CN1852301A - Overload coutrol method for next generation network - Google Patents
Overload coutrol method for next generation network Download PDFInfo
- Publication number
- CN1852301A CN1852301A CN200510103384.0A CN200510103384A CN1852301A CN 1852301 A CN1852301 A CN 1852301A CN 200510103384 A CN200510103384 A CN 200510103384A CN 1852301 A CN1852301 A CN 1852301A
- Authority
- CN
- China
- Prior art keywords
- message
- receiving terminal
- received
- sip message
- sip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
Creating a specific character string in advance, the method includes steps: when receiving first invitation message from a sending end, receiving end embeds the specific character string created in advance into destination tag of response message, and returns it back to the sending end. In procedure for controlling over loading, the receiving end detects whether there is the specific character string in received message in session initial protocol (SIP); if yes, carrying out post-treatment for the received SIP message; otherwise, discarding the received SIP message. The invention can determine whether the received message is a message built by new call. Not using too much system resources, the invention guarantees that Quality of service of already established calls is not influenced by procedure for controlling over loading.
Description
Technical field
The present invention relates to the load control technology of communication network, specially refer to a kind of in next generation network, transship (overload) control method.
Background technology
Session initiation protocol (SIP, Session Initial Protocol) is an application controls (signaling) agreement that puts forward by internet engineering task group (IETF), implication as its name representative, SIP is mainly used in initiation session, specifically, the Multimedia session process that SIP can be used for creating, revise and a plurality of participants that terminate participate in, it is one of core protocol of next generation network.
Sip message is based on text formatting, mainly comprises two types: request message and response message.Wherein, request message further comprises request row (Request Line), several message header (Header), null and message body; Response message further comprises statusline, several message header, null and message body.Also will comprise a method (method) field in the described request row, this field has determined the type and the purpose of request message.
In the application of reality, if the user of connecting system is more simultaneously, may appear at the situation of system loading overload, promptly the disposal ability of sip message receiving terminal is not enough to handle the sip message of all receptions.At this moment, in order to guarantee the normal operation of system, and do not influence the service quality (QoS) of having set up calling, the Session Initiation Protocol stack of receiving terminal need abandon by the message of overload control with excess load.
Can transship control by following two kinds of methods at present.
First kind: the control of transport layer (Transport Layer) overload.
In this overload controlling method, if during server overload, transport layer will be judged the method field in the reception sip message request row, if this message is the conversation initial request message, for example, the method field of this message is to invite (Invite) or reservation (Subscribe), then refuses this request, and the sip message that receives is abandoned.It is very simple that the overload of this transport layer is controlled needed processing, and therefore, it is also considerably less that overload is controlled required server resource.Yet in the application of reality, situations such as medium variation or session timeout have appearred in conversation procedure through regular meeting, and at this moment, call-originating end will heavily invite (Re-Invite) message to the calling receiving terminal by sending, and continues the calling of having set up.But, because the method field of Re-Invite message also is Invite, therefore, it is the corresponding callings of having set up that the method for above-mentioned transport layer overload control can't identify these Re-Invite message, and they are judged to be the message that produces into new calling, and these Re-Invite message are abandoned, like this, will cause having set up the interruption of calling, thereby have a strong impact on the QoS that sets up calling.
Second kind: the control of transaction layer (Transaction Layer) overload.
In this overload controlling method, transport layer will not transshipped control, and the sip message that receives is directly uploaded to transaction layer, transaction layer will be resolved the sip message that receives, judge whether this message is the message that produces for new calling, if be the message that new calling produces, transaction layer will trigger the control of transaction layer overload this message will be abandoned.Which message is the method for above-mentioned this transaction layer overload control can identify accurately is the corresponding message of calling of having set up, and which message is the message that produces for new calling, thereby can fully guarantee to have set up the QoS of calling in overload control.But in order to judge whether the message that is received is the message that produces for new calling, transaction layer needs at first the message that is received to be resolved, and then the message after resolving is carried out processing such as affairs coupling, judges just can make accurately.Yet, this message parse and affairs matching process will take the resource of server 30%～40%, if the overload of system is very serious, overload control will take more system resource, thereby cause system overload more serious, cause the time delay of existing call, overtime and sharply increase of message re-transmission, and finally enter vicious circle, seriously influenced the performance of system.
