CN1909523B - Detector, calling dialogue control system and method for detecting calling signal - Google Patents
Detector, calling dialogue control system and method for detecting calling signal Download PDFInfo
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- CN1909523B CN1909523B CN200610037088XA CN200610037088A CN1909523B CN 1909523 B CN1909523 B CN 1909523B CN 200610037088X A CN200610037088X A CN 200610037088XA CN 200610037088 A CN200610037088 A CN 200610037088A CN 1909523 B CN1909523 B CN 1909523B
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Abstract
The invention relates to a checking device which comprises a storage unit for storing the firs threshold valve for controlling the calling load and the threshold valve that higher than the first threshold valve, a stat unit for stating the calling load, and a check control unit for triggering the calling overload control when detecting present calling load reaches the first threshold valve, based on the stored calling load, and triggering the calling overload protection when the calling load reaches the second threshold valve. In addition, the invention also discloses a calling conversation control system and a relative method. The invention uses two judgments to trigger the calling overload protection of connecting unit, to improve the ability of network that processing calling in batch.
Description
Technical field
The present invention relates to network connection control field in the communications field, relate in particular to the method for a kind of detector, call session control system and detection of call signal.
Background technology
The effect of call session control system in whole communication system is the process user call information; Control action through the control unit in the system; Set up calling at the linkage unit place and connect, and effects such as call bearer control, customer call information stores, media stream formats conversion are arranged.In network, specifically comprise following functional entity: (Gateway Controller is that (Gateway, control section GW) are being born the effect that the call treatment of GW is controlled to gateway GC) to gateway controller.GW comes down to a network and leads to the functive of changing between the agreement of other networks as the part of call session control system, is bearing the responsibility of between different communication protocol, data format, computer language, changing.GW carries out between system in " translation ", is also bearing the function of data filter, system safety, calling flow control.
In addition; In the network that carries, controls to multimedia resource; (MediaResource Function Control is MRFC) through explaining the information from application server and service call conversation control function, control multimedia resource processor (Media Resource Function Processing for the multimedia resource controller; MRFP) media stream resources on, and functions such as the controlled Media Stream to the mixing Incoming of MRFP, Media Analysis conversion realize.Specific to calling out on the linkage function, MRFC is bearing the effect that the call treatment of MRFP is controlled as the control section of MRFP.
In addition; Interconnected boundary point controller (Inter-working Border Controlling Function; I-BCF) be functional entity on the network control platform of two operators; (Inter-working Border Gateway Function I-BGF) carries out the realization of functions such as internetwork protocol conversion, flow control to be used to control interconnected boundary point gateway.And specific to calling out on the linkage function, I-BCF is bearing the effect that the call treatment on the I-BGF is controlled as the I-BGF control section.
Along with making rapid progress of network technology, network user's number is also in swift and violent increase.In the regular hour; A large amount of situation about sharply increasing of calling out also occur again and again on the network junction; This just possibly cause the call request that is engraved in when a certain on above-mentioned network node GW, MRFP or the I-BGF to surpass that corresponding controllers GC, MRFC or I-BCF go up can the ability of processing scope, forms to call out and transships.Thing followed consequence is on GW, MRFP or I-BGF, to form Call Congestion, and then causes system responses slack-off, and simultaneously, user calling information possibly lost because buffer memory capacity is limited.Therefore, in conjunction with the control ability of key-course, must transship control to the call load of call session control system.
Below with the WMG in the next generation network (Media Gateway, MGW) and Media Gateway Controller (Media Gateway Controller is an example MGC), introduces prior art to calling out the control of overload.Defining in the H.248 agreement relevant with calling out overload has network to connect the correlation function that traffic congestion is handled and overload is controlled in the control, and with reference to figure 1, the concrete processing procedure of the MGW detection of call signal of prior art is following:
Step s101, the call load of the current carrying of statistics on MGW;
Step s102 goes up the overloading threshold of setting that is used to call out overload control according to MGW, judges whether the call load amount of current carrying surpasses threshold value; If be judged as among the s102 be, then change step s103, if be judged as not; Then return step s101, carry out the statistics of next call load;
Step s103, the call load ratio that will on MGW, generate that calculating should reduce, MGC reduces call load according to this ratio.
