Background technology
The cellular cell structure is to utilize the finite frequency resource to solve the important breakthrough of regional coverage and large user's capacity communication issue on a large scale, when first cell mobile communication systems was about to occur in the world in 1979, MacDonald.VH has delivered on U.S.'s Bell System Technical Journal and has been entitled as " The Cellular Concept " literary composition, to cellular cell structuring concept, principle and the relevant analysis of mobile communication, done more comprehensive introduction for the first time.This has become the basis and the realization principle of Modern Mobile Communications Systems structure.
PoC (Push-to-talk over Cellular) (Push to talk over Cellular) business is a kind of novel mobile communication business that OMA (Open Mobile Alliance-is open mobile interconnected) proposes, this business realizes the function of similar intercom on mobile phone, as long as the PoC cellphone subscriber need not dial just can with the someone or certain group carries out one to one or the conversation of one-to-many by next dedicated array of keys.Be different from early stage special-purpose PTT (Push-to-talk) wireless system based on simulation or circuit-switched technology, PoC is based upon on the IP Multimedia System (IMS) as a kind of applied business, and its basic characteristics comprise: be independent of the wireless access technology that is adopted; IP-based half-duplex voice; Control (Floor Control) based on the session control of SIP (Session initiation Protocol) with based on the right to speak of RTP (RTP); The PoC system is as the application server of IMS network and be based upon on the basis of IMS core net.
Current PoC standard is supported one to one PoC session (1-1 PoC Session), interim PoC cluster conversation (Ad-hoc PoC Group Session), is arranged PoC cluster conversation (Pre-arranged PoC Group Session) and chat PoC cluster conversation (Chat PoCGroup Session) in advance.Wherein, interim PoC cluster conversation is set up on the mode similar to PoC session one to one at PoC session, all be to initiate a session request to other PoC users' URI (universal resource identifier) by certain PoC user to set up, different is one to one in the PoC session certain PoC user only set up session with another PoC user, and certain PoC user sets up session with a plurality of PoC users simultaneously in the interim PoC cluster conversation; The pre-PoC cluster conversation of arranging is then set up on the mode similar to chat PoC cluster conversation at PoC session, all be to initiate a session request to the URI of certain PoC group by certain PoC user to set up, different is in the pre-PoC of arrangement cluster conversation, in case certain arranges the PoC user in the PoC group to initiate call request to this group in advance, if setting up system as yet, this cluster conversation will initiatively not arrange the every other user in the PoC group to initiate a session request in advance to this, and in chat PoC cluster conversation, this calling subscriber only adds this chat PoC cluster conversation and other users in this chat PoC group is not initiated a session request.
According to OMA standard " Push to talk over Cellular (PoC)-Architecture; Candidate Version 1.0-17March 2005 " and 3GPP (third generation collaborative project) standard TS23.228 V6.9.0 (2005-03), the PoC system configuration as shown in Figure 1.P-CSCF among Fig. 1 (agent call State Control function), I-CSCF (inquiry CSCF) and S-CSCF (service call State Control function) constitute IMS core (IMS Core), finish core network function such as the control of IMS basic session, sip message route, business excite.HSS (home subscriber server) is user's configure database server, is used to store user position information and user's business datums such as various CAMEL-Subscription-Information.The PoC server is the IMS application server of PoC service, finishes functions such as PoC session processing, distribution of media, right to speak control, cluster conversation tactical management; The required group list data of PoC group communication are with XML (extendible SGML) form tissue and by XDMS (XML document management server) storage and management, wherein, can supply shared group list data of various OMA applied business such as URI tabulation etc. by shared XDMS storage and management, and the group list data of PoC service special use comprise that PoC group (PoC Groups) and PoC user access policies (PoC User Access Policy) etc. are then by PoC XDMS storage and management.XDMS except can being visited by the application corresponding server, also allow PoC user by aggregation proxy (Aggregation Proxy) visit with the establishment of carrying out XML document, revise, obtain or bookkeeping such as deletion.Presence server is the application server of presence service, can be PoC user other PoC state of user and available informations are provided.The interface relevant with XDMS all adopts XCAP (XML configuration access agreement) agreement, the ISC interface of PoC server, PoC XDMS and shared XDMS and S-CSCF all adopts Session Initiation Protocol, and wherein the ISC interface of PoC XDMS and shared XDMS and S-CSCF is used for the subscription (Subscription) and the notice (Notification) of incident that the group list XML document is revised.Detailed description about SIP and XCAP agreement, can be respectively with reference to standard RFC3261 and the draft " The ExtensibleMarkup Language (XML) Configuration Access protocol (XCAP) " of IETF (internet engineering task group), J.Rosenberg, Feb.2005, http://www.ietf.org/internet-drafts/draft-ietf-simple-xcap-06.t xt ", can be about the detailed description of PoC with reference to " http://member.openmobilealliance.org/ftp/Public_documents/POC/P ermanent_documents/ " given PoC series of canonical.
