FR3021476A1 - INFRASTRUCTURE OF A TELECOMMUNICATION NETWORK AND INTERFACE DEVICE OF SUCH INFRASTRUCTURE - Google Patents

Abstract

The invention relates to an infrastructure of a telecommunications network comprising a wired central data transmission network arranged in a public space road, at least one local data transmission equipment arranged in the vicinity of said road, and a device (24) interface between the core network and the local equipment. The infrastructure is characterized in that said interface device (24) comprises a connection chamber (26) formed in the roadway and connected to the wired core network, and at least one wireless connection means (30) arranged in said connection chamber (26) is adapted to transmit data between the wired core network and the local equipment.

Description

BACKGROUND OF THE INVENTION 1. TECHNICAL FIELD OF THE INVENTION The invention relates to an infrastructure of a telecommunication network. In particular, the invention relates to an infrastructure of a telecommunication network between a central network and one or more local equipment. 2. Technological background Large-scale network infrastructures comprise in known manner a central network (also called an urban loop), one or more local equipment dispersed over a medium-sized geographical area, for example a city, a district or a district. village and one or more interface devices to connect the core network and local equipment. These local devices are either user terminals or gateways to smaller local area networks.

The central network is for example a network managed by an Internet access provider, the local equipment allowing subscribers to connect to the Internet from their local network via the central network. The different central networks are linked at the country level to one or more larger networks, called dorsal (or backbone) networks.

At the level of the infrastructure, this central network generally consists of a set of optical fibers deployed in the public space, preferably buried under the road. Local facilities are usually located inside buildings (houses, buildings, etc.) near this road. Local equipment must therefore be connected to these optical fibers to connect the different equipment or local networks between them. The link between these local equipment and the central network is commonly called local loop and includes at least one interface device between the central network and the local equipment. Currently, the connection of one of these local equipments to the central network, commonly called connection, is made by means of an interface device which allows the connection between the central network of optical fibers and copper or fiber cables. optical devices that route data to the equipment on the central network. If the optical fiber is buried under the road network, the connection requires road works in order to bury the copper or fiber optic cables, to protect the interface devices and to connect them via the interface device. central network and local amenities. These works generate a multitude of problems: they are expensive (on average ten times the price of the installation of a central network per unit of length), they create an inconvenience in the public space (clutter, noise, vibrations , security etc.), they monopolize the public space for a long time, they present risks of degradation of the existing buried networks (water pipes, electrical network, etc.) and they generally require a prior administrative authorization. There is therefore a need to find a solution to overcome the disadvantages associated in particular with the work necessary to interconnect a central network and one or more local equipment. 3. Objectives of the invention The invention aims to overcome at least some of the disadvantages of known network infrastructures. In particular, the invention also aims to provide, in at least one embodiment of the invention, a network infrastructure for connecting a local equipment does not require heavy work in the road or in buildings where find local amenities. The invention also aims to provide, in at least one embodiment, a network infrastructure to reduce costs and the connection time of local equipment. 4. DISCLOSURE OF THE INVENTION To this end, the invention relates to an infrastructure of a telecommunication network comprising a wired central data transmission network arranged in a public space road, at least one local equipment for transmitting data. data arranged in the vicinity of said road, and an interface device between the central network and at least one local equipment, characterized in that said interface device comprises: a connection chamber formed in said road and connected to said wired central network at least one wireless connection means arranged in said connection chamber and adapted to transmit data between said wired central network and at least one local equipment. An infrastructure according to the invention therefore has an original solution for connecting a central network, also called urban loop, to at least one local equipment. Such an infrastructure makes it possible to connect the wired central network and at least one local device by means of an interface device provided with a wireless connection means, which eliminates the need to carry out work on the road network. to ensure the connection between the central network and local equipment. The interface device comprises a connection chamber which can be advantageously arranged in the roadway at the same time as the installation of the central network. The connections allowing the connection of local equipment to the central network are thus made wirelessly by a wireless connection means arranged in a connection chamber formed in the roadway, without requiring additional work impeding the movement of pedestrians or vehicles on the road. roads. The risks of safety or deterioration of the roads are therefore excluded. An infrastructure according to the invention requires only one intervention to spare the wireless connection chamber in the road. Subsequently, no further intervention is required to connect new equipment to the core network. The connection is simpler, but also faster and less expensive. In addition, it reduces the underground congestion of the road network by avoiding the wiring between the central network and the local equipment.

