CN105338563B - A kind of fault detection method, gateway, user equipment and communication system - Google Patents
A kind of fault detection method, gateway, user equipment and communication system Download PDFInfo
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- CN105338563B CN105338563B CN201510882383.4A CN201510882383A CN105338563B CN 105338563 B CN105338563 B CN 105338563B CN 201510882383 A CN201510882383 A CN 201510882383A CN 105338563 B CN105338563 B CN 105338563B
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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]
-
- 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
-
- 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 present invention provides a kind of fault detection method, including finds and the relevant dns servers of UE or service server failure；Gateway goes to the fault detect of dns server or service server；After the fault recovery, notice UE establishes the connection with the dns server or service server.Correspondingly, the embodiment of the present invention also provides a kind of gateway, UE and communication system, avoid it is frequent eat dishes without rice or wine release with connect, and frequent load bearing deactivation and activate, alleviate the signaling overheads of system, enhance the stability of mobile network.
Description
Technical field
The present embodiments relate to field of communication technology more particularly to a kind of fault detection method, gateway, user equipment and
Communication system.
Background technology
With popularizing for intelligent terminal, a large amount of colourful mobile data services have been emerged, have supported user equipment
(User Equipment, UE) is linked by the mobile network of different systems in internet, such as QQ, Facebook, Sina
Microblogging, web page browsing, email disposal etc..
Due to the surge of mobile data network flow, the mobile network for being adapted to conventional terminal originally can't bear the heavy load, network matter
Amount is decreased obviously.And traditional Internet service server, as QQ servers, Fackbook servers, for Android be arranged
The information technoloy equipments such as google servers etc., dns server are even more that can't bear the heavy load, and the robustness of such information technoloy equipment is nothing like telecommunications
The network equipment, therefore the often failures such as generating system congestion, delay machine.After these equipment faults, connect by mobile network
The user equipment (such as intelligent terminal) entered can be attempted constantly, to detect when the business is restored as early as possible, such as constantly into
Row DNS query is attempted, TCP connection is attempted etc..The time interval of above-mentioned trial behavior generally can reach tens of seconds or even longer,
It eats dishes without rice or wine inactivity detection duration (generally 6~8 seconds) much larger than mobile network.And according to the working mechanism of mobile network, when
Network discovery detects in the continuous time of duration in mobile network's inactivity of eating dishes without rice or wine without data transmission, can trigger network release
It eats dishes without rice or wine to connect, user equipment is switched into Idle state (such as ECM_IDLE shapes from connected state (such as ECM_CONNECTED states)
State).Therefore above-mentioned TCP/DNS etc. retries behavior, can lead to eating dishes without rice or wine to connect and constantly establishing and release for UE and mobile network, and every
Secondary connection foundation requires that UE and mobile network execute relevant connection building process, is frequently built with a large amount of connection to generate
Vertical signaling (such as Service Request) and due to eat dishes without rice or wine in the long duration it is inactive caused by Connection Release signaling,
Therefore, once Internet service server fail, before fault recovery, the behavior of above-mentioned user equipment is to mobile network
Bring serious signaling impact.
In addition, UE often initiates deactivating for carrying after the business for carrying out a period of time is attempted not succeeding always
Processing living, and can reactivation carrying immediately, to detect whether being since the problem of mobile network leads to not use business.On
The time interval stated between deactivation/activation process is relatively large, but due to the use of the user equipment of identical Internet service
Quantity is often very big, therefore when some Internet service server failure or public server failure (such as DNS service
Device), affected a large amount of user equipment can be caused to be carried out at the same time load bearing deactivation/activation processing in a short time, also can
Serious signaling impact is brought to mobile network.
It eats dishes without rice or wine the method for connection control for this purpose, the prior art introduces a kind of network, this method introduces one kind and is referred to as
The state of " CELL_PCH ", the state may be considered a sub-states of connected state, than normal connected state power saving, and save
Interface-free resources, but it is different from Idle state, the connection eated dishes without rice or wine can be kept.It introduces after the controlling mechanism, works as wireless network
After detecting that UE does not have data transmission (such as 6~8 seconds), by the state transition of UE to _ FACH state, rather than it is idle
State will not discharge eat dishes without rice or wine connection and network side connection at this time.Still do not have whithin a period of time when UE is in _ FACH state
There is data transmission, then UE is moved into Idle state, and discharge and eat dishes without rice or wine to connect.If data biography has occurred in UE within the above-mentioned time
Defeated, then UE is moved to the major state of connected state by network again, completes data transmission.
In the prior art, after service server or dns server failure, UE actively initiates fault detect, can inevitably execute
The connection and release frequently eated dishes without rice or wine, or frequently load bearing deactivation and activation, huge signaling impact is brought to mobile network.
Invention content
A kind of fault detection method of offer of the embodiment of the present invention, gateway, user equipment and communication system, it is existing to solve
In technology the connection frequently eated dishes without rice or wine and release, or frequently load bearing deactivation and activation are caused because UE actively initiates fault detect
The problem of.
On the one hand, the embodiment of the present invention provides a kind of fault detection method, including：
Detection and the relevant domain name system DNS server of user equipment (UE) or service server failure；
Gateway goes to the fault detect of dns server or service server；
After the fault recovery, notice UE establishes the connection with the dns server or service server.
On the other hand, the embodiment of the present invention provides a kind of gateway, including：
Fault discovery unit, for finding and the relevant domain name system DNS server of user equipment (UE) or service server
It breaks down；
Fault detection unit, the fault detect for going to dns server or service server；
Notification unit, for after detecting fault recovery, notice UE to be established and the dns server or service server
Connection.
In addition, the embodiment of the present invention also provides a kind of user equipment (UE), including：
Fault discovery unit, for finding domain name system DNS server or service server failure；
Receiving unit goes to the fault detect notice of dns server or service server for receiving gateway；The event
After barrier restores, the notice that the foundation that the gateway is sent is connect with the dns server or service server is received；
Connection establishment unit establishes the connection with the dns server or service server.
The embodiment of the present invention also provides a kind of communication system, including gateway and user equipment (UE), the gateway, for finding
It breaks down with the relevant domain name system DNS servers of UE or service server, goes to dns server or service server
Fault detect, after detecting fault recovery, notice UE establishes the connection with the dns server or service server；
The UE goes to the fault detect notice of dns server or service server for receiving gateway；The failure
After recovery, receive the notice that foundations that the gateway is sent is connect with the dns server or service server, and foundation and
The connection of the dns server or service server.
