DE19707501C1 - Optical microcable network with radio connections to subscribers - Google Patents

Abstract

The cable (2) is laid under the pavement between the lamp-posts (4), each of which has an optical connector and transmitter/receiver (7) installed in its pedestal. The signal is relayed by a radio link from an antenna (5) mounted on the lamp-post to a subscriber (TL) in a neighbouring building. The distance to each subscriber is short and a good radio link is guaranteed so that any data format, transmission method, data protection and type of modulation can be used.

Description

The invention relates to an optical fiber network with radio binding the participants according to the generic term of the patent saying 1.

For the conventional subscriber line are also at modern networks implemented with optical fibers in the Usually copper cable used. The connection devices ONUs (Optical Network Unit) are currently in standard housings housed. It is also planned to join the Participants use fiber optic cables (fiber to the desk). Since this installation is still costly cheaper connection options developed by radio, known as "Radio in the Lokal Loop" RLL.

Also laying the optical fibers up to the Connection devices is extremely complex and therefore expensive playful. Optical microcables can be used for this the one that can be laid without expensive earthwork.

So-called hybrid cables can also be used, which contain copper and optical fibers and from EP 0452 088 A1 are known. You can save on energy be used for message transmission.

From US Pat . No. 5,495,484, in particular FIG. 4, a telecommunication system is known in which telephones are connected via radio and connections to other wireless networks are also provided. However, no information is given on the hardware structure of the network.

From GB 21 56 837 A it is known optical fibers in Blown in free spaces of power cables. This means that even existing high-voltage networks can be operated without a Effort for the installation of fiber optic networks be used.

The task now is to create existing plants and use installations for a new optical network.

This object is achieved in accordance with the features of claim 1 solved.

The particular advantage is that with use the existing lampposts no longer a complex housing is needed and the height of the lampposts which are also suitable for attaching antennas.

It when the connection devices and the transceiver inside the lantern can be arranged at least. This can be flexible or use an already circularly curved electronics module be det. Also thanks to long, narrow electronics modules the hollow tube of the mast can be used well.

If the connection units are too large, they can completely or partially attached to the lamppost in a container be or in an underfloor container, for example a Sleeve, or housed in a building while the transmitting / receiving device in turn in the lampposts is arranged.

When storing the electronics in an underfloor container ter can be of a largely independent of the weather Operating temperature can be assumed and on heating cooling.

Because of the short distance between transmit / receive simple modulation is sufficient for the device and the participants proceed from.

The invention is explained in more detail with reference to figures.

Show it:  

Fig. 1 shows a preferred embodiment in which the terminal unit and the radio equipment in most Laternenma is mounted,

Fig. 2 is a flexible electronic assembly,

Fig. 3 shows an arrangement in which the connection unit is arranged in a container on the lamppost and

Fig. 4 shows the arrangement of the connection unit in an underfloor container and

Fig. 5 shows the arrangement of a connection device in a building.

Fig. 1 shows a schematic representation of a sidewalk 1 with several lampposts. 4 With the help of microcables 2 , an optical network is largely installed. These microcables are embedded in a groove that was milled into the asphalt of the sidewalk and poured after laying the microcable. The optical connecting and transmitting / receiving device 7 is installed in the base of the lampposts. The optical fibers are connected to them. It serves to convert the optical into electrical signals and vice versa and also contains the necessary devices for coupling and decoupling signals as well as the transmitter and receiver device. The antenna 5 for the transmitting / receiving devices is mounted in the upper area of the lamppost for reasons of range. This does not have to be the highest point, as shown, but can also be lower for reasons of lightning protection. The one-sided or bidirectional connection to the subscribers TL takes place via radio links. Since the distances to the participants are short and therefore a good radio connection is guaranteed, any data format, transmission method, data backup method and any suitable type of modulation can be used.

The connecting and transmitting / receiving device 7 can be realized with the help of long and narrow assemblies. Likewise, the assemblies can be realized on a flexible or curved Lei terplatte, as shown in Fig. 2. The flexible circuit board 10 can be inserted into the lantern base 6 through a maintenance opening 9, which can be closed by a door 11 , for example.

In Fig. 3, the optical fibers of the optical network are part of a hybrid cable 3 , which also serves as a power supply for street lighting. The connecting and transmitting and receiving device is accommodated in a housing 8 which is attached here outside the lamppost. If there is enough space in the later ning base, the building groups of the connecting and transmitting and receiving device can of course be accommodated there in whole or in part.

A fiber optic connection line 12 can lead to the participants in addition to the radio connection. Stationary systems for receiving broadband services can be connected to these for example.

In Fig. 4, a separate underfloor container 13 is provided for the acquisition of modules. The actual transmitting / receiving part 14 or parts thereof can again be arranged in the lantern base 6 .

In Fig. 5 a variant of an additional container is shown, in which in the roof of a building 15 a connection housing 16 is provided for receiving assemblies. The transmitting / receiving parts 14 are again housed in the bases 6 of the lampposts. Likewise, a further transmitting / receiving part can be provided in the building and provide the connection to the subscribers TL via its own antenna 17 .

Claims (6)

1. fiber optic network ( 2 ) with radio connection of the participants (TL), characterized in
that the optical fiber network ( 2 , 3 ) at least partially with optical fiber micro cables ( 2 ) or optical fiber ent-containing hybrid cables ( 3 ) is constructed and
that connecting and transmitting / receiving devices ( 7 ) for the radio connection in the cavities of lampposts ( 4 ) or in the lampposts ( 4 ) attached housings ( 8 ) are arranged. 2. Optical fiber network according to claim 1, characterized in that the connecting and transmitting / receiving device ( 7 ) is designed as a flexible assembly ( 10 ) which is circularly bendable. 3. Optical fiber network according to claim 1 or 2, characterized in that an optical fiber connecting line ( 12 ) is guided to the subscriber by the connecting and transmitting / receiving device ( 7 ). 4. Optical waveguide network according to claim 1, characterized in that an underfloor housing ( 13 ) for receiving modules ( 18 ) of the connection and transceiver ( 7 ) is easily seen and that the actual transceiver part ( 14 ) in which Base of the lampposts ( 4 ) is arranged. 5. Optical waveguide network according to claim 1, characterized in that in buildings ( 15 ) connection housing ( 16 ) for receiving modules ( 18 ) of the connecting and transmitting / receiving device ( 7 ) are provided, which with the actual transmitting / receiving parts ( 14th ) are connected in the bases of the lampposts ( 4 ). 6. Optical fiber network according to claim 5, characterized in that an additional transceiver part and an antenna ( 17 ) are provided in the buildings ( 15 ).