CN103024865B - A kind of core network access and network side initiate the method and system of attachment removal - Google Patents
A kind of core network access and network side initiate the method and system of attachment removal Download PDFInfo
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- CN103024865B CN103024865B CN201110285539.2A CN201110285539A CN103024865B CN 103024865 B CN103024865 B CN 103024865B CN 201110285539 A CN201110285539 A CN 201110285539A CN 103024865 B CN103024865 B CN 103024865B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/16—Implementing security features at a particular protocol layer
- H04L63/162—Implementing security features at a particular protocol layer at the data link layer
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- 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
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/06—De-registration or detaching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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Abstract
The present invention discloses the method that a kind of core network access and network side initiate attachment removal, during core network access, after non-3 GPP access network (TNAN) network element trusty receives expansible authentication protocol (EAP) certification success message, initiate to establish session request to core net, Internet protocol (IP) instruction of address is not distributed wherein carrying；After conversational response is established in core net return, user equipment (UE) sends IP address request message, to core network requests IP address, completes core network access；During attachment removal, after TNAN network elements receive attachment removal instruction, or configured according to local management, initiate to delete session to core net, core net initiates DHCP to UE forces to renew；UE returns to negative confirmation to core network requests IP address, core net again.The invention also discloses corresponding system so that need not newly add message to realize the triggering of access, can be good at compatible existing network protocol, and specification initiates from network side the flow of attachment removal.
Description
Technical field
The present invention relates to communications field network access technique, particularly relates to a kind of core network access and network side and initiates to go
The method and system of attachment.
Background technology
The evolution packet of third generation partner program (3rd Generation Partnership Project, 3GPP)
System (Evolved Packet System, EPS) by evolution Universal Terrestrial Radio Access Network (Evolved Universal
Terrestrial Radio Access Network, E-UTRAN), mobile management unit (Mobility Management
Entity, MME), gateway (Serving Gateway, S-GW), "Policy and Charging Rules Function entity (Policy and
Charging Rules Function, PCRF) grouped data network gateway (Packet Data Network Gateway, P-
GW), home subscriber server (Home Subscriber Server, HSS) and verification, mandate and accounting server
(Authentication Authorization and Accounting, AAA) is formed.
EPS can carry out intercommunication with non-3 GPP system in actually arranging net, Fig. 1 for EPS networks in the prior art with it is non-
The network structure of 3GPP network interworkings, as shown in Figure 1, wherein, the intercommunication of EPS and non-3 GPP system passes through S2a/b/c interfaces
Realize, P-GW is as the anchor point between EPS and non-3 GPP system.It is non-in EPS and the system architecture diagram of non-3 GPP system intercommunication
3GPP system access is divided into trustless non-3 GPP access and trusted non-3 GPP access two parts；Wherein, it is trustless non-
The packet data gateway (Evolved Packet Data Gateway, ePDG) that 3GPP accesses need to be Jing Guo evolution is connected with P-GW,
Interface between ePDG and P-GW is S2b；Trusted non-3 GPP access can be directly connected by S2a interfaces with P-GW, and S2a interfaces are adopted
Information exchange is carried out with proxy-mobile IP (PMIP) agreement；In addition, S2c interfaces provide user equipment (User Equipment,
UE) control between P-GW and mobility support, its mobility management protocol supported are the mobile IP v 6 for supporting double stacks
(Moblie IPv6 Support for Dual Stack Hosts and Routers, DSMIPv6), available for trustless
Non-3 gpp and trusted non-3 GPP access.
Wireless LAN (Wireless Local Area Network, WLAN) can also be used as non-3 gpp system
System access EPS, this is related to the interconnection and interflow problem of the fixed network mobile fusion of many operator's concerns.At present, for S2b, S2c
The research of the flow of interface and tactful intercommunication is very much, and the research for S2a interfaces is seldom.
Fig. 2 is the flow diagram that UE accesses EPS by WLAN trusty in the prior art, as shown in Fig. 2, the stream
Journey includes：
Step 201, UE performs the distinctive flow of non-3 GPP access；
Step 202, UE perform expansible authentication protocol (Extensible Authentication Protocol,
EAP) identifying procedure；
Step 203, UE and non-3 GPP access network trusty (trusted non-3GPP IP access network,
TNAN three layers of (Layer 3, L3) message) are performed between network element, connection is established in triggering；
Step 204- steps 207, after TNAN receives L3 message, tunnel building is initiated to the P-GW of mobile core network
Flow, establishment of connection is completed by the interaction with EPS networks.
