EP0951791A1 - Procede et systeme de production commandee d'une intensite de trafic dans des systemes radiotelephoniques mobiles - Google Patents

Procede et systeme de production commandee d'une intensite de trafic dans des systemes radiotelephoniques mobiles

Info

Publication number
EP0951791A1
EP0951791A1 EP97954668A EP97954668A EP0951791A1 EP 0951791 A1 EP0951791 A1 EP 0951791A1 EP 97954668 A EP97954668 A EP 97954668A EP 97954668 A EP97954668 A EP 97954668A EP 0951791 A1 EP0951791 A1 EP 0951791A1
Authority
EP
European Patent Office
Prior art keywords
mobile stations
bus
control computer
mobile
load
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.)
Withdrawn
Application number
EP97954668A
Other languages
German (de)
English (en)
Inventor
Manfred Menne
Wolfram Tuchscheerer
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.)
Condat AG
Original Assignee
CONDAT DV BERATUNG ORGANISATIO
Condat DV-Beratung Organisation Software GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19708793A external-priority patent/DE19708793C1/de
Application filed by CONDAT DV BERATUNG ORGANISATIO, Condat DV-Beratung Organisation Software GmbH filed Critical CONDAT DV BERATUNG ORGANISATIO
Publication of EP0951791A1 publication Critical patent/EP0951791A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H04B17/16—Test equipment located at the transmitter