An infrastructure according to the invention is particularly suitable for new cities or areas not yet equipped with a telecommunications infrastructure. Such an infrastructure is easy to install and allows, once installed, an addition of equipment to the infrastructure without requiring additional work.

Advantageously and according to the invention, said wired central network is an optical fiber network.

According to this aspect of the invention, an optical fiber network allows data transmission with a high bit rate (commonly called very high bit rate), adapted for use by a large number of users, and with a small footprint.

Advantageously and according to the invention, said wireless connection means is adapted to transmit data between said central network and at least one equipment according to a short-distance wireless telecommunication protocol. According to this aspect of the invention, the wireless connection means is for communicating with the local equipment or devices located near the interface device. Preferably, if the wired core network is an optical fiber network that allows data to be transmitted at a high maximum rate, the wireless telecommunication protocol allows the data to be transmitted at a rate as close as possible to this maximum network rate. . Thus, there is no significant loss of flow due to the passage of the central network to the wireless network created by the wireless connection means. Advantageously and according to the invention, the wireless connection means is adapted to transmit data between said central network and at least one device according to an IEEE 802.11 wireless telecommunication protocol. According to this aspect of the invention, the IEEE 802.11 wireless telecommunication protocol, commonly known by its Wi-Fi business name, is a widely used protocol in the field of data telecommunications, especially for networks connected to the Internet. In particular, it allows data transmission at high speed, which can be secured and with several devices simultaneously. Preferably, the protocol uses encryption mechanisms such as WiFi Protected Access (WPA) or WPA2 to secure data transmissions.

Advantageously and according to the invention, said connection chamber is hollowed out in part of the road reserved for pedestrian use.

According to this aspect of the invention, the road reserved for pedestrian use, also called sidewalk, is located closest to buildings generally along the road and in which local equipment is likely to be. In addition, sidewalks suffer little degradation due to the passage of the vast majority of pedestrians and rare light vehicles such as two-wheelers or light vehicles maintenance of public space. Advantageously and according to the invention, said interface device comprises a photovoltaic cell configured to electrically power the wireless connection means. According to this aspect of the invention, the photovoltaic cell makes it possible to ensure energy autonomy by means of wireless connection. Advantageously and according to the invention, said interface device comprises an electric accumulator configured to electrically power said wireless connection means. By electric accumulator is meant any accumulator for storing energy and returning it in the form of electrical energy, whatever the form of energy used for storage in the accumulator (kinetic, electrostatic, electromagnetic, electrochemical, etc.). According to this aspect of the invention, the wireless connection means is powered by stored electrical energy. Advantageously and according to the invention, said photovoltaic cell is configured to supply said electric accumulator electrically. According to this aspect of the invention, the photovoltaic cell makes it possible to supply the connection means and the charge of the electric accumulator when the latter recovers energy from the light. When the ambient light no longer makes it possible to feed the wireless connection means, the electric accumulator takes over by supplying said wireless connection means with the stored energy.

Advantageously and according to the invention, at least one local device is a user terminal. User terminal means a device that can be used directly by a user, for example a computer, a mobile phone, a touch pad, etc. According to this aspect of the invention, the user terminal connects directly to the core network through the interface device. The interface device acts as an access point for user terminals to connect to the Internet. The user terminal is also easily transportable throughout the area covered by the interface device without loss of connection, which enhances the mobility of user terminals inside the building in which they are located. Preferably, the interface device allows the connection of at least forty user terminals simultaneously.

