• 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:
    This infrastructure includes a network (100, 200) MPLS; first and second groups of access points associated with each section of the channel, each group forming a LAN connected to the network; first and second modems (22,42) aboard the train (16) for communication with access points (20,40) of the first and second groups. The network includes pairs of local switches (122, 132), each pair being associated with a section of the channel and having a first, respectively a second, local switch for communication with the first, respectively second, point group of access of the associated section, and first and second central switches (112, 114), the switches being in series with each other and implementing a path definition service between each central switch and each local switch for the path between the first central switch and the first local switch of a pair of switches and the path between the second central switch and the second local switch of that pair correspond to separate portions of the ring formed by the network.
    公开号:FR3025480A1
    申请号:FR1458281
    申请日:2014-09-04
    公开日:2016-03-11
    发明作者:Anne-Cecile Giroud；Henri Madranges
    申请人:Alstom Transport Technologies SAS；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The present invention relates to a radiocommunication infrastructure for a CBTC type railway signaling system, enabling communication between a ground computer and an on-board computer on a moving train. on one channel, the radio communication infrastructure redundant communication between the ground computer and the onboard computer, establishing a first communication along a first path and a second communication along a second path, infrastructure comprising: a communication network; a first plurality of access points and a second plurality of access points disposed along the path and connected to the communication network; a first modem, dedicated to the establishment of a first wireless link with the first access points, and a second modem, dedicated to the establishment of a second wireless link with the second access points; first and second modems being aboard the train. A railway signaling system of the CBTC type (according to the acronym "Communication Based Train Control") is based on continuous communication between on-board computers on trains on the rail network and ground-based computers to control the traffic. The signaling system comprises, for example, on the ground, an ATS system (according to the acronym "Automatic Train Supervision" for "automatic train supervision" in French) for the location and supervision of trains on the network, an ATC system (according to the acronym "Automatic Train Control", for "automatic train control" in French) train management and generation of movement authorizations, a movement authorization being transmitted to a train to allow it to advance on a next section of the network. The computers on board the trains communicate with the computers on the ground, via a radiocommunication infrastructure, preferably of the Wi-Fi type. The latter comprises a plurality of access points distributed along the tracks. rail network, to ensure continuous coverage along the tracks. The infrastructure includes a plurality of local area networks federating a group of access points located close to each other, and a communication network ("backbone") in which each local network of the plurality of local area networks is connected. Physically, such a communication network is deployed along the path.
    [0002] 3025480 2 The communication network must respond to strong functional constraints. In particular, it must be reliable and fault-tolerant, irrespective of the failure and the location of this failure along the track, so as to ensure continuous communication between the ground and the edge. By "continuous" is meant that any interruption of edge / ground communication must be less than 200 ms. To respond to this type of functional constraints, it is conventionally implemented a physical redundancy. It is thus known to implement two radiocommunication infrastructures in parallel with each other, and to equip each train so that it comprises a first transmitting / receiving means (first modem), generally placed at the head end, able to establish a temporary link with the access points of the first infrastructure, and a second transmission / reception means (second modem), generally placed at the tail end of the train to establish a temporary link with the access points of the second infrastructure. Frame duplicators, on board the trains, between the first and second modems and the onboard computer and, on the ground, between the first and second infrastructures and the ground computers, allowing the transmission of a data frame from the ground to the edge or edge to the ground, via the first infrastructure and via the second infrastructure, simultaneously. The first and second communication paths followed by a data frame are generally referred to as "red" and "blue" by those skilled in the art. By such an architecture, it is guaranteed that in case of failure of the communication network of an infrastructure, the edge / ground communication can still be done via the communication network of the other infrastructure. More generally, even if one communication path degrades the transmission of one data frame, the other path will allow edge / ground communication in a nominal manner. The probability of a failure affecting both communication paths at the same time is low. This structure of the physical layer makes it possible to guarantee the continuity of the communication. Presently, the communication networks deployed are of the SDH type (according to the acronym "Synchronous Digital Hierarchy" in French) according to the standardization in force in Europe, which is equivalent to the standardization SONET ("Synchronous"). Optical NETwork) in force in the United States. Communication networks of the SDH type offer different services. An SDH network is deterministic, making it possible to precisely define resilience and latency times, as well as a bandwidth.