Wherein, L3 message can establish a kind of mode in tunnel as triggering TNAN and P-GW, still, in existing protocol simultaneously
Not yet explicitly provide this message.Meanwhile after being established for connection, the attachment removal flow prior art of UE is not also advised clearly
It is fixed.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of core network access and network side to initiate attachment removal
Method and system, is specified specification user equipment by trusted non-3 GPP system, is touched using two layers of (Layer 2, L2) message
Hair establishes the flow of connection, and the flow of attachment removal is initiated from network side.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The present invention provides a kind of method of core network access, the described method includes：
After TNAN network elements receive EAP authentication success message, initiate to establish session request to core net, do not distributed wherein carrying
The instruction of Internet protocol (IP) address；
After conversational response is established in core net return, UE, to core network requests IP address, is completed by IP address request message
Core network access.
Wherein, it is described to initiate to establish session request to core net, be specially：The TNAN network elements successfully disappear from EAP authentication
In breath, public data network (PDN) type of UE signings is obtained, the PDN types that the UE contracts are carried and are sent out in request message
Give the P-GW of core net.
Wherein, the PDN types of the UE signings, including：Internet Protocol version 4 (IPv4), and/or sixth version interconnection
FidonetFido (IPv6)；
The IP address request message, including：Broadcast route request message, DHCP have found message；
The UE sends IP address request message, to core network requests IP address, is specially：When UE needs to establish IPv4 companies
When connecing, by the DHCP discovery message P-GW that is transmitted to core net by possessing the TNAN network elements of dhcp relay feature；When UE needs
When establishing IPv6 connections, timing sends broadcast route request message.
Wherein, the completion core network access, is specially：The PDN types that the P-GW of core net is asked according to UE, distribute phase
The IP address answered；It is specifically included：When P-GW receives broadcast route request message, it is believed that its PDN type asked is IPv6；
When P-GW, which receives DHCP, finds message, it is believed that its PDN type asked is IPv4；If P-GW judges the PDN classes of UE requests
When type and the IP address Type-Inconsistencies of the signing locally preserved, then P-GW is returned to UE and unsuccessfully indicated.
Wherein, it is described to establish session request, including：The establishment conversation request message of GPRS Tunnel Protocol (GTP) or
PMIP agreements act on behalf of bearing update message.
Present invention also offers a kind of network side initiate attachment removal method, the described method includes：
After TNAN network elements receive attachment removal instruction, or configured according to local management, initiate to delete session, core to core net
Heart net initiates DHCP to UE to be forced to renew, it is desirable to which UE is again to core network requests IP address；
UE returns to negative confirmation to core network requests IP address, core net again.
Wherein, after the TNAN network elements receive attachment removal instruction, or configured according to local management, initiate to delete to core net
Except session, it is specially：When the signing information of UE is deleted or is required re-authentication or is required to re-authenticate, ownership is used
Family server/verification, mandate and accounting server (HSS/AAA) send attachment removal instruction to TNAN network elements；TNAN network elements receive
After attachment removal instruction, or configured according to local management, sent to the P-GW of core net and delete session request.
Wherein, the UE returns to negative confirmation to core network requests IP address, core net again, is specially：UE is received
DHCP is forced after renewing, and DHCP request message is initiated to the P-GW of core net by possessing the TNAN network elements of dhcp relay feature,
P-GW returns to negative confirmation to UE；UE initiates DHCP to the P-GW of core net and finds message, and P-GW returns to negative confirmation to UE.
Present invention also offers a kind of system of core network access, the system comprises：TNAN network elements, core net and UE；
Wherein,
The TNAN network elements, after receiving EAP authentication success message, initiate to establish session request to core net, wherein
Carry the instruction for not distributing IP address；
The UE, please to core net for after core net returns and establishes the response of session, sending IP address request message
IP address is sought, completes core network access.
Wherein, the TNAN network elements initiate to establish session request to core net, are specially：The TNAN network elements are recognized from EAP
Demonstrate,prove in success message, obtain the PDN types of UE signings, the PDN types that the UE contracts are carried and are sent in request message
The P-GW of core net.
Wherein, the PDN types of the UE signings, including：IPv4, and/or IPv6；
The IP address request message, including：Broadcast route request message, DHCP have found message；
The UE sends IP address request message, to core network requests IP address, is specially：When UE needs to establish IPv4 companies
When connecing, by the DHCP discovery message P-GW that is transmitted to core net by possessing the TNAN network elements of dhcp relay feature；When UE needs
When establishing IPv6 connections, timing sends broadcast route request message.
Wherein, the completion core network access, is specially：The PDN types that the P-GW of core net is asked according to UE, distribute phase
The IP address answered；It is specifically included：When P-GW receives broadcast route request message, it is believed that its PDN type asked is IPv6；
When P-GW, which receives DHCP, finds message, it is believed that its PDN type asked is IPv4；If P-GW judges the PDN classes of UE requests
When type and the IP address Type-Inconsistencies of the signing locally preserved, then P-GW is returned to UE and unsuccessfully indicated.
