EP0199266B1 - Système de radio mobile - Google Patents

Système de radio mobile Download PDF

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Publication number
EP0199266B1
EP0199266B1 EP86105205A EP86105205A EP0199266B1 EP 0199266 B1 EP0199266 B1 EP 0199266B1 EP 86105205 A EP86105205 A EP 86105205A EP 86105205 A EP86105205 A EP 86105205A EP 0199266 B1 EP0199266 B1 EP 0199266B1
Authority
EP
European Patent Office
Prior art keywords
radio
mobile radio
vehicle
vehicles
fuko
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86105205A
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German (de)
English (en)
Other versions
EP0199266A1 (fr
Inventor
Romuald Dipl.-Ing. Von Tomkewitsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT86105205T priority Critical patent/ATE54398T1/de
Publication of EP0199266A1 publication Critical patent/EP0199266A1/fr
Application granted granted Critical
Publication of EP0199266B1 publication Critical patent/EP0199266B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
    • G08G1/133—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams within the vehicle ; Indicators inside the vehicles or at stops

Definitions

  • the invention relates to a mobile radio system for establishing telephonic connections to and from vehicles via radio links between on-board mobile radio devices and fixed radio concentrators, the geographical area covered by the system being divided into a plurality of partially overlapping radio cells and a radio concentrator being permanently assigned to each radio cell, and each having locating devices are provided in order to identify the radio cell corresponding to the vehicle location and to assign the mobile radio device to the radio concentrator corresponding to this radio cell.
  • the system of radio cells in mobile radio systems serves to make the radio channels, which are only available to a limited extent, usable in many ways.
  • the transmission power of the mobile radio devices in the vehicles and the radio concentrators is chosen so low that it can essentially only be received within a radio cell.
  • the same channels can then be used at a certain spatial distance. If the total number of participants in the mobile radio system is to be increased without additional radio frequencies being available, the number of radio cells must be increased and the size thereof must be reduced, the transmission power also being reduced at the same time.
  • a problem with mobile radio systems is the assignment of the vehicle positions to the relevant radio cells or the associated radio concentrators.
  • vehicle location is carried out for this purpose by means of field strength measurement or by means of transit time measurement.
  • Signals are exchanged between the radio concentrators and the vehicles in their range, whereby by determination the field strength or by measuring the transit times determine which radio concentrator is closest to the vehicle or has the best reception conditions.
  • Such measurement methods are indeed usable as long as the radio cells have a relatively large extension, so that signal falsifications, for example distortion of transit times due to reflections from buildings and the like, are negligible.
  • the requirements for radio location increase.
  • the location accuracy is principally limited due to the already mentioned disturbed radio wave propagation, since tall buildings shield direct radio transmission.
  • a radio contact only comes about through detours through numerous reflections, whereby these detours can amount to a few kilometers and can therefore be of the order of the radio cell diameter. If this happens, the location errors are no longer tolerable for the system.
  • the object of the invention is to provide a mobile radio system of the type mentioned, in which the location of the vehicles and thus their assignment to certain radio cells and radio concentrators is possible in a simple manner and with high accuracy, so that the reliability of the system is increased.
  • this object is achieved in that a navigation device is provided in each of the vehicles, which determines the location data of the vehicle by means of a vehicle's own dead reckoning navigation device, said beacon location data being corrected when passing through stationary beacons, and the mobile radio system being designed in such a way that that the location data determined in each case in the navigation device is transmitted to the mobile radio device of the vehicle and that the mobile radio device (MB) evaluates this location data by comparison with the location data of the individual radio cells to determine the associated radio cell or the associated radio concentrator.
  • a navigation device is provided in each of the vehicles, which determines the location data of the vehicle by means of a vehicle's own dead reckoning navigation device, said beacon location data being corrected when passing through stationary beacons, and the mobile radio system being designed in such a way that that the location data determined in each case in the navigation device is transmitted to the mobile radio device of the vehicle and that the mobile radio device (MB) evaluates this location data by comparison with the location data of the individual radio cells to determine the associated radio cell or the associated radio concentrator.
  • the invention thus works with a beacon-based dead reckoning system with which a very precise location determination of the vehicles can be carried out continuously while driving.
  • the construction of such a location system alone as a supplement to the mobile radio system would be relatively complex.
  • the costs for such a location in the mobile radio system are minimal if a navigation system of the type described is available as part of a traffic control system for individual traffic anyway, the infrastructure for the beacons being set up as part of the traffic control system and the individual vehicles equipped with a navigation device are.
  • a route guidance system is described, for example, in EP-PS 00 21 060 and 00 25 193.
  • the position data determined in the vehicle by the navigation device are simply transferred to the mobile radio device and transmitted from there to the radio concentrators which can be reached, the assignment to the radio cells in the radio concentrators being calculated.