Definitions

  • the invention relates to a method and an / arrangement for the controlled generation of a traffic load in cellular mobile radio systems, in particular for GSM, PCN, DECT, TETRA and analog trunked radio systems or the like
  • Control requires a monitoring personal computer, on which programs for test generation, control and evaluation then run.
  • test sequences must be defined separately for each load generator and downloaded to the monitoring PC. Test results must be called up by the load generators and combined to form an overall result, which is very complex in terms of software.
  • load test generators have become known, which autonomous mobile stations with so-called auto-answer Use functions. With these auto-answer mobile stations, an incoming call is accepted and, after termination by the calling party, is ended automatically by hanging up. With such an arrangement, any number of mobile stations can be used as load generators, but no outgoing calls can be generated, which represents an essential functional restriction for load simulation. In addition, special and additional precautions for generating the calls to the auto-answer mobile stations must be taken in the infrastructure components (base station) of the radio system.
  • DE 43 30 705 AI describes a mobile device for testing base stations within a mobile radio system. There, information is to be exchanged simultaneously with one or more base stations via an antenna on several radio channels.
  • the antenna of the mobile test device is connected to a duplexer, which is followed by a down mixer, a demodulator and a decoder.
  • the duplexer is preceded by transmission means, namely an encoder, a modulator and an up-mixer.
  • the modulator, the up and down mixer and the demodulator are connected to a clock control.
  • the clock control as well as the encoder and decoder are acted upon by a microcontroller, which in turn is connected to a workstation computer, with corresponding control signals.
  • An interface module is connected on the one hand to the encoder and decoder and on the other hand to subscriber terminals.
  • the interface module for the subscriber terminals is operated via the microcontroller in such a way that each of the connected subscriber terminals can be connected to a radio channel by means of the transmitting means and the receiving means.
  • the radio transmission in the send and receive direction is checked, whereby the assignment of several radio channels is also possible at the same time. This does simulate the access of several mobile stations to one carrier frequency, however real mobile stations cannot be logged into the corresponding radio network independently or simultaneously.
  • the object of the invention is a method and an arrangement for the controlled generation of a traffic load for cellular
  • the generated traffic load is to be realized by the outgoing or incoming calls generated or received by the mobile stations, the type of call being freely configurable for each mobile station.
  • the object of the invention is achieved with a method as defined in claim 1 and with an arrangement according to the features of claim 7.
  • the subclaims include at least expedient refinements and developments of the invention.
  • the basic idea of the invention is to implement a method for the controlled generation of a traffic load for cellular mobile radio systems, in particular GSM, PCN, DECT, TETRA and analog trunked radio systems or the like, in that a large number of mobile stations are connected to a common fieldbus-type bus become. All connected mobile stations then communicate with a single control computer via this common bus. If the mobile stations used do not have an interface which permits their direct connection to a fieldbus-like bus, controllers are used according to the invention to adapt the physical interface of the mobile stations to the bus.
  • Testbus protocol called UTBP, protocol can be processed.
  • controllers according to the invention thus serve, in particular,
  • Information relevant to the control computer is mapped to UTBP messages and transmitted to the control computer.
  • controllers used abstract the interface of the mobile stations both in electrical and in mechanical and in information technology terms for the software of the load test arrangement running on the control computer.
  • the solution according to the invention for operating a load test system uses mobile stations which can establish connections to a base station of the radio system to be tested via radio channels. These connections can be set up for any number, in particular also the maximum number, for example 500 of the mobile stations present in the load test system.
  • the control computer can use suitable software to gradually increase or decrease the load generated for testing the base station by activating or deactivating the mobile stations connected to the bus.
  • the number of mobile stations used in the load test system can easily be increased or decreased by connecting or disconnecting other mobile stations to the bus.
  • the establishment of connections between the mobile stations and the base station of the mobile radio system is determined by the control computer mentioned, which is hardware-connected via a bus adapter and a corresponding bus system to the corresponding interfaces of the mobile stations, test results reaching the control computer in the same way via the bus system appropriate evaluation and display procedures can be subjected here.
  • all mobile stations of the load test system can be activated from the existing single control computer without it being necessary, as in the known state of the art
  • a particular advantage of the invention is that in the technical implementation, instead of a large number of physical connections to the control computer, each of which represents at least two-wire lines, only a single bus connection is necessary, to which the individual mobile stations are connected in the manner of a stub line.
  • test steps to be processed synchronously can be initiated.
  • Such test steps can e.g. B. the simultaneous triggering of dialing processes or the simultaneous termination of connections.
  • the transient response i.e. the time until a significant traffic load is built up, can be reduced.
  • the mobile stations can be cell phones, handheld radios, wireless telephone terminals or the like.
  • the mobile stations are connected directly to the bus, if their interface allows, otherwise via a controller.
  • the method according to the invention and the associated arrangement are used for load test systems, the corresponding test sequences for the mobile stations used being able to be generated from a single control computer.
  • the control computer can directly or via the controller
  • Fig. 1 shows a first embodiment of the arrangement using mobile stations that have an interface that can be connected directly to a fieldbus-like bus and
  • Fig. 2 shows a second embodiment of the arrangement using mobile stations that have an RS232 interface and interact with local controllers that are connected to the bus.
  • the arrangement according to FIG. 1 is based on a control computer SR which has a CAN bus adapter.
  • a large number, in the example shown, of up to 500 mobile stations M are connected via a CAN bus and communicate with the GSM base station subsystem BSS via radio channels FK.
  • the repeaters necessary for such a high number of bus nodes are not shown in the figure to simplify the illustration.
  • the mobile stations M used have a CAN interface so that they can be connected directly to the CAN bus via them.
  • the control computer is able to send the messages necessary for generating the load to the connected mobile stations via the CAN bus and to receive response messages from them.
  • the control computer can address each individual mobile station in a targeted manner or groups of mobile stations or all mobile stations via suitable CAN bus messages.
  • the mobile stations M are connected via RS232 interfaces to a locally arranged controller CM assigned to each mobile station M.
  • the controllers CM are connected to the CAN bus in such a way that communication with the control computer SR is possible via the CAN adapter.
  • the controllers CM communicate with the mobile station M via the manufacturer-specific interface and the manufacturer-specific messages defined thereon.
  • controllers CM communicate with the control computer SR via the bus, which is a CAN bus in the exemplary embodiment, and the CAN adapter.
  • the control computer SR therefore only provides a single CAN bus interface in order to control all mobile stations M integrated in the example 500 shown in the load test arrangement by means of the controller CM.
  • control computer SR and the controller CM exchange messages of the UTBP protocol specially tailored to the load test via the CAN bus.
  • UTBP messages received by the controller are analyzed by it. If communication with the mobile station is required, this is carried out using the manufacturer-specific messages of the mobile station via the RS232 interface.
  • the information relevant for the control and evaluation of the test process by the control computer is sent from the controller to the control computer as UTBP messages via the CAN bus.
  • This can be, for example, the functional status of the mobile station recognized by the controller via the RS232 interface.
  • the control computer SR can thus directly with an easy-to-use software, the activities of the mobile stations M control and analyze, display to the user and make the process influenceable by the user.
  • the desired traffic load changes in a simple manner, e.g. can be gradually increased.
  • the control computer SR can simultaneously address all mobile stations with a single message.
  • the exemplary embodiments presented therefore assume that a large number of mobile stations are used which are operated via a common fieldbus-type bus. If they provide a suitable bus interface themselves, they are connected directly to this bus. If this is not the case, a controller is assigned to each mobile station. These controllers then access the common bus. In both cases, communication with a single control computer is possible via this bus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un système de production commandée d'une intensité de trafic dans des systèmes radiotéléphoniques mobiles cellulaires, notamment pour des systèmes GSM, RCP, DECT, TETRA, ainsi que des systèmes radiotéléphoniques à interconnexion analogues ou du même type, référence étant faite aux stations mobiles connues en soi, qui sont pilotées et contrôlées par un ordinateur de commande et établissent des connexions avec une station fixe par l'intermédiaire de canaux radio et produisent par conséquent une intensité de trafic. Selon l'invention, on utilise une pluralité de stations mobiles pouvant être actonnées par l'intermédiaire d'un bus commun. Si les stations mobiles ne disposent pas d'interface appropriée au bus commun, un contrôleur est alloué à chacune d'elles. Les contrôleurs peuvent alors avoir accès à un bus commun et communiquer par l'intermédiaire dudit bus avec l'unique ordinateur de commande.
EP97954668A 1997-01-09 1997-12-22 Procede et systeme de production commandee d'une intensite de trafic dans des systemes radiotelephoniques mobiles Withdrawn EP0951791A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19700501 1997-01-09
DE19700501 1997-01-09
DE19708793 1997-03-04
DE19708793A DE19708793C1 (de) 1997-01-09 1997-03-04 Verfahren und Anordnung zum gesteuerten Erzeugen einer Verkehrslast in Mobilfunksystemen
PCT/EP1997/007236 WO1998031174A1 (fr) 1997-01-09 1997-12-22 Procede et systeme de production commandee d'une intensite de trafic dans des systemes radiotelephoniques mobiles