Present invention also offers a kind of network side initiate attachment removal system, the system comprises：TNAN network elements, core net
And UE；Wherein,
The TNAN network elements, configure after receiving attachment removal instruction, or according to local management, initiate to delete to core net
Except session；
The core net, after the attachment removal for receiving the initiation of TNAN network elements, initiates DHCP to UE and forces to renew, to require
To core network requests IP address, negative confirmation is returned after receiving UE re-request IP address again by UE；
The UE, for again to core network requests IP address.
Wherein, after the TNAN network elements receive attachment removal instruction, or configured according to local management, initiate to delete to core net
Except session, it is specially：When the signing information of UE is deleted or is required re-authentication or is required to re-authenticate, HSS/
AAA sends attachment removal instruction to TNAN network elements；After TNAN network elements receive attachment removal instruction, or configured according to local management, to
The P-GW of core net, which is sent, deletes session request.
Wherein, the UE returns to negative confirmation to core network requests IP address, core net again, is specially：UE is received
DHCP is forced after renewing, and DHCP request message is initiated to the P-GW of core net by possessing the TNAN network elements of dhcp relay feature,
P-GW returns to negative confirmation to UE；UE initiates DHCP to the P-GW of core net and finds message, and P-GW returns to negative confirmation to UE.
Core network access and network side provided by the present invention initiate the method and system of attachment removal, core network access
During, after TNAN network elements receive EAP authentication success message, initiate to establish session request to core net, do not distributed wherein carrying
The instruction of IP address；After conversational response is established in core net return, UE sends IP address request message, to core network requests IP
Location, completes core network access.During network side initiates attachment removal, after TNAN network elements receive attachment removal instruction, or according to
Local management is configured initiates to delete session to core net, and core net initiates dynamic host configuration protocol (Dynamic Host to UE
Configuration Protocol, DHCP) force to renew, it is desirable to UE is again to core network requests IP address；UE is again to core
Heart net IP address requesting, core net return to negative confirmation.During core network access, by L2 message, i.e. EAP authentication message
Trigger P-GW from TNAN network elements to mobile core network initiate session establishment, need not newly be added in existing procedure L3 message or
Other L2 message can be good at compatible existing network protocol to realize the triggering of access, and specification is initiated from network side
The flow of attachment removal.
Brief description of the drawings
Fig. 1 is EPS networks in the prior art and the network structure of non-3 GPP network intercommunication；
Fig. 2 is the flow diagram that UE accesses EPS by WLAN trusty in the prior art；
Fig. 3 is a kind of method flow schematic diagram of core network access of the present invention；
Fig. 4 is the method flow schematic diagram that a kind of network side of the present invention initiates attachment removal；
Fig. 5 is the flow diagram of the embodiment one of core network access of the present invention；
Fig. 6 is the flow diagram of the embodiment two of core network access of the present invention；
Fig. 7 is the embodiment flow diagram that attachment removal is initiated in inventive network side；
Fig. 8 is a kind of system structure diagram of core network access of the present invention；
Fig. 9 is the system structure diagram that a kind of network side of the present invention initiates attachment removal.
Embodiment
The present invention basic thought be：During core network access, after TNAN network elements receive EAP authentication success message,
Initiate to establish session request to core net, wherein carrying the instruction for not distributing IP address；After conversational response is established in core net return,
UE sends IP address request message, to core network requests IP address, completes core network access.Network side initiates the process of attachment removal
In, after TNAN network elements receive attachment removal instruction, or configured according to local management, initiate to delete session, core net to core net
DHCP is initiated to UE to force to renew；UE returns to negative confirmation to core network requests IP address, core net again.
The technical solution of the present invention is further elaborated with reference to the accompanying drawings and examples.
Fig. 3 is a kind of method flow schematic diagram of core network access of the present invention, as shown in figure 3, the method specifically includes
Following steps：
Step 301, after TNAN network elements receive EAP authentication success message, initiate to establish session request to core net, wherein taking
Band does not distribute the instruction of IP address；
Specifically, described initiate to establish session request to core net, it is specially：The TNAN network elements are successful from EAP authentication
In message, public data network (Public Data Network, PDN) type of UE signings, the PDN that the UE is contracted are obtained
Type carries the P-GW that core net is sent in request message.The PDN types of the UE signings, including：Fourth edition internet
Agreement (IPv4), and/or Internet Protocol version 6 (IPv6).It is described to establish conversation request message, including：GPRS Tunnel Protocol
The establishment conversation request message of (GPRS Tunnelling Protocol, GTP) or the bearer update of acting on behalf of of PMIP agreements disappear
Breath.The TNAN network elements, including：Wireless controller (AC) or wideband network gateway control device (BNG).
Further, before step 301, the method further includes：UE performs the EAP accesses based on 3GPP and authorizes.
Further, after step 301, the P-GW of core net completes IP connected reference networks (IP-Connectivity
Access Network, IP-CAN) session establishment and renewal P-GW addresses flow, complete backward UE and return to establish session sound
Should.
