CN1728878B - Registration method of communication terminal device, communication system, method of controlling communication terminal device, and communication terminal device - Google Patents

Abstract

The present invention proposes a registration method of a communication terminal device, which is to transmit to the communication terminal device an acknowledgment message containing parameter values enabling the communication terminal device to utilize communication services.

Description

Registration method of communication terminal device, communication system, method of controlling communication terminal device, and communication terminal device

technical field

The present invention relates to a registration method of communication terminal equipment, a communication system, a method for controlling communication terminal equipment, and communication terminal equipment.

Background technique

The 3rd Generation Partnership Project (3GPP: 3rd Generation Partnership Project) has developed a standard for the construction method of the so-called Internet Protocol Multimedia Core Network Subsystem (IMS: Internet-Protokoll-Multimedia-Core network-Subsystem).

The IMS (that is, the IMS standard developed by 3GPP according to the requirements of the communication network) can provide various communication services based on the Internet communication protocol (IP).

These communication services include VoIP (Voice-over-Internet-Protocol), video telephony, and video conferencing, such as teleconferencing.

According to IMS, the data transmission of the communication service is based on the Internet communication protocol (Internet-Protocol). Therefore, communication services can be carried out via all packet-based communication systems, such as wireless local area network (W-LAN: Wireless-Local-Area-Network), integrated packet radio technology (GPRS: General Packet Radio Service), global mobile telecommunications System (UMTS: Universal Mobile Telecommunications System).

In particular, IMS can also provide access to many user-based applications for many types of communication services.

In order to utilize IMS services, that is to say communication services provided by IMS, eg with the IMS conferencing service defined in reference [1], a service client must know specific configuration data provided for such communication services.

The most typical (service) customer of a communication service is a communication terminal via which a user can utilize the communication service.

For example, a common communication terminal is a mobile radio user equipment, which can be connected to the IMS via a mobile radio communication network established according to the Universal Mobile Telecommunications System (UMTS: Universal Mobile Telecommunications System) standard.

An example of the configuration data required to utilize the communication service (that is, the data that the client must know in order to use the communication service) is "address", such as the SIPURI (SIP-Uniform Ressource Indicator: SIP Uniform Resource Locator) of the server providing the communication service or is the Internet Protocol address.

In some cases, the configuration data required for communication services will change over time, so it is usually not possible to inform the customer in advance of the required configuration data, for example, these required configuration data may be about the public area mobile network at that time (PLMN: Public Land Mobile Network) configuration data, that is to say configuration data about the mobile radio network used by the client to connect with the IMS.

The so-called "(service) configuration of the communication terminal" refers to the transmission of the configuration data required for the communication service to the communication terminal.

So far, the 3rd Generation Partnership Project (3GPP) has not defined a method of configuring a communication terminal device to utilize a communication service, especially a method of configuring a communication terminal device connected to an IMS.

Reference [2] proposes a registration method based on Session Initiation Protocol (SIP: Session Initiation Protocol) to notify the availability of communication services. When using this registration method, the user transmits specific information (subscription information) to the IMS via a communication terminal.

Before the designated information is transmitted to the IMS, the user and/or the communication terminal equipment must be registered in the IMS, that is to say, the registration procedures must be completed in the IMS. The user informs the IMS via this specified message which communication service he wants to know is currently available or not. At this time, a Presence/InstantMessaging Server (Presence/InstantMessaging Server) configured according to the IMS standard will be connected as the information server.

If a service provider (that is, a communication service provider) informs the Presence/Instant Messaging Server (Presence/Instant Messaging Server) that he currently has a (communication) service available, the user who is designated to use this communication service It will be notified that this communication service is currently available under the framework of "Presence-Service" (that is, under the framework of available services).

The above actions are accomplished via a "notification message". Similarly, the designated user will also be informed through the notification message that he can communicate with the service provider (also via that SIP URI (SIP-Uniform Ressource Indicator: SIP Uniform Resource Locator)) via that address (that is, via that SIP URI). is the corresponding server) to contact.

Reference [3] proposes a configuration service (that is, a method for service configuration), which is based on the same notification principle as the method proposed in reference [2]. However, this configuration service can provide other information besides the specified user address.

The method proposed in reference [4] is that a PIM: Presence and Instant Messaging (PIM: Presence and Instant Messaging) server transmits the identity confirmation information of a registered service provider to the user.

Reference [5] proposes a method for making user-specific configurations for user interfaces, such as operating surfaces. In this method, the user-specific configuration is read out from a database and the data read out are transmitted to a communication terminal.

Reference [6] and reference [7] propose a method for registering communication terminal equipment with IMS according to the IMS standard.

Reference [8] proposes methods for data transmission based on the SIP protocol. These methods transmit files containing the data to be transmitted via SIP messages.

Reference [9] proposes a method of using SIP protocol to provide conference communication services.

Reference [10] and reference [7] describe the 3rd Generation Partnership Project (3GPP) standard of IMS.

Reference [11] proposes a system via which a communication terminal device can transmit a registration information to a server, which then finds out which communication Services are available to users defined by user identification information. That is to say, the server informs the communication terminal device of all communication services available to the user via a configuration message.

Reference [12] presents a method for deciding whether multiple data streams should be transmitted via a packet-based communication link or a circuit-switched communication link.

Reference [13] proposes a method in which the first base station and the second base station transmit the data of their base stations to the communication terminal equipment, and then the communication terminal equipment decides which one to use based on these data. The base concave carries out the work of data transmission.

Reference [14] proposes a method of transmitting a first message according to a one-way protocol from a first computer to a second computer via a communication link. The second computer can transmit the response information to the first computer (ie, the first computer that previously transmitted the first information to the second computer) via the same communication link.

Contents of the invention

The object of the present invention is to provide a method and a communication system by means of which communication terminals can be configured with services more efficiently than in the prior art.

