CN101588325A - Disaster recovery method, device and system based on wireless packet gateways - Google Patents

Disaster recovery method, device and system based on wireless packet gateways Download PDF

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Publication number
CN101588325A
CN101588325A CNA2008101608574A CN200810160857A CN101588325A CN 101588325 A CN101588325 A CN 101588325A CN A2008101608574 A CNA2008101608574 A CN A2008101608574A CN 200810160857 A CN200810160857 A CN 200810160857A CN 101588325 A CN101588325 A CN 101588325A
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gateway
wireless packet
standby wireless
information
packet
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CN101588325B (en
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孙晓姬
张进
袁立平
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN2008101608574A priority Critical patent/CN101588325B/en
Priority to PCT/CN2009/071876 priority patent/WO2009140919A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

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

Abstract

The invention provides a disaster recovery method based on wireless packet gateways. The method specifically comprises: choosing a standby wireless packet gateway of a master wireless packet gateway according to acquired information of the standby wireless packet gateway when the master wireless packet gateway is unavailable, wherein the standby wireless packet gateway and the master wireless packet gateway have a section of the same address pool; and establishing path connection with the standby wireless packet gateway. The invention also provides a packet data network gateway device and a disaster recovery system based on the wireless packet gateways. Through the method provided by the embodiment of the invention, the invention gives a specific proposal for realizing disaster recovery based on the wireless packet gateways, thereby reducing network risk and improving service quality.

Description

A kind of disaster recovery method, equipment and system based on packet radio gateway
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of disaster recovery method, equipment and system based on packet radio gateway.
Background technology
In order to strengthen the competitiveness of future network, 3GPP (third Generation Partnership Project, third generation collaborative project) is studying a kind of brand-new evolvement network.Cause service disconnection in order to reduce natural calamity, provide high-quality, stable service to the user, described brand-new evolvement network has proposed the notion of PGW POOL (Packet Data Network GatewayPool, grouped data network gateway resource pool).
The inventor finds that there are the following problems at least in the prior art in realizing process of the present invention:
Do not provide the specific implementation of PGW POOL in the 3GPP agreement, and then do not provide the specific implementation that realizes disaster tolerance based on PGW POOL yet.
Summary of the invention
Embodiments of the invention provide a kind of specific implementation method, equipment and system of the disaster tolerance based on packet radio gateway, to reduce because the unavailable network risks that causes of current wireless packet gateway.
Embodiments of the invention provide a kind of disaster recovery method based on packet radio gateway, comprising:
When the master is unavailable with packet radio gateway, according to the described main standby wireless packet gateway with packet radio gateway of the standby wireless packet gateway Information Selection of obtaining, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway;
Setting up the path with described standby wireless packet gateway is connected.
Embodiments of the invention provide a kind of packet data network gateway device again, are used for subscriber equipment is linked into packet data network, comprising:
Packet radio gateway is selected module, be used for when the master is unavailable with packet radio gateway, according to the described main standby wireless packet gateway with the packet radio gateway correspondence of the standby wireless packet gateway Information Selection of obtaining, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway;
Module is set up in the path, is used for selecting the standby wireless packet gateway of module selection to set up the path with described packet radio gateway and is connected.
Embodiments of the invention provide a kind of mobile management network element or service gateway entity again, comprising:
Receiver module, be used to receive main with the wireless packet data networks gateway device send be equipped with use packet radio gateway information;
Mobile management network element or service gateway entity, be used for according to the described main standby wireless packet gateway of described standby wireless packet gateway Information Selection with the packet radio gateway correspondence, setting up the path with the standby wireless packet gateway of described selection is connected, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway.
Embodiments of the invention provide another disaster tolerance system based on packet radio gateway, comprising:
Packet data network gateway device, be used for described packet data network gateway device when unavailable, according to the described main standby wireless packet gateway of the standby wireless packet gateway Information Selection of obtaining with the packet radio gateway correspondence, the standby wireless packet gateway information of described selection is sent to mobile management network element or service gateway entity, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway;
Mobile management network element or service gateway entity are used for setting up the path with the standby wireless packet gateway of described selection and are connected.
Embodiments of the invention provide a kind of disaster tolerance system based on packet radio gateway again, comprising:
Packet data network gateway device is used for described packet data network gateway device when unavailable, sends standby wireless packet gateway information to mobile management network element or service gateway entity;
Mobile management network element or service gateway entity, be used for according to the described main standby wireless packet gateway of described standby wireless packet gateway Information Selection with the packet radio gateway correspondence, setting up the path with the standby wireless packet gateway of described selection is connected, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway.
The technical scheme that is provided by the embodiment of the invention described above provides a kind of specific implementation of the disaster tolerance based on packet radio gateway, thereby can reduce network risks as can be seen in the embodiment of the invention, improve service quality.
Description of drawings
The system schematic of a kind of processing procedure of using the embodiment of the invention and providing is provided Fig. 1;
A kind of standby wireless packet gateway information processing process schematic diagram that obtains that Fig. 2 provides for the embodiment of the invention;
The another kind that Fig. 3 provides for the embodiment of the invention obtains standby wireless packet gateway information processing process schematic diagram;
Fig. 4 provide for the embodiment of the invention the third obtain standby wireless packet gateway information processing process schematic diagram;
The processing procedure schematic diagram of a kind of PGW of switching that Fig. 5 provides for the embodiment of the invention;
The another kind that Fig. 6 provides for the embodiment of the invention switches the processing procedure schematic diagram of PGW;
Fig. 7 provide for the embodiment of the invention the third switch the processing procedure schematic diagram of PGW;
The processing procedure schematic diagram of a kind of deleting bearing that Fig. 8 provides for the embodiment of the invention;
The processing procedure schematic diagram of a kind of switching access networks that Fig. 9 provides for the embodiment of the invention;
The process schematic diagram of a kind of tracking area/Routing Area Update that Figure 10 provides for the embodiment of the invention;
The structural representation of a kind of packet data network gateway device that Figure 11 provides for the embodiment of the invention;
The structural representation of a kind of disaster tolerance system based on packet radio gateway that Figure 12 provides for the embodiment of the invention;
The 4th kind of processing procedure schematic diagram that switches PGW that Figure 13 provides for the embodiment of the invention.
Embodiment
In the embodiment of the invention, when main during with packet radio gateway unavailable (lead as described with packet radio gateway and break down, load balancing, transship, need maintenance, load migration or path failure occurs), select described main standby wireless packet gateway with packet radio gateway, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway; Described address pool comprises an above address information such as IP address etc., and described address information is used to distribute to the network equipment such as user equipment (UE) communicates.Setting up the path with described standby wireless packet gateway then is connected.
The invention described above embodiment also comprises the process of described master with the information of the standby wireless packet gateway of packet radio gateway of obtaining, this process specifically can comprise: in the subscriber equipment attaching process, perhaps set up PDN (PacketData Network at subscriber equipment and network side, Packet Data Network) in the connection procedure, perhaps carry out PDP (Packet Data Protocol the user, packet data protocol) in the activation, (described standby wireless packet gateway can be the standby wireless packet gateway of station address address pond correspondence to obtain the information of described standby wireless packet gateway, also can be described main all standby wireless packet gateway) with packet radio gateway, described standby wireless packet gateway is selected with packet radio gateway by main, specifically can be that described master selects in the packet radio gateway resource pool with packet radio gateway, described packet radio gateway resource pool is made up of a plurality of independently packet radio gateways, and the packet radio gateway that has one section identical address pool is active and standby each other; Perhaps, obtain the information of the corresponding relation of presentation address pond that described master sends with packet radio gateway and standby wireless packet gateway, and from the information of described corresponding relation, obtain the information of described standby wireless packet gateway, the information of the corresponding relation of described presentation address pond and standby wireless packet gateway specifically can be the correspondence relationship information of address pool and standby wireless packet gateway, or APN (Access PointName, APN) with the correspondence relationship information of standby wireless packet gateway, or the correspondence relationship information of PDN and standby wireless packet gateway or the like; Perhaps, when the service mobile management network element of subscriber equipment changes, obtain the information of the described standby wireless packet gateway of source mobile management network element transmission; Perhaps, obtain described main standby wireless packet gateway by the standby between the packet radio gateway of configuration with packet radio gateway, perhaps, by DNS (Domain Name System, the domain name supervising system) resolves described master obtains described standby wireless packet gateway with the relevant information of packet radio gateway information, described master can comprise specifically that with the relevant information of packet radio gateway comprising the master uses packet radio gateway information (as address information, another name or the like) APN, or APN+ master uses the packet radio gateway address, or it is the main packet radio gateway address of using, or main with packet radio gateway another name or the like.Wherein, the information of described standby wireless packet gateway address, another name that specifically can be standby wireless packet gateway or the like can be used to identify the information of described packet radio gateway.