Step 302, after conversational response is established in core net return, UE sends IP address request message, to core network requests IP
Address, completes core network access.
Specifically, the IP address request message, including：Broadcast route request message, DHCP have found message.The UE hairs
IP address request message is sent, to core network requests IP address, is specially：When UE needs to establish IPv4 connections, DHCP is had found
The P-GW that message is transmitted to core net by possessing the TNAN network elements of dhcp relay feature；When UE needs to establish IPv6 connections,
Timing sends broadcast route request message.Wherein, it is local when TNAN network elements receive broadcast route request or advertising of route message
After processing, new broadcast route request or advertising of route message are generated, is sent to next processing net element.Need what is illustrated
It is that TNAN network elements are at this time not as relaying, to forward route requests or advertising of route message.
The completion core network access, including：The PDN types that P-GW is asked according to UE, distribute corresponding IP address, specifically
Including：When P-GW receives broadcast route request message, it is believed that its PDN type asked is IPv6；When P-GW receives DHCP hairs
During existing message, it is believed that its PDN type asked is IPv4；If the label that P-GW judges the PDN types of UE requests and locally preserves
During IP address Type-Inconsistencies about, then P-GW is returned to UE and unsuccessfully indicated.Further, after P-GW distributes IP, by IP address
Return to UE.
Fig. 4 is the method flow schematic diagram that a kind of network side of the present invention initiates attachment removal, as shown in figure 4, the method has
Body comprises the following steps：
Step 401, after TNAN network elements receive attachment removal instruction, or configured according to local management, initiate to delete to core net
Except session, core net initiates DHCP to UE forces to renew, it is desirable to which UE is again to core network requests IP address；
Specifically, after the TNAN network elements receive attachment removal instruction, or configured according to local management, initiated to core net
Session is deleted, is specially：When the signing information of UE is deleted or is required re-authentication or is required to re-authenticate, HSS/
AAA sends attachment removal instruction to TNAN network elements；After TNAN network elements receive attachment removal instruction, or configured according to local management, to
The P-GW of core net, which is sent, deletes session request.Wherein, the TNAN network elements support dhcp relay feature.The deletion session please
Ask, including：What GTP deleted session request or PMIP agreements acts on behalf of bearing update message.
Step 402, UE returns to negative confirmation to core network requests IP address, core net again.
Specifically, the UE returns to negative confirmation to core network requests IP address, core net again, it is specially：UE is received
DHCP is forced after renewing, and DHCP request message is initiated to the P-GW of core net by possessing the TNAN network elements of dhcp relay feature,
P-GW returns to negative confirmation to UE；UE initiates DHCP to the P-GW of core net and finds message, and P-GW returns to negative confirmation to UE.Tool
In body application, the IP address option carried in the DHCP negative acknowledgement messages that P-GW is returned is 0.Therefore, UE be with can not obtaining IP
Location and then discharge relevant resource information and realize attachment removal.
The cut-in method and de-adherence method of the present invention are described in detail below by specific embodiment.
Fig. 5 is the flow diagram of the embodiment one of core network access of the present invention, as shown in figure 5, in the embodiment, mainly
On the premise of being description UE signing two kinds of address styles of IPv4 and IPv6, during session establishment, P-GW is according to TNAN nets
The instruction of member, does not distribute IP address for UE；Then UE sends IP address request message and directly asks and obtain corresponding to P-GW
IP address.For IPv4 connection modes, P-GW supports the function of Dynamic Host Configuration Protocol server.The flow includes：
Step 501, UE performs the distinctive flow of non-3 gpp with TNAN network elements；
Step 502-503, UE perform the EAP access authentications based on 3GPP, and TNAN network elements receive the certification of HSS/AAA returns
After successful message, for TNAN network elements from the message, the PDN types for obtaining UE signings are IPv4 and IPv6, then, can be to P-
GW initiates to create the request message of session, the PDN types of UE signings is carried in message, while also carry one and do not distribute IP address
Instruction, the instruction are that notice P-GW need not be that UE distributes IP address；
Step 504-505, P-GW complete IP-CAN session establishments and update the flow of P-GW addresses；
Step 506, P-GW is received create conversation request message after, local PDN types for preserving UE signings, and to TNAN nets
Member, which is sent, creates conversational response, according to the instruction carried in establishment conversation request message, is not taken in conversational response message is created
IP address with UE.
Step 507-511, when UE needs to establish IPv4 connections, sends DHCPv4 to TNAN network elements and finds message, TNAN
After network element receives the message, as DHCP relay, P-GW is forwarded the message to, P-GW, can be according to DHCP as Dynamic Host Configuration Protocol server
Message implies the information for supporting IPv4, distributes IPv4 addresses for UE, and return to UE by DHCP confirmation messages；
Step 512-515, when UE needs to establish IPv6 connections, UE can periodically send broadcast route request message, TNAN
After network element receives the message, the information for supporting IPv6 can be implied according to route request information, advertising of route message is sent to UE, disappears
IPv6 addresses are carried in breath.
