WO2008080347A1

WO2008080347A1 - Session charging method, system and device

Info

Publication number: WO2008080347A1
Application number: PCT/CN2007/071357
Authority: WO
Inventors: Dong Zhao; Liming Zhang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-12-28
Filing date: 2007-12-27
Publication date: 2008-07-10
Also published as: CN101212725A; CN101212725B

Abstract

A session charging method, system and device. When a server receiving a session initiating request from a terminal, the server sends a charging request including a session initiation type of the terminal to a charging function device. The charging function device performs a corresponding charging strategy based on the received session initiation type carried in the charging request. The terminal can carry the session initiation type in the session initiation request, so that the session initiation type carried in the charging request sent by the server can be obtained from the session initiation request directly, and the server can also judge the type of the session initiation request of the terminal based on that whether the initiation needing parameter is contained in the session initiation request of the terminal.

Description

Manual session charging method, system and device

Technical field

[1] The present invention relates to the field of communications, and in particular, to a session charging method, system, and device.

Background technique

[2] PoC (Push to Talk over

Cellular), also known as wireless push-to-talk, refers to direct point-to-point and point-to-multipoint voice communication services introduced in cellular networks. It enables users to enjoy the popular two-way wireless intercom service using mobile phones and thereby promote mobile services. PoC services can increase the network utilization of mobile operators and significantly increase the throughput of data services, thus creating new market opportunities for mobile operators and service providers.

[3] The following is a brief introduction to the principle of PoC: Users can start a call with a single press. With the 'always on' connection, users can initiate individual and group calls by simply pressing a button on the phone. The call connection is almost instantly connected, and the recipient does not need to answer it. Users of the voice push-to-talk service are usually dealing with other things when they have an incoming call. They can listen to group calls while they continue to work. A user can be connected by name, and he can occasionally give some comments to the group. Half-duplex calls are best suited for this use case.

[4] In addition, users can also form talk groups on an 'ad hoc basis' without having to connect to their respective service providers, which facilitates spontaneous and flexible group calls. This simple, direct communication meets the diverse needs of business users and individual users – from managed team management to spontaneous sharing of experiences and fun. Voice push-to-talk is a truly differentiated voice service because it is not a replacement for any existing cellular service. It gives operators the opportunity to develop their own new voice services without having to change traditional voice services.

[5] In general, PoC has a set of voices (Voice over

IP, abbreviated ΎοΙΡ') Communication services and instant messaging style features, such as online status prompts and messages. Users can get voice services such as one-to-one conversations, special groupings, group conversations, and chat groups. The system structure is shown in Figure 1.

[6] In PoC, the relationship between communication entities is shown in Figure 2: Control PoC function (Controlling PoC) Function, abbreviated as 'CPF' is the communication core, which performs centralized control, including session control (establishment/cancellation of sessions, signaling and media negotiation, processing of requests, distribution of media streams, etc.), group policy enforcement (including collection and Control service quality) and user interface adaptation. One terminal is added to each PoC function (Participate PoC)

Function, referred to as 'PPF', each PPF session operation sends a request to the CPF, and the CPF coordinates the control session process (such as media distribution, data transfer, permission and role transfer, QoE authentication, etc.). The communication between the terminals joining the session is to request and receive CPF commands from the PPF through the PPF. The CPF distributes the media and data to the PPF according to the policy. Afterwards, each PPF forwards the media to the corresponding connected terminal to complete the point-to-point or between the terminals. Point-to-multipoint communication. CPF and PPF are functional modules. They can exist on one PoC server or on different PoC servers to perform different functions.

[7] At present, there are two ways to establish a PoC session: On-demanded and pre-established (·

Pre-established).

[8] The on-demanded type of session establishment process is shown in Figure 3. After the terminal registers with the PoC server, the initialization negotiation process is not performed immediately, but the service is initiated after the terminal initiates/receives the PoC session request. Quality (QoS), media, etc. Session initialization process necessary until the negotiation is completed, the terminal can initiate/accept PoC session request or media content, so that the terminal has a long waiting period from registration to the start of the session.