Above-mentioned master specifically can be obtained for the user provides the mobile management network element of service or service gateway entity by current with the information of the standby wireless packet gateway of packet radio gateway.
Among the invention described above embodiment, the described master of described selection specifically can comprise with the process of the standby wireless packet gateway of packet radio gateway: according to the information of the described standby wireless packet gateway of obtaining, select the standby wireless packet gateway in station address address pond.For example, if obtain the information of described standby wireless packet gateway in the information according to the corresponding relation of presentation address pond and standby wireless packet gateway, then can be the address address pond corresponding standby wireless packet gateway of subscriber equipment selection according to the corresponding relation of described address pool and standby wireless packet gateway with this subscriber equipment; If obtain the information of described standby wireless packet gateway,, therefrom be that subscriber equipment is selected the corresponding standby wireless packet gateway in address pond, address with this subscriber equipment then according to the information of described standby wireless packet gateway by other modes.
Among the invention described above embodiment, after path described and described standby wireless packet gateway was set up, described standby wireless packet gateway was upgraded user's descending route by issue dynamic routing segment information, so can avoid each user all to issue a main frame route.
In order to return in time the IP address, prevent primary, spare packet radio gateway duplicate allocation IP address, among the invention described above embodiment, main with packet radio gateway recover available after, discharges the carrying of described main identical address pool with packet radio gateway and described standby wireless packet gateway.After finishing this operation, described standby wireless packet gateway sends the address pool information of its release to described master with packet radio gateway, and described master activates described address pool with packet radio gateway.
Wherein, the described master of described release specifically comprises with the process of the carrying of the identical address pool of packet radio gateway and described standby wireless packet gateway:
(1) obtain main with the address of described packet radio gateway and the address of described standby wireless packet gateway; Discharge described main with packet radio gateway PDN carrying according to described main address with packet radio gateway; Discharge the PDN carrying of described standby wireless packet gateway according to the address of described standby wireless packet gateway, described PDN is carried as the PDN carrying of the identical address pool of described primary, spare packet radio gateway;
Or use the identical address pool of packet radio gateway with the master in the described standby wireless packet gateway of (two) release;
Or the described standby wireless packet gateway of (three) deexcitation.
In order to return in time the IP address, prevent primary, spare packet radio gateway duplicate allocation IP address, another solution also is provided, specifically can be: but the time spent recovered with packet radio gateway as described master, describedly mainly send address pool with packet radio gateway to described standby wireless packet gateway and use query requests; Described standby wireless packet gateway sends idle address information to described master with packet radio gateway.
In embodiments of the present invention, described packet radio gateway specifically can be PGW, GGSN (Gateway GPRS SupportNode, Gateway GPRS Support Node, GPRS, General Packet Radio Service, GPRS), PDSN (Packet Data Serving Node, packet data serving node), ASN-GW (Access Service NetworkGateway, access service network gateway), PDG (Packet Data Gateway, packet data gateway) etc.
Below in conjunction with accompanying drawing the specific implementation of the embodiment of the invention in actual application is described in detail.
Application Example one
In system as shown in Figure 1, comprise a plurality of PGW among the PGW POOL (PGW resource pool), each PGW divides a plurality of address pool, the PGW that has one section identical address pond backups each other, for example PGW1 and PGW2 shared address pond 1, therefore described PGW1 and the PGW2 PGW that backups each other, PGW2 and PGW3 shared address pond 2, therefore described PGW2 and the PGW3 PGW that backups each other.
At UE (User Equipment, subscriber equipment) in the attaching process, when setting up the PDN connection, the master searches corresponding standby PGW or standby PGW tabulation with PGW in PGW POOL (PGW resource pool), and notifies mobile management network element with the information of described standby PGW or standby PGW tabulation in default bearer foundation responds.Its specific implementation process can comprise the steps: as shown in Figure 2
Step 11, UE sends Attach Request message to mobile management network element, wherein, at GERAN/UTRAN (GSM EDGE Radio Access Network/universal land radio access web) network, described mobile management network element is SGSN (Serving GPRSSupport Node, Serving GPRS Support Node), at EUTRAN (the UMTS wireless access network of evolution, UMTS UniversalMobile Telecommunications System, universal mobile telecommunications system) network, mobile management network element is MME (Mobility Management Entity, a mobile management entity);
Step 12, UE and mobile management network element and HSS (Home Subscriber Server, home network server) carry out authentication operations;
Executing location is upgraded and insertion subscription data flow process between step 13, mobile management network element and the HSS, the concrete operations mode can be, in HSS, HSS is inserted into the subscription data of UE in the mobile management network element simultaneously with the address registration of mobile management network element;
Step 14, mobile management network element obtains the subscription data of described UE, according to wherein the signatory main PGW that uses of default APN selection of UE (should be with among the embodiment, selecting the PGW2 in the system shown in Figure 1 is the main PGW that uses), and the address that obtains described PGW2, send then and create the default bearer request message carries out default PDN connection to SGW establishment, carry the PGW2 address in the establishment default bearer request message that described mobile management network element sends, EPS bearer ID information such as (Evolved Packet Systembearer Identity, the grouping system bearing identifications of evolution);
Step 15, SGW are the newly-built context of described UE in EPS carrying table, send to described PGW2 according to the PGW2 address in the establishment default bearer request message of described mobile management network element transmission simultaneously and create the default bearer request message, carry information such as SGW address, SGW user's face TEID (Tunnel EndpointIdentifier, Tunnel End Point Identifier) and SGW chain of command TEID in the establishment default bearer request message that described SGW sends;
Step 16, described PGW2 return and create the default bearer response message to SGW, carry PGW2 address, PGW2 chain of command TEID, PGW2 user's face TEID, EPS bearerID and information such as standby PGW information or standby PGW list information in the establishment default bearer response message that described PGW2 sends, wherein, the address that described standby PGW information or standby PGW list information can be standby PGW or another name or the like are used to discern the identification information of described standby PGW, are obtained in the PGW resource pool by PGW2 (the main PGW that uses);
Step 17, SGW return and create the default bearer response message to mobile management network element, carry SGW address, SGW user's face TEID, SGW chain of command TEID and described standby PGW information or standby PGW list information in the establishment default bearer corresponding message that described SGW sends;
Step 18, mobile management network element obtain the establishment default bearer response message that sends according to SGW and obtain the information of described standby PGW or the information of standby PGW tabulation, and send to adhere to and accept message to UE;
If the subscription data of UE allows with non-3GPP intercommunication, the then following operation of continuation execution: mobile management network element sends and upgrades location request message to HSS, carries the APN and PGW2 (the main PGW that the uses) address information of the default PDN connection of UE use in the message; HSS preserves APN and the PGW2 address information that UE uses, and home position upgrades response message to mobile management network element.
In the above-mentioned processing procedure, if desired with network in PCRF (Policy and Charging Rule Function, the "Policy and Charging Rules Function entity) obtains PCC (Policy Control and Charging alternately, policy control and charging) rule, can also comprise the steps: between step 15 and step 16 that then described PGW2 obtains default PCC rule by described PCRF.
The information of the above-mentioned standby PGW that obtains can be the information of all standby PGW of the described main PGW of using correspondence, also can be the standby PGW information corresponding with address pond, UE address.