The above-mentioned tasks can be accomplished by adopting the registration method of communication terminal equipment in the communication system proposed by the present invention, the communication system, the control method of communication terminal equipment, and the communication terminal equipment with the characteristics of the independent patent application item of the present invention.

The present invention proposes a method for registering communication terminal equipment in a communication system. This communication system has a service communication network (this service communication network can be a core network, and preferably an Internet communication protocol multimedia core Internet subsystem (IMS)), an access communication network, and a control unit, in this method, the communication terminal equipment can transmit the first information to the control unit via the access communication network, the first The information contains data that inquires about the registration status of the communication terminal equipment in the service communication network and the value of specification parameters, which are used to define the specifications of the communication services provided by the service communication network; the control unit can access the communication network via The road transmits the second information to the communication terminal equipment, informing the communication terminal equipment that the registration of the communication terminal equipment in the service communication network has been completed, and at the same time, this second information also contains information that enables the communication terminal equipment to use the defined communication services configuration parameter value.

In addition, the present invention also proposes a communication system, a method for controlling communication terminal equipment, and a communication terminal equipment designed according to the above method.

As mentioned above, the so-called (service) configuration of the communication terminal refers to the transmission of the configuration data required for utilizing the communication service to the communication terminal.

Simply speaking, the purpose of the present invention is to expand the use of the registration procedure in the service communication network (such as the registration procedure carried out in the IMS according to the IMS standard), so that it can be used as the service configuration of the communication terminal equipment at the same time, that is to say to expand Function of the registration procedure according to the state of the art.

In an embodiment of the present invention, in addition to registering in the serving communication network, it also needs to register in the accessing communication network, such as GPRS-Attach.

In addition, the purpose of the present invention can also be said to be to transmit the specification of the communication service that the user wants to use to the service communication network using the registration information.

The second message may contain all configuration parameter values required to utilize the communication service, or only some of the configuration parameter values required to utilize the communication service, for example only the configuration that has changed since the last transmission of the registration message by the communication terminal device parameter value.

In particular the second message may contain only one required configuration parameter value.

Different from the service configuration method used in the prior art, the method of the present invention is not based on the transmission of notification information.

An advantage of the invention is that the configuration data required to utilize the communication service are present in the communication terminal immediately after the registration of the communication terminal has been completed.

With the method according to the invention, defined communication services can thus be used immediately after registration of the communication terminal.

A further advantage of the invention is that the time required for transmitting the configuration data required to utilize the communication service can be shortened, since these configuration data can be included in the registration information for registering the communication terminal in the communication system and can be transmitted simultaneously.

If only a small amount of configuration data is required to utilize the communication service (for example, only need to know the address of the server that provides the communication service), then the transmission efficiency of the notification method based on the prior art just seems too poor, that is to say relative to the In terms of data volume, the notification method based on the prior art occupies too many transmission resources.

Using the method of the invention can avoid such a phenomenon of occupying too many transmission resources.

The attached patent application items of the present invention are related to the further improvement of the present invention. Further improvements of the present invention related to the method proposed by the present invention are also applicable to the communication system, the method for controlling communication terminal equipment, and the communication terminal equipment proposed by the present invention.

In an advantageous embodiment of the invention, the access communication network is a mobile radio communication network.

Another improved way is that the access communication network is a mobile radio communication network established according to the 3rd Generation Partnership Project (3GPP) standard.

Another improvement is that the access communication network is a mobile radio communication network established according to the Universal Mobile Telecommunications System (UMTS) standard.

In an advantageous embodiment of the invention, the access communication network is a mobile radio communication network established according to the Global System for Mobile Telecommunications (GSM) standard.

Another improved way is that the service communication network is a communication network established on the basis of Internet Protocol.

Another improved way is that the service communication network is a communication network established according to the 3rd Generation Partnership Project (3GPP) standard.

Another improvement is that the specification parameter value is included in an information prefix area established in accordance with the 3GPP standard in the first message, or in an information prefix area added in the first message outside the 3GPP standard , or included in the information body area of the first message.

Another improved method is that the configuration parameter value is included in an information prefix area established in accordance with the 3GPP standard in the second message, or in an information prefix area added in the second message outside the 3GPP standard , or contained in the information body area of the second information.

In this way, appropriate transmission resources can be selected according to the data volume of configuration parameter values.

According to one embodiment of the invention, the first message can define a plurality of communication services, while the second message contains configuration parameter values enabling the communication terminal to use these defined communication services.

Another improved way is to create the first message and/or the second message according to the SIP protocol.

This way can make the method of the present invention have so-called "downward compatibility", that is to say, the network parameters not supported by the present invention will remain neutral. The reason for this is because of the transparency of SIP, because the network parameters with SIP capability will ignore the unknown information part, and transfer the information, instead of ignoring the information or throwing the information out.

Another improved way is that the service communication network is a communication network established according to the Internet Communication Protocol Multimedia Core Network Subsystem (IMS) standard.

Another improvement method is to assign a P-CSCF and an S-CSCF (CSCF: Call Session Control Function (call conference control function), P-CSCF: Proxy-CSCF, S-CSCF: Serving-CSCF) to the communication terminal device, and transmit the P-CSCF, S-CSCF, or two configuration parameters that the communication terminal device can use the defined communication service to the communication terminal device via the second message.

This makes the method according to the invention particularly advantageous for the service configuration of communication terminals for regional communication services. The so-called regional communication service refers to the communication service provided by the visited public area mobile network V-PLMN (PLMN: Public Land Mobile Network, V-PLMN: Visited-PLMN). The service configuration of regional communication services via the notification method requires the cooperation of network operators of residential public area mobile networks H-PLMN (Home-PLMN) and V-PLMN, because the configuration parameter values needed to utilize communication services must be from The V-PLMN is transferred to the H-PLMN.

If the method of the present invention is used, the cooperation of the network operators of the H-PLMN and the V-PLMN is not required, because the P-CSCF usually has the configuration parameter values required for utilizing communication services, and these configuration parameter values themselves can also be Via the second message is transmitted to the communication terminal.