[9] The pre-established type of session establishment process is as shown in Figure 4. After the terminal registers with the PoC server, it automatically starts the work required for session initialization such as quality of service and media negotiation. After the process is completed, the terminal can be arbitrarily configured. Initiating/accepting a PoC session request without performing similar negotiation (including renegotiation of the lower layer bearer) process, which can save the response time of the terminal to initiate/accept the request service, and avoid the embarrassing operations such as media negotiation thereafter, such as After initiating/receiving media, there is no need to implement the IP Multimedia Core Network Subsystem (IP Multimedia Sub) as in the On-demanded type of session.

Quality of Service (QoS) for System, referred to as 'IMS'

Authentication and its underlying series of negotiation authorization processes have achieved the goal of improving the response speed, so that the quality of service perceived by the terminal has been significantly improved.

[10] It is not difficult to find that for an On-demanded type session, only after the PoC request is initiated, a series of initialization tasks of the P oC session (the connection between the PoC terminal and the PoC server) need to be established, and Pre-establishe d type session, after the IMS registration is completed, the session initialization work is started.

(The difference is shown in the shaded parts in Figures 3 and 4.)

Therefore, for a terminal that establishes a Pre-established type session, after it needs to initiate a PoC session request, the terminal can quickly start a PoC call/media call (talk/) because a series of negotiation and processing of the PoC session initialization has been completed in advance. Media

Burst) reduces the wait/response time, while the terminal of the On-demanded type session has a relatively long wait time, so the response speed is lower.

[11] For the above process, the process steps are the same whether the terminal initiates a PoC request or accepts a request.

In addition, PoC terminals on both sides of the session can use different session initialization methods, that is, one party establishes an On-d emanded type session, and the other party can use a Pre-established type session.

Disclosure of invention

technical problem

[12] The embodiment of the invention provides a session charging method, system and device, so that the calculation of the call charge can realize the difference of the service quality.

Technical solution

[13] An embodiment of the present invention provides a session charging method, including the following steps:

[14] After receiving the session initialization request of the terminal, the server sends a charging request including the session initialization type of the terminal to the charging function device;

[15] The charging function device performs the corresponding charging policy according to the session initialization type carried in the charging request.

[16] An embodiment of the present invention further provides a session charging system, including a server and a charging function device, where the server includes: a receiving module, configured to receive a session initialization request of the terminal;

[17] an obtaining module, configured to acquire a session initialization type of the terminal;

[18] a requesting module, configured to send a charging request to the charging function device, where the charging request includes a session initialization type obtained by the obtaining module;

[19] The charging function device includes: an execution module, configured to execute a corresponding charging policy according to a session initialization type carried in the charging request.

[20] An embodiment of the present invention further provides a server, including:

[21] a receiving module, configured to receive a session initialization request of the terminal; [22] an obtaining module, configured to acquire a session initialization type of the terminal;

[23] The requesting module is configured to send a charging request to the charging function device, where the charging request includes a session initialization type obtained by the obtaining module.

[24] An embodiment of the present invention further provides a charging function device, including:

[25] The execution module is configured to execute a corresponding charging policy according to the session initialization type carried in the received charging request.

Beneficial effect

[26] In the embodiment of the present invention, after receiving the session initialization request of the terminal, the server sends a charging request including the session initialization type of the terminal to the charging function device. The charging function device performs a corresponding charging policy according to the session initialization type carried in the received charging request. After the PoC terminal establishes a PoC session with the PoC server, the PoC server can establish different types of session connections (initialization) due to different session types. Different types of session connections have different quality of service. For example, a Pre-est lished session type terminal can start a PoC call/media call very quickly, and the wait/response time is shorter; while the On-demanded session type terminal has a relatively long wait time, and the response speed is also Lower. Therefore, the charging function device performs a corresponding charging policy according to different types of session initialization, so that the calculation of the call charge can reflect the difference in service quality.