To sum up, though the existing call control system can realize calling out overload control, there is following defective:
At first, because prior art is the calling overload control of taking as the leading factor with MGC, call out the controlled function that overload control mainly depends on MGC; Therefore, when MGC does not support overload control, or when MGC can't operate as normal; Calling can not in time be handled, and makes the network junction Call Congestion occur, causes system's call accepted request amount sharply to increase; System handles speed is slack-off, influences the whole system operate as normal, even causes systemic breakdown;
Next, because the calling of overload part can not in time be handled because buffer memory capacity is limited, the entrained customer call information dropout of calling of feasible part overload has influenced service quality.
Equally,, also can not control effectively in time, the problems referred to above occur owing to calling out single the causing when calling out overload of overload control approach based on MRFC, MRFP or based on the call session control system of I-BCF, I-BGF.
Summary of the invention
Technical problem to be solved by this invention is; Provide a kind of detector, call session control system to reach device and method based on the detection of call signal of this system; This system comprise controller and be controlled by the controller, the detector of detection of call load; On the calling overload control basis of taking as the leading factor with controller, according to the secondary Rule of judgment, the calling overload self-protection on the start-up detector reduces current call load; This invention has increased the approach of calling out overload control, and operation is simple.
In order to solve the problems of the technologies described above, the present invention proposes a kind of detector, comprise like lower unit:
Memory cell is used to store the first threshold that is used for controlling call load and greater than second threshold value of first threshold;
Statistic unit, the call load that is used to add up current carrying;
Detect control unit; Be used for the first threshold and the current call load of second threshold value control of storing according to said memory cell; Reach first threshold if detect current bearing call load; Then trigger the calling overload control of the controller of this detector of control, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection of said detector.
Concrete, detect control unit and also include:
The first threshold judging unit is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit is used for after said first threshold judgment unit judges, judges whether call load reaches second threshold value;
Control unit; Be used for controlling according to the judged result of said first threshold judging unit, the second threshold decision unit; If the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold, then trigger the solicited message of calling overload control of the controller of said this detector of control; When the judged result of the second threshold decision unit indicates the call load of carrying to reach second threshold value, trigger the calling overload protection of said detector.
Accordingly, call session control system of the present invention comprises:
The controller that is used for the control detection device;
The detector that is used for the detection of call load,
Wherein, detector comprises:
Memory cell is used to store the first threshold that is used for controlling call load and greater than second threshold value of first threshold;
Statistic unit, the call load that is used to add up current carrying;
Detect control unit; Be used for first threshold and the current call load of second threshold value control according to said cell stores; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of controller, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection of said detector.
Concrete, above-mentioned detection control unit comprises:
The first threshold judging unit is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit is used for after said first threshold judgment unit judges, judges whether call load reaches second threshold value;
Control unit; Be used for controlling according to the judged result of said first threshold judging unit, the second threshold decision unit; If the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold, then carry out the solicited message of calling out overload control to the controller request of sending; When the call load of carrying in the indication of the judged result of the second threshold decision unit reaches second threshold value, trigger said detector overload protection.
Concrete, said detector can be GW, MRFP or I-BGF.
And controller can be GC, MRFC or I-BCF.
In next generation network, described detector can be MGW, and controller can be MGC.
Accordingly, the present invention also provides the method for detection of call signal in a kind of call session control system, and this method of detector of the detection of call load that said call session control system comprises controller, be controlled by the controller comprises the steps:
A, detector are added up the call load of current carrying;
Whether the call load that b, detector detect current carrying reaches the first threshold that is used for the controlling call load and greater than second threshold value of first threshold; Reach first threshold if detect current bearing call load; Then trigger the calling overload control of said controller; And when continuing to detect call load and reach second threshold value, trigger the calling overload protection of said detector.
Concrete, above-mentioned steps b can comprise again:
B1, detector judge whether the call load of current carrying reaches first threshold, if, then carry out b2, otherwise, the statistics that a proceeds call load returned;
B2, detector are carried out the solicited message of calling out overload control and are judged whether call load reaches second threshold value to the control unit request of sending; If, then triggering the calling overload protection of said detector, refusal is called out; Otherwise, return the statistics that a proceeds call load.
Above in the said call session control system,
Concrete, said detector can be GW, MRFP or I-BGF.
And controller can be GC, MRFC or I-BCF.
In next generation network, described detector can be MGW, and controller can be MGC.
