FR2840481A1 - WIRELESS LOCAL AREA TEST APPARATUS - Google Patents

WIRELESS LOCAL AREA TEST APPARATUS Download PDF

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Publication number
FR2840481A1
FR2840481A1 FR0206617A FR0206617A FR2840481A1 FR 2840481 A1 FR2840481 A1 FR 2840481A1 FR 0206617 A FR0206617 A FR 0206617A FR 0206617 A FR0206617 A FR 0206617A FR 2840481 A1 FR2840481 A1 FR 2840481A1
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Prior art keywords
test apparatus
network
card
housing
frames
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FR0206617A
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FR2840481B1 (en
Inventor
Vincent Fargue
Florent Prat
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Individual
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Individual
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Priority to FR0206617A priority Critical patent/FR2840481B1/en
Priority to PCT/FR2003/001597 priority patent/WO2003103219A1/en
Priority to AU2003251107A priority patent/AU2003251107A1/en
Priority to EP03756010A priority patent/EP1510040A1/en
Publication of FR2840481A1 publication Critical patent/FR2840481A1/en
Application granted granted Critical
Publication of FR2840481B1 publication Critical patent/FR2840481B1/en
Priority to US10/995,680 priority patent/US20050101257A1/en
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Expired - Fee Related legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/06Testing, supervising or monitoring using simulated traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/50Testing arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

Appareil de test (15), permettant d'analyser la qualité de la connexion à un point d'accès d'un réseau local sans fil, à partir d'un lieu susceptible d'accueillir un équipement informatique incluant une carte de communication sans fil, caractérisé en ce qu'il se présente sous la forme d'un boîtier comportant : - un logement (9) apte, recevoir de façon interchangeable une carte de communication sans fil (16); - des moyens de traitement des signaux émis et/ ou reçu à destination et/ ou en provenance du point d'accès au réseau; - des moyens d'affichage (17) d'informations relatives auxdits signaux.Test apparatus (15), for analyzing the quality of the connection to an access point of a wireless local area network, from a place capable of accommodating computer equipment including a wireless communication card , characterized in that it is in the form of a housing comprising: - a housing (9) capable of, interchangeably receiving a wireless communication card (16); - means for processing signals sent and / or received to and / or from the network access point; - display means (17) for information relating to said signals.

Description

APPAREIL DE TEST D'UN R1ISEAU LOCAL SANS FILWIRELESS LOCAL AREA TEST APPARATUS

Domaine Technique L'invention se rattache au domaine des reseaux informatiques sans fil. Wile vise plus precisement un appareil de test qui peut etre utilise pour optimiser et ou valider la configuration d'un reseau local sans fil, notamment en ce qui concerne le materiel utilise, et les emplacements des differents points d' acces au reseau. L 'invention permet notamment de tester les liaisons hertziennes repondant aux normes IEEE  Technical Field The invention relates to the field of wireless computer networks. Wile more specifically targets a test device which can be used to optimize and or validate the configuration of a local wireless network, in particular with regard to the hardware used, and the locations of the various access points to the network. The invention makes it possible in particular to test the radio links meeting the IEEE standards.

802.1 1, HomeRF et HiperLAN.802.1 1, HomeRF and HiperLAN.

Technioues anterieures Dans le domaine des reseaux informatiques, on constate un developpement important des reseaux locaux sans fil, egalement appeles WLAN, pour << Wireless Local Area Network >>. Ce type de reseau presente de grands avantages par rapport aux reseaux cables, du fait de la flexibilite de leur interface, qui permet a un utilisateur de se  Previous techniques In the area of computer networks, there is a significant development of local wireless networks, also called WLAN, for "Wireless Local Area Network". This type of network has great advantages over cable networks, due to the flexibility of their interface, which allows a user to

deplacer a l'interieur de la zone couverte par le reseau, tout en restart connecte.  move inside the area covered by the network, while connected restart.

De facon generale, les differents equipements informatiques, tels que les stations de travail, les imprimantes ou autres peripheriques, vent relies au reste du reseau, par  Generally speaking, the various computer equipment, such as workstations, printers or other peripherals, are connected to the rest of the network, by

une liaison hertzienne.a radio link.

Cette liaison hertzienne permet de relier done chaque equipement avec une borne  This wireless link therefore allows each equipment to be connected with a terminal

d'acces au reseau, equipement appele point d'acces, ou poet.  network access, equipment called access point, or poet.

Les differents points d'acces au reseau vent relies entre eux, soit par une liaison  The different access points to the wind network linked together, either by a link

hertzienne, soit encore par des liaisons filaires.  over the air, or again by wire links.

La qualite de la liaison hertzienne entre un equipement informatique et le point d'acces correspondent est determinante pour un bon fonctionnement du reseau, et notamment pour un acces de 1'equipement en reseau avec un debit suffisant. Or, la qualite de cette liaison hertzienne depend notamment du type de materiel employe, et surtout de la localisation des points d'acces, et des emplacements destines a  The quality of the radio link between a computer equipment and the corresponding access point is decisive for a good functioning of the network, and in particular for an access of the equipment in network with a sufficient flow. However, the quality of this radio link depends in particular on the type of equipment used, and especially on the location of the access points, and the locations intended for

accueillir les equipements informatiques.  host IT equipment.

C' est pourquoi, lors de ['installation d'un reseau local sans fil, il est necessaire d'effectuer un certain nombre de verifications afin de s'assurer de la qualite de la connexion aux differents points d'acces a partir des lieux susceptibles d'accueillir les  That is why, when installing a local wireless network, it is necessary to carry out a certain number of verifications in order to ensure the quality of the connection to the different access points from the premises. likely to welcome

equipements informatiques.IT equipment.