[27] The terminal may carry the session initialization type in the session initialization request, so that the session initialization type carried in the charging request sent by the server is directly obtained from the session initialization request; the server may also initialize according to the session initialization request of the terminal. The required parameters, determining whether the session initialization type of the terminal is a Pre-established session type or an On-demanded session type, provides a specific embodiment for implementing the solution of the present invention.

[28] By carrying the session initialization type in the charging request in the charging request extension field, the inventive scheme can be better compatible with the prior art.

[29] The billing request also contains one or the following combination of information: type valid length, inter-turn interval required for type update, time to complete session initialization, number of initializations for a certain type of completion session. The charging function device performs a corresponding charging policy according to the session initialization type carried in the received charging request and the number of times the session initialization is performed and/or the time. In addition, the charging function device may also perform a corresponding charging policy in combination with the current session initialization type and other session control information. Making the calculation of the call charge Further reflects the difference in service quality.

DRAWINGS

[30] FIG. 1 is a structural diagram of a PoC service system according to the prior art;

2 is a schematic diagram showing the mutual relationship of PoC communication entities according to the prior art;

[32] FIG. 3 is a flow chart of establishing an On-demanded type session according to the prior art;

[33] FIG. 4 is a flowchart of a pre-established type session establishment according to the prior art;

FIG. 5 is a schematic flowchart of a session charging method according to an embodiment of the present invention; FIG.

6 is a flowchart of a session charging method according to a first embodiment of the present invention;

7 is a flowchart of a Pre-established type session charging method according to a second embodiment of the present invention; [37] FIG. 8 is an On-demanded type of session charging according to a third embodiment of the present invention. Method flow chart.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings.

[39] For different types of session initialization processes, PoC terminals and PoC servers implement different quality of service in different ways. For this different types of services and user experience, a charging method is needed for them. The distinction is made and is reflected in the user fee control to reflect the operator's differentiated service. However, in the current prior art, a charging method capable of reflecting such service quality difference has not been proposed.

[40] Since the service variability is reflected in the session initialization period, once the session establishment is completed, the session nature will not change any more, so embodiments of the present invention use an event-based charging model and for events during session initialization. Billing. That is, after receiving the session initialization request of the terminal, the server sends a charging request including the session initialization type of the terminal to the charging function device, and the charging function device performs corresponding according to the session initialization type carried in the charging request. Billing strategy.

[41] As shown in FIG. 5, it is a schematic flowchart of a session charging method according to an embodiment of the present invention. In step 510, when the PoC terminal completes the IMS registration, it is required to connect to the PoC server (such as PPF or / and CPF in the figure).

[42] In step 520, after receiving the session connection request initiated by the terminal, the PoC server determines whether the terminal can initiate the session initialization request, and if so, the PoC server performs the PoC session initialization of the type. A process, such as a Pre-established type or an On-demanded type of PoC session initialization process.

Next, in step 530, the PoC server confirms that the PoC terminal can initiate a certain type of session initialization request and initiates a corresponding charging request to the charging function device (Charging

Request), the request contains information about the session initialization type.

Next, in step 540, after receiving the charging request with the session initialization type related information, the charging function device executes the corresponding charging policy according to the session initialization type related information.

Next, in step 550, the charging function device returns a charging response to the PoC server (Charging

Response), returning the execution of the charging request submitted to the PoC server. After completing this series of operations, the session continues, as in step 560.

The following is a detailed description of the first embodiment of the present invention. The present embodiment relates to a session charging method. In this embodiment, the PoC terminal carries the session initialization type in the session initialization request, and the PoC server directly uses the session from the PoC terminal. The session initialization type is obtained in the initialization request. The specific process is shown in Figure 6.