Embodiment of the present invention has following beneficial effect:
At first; The present invention calls out on the basis of overload control at the controller of call session control system; Come the controlling call load through detector according to the first threshold that is used for the controlling call load with greater than second threshold value of first threshold; When detector detected current bearing call load and reaches first threshold, detector was carried out the solicited message of calling out overload control to the controller request of sending, and triggers it and calls out overload control; And when continuing to detect call load and reach second threshold value, detector triggers calls out overload protection.Therefore; When controller is not supported overload control, or when controller can't operate as normal, detector can in time start the overload protection of self; Efficiently solve in the prior art owing to call out and in time to handle, and make system handles speed slack-off even cause the problem of system's cisco unity malfunction;
Secondly; The present invention has alleviated the processing load on the controller to the dual overload control of call load; Avoided because the calling overload control mode that controller is set is unreasonable; And the overload that causes is controlled the function of not bringing into normal play, or causes the problem of customer call information dropout owing to buffer memory capacity is limited.
Description of drawings
Fig. 1 is the flow chart of existing WMG detection of call signal;
Fig. 2 is the structural representation of detector of the present invention;
Fig. 3 is the structural representation of the call session system based on GC and GW of the present invention;
Fig. 4 is the schematic flow sheet based on the method for detection of call signal in the call session control system of GC and GW of the present invention;
Fig. 5 is the structural representation of the call session control system based on MRFC and MRFP of the present invention;
Fig. 6 is the schematic flow sheet based on the method for detection of call signal in the call session control system of MRFP and MRFC of the present invention;
Fig. 7 is the structural representation of the call session control system based on I-BCF and I-BGF of the present invention;
Fig. 8 is based on the schematic flow sheet of the method for detection of call signal in the call session control system of I-BGF and I-BCF.
Embodiment
Core of the present invention is to call out on the basis of overload control at the controller of call session control system; Increased the calling overload protection function on the detector, adopted this detector that the call load of statistics is carried out twice threshold and judge, reached first threshold when detecting current bearing call load; Then carry out the solicited message of calling out overload control to the controller request of sending; Trigger it and call out overload control, and when detecting call load and reach second threshold value, trigger the calling overload protection; Efficiently solve in the prior art owing to call out and in time to handle, and make system handles speed slack-off even cause the problem of system's cisco unity malfunction.
With reference to Fig. 2, this figure is the structural representation of a kind of detector provided by the invention, mainly includes:
Memory cell 21; Be used to store the first threshold that is used for controlling call load and greater than second threshold value of first threshold; The described first threshold and second threshold value can be the preset values of Center Processing Unit Utilization; Also can be predefined calling numerical value, and the threshold value that is used for controlling call load can increase the multistage threshold decision of paired call load according to actual needs;
Statistic unit 22, the call load that is used to add up current carrying, corresponding to the character of the threshold value in the memory cell, the calling numerical value that the statistics call load can be added up the occupancy of central processing unit on the gateway or added up current carrying compares with corresponding threshold value;
Detect control unit 23; Be used for first threshold and the current call load of second threshold value control according to said memory cell 22 storages; Reach first threshold if detect current bearing call load; Then trigger to call out overload control, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection.
Concrete, detect control unit 23 and comprise:
First threshold judging unit 231 is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit 232 is used for after said first threshold judging unit 221 is judged, judging whether call load reaches second threshold value;
Select performance element 233, be used for judged result,, then trigger and call out overload control if the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold according to said first threshold judging unit, the second threshold decision unit; When the judged result of the second threshold decision unit indicates the call load of carrying to reach second threshold value, trigger and call out overload protection.
With reference to figure 3, this figure is the structural representation of the call session control system based on GC and GW provided by the invention.As shown in the figure, GC31 is as the controller of system, in the present invention; Be the part of calling out overload control leading role, except completion and call session controller (CSCF, Call Session ControlFunction) are conversed, the conversion of call control protocol; Also control the call state that GW32 goes up connecting path; When the call load on the GW32 overloads, GW32 is sent the control information of calling overload, control reduces GW32 and goes up the call load that will soon generate.
Call session control system of the present invention also comprises GW32; GW32 is as the detector of system; Being used for resource control, coding and decoding, and carrying out information interaction with GC31 and controlling call is connected, is first threshold and the current call load of second threshold value control that basis is stored in this device in major function of the present invention; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of GC31, and when continuing to detect call load and reach second threshold value, the calling overload protection of triggering GW32.
During concrete the realization, GW32 includes:
Detect control unit 323; Be used for first threshold and the current call load of second threshold value control according to said memory cell 321 storages; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of GC31, and when continuing to detect call load and reach second threshold value, the calling overload protection of triggering GW32 self.
