CN102420807B - IMS supports the method and system of zone and charging method and system - Google Patents

IMS supports the method and system of zone and charging method and system Download PDF

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CN102420807B
CN102420807B CN201010534677.5A CN201010534677A CN102420807B CN 102420807 B CN102420807 B CN 102420807B CN 201010534677 A CN201010534677 A CN 201010534677A CN 102420807 B CN102420807 B CN 102420807B
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time
network element
zone information
pcscf
information
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CN102420807A (en
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骆旭剑
郭文洁
张玉
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses the method that a kind of IP Multimedia System (IMS) supports zone, Proxy Call Session Control Function (PCSCF) network element is carrying time zone information in conversation initialized protocol (SIP) message sent to the key-course network element except self; After the key-course network element receiving described sip message obtains described time-zone information, in the sip message sent to operation layer network element, carry described time-zone information; Operation layer network element receives the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries.The present invention also discloses a kind of IMS and support the system of zone and charging method and system, pass through the solution of the present invention, in ims time-zone information can be delivered to each network element, and realize user's local zone time when charging data record carries call, improve the accuracy of charging.

Description

IMS supports the method and system of zone and charging method and system
Technical field
The present invention relates to third generation partner program (3GPP) technology, particularly relate to a kind of IP Multimedia System (IMS, IPMultimediaSubsystem) and support the method and system of zone and charging method and system.
Background technology
In the IMS network architecture that third generation partner program (3GPP) describes, a set of core net may cover the user in national multiple time zones, as the situation of the U.S..So subscriber equipment (UE, UserEquipment), Access Layer network element (AccessNetworkNodes), IMS key-course network element, operation layer network element are probably distributed in identical or different time zone separately.And the time-zone information at UE place controls angularly all have very large meaning to the operation of operator from charging, statistics and service quality (QoS).In the existing protocol specification of 3GPP, the message of IMS network architecture carry in the relevant information of timestamp be the standard time information of universal time (UTC, UniversalTimeCoordinated) form.
From the charging angle of operator's profit, different time zones is the corresponding different rates that can join likely, also likely according to the time zone setting preferential rate period, therefore, from the angle of charging, statistics, the time-zone information at UE place says that to operator be very important information.
The charge system defined in existing 3GPP comprises off-line and online charging two parts.
Wherein, offline charging is used for quasi real time reflecting charging and statistical information, and Fig. 1 represents the composition of IMS offline charging functional entity and the relation between them:
Charging triggering function (CTF, ChargingTriggerFunction) be embedded in each network element of 3GPPIMS, comprise Access Layer network element, key-course network element, operation layer network element, the function that it mainly realizes is, according to the service condition of the Internet resources monitored, carry out the collection of charge information, and be sent to charging data function (CDF, ChargingDataFunction) by Rf interface (OfflineChargingReferencePoint); The major function of CDF is, receive the accounting request (ACR that CTF sends, AccountingRequest), be configured to charging data record (CDR, ChargingDataRecord), and be sent to Charging Gateway Functionality (CGF, ChargingGatewayFunction) by Ga interface; The major function of CGF is, carries out store and management to the CDR received from CDF, and by Bi, CDR file is sent to billing domain (BD, BillingDomain).
Online charging is used for using Internet resources to carry out online diameter credit control and statistical information report to UE in real time.As shown in Figure 2, Online Charging System (OCS, OnlineChargingSystem) with BD, service call conversation control function (SCSCF, ServingCallSessionControlFunction) be connected, and in real time and IMS network element pass through the mutual credit control request information of Ro interface (CCR, CreditControlRequest)/diameter credit control response message (CCA, CreditControlAcknowledge); Described IMS network element comprises Multimedia resource function controller (MRFC) (MRFC), application server (AS, ApplicationServer).
3GPPTS32.299 defines the related specifications of off-line, online Diameter message ACR/CCR, and TS32.298 defines the related specifications of CDR.CDR comprises the fields such as numbers of calling and called parties, call time started (ServiceDeliveryStartTimeStamp), end of conversation time (ServiceDeliveryEndTimeStamp), is the key message to user's communication charging.Charge system (BS, BillingSystem) is generally according to the air time computational costs of user.These temporal informations, take from the SIP (SIP in ACR, SessionInitiationProtocol) request time (SIP-Request-Timestamp) and these two property values of sip response time (SIP-Response-Timestamp) are to (AVP, AttributeValuePairs).They are all Time types, have represented the number of seconds of the UTC time format since 1 day January in 1900.
Known by analyzing above, UE place time-zone information cannot be obtained from existing 3GPP normalized definition, like this single, all existing defects in user's charging, bill inquiry, clearing reconciliation etc., when such as implementing preferential period charging, need to carry out preferential calculating according to user's local zone time, in its statistical information, also there will be mistake about telex network time point information, cause customer satisfaction to reduce, affect the business revenue of operator.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of IMS to support the method and system of zone, in ims time-zone information can be delivered to each network element, makes each network element obtain time-zone information.
Another object of the present invention is to provide a kind of IMS charging method and system, user's local zone time when CDR carries call can be realized, improve the accuracy of charging, reduce the possibility of customer complaint, decrease operator's business revenue loss.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of IMS provided by the invention supports the method for zone, and the method comprises:
Proxy Call Session Control Function (PCSCF, ProxyCallSessionControlFunction) network element is carrying time zone information in the sip message sent to the key-course network element except self;
After the key-course network element receiving described sip message obtains described time-zone information, in the sip message sent to operation layer network element, carry described time-zone information;
Operation layer network element receives the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries.
In such scheme, described PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self, for:
When the information that described PCSCF network element trust UE reports, when UE reports time-zone information, PCSCF network element carries the time-zone information that UE reports in the sip message sent to the key-course network element except self; When UE does not report time-zone information, if Access Layer network element provides time-zone information, then PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; If Access Layer network element does not provide time-zone information, then PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self;
When the information that PCSCF distrusts UE to report, when Access Layer network element provides time-zone information, PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; When Access Layer network element does not provide time-zone information, PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self.
In such scheme, carrying of described time-zone information, for: in P access network information (PANI) head of the sip message sent, add described time-zone information.
In such scheme, described Access Layer network element provides time-zone information, for: at session establishment or when discharging, the UE time-zone information known is controlled (PCC, PolicyandChargingControl) framework by strategy and charging and reports PCSCF by Access Layer network element.
A kind of IMS provided by the invention supports the system of zone, and this system comprises: PCSCF network element, the key-course network element except PCSCF, operation layer network element; Wherein,
PCSCF network element, for carrying time zone information in the sip message sent to key-course network element;
Key-course network element, for receiving the described sip message that PCSCF network element sends, and after obtaining described time-zone information, carries described time-zone information in the sip message sent to operation layer network element;
Operation layer network element, for receiving the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries.