    [0003] 3025480 3 An SDH network implements, in particular, an MS-SP protocol offering an automatic fault detection and restarting service to guarantee a short resilience time between the detection of a fault and the return to the normal state. network. This protocol is based on the data supervision introduced in the header part of the SDH frames. In the event of a breakdown, the resilience time is short, making these communication networks particularly well suited for railway signaling applications. In addition, the bandwidth and latency of these networks are also guaranteed by the implementation of a Time Division Multiplexing ("Time Division Multiplexing") mechanism. They also offer a service to configure virtual channels and dedicate each channel to a particular application, so as to ensure a fixed bandwidth allocation to each application, especially the signaling application. However, the procedures for extending an SDH type network are cumbersome. It is for example necessary, in case of extension of the communication network, to reconfigure the entire network. This then requires to test again and fully the network once extended. In addition, it is not possible to prepare the configuration offline, without having the entire WAN. The commissioning of the WAN therefore takes a significant amount of time during which the rail network can not be operated. It is also necessary to deploy an architecture whose complexity increases with the size of the network. It therefore needs to modernize existing networks while maintaining the physical architecture with two redundant communication paths.
    [0004] The subject of the invention is therefore an infrastructure, characterized in that the communication network is of the MPLS type, preferably of the IP-MPLS type, and has a ring topology, the communication network comprising a plurality of pairs of switches. local, each pair of switches being associated with a section of the channel and having a first local switch dedicated to communication with the first group of access points associated with said section and a second local switch dedicated to the communication with the second groups of access points associated with said section; and first and second central switches, the switches being serially connected to each other, the ground computer being connected to the central switch, and each switch implementing a path definition service, a fault detection service, and a reconfiguration service, the path definition service for predefining communication paths between two switches of each switch doublet consisting of a central switch and a local switch, so that the path between the first and second central switch and the first local switch of a pair of switches and the path between the second central switch and the second local switch of said pair of switches 5 are performed along separate portions of the ring formed by the network. According to particular embodiments, the infrastructure comprises one or more of the following characteristics, taken separately or in any technically possible combination: said infrastructure comprises a plurality of sectors, each sector comprising a communication network aggregating local area networks. a plurality of sections; the or each central switch of each communication network constitutes a node of a MPLS type hat communication network, also having a ring topology; The first and second central switches of a communication network are integrated into an integrated electrical switch; the first local switches and the second local switches of a communication network are placed alternately within said network; said infrastructure comprises an administration interface; Said infrastructure implements a priority / segregation service for communication of signaling application and data data of other types of applications on the or each communication network; each switch implements an SDP path configuration service for configuring tunnel links between two switches of the same network of the infrastructure; the value "Spoke SDP" is allocated to each link between a local switch and a central switch of an aggregation network and the value "Mesh SDP" is assigned to each tunnel link on the hat network between a central switch of a sector and a central switch from another sector.
    [0005] The invention and its advantages will be better understood on reading the following detailed description of a particular embodiment, given solely by way of non-limiting example, the description being made with reference to the appended drawings in which: Fig. 1 is a schematic representation of an infrastructure according to the invention; and, FIG. 2 is a schematic representation of a switch of the infrastructure of FIG. 1, implementing a plurality of services. The infrastructure according to the invention implements a communication network of the MPLS type, in particular of the IP-MPLS type. IP-MPLS networks are known.
    [0006] However, an IP-MPLS network is not deterministic unlike an SDH network. With an IP-MPLS network it is not possible in principle to guarantee a resilience time after the occurrence of a failure. It is therefore not easy to implement an IP-MPLS network for a railway signaling application, which requires guaranteeing the bandwidth, the latency time and the resilience time to respect the communication continuity constraint. edge / ground. The use of an IP-MPLS network is only possible in a signaling application if the physical and logical layers of the IP-MPLS network implemented are very specifically configured.
    [0007] FIG. 1 shows schematically a radiocommunication infrastructure 10 for a CBTC type railway signaling system. In FIG. 1, a railway network is schematically represented by a channel, generally referenced by the numeral 2.