Method, gateway, user equipment and the communication system provided through the embodiment of the present invention carries out path by gateway device
Detection avoids and frequently eats dishes without rice or wine to discharge and connect, and frequent load bearing deactivation, with activation, the signaling for alleviating system is opened
Pin, enhances the stability of mobile network.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached 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 structure diagrams 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.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The embodiment of the present invention one：
The embodiment of the present invention provides a kind of fault detection method, referring to Fig. 1, including：
Step 101 finds to take with the relevant domain name systems of UE (Domain Name System, DNS) server or business
Business device failure；
Can also be gateway discovery DNS clothes here it is possible to be that UE itself has found dns server or service server failure
Business device or service server failure.It is pointed out that in the embodiment of the present invention and the relevant dns servers of UE or business service
Device failure, which can be server faults itself, to be caused, and can also be the server generation of responsible routing function such as Server Restart
Failure causes, and can also be to connect the path fails of mobile network and server to cause, such as path link breaks down
Or the router on path breaks down.
UE can pass through bearer update flow, it would be desirable to which gateway notifies net on behalf of the server info for carrying out fault detect
It closes, server address information here may include IP address and/or port numbers or the institute of dns server or service server
State the domain name etc. of server.Here bearer update flow can be UE to Serving GPRS Support Node (Serving GPRS
Support Node, SGSN) modification PDP Context request message is sent, SGSN is to Gateway GPRS Support Node (Gateway
GPRS Support Node, GGSN) send update PDP Context request message；Can also be UE to mobility management entity
(Mobility Management Entity, MME) sends request bearing resource and changes message, and the MME is to gateway
(Serving Gateway, S-GW) sends bearing resource command messages, and the S-GW is to grouped data network gateway (Packet
Data Network Gateway, P-GW) send the bearing resource command messages or agent binding update messages or the S-
GW to strategy with charging rule functions (Policy and Charging Rules Function, PCRF) sending strategy charging control
It makes (Policy and Charging Control, PCC) and updates request message, the PCRF sends the PCC updates to P-GW
Request message.
When gateway detects dns server or service server failure, UE can be notified to stop DNS query or TCP
Connection is attempted.
Step 102, gateway go to the fault detect of dns server or service server；
Gateway can replace UE to go to the fault detect of dns server or service server, can specifically get
After the relevant dns servers of UE or service server failure, DNS probe messages are sent to dns server, or take to business
Business device transmitting path probe message, such as send connection and establish request message to detect whether that response can be received.
After step 103, the fault recovery, notice UE establishes the connection with the dns server or service server.
It should be pointed out that UE and gateway can be in data channel Establishing process, or establish default bearer flow or PDN
In connection building process or dedicated bearing Establishing process, interactive gateway acts on behalf of the ability instruction that UE carries out fault detect, the ability
Indicate it can is that the instruction gateway provided by gateway device is supported to act on behalf of the ability that UE carries out fault detect, can also be to be carried by UE
The instruction UE of confession supports to carry out the ability of fault detect by gateway proxy UE.
The embodiment of the present invention is provided by carrying out fault detect by gateway device, is avoided and is frequently eated dishes without rice or wine to discharge and connect
It connects, and frequent load bearing deactivation and activation, alleviates the signaling overheads of system, enhance the stability of mobile network.
The embodiment of the present invention two：
UE itself detection services device failure in the present embodiment, and then notification gateway equipment carries out path detection, referring to Fig. 2.
The data channel for data transmission is established between step 201, UE and gateway GGSN/P-GW；
In the gprs networks, PDP (the Packet Data between UE and GGSN can be established by PDP activation flow
Protocol) channel；In EPS networks, the carryings of the Bearer in UE and EPS networks can be established by carrying Establishing process；
It can be interacted in above-mentioned flow, between UE and gateway device GGSN/P-GW to " gateway proxy UE carries out failure inspection
The tenability of survey " characteristic, specifically refers to example IV to nine.
Step 202, UE detect dns server or service server (such as QQ servers, Facebook servers,
Tencent's micro blog server, news website, mail server etc.) it breaks down；
Above-mentioned failure can be since server failure (such as Server Restart) causes, and can also be because being responsible for routing
The server fail of function causes, and can also be to connect the path fails of mobile network and server to cause, example
Such as path link break down or path on router break down.External manifestation, which is UE, can not obtain DNS query sound
It answers, or TCP connection can not be obtained and establish response etc..
When UE detects above-mentioned failure, following step 202a, step 202b can be first carried out, as step 202a or
After can not obtaining response message in 202b, then execute step 203；Also step 202a, 202b is can skip, step 203 is directly executed.
Step 202a, UE sends DNS probe messages by the data channel established in step 201 to dns server, such as
Send DNS query request message.
Step 202b, UE sends connection foundation request to destination server by the data channel established in step 201 and disappears
Request message etc. is established in breath, such as TCP handshake informations or HTTP connections.
Above-mentioned steps 202a either can independently execute relevant purpose dns server or business between step 202b
There may also be backup servers for server, and at this time after master server does not respond to, UE can be sent to backup server
Relevant probe requests thereby.When above-mentioned probe requests thereby is unsuccessful, step 203 is executed.
Step 203, UE send update bearing request message to GGSN/P-GW in turn to SGSN/MME, indicate GGSN/
PGW acts on behalf of UE and carries out fault detect；
Above-mentioned update bearing request message can be carried with one in optional data channel, or selected one is specifically held
It carries, such as default bearer (default bearer) executes.
Specifically one " fault detect mark " can be carried in above-mentioned update bearing request message to be indicated.
In addition, the destination server such as dns server for needing to detect or business clothes can also be carried in the request message
Business device address information, such as the information such as IP address and/or port numbers or the domain name of above-mentioned server.Above-mentioned purpose server
Location information may be used individual cell and provide, and can also be realized by extending existing cell, such as expanded packet configuration
Option (Packet Configuration Option, PCO) cell.Above-mentioned purpose server address information can also include institute
State the active/standby server address information of server.
