CN102547784A

CN102547784A - Method and device for associating call detail records (CDRs), and method and device for generating CDRs

Info

Publication number: CN102547784A
Application number: CN201010612376XA
Authority: CN
Inventors: 刘红梅
Original assignee: China Mobile Group Shandong Co Ltd
Current assignee: China Mobile Group Shandong Co Ltd
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2012-07-04
Anticipated expiration: 2030-12-29
Also published as: CN102547784B

Abstract

The invention discloses a method and a device for associating call detail records (CDRs). According to the technical scheme, the method for associating the CDRs comprises the following steps of: acquiring a handover required (HR) message which is transmitted to a first base station controller (BSC) by a mobile switching center (MSC) and an HR confirmation message which is transmitted to the MSC by the first BSC, generating a first handover key value according to the HR message and the HR confirmation message, and associating the generated first key value pair by using the first handover key value; acquiring a handover command which is transmitted to a second BSC by the MSC; generating a second handover key value according to the HR message and information which is carried in the handover command and is the same as the HR confirmation message, and associating the generated second key value pair by using the second handover key value; and establishing an incidence relation of the CDRs corresponding to the first key value pair and the second key value pair according to the first key value pair associated with the first handover key value and the second key value pair associated with the second handover key value. Due to the adoption of the technical scheme, the CDRs generated before and after handover can be associated.

Description

A kind of correlating method of call detail record, generation method and device

Technical field

The present invention relates to communication technical field, relate in particular to a kind of correlating method, generation method and device of call detail record.

Background technology

The A interface is GSM (Global System for Mobile Communications; Global system for mobile communications) NSS (Network Switch Subsystem in; The network exchange subsystem) with BSS (Base StationSubsystem, base station sub-system) between standard interface, be MSC (MobileSwitching Center on physical entity; Mobile switching centre) and BSC (Base Station Controller; Base station controller) interface between, the A interface adopts BSSAP (Base Station System Application Part, Base Station Subsystem Application Part) agreement.

The A interface can use connectionless service class and the connection-oriented service quasi-protocol of SCCP (Signalling Connection Control Part, SCCP) to realize function.Utilize the connection-oriented service quasi-protocol can accomplish functions such as connecting foundation, maintenance and dismounting; Utilize the connectionless service quasi-protocol can accomplish functions such as Circuit management, reset operation, flow control.Wherein A interface call signaling procedure is set up by connecting, data transmit be connected the release three phases forms.Foundation towards connecting signaling link mainly comprises: caller SCCP user sends a CR (Connect Request; Connection request) message; (with respect to CR message, the local reference of this caller switch M is source local reference, source local parameter to comprise the local reference number of caller switch M in this CR message; Be abbreviated as SLR), protocol type, information such as the address of the address of called switch N, switch M and user data; When called switch N receives CR message; CC (Connection Confirm of switch N loopback; The connection affirmation) message is given switch M; (with respect to CC message, the local reference of this switch N is the local reference number of source local reference, switch M, and (with respect to CC message, the local reference of this switch M is destination local reference to comprise the local reference of switch N in this CC message; The purpose local parameter; Be abbreviated as DLR), information such as the protocol type selected and user data, CREF of loopback (Connection Refused connects refusal) message is given switch M if switch N can not set up that SCCP connects.

After switch M receives CC message, set up with switch N between the SCCP logic be connected.In ensuing information exchange, switch M uses the DLR in the CC message, and switch N uses the SLR in the CR message to carry out information exchange.When connecting release, switch M exchanges Connection Released (being connected release) message and Release Complete (discharge and accomplish) message each other with switch N, finishes the release of whole connection.

Use SCCP message to accomplish in the process of whole calling signaling flow process at the A interface; Signaling monitoring system obtains the signaling message on the A interface; Signaling in the calling procedure is carried out event correlation; Final synthetic CDR (Call Detail Record, call detail record), CDR need rely in the whole process can this business procedure of unique identification a key assignments.At present, to be MSC with BSC be connected at SCCP the key assignments that in actual process, adopts of the protocol handler of signaling monitoring system sets up 14 corresponding potential source signaling point codes of SLR that the process initial stage uses and DLR, caller switch and 14 Destination Point Codes of called switch use.Particularly, the process of signaling monitoring system associated call signaling, as shown in Figure 1, mainly comprise the steps:

Step 101, signaling monitoring system obtain the CR message on the A interface.

Step 102, obtain 24 the SLR that comprises in this CR message, and generate one 64 key value Key A according to corresponding 14 OPC Origination Point Code of the SLR that obtains and this CR message and 14 Destination Point Code.

Step 103, allocation space is used to store this time call detail record in Installed System Memory, and corresponding relation is set up in the memory headroom address of distributing and the KeyA of generation.

