CN103428684B - The transmission method and system of a kind of gateway address information - Google Patents
The transmission method and system of a kind of gateway address information Download PDFInfo
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- CN103428684B CN103428684B CN201210156530.6A CN201210156530A CN103428684B CN 103428684 B CN103428684 B CN 103428684B CN 201210156530 A CN201210156530 A CN 201210156530A CN 103428684 B CN103428684 B CN 103428684B
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Abstract
The invention discloses the transmission method and system of a kind of gateway address information, terminal accesses the packet network of evolution by fixed network, and the P GW that one of PDN connections of the terminal are corresponding initiate the operation of IP CAN session terminations to PCRF；PCRF initiates gateway control session modification operation, and instruction fixed network deletes the address information of the P GW.Using the present invention, the redundancy on fixed network BNG can be deleted, improves the work efficiency of BNG.
Description
Technical field
The present invention relates to field of communication technology more particularly to the transmission methods and system of a kind of gateway address information.
Background technology
Third generation partner program (3rd Generation Partnership Project's, referred to as 3GPP) drills
Into grouping system (Evolved Packet System, referred to as EPS) by the Universal Terrestrial Radio Access Network of evolution
(Evolved Universal Terrestrial Radio Access Network, referred to as E-UTRAN), mobile management list
Member (Mobility Management Entity, referred to as MME), gateway (Serving Gateway, referred to as S-
GW), grouped data network gateway (Packet Data Network Gateway, referred to as P-GW), home subscriber server
(Home Subscriber Server, HSS), authentication and authorization charging (Authentication, Authorization of 3GPP
And Accounting, referred to as AAA) server, "Policy and Charging Rules Function (Policy and Charging Rules
Function, referred to as PCRF) entity and other support nodes composition.
As shown in fig. 1, wherein MME is responsible on mobile management, the processing of Non-Access Stratum signaling and user's mobile management
The related work of the control planes such as management hereafter；S-GW is the accessing gateway equipment being connected with E-UTRAN, in E-UTRAN and P-
Data are forwarded between GW, and are responsible for caching the pending datas such as paging；P-GW is then EPS and packet data network
The borde gateway of (Packet Data Network, referred to as PDN) network, is responsible for the access of PDN and is forwarded between EPS and PDN
The functions such as data；Data gateways of the wherein S-GW and P-GW as EPC networks, the present invention in EPC gateways refer to S-GW and/or
P-GW can be closed both when network is disposed and realized and be set and can also set up separately.PCRF is "Policy and Charging Rules Function entity, is led to
It crosses receiving interface Rx and carrier network agreement (Internet Protocol, referred to as IP) business network is connected, obtain business
Information in addition, PCRF is connected by Gx/Gxc interfaces with the gateway device in network, is responsible for initiating the foundation of IP carryings, is ensured
The service quality (Quality of Service, referred to as QoS) of business datum, and carry out charging control.
Current EPS system supports the intercommunication with non-3 GPP system.EPS is real by S2a/b/c interfaces with non-3 GPP system
Existing intercommunication, P-GW is as the anchor point between 3GPP and non-3 GPP system.In the system architecture diagram of EPS, non-3 GPP system access quilt
It is divided into trustless non-3 GPP access and trusted non-3 GPP access；Wherein, trustless non-3 GPP access need to pass through evolution
Packet data gateway (Evolved Packet Data Gateway, referred to as ePDG) is connected with P-GW, between ePDG and P-GW
Interface is S2b；Trusted non-3 GPP access can be directly connected by S2a interfaces with P-GW, and S2a interfaces use PMIP/GTP agreements
Carry out information exchange；In addition, S2c interfaces provide user equipment (User Equipment, referred to as UE, also referred to as terminal) with
The relevant control of user plane and mobility support between P-GW, the mobility management protocol supported are the movement for supporting double stacks
IPv6 (Mobile IPv6 Support for Dual Stack Hosts and Routers, referred to as DSMIPv6), can
For trustless non-3 gpp and trusted non-3 GPP access.
WLAN (Wireless LAN, referred to as WLAN) can be used as trustless non-3 GPP access EPS, and connect
Fashionable and S2b may be employed, the S2c of trust and fly-by-night S2c accesses are S2b and S2c scenes as shown in Figure 1.Several fields
The groundwork mechanism of scape is as follows：
1) S2b is accessed.IPsec tunnels are established between UE and ePDG, ePDG and P-GW establishes GTP PMIPv6 tunnels,
Both ends tunnel cascade, IP operation either third party's industry that UE is provided by the IP address visited network operator that P-GW is terminal distribution
The business that business business provides.The business datum of UE by ePDG reach fixed network after, user data be again pass by UE and ePDG it
Between ipsec tunnel encapsulation, that is to say, that the data packet for the terminal UE that the BNG of fixed network can be perceived is IPsec tunnels
Outer layer addresses, specifically, downlink data packet of illustrating, source address is the address of ePDG, and destination address is the local IP of UE
Address (IP address is distributed by fixed network for UE).
2) the S2c accesses trusted.Under this access way, ePDG is not involved in, UE directly established with P-GW IPsec tunnels and
DSMIP tunnels, the IP operation either third party that terminal UE is provided by the IP address visited network operator that P-GW is terminal distribution
The business that service provider provides.For the business datum of UE after leaving P-GW and reaching fixed network, user data is to again pass by UE and P-GW
Between ipsec tunnel encapsulation, that is to say, that the data packet for the terminal UE that the BNG of fixed network can be perceived is IPsec tunnels
Outer layer addresses, specifically, illustrate downlink data packet, source address is the address of P-GW, and destination address is the local of UE
IP address (IP address is distributed by fixed network for UE).