Detecting control unit 323 can specifically include in the specific implementation:
The first threshold judging unit is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit is used for after said first threshold judgment unit judges, judges whether call load reaches second threshold value;
Control unit; Be used for controlling according to the judged result of said first threshold judging unit, the second threshold decision unit; If the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold; Then carry out the solicited message of calling out overload control, trigger it and call out overload control, reduce the call load that soon on GW32, generates to the GC31 request of sending; When the judged result of the second threshold decision unit indicates the call load of carrying to reach second threshold value, trigger the overload protection of GW32.
With reference to Fig. 4, this figure is based on the schematic flow sheet of the method for detection of call signal in the call session control system of GC and GW, specifically comprises:
Step s401, the call load of adding up current carrying by the statistic unit among the GW;
Step s402, at first GW judges whether call load that current GW carries reaches the first threshold of controlling call load, if, execution in step s403 then, otherwise, step s401 returned;
Step s403, GW carries out the solicited message of calling out overload control to the GC request of sending, and if continue to judge whether call load reaches is used for that controlling call is loaded and greater than second threshold value of first threshold, execution in step s404 then, otherwise, step s401 returned;
Step s404 triggers the calling overload protection that starts GW.
In addition; A kind of realization situation of the calling overload protection of above-mentioned GW is according to calling out overload messages; Calculate the call load ratio that will on GW, generate that should reduce by GW or GC, according to the call load ratio that should reduce, refusal joins request from the calling of this ratio of GC.Said calling overload messages comprise call load overload quantity, customer call information, routing iinformation.
Need explanation, GW carves call load at a time and following two kinds of overload condition can occur in the practical application, and handled is following:
1, the last call load of GW surpasses first threshold, and does not reach second threshold value, and earlier to GC send request carry out the solicited message of calling out overload control according to above-mentioned calling overload handling process this moment, triggers the calling overload control of GC;
2, the last call load of GW surpasses second threshold value, and carry out the solicited message of calling out overload control to the GC request of sending this moment earlier, triggers the calling overload control of GC, meanwhile, triggers the calling overload protection of GW.
When calling out overload control continuously, the content according to the present invention has again:
1) if GC is because the unreasonable overload of setting that causes of calling overload control mode is controlled the function of not bringing into normal play; Or GC does not support overload control; Or GC can't operate as normal, the phenomenon that at this moment reflects be call load on the GW of next statistics owing to can not timely and effective processing continuing to increase, reach second threshold value of GW Center Processing Unit Utilization the most at last; Thereby the secondary of s403 is judged in steps, triggers the calling overload protection function of GW self;
2) if the GC operate as normal, to control calling out overload timely and effectively, the phenomenon that at this moment reflects is that the call load on the GW of next statistics is effectively reduced, thereby can not reach second threshold value of GW Center Processing Unit Utilization within a certain period of time.
In addition, in next generation network,, form standalone feature entity such as MGW and MGC because the function of original " big gateway " is independently gone out; Therefore, it specifically is H.248 agreement of basis that said MGC calls out overload control, accepts to handle the calling overload messages from MGW by MGC; Then MGW is sent and reduce the feedback control information that MGW goes up the call load that is about to generation, reach overload control purpose, wherein; The ratio that reduces can be determined that notice MGC carried out after promptly MGW calculated ratio value, also can be determined by MGC by MGW; Be the calling overload messages that MGC reports according to MGW, calculate the ratio that reduces voluntarily, and carry out and call out overload control.Said MGW calls out in the overload protection refusal and calls out that to join request be the ADD signaling that is joined request from the calling of MGC by the MGW refusal.
Need to prove that the actual conditions that occur based on the call session control system of MRFC, MRFP and call session control system based on I-BCF, I-BGF are identical with said circumstances.Wherein, in the call session control system based on MRFC, MRFP, MRFC corresponds respectively to above-mentioned GC, GW as the control section of MRFP; In the call session control system based on I-BCF, I-BGF, I-BCF corresponds respectively to above-mentioned GC, GW as the control section of I-BGF.
With reference to figure 5, this figure is the structural representation of the call session control system based on MRFC and MRFP provided by the invention.As shown in the figure, MRFC51 is as the controller of system, in the present invention; It has been the part of calling out overload control leading role; Converse except accomplishing, also control media stream resources and call state on the MRFP52, when the call load on the MRFP52 overloads with CSCF; MRFP52 is sent the control information of calling overload, and control reduces MRFP52 and goes up the call load that will soon generate.