Wherein, when TNAN network elements receive route requests or advertising of route message, after processing locality, new route is generated
Request or advertising of route message, are sent to next processing net element.It is emphasized that TNAN network elements turn not as relaying
Send out route requests or advertising of route message.It is further to note that step 507-511 and step 512-515 are on stream
And there is no fixed sequencing.
Fig. 6 is the flow diagram of the embodiment two of core network access of the present invention, as shown in fig. 6, in the embodiment, mainly
It is that UE asks the IP classes that another is not supported on the premise of describing one kind that UE only contracts in IPv4 or IPv6 address styles
During the address of type, the flow of P-GW processing.The flow includes：
Step 601-606, identical with step 501-506, difference lies in the PDN types of UE signings are with embodiment one
One kind in IPv4 and IPv6；
Step 607-608, when UE needs to establish IPv4 connections, sends DHCPv4 to TNAN network elements and finds message, TNAN
After network element receives the message, as DHCP relay, P-GW is forwarded the message to；
Step 609-611, since the PDN types of UE signings are IPv6, but the PDN types of UE requests are IPv4, because herein
Reason process is specially：P-GW after receiving DHCPv4 discovery message, can imply support as Dynamic Host Configuration Protocol server according to dhcp message
The information of IPv4, and the PDN types of the UE signings locally preserved compare, and discovery is inconsistent, then it is no to return to DHCP to UE by P-GW
Determine confirmation message, the IP address carried in message is zero.
Step 612-615, when the PDN types of UE signings be IPv4, but the PDN types of UE requests are IPv6, therefore processing
Process is specially：If TNAN network elements receive the broadcast route request message that UE timings are sent, after receiving the message, and newly-built one
A route request information is sent to P-GW, and P-GW can imply the information for supporting IPv6, and local preservation according to route request information
UE signing PDN types compare, find it is inconsistent, then P-GW can give UE return advertising of route message, wherein carry instruction say
The bright distribution for not supporting IPv6 addresses.
Specifically, needing instruction explanation not support the distribution of IPv6 addresses in the advertising of route message, this is needed existing
The instruction is extended in some advertising of route message, or increases the definition of particular value in existing message parameter, to imply
The bright distribution for not supporting IPv6.
Fig. 7 is the embodiment flow diagram that attachment removal is initiated in inventive network side, as shown in fig. 7, in the embodiment, it is main
If the attachment removal flow that network side is initiated is described, including：HSS/AAA is initiated, or TNAN network elements are sent out as Dynamic Host Configuration Protocol server
Rise, the flow includes：
Step 701, since the signing information of user is deleted or requires the reasons such as user's re-authentication/mandate, HSS/
AAA can send attachment removal instruction message to TNAN network elements；
Step 702, when TNAN network elements receive attachment removal instruction message, or due to local management configuration reason, it is necessary to strong
The attachment removal processed UE, or go to connect a PDN connection of the UE, it is also possible to initiate gateway control session to PCRF and terminate stream
Journey；
Specifically, the local management configuration reason is for example：Manager is because of maintained equipment or other reasons, it is necessary to strong
The attachment removal processed UE.
Step 703, TNAN network elements initiate to delete conversation request message to P-GW；
Step 704, P-GW after deletion conversation request message is received, initiates DHCP to UE and forces as Dynamic Host Configuration Protocol server
Renew message, it is desirable to which UE is again to Dynamic Host Configuration Protocol server IP address requesting；
Wherein, TNAN network elements are as DHCP relay, the dhcp message being responsible between forwarding UE and P-GW.
Step 705-706, UE receive DHCP and force after renewing message, can initiate DHCP request to P-GW by TNAN network elements
Message, after applying for that IP address, P-GW receive DHCP request message again, it will not redistribute IP address to UE, then return
DHCP negative confirmation；
Further, in attachment removal flow, if if having been set up multiple PDN connections, then going connection every
, it is necessary to repeat step 704-706 during a PDN connections.
Step 707-711：After UE receives the message of DHCP negative confirmation, sent again through TNAN network elements to P-GW
DHCP has found message, into normal dhcp address distribution request flow.But TNAN network elements will not distribute IP address to UE,
Therefore it is 0 that the IP address option carried in message is provided in DHCP, and in follow-up DHCP negative acknowledgement messages, the IP of carrying
Address option is 0.Therefore, UE can not obtain IP address and discharge relevant resource information.
Step 712, P-GW initiates to delete conversational response message to TNAN network elements；
Step 713, TNAN network elements send attachment removal confirmation message to HSS/AAA.