3) fly-by-night S2c is accessed, under this access way, the access of ePDG participation terminals UE.UE and ePDG is established
IPsec tunnels, in the city of the ipsec tunnel under, UE establishes ipsec tunnel and DSMIP tunnels with P-GW again, and terminal UE passes through
P-GW is the IP operation business that either third party service provider provides that the IP address visited network operator of terminal distribution provides.Data
Wrap the situation that the packing forms in fixed network are accessed with S2b.
The stream of the business datum of three of the above pattern is referred to as EPC-routed business data flows, referring to the heavy line in Fig. 1
It is shown.
In addition to above access way, terminal UE can also directly utilize outer by the local address visit of fixed network distribution
Portion's business, this partial data stream are referred to as NSWO (non-seamless WLAN offload, non-seamless WLAN shunt) data flow,
Referring to shown in the dotted line in Fig. 1.The data packet of these business datums is sealed with the local address of terminal and the address of Correspondent Node
Dress, that is to say, that the perceived outer layer addresses of fixed network are the home address informations of UE.
Gateway control session (the gateway control on S9a interfaces are established in Current protocol, between PCRF and BPCF
Session) for tactful intercommunication, and during the gateway control session on S9a interfaces are established, P-GW/ePDG is by P-
GW/eDPG address informations offer PCRF, and offer BPCF by PCRF, pass to BNG again successively.The P-GW/eDPG address informations
It is for distinguishing the business datum of the business datum of EPC-routed and NSWO in fixed network side, ensures business datum so as to independent
(the especially business datum of EPC-routed) QoS (especially bandwidth).Wherein in the network (next step evolvement network) of fusion
In, BPCF may not exist, but directly establish interface (such as Gxd interfaces) with BNG by PCRF and transmit above-mentioned P-GW/ePDG
Address information.
Terminal UE may have multiple PDN connections, corresponding multiple P-GW and P-GW addresses simultaneously, and P-GW addresses all pass through
Fixed network side (BPCF/BNG) is sent to by the gateway control session on the shared S9a interfaces of multiple PDN connections, often establishes one
A PDN connections, corresponding P-GW addresses will be sent to fixed network side (BPCF/BNG).It is operated referring to flow chart 2, and specific steps are retouched
It states as follows：
Step S201：Terminal UE accesses EPC by WLAN, and establishes first PDN connection, and PDN is referred to as in the present invention
Connection 1.
Step S202：P-GW initiates IP-CAN (IP-Connectivity Access for PDN connections 1 on Gx interfaces
Network, IP connection access net) session establishment operation.According to existing protocol, the address of P-GW-1 can bring PCRF.
Step S203：The gateway control session that PCRF is initiated on S9a interfaces establishes operation.According to existing protocol, P-GW-1
Address can be sent to BPCF.
BPCF is fixed network network element, and P-GW-1 address informations are further sent to fixed network BNG by BPCF, be may be employed directly
(passing through R interfaces) or indirectly mode (by fixed network AAA) etc..
Step S204：BNG in fixed network distinguishes the business datum and NSWO of EPC-routed using P-GW-1 address informations
Business datum, ensure business datum (the especially business datum of EPC-routed) QoS (especially bandwidth) so as to independent.
Step S205：Second PDN connection of terminal UE is established, which is referred to as PDN connections 2.
Step S206：P-GW initiates the operation of IP-CAN session establishments for PDN connections 2 on Gx interfaces.According to existing protocol,
The address of P-GW-2 can bring PCRF.
Step S207：PCRF initiates the gateway control session modification operation on S9a interfaces, i.e. gateway control and QoS rules
Operation is provided.According to existing protocol, the address of P-GW-2 can be sent to BPCF.
BPCF is fixed network network element, and P-GW-2 address informations are further sent to fixed network BNG by BPCF, be may be employed directly
(passing through R interfaces) or indirectly mode (by fixed network AAA) etc..
Step S208：BNG in fixed network distinguishes the business number of EPC-routed using P-GW-1 and P-GW-2 address informations
According to the business datum with NSWO, so as to independent guarantee business datum (the especially business datum of EPC-routed), QoS is (especially
Bandwidth).
Step S209：If also more PDN connections are established, corresponding P-GW address informations can pass through the above way
The BNG of fixed network is delivered to, BNG matches/filter data packet using the address information of these P-GW.
Step S210：The last one PDN connection of terminal is released.The scene is happened at, when the direct attachment removals of UE
Wait or UE gradually each PDN connection up to the last one PDN connection is released.
Step S211：The gateway control session that PCRF is initiated on S9a interfaces terminates operation.
Step S212：According to existing protocol, the BPCF and BNG of fixed network should be deleted or deactivated and the S9a interface phases
The context of pass, including all P-GW address informations.
In converged network (next step evolvement network), PCRF and BNG direct interfaces, be then at this time PCRF and BNG it
Between interface on initiate gateway control session foundation/modification operation.Its information transmission mechanism is same as above.