A ce jour, differentes methodes ou materiels vent employee pour effectuer ces verifications. Ainsi, dans une premiere approche, il peut etre possible d'estimer la qualite des 0 connexions a partir d'une modelisation theorique de la confguration des locaux, de ['emplacement des differents points d'acces, et du type de materiel utilise. Des logiciels permettent d'evaluer les gains et debits theoriques correspondent a une telle configuration. On concoit bien evidemment que des ecarts peuvent 8tre observes entre les calculs theoriques et les gains et debits reels, de sorte que cette methode reposant  To date, different methods or materials have been used to carry out these verifications. Thus, in a first approach, it may be possible to estimate the quality of the 0 connections from a theoretical model of the configuration of the premises, the location of the different access points, and the type of equipment used. Software allows to evaluate the theoretical gains and debits corresponding to such a configuration. It is obviously understood that deviations can be observed between theoretical calculations and real gains and debits, so that this method rests

uniquement sur une evaluation theorique n'est pas reellement satisfaisante.  only on a theoretical evaluation is not really satisfactory.

Dans une seconde approche, la qualite des connexions peut 8tre contrGlee en utilisant une ordinateur portable, qui est equipe d'un logiciel de test. Ce logiciel de test, par exemple celui commercialise par la societe AVAYA sous la reference "Orinoco Client Manager" permet de determiner la valeur du gain entre un signal emis par un point d'acces et l'ordinateur portable, qui est equipe d'une carte de communication  In a second approach, the quality of connections can be checked using a laptop computer, which is equipped with test software. This test software, for example that marketed by the company AVAYA under the reference "Orinoco Client Manager" makes it possible to determine the value of the gain between a signal emitted by an access point and the portable computer, which is equipped with a communication card

sans fi1.without fi1.

2s Une telle solution ntest pas reellement satisfaisante, puisque elle ne permet pas reellement d'analyser le bon fonctionnement du reseau, mais simplement la mesure d'un gain. Le debit du reseau est en effet simplement estime a partir des valeurs de gain mesurees, de sorte que lorsque le reseau est reellement en charge, les valeurs de debit reelles different tres souvent de ces valeurs de debit theoriques.;: En outre, ce mode de verifcation necessite l'emploi d'un ordinateur portable, qui peut s'averer encombrant. En outre et surtout, les mesures effectuees par ce type de 2$ .l,: -3 methode vent eminemment dependantes du type de materiel utilise, et notamment de  2s Such a solution is not really satisfactory, since it does not really allow the proper functioning of the network to be analyzed, but simply the measurement of a gain. The network speed is in fact simply estimated from the measured gain values, so that when the network is actually loaded, the actual flow values very often differ from these theoretical flow values.:: In addition, this mode verification requires the use of a laptop, which can be cumbersome. Furthermore and above all, the measurements made by this type of $ 2 .l ,: -3 wind method eminently dependent on the type of material used, and in particular on

la carte de communication associee a l'ordinateur portable.  the communication card associated with the laptop.

Une troisieme methode est connue pour tester la qualite de la connexion, qui fait appel a des appareils de test specifiques, tels que notamment celui commercialises  A third method is known for testing the quality of the connection, which uses specific test devices, such as in particular that sold.

par la societe Berkeley Varitronic System, sous la reference LOCUST.  by the company Berkeley Varitronic System, under the reference LOCUST.

Un tel appareil se presente sous la forme d'un botier qui, comprend un emetteur d'ondes radio, susceptible d'emettre dans la gamme de frequence correspondent au io reseau local. Cet appareil permet de visualiser un certain nombre d'informations relatives a la qualite de la connexion, et notamment le gain et le rapport signal sur bruit. Ce type d'appareil presente plusieurs inconvenients, et notamment le fait qutil ne permet pas de mettre en charge le reseau et de verifier quel est effectivement le debit reel que peut supporter le reseau. En outre, l'emetteur radio utilise un logiciel de communication proprietaire, et les resultats obtenus ne vent par consequent pas repres entatifs de c eux obtenus avec les pro duits installes de fac on definitives car ils utilisent eux aussi un autre logiciel proprietaire. Ce type d'emetteur ne possede done pas les memes caracteristiques que sur les cartes de communication associees aux  Such an apparatus is in the form of a housing which, comprises a transmitter of radio waves, capable of transmitting in the frequency range correspond to the local network. This device makes it possible to display a certain amount of information relating to the quality of the connection, and in particular the gain and the signal to noise ratio. This type of device has several drawbacks, and in particular the fact that it does not make it possible to charge the network and to verify what is actually the real bit rate that the network can withstand. In addition, the radio transmitter uses proprietary communication software, and the results obtained are therefore not representative of those obtained with the products permanently installed because they too use other proprietary software. This type of transmitter therefore does not have the same characteristics as on the communication cards associated with

differents equipements informatiques, destines a etre relies au reseau.  various computer equipment, intended to be connected to the network.

Autrement dit, l'analyse de la qualite de la connexion faite par ce type d'appareil peut s'ecarter des resultats de performances reels, observes avec les equipements qui  In other words, the analysis of the quality of the connection made by this type of device can deviate from the results of real performance, observed with the equipment which

seront relies au reseau.will be connected to the network.

