• 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:
    The invention relates to a computing device (1), a switch (5) connected to the computing device, a user terminal connected to the switch such that a computing device, a switch and a user terminal form a system. centralized communication system and at least one distributed architecture communication system (2) connected to the switch. The switch is arranged to serve as an intermediate system for the centralized architecture communication system as for the distributed architecture communication system.
    公开号:FR3049141A1
    申请号:FR1652385
    申请日:2016-03-21
    公开日:2017-09-22
    发明作者:Patrice Toillon；Francois Guillot
    申请人:Sagem Defense Securite SA；
    IPC主号:
    专利说明:

    The invention relates to a communication network including a communication network for aircraft.
    BACKGROUND OF THE INVENTION
    In the aeronautical field, communication networks serve as support for communications internal to the aircraft, these communications mainly allowing, although not exclusively, the exchange of data between the different elements of avionics.
    Such communication networks comprise, according to a centralized architecture, one or more computing devices (computers, processors, etc.) connected to the avionics and placed in communication with user terminals via switches to ensure the exchange of data. data within the same computing device, between several computing devices or between a computing device and a user terminal.
    It is also possible that the communication networks also comprise one or more distributed architecture communication systems connected to the computing devices and / or the user terminals. For this purpose, for each distributed architecture communication system, one of the switches of the network connects to a gateway equipment which comprises a terminal system (better known by the acronym ES for the English End system) dedicated to this connection. , the gateway equipment itself being connected to said distributed architecture communication system.
    In such cases, the communication network must therefore have a relatively heavy configuration in order to be able to connect the distributed architecture communication system to the rest of the communication network.
    OBJECT OF THE INVENTION
    An object of the invention is to provide a communication network that has a simplified architecture. BRIEF DESCRIPTION OF THE INVENTION With a view to achieving this goal, an aircraft communication network comprising at least one computing device, a switch connected to the computing device, a user terminal connected to the switch is proposed. so that computing organ, switch and user terminal form a centrally-architected communication system, at least one distributed architecture communication system connected to the switch, the switch being arranged to serve as an intermediate system for the system communication with a centralized architecture as for the distributed architecture communication system, part of its input ports and part of its output ports thus being dedicated to a data exchange with the distributed architecture communication system and a part of its input ports and part of its output ports being dedicated to a data exchange with the centralized system, the switch having a memory zone in which the data frames received on its input ports are stored before being retransmitted to the output ports of the switch, the switch being configured to operate in deferred mode.
    In this way, the switch provides data exchange within the centralized architecture communication system, within the distributed architecture communication system and between the centralized architecture communication system and the distributed architecture communication system.
    Advantageously, by virtue of the particular structuring of the communication network, and in particular of the switch, the switch serves as an intermediate system for the distributed architecture communication system so that the switch is directly connected to said distributed architecture communication system. This eliminates the need for connection gateway equipment associated with terminal systems which simplifies the architecture of the communication network.
    Advantageously, thus configured, the communication network ensures and maintains the integrity of the different frames exchanged in the communication network.
    In addition, the segregation of the switch ports, and therefore the associated logical channels, limits the risk that a fault can spread from one communication system to another. In addition, it avoids a disruption of communications not concerned with the passage of data from one communication system to another.
    By "intermediate system" is meant of course in the present application an "Intermediate System" or "IS" in English and "terminal system" means an "End System" or "ES" in English.
    By "deferred mode" is meant of course in the present application a "Store and Forward" mode in English.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood in the light of the following description of non-limiting embodiments of the invention with reference to the attached figures, in which: FIG. 1 schematically illustrates an aircraft communication network; according to a first embodiment of the invention, FIG. 2 diagrammatically illustrates a switch of the communication network illustrated in FIG. 1; FIG. 3 diagrammatically illustrates an aircraft communication network according to a second embodiment of the invention; FIG. 4 schematically illustrates an aircraft communication network according to a third embodiment of the invention, FIG. 5 schematically illustrates an aircraft communication network according to a fourth embodiment of the invention, FIG. switch of a communication network according to a fifth embodiment of the inv ention.