In the practical application; The stored calls detail record is stored through the call event structure of definition usually in the memory headroom that distributes; Here; Through corresponding relation is set up in the memory headroom address of distributing and the KeyA of generation, the KeyA that is about to call event structure and generation sets up corresponding relation, just utilizes KeyA associated call detail record.

Step 104, signaling monitoring system obtain the CC message on the A interface.

Step 105, obtain 24 SLR and DLR comprising in this CC message.

Step 106, the SLR that basis is obtained, 14 OPC Origination Point Code and 14 Destination Point Code generate 64 key value Key B; And according to the DLR that obtains, 14 OPC Origination Point Code and 14 Destination Point Code generation KeyA '.

Step 107, find the memory headroom address of call detail record, and the KeyB of memory headroom address that finds and generation is also set up corresponding relation through the KeyA ' that generates.

In this step 107, the KeyA ' that generates according to the DLR in the CC message is identical with the KeyA that generates according to the SLR in the CR message, both can find the memory headroom address of call detail record according to this relation.

So far, the flow process of signaling monitoring system associated call signaling finishes.According to above-mentioned flow process, call detail record is set up incidence relation respectively with according to the KeyA of CR message generation and the KeyB that generates according to CC message, promptly through related this call detail record of key-value pair according to CR message and the generation of CC message.

Can produce KeyA or KeyB key assignments according to the algorithm of above generation key assignments in A interface DT1 message, RLSD (ReLeaSeD Release complete) message and RLC (Radio Link control) message of obtaining again; And be associated with corresponding call detail record according to key assignments; When protocol handler receives the last item RLC message; Think that whole calling procedure finishes; The call detail record content of correspondence is sent to upper system, and remove the corresponding relation of key assignments and internal memory, releasing memory space.

Above-mentioned calling procedure incident composition algorithm about A interface Base Station Subsystem Application Part is that the signaling message that obtains signaling link is realized; There is a very crucial shortcoming in it; Even the user is making a call and is connecting the switching that the cross-location district takes place in the back; When handoff procedure successfully finishes; The signaling message SCCP layer that is cut into the reposition district can be taked new SLR and DLR, and 14 bit signaling points codings also may change, and the key assignments that signaling message generated that is cut into key assignments that the signaling message in reposition district generates and the original position district at the beginning of the call setup like this is different fully; The call detail record set up of district is closed along with receiving connection release message in situ, and user's signaling message of switching to other reposition districts generations just can't be associated with initial calling structure like this.Therefore; The user cuts out the back the lane place of initiating from conversation just can't obtain this user-dependent follow-up signaling message; If this user's on-hook finishes conversation in the reposition district of incision; The cause value (this release message is mutual between the network element that is cut into the reposition district) that former call detail record just can't accurately provide the omnidistance duration of call of user (duration of call before cutting out+be cut into the duration of call in reposition district), on-hook to discharge; Because user number information generally is included in the initial call detail record; If the user sends the switching in cross-location district in calling procedure like this, can cause in calling procedure sending the call detail record before and after signaling monitoring system can't relatedly switch under the situation about switching the lane place, thereby make deviation is appearred in call record results such as call failure factor, the duration of call.

Summary of the invention

In view of this, the embodiment of the invention provides a kind of correlating method, generation method and device of call detail record, in calling procedure, sends under the situation about switching the lane place, adopts this technical scheme can realize the association to the call detail record before and after switching.

The embodiment of the invention realizes through following technical scheme:

According to an aspect of the embodiment of the invention, a kind of correlating method of call detail record is provided, comprising:

Obtain moving exchanging center MSC and send to the handoff request message of first base station controller BSC and the handoff request acknowledgement message that a said BSC sends to said MSC; A said BSC is the BSC of the Target cell ownership of travelling carriage switching;

The information that information of carrying according to said handoff request message and said handoff request acknowledgement message carry generates first and switches key assignments; And utilize said first to switch related first key-value pair that generates of key assignments; Wherein, said first key-value pair is set up the message generation that SCCP SCCP is connected according to a said MSC and a said BSC;

Obtain said MSC sends to the 2nd BSC behind the handoff request acknowledgement message that receives said BSC transmission switching command message; Said the 2nd BSC is the BSC of sub-district, the current place of travelling carriage ownership;

Carry in information of carrying according to said handoff request message and the said switching command message with said handoff request acknowledgement message in identical information generate second and switch key assignments; And utilize said second to switch related second key-value pair that generates of key assignments; Message when wherein, said second key-value pair is set up SCCP and is connected according to said MSC and said the 2nd BSC generates;

Switch related said first key-value pair of key assignments and said second according to said first and switch related said second key-value pair of key assignments, set up the incidence relation of said first key-value pair and the pairing call detail record of said second key-value pair.

