KR101862745B1 - SYSTEM AND METHOD FOR QoS EXCEPTION PROCSEE, PCRF AND PCEF - Google Patents

Abstract

The present invention relates to a system and a method for QoS exception processing that can add a QoS exception parameter to a rule for processing a traffic request of a user side terminal and transmit the QoS exception parameter.
To this end, a system for QoS exception processing according to an embodiment of the present invention includes a policy and billing enforcement unit for requesting a PCC rule according to a traffic request when a traffic request is generated from a user side terminal in order to receive an arbitrary service, And a policy and billing rule setting unit for transmitting a response message including a PCC rule and a QoS exception parameter to the policy and billing enforcement unit according to the request of the rule, And provides an arbitrary service regardless of the QoS based on the value of the QoS exception parameter.

Description

SYSTEM AND METHOD FOR PROVIDING QoS EXCEPTION, AND POLICY AND BANKING ENHANCEMENT AND RULES SETTING APPARATUS

The present invention relates to a system and method for processing a specific service as a QoS exception, and more particularly, to a system and method capable of processing a QoS by including a QoS exception parameter in a PCC rule to be applied to a specific service, Policy and billing rule setting device, policy and billing enforcement device.

As is well known, with the rapid development of communication technology, a step of providing a high-speed data service capable of multimedia service such as moving picture as well as e-mail, still image as well as general voice service as well as mobile terminal has been reached.

So-called supporting both the voice service and the general packet service, the third generation: and the like (3 ^rd Generation 3G) mobile communication system UMTS (Universal Mobile Telecommunication System) of the CDMA 2000 system and the asynchronous mode in synchronous manner. The third generation mobile communication system provides a multimedia service to a portable terminal through interworking with a specific network.

Meanwhile, the mobile communication system sets a service quality policy and a billing rule for use of the service, and provides a service to terminals according to a set policy and a billing rule. For this purpose, the Policy and Charging Rules Function (hereinafter, referred to as 'PCRF') receives service information from an application function device ('AF') and receives policy and charging control rules Rule, hereinafter referred to as "PCC rule").

The PCRF then provides the generated PCC rules to the Policy and Charging Enforcement Function (PCEF). The PCEF then provides the QoS (Quality of Service) service according to the service flow to the terminal based on the PCC rule.

Korean Patent Application Publication No. 10-2010-0086105, published on Jul. 30, 2010, entitled " Method and system for changing PCC rules in a mobile communication system " A technique is disclosed in which a parameter can be decoded according to the addition of the parameter.

In the conventional technology as described above, only the function of providing the QoS service according to the service flow according to the PCC rule is provided to the terminal. Therefore, when there is a need to provide the service regardless of the QoS, there is no such method.

The present invention provides a system and method for QoS exception handling that can add a QoS exception parameter to a rule for processing a traffic request of a user-side terminal and transmit the QoS exception parameter.

According to the present invention, as service information is received from an application function device during a service request according to a traffic request, a rule and a QoS exception parameter are transmitted to the PCEF, and a QoS A system and method for exception handling is provided.

The present invention relates to a method and apparatus for requesting a rule to be applied to a service according to a service request of a user side terminal, receiving a rule and a QoS exception parameter in response thereto, receiving a policy for QoS exception handling, Provide an implementation device.

The present invention provides a policy and a billing rule setting device for QoS exception handling capable of transmitting a rule to be applied to a service and a QoS exception parameter as information on a service to be provided to a user terminal is received.

According to an aspect of the present invention, a system for QoS exception processing according to an embodiment of the present invention includes a policy for requesting a PCC rule according to a traffic request when a traffic request is generated from a user side terminal in order to receive an arbitrary service, And a policy and billing rule setting unit for sending a response message including the PCC rule and the QoS exception parameter to the policy and billing enforcement unit upon request of the PCC rule, The apparatus unit provides the arbitrary service on the basis of the PCC rule, and provides the arbitrary service regardless of the QoS based on the value of the QoS exception parameter.

The system for QoS exception processing according to an embodiment of the present invention further includes an application function device for generating and transmitting information on a service according to a service request from the user side terminal, And generates a message including the PCC rule and the QoS exception parameter based on the information provided from the application function device, and provides the message to the policy and billing trial device.

