WO2005039104A1 - Procede et appareil d'implementation d'un service de multidiffusion de protocole internet dans un systeme de communication mobile - Google Patents

Procede et appareil d'implementation d'un service de multidiffusion de protocole internet dans un systeme de communication mobile Download PDF

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Publication number
WO2005039104A1
WO2005039104A1 PCT/CN2003/000724 CN0300724W WO2005039104A1 WO 2005039104 A1 WO2005039104 A1 WO 2005039104A1 CN 0300724 W CN0300724 W CN 0300724W WO 2005039104 A1 WO2005039104 A1 WO 2005039104A1
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WO
WIPO (PCT)
Prior art keywords
ggsn
apn
data structure
user
msisdn
Prior art date
Application number
PCT/CN2003/000724
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English (en)
Chinese (zh)
Inventor
Jie Feng
Dongliang Liu
Original Assignee
Utstarcom(China)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 Utstarcom(China)Co.Ltd. filed Critical Utstarcom(China)Co.Ltd.
Priority to AU2003261578A priority Critical patent/AU2003261578A1/en
Priority to CNB038269236A priority patent/CN100375423C/zh
Priority to PCT/CN2003/000724 priority patent/WO2005039104A1/fr
Publication of WO2005039104A1 publication Critical patent/WO2005039104A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation

Definitions

  • the present invention relates to Internet Protocol (IP) multicast technology, and in particular, to a method and apparatus for providing IP multicast services in a mobile communication system.
  • IP Internet Protocol
  • IP Multicasting IP Multicasting
  • IP Multicasting IP Multicasting
  • IGMP Internet Group Multicast Protocol
  • a first object of the present invention is to provide a method for providing an IP multicast service in a mobile communication system.
  • a second object of the present invention is to provide an apparatus for providing an IP multicast service in a mobile communication system.
  • the present invention provides a method for implementing an Internet Protocol (IP) multicast service in a mobile communication system.
  • the mobile communication system includes a General Packet Radio Service Gateway Support Node (GGSN) and a domain name server ( DNS), the method is characterized by including the following steps:
  • GGSN Receiving, by the GGSN, an access point name (APN) and multiple mobile station international integrated services digital network (MSISDN) numbers;
  • APN access point name
  • MSISDN multiple mobile station international integrated services digital network
  • the present invention provides a network device used as a general packet wireless service gateway support node (GGSN) in a mobile communication system, which is characterized by including:
  • API access point name
  • MSISDN mobile station international integrated services digital network
  • DNS domain name server
  • PDP packet data protocol
  • the present invention also provides a computer-readable program storage medium storing computer program code for instructing a general packet radio service gateway support node (GGSN) in a mobile communication system to perform operations.
  • the program Storage media are characterized by:
  • a code device for receiving an access point name (APN) and multiple mobile station international integrated services digital network (MSISDN) numbers;
  • API access point name
  • MSISDN mobile station international integrated services digital network
  • DNS domain name server
  • a code device for establishing a data structure in the GGSN where the data structure is used to store the APN, the multiple MSISDN numbers, and is reserved in the data structure for each of the MSISDN numbers
  • PDP packet data protocol
  • the method and device of the present invention adopt a powerful portal service platform in a general packet wireless service gateway support node (GGSN), a public data network (PDN), or a public data network (PDN) that supports multiple access point names (APN) and dynamic APN.
  • GGSN general packet wireless service gateway support node
  • PDN public data network
  • APN access point names
  • dynamic APN dynamic APN
  • many new services can be provided for mobile data users.
  • a typical application of this type of new service is to implement a user group chat function between mobile data users similar to MSN or QQ provided by Microsoft (Microsoft) Corporation in a fixed IP network.
  • such new services are referred to as mobile virtual data user group services.
  • the mobile virtual data user group service will bring many new mobile data users to mobile operators, which is of great significance to mobile operators.
  • the present invention is applied in a public land mobile network (PLMN), regardless of how many GGSNs are configured in the network.
  • PLMN public land mobile network
  • FIG. 1 is a schematic structural diagram of a mobile communication system in which the present invention is implemented
  • FIG. 2 is a schematic flowchart of an operation of implementing an IP multicast service in a mobile communication system according to an embodiment of the present invention
  • FIG. 3 is a schematic message flow diagram of a process of creating a user group in the embodiment shown in FIG. 2;
  • FIG. 4 is a schematic diagram of an example of a data transmission process when an IP multicast service is implemented after the user group is created;
  • FIG. 5 is a schematic message flow diagram of a user group deletion process initiated by a user
  • 6 is a schematic message flow diagram of a user group deletion process initiated by a GGSN
  • FIG. 7 is a schematic structural diagram of a network device used as a general packet wireless service gateway support node (GGSN) in a wireless communication system according to the present invention.
