CN104869027A - Link detection method and access equipment - Google Patents
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Abstract
The invention discloses a link detection method and access equipment. The method comprises the steps that A) whether the access equipment is registered in the IMS core network is detected, if no, a step B) is turned to, and otherwise, a step E) is turned to; B) a link detection message with a preset domain name is sent; C) whether a response message is received is detected, if no, the step B) is turned to, and otherwise, a step D) is turned to; D) SBC identification information by inquiring the preset domain name is obtained and stored, and a step I) is carried out; E) if SBC identification information of the highest priority is not read, the step B) is carried out, and if SBC identification information of the highest priority is read, a step F) is turned to; F) a link detection message with identification information is sent; G) whether a response message is received is detected, if yes, the step I) is carried out, and otherwise, a step H ) is carried out; H) SBC identification information read in an available SBC list is deleted; and I) the flow is completed. Thus, the network load is reduced, and the network safety is improved.
Description
Technical field
The present invention relates to communication technical field, espespecially a kind of chain circuit detecting method and access device.
Background technology
Internet protocol multi-media sub-system (Internet Protocol Multimedia Subsystem, IMS) home subscriber server (Home Subscriber Server is mainly comprised in core net, HSS), Proxy Call Session Control Function (Proxy-Call Session Control Function, P-CSCF), enquiry call conversation control function (Inquiry-Call Session Control Function, I-CSCF), service call conversation control function (Service-Call Session Control Function, S-CSCF), Session Border Controller (SessionBorder Controller, the network element such as SBC), judge that whether the link obtained between this network element and adjacent network element is normal by regularly sending link detecting message (OPTIONS) between different network elements, it is whether reasonable that the header field of OPTIONS is arranged, to directly affect load and the fail safe of IMS core net.At present, the link methodology that access device detects between SBC mainly contains following two kinds:
The first, when multiple stage SBC shares the regional IMS business of carrying one, generally can introduce SBC Disaster Tolerant Scheme, need the header field of OPTIONS to be configured to this province domain name.In third generation partner program (3
rdgeneration Partnership Project, 3GPP) in specification, process for OPTIONS is equal to message related to calls, the OPTIONS message initiated by access device is transmitted between each network element of IMS core net after SBC, as shown in Figure 1, according to the response message that SBC returns, access device determines that whether link is normal, the response message shown in Fig. 1 is 404NOT FOUND.
Internet protocol (the Internet Protocol of SBC of this mode without the need to registering according to access device, IP) identification information such as address or Hostname does provisional configuration, the access device of the different SBC area of coverage of province can use identical configuration, is conducive to the consistency and the normalization that ensure whole network data.But, header field due to OPTIONS is domain name, this message is caused to be transmitted in IMS core net, the network element of process is followed successively by SBC-PCSCF-SCSCF-ICSCF-HSS as shown in Figure 1, it is whether link in order to detect between SBC is normal that access device sends the object of OPTIONS, the OPTIONS sent from SBC is useless message, in the IMS core net of a province, the quantity of access device is normally in ten thousand, if the OPTIONS that every platform access device sends all transmits in IMS core net, useless OPTIONS and response message can cause IMS core net load pressure excessive.
The second, the IP address or hostname of the SBC of registration is only claimed the header field waiting identification information as OPTIONS by access device, then OPTIONS is sent to the SBC of registration, flow process as shown in Figure 2, according to whether receiving the response message that SBC returns, access device can determine that whether link is normal, the response message shown in Fig. 2 is 200ok.The OPTIONS of this mode does not need to transmit in IMS core net, decreases IMS network load.But when multiple stage SBC shares the regional IMS business of carrying one, identification information is different to need the IP address or hostname of the SBC configured to claim in different access device etc., and this will increase the complexity of data management; Meanwhile, as current SBC delays after machine, access device cannot be registered to other SBC equipment, has a strong impact on the works fine of SBC disaster tolerance, reduces internet security.
Therefore, current chain circuit detecting method can not guarantee the fail safe of IMS core net and the reasonability of load simultaneously.
