WO2009057897A1 - Procédé et système d'enregistrement de position de l'équipement utilisateur de troisième génération (3ge) pour service de sous-système multimédia ip (ims), et procédé de transfert entre réseaux - Google Patents

Procédé et système d'enregistrement de position de l'équipement utilisateur de troisième génération (3ge) pour service de sous-système multimédia ip (ims), et procédé de transfert entre réseaux Download PDF

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Publication number
WO2009057897A1
WO2009057897A1 PCT/KR2008/005767 KR2008005767W WO2009057897A1 WO 2009057897 A1 WO2009057897 A1 WO 2009057897A1 KR 2008005767 W KR2008005767 W KR 2008005767W WO 2009057897 A1 WO2009057897 A1 WO 2009057897A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
server
network
address
ims
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2008/005767
Other languages
English (en)
Inventor
Hyunsuk Roh
Sang-Ho Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
KT Corp
KTFreetel Co Ltd
Original Assignee
Electronics and Telecommunications Research Institute ETRI
KT Corp
KTFreetel Co Ltd
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 Electronics and Telecommunications Research Institute ETRI, KT Corp, KTFreetel Co Ltd filed Critical Electronics and Telecommunications Research Institute ETRI
Publication of WO2009057897A1 publication Critical patent/WO2009057897A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
    • H04W36/00226—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
    • 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
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0019—Control or signalling for completing the hand-off for data sessions of end-to-end connection adapted for mobile IP [MIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present invention relates to a location registering method and system of third generation evolution (3GE) equipment for an IP multimedia subsystem (IMS) service, and more particularly, to a location registering method and system of 3GE equipment between 3GE and IMS networks when the 3GE equipment is moving between domains.
  • 3GE third generation evolution
  • IMS IP multimedia subsystem
  • IP multimedia subsystem (IMS) technology is an open architecture that enables an IP multimedia service in mobile, wired, and convergence environments, and is based on session initiation protocol (SIP) signaling. IMS is being recognized as a core technology for providing new services in a next-generation all-IP-based communication system.
  • SIP session initiation protocol
  • IMS In IMS architecture, applications can be generated, controlled, and modified, regardless of types of networks or platforms, and multimedia communication of images or large capacity data can be efficiently realized. For example, in an IMS based communication system, services such as a real-time one-to-many telephone conversation, two-way mobile games, and a real-time instant messaging service are possible. IMS has been suggested in a process to provide a standard for wireless networks for in- terworking and compatibility between different service networks in an IP based 3G mobile communication system; however, IMS is now widely applied as a core technology supporting not only mobile communication but also next-generation supplementary communication services based on IP networks and integration of wired and wireless communication systems.
  • IMS usually includes three layers: a session control layer, a gateway layer, and an application layer.
  • the session control layer includes servers that enable SIP services, and includes a call session control function (CSCF) and a home subscriber server (HSS).
  • CSCF call session control function
  • HSS home subscriber server
  • a CSCF registers user equipment and routes an SIP signal to an appropriate server.
  • An HSS is developed from a home location register (HLR) of mobile communication, and is a centralized database that controls user information.
  • An HSS has functions of controlling user registration and modification, authentication, authorization, location, session routing, charging, etc.
  • a gateway layer connects an IMS network to other IMS networks with a public switched telephone network (PSTN), or other previous networks.
  • PSTN public switched telephone network
  • An application layer provides SIP-based applications such as game, video, or group chatting, and includes user service logic.
  • a proxy (P)-CSCF that performs an interworking function between networks is defined for use.
  • P proxy
  • the address of the equipment does not change in a system using a mobile IP (MIP), but a P-CSCF server, which is an essential node for network interworking, may be changed.
  • MIP mobile IP
  • a P-CSCF server which is an essential node for network interworking, may be changed.
  • a home domain of an IMS network that performs services of the corresponding equipment may not recognize that the address of the P-CSCF server is changed and thus may transfer messages regarding the corresponding equipment to the previous P-CSCF server.
  • the address of equipment that uses an MIP is not changed during a handover, and thus the binding information of the equipment does not change to an IMS domain, and thus services cannot be provided.
  • QoS quality of service
  • PDN public data network
  • SAE service architecture evolution gateway
  • the present invention provides a location registration method and system of third generation evolution (3GE) user equipment for an IP multimedia subsystem (IMS) service, for transferring an address of a proxy call session control function (P-CSCF) server periodically to user equipment, the user equipment comparing the received address of the P-CSCF server with an address of a previous P-CSCF server to determine whether a handover having the P-CSCF be changed occurs, and registering the corresponding user equipment to an IMS domain through a new P-CSCF server.
  • the present invention also provides a handover method between networks.
  • a method of registering user equipment when the user equipment is handed over from a first network, which interworks with an IP multimedia subsystem (IMS) network that provides an IMS service, to a second network, the method comprising: transferring an address of a server that interworks with the IMS network in the second network to the user equipment; when the address of the received server is a new address, the user equipment transferring a registration request message to the IMS network via the server; and registering the user equipment in response to the registration request message in the IMS network.
  • IMS IP multimedia subsystem
  • a system of registering user equipment when the user equipment is handed over from a first network, which interworks with an IP multimedia subsystem (IMS) network that provides an IMS service, to a second network
  • IMS IP multimedia subsystem
  • the system comprising: a first server located in the second network and interworking with the IMS network; a second server transferring an address of the first server to the user equipment; and a third server registering the user equipment in the IMS network in response to a registration request message, wherein the user equipment transfers the registration request message via the first server to the IMS network, when the received address of the first server is a new address.
