WO2011035667A1 - 实现网间漫游的方法、系统及查询和网络附着方法及系统 - Google Patents

实现网间漫游的方法、系统及查询和网络附着方法及系统 Download PDF

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Publication number
WO2011035667A1
WO2011035667A1 PCT/CN2010/076204 CN2010076204W WO2011035667A1 WO 2011035667 A1 WO2011035667 A1 WO 2011035667A1 CN 2010076204 W CN2010076204 W CN 2010076204W WO 2011035667 A1 WO2011035667 A1 WO 2011035667A1
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WO
WIPO (PCT)
Prior art keywords
roaming
network
asn
rid
aid
Prior art date
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PCT/CN2010/076204
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English (en)
French (fr)
Inventor
金友兴
符涛
王卫斌
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/395,495 priority Critical patent/US8665849B2/en
Priority to EP10818361.7A priority patent/EP2469962A4/en
Priority to KR1020127010651A priority patent/KR101354869B1/ko
Priority to JP2012530113A priority patent/JP5427952B2/ja
Publication of WO2011035667A1 publication Critical patent/WO2011035667A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/12Mobility data transfer between location registers or mobility servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H04W36/0038Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of security context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/09Mapping addresses
    • H04L61/10Mapping addresses of different types
    • H04L61/103Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5084Providing for device mobility
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support

Definitions

  • the present invention relates to a network in which identity identification and location identification are separated, and in particular, to a method, system, and query and network attachment method and system for implementing inter-network roaming.
  • the IP address in the TCP/IP (Transmission Control Protocol/Internet Protocol) protocol widely used on the Internet has a dual function, which serves as the location identifier of the communication terminal host network interface of the network layer in the network topology, and also serves as the transport layer host. The identity of the network interface.
  • the TCP/IP protocol was not designed at the beginning of the host.
  • the semantic overload defects of such IP addresses are becoming increasingly apparent.
  • the IP address of the host changes, not only the route changes, but also the identity of the communication terminal host changes. This causes the routing load to become heavier and heavy, and the change of the host ID will cause the application and connection to be interrupted.
  • the purpose of separating the identity and location identifiers is to solve the problem of semantic overload and severe routing load and security of IP addresses, and to separate the dual functions of IP addresses to achieve dynamic redistribution of mobility, multiple townships, and IP addresses. Support for mitigating routing load and mutual visits between different network areas in the next generation Internet.
  • the technical problem to be solved by the present invention is to provide a method, system, and query and network attachment method and system for implementing inter-network roaming, which solves the problem that a network that cannot be provided for roaming users can be provided in a network in which the identity identifier and the location identifier are separated, and the user is implemented. a network separated by different identity and location identifiers When moving between, you can enjoy the same network service.
  • a method for implementing inter-network roaming is applied to a network in which an identity identifier and a location identifier are separated, in which an access identifier (AID) is used as a user identity of the terminal to route
  • the identifier (RID) is used as the location identifier of the terminal, and the method includes: after the roaming terminal is attached to the access service node (ASN) of the roaming network, sending the first data packet to the destination device, where the destination address of the first data packet is the destination device AID;
  • the ASN of the roaming network After receiving the first data packet, the ASN of the roaming network locally searches for the mapping information of the AID-RID in the ASN of the roaming network. If the RID of the destination device is not found, and the destination device does not belong to the roaming network, the ASN requests the roaming gateway. Query the RID of the destination device.
  • the roaming gateway queries the home network of the destination device for the RID of the destination device and returns it to the ASN of the roaming network;
  • the ASN of the roaming network sends the subsequent data packet of the roaming terminal to the destination device according to the RID of the destination device.
  • the step of the ASN of the roaming network requesting the roaming gateway to query the RID of the destination device includes: sending, by the ASN of the roaming network, the AID of the destination device to the roaming gateway, requesting to query the RID of the destination device;
  • the step of the roaming gateway querying the RID of the destination device from the home network of the destination device and returning to the ASN of the roaming network includes:
  • the roaming gateway After receiving the AID of the destination device, the roaming gateway resolves the AID, learns the home network of the destination device, and sends the AID of the destination device to the mapping forwarding plane of the home network of the destination device, requesting to query the RID of the destination device.
  • the mapping forwarding plane of the destination device's home network sends the mapping information of the AID-RID of the destination device to the roaming gateway after the corresponding RID is queried according to the AID of the destination device. After the roaming gateway saves, it is forwarded to the ASN of the roaming network.
  • the ASN to which the roaming terminal is attached to the roaming network includes:
  • the roaming terminal requests attachment to the ASN of the roaming network, and sends the AID of the roaming terminal to the ASN of the roaming network;
  • the ASN of the roaming network identifies that the roaming terminal does not belong to the local network according to the AID of the roaming terminal.
  • Network request access to the roaming gateway;
  • the roaming gateway searches for the home network of the roaming terminal according to the AID of the roaming terminal, and requests authentication from the authentication center of the roaming terminal belonging to the network;
  • the authentication center After the authentication center authenticates the roaming terminal, the authentication result is notified to the roaming gateway; and the roaming gateway notifies the ASN of the roaming network of the access result, and the ASN of the roaming network notifies the roaming terminal with the attached result.
  • the step of the ASN of the roaming network sending the subsequent data packet of the roaming terminal to the destination device according to the RID of the destination device includes:
  • the ASN in the roaming network repackages the data packet of the roaming terminal, and uses the RID of the destination device and the RID of the roaming terminal as the destination address and source address of the repackaged data packet respectively, and passes through the media plane channel with the destination ASN.
  • the re-encapsulated data packet is sent to the destination ASN; and the destination ASN decapsulates the ASN re-encapsulated data packet in the received roaming network, and restores the data packet of the roaming terminal to the destination device.
  • the step of the ASN of the roaming network sending the subsequent data packet of the roaming terminal to the destination device according to the RID of the destination device includes:
  • the ASN in the roaming network re-encapsulates the data packet of the roaming terminal, and uses the RID of the destination device and the RID of the roaming terminal as the destination address and the source address of the re-encapsulated data packet respectively, and sends the re-encapsulated data packet to the roaming.
  • the roaming gateway sends the repackaged data packet to the destination ASN according to the RID of the destination device;
  • the ASN decapsulates the ASN repackaged data packet in the received roaming network, and restores the data packet of the roaming terminal to the destination device.
  • the method also includes:
  • the ASN of the roaming network sends the first data packet to the roaming gateway when requesting the roaming gateway to query the RID of the destination device;
  • the roaming gateway queries the RID of the destination device from the home network of the destination device
  • the first data packet is also sent to the home network of the destination device; After the home network of the destination device queries the RID of the destination device, the first data packet is sent to the destination ASN according to the queried RID.
  • the ASN of the roaming network sends the AID of the destination device to the roaming gateway, and the step of requesting to query the RID of the destination device includes: sending, by the ASN of the roaming network, an AID-RID query message to the roaming gateway, where the AID-RID is The query message carries the AID of the destination device, and requests to query the RID of the destination device.
  • the roaming gateway sends the AID of the destination device to the mapping forwarding plane of the home network of the destination device, and the step of requesting to query the RID of the destination device includes: sending, by the roaming gateway, an AID-RID request to the mapping forwarding plane of the home network of the destination device
  • the message carries the AID of the destination device in the AID-RID request message, and requests to query the RID of the destination device;
  • the mapping forwarding plane of the destination device home network transmitting the mapping information of the AID-RID of the destination device to the roaming gateway includes: the mapping forwarding plane of the destination device home network returns an AID-RID request result message to the roaming gateway, and the destination The mapping information of the AID and the RID of the device is sent to the roaming gateway;
  • the roaming gateway forwards mapping information of the AID-RID of the destination device to the roaming network
  • the steps of the ASN include:
  • the roaming gateway sends the mapping information of the AID and the RID of the destination device to the ASN of the roaming network by sending an AID-RID query result message to the ASN of the roaming network.
  • the roaming terminal requests attachment to the ASN of the roaming network
  • the step of transmitting the AID of the roaming terminal to the ASN of the roaming network includes: the roaming terminal requests attachment to the ASN of the roaming network by sending an attach request message, where The AID of the roaming terminal is carried in the attach request message;
  • the step of requesting the access by the ASN of the roaming network to the roaming gateway includes: the ASN of the roaming network requesting access to the roaming gateway by sending an access request message;
  • the step of the roaming gateway requesting the authentication from the authentication center of the home network of the roaming terminal includes: the roaming gateway requests the authentication center of the home network of the roaming terminal to request the authentication by sending the authentication request message; the step of the authentication center notifying the roaming gateway of the authentication result includes: : The authentication center notifies the roaming gateway of the authentication result by sending an authentication result message;
  • the step of the roaming gateway notifying the ASN of the roaming network to the access result includes: the roaming gateway notifying the ASN of the roaming network by sending an access response message;
  • the step of the ASN of the roaming network notifying the roaming terminal of the attaching result includes: the ASN of the roaming network notifying the roaming terminal of the attaching result by sending an attach response message.
  • the configuration information of the AID range of the local network is stored on the ASN of the roaming network, and the ASN of the roaming network distinguishes the terminal and the roaming terminal of the local network according to the configuration information of the AID range of the local network;
  • the configuration information of each network AID range that is connected to the roaming gateway, and the roaming gateway distinguishes the terminals of different networks according to the configuration information of the network AID range.
  • the present invention also provides a system for implementing inter-network roaming, which is applied to a network in which an identity identifier and a location identifier are separated, in which AID is used as a user identity of the terminal, and RID is used as a location identifier of the terminal, the system Including: roaming terminal, destination device, ASN of roaming network and roaming gateway, where:
  • the roaming terminal is configured to: after attaching to the ASN of the roaming network, send a first data packet to the destination device, where the destination address of the first data packet is an AID of the destination device;
  • the ASN of the roaming network is set to: after receiving the first data packet, locally query the mapping information of the AID-RID, if the RID of the destination device is not found, and the destination device does not belong to the roaming network, then the roaming gateway is Requesting to query the RID of the destination device; and after receiving the RID of the destination device returned by the roaming gateway, sending a subsequent data packet of the roaming terminal to the destination device according to the RID;
  • the roaming gateway is configured to: query the RID of the destination device from the home network of the destination device, and return the ASN to the roaming network.
  • the ASN of the roaming network is configured to request the roaming gateway to query the RID of the destination device in the following manner: sending the AID of the destination device to the roaming gateway, requesting to query the RID of the destination device; the roaming gateway is set to:
  • the AID After receiving the AID of the destination device, the AID is parsed, the home network of the destination device is obtained, and the AID of the destination device is sent to the mapping forwarding plane of the home network of the destination device, and the RID of the destination device is requested to be queried;
  • the mapping forwarding plane that receives and stores the home network of the destination device queries the mapping information of the AID-RID of the destination device according to the AID of the destination device, and forwards the mapping information to the ASN of the roaming network.
  • the roaming terminal is further configured to: request an attach to the ASN of the roaming network, and connect the roaming terminal The AID sent to the ASN of the roaming network;
  • the ASN of the roaming network is further configured to: identify, according to the AID of the roaming terminal, that the roaming terminal does not belong to the local network, request the access from the roaming gateway; and receive the access result sent by the roaming gateway, and notify the roaming result of the attaching result Terminal
  • the roaming gateway is further configured to: look up the home network of the roaming terminal according to the AID of the roaming terminal, request authentication from the authentication center of the home network of the roaming terminal; and receive the authentication result sent by the authentication center, and notify the roaming place of the access result The ASN of the network.
  • the ASN of the roaming network is configured to send subsequent data packets of the roaming terminal to the destination device according to the RID of the destination device in the following manner:
  • the RID is used as the destination address and the source address of the repackaged data packet, and the re-encapsulated data packet is sent to the destination ASN through the media plane channel between the RSN and the destination ASN;
  • the ASN decapsulates the ASN repackaged data packet in the received roaming network, and restores the data packet of the roaming terminal to the destination device.
  • the ASN of the roaming network is configured to send subsequent data packets of the roaming terminal to the destination device according to the RID of the destination device in the following manner:
  • Repacking the data packet of the roaming terminal using the RID of the destination device and the RID of the roaming terminal as the destination address and the source address of the repackaged data packet, respectively, and sending the repackaged data packet to the roaming gateway;
  • the roaming gateway sends the re-encapsulated data packet to the destination ASN according to the RID of the destination device.
  • the destination ASN decapsulates the ASN re-encapsulated data packet in the received roaming network, and restores the data packet of the roaming terminal, and sends the data packet. Give the destination device.
  • the ASN of the roaming network is further configured to: when requesting the roaming gateway to query the RID of the destination device, send the first data packet to the roaming gateway;
  • the roaming gateway is further configured to: when the RID of the destination device is queried from the home network of the destination device, send the first data packet to the home network of the destination device;
  • the home network of the destination device is further configured to: after querying the RID of the destination device, send the first data packet to the destination ASN according to the queried RID.
  • the ASN of the roaming network is configured to send an AID-RID query message to the roaming gateway, and the AID-RID query message carries the AID of the destination device, and requests to query the RID of the destination device;
  • the roaming gateway is set to:
  • the AID-RID request message carries the AID of the destination device, and requests to query the RID of the destination device.
