WO2001003379A1 - Reseau de transmission de donnees sans fil, et son procede de gestion - Google Patents

Reseau de transmission de donnees sans fil, et son procede de gestion Download PDF

Info

Publication number
WO2001003379A1
WO2001003379A1 PCT/DE2000/002160 DE0002160W WO0103379A1 WO 2001003379 A1 WO2001003379 A1 WO 2001003379A1 DE 0002160 W DE0002160 W DE 0002160W WO 0103379 A1 WO0103379 A1 WO 0103379A1
Authority
WO
WIPO (PCT)
Prior art keywords
master
slaves
slave
network
transmission quality
Prior art date
Application number
PCT/DE2000/002160
Other languages
German (de)
English (en)
Inventor
Uwe Schwark
Edgar Bolinth
Ralf Kern
Original Assignee
Siemens Aktiengesellschaft
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
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to AU65556/00A priority Critical patent/AU6555600A/en
Publication of WO2001003379A1 publication Critical patent/WO2001003379A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Master-slave selection or change arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5671—Support of voice

Definitions

  • the present invention relates to a data transmission network with wireless transmission between a plurality of devices or nodes which are set up to operate either as a master or slave in the network.
  • ad hoc LANs In cordless communication systems with the ability to establish a network without prior configuration, so-called ad hoc LANs, such bifunctionality of the nodes is common.
  • a node or device takes over the function of the master, which controls essential tasks such as the timing of the entire network.
  • the master can maintain a connection to more than one slave at the same time; however, data transmission within such a network is only possible between the master and one of the slaves, but never directly between individual slaves.
  • the master role is usually taken over by the device that initiates the connection establishment between the individual devices or nodes, that is, the network establishment.
  • the data traffic breaks down and only starts again if the remaining slaves are able to agree on a new master. This necessarily leads to an interruption in the data transmission and possibly also to data loss.
  • the object of the invention is to specify a network and a method for its administration, which enable the network to continue to operate smoothly even if individual nodes leave the network.
  • the problem is solved on the one hand by a data transmission network of the type defined at the outset, in which the node of the network which works as a master is able to issue a command to a slave to take over the master function.
  • This evaluation is preferably carried out by selecting each slave in turn and evaluating the transmission quality between it and the remaining slaves on the basis of the transmission of a test data packet.
  • This process is preferably triggered centrally by the master sending a request to send the test data packet to the remaining slaves and then the remaining slaves sending the received test data packet to the selected slave.
  • the master sending a request to send the test data packet to the remaining slaves and then the remaining slaves sending the received test data packet to the selected slave.
  • a time offset is expediently assigned to each of the remaining slaves, after the elapse of which it should begin to send the test data packet.
  • the selected slave expediently carries out the evaluation of the connections between it and the rest of the slaves and only transfers the results of this evaluation to the master.
  • connection quality of a selected slave can be evaluated on the basis of the signal strength with which a test data packet is received or on the basis of the error rate of the test data packet.
  • an overall assessment of all connections between it and the other slaves is also advisable. This can have, for example, the variance of the transmission quality of the individual connections between the selected slave and the remaining slaves and / or the number of remaining slaves whose transmission quality to the selected slave is inadequate.
  • FIG. 1 shows a Bluetooth piconet as an example of a data transmission network with wireless transmission according to the present invention
  • FIG 2 shows the sequence of a signaling protocol which is processed by the nodes of the network from FIG to determine the most suitable successor for the master among the slaves of the network.
