CN105338563A - Fault detection method, gateway, user equipment and communication system - Google Patents
Fault detection method, gateway, user equipment and communication system Download PDFInfo
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- CN105338563A CN105338563A CN201510882383.4A CN201510882383A CN105338563A CN 105338563 A CN105338563 A CN 105338563A CN 201510882383 A CN201510882383 A CN 201510882383A CN 105338563 A CN105338563 A CN 105338563A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
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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
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
- H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
The embodiment of the invention provides a fault detection method. The fault detection method includes the steps that a fault of a DNS server or a service server related to UE is found; fault detection is executed on the DNS server or the service server by a gateway; after fault recovery, the UE is informed so as to set up connection between the UE and the DNS server or the service server. Accordingly, the embodiment further provides the gateway, the UE and a communication system, frequent release and connection of an air interface and frequent deactivation and activation bearing are avoided, the signaling overhead of the system is reduced, and stability of a mobile network is improved.
Description
Technical field
The embodiment of the present invention relates to communication technical field, particularly relates to a kind of fault detection method, gateway, subscriber equipment and communication system.
Background technology
Along with popularizing of intelligent terminal, a large amount of colourful mobile data services are emerged, support subscriber equipment (UserEquipment, UE) be linked in the Internet by the mobile network of different systems, such as QQ, Facebook, Sina's microblogging, web page browsing, email disposal etc.
Due to the surge of mobile data network flow, the mobile network of adaptive conventional terminal can't bear the heavy load originally, and network quality obviously declines.And traditional Internet service server; as QQ server, Fackbook server, the information technoloy equipment such as google server etc., dns server that arranges for Android can't bear the heavy load especially; and the robustness of this type of information technoloy equipment is nothing like Telecommunication network equipment, therefore often understand that generation systems is congested, the faults such as machine of delaying.After these equipment faults, the subscriber equipment (as intelligent terminal) accessed by mobile network can constantly be attempted, and when recovers to detect this business as early as possible, such as, constantly carry out DNS query trial, TCP connects trial etc.The time interval of above-mentioned trial behavior generally can reach tens of second, even longer, much larger than mobile network eat dishes without rice or wine inactivity detect duration (being generally 6 ~ 8 seconds).And according to the working mechanism of mobile network, when Network finding mobile network eat dishes without rice or wine inactivity detect duration continuous time in there is no transfer of data, trigger network release can eat dishes without rice or wine to connect, transfer subscriber equipment to Idle state (such as ECM_IDLE state) from connected state (such as ECM_CONNECTED state).Therefore the retry behavior such as above-mentioned TCP/DNS, eating dishes without rice or wine to be connected and constantly setting up and release of UE and mobile network can be caused, and each connection establishment all requires that UE and mobile network perform relevant connection building process, thus the Connection Release signaling producing frequent and a large amount of connection establishment signalings (such as ServiceRequest) and cause due to inertia of eating dishes without rice or wine in the long duration, therefore, once Internet service server fail, before fault recovery, the behavior of above-mentioned subscriber equipment brings serious signaling to mobile network and impacts.
In addition, UE the business of carrying out a period of time attempt always cannot successfully after, whether often initiate the deexcitation process of carrying, and can this carrying of reactivation immediately, be because the problem of mobile network causes using business to detect.The time interval between above-mentioned deexcitation/activation process is relatively large, but owing to using the number of user equipment of identical Internet service often very large, therefore when some Internet service server failures, or public server fault (such as dns server), affected a large amount of subscriber equipment can be caused simultaneously to carry out load bearing deactivation/activation process at short notice, also serious signaling can be brought to impact to mobile network.
For this reason, prior art introduces a kind of network and to eat dishes without rice or wine the method for connection control, the method introduces the state that one is referred to as " CELL_PCH ", this state can think a sub-states of connected state, than normal connected state power saving, and saving interface-free resources, but be different from Idle state, namely can keep the connection of eating dishes without rice or wine.After introducing this controlling mechanism, after wireless network detects that UE does not have transfer of data (such as 6 ~ 8 seconds), by the state transition of UE to _ FACH state, instead of Idle state, now can not discharge and eat dishes without rice or wine to connect and network side connection.Within a period of time, still do not have transfer of data when UE is in _ FACH state, then UE is moved to Idle state, and release eats dishes without rice or wine to connect.If UE there occurs transfer of data within the above-mentioned time, then UE is moved to the major state of connected state by network again, completes transfer of data.
In prior art, after service server or dns server fault, UE initiatively initiates fault detect, can perform the connection of frequently eating dishes without rice or wine and release unavoidably, or frequent load bearing deactivation and activation, brings huge signaling to impact to mobile network.
Summary of the invention
The embodiment of the present invention provides a kind of fault detection method, gateway, subscriber equipment and communication system, in order to solve in prior art the connection and release that cause because UE initiatively initiates fault detect and frequently eat dishes without rice or wine, or the problem of frequent load bearing deactivation and activation.
On the one hand, the embodiment of the present invention provides a kind of fault detection method, comprising:
Detect the domain name system DNS server relevant to user equipment (UE) or service server fault;
Gateway performs the fault detect of dns server or service server;
After described fault recovery, notice UE sets up the connection with described dns server or service server.
On the other hand, the embodiment of the present invention provides a kind of gateway, comprising:
Fault discovery unit, for finding that the domain name system DNS server relevant to user equipment (UE) or service server break down;
Fault detection unit, for performing the fault detect of dns server or service server;
Notification unit, for after fault recovery being detected, notice UE sets up the connection with described dns server or service server.
In addition, the embodiment of the present invention also provides a kind of user equipment (UE), comprising:
Fault discovery unit, for finding domain name system DNS server or service server fault;
Receiving element, performs the fault detect notice of dns server or service server for receiving gateway; After described fault recovery, receive the notice of the foundation of described gateway transmission and the connection of described dns server or service server;
Connection establishment unit, sets up the connection with described dns server or service server.
The embodiment of the present invention also provides a kind of communication system, comprise gateway and user equipment (UE), described gateway, for finding that the domain name system DNS server relevant to UE or service server break down, perform the fault detect of dns server or service server, after fault recovery being detected, notice UE sets up the connection with described dns server or service server;
Described UE, performs the fault detect notice of dns server or service server for receiving gateway; After described fault recovery, receive the notice of the foundation of described gateway transmission and the connection of described dns server or service server, and set up the connection with described dns server or service server.
The method provided by the embodiment of the present invention, gateway, subscriber equipment and communication system, carry out path detection by gateway device, avoid and eat dishes without rice or wine frequently to discharge and be connected, and load bearing deactivation and activation frequently, alleviate the signaling consumption of system, enhance the stability of mobile network.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method flow diagram of the embodiment of the present invention one;
Fig. 2 is the method flow diagram of the embodiment of the present invention two;
Fig. 3 is the method flow diagram of the embodiment of the present invention three;
Fig. 4 is the method flow diagram of the embodiment of the present invention four;
Fig. 5 is the method flow diagram of the embodiment of the present invention five;
Fig. 6 is the method flow diagram of the embodiment of the present invention six;
Fig. 7 is the method flow diagram of the embodiment of the present invention seven;
Fig. 8 is the method flow diagram of the embodiment of the present invention eight;
Fig. 9 is the method flow diagram of the embodiment of the present invention nine;
Figure 10 is the gateway architecture block diagram of the embodiment of the present invention ten;
Figure 11 is the UE structured flowchart of the embodiment of the present invention 11;
Figure 12 is the communication system architecture block diagram of the embodiment of the present invention 12.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
The embodiment of the present invention one:
The embodiment of the present invention provides a kind of fault detection method, see Fig. 1, comprising:
Step 101, discovery domain name system (DomainNameSystem, the DNS) server relevant to UE or service server fault;
Here, can be that UE self finds dns server or service server fault, also can be gateway discovery dns server or service server fault.It is to be noted, dns server relevant to UE in the embodiment of the present invention or service server fault can be that server faults itself causes, as Server Restart, also can be that the server fail of responsible routing function causes, also can be that the path fails connecting mobile network and server causes, such as path link breaks down or router on path breaks down.
UE can pass through bearer update flow process, to gateway be needed on behalf of the server info notification gateway of carrying out fault detect, here server address information can comprise IP address and/or the port numbers of dns server or service server, or the domain name etc. of described server.Here bearer update flow process can be that UE is to Serving GPRS Support Node (ServingGPRSSupportNode, SGSN) amendment PDP Context request message is sent, SGSN sends to Gateway GPRS Support Node (GatewayGPRSSupportNode, GGSN) and upgrades PDP Context request message, also can be that UE is to Mobility Management Entity (MobilityManagementEntity, MME) bearing resource amendment message is sent request, described MME is to gateway (ServingGateway, S-GW) bearing resource command messages is sent, described S-GW is to grouped data network gateway (PacketDataNetworkGateway, P-GW) described bearing resource command messages or agent binding update messages is sent, or described S-GW is to strategy and charging rule functions (PolicyandChargingRulesFunction, PCRF) sending strategy charging controls (PolicyandChargingControl, PCC) update request message, described PCRF sends described PCC update request message to P-GW.
When gateway detects dns server or service server fault, can notify that UE stops DNS query or TCP to connect and attempts.
Step 102, gateway perform the fault detect of dns server or service server;
Gateway can replace UE to perform the fault detect of dns server or service server, specifically can after getting the dns server relevant to UE or service server fault, DNS probe message is sent to dns server, or to service server transmit path probe message, such as, send connection establishment request message to detect whether can receive response.
After step 103, described fault recovery, notice UE sets up the connection with described dns server or service server.
It is to be noted, UE and gateway can at data channel Establishing process, or set up default bearer flow process, or PDN connection building process, or in dedicated bearing Establishing process, interactive gateway acts on behalf of the ability instruction that UE carries out fault detect, and the instruction of this ability can be that the ability that UE carries out fault detect is acted on behalf of in the instruction gateway support provided by gateway device, also can be the ability that the instruction UE provided by UE supports to be undertaken by gateway proxy UE fault detect.
The embodiment of the present invention provides by carrying out fault detect by gateway device, avoids and eats dishes without rice or wine frequently to discharge and be connected, and load bearing deactivation and activation frequently, alleviates the signaling consumption of system, enhances the stability of mobile network.
The embodiment of the present invention two:
In the present embodiment, UE self detects server failure, and then notification gateway equipment carries out path detection, see Fig. 2.
Step 201, set up between UE and gateway GGSN/P-GW and be used for the data channel of transfer of data;
In the gprs networks, PDP (PacketDataProtocol) passage between UE and GGSN can be set up by PDP activation flow process; In EPS network, the Bearer carrying in UE and EPS network can be set up by carrying Establishing process;
In above-mentioned flow process, can alternately to the tenability of " gateway proxy UE carries out fault detect " characteristic between UE and gateway device GGSN/P-GW, specifically can reference example four to nine.
Step 202, UE detect that dns server or service server (such as QQ server, Facebook server, Tengxun's micro blog server, news website, mail server etc.) break down;
Above-mentioned fault can be because server failure (such as Server Restart) causes, also can be because the server fail being responsible for routing function causes, also can be that the path fails connecting mobile network and server causes, such as path link breaks down or router on path breaks down.External manifestation is that UE cannot obtain DNS query response, or cannot obtain TCP connection establishment response etc.
When UE detects above-mentioned fault, can first perform following step 202a, step 202b, after cannot obtaining response message in step 202a or 202b, then perform step 203; Also can skip step 202a, 202b, directly perform step 203.
Step 202a, UE send DNS probe message by the data channel set up in step 201 to dns server, such as, send DNS query request message.
Step 202b, UE send connection establishment request message to destination server, such as TCP handshake information or HTTP connection establishment request message etc. by the data channel set up in step 201.
Can independently perform between above-mentioned steps 202a or step 202b, also backup server can be there is in relevant object dns server or service server, now after master server does not respond, UE can send relevant probe requests thereby to backup server.When above-mentioned probe requests thereby is all unsuccessful, perform step 203.