It is corresponding to be somebody's turn to do by analyzing above-mentioned flow it can be found that when terminal UE only deletes one of PDN connections
P-GW addresses cannot but be deleted from fixed network side, and the address information of the P-GW is in fixed network side or effective.This has resulted in fixed network
There are redundancies, it is often more important that, which can be used for matched data bag by BNG as effective information, seriously
Reduce matching efficiency of the fixed network to data.
Further, since for same UE, at a time only serviced there are one ePDG for it, therefore, for
The scene of ePDG address matching data packets, there is no it is above-mentioned the problem of.
The content of the invention
The technical problem to be solved by the present invention is to provide the transmission methods and system of a kind of gateway address information, delete fixed network
Redundancy on BNG improves the work efficiency of BNG.
In order to solve the above technical problems, the present invention provides a kind of transmission method of gateway address information, terminal passes through solid
The packet network of net access evolution,
Grouped data network gateway (P-GW) corresponding to one of packet data network (PDN) connection of the terminal
IP connections access net (IP-CAN) session termination operation is initiated to "Policy and Charging Rules Function (PCRF)；
The PCRF initiates gateway control session modification operation, and instruction fixed network deletes the address information of the P-GW.
Further, the method further includes：
The corresponding P-GW of the last one PDN connection of the terminal initiates IP-CAN session terminations behaviour to the PCRF
Make；
The PCRF initiates gateway control session and terminates operation, and instruction fixed network deletes the context of the gateway control session
It removes.
Further, the method further includes：
The terminal creates the corresponding P-GW of PDN connections and initiates the operation of IP-CAN session establishments to the PCRF；
The PCRF initiates gateway control session and establishes operation, and the address information of the P-GW is sent to the same of fixed network
When, instruction fixed network installs the address information of the P-GW.
Further, the PCRF receives IP-CAN session terminations, and the corresponding P- of IP-CAN sessions to be terminated
GW address informations are there is no during other corresponding IP-CAN sessions, then the PCRF instructions fixed network deletes the P-GW addresses letter
Breath；
Alternatively, when the PCRF receives IP-CAN session terminations, it indicates that fixed network deletes the P-GW address informations.
Further, the PCRF indicates fixed network installation or deletes the address information of the P-GW in the following manner：
The PCRF send simultaneously P-GW address information and operation instruction position to fixed network, referred to by the operation instruction position
Show fixed network installation or delete the P-GW address informations；
Wherein, the operation instruction position is when activating, installing, is effective or enabled, is indicated described in the fixed network installation
P-GW address informations；The operation instruction position is deactivates, unloading, invalid or when forbidding, and indicates that the fixed network deletes institute
State P-GW address informations.
Further, the PCRF indicates fixed network installation or deletes the address information of the P-GW in the following manner：
The PCRF sends the P-GW address informations cell for carrying effective address information to fixed network, indicates described in fixed network installation
P-GW address informations；
The PCRF sends the P-GW address informations cell for carrying full zero-address information to fixed network, indicates described in fixed network deletion
P-GW address informations.
Further, the PCRF indicates fixed network installation or deletes the address information of the P-GW in the following manner：
PCRF initiates the gateway control session modification operation on S9a interfaces, by the QoS with P-GW address informations of formulation
Rule is sent to fixed network；
When QoS rule operations are activation, installation, it is effective or enabled when, instruction fixed network installs the ground of the P-GW
Location information；When QoS rule operations to deactivate, it is unloading, invalid or when forbidding, instruction fixed network deletes the P-GW's
Address information.
Further, the fixed network includes BPCF and BNG；
The PCRF indicates the fixed network, is in the following manner：
The PCRF indicates that BPCF, BPCF directly notify BNG or notify BNG indirectly by AAA by S9a interfaces；
Alternatively, PCRF directly indicates BNG.
Further, the P-GW address informations include any one in following information：
The IPv4 addresses of P-GW；
The IPv4 addresses of P-GW and corresponding UDP port number；
The IPv6 network address prefixes of P-GW or IPv6 addresses；
The IPv6 network address prefixes of P-GW or IPv6 addresses and corresponding UDP port number.
The present invention also provides a kind of transmission system of gateway address information, applied to fixed network and the packet network of evolution
Converged network, the system comprises：IP-CAN Dialog processing units in P-GW, the gateway control session processing in PCRF are single
Member,
The IP-CAN Dialog processings unit is used for, and when deleting the PDN connections of terminal, it is whole to initiate IP-CAN sessions to PCRF
Only operate；
The gateway control session processing unit is used for, when receiving IP-CAN session terminations, if deleting its of terminal
In a PDN connection, then initiate gateway control session modification operation, instruction fixed network deletes the address information of the P-GW.
Further, the gateway control session processing unit is used for, when receiving IP-CAN session terminations, if deleting
The last one PDN connection of terminal then initiates gateway control session and terminates operation, indicates fixed network by the gateway control session
Context is deleted.
Further, the gateway control session processing unit is used for, and receives IP-CAN session terminations, and described to be terminated
The corresponding P-GW address informations of IP-CAN sessions there is no during other corresponding IP-CAN sessions, it indicates that fixed network delete described in
P-GW address informations；
Alternatively, when receiving IP-CAN session terminations, it indicates that fixed network deletes the P-GW address informations.
Further, the IP-CAN Dialog processings unit is additionally operable to, and when terminal creates PDN connections, is sent out to the PCRF
Play the operation of IP-CAN session establishments；
The gateway control session processing unit is additionally operable to, and when receiving IP-CAN session establishments, initiates gateway control session
Operation is established, while the address information of the P-GW is sent to fixed network, instruction fixed network installs the address letter of the P-GW
Breath.