    DETAILED DESCRIPTION OF THE INVENTION
    With reference to FIG. 1, the communication network according to the first embodiment of the invention is an aircraft communication network.
    The communication network here comprises a calculation unit 1 associated with an avionic element of the aircraft (not shown here). The computing unit 1 is for example a computer or a processor or a set of computers and / or processors. Calculation unit 1 hosts multiple applications-avionics functions 3 to be executed, applications-functions 3 specific, for a given configuration, to the avionic element associated with computing unit 1. Calculation unit 1 comprises between other connection units 4 each associated with one or more applications-functions 3 of the computing unit 1. The connection units 4 are here of type ARINC 664 P7 End System,
    The communication network also comprises a switch 5. The switch 5 is connected on the one hand to the computing device 1 and on the other hand to another switch (not shown here) or directly to one or more terminals. users (not shown here) for controlling the data exchanges between the different parts of the computing device 1 and the data exchanges between said 1 computing unit 1 and the user terminal (s). The computing unit 1 and the switch 5 as well as possibly the user terminals form here a communication system with centralized architecture.
    The communication network also comprises a distributed architecture communication system 2. Such a system is well known from the prior art and will therefore not be detailed here. The distributed architecture communication system 2 is connected to the switch 5 for the transmission of data between the switch 5 and subscriber terminals to the distributed architecture communication system 2 (subscriber terminals not shown here).
    In this way, the switch 5 is arranged to serve as an intermediate system to the distributed architecture communication system and is arranged to serve as an intermediate system to the centralized architecture communication system. The switch 5 is thus directly connected to the various communication systems of the communication network.
    The connection may just as well be wireless or non-wired between the computing device 1, the switch 5, the distributed architecture communication system 2, the user terminals and the subscriber terminals.
    The switch 5 will now be described with reference to FIG.
    The switch 5 comprises a router 8 for relaying the data frames between one or more input ports of the switch 5 and one or more output ports of the switch 5. This router 8 is for example of the Switch Engine type.
    The router 8 comprises an intermediate system 6 connected to the distributed architecture communication system 2 at three input ports 9 of the switch 5 and at three output ports 10 of the switch 5. The router 8 further comprises a system intermediate 7 connected to the centralized architecture communication system at the level of the rest of the input ports 11 of the switch 5 and the rest of the output ports 12 of the switch 5. The input and output ports of the switch 5 are distributed between both communication systems and are used individually only by one of the two communication systems.
    For each communication system, the number of input ports of the switch 5 associated with the communication system in question here is equal to the number of output ports of the switch 5 associated with the said communication system.
    In addition, here all the input and output ports are distributed between the two communication systems, no port of the switch 5 thus remaining unused.
    The switch 5 further comprises a memory zone 13 which is here centralized. The switch 5 is configured so that all data frames received on the switch input ports are stored in the memory area 13 before being retransmitted to the output ports of the switch 5. The switch 5 therefore operates in deferred.
    This ensures the integrity of each received frame.
    Preferably, each intermediate system 6, 7 of the router 8 comprises data frame management means passing through the router 8. For this purpose, the management means comprise, for the intermediate system 6, means for controlling the data frame. occurrence of incoming frames 14 which are arranged between the input ports 9 and the memory area 13 and means for controlling the occurrence of the outgoing frames 15 which are arranged between the memory area 13 and the output ports 10.
    The control means 14, 15 are configured to monitor the occurrence of respectively incoming frames on the input ports 9 of said intermediate system 6 and transmitted by the memory area 13 for transmission on the output ports 10 of said intermediate system 6 The incoming frame control means 14 is configured to monitor all the incoming frames on all the input ports 9 and the outgoing frame control means 15 is configured to monitor all the frames transmitted by the memory area 13 for all the incoming frames 9. output ports 10. Preferably, all the input ports 9 and all the output ports 10 of the intermediate system 6 are thus monitored by the frame occurrence control means.
