WO2007073708A1 - Procede pour commander l'etablissement d'une liaison de communication vocale - Google Patents

Procede pour commander l'etablissement d'une liaison de communication vocale Download PDF

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Publication number
WO2007073708A1
WO2007073708A1 PCT/DE2005/002330 DE2005002330W WO2007073708A1 WO 2007073708 A1 WO2007073708 A1 WO 2007073708A1 DE 2005002330 W DE2005002330 W DE 2005002330W WO 2007073708 A1 WO2007073708 A1 WO 2007073708A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication network
switched
packet
circuit
communication
Prior art date
Application number
PCT/DE2005/002330
Other languages
German (de)
English (en)
Inventor
Uwe Föll
Gerald Görmer
Original Assignee
Nokia Siemens Networks Gmbh & Co. Kg
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 Nokia Siemens Networks Gmbh & Co. Kg filed Critical Nokia Siemens Networks Gmbh & Co. Kg
Priority to PCT/DE2005/002330 priority Critical patent/WO2007073708A1/fr
Priority to DE112005003833T priority patent/DE112005003833A5/de
Publication of WO2007073708A1 publication Critical patent/WO2007073708A1/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
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • 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
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications

Definitions

  • the invention relates to a method for controlling the structure of a voice communication connection between a first communication terminal and a second communication terminal.
  • packet-switched communication networks for example in mobile radio networks according to the GPRS standard
  • data transmission to communication terminals is carried out by means of data packets (for example IP packets).
  • data packets for example IP packets
  • voice data can be transmitted between the communication terminals via the packet-switched communications network;
  • IP telephony or as "voice-over-IP”.
  • voice transmission quality in this packet-based voice data transmission is often unsatisfactory; For example, it depends heavily on the current network load of the packet-switched communication network.
  • the voice data to be transmitted by means of data packets has a considerable amount of data, so that the resources of the packet-switched communication network are considerably burdened and, if necessary, a cost-intensive expansion of the network infrastructure may become necessary.
  • the invention has for its object to specify a method with which the construction of a resource-saving voice-communication connection can be controlled.
  • This object is achieved according to the invention by a method for controlling the structure of a voice communication connection. between a first communication terminal and a second communication terminal, wherein a data transmission to the first communication terminal is carried out by means of data packets via a packet-switched communication network, wherein in the method when a voice communication connection connection request of a control unit of the packet-switched communication network occurrence of a circuit-switched communication network-related connection setup message is sent, whereby the circuit-switched communication network is caused to establish the voice communication connection between the first communication terminal and the second communication terminal.
  • this method can be used when the first communication terminal, for example, uses a communication service of the packet-switched communication network and therefore the data transmission to the first communication terminal via data packets over the packet-switched communication network is performed.
  • Circuit switched communication networks are also called "circuit switched w - Kommuni- cation networks designated;
  • An example of a circuit-switched communication network is the GSM mobile radio network.
  • the method can be configured such that the connection setup message is sent to a gateway which connects the packet-switched communication network and the circuit-switched communication network, and from the gateway a connection message is sent to a control unit of the circuit-switched communication network.
  • This control unit of the circuit-switched communication network then independently controls the structure of the
  • control unit of the packet-switched communication network is not burdened with the details of the control of the connection establishment.
  • the control unit of the circuit-switched communication network can advantageously communicate as needed with the control unit of the packet-switched communication network; For example, additional information can be transmitted to establish a connection.
  • the method can proceed in such a way that with the connection setup message the information is transmitted that no charge recording for the voice-communication connection is to be made in the circuit-switched communication network, whereby the billing in the circuit-switched communication network is suppressed.
  • the method can proceed in such a way that the control unit of the packet-switched communication network charges the voice-communication connection.
  • the method may be configured such that the packet-switched communication network is managed by a first network operator and the circuit-switched communication network is managed by a second network operator. This enables cooperation of communication networks managed by different network operators to establish the voice-communication connection.
  • control unit of the packet-switched communication network can be realized by means of an IP Multimedia Subsystem (IMS).
  • IMS IP Multimedia Subsystem
  • the method can also be designed so that an OSA gateway is used as the gateway.
  • an OSA gateway is advantageously a communication between the Control unit of the packet-switched communication network and the control unit of the circuit-switched communication network allows.