After the operating process that the above-mentioned UE of process adheres to, Mobility Management Entity has obtained corresponding standby PGW information or the standby PGW list information of PGW2 (the main PGW that uses), then in follow-up operating process, if described PGW2 breaks down or with the link path of described PGW2 when unavailable, Mobility Management Entity can be the correct standby PGW that selects of UE according to the standby PGW information of obtaining.For example, in system shown in Figure 1, address pond, UE address is an address pool 1, if the standby PGW information of obtaining only is the information of the PGW1 of address pool 1 correspondence, then selecting PGW1 is standby PGW, if the information that the standby PGW information of obtaining is PGW1 and PGW3, then need further to judge whether comprise address pool 1 among described PGW1 and the PGW3, owing to comprise address pool 1 among the PGW1, therefore select described PGW1 as standby PGW, and the user switched to continue as UE service (the IP address of UE is constant) on the standby PGW, follow-up when PGW2 recovers normal use, then still adjust PGW2 as current PGW for the UE service, PGW1 is standby PGW.
By foregoing description as can be known, Application Example one has provided obtains standby PGW or standby PGW tabulation in the UE attaching process, and carries out the method that primary, spare PGW switches, and has realized that equipment redundancy reaches the disaster tolerance based on PGW POOL, has improved professional stability.
Application Example two
Application Example of the present invention has provided sets up the implementation of obtaining standby PGW information or standby PGW list information in the process a kind of the connection at PDN, and its specific implementation can comprise the steps: as shown in Figure 3
Step 21, UE initiate PDN connection request message to mobile management network element, carry APN and PDN Address Allocation information such as (PDN address assignment) in the described PDN connection request message.
Step 22, mobile management network element are selected the main PGW that uses according to the APN that carries in the described PDN connection request message, and the address that obtains the described main PGW of using, send then and create the default bearer request message, carry main in the establishment default bearer request message that described mobile management network element sends with information such as PGW address and EPS bearer ID to the establishment that SGW carries out default PDN connection;
Step 23, SGW are the newly-built context of described UE in EPS carrying table, create the default bearer request message according to main the transmission with PGW to described master in the establishment default bearer request message of described mobile management network element transmission simultaneously, carry information such as SGW address, SGW user's face TEID and SGW chain of command TEID in the establishment default bearer request message of described SGW transmission with the PGW address;
Step 24, described master return with PGW and create the default bearer response message to SGW, carry the master in the establishment default bearer response message of described master with the PGW transmission and use PGW user's face TEID, EPSbearer ID and information such as standby PGW information or standby PGW list information with PGW address, the main PGW of using chain of command TEID, master, wherein, the address that described standby PGW information or standby PGW list information can be standby PGW or another name or the like are used to discern the identification information of described standby PGW, are obtained in the PGW resource pool with PGW by main;
Step 25, SGW return and create the default bearer response message to mobile management network element, carry SGW address, SGW user's face TEID, SGW chain of command TEID and described standby PGW information or standby PGW list information in the establishment default bearer corresponding message that described SGW sends;
Step 26, mobile management network element send carrying and set up request message to eNodeB, and described carrying is set up and comprised also in the request message that PDN accepts message;
Carry out RRC (Radio Resource Control, radio resource control) connection between step 27, eNodeB and the UE and reshuffle, eNodeB accepts forwards with the PDN that receives and gives UE in described RRC connection reconfiguration course;
Step 28, eNodeB send carrying and set up response message to mobile management network element, and the user's face TEID that comprises eNodeB address, eNodeB in the response message and the chain of command TEID of eNodeB are set up in the carrying that described eNodeB sends.
Step 29, mobile management network element add user's face TEID of described eNodeB address, eNodeB among the SGW to, to upgrade described information.
If the subscription data of UE allows with non-3GPP intercommunication, the then following operation of continuation execution: mobile management network element sends and upgrades location request message to HSS, carries the APN and the main PGW address information of using of the default PDN connection of UE use in the message; HSS preserves APN and the main PGW address information of using that UE uses, and home position upgrades response message to mobile management network element.
In the above-mentioned processing procedure, obtain the PCC rule alternately from PCRF if desired, can also comprise the steps: between step 23 and step 24 that then described master obtains default PCC rule with PGW by described PCRF.
The information of the above-mentioned standby PGW that obtains can be the information of all standby PGW of the described main PGW of using correspondence, also can be the standby PGW information corresponding with address pond, UE address.
Through above-mentioned set up the operating process that PDN connects after, Mobility Management Entity has obtained described main standby PGW or standby PGW tabulation with PGW, then in follow-up operating process, if described master breaks down with PGW or with described main link path with PGW when unavailable, Mobility Management Entity can be selected standby PGW for it according to address pond, UE address, and switch to and continue as UE service (the IP address of UE is constant) on the described standby PGW, described standby PGW can be the described standby PGW that described Mobility Management Entity obtains, and also can be that described Mobility Management Entity is selected a standby PGW from the standby PGW tabulation of obtaining.Wherein, if the standby PGW information of obtaining only is the information of the standby PGW of address pond, UE address correspondence, then select described standby PGW, if the standby PGW information of obtaining is the information of all standby PGW of the main PGW of using correspondence, then need further to judge whether described standby PGW comprises described address pool, and select to comprise the standby PGW of described address pool.
In addition, in the step 25 of above-mentioned processing procedure, SGW sends in the establishment default bearer response message of MME can also not comprise standby PGW or standby PGW list information, promptly obtain the information of described standby PGW information or standby PGW tabulation by SGW, break down or with described main link path when unavailable with PGW when main with PGW, select standby PGW according to address pond, UE address for it by SGW, and switch to and continue as UE service (the IP address of UE is constant) on the standby PGW, and will described standby PGW be adjusted into to lead and use PGW.
By foregoing description as can be known, Application Example two has provided a kind of PDN connection based on PGW POOL and has set up the specific implementation of obtaining standby PGW information in the process, mobile management network element or SGW obtain standby PGW information or standby PGW list information in this process, thereby when the master is broken down with PGW, can go up to realize disaster tolerance by switching to standby PGW, improve the stability of system.
Application Example three
Should describe the method for obtaining standby GGSN or standby GGSN tabulation in MS (Mobile Station, travelling carriage) PDP activation with embodiment, its specific implementation can comprise the steps: as shown in Figure 3
Step 31, MS initiate to activate the PDP request message to SGSN, comprise PDP type, pdp address, APN and Qos information such as (Quality of Service, service quality) in the described activation PDP request message;
Step 32, SGSN send establishment PDP Context request message and use GGSN to main, comprise information such as PDP type, pdp address and APN in the described PDP Context request message;
Step 33, main returning to SGSN with GGSN are created the PDP Context response message, comprise pdp address, main TEID, main in the described establishment PDP Context corresponding message with the TEID of GGSN chain of command, Qos and the standby GGSN information or the standby GGSN list information of negotiation with GGSN user's face, wherein, the master obtains described standby GGSN or standby GGSN tabulation with GGSN in GGSN POOL, main with GGSN and the shared one section identical address pool of standby GGSN, SGSN receives according to the main message that sends with GGSN knows described main standby GGSN information with GGSN;
Step 34, UE and RAN (Radio Access Network, wireless access network) carry out radio bearer and set up, and carry out the Iu carrying between RAN side and the SGSN and set up, and set up thereby finish the RAB carrying;
Step 35, SGSN send activation PDP and accept message to MS, and described activation PDP accepts to comprise in the message parameters such as PDP type, pdp address, Qos;
If find in the above-mentioned steps 34 that Qos changes, and then also comprises the steps: between step 34 and step 35
SGSN need send and upgrade the PDP Context request message to GGSN, upgrades Qos; GGSN sends renewal PDP Context response message and confirms new Qos parameter to SGSN.
The information of the above-mentioned standby GGSN that obtains can be the information of all standby GGSN of the described main GGSN of using correspondence, also can be the standby GGSN information corresponding with address pond, MS address.If the standby GGSN information of obtaining only is the information of the standby GGSN of address pond, MS address correspondence, then when switching primary, spare GGSN, select described standby GGSN, if the standby GGSN information of obtaining is the information of all standby GGSN of the main GGSN of using correspondence, then when switching primary, spare GGSN, need further judge whether described standby GGSN comprises described address pool, and select to comprise the standby GGSN of described address pool.
Through above-mentioned PDP activate handle after, mainly break down or when unavailable when SGSN surveys to detect by the path with the main path that is connected with GGSN with GGSN, can be immediately the service of MS be switched on the standby GGSN, realize disaster tolerance protection.Because the described standby GGSN that chooses and main with the shared sector address pond of GGSN (this address pool is address pond, MS address), therefore can guarantee that the IP address of MS does not change, thereby compare with GGSN disaster tolerance technology scheme of the prior art, for the MS that handles the dynamic IP addressing distribution, in the GGSN handoff procedure, need not to carry out again activation, can reduce route oscillation, shorten because the time delay that service disconnection causes.
Application Example four
In Application Example of the present invention, the active and standby PGW tabulation of configuration on mobile management network element or SGW in advance, perhaps, the active and standby GGSN tabulation of configuration on SGSN in advance.Described active and standby PGW (or active and standby GGSN) tabulation is used to describe the corresponding relation between each PGW (or GGSN), the PGW (or GGSN) that specifically can be a shared sector address pond is active and standby each other, described main with PGW (or the main GGSN that uses) and the shared sector address pond of standby PGW (or standby GGSN), if described master divides a plurality of address fields with PGW, then different address fields can corresponding different standby PGW, in addition, same address field also can corresponding a plurality of standby PGW.When leading with PGW (or the main GGSN that uses) when breaking down, described mobile management network element or SGW (or SGSN) can select the standby PGW (or standby GGSN) of station address address pond correspondence and toggle path to continue as the user according to the active and standby PGW (or active and standby GGSN) of described configuration tabulation service is provided, and the main frame of described standby PGW (or GGSN) issue simultaneously is routed to the descending route that bearer network upgrades the user.In the said process, if disposed active and standby PGW tabulation on the SGW, then described SGW also needs PGW address or another name after upgrading are notified to mobile management network element after toggle path finishes.
Above-mentioned Application Example four has provided another and has obtained standby PGW information or standby GGSN information, and then realizes the implementation of disaster tolerance.By foregoing description as can be seen, because described standby PGW (or standby GGSN) and the main shared sector address pond of PGW (or the main GGSN that uses) of using, therefore guaranteed in the process of switching PGW (or GGSN), not change user's IP address, be that the user does not need to activate again, therefore can reduce the time delay that causes owing to service disconnection, and reduce network risks.
Application Example five
Application Example of the present invention has provided the specific implementation of a kind of PGW of switching.When PGW need safeguard or be about to break down, notify all mobile management network elements that are associated to carry out the redirect operation of PGW, specifically can be, PGW is with the correspondence relationship information of address pool and standby PGW (the perhaps corresponding relation of APN and standby PGW, the perhaps corresponding relation of PDN hyphen and standby PGW, or the like can represent the correspondence relationship information of a sector address pond and standby PGW) be notified to mobile management network element, mobile management network element is selected the standby PGW of address pond, the address correspondence of UE according to described correspondence relationship information, and finish the redirect operation of PGW, be about to the last UE that activates of fault PGW and move on the standby PGW, realized disaster tolerance and load sharing.The specific implementation of above-mentioned processing procedure can comprise the steps: as shown in Figure 5
Step 51, master send redirect command Redirect Command to the SGW that is associated with PGW, comprise the relation table (also can be other relation tables of representing a sector address pond and standby PGW) of APN and standby PGW among the described RedirectCommand;
After step 52, described SGW receive the redirect command of PGW, transmit this order and give related MME;
Step 53, mobile management network element is that UE selects new SGW, send establishment default bearer request message to described new SGW, default bearer is set up in request, and the relation table that comprises in the redirect command according to former SGW transmission, select the standby PGW of address pond, UE address correspondence, carry described standby PGW address in the establishment default bearer request message that described mobile management network element sends, IMSI (International Mobile Subscriber Identity, international mobile subscriber identity), MSISDN (The Mobile Station ISDN number, mobile subscriber's international number), information such as EPS bearer ID and PDN address, wherein, to carry the PDN address be consistent in order to ensure the original PDN address of described PDN address and UE creating the default bearer request message;
Step 54, described new SGW be according to described standby PGW address, create and described standby PGW between carrying;
Step 55, described new SGW send creates the default bearer response message to described mobile management network element, carries the TEID of Tunnel Identifier, described new SGW address, described new SGW user's face, the TEID and the EPS bearer ID of described new SGW chain of command in the establishment default bearer response message that described new SGW sends;
Step 56, since the service SGW of UE change, so the resource of MME deletion UE on former SGW, in addition, can also delete UE described master with the resource on the PGW;
If user's subscription data allows this user and non-3GPP intercommunication, then can also continue to carry out following operation: upgrade PGW and the APN information of UE in HSS.
Above-mentioned steps 53 to upgrade UE in HSS PGW and the process of APN information can repeat, all finish described PGW switch operating up to the user of same address pool.
After above-mentioned processing procedure is finished, also need to carry out following operation: standby PGW issue main frame route segment is given Service Gateway, can avoid each UE all to issue a main frame route like this.
In the step 53 of above-mentioned processing procedure, if do not comprise the PDN address in the establishment bearing request message that described mobile management network element sends, consistent in order to ensure the PDN address that described PDN address and UE are original, then described main with PGW as DHCP (Dynamic Host Configuration Protocol, DHCP) client by user ID to Dynamic Host Configuration Protocol server acquisition request PDN address.
Application Example five of the present invention has provided a kind of by switching the specific implementation process that PGW realizes disaster tolerance, by foregoing description as can be known, owing in the process of switching PGW, guaranteed that address pond, UE address is constant, therefore UE need not to change the IP address when changing PGW, promptly do not need the process that activates again, therefore reduced network risks, reduced because the time delay that service disconnection causes.
Application Example six
Application Example six of the present invention has provided another and has switched the specific implementation of PGW.When PGW need safeguard or be about to break down, notify all mobile management network elements that are associated to carry out the redirect operation of PGW, specifically can be, PGW is with the correspondence relationship information of address pool and standby PGW (the perhaps corresponding relation of APN and standby PGW, the perhaps corresponding relation of PDN hyphen and standby PGW, or the like can represent the correspondence relationship information of a sector address pond and standby PGW) be notified to mobile management network element, mobile management network element is selected the standby PGW of address pond, the address correspondence of UE according to described correspondence relationship information, and finish the redirect operation of PGW, be about to the last user who activates of fault PGW and move on the standby PGW, realized disaster tolerance and load sharing.The specific implementation of above-mentioned processing procedure specifically can comprise the steps: as shown in Figure 6
Step 61, master send redirect command Redirect Command to the SGW that is associated with PGW, carry the relation table (also can be other relation tables of representing a sector address pond and standby PGW) of APN and standby PGW among the described RedirectCommand;
After step 62, described SGW receive the redirect command of PGW, transmit this order give relevant mobile management network element;
Step 63, mobile management network element send the bearer update request message to SGW, and select standby PGW according to the redirect command that described SGW sends, the method of the concrete standby PGW of selection is identical with the method for step 53 in the Application Example five, carries user ID and standby PGW address, APN and EPS bearer ID in the described bearer update request message;
Step 64, SGW carry out load creating and renewal according to bearer update request message and the described standby PGW that mobile management network element in the step 63 sends;
Step 65, SGW send the bearer update response to mobile management network element, notify described mobile management network element path to switch and finish;
If user's subscription data allows this user and non-3GPP intercommunication, then continue to carry out following operation: upgrade PGW and the APN information of user in HSS.
Above-mentioned steps 63 to upgrade the user in HSS PGW and the operation of APN information can repeat repeatedly, the user in same address pool all finishes the switching of PGW.