  • the data of the radio cells are stored in the mobile radio device of the vehicle according to their location and dimensions, so that the mobile radio devices can independently calculate which radio cell they are currently in by comparing the radio cell data with the position data of the vehicle. You can then switch to the corresponding radio channel and register with the respective radio concentrators.
  • the radio cell data is stored depending on the shape of these radio cells, for example by storing the coordinates of the corner points of rectangles or by storing the center coordinates and the radii of circles.
  • the respective beacons as well as the location coordinates for the passage of a vehicle also transmit the location coordinates for the radio cells of a certain surrounding area, so that they can each be supplied to the mobile radio device and stored therein.
  • this information can also be used for the mobile radio system.
  • the radio concentrators concerned can already be notified of a change to a neighboring radio cell. In this way, it is also possible to make a telephone call from the beginning in the overlap zones via the radio cell into which the vehicle is entering. In this way, the need to change channels during a call will only rarely exist, even with radio cells of small dimensions.
  • a vehicle F contains a mobile radio device MB, which connects via an antenna AN in a known manner to a fixed radio concentrator FuKo, which is within the transmission range, and, if necessary, establishes a telephone connection via this radio concentrator.
  • the mobile radio device MB is connected to a navigation device N, which constantly determines its current location in the vehicle.
  • the vehicle also contains a dead reckoning navigation device KON, which processes the measured values of a magnetic field probe MS and a wheel pulse generator RIG and transmits the path vector calculated therefrom to the navigation device.
  • beacons BK are distributed over the road network, preferably at important intersections, which, among other things, send precise location reports with their own position coordinates, so that every passing vehicle receives these coordinates and uses them to correct their navigation device N. can.
  • the information transfer between the beacons BK and the vehicles F takes place, for. B. via infrared devices, in each beacon an infrared transmitter SB and an infrared receiver EB, an infrared transmitter SF and an infrared receiver EF are arranged in the individual vehicles.
  • the infrared devices of the beacons can be arranged, for example, on signal masts SM of the crossroads in addition to the traffic signal transmitters VSG.
  • the beacon BK is connected to a control center LZ via a line L and also receives control information from there. Since the beacon BK, like the navigation device N of the vehicle, is part of a route guidance or.
  • Control systems for vehicles are, not only the location data mentioned, but also additional guidance information is exchanged between the respective beacon BK and the vehicle F passing, for example, a destination request of the vehicle entered in a destination memory ZSp of the vehicle from vehicle F to beacon BK or direction recommendations and other information from the beacon BK to the vehicle F.
  • a destination request of the vehicle entered in a destination memory ZSp of the vehicle from vehicle F to beacon BK or direction recommendations and other information from the beacon BK to the vehicle F In the operating device B of the vehicle, in addition to the target memory ZSp already mentioned, an input keyboard TA and a direction indicator RA are provided. However, this is not the subject of the present application, so that it will not be discussed further here.
  • the current location calculated in each case in the navigation device N of the vehicle is fed, preferably in the form of coordinates, to the mobile radio device MB and compared there with radio cell data in a comparison device VGL for example, are stored in a radio cell memory FSp.
  • the mobile radio device determines in which radio cell the vehicle is located and with which radio concentrator a desired telephone connection is to be established accordingly.
  • the data stored in the radio cell memory FSp for the different radio cells are also transmitted from the beacon BK to the vehicle when they pass a beacon BK and are transmitted to the mobile radio device MB for updating the memory FSp. It is sufficient if the data for the radio cells in the vicinity of the beacon are transmitted and stored.
  • this or a guidance recommendation corresponding to the destination request and received by the beacon can also be communicated to the mobile radio device.
  • the mobile radio device MB can already announce a change from one radio cell to another to the radio concentrator.
  • FIG. 2 different radio cells Z1 to Zn are shown schematically, the size of z. B. the population density or traffic density is adjusted. They are each described by their center point coordinates (x i ; y i ), (x 2 ; y 2 ) to (x n ; y n and their radii n, r 2 to r n .
  • a radio concentrator is assigned to each radio cell, e.g. B.
  • the beacon BK transmits these cell names and coordinates as well as their own coordinates (x B ; ye) to all passing vehicles, for example to the vehicle F1 in Fig. 2.
  • the navigation device N (FIG. 1) continuously determines the position of the respective vehicle during the further journey and communicates this to the mobile radio device MB, which can determine by simple calculation in which radio cell the vehicle is located.
  • the vehicle F2 moves in an overlap zone of the radio cells Z1 and Z3 in the direction of the center of Z3. So it makes sense to start a conversation from the start via the radio cell Z3 and its radio concentrator FuKo, because then it is not necessary to switch to another channel as soon as possible.
  • the radio concentrators can be arranged eccentrically in the radio cells, as shown in the radio cell Z2 using the example of the radio concentrator FuKo2. It is also possible to supply several radio cells from a single location, for example using directional antennas.
  • the FuKo3-4-n radio concentrator is one such example.