Un premier probleme que se propose de resoudre ['invention est celui de permettre une analyse aussi complete que possible de la qualite de la liaison hertzienne avec le point d'acces au reseau, notamment en determinant des valeurs de debit  A first problem that the invention proposes to solve is that of allowing as complete an analysis as possible of the quality of the radio link with the access point to the network, in particular by determining flow values.

correspondent a des situations de charge du reseau.  correspond to network load situations.

Un autre probleme que se propose de resoudre ['invention est celui de permettre une analyse de la qualite de connexion qui prenne en compte le type de materiel qui sera utili se sur le s equipements informatiques destines a etre relies au reseau, avec la  Another problem which the invention proposes to solve is that of allowing an analysis of the quality of connection which takes into account the type of hardware which will be used on the computer equipment intended to be connected to the network, with the

grande diversite que l'on conna^t.great diversity that we know.

À........... ..AT........... ..

-4 Expose de ['invention L' invention concerne done un appareil de test, permettant d' analyse la qualite de la connexion a un point d'acces d'un reseau local sans fil, a partir d'un lieu susceptible d'accueillir un equipement informatique incluant une carte de communication sans  Description of the invention The invention therefore relates to a test apparatus, making it possible to analyze the quality of the connection to an access point of a local wireless network, from a place capable of accommodating IT equipment including a communication card without

s fil.s wire.

L'appareil de test conforme a ['invention se caracterise en ce qu'il se presente sous la forme d'un boitier, comportant: - un logement apte a recevoir de fapon interchangeable une carte de lO communication sans fil; - des moyens de traitement des signaux emis et/ou recus a destination et/ou en provenance du point d'acces au reseau; - des moyens d'affichage dtinformations relatives aux dits signaux; Autrement dit, l'appareil conforme a ['invention peut recevoir differentes cartes de communication, qui vent avantageusement choisies pour presenter les proprietes analogues a celles qui vent montees sur les equipements destines a etre implantes sur  The test device according to the invention is characterized in that it is in the form of a box, comprising: - a housing adapted to receive interchangeably a wireless communication card; means for processing the signals sent and / or received to and / or from the point of access to the network; - means for displaying information relating to said signals; In other words, the device according to the invention can receive different communication cards, which are advantageously chosen to present properties similar to those which are mounted on the equipment intended to be installed on

le lieu du test.the place of the test.

Ainsi, avantageusement en pratique, le logement de l'appareil peut etre configure pour recevoir des cartes de communication sans fil du type PCMCIA (pour  Thus, advantageously in practice, the housing of the device can be configured to receive wireless communication cards of the PCMCIA type (for

<< Personal Computer Memory Card International Association >>).  << Personal Computer Memory Card International Association >>).

Dans le cas ou les equipements informatiques destines a etre relies au reseau vent des 2s ordinateurs portables, equipes d'un logement de reception d'une carte PCMCIA, la carte de communication montee dans l'appareil de test peut etre une carte identique, ou dont la partie emettrice presente des proprietes et des caracteristiques identiques ou equivalentes. Ainsi l'utilisateur pourra integrer dans l'appareil une carte PCMCIA de constructeur et de reference identiques a celles utilisees de facon definitive sur le  In the case where the computer equipment intended to be connected to the wind network of the 2 portable computers, equipped with a housing for receiving a PCMCIA card, the communication card mounted in the test apparatus may be an identical card, or the transmitting part of which has identical or equivalent properties and characteristics. Thus the user will be able to integrate into the device a PCMCIA card of manufacturer and reference identical to those used definitively on the

site teste.site tests.

Bien entendu, d'autres materiels informatiques que les ordinateurs portables peuvent  Of course, other computer hardware than laptops can

recevoir des cartes de communication au format PCMCIA.  receive communication cards in PCMCIA format.

Dans le cas ou les equipements informatiques destines a etre implantes sur le reseau possedent des cartes de communication d'un format different, on choisira comme carte PCMCIA a inserer dans l'appareil de test, une carte dont la partie emettrice/receptrice a proprement parler possede les memes caracteristiques et proprietes. Par cette disposition, les resultats de l'analyse de la qualite de la connexion seront tres representatifs de la situation reelle, lorsque les materiels informatiques seront  In the case where the computer equipment intended to be installed on the network has communication cards of a different format, a PCMCIA card to be inserted in the test device will be chosen, a card of which the transmitting / receiving part strictly speaking has the same characteristics and properties. By this arrangement, the results of the analysis of the quality of the connection will be very representative of the real situation, when the computer hardware is

relies au reseau.connected to the network.

Avantageusement en pratique, les moyens de traitement associes a l'appareil de test vent apses a controler le fonctionnement de la carte de communication associee selon  Advantageously in practice, the processing means associated with the wind test device are able to control the operation of the associated communication card according to

un programme ou pilote, selectionne dans une liste predeterminee.  a program or pilot, selected from a predetermined list.

i5 Autrement dit, l'appareil de test contient les differents fichiers de configuration ou  i5 In other words, the test device contains the different configuration files or

pilotes, qui permettent de faire fonctionner la carte de communication.  drivers, which operate the communication card.

Ces fichiers vent avantageusement identiques a ceux qui seront montes dans les equipements informatiques, de maniere a obtenir un resultat d'analyse correspondent  These files are advantageously identical to those which will be mounted in the computer equipment, so as to obtain a corresponding analysis result.

le plus possible a la realite du reseau.  as much as possible to the reality of the network.