Summary of the invention
The embodiment of the present invention provides a kind of chain circuit detecting method and access device, can not guarantee the fail safe of IMS core net and the rational problem of load in order to solve existing chain circuit detecting method simultaneously.
Therefore, provide a kind of chain circuit detecting method according to the embodiment of the present invention, comprising:
Whether A, detection access device are registered in internet protocol multi-media sub-system IMS core net, if unregistered, perform B; If registered, perform E;
B, send and carry the link detecting message of default domain name;
Whether C, detection receive the response message that Session Border Controller SBC returns, if do not receive, perform B; If receive, perform D; Described response message is for notifying that described access device to succeed in registration and link between described access device and described SBC is normal at described SBC;
The identification information of the SBC that D, acquisition domain name system DNS arrive according to described default inquiry of the domain name, and according to setting rule, the identification information of the SBC got is stored in available SBC list with different priorities, perform I;
E, read the identification information of the highest SBC of described available SBC list medium priority, if do not read, perform B; If read, perform F;
F, send and carry the link detecting message of the identification information of the SBC read;
G, detect the response message whether receiving SBC corresponding to the identification information of the SBC read and return, if receive, perform I; If do not receive, perform H;
H, delete the identification information of the SBC read in described available SBC list, perform E;
I, process ends.
Concrete, according to setting rule, the identification information of the SBC got is stored in available SBC list with different priorities, specifically comprises:
The identification information of the SBC that described access device is registered as the identification information storage of the highest SBC of priority in described available SBC list;
Other identification information except the identification information of the SBC that the identification information of the SBC got is registered except described access device according to the priority order randomly ordered after be stored in described available SBC list.
Optionally, after G, before H, also comprise:
J, record do not receive the number of times that SBC corresponding to the identification information of the SBC read returns response message, and judge whether described number of times is greater than setting threshold, if so, performs H; Otherwise, perform F.
Concrete, the identification information of the SBC in described available SBC list comprises internet protocol address or the Hostname of SBC.
A kind of access device is also provided, comprises:
Whether the first detecting unit, register for the access device detecting self place, if unregistered, turn to the first transmitting element in internet protocol multi-media sub-system IMS core net; If registered, turn to reading unit;
Described first transmitting element, for sending the link detecting message of carrying default domain name;
Second detecting unit, for detecting the response message whether receiving Session Border Controller SBC and return, if do not receive, turns to described first transmitting element; If receive, turn to memory cell; Described response message is for notifying that described access device to succeed in registration and link between described access device and described SBC is normal at described SBC;
Described memory cell, for obtaining the identification information of the SBC that domain name system DNS arrives according to described default inquiry of the domain name, and being stored in the identification information of the SBC got in available SBC list with different priorities according to setting rule, turning to end unit;
Reading unit, for reading the identification information of the highest SBC of described available SBC list medium priority, if do not read, turns to described first transmitting element; If read, turn to the second transmitting element;
Described second transmitting element, for sending the link detecting message of the identification information carrying the SBC read;
3rd detecting unit, for detecting the response message that SBC corresponding to the identification information that whether receives the SBC read returns, if receive, turns to described end unit; If do not receive, turn to delete cells;
Described delete cells, for deleting the identification information of the SBC read in described available SBC list, turns to described reading unit;
Described end unit, for process ends.
Concrete, described memory cell, for the identification information of the SBC got being stored in available SBC list with different priorities according to setting rule, specifically for:
The identification information of the SBC that described access device is registered as the identification information storage of the highest SBC of priority in described available SBC list;
Other identification information except the identification information of the SBC that the identification information of the SBC got is registered except described access device according to the priority order randomly ordered after be stored in described available SBC list.
Optionally, also comprise judging unit, for:
Record the number of times that SBC corresponding to identification information that described 3rd detecting unit do not receive the SBC read returns response message, and judge whether described number of times is greater than setting threshold, if so, turn to described delete cells; Otherwise, turn to described second transmitting element.
Concrete, the identification information of the SBC in described available SBC list comprises internet protocol address or the Hostname of SBC.