  • FIG. 1 schematically shows a Bluetooth network according to the invention with four devices, a master 0 and three slaves 1, 2, 3, which can each communicate with the master 0 via radio connections 4. Further radio connections, here the connections 5 and 6 shown in dashed lines are physically possible, but are not used as long as the device 0 holds the master role.
  • the master and the slaves can be, for example, a microcomputer, a printer, a scanner and a modem, which are each equipped with suitable interfaces, or can also be a control system for a heating system or other electrical devices.
  • Each slave can be addressed within the network via a so-called active member address AM_ADDR or MAC address, which is shown in brackets in binary form on each slave in the figure.
  • the method according to the invention with which a successor for master 0 can be determined from slaves 1, 2, 3, is described with reference to FIG. 2.
  • the figure comprises four lines, which are designated by 0 to 3 and each represent send and receive activity of master 0 or slaves 1, 2, 3.
  • the master 0 sends the slave 1 a request to temporarily take over the function of the master. This request is also received by the other slaves 2, 3.
  • the temporary transfer of the master function to the selected slave 1 means for the remaining slaves 2, 3 that they have to send out a predetermined test data packet. This happens in phase 12.
  • the order in which the test data packet is sent also depends on the addresses of the slaves.
  • the selected slave 1 After the selected slave 1 (on the radio connections 5) has received all expected test data packets, in phase 13 it sends a request to master 0 to take over the master role again. This request is also received by the remaining slaves 2, 3.
  • phase 14 devices 0, 2 and 3 send confirmations to device 1 giving the master role, just like in phase 11, and device 0 again takes on its role as master, which was temporarily given in phases 12 and 13.
  • the selected slave 1 evaluates the test data packets received from the remaining slaves 2, 3 and transmits its evaluation of the transmission quality to the master 0 in phase 15.
  • the criteria used for evaluating the transmission quality can, depending on the application environment and the configuration of the Air interfaces of the devices used vary.
  • the signal level of the test data packet received by the selected slave can be measured directly and used as a criterion for the quality of the transmission of a single radio connection. It is also possible to use a test data packet with a given content, the selected slave 1 then being able to assess the transmission quality on the basis of a received test data packet with the given content.
  • the transmission quality of the individual connections 5 is only a partial aspect when assessing the suitability of a slave as successor to the master.
  • a slave can have good connections to other slaves on average, but it can still be unsuitable if it is unable to reach one or more slaves in the network or the transmission quality to such slaves is so poor that a large number of necessary repetitions are effective Network transfer rate affected. Therefore, the assessment of the transmission quality of the selected slave expediently also includes the variance of the transmission qualities of its individual connections, the transmission quality of the slave being rated the worse, the greater the variance. If the selected slave cannot reach some of the remaining slaves or can only reach them with poor connection quality, this also affects its evaluation.
  • the method shown in FIG. 2 for slave 1 is repeated in an analogous manner for all other slaves 2, 3 of the network.
  • the connection 6 between the slaves 2, 3, which was not used in the evaluation of the slave 1, is also checked.
  • the master 0 has the ratings of the transmission quality of all slaves and issues a command to take over the master function to the slave that has received the best rating.
  • device 0, which now has a slave role can be removed from the network without disrupting data traffic.
  • the method described above can be performed as part of a master 0 shutdown procedure when a user wants to turn off the master. It is also possible to carry out the process on a regular basis in a fully working network, so as to ensure that the master role is always cn