Avantageusement en pratique, l'appareil de test comporte egalement des moyens de mise a jour de la liste predeterminee de pilotes, de maniere a pouvoir utiliser les derrieres versions de pilotes, ou plus generalement, des versions correspondent a celles qui vent installees sur les equipements informatiques, destines a etre relies au reseau. Selon une autre caracteristique de ['invention, l'appareil de test comporte egalement des moyens d'enregistrement des informations relatives aux signaux emis et/ou recus a destination et/ou en provenance du point d'acces au reseau, de maniere a pouvoir  Advantageously in practice, the test apparatus also comprises means for updating the predetermined list of pilots, so as to be able to use the latest versions of pilots, or more generally, versions correspond to those which are installed on the equipment. computer, intended to be connected to the network. According to another characteristic of the invention, the test apparatus also comprises means for recording information relating to the signals transmitted and / or received to and / or from the point of access to the network, so as to be able to

etablir un certain nombre de statistiques, concernant cette connexion.  to establish a certain number of statistics, concerning this connection.

-:- -6 Avantageusement en pratique, l'appareil de test peut comporter egalement des moyens de transfert a destination d'un ordinateur, des differentes informatiques  -: - - 6 Advantageously in practice, the test apparatus may also include means of transfer to a computer, various computer systems

relatives aux signaux echanges avec le point d'acces au reseau.  relating to the signals exchanged with the access point to the network.

s De la sorte, il est possible d'effectuer des traitements plus perfectionnes et/ou des  s In this way, it is possible to carry out more sophisticated treatments and / or

sauvegardes des donnees de tests sur un ordinateur distinct.  backup of test data on a separate computer.

Selon une autre caracteristique de ['invention, l'appareil de test est prograrnme de telle sorte que les moyens de traitement vent apses a emettre des paquets de donnees  According to another characteristic of the invention, the testing apparatus is programmed so that the processing means are quick to transmit data packets

o ou frames selon un protocole compatible avec le reseau local sans fil.  o or frames according to a protocol compatible with the local wireless network.

De la sorte, ltenvoi de ces frames permet de verifier le fonctionnement du reseau lorsque celui-ci est en charge, ce qui permet d'analyser ['evolution du debit en  In this way, sending these frames makes it possible to verify the operation of the network when it is in charge, which makes it possible to analyze the evolution of the debit in

fonction de cette charge.depending on this load.

Avantageusement en pratique, les moyens de traitement vent apses a emettre des frames de longueur differentes, et ce pour determiner ['evolution du debit en fonction  Advantageously in practice, the processing means are quick to emit frames of different length, and this to determine the evolution of the bit rate as a function

du type de frame emise.the type of frame sent.

Avantageusement en pratique, la longueur des frames peut etre configurable par l'utilisateur, de maniere a lui permettre d'effectuer differents types de tests,  Advantageously in practice, the length of the frames can be configurable by the user, so as to allow him to perform different types of tests,

correspondent a des situations differentes d'utilisation du reseau.  correspond to different situations of network use.

De meme, les taches d'envoi de frame peuvent etre programmees pour etre 2s effectuees de facon repetitive, et pendant des durees predeterminees, correspondent a d'autres types d'utilisation du reseau. '  Likewise, frame send tasks can be scheduled to be performed repeatedly, and for predetermined times correspond to other types of network usage. '

Description sommaire des fiuresBrief description of fiures

La maniere de realiser ['invention, ainsi que les avantages qui en decoulent,  The way of carrying out the invention, as well as the advantages which flow from it,

ressortiront bien de la description du mode de realisation qui suit, donne a titre  will emerge well from the description of the embodiment which follows, given as

d'exemple non limitatif, et a l'appui des figures annexees, dans lesquelles:  non-limiting example, and with the support of the appended figures, in which:

La figure 1 est une vue schematique illustrant une partie d'un reseau local sans fil.  Figure 1 is a schematic view illustrating part of a local wireless network.

:: > ) : ::? -7::>): ::? -7

La figure 2 est une vue en perspective sommaire de l'appareil de test conformement  Figure 2 is a summary perspective view of the test apparatus in accordance

a ['invention.to the invention.

Maniere de realiser ['invention Comme deja evoque precedemment, ['invention concerne un appareil de test destine  How to carry out the invention As already mentioned above, the invention relates to a test device intended

a analyser la qualite des liaisons hertziennes de connexion a un reseau local sans fl.  to analyze the quality of radio links connecting to a local wireless network.

Dans la configuration illuskee dans la figure l, le reseau local (l) est represente par lO un certain nombre de poets (2) relies enke eux par des liaisons filaires (3), et egalement relies par exemple, a un serveur (4). Bien entendu, il s'agit la d'une representation schematique, et ['invention permet d'analyser les proprietes de type de reseaux sans fil d'architectures tres variees, pouvant etre particulierement complexes. Plus precisement, chaque pont (2)constitue un point d'acces au reseau, et est equipe  In the configuration illuskee in FIG. 1, the local network (l) is represented by lO a certain number of poets (2) linked together by wire connections (3), and also also connected for example, to a server (4) . Of course, this is a schematic representation, and the invention makes it possible to analyze the properties of the type of wireless networks of very varied architectures, which can be particularly complex. More precisely, each bridge (2) constitutes a point of access to the network, and is equipped

de moyens d'emission et de reception incluant notamment une antenne (6).  transmission and reception means including in particular an antenna (6).

Ces poets (2) vent disposes en des lieux appropries des locaux dans lequel est  These poets (2) are placed in suitable places of the premises in which is

deploye le reseau.deploy the network.