Another refinement is that the communication terminal applies the configuration parameter values required to utilize the defined communication services.

Another way to improve is that the communication service is a real-time information service (Instant-Messaging-Dienst), a conference service (Conferencing-Dienst), a conference-based notification service (Session-Based-Messaging-Dienst) ), such as a service that allows two or more participants to chat with each other, a presence service (Presence-Dienst), that is, a service that enables users to know each other's availability or connectability, a Push- to-Talk service, such as a service that enables communication terminal equipment to have the function of a portable radio transceiver (Walkie-Talkie), or a whiteboard information service (Whiteboard-Information-Dienst), such as allowing users to exchange text data with each other or image service.

Another improvement is that the second information is a reliable answer of the service communication network to the inquiry about the registration status.

In one embodiment of the present invention, the second message is a 200-OK answer (please compare Table 2 and Table 3), the first message is a recorder message (please compare Table 1), this part will Described in detail below.

Another improved way is that the communication parameter value fully defines the configuration data required by the communication terminal equipment to utilize the defined communication service, or the communication parameter value only defines part of the configuration data required by the communication terminal equipment to utilize the defined communication service.

That is, part or all of the configuration data will be transmitted to the communication terminal device.

Another improvement is that the second message only contains configuration parameter values that have changed since the last transmission of the configuration parameter values required to enable the communication terminal to use the defined communication service.

Description of drawings

The content of the present invention will be further described below in conjunction with actual implementation methods and drawings.

Figure 1: Communication system of one embodiment of the present invention.

Figure 2: Information flow graph of an embodiment of the present invention.

Detailed ways

FIG. 1 shows a communication system 100 according to an embodiment of the present invention.

The communication system 100 is designed according to the IMS structure described by 3GPP, please refer to reference [7] for example.

Communication terminal 101 is connected to an IMS 111 via an access network 102 .

For example, the access network 102 can be a mobile radio communication network established according to the UMTS standard. This mobile radio communication network can establish a channel for the communication terminal equipment to the IMS 111 via a packet-switched domain (Packet-Switched-Domain). The acquisition network 102 can also be a mobile radio communication network established according to the GSM standard.

The access network 102 can also be a fixed network. For example, the communication terminal 101 can have a device allowing access to the Internet, such as a Digital Subscriber Line (DSL: Digital Subscriber Line) modem. In the embodiment shown in FIG. 1 , communication terminal device 101 is connected to IMS 111 via the Internet.

Depending on the configuration of the access network 102, the communication terminal 101 can be a mobile phone, a computer with a mobile phone, or a computer without a mobile phone.

In the embodiment of FIG. 1, the access network 102 is a mobile radio communication system established according to the UMTS communication standard.

A mobile radio network 112 of the access network 102 has the structure of a UMTS radio network, which is also called a UMTS radio access network (UTRAN: UMTS-TerrestriaL-Radio-Access-Network).

The access network 102 has a plurality of mobile radio network subsystems (RNS: Radio Network Subsystems) 113, 114, which are each connected via an Iu interface 115, 116 to a UMTS core network (Core Network) 117.

The UMTS core network 117 has a circuit switching network domain (Circuit-Switched (CS)-Domain) 138, a packet switching network domain (Packet-Switched (PS)-Domain) 139, and a home address recorder (HLR: Home-Domain) Location-Register) 140.

CS-Domain138 is composed of mobile service switching center (MSC: MobileSwitching Center), mobile service switching center gateway (GMSC: Gateway MobileSwitching Center), and login address recorder (VLR: Visitor Location Register) and other components . The circuit switched network domain CS-Domain 138 constitutes the line connection between the mobile radio network 112 and external open networks (for example: public switched telephone network (PSTN: Public Switched Telephone Network), integrated digital service network (ISDN: Integrated Services Digital Network)) interface.

The Circuit Switched Domain (CS)-Domain 138 is responsible for performing all functions required to ensure circuit-connected data transmission between the PSTN (or ISDN) and a mobile radio user equipment 101 .

The PS-Domain 139 of the packet switching network is composed of components such as the supporting GPRS service node (SGSN: ServingGPRS Support Node) and the GPRS support node communication gateway (GGSN: Gateway GPRSSupportNode). Packet-switched domain PS-Domain 139 forms a packet-based connection interface between mobile radio network 112 and an external packet-based data network (eg the Internet, in the embodiment of FIG. 1 IMS 111 ).

The packet-switched network domain PS-Domain 139 is responsible for carrying out all the functions required to ensure packet-connected data transmission between the external packet data network and the communication terminal 101 .

The Home Address Register HLR140 is a central database that stores all user data, which are required for establishing connections and performing various services.

The radio network subsystems RNS 113 , 114 each have a radio network controller (RNC: Radio Network Controller) 118 , 119 and one or more mobile radio base stations 120 , 121 , 122 , 123 .

A UMTS base station is also called a node base station (NodeB).

The two different radio network controllers RNC113, 114 of the radio network subsystem RNS118, 119 are interconnected via an Iur interface.

Each mobile radio base station 120 , 121 , 122 , 123 of the radio network subsystem RNS113 , 114 is connected via an Iub interface to the radio network controller RNC118 , 119 of the radio network subsystem RNS113 , 114 .

Furthermore, each mobile communication radio base station 120 , 121 , 122 , 123 of the radio network subsystem RNS 113 , 114 manages one or several radio units (CE) 125 to 136 in the radio network subsystem RNS 113 , 104 .

The radio network controller RNC 118 , 119 of the mobile radio network subsystem RNS 113 , 114 monitors the allocation of radio resources of the radio units 125 to 136 in the mobile radio network subsystem RNS 113 , 114 .

The entire geographical area in which data can be transmitted via access network 102 and communication terminal 101 is divided into radio units 125 to 136 .