[47] In step 610, the PoC terminal sends a session initialization request to the PoC server, and carries the information about the session initialization type in the request. For example, if the PoC terminal initiates a Pre-establi shed type session initialization request to the PoC server, the PoC terminal immediately sends a session initialization request to the PoC server after completing the IMS registration, regardless of whether the session is currently started or not. The session initialization type carried in the request is of the Pre-established type. If the PoC terminal initiates a session initialization request of the On-deman ded type to the PoC server, after the IMS registration is completed, the user of the terminal presses a button to indicate that the session request is initiated/accepted, and the PoC terminal re-initiates the IMS registration. A session initialization request is sent to the PoC server, and the session initialization type carried in the request is of the On-demanded type.

[48] Next, proceeding to step 620, the PoC server initiates a charging request to the charging function device, and carries the session initialization type in the charging request. Specifically, after receiving the session initialization request of the PoC terminal, the PoC server determines whether the terminal has the right to initiate the session initialization request. If the terminal can initiate the session initialization request, the PoC server according to the received session initialization request. In the session initialization type, a charging request is initiated to the charging function device.

For example, a field (such as PoC session initiation type) is extended in the existing charging request to indicate the session initialization type identification number, and the value can be divided into: "Γ indicates that the type is Pre-established type; "2 "Indicating that the type is On-demanded, the meaning of each field in the accounting request As shown in Table 1.

[50]

Field Category (He Middle Class) Description (Description)

PoC Server Role OM (operator must) Identifies the PoC server as participating or controlling PoC server.

PoC User Role Oc (Operator conditions optional) Identifies the PoC user's role detailed information which should be a list of roles information group. See further details in OMA-AD-POC document [203].

PoC Session Type OM (manufacturer must) Type of the PoC session as defined in appendix C.5.1 in OMA-CP-POC [204].

PoC session initiation type 0 _M or Oc (optional operator / Type of the PoC session optional) initiation, it can be

Pre-established or

On-demanded

Indicates the number of invited parties of the PoC session when included in the initial charging request message. When included in interim 1 update charging messages, it indicates the number of parties currently who have accepted the Number of Participants OM Session (ie sent the 200

OK) at the time the interim 1 update charging messages are sent.

List Of Participants Oc (operator conditions are optional) Holds the addresses (Public

User ID: SIP URL, E.164, etc.) of the parties whom are involved into the PoC session.

List Of Talk Oc (Applicable to offline Burst-Exchange charging only - a list of changes in charging conditions for the PoC session, each change is time stamped. Charging conditions are used to categorize charging, such as per tariff A set of charging data (number of talk bursts, talk burst bearer volume, sum of talk bursts time) for sent and received talk.

PoC Controlling Address Oc (operator condition optional) Identifies the PoC server performing the controlling function. This is only included when PoC Server Role indicates

'participating'. This information may be obtained from the 'Contact' header of SIP message received from the controlling PoC function.

PoC Group Name Oc (operator condition optional) Identifies a pre-arranged group. Included if the session is a pre-arranged group session. This information may be obtained from the

'P-Asserted- Identity' header of the SIP message received from the controlling PoC function, or from the

'Request- URT header from the PoC user.

PoC Session Id Oc (operator condition optional) Uniquely identification an

End-to-end PoC session.

Note that the PoC

Session-Id may not be available in the initial charging interactions for the

PoC session.

[51] Table 1 [52] It can be seen that the session initialization type is carried in the charging request in the charging request extension field, so that the embodiment can be better compatible with the prior art.

[53] In addition, it should be noted that the billing request may also carry other information related to the session, for example, the type is valid (such as Expire), and the interval required for the type update (such as Validate)

Interval), information about the completion of session initialization (such as TimeStamp, TimeZone), and information about the number of initializations for a certain type of session (such as Max number/number)

Ofinitiation) and so on. If the accounting request can also carry other information related to the session, then the extended 'PoC Session initiation

Type' can be a grouped type structure in which to carry the session initialization type and other related information.