    In particular, the means for controlling the occurrence of incoming frames 14 are arranged to detect and delete any frame that has already been processed by said control means, that is to say any frame that has already been seen by said means of control. control. This also avoids the propagation of already processed frames. In this way, the overload of the communication network is avoided, in particular it is avoided to overload the memory zone 13 with already processed frames.
    Likewise, the means for controlling the occurrence of the outgoing frames 15 are arranged to detect and delete any frame that has already been processed by said control means, that is to say any frame that has already been seen by said control means. . This avoids the propagation of already processed frames so it avoids the overload of the communication network and in particular to saturate the output ports 10 with old information.
    In the same way, the management means comprise, for the intermediate system 7, means for controlling the occurrence of incoming frames 16 and means for controlling the occurrence of the outgoing frames 17 operating in the same way as those of the system. intermediate 6.
    The switch 5 is thus configured so that all the data frames received correctly (that is to say the correctly formatted frames and also the frames not deleted by the control means of the incoming frames 14 and by the control means of the incoming frames. the occurrence of the incoming frames 16) on the switch input ports are stored in the memory area 13 before being retransmitted to the output ports of the switch 5.
    Moreover, the management means comprise, for the intermediate system 6, means for regulating the transmission of frames 18 on the output ports 10 of the intermediate system 6 which are arranged following the means for controlling the occurrence outgoing frames 15.
    These control means are here configured to work according to a law of regulation of the transmission of frames on the output ports 10 of the first-in, first-out type (better known by the acronym FIFO for First In, First Out).
    The means for regulating the transmission of frames 18 are preferably configurable, the regulation law therefore being also configurable. Preferably, the means for regulating the transmission of frames 18 are parameterizable port by port. The regulation law is for example parameterizable in terms of the maximum number of bytes per frame or the maximum size of a frame, the minimum time that must elapse between two successive transmission orders of frames on the output ports 10 of a number of frames in order of transmission ... For example, the law can thus allow a regulation of the frames on the output ports 10: based on a transmission of a single frame of maximum size in order of transmission or based on a transmission of several frames by transmission order within a limit of a maximum number of frames and / or a maximum number of bytes in order of transmission.
    Said regulation means 18 are configured to regulate only the frames coming from the centralized architecture communication system and intended for the distributed architecture communication system 2. The frames flowing within the distributed architecture communication system 2 are thus not subjected to said regulating means 18,
    In the same way, the management means comprise, for the intermediate system 7, means for regulating the transmission of frames 19 arranged following the means for controlling the occurrence of the outgoing frames 17, regulating means operating from identical to those of the intermediate system 6, with the difference that said control means here manage in a configurable manner and port-operable by port all the output ports 12 linked to said intermediate system 7 (whereas for the intermediate system 6 the regulation means the transmission of frames 18 only manage the frames, and the associated communication logical channels, circulating from the centralized architecture communication system to the distributed architecture communication system).
    The switch 5 is for example a so-called A664 switch (that is to say based on the ARINC 664 standard) whose initial structure has been adapted so that the switch 5 can perform the intermediate system functions for both types of systems. Communication.
    Preferably, the switch 5 is configured so that the format of the frames relating to the data exchanges within the centralized communication system is reproduced for the distributed architecture communication system 2. Thus, the distributed architecture communication system 2 is also compatible with the A664 standard. This ensures a strict continuity of logical channels A664 from one system to another.
    It is noted that the ports of the switch 5 can be connected to the centralized communication system as well as to the distributed communication system 2. An initial setting of assigning the different ports of the switch 5 to one or the other of the communication systems is sufficient to ensure proper routing of the different frames. The ports of the switch 5 can thus all be identical in terms of structure.
    The switch 5 is therefore flexible and reconfigurable.