The PoC server is divided into control PoC function and participates in the PoC function on logical construction, PoC server entity is for certain PoC session or carry out and participate in PoC function or control PoC function.The participant of a PoC session may connect a plurality of different PoC servers, and the function that each relevant PoC server is born is determined when this PoC session is set up, and remaining unchanged is all over until this PoC session.In PoC session one to one and interim PoC cluster conversation, the PoC server at the user place that initiates a session request will be responsible for bearing control PoC function; Arrange in PoC cluster conversation and the chat PoC cluster conversation pre-, the PoC server that the URI of PoC group is resolved to each group membership URI will be responsible for bearing control PoC function.In the PoC system, the PoC server of bearing control PoC function will be responsible for controlled function such as the right to speak control of corresponding PoC session and distribution of media, bear the PoC server function such as the right to speak control messages relaying of responsible corresponding PoC session and media relays then that participates in the PoC function.Wherein,, be sent to the PoC server of bearing control PoC function and bearing in the initial session request of the PoC server that participates in the PoC function, all will carry the URI of corresponding PoC group pre-arrangement PoC cluster conversation and chat PoC group.
According to draft TS32.272V1.0.0 (2005-02) " Push-to-talk over Cellular (PoC) charging " and the technical report TR23.979V6.0.0 (2004-12) " 3GPP enablers for OMA PoC Services " of 3GPP (third generation collaborative project), PoC supports 3GPP standard TS32.240 and described non real-time offline charging of TS32.260 and real-time online charging dual mode.
In PoC billing structure shown in Figure 2, Online Charging System (OCS) is used for online in real time and charges, and it links to each other by Ro interface with the PoC server; CDF (charging data function) and CGF (Charging Gateway Functionality) are used for offline charging, the PoC server provides gateway to charge information and generates CDR (charging data record) by CDF to CDF by Rf interface, and CGF then will be generated the CDR file and finally be transferred to bill system by the CDR that CDF provides by the Ga interface.Wherein, described Ro, Rf interface all adopt Diameter to communicate.For the purposes such as clearing between telephone expenses statistics, the operator, online charging also allows to produce CDR, can realize optional CGF function in OCS for this reason.
For the ease of PoC service is chargeed, the described PoC charging of draft TS32.272V1.0.0 (2005-02) principle according to 3GPP, PoC service is broken down into early-session (Early-Session) and sets up, PoC session participates in, instant individual reminds (Instant personalalert), (PoC talk burst) transmission of PoC talkburst and reception and PoC group advertisement (PoC group advertisement) etc. are a plurality of can be by the subservice of independent counting, each subservice then may be the participant of PoC session by charged party, the PoC session promoter, the owner of PoC group, the user of corresponding subservice waits and play the part of the PoC user of different role in PoC session, which kind of subservice is responsible for paying by the PoC user who plays the part of which kind of role in the PoC session in the real system, can also can in the PoC server, carry out pre-configured by OCS (to the situation of online charging) or bill system (to the situation of offline charging) decision.Draft " Push to Talk Over Cellular 2 Requirements; Version 2.0-17March 2005 " with reference to OMA, increase along with the PoC service ability, as support the independently right to speak control etc. of medium types such as image, video, multimedia and each media weight, to occur more can be by the subservice of independent counting and new for the charged party type for PoC service in new version, but above-mentioned charging principle is still identical.