Summary of the invention
In order to solve the technical problem that prior art exists, the invention provides a kind of method of controlling of transshipping, can judge the message that received apace and whether be message for new call setup, and can not take the resource of too many system, the service quality that guarantees to have set up calling can not be subjected to transshipping the influence of control.
The method of controlling of transshipping in next generation network of the present invention generates a specific character string in advance, comprises following two parallel steps:
A, after receiving terminal receives the invitation message that certain transmitting terminal sends first, the specific character string that generates in advance is embedded in the purpose label of response message, return described transmitting terminal;
A, in the overload control procedure, receiving terminal detects whether there is the specific character string that generates in advance in the session initiation protocol sip message received, if having, then the sip message that is received is carried out subsequent treatment, otherwise, abandon the sip message that is received.
Specific character string of the present invention is for using configuration of SIP B2BUA or label generating algorithm character string that generate, that probability of occurrence is less.
Steps A of the present invention further comprised before receiving terminal detects the specific character string that whether has generation in advance in the session initiation protocol sip message that is received: A0, receiving terminal judge whether current system is in overload, if, then continue execution in step A, otherwise, the reception sip message is carried out subsequent treatment.
Steps A of the present invention further comprised before receiving terminal detects the specific character string that whether has generation in advance in the session initiation protocol sip message that is received: A1, receiving terminal judge whether received message is invitation message, reservation message or registration message, if, then continue execution in step A, otherwise, the sip message that is received is carried out subsequent treatment.
Receiving terminal of the present invention judge received message whether be invitation message, reservation message or registration message by: receiving terminal resolve the method field in the reception sip message request row, judge according to this method field whether this sip message is invitation message, reservation message or registration message.
Receiving terminal of the present invention judge received message whether be invitation message, reservation message or registration message by: receiving terminal judge the first letter of reception sip message text, if this letter is I, judge that then this sip message is an invitation message; If this letter is S, judge that then this sip message is a reservation message; If this letter is R, judge that then this message is registration message.
Whether whether the described receiving terminal of steps A detect and exist the specific character string that generates in advance to adopt string matching algorithm to detect to be received in the sip message by: receiving terminal in the session initiation protocol sip message that is received and generate specific character string characters matched string in advance.
Whether having the specific character string operation that generates in advance in the session initiation protocol sip message that the described receiving terminal detection of steps A is received is to be undertaken by the transport layer of receiving terminal Session Initiation Protocol stack;
Steps A is described carries out subsequent treatment to the sip message that is received and comprises:
The transport layer of A2, receiving terminal Session Initiation Protocol stack uploads to transaction layer with the sip message that is received;
A3, described transaction layer carry out the control operation of transaction layer overload, are discarded as the sip message that new calling generates.
Transaction layer overload of the present invention control comprises:
The sip message that the transaction layer of A31, receiving terminal is uploaded transport layer is resolved;
A32, after parsing each message header of this sip message, according to source user and the label that each message header comprised, the information list of setting up calling that purpose user and label and call identification information inquiry self preserved, if there is identical information, then judge it is the corresponding message of calling of having set up, otherwise, judge that this message is the message that generates for new calling.
The method of the invention further comprises: transmitting terminal sends to described receiving terminal with the purpose label as the first message header in this sip message when sending sip message.
Embed Magic String among the purpose label ToTag of the sip message of method of the present invention by having set up calling in correspondence and identify and correspondingly set up the sip message of calling, thereby receiving terminal can directly be realized overload control by character match.Problems such as this method has solved existing transport layer overload controlling method on the one hand and called out the bigger problem of QoS influence to setting up, has also solved existing transaction layer overload controlling method on the other hand, and occupying system resources is more, and time delay is bigger.
Description of drawings
Fig. 1 is the described overload controlling method flow chart of the preferred embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make invention is clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
According to the Session Initiation Protocol regulation, when the originating end of session makes a call, will generate a source label F rom Tag, and this source label F rom Tag be sent to receiving terminal by the Invite message that sends first.Receiving terminal also will generate a purpose label To Tag after receiving described Invite message, and this purpose label To Tag is sent to described originating end by response message.Described From Tag and To Tag are controlled by the Session Initiation Protocol stack of transmitting terminal and receiving terminal respectively to produce, and remain unchanged in the whole session process.