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un réseau de transmission de données qui comprend une pluralité de noeuds (0, 1, 2, 3) qui sont disposés pour fonctionner de façon sélective comme maître (0) ou esclave (1, 2, 3). Le maître (0) est en mesure de donner à un esclave qui garantit la meilleure qualité de transmission vis-à-vis des autres esclaves une instruction pour la prise en charge de la fonction de maître.
PCT/DE2000/002160 1999-07-01 2000-07-03 Reseau de transmission de donnees sans fil, et son procede de gestion WO2001003379A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU65556/00A AU6555600A (en) 1999-07-01 2000-07-03 Wireless data transmission network and method for the management of the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999130423 DE19930423A1 (de) 1999-07-01 1999-07-01 Schnurloses Datenübertragungsnetzwerk und Verfahren zu seiner Verwaltung
DE19930423.8 1999-07-01

Publications (1)

Publication Number Publication Date
WO2001003379A1 true WO2001003379A1 (fr) 2001-01-11

Family

ID=7913344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/002160 WO2001003379A1 (fr) 1999-07-01 2000-07-03 Reseau de transmission de donnees sans fil, et son procede de gestion

Country Status (3)

Country Link
AU (1) AU6555600A (fr)
DE (1) DE19930423A1 (fr)
WO (1) WO2001003379A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001065719A2 (fr) * 2000-03-02 2001-09-07 Koninklijke Philips Electronics N.V. Systeme special de communication radio
EP1176762A1 (fr) * 2000-07-25 2002-01-30 Samsung Electronics Co., Ltd. Procédé pour la gestion d'un réseau quand le maítre disparait
EP1223715A1 (fr) * 2001-01-05 2002-07-17 Samsung Electronics Co., Ltd. Commutation temporaire maitre-esclave dans un Piconet dans un système de communication Bluetooth
WO2002060133A2 (fr) * 2001-01-25 2002-08-01 Bandspeed, Inc. Technique de gestion de voies de communication sur la base de la qualite de transmission
WO2002060135A2 (fr) * 2001-01-25 2002-08-01 Bandspeed, Inc. Technique de transfert de fonctions entre participants dans un systeme de communication
WO2003007552A2 (fr) * 2001-07-13 2003-01-23 Universita' Degli Studi Di Roma 'la Sapienza' Procede d'election dynamique de l'ordinateur maitre parmi les ordinateurs ou les stations d'un reseau local de mobiles hertziens ou d'un reseau local hertzien
EP1324540A2 (fr) * 2001-12-28 2003-07-02 Kabushiki Kaisha Toshiba Dispositif de communication radio
WO2004109996A1 (fr) * 2003-06-02 2004-12-16 Matsushita Electric Industrial Co., Ltd. Dispositif, procede et programme permettant d'effectuer un processus de commutation maitre/esclave
US7222166B2 (en) 2001-01-25 2007-05-22 Bandspeed, Inc. Approach for managing communications channels based on performance and transferring functions between participants in a communications arrangement
EP1465373A3 (fr) * 2003-04-01 2008-04-16 Samsung Electronics Co., Ltd. Méthode de sélection d'un maitre pour système Bluetooth
US7477624B2 (en) 2001-01-25 2009-01-13 Bandspeed, Inc. Approach for managing the use of communications channels based on performance
WO2010014272A1 (fr) * 2008-08-01 2010-02-04 Bose Corporation Topologie fondée sur le comportement d'utilisateur d'un réseau sans fil personnel
CN101819709A (zh) * 2008-12-05 2010-09-01 能美防灾株式会社 报警系统及报警器
US7995964B2 (en) 2008-06-24 2011-08-09 Bose Corporation Personal wireless network capabilities-based task portion distribution
US8024596B2 (en) 2008-04-29 2011-09-20 Bose Corporation Personal wireless network power-based task distribution
EP2506653A1 (fr) * 2011-03-31 2012-10-03 Fujitsu Limited Dispositif de communication d'informations et procédé de lien

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026775A1 (de) * 2004-06-02 2006-01-12 Siemens Ag Verfahren zum Aufbau eines drahtlosen selbstorganisierenden Kommunikationsnetzwerkes, Sendeempfangsgerät und Basisstation eines drahtlosen selbstorganisierenden Kommunikationsnetzwerkes und drahtloses selbstorganisierendes Kommunikationsnetzwerk
FR2956940B1 (fr) * 2010-02-26 2013-10-04 Eads Defence & Security Sys Procede de gestion d'une cellule d'un reseau de radiotelecommunication

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784368A (en) * 1994-09-23 1998-07-21 Motorola, Inc. Method and apparatus for providing a synchronous communication environment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784368A (en) * 1994-09-23 1998-07-21 Motorola, Inc. Method and apparatus for providing a synchronous communication environment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JAMES KARDACH: "Bluetooth Architecture Overview", 18 March 1999 (1999-03-18), pages 1 - 45, XP002141146, Retrieved from the Internet <URL:<URL:http://grouper.ieee.org/Groups/802/11/Tutorial/90538S-WPAN-Bluetooth-Tutorial.pdf>> [retrieved on 19990626] *