Step 203, UE to SGSN/MME, and and then send to GGSN/P-GW and upgrade bearing request message, instruction GGSN/PGW acts on behalf of UE and carries out fault detect;
Above-mentioned renewal bearing request message can a carrying in optional data passage, or a selected specifically carrying, and such as default bearer (defaultbearer) performs.
Specifically can carry one " fault detect mark " to indicate in above-mentioned renewal bearing request message.
In addition, can also carry in this request message and need the destination server detected as dns server or address of service server information, such as IP address and or port numbers, or the information such as the domain name of above-mentioned server.Above-mentioned purpose server address information can adopt independent cell to provide, also can by expanding existing cell to realize, such as expanded packet config option (PacketConfigurationOption, PCO) cell.Above-mentioned purpose server address information also can comprise the active/standby server address information of described server.
If after including destination server address information in above-mentioned request message, then above-mentioned " fault detect mark " also can show to be provided, and gateway can perform subsequent treatment according to the destination server address information received.
Divide GPRS network and EPS network two kinds of situations, the idiographic flow of bearer update is as follows:
In the gprs networks, UE is specially amendment PDP Context request (ModifyPDPContextRequest) message to the renewal bearing request message that SGSN sends; In EPS network, UE is specially request bearing resource amendment (RequestBearerResourceModification) message to the renewal bearing request message that MME sends.
After SGSN/MME receives above-mentioned request message, perform one of following handling process according to the interface case of network:
1) in the gprs networks, if this SGSN is Gn/GpSGSN, then this SGSN sends to GGSN and upgrades PDP Context request (UpdatePDPContextRequest) message, i.e. step 203a1; Now GGSN performs step 203a2, sends upgrade PDP Context response (UpdatePDPContextResponse) message to SGSN.
2) in the gprs networks, if this SGSN is S4SGSN, or in EPS network, then SGSN/MME sends bearing resource order (BearerResourceCommand) message to S-GW, i.e. step 203b1, then performs one of following handling process according to the interface protocol situation of S-GW:
2-1) between S-GW and P-GW, adopt GTP (GPRSTunnelingProtocol, GPRS Tunnel Protocol) agreement, then S-GW sends bearing resource command messages (BearerResourceCommand) to P-GW, i.e. step 203b2-a1.Now, P-GW performs step 203b2-a2, sends more new bearer request (UpdateBearerRequest) message to S-GW;
2-2) between S-GW and P-GW, adopt PMIP (ProxyMobileIPProtocol, proxy mobile IP protocol) agreement time, then S-GW sends agent binding update (ProxyBindingUpdate) message to P-GW, i.e. step 203b2-b1.Now, the follow-up execution step 203b2-b2 of P-GW, sends agent binding to S-GW and confirms (ProxyBindingAck) message;
When 2-3) adopting PMIP agreement between S-GW and P-GW, it is mutual that S-GW also can complete with P-GW by PCRF, namely S-GW performs step 203b2-c1, send PCC update request message to PCRF, PCRF performs step 203b2-c2, sends PCC update request message to P-GW, P-GW performs step 203b2-c3, send PCC to PCRF and upgrade acknowledge message, PCRF performs step 203b2-c4, sends PCC upgrade acknowledge message to S-GW.
Above-mentioned steps 203a1,203b1,203b2-a1,203b2-b1,203b2-c1,203b2-c2 comprise the dns server or address of service server information that above-mentioned needs detect, and the information such as " fault detect mark ".
When gateway device GGSN/P-GW receives above-mentioned steps 203a1,203b2-a1,203b2-b1, or after the message of 203b2-c2, send response message, i.e. step 203a2,203b2-a2,203b2-b2 to UE, or 203b2-c3.UE gateway can be indicated in above-mentioned response message to accept the request of UE, such as, acceptance instruction is provided; If or gateway cannot provide measuring ability, now gateway can return refusal response; If or gateway cannot provide the inquiry to all destination servers, then gateway can provide instruction in the response message, can be specifically return " can on behalf of detect server info " or " cannot on behalf of the server info detected " etc.Above-mentioned information can adopt independent cell to provide, and also by expanding existing cell to realize, such as, can be able to be placed in PCO information element.
When S-GW receives above-mentioned 203b2-a2,203b2-b2, or after the response message of 203b2-c4, perform step 203b3, send to MME and upgrade bearing request message, this message comprises the above-mentioned response message that P-GW provides.
After step 204, SGSN/MME receive the message of step 203a2 or step 203b3, send to UE and upgrade bearing response message;
The response message that above-mentioned renewal bearing response message can indicate the above-mentioned gateway of UE to provide.
After UE receives this response message, the DNS carried out in stopping step 202a/202b or connection establishment check processing.If UE still receives the detection request to service server that business software (such as QQ) that subscriber equipment runs sends, then UE can directly abandon this request, and does not perform step 202a/202b.
Above-mentioned renewal bearing response message specifically can be divided into following several situation:
1), in GPRS network, SGSN sends amendment PDP Context to UE and accepts (ModifyPDPContextAccept) message;
2), in EPS network, MME sends UpdateBearerRequest message to UE.Under this scene, after UE receives this UpdateBearerRequest message, to MME, and and then send UpdateBearerResponse message to S-GW and P-GW.
The address information of the dns server that step 205a, GGSN/P-GW provide in step 203 according to UE replaces UE to initiate DNS detection flow process;
Step 205b, GGSN/P-GW replace UE to initiate connection establishment testing process according to the object address of service server information that UE provides in step 203;
Above-mentioned steps 204 and step 205a/205b can not have precedence relationship.
Step 206, gateway detect one or more destination server fault recovery relevant;
Such as have received the response of DNS query, or all certain destination server TCP or HTTP connection establishment successfully etc.
When gateway detects destination server fault recovery or path can reach, following step can be repeated.
Gateway sends bearer update request message to UE, the dns server that the notice current path of UE can reach or business server information;
Gateway can send above-mentioned bearer update request message to all UE having established data channel.In order to reduce the size of message of more new bearer request, gateway also only can send above-mentioned bearer update request message to the UE (such as, have recorded the UE of relevant information in step 204) of requested gateway proxy execution fault detect before.Concrete grammar such as, the dns server that gateway can reach according to the fault recovery detected or path or business server information (domain name or IP address etc.), the information of contrast record, sends bearer update request message to the UE that have subscribed this fault detection information.