Based on above regulation, the invention provides a kind of overload controlling method, this method is to utilize the label of Session Initiation Protocol regulation to realize that its core concept is: generate a specific character string in advance, be called Magic String, be used to identify the corresponding sip message of calling of having set up.For example, the MagicString that is generated can be sh7u3r6yt79re.Receive the first Invite message of certain transmitting terminal transmission at receiving terminal after, the Magic String that generates in advance is embedded among the purpose label To Tag that self generates, and this purpose label To Tag will turn back to transmitting terminal as the response message of one of message header by described Invite message then.For example, the purpose label To Tag that receiving terminal generates can be the sequence number that the MagicString that generated adds this session, and hypothetical sequence number is 314159, and the purpose label To Tag that is then generated just will be sh7u3r6yt79re314159.Like this, in conversation procedure after this, SIP request and response message that described transmitting terminal and receiving terminal send all will carry this purpose label To Tag, so, described transmitting terminal and receiving terminal just can by judging among the described purpose label To Tag whether carried Magic String, for example, in the sip message that receives, detect whether there is sh7u3r6yt79re, detect whether the message that is received is that correspondence has been set up the sip message of calling.
Those of ordinary skill in the art are appreciated that, in order to identify the corresponding sip message of calling of having set up better, avoid also can occurring for the sip message of new call setup the cas fortuit of the character string identical with Magic String, the Magic String that is generated should be the character string special, that probability of occurrence is very little.In a preferred embodiment of the invention, can use the configuration of SIP B2BUA or other algorithms that generates label to generate described Magic String.
Fig. 1 has shown the described overload controlling method flow chart of the preferred embodiment of the present invention.As shown in Figure 1, the described overload controlling method of present embodiment mainly comprises:
Steps A: receiving terminal judges at first after receiving sip message whether current system is in overload, if, execution in step B then, otherwise, do not need to transship control, finish this flow process.
This step is described to be judged whether to be in overload and can adopt multiple existing mechanism to realize, for example, can be by the operating position of inquiry receiving terminal central processing unit, the time-delay of message, or the size of queuing message formation in the protocol stack or the like condition judges whether current system is in overload.When system overload, the Session Initiation Protocol stack that the overload control module of system will trigger receiving terminal carries out following overload control operation.
Step B: the transport layer of receiving terminal Session Initiation Protocol stack judges whether received message is to invite (Invite) message, reservation (Subscribe) message or registration (Resister) message, if, execution in step C then, otherwise, received message is not transshipped control, execution in step D.
Stipulate according to Session Initiation Protocol, for the request message of new call setup only may be Invite, Subscribe or Register message, therefore, whether the preferred embodiment of the present invention at first detected the message that is received before the string matching of carrying out Magic String be Invite, Subscribe or Register message, if, carry out string matching again, if not, judge directly that then this sip message is the corresponding sip message of calling of having set up.By the scope that the operation of this step can further reduce to carry out string matching, simplify overload control operation process.
Be appreciated that but the operation of this step only is the selection operation that improves the overload control performance, therefore, also can skip this step, directly all sip messages that received are carried out the described MagicString character string of following step C detecting operation.
This step is described judge received message whether by invite or reservation message can by resolve the method field in the reception sip message request row whether be that Invite, Subscriber or Register judge.
Stipulate according to Session Initiation Protocol, first field in the sip message request row is exactly the method field, based on this point, in a preferred embodiment of the invention, can directly judge the first letter of received message request row, the first letter of received message just was if should just judge for " I " that this message was Invite message by letter, if should just judge for " S " that this message was Subscriber message by letter, just judge that this message was Register message if this letter is " R ".
Because the described method of present embodiment only needs to judge the initial of received message request row, and does not need to judge the entire method field, therefore can further reduce required time of overload control and shared system resource.
Step C: whether comprise the specific character string Magic String that generates in advance in the transport layer sequence detection received message of receiving terminal Session Initiation Protocol stack, if have, judge that then received message is corresponding set up the sip message of calling, execution in step D then, otherwise, execution in step E.
The method that whether comprises in advance the specific character string MagicString that generates in the described detection received message of this step by: adopt character string matching method detect whether the character string that is complementary with MagicString is arranged in the reception sip message.
Because Session Initiation Protocol is not stipulated the order of each message header in the sip message, therefore, in order further to reduce the time that receiving terminal detects Magic String, can can guarantee that like this receiving terminal detects the corresponding sip message of calling of having set up in the shortest time with the purpose label as first message header in the sip message.
Step D: this message is uploaded to transaction layer handle.