If data are to be transmitted in one of the radio units 125 to 136 via the communication terminal 101 , the data are transmitted via the mobile communication radio base stations 120 , 121 , 122 , 123 that manage the radio units 125 to 136 .

Between a mobile communication radio base station 120, 121, 122, 123 and communication terminal equipment 101 (for example a mobile phone), communication signals and data signals are passed through an air interface (Uu) 137 in a radio unit 125 to 136 be transmitted by the appropriate method (preferably a multiple access transition method).

For example, in the frequency division duplex (FDD: Frequency Division Duplex) mode of UMTS, signals can be sent in the uplink (Uplink) direction and downlink (Downlink) direction through separate indications of frequencies or frequency ranges. transmission.

The so-called uplink (Uplink) refers to the transmission of signals from the communication terminal equipment 101 to a mobile communication radio base station 120, 121, 122, 123, and the downlink (Downlink) refers to the transmission of signals from a mobile communication radio base station 120 , 121, 122, 123 are transmitted to the communication terminal device 101.

Communication terminal 101 is connected to a P-CSCF 103 of IMS 111 via access network 102 . The P-CSCF here is the abbreviation of Proxy-CSCF (CSCF: Call Session Control Function (call conference control function)).

P-CSCF103 as a switch is connected to one DNS104 and one I-CSCF105. DNS here is the abbreviation of Domain Name Server (Domain Name Server), and I-CSCF refers to querying CSCF (Interrogating-CSCF).

I-CSCF105 is connected to one HSS106 and one S-CSCF107. Here, HSS is an abbreviation of Home Subscriber Server (Home Subscriber Server), and S-CSCF is an abbreviation of Serving-CSCF (Serving-Call Conference Control Function).

S-CSCF107 is connected with an application server (AS: Applikation Server) 110.

Communication terminal equipment 101 , access network 102 , P-CSCF 103 , and DNS 104 are all part of a visited public area mobile network (V-PLMN) 109 .

I-CSCF 105 , HSS 106 , S-CSCF 107 , and application server 110 are all part of a Home Public Land Mobile Network (H-PLMN) 108 .

1, the visited public area mobile network (V-PLMN) 109 is different from the residential public area mobile network (H-PLMN) 108, that is, the visited public area mobile network ( V-PLMN) is different from a public land mobile network (PLMN) for storing data about the user of the communication terminal 101 .

For example, when a user uses the communication terminal equipment 101 abroad, and the user is a customer of a domestic mobile radio service provider, then the user connects the domestic H -PLMN108 communication.

As described in reference [10] and reference [7], P-CSCF103, I-CSCF105, HSS106, S-CSCF107, and application server 110 are all part of the Internet communication protocol multimedia subsystem IMS (IPMultimedia Subsystem) 111.

The user can use the conference service provided by IMS111 via the communication terminal device 101, for example, to send an "IMS-Instant-Message" to another communication terminal device connected to the communication system 100, or communicate with other communication systems. 100 linked users to conduct a conference call together.

Please refer to Reference [1] for the definition of IMS-Conferencing-Service.

According to the provisions of the IMS standard, the communication terminal device 101 can use the communication service provided by the IMS only after completing the registration in the IMS 111 .

The purpose of registration is to register and validate the user's identity, and it is also the first IMS program executed after the communication terminal device 101 is activated.

It is also possible to re-register the user's identity. A re-registration may be required for a number of different reasons, such as to perform a validation operation for a new user.

As mentioned above, in order to use the IMS service, that is, to use the communication service provided by IMS111, in addition to completing the registration procedure of the communication terminal equipment, it is usually necessary to inform the service client (Service-Client) of the configuration data of the communication service to be used. .

The following will illustrate how to complete the registration procedure of the communication terminal equipment according to the service configuration method of the communication terminal equipment proposed by the present invention with reference to FIG. 2 .

Figure 2 shows an information flow 200 for one embodiment of the invention.

Information flow graph 200 shows information flow among communication terminal equipment 201, access network 202, P-CSCF 203, DNS 204, I-CSCF 205, S-CSCF 206, and HSS 207.

In one embodiment of the present invention, the transmitted information has a structure defined by the Session Initiation Protocol (SIP: Session Initiation Protocol) described in reference [6] and reference [7].

Information exchange between the communication terminal device 201 and the access network 202 is performed via a radio access network (RAN: Radio Access Network).

P-CSCF203, DNS204, I-CSCF205, S-CSCF206, and HSS207 are all part of IMS209.

In step 211, the communication terminal device 201 will report to the access network 202 via a "(integrated packet radio technology additional procedure) GPRS Attach Procedure", and establish a packet data protocol (PDP: Packet Data Protocol) program status for the IMS signal , that is to say to establish a packet data protocol (PDP: Packet Data Protocol) program state for communicating with IMS209.

In this case, an IP address and a P-CSCF 203 are assigned to the communication terminal 201 .

P-CSCF203 is the first contact point between communication terminal equipment and IMS209.

P-CSCF203 is a part of a certain public area mobile network (PLMN: Public Land Mobile Network), and the communication terminal equipment communicates with IMS209 through this public area mobile network (PLMN: Public Land Mobile Network).

However, in general, this public area mobile network (PLMN) is different from the residential public area mobile network H-PLMN (Home-PLMN) 210, that is to say, it is used to store information about the communication terminal equipment 201. The public area mobile network (PLMN) of the data is different, so the public area mobile network (PLMN) will be called the visited public area mobile network (V-PLMN: Visited-PLMN) in the following description.

In step 212 , the communication terminal transmits a registration message 213 to P-CSCF 203 .

Since the registration procedure is used for service configuration, the registration information 213 serves to define the service configuration data required for which communication service the communication terminal device 201 is required to use.

That is to say, the function of the registration information 213 is to inform the communication terminal device 201 which communication service should be configured for use.

The data defining the communication service can be included in the information prefix area of the registration information 213 or in the information body area (Body) of the registration information 213 .