Can also carry in this bearer update request message such as, except requiring the dns server that fault recovery or path can reach or address of service server information to have been detected, IP address and/or the information such as port numbers, domain name on behalf of other detection according to UE before.Above-mentioned information can adopt independent cell to provide, and also can be realized by the existing cell of expansion (as PCO).Above-mentioned server address information can comprise the information of active/standby server.
Idiographic flow comprises following process:
In the gprs networks, GGSN sends to SGSN and upgrades PDP Context request message.
In EPS network, perform one of following handling process according to the interface protocol situation between S-GW and P-GW:
1) if adopt GTP agreement between S-GW and P-GW, then P-GW performs step 207b1-a1, namely sends to S-GW and upgrades bearing request message.
2) if adopt PMIP agreement between S-GW and P-GW, then P-GW performs step 207b1-b1, PCC update request message is sent to PCRF, PCRF performs step 207b1-b2, send PCC update request message to S-GW, S-GW performs step 207b1-b3, sends PCC upgrade acknowledge message to PCRF, PCRF performs step 207b1-b4, sends PCC update request message to P-GW.
After S-GW receives the request message of above-mentioned steps 207b1-a1 or step 207b1-b2, perform step 207b2, send to MME and upgrade bearing request message.
After SGSN/MME receives the request message of above-mentioned steps 207a1 or step 207b2, send bearer update request message to UE.Above-mentioned bearer update request message specifically can be divided into following several situation:
1), in GPRS network, SGSN sends amendment PDP Context request (ModifyPDPContextRequest) message to UE;
2), in EPS network, MME sends to UE and upgrades bearing request message.
The dns server that UE can reach according to the fault recovery received in step 207c or path or business server information, recover related service, performs step 207d, sends bearer update response message to SGSN/MME.Idiographic flow is, in GPRS network, UE sends amendment PDP Context response message to SGSN; In EPS network, UE sends to MME and upgrades bearing response message.
After SGSN/MME receives above-mentioned steps 207d message, notice GGSN/P-GW, concrete process is as follows:
1) in the gprs networks, if this SGSN is Gn/GpSGSN, then this SGSN performs step 207a2, sends upgrade PDP Context response (UpdatePDPContextResponse) message to GGSN.
2) in the gprs networks, if this SGSN is S4SGSN; Or in EPS network, described SGSN/MME performs step 207b3, send more new bearer response to S-GW.If adopt GTP agreement between S-GW and P-GW, then perform step 207b1-a2, send to P-GW and upgrade bearing response message; If adopt PMIP agreement between S-GW and P-GW, if step 207b1-b3 does not perform before, then S-GW performs 207b1-b3, and 207b1-b4.
The present embodiment detects server failure by UE self, carry out fault detect by gateway device GGSN/P-GW, avoid and eat dishes without rice or wine frequently to discharge and be connected, and load bearing deactivation and activation frequently, alleviate the signaling consumption of system, enhance the stability of mobile network.
The embodiment of the present invention three:
With embodiment two unlike, the present embodiment detects server failure by gateway, see Fig. 3.
Step 301, set up between UE and gateway GGSN/P-GW and be used for the data channel of transfer of data;
In the gprs networks, PDP (PacketDataProtocol) passage between UE and GGSN can be set up by PDP activation flow process; In EPS network, the Bearer carrying in UE and EPS network can be set up by carrying Establishing process.
Particularly, the server failure that described gateway detects can be dns server or service server fault, see step 302a or 302b.
The dns server that step 302a is relevant with UE breaks down;
External manifestation is that UE cannot obtain DNS query response.Then UE can send DNS probe message frequently to this dns server, such as, send DNS query request message.
The service server (such as QQ server, Facebook server, Tengxun's micro blog server, news website, mail server etc.) that step 302b is relevant with UE breaks down;
Can be because destination server fault (such as Server Restart) causes, also can be because the server fail being responsible for routing function causes, also can be that the path fails connecting mobile network and server causes, such as path link breaks down or router on path breaks down.External manifestation is that UE cannot obtain TCP connection establishment response etc., then UE can send connection establishment request message to destination server (comprising active/standby server), such as TCP handshake information or HTTP connection establishment request message etc.
Step 303, gateway detect that dns server or service server break down;
Concrete grammar, can be by mechanism such as DPI (DataPacketInspection) or DFI (DataFlowInspection), gateway detects that UE is carrying out DNS query or TCP connection trial frequently, but can not receive response all the time; Or gateway is by the path detection of self, detect dns server fault or service server fault etc.
Now, gateway can be initiated to the path detection of relevant dns server or service server, namely performs following step 303a, step 303b.Before gateway performs the fault detect of dns server or service server, or simultaneously, or afterwards, can notify that UE stops DNS query or TCP to connect and attempts.
Step 303a, GGSN/P-GW initiate DNS testing process to the dns server of fault;
Step 303b, GGSN/P-GW initiate connection establishment testing process to the object service server of fault;
Gateway can send bearer update request message to UE, current dns server or the business server information on behalf of performing fault-finding of notice UE gateway.
Gateway can send above-mentioned bearer update request message to all UE having established data channel; Also can in order to reduce the size of message of more new bearer request, gateway only sends above-mentioned bearer update request message to the current UE carrying out fault detect.
Gateway can also be comprised on behalf of dns server or the address of service server information of carrying out fault detect, the information such as the domain name of such as IP address and/or port numbers, described server in this bearer update request message.Above-mentioned server address information can adopt independent cell to provide, and also by expanding existing cell to realize, such as, can be able to be placed in packet configuration option (PacketConfigurationOption, PCO) cell.Above-mentioned server address information can comprise the information of described active/standby server.
Idiographic flow can comprise:
In the gprs networks, GGSN performs step 304a1, sends upgrade PDP Context request message to SGSN.
In EPS network, perform one of following handling process according to the interface protocol situation between S-GW and P-GW:
1) between S-GW and P-GW, adopt GTP agreement, then P-GW performs step 304b1-a1, namely sends to S-GW and upgrades bearing request message.