It is further to note that step 702 and step 703 are on stream and there is no fixed sequencing.More than
Specific embodiment, what is established between TNAN network elements and P-GW is GTP tunnel, it is suitable for the foundation in PMIP tunnels,
Corresponding message is replaced, such as：Act on behalf of bearing update message and replace establishment/renewal/deletion conversation request message, Dai Licheng
Carry confirmation message and replace establishment/renewal/deletion conversational response message, furthermore, it is desirable to which increased parameter is applied equally to PMIP
Message.
For the present invention mainly with DHCPv4 flows come what is described, this triggering mode is equally applicable to DHCPv6, distinguishes
Definition with the specific message definition and DHCPv4 of DHCPv6 is had any different, and can carry out corresponding message replacement.
In addition, heretofore described TNAN network elements from the IPv6 addresses that P-GW is obtained in practical applications, it is understood that
IPv6 address prefixes, equally, UE is from the IPv6 addresses that TNAN network elements obtain it should also be appreciated that being IPv6 address prefixes.
Corresponding preceding method is present invention also offers corresponding system, and details are as follows：
Fig. 8 is a kind of system structure diagram of core network access of the present invention, as shown in figure 8, the system comprises：TNAN
Network element 81, core net 82 and UE83；Wherein,
The TNAN network elements 81, after receiving EAP authentication success message, initiate to establish session request to core net 82,
Wherein carry the instruction for not distributing IP address；
Specifically, the TNAN network elements 81 initiate to establish session request to core net 82, it is specially：The TNAN network elements 81
From EAP authentication success message, the PDN types of UE83 signings are obtained, the PDN types that the UE83 contracts are carried and are disappeared in request
The P-GW of core net 82 is sent in breath.The PDN types of the UE83 signings, including：IPv4, and/or IPv6.The foundation meeting
Words request, including：The establishment conversation request message of GTP or PMIP agreements act on behalf of bearing update message.The TNAN network elements
81, including：Wireless controller (AC) or wideband network gateway control device (BNG).
The UE83, for after core net 82 returns and establishes the response of session, IP address request message being sent, to core
82 IP address requesting of net, completes core network access 82.
Specifically, the IP address request message, including：Broadcast route request message, DHCP have found message.The UE83
IP address request message is sent, to 82 IP address requesting of core net, is specially：, will when UE83 needs to establish IPv4 connections
DHCP has found the P-GW that message is transmitted to core net 82 by possessing the TNAN network elements 81 of dhcp relay feature；When UE83 needs to build
During vertical IPv6 connections, timing sends broadcast route request message.Wherein, TNAN network elements 81 receive broadcast route request or route
During notice message, after processing locality, new broadcast route request or advertising of route message are generated, is sent to next processing net
Member.It should be noted that TNAN network elements 81 are at this time not as relaying, to forward route requests or advertising of route message.
The completion core network access 82, including：The PDN types that the P-GW of core net 82 is asked according to UE83, distribute phase
The IP address answered, specifically includes：When P-GW receives broadcast route request message, it is believed that its PDN type asked is IPv6；When
When P-GW receives DHCP discovery message, it is believed that its PDN type asked is IPv4；If P-GW judges the PDN types of UE requests
With locally preserve signing IP address Type-Inconsistencies when, then P-GW to UE83 return unsuccessfully indicate.Further, P-GW is distributed
After IP, IP address is returned into UE83.
Further, the UE83, is additionally operable to before TNAN network elements 81 receive EAP authentication success message, execution is based on
The EAP access authentications of 3GPP.
Further, the core net 82, be additionally operable to TNAN network elements 81 to core net 82 initiate establish session request it
Afterwards, the P-GW of core net 82 completes IP connected references network (IP-Connectivity Access Network, IP-CAN) meeting
Words are established and the flow of renewal P-GW addresses, complete backward UE83 returns and establish conversational response.
Fig. 9 is the system structure diagram that a kind of network side of the present invention initiates attachment removal, as shown in figure 9, the system bag
Include：TNAN network elements 91, core net 92 and UE93；Wherein,
The TNAN network elements 91, configure after receiving attachment removal instruction, or according to local management, are sent out to core net 92
Play attachment removal；
Specifically, after the TNAN network elements 91 receive attachment removal instruction, or configured according to local management, to core net 92
Attachment removal is initiated, is specially：When the signing information of UE93 is deleted or is required re-authentication or is required to re-authenticate,
HSS/AAA sends attachment removal instruction to TNAN network elements 91；After TNAN network elements 91 receive attachment removal instruction, or according to local management
Configuration, sends to the P-GW of core net 92 and deletes session request.Wherein, the TNAN network elements 91 support dhcp relay feature.Institute
Deletion session request is stated, including：The deletion conversation request message of GTP or PMIP agreements.