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001065719A3 (fr) * 2000-03-02 2002-02-21 Koninkl Philips Electronics Nv Systeme special de communication radio
WO2001065719A2 (fr) * 2000-03-02 2001-09-07 Koninklijke Philips Electronics N.V. Systeme special de communication radio
US6980522B2 (en) 2000-03-02 2005-12-27 Koninklijke Philips Electronics N.V. Ad-hoc radio communication system
EP1176762A1 (fr) * 2000-07-25 2002-01-30 Samsung Electronics Co., Ltd. Procédé pour la gestion d'un réseau quand le maítre disparait
US7359950B2 (en) 2000-07-25 2008-04-15 Samsung Electronics Co., Ltd. Method for managing network when master disappears
US6907226B2 (en) 2001-01-05 2005-06-14 Samsung Electronics Co., Ltd. Wireless communication apparatus, wireless communication method thereof, and wireless communication system employing the same
EP1223715A1 (fr) * 2001-01-05 2002-07-17 Samsung Electronics Co., Ltd. Commutation temporaire maitre-esclave dans un Piconet dans un système de communication Bluetooth
WO2002060133A2 (fr) * 2001-01-25 2002-08-01 Bandspeed, Inc. Technique de gestion de voies de communication sur la base de la qualite de transmission
WO2002060135A3 (fr) * 2001-01-25 2003-02-27 Bandspeed Inc Technique de transfert de fonctions entre participants dans un systeme de communication
US9883520B2 (en) 2001-01-25 2018-01-30 Bandspeed, Inc. Approach for managing the use of communications channels based on performance
US9379769B2 (en) 2001-01-25 2016-06-28 Bandspeed, Inc. Approach for managing the use of communications channels based on performance
WO2002060133A3 (fr) * 2001-01-25 2003-02-27 Bandspeed Inc Technique de gestion de voies de communication sur la base de la qualite de transmission
WO2002060135A2 (fr) * 2001-01-25 2002-08-01 Bandspeed, Inc. Technique de transfert de fonctions entre participants dans un systeme de communication
US7477624B2 (en) 2001-01-25 2009-01-13 Bandspeed, Inc. Approach for managing the use of communications channels based on performance
US7222166B2 (en) 2001-01-25 2007-05-22 Bandspeed, Inc. Approach for managing communications channels based on performance and transferring functions between participants in a communications arrangement
WO2003007552A3 (fr) * 2001-07-13 2003-10-02 Univ Roma Procede d'election dynamique de l'ordinateur maitre parmi les ordinateurs ou les stations d'un reseau local de mobiles hertziens ou d'un reseau local hertzien
WO2003007552A2 (fr) * 2001-07-13 2003-01-23 Universita' Degli Studi Di Roma 'la Sapienza' Procede d'election dynamique de l'ordinateur maitre parmi les ordinateurs ou les stations d'un reseau local de mobiles hertziens ou d'un reseau local hertzien
EP1324540A3 (fr) * 2001-12-28 2006-05-10 Kabushiki Kaisha Toshiba Dispositif de communication radio
US7164887B2 (en) 2001-12-28 2007-01-16 Kabushiki Kaisha Toshiba Radio communication device
EP1324540A2 (fr) * 2001-12-28 2003-07-02 Kabushiki Kaisha Toshiba Dispositif de communication radio
US7613424B2 (en) 2003-04-01 2009-11-03 Samsung Electronics Co., Ltd. Method for performing bluetooth high rate supervisor handover
EP1465373A3 (fr) * 2003-04-01 2008-04-16 Samsung Electronics Co., Ltd. Méthode de sélection d'un maitre pour système Bluetooth
WO2004109996A1 (fr) * 2003-06-02 2004-12-16 Matsushita Electric Industrial Co., Ltd. Dispositif, procede et programme permettant d'effectuer un processus de commutation maitre/esclave
US8024596B2 (en) 2008-04-29 2011-09-20 Bose Corporation Personal wireless network power-based task distribution
US7995964B2 (en) 2008-06-24 2011-08-09 Bose Corporation Personal wireless network capabilities-based task portion distribution
WO2010014272A1 (fr) * 2008-08-01 2010-02-04 Bose Corporation Topologie fondée sur le comportement d'utilisateur d'un réseau sans fil personnel
US8090317B2 (en) 2008-08-01 2012-01-03 Bose Corporation Personal wireless network user behavior based topology
CN101819709B (zh) * 2008-12-05 2014-04-02 能美防灾株式会社 报警系统及报警器
CN101819709A (zh) * 2008-12-05 2010-09-01 能美防灾株式会社 报警系统及报警器
EP2506653A1 (fr) * 2011-03-31 2012-10-03 Fujitsu Limited Dispositif de communication d'informations et procédé de lien
US20120254022A1 (en) * 2011-03-31 2012-10-04 Fujitsu Limited Information communication device and link method