If including in above-mentioned request message after destination server address information, above-mentioned " fault detect mark "
It can not have to display to provide, gateway can execute subsequent processing according to the destination server address information received.
It is divided to GPRS network and EPS networks two kinds of situations, the detailed process of bearer update is as follows：
In the gprs networks, the update bearing request message that UE is sent to SGSN is specially to change PDP Context request
(Modify PDP Context Request) message；In EPS networks, the update bearing request message that UE is sent to MME has
Body is that request bearing resource changes (Request Bearer Resource Modification) message.
After SGSN/MME receives above-mentioned request message, one of following process flow is executed according to the interface case of network：
1) in the gprs networks, if the SGSN is Gn/Gp SGSN, which sends update PDP Context to GGSN
Ask (Update PDP Context Request) message, i.e. step 203a1；GGSN executes step 203a2 at this time, to SGSN
It sends update PDP Context and responds (Update PDP Context Response) message.
2) in the gprs networks, if the SGSN is S4SGSN, or in EPS networks, then SGSN/MME is sent out to S-GW
Bearing resource order (Bearer Resource Command) message, i.e. step 203b1 is sent, is then assisted according to the interface of S-GW
It discusses situation and executes one of following process flow：
2-1) when between S-GW and P-GW use GTP (GPRS Tunneling Protocol, GPRS Tunnel Protocol) assist
It discusses, then S-GW sends bearing resource command messages (Bearer Resource Command), i.e. step 203b2-a1 to P-GW.
At this point, P-GW executes step 203b2-a2, more new bearer request (Update Bearer Request) message is sent to S-GW；
2-2) when between S-GW and P-GW use PMIP (Proxy Mobile IP Protocol, proxy mobile IP protocol)
When agreement, then S-GW sends agent binding update (Proxy Binding Update) message, i.e. step 203b2-b1 to P-GW.
At this point, P-GW subsequent execution step 203b2-b2, agent binding confirmation (Proxy Binding Ack) message is sent to S-GW；
2-3) when using PMIP agreements between S-GW and P-GW, S-GW can also be completed by PCRF and the friendship of P-GW
Mutually, i.e. S-GW executes step 203b2-c1, and sending PCC to PCRF updates request message, and PCRF executes step 203b2-c2, to P-
GW sends PCC and updates request message, and P-GW executes step 203b2-c3, and sending PCC to PCRF updates confirmation message, and PCRF is executed
Step 203b2-c4 sends PCC to S-GW and updates confirmation message.
Above-mentioned steps 203a1,203b1,203b2-a1,203b2-b1,203b2-c1,203b2-c2 need to examine comprising above-mentioned
The information such as the dns server or address of service server information of survey, and " fault detect mark ".
When gateway device GGSN/P-GW receives disappearing for above-mentioned steps 203a1,203b2-a1,203b2-b1 or 203b2-c2
After breath, response message, i.e. step 203a2,203b2-a2,203b2-b2 or 203b2-c3 are sent to UE.Above-mentioned response message
In can indicate that UE gateways receive the request of UE, such as provide and receive instruction；Or if gateway can not provide detection function, this
When gateway can return to refusal respond；Or if gateway can not provide the inquiry to all purposes server, gateway can be with
Instruction is provided in the response message, can be specifically to return to " can be on behalf of the server info of detection " or " can not be on behalf of detection
Server info " etc..Above- mentioned information may be used individual cell and provide, and can also be realized by extending existing cell,
Such as it can be placed in PCO information element.
After the response message that S-GW receives above-mentioned 203b2-a2,203b2-b2 or 203b2-c4, step is executed
203b3 sends update bearing request message to MME, which includes the above-mentioned response message that P-GW is provided.
After step 204, SGSN/MME receive the message of step 203a2 or step 203b3, sends more new bearer to UE and ring
Answer message；
Above-mentioned update bearing response message can indicate the response message that the above-mentioned gateways of UE provide.
After UE receives the response message, stops the DNS being carried out in step 202a/202b or connection is established at detection
Reason.If UE still receives the detection to service server that the business software (such as QQ) run on user equipment is sent and asks
It asks, then UE can directly abandon the request, without executing step 202a/202b.
Above-mentioned update bearing response message can specifically be divided into following several situations：
1) in GPRS network, SGSN sends modification PDP Context to UE and receives (Modify PDP Context Accept)
Message；
2) in EPS networks, MME sends Update Bearer Request message to UE.Under the scene, UE receives this
After Update Bearer Request message, to MME, and Update Bearer are sent to S-GW and P-GW in turn
Response message.
Step 205a, GGSN/P-GW is sent out according to the address information of the UE dns servers provided in step 203 instead of UE
It plays DNS and detects flow；
Step 205b, GGSN/P-GW replaces UE according to the purpose address of service server information that UE is provided in step 203
It initiates the connection and establishes testing process；
Above-mentioned steps 204 and step 205a/205b can not have precedence relationship.
Step 206, gateway detect one or more related destination server fault recovery；
Such as the response of DNS query is had received, either TCP or the HTTP connection of all some destination servers is successfully established
Deng.
When gateway detect destination server fault recovery or path up to when, repeat execute following step.
Gateway sends bearer update request message to UE, notice the UE currently reachable dns server in path or industry
Business server info；
Gateway can send above-mentioned bearer update request message to all UE for having been set up data channel.In order to reduce
The size of message of more new bearer request, gateway can also only to requested gateway proxy before execute fault detect UE (for example,
The UE of relevant information is had recorded in step 204) send above-mentioned bearer update request message.Specific method for example, gateway according to inspection
The reachable dns server or business server information (domain name or IP address etc.) of the fault recovery measured or path,
The information for comparing record sends bearer update request message to the UE for having subscribed the fault detection information.
Can also be carried in the bearer update request message except before according to UE require on behalf of detection other after testing
To the reachable dns server of fault recovery or path or address of service server information, such as IP address and/or port numbers,
The information such as domain name.Above- mentioned information may be used individual cell and provide, can also be by extending existing cell (such as PCO) come real
It is existing.Above-mentioned server address information may include the information of active/standby server.
Detailed process includes following processing：
In the gprs networks, GGSN sends update PDP Context request message to SGSN.