    [0008] Channel 2 is subdivided into a plurality of successive sections 4, 5, 6 and 7. The infrastructure 10 allows communication between ground computers 12 and 13, and an on-board computer, such as the onboard computer 14 on board. train 16 running on the track 2. The ground computers 12 and 13 execute for example an ATC signaling application ("Automatic Train Control"). The infrastructure 10 provides a redundancy of the communication between the ground computers 12 and 13 and the on-board computer 14, by establishing a first communication along a first path and, in parallel, a second communication along a second path. path.
    [0009] The adjective "blue" will subsequently be used to qualify the components of the infrastructure 10 constituting the first communication path, and the adjective "red", to qualify the components of the infrastructure 10 constituting the second path of communication in accordance with the usage in this technical field. The infrastructure 10 has a plurality of blue access points 20 and a plurality of red access points 40.
    [0010] 3025480 6 An access point allows the establishment of a wireless link with a transmitting / receiving module, or modem, adapted. Preferably, this wireless link complies with the Wi-Fi protocol. Since the range of a Wi-Fi access point is short, the access points are placed in close proximity to the channel 2.
    [0011] The plurality of blue access points 20 are subdivided into groups of blue access points 24, 25, 26 and 27, each group being associated with a sector of the channel 2. The blue access points of the same group can be used to define a continuous radio coverage along the corresponding sector. The covers of two groups of blue access points, associated with neighboring sectors, partially overlap to ensure continuity of communication along the blue path when the train 16 crosses the boundary between two sectors. The blue access points 20 of the same group are connected to a blue Local Area Network (LAN). A similar description could be made for the plurality of red access points 30, which is subdivided into groups of red access points 44, 45, 46 and 47, each group being associated with a sector of the channel 2. The Red access points 40 of the same group are connected to a red local communication network of the LAN type. The infrastructure 10 comprises, on board each train 16, traveling on the track 2, a blue modem 22 or red modem 42.
    [0012] The blue modem 22 is dedicated to establishing a first Wi-Fi wireless link with the blue access points 20, while the red modem 42 is dedicated to establishing a second Wi-Fi wireless link. -Fi with the red access points 40. The onboard computer 14 comprises a frame duplicator 15 whose function is to duplicate the frames transmitted by the onboard computer 14 to a ground computer, 12 or 13, for transmission on the infrastructure 10 a blue frame on a blue path and a red frame on a red path. On the ground, the infrastructure 10 has a lower hierarchical level comprising first and second communication networks 100 and 200, and a higher hierarchical level comprising a third communication network 300, or hat network. The first and second communication networks 100 and 200 are identical to each other. The first network 100 allows the aggregation of the blue and red local area networks of sections 4 and 5, so as to define a first sector 101 in the infrastructure 10, while the second network 200 allows the aggregation of the blue and local area networks. red sections 6 and 7, so as to define a second sector 201 in the infrastructure 10.
    [0013] The first network 100 is of the IP-MPLS type. The first network 100 consists of nodes and links between nodes. The first network 10 has a specific topology forming a single ring closed on itself. Thus, each node of the network is serially connected to two neighboring nodes. A node of the network 100 consists of an MPLS switch. A switch ("switch" in English) is a network equipment operating on the second layer - link - of the Open Systems Interconnection (OSI) model as opposed to a router which is a device operating on the third layer - network - 10 this model. A switch is connected to a neighbor switch by two unidirectional optical links. For communication between a switch and a neighbor switch, one of the optical links operates in transmission for the respective switch and the other in reception for the switch in question.
    [0014] The first network 100 includes a pair of central switches 110 and two pairs of local switches 120 and 130. A network has as many pairs of local switches as it aggregates sections of the channel 2. The pair of central switches 110 comprises a blue central switch 112 and a red central switch 114.