[54] Next, proceeding to step 630, the charging function device executes a corresponding charging policy according to the related information in the charging request. Specifically, the PoC terminal can use different types of session initialization modes to achieve different quality PoC services. Therefore, the charging function device needs to determine which type of charging should be performed according to the session initialization type information in the charging request. The strategy corresponds to this, so that the calculation of the call charge can reflect the difference in service quality. That is to say, different session initialization types are corresponding to different rates, and the P oC terminal performs initialization, and the initialization type can be used as one of the charging criteria (different types of sessions, corresponding to different rates), and is recorded in the charging data record.

[55] In addition, the number of times and/or the number of sessions initiated by a certain type of session can also be recorded as one of the charging criteria in the accounting data record. For example, the number of sessions of a certain type of session will be executed as the number of billing (Charging

One of the amount; for the Pre-established type initialized session, from the completion of the PoC session initialization to the subsequent establishment of the PoC session and the media connection (talk/mediaburst), a session with the talk/mediaburst section can be executed. Different, it is also different from the rate before the on-demanded session request is initiated.

[56] For the data recorded in the billing data record above, it is also possible to determine what kind of charging strategy to execute in BILLING. It can be seen that the charging function device performs the corresponding charging policy according to the session initialization type carried in the received charging request and the number of times the session initialization is performed and/or the daytime, so that the calculation of the call charge can be further embodied. Differences in service quality. [57] In addition, it is worth mentioning that the charging function device can also perform the corresponding charging policy in combination with the current session initialization type and other session control information. For example, to complete the session initialization, but the successor has not executed any times talk/media

A burst session may not perform per-time/segment/type billing, but only charge it once (that is, only record the initialization event once, and then merge it into the first record); Or, recording certain features in the process of initializing the session of the P oC terminal, such as continuously initiating an initialization request, and recording into the charging data record, and the charging system or the back-office accounting system comprehensively judges the specific situation of the problem, and determines whether Its billing.

The second embodiment of the present invention relates to a session charging method, which is substantially the same as the first embodiment, except that in the first embodiment, the PoC terminal carries the session initialization type in the session initialization request. The PoC server obtains the session initialization type directly from the session initialization request of the PoC terminal. In this embodiment, the PoC server determines whether the session initialization type is an On-demanded type or a Pre-established type according to whether the PoC terminal's session initialization request includes an initialization required parameter. That is to say, after the PoC terminal initiates the session initialization request, the session initialization type related information may not be carried, and the PoC server discriminates the difference between the session initialization request and other PoC session requests, and determines the type of the session initialization.

As shown in FIG. 7, it is a flowchart of a session charging method according to a second embodiment of the present invention. Specifically, a session charging process of a pre-established type of session initialization type is shown. In step 701, when the PoC terminal completes the IMS registration, it requests to connect to the PoC server (such as PPF or / and CPF in the figure).

[60] Next, in step 702a, the PoC terminal sends an INVITE request message to the PoC server, and the INVITE request message is used after the PoC terminal is connected to the PoC server, and performs parameter negotiation processing such as Media/QoS (media/quality of service), which includes The information is different from the INVITE message used for other normal session requests.

Therefore, in step 702b, the INVITE request message received by the PoC server does not include information such as the calling party address, but includes SDP (Session Description Protocol), QoS (Quality of Service), and RTP (Real Transfer Protocol). A series of parameters such as the port number are initialized. The PoC server can determine that the initialization operation performed by the PoC terminal after connecting to the PoC server belongs to the Pre-established type by distinguishing the difference between the INVITE requests.

[62] Next, the PoC server returns a 200 OK response message to the PoC terminal, and sends the packet to the charging function device. A charging request including a session initialization type, such as step 702c and step 703.

[63] Since the session initialization type is a Pre-established type session, the PoC terminal initiates a session initialization request to the PoC server after completing the IMS registration, so when the user of the PoC terminal presses the button to start Talk/media

Burst吋, the PoC terminal sends a REFER request. In contrast, in the On-demanded type of session, when a button is pressed, a session initialization request is initiated. Therefore, when the user of the PoC terminal presses the button to start a PoC call/media call (Talk/media)

After the burst, the PoC terminal initiates a call request/establishment of a media stream to the PoC server, and the charging function device performs a corresponding charging policy according to the session initialization type in the previously received charging request, to reflect the quality of service. The difference is as in steps 704 and 705.

[64] Next, in step 706, the charging function device returns a charging response to the PoC server.

[65] Next, in step 707, the PoC server sends a call confirmation message to the PoC terminal, and then the session continues. In steps 708 and 709, the PoC terminal sends a media stream to the PoC server, and the PoC server sends the message to the other end of the session. Media stream.

[66] As shown in FIG. 8, it is a flowchart of a session charging method according to a third embodiment of the present invention. Specifically, a session charging procedure for a session initialization type of On-demanded type is shown. In step 801

After the PoC terminal completes the IMS registration, it requests to connect to the PoC server (such as PPF or / and CPF in the figure).

[67] Next, when the user of the PoC terminal presses the button to start Talk/media

After the burst, the PoC terminal initiates a session initialization (INVITE) request to the PoC server, as in step 802a. In a Pre-established type session, the PoC server receives the session initialization request of the PoC terminal before the user presses the button. In the On-demanded type session, only the user at the terminal presses the button, indicating Initiate/Accept Talk/Media

After Burst, the PoC server will receive the INVITE request, and the INVITE request is a normal PoC SIP INVITE.

[68] Next, in steps 802b and 802c, the PoC terminal needs to complete a series of negotiations with the PoC server such as Media/QoS (media/quality of service) before completing the session initialization process.

[69] Since the PoC terminal sends a normal session request to the PoC server, the PoC server It can be determined that the session initialization type initiated by the PoC terminal is of the On-demanded type. Therefore, in steps 803 to 805, the PoC server sends a charging request including the session initialization type to the On-deman ded type to the charging function device. The charging function device performs a corresponding charging policy according to the session initialization type in the received charging request, and feeds back the charging response to the PoC server.

[70] The charging information in the charging request may further include: a pre-established type session initializing period, a subsequent normal PoC session initiated by the REFER, or the charging status of the pre-established session type. The difference between the two (the pre-established type session initialization period and the subsequent normal PoC session).

[71] The process from step 806 to step 808 is the same as the process from step 707 to step 709, and will not be described here.

[72] It is not difficult to find that for a session with a session initialization type of Pre-established, the PoC terminal initiates

Pre-established session initialization request and processing flow. After the user of the PoC terminal presses the button to prepare for the call, the terminal can start talk/media very quickly.

Burst, short wait/response, resulting in better quality of service. The On-demanded session type terminal has a relatively long waiting time, and the response speed is lower, so the user's business experience is worse. Therefore, in this embodiment, since the charging function device executes the corresponding charging policy according to different types of session initialization, the calculation of the call charge can reflect the difference in quality of service.

In addition, the present invention may further have other embodiments. For example, the fourth embodiment of the present invention relates to a session charging method, which is substantially the same as the first embodiment, except that in the first embodiment, _{The PoC} terminal carries the session initialization type in the session initialization request, and the PoC server directly obtains the session initialization type from the session initialization request of the PoC terminal. In the fourth embodiment, the default type of the session initialization type is preset. If the PoC terminal does not specify the session initialization type of the terminal, the PoC server and the charging function device use the default type as the session initialization type of the terminal. .

[74] For example, the On-demanded type is set to the default type. If there is no session initialization type information, the PoC server and the charging function device regard the session type as an On-demanded type, otherwise it is regarded as Pre-established. Types of. The default type setting can be implemented in a pre-configured mode such as XDMS (XML Data Management System). After the execution, the PoC server and the accounting function device obtain pre-configured values, for example, obtain the default type information or specified type information of the terminal in the X DMS. . The PoC terminal can be connected to the PoC server. 吋, the specified type can also be set in the pre-configuration by the terminal in advance.