According to an aspect of the embodiment of the invention, also provide a kind of correlating method based on above-mentioned call detail record to generate the method for call detail record, comprising:

Message is broken off in the connection that receiving mobile sends under a said BSC;

According to the incidence relation of said first key-value pair and the pairing call detail record of said second key-value pair, obtain the related call detail record of said first key-value pair;

The call detail record that the said call detail record that obtains and travelling carriage are produced under a said BSC merges, and generates the corresponding call detail record of said travelling carriage.

According to another aspect of the embodiment of the invention, a kind of associated apparatus of call detail record also is provided, comprising:

The first message acquiring unit is used to obtain moving exchanging center MSC and sends to the handoff request message of first base station controller BSC and the handoff request acknowledgement message that a said BSC sends to said MSC; A said BSC is the BSC of the Target cell ownership of travelling carriage switching;

First switches the key assignments generation unit, and the information that information that is used for carrying according to the handoff request message that the said first message acquiring unit obtains and said handoff request acknowledgement message carry generates first and switches key assignments;

First incidence relation is set up the unit; Be used to utilize said first to switch related first key-value pair that generates of the first switching key assignments that the key assignments generation unit generates; Wherein, said first key-value pair is set up the message generation that SCCP SCCP is connected according to a said MSC and a said BSC;

The second message acquiring unit is used to obtain said MSC sends to the 2nd BSC behind the handoff request acknowledgement message that receives said BSC transmission switching command message; Said the 2nd BSC is the BSC of sub-district, the current place of travelling carriage ownership;

Second switches the key assignments generation unit, the switching command message that information that is used for carrying according to the handoff request message that the said first message acquiring unit obtains and the said second message acquiring unit obtain carry with said handoff request acknowledgement message in identical information generate second and switch key assignments;

Second incidence relation is set up the unit; Be used to utilize said second to switch related second key-value pair that generates of the second switching key assignments that the key assignments generation unit generates; Message when wherein, said second key-value pair is set up SCCP and is connected according to said MSC and said the 2nd BSC generates;

The 3rd incidence relation is set up the unit; Be used for setting up related said first key-value pair and said second incidence relation of setting up the unit of the first switching key assignments and set up related said second key-value pair of setting up the unit of the second switching key assignments, set up the incidence relation of said first key-value pair and the pairing call detail record of said second key-value pair according to said first incidence relation.

An aspect according to the embodiment of the invention also provides a kind of device that generates call detail record, comprises each unit and call detail record generation unit that the associated apparatus of above-mentioned call detail record comprises;

Said call detail record generation unit; Be used for the connection disconnection message that receiving mobile sends under a said BSC; Incidence relation according to said first key-value pair and the pairing call detail record of said second key-value pair; Obtain the related call detail record of said first key-value pair, and said call detail record that will obtain and the call detail record merging that travelling carriage produces under a said BSC, generate the call detail record of said travelling carriage correspondence.

Above-mentioned at least one technical scheme that provides through the embodiment of the invention; In calling procedure, send under the situation about switching the lane place; Handoff request message and the handoff request acknowledgement message that a BSC sends to MSC of a BSC that at first sends to the Target cell ownership of switching according to MSC generates first and switches key assignments, and utilizes this first to switch first key-value pair that the related basis of key assignments and a BSC set up the message generation that SCCP is connected; And; Send to the switching command message generation second switching key assignments of the handoff request message of a BSC and the 2nd BSC that MSC sends to sub-district, current place ownership according to MSC; And utilize this second second key-value pair of message generation when switching the related basis of key assignments and the 2nd BSC and setting up SCCP and is connected; And then, set up the incidence relation of first key-value pair and the pairing call detail record of second key-value pair according to the first switching key assignments related first key-value pair and the second related key-value pair of the second switching key assignments.According to this technical scheme; Because it is identical to generate the information of the first switching key assignments and the second switching key assignments; Therefore; Can switch key assignments through these two and realize the related of first key-value pair and the pairing call detail record of second key-value pair, thereby realize association the call detail record that switches front and back.

Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.

Description of drawings

Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with the embodiment of the invention, is not construed as limiting the invention.In the accompanying drawings:

The flow chart of the signaling monitoring system associated call signaling that Fig. 1 provides for prior art;

The correlating method flow chart of the call detail record that Fig. 2 provides for the embodiment of the invention one;

The flow chart of generation first key-value pair that Fig. 3 provides for the embodiment of the invention one;

The flow chart of in the signaling handoff procedure, realizing the call detail record association that Fig. 4 provides for the embodiment of the invention one;

The associated apparatus sketch map one of the call detail record that Fig. 5 provides for the embodiment of the invention two;

The associated apparatus sketch map two of the call detail record that Fig. 6 provides for the embodiment of the invention two;

The associated apparatus sketch map three of the call detail record that Fig. 7 provides for the embodiment of the invention two;

The device sketch map of the generation call detail record that Fig. 8 provides for the embodiment of the invention two.