In EPS networks, one of following process flow is executed according to the interface protocol situation between S-GW and P-GW：
If 1) use GTP agreements between S-GW and P-GW, P-GW executes step 207b1-a1, i.e., sends and update to S-GW
Bearing request message.
If 2) use PMIP agreements between S-GW and P-GW, P-GW executes step 207b1-b1, and PCC is sent more to PCRF
New request message, PCRF execute step 207b1-b2, and sending PCC to S-GW updates request message, and S-GW executes step 207b1-
B3 sends PCC to PCRF and updates confirmation message, and PCRF executes step 207b1-b4, and sending PCC to P-GW updates request message.
After S-GW receives the request message of above-mentioned steps 207b1-a1 or step 207b1-b2, step 207b2 is executed, to
MME sends update bearing request message.
After SGSN/MME receives the request message of above-mentioned steps 207a1 or step 207b2, bearer update is sent to UE
Request message.Above-mentioned bearer update request message can specifically be divided into following several situations：
1) in GPRS network, SGSN sends modification PDP Context to UE and asks (Modify PDP Context
Request) message；
2) in EPS networks, MME sends update bearing request message to UE.
UE believes according to the reachable dns server of the fault recovery or path that are received in step 207c or service server
Breath restores related service, executes step 207d, and bearer update response message is sent to SGSN/MME.Detailed process is GPRS nets
In network, UE sends modification PDP Context response message to SGSN；In EPS networks, UE sends update bearing response message to MME.
After SGSN/MME receives above-mentioned steps 207d message, notify GGSN/P-GW, specific processing as follows：
1) in the gprs networks, if the SGSN is Gn/Gp SGSN, which executes step 207a2, is sent out to GGSN
Send update PDP Context response (Update PDP Context Response) message.
2) in the gprs networks, if the SGSN is S4SGSN；Or in EPS networks, the SGSN/MME executes step
Rapid 207b3 sends the response of more new bearer to S-GW.If when using GTP agreements between S-GW and P-GW, then follow the steps
207b1-a2 sends update bearing response message to P-GW；If when using PMIP agreements between S-GW and P-GW, if step
207b1-b3 is executed without before, then S-GW executes 207b1-b3 and 207b1-b4.
The present embodiment carries out fault detect by UE itself detection service device failures, by gateway device GGSN/P-GW, avoids
It is frequent eat dishes without rice or wine release with connect, and frequent load bearing deactivation and activate, alleviate the signaling overheads of system, enhance
The stability of mobile network.
The embodiment of the present invention three：
Unlike embodiment two, the present embodiment is by gateway detection service device failure, referring to Fig. 3.
The data channel for data transmission is established between step 301, UE and gateway GGSN/P-GW；
In the gprs networks, PDP (the Packet Data between UE and GGSN can be established by PDP activation flow
Protocol) channel；In EPS networks, the carryings of the Bearer in UE and EPS networks can be established by carrying Establishing process.
Specifically, the server failure that the gateway detects can be dns server or service server failure, referring to
Step 302a or 302b.
Step 302a, it breaks down with the relevant dns servers of UE；
External manifestation, which is UE, can not obtain DNS query response.Then UE can send frequent DNS detections to the dns server
Message, such as send DNS query request message.
Step 302b, and the relevant service servers of UE (such as QQ servers, Facebook servers, Tencent microblogging clothes
Business device, news website, mail server etc.) it breaks down；
It can be since destination server failure (such as Server Restart) causes, can also be because being responsible for routing function
Server fail cause, can also be to connect the path fails of mobile network and server to cause, such as path
Link break down or path on router break down.External manifestation, which is UE, can not obtain TCP connection foundation response
Deng, then UE can send connection to destination server (including active/standby server) and establish request message, such as TCP handshake informations or
Request message etc. is established in person's HTTP connections.
Step 303, gateway detect that dns server or service server break down；
Specific method can be that gateway passes through DPI (Data Packet Inspection) or DFI (Data Flow
) etc. Inspection mechanism detect that UE is frequently carrying out DNS query or TCP connection is attempted, but can not receive sound always
It answers；Either gateway detects dns server failure or service server failure etc. by the path detection of itself.
At this point, gateway can initiate the path detection of related dns server or service server, that is, execute following steps
Rapid 303a, step 303b.Gateway is gone to before the fault detect of dns server or service server, either simultaneously or it
Afterwards, it can notify that UE stops DNS query or TCP connection is attempted.
Step 303a, GGSN/P-GW initiates DNS testing processes to the dns server of failure；
Step 303b, GGSN/P-GW is initiated the connection to the purpose service server of failure and is established testing process；
Gateway can send bearer update request message to UE, and notice UE gateways are currently on behalf of the DNS for executing fault-finding
Server or business server information.
Gateway can send above-mentioned bearer update request message to all UE for having been set up data channel；Or
The size of message of more new bearer request is reduced, gateway only sends above-mentioned bearer update to the UE for currently carrying out fault detect and asks
Seek message.
Can also include dns server or business of the gateway on behalf of progress fault detect in the bearer update request message
Server address information, such as the information such as IP address and/or port numbers, the domain name of the server.Above-mentioned server address letter
Breath may be used individual cell and provide, and can also be realized by extending existing cell, such as can be placed on packet configuration
In option (Packet Configuration Option, PCO) cell.Above-mentioned server address information may include the master
The information of standby server.
Detailed process may include：
In the gprs networks, GGSN executes step 304a1, and update PDP Context request message is sent to SGSN.
In EPS networks, one of following process flow is executed according to the interface protocol situation between S-GW and P-GW：
1) when using GTP agreements between S-GW and P-GW, then P-GW executes step 304b1-a1, i.e., sends and update to S-GW
Bearing request message.
2) when using PMIP agreements between S-GW and P-GW, then P-GW executes step 304b1-b1, and PCC is sent to PCRF
Request message is updated, PCRF executes step 304b1-b2, and sending PCC to S-GW updates request message, and S-GW executes step
304b1-b3 sends PCC to PCRF and updates confirmation message, and PCRF executes step 304b1-b4, and PCC update requests are sent to P-GW
Message.
After S-GW receives the request message of above-mentioned steps 304b1-a1 or step 304b1-b2, step 304b2 is executed, to
MME sends update bearing request message.