The core net 92, after the attachment removal for receiving the initiation of TNAN network elements, initiates DHCP to UE93 and forces to renew,
Ask UE that to core network requests IP address, negative confirmation is returned after receiving UE93 re-request IP address again；
In concrete application, the IP address option carried in the DHCP negative acknowledgement messages of the P-GW returns of core net 92 is 0.
Therefore, UE93, which can not obtain IP address and then discharge relevant resource information, realizes attachment removal.
The UE93, for again to 92 IP address requesting of core net.
Specifically, the UE93 is specially again to 92 IP address requesting of core net：UE93 receives DHCP and forces to renew
Afterwards, by possessing the TNAN network elements 91 of dhcp relay feature DHCP request message is initiated to the P-GW of core net 92；UE is to core
The P-GW of net initiates DHCP and finds message, and P-GW returns to negative confirmation to UE.
Explanation is needed further exist for, heretofore described TNAN network elements are from the IPv6 addresses that P-GW is obtained in practical application
In, it is understood that IPv6 address prefixes, equally, UE is from the IPv6 addresses that TNAN network elements obtain it should also be appreciated that being IPv6 addresses
Prefix.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (15)
- A kind of 1. method of core network access, it is characterised in that the described method includes：After non-3 GPP access network (TNAN) network element trusty receives expansible authentication protocol (EAP) certification success message, to Core net is initiated to establish session request, and Internet protocol (IP) instruction of address is not distributed wherein carrying；Core net returns establish conversational response after, user equipment (UE) is by IP address request message, to core network requests IP Location, completes core network access；After core net receives the attachment removal of TNAN network elements initiation, initiate DHCP to UE and force to renew, it is desirable to which UE is again to core net IP address requesting.
- 2. according to the method described in claim 1, it is characterized in that, described initiate to establish session request to core net, specially： The TNAN network elements obtain public data network (PDN) type of UE signings, the UE are contracted from EAP authentication success message PDN types carry the P-GW of core net be sent in request message.
- 3. method according to claim 1 or 2, it is characterised in that the PDN types of the UE signings, including：Fourth edition is mutual Networking protocol (IPv4), and/or Internet Protocol version 6 (IPv6)；The IP address request message, including：Broadcast route request message, dynamic host configuration protocol (DHCP) find message；The UE sends IP address request message, to core network requests IP address, is specially：When UE needs to establish IPv4 connections When, by the DHCP discovery message P-GW that is transmitted to core net by possessing the TNAN network elements of dhcp relay feature；When UE needs to build During vertical IPv6 connections, timing sends broadcast route request message.
- 4. according to the method described in claim 3, it is characterized in that, the completion core network access, is specially：The P- of core net The PDN types that GW is asked according to UE, distribute corresponding IP address；It is specifically included：When P-GW receives broadcast route request message When, it is believed that its PDN type asked is IPv6；When P-GW receive DHCP find message when, it is believed that its ask PDN types be IPv4；If P-GW judges the PDN types and the IP address Type-Inconsistencies of the signing locally preserved of UE requests, P-GW Return to UE and unsuccessfully indicate.
- 5. method according to claim 1 or 2, it is characterised in that it is described to establish session request, including：Assist in GPRS tunnels The establishment conversation request message or PMIP agreements for discussing (GTP) act on behalf of bearing update message.
- 6. according to the method described in claim 1, it is characterized in that, the method further includes：After TNAN network elements receive attachment removal instruction, or configured according to local management, initiate to delete session to core net；UE returns to negative confirmation to core network requests IP address, core net again.
- 7. according to the method described in claim 6, it is characterized in that, the TNAN network elements receive attachment removal instruction after, Huo Zhegen Configured according to local management, initiate to delete session to core net, be specially：When the signing information of UE is deleted or is required again Certification or when being required to re-authenticate, home subscriber server/verification, mandate and accounting server (HSS/AAA) are to TNAN nets Member sends attachment removal instruction；After TNAN network elements receive attachment removal instruction, or configured according to local management, to the P-GW of core net Send and delete session request.
- 8. the method according to claim 6 or 7, it is characterised in that the UE is again to core network requests IP address, core Net returns to negative confirmation, is specially：UE receives DHCP and forces after renewing, by possessing the TNAN network elements of dhcp relay feature to core The P-GW of heart net initiates DHCP request message, and P-GW returns to negative confirmation to UE；UE initiates DHCP to the P-GW of core net and finds Message, P-GW return to negative confirmation to UE.
- A kind of 9. system of core network access, it is characterised in that the system comprises：TNAN network elements, core net and UE；Wherein,The TNAN network elements, after receiving EAP authentication success message, initiate to establish session request, wherein carrying to core net The instruction of IP address is not distributed；The UE, for after core net returns and establishes the response of session, IP address request message being sent, to core network requests IP Address, completes core network access；The core net, for after the attachment removal of TNAN network elements initiation is received, initiating DHCP to UE and forcing to renew, it is desirable to UE weights Newly to core network requests IP address.