Further, the gateway control session processing unit is used for, and is indicated fixed network installation in the following manner or is deleted
Except the address information of the P-GW：
Send simultaneously P-GW address information and operation instruction position to fixed network, pass through the operation instruction position and indicate that fixed network is pacified
Fill or delete the P-GW address informations；Wherein, the operation instruction position is when activating, installing, is effective or enabled, to refer to
Show that the fixed network installs the P-GW address informations；The operation instruction position is deactivates, unloading, invalid or when forbidding,
Indicate that the fixed network deletes the P-GW address informations；
Alternatively, sending the P-GW address informations cell for carrying effective address information to fixed network, instruction fixed network installs the P-
GW address informations；The P-GW address informations cell for carrying full zero-address information is sent to fixed network, instruction fixed network deletes the P-GW
Address information；
Alternatively, the gateway control session modification operation on S9a interfaces is initiated, by formulation with P-GW address informations
QoS rule are sent to fixed network；When the QoS rule operation for activation, installation, it is effective or enabled when, instruction fixed network installation
The address information of the P-GW；When QoS rule operations to deactivate, it is unloading, invalid or when forbidding, instruction fixed network is deleted
Except the address information of the P-GW.
Using the present invention program, when terminal UE only deletes one of PDN connections, corresponding P-GW addresses are smooth
Slave fixed network side delete or deactivate, the filtering of data packet will not be used further to.So ensure that fixed network being capable of timely processing
Redundancy, it is often more important that, which will not be used for matched data bag by BNG as effective information again, be improved
Matching efficiency of the fixed network to data.
Description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description does not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is that WLAN accesses EPC and the Organization Chart of support policy intercommunication according to prior art；
Fig. 2 is P-GW address informations report flow schematic diagram according to prior art；
Fig. 3 is according to embodiments of the present invention one flow diagram；
Fig. 4 is according to embodiments of the present invention two flow diagram.
Specific embodiment
Present embodiment provides a kind of transmission method of gateway address information, and concrete scheme is as follows：
In the case where fixed network and mobile network merge scene, terminal accesses EPC by WLAN and establishes PDN connections,
PCRF initiates gateway control session foundation or gateway control session modification operation, and the address information of P-GW is sent
While to fixed network, the P-GW address informations are installed or deleted to instruction fixed network.
Further, PCRF sends " P-GW address informations and the indicating bit of instruction operation " to fixed network or PCRF simultaneously
Send the P-GW address informations cell for carrying effective address information either full zero-address information to fixed network instruction fixed network installation or
Delete the P-GW address informations.
Alternatively, PCRF formulates the QoS rule with P-GW address informations and is sent to fixed network；
Fixed network is installed according to the QoS rule with P-GW address informations or deletes the P-GW information, and according to more
Filtering rule filtering data packet after new.
Further, after UE establishes PDN connections, P-GW initiates IP-CAN session establishments for PDN connections, by the address of P-GW
It is sent to PCRF；
The gateway control session that PCRF is initiated on S9a interfaces establishes operation, by the address of the corresponding P-GW of the PDN connections
Information and operation instruction position are sent to fixed network, and the operation instruction position is：Activation/installation/effectively/enabled etc.；
Fixed network distinguishes the business datum of EPC-routed according to the operation instruction position using the address information of the P-GW
With the business datum of NSWO.
Further, when one of PDN connections of UE are released, PCRF initiates the gateway control session on S9a interfaces
Modification operation, is sent to fixed network, institute by the address information of the corresponding P-GW of PDN connections being released and operation instruction position
Stating operation instruction position is：Deactivation/unloading is/invalid/to be forbidden；
The address information of the P-GW is deleted or deactivated to fixed network, no longer with the P-GW according to the operation instruction position
Address information carry out the filtering of data packet and QoS resource guarantee.
Further, when the last one PDN connection of UE is released, PCRF initiates the gateway control session on S9a interfaces
Operation is terminated, instruction fixed network deletes the context of the gateway control session.
Further, PCRF initiates the gateway control on S9a interfaces and QoS rule offer operations, and QoS rule are sent out
Fixed network is given, wherein containing the address information of P-GW；
Fixed network is according to the QoS rule, when QoS rule operations are：Activation/installation/effectively/is durings enabled grade, peace
Fill the P-GW address informations；When QoS rule operations are：Deactivation/unloading is/invalid/to delete/forbids whens waiting, and deletes institute
State P-GW address informations.
Further, the fixed network includes BPCF and BNG.
Further, PCRF provides operation instruction fixed network with strategy by the gateway control of S9a interfaces and enables or delete
P-GW address informations, refer to：PCRF indicates that BPCF, BPCF directly notify BNG or notified indirectly by AAA by S9a interfaces
BNG。
Further, heretofore described P-GW address informations refer to any one in following information：
The IPv4 addresses of P-GW；
The IPv4 addresses of P-GW and corresponding UDP port number；
The IPv6 network address prefixes of P-GW or IPv6 addresses；
The IPv6 network address prefixes of P-GW or IPv6 addresses and corresponding UDP port number.
Understand to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where there is no conflict, in the embodiment and embodiment in the application
Feature can mutually be combined.