  • mapping information of the AID and the RID of the destination device is sent to the ASN of the roaming network by sending an AID-RID query result message to the ASN of the roaming network.
  • the roaming terminal is configured to request attachment to the ASN of the roaming network in the following manner, and send the AID of the roaming terminal to the ASN of the roaming network: requesting attachment to the ASN of the roaming network by sending an attach request message, where The attach request message carries the AID of the roaming terminal;
  • the ASN of the roaming network is configured to: request an access to the roaming gateway by sending an access request message; and notify the roaming terminal of the result of the attach by sending an attach response message
  • the roaming gateway is configured to: request an authentication from the authentication center of the home network of the roaming terminal by sending an authentication request message; receive an authentication result message sent by the authentication center; and notify the roaming network of the access result by sending an access response message ASN.
  • the configuration information of the AID range of the local network is stored on the ASN of the roaming network, and the ASN of the roaming network is further configured to distinguish the terminal and the roaming terminal of the local network according to the configuration information of the AID range of the local network;
  • the configuration information of each network AID range connected to the roaming gateway is saved on the roaming gateway, and the roaming gateway is further configured to distinguish the terminals of different networks according to the configuration information of the network AID range.
  • the present invention also provides a method for implementing inter-network roaming.
  • the method is applied to a network in which identity identification and location identification are separated.
  • the AID is used as the user identity of the terminal
  • the RID is used as the location identifier of the terminal.
  • the method includes :
  • the first data packet is sent to the destination device, the first The destination address of the data packet is the AID of the destination device;
  • the ASN of the roaming network After receiving the first data packet, the ASN of the roaming network locally searches for the mapping information of the AID-RID in the ASN of the roaming network. If the RID of the destination device is not found, and the destination device belongs to the roaming network, the local request is requested. Mapping the forwarding plane to query the RID of the destination device;
  • the local mapping forwarding plane queries the RID of the destination device and returns it to the ASN of the roaming network;
  • the ASN of the roaming network sends the subsequent data packet of the roaming terminal to the destination device according to the RID of the destination device.
  • the method also includes:
  • the ASN of the roaming network requests to query the destination device from the local mapping forwarding plane.
  • the local mapping forwarding plane queries the RID of the destination device
  • the local data packet is sent to the destination ASN according to the RID of the query.
  • the present invention also provides a system for implementing inter-network roaming, which is applied to a network in which an identity identifier and a location identifier are separated, in which AID is used as a user identity of the terminal, and RID is used as a location identifier of the terminal, the system Including: a roaming terminal, a destination device, an ASN of a roaming network, and a local mapping forwarding plane, where:
  • the roaming terminal is configured to: after attaching to the ASN of the roaming network, send a first data packet to the destination device, where the destination address of the first data packet is an AID of the destination device;
  • the ASN of the roaming network is set to: after receiving the first data packet, in the roaming network
  • the ASN locally searches for the mapping information of the AID-RID. If the RID of the destination device is not found, and the destination device belongs to the roaming network, the local mapping forwarding plane is requested to query the RID of the destination device; and the local mapping forwarding plane is received. After the RID of the destination device, according to the RID, the subsequent data packet of the roaming terminal is sent to the destination device;
  • the local mapping forwarding plane is set to: Query the RID of the destination device and return it to the ASN of the roaming network.
  • the ASN of the roaming network is further configured to send the first data packet to the mapping forwarding plane when requesting the local mapping forwarding plane to query the RID of the destination device;
  • the local mapping forwarding plane is further configured to: after querying the RID of the destination device, send the first data packet to the destination ASN according to the queried RID.
  • the present invention further provides a query method, which is characterized in that the method is applied to a network in which an identity identifier and a location identifier are separated, in which AID is used as a user identity of the terminal, and RID is used as a location identifier of the terminal, the method Includes:
  • the ASN sends the AID of the device to the roaming gateway, and requests to query the RID of the device.
  • the roaming gateway After receiving the AID of the device, the roaming gateway parses the AID, learns the home network of the device, and sends the AID of the device to the mapping forwarding plane of the home network of the device, requesting to query the RID of the device;
  • the mapping forwarding plane of the device home network sends the mapping information of the device's AID-RID to the roaming gateway after the device searches for the corresponding RID.
  • the roaming gateway saves the information and forwards it to the ASN.
  • the ASN sends the AID of the device to the roaming gateway.
  • the step of requesting to query the RID of the device includes: sending, by the ASN, an AID-RID query message to the roaming gateway, and carrying the AID of the device in the AID-RID query message, requesting the query. RID of the device;
  • the roaming gateway sends the AID of the device to the mapping forwarding plane of the home network of the device, and the step of requesting to query the RID of the device includes: sending, by the roaming gateway, an AID-RID request message to the mapping forwarding plane of the home network of the device, where The AID-RID request message carries the AID of the device, and requests to query the RID of the device;
  • the step of the mapping forwarding plane of the device home network transmitting the mapping information of the AID-RID of the device to the roaming gateway includes: the mapping forwarding plane of the home network of the device returns the AID-RID request result message to the roaming gateway, and the AID of the device is The mapping information of the RID is sent to the roaming gateway; the step of the roaming gateway forwarding the mapping information of the AID-RID of the device to the ASN includes: the mapping information of the AID and the RID of the device by the roaming gateway sending the AID-RID query result message to the ASN Send to ASN.
  • the invention also provides an inquiry system, which is applied to a network in which identity identification and location identification are separated.
  • the AID is used as the user identity of the terminal
  • the RID is used as the location identifier of the terminal, including: ASN, roaming gateway And a mapping forwarding plane of the device home network;
  • the ASN is configured to: send the AID of the device to the roaming gateway, and request to query the RID of the device;
  • the roaming gateway is configured to: after receiving the AID of the device, parse the AID, learn the home network of the device, and send the AID of the device to the mapping forwarding plane of the home network of the device, requesting to query the RID of the device; After the mapping information of the AID-RID returned by the mapping forwarding plane of the device home network is saved and forwarded to the ASN;
  • the mapping forwarding plane of the device home network is set to: after the corresponding RID is queried according to the AID of the device, the mapping information of the AID-RID of the device is sent to the roaming gateway.
  • the ASN is configured to: send an AID-RID query message to the roaming gateway, and carry the AID of the device in the AID-RID query message, requesting to query the RID of the device;
  • the roaming gateway is configured to: send an AID-RID request message to the mapping forwarding plane of the home network of the device, carry the AID of the device in the AID-RID request message, request to query the RID of the device, and send the AID by sending the ASN to the ASN.
  • the RID query result message sends the mapping information of the device's AID and RID to the ASN.
  • the mapping forwarding plane of the device home network is set to: send the mapping information of the AID and the RID of the device to the roaming gateway by returning the AID-RID request result message to the roaming gateway.
  • the present invention also provides a network attachment method, which is applied to a network in which an identity identifier and a location identifier are separated.
  • the AID is used as the user identity of the terminal
  • the RID is used as the location identifier of the terminal.
  • the method includes:
  • the roaming terminal requests attachment to the ASN of the roaming network, and sends the AID of the roaming terminal to the ASN of the roaming network;
  • the ASN of the roaming network identifies that the roaming terminal does not belong to the local network according to the AID of the roaming terminal, and requests access to the roaming gateway;
  • the roaming gateway searches for the home network of the roaming terminal according to the AID of the roaming terminal, and requests authentication from the authentication center of the roaming terminal belonging to the network;
  • the authentication center After the authentication center authenticates the roaming terminal, the authentication result is notified to the roaming gateway; and the roaming gateway notifies the ASN of the roaming network of the access result, and the ASN of the roaming network notifies the roaming terminal with the attached result.
  • the roaming terminal requests attachment to the ASN of the roaming network
  • the step of transmitting the AID of the roaming terminal to the ASN of the roaming network includes: the roaming terminal sends an attach request message to The ASN of the roaming network requests attachment, and the AID of the roaming terminal is carried in the attach request message;
  • the step of requesting access by the ASN of the roaming network to the roaming gateway includes: sending an access request by the ASN of the roaming network Message, requesting access to the roaming gateway;
  • the step of the roaming gateway requesting the authentication from the authentication center of the home network of the roaming terminal includes: the roaming gateway requests the authentication center of the home network of the roaming terminal to request the authentication by sending the authentication request message; the step of the authentication center notifying the roaming gateway of the authentication result includes: : The authentication center notifies the roaming gateway of the authentication result by sending an authentication result message;
  • the step of the roaming gateway notifying the ASN of the roaming network to the access result includes: the roaming gateway notifying the ASN of the roaming network by sending an access response message;
  • the step of the ASN of the roaming network notifying the roaming terminal of the attaching result comprises: the ASN of the roaming network notifying the roaming terminal of the attaching result by sending an attach response message.
  • the present invention also provides a network attachment system, which is applied to a network in which identity identification and location identification are separated.
  • the AID is used as the user identity of the terminal
  • the RID is used as the location identifier of the terminal.
  • the system includes: roaming The terminal, the ASN of the roaming network, the roaming gateway, and the authentication center of the home network of the roaming terminal;
  • the roaming terminal is configured to: request an attach to the ASN of the roaming network, and send the AID of the roaming terminal to the ASN of the roaming network;
  • the ASN of the roaming network is set to: according to the AID of the roaming terminal, the roaming terminal does not belong to the local network, and requests the access to the roaming gateway; and after receiving the access result returned by the roaming gateway, notifying the roaming terminal of the attaching result;
  • the roaming gateway is configured to: search for a home network of the roaming terminal according to the AID of the roaming terminal, request authentication from the authentication center of the home network of the roaming terminal; and notify the roaming area after receiving the authentication result returned by the authentication center of the home network of the roaming terminal ASN access result of the network;
  • the authentication center of the home network of the roaming terminal is configured to: after authenticating the roaming terminal, notify the roaming gateway of the authentication result.
  • the roaming terminal is configured to: attach an ASN request to the roaming network by sending an attach request message, and carry the AID of the roaming terminal in the attach request message;
  • the ASN of the roaming network is set to: requesting from the roaming gateway by sending an access request message Access; and notify the roaming terminal of the result of the attachment by sending an attach response message
  • the roaming gateway is configured to: request an authentication from the authentication center of the home network of the roaming terminal by sending an authentication request message; and notify the ASN of the roaming network by sending an access response message;
  • the authentication center is configured to: notify the roaming gateway of the authentication result by sending an authentication result message.
  • the network is simple, and the roaming gateway is interconnected with each network. In the view of a certain network, the roaming gateway is part of the network, and the roaming service is accessed from the roaming gateway to the home network.
  • a network does not need to establish a complex network structure with other roaming partners, simplifying the network structure.
  • the roaming gateway has network isolation function, which can block the network structure of other roaming partners from the network.
  • the network only needs to perform communication-related data configuration with the roaming gateway, and does not need to understand the network structure of the roaming partner.
  • the roaming gateway has the function of inter-network settlement and statistics. It can count the traffic between each roaming partner, facilitate billing and settlement, formulate business development plans, and optimize operations.
  • Figure 1 is an architectural diagram of a network separated from an identity identifier and a location identifier
  • FIG. 2 is an architectural diagram of another network in which identity and location are separated
  • 3 is an architectural diagram of a network in which a third identity is separated from a location identity
  • FIG. 5 is a flowchart of a method for implementing inter-network roaming according to the present invention.
  • Figure 1 shows the architecture of a network based on an IP network router to implement identity and location identification separation.
  • the logical functions of each network element are as follows:
  • An access service node is responsible for providing access services for various mobile terminals, assigning a route identifier (RID) to the accessed terminal, and encapsulating the data packet of the terminal and transmitting it to the core network for transmission, and is responsible for Query the location of the communication peer. If the ASN does not store the routing location information of the communication peer locally, it searches through the mapping forwarding plane.
  • RID route identifier
  • the mapping forwarding plane is composed of multiple identity location registers/packet forwarding functions (ILR/PTF), which is responsible for maintaining the mapping information of the identity and routing identifiers of the terminals in the network, and providing query services to the ASN and other ILRs.
  • ILR/PTF identity location registers/packet forwarding functions
  • the certification center is responsible for recording information such as terminal categories and service levels. When the terminal accesses, it authenticates and authorizes the terminal.
  • the certificate authority supports two-way authentication between the network and the terminal.
  • the IP backbone network is an interconnection network between ASNs.
  • the main function is to select and forward data packets according to the routing identifiers in the data packets, and forward the data sent by the ASN to the correct destination.
  • the IP network is controlled by the core switching router. (CSR) composition.
  • CSR core switching router
  • the Interworking Gateway (ISN) is an interworking node between the identity and location identification separation network and other networks. Two different types of networks must communicate through the ISN.
  • the radio access network is responsible for providing and maintaining the Layer 2 link between the terminal and the ASN. In the cellular mobile network, it is responsible for radio resource allocation and management.
  • the wireless network may be WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), CDMA2000 (Code Division Multiple Access 2000), LTE (Long Term Evolution) and other wireless networks.