Publications (1)

Publication Number Publication Date
EP0951791A1 true EP0951791A1 (fr) 1999-10-27

Family

ID=26033008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97954668A Withdrawn EP0951791A1 (fr) 1997-01-09 1997-12-22 Procede et systeme de production commandee d'une intensite de trafic dans des systemes radiotelephoniques mobiles

Country Status (3)

Country Link
EP (1) EP0951791A1 (fr)
AU (1) AU5955498A (fr)
WO (1) WO1998031174A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1331894A (zh) * 1998-12-21 2002-01-16 艾利森电话股份有限公司 带有因特网协议寻址群集的无线电通信测试系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993015569A1 (fr) * 1992-01-28 1993-08-05 Comarco, Incorporated Systeme de commande automatique pour telephones cellulaires
DE4330705A1 (de) * 1993-09-10 1995-03-16 Sel Alcatel Ag Mobile Testvorrichtung
DE29703948U1 (de) * 1997-01-09 1997-04-24 CONDAT DV-Beratung Organisation Software GmbH, 10559 Berlin Anordnung zum gesteuerten Erzeugen einer Verkehrslast in Mobilfunksystemen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9831174A1 *

Also Published As

Publication number Publication date
WO1998031174A1 (fr) 1998-07-16
AU5955498A (en) 1998-08-03

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