After SGSN/MME receives the request message of above-mentioned steps 304a1 or step 304b2, step 304c is executed, to
UE sends bearer update request message.Above-mentioned bearer update request message can specifically be divided into following several situations：
1) in GPRS network, SGSN sends modification PDP Context request message to UE；
2) in EPS networks, MME sends update bearing request message to UE.
UE believes according to the gateway received in step 304c on behalf of the dns server or service server for carrying out fault detect
Breath, if UE is proceeding to the fault detect (as carried out path detection) of identical destination address, UE stops above-mentioned detection stream
Journey (step 302a, step 302b) executes step 304d, and bearer update response message is sent to gateway.
If the dns server or service server of the ongoing fault detect processing of UE are not included on above-mentioned hold
Carry update request message in include gateway on behalf of carry out fault detect dns server or business server information in, then
UE is in the dns server or business that the above-mentioned bearer update response message sent to gateway includes that above-mentioned gateway does not provide
Server info, such as IP address and/or port numbers, domain name etc..At this time when gateway receives above- mentioned information, arrived instead of UE initiations
The fault detect of new dns server or service server.
Detailed process is, in GPRS network, UE sends Modify PDP Context Accept message to SGSN；EPS nets
In network, UE sends Update Bearer Response message to MME.
After SGSN/MME receives above-mentioned steps 304d message, notify GGSN/P-GW, specific processing as follows：
1) in the gprs networks, if the SGSN is Gn/Gp SGSN, which executes step 304a2, is sent out to GGSN
Send update PDP Context response message.
2) in the gprs networks, if the SGSN is S4SGSN；Or in EPS networks, the SGSN/MME executes step
Rapid 304b3 sends the response of more new bearer to S-GW.When using GTP agreements between S-GW and P-GW, 304b1- is thened follow the steps
A2 sends update bearing response message to P-GW；When using PMIP agreements between S-GW and P-GW, if step 304b1-b3
It is executed without before, then S-GW executes 304b1-b3 and 304b1-b4.
It should be noted that whenever detecting new dns server or service server failure, gateway can be again
It executes above-mentioned steps and notifies UE.
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 with
207a1,207b1-a1,207b1-b1,207b1-b2,207b1-b3,207b1-b4,207b2,207c,207d,207a2,
207b3,207b1-a2 difference are identical, and details are not described herein.
The present embodiment finds server failure by gateway device, replaces UE to carry out destination server failure by gateway device
Detection avoids and frequently eats dishes without rice or wine to discharge and connect, and frequent load bearing deactivation, with activation, the signaling for alleviating system is opened
Pin, enhances the stability of mobile network.
Several embodiments are divided specifically to introduce the instruction that interactive gateway between UE and gateway carries out fault-detecting ability below.Under
" gateway proxy UE carries out fault detect " instruction in the embodiment of face may be used individual cell and provide, and can also pass through extension
Existing cell is realized, such as can be placed in PCO information element, under do not repeat.UE is in the data channel Establishing process, or builds
In vertical default bearer flow or PDN connection building process or dedicated bearing Establishing process, UE gateway support generations are provided to gateway
Manage the ability instruction that UE carries out server failure detection；And/or gateway is in the data channel Establishing process, or establish default
Carry in flow or PDN connection building process or dedicated bearing Establishing process, to UE provide gateway gateway support act on behalf of UE into
The ability instruction of row server failure detection.
The embodiment of the present invention four：
The present embodiment is introduced the data channel that UE is initiated in GPRS network and is established under scene, and UE and gateway carry out fault detect
The concrete scheme of ability interaction.
Step 401, UE send activation PDP Context request message to SGSN.If UE gateway supports agency carries out DNS clothes
Business device or service server fault detection capability, then UE includes " the gateway proxy UE progress failures in above-mentioned request message
Detection " instruction.Above-mentioned activation PDP Context request message can specifically be divided into following several situations：
1) activation PDP Context request message (Activate PDP Context Request), or；
2) secondary PDP Context request message (Activate Secondary PDP Context Request) is activated.
Step 402, SGSN establish PDP Context request message to GGSN/P-GW transmissions, if UE is carried in step 401
For " gateway proxy UE carries out fault detect " instruction, then the instruction is included being sent to asking for GGSN/P-GW above-mentioned by SGSN
It asks in message.It is above-mentioned to establish PDP Context request message and specifically be divided into following several situations：
If 1) SGSN is Gn/Gp SGSN, which establishes PDP Context request message to GGSN transmissions；
If 2) SGSN is S4SGSN, changes SGSN and establish conversation request message to S-GW transmissions.As S-GW and P-GW
Between use GTP agreements, then S-GW to P-GW transmission establish conversation request message；When between S-GW and P-GW use PMIP agreements
When, then S-GW sends agent binding update (Proxy Binding Update) message to P-GW.
Step 403, GGSN/P-GW establish corresponding PDP Context, and record UE " gateway proxy UE carries out fault detect " refers to
Show, PDP Context response message is established to SGSN transmissions.If GGSN/P-GW gateway supports agency carry out dns server or
Service server fault detection capability, then GGSN/P-GW includes " the gateway proxy UE progress failure inspections in above-mentioned response message
Survey " instruction.
It is above-mentioned to establish PDP Context response message and specifically be divided into following several situations：
If 1) SGSN is Gn/Gp SGSN, which establishes PDP Context response message to SGSN transmissions；
If 2) SGSN is S4SGSN, when using GTP agreements between S-GW and P-GW, then the P-GW is built to S-GW transmissions
Vertical conversational response message；When using PMIP agreements between S-GW and P-GW, then the message that above-mentioned P-GW is sent to S-GW is specific
For agent binding confirmation (Proxy Binding Ack) message.S-GW establishes conversational response message to SGSN transmissions.
Step 404, SGSN send activation PDP Context received message to UE.If GGSN/P-GW is carried in step 403
For " gateway proxy UE carries out fault detect " instruction, then the instruction is included in the above-mentioned received message for being sent to UE by SGSN
In.Correspondingly, above-mentioned activation PDP Context received message can specifically be divided into the following two kinds situation：
1) activation PDP Context received message (Activate PDP Context Accept), or；
2) secondary PDP Context received message (Activate Secondary PDP Context Accept) is activated.