In such scheme, this system comprises further: UE, for PCSCF reported by network elements time-zone information;
Access Layer network element, for providing time-zone information or the positional information of UE to PCSCF network element.
In such scheme, described PCSCF network element, specifically for when trusting the information that UE reports, when UE reports time-zone information, carries the time-zone information that UE reports in the sip message sent to the key-course network element except self; When UE does not report time-zone information, if Access Layer network element provides time-zone information, then in the sip message sent to the key-course network element except self, carry the time-zone information that Access Layer network element provides; If Access Layer network element does not provide time-zone information, then self determine the time-zone information of UE, and carry described time-zone information in the sip message sent to the key-course network element except self;
When distrusting the information that UE reports, when Access Layer network element provides time-zone information, in the sip message sent to the key-course network element except self, carry the time-zone information that Access Layer network element provides; When Access Layer network element does not provide time-zone information, self determine the time-zone information of UE, and carry described time-zone information in the sip message sent to the key-course network element except self.
A kind of IMS charging method provided by the invention, the method comprises: PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self;
After the key-course network element receiving described sip message obtains described time-zone information, in the sip message sent to operation layer network element, carry described time-zone information;
Operation layer network element receives the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries;
The each network element obtaining described time-zone information sends the charging request message of carrying time zone information to charging entity;
The charging request message of the carrying time zone information that charging entity sends according to each network element carries out charging process.
In such scheme, described PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self, for:
In such scheme, each network element of the described time-zone information of described acquisition sends the charging request message of carrying time zone information to charging entity, for: in off-line accounting system, the key-course network element comprising PCSCF and the operation layer network element that obtain described time-zone information send the ACR message of carrying time zone information to CDF; In Online Charging System, the key-course network element except PCSCF and the operation layer network element that obtain described time-zone information send the CCR message of carrying time zone information to OCS.
In such scheme, the charging request message of the carrying time zone information that described charging entity sends according to each network element carries out charging process, for: in off-line accounting system, charging entity obtains described time-zone information from the charging request message that each network element sends, and in conjunction with SIP-Request-TimestampAVP, SIP-Response-TimestampAVP of UTC time format, the time field that CDR corresponding to each network element be set comprise effective information, the i.e. UE of UE local zone time UTC time+time-zone information; In Online Charging System, the charging request message of the carrying time zone information that charging entity sends according to each network element obtains the effective information of UE local zone time, and carries out online diameter credit control and statistics according to described effective information.
A kind of IMS charge system provided by the invention, this system comprises: PCSCF network element, the key-course network element except PCSCF, operation layer network element, charging entity; Wherein,
PCSCF network element, for carrying time zone information in the sip message sent to key-course network element, and sends the charging request message of carrying time zone information in off-line accounting system to charging entity;
Key-course network element, for receiving the described sip message that PCSCF network element sends, and after obtaining described time-zone information, carries described time-zone information, and sends the charging request message of carrying time zone information to charging entity in the sip message sent to operation layer network element;
Operation layer network element, for receiving the sip message that described key-course network element sends, and obtaining the described time-zone information that described sip message carries, sending the charging request message of carrying time zone information to charging entity;
Charging entity, carries out charging process for the charging request message sent according to each network element.
In such scheme, described charging entity comprises: the CDF in off-line accounting system or the OCS in Online Charging System;
Described charging request message comprises the ACR message in off-line accounting system or the CCR message in Online Charging System.
IMS provided by the invention supports the method and system of zone and charging method and system, and PCSCF network element is carrying time zone information in the sip message to the key-course network element transmission except self except; After the key-course network element receiving described sip message obtains described time-zone information, in the sip message sent to operation layer network element, carry described time-zone information; Operation layer network element receives the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries; So, in ims time-zone information can be delivered to each network element, make each network element obtain time-zone information, and realize user's local zone time when CDR carries call, improve the accuracy of charging, reduce the possibility of customer complaint, decrease operator's business revenue loss.
Accompanying drawing explanation
Fig. 1 is the structural representation of offline charging functional entity in existing 3GPP network;
Fig. 2 is online charging logical construction schematic diagram in existing 3GPPIMS network;
Fig. 3 is the schematic flow sheet that the present invention realizes that IMS supports the method for zone;
Fig. 4 is the structural representation that the present invention realizes that IMS supports the system of zone;
Fig. 5 is the schematic flow sheet that the present invention realizes IMS charging method;
Fig. 6 is the structural representation that the present invention realizes IMS charge system;
Fig. 7 is the network architecture schematic diagram of the embodiment of the present invention one, two and three;
Fig. 8 is that the reporting information of the embodiment of the present invention one, PCSCF trust UE41 realizes IMS support zone and carries out the schematic flow sheet of the method for offline charging;
Fig. 9 is that the embodiment of the present invention two, PCSCF distrusts that the reporting information of UE41 realizes IMS and supports zone and the schematic flow sheet carrying out the method for online charging;
Figure 10 is that the embodiment of the present invention three, PCSCF distrusts that the reporting information of UE41 realizes IMS and supports zone and the schematic flow sheet carrying out the method for online charging;
Figure 11 is the network architecture schematic diagram of the embodiment of the present invention four;
Figure 12 is that the reporting information of the embodiment of the present invention four, PCSCF trust UE41 realizes IMS support zone and carries out the schematic flow sheet of the method for online charging
Figure 13 be embodiment five and six based on 3GPP in the PCC configuration diagram that defines;
Figure 14 is embodiment five, when session establishment, realizes Access Layer network element provides schematic flow sheet from the method for UE time-zone information to PCSCF;
Figure 15 is embodiment six, when session discharges, realizes Access Layer network element provides schematic flow sheet from the method for UE time-zone information to PCSCF.
Embodiment
Basic thought of the present invention is: PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self; The key-course network element receiving described sip message carries described time-zone information in the sip message sent to operation layer network element.
Below by drawings and the specific embodiments, the present invention is described in further detail.