If the structure of the registration information conforms to the provisions of the SIP protocol, it can be based on the IMS standard in the SIP protocol to prefix the existing information header (Header), via a new information header (Header) added to the information prefix, or via An information body area (Body) to define the communication service.

If the communication service is defined through the information body area of the registration information, it is better to define the communication service in a file with XML (Extensible Markup Language) format or by notifying the definition parameter value.

If the communication service is defined through the information body area of the registration information 213, then the communication terminal device 201 can be clearly notified of those parameter values required for utilizing the communication service.

In this way, communication terminal 201 can query specific configuration parameter values of the communication service.

In the embodiment of FIG. 2 , the structure of the registration information 213 is shown in Table 1, and the content of the information header (Header) is only used as an example, which is not necessarily the case.

Each row in Table 1 and Table 2 and Table 3 in the following description is equivalent to an information header (Header), that is to say, is equivalent to an information prefix area.

See row 13 of Table 1, the content of this registration information has more definitions about communication services than the registration information defined according to the IMS standard of 3GPP. In this example, the communication service being defined is a conferencing service.

REGISTER sip:registrar.home1.net SIP/2.0 Via:SIP/2.0/UDP[5555::aaa:bbb:ccc:ddd]; comp=sigcomp; branch=z9hG4bKnashds7 Max-Forwards: 70

REGISTER sip:registrar.home1.net SIP/2.0 P-Access-Network-Info:3GPP-UTRAN-TDD; utran-cell-id-3gpp＝234151DOFCEII From:<sip:user1_public1@home1.net>; tag＝4fa3 To:<sip:user1_public1@home1.net> Contact:<sip:(5555::aaa:bbb:ccc:ddd]; comp=sigcomp>; expires=600000 Call-ID:apb03aOsO9dkjdfglkj49111 Authorization: Digest username = "user1_private@home1.net", realm = "registrar.home1.net", nonce = "", uri = "sip:registrar.home1.net", response = "" Security-Client: ipsec-3gpp; alg=hmac-sha-1-96; spi=12345678; port1=1357 Require:sec-agree Proxy-Require:sec-agree Config-Client:conference CSeq: 1 REGISTER Supported: path Content-Length: 0

Table 1

In step 214, P-CSCF202 will apply the so-called "From-Header" in the registration information 213

(Please compare the 5th row of Table 1) The notified user identity confirmation (PUID: Personal UserIdentification) finds out the H-PLMN210 of the user and a CSCF205 of the H-PLMN210 by making an inquiry to the DNS204.

In step 215 , P-CSCF 203 transmits registration information 213 to I-CSCF 205 of H-PLMN 210 .

In order to know the registration status, in step 216, the I-CSCF205 sends a user registration status query (User-Registration-Status-Query) message to the HSS207.

In step 217 , the I-CSCF 205 selects an S-CSCF 206 for the communication terminal device 201 , and transmits the registration information 213 to the S-CSCF 206 .

For ease of understanding and description of the registration procedure, it is assumed in this example that the registration information 213 is not integrity protected.

Since in IMS, integrity protection is a prerequisite for registration information to be processed and/or accepted, in step 218, S-CSCF206 will respond to the so-called request (Challenge) of communication terminal equipment 201 from HSS207. The required data is called out.

The request made by the communication terminal device 201 will cause the communication terminal device 201 to transmit a piece of registration information. This registration information not only has integrity protection, but also is valid in the IMS. This process is carried out with the so-called "Shared Secret" method.

In step 219, S-CSCF 206 determines an validation vector to be used by the UE's request.

S-CSCF206 will require communication terminal equipment 201 to transmit an "unauthorized (Unauthorized)" information 221 from CSCF206 to I-CSCF205 in step 220, and in step 222, this "401 unauthorized (Unauthorized)" information 221 is transmitted from CSCF 206 to P-CSCF 203 , and in step 223 this “Unauthorized (Unauthorized)” message 221 is transmitted from P-CSCF 203 to communication terminal 201 .

In reference [6] and reference [7] there is a detailed description of the effectiveness achieved through the above requirements.

After the communication terminal equipment 201 receives this "401 Unauthorized (Unauthorized)" information 221, the communication terminal equipment 201 will generate a protected registration information 225 in step 224, and this registration information 225 has the ability to enable the user to validate Integrity protection and information header (Header), at least the other contents contained in the registration information 225 are exactly the same as the registration information 213.

In step 226 , the communication terminal device 201 transmits the protected registration information 225 .

Steps 227, 228, 229, 230 are almost identical to steps 214, 215, 216, 217, the only difference is that what is transmitted in steps 227, 228, 229, 230 is not registration information 213, but protected registration information 225.

After the S-CSCF receives the protected registration information 225 , the communication terminal equipment 201 will be validated in step 231 .

Then the communication terminal device 201 completes the registration in the HSS 207 through the user identity confirmation of the user in step 232 .

In step 233 , S-CSCF 206 will transmit the first confirmation message 234 to I-CSCF 205 to confirm that communication terminal equipment 201 has completed registration in IMS 209 .

In the embodiment of FIG. 2 , the structure of the first confirmation message 234 is shown in Table 2, and the content of the message header (Header) is as described in the previous example.

SIP/2.0 200OK Via:SIP/2.0/UDP icscf1_p.home1.net; branch＝z9hG4bK351g45.1, SIP/2.0/UDPpcscf1.visited1, net; branch＝z9hG4bK24Of34.1, SIP/2.0/UDP(5555::aaa:bbb:ccc: dddj:1357;comp=sigcomp;branch=z9hG4bKnashds7 Path:<sip:term@pcscf1.visited1.net; lr> Service-Route:<sip:orig@scscf1.home1.net; lr> From: To: Call-ID: Contact:<sip:[5555::aaa:bbb:ecc:ddd):1357; comp＝sigcomp>; expires＝600000 Config-Server:<sip:conference-factory1@mrfc1.home1.net>, <sip:conference>factory2@mrfc1.home1.net>, <sip:conference-factory1@mrfc2.home1.net> CSeq: Date: Wed, 11 July 2001 08:49:37 GMT P-Associated-URI: <sip:user1_public2@home1.net>, <sip:user1_public3@home1.net>, <sip:+1-212-555-1111@home1.net; user＝phone> Content-Length:

Table 2

In step 235, a first confirmation message 234 is transmitted from I-CSCF 205 to P-CSCF 203.