Though the generation method of the described Magic String of the preferred embodiment of the present invention can guarantee to occur the probability of the character string identical with Magic String substantially in the sip message that produces for new calling very little,, can not get rid of the generation of this situation.In order further to improve the accuracy of flow control, under the situation of system overload, can further carry out the control of existing transaction layer overload at the transaction layer of receiving terminal Session Initiation Protocol stack.
Described transaction layer is associated to control and mainly comprised: the transaction layer of receiving terminal is at first resolved the sip message that transport layer is uploaded; After parsing each message header of this sip message, according to source user and the label that each message header comprised, the information list of setting up calling that purpose user and label and call identification information searchings self such as (Call ID) is preserved, if have the information identical with the information of parsing described foundation in the call information tabulation, then judge it is the corresponding message of calling of having set up, otherwise, judge that this message is the message that generates for new calling, and abandon this sip message.
Step e is judged that the message that is received is the sip message that generates for new calling, and is abandoned the sip message that is received.
This shows, the described method of present embodiment embeds Magic String in correspondence has been set up the purpose label To Tag of sip message of calling, like this, when system overload, the transport layer of receiving terminal Session Initiation Protocol stack can detect the corresponding sip message of calling of having set up by the character match method, thereby realizes overload control.Problems such as this method has solved existing transport layer overload controlling method on the one hand and called out the bigger problem of QoS influence to setting up, has also solved existing transaction layer overload controlling method on the other hand, and occupying system resources is more, and time delay is bigger.
Claims (10)
1, a kind of method of controlling of transshipping in next generation network is characterized in that described method generates a specific character string in advance, comprises following two parallel steps:
A, after receiving terminal receives the invitation message that certain transmitting terminal sends first, the specific character string that generates in advance is embedded in the purpose label of response message, return described transmitting terminal;
A, in the overload control procedure, receiving terminal detects whether there is the specific character string that generates in advance in the session initiation protocol sip message received, if having, then the sip message that is received is carried out subsequent treatment, otherwise, abandon the sip message that is received.
2, the method for claim 1 is characterized in that, described specific character string is for using SIPB2BUA configuration or label generating algorithm character string that generate, that probability of occurrence is less.
3, the method for claim 1, it is characterized in that, described steps A further comprised before receiving terminal detects the specific character string that whether has generation in advance in the session initiation protocol sip message that is received: A0, receiving terminal judge whether current system is in overload, if, then continue execution in step A, otherwise, the reception sip message is carried out subsequent treatment.
4, as claim 1 or 3 described methods, it is characterized in that, described steps A further comprised before receiving terminal detects the specific character string that whether has generation in advance in the session initiation protocol sip message that is received: A1, receiving terminal judge whether received message is invitation message, reservation message or registration message, if, then continue execution in step A, otherwise, the sip message that is received is carried out subsequent treatment.
5, method as claimed in claim 4, it is characterized in that, described receiving terminal judge received message whether be invitation message, reservation message or registration message by: receiving terminal resolve the method field in the reception sip message request row, judge according to this method field whether this sip message is invitation message, reservation message or registration message.
6, method as claimed in claim 4, it is characterized in that, described receiving terminal judge received message whether be invitation message, reservation message or registration message by: receiving terminal judge the first letter of reception sip message text, if this letter is I, judge that then this sip message is an invitation message; If this letter is S, judge that then this sip message is a reservation message; If this letter is R, judge that then this message is registration message.
7, the method for claim 1, it is characterized in that the described receiving terminal of steps A detects and whether exists the specific character string that generates in advance whether to adopt string matching algorithm to detect to be received in the sip message by: receiving terminal in the session initiation protocol sip message that is received and generate specific character string characters matched string in advance.
8, the method for claim 1 is characterized in that, whether having the specific character string operation that generates in advance in the session initiation protocol sip message that the described receiving terminal detection of steps A is received is to be undertaken by the transport layer of receiving terminal Session Initiation Protocol stack;
Steps A is described carries out subsequent treatment to the sip message that is received and comprises:
The transport layer of A2, receiving terminal Session Initiation Protocol stack uploads to transaction layer with the sip message that is received;
A3, described transaction layer carry out the control operation of transaction layer overload, are discarded as the sip message that new calling generates.
9, method as claimed in claim 8 is characterized in that, the control of described transaction layer overload comprises:
The sip message that the transaction layer of A31, receiving terminal is uploaded transport layer is resolved;
A32, after parsing each message header of this sip message, according to source user and the label that each message header comprised, the information list of setting up calling that purpose user and label and call identification information inquiry self preserved, if there is identical information, then judge it is the corresponding message of calling of having set up, otherwise, judge that this message is the message that generates for new calling.