According to another aspect of the present invention, there is provided a policy and billing enforcement device for QoS exception processing according to an embodiment of the present invention includes a rule database in which an index-granted rule is set, A message receiver for transmitting a request message to the PCRF and receiving a response message indicating an index of a rule to be applied to the service and a QoS exception parameter in response to the request; And a QoS exception processor for providing the service to the user terminal based on the searched rule and providing the service to the user terminal regardless of the QoS based on the value of the QoS exception parameter.

According to another aspect of the present invention, there is provided an apparatus for setting a policy and a billing rule for QoS exception processing according to an exemplary embodiment of the present invention, A QoS exception parameter setting unit for setting a QoS exception parameter value according to the information of the service, and a transmission unit for generating a message including the generated rule and the QoS exception parameter value and transmitting the generated message to the PDN gateway .

According to another aspect of the present invention, there is provided a method for QoS exception handling according to an exemplary embodiment of the present invention includes: transmitting a message to a PCRF when a rule is required for a service requested by a user terminal; Receiving an index of a rule to be applied to the service and a QoS exception parameter in response to the response; searching a database storing a rule corresponding to an index of the rule received in the response in a database storing the rule; And providing the service to the user terminal based on the parameter.

In the method for QoS exception handling according to an exemplary embodiment of the present invention, the step of providing the service to the user side terminal may include providing the service to the user side terminal regardless of QoS when the value of the QoS exception parameter is "YES & .

According to another aspect of the present invention, there is provided a method for QoS exception handling according to an exemplary embodiment of the present invention includes generating a rule based on information about a service upon receipt of information about a service requested by a user- Setting a QoS exception parameter value according to the service information, and generating and transmitting a message including the generated rule and the QoS exception parameter value to the PDN gateway, And provides the service requested by the user terminal based on the parameter value and the rule.

According to the embodiment of the present invention, a QoS exception parameter is set and provided when providing a rule to be applied to a service, and a service irrespective of QoS is provided to a user side terminal based on a QoS exception parameter, There is an effect that can be.

1 is a network configuration diagram illustrating a system for processing QOS exception-subject traffic according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a process of providing a service according to a service flow to a user-side terminal regardless of QoS according to an embodiment of the present invention;
3 is a flowchart illustrating a process of providing a service-based service to a user-side terminal regardless of QoS according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Hereinafter, a system and method for processing a QoS exception service according to an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a network diagram illustrating a system for processing QOS exception-targeted traffic according to an embodiment of the present invention. The system includes a user-side terminal 100, a serving gateway 110, a policy and charging enforcement function A Policy and Charging Rules Function (PCRF) 140, an Application Function (PDS) gateway 130, an application function device 150, and the like, .

The user side terminal 100 communicates with network nodes or other terminals constituting the core network through a radio access network such as Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN) To receive various services. The user terminal 100 may be a mobile station (MS), a fixed or mobile subscriber unit, a pager, a cellular telephone, a digital assistant (PDA), a computer, or any other type of user Devices, but are not limited thereto.

In addition, the user side terminal 100 includes a transceiver for transmitting and receiving a radio signal to and from a processor, which is a signal generating and processing means, and a radio access network (RAN). Although not shown in the figure, the user-side terminal 100 includes a memory for storing user data and programs, a display unit for displaying various information or data of the terminal, a user interface such as a keypad or a touch screen, As shown in FIG.

The serving gateway 110 is a session control and user plane node for processing payload traffic according to a set session with the user terminal 100 and includes an eNodeB (not shown) Inter-LTE / 3GPP handover is interworked with the S1-U interface, PDP context is set with the PDN gateway 130, and PDU can be delivered using tunneling.

The PDN gateway 130 has a rule database 126 in which information on traffic-specific policies and information on policy and charging control rules (hereinafter, referred to as 'PCC rules') are stored. Rules contain unique index information.

Meanwhile, the PDN gateway 130 includes a message receiving unit 122 for receiving a message including the index information of the PCC rule and a QoS exception parameter, and an arbitrary service request of the user side terminal 100, And a QoS exception processing unit 124 for providing a service flow. Here, the message including the QoS exception parameter is shown in Table 1 below.

As shown in Table 1, the message includes an ID (index information) of a PCC rule, a service ID, a QoS parameter, a field indicating whether or not a QoS exception is made, and the like.