The first confirmation message 234 contains the configuration data required for the communication service defined by the registration information 213 and the protected registration information 225 .

In step 235 , P-CSCF 203 will transmit the second confirmation message 237 to communication terminal equipment 201 .

If necessary, the second confirmation message 237 contains other necessary configuration data in addition to the entire contents of the first confirmation message 234 .

In the embodiment of Fig. 2, the structure of the first confirmation message 234 is shown in Table 2, and the structure of the second confirmation message 237 is shown in Table 3, wherein the content of the information header (Header) is as described in the previous example , and the content of the information header (Header) of the second confirmation information 237 shown in Table 3 only includes the part different from the content of the information header (Header) of the first confirmation information 234 .

The content of the first confirmation message is almost identical to that of the second confirmation message, with the only difference being the 2nd and 9th lines of Table 3.

SIP/2.0 200OK Via:SIP/2.0/UDP(5555::aaa:bbb:ccc:ddd):1357; comp＝sigcomp; branch＝z9hG4bKnashds7 Path: Service-Route: From: To: Call-ID: Contact: Config-Server:<sip:cor:ference-factory1@mrfc1.home1.net>, <sip:conference-factory2@mrfc1.home1.net>, <sip:conference>, factory1@mrfc2.home1.net, <sip :conference>factory1@mrfc1.visited1.net>, sip:conference-factory1@mrfc1.visited1.net>, <sip:conference-factory1@mrfc2.visited1.net> CSeq: Date: P-Associated-URI:

SIP/2.0 200OK Content-Length:

table 3

As shown in the ninth row of Table 2 and the ninth row of Table 3, compared with the confirmation information established according to the IMS standard of 3GPP (see reference [6]), the first confirmation information 234 and the second confirmation information 237 also adds content about configuration data.

As mentioned earlier, the communication service in this example is a conference service.

The second confirmation message 237 signals to the communication terminal 201 that the registration has just taken place.

As mentioned earlier, the second confirmation message 237 contains the configuration data required for the communication service defined by the registration information 213 and the protected registration information 225 .

As shown in the ninth row of Table 2 and the ninth row of Table 3, in the embodiment of FIG. 2 , the transmission of the configuration data located in the information prefix is through an additionally added name named "Config-Server" information header (Header) to carry out.

In another embodiment of the present invention, the transmission of configuration data is carried out via an existing information header (Header), that is, via the registration procedure established according to the IMS standard of 3GPP (see reference [6]) The information header (Header) of a registration confirmation information named "200-OK information" is carried out.

In another embodiment of the present invention, the transmission of the configuration data is performed through the information body of the first confirmation message 234 and the information body of the second confirmation message 237 .

In another embodiment of the invention, the configuration data is transmitted in the manner described in reference [8].

For this purpose, the first acknowledgment message 234 and/or the second acknowledgment message 237 contains the address of a file (for example an XML file) which specifies where the configuration data can be found.

The communication terminal device 201 can download this file, for example, download this file via an "HTTP Get" command of Hyper Text Transfer Protocol (HTTP: Hyper Text Transfer Protocol).

As mentioned above, whether it is the P-CSCF203 that is a part of the V-PLMN238 or the S-CSCF205 that is a part of the H-PLMN210 can transmit the required configuration data to the communication terminal equipment 201 to execute the communication terminal equipment 201 service configuration.

The P-CSCF203 can transmit the required configuration data to the communication terminal equipment 201, the process is that the P-CSCF203 adds the required configuration data to the first confirmation message 234 in step 236, and will change in this way The passed first confirmation message 234 is transmitted as the second confirmation message 237.

In step 233 , P-CSCF 203 can transmit the required configuration data to communication terminal 201 via first confirmation message 234 .

Since both P-CSCF203 and S-CSCF203 can transmit the required configuration data to communication terminal equipment 201, communication terminal equipment 201 can be configured for regional services, that is, communication services provided via V-PLMN238, also It can be configured as a service for the H-PLMN210, that is, a communication service provided via the H-PLMN210.

In the case of "re-register", the communication terminal device 201 can re-query the configuration data.

In an advantageous embodiment of the invention, if the communication terminal requests configuration data again, only those configuration parameters which have changed since the last transmission of configuration data to the communication terminal are transmitted to the communication terminal.

For ease of understanding, an example will be used below to illustrate this situation.

The following will take the IMS conference service described in reference [1] as an example to illustrate this situation.

In this example, the required configuration data consists only of the SIP-URIs of the conference servers (Conference-Servers) that provide conference communication services (see reference [9]), and in the following In the description, the SIP-URIs of the conference server (Conference-Server) are called conference factory URIs (Conference-Factory-URI, see reference [1] and reference [9]).

The SIP-URI that enables users to connect to a conference and join the conference is called a conference URI, and the SIP-User-Agent belonging to the SIP-URI is called a conference-focus. The SIP user agent (SIP-User-Agent) here is a level of the conference control program.

Since the conference server (Conference-Server) is responsible for generating the conference and the conference focus (Conference-Focus), the conference server (Conference-Server) must know the conference factory URI (Conference-Factory-URI).

According to reference [1], since the conference factory URIs (Conference-Factory-URI) is the only parameter to activate the IMS conference service, the amount of configuration data in this example is very small.

Applying the method of the invention to this example therefore has great advantages, because the method of the invention does not have to transmit a notification message for signaling only a few parameter values and a reply message in reply to this notification message.