  • the method can also run such that the packet-switched communication network is informed by the circuit-switched communication network if the first communication terminal or the second communication terminal is not in the reception area of the circuit-switched communication network, and then from the packet-switched communication network a voice communication connection between the first communication terminal and the second communication terminal is established by means of data packets.
  • This makes it possible to set up the voice-communication connection even if the voice-communication connection can not be established by means of the circuit-switched communication network.
  • a packet-switched communication network KNl is shown, which is a so-called “packet switched domain” PS (packet-switched domain) and an "IP
  • CSCF call state control function
  • SCSCF serving call state control function
  • PCSCF proxy call state control function
  • the "X” in "XCSCF” is therefore a placeholder for eg the letters "S" or "P.”
  • a first communication terminal KEG1 is connected to the packet-switched communication network KN1 via a data path DP.
  • the data transmission between the first communication terminal KEG1 and the packet-switched communication network KN1 takes place here by means of data packets D.
  • a second communication terminal KEG2 is shown, which likewise is connected to the packet-switched communication network KN1 via a data path DP.
  • the communication between the packet-switched communication network KNl and the second communication terminal KEG2 is carried out with data packets D.
  • the first communication terminal KEG1 and the second communication terminal KEG2 are in the exemplary embodiment mobile telephones which are operated both in packet-oriented communication networks (such as GPRS mobile radio networks) and in circuit-switched communication networks (such as GSM mobile networks) can.
  • communication terminals may also be e.g. portable computers, laptops or palmtops can be used with mobile interface.
  • a circuit-switched communication network KN2 which comprises a so-called “switched-switched domain" CS and a control unit CSE
  • the control unit of the circuit-switched communication network is represented by a unit “CAMEL service environment” (FIG. CSE) realized.
  • CAMEL service environment FIG. CSE
  • SCP service control point
  • SSF service switching function
  • the circuit-switched communication network is a GSM mobile radio network
  • the "service switching function" SSF is occasionally also referred to as "global system for mobile communications service switching function” (gsmSSF).
  • Such switching centers with a service switching function are also referred to as a service switching point SSP (service switching point).
  • the packet-switched communication network KN1 is managed by a first network operator (operator 1); the circuit-switched communication network KN2 is managed by a second network operator (operator 2).
  • the control unit XCSCF of the packet-switched communication network and the control unit CSE of the circuit-switched communication network are connected by a gateway GW (connection node), which in the embodiment is designed as an OSA gateway.
  • a gateway GW connection node
  • OSA gateway ⁇ If it is a gateway, which is designed according to the specifications of the "open sys- tems architecture OSA".
  • a gateway is a connection node which connects various communication networks with each other.
  • the packet switch XGSN, the control unit XCSCF of packet-switched communication network, the gateway GW, the control unit CSE of the circuit-switched communication network, the center MSC and the communication terminals KEGl and KEG2 are interconnected by signaling channels S.
  • the first communication terminal KEG1 and the second communication terminal KEG2 jointly use a service of the packet-switched communication network KN1 (eg a multimedia service controlled by the "IP Multimedia Subsystem" IMS) During this service, data in the form of data packets D between the two communication terminals For example, during the execution of this packet-oriented data transmission service, the desire may arise to set up a voice communication connection between the first communication terminal KEG1 and the second communication terminal KEG 2.
  • a service of the packet-switched communication network KN1 eg a multimedia service controlled by the "IP Multimedia Subsystem" IMS
  • connection request message N1 is transmitted from the first communication terminal KEG1 to the control unit XCSCF of the packet-switched communication network
  • Dungsfflenachricht Nl can be configured for example as a SIP message "Invite”.
  • the connection establishment request can also arise independently of the communication terminal KEG1, for example, it is possible to start setting up a voice-communication connection during the course of the data transmission service by the control unit XCSCF.
  • the control unit XCSCF of the packet-switched communication network KN1 then transmits the circuit-switched one
  • connection setup message N3 is transmitted to the gateway GW.
  • the connection setup message N3 contains the information that a voice communication connection between the first communication terminal KEG1 and the second communication terminal KEG2 is to be established by the circuit-switched communication network KN2.
  • the gateway GW then sends this information by means of a connection message N4 to the control unit CSE of the circuit-switched communication network KN2.
  • control unit CSE of the circuit-switched communication network causes one or more messages N5 to the switching center MSC by means of one or more messages that the voice communication connection between the first communication terminal KEG1 and the second communication terminal KEG2 is established.
  • message N5 for example, the CAP message "Initiate Call Attempt" can be used.