According to 3GPP standard TS32.299 V6.2.0 (2005-03), TS32.260 V6.1.0 (2005-03) and draft TS32.272 V1.0.0 (2005-02), to the situation of offline charging, the charging request message " Accounting-Request " that the charge information that the PoC server produces utilizes Diameter basic agreement (RFC3588) (ACR) and response message " Accounting-Answer " (ACA) be sent to CDF; To the situation of online charging, the credit control request information " Credit-Control-Request " that the charge information that the PoC server produces then utilizes Diameter credit control application protocol (referring to http://www.ietf.org/internet-drafts/draft-ietf-aaa-diameter-cc-06.txt) (CCR) and its response message " Credit-Control-Answer " (CCA) be sent to OCS.
In the AVP of Fig. 3 and ACR shown in Figure 4 and CCR (property value to) structure, the AVP of ACR is made up of Diameter basic agreement AVP and business information AVP, the AVP of CCR is made up of Diameter basic agreement AVP, Diameter credit control application protocol AVP and business information AVP, wherein, business information AVP comprises the relevant IMS-Information AVP and the distinctive PoC-Information AVP of PoC service of PS-Information AVP, IMS of packet switched bearer.PoC-Information AVP has comprised that all reflection PoC distinctive charging property parameters charge to PoC service by mentioned above principle supporting, as the parameter of the relevant subservice charging property of reflection PoC of TS32.272V1.0.0 (2005-02) defined " PoC Server Role ", " PoCSession Type ", " PoC Subscriber Session Role " and other justice undetermined.Wherein, " PoC Subscriber SessionRole " promptly reflected the role of this user in above-mentioned PoC session.All comprise AVP " User-Name " among the Diameter basic agreement AVP of offline charging ACR message and online charging CCR message, and also comprised AVP " Subscription-Id " among the Diameter credit of the online charging CCR message control application protocol AVP.Standard TS32.299V6.2.0 (2005-03) and TS 32.296 V6.0.0 (2004-12) according to 3GPP, described AVP " User-Name " has comprised unique identification IMS subscription user's private user identity (PrivateUser Identity), AVP " Subscription-Id " is made up of AVP " Subscription-Id-Type " and AVP " Subscription-Id-Data ", be used for identifying online charging by charged party.
In existing P oC billing technology, system is based on expenses standards such as the charge mode of each subservice of PoC that is adopted, rates, situation to offline charging, bill system waits the charging relevant information according to user ID among the CDR and the role of this user of indication in this PoC session, utilizes to reflect among the CDR that this user uses the detailed recorded data of the relevant subservice of PoC can finish the wholesale price settlement process of PoC service ticket; Situation for online charging, OCS is according to waiting the charging relevant information from the indicated role of PoC user in this PoC session of AVP " User-Name " in the CCR message of Ro interface, utilize this user of reflection who is transmitted in this message to use the detailed recorded data of the relevant subservice of PoC, control based on undertaken by the charged party account balance real time billing and credit that " Subscription-Id " is indicated.
On the other hand, PoC service distinguishing feature is to realize arranging in advance the communication of particular demographic such as PoC group, chat PoC group.This type of hoc group mainly is at group user or enterprise customer, they often make up one or more PoC group within it in the particular group such as portion or its particular customer group for the needs of group's business, to this type of PoC group communication, its expense is more common user's request by the unified payment of corresponding group or enterprise under certain condition.This payment scheme will help the PoC service operator and open up group user market and enlarge PoC service amount and running income, this scheme also makes group or enterprise customer in the individual telephone expenses that guarantee effectively to avoid or reduce when own service is effectively carried out the private character of payment simultaneously, therefore will help carrying out and implementing of PoC service.
But the role that prior art is taken in PoC session according to the user in bill system/OCS or PoC server carries out fixed configurations to each subservice paying side of PoC, will be difficult to solve the different charging problem in different group paying side.Though may utilize group information to carry out wholesale price in the bill system of backstage to the situation of offline charging handles, but bill system can not directly be visited PoC XDMS in the prior art, and the paying attribute of the also undefined PoC group member of group list data among the PoC XDMS, and the attribute of PoC group comprises that member etc. allows the user to on-the-fly modify, and therefore is difficult to solve backstage bill system non real-time and handles problem with the dynamic change of PoC group.To the situation of online charging, owing to the paying attribute of group list data among the PoC XDMS and undefined PoC group member, therefore also difficult realization is at the real time billing and the credit control of different group different charge side equally.
In addition as mentioned above, an important application of PoC group communication is towards group user or enterprise customer, often need traffic carrying capacity, number of users, industry characteristic etc. to formulate rate preferential policy targetedly to this type of user operator in the reality, thereby effectively develop high-end customer to increase the operation income according to group user.Obviously, the formulation of this type of rate preferential policy is at specific PoC group rather than personal user in the PoC group communication, but, all do not carry the PoC group identification for information about in the Diameter message of Ro and Rf interface in the existing PoC billing technology, therefore difficulty implements rate preferential policy targetedly at specific group in charge system.
Embodiment
Below in conjunction with the drawings; preferred implementation of the present invention is described; should be appreciated that; here the preferred implementation of Miao Shuing not is restrictive explanation; those skilled in the art can be according to principle of the present invention, the present invention is made various modifications, improvement and can not break away from the protection range that claim limits of enclosing.
Although following description to summary of the invention is primarily aimed at the situation that the PoC group communication charges,, basic skills and principle that the present invention proposes are used the group communication beyond the PoC service, all are suitable for as IMS conference applications etc.
According to the present invention, a kind of method that group communication in IP Multimedia System/Push-to-talk over Cellular (IMS/PoC) system is chargeed has been proposed, wherein, the PoC server links to each other with Online Charging System (OCS) by Ro interface and is used for the online in real time charging; The PoC server links to each other with charging data function (CDF) by Rf interface, provides gateway to charge information and generate charging data record (CDR) by CDF to CDF to send Charging Gateway Functionality (CGF) to and finally be transferred to bill system to be used for offline charging; About the group list data that the PoC group communication is required are stored and management by the XML document management server (XDMS) that links to each other with the PoC server; And described Ro, Rf interface all adopt Diameter to communicate; Described method comprises: the information that increases the paying attribute of relevant PoC group member in the group list data in PoC XDMS; And the Diameter of Rf interface or Ro interface expanded to increase in PoC group identification and this PoC group concentrate for information about by charged party.
1.PoC the expansion of XDMS group list data
According to the present invention, for the PoC group communication billing function of supporting to strengthen, increase the information of the paying attribute of relevant PoC group member in the group list data in PoCXDMS, include but not limited to be responsible for concentrating of the part or all of expense of this group communication of payment by charged party, by this information such as condition of concentrating ratio that PoC service expense of being produced in this PoC group communication for each member of this group by charged party paid and should the concentrated PoC service expense that is produced in this PoC group communication for each member of this group by charged party paying in this ratio.
Owing to have only the owner of PoC group to allow by Ut to bookkeepings such as the XML of PoC group document creation, modification, deletions, therefore pay this group communication expense to concentrate by charged party only may be the owner of this PoC group.The PoC service expense that other member in the PoC group except that the owner of this PoC group is produced in this PoC group communication partly or entirely can be responsible for payment by the owner of this PoC group.Each member of this PoC group enjoy by the owner of this PoC group for its part payment or all its PoC service expense that in this PoC group communication, produces may need to meet some requirements, typical condition includes but not limited to section effective time, free amount within a certain period of time etc.As certain company is that the 09:30 of Mon-Fri is to 18:00 the operating time, then the said firm PoC group promptly may be free in this operating time, on Monday, then pay by each member individual fully in Saturday and Sunday to the PoC service expense that in this PoC group communication, is produced of paying half At All Other Times for its member of Friday.Another example is the free amount in the certain hour in this group communication of stipulating that each member can enjoy, certain member is in case the expense of concentrating paying side to pay by this group in inherent at the appointed time this group communication surpasses its free amount, and the owner of this PoC group will no longer pay the PoC service expense that it is produced for it in this PoC group communication in this stipulated time.