  • FIG. 2 shows another architecture of a network that implements separation of identity and location identifiers.
  • the architecture divides the network into an access network and a backbone network.
  • the access network is located at the edge of the backbone network and is responsible for accessing all terminals.
  • the backbone network is responsible for routing and forwarding data packets between terminals accessed through the access network. There is no overlap between the access network and the backbone network in the topology relationship.
  • the RID is the location identifier assigned to the terminal. , used in the backbone network.
  • the terminal accessing the network may be one or more of a mobile terminal, a fixed terminal, and a nomadic terminal, such as a mobile phone, a fixed telephone, a computer, an application server, and the like.
  • the access network is used to provide the terminal with a layer 2 (physical layer and link layer) access means, and maintains a physical access link between the terminal and the ASN.
  • Possible Layer 2 access methods include: cellular mobile network technology (GSM/CDMA/TD-SCDMA/WCDMA/WiMAX/LTE), DSL, broadband fiber access or WiFi access, and more.
  • the backbone network of the architecture is divided into two planes: a generalized forwarding plane and a mapping forwarding plane, and an access service node (ASN: Access Service Node) and a certification center.
  • ASN Access Service Node
  • the ASN is a demarcation node of a generalized forwarding plane, a mapping forwarding plane, and an access network, and has an interface with an access network, a generalized forwarding plane, and a mapping forwarding plane. It is used to provide access services for the terminal, maintain the connection between the terminal and the network, assign the RID to the terminal, register and register the RID of the terminal to the mapping forwarding plane, maintain the mapping information of the AID-RID, and implement the routing of the data. Forward.
  • the generalized forwarding plane is mainly used for routing and forwarding data packets with the RID as the destination address according to the RID in the data packet, and the data routing and forwarding behavior in the generalized forwarding plane is consistent with the traditional IP network.
  • the main network elements of the generalized forwarding plane include a common router (CR: Common Router) and an interconnected service node (ISN: Interconnect Service Node).
  • the mapping forwarding plane is mainly used to store the identity location mapping information of the terminal (ie, the mapping information of the AID-RID), process the registration and query of the terminal location, and route and forward the data packet with the AID as the destination address.
  • the primary network element of the mapping forwarding plane includes the Identity Location Register/Packet Transfer Function (ILR/PTF: Identity Location Register/Packet Transfer Function).
  • the authentication center is used to record the attribute information of the network terminal user of the architecture, such as the user category, the authentication information, and the user service level, and completes the access authentication and authorization for the terminal, and may also have a charging function.
  • the certificate authority supports two-way authentication between the terminal and the network, and generates user security information for authentication, integrity protection, and encryption.
  • the ASN is independent of the backbone network in the division of the architecture, and is located in the backbone network and connected.
  • the demarcation node of the network has an interface with the access network and the backbone network, as shown in FIG. The function actually completed is the same as that of FIG. 2.
  • the present invention establishes a roaming gateway between the networks, and each network establishes a network interconnection relationship with the roaming gateway, including the communication between the control plane channel (signaling channel) and the media plane channel (the media plane channel refers to the ASN).
  • the roaming gateway in the view of each network, is an integral part of its network and can communicate with the authentication center, pass authentication information, and forward data.
  • the roaming gateway needs to communicate with the mapping forwarding plane of each network because the mapping forwarding plane exists.
  • the ASN of the roaming user visited network can query the AID of the roaming user from the home network through the roaming gateway. -RID mapping information.
  • a network can be interconnected with one or more roaming gateways, that is, a roaming-capable network has at least one ILR/PTF in communication with the roaming gateway, and the roaming gateway roams the ASN to the user through the ILR/PTF with which it communicates Provides the query function of the mapping information of the AID-RID and the first packet forwarding function.
  • the network status of the roaming gateway and ASN is the same, but there are some differences in functionality.
  • the ASN of the network must have the AID identification capability to distinguish the AIDs of the terminals and servers of the home network and the roaming network.
  • the roaming gateway must also have the AID identification capability, which can separate the terminals of different networks and the AID of the server.
  • the data packets between the ASNs are standard IP packets, which can be routed on the IP backbone network.
  • FIG. 5 is a schematic diagram of a method for implementing inter-network roaming according to the present invention.
  • a roaming user accesses an application server (APP Server) at a home location through an ASN-A access in a roaming network A, where the application server is located at a home of a roaming user.
  • the certification center and ILR devices are deployed at the home.
  • the process of accessing the application server at the home location including:
  • the user's terminal initiates an attach request, and sends an attach request message (Attach Req) to the ASN (ASN-A) of the roaming place, and carries the AID of the user in the attach request message;
  • ASN-A resolves the AID of the user, and finds that the user is a roaming user, and sends an Access Req message to the roaming gateway to request access;
  • the configuration information of the AID range of the local network can be saved on the ASN to distinguish users and roaming users of the network.
  • the roaming gateway parses the AID of the user, learns and searches for the home network of the user (network B), and sends an authentication request (Auth Req) message to the authentication center of the network B (pre-configured);
  • Auth Req authentication request
  • the configuration information of the network AID range, the roaming gateway distinguishes the terminals of different networks according to the configuration information, and searches for the corresponding network.
  • the authentication center that receives the Auth Req authenticates the user, and returns an authentication result (Auth Res) message to the roaming gateway, and notifies the roaming gateway of the authentication result;
  • the roaming gateway After receiving the Auth Res message, the roaming gateway returns an access response message (Access Res) to the ASN-A, and notifies the ASN-A of the access result;
  • the ASN-A After receiving the access response message, the ASN-A returns an attach response message (Attach Res) to the terminal, and notifies the roaming terminal of the result of the attaching;
  • the source terminal In the case of successful access, the source terminal initiates a service request, and sends a first data packet (Service First Data). Assume that the source terminal accesses the application server of the home location, and the AID is AID-B, and the source address of the first data packet is The AID of the source terminal, the destination address is AID-B;
  • the ASN-A After receiving the data packet sent by the source terminal, the ASN-A queries the RID corresponding to the AID-B locally. If the corresponding RID is not found, the AID-B is parsed to determine whether the destination device belongs to the roaming network. If yes, the AID-RID query message (AID-RID Query) is sent to the roaming gateway, the AID-B is carried in the AID-RID Query, and the first data packet is sent to the roaming gateway;
  • ASN-A queries from the local mapping forwarding plane.
  • the RID corresponding to the AID-B, and the first data packet is sent to the local mapping forwarding plane.
  • the local mapping forwarding plane queries the RID corresponding to the AID-B
  • the first data packet is sent to the destination ASN according to the RID
  • the mapping information of the AID-RID of the destination device is sent to the ASN-A
  • the ASN-A sends the subsequent data packet of the roaming terminal to the destination ASN according to the mapping information of the AID-RID of the destination device.
  • the roaming gateway After receiving the AID-RID Query, the roaming gateway parses the AID of the destination device, learns the network to which the destination device belongs (network B), and sends an AID-RID Req (request) message to the mapping forwarding plane of network B, in the AID-RID. Req carries AID-B, and forwards the received first data packet to the mapping forwarding plane of network B;
  • the mapping forwarding plane of the network B returns an AID-RID request result (AID-RID Res) message to the roaming gateway according to the AID-B query corresponding RID, and sends the mapping information of the AID-B and the RID to the roaming gateway, the roaming gateway Saving mapping information of AID-B and RID;
  • the roaming gateway returns an AID-RID Query Res message to the ASN-A, and sends the mapping information of the AID-B and the RID to the ASN-A.
  • the ASN-A locally stores the mapping information of the AID-B and the RID.
  • the mapping forwarding plane sends the first data packet of the source terminal to the ASN-B according to the RID corresponding to the AID-B, and the ASN-B forwards the first data packet to the application server accessed by the source terminal.
  • the ASN-A has The RID corresponding to the AID-B is obtained, and the subsequent data packet transmission process has two possible situations according to the networking of the network, as described in steps 513 and 514, respectively.
  • the ASN-A in the roaming network can directly communicate with the media plane channel of the ASN-B in the home network (the ASN-A does not directly communicate with the authentication center and the mapping plane of the network B), the ASN-A pair roaming terminal
  • the media plane data packet is repackaged, and the RID of the destination device and the RID of the roaming terminal are respectively used as the destination address and source address of the repackaged data packet, and are sent to ASN-B, ASN-B to receive the ASN-A.
  • the repackaged data packet is decapsulated, and the data packet is restored to a media plane data packet of the roaming terminal, and sent to the application server;
  • the media plane data does not need to go through the roaming gateway.
  • the ASN-A in the roaming network cannot directly communicate with the media plane of the ASN-B in the home network (the ASN-A does not directly communicate with the authentication center and the mapping plane of the network B), the ASN-A media to the terminal
  • the packet is repackaged, and the RID of the destination device and the RID of the roaming terminal are respectively used as the destination address and source address of the repackaged data packet, and sent to the roaming gateway, and the roaming gateway sends the repackaged data packet to the ASN- B.
  • the ASN-B decapsulates the received ASN-A repackaged data packet, restores the media plane data packet of the roaming terminal, and sends the media plane data packet of the roaming terminal to the application server.
  • the roaming gateway needs to find the mapping information of the destination AID and RID of the data packet so that the data packet can be
  • the ASN is sent to the correct ASN, and the ASN is sent to the corresponding destination terminal or application server.
  • the roaming gateway does not modify the encapsulation format and content of the data packets sent by the ASN. It only analyzes and counts the data. After the AID-RID mapping relationship is searched for each received packet, it is sent to the correct ASN.
  • the present invention also provides a system for implementing inter-network roaming, which is applied to a network in which identity identification and location identification are separated.
  • the system includes: a roaming terminal, a destination device, an ASN of a roaming network, and a roaming gateway, where:
  • a roaming terminal configured to send a first data packet to the destination device after the ASN attached to the roaming network, where the destination address of the first data packet is an AID of the destination device;
  • the ASN of the roaming network is used to query the mapping information of the AID-RID locally after receiving the first data packet. If the RID of the destination device is not found, and the destination device does not belong to the roaming network, request the query from the roaming gateway. The RID of the destination device, and after receiving the RID of the destination device returned by the roaming gateway, sending a subsequent data packet of the roaming terminal to the destination device according to the RID;
  • the ASN of the roaming network requests the roaming gateway to query the RID of the destination device, and the process of the roaming gateway querying the RID of the destination device includes:
  • the ASN of the roaming network sends the AID of the destination device to the roaming gateway, requesting to query the RID of the destination device;
  • the roaming gateway After receiving the AID of the destination device, the roaming gateway resolves the AID, learns the home network of the destination device, and sends the AID of the destination device to the mapping forwarding plane of the home network of the destination device, requesting to query the RID of the destination device.
  • the mapping forwarding plane of the destination device's home network sends the mapping information of the AID-RID of the destination device to the roaming gateway after the corresponding RID is queried according to the AID of the destination device. After the roaming gateway saves, it is forwarded to the ASN of the roaming network.
  • the roaming gateway is configured to query the RID of the destination device from the home network of the destination device, and return the ASN to the roaming network.
  • the process of attaching a roaming terminal to an ASN of a roaming network includes:
  • the roaming terminal requests attachment to the ASN of the roaming network, and sends the AID of the roaming terminal to the ASN of the roaming network;
  • the ASN of the roaming network identifies that the roaming terminal does not belong to the local network according to the AID of the roaming terminal, and requests access to the roaming gateway;
  • the roaming gateway searches for the home network of the roaming terminal according to the AID of the roaming terminal, and requests authentication from the authentication center of the roaming terminal belonging to the network;
  • the authentication center After authenticating the roaming terminal, the authentication center notifies the roaming gateway of the authentication result;
  • the roaming gateway notifies the ASN of the roaming network of the access result, and the ASN of the roaming network notifies the roaming terminal of the attached result.
  • the process of the ASN of the roaming network sending the subsequent data packet of the roaming terminal to the destination device according to the RID of the destination device includes:
  • the ASN in the roaming network repackages the data packets of the roaming terminal, and uses the destination device.
  • the RID and the RID of the roaming terminal are respectively used as the destination address and the source address of the repackaged data packet, and the repackaged data packet is sent to the destination ASN through the media plane channel between the RID and the destination ASN;
  • the ASN decapsulates the ASN re-encapsulated data packet in the received roaming network, and restores the data packet of the roaming terminal to the destination device;
  • the ASN in the roaming network repackages the data packets of the roaming terminal, and uses the destination device.
  • the RID and the RID of the roaming terminal are respectively used as the destination address and the source address of the repackaged data packet, and the repackaged data packet is sent to the roaming gateway;
  • the roaming gateway sends the re-encapsulated data packet to the destination ASN according to the RID of the destination device.
  • the destination ASN decapsulates the ASN re-encapsulated data packet in the received roaming network, and restores the data packet of the roaming terminal, and sends the data packet. Give the destination device.
  • the ASN of the roaming network is further configured to send the first data packet to the roaming gateway when requesting the roaming gateway to query the RID of the destination device;
  • the roaming gateway is further configured to: when the RID of the destination device is queried from the home network of the destination device, send the first data packet to the home network of the destination device;
  • the home network of the destination device is further configured to send the first data packet to the destination ASN according to the queried RID after the RID of the destination device is queried.