Embodiment

Send the implementation of realizing under the situation about switching the lane place the association of the call detail record before and after switching in the calling procedure in order to be given in; The embodiment of the invention provides a kind of correlating method, generation method and device of call detail record; Below in conjunction with Figure of description the preferred embodiments of the present invention are described; Should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.And under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.

Embodiment one

The embodiment of the invention one provides a kind of correlating method of call detail record, and is as shown in Figure 2, and this method mainly comprises the steps:

Step 201, obtain MSC and send to the handoff request message of a BSC and the handoff request acknowledgement message that a BSC sends to MSC.

In this step 201, a BSC is the BSC of the Target cell ownership of travelling carriage switching.

The information that step 202, the information of carrying according to this handoff request message and handoff request acknowledgement message carry generates first and switches key assignments.

Step 203, utilize first to switch the message generation that SCCP is connected is set up in the key assignments association according to MSC and a BSC first key-value pair.

Step 204, obtain this MSC sends to the 2nd BSC after receiving the handoff request acknowledgement message that a BSC sends switching command message.

In this step 204, the 2nd BSC is the BSC of sub-district, the current place of travelling carriage ownership.

Carry in step 205, the information of carrying according to the handoff request message obtained and the switching command message obtained with the handoff request acknowledgement message in identical information generate second and switch key assignments.

Step 206, utilize to generate second switch second key-value pair of the message generation of key assignments association when setting up SCCP and be connected according to MSC and the 2nd BSC.

Step 207, switch the first related key-value pair of key assignments and second according to first and switch the second related key-value pair of key assignments, set up the incidence relation of this first key-value pair and the pairing call detail record of second key-value pair.

So far, realize under the situation that switch the transmission lane place in calling procedure the flow process of the call detail record association before and after switching is finished.

In the preferred implementation that the embodiment of the invention one provides, in the step 202 that the said flow process of Fig. 2 comprises, the information that information of carrying according to handoff request message and handoff request acknowledgement message carry generates first and switches key assignments, specifically can be through following mode:

According to the identification information of the Target cell that carries in the handoff request message, and at least one information in value information and the handoff parameter is described, the generation first switching key assignments in the sub-district that this handoff request acknowledgement message carries.

Wherein, the identification information of the Target cell that carries in the handoff request message comprises:

The Location Area Code LAC that Target cell is corresponding is or/and the cell ID CI of this Target cell.

According to the preferred implementation of the above generation first switching key assignments, specific as follows:

Value information is described in Location Area Code LAC and sub-district according to Target cell is corresponding, generates first and switches key assignments; Or

Location Area Code LAC and the handoff parameter corresponding according to Target cell generate first and switch key assignments; Or

Value information and handoff parameter are described in Location Area Code LAC, sub-district according to Target cell is corresponding, generate first and switch key assignments; Or

Value information is described in cell ID CI and sub-district according to Target cell, generates first and switches key assignments; Or

According to the cell ID CI and the handoff parameter of Target cell, generate first and switch key assignments; Or

Value information and handoff parameter are described in cell ID CI, sub-district according to Target cell, generate first and switch key assignments; Or

Value information and handoff parameter are described in Location Area Code LAC, the cell ID CI of Target cell, sub-district according to Target cell is corresponding, generate first and switch key assignments.

Particularly, when generating the first switching key assignments, can directly be the combination of above information; For example, for above-mentioned last a kind of mode that generates the first switching key assignments, can be according to the order from a high position to the low level; Fill the LAC value for first 16, fill the CI value for second 16, fill sub-district descriptor RF channel number value for the 3rd 16; The 4th 16 most-significant byte is filled handoff parameter Handoverreference value, and least-significant byte fills out 0, finally generates 64 switching key assignments.In the practical application, can be provided with flexibly above-mentioned be used to generate first switch key assignments the putting in order of each information, and switch under the situation of 64 of each information less thaies of key assignments being used to generate first, can obtain 64 switching key assignments through mending 0.Concrete condition is set according to system's scene of reality flexibly, and the figure place of this first switching key assignments also can be set according to requirement in practical systems.

In the preferred implementation that the embodiment of the invention one provides; In the step 205 that the said flow process of Fig. 2 comprises; Carry in information of carrying according to handoff request message and the switching command message with the handoff request acknowledgement message in identical information generate second switch key assignments process; Consistent with the detailed process that generates the first switching key assignments in the above-mentioned steps 202; Promptly according to the identification information of the Target cell that carries in the handoff request message, and carry in the switching command message with the handoff request acknowledgement message in be used to generate first switch key assignments the identical information of information, generate second and switch key assignments.Wherein, the identification information of Target cell comprises: the LAC that Target cell is corresponding, or/and the cell ID CI of this Target cell.In handoff procedure, generating the first employed information when switching key assignments and second and switching key assignments should be identical.

The technique scheme that provides according to the embodiment of the invention one; Because the sub-district descriptor and the handoff parameter that comprise in the sub-district descriptor that comprises in the switching command message, handoff parameter and the handoff request acknowledgement message are identical in a same handoff procedure, the information of adding lane place and the cell ID of Target cell has just guaranteed switching key assignments in handoff procedure uniqueness at the whole network.So the first switching key assignments that generates is equal with the second switching key assignments, through these two switching key assignments, just can realize the association to the call detail record that switches front and back.

In the preferred implementation that the embodiment of the invention one provides, as shown in Figure 3 in the step 203 that the said flow process of Fig. 2 comprises according to setting up the mode that message that SCCP SCCP is connected generates first key-value pair with a BSC, mainly comprise the steps:

Step 301, obtain MSC and after receiving the handoff request message that the 2nd BSC sends, send to the CR message of a BSC and the CC message that a BSC sends to MSC.

Step 302, the key assignments that will generate according to the SLR in the CR message and the key assignments that generates according to the SLR in the CC message are as this first key-value pair.

In the above-mentioned steps 302, the process that generates key assignments according to the SLR in the CR message is consistent with the detailed process of above-mentioned steps 102, and the process that generates key assignments according to the CLR in the CC message is consistent with the detailed process of above-mentioned steps 106, repeats no more here.In the practical application; Need generate a key assignments according to the DLR in the CC message; The key assignments of key assignments needs that this generates according to the SLR in the CC message through generating according to the DLR in this CC message, with the key assignments that SLR in the CR message generates set up related, promptly as first key-value pair.

In the above-mentioned steps 206, the generative process and the prior art of second key-value pair are basic identical, are not described in detail here.There are incidence relation in this second key-value pair and call detail record.

In the preferred implementation that the embodiment of the invention one provides; Can also further carry out record to switching times through call detail record; After promptly setting up the incidence relation of first key-value pair and the pairing call detail record of second key-value pair, also further carry out following steps through above-mentioned steps 207:

Switch sign for call detail record is provided with, and be used to write down the field value of switching times in the updating call detail record.

In order to understand the related method of above-mentioned realization switching front and back call detail record that the embodiment of the invention one provides better, be described in detail below in conjunction with the preferred embodiment of the concrete signaling process of calling out switching to technique scheme of the present invention.

This call detail record association mainly realizes in signaling monitoring system; Particularly; Signaling monitoring system carries out in the incident building-up process A interface call incident; If confirming to exist cross-location switches; Then be utilized in once cut out with cut process in sub-district descriptor (being generally 16) identical with handoff parameter (being generally 8), and lane place (being generally 16), cell ID (being generally 16) be in the unique characteristics of the whole network, use location district, cell ID, sub-district descriptor and handoff parameter generate both 64 related switching key assignments respectively; The new call detail record correspondence association between the key assignments newly after using the corresponding former key assignments of call detail record before switching key assignments completion switching and switching realizes user's repeatedly association of cross-location district handover event in calling procedure.

As shown in Figure 4, in the signaling handoff procedure, realize the process that call detail record is related, mainly comprise the steps:

Wherein, BSC_A is for switching the BSC of preceding sub-district ownership, and BSC_B is the BSC of the Target cell ownership of switching.

Handling process before switching

Step 401, set up the incidence relation of the key value Key A that call detail record and the CR message that sends to BSC_A according to MSC generates.

The concrete implementation procedure of this step 401 is: in A interface call event procedure; Signaling monitoring system obtains the SLR that comprises in the CR message of SCCP; Adopt the mode of OPC (OPC Origination Point Code)+DPC (Destination Point Code)+SLR to generate 64 key value Key A, and set up the incidence relation of this key value Key A of call detail record and generation.

Step 402, set up the incidence relation of call detail record and the key value Key B that generates according to CC message.

The concrete implementation of this step 402 is: signaling monitoring system obtains SLR and the DLR in the CC message of SCCP; And the mode that adopts OPC+DPC+DLR generates 64 key value Key A ' and adopt the mode of OPC+DPC+SLR to generate 64 key value Key B, and key value Key B is through the incidence relation of key value Key A ' foundation with call detail record.

The information that step 403, basis are extracted from follow-up signaling is filled call detail record.

The concrete implementation of this step 403 is: generate key value Key A or key value Key B according to OPC+DPC+SLR in the follow-up signaling, extract OPC Origination Point Code, Destination Point Code, lane place, sub-district, rear subscriber number, called number in the signaling then, rise and exhale information such as time, turn-on time to be filled in the call detail record related with key value Key A and key value Key B.The detailed process flow process of this part is consistent with the process that the existing A interface call of signaling monitoring system incident is synthesized, and is not described in detail here.

Step 404, before switch in the cross-location district, the CR message that sends to BSC_B according to MSC generates key value Key C.