A fifth embodiment of the present invention relates to a session charging system, including a PoC server and a charging function device.

[76] The PoC server includes: a receiving module, configured to receive a session initialization request of the PoC terminal; and an obtaining module, configured to obtain a session initialization type of the PoC terminal (eg, a Pre-established type or an On-de manded type); The requesting module is configured to send a charging request to the charging function device, where the charging request includes a session initialization type acquired by the acquiring module. The acquiring module directly obtains the session initialization type from the session initialization request of the PoC terminal; or, according to the session initialization request of the PoC terminal, whether the initialization required parameter is included, and determining the session initialization type (if the parameter required for initialization is included, Pre -established type, otherwise On-demanded type). The session initialization type can be carried by fields that are extended in the billing request, making this embodiment more compatible with the prior art.

[77] The charging function device includes: an execution module, configured to perform a corresponding charging policy according to the session initialization type carried in the charging request, so that the calculation of the call charge can reflect the difference in service quality

[78] It is worth mentioning that the billing request can also contain one of the following information or any combination thereof: type valid length, time interval required for type update, time to complete session initialization, completion of session type The number of initializations. The execution module in the charging function device executes the corresponding charging policy according to the session initialization type carried in the charging request and the number of times and/or the execution of the session initialization of the type. In addition, the execution module may perform a corresponding charging policy according to the session initialization type carried in the charging request and other session control information of the recorded PoC terminal. The calculation of the call charge further reflects the difference in service quality.

In summary, in each embodiment of the present invention, after receiving the session initialization request of the terminal, the server sends a charging request including the session initialization type of the terminal to the charging function device. The accounting function device performs the corresponding charging policy according to the session initialization type carried in the received charging request. Since the PoC terminal establishes a PoC session with the PoC server, the PoC server establishes a corresponding session connection (initialization) according to the type of the session. Different session connections have different quality of service. For example, a Pr e-established session type terminal can start talk/media very quickly.

Burst, wait/response is shorter; while On-demanded session type terminals have a relatively long wait period and a lower response speed. Therefore, the charging function device is based on the session initialization type. Differently, the implementation of the corresponding charging strategy can make the calculation of the call charge reflect the difference in service quality.

[80] The terminal may carry the session initialization type in the session initialization request, so that the session initialization type carried in the charging request sent by the server is directly obtained from the session initialization request; the server may also initialize according to the session initialization request of the terminal. The required parameters, determining whether the session initialization type of the terminal is a Pre-established session type or an On-demanded session type, provides a specific embodiment for implementing the solution of the present invention.

[81] By carrying the session initialization type in the charging request in the charging request extension field, the inventive scheme can be better compatible with the prior art.

[82] The billing request also contains one of the following information or any combination thereof: type valid length, the inter-turn interval required for type update, the time to complete the session initialization, and the number of initializations of a type of completion session. The accounting function performs the corresponding charging policy according to the session initialization type carried in the received charging request and the number of times and/or the session initialization of the type. In addition, the charging function device may also perform a corresponding charging policy in combination with the current session initialization type and other session control information. For example, after the session initialization type is a Pre-established session type, the charging information in the charging request further includes : The pre-establishment type session initialization period, the subsequent normal PoC session initiated by REFER, or the inter-turn difference between the two (pre-established type session initialization period and subsequent ordinary PoC session), the execution module according to The charging information carried in the charging request performs a corresponding charging policy, so that the execution module performs different charging policies (such as different rates) for the session initialization process and the normal session process, so that the calculation of the call charges further reflects the service. The difference in quality.

While the invention has been illustrated and described with reference to the preferred embodiments of the present invention, The spirit and scope of the invention are not departed.

Claims

Claim

[1] 1. A session charging method, characterized in that it comprises the following steps:

After receiving the session initialization request of the terminal, the server sends a charging request including the session initialization type of the terminal to the charging function device;

The charging function device performs a corresponding charging policy according to the session initialization type carried in the charging request.