Advantageously and according to the invention, at least one local device is a local gateway adapted to connect the central network with a local area network comprising at least one user terminal. According to this aspect of the invention, a local device is a gateway to a local area network connecting one or more user terminals. The local equipment can be arranged in a common premises of a building and the local network can for example be a wired local network connecting the different user terminals with the local equipment. The invention also relates to an interface device between at least one wired central data transmission network of an infrastructure of a telecommunication network laid out in a public space road, and at least one local transmission equipment. data arranged in the vicinity of said road, characterized in that it comprises: a connection chamber formed in said road and connected to said wired central network, at least one wireless connection means arranged in said connection chamber and adapted to transmit data between said wired central network and at least one local equipment. The invention also relates to an infrastructure of a network and an interface device characterized in combination by all or some of the characteristics mentioned above or below. 5. List of Figures Other objects, features and advantages of the invention will become apparent on reading the following description given solely by way of non-limiting example and which refers to the appended figures in which: FIG. 1 is a diagrammatic view of a section of a public space comprising an infrastructure of a network according to one embodiment of the invention, FIG. 2 is a schematic perspective view of an interface device of an infrastructure of a network according to a embodiment of the invention, FIG. 3 is a schematic sectional view of an interface device of an infrastructure of a network according to one embodiment of the invention, FIG. 4 is a diagrammatic view of a connection chamber of an infrastructure of a network according to one embodiment of the invention. 6. Detailed Description of an Embodiment of the Invention The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments may also be combined to provide other embodiments. Figure 1 shows schematically a section of a public space 10, comprising an infrastructure 12 of a network according to one embodiment of the invention. Public space 10 includes a road 14, divided into several parts: a central portion 16, commonly called a road, generally intended for the circulation of motorized vehicles, such as automobiles, coaches, trucks, motorcycles, etc., and two side parts, located on either side of the central portion 16 and reserved for pedestrian use or light vehicles such as two-wheelers or road maintenance vehicles. These side parts are called sidewalks in the current language and in the following description. Sidewalks are covered with a coating suitable for pedestrians and light vehicles. In Figure 1, only a sidewalk 18 is shown on one side of the central portion 16. In addition, the central portions 16 and the sidewalk 18 extend generally beyond what is shown in the direction of their length. , Figure 1 representing only a portion of the public space 10.

In this embodiment, a wired central network 20 is arranged in the sidewalk 18. The central network 20 is in this embodiment an optical fiber network, whose cables are arranged in trenches 22 of a width generally between 25mm and 30mm. The trenches 22 are dug along the entire length of the sidewalk 18 so as to extend the central network 20 a great distance. This central network is frequently called the urban loop. According to the invention, the infrastructure 12 of the network comprises an interface device 24. This interface device 24 comprises a connection chamber 26 formed in the street 14 and connected to the central network 20. In this embodiment, the connection chamber 26 takes a parallelepipedal shape in which various elements can be placed allowing the interface between the central network 20 and one or more local equipment 28a, 28b, 28c, 28d and 29 located nearby. In particular, the interface device 24 comprises a wireless connection means 30 arranged in the connection chamber 26 and adapted to transmit data between the central network 20 and the local equipment 28a, 28b, 28c, 28d, and 29. The device 24 of interface will be described in more detail in the following description with reference to Figures 2 and 3. The link that creates the device 24 interface between the core network 20 and local equipment 28a, 28b , 28c, 28d and 29 is called local loop. The local loop is here wireless. In the proximity of the sidewalk 18 are represented two buildings 32 and 33. These buildings are places likely to accommodate local equipment, for example: one or more terminals 28a, 28b, 28c, 28d users per building 32, 33: these terminals Users 28a, 28b, 28c, 28d are for example computers, mobile phone, touch pad, etc., which connect directly to the central network through the interface device. The local loop is here direct between the central network 20 and the user terminals 28a, 28b, 28c, 28d. one or more gateways 29, preferably one per building 32, 33: a gateway 29 allows the connection of one or more user terminals, grouped together in a local area network 34, to the wired central network 20 via the interface device 24 . The data exchanged by a user terminal therefore travels in the local network 34 to the gateway 29, which transmits the data to the interface device 24 which transmits them to the wired central network 20. The local loop is here between the gateway 29 and the central network 20. This gateway 29 allows the installation of, for example, a wired local network 34 inside the building 32, 33, for example with the aid of copper cables or the building's electrical network 32, 33 (PLC technology for in-line power lines). The bridge 29 may be located inside the building 32, 33, for example in a common room (not shown), in particular to be protected from external aggression, or on an outer wall of the building 32, 33 on the side of the road 14, especially to allow more efficient wireless transmission.

In the embodiment shown in FIG. 1, a first building 32 only accommodates user terminals 28a, 28b, 28c, 28d which connect to the central network 20 via the interface device 24 only. A second building 33 hosts a gateway 29 allowing the creation of a wired LAN 24 to which several user terminals are connected.

In other embodiments of the invention, a building 32, 33 can both accommodate user terminals connecting to the core network 20 through the interface device 24 only and one or more gateways 29 forming a network. local 24 with user terminals. Figures 2 and 3 show schematically, respectively in perspective and in section, a device 24 for interfacing an infrastructure 12 of a network according to one embodiment of the invention.

The interface device 24 comprises a connection chamber 26 arranged in this embodiment in the sidewalk 18. The interface device 24 also comprises a wireless connection means 30 and an electric accumulator 36, both arranged in the connection chamber 26, and a photovoltaic cell 38.