Claims (5)

1. Système de radiocommunications mobile pour établir des liaisons téléphoniques en provenance et en direction de véhicules (F) par l'intermédiaire de lignes hertziennes entre des appareils de radiocommunications mobiles (MB), installés sur les véhicules, et des concentrateurs hertziens fixes (FuKo), et
dans lequel la zone géographique couverte par le système est subdivisée en une multiplicité de cellules de radiocommunications (Z1 à Zn), qui se chevauchent partiellement, et un concentrateur hertzien (FuKo) est associé de façon fixe à chaque cellule de radiocommunications, et
dans lequel il est prévu respectivement des dispositifs de localisation, servant à identifier la cellule de radiocommunications (Z1 à Zn) qui correspond à l'emplacement du véhicule, et à associer l'appareil de télécommunications mobile (MB) au concentrateur hertzien correspondant à cette cellule de radiocommunications, caractérisé par le fait que dans les véhicules (F), il est prévu respectivement un appareil de navigation (N), qui détermine les données du lieu du véhicule à l'aide d'un dispositif de navigation à l'estime (KON), propre au véhicule, ces données étant corrigées lors du passage devant des balises fixes, avec les données d'emplacements des bali-. ses, reçues, et
que le système de radiocommunications mobile est agencé de manière que les données de lieu, déterminées respectivement dans l'appareil de navigation (N), sont retransmises à l'appareil de radiocommunications mobile (MB) du véhicule (F), et que l'appareil de radiocommunications mobile (MB) évalue ces données de lieu par comparaison aux données de lieu des différentes cellules de radiocommunications (Z1 à Zn) pour la détermination de la cellule de radiocommunications associée ou du concentrateur hertzien (FuKo) associé.
2. Système de radiocommunications mobile suivant la revendication 1, caractérisé par le fait que dans l'appareil de radiocommunications mobile respectif (MB), il est prévu une mémoire (FSp) servant à mémoriser les données de lieu de plusieurs cellules de radiocommunications.
3. Système de radiocommunications mobile suivant la revendication 2, caractérisé par le fait que les données de lieu respectives pour une ou plusieurs cellules de radiocommunications (Z1 à Zn) sont retransmises par les balises (BK) aux véhicules (F) passant devant elles.
4. Système de radiocommunications mobile suivant l'une des revendications 1 à 3, caractérisé par le fait que les données de lieu déterminées dans les véhicules (F) et concernant l'appareil de radiocommunications mobile (MB) sont transmises aux concentrateurs hertziens (FuKo), qui peuvent être atteints, et sont évaluées, dans ces derniers, en vue de l'association du véhicule (F) à une cellule de radiocommunications (Z1 à Zn).
5. Système de radiocommunications mobile suivant l'une des revendications 1 à 4, caractérisé par le fait que le contenu de mémoires de destinations (Zsp), prévu respectivement dans les véhicules, ou des directives reçues par les balises (BK) sont retransmises à l'appareil de radiocommunications mobile (MB) et que l'association à un concentrateur hertzien (FuKo) est réalisée en tenant compte de ces données de destination.
EP86105205A 1985-04-17 1986-04-15 Système de radio mobile Expired - Lifetime EP0199266B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105205T ATE54398T1 (de) 1985-04-17 1986-04-15 Mobilfunksystem.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3513929 1985-04-17
DE3513929 1985-04-17