  • the ASN of the roaming network sends an AID-RID query message to the roaming gateway, and the AID-RID query message carries the AID of the destination device, and requests to query the RID of the destination device.
  • the roaming gateway sends an AID-RID request message to the mapping forwarding plane of the destination device home network, and the AID-RID request message carries the AID of the destination device, and requests to query the RID of the destination device.
  • the mapping forwarding plane of the destination device home network sends the AID-RID request result message to the roaming gateway, and sends the mapping information of the AID and the RID of the destination device to the roaming gateway;
  • the roaming gateway sends the mapping information of the AID and the RID of the destination device to the ASN of the roaming network by sending an AID-RID query result message to the ASN of the roaming network.
  • the roaming terminal requests the attachment to the ASN of the roaming network by sending an attach request message, and carries the AID of the roaming terminal in the attach request message;
  • the ASN of the roaming network requests access to the roaming gateway by sending an access request message;
  • the roaming gateway requests the authentication center of the home network of the roaming terminal to request authentication by sending an authentication request message;
  • the authentication center notifies the roaming gateway of the authentication result by sending an authentication result message
  • the roaming gateway notifies the ASN of the roaming network by sending an access response message; the ASN of the roaming network notifies the roaming terminal of the result of the attach by sending an attach response message.
  • the configuration information of the AID range of the local network is stored on the ASN of the roaming network, and the ASN of the roaming network distinguishes the terminal and the roaming terminal of the network according to the configuration information of the AID range of the local network;
  • the configuration information of each network AID range connected to the roaming gateway is stored on the roaming gateway, and the roaming gateway distinguishes the terminals of different networks according to the configuration information of each network AID range.
  • the network is simple, and the roaming gateway is interconnected with each network. In the view of a certain network, the roaming gateway is part of the network, and the roaming service is accessed from the roaming gateway to the home network.
  • a network does not need to establish a complex network structure with other roaming partners, simplifying the network structure.
  • the roaming gateway has network isolation function, which can block the network structure of other roaming partners from the network.
  • the network only needs to perform communication-related data configuration with the roaming gateway, and does not need to understand the network structure of the roaming partner.
  • the roaming gateway has the function of inter-network settlement and statistics. It can count the traffic between each roaming partner, facilitate billing and settlement, formulate business development plans, and optimize operations.

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Abstract

本发明公开了实现网间漫游的方法、系统及查询和网络附着方法及系统应用于身份标识与位置标识分离的网络中,在该网络中以AID作为终端的用户身份标识,以RID作为终端的位置标识,所述实现网间漫游的方法包括:漫游终端附着到漫游地网络的ASN后, 向目的设备发送首数据包, 该首数据包的目的地址为目的设备的AID;所述漫游地网络的ASN接收到首数据包后,在漫游地网络的ASN本地查询AID-RID的映射信息,若未查找到目的设备的RID,并且目的设备不属于漫游地网络,则向漫游网关请求查询目的设备的RID;漫游网关从目的设备的归属网络查询目的设备的RID,并返回给漫游地网络的ASN; 漫游地网络的ASN根据目的设备的RID, 向目的设备发送漫游终端的后续数据包。

Description

实现网间漫游的方法、 系统及查询和网络附着方法及系统
技术领域
本发明涉及身份标识与位置标识分离的网络, 尤其涉及一种实现网间漫 游的方法、 系统及查询和网络附着方法及系统。
背景技术
目前, 因特网广泛使用的 TCP/IP (传输控制协议 /因特网互联协议 )协议 中 IP地址具有双重功能, 既作为网络层的通信终端主机网络接口在网络拓朴 中的位置标识, 又作为传输层主机网络接口的身份标识。 TCP/IP协议设计之 初并未考虑主机移动的情况。 但是, 当主机移动越来越普遍时, 这种 IP地址 的语义过载缺陷日益明显。 当主机的 IP地址发生变化时, 不仅路由要发生变 化, 通信终端主机的身份标识也发生变化, 这样会导致路由负载越来越重, 而且主机标识的变化会导致应用和连接的中断。
提出身份标识和位置标识分离的目的是解决 IP地址的语义过载和路由负 载严重以及安全性等问题, 将 IP地址的双重功能进行分离, 实现对移动性、 多家乡性、 IP地址动态重分配、 减轻路由负载及下一代互联网中不同网络区 域之间的互访等问题的支持。
当用户与在网络 B中签订服务协议后, 如果用户漫游到网络 B未覆盖的 区域(漫游区域) , 就无法享受网络 B的服务了, 而如果漫游区域是网络 A 的覆盖区域, 并且网络 A与网络 B已签署漫游协议, 并且用户被允许漫游, 那么在网络 A所覆盖的区域, 用户也可以享受相同的服务, 然而, 目前在身 份标识和位置标识分离的网络中, 尚没有为漫游用户提供业务服务的方法。 发明内容
本发明要解决的技术问题是提供一种实现网间漫游的方法、 系统及查询 和网络附着方法及系统, 解决身份标识与位置标识分离的网络中无法为漫游 用户提供服务的问题, 实现当用户在不同的身份标识与位置标识分离的网络 之间移动时, 可以享受到同等的网络服务。
为解决上述技术问题, 本发明的一种实现网间漫游的方法, 应用于身份 标识与位置标识分离的网络中, 在该网络中以接入标识 (AID )作为终端的 用户身份标识, 以路由标识(RID )作为终端的位置标识, 该方法包括: 漫游终端附着到漫游地网络的接入服务节点 (ASN )后, 向目的设备发 送首数据包, 该首数据包的目的地址为目的设备的 AID;
漫游地网络的 ASN接收到首数据包后, 在漫游地网络的 ASN本地查询 AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的设备不属于漫 游地网络, 则向漫游网关请求查询目的设备的 RID;
漫游网关从目的设备的归属网络查询目的设备的 RID , 并返回给漫游地 网络的 ASN;
漫游地网络的 ASN根据目的设备的 RID,向目的设备发送漫游终端的后 续数据包。
所述漫游地网络的 ASN向漫游网关请求查询目的设备的 RID的步骤包 括: 所述漫游地网络的 ASN将目的设备的 AID发送给漫游网关, 请求查询 目的设备的 RID;
所述漫游网关从目的设备的归属网络查询目的设备的 RID, 并返回给漫 游地网络的 ASN的步骤包括:
漫游网关接收到目的设备的 AID后, 解析该 AID, 获知目的设备的归属 网络, 将目的设备的 AID发送给该目的设备归属网络的映射转发平面, 请求 查询目的设备的 RID;
目的设备归属网络的映射转发平面根据目的设备的 AID 查询到对应的 RID后, 将目的设备的 AID-RID的映射信息发送给漫游网关, 漫游网关保存 后, 转发给漫游地网络的 ASN。
所述漫游终端附着到漫游地网络的 ASN包括:
漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送给该 漫游地网络的 ASN;
漫游地网络的 ASN才艮据漫游终端的 AID识别出漫游终端不属于本地网 络, 向漫游网关请求接入;
漫游网关才艮据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归 属网络的认证中心请求认证;
认证中心对漫游终端进行认证后, 将认证结果通知漫游网关; 以及 漫游网关将接入结果通知漫游地网络的 ASN, 漫游地网络的 ASN将附 着结果通知漫游终端。
所述漫游地网络的 ASN根据目的设备的 RID,向目的设备发送漫游终端 的后续数据包的步骤包括:
漫游网络中的 ASN将漫游终端的数据包进行重封装, 釆用目的设备的 RID和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 通过 与目的 ASN之间的媒体面通道将该重封装的数据包发送给目的 ASN; 以及 目的 ASN对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
其中, 所述漫游地网络的 ASN根据目的设备的 RID, 向目的设备发送漫 游终端的后续数据包的步骤包括:
漫游网络中的 ASN将漫游终端的数据包进行重封装, 釆用目的设备的 RID和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 将该 重封装的数据包发送给漫游网关;
漫游网关根据目的设备的 RID, 将该重封装的数据包发送给目的 ASN; 以及
目的 ASN对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
该方法还包括:
所述漫游地网络的 ASN在向漫游网关请求查询目的设备的 RID时,还将 所述首数据包发送给漫游网关;
漫游网关从目的设备的归属网络查询目的设备的 RID时, 还将所述首数 据包发送给目的设备的归属网络; 以及 目的设备的归属网络在查询到目的设备的 RID后, 根据该查询到的 RID 将所述首数据包发送给目的 ASN。
所述漫游地网络的 ASN将目的设备的 AID发送给漫游网关, 请求查询 目的设备的 RID的步骤包括: 所述漫游地网络的 ASN通过向漫游网关发送 AID-RID查询消息, 在该 AID-RID查询消息中携带目的设备的 AID , 请求查 询目的设备的 RID;