The embodiment of the present invention by the data channel Establishing process that UE is initiated, UE and gateway interactive gateway act on behalf of UE into
Row fault detect indicates, in order to which subsequently when dns server or service server break down, gateway proxy UE carries out failure
Detection.
The embodiment of the present invention five：
The present embodiment is introduced the data channel that network side is initiated in GPRS network and is established under scene, and UE and gateway carry out failure
The concrete scheme of detectability interaction.
Step 501, GGSN send Packet Data Unit notice request (PDU Notification Request) to SGSN
Message.If GGSN gateway supports agency carries out dns server or service server fault detection capability, GGSN is above-mentioned
Request message includes " gateway proxy UE the carries out fault detect " instruction.
Step 502, SGSN send Packet Data Unit push-notification-answer (PDU Notification Response) to GGSN
Message.
Step 503, SGSN send request PDP context activation (Request PDP Context Activation) to UE
Message.If GGSN provides " gateway proxy UE carries out fault detect " instruction in step 501, which is included by SGSN
It is sent in the request message of UE above-mentioned.
Step 504~step 507 initiates the processing phase of PDP activation with UE in the step 401 in example IV~step 404
With (processing for not including PDP secondary activatings), details are not described herein again.
It should be added that the specific Message Processing in the present embodiment in step 4~step 7 is not including SGSN
The scene of S4SGSN only includes the processing that SGSN is Gn/Gp SGSN.
The embodiment of the present invention is by the way that in the data channel Establishing process that network side is initiated, UE and gateway interactive gateway are acted on behalf of
UE carries out fault detect instruction, in order to which subsequently when dns server or service server break down, gateway proxy UE is carried out
Fault detect.
The embodiment of the present invention six：
The present embodiment, which introduces in EPS networks UE and initiates Attach flows, to be established under the scene of default bearer, UE and gateway into
The concrete scheme of row fault-detecting ability interaction.
Step 601, UE send Attach Request message to MME.If UE gateway supports agency carries out dns server or industry
Business server failure detection function, then UE includes " gateway proxy UE the carries out fault detect " instruction in above-mentioned request message.
Above-mentioned instruction can not also provide in step 601, and provide in step 603.
Step 602, MME send Encryption Options to UE asks (Ciphered Options Request) message.
Step 603, UE send Encryption Options response message (Ciphered Options Response) to MME.If UE
Gateway support agency carries out dns server or service server fault detection capability, and UE is not supplied in step 601
MME, then UE includes " gateway proxy UE the carries out fault detect " instruction in above-mentioned response message.UE executes Attach flows
Other processing, such as the interaction with HLR/HSS is completed, the context etc. of UE is established, following step is executed.
Step 604, MME establish conversation request message to S-GW transmissions.
When using GTP agreements between S-GW and P-GW, then S-GW establishes conversation request message to P-GW transmissions；Work as S-GW
When using PMIP agreements between P-GW, then S-GW sends agent binding update messages to P-GW.
If UE provides " gateway proxy UE carries out fault detect " instruction, MME in step 601 or step 603
Include being sent in the request message of S-GW/P-GW above-mentioned by the instruction.
Step 605, P-GW establish corresponding session context, and record UE " gateway proxy UE carries out fault detect " is indicated,
Conversational response message is established to S-GW transmissions.
Correspondingly, it is specially to build when using GTP agreements, the then message that above-mentioned P-GW is sent to S-GW between S-GW and P-GW
Vertical conversational response message；When using PMIP agreements between S-GW and P-GW, then above-mentioned P-GW is specially to S-GW transmissions message
Proxy binding acknowledgment messages.
S-GW establishes conversational response message (Create Session Response) to MME transmissions.
If P-GW gateway supports agency carries out dns server or service server fault detection capability, P-GW exist
Above-mentioned response message includes " gateway proxy UE the carries out fault detect " instruction.
Step 606, MME send attachment received message to UE.If P-GW provide in steps of 5 " gateway proxy UE into
Row fault detect " indicates that then the instruction is included being sent in the received message of UE above-mentioned by MME.
During the embodiment of the present invention establishes default bearer by UE initiations Attach flows, UE and gateway interactive gateway generation
Manage UE and carry out fault detect instruction, in order to subsequently when dns server or service server break down, gateway proxy UE into
Row fault detect.
The embodiment of the present invention seven：
The present embodiment is introduced under the scene that UE in EPS networks asks PDN connections, and UE and gateway carry out fault-detecting ability friendship
Mutual concrete scheme.
Step 701, UE send PDN connections to MME and establish request message；
If UE gateway supports agency carries out dns server or service server fault detection capability, UE is above-mentioned
Request message includes " gateway proxy UE the carries out fault detect " instruction.
Step 702, MME establish conversation request message to S-GW transmissions；
When using GTP agreements between S-GW and P-GW, then S-GW establishes conversation request message to P-GW transmissions；Work as S-GW
When using PMIP agreements between P-GW, then S-GW sends agent binding update messages to P-GW.
If UE provides " gateway proxy UE carries out fault detect " instruction in step 701, which is included by MME
It is sent in the request message of S-GW/P-GW above-mentioned.
Step 703, P-GW establish corresponding session context, and record UE " gateway proxy UE carries out fault detect " is indicated,
Conversational response message is established to S-GW transmissions；
Correspondingly, it is specially to build when using GTP agreements, the then message that above-mentioned P-GW is sent to S-GW between S-GW and P-GW
Vertical conversational response message；When using PMIP agreements between S-GW and P-GW, then the message that above-mentioned P-GW is sent to S-GW is specific
For proxy binding acknowledgment messages.
S-GW establishes conversational response message to MME transmissions.
If P-GW gateway supports agency carries out dns server or service server fault detection capability, P-GW exist
Above-mentioned response message includes " gateway proxy UE the carries out fault detect " instruction.
Step 704, MME send PDN connections received message (PDN Connectivity Accept) to UE.If P-GW
" gateway proxy UE carries out fault detect " instruction is provided in step 703, then the instruction is included being sent to UE above-mentioned by MME
Received message in.
The embodiment of the present invention is asked by UE in PDN connection procedures, and UE and gateway interactive gateway act on behalf of UE and carry out failure inspection
Instruction is surveyed, in order to which subsequently 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 in EPS networks under the scene of the dedicated bearing Establishing process based on GTP agreements, UE and gateway into
The concrete scheme of row fault-detecting ability interaction.