According to OMA standard " PoC XDM Specification Candidate Version 1.0-17March 2005 ", be used for arranging the PoC group of PoC group communications such as PoC group and chat PoC group to be described in advance by the XML file of PoC XDMS based on " list-service " document template.On the basis of the XMLschema of given " list-service " document of this standard, as an exemplary nonrestrictive example, Fig. 5 has provided the XML schema based on " list-service " of the present invention document.About the detailed description of XML schema, can obtain relevant information by the network address " http://www.w3.org/XML/Schema " of W3C.
Fig. 5 is based on the example of " list-service " document XML schema of the present invention, wherein shows the XMLschema of described " list-service " document with the form of Fig. 5-I, 5-II.In the XML schema of " list-service " document shown in Figure 5, shade is depicted as the part that increases based on the present invention, and other is the given part of OMA standard.Wherein,<list-service〉root element can comprise<is-charged-party element, this element value is a Boolean type, the owner who is used to indicate this group whether be concentrate this group communication expense of payment by charged party.<list-service〉root element also can comprise<charging-rule〉element, be used to indicate the payment rule of PoC group member, each<charging-rule〉element can comprise<discount 〉,<expire-time 〉,<discount-condition〉etc. daughter element, daughter element<discount wherein〉value is the integer of 0-100, the percentage that the PoC service expense that is used for indicating the owner by this PoC group to produce at this PoC group communication for this PoC group member is paid, 100% expression is free to this PoC group member, is the PoC service expense that produces in this PoC group communication of this PoC group member of the not responsible payment of the owner of zero this this PoC group of expression and by this PoC group member individual payment;<expire-time〉be used to indicate the term of validity of this payment rule, at daughter element<expire-time〉this payment rule lost efficacy after represented time; Daughter element<discount-condition〉then provided each member of this PoC group and enjoyed in daughter element<discount given ratio pays the condition that its PoC service expense that produces need satisfy by the owner of this PoC group for it in this PoC group communication, promptly by<valid-time〉with<valid-day date of being suitable in time period of being suitable in given one day of daughter element and the week.
Although the payment rule of PoC group member is at all members in the group in the example shown in Figure 5, but the present invention also allows each member in the group is specified payment rule respectively, or total payment rule is specified distinctive payment rule or the like as default at some member.In addition, except the PoC service expense that each member of group is produced in this group communication is specified the payment rule, according to the present invention, corresponding payment rule is specified in each subservice or the subservice combination of the PoC service that also can be respectively each member of group be produced in this group communication.Although also may there be other payment rule allocation plan,, all possible implementation that comprises such scheme is all within method and principle proposed by the invention.
2. offline charging is to strengthening the support of PoC group communication billing function
According to the present invention, be the PoC group communication billing function of supporting to strengthen, situation to offline charging, in existing Diameter, increase and be used to be described as other AVP that identified by charged party that the indicated user of AVP " User-Name " bears part or all of expense, and the AVP of the ratio of the described reimbursement of expense that other are produced in this call record for this user by charged party, also writing down described other among the CDR that off-line accounting system produced is simultaneously identified and its reimbursement of expense ratio by charged party, like this, the backstage account system can utilize the information of these increases to being carried out the wholesale price settlement process by charged party accordingly.
As an exemplary nonrestrictive example, in the AVP of Diameter charging protocol structure, increasing a type that optionally allows to occur repeatedly is the AVP " Charged-Party-List " of " Grouped ", this AVP is that the AVP " Charged-Percentage " of " Unsigned32 " forms (wherein TBD represents that numerical value is undetermined) as follows by type for the AVP " Charged-Party-ID " of " UTF8String " and type further:
Charged-Party-List::=<AVP?Header:TBD>
{Charged-Party-ID}
{Charged-Percentage}
Wherein, AVP " Charged-Party-ID " correspond to the indicated user of AVP " User-Name " bear part or all of expense by the user ID of charged party, AVP " Charged-Percentage " has then provided the ratio of the corresponding reimbursement of expense that is produced in this call record for this user by charged party.