The present invention can also be applied to other situations, for example, to the service configuration of the IMS conference service containing other parameters.

For example, a directory of available conferences and their addresses can be transmitted.

If a user wants to create a conference via a communication terminal device, he can use conference factory URIs (Conference-Factory-URI) to send an "INVITE" message to the conference server. After receiving the "INVITE" information, the conference server will generate a conference and the conference focus (Conference-Focus) belonging to the conference, and generate a conference URI for the conference, through which the conference URI can send the Conference addressing (see reference [1] and reference [9]), and other users can also use other communication terminal devices to participate in this conference via this conference URI.

The registration procedure of this example is the same as that of the embodiment of FIG. 2 .

In this example, the description of the communication service for which the communication terminal device 201 requires configuration data and the transmission of the configuration data are performed by the information prefixes of the SIP information shown in Tables 1 to 3.

The description of the communication service is carried out with a newly added (SIP) information header (Header) named "Config-Client" (see line 13 of Table 1).

As mentioned above, the description about the communication service can also be carried out by adding new parameters in the information header (Header) established according to the IMS standard.

It is best to use "From-Header" (see line 13 of Table 1), contact information header (Contact-Header, see line 13 of Table 1), or Call-ID-Header (see line 13 of Table 1) to Carry out the above work.

As in the embodiment shown in FIG. 2 , the registration information 213 after adding the information established according to the IMS standard to the specifications defining the communication service will be transmitted to the S-CSCF 206 located in the user's H-PLMN 210 via the P-CSCF 203 .

The task of the second confirmation message 237 is to inform the communication terminal equipment that the registration work has been completed.

The second confirmation message 237 contains configuration data added from P-CSCF 203 and S-CSCF 206 .

In this way, both P-CSCF203 and S-CSCF206 can transmit the configuration data to the communication terminal equipment.

However, P-CSCF 203 and S-CSCF 206 do not necessarily need to transmit configuration data to communication terminal equipment.

In this example, the first confirmation message 234 sent from S-CSCF 206 has the structure shown in Table 2. Contain the meeting factory of the conference server (Conference-Server) of the H-PLMN210 added from S-CSCF206 in the information header (Header, see Table 2 row 9) named "Config-Server" of the first confirmation message 234 URI (Conference-Factory-URI).

The communication terminal device can use a conference factory URI (Conference-Factory-URI) to generate a conference.

P-CSCF203 will improve the first confirmation message 203, that is to say, P-CSCF203 will add the address of the conference server (Conference-Server) it knows (that is to say, the address of the conference server is a part of V-PLMN238) to the name It is the information header (Header) of "Config-Server".

Then the P-CSCF 203 will transmit the second confirmation information 237 , that is, the improved first confirmation information 234 , to the communication terminal device 201 .

As shown above, the structure of the second confirmation information 237 is shown in Table 3, and in Table 3 only the parts different from those in Table 2 are displayed.

After receiving the second confirmation message 237, the service configuration of the communication terminal 201 is completed.

Both communication terminal equipment and (IMS) can import new service configurations. In order to import a new service configuration, the communication terminal transmits a new registration information to the network (re-registration). Another possibility is that the network can request the communication terminal to carry out re-registration via a corresponding message.

The references cited in this specification are as follows:

[1] 3GPP TR 29.847: Conferencing based on SIP, SDP, and other protocols

[2] IETFR: FC3265 SIP-Specific Event Notification 3GPP TR 29.847: Conferencing based on SIP, SDP, and other protocols

[3] D.Petrie: A Framework for SIP User Agent Configuration, IEFTInternet Draft draft-ietf-sippingconfig-framework-OO.txt, 02/2003

[4]WO2003049459

[5]WO200184798

[6] 3GPP TS24.228: Signaling Flows the IP Multimedia Subsystem based on SIP and SDP

[7] 3GPP TS24.229: IP Multimedia Call Control Protocol based on SIP and SDP; Stage 3

[8]IETF: Requirements for Content Indirection in Session Initiation Protocol, IEFT Internet Draft draft-ietf-sipping-content-mech-02.txt

[9]IETF: SIP Call Control, Conferencing for User Agents, IEFT InternetDraft-draft-ietf-sipping-cc-conferencing-01.txt

[10] 3GPP TS 23.228: IP multimedia subsystem; Stage 2

[11]US 2004/0082346 A1

[12]US 2003/0039237 A1

[13]US 6760599 B1

[14] WO 03/055146 A1

Explanation of reference signs

100 Communication system

101 Communication terminal equipment

102 access network

103 P-CSCF

104 DNS (Domain Name Server)

105 I-CSCF

106 HSS (Household Subscriber Server)

107 S-CSCF

108 H-PLMN (Residential Public Area Mobile Network)

109 V-PLMN (visited public area mobile network)

110 AS (Application Server)

111 IMS (Internet Protocol Multimedia Core Network Subsystem)

112 Mobile radio networks

113, 114 RNS (Mobile Radio Network Subsystem)

115, 116 Iu interface

117 core network

118, 119 RNC (Radio Network Controller)

120, 123 Mobile radio base stations

124 Iur interface

125-136 radio unit

137 Air interface

138 CS domain

139 PS Domains

140 Home Address Recorder (HLR)

200 information flow

201 Communication terminal equipment

202 access network

203 P-CSCF

204 DNS (Domain Name Server)

205 I-CSCF

206 S-CSCF

207 HSS (Household Subscriber Server)

208 RAN (Radio Access Network)

209 IMS (Internet Protocol Multimedia Core Network Subsystem)

210 H-PLMN (Residential Public Area Mobile Network)

211, 212 steps

213 Registration information

214-220 steps

221 401-Unauthorized (Unauthorized) information

Steps 222-224

225 Protected registration information

Steps 226-233

234 Confirmation information

235-236 steps

237 Confirmation information

238 V-PLMN (Visited Public Area Mobile Network)

Claims (19)