    [0015] A pair of local switches 120, 130, respectively, includes a blue local switch 122, respectively 132, and a red local switch 124, respectively 134. The switch pairs are connected one after the other so that the The blue switches and the red switches are alternately placed one after the other within the first network 100. The blue local switch 122 of the first pair 120 is connected to the blue LAN of section 4. The red local switch 124 of the first pair 120 is connected to the red local area network of section 4. It should be noted that each local switch has a pair of ports 30 allowing it to be connected to the communication network of the lower hierarchy and a local port it allowing to be connected to the local network. The blue local switch 132 of the second pair 130 is connected to the blue local area network of section 5. The red local switch 134 of the second pair 130 is connected to the red local area network of section 5.
    [0016] A similar description could be made of the second network 200 which successively comprises a blue central switch 212, a red central switch 214, a blue local switch 222, connected to the blue LAN of section 6, a red local switch 224, connected to the red local area network of section 6, a blue local switch 232, connected to the blue local area network of section 7, and a red local switch 234, connected to the blue local area network of section 7.
    [0017] Cap network 300 is of the IP-MPLS type. It also presents a topology forming a ring, the switches being placed in series and interconnected so as to form a closed loop. Hat network 300 has as many pairs of central switches that it aggregates communication network of the lower hierarchical level. The hat network 300 makes it possible to connect the communication networks of each sector of the infrastructure 10 to each other. It should be noted that each central switch has a lower pair of communication ports enabling it to be connected to the communication network. the lower hierarchy and a pair of upper communication ports allowing it to be connected to the network hat of the upper hierarchy. In the embodiment described here, each ground computer is directly connected to a single pair of central switches. Thus, the computer 12 is connected to the pair of central switches 112 and 114, while the computer 13 is connected to the central switch pair 212 and 214. In this architecture, a ground computer is therefore dedicated to the management of the central switch. a particular sector. A frame duplicator is built into each computer on the ground. The duplicator 310 of the computer 12 enables the duplication of the frames transmitted by the ground computer 12 to the on-board computer 14, so that a blue frame on the blue path and a red frame on the path are transmitted on the infrastructure 10. red. The duplicator 311 of the computer 13 allows the duplication of the frames transmitted by the computer on the ground 13 to the onboard computer 14, so that are transmitted on the infrastructure 10 a blue frame on the blue path and a red frame on the red path.
    [0018] Advantageously, each communication network, 100, 200, 300, comprises an administration interface, not shown in FIG. 1, enabling an operator to configure the logical layer of each network by setting up the services implemented by the switches. of this network. It should be noted that the ring formed by each communication network is common to the blue path and the red path.
    [0019] In one variant, the pair of central switches of a communication network are integrated in the same network equipment of the MPLS electrical switch type, which is an intrinsically redundant device. In yet another variant, independent of the previous one, a modem, for example the blue modem of a train, is adapted to use the red path to communicate blue frames, for example in case of failure of the blue access point. . The red switch of the central switch pair of a communication network of the lower hierarchical level is then able to detect the blue fields circulating on red path and retransmit the blue fields detected on the blue path of the communication network of the hierarchical level. superior. Since the physical layer has been described, the logical layer will now be presented in detail. FIG. 2 schematically shows a generic switch (local or central) of an MPLS network of the infrastructure 10 and the various services it performs. The MPLS protocol comprises, basically, a plurality of services, capable of being executed by each MPLS switch. In accordance with the MPLS protocol, each switch notably implements a service 1000 for defining the paths through the MPLS network, called LSP (Label Switched Paths) 20. This service makes it possible to define the path that a frame must follow to be transferred, via the MPLS communication network, between a source switch and a destination switch. In accordance with the MPLS protocol, each switch also implements a failure detection service 1100.
    [0020] In accordance with the MPLS protocol, each switch implements an automatic reconfiguration service 1200 for solving simple faults. However, in practice, these last two protocol services require about 300 ms to detect a failure and perform the necessary reconfiguration (even if the actual reconfiguration is specified as taking only 50 ms). Such a resilience time is not compatible with a signaling application, which requires that an interrupt not last more than 200 ms. To meet this constraint, during a configuration phase of the infrastructure 10, a single LSP path is defined for each possible pair of switches within the same network, and this for each network 100, 200, 300. constituent of the infrastructure.