The concrete implementation of this step 404 is: before the switching of cross-location district takes place; BSC_A is through the analysis to the moving table measuring report; If when finding that the Target cell of travelling carriage switching does not belong to this BSC_A; It will send a HR (Handover Required, handoff request) message to MSC, and this HR message has comprised cell ID (Cell ID) and the reason of switching of BSC_B, Target cell and the former sub-district of Target cell ownership.After MSC receives this HR message, can send CR message and the HR message of a SCCP to target BS C_B.Signaling monitoring system obtains the SLR in the CR message that MSC sends to BSC_B, adopts the mode of OPC+DPC+SLR to generate 64 key value Key C.

Step 405, the CC message that sends to MSC according to BSC_B are given birth to the corresponding KeyD with one-tenth key value Key C.

The concrete implementation of this step 405 is: after BSC_B receives the CR message that MSC sends, and CC message from a SCCP to MSC that can send, the SCCP of expression MSC and BSC_B is connected and has set up.Signaling monitoring system obtains the DLR in the CC message of target BS C_B, adopts the mode of OPC+DPC+DLR to generate 64 key value Key C ', and obtains the SLR in the CC message, adopts the mode of OPC+DPC+SLR to generate 64 key value Key D.The key value Key D that generates is related with the key value Key C foundation of generation in the step 404 through key value Key C ', and a pair of key assignments relation that is cut into the signaling message in reposition district is like this set up.

Key assignments is switched in step 406, generation first, and through this related KeyC of first switching key assignments and KeyD.

The concrete implementation of this step 406 is: BSC_B sends a handoff request acknowledgement message (Handover Request ACK) to MSC, has comprised sub-district descriptor and handoff parameter information in this message.Signaling monitoring system can send to from MSC: the LAC (16) and the CI (16) that extract BSC_B in the field the handoff request message of BSC_B " CellIdentifier (Target)-LAC (0 * 5311)/CI (11617) "; Extract sub-district descriptor RF channelNumber (16) in the sub-district description field from the handoff request acknowledgement message " BCCH ARFCN (RFchannel number): 539 "; From handoff parameter field " Handover reference value:97 ", extract Handover referece (8); According to the above-mentioned information of extracting, generate 64 first and switch key assignments HandoverKEY1.Particularly, the HandoverKEY1 of generation comprises: 64 key assignments from a high position to the low level, fill the LAC values for first 16; Fill the CI value for second 16; Fill RF channel number value for the 3rd 16, the 4th 16 most-significant byte is filled Handover reference value, and least-significant byte fills out 0.Key-value pair KeyC and KeyD through this HandoverKEY1 and generation set up related.

Key assignments is switched in step 407, generation second, and through this related KeyA of second switching key assignments and KeyB.

The concrete implementation of this step 407 is: MSC will send switching command message (Handover Command) to BSC_A after receiving the handoff request acknowledgement message of BSC_B transmission, and this message also comprises sub-district descriptor and handoff parameter information.Monitoring signaling sends to LAC (16) and the CI (16) that extracts BSC_B in the field " Cell 1-LAC (0 * 5311)/CI (11617) " the handoff request message of BSC_B from MSC; Extract RF channelNumber (16) in the sub-district description field from switching command message " BCCH ARFCN (RF channelnumber): 539 "; From handoff parameter field " Handoverreference value:97 ", extract Handover referece (8), generate 64 second and switch key assignments HandoverKEY2.This HandoverKEY2 of 64 comprises from a high position to the low level: fill the LAC value for first 16; Fill the CI value for second 16; Fill RF channel number value for the 3rd 16, the 4th 16 most-significant byte is filled Handover reference value, and least-significant byte fills out 0.

Step 408, set up the incidence relation of key-value pair KeyC+ key value Key D and the pairing call detail record of key-value pair KeyA+KeyB.

Because the sub-district descriptor in the switching command message, handoff parameter information are identical with sub-district descriptor and handoff parameter message in the handoff request acknowledgement message in a handoff procedure, the information of adding lane place and sub-district has just guaranteed that two switching key assignments that generate in handoff procedure are identical and unique at the whole network.Therefore because HandoverKEY1 and HandoverKEY2 are equal and unique in same process fully; Switch key assignments through these two; Just accomplished the related of key-value pair KeyC+ key value Key D and the pairing call detail record of key-value pair KeyA+KeyB, the signaling message after promptly switching can be associated with former call detail record through switching key assignments.

The technique scheme that provides according to the embodiment of the invention one; After the handoff procedure completion; Former BSC_A can send connection release message and discharge complete message release resource; For the event structure body switching mark is set, and the update event structure is used to write down the field of switching times, promptly increases once automatically switching frequency field.BSC_A is receiving under the situation that discharges complete message not according to original flow process shutdown call detail record, and still it is kept in the internal memory, uses key value Key C and KeyD to replace original key value Key A and KeyB to should call detail record.