Utilize above-mentioned agreement and charge system function expansion, situation to the PoC offline charging, being used to of using in the Diameter message of the Rf interface of PoC server and CDF that the present invention proposes is described as the indicated PoC user of AVP " User-Name " and bears the charged party sign of part or all of PoC service expense and the AVP of reimbursement of expense ratio thereof, wherein, charged party comprise PoC user self that AVP " User-Name " is indicated and in the PoC at this PoC user place group, be responsible for concentrating the part or all of PoC service expense of this PoC group communication of payment by charged party, and the reimbursement of expense ratio that each is responsible for by charged party is obtained from the PoC group XML document that PoC XDMS is stored by the PoC server, and wherein PoC group XML document should be supported of the present invention to expanded definition for information about such as PoC group member paying attributes.
3. online charging is to strengthening the support of PoC group communication billing function
According to the present invention, be the PoC group communication billing function of supporting to strengthen, situation to online charging, in existing Diameter, increase and be used to be described as other AVP that identified by charged party that the indicated user of AVP " User-Name " bears part or all of expense, and the AVP of the ratio of the described reimbursement of expense that other are produced in this call record for this user by charged party.When a credit control request information has been specified a plurality of during by charged party and responsible reimbursement of expense ratio thereof, OCS will carry out real time billing to it according to each reimbursement of expense ratio of being responsible for by charged party, and arbitrary failure that all will be caused the authentication of service request credit by charged party account balance deficiency.
According to the draft TS32.272V1.0.0 (2005-02) of 3GPP and the Diameter credit control application protocol draft (referring to http://www.ietf.org/internet-drafts/draft-ietf-aaa-diameter-cc-06.txt) of IETF, the AVP " Subscription-Id " of Ro interface Diameter message is " Multiple-grouped " type in the online charging, promptly allows to provide simultaneously multiple contracted user's sign.But, whether multiple contracted user's sign that current Diameter credit control application protocol draft and undeclared described AVP " Subscription-Id " are provided belongs to same user, a plurality of they should bear the proportionate relationship of expense by charged party if exist and prior art is not specified, and therefore in fact are difficult to specify simultaneously by described AVP " Subscription-Id " under prior art a plurality ofly carried out real time billing and credit control by charged party.
Therefore, a preferred version is that existing Diameter credit control application protocol AVP " Subscription-Id " is expanded, promptly comprise on the basis of AVP " Subscription-Id-Type " and AVP " Subscription-Id-Data " at AVP " Subscription-Id ", in this AVP, increase to describe this AVP specified be the AVP of the ratio of the indicated reimbursement of expense of user in this call record of AVP " User-Name " by charged party, and allow to indicate a plurality of different by charged party with a plurality of AVP " Subscription-Id ".As an exemplary nonrestrictive example, described AVP " Subscription-Id " definition expansion following (wherein TBD represents that numerical value is undetermined):
Subscription-ID::=<AVP?Header:TBD>
{Subscription-Id-Type}
{Subscription-Id-Data}
[Charged-Percentage]
Wherein, type be " Unsigned32's " " Charged-Percentage " be the AVP of the present invention expansion, be used to describe the specified ratio of in this call record, being assumed charge of AVP " Subscription-Id-Data " for the indicated user of AVP " User-Name " by charged party.
Utilize above-mentioned agreement and charge system function expansion,, in the Diameter message of the Ro interface of PoC server and OCS, use above-mentioned expanded definition AVP " Subscription-Id " to the situation of PoC online charging.For this reason, can utilize AVP " Subscription-Id " to specify two simultaneously by charged party and the PoC service expense ratio born separately, wherein, one is the indicated PoC user of AVP " User-Name " by charged party, another by charged party be in the PoC group at the indicated PoC user place of AVP " User-Name ", be responsible for to concentrate the part or all of PoC service expense of this PoC group communication of payment by charged party, this is obtained from the PoC group XML document that PoC XDMS is stored by the PoC server with its reimbursement of expense ratio of being responsible for by charged party, and wherein PoC group XML document should be supported of the present invention to expanded definition for information about such as PoC group member paying attributes.
4. control at the rate of particular demographic
As previously mentioned, group communications such as PoC service are used, all do not carried group identification for information about in the Diameter message of Ro and Rf interface in the existing billing technology, therefore difficulty implements tariff policy targetedly at specific group in charge system.Therefore according to the present invention, group communications such as PoC service are used, can in existing Diameter, increase the AVP (indicated group identification also will be recorded in CDR to this AVP of offline charging) of the group that is used for identifying the indicated user place of AVP " User-Name ", implement tariff policy targetedly according to group identification at specific group thereby be convenient to charge system.
Situation to the PoC service charging, preferred nonrestrictive example is that " PoC-Information " part in Fig. 3 and Diameter message shown in Figure 4 increases " PoC-Group-ID " of an optional type for " Unsigned32 ", be used to identify the PoC group at the indicated PoC user place of AVP " User-Name ", it has comprised the URI of this PoC group, i.e. the public service identity (PublicService Identity) of this PoC group in the IMS system.Utilize the public service identity of the PoC group that this AVP provides, charge system can implement tariff policy targetedly at this PoC group.
5. based on PoC group communication charging method of the present invention
Owing to be responsible for concentrating of the part or all of expense of this PoC group communication of payment in certain PoC group by charged party (i.e. the owner of this PoC group), with certain enjoy by this concentrate by charged party for its part payment or all this PoC group member of its PoC service expense in this PoC group may adopt different charging ways respectively, therefore following combined situation at the charging way that may adopt, utilize the expansion of the corresponding interface agreement in the above-mentioned PoC charge system structure, the PoC group communication charging method of enhancing proposed by the invention is further described.
Adopt the offline charging mode and the situation of PoC group member employing online charging mode to concentrating by charged party (being the owner of PoC group), according to the present invention, utilize the expansion of the corresponding interface agreement in the above-mentioned PoC charge system structure, the PoC server will transmit the PoC service call record data of this PoC group member the while to Ro interface and Rf interface, wherein, be sent to OCS and CDF this PoC group member PoC service call record data reflections be identical PoC service call situation parameter, but be sent in the Diameter message of OCS representative and had only one by the AVP of charged party " Subscription-Id ", that this AVP indicates is exactly this indicated PoC user of AVP " User-Name " by charged party, and the reimbursement of expense ratio in this call record that the AVP among this AVP " Charged-Percentage " should indicate this PoC user to bear.Should comprise two AVP " Charged-Party-List " and be sent in the Diameter message of CDF, wherein the indication of the AVP " Charged-Party-ID " in is responsible for concentrating concentrating by charged party (being the owner of this PoC group) of the part or all of PoC service expense of this PoC group communication of payment in the PoC group at the indicated PoC user place of AVP " User-Name ", and the AVP in this " Charged-Percentage " then is this concentrated payment ratio to this PoC user expense in this call record of being born by charged party; AVP in another " Charged-Party-ID " promptly indicates this indicated PoC user of AVP " User-Name ", but the value of the AVP " Charged-Percentage " in this item is changed to zero.When the backstage bill system carries out the processing of ticket wholesale price, if comprise among certain user's of discovery the CDR that it is zero ticket that explicitly is indicated this user's reimbursement of expense ratio, will not collect the expense that this CDR causes to this user.