Publications (2)

Publication Number Publication Date
EP0199266A1 EP0199266A1 (fr) 1986-10-29
EP0199266B1 true EP0199266B1 (fr) 1990-07-04

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EP86105205A Expired - Lifetime EP0199266B1 (fr) 1985-04-17 1986-04-15 Système de radio mobile

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EP (1) EP0199266B1 (fr)
AT (1) ATE54398T1 (fr)
DE (1) DE3672376D1 (fr)

Cited By (1)

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US8195188B2 (en) 1997-08-04 2012-06-05 Enovsys Llc Location reporting satellite paging system with optional blocking of location reporting

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DE3716320A1 (de) * 1987-05-15 1988-11-24 Bosch Gmbh Robert Verfahren zum bestimmen des ungefaehren aufenthaltsortes einer mobilen funkstation
GB8803785D0 (en) * 1988-02-18 1988-03-16 Marconi Gec Ltd Navigation system
GB8814456D0 (en) * 1988-06-17 1988-08-17 Cleveland Innovative Technolog Road vehicle locating system
DE3932029A1 (de) * 1988-12-15 1990-06-28 Sven Dipl Ing Haase Anlage zur positionserkennung von fahrzeugen innerhalb eines ueberwachungsgebietes
DE4011341A1 (de) * 1990-04-07 1991-10-10 Standard Elektrik Lorenz Ag Zeitmultiplex-uebertragungssystem
US5222249A (en) * 1990-11-08 1993-06-22 Motorola, Inc. Dynamic rf communication resource access by roving mobile units
US5155689A (en) * 1991-01-17 1992-10-13 By-Word Technologies, Inc. Vehicle locating and communicating method and apparatus
US5629975A (en) * 1991-09-20 1997-05-13 Qualcomm Incorporated Comprehensive mobile communications device registration method
US5289527A (en) * 1991-09-20 1994-02-22 Qualcomm Incorporated Mobile communications device registration method
CA2079827C (fr) * 1991-12-09 2003-08-19 Theresa Chen Yen Wang Systeme de reperage d'unites mobiles
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8195188B2 (en) 1997-08-04 2012-06-05 Enovsys Llc Location reporting satellite paging system with optional blocking of location reporting

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Publication number Publication date
DE3672376D1 (de) 1990-08-09
ATE54398T1 (de) 1990-07-15
EP0199266A1 (fr) 1986-10-29

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