After above-mentioned processing procedure was finished, described standby PGW issue main frame route segment or main frame route were given Service Gateway.
Application Example six of the present invention has provided another by switching the specific implementation process that PGW realizes disaster tolerance, the implementation that provides with Application Example five compares, and the technical scheme that Application Example six of the present invention provides need not can finish the handoff procedure of PGW for the user selects new SGW.
Application Example seven
Application Example seven of the present invention has provided the third and has switched the specific implementation of PGW.Wherein, need safeguard or during fault, described master does redirect operation with PGW notice SGW, after the SGW toggle path finishes, gives MME with standby PGW address notification with PGW main.As shown in Figure 7, its specific implementation can comprise the steps:
Step 71, master send redirect command Redirect Command to the SGW that is associated with PGW, comprise the relation table (also can be other relation tables of representing a sector address section and standby PGW) of APN and standby PGW in the described redirect command;
Step 72, SGW are selected the standby PGW of address pond, UE address correspondence and the carrying of foundation and described standby PGW according to described mapping table;
Step 73, SGW transmission renewal context message to finish updating context, comprise information such as described standby PGW address, APN, EPS Bearer ID and user ID to MME in the described renewal context message;
If user's subscription data allows this user and non-3GPP intercommunication, then proceed following operation: upgrade PGW and the APN information of user in HSS.
Above-mentioned steps 72 to upgrade the user in HSS PGW and the operation of APN information can repeat, all finish the switching of PGW up to the user of same address pool.
After above-mentioned processing procedure was finished, described standby PGW issue main frame route segment or main frame route were given Service Gateway, can avoid each user all to issue a main frame route like this.
Application Example seven of the present invention has provided a kind of by switching the specific implementation process that PGW realizes disaster tolerance, by foregoing description as can be known, owing in the process of switching PGW, guaranteed that standby PGW has address pond, UE address, therefore UE need not to change the IP address when changing PGW, promptly do not need the process that activates again, therefore reduced network risks, reduced because the time delay that service disconnection causes.
Application Example eight
After the master was available with the packet radio gateway recovery, standby wireless packet gateway also needed to give back IP the address, guarantees not duplicate allocation IP address of primary and backup packet radio gateway.Application Example of the present invention eight is an example with PGW, has provided a kind of implementation method, and its specific implementation can be divided into deletion PDN carrying and give back the IP address two processes, and wherein, the process of deletion PDN carrying can comprise the steps: as shown in Figure 8
Step 81, UE send PDN and discharge request message, and described PDN discharges in the request message and carries LBI (Linked EPSBearer ID, related EPS bearing identification), and described LBI is the default bearer parameter with described PDN association;
Step 82, MME send the deleting bearing request message to SGW, carry the TEID of MME user's face, the TEID and the LBI of MME chain of command in the described deleting bearing request message;
Step 83, SGW send deleting bearing request message to main with PGW according to TEID sign and LBI parameter, and the TEID, SGW chain of command that comprise SGW user's face in the described deleting bearing request message are to TEID and LBI;
Step 84, main mutual with PGW and PCRF, described master is deleted with the EPS carrying of PGW notice PCRF response;
Step 85, master reply the deleting bearing response message with PGW and give SGW;
Step 86, SGW and standby PGW (the main PGW that uses before promptly switching), PCRF are mutual, delete standby PGW and go up the carrying that corresponding PDN connects, specifically can be SGW sends the deleting bearing request message to standby PGW, and the TEID, SGW chain of command that comprise SGW user's face in the described deleting bearing request message are to TEID and LBI; Described standby PGW and PCRF are mutual, and the corresponding EPS carrying of notice PCRF is deleted; Standby PGW replys the deleting bearing response message and gives SGW; Described standby PGW issue main frame route is upgraded descending route;
Step 87, SGW reply the deleting bearing response message and give MME;
Step 88, MME initiate the deleting bearing message related to resources to eNodeB, deletion eNodeB goes up the radio bearer resources relevant with described PDN, also carry PDN in the described deleting bearing message related to resources and disconnect response, eNodeB transmits described deleting bearing message related to resources to UE, PDN is disconnected response carry to UE.
If user's subscription data allows this user and non-3GPP intercommunication, then need to upgrade PGW and the APN information of user in HSS.
In the above-mentioned processing procedure, do not exist sequential successively between step 83 ~ 85 and the step 86, i.e. the main carrying with PGW of deletion does not have sequencing with the load bearing process of the standby PGW of deletion on sequential.
In above-mentioned steps 82, can also carry main PGW address and the standby PGW address used in the described deleting bearing request message, inform that by described active and standby PGW address SGW need delete active and standby PGW and go up the carrying that corresponding PDN connects correspondence.In addition, if the main SGW of PGW and standby PGW correspondence that uses is inequality, then MME sends the deleting bearing request messages to two SGW respectively.
After finishing PDN deleting load-bearing process, upward original address of activating of standby PGW or address pool are by deexcitation, at this moment, the address or the address pool that discharge are notified to the main PGW that uses, to realize giving back of IP address, its specific implementation process is: standby PGW transmission address (or address pool) release is notified to the master and uses PGW, carries d/d address (or address pool) in the described message.Then described address (or address pool) is available on leading with PGW, and is unavailable on standby PGW.
By foregoing description as can be known, the embodiment of the invention has provided gives back IP the address, guarantee the not specific implementation of duplicate allocation IP address, for the user of dynamic address allocation, after switching packet radio gateway, need not to change the IP address, thereby reduced network risks, avoided because the time delay that service disconnection causes.
Application Example nine
When the user need be switched MME or SGSN owing to position change, new MME or SGSN obtained the tabulation of packet radio gateway main and standby relation.With PGW is example, and described handoff procedure specifically can comprise the steps: as shown in Figure 9
Step 91, UE reporting measurement reports are given the source Access Network, and the source Access Network is initiated switching flow according to the measurement report decision of UE, promptly sends handoff request message to source MME (or source SGSN);
Step 92, source MME (or source SGSN) select target MME (or target SGSN), and to described target MME (or SGSN) transmission forwarding handoff request message, carry the contextual information of UE in the forwarding handoff request message that described source MME (or source SGSN) sends, comprise main with PGW address, main with PGW user's face TEID, main with PGW chain of command TEID, SGW address, SGW user's face TEID and SGW chain of command TEID, main PGW also comprises standby PGW information (address or another name), so that can realize disaster tolerance after breaking down.
Step 93, target MME (or target SGSN) distribute context for the user, and, carry user's face TEID of upstream data, the chain of command TEID and the upstream data address of upstream data in the handoff request message that described target MME (or target SGSN) sends to target access network transmission handoff request message;
Step 94, target access network send handover request ack message to target MME (or target SGSN);
Step 95, target MME (or SGSN) send and transmit handover request ack message to source MME (or SGSN);
Step 96, source MME (or SGSN) send switching command to the source Access Network;
Step 97, source Access Network send to UE with described switching command, and indication UE is linked into target access network;
Step 98, UE switch to target access network, upgrade corresponding bearer context, to continue original business;
Step 99, tracking area change, and UE initiating updating of tracking area flow process is distributed a new GUTI (GloballyUnique Temporary Identity, global unique temporary identity) to UE.
By foregoing description as can be known, when MME or SGSN switch, target MME or SGSN can obtain main with packet radio gateway information and corresponding standby wireless packet gateway information, when the master breaks down with packet radio gateway, thereby still can realize disaster tolerance by switching packet radio gateway.