  • FIG. 1 is a schematic structural diagram of a mobile communication system in which the present invention is implemented.
  • the mobile communication system includes three basic parts, namely a core network indicated by reference numeral 3, a universal mobile communication system (UMTS) terrestrial radio access network (UTRAN) indicated by reference numeral 4, and a user equipment indicated by reference numeral 5. .
  • UMTS universal mobile communication system
  • UTRAN terrestrial radio access network
  • user equipment indicated by reference numeral 5.
  • the user equipment 5 may be, for example, a mobile phone with a subscriber identity module (USIM) in a Universal Mobile Telecommunications System (UMTS). Of course, in order to implement the present invention, the user equipment 5 needs to satisfy some conditions, which will be described later.
  • the user equipment 5 is connected to the UMTS Terrestrial Radio Access Network (UTRAN) 4 through an air interface (for example, a wireless interface).
  • UTRAN Universal Mobile Telecommunications System
  • the UMTS Terrestrial Radio Access Network (UTRAN) 4 includes at least one Radio Network Controller (RNC) 141 (although only one is shown in the figure) and multiple nodes-B 142.
  • Node-B 142 is used as a base station in the third generation mobile communication system, and communicates with multiple user equipments 5.
  • Each wireless network controller 141 is connected to a corresponding plurality of nodes-B 142 through a ground line or a microwave, and controls the nodes-B 142 connected thereto. Therefore, in some networks, the wireless network controller 141 is also called a base station controller (BS).
  • BS base station controller
  • Each wireless network controller 141 is connected to the core network 3.
  • the core network 3 includes at least two domains, namely a circuit switched domain (CS domain) and a packet switched domain (PS domain).
  • the radio network controller 141 assigns a message, or a call session, from the user equipment 5 to a circuit switched domain or a packet switched domain.
  • the circuit switched domain includes a mobile switching center / visit location register (MSC / VLR) 132, and a gateway mobile switching center (GMSC) 131.
  • the mobile switching center (MSC) is responsible for all switching and signaling functions of the user equipment 5 within its jurisdiction.
  • the visit location register (VLR) is a database that stores user preset data, related identification and user equipment location information.
  • the support node (SGSN) 135 jointly performs mobility management.
  • the packet switching domain includes a GPRS Service Support Node (SGSN) 135 and a GPRS Gateway Support Node (GGSN) 134.
  • GPRS refers to the general packet radio service.
  • the GPRS service support node (SGSN) 135 is equivalent to the mobile switching center / visit location register (MSC / VLR) in the traditional GSM system. Its main function is to perform authentication and mobility management on user equipment 5, perform routing selection, and establish users.
  • the transmission channel from the device 5 to the GGSN 134 receives the data sent by the user equipment 5 from the UTRAN 4, performs protocol conversion, and transmits the data to the GGSN 134 through the GPRS backbone network (not shown), or works in the reverse direction and performs charging And business statistics.
  • the SGSN 135 When the GPRS is attached, the SGSN 135 establishes an MM (Mobility Management) context, which contains information related to the mobility and security of the user equipment 5.
  • MM Mobility Management
  • PDP Packet Data Protocol
  • 8081 135 and 008 ⁇ 134 establish one? 0? Context, used for routing purposes.
  • the GPRS gateway supports a node (GGSN) 134, which is a node that accesses an external data network.
  • GGSN 134 is a sub-network router.
  • the GGSN 134 receives the data sent by the user equipment 5, chooses to route to the corresponding external network, or receives the data from the external network, selects the transmission channel in the GPRS network according to its address, and transmits it to the corresponding SGSN 135.
  • the external packet data network accesses the GGSN 134.
  • This address contains the routing information of the GPRS-attached user. This routing information is used to tunnel the PDU (packet data unit) to the current node of the user equipment 5, namely, the SGSN 135.
  • GGSN 134 is the first entry point for public data network (PDN) 2 and core network 3 described below, which is the Gi reference point supported by GGSN 134.
  • HLR 133 is a database that stores user preset data and routing information. For GPRS, HLR 133 also stores location information such as the SGSN number currently registered by user equipment 5, various identifications of mobile users, and information about services.
  • the GPRS gateway support node (GGSN) 134 is connected to the public data network (PDN) 2.
  • the public data network (PDN) 2 may be the Internet, X.25 / X.75 and other networks.
  • the public data network 2 shown in FIG. 1 is the Internet, which includes a portal 121 and a router 122.