  • IMS IP multimedia subsystem
  • a method of handover of user equipment between networks comprising: moving the user equipment from a first network, which interworks with an IP multimedia subsystem (IMS) service, to a second network; informing the user equipment of an address of a first server that interworks with the IMS network in the second network; the user equipment comparing the address of the first server with an address of a second server that interworks with the IMS network in the first network; when the addresses of the first server and the second server are not identical, the user equipment transferring a registration request message to the IMS network via the first server; and registering the user equipment in response to the registration request message by using the IMS network.
  • IMS IP multimedia subsystem
  • a wireless broadband (WiB ro) system user equipment is informed of an address of a new P-CSCF server when the user equipment is handed over in an IMS network, and thus a re-registration process can be performed to an IMS domain. Accordingly, IMS services can be provided more efficiently.
  • FIG. 1 is a schematic view showing interworking between third generation evolution
  • FIG. 2 illustrates a router advertisement (RA) message format according to an embodiment of the present invention
  • FIG. 3 is a flowchart showing a method of registering an address of a new proxy-call session control function (P-CSCF) server when a handover occurs between networks, according to an embodiment of the present invention.
  • P-CSCF proxy-call session control function
  • FIG. 1 is a schematic view showing interworking between third generation evolution
  • 3GE 3GE networks and an IP multimedia subsystem (IMS) network.
  • IMS IP multimedia subsystem
  • the 3GE network 10 includes the user equipment 101, a radio access station 102, a service architecture evolution (SAE) gateway 103, a pubic data network (PDN) SAE gateway 104, and a proxy-cell session control function (P-CSCF) server 105.
  • SAE service architecture evolution
  • PDN pubic data network
  • P-CSCF proxy-cell session control function
  • the radio access station 102 performs a base station function, and the service SAE gateway 103 performs packet access routing and local mobility functions.
  • the PDN SAE gateway 104 has the functions of policy execution and packet filtering, and the P- CSCF server 105 functions as an initial access point for the user equipment 101 to access the IMS network 11.
  • the 3GE network 10 interworks with the IMS network 11 through the P-CSCF server 105, and uses a session initiation protocol (SIP) protocol, which is an Internet engineering task force (IETF) standard protocol, for interactive communication.
  • SIP session initiation protocol
  • IETF Internet engineering task force
  • the IMS network 11 is a next-generation Internet protocol that provides various services using the SIP protocol, and includes various services such as voice over Internet protocol (VoIP), messenger service, etc.
  • VoIP voice over Internet protocol
  • messenger service etc.
  • the IMS network 11 includes a serving (S)-CSCF 111.
  • the S-CSCF 111 registers an
  • SIP of the user equipment 101 controls services while managing state conditions like session setting and cancellation regarding the registered user equipment 101, and provides service resource-related information to the user equipment 101.
  • the address allocated for the user equipment 101 is not changed even when the user equipment 101 is handed off.
  • the user equipment 101 has to be registered again when the P-CSCF server is changed.
  • the address of the P-CSCF server is included in an option field of a router advertisement (RA) message, which is periodically transferred to the user equipment 101, and the user equipment 101 compares addresses of the existing P-CSCF server and a new P-CSCF server to identify a change of the address of the P-CSCF server.
  • RA router advertisement
  • FIG. 2 illustrates an RA message format according to an embodiment of the present invention.
  • a Type field is a 1-byte field, having a value for identifying a type of a message.
  • An RA message has a value of 134.
  • a Code field is an unused field and has a value of 0.
  • a Checksum field is a 2-byte field and has a checksum value regarding a header.
  • a Cur Hop Limit field is a 1-byte field, requesting servers of the 3GE network 10 a hop limit field value.
  • M and O are respectively 1-bit flags indicating how to perform autoconfiguration for the 3GE network 10.
  • a Router Lifetime field is a 2-byte field, indicating for how many seconds the servers of the 3GE network 10 receive the RA message.
  • a Reachable Time field is a 4-byte field, and indicates for how many miliseconds the servers of the 3GE network 10 can access neighboring servers.
  • a Re trans Timer field is a 4-byte field, and indicates at how many millisecond intervals it re-transfers the RA message.
  • An option field may include information to be added to the RA message.
  • CSCF server is included in an Option field in the RA message in order to inform the user equipment 101 of an address of the P-CSCF server of a newly entered network.
  • FIG. 3 is a flowchart illustrating a method of registering an address of a new P-CSCF server during a handover between networks, according to an embodiment of the present invention.
  • the user equipment 101 transmits or receives a signal message through an IMS network 11 in the current 3GE network 10 in operation 301, when a handover to another 3GE network occurs in operation 302, an RA message is received from a new service SAE gateway of another network in operation 303.
  • the user equipment 101 reads an address of a new P-CSCF server in an option field of the received RA message, compares the address of the new P-CSCF server with the address of the existing P-CSCF server 105 to identify a new address.
  • the user equipment 101 transfers an SIP registration request message to the S-CSCF server 111 of the IMS network 11 through the new P-CSCF server, and the S-CSCF server 111 binds a location and an SIP address of the user equipment 101 together so as to register the bound result again, in operation 304. Afterwards, the user equipment 101 transmits or receives a signal message from another 3GE network through the IMS network 11, in operation 305.
  • the invention can also be embodied as computer readable codes on a computer readable recording medium.
  • the computer readable recording medium is any data storage device that can store data which can be thereafter read by a computer system. Examples of the computer readable recording medium include read-only memory (ROM), random-access memory (RAM), CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, and carrier waves such as data transmission through the Internet.
  • the computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