The wireless connection means 30 is connected to the wired central network 20, here thanks to one or more openings 40 in the connection chamber 26 (visible in FIG. 3 and FIG. 4) arranged at the level of the trenches 22 enabling the arrival The wireless connection means 30 uses in this embodiment the IEEE 802.11 protocol, this protocol being better known by its commercial name Wi-Fi. Other wireless protocols can be used. preferably short-distance telecommunication protocols with a high bit rate comparable to Wi-Fi, allowing connection of a multitude of terminals simultaneously and implementing security mechanisms for data transmissions (in particular by data encryption). The means 30 for wireless communication implements this wireless communication, for example via one or more transmitters. According to the embodiments, the communication means 30 may comprise a transmitter number comprised between a single transmitter for all the local equipment 28a, 28b, 28c, 28d and 29 and a transmitter for each local equipment 28a, 28b, 28c, 28d and 29. In this embodiment and as visible in Figures 2 and 3, the connection chamber 26 is arranged so that its upper face is flush with the pavement coating 18: thus, the upper face of the chamber 26 of connection consists of a pedestrian slab 42 on which pedestrians and light vehicles can circulate. This slab 42 pedestrian serves as a protective cover of the interior of the chamber 26 of protection. It is removable to allow equipment installation, maintenance or repair intervention, but its removal preferably requires a specific equipment or technique so as to be feasible only by qualified and authorized persons.

The wireless connection means 30, arranged in the connection chamber 26, is powered by the photovoltaic cell 38 sensing light radiation incident on its surface to generate electricity. To capture the light radiation (mainly solar radiation), the photovoltaic cell 38 is advantageously disposed over the entire upper surface of the pedestrian slab 42. The photovoltaic cell 38 is directly on the surface of the pedestrian slab 42 or covered with a protective layer allowing the light radiation to pass, such as, for example, a glass slab. In addition, the photovoltaic cell 38 and / or its protective layer is preferably adapted to withstand various constraints, for example road cleaning stresses by mechanical means (brushes, high pressure jet, etc.) or chemical (cleaning agent). , or other constraints related to its development on the road 14 (resistance to hydrocarbon flows, etc.). The photovoltaic cell 38 is connected to the wireless connection means 30 for supplying it via any equipment (not shown) necessary for the conversion and management of the electricity generated by the photovoltaic cell to the cell. the type of electricity needed to power the wireless connection means. In particular, these equipments can be an inverter enabling the conversion of a DC voltage into AC voltage, a transformer making it possible to adapt the voltage level, a voltage and / or intensity regulator, etc.

According to another embodiment, the photovoltaic cell 38 is deported from the connection chamber 26, for example placed in height on a street furniture element, and is connected to the connection chamber 26 by an electric cable. To compensate for absences or occasional drops (bad weather conditions, temporary obstruction of light, etc.) or periodic (shaded area according to the schedule, night, etc.) of light radiation for feeding the means of 30 connection without In this connection, a part of the electricity produced by the photovoltaic cell can be stored in an electric accumulator 36, here a battery, preferably arranged in the connection chamber 26 near the wireless connection means 30. The electric accumulator 36 stores the electricity produced by the photovoltaic cell 38 during periods when the light radiation is sufficient, and supplies the wireless connection means 30 during the other periods.

According to another embodiment, the wireless connection means 30 is powered by another means, for example by an electrical network, for example by electric cables arranged in the trench.