Embodiment one
In the present embodiment, in the gateway control session on S9a interfaces, in addition to transferring the address information of P-GW, also
Transfer an operation instruction position.The effect of the operation instruction position be indicate the P-GW address informations be activation or deactivation or
It is installation or unloading or effective or invalid.
As shown in figure 3, the present embodiment flow is described in detail below：
Step S301-S302：Referring to step S201-S202；
Step S303：PCRF is subject to triggering for the IP-CAN session establishments of step S302, find current S9a interfaces not with
The corresponding gateway control session of IP-CAN sessions, the then gateway control session that PCRF is initiated on S9a interfaces establish operation.
Wherein, PCRF judge on S9a interfaces whether there is for the corresponding gateway control session of IP-CAN sessions criterion such as
Under：Since the gateway control session on S9a interfaces and IP-CAN sessions are many-to-one relations, if PCRF has found the IP-CAN
Session is that first IP-CAN session (the IP-CAN sessions of first PDN connection) of the UE is served on the PCRF, then recognizes
There is no the gateway control session on corresponding S9a interfaces for the IP-CAN sessions.
The address of P-GW-1 and corresponding operation instruction position 1 are sent to BPCF.BPCF is fixed network network element, BPCF further
The address of P-GW-1 and corresponding operation instruction position 1 are sent to fixed network BNG, may be employed direct (by R interfaces) or indirect
Mode (by fixed network AAA) etc..
Due to being currently that operation is established in PDN connections, indicating bit should be set to：Activation/installation/effectively/enabled.
Step S304：BNG in fixed network distinguishes EPC- according to the instruction of operation instruction position using P-GW-1 address informations
The business datum of routed and the business datum of NSWO ensure business datum (the especially business of EPC-routed so as to independent
Data) QoS (especially bandwidth).
Step S305-S306：Referring to step S205-S206；
Step S307：PCRF is subject to triggering for the IP-CAN session establishments of step S306, find current S9a interfaces exist with
The corresponding gateway control session of IP-CAN sessions, PCRF initiate the gateway control session modification operation on S9a interfaces, i.e. gateway
Control and QoS rules provide operation.
Wherein, PCRF judge on S9a interfaces whether there is for the corresponding gateway control session of IP-CAN sessions criterion such as
Under：Gateway control session and IP-CAN sessions on S9a interfaces are many-to-one relations, if PCRF has found the IP-CAN sessions
It is (non-first) IP-CAN sessions of serving the UE second, third ... on the PCRF, then it is assumed that the IP-CAN sessions
Have existed the gateway control session on corresponding S9a interfaces.
The address of P-GW-2 and corresponding operation instruction position 2 are sent to BPCF.BPCF is fixed network network element, BPCF further
The address of P-GW-2 and corresponding operation instruction position 2 are sent to fixed network BNG, may be employed direct (by R interfaces) or indirect
Mode (by fixed network AAA) etc..
Due to being currently that operation is established in PDN connections, indicating bit should be set to：Activation/installation/effectively/enabled.
Step S308：BNG in fixed network utilizes P-GW-1 and P-GW-2 address informations area according to the instruction of operation instruction position
Divide the business datum of EPC-routed and the business datum of NSWO, ensure business datum (especially EPC-routed so as to independent
Business datum) QoS (especially bandwidth).
Step S309：If also more PDN connections are established, corresponding P-GW address informations can pass through the above way
The BNG of fixed network is delivered to, BNG matches/filter data packet using the address information of these P-GW.
Step S310：One of PDN connections of terminal are released.Assume that PDN connections 1 are released in the present embodiment.
Step S311：P-GW-1 initiates IP-CAN sessions -1 and terminates operation.
Step S312：PCRF is subject to triggering for the IP-CAN session terminations of step S311, and discovery also exists to be connect with current S9a
Other corresponding IP-CAN sessions (corresponding others PDN connections) of gateway control session on mouth, PCRF is initiated on S9a interfaces
Gateway control session modification operation, i.e. gateway control and QoS rules provide operation.The address of P-GW-1 and corresponding operation instruction
Position 1 is sent to BPCF.BPCF is fixed network network element, and BPCF further sends the address of P-GW-1 and corresponding operation instruction position 1
Fixed network BNG is given, direct (by R interfaces) or indirectly mode (by fixed network AAA) etc. may be employed.
Alternatively, as further optimization, the corresponding operation instruction position 1 in P-GW-1 addresses can be only sent to BPCF.BPCF
Operation instruction position 1 is further sent to fixed network BNG.
Due to being currently the operation of PDN Connection Releases, thereby indicate that position should be set to：Deactivation/unloading is/invalid/to be forbidden.
Step S313：BNG deletes or deactivates the P-GW-1 address informations, and the mistake of data packet is no longer used for this information
Filter and QoS resource guarantee.
Step S314：Other PDN Connection Releases of the UE, if corresponding PCRF also serve the UE other do not discharge
PDN connections, operating procedure is referring to S311-S313；If all IP-CAN sessions of some UE of PCRF services are all
It is released, then performs step S211-S212.