The present invention realizes a kind of method that IMS supports zone, and as shown in Figure 3, the method comprises following step:
Step 201:PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self;
Concrete, when the information that PCSCF network element reports according to configuration trust UE:
When UE reports time-zone information, PCSCF network element carries the time-zone information that UE reports in the sip message sent to the key-course network element except self;
When UE does not report time-zone information, if Access Layer network element provides time-zone information, then PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; If Access Layer network element does not provide time-zone information, then PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self; Wherein, described PCSCF determines the time-zone information of UE, can be that PCSCF maps out corresponding time-zone information according to the UE positional information that Access Layer network element provides;
When the information that PCSCF distrusts UE to report according to configuration, even if PCSCF receives the time-zone information that UE reports, also the time-zone information using Access Layer network element to provide or the time-zone information of UE self determined are replaced the time-zone information that UE reports, are specially:
When the information that PCSCF distrusts UE to report according to configuration, when Access Layer network element provides time-zone information, PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; When Access Layer network element does not provide time-zone information, PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self; Described PCSCF determines the time-zone information of UE, can be that PCSCF maps out corresponding time-zone information according to the UE positional information that Access Layer network element provides;
In such scheme, carrying of described time-zone information, generally: at the P access network information (PANI of the sip message sent, P-Access-Network-Info) described time-zone information is added in head, described interpolation time-zone information is generally: increase time-zone information field in access information (access-info) part of PANI head, time-zone information is added to described time-zone information field;
Here, described Access Layer network element comprises: PS territory/EPC network element, the Session Border Controller (SBC of 3GPP-UTRAN/EUTRAN access, SessionBorderController), AGCF (AGCF, AccessGatewayControlFunction) etc.; Described evolution block core net (EPC) network element comprises strategy and charging rule functions (PCRF, PolicyandChargingRulesFunction), gateway (S-GW), exchange gateway (P-GW), mobile management entity (MME, MobilityManagementEntity) etc.;
Described key-course network element except self can be SCSCF, ICSCF (InterrogatingCSCF), Breakout Gateway Control Function (BGCF, BreakoutGatewayControlFunction), MGCF (MGCF, MediaGatewayControlFunction) etc.
Step 202: after the key-course network element receiving described sip message obtains described time-zone information, carry described time-zone information in the sip message sent to operation layer network element;
Here, carry described time-zone information in the described sip message sending to operation layer network element, generally, carry the PANI head adding time-zone information in the sip message sent to operation layer network element, described operation layer network element is generally AS.
Step 203: operation layer network element receives the sip message that described key-course network element sends, and obtain the described time-zone information wherein carried;
Here, described acquisition time-zone information, generally, obtains the time-zone information added in the PANI head that described sip message carries.
By above-mentioned steps 201 ~ 202, make the operation layer network element in IMS obtain the time-zone information of UE, the object supporting zone in ims can be reached.
Based on said method, the present invention also provides a kind of IMS to support the system of zone, and as shown in Figure 4, this system comprises: PCSCF network element 31, the key-course network element 32 except PCSCF, operation layer network element 33; Wherein,
PCSCF network element 31, for carrying time zone information in the sip message sent to key-course network element 32;
Key-course network element 32, for receiving the described sip message that PCSCF network element 31 sends, and after obtaining described time-zone information, carries described time-zone information in the sip message sent to operation layer network element 33;
Operation layer network element 33, for receiving the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries;
Further, this system comprises UE34, for reporting time-zone information to PCSCF network element 31;
Further, this system also comprises Access Layer network element, for providing time-zone information or the positional information of UE34 to PCSCF network element 31;
Described PCSCF network element 31 is carrying time zone information in the sip message sent to key-course network element 32, is specially:
When the information that PCSCF network element 31 reports according to configuration trust UE34:
When UE34 reports time-zone information, PCSCF network element 31 carries the time-zone information that UE34 reports in the sip message sent to key-course network element 32;
When UE34 does not report time-zone information, if Access Layer network element provides time-zone information, then PCSCF network element 31 carries the time-zone information that Access Layer network element provides in the sip message sent to key-course network element 32; If Access Layer network element does not provide time-zone information, then PCSCF network element 31 determines the time-zone information of UE34, and carries described time-zone information in the sip message sent to key-course network element 32; Wherein, described PCSCF network element 31 determines the time-zone information of UE34, can be that PCSCF network element 31 maps out corresponding time-zone information according to the UE34 positional information that Access Layer network element provides;
When the information that PCSCF network element 31 reports according to configuration distrust UE34, even if PCSCF network element 31 receives the time-zone information that UE34 reports, also the time-zone information using Access Layer network element to provide or the time-zone information of UE34 self determined are replaced the time-zone information that UE34 reports, are specially:
When the information that PCSCF network element 31 distrusts UE34 to report according to configuration, when Access Layer network element provides time-zone information, PCSCF network element 31 carries the time-zone information that Access Layer network element provides in the sip message sent to key-course network element 32; When Access Layer network element does not provide time-zone information, PCSCF network element 31 determines the time-zone information of UE34, and carries described time-zone information in the sip message sent to the key-course network element 32 except self; Described PCSCF network element 31 determines the time-zone information of UE34, can be that PCSCF network element 31 maps out corresponding time-zone information according to the UE34 positional information that Access Layer network element provides;
In such scheme, carrying of described time-zone information, generally: in the PANI head of the sip message sent, add time-zone information, described interpolation time-zone information generally: increase time-zone information field in the access information part of PANI head, time-zone information is added to described time-zone information field;
Described operation layer network element 33 obtains the described time-zone information that described sip message carries, and is specially: described operation layer network element 33 obtains the time-zone information added in the PANI head that described sip message carries.
Based on said method, the present invention also realizes a kind of IMS charging method, and as shown in Figure 5, the method comprises following step:
Step 401:PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self;
Concrete, when the information that PCSCF network element reports according to configuration trust UE:
When UE reports time-zone information, PCSCF network element carries the time-zone information that UE reports in the sip message sent to the key-course network element except self;
When UE does not report time-zone information, if Access Layer network element provides time-zone information, then PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; If Access Layer network element does not provide time-zone information, then PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self; Wherein, described PCSCF determines the time-zone information of UE, can be that PCSCF maps out corresponding time-zone information according to the UE positional information that Access Layer network element provides;
When the information that PCSCF distrusts UE to report according to configuration, even if PCSCF receives the time-zone information that UE reports, also the time-zone information using Access Layer network element to provide or the time-zone information of UE self determined are replaced the time-zone information that UE reports, are specially:
When the information that PCSCF distrusts UE to report according to configuration, when Access Layer network element provides time-zone information, PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; When Access Layer network element does not provide time-zone information, PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self; Described PCSCF determines the time-zone information of UE, can be that PCSCF maps out corresponding time-zone information according to the UE positional information that Access Layer network element provides;
In such scheme, carrying of described time-zone information, generally: in the PANI head of the sip message sent, add time-zone information, described interpolation time-zone information generally: increase time-zone information field in the access information part of PANI head, time-zone information is added to described time-zone information field;
Here, described Access Layer network element comprises: the PS territory/EPC network element of 3GPP-UTRAN/EUTRAN access, SBC, AGCF etc.;
Described key-course network element except self can be SCSCF, ICSCF, BGCF, MGCF etc.
Step 402: after the key-course network element receiving described sip message obtains described time-zone information, carry described time-zone information in the sip message sent to operation layer network element;
Here, carry described time-zone information in the described sip message sending to operation layer network element, generally, carry the PANI head adding time-zone information in the sip message sent to operation layer network element, described operation layer network element is generally AS.
Step 403: operation layer network element receives the sip message that described key-course network element sends, and obtain the described time-zone information wherein carried;
Here, described acquisition time-zone information, generally, obtains the time-zone information added in the PANI head that described sip message carries.
Step 404: each network element obtaining described time-zone information sends the charging request message of carrying time zone information to charging entity;
Concrete, in off-line accounting system, the key-course network element comprising PCSCF and the operation layer network element that obtain described time-zone information send the ACR message of carrying time zone information to CDF; In Online Charging System, the key-course network element except PCSCF and the operation layer network element that obtain described time-zone information send the CCR message of carrying time zone information to OCS; Described key-course network element except PCSCF comprises SCSCF and MRCF etc.;
Wherein, the ACR message of described transmission carrying time zone information, generally, added to by time-zone information in Access-Network-InformationAVP, ACR message carries described Access-Network-InformationAVP, and this mode is called for short ANI mode; Or newly increase a time zone AVP, added to by time-zone information in the time zone AVP newly increased, ACR message carries described time zone AVP, and this mode is called for short TZ mode;
The CCR message of described transmission carrying time zone information, generally, added to by time-zone information in Access-Network-InformationAVP, CCR message carries described Access-Network-InformationAVP; Or newly increase a time zone AVP, added to by time-zone information in the time zone AVP newly increased, CCR message carries described time zone AVP.
Step 405: the charging request message of the carrying time zone information that charging entity sends according to each network element carries out charging process;
Concrete, in off-line accounting system, charging entity obtains described time-zone information from the charging request message that each network element sends, and in conjunction with SIP-Request-TimestampAVP, SIP-Response-TimestampAVP of UTC time format, the time field that CDR corresponding to each network element be set comprise effective information, the i.e. UE of UE local zone time UTC time+time-zone information; In Online Charging System, the charging request message of the carrying time zone information that charging entity sends according to each network element obtains the effective information of UE local zone time, and carries out online diameter credit control and statistics according to described effective information.
In order to realize said method, the present invention also provides a kind of IMS charge system, and as shown in Figure 6, this system comprises: PCSCF network element 51, the key-course network element 52 except PCSCF, operation layer network element 53, charging entity 54; Wherein,
PCSCF network element 51, for carrying time zone information in the sip message sent to key-course network element 52, and sends the charging request message of carrying time zone information in off-line accounting system to charging entity 54;
Key-course network element 52, for receiving the described sip message that PCSCF network element 51 sends, and after obtaining described time-zone information, in the sip message sent to operation layer network element 53, carry described time-zone information, and send the charging request message of carrying time zone information to charging entity 54;
Operation layer network element 53, for receiving the sip message that described key-course network element sends, and obtaining the described time-zone information wherein carried, sending the charging request message of carrying time zone information to charging entity 54;
Charging entity 54, carries out charging process for the charging request message sent according to each network element;
Concrete, when offline charging, charging entity 54 obtains described time-zone information from the charging request message that each network element sends, and in conjunction with SIP-Request-TimestampAVP, SIP-Response-TimestampAVP of UTC time format, the time field arranging CDR corresponding to each network element comprises the effective information of UE local zone time; When online charging, the charging request message of the carrying time zone information that charging entity 54 sends according to each network element obtains the effective information of UE local zone time, and carries out online diameter credit control and statistics according to described effective information.
In above-mentioned, described charging entity 54 comprises: the CDF in off-line accounting system or the OCS in Online Charging System; Described charging request message comprises the ACR message in off-line accounting system or the CCR message in Online Charging System;
In above-mentioned, when described charging request message is ACR message, the charging request message of described transmission carrying time zone information, is generally, added to by time-zone information in Access-Network-InformationAVP, ACR message carries described Access-Network-InformationAVP; Or newly increase a time zone AVP, added to by time-zone information in the time zone AVP newly increased, ACR message carries described time zone AVP;
Further, this system comprises UE55, for reporting time-zone information to PCSCF network element 51;
Further, this system also comprises Access Layer network element, for providing time-zone information or the positional information of UE55 to PCSCF network element 51;
Described PCSCF network element 51 is carrying time zone information in the sip message sent to key-course network element 52, is specially:
When the information that PCSCF network element 51 reports according to configuration trust UE55:
When UE55 reports time-zone information, PCSCF network element 51 carries the time-zone information that UE55 reports in the sip message sent to key-course network element 52;
When UE55 does not report time-zone information, if Access Layer network element provides time-zone information, then PCSCF network element 51 carries the time-zone information that Access Layer network element provides in the sip message sent to key-course network element 52; If Access Layer network element does not provide time-zone information, then PCSCF network element 51 determines the time-zone information of UE55, and carries described time-zone information in the sip message sent to key-course network element 52; Wherein, described PCSCF network element 51 determines the time-zone information of UE55, can be that PCSCF network element 51 maps out corresponding time-zone information according to the UE55 positional information that Access Layer network element provides;
When the information that PCSCF network element 51 reports according to configuration distrust UE55, even if PCSCF network element 51 receives the time-zone information that UE55 reports, also the time-zone information using Access Layer network element to provide or the time-zone information of UE55 self determined are replaced the time-zone information that UE55 reports, are specially:
When the information that PCSCF network element 51 distrusts UE55 to report according to configuration, when Access Layer network element provides time-zone information, PCSCF network element 51 carries the time-zone information that Access Layer network element provides in the sip message sent to key-course network element 52; When Access Layer network element does not provide time-zone information, PCSCF network element 51 determines the time-zone information of UE55, and carries described time-zone information in the sip message sent to the key-course network element 52 except self; Described PCSCF network element 51 determines the time-zone information of UE55, can be that PCSCF network element 51 maps out corresponding time-zone information according to the UE55 positional information that Access Layer network element provides;
In such scheme, carrying of described time-zone information, generally: in the PANI head of the sip message sent, add time-zone information, described interpolation time-zone information generally: increase time-zone information field in the access information part of PANI head, time-zone information is added to described time-zone information field;
Described operation layer network element 53 obtains the described time-zone information that described sip message carries, and is specially: described operation layer network element 53 obtains the time-zone information added in the PANI head that described sip message carries.
Implementation procedure and the principle of method of the present invention is described in detail below in conjunction with specific embodiment.
Embodiment one
In the present embodiment network architecture as shown in Figure 7, UE41 reports time-zone information, PCSCF42 trusts the reporting information of UE41 according to configuration, 1 ≠ time zone, time zone 2, adopt ANI mode when Calling Side (IMS-A) carrying time zone information, realize IMS charging method, as shown in Figure 8, the method comprises following step:
Step 501:UE41 carries the PANI head adding time-zone information in the INVITE request sent to PCSCF42;
Concrete, described UE41 expands PANI head, and access information part wherein increases time-zone information field, adds self place time-zone information to described time-zone information field, carries described PANI head afterwards in the INVITE request sent to PCSCF42.
After step 502:PCSCF42 receives described INVITE request, in the INVITE request sent to SCSCF43, carry the PANI head adding time-zone information;
After what step 503:SCSCF43 received that PCSCF42 sends carry the INVITE request of PANI head, in the INVITE request sent to signing AS44, carrying described PANI head;
After what step 504:AS44 received that SCSCF43 send carry the INVITE request of PANI head, the INVITE sending self to SCSCF43 asks, and carries described PANI head;
Step 505:SCSCF43 sends the INVITE carrying described PANI head to be asked to callee side network element;
Step 506: callee side network element sends 200OK response to SCSCF43;
Step 507:SCSCF43 sends 200OK response to AS44;
Step 508:AS44 replys 200OK response to SCSCF43;
Step 509:AS44 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
Step 510:CDF45 receive AS44 send ACR message after, open an ASCDR, according to the time-zone information in described ACR, the time field arranging ASCDR comprises the effective information of UE41 local zone time, namely UE41 UTC time+time-zone information;
Step 511:SCSCF43 sends 200OK response to PCSCF42;
Step 512:SCSCF43 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
After step 513:CDF45 receives the ACR message of SCSCF43 transmission, open a SCSCFCDR, according to the time-zone information in described ACR, the time field arranging SCSCFCDR comprises the effective information of UE41 local zone time;
Step 514:PCSCF42 sends 200OK response to UE41;
Step 515:PCSCF42 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
After step 516:CDF45 receives the ACR message of PCSCF42 transmission, open a PCSCFCDR, according to time-zone information in described ACR, the time field arranging PCSCFCDR comprises the effective information of UE41 local zone time.
Embodiment two
In the present embodiment network architecture as shown in Figure 7, UE41 reports or does not report time-zone information, Access Layer network element provides time-zone information to PCSCF42, and PCSCF42 distrusts the reporting information of UE41 according to configuration, then when offline charging, realize IMS charging method, as shown in Figure 9, the method comprises following step:
Step 601:UE41 carries or not carrying time zone information in the INVITE request sending SIP to PCSCF42, and Access Layer network element is carrying time zone information in the INVITE request sending SIP to PCSCF42;
In this step, carrying time zone information in the INVITE request that described UE41 or Access Layer network element send, is specially: carry the PANI head adding time-zone information in the INVITE request that described UE41 or Access Layer network element send.
Step 602:PCSCF42 asks according to the INVITE of Access Layer network element, in the INVITE request sent to SCSCF43, carry the PANI head adding time-zone information;
In this step, because PCSCF42 distrusts UE41 reporting information according to configuration, when UE41 sends carrying time zone information in the INVITE request of SIP, the PANI head comprising time-zone information carried in the INVITE request of PCSCF42 Access Layer network element replaces the PANI head in the INVITE request of UE41, and the PANI head carry replacement in the INVITE request sent to SCSCF43 after; UE41 to send in the INVITE request of SIP not carrying time zone information time, PCSCF42 carries the PANI head comprising time-zone information obtained from the INVITE of Access Layer network element asks in the INVITE request sent to SCSCF43.
After what step 603:SCSCF43 received that PCSCF42 sends carry the INVITE request of PANI head, in the INVITE request sent to signing AS44, carrying described PANI head;
After what step 604:AS44 received that SCSCF43 send carry the INVITE request of PANI head, the INVITE sending self to SCSCF43 asks, and carries described PANI head;
Step 605:SCSCF43 sends the INVITE carrying described PANI head to be asked to callee side network element;
Step 606: callee side network element sends 200OK response to SCSCF43;
Step 607:SCSCF43 sends 200OK response to AS44;
Step 608:AS44 replys 200OK response to SCSCF43;
Step 609:AS44 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
The present embodiment adopts the mode of expansion PANI head to carry UE41 place time-zone information, correspond to the Access-Network-InformationAVP in charging message Diameter, if adopt other mode to carry UE41 place time-zone information, then UE41 place time-zone information also can be increased in DiameterACR message as independent AVP or the existing AVP expanded in other ACR message sends to CDF45 by AS44.
Step 610:CDF45 receive AS44 send ACR message after, open an ASCDR, according to the time-zone information in described ACR message, the time field arranging ASCDR comprises the effective information of UE41 local zone time, namely UE41 UTC time+time-zone information;
Step 611:SCSCF43 sends 200OK response to PCSCF42;
Step 612:SCSCF43 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
The present embodiment adopts the mode of expansion PANI head to carry user place time-zone information, if adopt other mode to carry, then UE41 place time-zone information also can be increased in DiameterACR message as independent AVP or the existing AVP expanded in other ACR message sends to CDF45 by SCSCF43.
After step 613:CDF45 receives the ACR message of SCSCF43 transmission, open a SCSCFCDR, according to the time-zone information in described ACR message, the time field arranging SCSCFCDR comprises the effective information of UE41 local zone time;
Step 614:PCSCF42 sends 200OK response to UE41;
Step 615:PCSCF42 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
The present embodiment adopts the mode of expansion PANI head to carry user place time-zone information, if adopt other mode to carry, then UE41 place time-zone information also can be increased in DiameterACR message as independent AVP or the existing AVP expanded in other ACR message sends to CDF45 by PCSCF42.
After step 616:CDF45 receives the ACR message of PCSCF42 transmission, open a PCSCFCDR, according to the time-zone information in described ACR message, the time field arranging PCSCFCDR comprises the effective information of UE41 local zone time.
Embodiment three
In the present embodiment network architecture as shown in Figure 6, UE41 and Access Layer network element do not provide time-zone information, and PCSCF42 determines the time-zone information of UE41 according to positional information, then when offline charging, realize IMS charging method, as shown in Figure 10, the method comprises following step:
Step 701:UE41 sends the INVITE request of SIP to PCSCF42;
After step 702:PCSCF42 receives described INVITE request, in the INVITE request sent to SCSCF43, carry the PANI head adding time-zone information;
In this step, the positional information at the UE41 place that PCSCF provides according to UE41 or Access Layer network element, as: tracing area (TA, or cell ID CellID etc. TrackingArea), in the allocation list of self, map out the time-zone information at UE41 place, and described time-zone information is added in the PANI head of the INVITE request sent to SCSCF43; Allocation list on described PCSCF refers to the form of the mapping relations of reaction UE position information and the corresponding UE place time-zone information allowing operator to configure voluntarily.
After what step 703:SCSCF43 received that PCSCF42 sends carry the INVITE request of PANI head, in the INVITE request sent to signing AS44, carrying described PANI head;
After what step 704:AS44 received that SCSCF43 send carry the INVITE request of PANI head, the INVITE sending self to SCSCF43 asks, and carries described PANI head;
Step 705:SCSCF43 sends the INVITE carrying described PANI head to be asked to callee side network element;
Step 706: callee side network element sends 200OK response to SCSCF43;
Step 707:SCSCF43 sends 200OK response to AS44;
Step 708:AS44 replys 200OK response to SCSCF43;
Step 709:AS44 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
The present embodiment adopts the mode of expansion PANI head to carry UE41 place time-zone information, correspond to the Access-Network-InformationAVP in charging message Diameter, if adopt other mode to carry, then UE41 place time-zone information also can be increased in DiameterACR message as independent AVP or the existing AVP expanded in other ACR message sends to CDF45 by AS44.
Step 710:CDF45 receive AS44 send ACR message after, open an ASCDR, according to the time-zone information in described ACR message, the time field arranging ASCDR comprises the effective information of UE41 local zone time, namely UE41 UTC time+time-zone information;
Step 711:SCSCF43 sends 200OK response to PCSCF42;
Step 712:SCSCF43 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
The present embodiment adopts the mode of expansion PANI head to carry UE41 place time-zone information, if adopt other mode to carry, then UE41 place time-zone information also can be increased in DiameterACR message as independent AVP or the existing AVP expanded in other ACR message sends to CDF45 by SCSCF43.
After step 713:CDF45 receives the ACR message of SCSCF43 transmission, open a SCSCFCDR, according to the time-zone information in described ACR message, the time field arranging SCSCFCDR comprises the effective information of UE41 local zone time;
Step 714:PCSCF42 sends 200OK response to UE41;
Step 715:PCSCF42 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the ACR message of carrying Access-Network-InformationAVP to CDF45;
The present embodiment adopts the mode of expansion PANI head to carry UE41 place time-zone information, if adopt other mode to carry, then UE41 place time-zone information also can be increased in DiameterACR message as independent AVP or the existing AVP expanded in other ACR message sends to CDF45 by PCSCF42.
After step 716:CDF45 receives the ACR message of PCSCF42 transmission, open a PCSCFCDR, according to the time-zone information in described ACR message, the time field arranging PCSCFCDR comprises the effective information of UE41 local zone time.
Embodiment four
In the present embodiment, UE41 reports time-zone information, and PCSCF trusts the reporting information of UE according to configuration, in the network architecture as shown in figure 11,2 ≠ time zone, 1 ≠ time zone, time zone 3, adopts ANI mode by Calling Side UE41 (IMS-A) carrying time zone information, when online charging, realize IMS charging method, as shown in figure 12, the method comprises following step:
Step 801:UE41 sends the INVITE request of SIP to PCSCF42, carries the PANI head containing UE41 time-zone information;
After step 802:PCSCF42 receives described INVITE request, in the INVITE request sent to SCSCF43, carry the PANI head adding time-zone information;
Concrete, after PCSCF42 receives described INVITE request, the time-zone information that PCSCF42 reports according to configuration trust UE41, will add the PANI head transparent transmission of time-zone information, namely in the INVITE request sent to SCSCF43, carry the PANI head adding time-zone information.
After what step 803:SCSCF43 received that PCSCF42 sends carry the INVITE request of PANI head, in the INVITE request sent to signing AS44, carrying described PANI head;
After what step 804:AS44 received that SCSCF43 send carry the INVITE request of PANI head, the INVITE sending self to SCSCF43 asks, and carries described PANI head;
Step 805:SCSCF43 sends the INVITE carrying described PANI head to be asked to callee side network element;
Step 806: callee side network element sends 200OK response to SCSCF43;
Step 807:SCSCF43 sends 200OK response to AS44;
Step 808:AS44 replys 200OK response to SCSCF43;
Step 809:AS44 fills in Access-Network-InformationAVP according to the time-zone information in PANI head, and sends the CCR message of carrying Access-Network-InformationAVP to OCS45;
The present embodiment adopts the mode of expansion PANI head to carry UE41 place time-zone information, correspond to the Access-Network-InformationAVP in charging message Diameter, if adopt other mode to carry, then UE41 place time-zone information also can be increased in DiameterCCR message as independent AVP or the existing AVP expanded in other CCR message sends to OCS45 by AS44.
Step 810:OCS45 obtains the effective information of UE41 local zone time according to the time-zone information in described CCR message, and carries out online diameter credit control and statistics according to described effective information;
Step 811:SCSCF43 sends 200OK response to PCSCF42;
Step 812:SCSCF43 sends the INVITE request of carrying PANI head to IMS Gateway Function (IMS-GWF), IMS-GWF fills in Access-Network-InformationAVP according to the time-zone information in described PANI head, and sends the CCR message of carrying Access-Network-InformationAVP to OCS45;
The present embodiment adopts the mode of expansion PANI head to carry UE41 place time-zone information, correspond to the Access-Network-InformationAVP in charging message Diameter, if adopt other mode to carry, then UE41 place time-zone information also can be increased in DiameterCCR message as independent AVP or the existing AVP expanded in other CCR message sends to OCS45 by SCSCF43.
Step 813:OCS45 obtains the effective information of UE41 local zone time according to the time-zone information in described CCR message, and carries out online diameter credit control and statistics according to described effective information;
Step 814:PCSCF42 sends 200OK response to UE41.
More than be the embodiment of caller initiation session, the end of other travelling carriages exhales in flow process similar to the above embodiments to the process of UE place time-zone information, repeats no more.
All adopt the mode of expansion PANI head to transmit time-zone information in above embodiment, other modes transmitting time-zone information also comprise: adopt separately an information field or expand other fields to transmit time-zone information.
Because some country may only have a time zone, that is: there is not the problem of disposing core net across time zone, as: the various countries etc. of European Union, transmitting between UE place time-zone information net in this case, is optional according to the demand of local operator.
The process of time-zone information is provided to be specifically described below by Access Layer network element in embodiment five and six pairs of embodiments two to PCSCF, embodiment five and six is all based on the PCC framework defined in the 3GPP shown in Figure 13, PCRF is according to user-subscribed database (SPR, SubscriptionProfileRepository) CAMEL-Subscription-Information, the business information that AF issues and bearing binding and event reporting function (BBERF, the event information of the triggering charging policy BearingBindingandEventReportFunction) reported and QoS change issues new strategy and carries out strategy and charging control, PCEF carries out online and deferred information transmission respectively by Gy and Gz interface.
Embodiment five
In the present embodiment, when session establishment, realize Access Layer network element provides UE time-zone information to PCSCF method by PCC framework, as shown in figure 14, the method comprises following step:
Step 901: when IMS session establishment, the resource needed for PCSCF authorisation session, and provide business information to PCRF, notice PCRF reports UE time-zone information;
Step 902: when being PMIP-S5/S8 agreement between P-GW and S-GW, PCRF initiates gate and QoS rule provides process and triggers S-GW distribution dedicated bearer, and S-GW carries the UE time-zone information that MME provides in gate and the response of QoS rule; When being GTP-S5/S8 agreement between P-GW and S-GW, PCRF initiates charging and QoS rule provides process and triggers P-GW distribution dedicated bearer, and P-GW carries the UE time-zone information that MME provides in charging and the response of QoS rule;
Concrete, when being PMIP-S5/S8 agreement between P-GW and S-GW, this step comprises following step:
Step 902-a:PCRF provides gate and QoS rule to S-GW;
Step 902-b:S-GW sends to MME and creates carrying request;
Step 902-c:MME intended media carries, and obtains UE time-zone information;
Step 902-d:MME returns to S-GW and creates carrying response, and carries UE time-zone information in establishment carrying response;
Step 902-e:S-GW returns gate and the response of QoS rule to PCRF, in gate and the response of QoS rule, carry UE time-zone information.
When being GTP-S5/S8 agreement between P-GW and S-GW, this step comprises following step:
Step 902-A:PCRF provides charging and QoS rule to P-GW;
Step 902-B:P-GW sends to S-GW and creates carrying request;
Step 902-C:S-GW forwards to MME and creates carrying request;
Step 902-D:MME intended media carries, and obtains UE time-zone information;
Step 902-E:MME returns to S-GW and creates carrying response, and carries UE time-zone information in establishment carrying response;
Step 902-F:S-GW forwards to P-GW and creates carrying response, carries UE time-zone information in described establishment carrying response;
Step 902-G:P-GW returns charging and the response of QoS rule to PCRF, in charging and the response of QoS rule, carry UE time-zone information.
Step 903:PCRF sends described UE time-zone information to PCSCF after the UE time-zone information as carrying level events being detected;
Step 904:PCSCF responds PCRF.
Embodiment six
In the present embodiment, when session discharges, realize Access Layer network element provides UE time-zone information to PCSCF method by PCC framework, as shown in figure 15, the method comprises following step:
Step 1001:PCSCF removes the resource relevant with releasing bearing and notifies that PCRF reports UE time-zone information after detecting that session release event initiates IMS session release flow process;
In this step, described in detect that session release event can be receive SIPBYE message etc.
Step 1002: when being PMIP-S5/S8 agreement between P-GW and S-GW, PCRF initiates gate and QoS rule provides process and triggers S-GW deexcitation dedicated bearer, and S-GW carries the UE time-zone information that MME provides in gate and the response of QoS rule; When being GTP-S5/S8 agreement between P-GW and S-GW, PCRF initiates charging and QoS rule provides process and triggers P-GW deexcitation dedicated bearer, and P-GW carries the UE time-zone information that MME provides in charging and the response of QoS rule;
Concrete, when being PMIP-S5/S8 agreement between P-GW and S-GW, this step comprises following step:
Step 1002-a:PCRF provides gate and QoS rule to S-GW;
Step 1002-b:S-GW sends deleting bearing request to MME;
Step 1002-c:MME deletes media bearer, and obtains UE time-zone information;
Step 1002-d:MME returns deleting bearing response to S-GW, and carries UE time-zone information in deleting bearing response;
Step 1002-e:S-GW returns gate and the response of QoS rule to PCRF, in gate and the response of QoS rule, carry UE time-zone information.
When being GTP-S5/S8 agreement between P-GW and S-GW, this step comprises following step:
Step 1002-A:PCRF provides charging and QoS rule to P-GW;
Step 1002-B:P-GW sends deleting bearing request to S-GW;
Step 1002-C:S-GW forwards deleting bearing request to MME;
Step 1002-D:MME deletes media bearer, and obtains UE time-zone information;
Step 1002-E:MME returns deleting bearing response to S-GW, and carries UE time-zone information in deleting bearing response;
Step 1002-F:S-GW forwards deleting bearing response to P-GW, carries UE time-zone information in described deleting bearing response;
Step 1002-G:P-GW returns charging and the response of QoS rule to PCRF, in charging and the response of QoS rule, carry UE time-zone information.
Step 1003:PCRF sends described UE time-zone information to PCSCF after the UE time-zone information as carrying level events being detected;
Step 1004:PCSCF responds PCRF.
What deserves to be explained is, the UE time-zone information in conversation procedure likely changes, and whether operator can notify PCSCF as carrying level events by PCRF according to the change of the requirements set time-zone information of oneself; If needed, when then PCRF detects that time-zone information changes, notice PCSCFUE time-zone information changes, PCSCF sends the INFO of SIP and carries the time-zone information after change to the key-course except self and operation layer network element, and trigger charging request message and be sent to charging entity, charging entity can time-zone information after the inner record change of partial CDR (PartialCDR).But, this also can cause very high network-signaling load, and time-zone information in session to change occurrence probability very little, great majority operation commercial city can not increase offered load in order to so little probability selection.
By method of the present invention, in ims time-zone information can be delivered to each network element, and realize user's local zone time when CDR carries call, improve the accuracy of charging, reduce the possibility of customer complaint, decrease operator's business revenue loss.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (14)

1. IP Multimedia System (IMS) supports a method for zone, and it is characterized in that, the method comprises:
Proxy Call Session Control Function (PCSCF) network element is carrying time zone information in SIP (SIP) message sent to the key-course network element except self; Described time-zone information is: the time-zone information that UE reports or the time-zone information provided for Access Layer network element or the time-zone information of described UE self determined for described PCSCF; Wherein, the time-zone information of the described UE that described PCSCF determines self, for: described PCSCF maps the time-zone information of the correspondence obtained according to the UE positional information that Access Layer network element provides;
After the key-course network element receiving described sip message obtains described time-zone information, in the sip message sent to operation layer network element, carry described time-zone information;
Operation layer network element receives the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries.
2. method according to claim 1, is characterized in that, described PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self, for:
When the information that described PCSCF network element trust subscriber equipment (UE) reports, when UE reports time-zone information, PCSCF network element carries the time-zone information that UE reports in the sip message sent to the key-course network element except self; When UE does not report time-zone information, if Access Layer network element provides time-zone information, then PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; If Access Layer network element does not provide time-zone information, then PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self;
When the information that PCSCF distrusts UE to report, when Access Layer network element provides time-zone information, PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; When Access Layer network element does not provide time-zone information, PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self.
3. method according to claim 2, is characterized in that, carrying of described time-zone information, for: in P access network information (PANI) head of the sip message sent, add described time-zone information.
4. method according to claim 2, it is characterized in that, described Access Layer network element provides time-zone information, for: at session establishment or when discharging, the UE time-zone information known is controlled (PCC) framework by strategy and charging and reports PCSCF by Access Layer network element.
5. IMS supports a system for zone, and it is characterized in that, this system comprises: PCSCF network element, the key-course network element except PCSCF, operation layer network element; Wherein,
PCSCF network element, for carrying time zone information in the sip message sent to key-course network element; Described time-zone information is: the time-zone information that UE reports or the time-zone information provided for Access Layer network element or the time-zone information of described UE self determined for described PCSCF; Wherein, the time-zone information of the described UE that described PCSCF determines self, for: described PCSCF maps the time-zone information of the correspondence obtained according to the UE positional information that Access Layer network element provides;
Key-course network element, for receiving the described sip message that PCSCF network element sends, and after obtaining described time-zone information, carries described time-zone information in the sip message sent to operation layer network element;
Operation layer network element, for receiving the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries.
6. system according to claim 5, is characterized in that, this system comprises further: UE, for PCSCF reported by network elements time-zone information;
Access Layer network element, for providing time-zone information or the positional information of UE to PCSCF network element.
7. system according to claim 6, it is characterized in that, described PCSCF network element, specifically for when trusting the information that UE reports, when UE reports time-zone information, in the sip message sent to the key-course network element except self, carry the time-zone information that UE reports; When UE does not report time-zone information, if Access Layer network element provides time-zone information, then in the sip message sent to the key-course network element except self, carry the time-zone information that Access Layer network element provides; If Access Layer network element does not provide time-zone information, then self determine the time-zone information of UE, and carry described time-zone information in the sip message sent to the key-course network element except self;
When distrusting the information that UE reports, when Access Layer network element provides time-zone information, in the sip message sent to the key-course network element except self, carry the time-zone information that Access Layer network element provides; When Access Layer network element does not provide time-zone information, self determine the time-zone information of UE, and carry described time-zone information in the sip message sent to the key-course network element except self.
8. an IMS charging method, is characterized in that, the method comprises: PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self; Described time-zone information is: the time-zone information that UE reports or the time-zone information provided for Access Layer network element or the time-zone information of described UE self determined for described PCSCF; Wherein, the time-zone information of the described UE that described PCSCF determines self, for: described PCSCF maps the time-zone information of the correspondence obtained according to the UE positional information that Access Layer network element provides;
After the key-course network element receiving described sip message obtains described time-zone information, in the sip message sent to operation layer network element, carry described time-zone information;
Operation layer network element receives the sip message that described key-course network element sends, and obtains the described time-zone information that described sip message carries;
The each network element obtaining described time-zone information sends the charging request message of carrying time zone information to charging entity;
The charging request message of the carrying time zone information that charging entity sends according to each network element carries out charging process.
9. method according to claim 8, is characterized in that, described PCSCF network element is carrying time zone information in the sip message sent to the key-course network element except self, for:
When the information that described PCSCF network element trust UE reports, when UE reports time-zone information, PCSCF network element carries the time-zone information that UE reports in the sip message sent to the key-course network element except self; When UE does not report time-zone information, if Access Layer network element provides time-zone information, then PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; If Access Layer network element does not provide time-zone information, then PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self;
When the information that PCSCF distrusts UE to report, when Access Layer network element provides time-zone information, PCSCF network element carries the time-zone information that Access Layer network element provides in the sip message sent to the key-course network element except self; When Access Layer network element does not provide time-zone information, PCSCF determines the time-zone information of UE, and carries described time-zone information in the sip message sent to the key-course network element except self.
10. method according to claim 8, it is characterized in that, each network element of the described time-zone information of described acquisition sends the charging request message of carrying time zone information to charging entity, for: in off-line accounting system, the key-course network element comprising PCSCF and the operation layer network element that obtain described time-zone information send accounting request (ACR) message of carrying time zone information to charging data function (CDF); In Online Charging System, the key-course network element except PCSCF and the operation layer network element that obtain described time-zone information send credit control request (CCR) message of carrying time zone information to Online Charging System (OCS).
11. methods according to claim 8, it is characterized in that, the charging request message of the carrying time zone information that described charging entity sends according to each network element carries out charging process, for: in off-line accounting system, charging entity obtains described time-zone information from the charging request message that each network element sends, and in conjunction with the SIP request time attribute value of UTC time format to (SIP-Request-TimestampAVP), sip response time attribute value is to (SIP-Response-TimestampAVP), the time field arranging charging data record corresponding to each network element (CDR) comprises the effective information of UE local zone time, namely UE UTC time+time-zone information, in Online Charging System, the charging request message of the carrying time zone information that charging entity sends according to each network element obtains the effective information of UE local zone time, and carries out online diameter credit control and statistics according to described effective information.
12. 1 kinds of IMS charge systems, is characterized in that, this system comprises: PCSCF network element, the key-course network element except PCSCF, operation layer network element, charging entity; Wherein,
PCSCF network element, for carrying time zone information in the sip message sent to key-course network element, and sends the charging request message of carrying time zone information in off-line accounting system to charging entity; Described time-zone information is: the time-zone information that UE reports or the time-zone information provided for Access Layer network element or the time-zone information of described UE self determined for described PCSCF; Wherein, the time-zone information of the described UE that described PCSCF determines self, for: described PCSCF maps the time-zone information of the correspondence obtained according to the UE positional information that Access Layer network element provides;
Key-course network element, for receiving the described sip message that PCSCF network element sends, and after obtaining described time-zone information, carries described time-zone information, and sends the charging request message of carrying time zone information to charging entity in the sip message sent to operation layer network element;
Operation layer network element, for receiving the sip message that described key-course network element sends, and obtaining the described time-zone information that described sip message carries, sending the charging request message of carrying time zone information to charging entity;
Charging entity, carries out charging process for the charging request message sent according to each network element.
13. systems according to claim 12, it is characterized in that, described PCSCF network element, specifically for when trusting the information that UE reports, when UE reports time-zone information, in the sip message sent to the key-course network element except self, carry the time-zone information that UE reports; When UE does not report time-zone information, if Access Layer network element provides time-zone information, then in the sip message sent to the key-course network element except self, carry the time-zone information that Access Layer network element provides; If Access Layer network element does not provide time-zone information, then self determine the time-zone information of UE, and carry described time-zone information in the sip message sent to the key-course network element except self;
When distrusting the information that UE reports, when Access Layer network element provides time-zone information, in the sip message sent to the key-course network element except self, carry the time-zone information that Access Layer network element provides; When Access Layer network element does not provide time-zone information, self determine the time-zone information of UE, and carry described time-zone information in the sip message sent to the key-course network element except self.
14. systems according to claim 12, is characterized in that, described charging entity comprises: the CDF in off-line accounting system or the OCS in Online Charging System;
Described charging request message comprises the ACR message in off-line accounting system or the CCR message in Online Charging System.
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