    [0021] In addition, the blue LSP path defined between a first blue switch and a second blue switch is complementary to the red LSP path defined between the first red switch associated with the first blue switch and the second red switch associated with the second blue switch. In this way the blue and red frames of the same communication do not pass through any link or common switch. For example, for a communication between the ground computer and an on-board computer located in section 5, a blue path B is defined statically between the blue central MPLS node 112 and the local blue MPLS node 132, as well as a red path 10 R between the red central MPLS node 114 and the red local MPLS node 134. The blue path B will be in a counterclockwise direction and the red path will be in a clockwise direction R, so that the blue and red fields of a same communication does not pass through any link or common switch. When a fault is detected on the link between the switches 122 and 124 (shown schematically by a cross on the corresponding segment in FIG. 1), prohibiting the communication of blue frames along the blue LSP path B, the services 1100 and 1200 Failure detection and automatic reconfiguration of the switches forces the routing of the blue frame between the blue central switch 112 and the blue local switch 132 along the blue path B *, which passes through the intermediate switch 134. the frame along the blue path B * being clockwise in the ring constituted by the network 100. This introduces an interruption on the blue communication of maximum 300 ms. However, at the same time, since the red LSP path R is not degraded by the fault, no communication interruption will be observed on this red path, so that there will be continuity of communication between the on-board computer and the ground computer. . In accordance with the MPLS protocol, each switch also implements a service 1400 for defining SDP paths (in the acronym "Service Distribution Point"). In general, data to be routed in an MPLS network between a source node and a destination node is encapsulated in a specific datagram whose frame is adapted to be routed through the MPLS network between the source node and the node. recipient. Such specific encapsulation transmission between a source node and a destination node is also referred to as a tunnel link between the source node and the destination node.
    [0022] In the infrastructure 10, the SDP path definition service 1400 makes it possible to define the properties of the tunnel link between a source switch and a destination switch, and this for each possible pair of switches within the same network. infrastructure. Advantageously, the SDP paths of a network, 100, 200 or 300, constitute a subset of the LSP paths defined on this network. SDP paths are thus configured to limit the use of resources on an MPLS node. For example, for a network, a tunnel link is provided between the central switch and each local switch of a given color, but no tunnel link is created directly between two local switches of a given color. In general, an SDP path has an attribute that can take either the value "Spoke SDP" or the value "Mesh SDP". A frame traveling on a SDP path "Spoke SDP" can pass to another SDP path, regardless of the value of its attribute. On the other hand, a frame running on an SDP path "Mesh SDP" can only pass to an SDP path "Spoke SDP". In the infrastructure 10, an SDP path between a local switch and a central switch is configured to take the value "Spoke SDP" so as to allow point-to-point communication between two sections of the same sector, for example 4 and 5 through the network 100. An SDP path between two central switches of different sectors is configured to take the value "SDP Mesh", so as to allow multipoint communication between two sections of different sectors, for example 5 and 6 across the networks 100, 300 and 200. In this way, when the train 16 physically crosses the boundary between two adjacent sections, these two neighboring sections belong to the same sector or two different sectors, communication between these neighboring sections can be established , Allowing a continuity of the communication ground edge when crossing the border. It should be noted that if all SDP paths were configured with an attribute having a value "Spoke SDP", there would be a risk of creating loops on the infrastructure 10. Or a loop on an Ethernet network means an amplification of the traffic broadcast and network saturation ("broadcast storm"). On the other hand, if all SDP paths were configured with an attribute with a "SDP Mesh" value, the ability to communicate between two stations in different sectors would be prohibited. In addition, the bandwidth and latency of the infrastructure 10 are guaranteed by the MPLS quality of service (QoS) characteristics.
    [0023] The subdivision into sectors of the physical layer of the infrastructure 10 makes it possible, when a network associated with a sector fails (serious breakdown), not to affect the functioning of the other sectors of the infrastructure. Equally, the increase of the infrastructure during an extension of the track and the addition of new sectors is easily done.