L'objectif de ['invention est de pernettre de determiner la qualite de liaison hertzienne enke un pont (2) formant un point d'acces au reseau, et un equipement  The objective of the invention is to enable the quality of the radio link to be determined between a bridge (2) forming a point of access to the network, and equipment

informatique (10) dispose a un emplacement determine.  computer (10) has a determined location.

Dans la forme illustree, cet equipement est represente sous forme d'un ordinateur  In the illustrated form, this equipment is represented in the form of a computer

(10), sur lequel est monte une carte de communication sans fl (l l).  (10), on which is mounted a wireless communication card (l l).

Cette carte (l1) peut eke du type enfichable et extractible, selon le standard PCMCIA. Il peut s tagir de facon plus courante d'une carte d' extension du type PCI (cite carte berceau), montee a demeure dans l' unite centrale de l'ordinateur (10) et  This card (l1) can be of the plug-in and extractable type, according to the PCMCIA standard. It can more generally be tagged with an expansion card of the PCI type (cited as cradle card), permanently mounted in the central unit of the computer (10) and

supportant une carte PCMCIA.supporting a PCMCIA card.

-8 I1 pourrait par ailleurs s'agir d'un module de communication sans fil, relic par un  -8 I1 could also be a wireless communication module, relic by a

autre moyen a ['unite centrale, par exemple par une liaison de type USB.  other means to the central unit, for example by a USB type link.

Bien entendu, d'autres equipements informatiques peuvent etre relies au reseau sans fil, tel que des imprimantes, des lecteurs pour codes a barres, des organiseurs  Of course, other computer equipment can be connected to the wireless network, such as printers, barcode readers, organizers

personnels (types PDA), des telephones mobiles...  personal (PDA types), mobile phones ...

L'invention concerne done un appareil de test (15), tel qu'illustre a la figure 2, qui  The invention therefore relates to a test apparatus (15), as illustrated in FIG. 2, which

perrnet d'analyser la qualite de la liaison hertzienne vis a vis du reseau sans f1.  perrnet to analyze the quality of the hertzian connection with respect to the network without f1.

Cet appareil portable (15), peut etre deplace dans la zone de portee du pont (2). I1 peut notamment 8tre dispose aux emplacements future des differents equipements qui  This portable device (15) can be moved within the range of the bridge (2). It can in particular be placed at future locations of the various equipment which

seront destines a etre relies au reseau (1).  will be intended to be connected to the network (1).

Conformement a ['invention, cet appareil de test (15) se presente sous la forme d'un bo^tier, qui comprend un microcontroleur, destine a assurer une fonction de traitement des donnees, une carte de liaison hertzienne, ainsi qu'un interface (17,18) permettant d'afficher les donnees calculees et d'entrer les instructions. Ce microcontr81eur permet une mise en route rapide et un arret rapide du bo^tier. Le bo^tier pourra fonctionner indifferemment branche directement sur le secteur via une entree d'alimentation integree (22) ou avec des batteries rechargeables,  In accordance with the invention, this test apparatus (15) is in the form of a housing, which comprises a microcontroller, intended to provide a data processing function, a radio link card, as well as a interface (17,18) allowing to display the calculated data and to enter the instructions. This microcontroller allows rapid start-up and rapid shutdown of the unit. The box can operate either connected directly to the mains via an integrated power input (22) or with rechargeable batteries,

eventuellement via ['entree (22), ou non.  possibly via ['entry (22), or not.

Plus precisement, le microcontr81eur peut etre monte sur une carte, par exemple au format PC 104, ou ETX/ENCORE ou sur une carte developpee specifiquement pour ['application. Cette carte est associee a une carte additionnelle, compatible avec la carte du microcontr81eur, et agencee pour recevoir une carte de communication  More precisely, the microcontroller can be mounted on a card, for example in PC 104 format, or ETX / ENCORE or on a card developed specifically for the application. This card is associated with an additional card, compatible with the microcontroller's card, and arranged to receive a communication card

hertzienne de type PCMCIA (16).PCMCIA type wireless (16).

Dans une forme particuliere, cette carte additionnelle (16), peut recevoir plusieurs cartes de type PCMCIA, dont une sert a la liaison hertzienne, l'autre pouvant etre  In a particular form, this additional card (16) can receive several PCMCIA type cards, one of which is used for the radio link, the other being

utilisee pour des fonctions accessoires, tel que notamment la sauvegarde de donnees.  used for ancillary functions, such as in particular data backup.

-9- Une caracteristique importante de ['invention reside dans la possibilite d/interchanger la carte de communication hertzienne (16) pour utiliser une carte identique ou analogue a celle qui equipe les materiels informatiques destines a etre  An important characteristic of the invention resides in the possibility of interchanging the wireless communication card (16) in order to use a card identical or analogous to that which equips the computer hardware intended to be

relies au reseau.connected to the network.

s Comme deja evoque, il peut s'agir de cartes identiques, si ces equipements vent equipes de cartes de type PCMCIA. De meme, lorsque les cartes montees dans les ordinateurs par exemple, vent des cartes de type PCI, la carte PCMCIA (16) choisie pour etre enfichee dans le boitier de test, sera la meme que la carte PCMCIA o enfichee dans la carte berceau PCI. Dans le cadre, par exemple, de bo^tier USB integrant un module d'emission/reception, la carte PCMCIA (16) choisie pour le etre enfichee dans le bo^tier de test sera une carte dont le module d'emission/reception (20) est analogue, ctest a dire presente des proprietes et des caracteristiques identiques ou extremement proches de celle (11) montee dans l'ordinateur (si  s As already mentioned, these may be identical cards, if these devices are fitted with PCMCIA type cards. Similarly, when the cards mounted in computers, for example, sell PCI type cards, the PCMCIA card (16) chosen to be plugged into the test box will be the same as the PCMCIA card o plugged into the PCI cradle card. . In the context, for example, of a USB box integrating a transmitting / receiving module, the PCMCIA card (16) chosen to be inserted in the test box will be a card whose transmitting / receiving module (20) is analogous, that is to say presents properties and characteristics identical or extremely close to that (11) mounted in the computer (if

s possible du meme constructeur).s possible from the same manufacturer).