所述漫游网关将目的设备的 AID发送给该目的设备归属网络的映射转发 平面, 请求查询目的设备的 RID的步骤包括: 所述漫游网关通过向目的设备 归属网络的映射转发平面发送 AID-RID请求消息,在该 AID-RID请求消息中 携带目的设备的 AID, 请求查询目的设备的 RID;
所述目的设备归属网络的映射转发平面将目的设备的 AID-RID的映射信 息发送给漫游网关的步骤包括: 目的设备归属网络的映射转发平面通过向漫 游网关返回 AID-RID请求结果消息, 将目的设备的 AID与 RID的映射信息 发送给漫游网关;
所述漫游网关将目的设备的 AID-RID 的映射信息转发给漫游地网络的
ASN的步骤包括: 漫游网关通过向漫游地网络的 ASN发送 AID-RID查询结 果消息将目的设备的 AID与 RID的映射信息发送给漫游地网络的 ASN。
所述漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送 给该漫游地网络的 ASN的步骤包括:所述漫游终端通过发送附着请求消息向 漫游地网络的 ASN请求附着, 在所述附着请求消息中携带漫游终端的 AID; 所述漫游地网络的 ASN向漫游网关请求接入的步骤包括:漫游地网络的 ASN通过发送接入请求消息, 向漫游网关请求接入;
所述漫游网关向漫游终端归属网络的认证中心请求认证的步骤包括: 漫 游网关通过发送认证请求消息, 向漫游终端归属网络的认证中心请求认证; 所述认证中心将认证结果通知漫游网关的步骤包括: 认证中心通过发送 认证结果消息, 将认证结果通知漫游网关;
所述漫游网关将接入结果通知漫游地网络的 ASN的步骤包括:漫游网关 通过发送接入响应消息, 将接入结果通知漫游地网络的 ASN; 所述漫游地网络的 ASN将附着结果通知漫游终端的步骤包括:漫游地网 络的 ASN通过发送附着响应消息, 将附着结果通知漫游终端。
在漫游地网络的 ASN上保存有本网 AID范围的配置信息, 该漫游地网 络的 ASN才艮据所述本网 AID范围的配置信息区分本网的终端和漫游终端; 在漫游网关上保存有与该漫游网关连接的各网络 AID范围的配置信息, 所述漫游网关根据所述各网络 AID范围的配置信息, 区分不同网络的终端。
本发明还提供一种实现网间漫游的系统, 该系统应用于身份标识与位置 标识分离的网络中, 在该网络中以 AID作为终端的用户身份标识, 以 RID作 为终端的位置标识, 该系统包括: 漫游终端、 目的设备、 漫游地网络的 ASN 和漫游网关, 其中:
所述漫游终端设置为: 在附着到漫游地网络的 ASN后, 向目的设备发送 首数据包, 该首数据包的目的地址为目的设备的 AID;
所述漫游地网络的 ASN设置为: 在接收到首数据包后, 在本地查询 AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的设备不属于漫 游地网络, 则向漫游网关请求查询目的设备的 RID; 并在接收到漫游网关返 回的目的设备的 RID后, 根据该 RID, 向目的设备发送漫游终端的后续数据 包;
所述漫游网关设置为: 从目的设备的归属网络查询目的设备的 RID, 并 返回给漫游地网络的 ASN。
所述漫游地网络的 ASN是设置为以如下方式向漫游网关请求查询目的 设备的 RID:将目的设备的 AID发送给漫游网关,请求查询目的设备的 RID; 所述漫游网关是设置为:
接收到目的设备的 AID后, 解析该 AID, 获知目的设备的归属网络, 将 目的设备的 AID发送给该目的设备归属网络的映射转发平面, 请求查询目的 设备的 RID;
接收并保存目的设备归属网络的映射转发平面根据目的设备的 AID查询 到到的目的设备的 AID-RID的映射信息, 并转发给漫游地网络的 ASN。
所述漫游终端还设置为: 向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送给该漫游地网络的 ASN;
所述漫游地网络的 ASN还设置为: 根据漫游终端的 AID识别出漫游终 端不属于本地网络, 向漫游网关请求接入; 以及接收漫游网关发送的接入结 果, 并将附着结果通知所述漫游终端;
所述漫游网关还设置为:根据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归属网络的认证中心请求认证; 以及接收所述认证中心发送的认 证结果, 并将接入结果通知漫游地网络的 ASN。
所述漫游地网络的 ASN是设置为以如下方式根据目的设备的 RID,向目 的设备发送漫游终端的后续数据包:
将漫游终端的数据包进行重封装, 釆用目的设备的 RID 和漫游终端的
RID分别作为重封装的数据包的目的地址和源地址,通过与目的 ASN之间的 媒体面通道将该重封装的数据包发送给目的 ASN;
目的 ASN对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
所述漫游地网络的 ASN是设置为以如下方式根据目的设备的 RID,向目 的设备发送漫游终端的后续数据包:
将漫游终端的数据包进行重封装, 釆用目的设备的 RID 和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 将该重封装的数据包送 给漫游网关;
漫游网关根据目的设备的 RID, 将该重封装的数据包发送给目的 ASN; 目的 ASN对对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
所述漫游地网络的 ASN还设置为: 在向漫游网关请求查询目的设备的 RID时, 将所述首数据包发送给漫游网关;
所述漫游网关还设置为:从目的设备的归属网络查询目的设备的 RID时, 将所述首数据包发送给目的设备的归属网络;
目的设备的归属网络还设置为: 在查询到目的设备的 RID后, 根据该查 询到的 RID将所述首数据包发送给目的 ASN。 所述漫游地网络的 ASN是设置为通过向漫游网关发送 AID-RID查询消 息, 在该 AID-RID 查询消息中携带目的设备的 AID, 请求查询目的设备的 RID;
所述漫游网关是设置为:
通过向目的设备归属网络的映射转发平面发送 AID-RID请求消息, 在该
AID-RID请求消息中携带目的设备的 AID , 请求查询目的设备的 RID;
接收目的设备归属网络的映射转发平面返回的 AID-RID请求结果消息, 得到目的设备的 AID与 RID的映射信息; 以及
通过向漫游地网络的 ASN发送 AID-RID查询结果消息将目的设备的 AID 与 RID的映射信息发送给漫游地网络的 ASN。
所述漫游终端是设置为以如下方式向漫游地网络的 ASN请求附着,将漫 游终端的 AID发送给该漫游地网络的 ASN:通过发送附着请求消息向漫游地 网络的 ASN请求附着, 在所述附着请求消息中携带漫游终端的 AID;
所述漫游地网络的 ASN是设置为: 通过发送接入请求消息, 向漫游网关 请求接入; 以及通过发送附着响应消息, 将附着结果通知漫游终端
所述漫游网关是设置为: 通过发送认证请求消息, 向漫游终端归属网络 的认证中心请求认证; 接收认证中心发送的认证结果消息; 以及通过发送接 入响应消息, 将接入结果通知漫游地网络的 ASN。
在漫游地网络的 ASN上保存有本网 AID范围的配置信息, 该漫游地网 络的 ASN还设置为根据所述本网 AID范围的配置信息区分本网的终端和漫 游终端;
在漫游网关上保存有与该漫游网关连接的各网络 AID范围的配置信息, 所述漫游网关还设置为根据所述各网络 AID范围的配置信息, 区分不同网络 的终端。
本发明还提供一种实现网间漫游的方法, 方法应用于身份标识与位置标 识分离的网络中, 在该网络中以 AID作为终端的用户身份标识, 以 RID作为 终端的位置标识, 该方法包括:
漫游终端附着到漫游地网络的 ASN后, 向目的设备发送首数据包, 该首 数据包的目的地址为目的设备的 AID;
所述漫游地网络的 ASN接收到首数据包后, 在漫游地网络的 ASN本地 查询 AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的设备属于 漫游地网络, 则请求本地的映射转发平面查询目的设备的 RID;
本地的映射转发平面查询目的设备的 RID,并返回给漫游地网络的 ASN; 以及
漫游地网络的 ASN根据目的设备的 RID,向目的设备发送漫游终端的后 续数据包。
该方法还包括:
所述漫游地网络的 ASN在向本地的映射转发平面请求查询目的设备的
RID时, 还将所述首数据包发送给该映射转发平面;
本地的映射转发平面在查询到目的设备的 RID后, 根据该查询到的 RID 将所述首数据包发送给目的 ASN。
本发明还提供一种实现网间漫游的系统, 该系统应用于身份标识与位置 标识分离的网络中, 在该网络中以 AID作为终端的用户身份标识, 以 RID作 为终端的位置标识, 该系统包括: 漫游终端、 目的设备、 漫游地网络的 ASN 和本地的映射转发平面, 其中:
所述漫游终端设置为: 在附着到漫游地网络的 ASN后, 向目的设备发送 首数据包, 该首数据包的目的地址为目的设备的 AID;
所述漫游地网络的 ASN设置为: 在接收到首数据包后, 在漫游地网络的
ASN本地查询 AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的 设备属于漫游地网络, 则请求本地的映射转发平面查询目的设备的 RID; 并 在接收到本地的映射转发平面返回的目的设备的 RID后, 根据该 RID , 向目 的设备发送漫游终端的后续数据包;
本地的映射转发平面设置为: 查询目的设备的 RID, 并返回给漫游地网 络的 ASN。
所述漫游地网络的 ASN还设置为:在向本地的映射转发平面请求查询目 的设备的 RID时, 将所述首数据包发送给该映射转发平面; 本地的映射转发平面还设置为: 在查询到目的设备的 RID后, 根据该查 询到的 RID将所述首数据包发送给目的 ASN。
本发明还提供一种查询方法, 其特征在于, 该方法应用于身份标识与位 置标识分离的网络中, 在该网络中以 AID作为终端的用户身份标识, 以 RID 作为终端的位置标识, 该方法包括:
ASN将设备的 AID发送给漫游网关, 请求查询设备的 RID;
漫游网关接收到设备的 AID后, 解析该 AID, 获知该设备的归属网络, 将该设备的 AID发送给设备归属网络的映射转发平面,请求查询设备的 RID; 以及
设备归属网络的映射转发平面根据设备的 AID查询到对应的 RID后,将 设备的 AID-RID的映射信息发送给漫游网关,漫游网关保存后,转发给 ASN。
所述 ASN将设备的 AID发送给漫游网关, 请求查询设备的 RID的步骤 包括: 所述 ASN通过向漫游网关发送 AID-RID查询消息 , 在该 AID-RID查 询消息中携带设备的 AID, 请求查询设备的 RID;
所述漫游网关将该设备的 AID发送给设备归属网络的映射转发平面, 请 求查询设备的 RID的步骤包括: 所述漫游网关通过向设备归属网络的映射转 发平面发送 AID-RID请求消息, 在该 AID-RID请求消息中携带设备的 AID , 请求查询设备的 RID;
所述设备归属网络的映射转发平面将设备的 AID-RID的映射信息发送给 漫游网关的步骤包括: 设备归属网络的映射转发平面通过向漫游网关返回 AID-RID请求结果消息, 将设备的 AID与 RID的映射信息发送给漫游网关; 所述漫游网关将设备的 AID-RID的映射信息转发给 ASN的步骤包括: 漫游网关通过向 ASN发送 AID-RID查询结果消息将设备的 AID与 RID的映 射信息发送给 ASN。
本发明还提供一种查询系统, 该系统应用于身份标识与位置标识分离的 网络中, 在该网络中以 AID作为终端的用户身份标识, 以 RID作为终端的位 置标识, 包括: ASN、 漫游网关和设备归属网络的映射转发平面;
所述 ASN设置为:将设备的 AID发送给漫游网关,请求查询设备的 RID; 所述漫游网关设置为: 在接收到设备的 AID后, 解析该 AID, 获知该设 备的归属网络, 将该设备的 AID发送给设备归属网络的映射转发平面, 请求 查询设备的 RID; 并在接收到设备归属网络的映射转发平面返回的 AID-RID 的映射信息后, 进行保存并转发给 ASN;
所述设备归属网络的映射转发平面设置为: 在根据设备的 AID查询到对 应的 RID后, 将设备的 AID-RID的映射信息发送给漫游网关。
所述 ASN是设置为: 通过向漫游网关发送 AID-RID 查询消息, 在该 AID-RID查询消息中携带设备的 AID , 请求查询设备的 RID;
所述漫游网关是设置为: 通过向设备归属网络的映射转发平面发送 AID-RID请求消息, 在该 AID-RID请求消息中携带设备的 AID, 请求查询设 备的 RID;以及通过向 ASN发送 AID-RID查询结果消息将设备的 AID与 RID 的映射信息发送给 ASN
设备归属网络的映射转发平面是设置为: 通过向漫游网关返回 AID-RID 请求结果消息, 将设备的 AID与 RID的映射信息发送给漫游网关。
本发明还提供一种网络附着方法, 该方法应用于身份标识与位置标识分 离的网络中, 在该网络中以 AID作为终端的用户身份标识, 以 RID作为终端 的位置标识, 该方法包括:
漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送给该 漫游地网络的 ASN;
漫游地网络的 ASN才艮据漫游终端的 AID识别出漫游终端不属于本地网 络, 向漫游网关请求接入;
漫游网关才艮据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归 属网络的认证中心请求认证;
认证中心对漫游终端进行认证后, 将认证结果通知漫游网关; 以及 漫游网关将接入结果通知漫游地网络的 ASN, 漫游地网络的 ASN将附 着结果通知漫游终端。
所述漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送 给该漫游地网络的 ASN的步骤包括:所述漫游终端通过发送附着请求消息向 漫游地网络的 ASN请求附着, 在所述附着请求消息中携带漫游终端的 AID; 所述漫游地网络的 ASN向漫游网关请求接入的步骤包括:所述漫游地网 络的 ASN通过发送接入请求消息, 向漫游网关请求接入;