    [0024] An MPLS network has many advantages. The implementation of an MPLS network makes it possible to obtain higher data transfer rates (up to 10 Gbps of bandwidth) than that of an SDH network, with the same quality of service. The implementation of an MPLS network makes it possible to achieve more flexible topologies, notably allowing extensions of the infrastructure without having to reconfigure the entire network, but only the new networks associated with the new sections of track when an extension of the rail network, or the only local blue and red connectors for the aggregation of a new local network by an existing network. In particular, it is possible to prepare an offline configuration and to configure or modify the configuration of an existing network quickly, thereby minimizing the downtime of rail network operation. The implementation of a ring MPLS network aggregating local area networks by channel sector makes it possible to reduce the length of the cables (in this case optical fibers) used to connect the network equipment to each other, with the key being one. reduced costs of deploying infrastructure. Advantageously, an IP-MPLS network makes it possible to implement a data priority / segregation service, allowing the use of the network for the communication of data other than signaling data. This is for example multi-media application data allowing the display of information in the station or the broadcast of sound messages adapted by a computer connected to the local network associated with a section of the channel. The implementation of the segregation service ensures that the communication of the signaling application data, having a high priority attribute, is not affected by the data communication of other applications, having an attribute of low priority, especially when overflowing non-priority data. The implementation of an MPLS network allows a certain flexibility in the allocation of the bandwidth between different applications. This makes it possible to guarantee a bandwidth for each application and, in the event of bandwidth availability, to dynamically allocate an increase in the bandwidth to an application up to a predefined maximum for this application.
    [0025] This possibility of circulating heterogeneous frames on the same network enables a railway network operator to avoid having to deploy an independent communication network dedicated to these additional applications. Those skilled in the art will understand that for the sake of clarity the embodiment shown in FIG. 1 is particularly simple. Numerous variations are possible in terms of the number of sections, the number of sectors, in order to aggregate the sections within sectors, the number of ground computers managing one or more sectors, etc.
    权利要求:
    Claims (6)
    [0001]
    CLAIMS1.- Radiocommunication infrastructure (10) for a railway signaling system of the "communication-based train management" type - CBTC, allowing communication between a ground computer (12) and an on-board computer (14) on board. a train (16) traveling on a track (2), the track (2) being subdivided into sections (4, 5, 6, 7), the radio communication infrastructure providing a redundancy of the communication between the ground computer and the on-board computer, establishing a first communication along a first path and a second communication along a second path, the infrastructure comprising: - a communication network (100, 200); a first plurality of access points (20) and a second plurality of access points (40), the access points being arranged along the path, the first and second pluralities of access points being respectively subdivided in first and second groups of access points, each group of access points forming a local communication network, a first group of access points and a second group of access points being associated with each section of the pathway and being connected to the communication network (100, 200); a first modem (22) dedicated to establishing a first wireless link with access points of the first plurality of access points, and a second modem (42) dedicated to the establishment of a second wireless link with access points of the second plurality of access points, the first and second modems being embedded on board the train (16); characterized in that the communication network (100, 200) is of the MPLS type, preferably of the IP-MPLS type, and has a ring topology, the communication network (100, 200) having a plurality of local switch pairs (122, 132), each pair of local switches being associated with a section of the channel and having a first local switch dedicated to communication with the first group of access points (20) associated with said section and a second local switch dedicated to communication with the second groups of access points (40) associated with said section; and first and second central switches (112, 114), the central and local switches being serially connected to each other, the ground computer being connected to the pair of central switches, and in that each switch implements a a path definition service (1000, 1400) (1100), a fault detection service (1100), and a reconfiguration service (1200), the path definition service for predefining communication paths between two switches of each switch doublet consisting of a central switch (112) and a local switch (122, 132), so that the path between the first central switch and the first local switch of a pair of local switches and the path between the second central switch and the second local switch of said pair of local switches takes place along separate portions of the ring formed by the network.
    [0002]
    2. Infrastructure according to claim 1, comprising a plurality of sectors (101, 201), each sector comprising a communication network (100, 200) aggregating the local networks of a plurality of sections.
    [0003]
    3. Communication infrastructure according to claim 2, in which the or each central switch (110, 210) of each communication network (100, 200) constitutes a node of a MPLS-type hat communication network (300). 15 also having a ring topology.
    [0004]
    4. Communication infrastructure according to any one of the preceding claims, wherein the first and second central switches (112, 212, 114, 214) of a communication network are integrated in an integrated electrical switch 20.