Since each PDN establishment of connections can establish the IP-CAN sessions on corresponding Gx interfaces, and IP-CAN sessions
The address information of P-GW can be all reported during establishing, even if that two PDN connect selection is same P-GW, situation is also such as
This.Therefore, in above-mentioned process step, after PCRF receives IP-CAN session establishments or terminates operation, one layer of judgement is also done, and
And there are following two possible operations：
Scheme one：
If 1) PCRF receives a new P-GW address, PCRF is reported to fixed network；
2) if the P-GW address informations that PCRF is received reported and submitted that the P-GW information to fixed network is identical, and PCRF is not required to last time
Fixed network is reported to again；
3) if PCRF receives IP-CAN session delete operations, but also there are other correspondences for corresponding P-GW address informations
IP-CAN sessions, then PCRF do not perform operation；
4) if PCRF receives IP-CAN session delete operations, and no longer there are other correspondences for corresponding P-GW address informations
IP-CAN sessions, then PCRF notify fixed network delete the P-GW address informations；
Scheme two：
When PCRF receives IP-CAN session establishments or terminates operation every time, the finger of P-GW address informations is initiated to fixed network
Show installation or delete operation.
In converged network (next step evolvement network), PCRF and BNG direct interfaces, be then at this time PCRF and BNG it
Between interface on initiate gateway control session foundation/modification operation.Information transmission mechanism is same as above.
In addition, as a kind of deformation to the present embodiment, the corresponding operation instruction position 1 in P-GW-1 addresses can also omit,
But indicate the operation of BPCF by setting P-GW address informations as special value, for example, by setting P-GW address informations
It indicates that fixed network (BPCF and BNG) is installed and used for virtual value (nonzero value), is full zero by the address information for setting P-GW
To indicate that fixed network cancels the address information.
Embodiment two
In the present embodiment, in the gateway control session on S9a interfaces, the address letter of P-GW is transferred in the following way
Breath：PCRF constructs new QoS rules by P-GW address informations, because QoS rules are either deleted by establishing modification
Division operation, therefore can just indicate whether P-GW address informations are effective in fixed network side by the operation of QoS rules, if nothing
Effect is just deleted.
PCRF initiates the determination methods of gateway control session foundation/modification/delete operation with embodiment one.
As shown in figure 4, the present embodiment flow is described in detail below：
Step S401-S402：Referring to step S201-S202；
Step S403：PCRF constructs the QoS rule for including P-GW-1 address informations.Specific QoS rule include SDF
Template (service data flow template, business datum flow template), and have five-tuple in SDF template
Information, wherein P-GW-1 address informations are as one in five-tuple information, by comprising wherein.
Step S404：The gateway control session that PCRF is initiated on S9a interfaces establishes operation.And QoS rule are sent to
BPCF.Wherein contain the address information of P-GW-1.
BPCF is fixed network network element, and QoS rule information is further sent to fixed network BNG by BPCF, be may be employed directly (logical
Cross R interfaces) or indirect mode (by fixed network AAA) etc..
Due to being currently that operation is established in PDN connections, QoS rule operations should be：Activation/installation/effectively/enabled.
Step S405：BNG in fixed network utilizes the industry of P-GW-1 address informations differentiation EPC-routed according to QoS rule
The business datum of data of being engaged in and NSWO ensures that business datum (the especially business datum of EPC-routed) QoS is (outstanding so as to independent
It is bandwidth).
Step S406-S407：Referring to step S205-S206.
Step S408：PCRF constructs the QoS rule for including P-GW-2 address informations.Specific QoS rule include SDF
Template, and have five-tuple information in SDF template, wherein P-GW-2 address informations are as one in five-tuple information
, by comprising wherein.
Step S409：PCRF initiates gateway control and QoS rule offer operations on S9a interfaces.And QoS rule are sent out
Give BPCF.Wherein contain the address information of P-GW-2.BPCF is fixed network network element, and BPCF further sends out QoS rule information
Fixed network BNG is given, direct (by R interfaces) or indirectly mode (by fixed network AAA) etc. may be employed.
Due to being currently that operation is established in PDN connections, QoS rule operations should be：Activation/installation/effectively/enabled.
Step S410：BNG in fixed network utilizes P-GW-1 address informations and P-GW-2 address informations area according to QoS rule
Divide the business datum of EPC-routed and the business datum of NSWO, ensure business datum (especially EPC-routed so as to independent
Business datum) QoS (especially bandwidth).
Step S411：If also more PDN connections are established, corresponding P-GW address informations can pass through the above way
The BNG of fixed network is delivered to, BNG matches/filter data packet using the address information of these P-GW.
Step S412：One of PDN connections of terminal are released.Assume that PDN connections 1 are released in the present embodiment.
Step S413：P-GW-1 initiates IP-CAN sessions -1 and terminates operation.
Step S414：PCRF initiates the gateway control session modification operation on S9a interfaces, i.e. gateway control and QoS rules
Operation is provided, and indicates that BPCF deletes corresponding QoS rule.
BPCF is fixed network network element, and above- mentioned information is further sent to fixed network BNG by BPCF, may be employed and directly (is connect by R
Mouthful) or indirect mode (by fixed network AAA) etc..
Due to being currently that PDN Connection Releases operate, QoS rule should be deleted from fixed network.
Step S415：BNG is deleted or is deactivated the QoS rule, including the P-GW-1 address informations, is no longer used
This information is used for the filtering of data packet and QoS resource guarantee.
Step S416：Other PDN Connection Releases of the UE are referring to step S412-S415.
By above-mentioned flow it can be found that when terminal UE only deletes one of PDN connections, corresponding P-GW
Location is smoothly deleted or is deactivated from fixed network side, will not be used further to the filtering of data packet.So ensure that fixed network can and
When handle redundancy, it is often more important that, BNG will not again the P-GW address informations as effective information be used for matched data
Bag, improves matching efficiency of the fixed network to data.