Step 801, P-GW establish bearing request message to MME transmissions in turn to S-GW, if P-GW gateway support generations
Reason carries out dns server or service server fault detection capability, then P-GW includes " the gateway generation in above-mentioned request message
Manage UE and carry out fault detect " instruction.
Step 802, MME send session management request message to UE.If P-GW provides " gateway generation in step 801
Manage UE and carry out fault detect " instruction, then the instruction is included being sent in the request message of UE above-mentioned by MME.
Step 803, UE records P-GW " gateway proxy UE carries out fault detect " instruction, session management response is sent to MME
Message.If UE gateway supports agency carries out dns server or service server fault detection capability, UE is in above-mentioned response
Message includes " gateway proxy UE the carries out fault detect " instruction.
Step 804, MME establish bearing response message to P-GW transmissions in turn to S-GW.If UE is in step 803
" gateway proxy UE carries out fault detect " instruction is provided, then the instruction is included disappearing in the above-mentioned response for being sent to P-GW by MME
In breath.
The embodiment of the present invention is by the way that in the dedicated bearing Establishing process based on GTP agreements, UE and gateway interactive gateway are acted on behalf of
UE carries out fault detect instruction, in order to which subsequently when dns server or service server break down, gateway proxy UE is carried out
Fault detect.
The embodiment of the present invention nine：
The present embodiment is introduced in EPS networks under the scene of the dedicated bearing Establishing process based on PMIP agreements, UE and gateway
Carry out the concrete scheme of fault-detecting ability interaction.
P-GW executes step 901a, sends PCC update requests to PCRF, PCRF executes step 901b and sends PCC to S-GW
Update request, S-GW execute step 901c and send PCC update confirmation messages to PCRF, and PCRF executes step 901d and sent to P-GW
PCC updates confirm.
If P-GW gateway supports agency carries out dns server or service server fault detection capability, P-GW exist
Above-mentioned steps 901a, step 901b message include " gateway proxy UE the carries out fault detect " instruction, are sent to S-GW.
Step 902, S-GW establish bearing request message to MME transmissions.If P-GW provides " gateway generation in step 1
Manage UE and carry out fault detect " instruction, then the instruction is included being sent in the request message of MME above-mentioned by S-GW.
Step 903, MME send session management request message to UE.If P-GW is provided in step 901a or 901b
" gateway proxy UE carries out fault detect " instruction, then the instruction is included being sent in the request message of UE above-mentioned by MME.
Step 904, UE records P-GW " gateway proxy UE carries out fault detect " instruction, session management response is sent to MME
Message.If UE gateway supports agency carries out dns server or service server fault detection capability, UE is in above-mentioned response
Message includes " gateway proxy UE the carries out fault detect " instruction.
Step 905, MME establish bearing response message (Create Bearer Response) to S-GW transmissions.If UE
" gateway proxy UE carries out fault detect " instruction is provided in step 904, then the instruction is included being sent to P- above-mentioned by MME
In the response message of GW.
S-GW executes step 906a, and sending PCC to PCRF updates request message, and PCRF executes step 906b, is sent out to P-GW
PCC is sent to update request message, P-GW executes step 906c, and sending PCC updates to PCRF confirms that PCRF executes step 906d, to
S-GW sends PCC updates and confirms.If S-GW provides " gateway proxy UE carries out fault detect " instruction in step 905,
S-GW by the instruction include above-mentioned steps 906a, step 906b message in.
The embodiment of the present invention is by the way that in the dedicated bearing Establishing process based on PMIP agreements, UE and gateway interactive gateway are acted on behalf of
UE carries out fault detect instruction, in order to which subsequently when dns server or service server break down, gateway proxy UE is carried out
Fault detect.
The embodiment of the present invention ten：
The present embodiment provides a kind of gateway devices, referring to Figure 10, including：
Fault discovery unit 1001, for finding and the relevant dns servers of UE or service server failure；
Fault detection unit 1002, the fault detect for going to dns server or service server；
Notification unit 1003, after detecting fault recovery, notice UE is established and the dns server or business service
The connection of device.
Here, fault discovery unit 1001 by data packet detect DPI or data-flow detection DFI mechanism detect UE into
Row DNS query or TCP connection are attempted, and the UE can not receive response.Alternatively, receiving the request that UE carries out fault detect.
Fault detection unit 1002 goes to the fault detect of dns server or service server, can be specially：To
Dns server sends DNS probe messages, or sends connection to service server and establish request message etc..
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 executes fault detect, can be to avoid the frequent release and even of eating dishes without rice or wine
It connects, and frequent load bearing deactivation and activation, mitigates the signaling overheads of system, enhance the stability of mobile network.
The embodiment of the present invention 11：
The present embodiment provides a kind of UE, referring to Figure 11, including：
Fault discovery unit 1101, for finding dns server or service server failure；
Receiving unit 1102, the notice for going to the fault detect of dns server or service server for receiving gateway；
After the fault recovery, the notice that the foundation that the gateway is sent is connect with the dns server or service server is received；
Connection establishment unit 1103, for establishing the connection with the dns server or service server.
Here, UE may further include transmission unit 1104, gateway will be needed to execute for passing through bearer update flow
The server address information of fault detect is sent to gateway.Here bearer update flow can be that UE sends modification to SGSN
PDP Context request message, SGSN send update PDP Context request message to GGSN；Can also be that UE sends request to MME
Bearing resource changes message, and the MME sends bearing resource command messages to S-GW, and the S-GW sends the carrying to P-GW
Resource command message or agent binding update messages or the S-GW send PCC to PCRF and update request message, the PCRF to
P-GW sends the PCC and updates request message.
UE provided in an embodiment of the present invention has found dns server or service server failure by UE, and is executed by gateway
Fault detect can eat dishes without rice or wine to discharge and connect to avoid frequent, and frequent load bearing deactivation and activation, mitigate the letter of system
Expense is enabled, the stability of mobile network is enhanced.
