WO2009136823A1 - Terminal et procédé permettant au terminal d'atteindre un autre terminal - Google Patents

Terminal et procédé permettant au terminal d'atteindre un autre terminal Download PDF

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Publication number
WO2009136823A1
WO2009136823A1 PCT/SE2008/050509 SE2008050509W WO2009136823A1 WO 2009136823 A1 WO2009136823 A1 WO 2009136823A1 SE 2008050509 W SE2008050509 W SE 2008050509W WO 2009136823 A1 WO2009136823 A1 WO 2009136823A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
information
call
user
retrying
Prior art date
Application number
PCT/SE2008/050509
Other languages
English (en)
Inventor
Ulf Olsson
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ.)
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 Telefonaktiebolaget Lm Ericsson (Publ.) filed Critical Telefonaktiebolaget Lm Ericsson (Publ.)
Priority to PCT/SE2008/050509 priority Critical patent/WO2009136823A1/fr
Publication of WO2009136823A1 publication Critical patent/WO2009136823A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1083—In-session procedures
    • H04L65/1094—Inter-user-equipment sessions transfer or sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1096—Supplementary features, e.g. call forwarding or call holding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/54—Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4547—Network directories; Name-to-address mapping for personal communications, i.e. using a personal identifier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management

Definitions

  • Today terminals can make use of a great number of communication and networking services implemented in a network.
  • An example of such a service is call forwarding.
  • This service enables redirection of a caller terminal such as a mobile phone, a wireless terminal, a laptop, a personal digital assistant (PDA), a voice over internet protocol (VoIP) capable telephone, to backup alternatives if a called terminal cannot be reached.
  • the called terminal can configure the service by e.g. defining rules to forward or redirect an incoming call to e.g. a voice mail box or to a voice recorder etc.
  • Call forwarding typically requires network-side implementation of application logic.
  • EP 1492 318 describes an example of network-side implementation in terms of a communication exchanger which memorizes a presence state table for all users and a forwarding destination table for each of the users.
  • the presence state table presence information of all users is registered.
  • the forwarding destination table forwarding destination information classified by each presence of the user is registered.
  • the exchange retrieves the presence information of the corresponding user from the presence state table.
  • the exchanger also retrieves the forwarding destination information according to the presence information from the table to forward the call.
  • a drawback with the solution provided in the above prior art document is, that it necessitates a network-side implementation of the communication exchanger which is usually handled by the operator of the network.
  • the size of the presence information also scales with the number of users registered in the exchanger.
  • the above stated problem is solved by means of a method for enabling a first terminal to reach another terminal.
  • the method aimed to be performed by the first terminal comprises: subscribing to receive presence information of the second terminal, from an information server associated with the second terminal; receiving from the information server, a presence information update.
  • the updated information indicating an information published by the second terminal in the information server.
  • the method further comprises, initiating a call towards the second terminal and retrying the call towards an address indicated in the information published by the second terminal, upon failure to reach a user of the second terminal.
  • Figure 1 is a diagram illustrating an exemplary communications system wherein the different exemplary embodiments of the presence invention can be implemented.
  • FIG. 2 illustrates signalling messages according to an embodiment of the present invention.
  • Figure 3 illustrates a flowchart of a method according to exemplary embodiments of the present invention.
  • the voice mail server 150 can be anything that a call can be legitimately referred to, such as an IVR box (interactive voice response); a colleague, a corporate switch board and so on. It should also be noted that the voice mail server 150 does not necessarily belong to the operator of the network and/or the operator of the registrar and/or the operator of the presence server. Note also that the communication system 100 depicted in figure 1 may include other components such as proxy servers, redirect servers etc.. which are not considered relevant for the present invention. Referring to figure 2 there is illustrated signalling messages which, according to an embodiment of the present invention, are used for enabling a first terminal 210, denoted here UEA, to reach another terminal 220 denoted here UEB.
  • UEA first terminal 210
  • UEB another terminal 220
  • a REGISTER request message is sent to SIP registrar SRA 211.
  • the REGISTER message includes the identification of the user agent in UEA 210; the address (usually an IP address) of user agent client of UEA 210; the lifetime registration of the registration and additional parameter specific to processing the request.
  • UEA 210 then waits for a confirmation from SRA 211 in the form of a OK message 200.
  • a subscription message denoted SUBSCRIBE message is sent to SRB 221 via SRA 211.
  • UEB 220 In order for terminal UEB 220 to allow terminal UEA 210 to receive presence information, UEB 220 also needs to register in SRB 221 by sending a REGISTER message to SRB 221. UEB 220 then receives a confirmation message (OK message) from SRB 221. Whenever the presence information status of UEB 220 changes, the publishing user which in this case is the user of UEB 220, may inform/provide the information server i.e. the presence server PSB 222 with a presence information update indicating where to forward a incoming call.
  • This information can be provided by the user of UEB through a variety of means such as for example a PC based web browser, instant messaging, short message service (SMS), multimedia message (MMS) or any other suitable means.
  • the presence information may for example indicate the address of the voice mail box VMB 223 wherein UEB 220 has registered a message.
  • the published information (PUBLISH) that is provided to the information server, acting as a PSB 222, thus indicates alternative reachibility/availability address(s).
  • UEA 210 when the user of UEA 210 initiates a call towards UEB 220, it first sends an INVITE message to UEB 220 via registrar SRA 211 and registrar 221. Upon failure to reach the user of UEB 220 i.e.
  • the address relates to the address of the voice mail box 223.
  • UEA 210 sends an INVITE message to the voice mail box 223 via SRA 211 and SRB 221.
  • the voice mail box 223 replies to UEA 210 by sending a OK message followed by UEA 210 completing the initiation sequence with an acknowledgment message (ACK message).
  • ACK message acknowledgment message
  • UEA 210 can place/leave a message in the voice mail box 223 associated with UEB 220.
  • the procedure is then terminated by the UEA 210 sending a BYE message and the voice mail box 223 responding with a OK message 200.
  • the present invention reduces the load of the network to a SIP registrar (or SIP registrars) and a presence server(s) since most of the procedures needed io enable a. calling party to reach a called party in case the called party publishes backup alternatives, can be implemented in the end-users.
  • SIP registrars; and presence server? s can be implemented as a distributed database using for example peer-lo-peer technology.
  • one embodiment of the present invention includes a computer-readable medium having a computer program with instructions stored thereon that are executable by a terminal e.g. a user equipment of a telecommunications system.
  • the instructions executable by the terminal and stored on a computer-readable medium perform the method steps of the present invention as set forth in the claims.
  • the computer program can, according to the present invention, e.g. be implemented on top of or together with existing SIP application program interface's (API) as downloadable client(s) such as JavaME clients.
  • API application program interface's
  • the present invention and its different exemplary embodiments can be implemented in any terminal such as mobile phones, wireless terminals, laptops, personal computers, personal digital assistants (PDA), voice over internet protocol (VoIP) capable telephones etc.
  • PDA personal digital assistants
  • VoIP voice over internet protocol

