirectional links 222 with user terminals TU, a balloon access payload 60 which includes a telecommunication device for establishing a or several bidirectional links 211 with at least one free balloon deriving from BL, a gateway access payload 70 which comprises a telecommunication device for establishing one or more bidirectional links 201 with at least one network gateway station SP, an inter-payload platforms 80 which comprises a telecommunication device for establishing one or more bidirectional links 231 with at least one stationary high altitude platform SHA and switching and control equipment 90.
    The user access payload 50 comprises a set of active antennas 51 capable of generating a set of orientable beams and of receiving and transmitting radio frequency signals towards users TU, a set of modulator / demodulator (eNode-B by example) 52 capable of demodulating and modulating radio signals according to, for example, the 4G / LTE mobile communication standard or any other radiofrequency telecommunications standard. The user access payload 50 is connected to the switching and control member 90 in order to exchange the information received and intended for the user terminals TU and any other information capable of ensuring the proper functioning of the access payload user 50, such as information for pointing the antennas 51 or the operational configuration of the modems 52.
    The set of active antennas 51 includes the aerials of the antenna (visible and electronic parts of an antenna system), the transmitting power amplifiers and the low noise reception preamplifiers. Optionally, the set of active antennas 51 includes analog to digital and digital to analog conversion means for interfacing with all of the modulators / demodulators 52 in digital format. Optionally, the set of active antennas 51 includes digital beam formers capable of generating and pointing a plurality of antenna beams towards the user terminals.
    The balloon access payload 60 includes a set of optical terminals or antennas 61 capable of establishing a bidirectional optical or radio frequency link 211 with drifting balloons B, a set of modulator / demodulator 62. The balloon access payload 60 is connected to the switching and control member 90 in order to exchange the information received and intended for the balloons B and any other information capable of ensuring the proper functioning of the balloon access payload 60. The optical communication links are free space links and can be implemented using infrared lasers.
    The gateway access payload 70 comprises a set of optical terminals or antennas 71 capable of establishing a bidirectional optical or radio link 201 with at least one network gateway station SP, a set of modulator / demodulator 72. The payload d gateway access 70 is connected to the switching and control unit 90 in order to exchange the information received and intended for network gateway stations and all other information capable of ensuring the proper functioning of the gateway access payload.
    The inter-platforms payload 80 (Inter-SHA) comprises at least one optical terminal 81 capable of establishing a bidirectional optical link 231 with another stationary high altitude platform SHA, and at least one modulator / demodulator 82. The Inter payload -SHA 80 is connected to the switching and control unit 90 in order to exchange the information received and intended for the other stationary high altitude platform SHA and all other information capable of ensuring the proper functioning of the payload Inter- SHA.
    The switching and control unit 90 routes information and data between the four payloads, the command and control of the four payloads and the interface with the avionics system of the stationary platform at high altitude.
    FIG. 9 represents an example of payload or station 41 of a free balloon deriving from BL according to an embodiment of the invention. The payload 41 includes a user access payload 55 which includes a telecommunication device for establishing one or more bidirectional links 221 with user terminals TU, a platform link payload 65 which includes a telecommunication device for establishing a bidirectional link 211 with at least one stationary platform at high altitude SHA and switching and control equipment 91.
    The user access payload 55 comprises at least one antenna 56 capable of receiving and transmitting radio signals to users TU and at least one modulator / demodulator (eNode-B for example) 57 capable of demodulating and modulating the radio signals according to, for example, the 4G / LTE mobile communication standard or any other radiofrequency telecommunications standard. The user access payload 55 is connected to the switching and control unit 91 in order to exchange the information received and intended for the user terminals.
    The link-platform payload 65 comprises an optical terminal or a steerable antenna 66 capable of establishing a bidirectional optical or radio frequency link 211 with a stationary high altitude platform SHA and a modulator / demodulator 62. The link-platform payload 65 is connected to the switching and control unit 91 in order to exchange the information received and intended for a stationary platform at high altitude SHA and all other information capable of ensuring the proper functioning of the link-platform payload 65. Communication links optics are free space links and can be implemented using infrared lasers.
    Optionally, the payload 41 includes a balloon access payload which includes telecommunication means for establishing a bidirectional link 212 with another balloon B.
    权利要求:
    Claims (8)
    [1" id="c-fr-0001]
    1. Telecommunications system comprising:
    at least one station placed on a stationary high altitude platform (SHA_1) adapted to establish at least one direct two-way communication link (231) with at least one station placed on another high altitude platform (SHA_2),
    - at least one network gateway station (SP_1, SP_2) on the ground, configured to communicate (201,203,202,204) a core network (RC) with said at least one station placed on a stationary high altitude platform (SHA_1, SHA_2),
    - a plurality of stations placed in drifting balloons (B_1, B_2, B_3, B_5, B_6) each being adapted to establish a direct two-way communication link (211,212,213,214) with said at least one station placed on a platform at high stationary altitude ( SHA_1, SHA_2) or / and at least one other station placed in a drifting balloon and
    - a plurality of user terminals (TU_1, TU_2, TU_3, TU_4, TU_5, TU_6, TU_7) being each adapted to establish a direct two-way communication link (221,222,223,224,225,227) with a station placed on a platform at high stationary altitude or / and at minus one station placed in a drifting balloon.
    [2" id="c-fr-0002]
    2. The telecommunications system as claimed in claim 1, in which a user terminal (TU_1, TU_2, TU_3, TU_4, TU_5, TU_6, TU_7) comprises a spatial diversity communication device configured to communicate simultaneously with a station placed on a high platform. stationary altitude (SHA_1, SHA_2) and a station placed in a drifting balloon (B_1, B_2, B_3, B_5, B_6) when the user terminal (TU_2, TU_4) is in simultaneous range from said station placed on a platform at high altitude stationary (SHA_1) and said station placed in a drifting balloon (B_2).
    [3" id="c-fr-0003]
    3. Telecommunications system according to claim 1, in which said at least one station placed on a stationary high altitude platform (SHA_1, SHA_2) is configured to establish a two-way radiofrequency communication link with said at least one network gateway station. (SP_1, SP_2).
    [4" id="c-fr-0004]
    4. Telecommunication system according to claim 1, in which said at least one station placed on a stationary high altitude platform (SHA_1) comprises a switch for activating at least one communication link with at least one other station placed on a stationary high altitude platform (SHA_2) when the communication link between said at least one station placed on the stationary high altitude platform (SHA_1) and said at least one network gateway station (SP_1) is inoperative.
    [5" id="c-fr-0005]
    5. Telecommunications system according to claim 1, in which a direct two-way communication link (221,222,223,224,225,226,227) between a user terminal (TU_1, TU_2, TU_3, TU_4, TU_5, TU_6, TU_7) and a station placed on a platform stationary high altitude (SHA_1, SHA_2) or / and a station placed in a drifting balloon (B_1, B_2, B_3, B_5, B_6) is a radio frequency link.
    [6" id="c-fr-0006]
    6. Telecommunication system according to one of the preceding claims, in which a communication link (211,212,213,214) between two stations placed in two drifting balloons (B_1, B_2) or between a station placed in a drifting balloon (B_2, B_3, B_5, B_6) and said at least one station placed on the stationary high altitude platform (SHA_1, SHA_2) are free space optical links or radio frequency links
    [7" id="c-fr-0007]
    7. Telecommunication system according to one of the claims
    5 above in which said at least one direct bidirectional communication link (231) between two stations placed on two stationary high altitude platforms (SHA_1, SHA_2) is an optical link in free space.
    [8" id="c-fr-0008]
    8. Telecommunication system according to one of the preceding claims, in which a stationary high altitude platform (SHA_1, SHA_2) is an aerostat equipped with propulsion means to remain stationary around a specified point, nominal and fixed relative to Earth.
    1/8
    SHA
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20180279133A1|2018-09-27|
    AU2018201867A1|2018-10-11|
    US10212610B2|2019-02-19|
    FR3064443B1|2021-03-19|
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    法律状态:
    2018-02-27| PLFP| Fee payment|Year of fee payment: 2 |
    2018-09-28| PLSC| Publication of the preliminary search report|Effective date: 20180928 |
    2020-02-27| PLFP| Fee payment|Year of fee payment: 4 |
    2021-02-25| PLFP| Fee payment|Year of fee payment: 5 |
    2022-02-21| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1700308|2017-03-23|
    FR1700308A|FR3064443B1|2017-03-23|2017-03-23|NETWORK TELECOMMUNICATION SYSTEM OF STATIONARY HIGH ALTITUDE PLATFORMS AND DERIVATING BALLOONS|FR1700308A| FR3064443B1|2017-03-23|2017-03-23|NETWORK TELECOMMUNICATION SYSTEM OF STATIONARY HIGH ALTITUDE PLATFORMS AND DERIVATING BALLOONS|
    US15/919,659| US10212610B2|2017-03-23|2018-03-13|System for telecommunications by network of stationary high-altitude platforms and drifting balloons|
    AU2018201867A| AU2018201867A1|2017-03-23|2018-03-15|System for telecommunications by network of stationary high-altitude platforms and drifting balloons|
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