The method of the present invention is except being suitable for the transmission of P-GW address informations in addition to deletion, applying also for the address of other scenes
The transmission and transmission of information, for example, how the address information of ePDG stated in the background by PCRF is sent to fixed network,
This method transmission may be employed.How the address of SeGW also in Home eNodeB scene by PCRF is sent to fixed network, also may be used
To be transmitted using this method.
In addition, additionally providing a kind of transmission system of gateway address information (not shown) in the embodiment of the present invention, it is applied to
The converged network of fixed network and the packet network of evolution, the system mainly include：IP-CAN Dialog processing units in P-GW, PCRF
In gateway control session processing unit,
The IP-CAN Dialog processings unit is used for, and when deleting the PDN connections of terminal, it is whole to initiate IP-CAN sessions to PCRF
Only operate；
The gateway control session processing unit is used for, when receiving IP-CAN session terminations, if deleting its of terminal
In a PDN connection, then initiate gateway control session modification operation, instruction fixed network deletes the address information of the P-GW.
Further, the gateway control session processing unit is used for, when receiving IP-CAN session terminations, if deleting
The last one PDN connection of terminal then initiates gateway control session and terminates operation, indicates fixed network by the gateway control session
Context is deleted.
Further, the gateway control session processing unit is used for, and receives IP-CAN session terminations, and described to be terminated
The corresponding P-GW address informations of IP-CAN sessions there is no during other corresponding IP-CAN sessions, it indicates that fixed network delete described in
P-GW address informations；
Alternatively, when receiving IP-CAN session terminations, it indicates that fixed network deletes the P-GW address informations.
Further, the IP-CAN Dialog processings unit is additionally operable to, and when terminal creates PDN connections, is sent out to the PCRF
Play the operation of IP-CAN session establishments；
The gateway control session processing unit is additionally operable to, and when receiving IP-CAN session establishments, initiates gateway control session
Operation is established, while the address information of the P-GW is sent to fixed network, instruction fixed network installs the address letter of the P-GW
Breath.
Further, the gateway control session processing unit is used for, and is indicated fixed network installation in the following manner or is deleted
Except the address information of the P-GW：
Send simultaneously P-GW address information and operation instruction position to fixed network, pass through the operation instruction position and indicate that fixed network is pacified
Fill or delete the P-GW address informations；Wherein, the operation instruction position is when activating, installing, is effective or enabled, to refer to
Show that the fixed network installs the P-GW address informations；The operation instruction position is deactivates, unloading, invalid or when forbidding,
Indicate that the fixed network deletes the P-GW address informations；
Alternatively, sending the P-GW address informations cell for carrying effective address information to fixed network, instruction fixed network installs the P-
GW address informations；The P-GW address informations cell for carrying full zero-address information is sent to fixed network, instruction fixed network deletes the P-GW
Address information；
Alternatively, the gateway control session modification operation on S9a interfaces is initiated, by formulation with P-GW address informations
QoS rule are sent to fixed network；When the QoS rule operation for activation, installation, it is effective or enabled when, instruction fixed network installation
The address information of the P-GW；When QoS rule operations to deactivate, it is unloading, invalid or when forbidding, instruction fixed network is deleted
Except the address information of the P-GW.
It these are only that the present invention's is preferably implemented case, be not intended to limit the invention, the present invention can also have other
Various embodiments, without deviating from the spirit and substance of the present invention, those skilled in the art can be according to this hairs
It is bright to make various corresponding changes and deformation, but these corresponding changes and deformation should all belong to appended claims of the invention
Protection domain.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Computing device realize that they can concentrate on single computing device or be distributed in multiple computing devices and be formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
Performed in the storage device by computing device, and in some cases, can be performed with the order being different from herein shown in
The step of going out or describing they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.It to be combined in this way, the present invention is not limited to any specific hardware and softwares.
Claims (13)
1. a kind of transmission method of gateway address information, which is characterized in that terminal accesses the packet network of evolution by fixed network,
One of packet data network (PDN) of the terminal connects corresponding grouped data network gateway (P-GW) to plan
IP is slightly initiated with charging rule functions (PCRF) and connects access net (IP-CAN) session termination operation；
The PCRF initiates gateway control session modification operation, and instruction fixed network deletes the address information of the P-GW；
Wherein, the fixed network includes BPCF and BNG；
The PCRF indicates the fixed network, is in the following manner：
The PCRF indicates that BPCF, BPCF directly notify BNG or notify BNG indirectly by AAA by S9a interfaces；
Alternatively, PCRF directly indicates BNG.
2. the method as described in claim 1, which is characterized in that the method further includes：
The corresponding P-GW of the last one PDN connection of the terminal initiates the operation of IP-CAN session terminations to the PCRF；
The PCRF initiates gateway control session and terminates operation, and instruction fixed network deletes the context of the gateway control session.
3. the method as described in claim 1, which is characterized in that the method further includes：
The terminal creates the corresponding P-GW of PDN connections and initiates the operation of IP-CAN session establishments to the PCRF；
The PCRF initiates gateway control session and establishes operation, while the address information of the P-GW is sent to fixed network, refers to
Show that fixed network installs the address information of the P-GW.