    A mode of operation of the communication network will now be described with reference to FIGS. 1 and 2. In this mode of operation, data are transmitted from the computing device 1 to the distributed architecture communication system. Of course, this implementation is not limiting and other types of data exchange can be made with this communication network as indicated below. The calculation unit 1 first generates, via one of the particular application-function 3, a set of instructions containing data. The connection unit 4 then translates this monitoring instruction into a format adapted for the switch 5 such as a Simple Network Management Protocol (SNMP) or Trivial File Transfer Protocol (TFTP) format and transmits it to the switch 5.
    The translated setpoint thus reaches the router 8 at one of the input ports 11 of the intermediate system 7 of the centralized architecture communication system.
    The setpoint is first controlled by the control means 1 / occurrence of the incoming frames 16 before being stored on the memory area 13. The setpoint is then transmitted to the control means of 1'occurrence of outgoing frames 17, then the means for regulating the transmission of frames 18, before being transmitted via one or more of the output ports 10 of the intermediate system 6 to the distributed architecture communication system.
    In the same way, the following data exchanges can be carried out within the communication network directly from the same switch 5: from the centralized architecture communication system to the distributed architecture communication system 2, from the architecture communication system distributed 2 to the centralized architecture communication system, from the distributed architecture communication system 2 to the distributed architecture communication system 2, from the centralized architecture communication system to the centralized architecture communication system, from the communication system to the distributed architecture 2 to the distributed architecture communication system 2 and the centralized architecture communication system, from the centralized architecture communication system to the distributed architecture communication system 2 and the architectural communication system e centralized.
    The switch 5 thus has logical channels allowing local transit (data transfer only within the same communication system), a remote transit (data transfer only between two distinct communication systems) and a mixed transit (passage of data between two different communication systems) data both between two different communication systems and within the same system).
    All exchanges between communication systems and intra-communication systems are therefore directly supported by the same switch 5 without modifying the data frames regardless of the path that the frames take (no fragmentation of the frames, no change in the number of frames). header fields ...).
    With reference to FIG. 3, the communication network according to the second embodiment of the invention is identical to the communication network according to the first embodiment, with the difference that the communication network this time comprises two communication systems with distributed architecture 102, 122 in addition to the centralized architecture system.
    The switch 105 thus comprises a first intermediate system 106 for the first distributed architecture communication system 102 and a second intermediate system 126 for the second distributed architecture communication system 122. Of course, the switch 105 also comprises an intermediate system (no shown here) connected to the centralized architecture communication system.
    In this way, in this embodiment, the switch 105 allows exchanges within the centralized architecture communication system, within the first distributed architecture communication system 102, within the second distributed architecture communication system 122 but also: between the centralized architecture communication system and, the first distributed architecture communication system 102 and / or the second distributed architecture communication system 122, between the first distributed architecture communication system 102, and the communication system with a centralized architecture and / or the second distributed architecture communication system 122 between the second distributed architecture communication system 122 and the centralized architecture communication system and / or the first distributed architecture communication system 102.
    In particular, the intermediate system 106 and / or the intermediate system 126 may comprise outgoing frame control means on the corresponding distributed architecture communication system as in the first embodiment. In this case, either the two distributed architecture communication systems share the same settings of their regulation law and then the regulation means are configured to regulate only the frames coming from the centralized architecture communication system and destined for the control system. corresponding distributed architecture communication (the frames circulating within the distributed distributed communication system corresponding or between the two distributed architecture communication systems are then not subject to said control means) or the two distributed architecture communication systems do not share the same parameterizations of their regulation law and then the regulation means are configured to regulate the frames coming from the centralized architecture communication system and intended for the corresponding distributed architecture communication system as well as the frames from the other distributed architecture communication system and intended for the corresponding distributed architecture communication system (only the frames circulating within the corresponding distributed architecture communication system are then not subject to said regulation means).
    With reference to FIG. 4, the communication network according to the third embodiment of the invention is identical to the communication network according to the first embodiment, with the difference that the communication network has two switches 205 and 230 this time. and two distributed architecture communication systems 202, 232.