2) when adopting PMIP agreement between S-GW and P-GW, then P-GW performs step 304b1-b1, PCC update request message is sent to PCRF, PCRF performs step 304b1-b2, send PCC update request message to S-GW, S-GW performs step 304b1-b3, sends PCC upgrade acknowledge message to PCRF, PCRF performs step 304b1-b4, sends PCC update request message to P-GW.
After S-GW receives the request message of above-mentioned steps 304b1-a1 or step 304b1-b2, perform step 304b2, send to MME and upgrade bearing request message.
After SGSN/MME receives the request message of above-mentioned steps 304a1 or step 304b2, perform step 304c, send bearer update request message to UE.Above-mentioned bearer update request message specifically can be divided into following several situation:
1), in GPRS network, SGSN sends amendment PDP Context request message to UE;
2), in EPS network, MME sends to UE and upgrades bearing request message.
UE according to the gateway received in step 304c on behalf of the dns server or the business server information that carry out fault detect, if UE is proceeding to the fault detect (as carrying out path detection) of identical destination address, then UE stops above-mentioned testing process (step 302a, step 302b), perform step 304d, send bearer update response message to gateway.
If the dns server of UE ongoing fault detect process or service server are not included in the gateway that comprises in above-mentioned bearer update request message on behalf of in the dns server carrying out fault detect or business server information, then UE comprises at the above-mentioned bearer update response message sent to gateway the dns server or business server information, such as IP address and/or port numbers, domain name etc. that above-mentioned gateway do not provide.Now when gateway receives above-mentioned information, UE is replaced to be initiated to new dns server or the fault detect of service server.
Idiographic flow is, in GPRS network, UE sends ModifyPDPContextAccept message to SGSN; In EPS network, UE sends UpdateBearerResponse message to MME.
After SGSN/MME receives above-mentioned steps 304d message, notice GGSN/P-GW, concrete process is as follows:
1) in the gprs networks, if this SGSN is Gn/GpSGSN, then this SGSN performs step 304a2, sends upgrade PDP Context response message to GGSN.
2) in the gprs networks, if this SGSN is S4SGSN; Or in EPS network, described SGSN/MME performs step 304b3, send more new bearer response to S-GW.When adopting GTP agreement between S-GW and P-GW, then perform step 304b1-a2, send to P-GW and upgrade bearing response message; When adopting PMIP agreement between S-GW and P-GW, if step 304b1-b3 does not perform before, then S-GW performs 304b1-b3, and 304b1-b4.
It should be noted that, whenever new dns server or service server fault being detected, gateway can perform above-mentioned steps notice UE again.
GGSN/P-GW detects dns server or service server fault recovery (step 305), 306a1,306b1-a1,306b1-b1,306b1-b2,306b1-b3,306b1-b4,306b2,306c, 306d, 306a2,306b3,306b1-a2 and 207a1,207b1-a1,207b1-b1,207b1-b2,207b1-b3,207b1-b4,207b2,207c, 207d, 207a2,207b3,207b1-a2 are identical respectively, do not repeat them here.
The present embodiment finds server failure by gateway device, replace UE to carry out destination server fault detect by gateway device, avoid and eat dishes without rice or wine frequently to discharge and be connected, and load bearing deactivation and activation frequently, alleviate the signaling consumption of system, enhance the stability of mobile network.
Divide several embodiment specifically to introduce interactive gateway between UE and gateway below and carry out the instruction of fault-detecting ability.Below in embodiment " gateway proxy UE carries out fault detect " instruction independent cell can be adopted to provide, also by expanding existing cell to realize, such as, can be able to be placed in PCO information element, under do not repeat.UE at described data channel Establishing process, or sets up default bearer flow process, or PDN connection building process, or in dedicated bearing Establishing process, to gateway provide UE gateway support to act on behalf of ability instruction that UE carries out server failure detection; And/or gateway at described data channel Establishing process, or sets up default bearer flow process, or PDN connection building process, or in dedicated bearing Establishing process, to UE provide gateway gateway support act on behalf of UE carry out server failure detection ability instruction.
The embodiment of the present invention four:
The present embodiment is introduced under data channel that UE in GPRS network initiates sets up scene, and UE and gateway carry out the mutual concrete scheme of fault-detecting ability.
Step 401, UE send to SGSN and activate PDP Context request message.If UE gateway support agency carries out dns server or service server fault detection capability, then UE comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned request message.Above-mentioned activation PDP Context request message specifically can be divided into following several situation:
1) PDP Context request message (ActivatePDPContextRequest) is activated, or;
2) secondary PDP Context request message (ActivateSecondaryPDPContextRequest) is activated.
Step 402, SGSN send to GGSN/P-GW and set up PDP Context request message, if UE provides " gateway proxy UE carries out fault detect " instruction in step 401, then this instruction is included in above-mentioned sending in the request message of GGSN/P-GW by SGSN.Above-mentioned set up PDP Context request message and specifically can be divided into following several situation:
1) if this SGSN is Gn/GpSGSN, then this SGSN sends to GGSN and sets up PDP Context request message;
2) if this SGSN is S4SGSN, then change SGSN and set up conversation request message to S-GW transmission.Between S-GW and P-GW, adopt GTP agreement, then S-GW sends to P-GW and sets up conversation request message; When adopting PMIP agreement between S-GW and P-GW, then S-GW sends agent binding update (ProxyBindingUpdate) message to P-GW.
Step 403, GGSN/P-GW set up corresponding PDP Context, record UE " gateway proxy UE carries out fault detect " instruction, send set up PDP Context response message to SGSN.If GGSN/P-GW gateway support agency carries out dns server or service server fault detection capability, then GGSN/P-GW comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned response message.
Above-mentioned set up PDP Context response message and specifically can be divided into following several situation:
1) if this SGSN is Gn/GpSGSN, then this GGSN sends to SGSN and sets up PDP Context response message;
2) if this SGSN is S4SGSN, adopt GTP agreement between S-GW and P-GW, then this P-GW sends to S-GW and sets up conversational response message; When adopting PMIP agreement between S-GW and P-GW, then above-mentioned P-GW is specially agent binding confirmation (ProxyBindingAck) message to the message that S-GW sends.S-GW sends to SGSN and sets up conversational response message.