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)

Abstract

La présente invention porte sur un terminal (210) et sur un procédé permettant au terminal (210) d'atteindre un autre terminal (220). Le terminal (210) selon la présente invention comprend des moyens pour s'abonner à la réception d'informations de présence de l'autre terminal (220); des moyens pour recevoir une mise à jour d'informations de présence indiquant des informations publiées par l'autre terminal (220); des moyens pour lancer un appel ou ouvrir une session vers l'autre terminal; et des moyens pour réessayer l'appel/la session vers une adresse indiquée dans les informations de présence, suite à un échec d'atteinte de l'autre terminal (220).
PCT/SE2008/050509 2008-05-05 2008-05-05 Terminal et procédé permettant au terminal d'atteindre un autre terminal WO2009136823A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2008/050509 WO2009136823A1 (fr) 2008-05-05 2008-05-05 Terminal et procédé permettant au terminal d'atteindre un autre terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2008/050509 WO2009136823A1 (fr) 2008-05-05 2008-05-05 Terminal et procédé permettant au terminal d'atteindre un autre terminal

Publications (1)

Publication Number Publication Date
WO2009136823A1 true WO2009136823A1 (fr) 2009-11-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2008/050509 WO2009136823A1 (fr) 2008-05-05 2008-05-05 Terminal et procédé permettant au terminal d'atteindre un autre terminal

Country Status (1)

Country Link
WO (1) WO2009136823A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111107232A (zh) * 2018-10-26 2020-05-05 东芝泰格有限公司 信息处理装置及信息处理方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999033199A1 (fr) * 1997-12-19 1999-07-01 Telefonaktiebolaget Lm Ericsson (Publ) Procede et dispositif d'un reseau de communication
US20050108550A1 (en) * 2001-12-27 2005-05-19 Rudolf Stelzl Method for administering presence information in a telecommunication and/or data network
US20060093116A1 (en) * 2004-11-02 2006-05-04 Baird Randall B Method and system for providing a camp-on service in telecommunications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999033199A1 (fr) * 1997-12-19 1999-07-01 Telefonaktiebolaget Lm Ericsson (Publ) Procede et dispositif d'un reseau de communication
US20050108550A1 (en) * 2001-12-27 2005-05-19 Rudolf Stelzl Method for administering presence information in a telecommunication and/or data network
US20060093116A1 (en) * 2004-11-02 2006-05-04 Baird Randall B Method and system for providing a camp-on service in telecommunications

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
JIANG ET AL: "Personalization of internet telephony services for presence with SIP and extended CPL", COMPUTER COMMUNICATIONS, ELSEVIER SCIENCE PUBLISHERS BV, AMSTERDAM, NL, vol. 29, no. 18, 18 November 2006 (2006-11-18), pages 3766 - 3779, XP005773010, ISSN: 0140-3664 *
NIKOLAOS ANEROUSIS ET AL: "TOPS: An Architecture for Telephony over Packet Networks", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, IEEE SERVICE CENTER, PISCATAWAY, US, vol. 17, no. 1, 1 January 1999 (1999-01-01), XP011054890, ISSN: 0733-8716 *
SCHULZRINNE COLUMBIA U H: "Timed Presence Extensions to the Presence Information Data Format (PIDF) to Indicate Status Information for Past and Future Time Intervals; rfc4481.txt", IETF STANDARD, INTERNET ENGINEERING TASK FORCE, IETF, CH, 1 July 2006 (2006-07-01), XP015054988, ISSN: 0000-0003 *
SUGANO S FUJIMOTO FUJITSU G KLYNE NINE BY NINE A BATEMAN VISIONTECH W CARR INTEL J PETERSON NEUSTAR H: "Presence Information Data Format (PIDF); rfc3863.txt", IETF STANDARD, INTERNET ENGINEERING TASK FORCE, IETF, CH, 1 August 2004 (2004-08-01), XP015009641, ISSN: 0000-0003 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111107232A (zh) * 2018-10-26 2020-05-05 东芝泰格有限公司 信息处理装置及信息处理方法

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