Call session control system of the present invention also comprises MRFP52; MRFP52 is as the detector of system; Being used to mix the Media Stream of Incoming, carrying, code conversion, the Media Analysis of control reference point, and carrying out information interaction with MRFC51 and controlling call is connected, is first threshold and the current call load of second threshold value control that basis is stored in this device in major function of the present invention; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of MRFC51, and when continuing to detect call load and reach second threshold value, the calling overload protection of triggering MRFP52.
Concrete, MRFP52 includes:
Detect control unit 523; Be used for first threshold and the current call load of second threshold value control according to said memory cell 521 storages; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of MRFC51, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection of self.
Detecting control unit 533 specifically can include when implementing:
The first threshold judging unit is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit is used for after said first threshold judgment unit judges, judges whether call load reaches second threshold value;
Control unit; Be used for controlling according to the judged result of said first threshold judging unit, the second threshold decision unit; If the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold; Then carry out the solicited message of calling out overload control, trigger it and call out overload control, the call load that minimizing will generate on MRFP52 to the MRFC51 request of sending; When the judged result of the second threshold decision unit indicates the call load of carrying to reach second threshold value, trigger the overload protection of MRFP52.
With reference to Fig. 6, this figure is the schematic flow sheet that the present invention is based on the method for detection of call signal in the call session control system of MRFP and MRFC, and this flow process mainly comprises:
Step s601, the call load of adding up current carrying by the statistic unit among the MRFP;
Whether the call load that step s602, MRFP at first judge current MRFP and carried reaches the first threshold of controlling call load, if, execution in step s603 then, otherwise, step s601 returned;
Step s603, MRFP carries out the solicited message of calling out overload control to the MRFC request of sending, and continues to judge whether call load reaches is used for that controlling call is loaded and greater than second threshold value of first threshold; If; Execution in step s604 then, otherwise, step s601 returned;
Step s604 triggers the calling overload protection that starts MRFP.
With reference to figure 7, this figure is the structural representation of the call session control system based on I-BCF and I-BGF provided by the invention.As shown in the figure; I-BCF71 in the present invention, has been the part of calling out overload control leading role as the controller of system; Be used to control the call state on the I-BGF72; When the call load on the I-BGF72 overloads, I-BGF72 is sent the control information of calling overload, control reduces I-BGF72 and goes up the call load that will soon generate.
Call session control system of the present invention also comprises I-BGF72; I-BGF72 is as the detector of system; Be used to out business and carry out mark, Internet Protocol (the Internet Protocol of packet package; IP) translation of address and port numbers, incoming traffic analysis of strategies, utilization rate detect, and carry out information interaction with I-BCF71 and controlling call is connected, are first threshold and the current call load of second threshold value control that basis is stored in this device in major function of the present invention; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of I-BCF71, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection of self.
Concrete, I-BGF72 includes:
Detect control unit 723; Be used for first threshold and the current call load of second threshold value control according to said memory cell 721 storages; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of I-BCF71, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection of self.
More concrete, detecting control unit 723 can include:
The first threshold judging unit is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit is used for after said first threshold judgment unit judges, judges whether call load reaches second threshold value;
Control unit; Be used for controlling according to the judged result of said first threshold judging unit, the second threshold decision unit; If the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold; Then carry out the solicited message of calling out overload control, trigger it and call out overload control, the call load that minimizing will generate on I-BGF72 to the I-BCF71 request of sending; When the judged result of the second threshold decision unit indicates the call load of carrying to reach second threshold value, trigger the overload protection of I-BGF72.
With reference to Fig. 8, this figure is that this flow process mainly comprises based on the schematic flow sheet of the method for detection of call signal in the call session control system of I-BGF and I-BCF:
Step s801, the call load of adding up current carrying by the statistic unit among the I-BGF;
Whether the call load that step s802, I-BGF at first judge current I-BGF and carried reaches the first threshold of controlling call load, if, then execution in step s803 and s804, otherwise, step s801 returned;
Step s803, I-BGF carries out the solicited message of calling out overload control to the I-BCF request of sending, and continues to judge whether call load reaches is used for that controlling call is loaded and greater than second threshold value of first threshold; If; Execution in step s804 then, otherwise, step s801 returned;
Step s804 triggers the calling overload protection that starts I-BGF.