  • the exchange MSC sets up the voice communication connection KV (voice channel KV), this voice communication connection connecting the first communication terminal KEG1 via the exchange MSC of the circuit-switched communication network KN2 to the second communication terminal KEG2.
  • the packet-oriented communication connection packet-communication connection, eg a data-communication connection
  • the voice communication connection KV exists between the first communication terminal KEG1 and the second communication terminal KEG2 via the switching center MSC of the circuit-switched communication network KN2.
  • the circuit-switched communication network KN2 Should the circuit-switched communication network KN2 not be able to establish the voice-communication connection between the first communication terminal KEG1 and the second communication terminal KEG2 (for example because the first communication terminal KEG1 or the second communication terminal KEG2 is not in the reception area of the circuit-switched communication network KN2), then this is signaled, for example, by means of the message "EventReportBCSM w from the service switching function SSF of the exchange MSC to the control unit CSE. Then, the control unit CSE of the circuit-switched communication network KN2 sends an information message N6 to the gateway GW; The gateway GW then sends a corresponding information message N7 to the control unit XCSCF of the packet-switched communication network.
  • the control unit XCSCF of the packet-switched communication network KN1 then causes the packet-based voice data transmission between the first communication terminal KEG1 and the second communication terminal KEG2 to be established via the packet-switched communication network KN1. This is done z. B. by means known as such mechanisms of voice over IP data transmission.
  • connection setup message N3 may contain the information that in the circuit-switched communication network KN2 no billing for the voice communication KV communication is to be made. Corresponding information is then also transmitted with the connection message N4 to the control unit CSE of the circuit-switched communication network KN2.
  • the control unit CSE additionally sends a CAP message "send charging information" to the switching center MSC in addition to the CAP message "initiate ⁇ all attempt" N5.
  • the switching center MSC is instructed not to charge for the voice communication connection KV in the circuit-switched communication network KN 2.
  • the exchange MSC is thus instructed, for example, no so-called” charge tickets "for the
  • the control unit CSE of the circuit-switched communication network KN2 informs the control unit XCSCF of the packet-switched communication network KN1 about the beginning and end of the voice communication connection KV. Thereupon, the control unit XCSCF or another unit of the packet-switched communication network KN1 detects the charges occurring for this communication connection KV and, for example, charges them to the communication terminal KEG1 or its user. In the packet-switched
  • both the charges for the packet-switched data transmission D between the first communication terminal KEG1 and the second communication terminal KEG2 and the charges for the circuit-switched voice communication connection KV are detected and / or accounted for.
  • This realizes a uniform, service-related or joint fee determination for all data transmissions or communication connections occurring during the service;
  • the fees for the packet-switched data transmission D and the charges for the circuit-switched voice communication connection KV can be billed jointly via an invoice or debited jointly from an account.
  • necessary data can be detected in the gateway or in the circuit-switched communication network. These data may be collected on a per-subscriber basis (fees per subscriber) or operator-related (charges per operator).
  • control unit XCSCF sends a connection release message N10 to the gateway GW, and the gateway GW sends a corresponding message NI1 to the control unit CSE.
  • control unit CSE instructs the exchange MSC by means of a message N12 to reduce the communication connection KV between the communication terminals KEG1 and KEG2.
  • message N12 for example, the CAP message
  • the communication connection KV can also be terminated by the first communication terminal KEG1 or by the second communication terminal KEG2.
  • the control unit CSE of the circuit-switched communication network KN2 also informs the control unit CSCF of the packet-switched communication network KN1 of such a termination of the communication connection KV by corresponding messages via the gateway GW are sent to the control unit CSCF (not shown in the figure).
  • communication terminals are used which simultaneously use a packet-switched connection via the packet-switched communication network KN1 and a circuit-switched connection via establish and maintain the circuit-switched communication network KN2. This requirement is fulfilled, for example, by the majority of modern mobile phones.
  • a method has been described with which advantageously parallel to an existing packet-oriented data transmission between two communication terminals via a packet-switched communication network additionally a voice communication connection between these Kilunikationsendge- rates over a circuit-switched communication network is constructed or this structure is controlled. It is made possible for the voice communication connection to take advantage of the time-switched communication networks optimized for voice services or voice transmission. Such advantages are, in particular, the high transmission quality, the very efficient use of resources and the resulting (compared to packet-switched communication networks) low network load on circuit-switched communication networks.
  • the control unit of the packet-switched communication network sends a connection setup message to the circuit-switched communication network; then the circuit-switched communication network establishes the voice communication connection between the communication terminals.