  • the gateway mobile switching center (GMSC) 131 is connected to a public switched telephone network / Integrated Services Digital Network (PSTN / ISDN) 1.
  • PSTN / ISDN Integrated Services Digital Network
  • FIG. 1 In order to implement the present invention, the components shown in FIG. 1 have the following requirements.
  • the user equipment 5 supports multiple access point names (APNs), that is, mobile users can use the user equipment 5 to set a new APN.
  • APNs access point names
  • APN access point names
  • APN is a network name of an external packet data network, and corresponds to a physical interface or a serial interface in the GGSN 134.
  • APN parameters represent the combination of application services provided by the mobile network to users.
  • PLMN public land mobile networks
  • the internal GPRS DNS (Domain Name System) function is needed to translate APN into the IP address of GGSN.
  • APN consists of two parts:
  • APN network logo which defines the external network to which the GGSN can connect, is assigned to the ISP by the network operator, and its uniqueness is guaranteed, which is equivalent to the domain name of the ISP;
  • APN operator logo which defines the PLMN GPRS backbone network where the GGSN is located, in the form "mnc ⁇ MNC> .mcc ⁇ MCO.gprs", which is used to mark the home network.
  • MNC is a mobile network code
  • MCC is a mobile country code.
  • the AP network identification is usually stored in the home location register (HLR) 133 as user subscription data.
  • HLR home location register
  • the user can also provide the SGSN 135 with a decision to access the corresponding external network.
  • the user's wildcard APN can be included in the home location register (HLR) 133, that is, a single "* ", Its length byte is 1.
  • HLR home location register
  • the SGSN 135 receives the wildcard APN, when the PDP context is activated, it can choose the APN network flag received from the user equipment 5 or the default APN network flag to address the GGSN 134. That is, the user or the SGSN 135 can choose to access an APN that is not stored in the HLR 133.
  • the Domain Name System is used by SGSN 135 and GGSN 134 to resolve APN.
  • a domain name server (not shown) is used to provide 32-bit IP addresses and symbolic names. Mechanism for converting between, for example, www.chinamobile.com to 291.100.7.97.
  • DNS can complete this conversion function because it has a database that contains the correspondence between IP addresses and symbolic names. When the local DNS cannot find the relevant data, it can access the upper-level DNS for query. There are currently 8 top-level DNS worldwide.
  • the user equipment 5 In addition to supporting multiple APNs, the user equipment 5 also needs to be installed with chat software or software with similar functions.
  • the domain name system (DNS) is required to dynamically add or delete APN records.
  • GGSN 134 also needs to support multiple APNs and dynamic APNs to be able to dynamically update DNS.
  • GGSN 134 may be a MovingMedia WCDMA GGSN8000 product manufactured by UTStarcom.
  • MovingMedia WCDMA GGSN8000 produced by UTStarcom can be used as the GGSN in each embodiment of the present invention
  • the method and device of the present invention can also be used in GPRS / EDGE (Enhanced Data rates for Global Evolution, that is, Improved data rate GSM service), adopted in CDMA2000. That is, the type of mobile communication system does not constitute a limitation on the present invention.
  • the portal 121 communicates with the short message service center (SMSC) 6, so that the short message can be sent to the user equipment 5 through the short message service center (SMSC) 6.
  • SMSC short message service center
  • the portal 121 and the GGSN 134 communicate using the Remote Authentication Dial-In User Service (RADIUS) protocol.
  • RADIUS is used to control the access, authentication, and accounting of remote users who dial into a server to obtain network services.
  • the RADIUS protocol is described, for example, in "RADIUS: Remote Authentication Dial-In User Service: Remote Network Access Security in an Open Systems Environment” at http: ⁇ www.kmj.com/radius.html.
  • the RADIUS protocol works below the application layer and is usually implemented in network devices in a way that is closely integrated with the functions implemented by the device.
  • the GGSN 134 acts as a RADIUS client and the portal 121 acts as a RADIUS server.
  • HLR home location register
  • APNs need to be configured as "*" (that is, Wildcard APN) PDP context data, so that when the mobile user uses the newly created APN, the SGSN 135 addresses the GGSN 134 through the new APN.
  • FIG. 2 is a schematic flowchart of an operation of implementing an IP multicast service in a mobile communication system according to an embodiment of the present invention.
  • the steps in Figure 2 are shown in four columns.
  • the first column indicates the operations performed by the user equipment (initiating user equipment or invited user equipment).
  • the second column shows the operations in the core network 3, especially in the GGSN 134.
  • the third column indicates operations in the portal 121.
  • the fourth column indicates operations in the short message service center 6.