所述漫游网关向漫游终端归属网络的认证中心请求认证的步骤包括: 漫 游网关通过发送认证请求消息, 向漫游终端归属网络的认证中心请求认证; 所述认证中心将认证结果通知漫游网关的步骤包括: 认证中心通过发送 认证结果消息, 将认证结果通知漫游网关;
所述漫游网关将接入结果通知漫游地网络的 ASN的步骤包括:漫游网关 通过发送接入响应消息, 将接入结果通知漫游地网络的 ASN;
所述漫游地网络的 ASN将附着结果通知漫游终端的步骤包括:漫游地网 络的 ASN通过发送附着响应消息, 将附着结果通知漫游终端。
本发明还提供一种网络附着系统, 该系统应用于身份标识与位置标识分 离的网络中, 在该网络中以 AID作为终端的用户身份标识, 以 RID作为终端 的位置标识, 该系统包括: 漫游终端、 漫游地网络的 ASN、 漫游网关和漫游 终端归属网络的认证中心;
所述漫游终端设置为: 向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送给该漫游地网络的 ASN;
所述漫游地网络的 ASN设置为: 根据漫游终端的 AID识别出漫游终端 不属于本地网络, 向漫游网关请求接入; 并在接收到漫游网关返回的接入结 果后, 通知漫游终端附着结果;
所述漫游网关设置为: 根据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归属网络的认证中心请求认证; 并在接收到漫游终端归属网络的 认证中心返回的认证结果后, 通知漫游地网络的 ASN接入结果;
所述漫游终端归属网络的认证中心设置为: 对漫游终端进行认证后, 将 认证结果通知漫游网关。
所述漫游终端是设置为:通过发送附着请求消息向漫游地网络的 ASN请 求附着, 在所述附着请求消息中携带漫游终端的 AID;
漫游地网络的 ASN是设置为: 通过发送接入请求消息, 向漫游网关请求 接入; 以及通过发送附着响应消息, 将附着结果通知漫游终端
漫游网关是设置为: 通过发送认证请求消息, 向漫游终端归属网络的认 证中心请求认证; 以及通过发送接入响应消息, 将接入结果通知漫游地网络 的 ASN;
认证中心是设置为: 通过发送认证结果消息, 将认证结果通知漫游网关。
本发明具有如下有益效果:
1 )网络简单, 由漫游网关与各个网络之间进行互联互通, 在某一个网络 看来, 漫游网关是其网络上的一部分, 漫游出去的业务是从漫游网关接入到 归属网络中的, 某一网络不需要与其他漫游伙伴建立复杂的网络结构, 简化 了网络结构。
2 )漫游网关具备网络隔离功能, 可以对网络屏蔽其它漫游伙伴的网络结 构, 网络只需要与漫游网关进行与通信相关的数据配置即可, 不需要了解漫 游伙伴的网络结构。
3 )漫游网关具备网间结算和统计功能, 可以统计出各个漫游伙伴之间的 业务流量, 便于计费结算, 制定业务开展计划, 进行运营优化等。
4 )便于快速建立漫游关系, 网络只需要与漫游网关进行互联互通, 在技 术上就可以同时开通与多个网络的漫游业务, 节约了建设时间。
附图说明
图 1为身份标识与位置标识分离的网络的架构图;
图 2为另一种身份标识与位置标识分离的网络的架构图;
图 3为第三种身份标识与位置标识分离的网络的架构图;
图 4为本发明连接不同网络的结构图;
图 5为本发明实现网间漫游的方法的流程图。
具体实施方式 图 1所示为基于 IP网络路由器实现身份标识和位置标识分离的网络的架 构, 其中各个网元的逻辑功能如下:
接入服务节点 (ASN ) , 负责为各种移动终端提供接入服务, 为接入的 终端分配路由标识 (RID ) , 并将终端的数据报文进行封装后发送到核心网 中传输, 并负责查询通信对端的位置, 如果 ASN本地没有保存通信对端的路 由位置信息, 就通过映射转发平面查找。
映射转发平面, 由多个身份位置寄存器 /分组转发功能(ILR/PTF )组成, 负责维护网络中终端的身份标识和路由标识的映射信息, 并向 ASN和其它 ILR提供查询服务。
认证中心, 负责记录终端类别和服务等级等信息, 在终端接入时, 对终 端进行合法性认证和授权。 认证中心支持网络与终端间的双向鉴权。
IP骨干网,是 ASN之间的互联网络,主要功能是根据数据报文中的路由 标识进行选路和转发数据报文, 把 ASN发出的数据转发到正确的目的地; IP 网络由核心交换路由器(CSR )组成。 IP骨干网与现有的 IP网络相同, 不需 要进行任何修改。
互通网关(ISN ) , 是身份标识与位置标识分离网络与其它网络的互通节 点, 两类不同的网络必须通过 ISN进行通信。
无线接入网, 负责提供并维护终端到 ASN之间的二层链路, 在蜂窝移动 网络中, 负责无线资源分配和管理等。 无线网络可以是 WCDMA (宽带码分 多址), TD-SCDMA (时分 -同步码分多址), CDMA2000 (码分多址 2000 ) , LTE (长期演进)等无线网络。
图 2所示为另一种实现身份标识和位置标识分离的网络的架构, 本架构 将网络划分为接入网和骨干网。 接入网位于骨干网的边缘, 用于负责所有终 端的接入。 骨干网负责通过接入网接入的终端间数据报文的路由和转发。 接 入网与骨干网在拓朴关系上没有重叠。 本架构的网络中有两种标识类型: 接入标识( AID: Access Identifier )和 路由标识(RID: Routing Identifier ) 。 其中, AID是终端的用户身份识别, 用于标识终端用户 (也简称为用户) 的身份, 网络为每个终端用户唯一分配 一个 AID, 在接入网使用, 在终端的移动过程中始终保持不变; RID是为终 端分配的位置标识, 在骨干网使用。
本架构中, 接入网络的终端可以是移动终端、 固定终端和游牧终端中的 一种或多种, 如手机、 固定电话、 电脑和应用服务器等等。
本架构中, 接入网用于为终端提供到二层(物理层和链路层)接入手段, 维护终端与 ASN之间的物理接入链路。 可能的二层接入手段包括: 蜂窝移动 网技术(GSM/CDMA/ TD-SCDMA/WCDMA/ WiMAX/LTE ) 、 DSL、 宽带光 纤接入或 WiFi接入等等。
本架构的骨干网组网时分为两个平面: 广义转发平面和映射转发平面, 还包括接入服务节点 (ASN: Access Service Node)和认证中心。
ASN是广义转发平面、 映射转发平面与接入网的分界节点, 具有与接入 网、 广义转发平面和映射转发平面的接口。 用于为终端提供接入服务、 维护 终端与网络的连接, 为终端分配 RID, 到映射转发平面登记注册和查询终端 的 RID, 维护 AID-RID的映射信息, 以及实现数据 4艮文的路由和转发。
广义转发平面主要用于根据数据报文中的 RID进行选路和转发以 RID为 目的地址的数据报文,广义转发平面内的数据路由转发行为与传统 IP网络一 致。 如图所示, 广义转发平面的主要网元包括通用路由器 (CR: Common Router )和互联月良务节点 ( ISN: Interconnect Service Node )
映射转发平面主要用于保存终端的身份位置映射信息(即 AID-RID的映 射信息) , 处理对终端位置的登记注册和查询, 路由并转发以 AID为目的地 址的数据报文。 如图所示, 映射转发平面的主要网元包括身份位置寄存器 /分 组转发功能 ( ILR/PTF: Identity Location Register/Packet Transfer Function ) 。
认证中心, 用于记录本架构网络终端用户的属性信息如用户类别、 认证 信息和用户服务等级等, 完成对终端的接入认证和授权, 还可具有计费功能。 认证中心支持终端与网络间的双向认证, 可产生用于认证、 完整性保护和加 密的用户安全信息。
在另一实施例中, ASN在架构的划分中独立于骨干网, 位于骨干网和接 入网的分界节点, 具有与接入网和骨干网的接口, 如图 3所示。 其实际完成 的功能与图 2是一样的。
如图 4所示, 本发明通过在网络之间设置漫游网关, 各网络均建立与漫 游网关的网络互联关系, 包括控制面通道(信令通道)和媒体面通道的互通 (媒体面通道指 ASN之间的数据通道; 如果各网络之间可以直接互通, 则媒 体面通道的互通是可选的), 实现对用户在各网络之间漫游的支持, 图 4中, 三个网络 A、 B和 C之间分别与漫游网关进行互联互通, 而不需要每个网络 之间建立点到点的漫游关系。
漫游网关在各网络看来, 是其网络的一个组成部分, 可以与认证中心进 行通信, 传递认证信息, 转发数据等。
在身份标识与位置标识分离的网络中, 由于映射转发平面的存在, 漫游 网关需要与每个网络的映射转发平面通信,漫游用户拜访网络的 ASN可以通 过漫游网关从归属网络查询到漫游用户的 AID-RID的映射信息。
一个网络可以与一个或者多个漫游网关互连, 也就是说, 一个具备漫游 能力的网络至少有一个 ILR/PTF与漫游网关通信, 漫游网关通过与其通信的 ILR/PTF, 向用户漫游地的 ASN提供 AID-RID的映射信息的查询功能以及首 包转发功能。
漫游网关与 ASN的网络地位是相同的, 只是功能上有些差异。
网络的 ASN必须具备 AID的识别能力, 能够区分归属网络和漫游网络 的终端和服务器的 AID。
漫游网关也必须具备 AID的识别能力, 可以将不同网络的终端和服务器 的 AID区分开进行处理。
为了充分利用现有骨干网络, ASN之间的数据包是标准的 IP包,保证可 以在 IP骨干网络上进行路由。
图 5所示为本发明实现网间漫游的方法, 4叚设漫游用户通过漫游网络 A 中的 ASN-A接入, 去访问归属地的应用服务器(APP Server ) , 该应用服务 器位于漫游用户归属网络的 ASN-B下,归属地部署了认证中心和 ILR等设备, 访问归属地的应用服务器的过程, 包括:
501 : 用户的终端(漫游终端)发起附着请求,发送附着请求消息(Attach Req )到漫游地的 ASN ( ASN-A ) , 在附着请求消息中携带用户的 AID;
502: ASN-A解析用户的 AID, 发现用户为漫游用户, 则向漫游网关发 送接入请求 ( Access Req ) 消息, 请求接入;
可以通过在 ASN上保存本网 AID范围的配置信息, 用以区分本网络的 用户和漫游用户。
503:漫游网关解析用户的 AID,获知并查找用户的归属地网络(网络 B ); 向网络 B的认证中心 (已预先配置好)发送认证请求(Auth Req ) 消息; 在漫游网关上保存有各网络 AID范围的配置信息, 漫游网关根据该配置 信息区分不同网络的终端, 并查找相应的网络。
504: 接收到 Auth Req的认证中心对用户进行认证, 并向漫游网关返回 认证结果(Auth Res ) 消息, 将认证结果通知漫游网关;
505: 漫游网关接收到 Auth Res消息后, 向 ASN-A返回接入响应消息 ( Access Res ) , 将接入结果通知 ASN-A;
506: ASN-A接收到接入响应消息后向终端返回附着响应消息 ( Attach Res ) , 将附着结果通知漫游终端;
507:在成功接入的情况下,源终端发起业务请求,发送首数据包(Service First Data ) , 假设源终端访问归属地的应用服务器, 其 AID为 AID-B, 首数 据包的源地址为源终端的 AID, 目的地址为 AID-B;
508: ASN-A接收到源终端发送的数据包后, 在本地查询 AID-B对应的 RID, 若未查找到对应的 RID, 则解析 AID-B, 判断目的设备是否属于漫游地 网络, 若不属于, 则向漫游网关发出 AID-RID查询消息( AID-RID Query ) , 在 AID-RID Query中携带 AID-B , 并将首数据包发送给漫游网关;
若目的设备属于漫游地网络, 则 ASN-A从本地的映射转发平面查询
AID-B对应的 RID , 并将该首数据包发送给本地的映射转发平面, 本地的映 射转发平面查询到 AID-B对应的 RID后,根据该 RID将首数据包发送给目的 ASN, 并将目的设备的 AID-RID的映射信息发送给 ASN-A, ASN-A根据目 的设备的 AID-RID的映射信息将漫游终端的后续数据包发送给目的 ASN。 509: 漫游网关接收到 AID-RID Query后, 解析目的设备的 AID, 获知目 的设备所属的网络(网络 B ) , 向网络 B的映射转发平面发送 AID-RID Req (请求) 消息, 在 AID-RID Req中携带 AID-B , 并将接收到的首数据包转发 给网络 B的映射转发平面;
510: 网络 B的映射转发平面根据 AID-B查询对应的 RID, 向漫游网关 返回 AID-RID请求结果( AID-RID Res )消息, 将 AID-B与 RID的映射信息 发送给漫游网关, 漫游网关保存 AID-B与 RID的映射信息;
511 :漫游网关向 ASN-A返回 AID-RID Query Res消息,将 AID-B与 RID 的映射信息发送给 ASN-A, ASN-A在本地保存 AID-B与 RID的映射信息; 512: 网络 B的映射转发平面根据 AID-B对应的 RID , 将源终端的首数 据包发送给 ASN-B, ASN-B将首数据包转发给源终端访问的应用服务器; 上述步骤 511后, ASN-A已获得 AID-B对应的 RID, 后续数据包的发送 过程, 根据网络的组网不同, 有两种可能的情况, 分别如步骤 513和 514所 述。
513:如果漫游网络中的 ASN-A与归属网络中的 ASN-B的媒体面通道可 以直接通信(ASN-A与网络 B的认证中心和映射平面不直接通信),则 ASN-A 对漫游终端的媒体面数据包进行重封装, 釆用目的设备的 RID和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 发送给 ASN-B , ASN-B 对接收到的 ASN-A重封装的数据包进行解封装,将该数据包恢复为漫游终端 的媒体面数据包, 发送给应用服务器;
当 ASN-A与 ASN-B的媒体面可以通信时, 媒体面数据无需经过漫游网 关。
514:如果漫游网络中的 ASN-A与归属网络中的 ASN-B的媒体面无法直 接通信(ASN-A与网络 B的认证中心和映射平面不直接通信) , 则 ASN-A 对终端的媒体面数据包进行重封装, 釆用目的设备的 RID和漫游终端的 RID 分别作为重封装的数据包的目的地址和源地址, 发送给漫游网关, 漫游网关 将该重封装的数据包发送到 ASN-B, ASN-B对接收到的 ASN-A重封装的数 据包进行解封装, 恢复为漫游终端的媒体面数据包, 将漫游终端的媒体面数 据包发送给应用服务器。