The embodiment of the invention one also provides a kind of correlating method based on call detail record to generate the method for call detail record, and this method mainly comprises:

Receiving mobile sends Disconntect (connect and break off) message after the end call under BSC_B; According to the incidence relation of key-value pair (KeyC+KeyD) with call detail record; Obtain the related call detail record of this key-value pair; And the call detail record that the call detail record that obtains and travelling carriage produce under a BSC merged, generate the corresponding call detail record of travelling carriage.

Be that system obtains this Disconnect message; Connect message Time Calculation according to obtaining before switching goes out user's the duration of call; Be backfilling into the duration of call field of call detail record; And release cause value in the extraction release message, be backfilling into the cause value field in the call detail record, identify the release cause of whole calling procedure.The idiographic flow of this generation call detail record is an existing procedure, is not described in detail here.

Call detail record is receiving to judge it is not because switch this message that produces again after discharging complete message, then thinks this calling procedure fair termination, closes this call detail record, and is submitted to the Service Database warehouse-in.

The above embodiment of the present invention is obtained signaling through signaling monitoring system; The call event of synthetic A interface; Under the prerequisite that has kept owing to the technological merit that does not receive the different restriction of producer's equipment; To the situation that exists the cross-location district to switch in the call event; The association of signaling message before and after can using the method for switching key assignments to accomplish to switch obtains in the communication process repeatedly the cross-location district and switches the back actual duration of call and release cause and obtain switching times real in whole communication process, for the handoff failure reason of analyzing the cross-location district and the switching times of call process reality provide foundation.The present invention adopts the information of extracting in the signaling to generate the switching key assignments and realizes correlating method, because signaling message is a common interface, and the technical limitations that produces so can not receive producer's equipment difference.Can analyze in cross-location district handoff procedure influence through these data, data more accurately are provided the network optimization of mobile communications network to speech quality.

Embodiment two

The embodiment of the invention two provides a kind of associated apparatus of call detail record, and is as shown in Figure 5, and this device comprises:

The first message acquiring unit 501, first switches key assignments generation unit 502, first incidence relation sets up that unit 503, the second message acquiring unit 504, second switch key assignments generation unit 505, second incidence relation sets up unit 506 and the 3rd incidence relation is set up unit 507;

Wherein:

The first message acquiring unit 501 is used to obtain MSC and sends to the handoff request message of a BSC and the handoff request acknowledgement message that a BSC sends to MSC; The one BSC is the BSC of the Target cell ownership of travelling carriage switching;

First switches key assignments generation unit 502, and the information that information that is used for carrying according to the handoff request message that the first message acquiring unit 501 obtains and handoff request acknowledgement message carry generates first and switches key assignments;

First incidence relation is set up unit 503; Be used to utilize first to switch related first key-value pair that generates of the first switching key assignments that key assignments generation unit 502 generates; Wherein, this first key-value pair is set up the message generation that SCCP SCCP is connected according to a MSC and a BSC;

The second message acquiring unit 504 is used to obtain MSC sends to the 2nd BSC behind the handoff request acknowledgement message that receives BSC transmission switching command message; The 2nd BSC is the BSC of sub-district, the current place of travelling carriage ownership;

Second switches key assignments generation unit 505, the switching command message that the information that is used for carrying according to the handoff request message that the first message acquiring unit 501 obtains and the second message acquiring unit 504 obtain carry with this handoff request acknowledgement message in identical information generate second and switch key assignments;

Second incidence relation is set up unit 506, be used to utilize second switch that key assignments generation unit 505 generates second switch related second key-value pair that generates of key assignments, wherein, the message generation when this second key-value pair is set up SCCP and is connected according to this MSC and the 2nd BSC;

The 3rd incidence relation is set up unit 507; Be used for setting up related first key-value pair and second incidence relation of setting up unit 503 of the first switching key assignments and set up this related second key-value pair of the second switching key assignments of setting up unit 506, set up the incidence relation of this first key-value pair and the pairing call detail record of this second key-value pair according to first incidence relation.

In the preferred implementation that the embodiment of the invention two provides, the first switching key assignments generation unit 502 that device shown in Figure 5 comprises specifically is used for:

According to the identification information of this Target cell that carries in this handoff request message, and at least one information in value information and the handoff parameter is described, the generation first switching key assignments in the sub-district that this handoff request acknowledgement message carries.

In the preferred implementation that the embodiment of the invention two provides, the second switching key assignments generation unit 505 that device shown in Figure 5 comprises specifically is used for:

According to the identification information of this Target cell that carries in this handoff request message, and carry in this switching command message with this handoff request acknowledgement message in be used to generate this first switch key assignments the identical information of information, generate second and switch key assignments.