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

Abstract

La présente invention concerne un procédé pour commander l'établissement d'une liaison de communication vocale (KV) entre un premier terminal de communication (KEG1) et un second terminal de communication (KEG2), la transmission de données au premier terminal de communication sous la forme de paquets de données (D), s'effectuant au moyen d'un réseau de communication à commutation de paquets (KN1). Dans ce procédé, à l'apparition d'une demande d'établissement de liaison (N1) concernant la liaison de communication vocale, un message d'établissement de liaison (N3) concernant un réseau de communication à commutation de circuit (KN2), est envoyé par une unité de commande (XCSCF) du réseau de communication à commutation de paquets (KN1). Cela amène le réseau de communication à commutation de circuit (KN2) à établir la liaison de communication vocale (KV) entre le premier terminal de communication (KEG1) et le second terminal de communication (KEG2).
PCT/DE2005/002330 2005-12-27 2005-12-27 Procede pour commander l'etablissement d'une liaison de communication vocale WO2007073708A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/DE2005/002330 WO2007073708A1 (fr) 2005-12-27 2005-12-27 Procede pour commander l'etablissement d'une liaison de communication vocale
DE112005003833T DE112005003833A5 (de) 2005-12-27 2005-12-27 Verfahren zur Steuerung des Aufbaus einer Sprachkommunikationsverbindung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2005/002330 WO2007073708A1 (fr) 2005-12-27 2005-12-27 Procede pour commander l'etablissement d'une liaison de communication vocale

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111817950A (zh) * 2020-07-02 2020-10-23 深圳金智凌轩视讯技术有限公司 通过声音进行交互的网关设备

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EP1370056A1 (fr) * 2002-06-03 2003-12-10 Alcatel Système de télécommunication avec transfer d'une session multimedia en mode packet à une connexion en mode circuit
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US20050083909A1 (en) * 2003-10-17 2005-04-21 Jarmo Kuusinen System, apparatus, and method for establishing circuit-switched communications via packet-switched network signaling

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Publication number Priority date Publication date Assignee Title
US20030026245A1 (en) * 2001-07-31 2003-02-06 Ejzak Richard Paul Communication system including an interworking mobile switching center for call termination
EP1370056A1 (fr) * 2002-06-03 2003-12-10 Alcatel Système de télécommunication avec transfer d'une session multimedia en mode packet à une connexion en mode circuit
US20050025047A1 (en) * 2003-07-30 2005-02-03 Nortel Networks Limited Providing packet-based multimedia services via a circuit bearer
US20050083909A1 (en) * 2003-10-17 2005-04-21 Jarmo Kuusinen System, apparatus, and method for establishing circuit-switched communications via packet-switched network signaling

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111817950A (zh) * 2020-07-02 2020-10-23 深圳金智凌轩视讯技术有限公司 通过声音进行交互的网关设备

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