1. A method for registering a communication terminal device in a communication system having a service communication network, an access communication network, and a control unit, the method being characterized by: -- The communication terminal device transmits the first message to the control unit via the access communication network, this first message contains the user identity confirmation of the user of the communication terminal device, inquiry about the registration of the communication terminal device in the service communication network Circumstances and specification parameter values, these specification parameter values are used to define the specifications of the communication services provided by the service communication network, and at the same time, the communication terminal equipment will also request to provide corresponding communication services for the defined communication services via the access communication network service configuration data; --The control unit transmits the second information to the communication terminal equipment via the access communication network, informing the communication terminal equipment that the registration of the communication terminal equipment in the service communication network has been completed, and at the same time, the second information also contains the information for communication The terminal device is able to utilize the defined configuration parameter values of the communication service. 2. A method as claimed in claim 1, characterized in that the access communication network is a mobile radio communication network. 3. The method according to claim 2, characterized in that the access communication network is a mobile radio communication network established according to the 3rd Generation Partnership Project (3GPP) standard. 4. The method as claimed in claim 3, characterized in that the access communication network is a mobile radio communication network established according to the Universal Mobile Telecommunications System (UMTS) standard. 5. The method according to claim 1, characterized in that the service communication network is a communication network based on the Internet Protocol. 6. The method according to claim 5, characterized in that: the service communication network is a communication network established according to the 3rd Generation Partnership Project (3GPP) standard. 7. The method according to claim 6, characterized in that: the specification parameter value is included in an information prefix area established in the first message according to the 3GPP standard, or is included in the first message and is added outside the 3GPP standard In one of the message prefix areas, or in the information body area of the first message. 8. The method according to claim 6, characterized in that: the configuration parameter value is contained in an information prefix area established in the second message according to the 3GPP standard, or is contained in the second message and is additional to the 3GPP standard In the prefix area of one of the messages, or in the information body area of the second message. 9. The method according to claim 6, characterized in that: the service communication network is a communication network established according to the Internet Communication Protocol Multimedia Core Network Subsystem (IMS) standard. 10. The method according to claim 6, characterized in that: a P-CSCF and an S-CSCF are assigned to the communication terminal equipment, and the P-CSCF, the S-CSCF, or the communication terminal equipment can use the defined The two configuration parameters of the communication service are transmitted to the communication terminal via the second message. 11. The method according to claim 1, characterized by: establishing the first information and/or the second information according to the SIP protocol. 12. A method according to claim 1, characterized in that the communication terminal device applies the configuration parameter values required to utilize the defined communication service. 13. The method according to claim 1, characterized in that: the communication service is a real-time information service (Instant-Messaging-Dienst), a conference service (Conferencing-Dienst), a conference-based notification service (Session -Based-Messaging-Dienst), a presence service (Presence-Dienst), or a whiteboard information service (Whiteboard-Information-Dienst). 14. The method according to claim 1, characterized in that the second information is a reliable answer of the service communication network to the inquiry about the registration status. 15. The method according to claim 1, characterized in that: the configuration parameter value of the communication service completely defines the configuration data required by the communication terminal equipment to utilize the defined communication service, or the configuration parameter value of the communication service only defines the communication terminal Part of the configuration data required for a device to utilize a defined communication service. 16. The method as claimed in claim 1, characterized in that the second information contains only configuration parameter values that have changed since the last transmission of configuration parameter values required to enable the communication terminal to use the defined communication service. 17. A communication system with a service communication network, an access communication network, a control unit, and a communication terminal equipment, the characteristics of this communication system are: - the communication terminal has first transmission means, the task of which is to transmit to the control unit via the access communication network a first message containing the user identification of the user of the communication terminal, Inquire about the registration status of the communication terminal equipment in the service communication network, as well as the specification parameter values, which are used to define the specifications of the communication services provided by the service communication network, and the communication terminal equipment will also access the communication network via The corresponding communication service configuration data is required for the defined communication service; -- The control unit has a second transmission device, the task of this transmission device is to transmit the second information to the communication terminal equipment via the access communication network, and inform the communication terminal equipment that the communication terminal equipment has completed the communication terminal equipment in the service communication network registration, while this second message also contains configuration parameter values enabling the communication terminal to utilize the defined communication services. 18. A method of controlling a communication terminal of a communication system having a service communication network, an access communication network, and a control unit, the method being characterized by: -- The communication terminal device transmits the first message to the control unit via the access communication network, this first message contains the user identity confirmation of the user of the communication terminal device, inquiry about the registration of the communication terminal device in the service communication network Circumstances and specification parameter values, these specification parameter values are used to define the specifications of the communication services provided by the service communication network, and at the same time, the communication terminal equipment will also request to provide corresponding communication services for the defined communication services via the access communication network service configuration data; --After receiving the second information transmitted from the control unit to the communication terminal equipment to inform the communication terminal equipment that the registration of the communication terminal equipment in the service communication network has been completed, it is possible to know from the second information that the communication terminal Devices are able to utilize configuration parameter values for defined communication services. 19. A communication terminal device of a communication system, this communication system has a service communication network, an access communication network, and a control unit, the characteristics of this communication terminal device are: --Have a transmission device, the task of this transmission device is to transmit the first information to the control unit via the access communication network, this first information contains the user identity confirmation of the user of the communication terminal equipment, querying the communication terminal equipment The registration status in the service communication network and the specification parameter value, these specification parameter values are used to define the specification of the communication service provided by the service communication network, and at the same time, the communication terminal equipment will also request for the service via the access communication network The defined communication service provides corresponding communication service configuration data; -- have an evaluation device whose task is to receive a second message transmitted from the control unit to the communication terminal equipment to inform the communication terminal equipment that the registration of the communication terminal equipment in the service communication network has been completed , the configuration parameter values enabling the communication terminal equipment to utilize the defined communication services can be known from the second information.

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