As shown in Figure 6, in the preferred implementation that the embodiment of the invention two provides, device shown in Figure 5 can further include:

The first key-value pair generation unit 508; Be used to obtain that MSC sends to the connection request CR message of a BSC after receiving the handoff request message that the 2nd BSC sends and CC message is confirmed in connection that a BSC sends to this MSC; And the key assignments that will generate according to the key assignments and the SLR in this CC message of the generation of the source local parameter SLR in this CR message, as first key-value pair;

Correspondingly, first incidence relation is set up unit 503, specifically is used to utilize first to switch first key-value pair that related these first key-value pair generation unit, 508 generations of key assignments are switched in first of key assignments generation unit 502 generations.

As shown in Figure 7, in the preferred implementation that the embodiment of the invention two provides, device shown in Figure 5 can further include:

Call detail record processing unit 509; Be used for after the 3rd incidence relation is set up unit 507 and set up the incidence relation of first key-value pair and the pairing call detail record of this second key-value pair; Switch sign for this call detail record is provided with, and upgrade the field value that is used to write down switching times in this call detail record.

Should be appreciated that unit that the associated apparatus of above call detail record comprises is merely the logical partitioning that the function that realizes according to this device is carried out, and in the practical application, can carry out the stack or the fractionation of said units.And the function that the associated apparatus of the call detail record that this embodiment provides is realized is corresponding one by one with the correlating method flow process of the call detail record that the foregoing description one provides; The more detailed handling process that realizes for this device; In said method embodiment one, done detailed description, be not described in detail here.

As shown in Figure 8, the embodiment of the invention two also provides a kind of device that generates call detail record, comprises each unit and the call detail record generation unit 510 of the associated apparatus of call detail record shown in Figure 5;

Call detail record generation unit 510; Be used for the connection disconnection message that receiving mobile sends under a said BSC; Set up first key-value pair of unit 507 foundation and the incidence relation of the pairing call detail record of said second key-value pair according to the 3rd incidence relation; Obtain the related call detail record of said first key-value pair; And the call detail record that the said call detail record that will obtain and travelling carriage produce under a said BSC merges, and generates the corresponding call detail record of said travelling carriage.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. the correlating method of a call detail record is characterized in that, comprising:

2. the method for claim 1 is characterized in that, the information that information of carrying according to said handoff request message and said handoff request acknowledgement message carry generates first and switches key assignments, comprising:

According to the identification information of the said Target cell that carries in the said handoff request message, and at least one information in value information and the handoff parameter is described, the generation first switching key assignments in the sub-district that said handoff request acknowledgement message carries.

3. the method for claim 1 is characterized in that, carry in information of carrying according to said handoff request message and the said switching command message with said handoff request acknowledgement message in identical information generate second and switch key assignments, comprising:

Identification information according to the said Target cell that carries in the said handoff request message; And carry in the said switching command message with said handoff request acknowledgement message in be used to generate said first switch key assignments the identical information of information, generate second and switch key assignments.

4. like claim 2 or 3 described methods, it is characterized in that the identification information of said Target cell comprises:

The Location Area Code LAC that said Target cell is corresponding is or/and the cell ID CI of said Target cell.

5. the method for claim 1 is characterized in that, sets up the mode that message that SCCP SCCP is connected generates first key-value pair according to a said MSC and a said BSC, comprising:

Obtain that said MSC sends to the connection request CR message of a said BSC after receiving the handoff request message that said the 2nd BSC sends and CC message is confirmed in connection that a said BSC sends to said MSC;

The key assignments that will generate according to the key assignments and the SLR in the said CC message of the generation of the source local parameter SLR in the said CR message is as said first key-value pair.

6. the method for claim 1 is characterized in that, behind the incidence relation of setting up said first key-value pair and the pairing call detail record of said second key-value pair, also comprises:

Switch sign for said call detail record is provided with, and upgrade the field value that is used to write down switching times in the said call detail record.

7. the method based on the described method generation of claim 1 call detail record is characterized in that, comprising:

8. the associated apparatus of a call detail record is characterized in that, comprising:

9. device as claimed in claim 8 is characterized in that, said first switches the key assignments generation unit, specifically is used for:

10. device as claimed in claim 8 is characterized in that, said second switches the key assignments generation unit, specifically is used for:

11. device as claimed in claim 8 is characterized in that, also comprises:

The first key-value pair generation unit; Be used to obtain that said MSC sends to the connection request CR message of a said BSC after receiving the handoff request message that said the 2nd BSC sends and CC message is confirmed in connection that a said BSC sends to said MSC; And the key assignments that will generate according to the key assignments and the SLR in the said CC message of the generation of the source local parameter SLR in the said CR message, as said first key-value pair.

12. device as claimed in claim 8 is characterized in that, also comprises:

The call detail record processing unit; Be used for behind the incidence relation of setting up said first key-value pair and the pairing call detail record of said second key-value pair; Switch sign for said call detail record is provided with, and upgrade the field value that is used to write down switching times in the said call detail record.

13. a device that generates call detail record is characterized in that, comprises each unit and call detail record generation unit that the described device of claim 8 comprises;