La similitude entre les deux cartes de communication passe egalement par l'emploi  The similarity between the two communication cards also involves employment

de fichiers de configuration, ou pilotes, qui vent egalement identiques ou analogues.  configuration files, or drivers, which are also identical or analogous.

En effet, le bo^tier de test (15) assure le fonctionnement de la carte de communication, ainsi que l'echange des informations, selon un pilote qui est dedie a la carte, et qui peut avantageusement eke le m8me que celui qui sera monte dans  Indeed, the test box (15) ensures the functioning of the communication card, as well as the exchange of information, according to a pilot who is dedicated to the card, and who can advantageously be the same as that which will be get onto

l'equipement informatique en liaison avec le reseau.  IT equipment in connection with the network.

2s Cette possibilite permet de tester la qualite de la liaison hertzienne dans des conditions logicielles et materielles particulierement proches de celles qui  2s This possibility makes it possible to test the quality of the hertzian link in software and material conditions particularly close to those which

prevaudront lorsque le materiel informatique definitif (10) sera lie au reseau.  prevail when the final IT equipment (10) is linked to the network.

Pour ce faire, le bo^tier (15) comprend des moyens de memoire, incluant un ensemble de pilotes correspondent a chacune des cartes de communication qui peuvent eke inserees dans le boitier. Ce pilote peut se charger automatiquement en fonction du type de carte inseree dans le bo^tier, ou bien encore, etre choisi de fa$on  To do this, the housing (15) comprises memory means, including a set of drivers corresponding to each of the communication cards which can be inserted in the housing. This driver can be loaded automatically depending on the type of card inserted in the case, or alternatively, be chosen so

precise et a la demande par l'utilisateur par acces via un menu.  precise and at the request by the user by access via a menu.

-10 Ces pilotes peuvent egalement etre telecharges au sein du bo^tier, soit par l'intermediaire d'une liaison filaire, reliee par exemple par une liaison serie au  -10 These drivers can also be downloaded within the box, either via a wired link, connected for example by a serial link to the

boitier, ou par tout autre type de liaison, notamrnent parallele ou USB.  box, or by any other type of link, in particular parallel or USB.

Bien entendu, le telechargement peut egalement s'effectuer par l'intermediaire de la liaison hertzienne, via la carte de communication (16) ou via un lecteur de cartes de  Of course, the downloading can also be carried out via the radio link, via the communication card (16) or via a card reader.

memoire integre (23).du type COMPACTFLASH.  integrated memory (23). of the COMPACTFLASH type.

En fonctionnement, les moyens de traitement incluant le botier permettent de  In operation, the processing means including the housing make it possible to

o calculer et d'affcher differentes grandeurs relatives au fonctionnement du reseau.  o calculate and display different quantities relating to the operation of the network.

Parmi ces grandeurs, on peut notamment citer le niveau de signal recu tent de la part du pont (2) que de la carte (11), ainsi que le niveau de bruit, et done, le rapport signal sur bruit. La qualite de la liaison peut egalement 8tre caracterisee par le debit de la liaison et le gain. Ces parametres seront done analyses et pourront etre sauvegardes, de facon bi-directionnelle, soit tent au niveau du pont (2) que de la carte (11). D'autres parametres relatifs a la liaison peuvent 8tre traites par le bo^tier (15), et notamment les parametres d'identification du reseau et du pont utilise, ainsi que du  Among these quantities, we can notably cite the signal level received from the bridge (2) than from the card (11), as well as the noise level, and therefore, the signal to noise ratio. The quality of the link can also be characterized by the link speed and the gain. These parameters will therefore be analyzed and can be saved, bi-directionally, either at the level of the bridge (2) or of the card (11). Other parameters relating to the link can be processed by the box (15), and in particular the parameters for identifying the network and the bridge used, as well as the

canal de communication en fonction.communication channel in operation.

Le fait que la liaison soit cryptee ou non peut egalement etre determine par les  Whether the link is encrypted or not can also be determined by

moyens de traitement.means of treatment.

Selon une autre caracteristique de ['invention, le boitier (15) est configure pour :5 emettre a destination du pont des ensembles de donnees, egalement appeles frames,  According to another characteristic of the invention, the box (15) is configured to: 5 send to the bridge data sets, also called frames,

pour verifier le bon fonctionnement du reseau en charge.  to check the correct operation of the network under load.

Ces frames peuvent par exemple, etre configurees selon le protocole IP (pour Internet Protocol), et inclure de facon classique des informations relatives a l'adresse de l'emetteur, l'adresse du recepteur, le type de donnees transmises, ainsi que des  These frames can, for example, be configured according to the IP protocol (for Internet Protocol), and conventionally include information relating to the address of the transmitter, the address of the receiver, the type of data transmitted, as well as

codes de verification de type CRC.CRC type verification codes.