  • an originating user equipment such as an end user equipment in WCDMA, accesses portal 121 using a specific APN (that is, an APN corresponding to portal 121).
  • This data access request arrives at the portal 121 in the public data network 2 via the GGSN 134 (equivalent to a router) and the router 122.
  • the portal 121 in response to the received data access request, sends a user group creation web page to the initiating user device via the router 122 and the GGSN 134.
  • the user group creation webpage is used to collect information necessary for creating a user group from the initiating user device, such as a new APN to identify the new user group, and the MSISDN number of the user device to invite to join the new user group.
  • the portal 121 may define a new APN for identifying a new user group without having to ask the originating user equipment.
  • the user group creation web page is pre-written and stored in the portal 121.
  • User group web pages can be written using Hypertext Markup Language (HTML) or Wireless Markup Language (WML) or other applicable languages. Different webpage writing languages do not constitute a limitation on the present invention.
  • the initiating user equipment receives a user group creation page.
  • the user who initiated the user device clicks the hyperlink in the user group creation page, and enters the information required to create the user group step by step under the guidance of the page wizard.
  • the information includes, for example, a new APN for identifying a new user group, an MSISDN number of a user equipment to be invited to join the new user group, and the like.
  • the above information entered by the user is used as a parameter for creating a new user group.
  • the initiating communication between the user device and the portal 121 may use Hypertext Transfer Protocol (HTTP) or Wireless Access Protocol (WAP) or other applicable protocols.
  • HTTP Hypertext Transfer Protocol
  • WAP Wireless Access Protocol
  • the communication protocol between the originating user equipment and the portal 121 does not constitute a limitation on the present invention.
  • step 204 after the portal 201 has collected the parameters for creating a new user group, The portal sends parameters such as the new APN and the MSISDN numbers of all the user equipments to be invited to the GGSN 134 through the RADIUS interface, and waits for the GGSN 134 to respond.
  • the portal 121 functions as a RADIUS server.
  • the GGSN 134 which is a RADIUS client, generates a specific policy for the new APN received for the new APN, and then adds feature information of the new APN to the APN feature table of the GGSN 134.
  • the AP feature table describes the attributes of all APNs supported by the GGSN.
  • the attributes of each APN include, for example, the authentication method, IP address allocation method, and access method of the APN.
  • the following table is an example of APN feature table in GGSN.
  • the specific content of the APN feature table does not constitute a limitation on the present invention.
  • the GGSN 134 instructs the DNS to add a record in its domain name database that includes the new APN and the IP address of the GGSN 134.
  • the GGSN 134 creates a virtual user group within the GGSN 134 based on all the received MSISDN numbers.
  • This creation process includes, for example, the following steps: Establish a data structure inside the GGSN to store the new APN and multiple MSISDN numbers received, and reserve one for each MSISDN number in the data structure for storing the PDP
  • the storage space of the address and thus the information stored in the newly created data structure identifies the information of a newly created user group.
  • This new user base is identified by the new APN.
  • the data structure here can adopt various feasible structures, such as arrays, linked lists, trees, etc., or database tables. Different data structures do not constitute a limitation on the present invention.
  • the GGSN 134 sends a response message to the portal 121 through the RADIUS interface, which is used to notify the portal 121 that a new user group has been successfully created.
  • the portal 121 receives a response message from the GGSN 134, Initiate the user device to send a prompt that a new user group is created.
  • the portal 121 sends a notification of the new APN to the invited user equipment, for example, through the short message service center 6.
  • step 210 after the initiating user equipment receives a prompt that the new user group is successfully created from the portal 121, it can disconnect from the portal 121 and access the new APN, that is, access the newly created user group.
  • step 212 after receiving the instruction from the portal 121, the short message service center 6 sends a short message to the invited user equipment, and the content of the short message includes at least the APN used to identify the user group just created. APN.
  • step 213 it is assumed that if thousands of invited user equipments receive the short message of the above content sent by the short message service center 6, and then access the APN of the new user group.
  • step 214 in GGSN 134, for each user equipment accessing the new APN, the PDP context of the user equipment is activated, and the PDP address of the user equipment is stored in the data structure of the user group identified by the new APN. In the data structure of the user group, the PDP address is stored in a space reserved for the MSISDN number of the user equipment for storing the PDP address.
  • GGSN 134 provides IP multicast services for multiple user equipments corresponding to these PDP addresses based on multiple PDP addresses stored in the data structure of the user group.
  • FIG. 3 is a message flow diagram of the process of creating a user group in the embodiment shown in FIG. 2.
  • Figure 3 shows only one example.
  • a PDP context activation process of a user equipment is completed.