Step 404, SGSN send activation PDP Context to UE and accept message.Instruction that if GGSN/P-GW provides in step 403 " gateway proxy UE carries out fault detect ", then this instruction is included in accepting in message of the above-mentioned UE of sending to by SGSN.Correspondingly, above-mentioned activation PDP Context accepts message specifically can be divided into the following two kinds situation:
1) activate PDP Context and accept message (ActivatePDPContextAccept), or;
2) activate secondary PDP Context and accept message (ActivateSecondaryPDPContextAccept).
The embodiment of the present invention is by the data channel Establishing process of UE initiation, and UE and gateway interactive gateway are acted on behalf of UE and carried out fault detect instruction, so that follow-up when dns server or service server break down, gateway proxy UE carries out fault detect.
The embodiment of the present invention five:
The present embodiment is introduced under data channel that network side in GPRS network initiates sets up scene, and UE and gateway carry out the mutual concrete scheme of fault-detecting ability.
Step 501, GGSN send Packet Data Unit notice request (PDUNotificationRequest) message to SGSN.If GGSN gateway support agency carries out dns server or service server fault detection capability, then GGSN comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned request message.
Step 502, SGSN send Packet Data Unit push-notification-answer (PDUNotificationResponse) message to GGSN.
Step 503, SGSN send request PDP context activation (RequestPDPContextActivation) message to UE.Instruction that if GGSN provides in step 501 " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the request message of UE by SGSN.
Step 504 ~ step 507 identical with the process that UE in the step 401 ~ step 404 in embodiment four initiates PDP activation (not comprising the process of PDP secondary activating), repeats no more herein.
It should be added that, the concrete Message Processing in the present embodiment in step 4 ~ step 7 does not comprise the scene that SGSN is S4SGSN, only comprises the process that SGSN is Gn/GpSGSN.
The embodiment of the present invention is by the data channel Establishing process of network side initiation, and UE and gateway interactive gateway are acted on behalf of UE and carried out fault detect instruction, so that follow-up when dns server or service server break down, gateway proxy UE carries out fault detect.
The embodiment of the present invention six:
The present embodiment to be introduced in EPS network UE and is initiated under Attach flow process sets up the scene of default bearer, and UE and gateway carry out the mutual concrete scheme of fault-detecting ability.
Step 601, UE send Attach Request message to MME.If UE gateway support agency carries out dns server or service server fault detection capability, then UE comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned request message.Above-mentioned instruction also can not provide in step 601, and provides in step 603.
Step 602, MME send Encryption Options request (CipheredOptionsRequest) message to UE.
Step 603, UE send Encryption Options response message (CipheredOptionsResponse) to MME.If UE gateway support agency carries out dns server or service server fault detection capability, and UE is not supplied to MME in step 601, then UE comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned response message.UE performs other process of Attach flow process, and what such as complete with HLR/HSS is mutual, sets up the context etc. of UE, performs following step.
Step 604, MME send to S-GW and set up conversation request message.
When adopting GTP agreement between S-GW and P-GW, then S-GW sends to P-GW and sets up conversation request message; When adopting PMIP agreement between S-GW and P-GW, then S-GW sends agent binding update messages to P-GW.
Instruction that if UE provides in step 601 or step 603 " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the request message of S-GW/P-GW by MME.
Step 605, P-GW set up corresponding session context, record UE " gateway proxy UE carries out fault detect " instruction, send set up conversational response message to S-GW.
Correspondingly, adopt GTP agreement between S-GW and P-GW, then above-mentioned P-GW is specially to the message that S-GW sends and sets up conversational response message; When adopting PMIP agreement between S-GW and P-GW, then above-mentioned P-GW sends message to S-GW and is specially proxy binding acknowledgment messages.
S-GW sends to MME and sets up conversational response message (CreateSessionResponse).
If P-GW gateway support agency carries out dns server or service server fault detection capability, then P-GW comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned response message.
Step 606, MME send attachment to UE and accept message.Instruction that if P-GW provides in steps of 5 " gateway proxy UE carries out fault detect ", then this instruction is included in accepting in message of the above-mentioned UE of sending to by MME.
The embodiment of the present invention is initiated Attach flow process by UE and is set up in default bearer process, and UE and gateway interactive gateway are acted on behalf of UE and carried out fault detect instruction, so that follow-up when dns server or service server break down, gateway proxy UE carries out fault detect.
The embodiment of the present invention seven:
Under the present embodiment introduces the scene that in EPS network, UE request PDN connects, UE and gateway carry out the mutual concrete scheme of fault-detecting ability.
Step 701, UE send PDN connection establishment request message to MME;
If UE gateway support agency carries out dns server or service server fault detection capability, then UE comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned request message.
Step 702, MME send to S-GW and set up conversation request message;
When adopting GTP agreement between S-GW and P-GW, then S-GW sends to P-GW and sets up conversation request message; When adopting PMIP agreement between S-GW and P-GW, then S-GW sends agent binding update messages to P-GW.
Instruction that if UE provides in step 701 " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the request message of S-GW/P-GW by MME.
Step 703, P-GW set up corresponding session context, record UE " gateway proxy UE carries out fault detect " instruction, send set up conversational response message to S-GW;
Correspondingly, adopt GTP agreement between S-GW and P-GW, then above-mentioned P-GW is specially to the message that S-GW sends and sets up conversational response message; When adopting PMIP agreement between S-GW and P-GW, then the message that above-mentioned P-GW sends to S-GW is specially proxy binding acknowledgment messages.
S-GW sends to MME and sets up conversational response message.
If P-GW gateway support agency carries out dns server or service server fault detection capability, then P-GW comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned response message.
Step 704, MME send PDN to UE and accept message (PDNConnectivityAccept).Instruction that if P-GW provides in step 703 " gateway proxy UE carries out fault detect ", then this instruction is included in accepting in message of the above-mentioned UE of sending to by MME.