The embodiment of the present invention 12：
The present embodiment provides a kind of communication systems, referring to Figure 12, including：
Gateway 1201 breaks down for finding with the relevant dns servers of UE or service server, goes to DNS clothes
The fault detect of business device or service server, after detecting fault recovery, notice UE is established and the dns server or business
The connection of server；
UE 1202 goes to the fault detect notice of dns server or service server for receiving gateway 1201；Institute
After stating fault recovery, receive the gateway 1201 transmission foundations connect with the dns server or service server lead to
Know, and establishes the connection with the 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 be to avoid frequently eating dishes without rice or wine to release
It puts and connects, and frequent load bearing deactivation and activation, mitigate the signaling overheads of system, enhance the stability of mobile network
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, apparatus embodiments described above are merely indicative, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, equipment or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the portion of each embodiment the method for the present invention
Step by step.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various to store
The medium of program code.Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than limits it
System；Although the present invention is described in detail referring to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its
Still can be with technical scheme described in the above embodiments is modified, or which part technical characteristic is equal
It replaces；And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (19)
1. a kind of fault detection method, which is characterized in that including：
User equipment (UE) is found and the relevant domain name system DNS servers of the UE or service server failure；
The UE notification gateways go to the fault detect of dns server or service server, and send and need to the gateway
Execute the dns server of fault detect or the address information of service server；
The UE receives the notification message that the gateway is sent after the fault recovery, according to notification message foundation and institute
State the connection of dns server or service server.
2. according to the method described in claim 1, it is characterized in that, the UE find with the relevant dns servers of the UE or
Service server failure, including：
The UE can not obtain the response of the dns server or the service server.
3. method according to claim 1 or 2, which is characterized in that the UE notification gateways go to dns server or industry
The fault detect of business server, including：
The UE sends update bearing request message to the gateway, wherein the update bearing request message is carried for referring to
Show that the gateway executes the mark of fault detect.
4. method according to claim 1 or 2, which is characterized in that the UE needs to execute failure to gateway transmission
The dns server of detection or the address information of service server, including：
The UE sends described address information by bearer update flow, to the gateway.
5. according to the method described in claim 4, it is characterized in that, the gateway be GPRS Support Node GGSN, the carrying
More new technological process includes：
The UE sends modification packet data protocol PDP Context request message to Serving GPRS Support Node SGSN, so that institute
It states SGSN and sends update PDP Context request message to the GGSN.
6. described according to the method described in claim 4, it is characterized in that, the gateway is grouped data network gateway P-GW
Bearer update flow includes：
The UE sends request bearing resource to mobility management entity MME and changes message, so that the MME is to gateway S-
GW sends bearing resource command messages,
The S-GW sends the bearing resource command messages or agent binding update messages to the P-GW, or, the S-GW
Request message is updated with charging rule functions PCRF sending strategy charging control PCCs and the PCRF is sent out to the P-GW to strategy
Send the PCC updates request message.
7. according to the method described in claim 3, it is characterized in that, the method further includes：
The UE receives the update bearing response message that the gateway is sent；
The UE stops DNS query or stops sending TCP connection foundation request.
8. method according to claim 1 or 2, which is characterized in that the notification message includes the DNS of recovered failure
The address information of server or service server.
9. method according to claim 1 or 2, which is characterized in that described address information includes：
The IP address of the dns server or service server or in port numbers at least one of；
Alternatively, the domain-name information of the dns server or service server.
10. method according to claim 1 or 2, which is characterized in that the method further includes：
The UE and the gateway interaction capabilities indicate information, and the capability indication information, which is used to indicate the gateway, has agency
UE carries out the ability of fault detect, or is used to indicate the UE and the gateway is supported to carry out fault detect.
11. according to the method described in claim 10, it is characterized in that, the UE and the gateway interaction capabilities indicate information,
Including：
The UE is in data channel Establishing process, or establishes default bearer flow or PDN connection building process or dedicated bearing
In Establishing process and the gateway interacts the capability indication information.
12. a kind of fault detection method, which is characterized in that including：
Gateway discovery and the relevant domain name system DNS server of user equipment (UE) or service server failure；
The gateway notifies the UE to stop DNS query or stop sending TCP connection foundation request, and goes to the DNS
The fault detect of server or service server；
After the fault recovery, the gateway sends a notification message to the UE, the notification message for the UE with it is described
The connection of dns server or service server is established.
13. according to the method for claim 12, which is characterized in that the gateway discovery and the relevant dns servers of UE or
Service server failure, including：
When the gateway by data packet detect DPI either data-flow detection DFI mechanism detect the UE carry out DNS query or
It sends TCP connection and establishes request, and when the UE does not receive response, dns server or business service described in the gateway discovery
Device failure.
14. method according to claim 12 or 13, which is characterized in that the method further includes：
The gateway sends at least one of following to the UE：UE described in the gateway proxy executes the instruction letter of fault detect
It ceases, UE described in the gateway proxy executes the dns server of fault detect or the address information of service server.
15. method according to claim 12 or 13, which is characterized in that the gateway goes to dns server or business
The fault detect of server, including：
The gateway sends DNS probe messages to the dns server, or sends connection foundation request to application server and disappear
Breath.
16. method according to claim 12 or 13, which is characterized in that the notification message includes recovered failure
The address information of dns server or service server.
17. according to the method for claim 16, which is characterized in that described address information includes：
The IP address of the dns server or service server or in port numbers at least one of；
Alternatively, the domain-name information of the dns server or service server.
18. method according to claim 12 or 13, which is characterized in that the method further includes：
The gateway indicates information with the UE interaction capabilities, and the capability indication information, which is used to indicate the gateway, has agency
UE carries out the ability of fault detect, or is used to indicate the UE and the gateway is supported to carry out fault detect.
19. according to the method for claim 18, which is characterized in that the gateway and the UE interaction capabilities indicate information,
Including：
The gateway is in data channel Establishing process, or establishes default bearer flow or PDN connection building process or proprietary hold
It carries in Establishing process, the capability indication information is interacted with the UE.
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| CN101656633A (en) * | 2008-08-21 | 2010-02-24 | 北京亿企通信息技术有限公司 | Method for testing network in instant messaging device |
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| CN1589545A (en) * | 2001-09-18 | 2005-03-02 | 艾利森公司 | Adaptive node selection |
| CN101656633A (en) * | 2008-08-21 | 2010-02-24 | 北京亿企通信息技术有限公司 | Method for testing network in instant messaging device |
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