漫游网关需要查找数据包的目的 AID和 RID的映射信息,以便将数据包 发给正确的 ASN, ASN再发给对应的目的终端或者应用服务器。 漫游网关不修改 ASN发出的数据包的封装格式和内容,只会对数据进行 分析和统计, 对收到的每个数据包进行 AID-RID的映射关系查找后, 发送到 正确的 ASN。
本发明还提供了一种实现网间漫游的系统, 应用于身份标识与位置标识 分离的网络中, 该系统包括: 漫游终端、 目的设备、 漫游地网络的 ASN和漫 游网关, 其中:
漫游终端, 用于在附着到漫游地网络的 ASN后, 向目的设备发送首数据 包, 该首数据包的目的地址为目的设备的 AID;
漫游地网络的 ASN, 用于在接收到首数据包后, 在本地查询 AID-RID的 映射信息, 若未查找到目的设备的 RID, 并且目的设备不属于漫游地网络, 则向漫游网关请求查询目的设备的 RID; 并在接收到漫游网关返回的目的设 备的 RID后, 根据该 RID, 向目的设备发送漫游终端的后续数据包;
漫游地网络的 ASN向漫游网关请求查询目的设备的 RID,漫游网关查询 目的设备的 RID的过程包括:
漫游地网络的 ASN将目的设备的 AID发送给漫游网关, 请求查询目的 设备的 RID;
漫游网关接收到目的设备的 AID后, 解析该 AID, 获知目的设备的归属 网络, 将目的设备的 AID发送给该目的设备归属网络的映射转发平面, 请求 查询目的设备的 RID;
目的设备归属网络的映射转发平面根据目的设备的 AID 查询到对应的 RID后, 将目的设备的 AID-RID的映射信息发送给漫游网关, 漫游网关保存 后, 转发给漫游地网络的 ASN。
漫游网关, 用于从目的设备的归属网络查询目的设备的 RID , 并返回给 漫游地网络的 ASN。
漫游终端附着到漫游地网络的 ASN的过程包括:
漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送给该 漫游地网络的 ASN; 漫游地网络的 ASN才艮据漫游终端的 AID识别出漫游终端不属于本地网 络, 向漫游网关请求接入;
漫游网关才艮据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归 属网络的认证中心请求认证;
认证中心对漫游终端进行认证后, 将认证结果通知漫游网关;
漫游网关将接入结果通知漫游地网络的 ASN, 漫游地网络的 ASN将附 着结果通知漫游终端。
漫游地网络的 ASN根据目的设备的 RID,向目的设备发送漫游终端的后 续数据包的过程包括:
漫游网络中的 ASN将漫游终端的数据包进行重封装, 釆用目的设备的
RID和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 通过 与目的 ASN之间的媒体面通道将该重封装的数据包发送给目的 ASN;
目的 ASN对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备; 或
漫游网络中的 ASN将漫游终端的数据包进行重封装, 釆用目的设备的
RID和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 将该 重封装的数据包送给漫游网关;
漫游网关根据目的设备的 RID, 将该重封装的数据包发送给目的 ASN; 目的 ASN对对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
漫游地网络的 ASN, 还用于在向漫游网关请求查询目的设备的 RID时, 将首数据包发送给漫游网关;
漫游网关, 还用于从目的设备的归属网络查询目的设备的 RID时, 将首 数据包发送给目的设备的归属网络;
目的设备的归属网络, 还用于在查询到目的设备的 RID后, 根据该查询 到的 RID将首数据包发送给目的 ASN。
漫游地网络的 ASN 通过向漫游网关发送 AID-RID 查询消息, 在该 AID-RID查询消息中携带目的设备的 AID , 请求查询目的设备的 RID; 漫游网关通过向目的设备归属网络的映射转发平面发送 AID-RID请求消 息, 在该 AID-RID请求消息中携带目的设备的 AID, 请求查询目的设备的 RID;
目的设备归属网络的映射转发平面通过向漫游网关返回 AID-RID请求结 果消息, 将目的设备的 AID与 RID的映射信息发送给漫游网关;
漫游网关通过向漫游地网络的 ASN发送 AID-RID查询结果消息将目的 设备的 AID与 RID的映射信息发送给漫游地网络的 ASN。
漫游终端通过发送附着请求消息向漫游地网络的 ASN请求附着,在附着 请求消息中携带漫游终端的 AID;
漫游地网络的 ASN通过发送接入请求消息, 向漫游网关请求接入; 漫游网关通过发送认证请求消息, 向漫游终端归属网络的认证中心请求 认证;
认证中心通过发送认证结果消息, 将认证结果通知漫游网关;
漫游网关通过发送接入响应消息, 将接入结果通知漫游地网络的 ASN; 漫游地网络的 ASN通过发送附着响应消息, 将附着结果通知漫游终端。 在漫游地网络的 ASN上保存有本网 AID范围的配置信息, 该漫游地网 络的 ASN才艮据本网 AID范围的配置信息区分本网的终端和漫游终端;
在漫游网关上保存有与该漫游网关连接的各网络 AID范围的配置信息, 漫游网关根据各网络 AID范围的配置信息, 区分不同网络的终端。
系统中网元的其它功能请参照方法内容的描述。
尽管为示例目的, 已经公开了本发明的优选实施例, 本领域的技术人员 将意识到各种改进、 增加和取代也是可能的, 因此, 本发明的范围应当不限 于上述实施例。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
工业实用性
本发明具有如下有益效果:
1 )网络简单, 由漫游网关与各个网络之间进行互联互通, 在某一个网络 看来, 漫游网关是其网络上的一部分, 漫游出去的业务是从漫游网关接入到 归属网络中的, 某一网络不需要与其他漫游伙伴建立复杂的网络结构, 简化 了网络结构。
2 )漫游网关具备网络隔离功能, 可以对网络屏蔽其它漫游伙伴的网络结 构, 网络只需要与漫游网关进行与通信相关的数据配置即可, 不需要了解漫 游伙伴的网络结构。
3 )漫游网关具备网间结算和统计功能, 可以统计出各个漫游伙伴之间的 业务流量, 便于计费结算, 制定业务开展计划, 进行运营优化等。
4 )便于快速建立漫游关系, 网络只需要与漫游网关进行互联互通, 在技 术上就可以同时开通与多个网络的漫游业务, 节约了建设时间。

Claims

权 利 要 求 书
1、 一种实现网间漫游的方法, 其特征在于, 该方法应用于身份标识与位 置标识分离的网络中, 在该网络中以接入标识 (AID )作为终端的用户身份 标识, 以路由标识(RID )作为终端的位置标识, 该方法包括:
漫游终端附着到漫游地网络的接入服务节点 (ASN )后, 向目的设备发 送首数据包, 该首数据包的目的地址为目的设备的 AID;
所述漫游地网络的 ASN接收到首数据包后, 在漫游地网络的 ASN本地 查询 AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的设备不属 于漫游地网络, 则向漫游网关请求查询目的设备的 RID;
漫游网关从目的设备的归属网络查询目的设备的 RID , 并返回给漫游地 网络的 ASN; 以及
漫游地网络的 ASN根据目的设备的 RID,向目的设备发送漫游终端的后 续数据包。
2、 如权利要求 1所述的方法, 其中, 所述漫游地网络的 ASN向漫游网 关请求查询目的设备的 RID的步骤包括:所述漫游地网络的 ASN将目的设备 的 AID发送给漫游网关, 请求查询目的设备的 RID;
所述漫游网关从目的设备的归属网络查询目的设备的 RID, 并返回给漫 游地网络的 ASN的步骤包括:
漫游网关接收到目的设备的 AID后, 解析该 AID, 获知目的设备的归属 网络, 将目的设备的 AID发送给该目的设备归属网络的映射转发平面, 请求 查询目的设备的 RID;
目的设备归属网络的映射转发平面根据目的设备的 AID 查询到对应的 RID后, 将目的设备的 AID-RID的映射信息发送给漫游网关, 漫游网关保存 后, 转发给漫游地网络的 ASN。
3、 如权利要求 1所述的方法, 其中, 所述漫游终端附着到漫游地网络的
ASN包括:
漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送给该 漫游地网络的 ASN;
漫游地网络的 ASN才艮据漫游终端的 AID识别出漫游终端不属于本地网 络, 向漫游网关请求接入;
漫游网关才艮据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归 属网络的认证中心请求认证;
认证中心对漫游终端进行认证后, 将认证结果通知漫游网关; 以及 漫游网关将接入结果通知漫游地网络的 ASN, 漫游地网络的 ASN将附 着结果通知漫游终端。
4、 如权利要求 1所述的方法, 其中, 所述漫游地网络的 ASN根据目的 设备的 RID, 向目的设备发送漫游终端的后续数据包的步骤包括:
漫游网络中的 ASN将漫游终端的数据包进行重封装, 釆用目的设备的 RID和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 通过 与目的 ASN之间的媒体面通道将该重封装的数据包发送给目的 ASN; 以及 目的 ASN对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
5、 如权利要求 1所述的方法, 其中, 所述漫游地网络的 ASN根据目的 设备的 RID, 向目的设备发送漫游终端的后续数据包的步骤包括:
漫游网络中的 ASN将漫游终端的数据包进行重封装, 釆用目的设备的 RID和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 将该 重封装的数据包发送给漫游网关;
漫游网关根据目的设备的 RID, 将该重封装的数据包发送给目的 ASN; 以及
目的 ASN对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
6、 如权利要求 1所述的方法, 该方法还包括:
所述漫游地网络的 ASN在向漫游网关请求查询目的设备的 RID时,还将 所述首数据包发送给漫游网关;
漫游网关从目的设备的归属网络查询目的设备的 RID时, 还将所述首数 据包发送给目的设备的归属网络; 以及
目的设备的归属网络在查询到目的设备的 RID后, 根据该查询到的 RID 将所述首数据包发送给目的 ASN。
7、 如权利要求 2所述的方法, 其中,
所述漫游地网络的 ASN将目的设备的 AID发送给漫游网关, 请求查询 目的设备的 RID的步骤包括: 所述漫游地网络的 ASN通过向漫游网关发送 AID-RID查询消息, 在该 AID-RID查询消息中携带目的设备的 AID , 请求查 询目的设备的 RID;
所述漫游网关将目的设备的 AID发送给该目的设备归属网络的映射转发 平面, 请求查询目的设备的 RID的步骤包括: 所述漫游网关通过向目的设备 归属网络的映射转发平面发送 AID-RID请求消息,在该 AID-RID请求消息中 携带目的设备的 AID, 请求查询目的设备的 RID;
所述目的设备归属网络的映射转发平面将目的设备的 AID-RID的映射信 息发送给漫游网关的步骤包括: 目的设备归属网络的映射转发平面通过向漫 游网关返回 AID-RID请求结果消息, 将目的设备的 AID与 RID的映射信息 发送给漫游网关;
所述漫游网关将目的设备的 AID-RID 的映射信息转发给漫游地网络的 ASN的步骤包括: 漫游网关通过向漫游地网络的 ASN发送 AID-RID查询结 果消息将目的设备的 AID与 RID的映射信息发送给漫游地网络的 ASN。
8、 如权利要求 3所述的方法, 其中,
所述漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送 给该漫游地网络的 ASN的步骤包括:所述漫游终端通过发送附着请求消息向 漫游地网络的 ASN请求附着, 在所述附着请求消息中携带漫游终端的 AID; 所述漫游地网络的 ASN向漫游网关请求接入的步骤包括:漫游地网络的 ASN通过发送接入请求消息, 向漫游网关请求接入; 所述漫游网关向漫游终端归属网络的认证中心请求认证的步骤包括: 漫 游网关通过发送认证请求消息, 向漫游终端归属网络的认证中心请求认证; 所述认证中心将认证结果通知漫游网关的步骤包括: 认证中心通过发送 认证结果消息, 将认证结果通知漫游网关;
所述漫游网关将接入结果通知漫游地网络的 ASN的步骤包括:漫游网关 通过发送接入响应消息, 将接入结果通知漫游地网络的 ASN;
所述漫游地网络的 ASN将附着结果通知漫游终端的步骤包括:漫游地网 络的 ASN通过发送附着响应消息, 将附着结果通知漫游终端。
9、 如权利要求 3所述的方法, 其中,
在漫游地网络的 ASN上保存有本网 AID范围的配置信息, 该漫游地网 络的 ASN才艮据所述本网 AID范围的配置信息区分本网的终端和漫游终端; 在漫游网关上保存有与该漫游网关连接的各网络 AID范围的配置信息, 所述漫游网关根据所述各网络 AID范围的配置信息, 区分不同网络的终端。
10、 一种实现网间漫游的系统, 其特征在于, 该系统应用于身份标识与 位置标识分离的网络中, 在该网络中以接入标识 (AID )作为终端的用户身 份标识, 以路由标识(RID )作为终端的位置标识, 该系统包括: 漫游终端、 目的设备、 漫游地网络的接入服务节点 (ASN )和漫游网关, 其中:
所述漫游终端设置为: 在附着到漫游地网络的 ASN后, 向目的设备发送 首数据包, 该首数据包的目的地址为目的设备的 AID;
所述漫游地网络的 ASN设置为: 在接收到首数据包后, 在本地查询
AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的设备不属于漫 游地网络, 则向漫游网关请求查询目的设备的 RID; 并在接收到漫游网关返 回的目的设备的 RID后, 根据该 RID, 向目的设备发送漫游终端的后续数据 包;
所述漫游网关设置为: 从目的设备的归属网络查询目的设备的 RID, 并 返回给漫游地网络的 ASN。