  • the GGSN 134 sends a RADIUS address notification message to the portal 121, that is, a RADIUS Addr Notification (MSISDN, GGSN IP address).
  • MSISDN RADIUS Addr Notification
  • the MSISDN number in the message is the MSISDN number of the user equipment that initiated the creation of the user group.
  • RADIUS UTS extended messages The various RADIUS messages described here and below are messages obtained by the inventor after extending RADIUS, and are sometimes referred to as RADIUS UTS extended messages.
  • the above RADIUS address notification message will notify the portal 121: the MSISDN number of the user equipment that initiated the creation of the new user group (also may carry the International Mobile Subscriber Identity (IMSI) letter Information), and the address of the corresponding RADIUS client on the GGSN 134 side.
  • IMSI International Mobile Subscriber Identity
  • step 303 the portal 121 guides the user of the user equipment to complete the user group creation process, which may include verification of the identity of the user. At the same time, the user needs to be bound to the corresponding RADIUS client on the GGSN 134 side.
  • the portal 121 transmits the information entered by the user to the GGSN 134 through a RADIUS add user group request message, that is, a RADIUS Add Group Request (APN, MSISDN1, MSISDN2 ).
  • the RADIUS add user group request message here is a reverse RADIUS UTS extended odd request message, which transmits the APN used to identify the new user group and the MSISDN number of each user in the new user group to the GGSN 134.
  • GGSN 134 will add APN, update DNS, and create a temporary user group. For example, a data structure is established for the new user group as described above with reference to FIG. 2.
  • the GGSN 134 also returns a message indicating the success or failure of the creation to the portal 121, that is, a RADIUS Add Group Ack or a RADIUS Add Group Reject.
  • step 305 the gate 121 sends an invitation short message to the invited user device through the short message service center 6.
  • a user group there are various ways to create a user group. It may be a fixed user accessing the portal 121 through a personal computer (PC) through the Internet instead of a wireless data network, and completing the process of creating a virtual user group. In this case, it is up to the portal 121 to decide which GGSN to use. It is also possible to create a virtual user group through a user management system (SAM, not shown) of the mobile communication system, which uses the same interface as the portal 121, that is, an interface based on the RADIUS protocol.
  • SAM user management system
  • the communication between the user equipment and the portal 121 may adopt multiple protocols.
  • a wireless access protocol WAP
  • WAP wireless access protocol
  • the network defined in the 3G specification can also be used to initiate a PDP context activation process and push (PUSH) service to complete the user invitation process.
  • PDP context activation process PDP context activation process
  • PUSH push
  • the following describes the data transfer process for users in the successfully created user group.
  • the GGSN 134 After the virtual user group is successfully created, for any IP data packet whose destination address is a user in the user group, the GGSN 134 will transmit the data packet to all other users in the user group in real time by using multiple copies. Data transmission is transparent to devices such as SGSN 135, UTRAN 4. Using the above data transmission process, IP multicast services are implemented for the created user groups.
  • FIG. 4 is a diagram illustrating an example of a data transmission process when an IP multicast service is implemented after a user group is created.
  • the GGSN 134 will The online status of the data, the data is copied in multiple copies, and the data is transmitted to the appropriate SGSN 135 according to the user PDP context information.
  • the data packets copied here by the GGSN 134 and transmitted to the appropriate SGSN 135 are, for example, data between users in the user group or broadcast information to users in the user group.
  • the copy and transfer process is shown in steps 401a to 401n in FIG. 4, for example.
  • step 402 the SGSN 135 transmits the received data packet to the corresponding user equipment via the UTRAN 4, just like transmitting a normal data packet.
  • the replication and transmission of the data packets implemented through steps 401 and 402 are transparent to the SGSN 135, UTRAN 4 and user equipment (for example, user equipment 5).
  • a user who creates a user group deletes the user group by logging in to the door 121, under the guidance of the web page provided by the portal 121, or using the user management system of the mobile communication system to delete the user group through the same interface.
  • the user group deletion process described above is called a user-initiated user group deletion process.
  • the GGSN 134 can also automatically delete a user group according to the activity status of the user group. For example, if a user in a user group is inactive for a configurable period of time (such as 1 hour), GGSN 134 will automatically initiate a user group deletion process.
  • FIG. 5 is a message flow diagram of a user group deletion process initiated by a user.
  • step 501 a PDP context activation process of a user equipment that initiates creation of a user group is completed.
  • the portal 121 provides a web page to guide the user through the deletion process of the user group.
  • the portal 121 sends a RADIUS delete user group request to the GGSN 134, that is, a RADIUS UTS extended message RADIUS Delete Group Request (APN).