Also Published As

Publication number Publication date
AU6555600A (en) 2001-01-22
DE19930423A1 (de) 2001-01-18

Similar Documents

Publication Publication Date Title
WO2001003379A1 (fr) Reseau de transmission de donnees sans fil, et son procede de gestion
DE60210177T2 (de) Bandbreitenorientierte Neukonfigurierung von drahtlosen Ad-Hoc-Netzen
DE3685935T2 (de) Kommunikationssystem zur uebertragung kleiner digitaler nachrichtenbloecke und grosser digitaler nachrichtenbloecke.
EP2622826B1 (fr) Procédé d&#39;attribution automatique d&#39;adresse à des abonnés de bus de même type
DE60111153T2 (de) Funkkommunikationssystem mit Zeitüberschreitungssteuerung und flexible Intervalleinstellung
EP1881650B1 (fr) Procédé d&#39;établissement d&#39;un réseau de communication auto-organisé
DE112005002078T5 (de) Leistungsoptimierung eines drahtlosen Netzwerks auf unterschiedlichen Protokollschichten durch gleichzeitiges Anpassen von Kommunikationsparametern
DE60225934T2 (de) Verfahren und Vorrichtung für Funkverbindunganpassung
DE19752697A1 (de) Drahtloses lokales Netzwerk mit Controller und wenigstens einem als Controller einsetzbaren Terminal
EP1800457B1 (fr) Procede de determination d&#39;un abonne conducteur dans un reseau
EP1187397B1 (fr) Reconfiguration d&#39;un réseau ad hoc
DE69935271T2 (de) Verfahren, Gerät, und Steuergerät zur drahtlosen Kommunikation
DE60206780T2 (de) Netzwerkverbindungsvorrichtung, verbindungssystem und netzwerkverbindungsverfahren
DE60112219T2 (de) Mobilkommunikationssystem und verteiltes Rundfunkinformation-Steuerungsverfahren in einem Mobilkommunikationssystem
EP1779613B1 (fr) Configuration d&#39;un reseau sans fil avec determination et exploitation d&#39;informations de topologie locale
EP0749070B1 (fr) Méthode d&#39;alimentation décentralisé de bus et appareil de mise en oeuvre de la méthode
DE60307692T2 (de) Verfahren zur Beurteilung von Funkverbindungen in einem Kommunikationsnetz
EP3525476B1 (fr) Procede de determination de topologie d&#39;un site de communication mobile et un site de communication mobile correspondant
DE112017003386B4 (de) Kommunikationssystem und Kommunikationsverfahren
WO2001006824A1 (fr) Gestion econome en energie d&#39;un reseau de transmission de donnees
DE60317541T2 (de) Verfahren zur bestimmung eines übergeordneten portals in einem drahtlosen netzwerk und entsprechende portaleinrichtung
EP1582034B1 (fr) Procede et dispositif de communication pour elargir la plage de vitesses de transmission de donnees dans des reseaux sans fil
EP2478740B1 (fr) Partage d&#39;intervalle de temps
DE102007034794B4 (de) Verfahren zur Inbetriebnahme und zum Betrieb eines Funksystems
DE10044828C2 (de) Verfahren zur Steuerung der Auslastung eines lokalen Netzes und Vorrichtung zur Durchführung des Verfahrens

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR CA CN IN JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP