CN100563291C - Charging method in the mobile communication system - Google Patents
Charging method in the mobile communication system Download PDFInfo
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- CN100563291C CN100563291C CNB2005100291328A CN200510029132A CN100563291C CN 100563291 C CN100563291 C CN 100563291C CN B2005100291328 A CNB2005100291328 A CN B2005100291328A CN 200510029132 A CN200510029132 A CN 200510029132A CN 100563291 C CN100563291 C CN 100563291C
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
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Abstract
The present invention relates to mobile communication technology, disclose the charging method in a kind of mobile communication system, make between system or realize accurately chargeing when switching between multi-operator.Among the present invention, neither when switching each time, generate interim UDR simply, handover information neither be filled out in a ticket, but only between the judgement system or the condition of switching between operator generate interim UDR when satisfying, wherein except the ticket information of routine, also comprise sign and switch the preceding system or the identification information of operator, in the interim UDR cause value, increased between the expression system or the enumerated value that switches between operator.Open ticket for after the interim UDR next, except the ticket information of routine, also comprise the system after sign is switched or the identification information of operator.
Description
Technical field
The present invention relates to mobile communication technology, particularly the billing technology in the mobile communication system.
Background technology
Mobile communication technology enters second generation mobile communication (The Second Generation from 20 end of the centurys, be called for short " 2G ") since, obtained developing rapidly, (the Global Systemof Mobile communication of global system for mobile communications wherein, be called for short " GSM ") rely on it to use widely, become the maximum mobile commercial network that the whole world covers at present.
But along with the increase of number of users, and to the improving constantly of requirements such as class of business and performance, 2G demonstrates the restriction at aspects such as data transmission capabilities gradually.Therefore, the 3G (Third Generation) Moblie that data transmission capabilities is stronger (The Third Generation, be called for short " 3G ") has entered the high speed development stage, and moving communicating field presents by 2G progressively to the situation of 3G transition.In 3G network, Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access is called for short " WCDMA ") network has shown good growth momentum gradually as its main flow.
Yet operator wishes that from building the comprehensive benefit of 3G network utilization as much as possible have the GSM network, so GSM and WCDMA will existence jointly within very long one period, mixed networking.
At third generation partner program (3rd Generation Partnership Project, abbreviation " 3GPP ") in the agreement, under the WCDMA system architecture, (the Mobile Switching Center of mobile switching centre, be called for short " MSC ") can be simultaneously and RNS (the Radio Network Subsystem of 3G, be called for short " RNS ") and the base station sub-system (Base Station Subsystem is called for short " BSS ") of 2G link to each other.This agreement allows the user freely to switch between 2G network and 3G network.
For the switching between 2G system and the 3G system, operator has formulated different expenses standard at 2G with the conversation under the 3G network to the user, with the difference on corresponding 2G and the 3G network construction cost, and encourages the user to use 3G network more.Therefore, when switching between the different Access Networks has taken place in communication process the user, then this user's telephone expenses should be deducted fees by different expenses standards according to the length of Access Network use, need a kind of charging method that operator charges of being convenient to accordingly.
Introduce 3 kinds of solutions commonly used at present below.
According to first kind of solution, in the ticket interface of 3GPP protocol definition, the value of " access network type (systemType) " field has " 2G access ", " 3G access " and " the unknown ".Like this, under the situation that does not take place to switch between access net system, the access network that the user uses can be known easily in operator, thereby calculates different telephone expenses.But it is, just powerless for the situation that has taken place to switch between system.
Second kind of solution derives from 3GPP TS 32.205 agreements, and this agreement has provided following scheme to the charging under the switch instances:
When taking place from WCDMA to WCDMA or from WCDMA to GSM or from GSM to WCDMA, to switch, initial MSC such as the MSC (controllingMSC) of the MSC (anchorMSC) of grappling or control should remain the control to calling out, and is responsible for whole calling and produces corresponding charging bill.
And in order to reduce unnecessary trouble, follow-up MSC need not call out for this and produce ticket.When switch taking place, initial MSC should note information such as the time of taking place of switching, position in corresponding ticket.
In conjunction with correlation technique one and two, can provide following example: user A initiates mobile originating, at x1 the once intra-system handover from WCDMA to WCDMA takes place constantly; After this, at x2 the once switching from WCDMA to GSM takes place constantly, behind the end of calling, MSC only can produce a mobile originating ticket (MOC).Except the timestamp that has write down normal call answering and release, also write down moment x1, x2 that twice switching takes place in this ticket, and each positional information of switching.In addition, according to above-mentioned 3GPP TS32.205 protocol requirement, owing to took place to switch between system, " access network type " in the mobile originating ticket (systemType) extends this as " the unknown ".
The shortcoming that the said method that agreement provides exists is: operator can't determine to use the time period of 2G and use 3G respectively from this mobile originating ticket.
The third solution is actually the scheme of the generation interim UDR of stipulating in the agreement.It is pointed out that the ticket that sends for the calling subscriber is the ticket that starts (MOC), the ticket that sends for the called subscriber is a termination ticket (MTC), if when the air time, situations long or other following definitions took place, then produces interim UDR:
1: the interim UDR timer expiry;
2: basic service code change (as: change of speech business-data service etc.) in the communication process;
3: (changeOfLocation that is: can produce interim UDR to position change when switching.But specially do not refer to switch between system or between operator, can't distinguish) with general switching;
4: the change of travelling carriage rank (MS classmark);
5: request call charge service parameter (AoC parameter) change;
6: wireless channel type (Radio Channel) change;
7: call re-establishment (call re-establishment);
The 8:HSCSD parameter modification;
9: intelligent purpose routing change.
In this case, agreement also allows this ticket producing method: switch the moment of taking place each, for the side of switching user produces corresponding interim UDR, the interim UDR cause value is position change (changeOfLocation).Solve user's charge thus, and operator is based on the problem of switching statistics between the system of ticket.
More than introduced at present at the billing scheme that relates in the switching between 2G system and the 3G system.In actual applications, there is following problem in such scheme: at first, and between system, switching, if according to agreement associated methods one and two, MSC only produces a mobile originating ticket, and to user's charge, and operator is not accurate enough based on switching statistics between the system of ticket.And if according to the method three that agreement provides, all produce interim UDR each time according to cause values such as " position changes ", then because MSC load is excessive, be not a kind of practical solution.Therefore, the above-mentioned several method that needs comprehensive agreement to provide is also improved, for " the accurate charging of switching between access net system " proposes a kind of practical solution.
In addition, defined a kind of network shared service pattern among the 3GPP TS22.951 (V6.1.0).A kind of typical application mode of this pattern is exactly the shared MSC of a plurality of operators, and Access Network then is to be built together by each operator, and referring to Fig. 1, the user of how tame operator can roam in the Access Network that different operators is undertaken the construction of and switch.For this situation, do not provide at present a kind of effective method can solve user's accurate charging of (this switching occurs under the same MSC) when taking place to switch between operator on the agreement as yet.
Can also amplify out thus, under another kind of network shared service pattern, many tame operators have undertaken the construction of part core net and part Access Network separately, referring to Fig. 2, the user of how tame operator can be in core net that different operators is undertaken the construction of and Access Network roaming and switching.For this situation, do not provide at present a kind of effective method can solve the accurate charging (this switching may occur between the MSC of different operators) of user when taking place to switch between operator on the agreement as yet yet.
Summary of the invention
In view of this, main purpose of the present invention is to provide the charging method in a kind of mobile communication system, makes between system or realizes accurately chargeing when switching between multi-operator.
For achieving the above object, the invention provides the charging method in a kind of mobile communication system, comprise following steps:
When switching, mobile switching centre judges whether this switching is between different system or the switching between different operators, described mobile switching centre describedly switches between different access net systems or during the switching between different operators judging, produce interim UDR, in this interim UDR, comprise sign at least and switch the preceding system or the information of operator.
Wherein, if the access network type difference at subscriber equipment place before and after switching, the switching between different system has taken place in then described mobile switching centre decidable.
In this external described method, comprise one of following content or its combination in any in the described interim UDR at least:
Access network type information before switching, extends this as the value of expression interim UDR implication and the value that extends this as switching implication between the expression system in the field of expression interim UDR cause value at call starting moment, the duration of call in expression produces the field of cause value of ticket.
In this external described method, described mobile communication system is the system of 2G and 3G mixed networking.
In this external described method, if the sub-district before and after switching belongs to different operators respectively, the switching between different operators has taken place in then described mobile switching centre decidable.
In this external described method, described mobile switching centre can judge whether the sub-district before and after switching belongs to different operators respectively according to the predefined sub-district and the attaching relation information of operator.
In this external described method, if the mobile switching centre before and after switching belongs to different operators respectively, the switching between different operators has taken place in the then responsible Controlling MSC decidable that generates ticket.
In this external described method, comprise one of following content or its combination in any in the described interim UDR at least:
The sign of access carrier before representative is switched, call starting moment, the duration of call, in producing the field of cause value of ticket, expression extends this as the value of expression interim UDR implication and the value that in the field of expression interim UDR cause value, extends this as switching implication between expression operator.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, neither when switching each time, generate interim UDR simply, handover information neither be filled out in a ticket, but only between the judgement system or the condition of switching between operator generate interim UDR when satisfying, wherein except the ticket information of routine, also comprise sign and switch the preceding system or the identification information of operator, in the interim UDR cause value, increased between the expression system or the enumerated value that switches between operator.
Difference on this technical scheme, brought comparatively significantly beneficial effect, be that operator can know that accurately the user uses the period of 2G Access Network and 3G Access Network respectively by user's ticket that MSC produces after switching between system, for accurately charging and statistics provide foundation.
The network shared model is that unitary core net, multi-operator are set up under the situation of Access Network separately, after the user takes place to switch between operator, multi-operator knows accurately that by user's ticket that MSC produces the user uses the period of each operator's Access Network respectively, for accurately charging and statistics provide foundation.
This MSC switches to as controlling MSC under the situation of MSC of other operators, after the user takes place to switch between operator, multi-operator knows accurately that by user's ticket that controlling MSC produces the user uses the period of each operator's Access Network respectively, for accurately charging and statistics provide foundation.
Description of drawings
Fig. 1 is in the prior art during multi-operator shared network, schematic network structure;
Fig. 2 is the schematic network structure when how tame operator has undertaken the construction of part core net and part Access Network separately in the prior art;
Fig. 3 is the implementation method flow chart that accurately charges when switching between the system of first embodiment of the invention;
Fig. 4 is the implementation method flow chart that accurately charges when switching between the multi-operator of second embodiment of the invention;
Fig. 5 is that the MSC according to third embodiment of the invention belongs to the implementation method flow chart that accurately charges when different operators switches.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Generally speaking, core of the present invention is judge by MSC whether this switching is between different system or the switching between different operators when the user switches, determines whether to need to produce interim UDR.Specifically, if the switching between different system, the moment of then switching between system produces interim UDR, and in this interim UDR, comprise the information of the system before sign is switched, and the initial moment and the duration of call, and afterwards next opened the information that comprises the connecting system after sign is switched in ticket, thus the accurate charging when switching between the realization system; If belong to the switching of the minizone of different operators under the same MSC, the period that then in this interim UDR, comprises definite this operator's Access Network of use of preceding operator's access sign of switching and user, and afterwards next opened the information that the operator that comprises in ticket after sign is switched inserts sign, thus the accurate charging when realizing switching between multi-operator.Wherein, whether be that the basis for estimation of different operators can be each sub-district that is provided with in advance of MSC and the attaching relation between the operator to this switching.In addition, if this MSC switches to the MSC of other operators as controlling MSC, then produce interim UDR by controlling MSC, the information such as sign, call start time and the duration of call that comprise access carrier before switching, and the operator that comprises in next ticket afterwards after sign is switched inserts the information that identifies, thereby know that accurately the user uses the period of each operator's Access Network respectively, the accurate charging when realizing switching between multi-operator.Wherein, whether be that the judgement of different operators each adjacent MSC that can be provided with in advance according to MSC and the attaching relation between the operator carry out to this switching.
For the situation of Fig. 1 (region that all users of A of operator and B can the enjoy network service is the All Ranges that wireless access network A and wireless access network B are covered), when certain user switches to wireless access network B by wireless access network A, according to technical scheme of the present invention, just should produce interim UDR and distinguish customer charge and share to which operator.
For the situation among Fig. 2 (all users of A of operator and B can enjoy network the region of service be the All Ranges that wireless access network A1 and wireless access network B1 are covered), when certain user switches to wireless access network B1 by wireless access network A1, according to technical scheme of the present invention, just should distinguish customer charge and share at initial MSC (this MSC is and switches controlling MSC) generation interim UDR to which operator.
Next with reference to Fig. 3, describe, in this method, switch between user's generation systems according to the charging method in the mobile communication system of the first embodiment of the present invention.
As shown in Figure 3, in step 210, judge whether the access network type at subscriber equipment place changes before and after switching, and judges just whether the user switching has taken place between different system.If the access network type at subscriber equipment place does not change before and after switching, just illustrate that switching, process ends have taken place the user between same system; If change has taken place in the access network type at subscriber equipment place before and after switching, just illustrate that switching has taken place the user between different system, for example switch to gsm system or switch to the WCDMA system from gsm system from the WCDMA system, enter step 220.
In step 220, MSC generates interim UDR, this interim UDR is used to realize the accurate charging the when user is switched between system, therefore in this ticket, to write down and the relevant information of chargeing, as the access network type information before switching, (specifically the mode of filling in are seen step 230) such as the call starting moment, the duration of calls.As seen, in the present embodiment, being not the user generates interim UDR at the Shi Douhui that switches each time, only just can generate interim UDR when the switching of judging the user is switching between system.This is because if the user is switched between same system, and the access network type before and after switching with regard to explanation so is consistent, does not influence charging, also just need not to generate interim UDR.
Then execution in step 230 is filled in the specifying information in the interim UDR.Described in step 220, interim UDR is the accurate charging that is used for realizing when the user is switched between system, therefore will write down the access network type information before switching, the call starting moment, the duration of call etc.In addition, also in the field of the cause value of representing the generation ticket, extend this as the value of expression interim UDR implication and the value that in the field of expression interim UDR cause value, extends this as switching implication between the expression system.Such as, the access network type of user at the preceding place of switching is 3G, the access network type that switches the place, back is 2G, call starting is x1 constantly, the duration of call is t, the value of expression interim UDR implication is " interim UDR ", the value of switching implication between the expression system is " switching between system ", so, in the interim UDR that after the user is switching, is being generated, just should in the access network type field, fill in " 3G ", call starting is filled in " x1 " in the field constantly, fill in the duration of call field " t ", fill in " interim UDR " in the cause value field of generation ticket, fill in " switching between system " in the cause value field of interim UDR.Need to prove, in former protocols having, do not switch the value of implication between the expression system, that is to say, in the field of interim UDR cause value, increase the enumerated value that switches implication between an expression system newly.After next open that access network type extends this as " 2G " in ticket.
Then, enter step 240, with moment of current switching be the initial moment, begin new user's ticket.At above-mentioned case, if the user from the moment that 3G network switches to the 2G network be x2, so, be the initial moment just with x2, begin new user's ticket.
The interim UDR of present embodiment by carrying out the user being generated after the switching between system accurately known the employed access network type of user and inserted the period, thus the accurate charging when having realized switching between system.
Next with reference to the charging method in Fig. 4 explanation mobile communication system according to a second embodiment of the present invention, this method is applied to belong to situation about switching between the sub-district of different operators under same MSC.
As shown in Figure 4, at first, in step 310, MSC judge the user switch before and after the sub-district at place whether belong to different operators, judge just whether this user the switching between different operators has taken place.It is pointed out that this judgement is a foundation with the attaching relation information of predefined sub-district and operator.That is to say, MSC sets up tables of data in advance, which operator each location area cell is respectively under the minute book MSC, when switching, whether the change of judging positional information cross operator, if crossed over operator, with regard to illustrate the user switch before and after the sub-district at place belong to different operators, otherwise, switch the sub-district at place, front and back and belong to same operator with regard to the user is described.Such as the user is sub-district 1 in the sub-district at the preceding place of switching, user sub-district at place after switching is sub-district 2, and can know that from the attaching relation of sub-district and operator sub-district 1 is to belong to the A of operator, sub-district 2 is to belong to the B of operator, so, the place sub-district of this user before and after switching belongs to different operators, that is to say that the switching between different operators has taken place this user.If MSC draws the user through judgement switching between different operators having taken place, has just entered step 320, otherwise, process ends.
In step 320, MSC generates interim UDR, this interim UDR is the accurate charging that is used for realizing when the user is switched between different operators, therefore in this ticket, to write down and the relevant information of chargeing, as the sign of access carrier before switching, (specifically the mode of filling in are seen step 330) such as the call starting moment, the duration of calls.As seen, in the present embodiment, switch for the minizone under the same MSC, being not the user generates interim UDR at the Shi Douhui that switches each time, only just can generate interim UDR when the switching of judging the user is switching between different operators.This is because if the user is switched between same operator, and the sign of the access carrier before and after so just explanation is switched is consistent, does not influence charging, also just need not to generate interim UDR.
Then, enter step 330, fill in the specifying information in the interim UDR.Described in step 320, interim UDR is used to realize the accurate charging the when user is switched between different operators, therefore will write down the access carrier sign before switching, the call starting moment, the duration of call etc.In addition, also in the field of the cause value of representing the generation ticket, extend this as the value of expression interim UDR implication and the value that in the field of expression interim UDR cause value, extends this as switching implication between expression operator.Such as, the user is A in the sign of the access carrier at the preceding place of switching, the sign of switching the access carrier at place, back is B, call starting is x1 constantly, the duration of call is t, the value of expression interim UDR implication is " interim UDR ", the value of switching implication between expression operator is " switching between operator ", so, in the interim UDR that after the user is switching, is being generated, just should in the access carrier identification field, fill in " A ", call starting is filled in " x1 " in the field constantly, fill in the duration of call field " t ", fill in " interim UDR " in the cause value field of generation ticket, fill in " switching between operator " in the cause value field of interim UDR.Need to prove, in former protocols having, do not represent to switch between operator the value of implication, that is to say, in the field of interim UDR cause value, increase the enumerated value that switches implication between an expression operator newly.After next open that operator's sign extends this as B in ticket.
Then, enter step 340, with moment of current switching be the initial moment, begin new user's ticket.At above-mentioned case, if the user from the moment that the A of operator switches to the B of operator be x2, so, be the initial moment just with x2, begin new user's ticket.
In the network shared model is that unitary core net, multi-operator are set up under the situation of Access Network separately, the interim UDR of present embodiment by carrying out the user being generated after the switching between multi-operator, know that accurately the user uses the period of each operator's Access Network respectively, thus the accurate charging when having realized between operator switching.
Next illustrate that with reference to Fig. 5 charging method in the mobile communication system of a third embodiment in accordance with the invention, this method are applied to situation about switching between the different MS C of different operators belonging to.
Shown in the accompanying drawing 5, after the switching between the MSC that belongs to different operators step 410 judgement user, in step 420, multi-operator generates interim UDR by controlling MSC, this interim UDR is used for accurately knowing that the user uses the period of each operator's Access Network respectively, for accurately charging and statistics provide foundation.Therefore in this ticket, to write down and the relevant information of chargeing, as switch the sign of preceding access carrier, the call starting moment, the duration of call etc.
Then, enter step 430, fill in the specifying information in the interim UDR.This step is identical with step 330, does not repeat them here.
Then, enter step 440, with moment of current switching be the initial moment, begin new user's ticket.This step is identical with step 340, does not repeat them here.
The present embodiment and second embodiment are similar, also are to set up tables of data earlier, and operator's subordinate relation of wherein pre-configured each MSC that links to each other with this MSC is when inter-office switchover takes place, by inquiring about this table to judge whether to have taken place the switching between operator.Know accurately that by user's ticket that MSC produces the user uses the period of each operator's Access Network respectively, thereby be implemented in the accurate charging when switching between different operators.This shows that the present embodiment and second embodiment are basic identical, difference only is the difference of application scenarios.Second embodiment is applied to the situation that a sub-district under the MSC belongs to different operators.And present embodiment is to be applied to the situation that different MS C belongs to different operators, such as the sub-district under each MSC belongs to same operator, so, if carry out switching between operator, just need this MSC to switch to the MSC of other operators as controlling MSC.