The chain circuit detecting method that the embodiment of the present invention provides and access device, by after access device first time successful registration to IMS network, the identification information of the SBC got is stored in available SBC list with different priorities, when follow-up initiation link detecting message, the identification information that just can obtain the highest SBC of priority from available SBC list is carried in link detecting message, thus link detecting message landing at SBC can be realized, avoid useless link detecting message and response message transmits in IMS core net, and owing to storing the identification information according to presetting the SBC that inquiry of the domain name is arrived in available SBC list, thus ensure the correct realization of SBC disaster tolerance, the program all achieves larger lifting in minimizing network load and raising internet security.
Accompanying drawing explanation
Fig. 1 is the flow chart of the first chain circuit detecting method in prior art;
Fig. 2 is the flow chart of the second chain circuit detecting method in prior art;
Fig. 3 is the flow chart of embodiment of the present invention link detection method;
Fig. 4 is the structural representation of access device in the embodiment of the present invention.
Embodiment
The fail safe of IMS core net and the rational problem of load can not be guaranteed for existing chain circuit detecting method simultaneously, the embodiment of the present invention provides a kind of chain circuit detecting method, the executive agent of the method is access device, and flow process as shown in Figure 3, performs step as follows:
S30: detect access device and whether register in IMS core net, if unregistered, performs S31; If registered, perform S34.
When access device accesses IMS net first, testing result is unregistered.
S31: send the link detecting message of carrying default domain name.
When detecting that access device is not yet registered in IMS core net, the link detecting message of carrying default domain name can be sent.Default domain name can be the domain name of current province domain name, current locale domain name etc. acquiescence, this link detecting message can through domain name system (Domain Name System, DNS), DNS according to presetting the identification information of all SBC of inquiry of the domain name, then to these SBC conversion link detect-message.Wherein, the IP address or hostname that the identification information of SBC comprises SBC claims etc.
S32: detect the response message whether receiving SBC and return, if do not receive, performs S31; If receive, perform S33; Response message is for notifying that access device to succeed in registration and link between access device and SBC is normal at SBC.
The SBC receiving link detecting message can return response message to access device, multiple SBC may be had and return response message to access device, but the SBC that access device can be corresponding using first response message received is as the SBC of registration, the link between the SBC that also can determine and send this response message according to the response message received is normal.
S33: obtain DNS according to the identification information presetting the SBC that inquiry of the domain name is arrived, and according to setting rule, the identification information of the SBC got is stored in available SBC list with different priorities, perform S38.
Because DNS has arrived the identification information of all available SBC according to default inquiry of the domain name, the identification information of these SBC of rale store can have been set, in order to follow-up carry out link detecting time use.
Owing to detecting that the link between access device and the SBC registered is normal, the link detecting in this sense cycle just completes, and after can waiting for that next sense cycle is come, re-starts link detecting.Sense cycle can set according to actual needs, such as, be set as 10s, 15s, 20s etc.
S34: the identification information reading the highest SBC of available SBC list medium priority, if do not read, performs S31; If read, perform S35.
If detect that access device is registered in IMS core net, from available SBC list, directly can read the identification information of the highest SBC of priority, if do not read, prove can be now empty with SBC list, need to re-execute S31.
S35: send the link detecting message of carrying the identification information of the SBC read.
The identification information of the SBC read is carried in link detecting message as header field, that is sends link detecting message directly to the SBC that the identification information of the SBC read is corresponding.
S36: detect the response message whether receiving SBC corresponding to the identification information of the SBC read and return, if receive, perform S38; If do not receive, perform S37.
If the response message that the SBC that the identification information receiving the SBC of reading is corresponding returns, just can determine that the link between the SBC that access device is corresponding with the identification information of the SBC read is normal, link detecting in this sense cycle just completes, after can waiting for that next sense cycle is come, re-start link detecting.
S37: the identification information deleting the SBC read in available SBC list, performs S34.