  • RADIUS UTS extended message RADIUS Delete Group Request API
  • the GGSN 134 After the GGSN 134 receives the RADIUS user group deletion request, it deletes the APN, updates the DNS, and deletes the user group, including deleting the data structure of the user group. The GGSN 134 will then respond to the portal 121 with a message indicating that the deletion was successful or failed.
  • FIG. 6 is a message flow diagram of the user group deletion process initiated by the GGSN.
  • a RADIUS user group deletion notification is sent to the portal 121 in step 601, that is, a RADIUS UTS extended message RADIUS Group Delete Notification (APN).
  • the portal 121 deletes the user group and the resources allocated for the user group on the portal 121.
  • the resources allocated for the user group on the portal 121 may include storage resources allocated for storing user information of the user group, storage resources allocated for charging users of the user group, database resources, and the like.
  • the following describes the interface design between the GGSN 134 and the portal 121 or the user management system of the mobile communication system.
  • the interface between the GGSN 134 and the portal 121 or the user management system is implemented by extending the RADIUS protocol.
  • Added RADIUS message types include:
  • the GGSN 134 sends a RADIUS address notification message to the portal 121, and notifies the portal 121 of the MSISDN number of the initiating user equipment and the IP address of the GGSN 134.
  • the portal 121 After establishing or receiving the APN of the new user group and receiving the MSISDN number of the user device to be invited from the initiating user device, the portal 121 sends a RADIUS add user group request message to the GGSN 134, and notifies the GGSN 134 of the new user group APN and the MSISDN number of each user equipment to be invited to join the new user group, such as MSISDN 1, MSISDN 2,... and so on.
  • the GGSN 134 After the GGSN 134 completes the creation of the user group, it sends a RADIUS Add User Group Response message to the portal 121, informing the portal 121 that the user group has been successfully created.
  • GGSN 134 sends a RADIUS add user group rejection message to the portal 121, notifying the portal 121 that the user group cannot be created.
  • the portal 121 sends a RADIUS delete user group request to the GGSN 134.
  • the request specifies the identifier APN of the user group to be deleted.
  • the GGSN 134 After the GGSN 134 successfully deletes the user group, it sends a RADIUS delete user group response to the portal 121 to notify the user group that the user group has been deleted successfully.
  • GGSN 134 When GGSN 134 cannot delete the user group successfully, it sends a RADIUS delete user group rejection to the portal 121, notifying that the user group cannot be deleted successfully.
  • RADIUS Group Delete Notification (User Group Delete Notification) Call Format: RADIUS Group Delete Notification (APN)
  • GGSN 134 In the user group deletion process initiated by GGSN, after GGSN 134 successfully deletes the user group identified by APN, it sends a RADIUS user group deletion notification to portal 121 to inform portal 121 that the user group identified by APN has been GGSN 134 deleted.
  • Unified format In the present invention, all messages contain only one attribute (Attribute), that is, the 26th type attribute in the RADIUS protocol-the vendor-specific attribute (Vendor-Specific).
  • IE information element
  • UTS encoding UTS encoding. The following describes the RADIUS attributes, vendor-specific attributes, and UTS codes used in the present invention one by one as follows.
  • RADIUS attributes carry specific authentication, authorization, information, and configuration details for requests and responses.
  • the end of the attribute list is determined by the length of the RADIUS packet.
  • the format of the attributes is shown in Table 1.
  • Table 1 Format type length of RADIUS attributes
  • the type field is an octet.
  • the value of the latest RADIUS type field is specified in the most recent "Assigned Numbers" RFC [6]. Values 192-223 are reserved for testing purposes, values 224-240 are reserved for specific use, and values 241-255 are reserved and should not be used.
  • the RADIUS server can ignore attributes of unknown types.
  • RADIUS clients can also ignore unknown types of attributes. In the present invention, only an attribute with a value of 26 is used, that is, a vendor-specific attribute (Vendor-Specific).
  • the length field is also an octet indicating the length of this attribute (including the type field, the length field, and the value field).
  • the range is zero or more octets and contains attribute-specific information.
  • the format of the range is determined by the type field and the length field.
  • vendor-specific attributes This attribute allows vendors to extend attributes to support their own attributes that are not suitable for general use. It cannot affect the operation of RADIUS.
  • the format of vendor-specific attributes is shown in Table 2.
  • Table 2 Format of vendor-specific attributes
  • the value of the type field is 26.
  • the value of the length field is greater than or equal to 7.