Above disclosedly be merely preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1. a detector is characterized in that, comprising:
Memory cell is used to store the first threshold that is used for controlling call load and greater than second threshold value of first threshold;
Statistic unit, the call load that is used to add up current carrying;
Detect control unit; Be used for first threshold and the current call load of second threshold value control according to said cell stores; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of the controller of this detector of control, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection of said detector.
2. detector as claimed in claim 1 is characterized in that, detects control unit and comprises:
The first threshold judging unit is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit is used for after said first threshold judgment unit judges, judges whether call load reaches second threshold value;
Control unit; Be used for controlling according to the judged result of said first threshold judging unit, the second threshold decision unit; If the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold, then trigger the calling overload control of the controller of said this detector of control; When the judged result of the second threshold decision unit indicates the call load of carrying to reach second threshold value, trigger the calling overload protection of said detector.
3. call session control system comprises the detector of detection of call load, and, it is characterized in that said detector comprises to the controller that said detector is controlled:
Memory cell is used to store the first threshold that is used for controlling call load and greater than second threshold value of first threshold;
Statistic unit, the call load that is used to add up current carrying;
Detect control unit; Be used for first threshold and the current call load of second threshold value control according to said cell stores; Reach first threshold if detect the call load of current carrying; Then trigger the calling overload control of controller, and when continuing to detect call load and reach second threshold value, trigger the calling overload protection of said detector.
4. call session control system as claimed in claim 3 is characterized in that, said detection control unit comprises:
The first threshold judging unit is used to judge whether the call load of current carrying reaches first threshold;
The second threshold decision unit is used for after said first threshold judgment unit judges, judges whether call load reaches second threshold value;
Control unit; Be used for controlling according to the judged result of said first threshold judging unit, the second threshold decision unit; If the judged result of first threshold judging unit indicates the call load of current carrying to reach first threshold, then carry out the solicited message of calling out overload control to the controller request of sending; When the judged result of the second threshold decision unit indicates the call load of carrying to reach second threshold value, trigger the overload protection of said detector.
5. like claim 3 or 4 described call session control system, it is characterized in that said detector is gateway, multimedia resource processor or interconnected boundary point gateway.
6. like claim 3 or 4 described call session control system, it is characterized in that said controller is gateway controller, multimedia resource controller or interconnected boundary point controller.
7. the detector of the detection of call load that the method for detection of call signal in the call session control system, said call session control system comprise controller, be controlled by the controller, this method comprises:
A, detector are added up the call load of current carrying;
Whether the call load that b, detector detect current carrying reaches the first threshold that is used for the controlling call load and greater than second threshold value of first threshold; Reach first threshold if detect current bearing call load; Then trigger the calling overload control of said controller; And when continuing to detect call load and reach second threshold value, trigger the calling overload protection of said detector.
8. the method for detection of call signal in the call session control system as claimed in claim 7 is characterized in that step b specifically comprises:
B1, detector judge whether the call load of current carrying reaches first threshold, if, then carry out b2, otherwise, a returned;
B2, detector carry out the solicited message of calling out overload control and judge whether call load reaches second threshold value to the controller request of sending, if, then trigger the calling overload protection of said detector, otherwise, a returned.
9. like the method for detection of call signal in claim 7 or the 8 described call session control system, it is characterized in that said detector is gateway, multimedia resource processor or interconnected boundary point gateway.
10. like the method for detection of call signal in claim 7 or the 8 described call session control system, it is characterized in that said controller is gateway controller, multimedia resource controller or interconnected boundary point controller.
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| CN101959235B (en) * | 2009-07-17 | 2013-01-16 | 中兴通讯股份有限公司 | Channel request control method and base station |
| CN101834851B (en) * | 2010-03-30 | 2014-09-10 | 中兴通讯股份有限公司 | Multimedia message center and regulating method of processing capacity thereof |
| EP2747364A1 (en) * | 2012-12-20 | 2014-06-25 | British Telecommunications public limited company | Overload control for session setups |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218346A (en) * | 1997-09-25 | 1999-06-02 | 索尼株式会社 | Communication method, and data communications terminal, with data communication protocol for Inter-layer flow control |
| CN1318270A (en) * | 1998-07-16 | 2001-10-17 | 西门子公司 | Method and circuit for creating data signal links |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218346A (en) * | 1997-09-25 | 1999-06-02 | 索尼株式会社 | Communication method, and data communications terminal, with data communication protocol for Inter-layer flow control |
| CN1318270A (en) * | 1998-07-16 | 2001-10-17 | 西门子公司 | Method and circuit for creating data signal links |
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