11、 如权利要求 10所述的系统, 其中, 所述漫游地网络的 ASN是设置 为以如下方式向漫游网关请求查询目的设备的 RID: 将目的设备的 AID发送 给漫游网关, 请求查询目的设备的 RID;
所述漫游网关是设置为:
接收到目的设备的 AID后, 解析该 AID, 获知目的设备的归属网络, 将 目的设备的 AID发送给该目的设备归属网络的映射转发平面, 请求查询目的 设备的 RID;
接收并保存目的设备归属网络的映射转发平面根据目的设备的 AID查询 到到的目的设备的 AID-RID的映射信息, 并转发给漫游地网络的 ASN。
12、 如权利要求 10所述的系统, 其中,
所述漫游终端还设置为: 向漫游地网络的 ASN请求附着, 将漫游终端的
AID发送给该漫游地网络的 ASN;
所述漫游地网络的 ASN还设置为: 根据漫游终端的 AID识别出漫游终 端不属于本地网络, 向漫游网关请求接入; 以及接收漫游网关发送的接入结 果, 并将附着结果通知所述漫游终端;
所述漫游网关还设置为:根据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归属网络的认证中心请求认证; 以及接收所述认证中心发送的认 证结果, 并将接入结果通知漫游地网络的 ASN。
13、 如权利要求 10所述的系统, 其中, 所述漫游地网络的 ASN是设置 为以如下方式根据目的设备的 RID,向目的设备发送漫游终端的后续数据包: 将漫游终端的数据包进行重封装, 釆用目的设备的 RID 和漫游终端的
RID分别作为重封装的数据包的目的地址和源地址,通过与目的 ASN之间的 媒体面通道将该重封装的数据包发送给目的 ASN;
目的 ASN对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
14、 如权利要求 10所述的系统, 其中, 所述漫游地网络的 ASN是设置 为以如下方式根据目的设备的 RID,向目的设备发送漫游终端的后续数据包: 将漫游终端的数据包进行重封装, 釆用目的设备的 RID 和漫游终端的 RID分别作为重封装的数据包的目的地址和源地址, 将该重封装的数据包送 给漫游网关;
漫游网关根据目的设备的 RID, 将该重封装的数据包发送给目的 ASN; 目的 ASN对对接收到的漫游网络中的 ASN重封装的数据包进行解封装, 恢复为漫游终端的数据包, 发送给目的设备。
15、 如权利要求 10所述的系统, 其中,
所述漫游地网络的 ASN还设置为: 在向漫游网关请求查询目的设备的 RID时, 将所述首数据包发送给漫游网关;
所述漫游网关还设置为:从目的设备的归属网络查询目的设备的 RID时, 将所述首数据包发送给目的设备的归属网络;
目的设备的归属网络还设置为: 在查询到目的设备的 RID后, 根据该查 询到的 RID将所述首数据包发送给目的 ASN。
16、 如权利要求 11所述的系统, 其中,
所述漫游地网络的 ASN是设置为通过向漫游网关发送 AID-RID查询消 息, 在该 AID-RID 查询消息中携带目的设备的 AID, 请求查询目的设备的 RID;
所述漫游网关是设置为:
通过向目的设备归属网络的映射转发平面发送 AID-RID请求消息, 在该 AID-RID请求消息中携带目的设备的 AID , 请求查询目的设备的 RID;
接收目的设备归属网络的映射转发平面返回的 AID-RID请求结果消息, 得到目的设备的 AID与 RID的映射信息; 以及
通过向漫游地网络的 ASN发送 AID-RID查询结果消息将目的设备的 AID 与 RID的映射信息发送给漫游地网络的 ASN。
17、 如权利要求 12所述的系统, 其中,
所述漫游终端是设置为以如下方式向漫游地网络的 ASN请求附着,将漫 游终端的 AID发送给该漫游地网络的 ASN:通过发送附着请求消息向漫游地 网络的 ASN请求附着, 在所述附着请求消息中携带漫游终端的 AID;
所述漫游地网络的 ASN是设置为: 通过发送接入请求消息, 向漫游网关 请求接入; 以及通过发送附着响应消息, 将附着结果通知漫游终端
所述漫游网关是设置为: 通过发送认证请求消息, 向漫游终端归属网络 的认证中心请求认证; 接收认证中心发送的认证结果消息; 以及通过发送接 入响应消息, 将接入结果通知漫游地网络的 ASN。
18、 如权利要求 12所述的系统, 其中,
在漫游地网络的 ASN上保存有本网 AID范围的配置信息, 该漫游地网 络的 ASN还设置为根据所述本网 AID范围的配置信息区分本网的终端和漫 游终端;
在漫游网关上保存有与该漫游网关连接的各网络 AID范围的配置信息, 所述漫游网关还设置为根据所述各网络 AID范围的配置信息, 区分不同网络 的终端。
19、 一种实现网间漫游的方法, 其特征在于, 该方法应用于身份标识与 位置标识分离的网络中, 在该网络中以接入标识 (AID )作为终端的用户身 份标识, 以路由标识(RID )作为终端的位置标识, 该方法包括:
漫游终端附着到漫游地网络的 ASN后, 向目的设备发送首数据包, 该首 数据包的目的地址为目的设备的 AID;
所述漫游地网络的 ASN接收到首数据包后, 在漫游地网络的 ASN本地 查询 AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的设备属于 漫游地网络, 则请求本地的映射转发平面查询目的设备的 RID;
本地的映射转发平面查询目的设备的 RID,并返回给漫游地网络的 ASN; 以及
漫游地网络的 ASN根据目的设备的 RID,向目的设备发送漫游终端的后 续数据包。
20、 如权利要求 19所述的方法, 该方法还包括:
所述漫游地网络的 ASN在向本地的映射转发平面请求查询目的设备的 RID时, 还将所述首数据包发送给该映射转发平面;
本地的映射转发平面在查询到目的设备的 RID后, 根据该查询到的 RID 将所述首数据包发送给目的 ASN。
21、 一种实现网间漫游的系统, 其特征在于, 该系统应用于身份标识与 位置标识分离的网络中, 在该网络中以接入标识 (AID )作为终端的用户身 份标识, 以路由标识(RID )作为终端的位置标识, 该系统包括: 漫游终端、 目的设备、 漫游地网络的接入服务节点 (ASN )和本地的映射转发平面, 其 中:
所述漫游终端设置为: 在附着到漫游地网络的 ASN后, 向目的设备发送 首数据包, 该首数据包的目的地址为目的设备的 AID;
所述漫游地网络的 ASN设置为: 在接收到首数据包后, 在漫游地网络的 ASN本地查询 AID-RID的映射信息, 若未查找到目的设备的 RID, 并且目的 设备属于漫游地网络, 则请求本地的映射转发平面查询目的设备的 RID; 并 在接收到本地的映射转发平面返回的目的设备的 RID后, 根据该 RID , 向目 的设备发送漫游终端的后续数据包;
本地的映射转发平面设置为: 查询目的设备的 RID, 并返回给漫游地网 络的 ASN。
22、 如权利要求 21所述的系统, 其中,
所述漫游地网络的 ASN还设置为:在向本地的映射转发平面请求查询目 的设备的 RID时, 将所述首数据包发送给该映射转发平面;
本地的映射转发平面还设置为: 在查询到目的设备的 RID后, 根据该查 询到的 RID将所述首数据包发送给目的 ASN。
23、 一种查询方法, 其特征在于, 该方法应用于身份标识与位置标识分 离的网络中, 在该网络中以接入标识 (AID )作为终端的用户身份标识, 以 路由标识(RID )作为终端的位置标识, 该方法包括:
接入服务节点 (ASN )将设备的 AID发送给漫游网关, 请求查询设备的
RID; 漫游网关接收到设备的 AID后, 解析该 AID, 获知该设备的归属网络, 将该设备的 AID发送给设备归属网络的映射转发平面,请求查询设备的 RID; 以及
设备归属网络的映射转发平面根据设备的 AID查询到对应的 RID后 ,将 设备的 AID-RID的映射信息发送给漫游网关,漫游网关保存后,转发给 ASN。
24、 如权利要求 23所述的方法, 其中,
所述 ASN将设备的 AID发送给漫游网关, 请求查询设备的 RID的步骤 包括: 所述 ASN通过向漫游网关发送 AID-RID查询消息 , 在该 AID-RID查 询消息中携带设备的 AID, 请求查询设备的 RID;
所述漫游网关将该设备的 AID发送给设备归属网络的映射转发平面, 请 求查询设备的 RID的步骤包括: 所述漫游网关通过向设备归属网络的映射转 发平面发送 AID-RID请求消息, 在该 AID-RID请求消息中携带设备的 AID , 请求查询设备的 RID;
所述设备归属网络的映射转发平面将设备的 AID-RID的映射信息发送给 漫游网关的步骤包括: 设备归属网络的映射转发平面通过向漫游网关返回 AID-RID请求结果消息, 将设备的 AID与 RID的映射信息发送给漫游网关; 所述漫游网关将设备的 AID-RID的映射信息转发给 ASN的步骤包括: 漫游网关通过向 ASN发送 AID-RID查询结果消息将设备的 AID与 RID的映 射信息发送给 ASN。
25、 一种查询系统, 其特征在于, 该系统应用于身份标识与位置标识分 离的网络中, 在该网络中以接入标识 (AID )作为终端的用户身份标识, 以 路由标识 (RID )作为终端的位置标识, 包括: 接入服务节点 (ASN ) 、 漫 游网关和设备归属网络的映射转发平面;
所述 ASN设置为:将设备的 AID发送给漫游网关,请求查询设备的 RID; 所述漫游网关设置为: 在接收到设备的 AID后, 解析该 AID, 获知该设 备的归属网络, 将该设备的 AID发送给设备归属网络的映射转发平面, 请求 查询设备的 RID; 并在接收到设备归属网络的映射转发平面返回的 AID-RID 的映射信息后, 进行保存并转发给 ASN;
所述设备归属网络的映射转发平面设置为: 在根据设备的 AID查询到对 应的 RID后, 将设备的 AID-RID的映射信息发送给漫游网关。
26、 如权利要求 25所述的系统, 其中,
所述 ASN是设置为: 通过向漫游网关发送 AID-RID 查询消息, 在该
AID-RID查询消息中携带设备的 AID , 请求查询设备的 RID;
所述漫游网关是设置为: 通过向设备归属网络的映射转发平面发送 AID-RID请求消息, 在该 AID-RID请求消息中携带设备的 AID , 请求查询设 备的 RID;以及通过向 ASN发送 AID-RID查询结果消息将设备的 AID与 RID 的映射信息发送给 ASN
设备归属网络的映射转发平面是设置为: 通过向漫游网关返回 AID-RID 请求结果消息, 将设备的 AID与 RID的映射信息发送给漫游网关。
27、 一种网络附着方法, 其特征在于, 该方法应用于身份标识与位置标 识分离的网络中, 在该网络中以接入标识(AID )作为终端的用户身份标识, 以路由标识(RID )作为终端的位置标识, 该方法包括:
漫游终端向漫游地网络的接入服务节点 (ASN )请求附着, 将漫游终端 的 AID发送给该漫游地网络的 ASN;
漫游地网络的 ASN才艮据漫游终端的 AID识别出漫游终端不属于本地网 络, 向漫游网关请求接入;
漫游网关才艮据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归 属网络的认证中心请求认证;
认证中心对漫游终端进行认证后, 将认证结果通知漫游网关; 以及 漫游网关将接入结果通知漫游地网络的 ASN, 漫游地网络的 ASN将附 着结果通知漫游终端。
28、 如权利要求 27所述的方法, 其中,
所述漫游终端向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送 给该漫游地网络的 ASN的步骤包括:所述漫游终端通过发送附着请求消息向 漫游地网络的 ASN请求附着, 在所述附着请求消息中携带漫游终端的 AID; 所述漫游地网络的 ASN向漫游网关请求接入的步骤包括:所述漫游地网 络的 ASN通过发送接入请求消息, 向漫游网关请求接入;
所述漫游网关向漫游终端归属网络的认证中心请求认证的步骤包括: 漫 游网关通过发送认证请求消息, 向漫游终端归属网络的认证中心请求认证; 所述认证中心将认证结果通知漫游网关的步骤包括: 认证中心通过发送 认证结果消息, 将认证结果通知漫游网关;
所述漫游网关将接入结果通知漫游地网络的 ASN的步骤包括:漫游网关 通过发送接入响应消息, 将接入结果通知漫游地网络的 ASN;
所述漫游地网络的 ASN将附着结果通知漫游终端的步骤包括:漫游地网 络的 ASN通过发送附着响应消息, 将附着结果通知漫游终端。
29、 一种网络附着系统, 其特征在于, 该系统应用于身份标识与位置标 识分离的网络中, 在该网络中以接入标识(AID )作为终端的用户身份标识, 以路由标识 (RID )作为终端的位置标识, 该系统包括: 漫游终端、 漫游地 网络的 ASN、 漫游网关和漫游终端归属网络的认证中心;
所述漫游终端设置为: 向漫游地网络的 ASN请求附着, 将漫游终端的 AID发送给该漫游地网络的 ASN;
所述漫游地网络的 ASN设置为: 根据漫游终端的 AID识别出漫游终端 不属于本地网络, 向漫游网关请求接入; 并在接收到漫游网关返回的接入结 果后, 通知漫游终端附着结果;
所述漫游网关设置为: 根据漫游终端的 AID查找漫游终端的归属网络, 向漫游终端归属网络的认证中心请求认证; 并在接收到漫游终端归属网络的 认证中心返回的认证结果后, 通知漫游地网络的 ASN接入结果;
所述漫游终端归属网络的认证中心设置为: 对漫游终端进行认证后, 将 认证结果通知漫游网关。
30、 如权利要求 29所述的系统, 其中, 所述漫游终端是设置为:通过发送附着请求消息向漫游地网络的 ASN请 求附着, 在所述附着请求消息中携带漫游终端的 AID;
漫游地网络的 ASN是设置为: 通过发送接入请求消息, 向漫游网关请求 接入; 以及通过发送附着响应消息, 将附着结果通知漫游终端
漫游网关是设置为: 通过发送认证请求消息, 向漫游终端归属网络的认 证中心请求认证; 以及通过发送接入响应消息, 将接入结果通知漫游地网络 的 ASN;
认证中心是设置为: 通过发送认证结果消息, 将认证结果通知漫游网关。
PCT/CN2010/076204 2009-09-25 2010-08-20 实现网间漫游的方法、系统及查询和网络附着方法及系统 WO2011035667A1 (zh)

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