If the response message that the SBC that the identification information not receiving the SBC of reading in latent period is corresponding returns, just can determine that the link between the SBC that access device is corresponding with the identification information of the SBC read is abnormal, need the identification information deleting the SBC read, the priority level of the identification information of the SBC in available like this SBC list also there occurs variation, originally prioritization is called the identification information of the SBC that priority is the highest at the identification information of deputy SBC, and the identification information then again reading SBC from available SBC list carries out link detecting.
Wherein latent period can set according to actual needs, such as, be set as 3s, 5s, 7s, 10s etc.
S38: process ends.
The program is by after access device first time successful registration to IMS network, the identification information of the SBC got is stored in available SBC list with different priorities, when follow-up initiation link detecting message, the identification information that just can obtain the highest SBC of priority from available SBC list is carried in link detecting message, thus link detecting message landing at SBC can be realized, avoid useless link detecting message and response message transmits in IMS core net, and owing to storing the identification information according to presetting the SBC that inquiry of the domain name is arrived in available SBC list, thus ensure the correct realization of SBC disaster tolerance, the program all achieves larger lifting in minimizing network load and raising internet security.
Concrete, being stored in available SBC list with different priorities by the identification information of the SBC got according to setting rule in above-mentioned S33, specifically comprises:
The identification information of the SBC that access device is registered as the identification information storage of the highest SBC of priority in available SBC list;
Other identification information except the identification information of the SBC that the identification information of the SBC got is registered except access device according to the priority order randomly ordered after be stored in available SBC list.
Optionally, after above-mentioned S36, before S37, also comprise:
Record and judge whether number of times is greater than setting threshold, if so, performs S37; Otherwise, perform S35.
In order to ensure the generation of judging by accident in link detecting process, the number of times that SBC corresponding to the identification information that do not receive the SBC read returns response message can be recorded, once this number of times is greater than the identification information that setting threshold just deletes the SBC read in available SBC list.
Wherein, set point number can set according to actual needs, such as, be set as 3 times, 4 times, 5 times etc.
Based on same inventive concept, the embodiment of the present invention provides a kind of access device, and the structure of this access device as shown in Figure 4, comprising:
Whether the first detecting unit 40, register for the access device detecting self place in IMS core net, if unregistered, turns to the first transmitting element 41; If registered, turn to reading unit 44.
First transmitting element 41, for sending the link detecting message of carrying default domain name.
Second detecting unit 42, for detecting the response message whether receiving SBC and return, if do not receive, turns to the first transmitting element 41; If receive, turn to memory cell 43; Response message is for notifying that access device to succeed in registration and link between access device and SBC is normal at SBC.
Memory cell 43, for obtaining DNS according to the identification information presetting the SBC that inquiry of the domain name is arrived, and being stored in the identification information of the SBC got in available SBC list with different priorities according to setting rule, turning to end unit 48.
Reading unit 44, for reading the identification information of the highest SBC of available SBC list medium priority, if do not read, turns to the first transmitting element 41; If read, turn to the second transmitting element 45.
Second transmitting element 45, for sending the link detecting message of the identification information carrying the SBC read.
3rd detecting unit 46, for detecting the response message that SBC corresponding to the identification information that whether receives the SBC read returns, if receive, turns to end unit 48; If do not receive, turn to delete cells 47.
Delete cells 47, for deleting the identification information of the SBC read in available SBC list, turns to reading unit 44.
End unit 48, for process ends.
Concrete, memory cell 43, for the identification information of the SBC got being stored in available SBC list with different priorities according to setting rule, specifically for:
The identification information of the SBC that access device is registered as the identification information storage of the highest SBC of priority in available SBC list;
Other identification information except the identification information of the SBC that the identification information of the SBC got is registered except access device according to the priority order randomly ordered after be stored in available SBC list.
Optionally, also comprise judging unit, for:
Record the 3rd detecting unit and do not receive the number of times that SBC corresponding to the identification information of the SBC read returns response message, and judge whether number of times is greater than setting threshold, if so, turns to delete cells; Otherwise, turn to the second transmitting element.