- 10. system according to claim 9, it is characterised in that the TNAN network elements establish session to core net initiation please Ask, be specially：The TNAN network elements obtain the PDN types of UE signings, the UE are contracted from EAP authentication success message PDN types carry the P-GW that core net is sent in request message.
- 11. the system according to claim 9 or 10, it is characterised in that the PDN types of the UE signings, including：IPv4, And/or IPv6；The IP address request message, including：Broadcast route request message, DHCP have found message；The UE sends IP address request message, to core network requests IP address, is specially：When UE needs to establish IPv4 connections When, by the DHCP discovery message P-GW that is transmitted to core net by possessing the TNAN network elements of dhcp relay feature；When UE needs to build During vertical IPv6 connections, timing sends broadcast route request message.
- 12. the system according to claim 9 or 10, it is characterised in that the completion core network access, is specially：Core The PDN types that the P-GW of net is asked according to UE, distribute corresponding IP address；It is specifically included：Asked when P-GW receives broadcast When seeking message, it is believed that its PDN type asked is IPv6；When P-GW, which receives DHCP, finds message, it is believed that its PDN class asked Type is IPv4；If P-GW judges the PDN types and the IP address Type-Inconsistencies of the signing locally preserved of UE requests, P- GW is returned to UE and unsuccessfully indicated.
- 13. system according to claim 9, it is characterised in thatThe TNAN network elements, configure after receiving attachment removal instruction, or according to local management, initiate to delete meeting to core net Words；The core net, for returning to negative confirmation after receiving UE re-request IP address；The UE, for again to core network requests IP address.
- 14. system according to claim 13, it is characterised in that after the TNAN network elements receive attachment removal instruction, or Configured according to local management, initiate to delete session to core net, be specially：When the signing information of UE is deleted or is required weight New certification or when being required to re-authenticate, HSS/AAA sends attachment removal instruction to TNAN network elements；TNAN network elements receive attachment removal After instruction, or configured according to local management, sent to the P-GW of core net and delete session request.
- 15. the system according to claim 13 or 14, it is characterised in that the UE again to core network requests IP address, Core net returns to negative confirmation, is specially：UE receives DHCP and forces after renewing, by possessing the TNAN network elements of dhcp relay feature DHCP request message is initiated to the P-GW of core net, P-GW returns to negative confirmation to UE；UE initiates DHCP to the P-GW of core net It was found that message, P-GW returns to negative confirmation to UE.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110285539.2A CN103024865B (en) | 2011-09-23 | 2011-09-23 | A kind of core network access and network side initiate the method and system of attachment removal |
| PCT/CN2012/081861 WO2013041063A1 (en) | 2011-09-23 | 2012-09-24 | Method and system for accessing core network and for network side to initiate detachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110285539.2A CN103024865B (en) | 2011-09-23 | 2011-09-23 | A kind of core network access and network side initiate the method and system of attachment removal |
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| Publication Number | Publication Date |
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| CN103024865A CN103024865A (en) | 2013-04-03 |
| CN103024865B true CN103024865B (en) | 2018-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110285539.2A Expired - Fee Related CN103024865B (en) | 2011-09-23 | 2011-09-23 | A kind of core network access and network side initiate the method and system of attachment removal |
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| CN (1) | CN103024865B (en) |
| WO (1) | WO2013041063A1 (en) |
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| KR102314865B1 (en) | 2017-03-16 | 2021-10-19 | 삼성전자 주식회사 | A method for registering to a 5G network by a terminal using a temporary user identity |
| CN109040327A (en) * | 2017-06-09 | 2018-12-18 | 中兴通讯股份有限公司 | A kind of distribution method and device of IP address of mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2447546T3 (en) * | 2008-04-11 | 2014-03-12 | Telefonaktiebolaget L M Ericsson (Publ) | Access through non-3GPP access networks |
| CN101730151B (en) * | 2009-06-19 | 2012-05-09 | 中兴通讯股份有限公司 | Method, system and access service network gateway for realizing DHCP mode negotiation |
| WO2010151687A2 (en) * | 2009-06-24 | 2010-12-29 | Zte U.S.A., Inc. | Method and system for protocol configuration in wireless communication systems |
| CN103024931B (en) * | 2009-07-03 | 2016-01-13 | 电信科学技术研究院 | A kind of method and apparatus of releasing bearing resource |
| CN102149216B (en) * | 2010-02-09 | 2013-10-09 | 华为技术有限公司 | Activation processing method and device |
| CN102164187A (en) * | 2010-02-20 | 2011-08-24 | 中兴通讯股份有限公司 | Method and system for realizing terminal detachment process |
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2011
- 2011-09-23 CN CN201110285539.2A patent/CN103024865B/en not_active Expired - Fee Related
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| WO2013041063A1 (en) | 2013-03-28 |
| CN103024865A (en) | 2013-04-03 |
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