    The first switch 205 is, as in the first embodiment, connected directly on the one hand to the computing element 201 and on the other hand to the first distributed architecture communication system 202 via the intermediate system 206 of the first switch 205 .
    The second switch 230 is connected directly to the first switch 205 and secondly directly connected to the user terminals (not shown here). The second switch 230 is thus part of the centralized architecture communication system of the first switch 205.
    The second switch 230 is also directly connected to the second distributed architecture communication system 232 via the intermediate system 231 of the second switch 230.
    In addition, each of the switches 205, 230 comprises an intermediate system connected to the centralized architecture communication system at the input ports and output ports of the switch in question.
    The communication network thus comprises a centralized architecture communication system and two distributed architecture communication systems independently connected respectively to one of the switches of the communication network.
    The network makes it possible to ensure exchanges not only within the centralized architecture communication system, within the first distributed architecture communication system 202, within the second distributed architecture communication system 232 but also: communication with a centralized communication architecture and the first distributed architecture communication system 202 and / or the second distributed architecture communication system 232, between the first distributed architecture communication system 202 and the centralized architecture communication system and / or the second distributed architecture communication system 232, between the second distributed architecture communication system 232 and the centralized architecture communication system and / or the first distributed architecture communication system 202,
    With reference to FIG. 5, the communication network according to the fourth embodiment of the invention is identical to the communication network according to the first embodiment, with the difference that the centralized architecture communication network has two switches this time. 305 and 340 working in parallel for redundancy issues.
    Each switch 305, 340 is thus independently connected to the distributed architecture communication system 2 via a dedicated intermediate system 306, 341. In this way, the data frames from the distributed architecture communication system 302 to centralized communication system are systematically transmitted to the two switches 305, 340 and vice versa.
    With reference to FIG. 6, the communication network according to the fifth embodiment of the invention is identical to the communication network according to the first embodiment, with the difference that the switch 405 is configured differently.
    Indeed here, the memory zone is no longer centralized, that is to say common to the different input and output ports of the switch 405, but is distributed, that is to say that the memory area has as much of memory sub-areas as intermediate systems of the 405 switch.
    In this case, the memory zone includes a first memory sub-area 451 associated with the first intermediate system 406 in which are stored the data frames received on the input ports 9 and a second memory sub-area 452 associated with the second system. intermediate 407 in which the data frames received on the input ports 11 are stored. The two memory sub-areas 451, 452 then communicate with each other so that the data frames can be retransmitted to the target output ports of the exchange switch. such that the switch operates in delayed mode. The invention is not limited to what has just been described, but on the contrary encompasses any variant within the scope defined by the claims.
    In particular, the communication network may comprise a different number of computing devices than what has been proposed.
    Similarly, the number of switches and / or the number of distributed architecture communication system may be different from what has been described. There will be as many intermediate system of the switch as distributed architecture communication system.
    Although here the number of ports of the switch associated with the distributed architecture communication system is three, this number may of course be different.
    权利要求:
    Claims (6)
    [1" id="c-fr-0001]
    An aircraft communication network comprising at least: a computing device (1; 101; 201; 301-) a switch (5; 105; 205,230; 305,340; 405) connected to the computing device; of a user connected to the switch so that the computing organ, switch and user terminal form a centrally-architected communication system, at least one distributed architecture communication system (2; 102,122; 202,232; 302) connected to the switch the switch being arranged to serve as an intermediate system for the centralized architecture communication system as well as for the distributed architecture communication system, a portion of its input ports (9; 409) and a portion of its ports wherein the output (10; 410) is dedicated to data exchange with the distributed architecture communication system and a portion of its input ports (11; 411) and a portion of its output ports (1; 2, 412) being dedicated to data exchange with the centralized architecture communication system, the switch having a memory area (13; 413) in which all data frames received on its input ports are stored before being retransmitted to the output ports of the switch, the switch being configured to operate in delayed mode.