  • the vendor ID is 4 octets. Among them, the value of the upper octet is 0, and the lower three octets are the manufacturer's network byte order SMI network management dedicated enterprise code. Vendor ID The values are defined in the "Assigned Numbers" RFC [6]. In the present invention, the value of the vendor ID field is 0422, which represents UTStarcom.
  • a string field is one or more octets.
  • the allowed range of string domains is not specified in the RADIUS protocol.
  • the string fields must be encoded in the order of fields such as vendor type / vendor length / attribute-specific values.
  • the attribute-specific value is determined by the manufacturer's definition of the attribute.
  • An example of encoding vendor-specific attributes using this method is shown in Table 3.
  • Table 3 Examples of encoding of string fields in vendor-specific attributes
  • the definitions of the type field, length field, and vendor ID field are the same as those in Table 2.
  • the vendor type is defined as follows: (1) When the vendor type value is 1, it indicates that the attribute specific value is the MSISDN number; (2) When the vendor type value is 2, it indicates that the attribute specific value is the GGSN IP address, that is, the RADIUS client IP address;
  • Vendor length can represent the total length of vendor type + vendor length + attribute specific value.
  • the vendor length can also be defined as a length representing only a specific value of an attribute.
  • the length of the MSISDN number The encoding format of the MSISDN number fully complies with the standards of the 3rd Generation Partnership Project (3GPP), and uses the BCD code format, that is, the binary-decimal code format. Therefore, the length of the MSISDN code is fixed, and the length is, for example, eight octets.
  • 3GPP 3rd Generation Partnership Project
  • the length of the IP address of the GGSN is a network byte order IP address code, and its length is four octets.
  • APN is coded according to the format defined by the 3GPP specification, and its length is also fixed, and its length is, for example, sixteen octets.
  • the string fields shown in Table 2 may contain one or more combinations of vendor type / vendor length ⁇ / attribute specific values as shown in Table 3.
  • the vendor-specific attributes are shown in Table 4, for example. Table 4: Examples of vendor-specific attributes for RADIUS address notification messages
  • FIG. 7 is a schematic structural diagram of a network device used as a general packet radio service gateway support node (GGSN) in a wireless communication system according to the present invention.
  • GGSN general packet radio service gateway support node
  • the network device of the present invention includes a controller 700, which controls the work of main components, such as a DNS management device 701, an AP feature table management device 702, an IP multicast service implementation device 703, and a user group management device. 704.
  • the user equipment activation device 705, the input / output device 706, and other components work.
  • the APN feature table management device 702 is responsible for managing the APN feature table 707.
  • the user group management device 704 is responsible for managing the user group data storage device 708.
  • the input / output device 706 is used to receive an access point name (APN) and a plurality of mobile station international integrated services digital network (MSISDN) numbers from, for example, portal 121 or user management of a mobile communication system.
  • APN access point name
  • MSISDN mobile station international integrated services digital network
  • the APN feature table management device 702 is configured to generate a received APN policy and add the feature information of the APN to the APN feature table 707.
  • the DNS management device 701 is configured to instruct a domain name server (DNS) in the mobile communication system to add a record including the above-mentioned APN and the current GGSN IP address to the DNS database.
  • DNS domain name server
  • the user group management device 704 is configured to establish a data structure in the current GGSN. Such a data structure is stored in the user group data storage device 708, for example.
  • the data structure is used to store the above APN and multiple MSISDN numbers, and a storage space for storing a packet data protocol (PDP) address is reserved for each MSISDN number in the data structure, so that the information identifier stored in the data structure is identified A newly created user base.
  • the network device shown in FIG. 7 further includes a user equipment activation device 705 for activating a PDP context of a user equipment.
  • the controller 700 When the MSISDN number in the activated PDP context is the same as an MSISDN stored in the user group data structure stored in the user group data storage device 708, the controller 700 also controls the user group management device 704 to store the PDP address in the PDP context into The user group data structure is reserved in the storage space for storing the PDP address for the MSISDN number.
  • the IP multicast service implementation device 703 is configured to provide an IP multicast service for the current user group according to a plurality of PDP addresses stored in a data structure stored in the user group data storage device 708.
  • the specific implementation process of the IP multicast service may be that when the destination address of an IP data packet is the same as a PDP address stored in the data structure of a user group, the IP multicast service implementation device 703 sends the IP data packet multiple times The copy mode is transmitted to other PDP addresses stored in the data structure in real time.
  • the user group management device 704 can also delete the data structure of a certain user group stored in the user group data storage device 708. This deletion operation may be initiated by a portal (for example, portal 121), or may be initiated by a user management system (not shown) of the mobile communication system.