10, the method for claim 1 is characterized in that, described method further comprises: transmitting terminal sends to described receiving terminal with the purpose label as the first message header in this sip message when sending sip message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100260565A CN100466656C (en) | 2005-09-20 | 2005-09-20 | Overload coutrol method for next generation network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100260565A CN100466656C (en) | 2005-09-20 | 2005-09-20 | Overload coutrol method for next generation network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1852301A true CN1852301A (en) | 2006-10-25 |
| CN100466656C CN100466656C (en) | 2009-03-04 |
Family
ID=37133769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100260565A Expired - Fee Related CN100466656C (en) | 2005-09-20 | 2005-09-20 | Overload coutrol method for next generation network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100466656C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065252A1 (en) * | 2007-11-21 | 2009-05-28 | Lucent Technologies Inc. | A method and a device for controlling the overload on the network service device |
| CN101369971B (en) * | 2008-10-15 | 2010-11-10 | 南京邮电大学 | Overload control method for conversation launching protocol signaling network |
| WO2012152017A1 (en) * | 2011-09-23 | 2012-11-15 | 中兴通讯股份有限公司 | Trigger message sending method and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7369493B2 (en) * | 2003-10-28 | 2008-05-06 | At&T Corp. | Congestion control in an IP network |
| US7701854B2 (en) * | 2003-11-17 | 2010-04-20 | International Business Machines Corporation | Differentiated handling of SIP messages for VoIP call control |
-
2005
- 2005-09-20 CN CNB2005100260565A patent/CN100466656C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065252A1 (en) * | 2007-11-21 | 2009-05-28 | Lucent Technologies Inc. | A method and a device for controlling the overload on the network service device |
| CN101816159B (en) * | 2007-11-21 | 2016-02-17 | 朗讯科技公司 | For the method and apparatus of network server device premature beats |
| CN101369971B (en) * | 2008-10-15 | 2010-11-10 | 南京邮电大学 | Overload control method for conversation launching protocol signaling network |
| WO2012152017A1 (en) * | 2011-09-23 | 2012-11-15 | 中兴通讯股份有限公司 | Trigger message sending method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100466656C (en) | 2009-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1961591A (en) | Session control using a multicast address | |
| US7586903B2 (en) | System and method for VoIP call transfer using instant message service in an IP multimedia subsystem | |
| US7877487B2 (en) | Dynamic service triggers in communication networks | |
| US8209432B2 (en) | Method and arrangement for communicating multimedia content | |
| CN1617511A (en) | Conversation Qo S controller | |
| CN1640053A (en) | System and method of billing based on the reported traffic load in a packet-oriented telecommunications network | |
| CN1499804A (en) | Method of processing session information of session initiating agreement system, and its recording medium | |
| CN1762139A (en) | Request redirection handling in IMC | |
| CN1421081A (en) | Method and system for dynamic gateway selection in IP telephony network | |
| CN1319983A (en) | Communication quality guaranteed internet telephone system and route creation method | |
| CN1845547A (en) | Specific stream redirection of a multimedia telecommunication | |
| CN1925525A (en) | Method for realizing bridged collection of IP multimedia subsystem | |
| CN101080041A (en) | A method for establishing communication service connection in communication system | |
| CN101039203A (en) | Access equipment, conference access method and conference service system | |
| CN1852301A (en) | Overload coutrol method for next generation network | |
| CN1293736C (en) | System and method for network address translation and session management | |
| EP1962464A1 (en) | Method, communication system and entity for overlap code sending using session initiation protocol | |
| CN1440610A (en) | Method and system for dynamic gateway selection in IP telephony network | |
| CN1642117A (en) | Method for realizing monitoring based on soft switch | |
| CN1666549A (en) | Avoidance of an invalid functioning of a media gateway controller or a media gateway | |
| CN1838673A (en) | Method for establishing useful data connection between terminals | |
| CN1832471A (en) | Method of communicating between different protocal of terminal user interface of IP multimedia subsystem | |
| CN1859278A (en) | Medium data packet tansfer method for multiway communication service | |
| CN1767527A (en) | Method for controlling SIP server congestion | |
| CN1750505A (en) | Method for identifying sender based on real-time transmission protocol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20130920 |