Application Example ten
Application Example ten of the present invention has provided when the user enters a new tracking area or route district, and based on the processing procedure of active and standby packet radio gateway, its specific implementation specifically can comprise the steps: as shown in figure 10
Step 101, UE carry user's overall temporary mark to its place Access Network initiating updating of tracking area (or Routing Area Update) request message in described tracing section updating (or Routing Area Update) request message;
Step 102, Access Network are that described UE selects a new MME (or new SGSN), and TAU (or RAU) request message of UE transmission is transmitted to described new MME (or new SGSN), and target MME (or target SGSN);
Step 103, described target MME (or target SGSN) are worth source MME (or source SGSN) according to the overall temporary mark of UE, concurrent serve hereinafter request message to described source MME (or source SGSN) to obtain the contextual information of UE;
Step 104, source MME (or source SGSN) send context response information to target MME (or target SGSN), the contextual information that comprises UE in the described context response information, this UE contextual information comprises: the user's face TEID of bearer context, MM Context, SGW signaling address UE and the chain of command TEID of UE, main PGW also has relevant standby PGW information or PGW list information, so that can realize disaster tolerance after breaking down;
Step 105, target MME (or target SGSN) carry out verification process;
Step 106, target MME (or target SGSN) send context acknowledge message to source MME (or source SGSN);
Step 107, target MME (or target SGSN) upgrade UE contextual information among the SGW;
Step 108, target MME (or target SGSN) upgrade MME (or SGSN) information of UE among the HSS;
Step 109, target MME (or target SGSN) send TAU (or RAU) and accept message to UE;
Step 1010, UE send TAU (or RAU) and finish message to target MME (or target SGSN).
By foregoing description as can be known, when the user enters a new TA district or RA district, carry out the switching of MME or SGSN for the user, target MME or SGSN can obtain main with packet radio gateway information and corresponding standby wireless packet gateway information, when the master breaks down with packet radio gateway, thereby still can realize disaster tolerance by switching packet radio gateway.
Application Example 13
Application Example 13 of the present invention provided main with main with the flow process of the user equipment migration on the P-GW to the standby P-GW, when the master is unavailable with packet radio gateway, main as described with packet radio gateway break down, load balancing, when transshipping, needing maintenance, load migration or path failure occurring, need will lead with the user equipment migration on the P-GW to standby P-GW, the master sends redirect request to S-GW with P-GW, and S-GW sends to MME with redirect request.MME initiates to set up the backup carrying between S-GW and standby P-GW, do not transmit data this moment.When the master is redirected with last UE in the P-GW address pool, in redirect request message, carries and finish sign, and notify all relevant MME, S-GW to be redirected and finish.MME upgrades to standby carrying main with carrying, and deletes the former main beared information of use, by the user with the information updating of the P-GW on the HSS for backing up P-GW.S-GW initiates to activate the carrying that connects standby all backups of P-GW, and deletion connects the carrying of main P-GW.P-GW issues the main frame routing update to outside PDN, and begins to transmit the P-GW information on data and the renewal PCRF.Referring to accompanying drawing 13, specific as follows:
Step 131, master send redirect request message to S-GW with P-GW, wherein, comprise standby P-GW address and bearer context container in the redirect request message, can also comprise user ID in the redirect request message and/or be redirected and identify, the bearer context container is mainly in order to allow standby P-GW reuse main bearer context information with P-GW, this container comprises Qos, PCC rule, charge information and DHCP information etc., so that standby P-GW utilizes and mainly creates the backup carrying with the information of PGW, the saving Internet resources have also reduced carrying switching time; Be redirected to identify and represent that the master goes up being redirected to of UE with P-GW and backs up P-GW; User ID can be IMSI; Be example to comprise standby P-GW address, bearer context container and user ID in the redirect request message in the present embodiment;
Step 132, S-GW are known the migration of P-GW according to redirect request message, and preserve standby P-GW address information, and S-GW sends to redirect request message the MME at UE place;
Step 133, MME preserve user-dependent contextual information and standby P-GW address information according to described redirect request message, create the backup bearer context, and send establishment backup bearing request message to S-GW, wherein comprise standby P-GW address, user ID, bearer context container in the establishment backup bearing request message;
Step 134, S-GW create the backup bearer context, for the backup carrying distributes new TEID, send and create the backup bearing request message to standby P-GW;
Step 135, standby P-GW create the backup bearer context, and for backing up carrying distribution T EID, send and create the backup bearing response message to S-GW, wherein create the TEID information that the backup bearing response message comprises control plane address, user's face address and the carrying of standby P-GW, this moment, the user face data of UE was still used transmission in the carrying the master;
Step 136, S-GW send and create the backup bearing response message to MME, MME safeguards the relevant bearer context information of backup P-GW, wherein build backup and comprise user ID, standby P-GW address information and TEID in the bearing response message, be specially: user's face address of the control plane address of user ID, standby P-GW and chain of command TEID, standby P-GW and user's face TEID;
Step 137, MME send to be redirected and finish message to S-GW, and notice S-GW is redirected and finishes, and wherein are redirected to finish to comprise user ID in the message, with which UE of notice S-GW have finished and have been redirected;
Step 138, S-GW send to be redirected and finish message message to P-GW, are redirected with notice P-GW and finish;
Step 139, P-GW backup on the standby P-GW up to the carrying with all UE in the same address field all the other UE repeated execution of steps 131-steps 138 of same address field.
Step 1310, P-GW send redirect request message to all relevant S-GW, P-GW deletes the information of all UE of this address field, comprise in the described redirect request message message to be redirected and finish sign, main will the finishing with last UE on the P-GW of expression is redirected to standby P-GW;
Step 1311, S-GW transmit redirect request message to all relevant MME, wherein comprise main with P-GW address, standby P-GW address, the redirected sign of finishing in the redirect request message;
Step 1312, MME obtain be redirected finish sign after, the backup bearer context that standby P-GW is relevant switches to main bearer context, and deletes former master with the relevant bearer context of P-GW;
Step 1313, S-GW send and activate the backup bearing request message to standby P-GW, wherein activate to comprise the main P-GW address of using in the backup bearing request message;
After step 1314, standby P-GW received message, main frame route network segment information was promptly upgraded in the routing update of issue main frame in PDN;
Step 1315, P-GW return to S-GW and activate the backup bearing response message, and this moment, S-GW and standby P-GW began to transmit user face data in carrying;
Step 1316, MME send to be redirected and finish message to S-GW.
Step 1317, S-GW send to be redirected and finish message to P-GW.
Step 1318, MME begin to upgrade the P-GW information of the carrying of each user on the HSS.
P-GW information in the PCC rule of the carrying on step 1319, the standby P-GW renewal PCRF, when follow-up business need issue the PCC rule alternately, PCRF finished carrying with up-to-date PCC rule downloading to standby PGW and sets up or revise.
When not comprising user ID in the redirect request message in the above-mentioned flow process, MME can decide those users of migration in its sole discretion according to presetting strategy, wherein presets in the strategy to comprise parameters such as User Status, User Priority, service priority.
Application Example 11
After the master breaks down with packet radio gateway, the information (as address information) of obtaining standby wireless packet gateway can also obtain by the method for DNS inquiry, concrete querying method can be to resolve the information that APN obtains described standby wireless packet gateway, perhaps resolve APN+ master and obtain the information of described standby wireless packet gateway with the packet radio gateway address, perhaps resolve the information of obtaining described standby wireless packet gateway with the packet radio gateway address of leading, perhaps resolve the main information of obtaining described standby wireless packet gateway with the another name of packet radio gateway.
The all or part of step of realization said method embodiment can be finished by the relevant hardware of program command, and aforesaid program can be stored in the computer read/write memory medium, and this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Application Example 12
The embodiment of the invention also provides a kind of packet data network gateway device, is used for subscriber equipment is linked into packet data network, it is characterized in that, its structure as shown in figure 11, the specific implementation structure can comprise:
Packet radio gateway is selected module 111, be used for when main with packet radio gateway unavailable (main as described with packet radio gateway break down, load balancing, overload, needs maintenance or path failure appears) time, select described main standby wireless packet gateway with the packet radio gateway correspondence, described standby wireless packet gateway has one section identical address pool with main packet radio gateway;
Module 112 is set up in the path, being used for selecting the standby wireless packet gateway of module 111 selections to set up the path with described packet radio gateway is connected, concrete path is set up module 112 and is comprised the bearer context container that obtains described main usefulness packet radio gateway, send the module of described bearer context container to standby wireless packet gateway, so that standby wireless packet gateway is created context according to the bearer context container, the road can also comprise obtaining and is redirected the module finish sign through setting up module 112, so that standby wireless packet gateway is finished identification renewal main frame route according to described being redirected.