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

Abstract

L'invention concerne un procédé et un système d'enregistrement de position d'un équipement utilisateur de troisième génération (3GE) pour un service de sous-système multimédia IP (IMS). Le procédé d'enregistrement d'équipement utilisateur, lorsque ledit équipement est transféré d'un premier réseau, qui interagit avec un réseau de sous-système multimédia IP (IMS) qui fournit un service IMS, à un second réseau, consiste: à transférer une adresse d'un serveur, qui interagit avec le réseau d'IMS dans le second réseau, à l'équipement utilisateur; lorsque l'adresse du serveur reçu est une nouvelle adresse, L'équipement utilisateur transférant un message de demande d'enregistrement au réseau IMS via le serveur; et enregistrant l'équipement utilisateur en réponse au message de demande d'enregistrement dans le réseau IMS.
PCT/KR2008/005767 2007-10-30 2008-10-01 Procédé et système d'enregistrement de position de l'équipement utilisateur de troisième génération (3ge) pour service de sous-système multimédia ip (ims), et procédé de transfert entre réseaux Ceased WO2009057897A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070109612A KR20090043832A (ko) 2007-10-30 2007-10-30 아이.피. 멀티미디어 서브시스템 서비스를 위한 3ｇｅ단말의 위치 등록 방법, 그 시스템 및 3ｇｅ 단말의 망간핸드오버 방법
KR10-2007-0109612 2007-10-30

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Publication Number Publication Date
WO2009057897A1 true WO2009057897A1 (fr) 2009-05-07

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PCT/KR2008/005767 Ceased WO2009057897A1 (fr) 2007-10-30 2008-10-01 Procédé et système d'enregistrement de position de l'équipement utilisateur de troisième génération (3ge) pour service de sous-système multimédia ip (ims), et procédé de transfert entre réseaux

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KR (1) KR20090043832A (fr)
WO (1) WO2009057897A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011050733A1 (fr) * 2009-10-29 2011-05-05 华为技术有限公司 Procédé, appareil et système de communication pour services centralisés de sous-système multimédia à protocole internet (ip) (ims)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060021467A (ko) * 2004-09-03 2006-03-08 에스케이 텔레콤주식회사 휴대인터넷망과 타 통신 망과의 연동 기능을 제공하는방법 및 시스템
US20060120287A1 (en) * 2004-12-03 2006-06-08 George Foti Seamless handoff for multimedia services
WO2006100459A2 (fr) * 2005-03-22 2006-09-28 Orange Sa Appareil et procede de telecommunication
KR100756977B1 (ko) * 2006-09-28 2007-09-07 한국전자통신연구원 휴대 인터넷 망과 인터넷 프로토콜 멀티미디어 서브시스템연동망에서 단말의 핸드오버 방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060021467A (ko) * 2004-09-03 2006-03-08 에스케이 텔레콤주식회사 휴대인터넷망과 타 통신 망과의 연동 기능을 제공하는방법 및 시스템
US20060120287A1 (en) * 2004-12-03 2006-06-08 George Foti Seamless handoff for multimedia services
WO2006100459A2 (fr) * 2005-03-22 2006-09-28 Orange Sa Appareil et procede de telecommunication
KR100756977B1 (ko) * 2006-09-28 2007-09-07 한국전자통신연구원 휴대 인터넷 망과 인터넷 프로토콜 멀티미디어 서브시스템연동망에서 단말의 핸드오버 방법 및 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011050733A1 (fr) * 2009-10-29 2011-05-05 华为技术有限公司 Procédé, appareil et système de communication pour services centralisés de sous-système multimédia à protocole internet (ip) (ims)

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