The embodiment of the present invention is asked in PDN connection procedure by UE, and UE and gateway interactive gateway are acted on behalf of UE and carried out fault detect instruction, so that follow-up when dns server or service server break down, gateway proxy UE carries out fault detect.
The embodiment of the present invention eight:
The present embodiment is introduced based under the scene of the dedicated bearing Establishing process of GTP agreement in EPS network, and UE and gateway carry out the mutual concrete scheme of fault-detecting ability.
Step 801, P-GW are to S-GW, and and then to MME send set up bearing request message, if P-GW gateway support agency carries out dns server or service server fault detection capability, then P-GW comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned request message.
Step 802, MME send session management request message to UE.Instruction that if P-GW provides in step 801 " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the request message of UE by MME.
Step 803, UE record P-GW " gateway proxy UE carries out fault detect " instruction, send session management response message to MME.If UE gateway support agency carries out dns server or service server fault detection capability, then UE comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned response message.
Step 804, MME to S-GW, and and then set up bearing response message to P-GW transmission.Instruction that if UE provides in step 803 " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the response message of P-GW by MME.
The embodiment of the present invention is passed through based in the dedicated bearing Establishing process of GTP agreement, and UE and gateway interactive gateway are acted on behalf of UE and carried out fault detect instruction, so that follow-up when dns server or service server break down, gateway proxy UE carries out fault detect.
The embodiment of the present invention nine:
The present embodiment is introduced based under the scene of the dedicated bearing Establishing process of PMIP agreement in EPS network, and UE and gateway carry out the mutual concrete scheme of fault-detecting ability.
P-GW performs step 901a, sends PCC update request to PCRF, and PCRF performs step 901b and sends PCC update request to S-GW, and S-GW execution step 901c upgrades acknowledge message to PCRF transmission PCC, and PCRF performs step 901d and sends PCC renewal confirmation to P-GW.
If P-GW gateway support agency carries out dns server or service server fault detection capability, then P-GW comprises this " gateway proxy UE carries out fault detect " instruction in above-mentioned steps 901a, step 901b message, sends to S-GW.
Step 902, S-GW send to MME and set up bearing request message.Instruction that if P-GW provides in step 1 " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the request message of MME by S-GW.
Step 903, MME send session management request message to UE.Instruction that if P-GW provides in step 901a or 901b " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the request message of UE by MME.
Step 904, UE record P-GW " gateway proxy UE carries out fault detect " instruction, send session management response message to MME.If UE gateway support agency carries out dns server or service server fault detection capability, then UE comprises this " gateway proxy UE carries out fault detect " instruction at above-mentioned response message.
Step 905, MME send to S-GW and set up bearing response message (CreateBearerResponse).Instruction that if UE provides in step 904 " gateway proxy UE carries out fault detect ", then this instruction is included in above-mentioned sending in the response message of P-GW by MME.
S-GW performs step 906a, and send PCC update request message to PCRF, PCRF performs step 906b, send PCC update request message to P-GW, P-GW performs step 906c, sends PCC upgrade confirmation to PCRF, PCRF performs step 906d, sends PCC upgrade confirmation to S-GW.Instruction that if S-GW provides in step 905 " gateway proxy UE carries out fault detect ", then this instruction is included in the message of above-mentioned steps 906a, step 906b by S-GW.
The embodiment of the present invention is passed through based in the dedicated bearing Establishing process of PMIP agreement, and UE and gateway interactive gateway are acted on behalf of UE and carried out fault detect instruction, so that follow-up when dns server or service server break down, gateway proxy UE carries out fault detect.
The embodiment of the present invention ten:
The present embodiment provides a kind of gateway device, see Figure 10, comprising:
Fault discovery unit 1001, for finding the dns server relevant to UE or service server fault;
Fault detection unit 1002, for performing the fault detect of dns server or service server;
Notification unit 1003, after fault recovery being detected, notice UE sets up the connection with described dns server or service server.
Here, fault discovery unit 1001 detects DPI by packet or data-flow detection DFI mechanism detects that UE carries out DNS query or TCP connects trial, and described UE can not receive response.Or, receive the request that UE carries out fault detect.
Fault detection unit 1002 performs the fault detect of dns server or service server, can be specially: send DNS probe message to dns server, or sends connection establishment request message etc. to service server.
Gateway in the embodiment of the present invention can be GGSN or P-GW.
The gateway device of the embodiment of the present invention, acts on behalf of UE and performs fault detect, can avoid eating dishes without rice or wine frequently to discharge and be connected, and load bearing deactivation and activation frequently, and the signaling consumption of mitigation system, strengthens the stability of mobile network.
The embodiment of the present invention 11:
The present embodiment provides a kind of UE, see Figure 11, comprising:
Fault discovery unit 1101, for finding dns server or service server fault;
Receiving element 1102, performs the notice of the fault detect of dns server or service server for receiving gateway; After described fault recovery, receive the notice of the foundation of described gateway transmission and the connection of described dns server or service server;
Connection establishment unit 1103, for setting up the connection with described dns server or service server.
Here, UE may further include transmitting element 1104, for the server address information needing gateway to perform fault detect being sent to gateway by bearer update flow process.Here bearer update flow process can be that UE sends amendment PDP Context request message to SGSN, and SGSN sends to GGSN and upgrades PDP Context request message; Also can be that UE sends request bearing resource amendment message to MME, described MME sends bearing resource command messages to S-GW, described S-GW sends described bearing resource command messages or agent binding update messages to P-GW, or described S-GW sends PCC update request message to PCRF, described PCRF sends described PCC update request message to P-GW.
The UE that the embodiment of the present invention provides, finds dns server or service server fault by UE, and performs fault detect by gateway, can avoid eating dishes without rice or wine frequently to discharge and be connected, and load bearing deactivation and activation frequently, the signaling consumption of mitigation system, strengthens the stability of mobile network.
The embodiment of the present invention 12:
The present embodiment provides a kind of communication system, see Figure 12, comprising:
Gateway 1201, for finding that the dns server relevant to UE or service server break down, performs the fault detect of dns server or service server, and after fault recovery being detected, notice UE sets up the connection with described dns server or service server;
UE1202, performs the fault detect notice of dns server or service server for receiving gateway 1201; After described fault recovery, receive the notice of the foundation of described gateway 1201 transmission and the connection of described dns server or service server, and set up the connection with described dns server or service server.