Les moyens de traitement vent apses a emettre des frames de longueurs differentes, correspondent a des etats de charge differents du reseau, ces longueurs pouvant aller  The means of processing wind apt to emit frames of different lengths, correspond to different states of charge of the network, these lengths being able to go

de quelques centaines a quelques milkers d'octets.  from a few hundred to a few byte milkers.

s Differents modes de fonctionnement peuvent etre mis en ccuvre, correspondent a des  s Different operating modes can be implemented, corresponding to

tests differents.different tests.

Des trains de kames de longueurs identiques ou variables peuvent etre envoyes, soit de facon ponctuelle, soit de facon continue, de maniere a verifer leur bonne lo transmission a destination du poet, par l'analyse de la frame d'accuse de reception envoye par le poet. Des reglages de la duree du test, ainsi que de la longueur des  Trains of kames of identical or variable lengths can be sent, either punctually or continuously, so as to verify their good transmission to the poet, by analyzing the acknowledgment frame sent by the poet. Settings for the duration of the test, as well as the length of the

frames peuvent etre effectues par l'utilisateur.  frames can be made by the user.

Pour ce faire, l'utilisateur a un clavier (18), a sa disposition, sur le bo^tier. Ce clavier peut comporter differentes touches comme dans la forme illustree a la figure 2, ou bien encore, inclure un nombre de touches inferieures, permettant de naviguer dans des menus staffichant sur l'ecran (17) de type LCD par exemple. Le clavier peut egalement inclure des leviers (ou "joy sticks"), ou bien encore des dispositifs de  To do this, the user has a keyboard (18), at his disposal, on the housing. This keyboard may include different keys as in the form illustrated in FIG. 2, or alternatively, include a number of lower keys, making it possible to navigate in menus displayed on the screen (17) of LCD type for example. The keyboard can also include levers (or "joy sticks"), or even devices for

type souris tactile integree, ou des zones d'ecran tactile.  integrated touch mouse type, or touch screen areas.

Les moyens de traitement vent configures pour autoriser la modification de la puissance d'emission, ainsi que la frequence dans la gamme accessible par la carte  The wind processing means configured to authorize the modification of the transmission power, as well as the frequency in the range accessible by the card

de communication.Communication.

2s Les moyens de traitement vent egalement configures pour autoriser des debits correspondent a la norme EKE 802.11. Ces debits peuvent adopter des valeurs de 1, 2, 5,5 et 11 megabits/seconde, mais les moyens de traitement vent configures pour stadapter a des debits differents si necessaires, par exemple les valeurs de 54, 36, 24, 12 et 6 megabits/seconde pour la norme 802.a Les moyens de traitement vent configures pour afficher un certain nombre  2s The processing means are also configured to authorize flow rates correspond to the EKE 802.11 standard. These bit rates can adopt values of 1, 2, 5.5 and 11 megabits / second, but the processing means are configured to adapt to different bit rates if necessary, for example the values of 54, 36, 24, 12 and 6 megabits / second for standard 802.a The processing means are configured to display a certain number

d'informations au niveau de l'ecran (17) installe sur le bo^tier.  information at the level of the screen (17) installed on the housing.

-12 La liste des informations affichees correspond a celle evoquee ciavant. Cette liste peut eventuellement confgurable selon le souhait de l'utilisateur et selon ['evolution  -12 The list of information displayed corresponds to that mentioned above. This list can possibly be configured according to the user's wishes and according to ['evolution

des normes et des pilotes (ou drivers) associes aux cartes.  standards and drivers associated with the cards.

Les donnees relatives aux differentes liaisons, ainsi qu'aux differentes operations de test en charge, peuvent etre sauvegardees au sein du boitier, ou bien encore transmises soit par une liaison filaire, soit par une liaison hertzienne a destination d'un ordinateur distant, qui permet d'effectuer des statistiques, mais encore des  The data relating to the different links, as well as to the different load test operations, can be saved within the box, or else transmitted either by a wired link, or by a radio link to a remote computer, which allows to perform statistics, but still

sauvegardes ou autres analyses iteratives.  backups or other iterative analyzes.

Ces sauvegardes pourront, par exemple, etre effectuees grace a un lecteur/graveur de  These backups can, for example, be performed using a reader / writer of

cartes de memoire de type COMPACTFLASH integre au boitier (23).  COMPACTFLASH type memory cards integrated in the housing (23).

Bien entendu, la liaison du bo^tier (l5) avec tout equipement informatique permet d' assurer un telechargement a la fois de version la plus recense du logiciel destine a faire fonctionner les moyens de traitement, ainsi que les differentes mises a jour de pilotes ou drivers des cartes de communication susceptibles d'etre installees dans  Of course, the connection of the box (15) with all the computer equipment makes it possible to download the most recent version of the software intended to operate the processing means, as well as the various driver updates. or drivers of communication cards likely to be installed in

l'appareil de test.the test device.

Il ressort de qui precede que l'appareil de test conforme a ['invention presente de multiples avantages, et notarnment: - une possibilite de recevoir des cartes de communication correspondent dans leur partie materielle et logicielle, a celles qui seront employees dans les materiels ulterieurement relies au reseau sans fil; - la possibilite d'effectuer des tests de debit et de gain en charge, par l'envoi des differents types de frame, de longueur variable;  It follows from the foregoing that the test apparatus in accordance with the invention has multiple advantages, and in particular: connected to the wireless network; - the possibility of carrying out flow and load gain tests, by sending different types of frame, of variable length;

- la possibilite d'enregistrer et de personnaliser les tests realises.  - the possibility of recording and personalizing the tests carried out.