Though by with reference to some preferred embodiment of the present invention, the present invention is illustrated and describes, those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (8)
1. the charging method in the mobile communication system is characterized in that, comprises following steps:
When switching, mobile switching centre judges whether this switching is between different access net systems or the switching between different operators, described mobile switching centre describedly switches between different access net systems or during the switching between different operators judging, produce interim UDR, in this interim UDR, comprise sign at least and switch the preceding access net system or the information of operator.
2. the charging method in the mobile communication system according to claim 1 is characterized in that, if the access network type difference at subscriber equipment place before and after switching, the switching between different access net systems has taken place then described mobile switching centre decidable.
3. the charging method in the mobile communication system according to claim 2 is characterized in that, comprises following content in the described interim UDR:
Access network type information before switching, call starting moment, the duration of call, expression produce the value of the expression interim UDR implication of filling in the field of cause value of ticket and the expression system of in the field of expression interim UDR cause value, filling between the value of switching implication.
4. according to the charging method in each described mobile communication system in the claim 1 to 3, it is characterized in that described mobile communication system is the system of 2G and 3G mixed networking.
5. the charging method in the mobile communication system according to claim 1 is characterized in that, if the sub-district before and after switching belongs to different operators respectively, the switching between different operators has taken place then described mobile switching centre decidable.
6. the charging method in the mobile communication system according to claim 5, it is characterized in that described mobile switching centre can judge whether the sub-district before and after switching belongs to different operators respectively according to the predefined sub-district and the attaching relation information of operator.
7. the charging method in the mobile communication system according to claim 1, it is characterized in that, if the mobile switching centre before and after switching belongs to different operators respectively, the switching between different operators has taken place in the then responsible Controlling MSC decidable that generates ticket.
8. according to the charging method in each described mobile communication system in the claim 5 to 7, it is characterized in that, comprise following content in the described interim UDR:
The sign of access carrier before representative is switched, call starting moment, the duration of call, expression produce the value of the expression interim UDR implication of filling in the field of cause value of ticket and the expression operator of in the field of expression interim UDR cause value, filling between the value of switching implication.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100291328A CN100563291C (en) | 2005-08-26 | 2005-08-26 | Charging method in the mobile communication system |
| PCT/CN2006/002136 WO2007022711A1 (en) | 2005-08-26 | 2006-08-22 | A method and device for generating intermediate call ticket in mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100291328A CN100563291C (en) | 2005-08-26 | 2005-08-26 | Charging method in the mobile communication system |
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| Publication Number | Publication Date |
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| CN1889617A CN1889617A (en) | 2007-01-03 |
| CN100563291C true CN100563291C (en) | 2009-11-25 |
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| CNB2005100291328A Expired - Fee Related CN100563291C (en) | 2005-08-26 | 2005-08-26 | Charging method in the mobile communication system |
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| CN (1) | CN100563291C (en) |
| WO (1) | WO2007022711A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621563A (en) * | 2008-06-30 | 2010-01-06 | 深圳富泰宏精密工业有限公司 | Call charge management system and method therefor |
| CN103164389B (en) * | 2011-12-14 | 2015-10-28 | 中国移动（深圳）有限公司 | A kind of disposal route of user-defined format plane ticket and system |
| CN108650102B (en) * | 2012-07-23 | 2021-06-01 | 华为技术有限公司 | Charging information processing method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2352932B (en) * | 1999-07-31 | 2003-10-08 | Ericsson Telefon Ab L M | Charging control in a mobile telecommunications system |
| JP3986352B2 (en) * | 2002-04-23 | 2007-10-03 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication system, mobile communication terminal, charging method |
| CN100492952C (en) * | 2003-03-28 | 2009-05-27 | 华为技术有限公司 | Soft switching roaming charging mehod |
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2005
- 2005-08-26 CN CNB2005100291328A patent/CN100563291C/en not_active Expired - Fee Related
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- 2006-08-22 WO PCT/CN2006/002136 patent/WO2007022711A1/en active Application Filing
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| CN1889617A (en) | 2007-01-03 |
| WO2007022711A1 (en) | 2007-03-01 |
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