Adopt the online charging mode and the situation of PoC group member employing offline charging mode for concentrating by charged party (being the owner of PoC group), according to the present invention, utilize the expansion of the corresponding interface agreement in the above-mentioned PoC charge system structure, the PoC server will transmit the PoC service call record data of this PoC group member the while to Ro interface and Rf interface, wherein, be sent to OCS and CDF this PoC group member PoC service call record data reflections be identical PoC service call situation parameter, but be sent in the Diameter message of OCS representative and had only one by the AVP of charged party " Subscription-Id ", what this AVP indicated is exactly to be responsible for concentrating the concentrated by charged party (being the owner of this PoC group) of the part or all of PoC service expense of this PoC group communication of payment in the PoC group at the indicated PoC user place of AVP " User-Name " by charged party, and the AVP among this AVP " Charged-Percentage " should indicate this to concentrate by the reimbursement of expense ratio of charged party in this call record.On the other hand, the Diameter message that is sent to CDF only need comprise an AVP " Charged-Party-List ", that the AVP among this AVP " Charged-Party-ID " indicates is exactly this indicated PoC user of AVP " User-Name " by charged party, and the reimbursement of expense ratio in this call record that the AVP among this AVP " Charged-Percentage " should indicate this PoC user to bear.When the backstage bill system carries out the processing of ticket wholesale price, provided the ticket of this customer charge payment ratio if comprise explicitly among certain user's of discovery the CDR, will collect the telephone expenses of corresponding proportion in this ratio to this user.
Adopt identical charging way to comprise the situation of online charging or offline charging mode to concentrating by charged party (being the owner of PoC group) and PoC group member, the PoC server will only transmit the PoC service call record data of this PoC group member to one of Ro interface or Rf interface, can realize then utilized aforementioned expansion to the corresponding interface agreement in the PoC charge system structure by the control of charged party and reimbursement of expense ratio thereof.
Also have a kind of comparatively special circumstances in addition, be that any reimbursement of expense ratio value by charged party only is 0% or 100%, promptly or by the PoC group member oneself bear its PoC service expense in this PoC group, the PoC group member is free fully in this PoC group communication, and the PoC service expense of all these PoC groups is by being responsible for concentrating concentrating of the part or all of PoC service expense of this PoC group communication of payment to be paid by charged party (being the owner of this PoC group) in this PoC group.This in particular cases the PoC server whenever will only transmit the PoC service call record data of this PoC group member to one of Ro interface or Rf interface, if being paid by PoC group member oneself is the implementation of corresponding prior art, if it is free to the PoC group member by concentrated paying of this PoC group by charged party, the situation that is adopted the online charging mode by charged party of concentrating to this PoC group, utilize existing Diameter Credit Control and need not to adopt aforementioned expansion to realize, promptly indicate concentrating of this PoC group by charged party by AVP " Subscription-Id " to AVP " Subscription-Id "; To concentrating of this PoC group by the situation of charged party employing in the offline charging mode, adopted the offline charging mode by charged party and the PoC group member adopts the situation of online charging mode similar with noted earlier concentrate, in being sent to the Diameter charging message of CDF, should comprise two AVP " Charged-Party-List ", wherein the AVP " Charged-Party-ID " in indicates this PoC group to concentrate by charged party and corresponding AVP " Charged-Percentage " value is 100%, and the AVP in another " Charged-Party-ID " promptly indicates this indicated PoC user of AVP " User-Name " and corresponding AVP " Charged-Percentage " value is zero.
Fig. 6 shows the realization flow based on the PoC group communication charging method of enhancing of the present invention, at first, at step S5, when the PoC server receives the initial session request of being transmitted by S-CSCF, and according to the PoC group identification that is comprised in this initial session request to this PoC group of description that PoC XDMS inquiry comprises the paying attribute for information about; Then, at step S10, this PoC group that the PoC server is provided according to PoC XDMS carry out PoC cluster conversation control and treatment by prior art for information about the time, paying attribute information according to this PoC group is made judgement to concentrating in the PoC group by the charging way combined situation of charged party and corresponding PoC group member, and is responsible for producing the Call Data Record of each required each subservice of PoC of PoC service charging.At last, at step S15, the PoC server is at concentrating in the PoC group by the charging way combined situation of charged party and corresponding PoC group member, according to the PoC group communication charging method of foregoing description application based on enhancing of the present invention, wherein, the PoC server can also add the PoC group identification in being sent to the Diameter message of charge system, thereby allows charge system to implement tariff policy targetedly at different PoC group.
Below in conjunction with the drawings the charging method to group communication in the IMS/PoC system of the present invention is set forth, but the present invention is not limited to this.One skilled in the art will appreciate that according to the principle of the invention, can make various modifications, improvement, and do not break away from the enclose scope of claim of the present invention the present invention.