The described device of the embodiment of the invention can also comprise packet radio gateway acquisition module 113, described packet radio gateway acquisition module 113 specifically can comprise: first acquisition module 1131, be used at the subscriber equipment attaching process, perhaps set up in the grouped data network PDN connection procedure at subscriber equipment and network side, perhaps carry out obtaining in the packet data protocol (PDP) activating process information of one or more described standby wireless packet gateway at subscriber equipment, described standby wireless packet gateway is selected according to subscriber equipment with packet radio gateway by main; Perhaps, second acquisition module 1132 is used to obtain the information of the corresponding relation of presentation address pond that described master sends with packet radio gateway and standby wireless packet gateway, and obtains the information of described standby wireless packet gateway from the information of described corresponding relation; Perhaps, the 3rd acquisition module 1133 is used for when the service mobile management network element of subscriber equipment changes, and obtains the information of one or more described standby wireless packet gateway of source mobile management network element transmission; Perhaps, the 4th acquisition module 1134 is used for obtaining described main standby wireless packet gateway with the packet radio gateway correspondence by the standby between the packet radio gateway of configuration; Perhaps, the 5th acquisition module 1135 is used for obtaining with the relevant information of packet radio gateway by the described master of domain name supervising system dns resolution the information of described standby wireless packet gateway; Perhaps, the 6th acquisition module, be used for receive creating the default bearer response message or create PDP Context response message or redirect request message, from described establishment default bearer response message or create the PDP Context response message or redirect request message is obtained the information of described standby wireless packet gateway.
Among the invention described above embodiment, described packet radio gateway selects module specifically to be used for according to the information of the described standby wireless packet gateway of obtaining, selecting the standby wireless packet gateway in station address address pond when the master is unavailable with packet radio gateway.For example, if obtain the information of described standby wireless packet gateway in the information according to the corresponding relation of presentation address pond and standby wireless packet gateway, then can be the address address pond corresponding standby wireless packet gateway of subscriber equipment selection according to the corresponding relation of described address pool and standby wireless packet gateway with this subscriber equipment; If obtain the information of described standby wireless packet gateway,, therefrom be that subscriber equipment is selected the corresponding standby wireless packet gateway in address pond, address with this subscriber equipment then according to the information of described standby wireless packet gateway by other modes.
For preventing primary, spare packet radio gateway duplicate allocation IP address, the equipment that the embodiment of the invention provides also comprises release module, this module specifically can be used for discharging the described main carrying of using the identical address pool of packet radio gateway and described standby wireless packet gateway after the master is available with the recovery of radio block network extension.Wherein, the described master of described release with the operation of the carrying of the identical address pool of packet radio gateway and described standby wireless packet gateway specifically can be: (one) obtains main with the address of described packet radio gateway and the address of described standby wireless packet gateway; Discharge described main with packet radio gateway PDN carrying according to described main address with packet radio gateway; Discharge the PDN carrying of described standby wireless packet gateway according to the address of described standby wireless packet gateway, described PDN is carried as the PDN carrying of the identical address pool of described primary, spare packet radio gateway; Or use the identical address pool of packet radio gateway with the master in the described standby wireless packet gateway of (two) release; Or the described standby wireless packet gateway of (three) deexcitation.
The equipment that the invention described above embodiment provides, because can be according to the information of the standby wireless packet gateway of obtaining, when the master is unavailable with packet radio gateway, in time business is switched on the corresponding standby wireless packet gateway, therefore can reduce network risks, for the user provides better service.And, prevented effectively that therefore the situation of primary, spare packet radio gateway duplicate allocation IP address from taking place owing to can in time discharge the address pool resource of standby wireless packet gateway.
Application Example 14
The embodiment of the invention provides a kind of mobile management network element or service gateway entity, comprising: receiver module, be used to receive main with the wireless packet data networks gateway device send be equipped with use packet radio gateway information; Mobile management network element or service gateway entity, be used for according to the described main standby wireless packet gateway of described standby wireless packet gateway Information Selection with the packet radio gateway correspondence, setting up the path with the standby wireless packet gateway of described selection is connected, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway.
Application Example 15
The embodiment of the invention provides a kind of disaster tolerance system based on packet radio gateway, comprise: packet data network gateway device, be used for described packet data network gateway device when unavailable, according to the described main standby wireless packet gateway of the standby wireless packet gateway Information Selection of obtaining with the packet radio gateway correspondence, the standby wireless packet gateway information of described selection is sent to mobile management network element or service gateway entity, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway; Mobile management network element or service gateway entity are used for setting up the path with the standby wireless packet gateway of described selection and are connected.
Application Example 16
The embodiment of the invention provides a kind of disaster tolerance system based on packet radio gateway, comprise: packet data network gateway device, be used for described packet data network gateway device when unavailable, send standby wireless packet gateway information to mobile management network element or service gateway entity; Mobile management network element or service gateway entity, be used for according to the described main standby wireless packet gateway of described standby wireless packet gateway Information Selection with the packet radio gateway correspondence, setting up the path with the standby wireless packet gateway of described selection is connected, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway.
Application Example 17
The embodiment of the invention also provides a kind of disaster tolerance system based on packet radio gateway, its structure as shown in figure 12, the specific implementation structure can comprise:
Packet radio gateway choice device 121, be used for when main with packet radio gateway unavailable (main as described with packet radio gateway break down, load balancing, overload, needs maintenance or path failure appears) time, select described main standby wireless packet gateway with packet radio gateway, described standby wireless packet gateway has one section identical address pool with main packet radio gateway;
Path apparatus for establishing 122, the standby wireless packet gateway that is used for selecting with described packet radio gateway choice device 121 is set up the path and is connected.
In the system that the embodiment of the invention provides, described packet radio gateway choice device 121 specifically is used for when the master is unavailable with packet radio gateway, according to the information of the described standby wireless packet gateway of obtaining, select the standby wireless packet gateway in station address address pond.
Among the invention described above embodiment, after path described and described standby wireless packet gateway was set up, described standby wireless packet gateway was upgraded user's descending route by issue dynamic routing segment information, so can avoid each user all to issue a main frame route.
For preventing primary, spare packet radio gateway duplicate allocation IP address, in the system that the invention described above embodiment provides, can also comprise releasing device 123, described releasing device 123 specifically can be used for discharging the described main carrying of using the identical address pool of packet radio gateway and described standby wireless packet gateway after the master is available with the packet radio gateway recovery.Wherein, the operation of the carrying of the described main identical address pool with packet radio gateway and described standby wireless packet gateway of described release specifically: (one) obtains and leads with the address of described packet radio gateway and the address of described standby wireless packet gateway; Discharge described main with packet radio gateway PDN carrying according to described main address with packet radio gateway; Discharge the PDN carrying of described standby wireless packet gateway according to the address of described standby wireless packet gateway, described PDN is carried as the PDN carrying of the identical address pool of described primary, spare packet radio gateway; Or use the identical address pool of packet radio gateway with the master in the described standby wireless packet gateway of (two) release; Or the described standby wireless packet gateway of (three) deexcitation.Accordingly, behind described releasing device 123 complete operations, described standby wireless packet gateway sends the address pool information of its release to described master with packet radio gateway, and described master activates described address pool with packet radio gateway.
In addition, in the system that the invention described above embodiment provides, but recover the time spent with packet radio gateway as described disabled master, describedly mainly send address pool with packet radio gateway to described standby wireless packet gateway and use query requests; Described standby wireless packet gateway sends idle address information to described master with packet radio gateway.
In the system that the invention described above embodiment provides, because can be according to the information of the standby wireless packet gateway of obtaining, when the master is unavailable with packet radio gateway, in time business is switched on the corresponding standby wireless packet gateway, therefore can reduce network risks, for the user provides better service.And, prevented effectively that therefore the situation of primary, spare packet radio gateway duplicate allocation IP address from taking place owing to can in time discharge the address pool resource of standby wireless packet gateway.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (18)

1, a kind of disaster recovery method based on packet radio gateway is characterized in that, comprising:
When the master is unavailable with packet radio gateway, according to the described main standby wireless packet gateway with packet radio gateway of the standby wireless packet gateway Information Selection of obtaining, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway;
Setting up the path with described standby wireless packet gateway is connected.