4. the method as described in claim 1, which is characterized in that
The PCRF receives IP-CAN session terminations, and the corresponding P-GW address informations of the IP-CAN sessions to be terminated are no longer
When having other corresponding IP-CAN sessions, then the PCRF instructions fixed network deletes the P-GW address informations；
Alternatively, when the PCRF receives IP-CAN session terminations, it indicates that fixed network deletes the P-GW address informations.
5. the method as described in claim 1 or 3, which is characterized in that the PCRF indicate in the following manner fixed network installation or
Person deletes the address information of the P-GW：
The PCRF send simultaneously P-GW address information and operation instruction position to fixed network, indicated by the operation instruction position solid
The P-GW address informations are deleted in net installation；
Wherein, the operation instruction position is when activating, installing, is effective or enabled, to indicate that the fixed network installs the P-GW
Address information；The operation instruction position is deactivates, unloading, invalid or when forbidding, and indicates that the fixed network deletes the P-
GW address informations.
6. the method as described in claim 1 or 3, which is characterized in that the PCRF indicate in the following manner fixed network installation or
Person deletes the address information of the P-GW：
The PCRF sends the P-GW address informations cell for carrying effective address information to fixed network, and instruction fixed network installs the P-GW
Address information；
The PCRF sends the P-GW address informations cell for carrying full zero-address information to fixed network, and instruction fixed network deletes the P-GW
Address information.
7. the method as described in claim 1 or 3, which is characterized in that the PCRF indicate in the following manner fixed network installation or
Person deletes the address information of the P-GW：
PCRF initiates the gateway control session modification operation on S9a interfaces, by the QoS with P-GW address informations of formulation
Rule is sent to fixed network；
When QoS rule operations are activation, installation, it is effective or enabled when, instruction fixed network installs the address letter of the P-GW
Breath；When QoS rule operations to deactivate, it is unloading, invalid or when forbidding, instruction fixed network deletes the address of the P-GW
Information.
8. the method as described in claim 1, which is characterized in that
The P-GW address informations include any one in following information：
The IPv4 addresses of P-GW；
The IPv4 addresses of P-GW and corresponding UDP port number；
The IPv6 network address prefixes of P-GW or IPv6 addresses；
The IPv6 network address prefixes of P-GW or IPv6 addresses and corresponding UDP port number.
A kind of 9. transmission system of gateway address information, which is characterized in that the fusion applied to fixed network and the packet network of evolution
Network, the system comprises：IP-CAN Dialog processing units in P-GW, the gateway control session processing unit in PCRF,
The IP-CAN Dialog processings unit is used for, and when deleting the PDN connections of terminal, IP-CAN session terminations behaviour is initiated to PCRF
Make；
The gateway control session processing unit is used for, when receiving IP-CAN session terminations, if deleting wherein the one of terminal
A PDN connections, then initiate gateway control session modification operation, and instruction fixed network deletes the address information of the P-GW；
Wherein, the fixed network includes BPCF and BNG；
The PCRF indicates the fixed network, is in the following manner：
The PCRF indicates that BPCF, BPCF directly notify BNG or notify BNG indirectly by AAA by S9a interfaces；
Alternatively, PCRF directly indicates BNG.
10. system as claimed in claim 9, which is characterized in that
The gateway control session processing unit is used for, when receiving IP-CAN session terminations, if deleting last of terminal
A PDN connections then initiate gateway control session and terminate operation, and instruction fixed network deletes the context of the gateway control session.
11. system as claimed in claim 9, which is characterized in that
The gateway control session processing unit is used for, and receives IP-CAN session terminations, and the IP-CAN sessions to be terminated
There is no during other corresponding IP-CAN sessions for corresponding P-GW address informations, it indicates that fixed network deletes the P-GW addresses letter
Breath；
Alternatively, when receiving IP-CAN session terminations, it indicates that fixed network deletes the P-GW address informations.
12. the system as described in claim 9,10 or 11, which is characterized in that
The IP-CAN Dialog processings unit is additionally operable to, and when terminal creates PDN connections, is initiated IP-CAN sessions to the PCRF and is built
Vertical operation；
The gateway control session processing unit is additionally operable to, and when receiving IP-CAN session establishments, is initiated gateway control session and is established
Operation, while the address information of the P-GW is sent to fixed network, instruction fixed network installs the address information of the P-GW.
13. system as claimed in claim 12, which is characterized in that
The gateway control session processing unit is used for, and is indicated fixed network installation in the following manner or is deleted the ground of the P-GW
Location information：
Send simultaneously P-GW address information and operation instruction position to fixed network, by the operation instruction position indicate fixed network installation or
Person deletes the P-GW address informations；Wherein, the operation instruction position is when activating, installing, is effective or enabled, to indicate institute
It states fixed network and the P-GW address informations is installed；The operation instruction position is deactivates, unloading, invalid or when forbidding, instruction
The fixed network deletes the P-GW address informations；
Alternatively, sending the P-GW address informations cell for carrying effective address information to fixed network, instruction fixed network is with installing the P-GW
Location information；The P-GW address informations cell for carrying full zero-address information is sent to fixed network, instruction fixed network deletes the P-GW addresses
Information；
Alternatively, the gateway control session modification operation on S9a interfaces is initiated, by the QoS with P-GW address informations of formulation
Rule is sent to fixed network；When the QoS rule operation for activation, installation, it is effective or enabled when, instruction fixed network installation described in
The address information of P-GW；When QoS rule operations to deactivate, it is unloading, invalid or when forbidding, instruction fixed network deletes institute
State the address information of P-GW.
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