    [0005]
    Communication infrastructure according to any of the preceding claims, wherein the first local switches and the second local switches of a communication network are alternately placed within said network.
    [0006]
    6. Communication infrastructure according to any one of the preceding claims, comprising an administration interface. 7. The communication infrastructure according to any one of the preceding claims, implementing a priority / segregation service enabling the communication on the or each communication network of signaling application data and other data of others. types of applications. 8. Communication infrastructure according to any one of the preceding claims, wherein each switch implements an SDP path configuration service (1400) for configuring tunnel links between two switches of a same network of links. infrastructure. The communication infrastructure of claim 8, wherein the value "Spoke SDP" is allocated to each link between a local switch and a central switch of an aggregation network and the value "Mesh SDP" is assigned to each tunnel link on the network hat between a central switch of a sector and a central switch of another sector.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2000052851A1|1999-02-26|2000-09-08|Springboard Wireless Networks Inc.|Communication system for mobile networks|
    EP1995916A1|2007-05-24|2008-11-26|Siemens Schweiz AG|Device for controlling and/or monitoring and data retrieval from local functional units along a communication network|
    CN101568019A|2009-05-26|2009-10-28|上海大学|Double-network redundant rail transit field video transmission system|
    DE102010027131A1|2010-07-14|2012-01-19|Siemens Aktiengesellschaft|System and method for bidirectional communication with a rail vehicle|
    US5420883A|1993-05-17|1995-05-30|Hughes Aircraft Company|Train location and control using spread spectrum radio communications|
    CN1868169A|2003-10-09|2006-11-22|松下电器产业株式会社|Radio transmission system for high-speed mobile unit|
    JP4354326B2|2004-03-31|2009-10-28|パイオニア株式会社|Information distribution system|
    JP4302578B2|2004-06-01|2009-07-29|富士通株式会社|Mobile communication system|
    CN100536456C|2007-01-29|2009-09-02|北京交通大学|Communication-based interconnected and intercommunicated I-CBIT train operation control system|
    CN101222327A|2007-09-13|2008-07-16|上海大学|Safety elliptic curve cipher protection method of train travelling control system|
    US20090184211A1|2008-01-17|2009-07-23|Lockheed Martin Corporation|Method to Monitor a Plurality of Control Centers for Operational Control and Backup Purposes|
    IT1390946B1|2008-08-13|2011-10-27|Thales Security Solutions & Services S P A|BROADBAND COMMUNICATION SYSTEM BETWEEN ONE OR MORE CONTROL CENTERS AND ONE OR MORE MOBILE UNITS|
    CN102753420B|2010-02-19|2015-08-26|三菱电机株式会社|Changing method in train control system and train control system|
    US20110230197A1|2010-03-22|2011-09-22|Shiquan Wu|System and apparatus for high speed train communication|
    US20120147864A1|2010-12-09|2012-06-14|Jianlin Guo|Synchronous Data Transmission in Hybrid Communication Networks for Transportation Safety Systems|
    KR20120071757A|2010-12-23|2012-07-03|한국전자통신연구원|Apparatus and system of providing wireless local area network service for means of transport|
    US9949309B2|2011-02-19|2018-04-17|Nomad Spectrum Limited|Methods, computer readable mediums, and apparatuses for providing communication to a mobile device using virtual connections|
    EP2549620A3|2011-07-22|2013-04-24|Siemens Schweiz AG|Device for operating decentralised functional units in an industrial assembly|
    GB2495145A|2011-09-30|2013-04-03|Nec Corp|Relay services used in LTE advanced systems|
    US8737225B2|2012-02-17|2014-05-27|City University Of Hong Kong|Mobile internet service system for long distance trains|
    GB2508354B|2012-11-28|2018-09-05|Nomad Spectrum Ltd|Communication method|