Here gateway 1201 can be GGSN or P-GW.
The communication system of the embodiment of the present invention, carries out fault detect by gateway proxy UE, can avoid eating dishes without rice or wine frequently to discharge and be connected, and load bearing deactivation and activation frequently, and the signaling consumption of mitigation system, strengthens the stability of mobile network
In several embodiments that the application provides, should be understood that, disclosed system, equipment and method, can realize by another way.Such as, apparatus embodiments described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of equipment or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.
The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the part steps of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-OnlyMemory, be called for short ROM), random access memory (RandomAccessMemory, be called for short RAM), magnetic disc or CD etc. various can be program code stored medium.Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (19)
1. a fault detection method, is characterized in that, comprising:
User equipment (UE) finds the domain name system DNS server relevant to described UE or service server fault;
Described UE notification gateway performs the fault detect of dns server or service server, and needs to perform the dns server of fault detect or the address information of service server to described gateway transmission;
Described UE receives the notification message that described gateway sends after described fault recovery, sets up the connection with described dns server or service server according to described notification message.
2. method according to claim 1, is characterized in that, described UE finds the dns server relevant to described UE or service server fault, comprising:
Described UE cannot obtain the response of described dns server or described service server.
3. method according to claim 1 and 2, is characterized in that, described UE notification gateway performs the fault detect of dns server or service server, comprising:
Described UE sends to described gateway and upgrades bearing request message, and wherein, described renewal bearing request message is carried and is used to indicate the mark that described gateway performs fault detect.
4. method according to claim 1 and 2, is characterized in that, described UE sends to described gateway to be needed to perform the dns server of fault detect or the address information of service server, comprising:
Described UE, by bearer update flow process, sends described address information to described gateway.
5. method according to claim 4, is characterized in that, described gateway is GPRS Support Node GGSN, and described bearer update flow process comprises:
Described UE sends amendment packet data protocol PDP Context request message to Serving GPRS Support Node SGSN, sends renewal PDP Context request message to make described SGSN to described GGSN.
6. method according to claim 4, is characterized in that, described gateway is grouped data network gateway P-GW, and described bearer update flow process comprises:
Described UE sends request bearing resource amendment message to Mobility Management Entity MME, to make described MME send bearing resource command messages to gateway S-GW,
Described S-GW sends described bearing resource command messages or agent binding update messages to described P-GW, or described S-GW is to strategy and charging rule functions PCRF sending strategy charging control PCC update request message and described PCRF sends described PCC update request message to described P-GW.
7. method according to claim 3, is characterized in that, described method also comprises:
Described UE receives the renewal bearing response message that described gateway sends;
Described UE stops DNS query or stops sending the request of TCP connection establishment.
8. method according to claim 1 and 2, is characterized in that, described notification message comprises and recovers the dns server of fault or the address information of service server.
9. method according to claim 1 and 2, is characterized in that, described address information comprises:
At least one item in the IP address of described dns server or service server or port numbers;
Or, the domain-name information of described dns server or service server.
10. method according to claim 1 and 2, is characterized in that, described method also comprises:
Described UE and described gateway interaction capabilities indication information, described capability indication information is used to indicate described gateway to be had and acts on behalf of the ability that UE carries out fault detect, or is used to indicate described UE and supports that described gateway carries out fault detect.
11. methods according to claim 10, is characterized in that, described UE and described gateway interaction capabilities indication information, comprising:
Described UE at data channel Establishing process, or sets up default bearer flow process, or PDN connection building process, or in dedicated bearing Establishing process, and the mutual described capability indication information of described gateway.
12. 1 kinds of fault detection methods, is characterized in that, comprising:
The domain name system DNS server that gateway discovery is relevant to user equipment (UE) or service server fault;
Described gateway notifies that described UE stops DNS query or stops sending the request of TCP connection establishment, and performs the fault detect of described dns server or service server;
After described fault recovery, described gateway sends a notification message to described UE, and described notification message is used for the connection establishment of described UE and described dns server or service server.
13. methods according to claim 12, is characterized in that, the dns server that described gateway discovery is relevant to UE or service server fault, comprising:
Carry out DNS query when described gateway detects the described UE of DPI or data-flow detection DFI mechanism detection by packet or send the request of TCP connection establishment, and when described UE does not receive response, dns server described in described gateway discovery or service server fault.
14. methods according to claim 12 or 13, it is characterized in that, described method also comprises:
At least one item below described gateway sends to described UE: UE described in described gateway proxy performs the indication information of fault detect, and UE described in described gateway proxy performs the dns server of fault detect or the address information of service server.
15. methods according to claim 12 or 13, it is characterized in that, described gateway performs the fault detect of dns server or service server, comprising:
Described gateway sends DNS probe message to described dns server, or sends connection establishment request message to described application server.
16. methods according to claim 12 or 13, is characterized in that, described notification message comprises and recovers the dns server of fault or the address information of service server.
17. methods according to claim 16, is characterized in that, described address information comprises:
At least one item in the IP address of described dns server or service server or port numbers;
Or, the domain-name information of described dns server or service server.
18. methods according to claim 12 or 13, it is characterized in that, described method also comprises:
Described gateway and described UE interaction capabilities indication information, described capability indication information is used to indicate described gateway to be had and acts on behalf of the ability that UE carries out fault detect, or is used to indicate described UE and supports that described gateway carries out fault detect.
19. methods according to claim 10, is characterized in that, described UE and described gateway interaction capabilities indication information, comprising:
Described gateway at data channel Establishing process, or sets up default bearer flow process, or PDN connection building process, or in dedicated bearing Establishing process, described capability indication information mutual with described UE.
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| CN113497727A (en) * | 2020-04-01 | 2021-10-12 | 中国移动通信集团辽宁有限公司 | SAE gateway fault processing method and system |
| CN113497727B (en) * | 2020-04-01 | 2024-02-27 | 中国移动通信集团辽宁有限公司 | SAE gateway fault processing method and system |
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| CN105338563B (en) | 2018-10-09 |
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