2, method according to claim 1 is characterized in that, this method also comprises the process of described master with the information of the standby wireless packet gateway of packet radio gateway of obtaining:
In the subscriber equipment attaching process, perhaps set up in the grouped data network PDN connection procedure at subscriber equipment and network side, perhaps carry out in the packet data protocol (PDP) activating process at subscriber equipment, obtain the information of described standby wireless packet gateway, described standby wireless packet gateway is selected with packet radio gateway by main;
Perhaps,
Receive to create the default bearer response message or create PDP Context response message or redirect request message, from described establishment default bearer response message or create the PDP Context response message or redirect request message is obtained the information of described standby wireless packet gateway; Obtain the information of the corresponding relation of presentation address pond that described master sends with packet radio gateway and standby wireless packet gateway, and from the information of described corresponding relation, obtain the information of described standby wireless packet gateway;
Perhaps,
When the service mobile management network element of subscriber equipment changes, obtain the information of the described standby wireless packet gateway of source mobile management network element transmission;
Perhaps,
Obtain the described main information of using the standby wireless packet gateway of packet radio gateway by the standby between the packet radio gateway of configuration;
Perhaps,
Obtain the information of described standby wireless packet gateway with the relevant information of packet radio gateway by the described master of domain name supervising system dns resolution.
3, method according to claim 2 is characterized in that, obtains the described main information of using the standby wireless packet gateway of packet radio gateway by current for the user provides the mobile management network element of service or service gateway entity.
According to any described method of claim 1 ~ 3, it is characterized in that 4, the described master of described selection specifically comprises with the process of the standby wireless packet gateway of packet radio gateway:
According to the information of obtaining described standby wireless packet gateway, select the standby wireless packet gateway in user device address address pond.
5, according to any described method of claim 1 ~ 3, it is characterized in that this method also comprises:
Main with packet radio gateway recover available after, discharges the carrying of described main identical address pool with packet radio gateway and described standby wireless packet gateway;
Described standby wireless packet gateway sends the address pool information of its release with packet radio gateway to described master;
Described master activates described address pool with packet radio gateway.
6, method according to claim 5 is characterized in that, the described master of described release specifically comprises with the carrying of the identical address pool of packet radio gateway and described standby wireless packet gateway:
Obtain described main with the address of packet radio gateway and the address of described standby wireless packet gateway;
Discharge described main with packet radio gateway PDN carrying according to described main address with packet radio gateway;
Discharge the PDN carrying of described standby wireless packet gateway according to the address of described standby wireless packet gateway, described PDN is carried as the PDN carrying of the identical address pool of described primary, spare packet radio gateway.
7, according to any described method of claim 1 ~ 3, it is characterized in that this method also comprises:
When but described master recovers the time spent with packet radio gateway, describedly mainly send address pool with packet radio gateway to described standby wireless packet gateway and use query requests;
Described standby wireless packet gateway sends idle address information to described master with packet radio gateway.
According to the described method of claim 1 ~ 3, it is characterized in that 8, described and standby wireless packet gateway are set up the path and be connected specifically and comprise:
Obtain described main bearer context container with packet radio gateway, send described bearer context container to described standby wireless packet gateway, described standby wireless packet gateway is created context according to described bearer context container.
9, method according to claim 8 is characterized in that, described and standby wireless packet gateway are set up the path and be connected also and comprise:
Obtain to be redirected and finish sign, described standby wireless packet gateway is finished the routing update of sign issue main frame according to described being redirected.
According to the described method of claim 1 ~ 3, it is characterized in that 10, described method also comprises:
Packet radio gateway information in described standby wireless packet gateway update strategy and the charging rule functions equipment.
11, a kind of packet data network gateway device is used for subscriber equipment is linked into packet data network, it is characterized in that, comprising:
Packet radio gateway is selected module, be used for when the master is unavailable with packet radio gateway, according to the described main standby wireless packet gateway with the packet radio gateway correspondence of the standby wireless packet gateway Information Selection of obtaining, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway;
Module is set up in the path, is used for selecting the standby wireless packet gateway of module selection to set up the path with described packet radio gateway and is connected.
12, equipment according to claim 11 is characterized in that, described equipment also comprises the packet radio gateway acquisition module, and described packet radio gateway acquisition module specifically comprises:
First acquisition module, be used at the subscriber equipment attaching process, perhaps set up in the grouped data network PDN connection procedure at subscriber equipment and network side, perhaps carry out in the packet data protocol (PDP) activating process at subscriber equipment, obtain the information of described standby wireless packet gateway, described standby wireless packet gateway is selected according to subscriber equipment with packet radio gateway by main;
Perhaps,
Second acquisition module is used to obtain the information of the corresponding relation of presentation address pond that described master sends with packet radio gateway and standby wireless packet gateway, and obtains the information of described standby wireless packet gateway from the information of described corresponding relation;
Perhaps,
The 3rd acquisition module is used for when the service mobile management network element of subscriber equipment changes, and obtains the information of the described standby wireless packet gateway of source mobile management network element transmission;
Perhaps,
The 4th acquisition module is used for obtaining described main standby wireless packet gateway with the packet radio gateway correspondence by the standby between the packet radio gateway of configuration;
Perhaps,
The 5th acquisition module is used for obtaining with the relevant information of packet radio gateway by the described master of domain name supervising system dns resolution the information of described standby wireless packet gateway;
Perhaps,
The 6th acquisition module, be used for receive creating the default bearer response message or create PDP Context response message or redirect request message, from described establishment default bearer response message or create the PDP Context response message or redirect request message is obtained the information of described standby wireless packet gateway.
13, according to claim 11 or 12 described equipment, it is characterized in that, described packet radio gateway selects module specifically to be used for when the master is unavailable with packet radio gateway, according to the information of the described standby wireless packet gateway of obtaining, select the standby wireless packet gateway in user device address address pond.
14, according to claim 11 or 12 described equipment, it is characterized in that this equipment also comprises release module:
Be used for after the master is available with the recovery of radio block network extension, discharging the described main carrying of using the identical address pool of packet radio gateway and described standby wireless packet gateway.
According to claim 11 or 12 described equipment, it is characterized in that 15, described path is set up module and comprised the bearer context container that obtains described main usefulness packet radio gateway, sends the module of described bearer context container to described standby wireless packet gateway.
16, a kind of mobile management network element or service gateway entity is characterized in that, comprising:
Receiver module is used to receive main with wireless packet data networks gateway device transmission standby wireless packet gateway information;
Mobile management network element or service gateway entity, be used for according to the described main standby wireless packet gateway of described standby wireless packet gateway Information Selection with the packet radio gateway correspondence, setting up the path with the standby wireless packet gateway of described selection is connected, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway.
17, a kind of disaster tolerance system based on packet radio gateway is characterized in that, comprising:
Packet data network gateway device, be used for described packet data network gateway device when unavailable, according to the described main standby wireless packet gateway of the standby wireless packet gateway Information Selection of obtaining with the packet radio gateway correspondence, the standby wireless packet gateway information of described selection is sent to mobile management network element or service gateway entity, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway;
Mobile management network element or service gateway entity are used for setting up the path with the standby wireless packet gateway of described selection and are connected.
18, a kind of disaster tolerance system based on packet radio gateway is characterized in that, comprising:
Packet data network gateway device is used for described packet data network gateway device when unavailable, sends standby wireless packet gateway information to mobile management network element or service gateway entity;
Mobile management network element or service gateway entity, be used for according to the described main standby wireless packet gateway of described standby wireless packet gateway Information Selection with the packet radio gateway correspondence, setting up the path with the standby wireless packet gateway of described selection is connected, wherein, described standby wireless packet gateway has one section identical address pool with main with packet radio gateway.
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