- La possibilite de telecharger des logiciels ou pilotes pour mise a jour du logiciel interne au bo^tier  - The possibility of downloading software or drivers for updating the software internal to the box

- La possibilite de se demarrer et steteindre rapidement.  - The possibility to start and stop quickly.

-13-13

Claims (10)

REVENDICATIONS 1/ Appareil de test (l5), permettant d'analyser la qualite de la connexion a un point d' acces ( 1) d' un reseau local sans fil, a partir d'un lieu susceptible d' accueillir un s equipement infornatique (10) incluant une carte de communication sans fil (11), caracterise en ce qu'il se presente sous la forme d'un bo^tier comportant: - un logement (9) apte a recevoir de fa,con interchangeable une carte de communication sans fil (16); - des moyens de traitement des signaux emis et/ou recu a destination et/ou en 0 provenance du point d'acces (2) au reseau (1);  1 / Test device (l5), making it possible to analyze the quality of the connection to an access point (1) of a local wireless network, from a place capable of accommodating computer equipment ( 10) including a wireless communication card (11), characterized in that it is in the form of a housing comprising: - a housing (9) capable of receiving fa, interchangeably with a communication card wireless (16); means for processing the signals sent and / or received to and / or from the access point (2) to the network (1); - des moyens d'affichage (17) dtinformations relatives auxdits signaux.  - display means (17) for information relating to said signals. 2. Appareil de test selon la revendication 1, caracterise en ce que le logement (19) est  2. Test apparatus according to claim 1, characterized in that the housing (19) is apte a recevoir des cartes de communication sans fil (16), du type PCMCIA.  suitable for receiving wireless communication cards (16), of the PCMCIA type. 3. Appareil de test selon la revendication 1, caracterise en ce que les moyens de traitement vent apses a contr81er le fonctionnement de la carte de communications sans  3. Test apparatus according to claim 1, characterized in that the processing means are able to control the operation of the communications card without fil, selon un programme ou pilote, selectionne dans une liste predeterminee.  thread, according to a program or pilot, selected from a predetermined list. 4. Appareil de test selon la revendication 3, caracterise en ce qu'il comporte des  4. Test apparatus according to claim 3, characterized in that it comprises moyens de mise a jour de la liste predeterminee de pilotes.  means of updating the predetermined list of pilots. 5. Appareil de test selon la revendication l, caracterise en ce qu'il comporte des moyens d'enregistrement et d'informations relatives aux signaux emis et/ou re,cu a  5. Test apparatus according to claim l, characterized in that it comprises recording and information means relating to the signals emitted and / or re, cu a 2s destination et/ou en provenance du point d'acces (2) au reseau.  2s destination and / or from the point of access (2) to the network. 6. Appareil de test selon la revendication 1, caracterise en ce qu'il comporte des moyens de transfert (21) a destination de ltordinateur des informations relatives aux  6. Test apparatus according to claim 1, characterized in that it includes transfer means (21) to the computer for information relating to signaux emis et/ou re,cu a destination et/ou en provenance du point d'acces au reseau.  signals sent and / or re, cu to and / or from the point of access to the network. 7. Appareil de test selon la revendication 1, caracterise en ce que les moyens de traitement vent apses a emettre des paquets de donnees ou frames selon un protocole  7. Test apparatus according to claim 1, characterized in that the processing means are quick to send data packets or frames according to a protocol. compatible avec ie reseau local sans fil..  compatible with the local wireless network. , .] -14  ,.] -14 8. Appareil de test selon la revendication 7, caracterisePen ce que les moyens de8. Test apparatus according to claim 7, caracterisePen that the means of traitement vent apses a emettre des frames de longueurs differentes.  wind processing apt to emit frames of different lengths. 9. Appareil de test scion la revendication 8, caracterise en ce que la longueur des frames est configurables par l'utilisateur.  9. Test apparatus according to claim 8, characterized in that the length of the frames is configurable by the user. 10. Appareil de test scion la revendication 9, caracterise en ce que le temps d'emission10. Test apparatus according to claim 9, characterized in that the emission time des frames est configurable par l'utilisateur.  frames is user configurable. DEPOSANTS: Vincent FARGUE Florent PRAT MANDATAIRE: Cabinet LAURENT & CHARRAS i :t  DEPOSITORS: Vincent FARGUE Florent PRAT AGENT: LAURENT & CHARRAS Cabinet i: t
FR0206617A 2002-05-30 2002-05-30 WIRELESS LOCAL AREA TEST APPARATUS Expired - Fee Related FR2840481B1 (en)

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FR0206617A FR2840481B1 (en) 2002-05-30 2002-05-30 WIRELESS LOCAL AREA TEST APPARATUS
PCT/FR2003/001597 WO2003103219A1 (en) 2002-05-30 2003-05-27 Wireless local access network test device
AU2003251107A AU2003251107A1 (en) 2002-05-30 2003-05-27 Wireless local access network test device
EP03756010A EP1510040A1 (en) 2002-05-30 2003-05-27 Wireless local access network test device
US10/995,680 US20050101257A1 (en) 2002-05-30 2004-11-23 Wireless local area network test device

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Citations (1)

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US20010041566A1 (en) * 2000-03-20 2001-11-15 James Xanthos Bitwise monitoring of network performance

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
US20010041566A1 (en) * 2000-03-20 2001-11-15 James Xanthos Bitwise monitoring of network performance

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AU2003251107A1 (en) 2003-12-19
FR2840481B1 (en) 2004-07-16
WO2003103219A1 (en) 2003-12-11

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