Concrete, the IP address or hostname that the identification information of the SBC in available SBC list comprises SBC claims.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe optional embodiment of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a chain circuit detecting method, is characterized in that, comprising:
Whether A, detection access device are registered in internet protocol multi-media sub-system IMS core net, if unregistered, perform B; If registered, perform E;
B, send and carry the link detecting message of default domain name;
Whether C, detection receive the response message that Session Border Controller SBC returns, if do not receive, perform B; If receive, perform D; Described response message is for notifying that described access device to succeed in registration and link between described access device and described SBC is normal at described SBC;
The identification information of the SBC that D, acquisition domain name system DNS arrive according to described default inquiry of the domain name, and according to setting rule, the identification information of the SBC got is stored in available SBC list with different priorities, perform I;
E, read the identification information of the highest SBC of described available SBC list medium priority, if do not read, perform B; If read, perform F;
F, send and carry the link detecting message of the identification information of the SBC read;
G, detect the response message whether receiving SBC corresponding to the identification information of the SBC read and return, if receive, perform I; If do not receive, perform H;
H, delete the identification information of the SBC read in described available SBC list, perform E;
I, process ends.
2. the method for claim 1, is characterized in that, is stored in available SBC list by the identification information of the SBC got, specifically comprises according to setting rule with different priorities:
The identification information of the SBC that described access device is registered as the identification information storage of the highest SBC of priority in described available SBC list;
Other identification information except the identification information of the SBC that the identification information of the SBC got is registered except described access device according to the priority order randomly ordered after be stored in described available SBC list.
3. the method for claim 1, is characterized in that, after G, before H, also comprises:
J, record do not receive the number of times that SBC corresponding to the identification information of the SBC read returns response message, and judge whether described number of times is greater than setting threshold, if so, performs H; Otherwise, perform F.
4. the method as described in as arbitrary in claim 1-3, it is characterized in that, the identification information of the SBC in described available SBC list comprises internet protocol address or the Hostname of SBC.
5. an access device, is characterized in that, comprising:
Whether the first detecting unit, register for the access device detecting self place, if unregistered, turn to the first transmitting element in internet protocol multi-media sub-system IMS core net; If registered, turn to reading unit;
Described first transmitting element, for sending the link detecting message of carrying default domain name;
Second detecting unit, for detecting the response message whether receiving Session Border Controller SBC and return, if do not receive, turns to described first transmitting element; If receive, turn to memory cell; Described response message is for notifying that described access device to succeed in registration and link between described access device and described SBC is normal at described SBC;
Described memory cell, for obtaining the identification information of the SBC that domain name system DNS arrives according to described default inquiry of the domain name, and being stored in the identification information of the SBC got in available SBC list with different priorities according to setting rule, turning to end unit;
Reading unit, for reading the identification information of the highest SBC of described available SBC list medium priority, if do not read, turns to described first transmitting element; If read, turn to the second transmitting element;
Described second transmitting element, for sending the link detecting message of the identification information carrying the SBC read;
3rd detecting unit, for detecting the response message that SBC corresponding to the identification information that whether receives the SBC read returns, if receive, turns to described end unit; If do not receive, turn to delete cells;
Described delete cells, for deleting the identification information of the SBC read in described available SBC list, turns to described reading unit;
Described end unit, for process ends.
6. access device as claimed in claim 5, is characterized in that, described memory cell, for the identification information of the SBC got being stored in available SBC list with different priorities according to setting rule, specifically for:
The identification information of the SBC that described access device is registered as the identification information storage of the highest SBC of priority in described available SBC list;
Other identification information except the identification information of the SBC that the identification information of the SBC got is registered except described access device according to the priority order randomly ordered after be stored in described available SBC list.
7. access device as claimed in claim 5, is characterized in that, also comprise judging unit, for:
Record the number of times that SBC corresponding to identification information that described 3rd detecting unit do not receive the SBC read returns response message, and judge whether described number of times is greater than setting threshold, if so, turn to described delete cells; Otherwise, turn to described second transmitting element.
8. the access device as described in as arbitrary in claim 5-7, it is characterized in that, the identification information of the SBC in described available SBC list comprises internet protocol address or the Hostname of SBC.
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