  • the controller 700 may also instruct the user group management device 704 to delete the data structure of the inactive user group from the user group data storage device 708 when a user in a user group is found to be inactive after a predetermined period of time.
  • the present invention also provides a computer-readable program storage medium on which computer program code for guiding operations of a General Packet Radio Service Gateway Support Node (GGSN) in a mobile communication system is stored.
  • GGSN General Packet Radio Service Gateway Support Node
  • Such a program storage medium may be a magnetic disk, a magnetic tape, an optical disk, a magneto-optical disk, a read-only memory (ROM), an electrically programmable read-only memory (EPROM), and the like.
  • ROM read-only memory
  • EPROM electrically programmable read-only memory
  • the program storage medium provided by the present invention includes:
  • a code device for receiving an access point name (APN) and multiple mobile station international integrated services digital network (MSISDN) numbers;
  • API access point name
  • MSISDN mobile station international integrated services digital network
  • a database used to indicate the name server (DNS) in the mobile communication system in the DNS A code device including a record of the IP address of the APN and GGSN is added to the code device; a code device for establishing a data structure in the GGSN, the data structure is used to store the APN, the multiple MSISDN numbers, and In the data structure, a storage space for storing a packet data protocol (PDP) address is reserved for each of the above MSISDN numbers, so that the information stored in the data structure identifies a newly established user group.
  • PDP packet data protocol
  • the program storage medium of the present invention may further include:
  • a code means for activating a PDP context of a user equipment when an MSISDN of the same is the same, the PDP address in the PDP context is stored in the above data structure in a storage space reserved for the above MSISDN number for storing the PDP address Code device
  • a code device for providing an IP multicast service for the newly-established user group according to the multiple PDP addresses stored in the data structure is
  • the program storage medium of the present invention may further include:
  • the program storage medium of the present invention further includes:
  • the code device for deleting the data structure in the GGSN is started by a portal.
  • the code device for deleting a data structure in the GGSN is started by a user management system of a mobile communication system.
  • the code device for deleting the data structure in the GGSN is automatically started by the GGSN when GGS finds that the users in the user group have no activity after a predetermined period of time.
  • the method, network device and program storage medium of the present invention can be applied to a general packet radio service / improved data rate GSM service (GPRS / EDGE) system, or a wideband code division multiple access (WCDMA) system, or a code division multiple access In the 2000 (CDMA2000) system, Internet protocol multicast services are provided for mobile users in related mobile communication systems.
  • GPRS / EDGE general packet radio service / improved data rate GSM service
  • WCDMA wideband code division multiple access
  • CDMA2000 code division multiple access
  • Internet protocol multicast services are provided for mobile users in related mobile communication systems.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé d'implémentation d'un service de multidiffusion de protocole Internet (IP) dans un service de communication mobile qui comprend un noeud de support GPRS de passerelle (GGBN) et un système de nom de domaine (DNS). Ledit procédé est caractérisé en ce qu'il comporte les étapes consistant à recevoir un nom de point d'accès (APN) et une pluralité de nombres de réseaux numériques de service intégré à la station mobile (MSISDN) par ledit GGSN, créer la police d'APN et ajouter l'information de label dudit APN dans la liste de label d'APN dudit GGSN, ajouter un enregistrement renfermant les adresses IP de l'APN et du GGSN dans la base de données de DNS, créer une structure de données dans ledit GGSN de manière à stocker l'APN et la pluralité de nombres MSISDN et, enfin, réserver dans la structure de données, pour chacun des nombres MSISDN, un espace de stockage de l'adresse du protocole de données par paquet, de telle manière que les informations stockées dans ladite structure de données permettent d'identifier un groupe d'utilisateurs nouvellement créé. Cette invention a aussi trait à un type de service de données point-à-point présentant beaucoup d'attrait pour l'utilisateur de données mobiles.
PCT/CN2003/000724 2003-08-27 2003-08-27 Procede et appareil d'implementation d'un service de multidiffusion de protocole internet dans un systeme de communication mobile WO2005039104A1 (fr)

Priority Applications (3)

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AU2003261578A AU2003261578A1 (en) 2003-08-27 2003-08-27 A method and apparatus for implementing internet protocol (ip) multicasting service in the mobile communication system
CNB038269236A CN100375423C (zh) 2003-08-27 2003-08-27 在移动通信系统中实现互联网协议组播业务的方法及装置
PCT/CN2003/000724 WO2005039104A1 (fr) 2003-08-27 2003-08-27 Procede et appareil d'implementation d'un service de multidiffusion de protocole internet dans un systeme de communication mobile

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CN102238016A (zh) * 2010-04-30 2011-11-09 费伟华 网络数据广播及持久广播方法
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