[2] The session charging method according to claim 1, wherein the terminal carries the session initialization type in a session initialization request;

The server directly obtains the session initialization type from a session initialization request of the terminal

[3] The session charging method according to claim 1, wherein the server determines the session initialization type according to whether the session initialization request of the terminal includes a parameter required for initialization.

[4] The session charging method according to claim 1, wherein the charging request further comprises one of the following information or any combination thereof:

The type is valid, the interleave interval required for type update, the time to complete session initialization, and the number of initializations for a type of completion session.

[5] The session charging method according to claim 4, wherein the charging function device performs the session initialization type carried in the charging request and the number of times the session initialization is performed and/or Or, the corresponding billing strategy is executed.

[6] The session charging method according to claim 1, wherein the charging function device is configured according to the session initialization type carried in the charging request and other recorded session control information of the terminal. , execute the corresponding billing strategy.

[7] 7. The session charging method according to claim 1, wherein a default type of the session initialization type is set in advance;

If the terminal does not specify the session initialization type of the terminal, the server and the charging function device use the default type as the session initialization type of the terminal.

[8] The session charging method according to any one of claims 1 to 7, wherein the service is The server and the terminal are respectively a wireless push-to-talk server and a wireless push-to-talk terminal;

The session initialization type is a pre-established session type or an on-demand session type.

[9] The session charging method according to claim 8, wherein, in the session initialization type is a pre-established session type, the charging information in the charging request further includes a pre-established type session. The inter-turn difference between the normal PoC session initiated by the REFER, or the pre-established type session initialization period and the subsequent normal PoC session initiated by the REFER.

[10] The session charging method according to any one of claims 1 to 7, wherein the session initialization type is carried in the charging request by expanding a field in the charging request .

[11] 11. A session charging system, comprising a server and a charging function device, wherein the server comprises: a receiving module, configured to receive a session initialization request of the terminal; and an obtaining module, configured to acquire the terminal Session initialization type;

a requesting module, configured to send a charging request to the charging function device, where the charging request includes a session initialization type acquired by the acquiring module;

The charging function device includes: an executing module, configured to execute a corresponding charging policy according to a session initialization type carried in the charging request.

[12] The session charging system according to claim 11, wherein the obtaining module directly acquires the session initialization type from a session initialization request of the terminal; or Whether the parameter required for initialization is included in the session initialization request of the terminal, and the session initialization type is determined.

[13] The session charging system according to claim 11, wherein the charging request further comprises one of the following information or any combination thereof:

The type is valid, the inter-time interval required for the type update, the time to complete the session initialization, and the number of initializations of a certain type of completion session;

The execution module executes a corresponding charging policy according to the session initialization type carried in the charging request and the number of times the session initialization is performed and the I or the time.

[14] The session charging system according to claim 11, wherein the execution module is configured according to the session initialization type carried in the charging request and other recorded session control of the terminal. System information, implement the corresponding billing strategy.

[15] The session charging system according to any one of claims 11 to 14, wherein the server and the terminal are respectively a wireless push-to-talk server and a wireless push-to-talk terminal; The session initialization type is a pre-established session type or an on-demand session type.

[16] 16. The session charging system according to claim 15, wherein, in the session initialization type is a pre-established session type, the charging information in the charging request further includes a pre-established type session initialization. a time difference between the normal PoC session initiated by the REFER, or the normal PoC session initiated by the REFER, and the subsequent normal PoC session initiated by the REFER;

The execution module executes a corresponding charging policy according to the charging information carried in the charging request.

[17] 17. A server, comprising:

a receiving module, configured to receive a session initialization request of the terminal;

An obtaining module, configured to acquire a session initialization type of the terminal;

And a requesting module, configured to send a charging request to the charging function device, where the charging request includes a session initialization type acquired by the obtaining module.

[18] 18. A charging function device, comprising:

The execution module is configured to execute a corresponding charging policy according to the session initialization type carried in the received charging request.