According to another embodiment, the interface device 24 comprises several means 30 of wireless connections, for example for reasons of performance (for example transmission of data by multiple paths), reliability (for example redundancy in the case of failure of a means 30 of wireless connection), of use (for example different wireless telecommunication protocols according to the uses), etc. FIG. 4 schematically represents a connection chamber 26 of an infrastructure 12 of a network according to one embodiment of the invention. The connection chamber 26 is a rectangular parallelepiped whose upper face is the pedestrian slab 42 described above. The connection chamber 26 comprises on one or more of these lateral faces one or more openings 40 allowing the arrival of the optical fiber cables of the central network 20: here, an opening 40 is located on a lateral face and an opening (not shown because not visible) is located on the opposite side face, so as to allow the arrival of optical fiber cables disposed in trenches 22 as shown in Figure 1. In this embodiment, the dimensions of the chamber 26 of connection are a length L of 1000mm, a width I of 750mm and a height h of 400mm. The installation of this infrastructure 12 is done easily by requiring less work than a conventional installation: in practice and according to an embodiment of an installation of an infrastructure 12 of a network according to the invention, the central network 20 is installed in a large area, such as a city, a district or a village, by the installation of optical fibers of the central network 20 in the trenches 22 dug in the road 14, especially in the sidewalk 18 To allow an installation of the infrastructure 12 or to provide for a future installation of this infrastructure 12, a location reserved for a connection chamber 26 is formed in the path of the trench 22 dug. The creation of a multitude of infrastructures 12 as part of a major development of the public space requires similarly the installation of a multitude of infrastructures 12 and thus to provide several rooms 26 connection, preferably along the length of the central network 20. These work operations in the road for the installation of a network is commonly called VRD works for Roads and Miscellaneous Networks. The location thus excavated makes it possible to accommodate the connection chamber 26, such as for example that shown in FIG. 4. In the case where local equipment 28a, 28b, 28c, 28d and 29 have to be connected to the central network 20, the establishment of the connection chamber 26 is followed by the arrangement of the other elements of the interface device 24, such as the wireless connection means 30, the electric accumulator 36, the photovoltaic cell 38, and so on. , and the connection of the wireless connection means 30 to the central network 20. Nevertheless, if the connection is not provided at the time of installation of the connection chamber 26, the arrangement of the other elements of the device 24 d The interface can be done a posteriori, simply by removing the pedestrian tile 42 to allow the arrangement of the elements and the connection of the wireless connection means 30 to the central network 20. The connection is thus simple way without requiring work Additional on the street 14, as would require a copper cable connection according to the prior art. Since the VRD works often require an administrative authorization, the connection as presented in this embodiment makes it possible to dispense with this authorization.

Claims (11)

REVENDICATIONS1. Infrastructure of a telecommunication network comprising a central wired data transmission network (20) provided in a public space road (10), at least one equipment (28a; 28b; 28c; 28d; 29); data transmission room arranged in the vicinity of said roadway (14), and an interface device (24) between the central network (20) and at least one local equipment (28a; 28b; 28c; 28d; 29), characterized in that said interface device (24) comprises: a connection chamber (26) formed in said network (14) and connected to said wired central network (20), at least one arranged wireless connection means (30) in said connection chamber (26) and adapted to transmit data between said wired core network (20) and at least one local equipment (28a; 28b; 28c; 28d; 29). 2. Infrastructure according to the preceding claim, characterized in that said core network (20) is an optical fiber network. 3. Infrastructure according to one of the preceding claims, characterized in that said means (30) wireless connection is adapted to transmit data between said central network (20) and at least one equipment (28a; 28b; 28c; 28d, 29) according to a short-distance wireless telecommunication protocol. 4. Infrastructure according to one of the preceding claims, characterized in that the means (30) of wireless connection is adapted to transmit data between said central network (20) and at least one equipment (28a; 28b; 28c; 28d, 29) according to an IEEE 802.11 wireless telecommunication protocol. 5. Infrastructure according to one of the preceding claims, characterized in that said connecting chamber (26) is hollowed in a portion (18) of the road (14) reserved for pedestrian use. 6. Infrastructure according to one of the preceding claims, characterized in that said interface device (24) comprises a photovoltaic cell (38) configured to electrically power the means (30) of wireless connection. 7. Infrastructure according to one of the preceding claims, characterized in that said interface device (24) comprises an accumulator (36) electrical configured to electrically supply said means (30) wireless connection. 8. Infrastructure according to claims 6 and 7 taken together, characterized in that said photovoltaic cell (38) is configured to electrically supply said accumulator (36) electric. 9. Infrastructure according to one of the preceding claims, characterized in that at least one local device is a user terminal (28a; 28b; 28c; 28d). 15 10. Infrastructure according to one of the preceding claims, characterized in that at least one local device is a local gateway (29) adapted to connect the central network (20) with a local area network (34) comprising at least one user terminal. . 20 11. An interface device between at least one wired central data transmission network of an infrastructure of a telecommunications network arranged in a public space road (14) and at least one equipment (28a). 28b; 28c; 28d; 29) data transmission room arranged in the vicinity of said road (14), characterized in that it comprises: a connection chamber (26) formed in said road (14) and connected to said a wired core network (20), at least one wireless connection means (30) arranged in said connection chamber (26) and adapted to transmit data between said wired core network (20) and at least one piece of equipment (28a); 28b; 28c; 28d; 29) local.