    [2" id="c-fr-0002]
    The aircraft communication network according to claim 1, further comprising a second distributed architecture communication system (122), the switch (105) being arranged to serve as an intermediate system for the first distributed architecture communication system. (102), for the second distributed architecture communication system and for the centralized architecture communication system, a portion of the input ports and a portion of the switch output ports being dedicated to a data exchange with the first system distributed architecture, a portion of the input ports and a portion of the switch output ports being dedicated to a data exchange with the second distributed architecture communication system and a portion of the input ports and a portion of the switch output ports being dedicated to a data exchange with the arch system centralized reading.
    [3" id="c-fr-0003]
    An aircraft communication network according to claim 1, comprising a second switch (230) and a second distributed architecture communication system (232), the first switch (205) being arranged to serve as an intermediate system for the first a distributed architecture communication system (202) and the centralized architecture communication system, a portion of the input ports and a portion of the output ports of the first switch being dedicated to data exchange with the first architecture communication system distributed and a part of the input ports and part of the output ports of the first switch being dedicated to a data exchange with the centralized architecture system, the second switch (230) being arranged to serve as an intermediate system for the second distributed architecture communication system (232) and the communication system centralized architecture, a portion of the input ports and a portion of the output ports of the second switch being dedicated to data exchange with the second distributed architecture communication system and a portion of the input ports and a portion of the ports of output of the second switch being dedicated to a data exchange with the centralized architecture system.
    [4" id="c-fr-0004]
    An aircraft communication network according to one of the preceding claims, wherein the switch (5; 105; 205,230; 305,340; 405) comprises means for managing the data frames passing through the switch, the management means comprising: means for controlling the occurrence of the incoming frames (14; 414) which are arranged between the switch input ports related to the distributed architecture communication system and the memory area (13; 413); controlling the occurrence of incoming frames (16; 416) which are arranged between the switch input ports related to the centralized architecture communication system and the memory area (13; 413), occurrence control means outgoing frames (15; 415) which are arranged between the memory area (13; 413) and the output ports related to the distributed architecture communication system; - the outgoing frame occurrence control means (17; 417) which are arranged between the memory zone (13; 413) and the output ports related to the centralized architecture communication system.
    [5" id="c-fr-0005]
    5. An aircraft communication network according to claim 4, wherein the management means comprise: means for regulating the transmission of frames (18; 418) on the output ports of the switch linked to the communication system. distributed architecture, said regulation means being arranged following the means of controlling the occurrence of the outgoing frames (15; 415) related to the distributed architecture communication system; - means for regulating the transmission of frames (19; 4.19) on the output ports of the system-linked switch. communication system with centralized architecture, said regulation means being arranged following the means of controlling the occurrence of outgoing frames (17; 417) related to the centralized architecture communication system.
    [6" id="c-fr-0006]
    6. communication network for aircraft according to one of the preceding claims, wherein the memory zone (13) is centralized within the switch (5).
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    法律状态:
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    2017-09-22| PLSC| Publication of the preliminary search report|Effective date: 20170922 |
    2018-02-20| PLFP| Fee payment|Year of fee payment: 3 |
    2020-02-20| PLFP| Fee payment|Year of fee payment: 5 |
    2021-02-19| PLFP| Fee payment|Year of fee payment: 6 |
    2022-02-18| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1652385A|FR3049141B1|2016-03-21|2016-03-21|COMMUNICATION NETWORK|FR1652385A| FR3049141B1|2016-03-21|2016-03-21|COMMUNICATION NETWORK|
    US16/086,528| US20190109727A1|2016-03-21|2017-02-15|Communication network|
    CN201780018933.5A| CN110214435B|2016-03-21|2017-02-15|Communication network|
    PCT/EP2017/053402| WO2017162374A1|2016-03-21|2017-02-15|Communication network|
    EP17705849.2A| EP3433980B1|2016-03-21|2017-02-15|Communication network|
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