    GB2508355B|2012-11-28|2021-02-17|Nomad Digital Ltd|Communication method|
    US9648531B2|2013-01-20|2017-05-09|Eci Telecom Ltd.|Communication services to a moving platform|
    JP6104615B2|2013-01-23|2017-03-29|株式会社東芝|Failure detection apparatus and method|
    GB2522603A|2013-10-24|2015-08-05|Vodafone Ip Licensing Ltd|High speed communication for vehicles|
    GB2519561A|2013-10-24|2015-04-29|Vodafone Ip Licensing Ltd|Increasing cellular communication data throughput|
    EP2871805B1|2013-11-11|2019-01-23|Airbus Operations GmbH|Data network, aircraft or spacecraft, and method|
    US10367684B2|2014-05-19|2019-07-30|Nec Corporation|Fault detection method and mobile wireless system|CN109153395B|2016-05-12|2021-03-09|株式会社京三制作所|Train control system|
    CN106506310B|2016-11-29|2019-11-15|中车株洲电力机车研究所有限公司|A kind of rail vehicle network message transmission route determines method and device|
    CN109305200B|2017-07-28|2020-10-23|比亚迪股份有限公司|Train sequencing and train movement authorization calculation method, device and equipment|
    CN109318944B|2017-07-31|2020-11-06|比亚迪股份有限公司|Train control method, device and system|
    CN108134779B|2017-12-06|2020-09-18|交控科技股份有限公司|CBTC communication system protocol analysis method and protocol library management method|
    CN108189869B|2017-12-22|2020-02-14|交控科技股份有限公司|Common pipe region setting and switching method in common pipe region of CTCS-2 and CBTC|
    CN110011837A|2019-03-19|2019-07-12|中国铁道科学研究院集团有限公司通信信号研究所|One kind being based on CBTC grid data intelligent failure analysis methods|
    CN110769451B|2019-09-11|2020-09-01|中铁电气化局集团有限公司|Rail transit communication system, rail transit communication method, computer device, and storage medium|
    CN110830596A|2020-01-10|2020-02-21|浙江众合科技股份有限公司|Heterogeneous cloud-based multiple failure safety train control platform implementation method|
    US11239874B2|2020-01-30|2022-02-01|Deeyook Location Technologies Ltd.|System, apparatus, and method for providing wireless communication and a location tag|
    RU2757164C1|2020-10-26|2021-10-11|Владимир Евгеньевич Ефремов|Devices and methods for determining the location of rail transport and ensuring traffic safety using a wireless chain network|
    US11063639B1|2020-11-05|2021-07-13|Bluwireless Technology Limited|Wireless communication for vehicle based node|
    法律状态:
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    2016-03-11| PLSC| Publication of the preliminary search report|Effective date: 20160311 |
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    优先权:
    申请号 | 申请日 | 专利标题
    FR1458281A|FR3025480B1|2014-09-04|2014-09-04|RADIOCOMMUNICATION INFRASTRUCTURE FOR A CBTC TYPE RAILWAY SIGNALING SYSTEM|FR1458281A| FR3025480B1|2014-09-04|2014-09-04|RADIOCOMMUNICATION INFRASTRUCTURE FOR A CBTC TYPE RAILWAY SIGNALING SYSTEM|
    EP15756925.2A| EP3194244A1|2014-09-04|2015-09-01|Radiocommunication infrastructure for a railway signalling system of the cbtc type|
    US15/508,628| US10091024B2|2014-09-04|2015-09-01|Radiocommunication infrastructure for a railway signalling system of the CBTC type|
    PCT/EP2015/069957| WO2016034587A1|2014-09-04|2015-09-01|Radiocommunication infrastructure for a railway signalling system of the cbtc type|
    KR1020177009070A| KR20170053666A|2014-09-04|2015-09-01|Radiocommunication infrastructure for a railway signaling system of the cbtc type|
    BR112017004259A| BR112017004259A2|2014-09-04|2015-09-01|radio communication infrastructure for a railway signaling system|
    CN201580047821.3A| CN106687354B|2014-09-04|2015-09-01|Radio communication infrastructure for CBTC type railway signal transmission system|
    CA2959953A| CA2959953A1|2014-09-04|2015-09-01|Radiocommunication infrastructure for a railway signalling system of the cbtc type|
    SG11201701671VA| SG11201701671VA|2014-09-04|2015-09-01|Radiocommunication infrastructure for a railway signalling system of the cbtc type|
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