The PCEF 120 of the PDN gateway 130 sends a binding to the existing default / specific bearer that can receive control of the APN-AMBR or other QoS parameters, It is possible to provide the service to the user side terminal 100 regardless of the QoS.

The PCRF 140 receives service information from the application function apparatus 150 and generates index information on the PCC rules corresponding to the service information and provides the index information to the PCEF 120 in the PDN gateway 130. At this time, the PCRF 140 may transmit the QoS exception parameter to the PCEF 120 together with index information on the PCC rule. Here, the QoS exception parameter is information for enabling the PCEF to provide the service based on the PCC rule to the user-side terminal 100 in a service flow-related manner, regardless of the QoS or the QoS. That is, the PCRF 140 sets the QoS exception parameter to "YES" when the service information provided from the application function apparatus 150 is a QoS exception service, and sets the QoS exception parameter to "NO" if not.

In order to set the QoS exception parameter, the PCRF 140 receives the information about the service requested by the user-side terminal 100 from the application function unit 150 and generates a rule based on the information about the service, A QoS exception parameter setting unit 144 for setting a QoS exception parameter value according to the information of the service, a message for generating a message including the generated rule and the QoS exception parameter value, and transmitting the generated message to the PCEF 120 Section 146, as shown in FIG.

The rule generating unit 142 can generate the PCC rule as well as generate the index information on the PCC rule according to the rule request from the PCEF 120 of the PDN gateway 130. [

The QoS exception parameter setting unit 144 may set the QoS exception parameter value to "YES " when the service requested by the user-side terminal 100 needs to be performed regardless of the QoS.

The transmitter 146 may encode the generated PCC rules and QoS exception parameters and then transmit them to the PCEF 120.

Although the PCRF 140 provides the PCEF rule index information to the PCEF in the exemplary embodiment of the present invention, the PCRF 140 may provide the PCEF 120 with the QoS exception parameter in addition to the PCC rule. have. In this case, the PCRF 140 receives the service information from the application function device 150, generates the PCC rules, and provides the generated PCC rules and QoS exception parameters to the PCEF 120. Then, when the QoS exception parameter is YES, the PCEF 120 provides the service based on the service flow to the user side terminal 100 based on the PCC rule, and can provide the service regardless of the QoS.

The application function device 150 can provide the PCRF 140 with information on the service requested by the user side terminal 100. [ More specifically, when the user-side terminals 100 negotiate a service quality information request using a session initiation protocol (SIP) or the like, a session description protocol (Session (SDP), or a service description (Service Protocol). The service information generated by the application function device 150 may include at least one of an Internet Protocol (IP), a Port, a Media Type, a bandwidth, application information of the application function device, Information, and the like. Upon receiving the service information request from the PCRF 140, the application function unit 150 transmits the service information to the PCRF 140 in response to the service information request.

The QoS exception parameter, which is a new parameter added according to the embodiment of the present invention, may be added using an extensible markup language (XML), wherein the extensibility generation language is a multipurpose markup It can be applied to describe a lot of kinds of data as a language, and it means a language designed to overcome limitations of HTML by allowing data to be easily transmitted between other systems, especially systems connected to the Internet. And the string is a sequence of symbols or values such as a string or a bit string.

Here, the QoS exception parameters generated in the form of a string using the extensibility generation language are mutually negotiated so that the PCRF 140 and the PCEF 120 of the PDN gateway 130 can encode and decode. That is, the PCF 120 of the PCRF 140 and the PDN gateway 130 basically include a parser that can encode and decode (or parse) an extensibility generating language. Accordingly, when the PCRF 140 encodes and transmits the PCC rule including the QoS exception parameter, the PCEF of the PDN gateway 130 receives and decodes the PCC rule, receives the PCC rule including the QOS exception parameter, Parsing) to obtain PCC rule information including QoS exception parameters.

On the other hand, the interface between the PCRF 140 and the PCEF 120 is defined as a Gx interface. And the Gx interface uses the Diameter protocol. In general, the Diameter protocol is a protocol provided on the basis of TCP or SCTP, and provides a network access control, a network quality assurance, authentication for authorization of service policy assignment, authorization verification, and a billing framework. Since specific details of the DIAMETER protocol are disclosed in 'RFC 3588', only necessary portions will be described in the present invention, and a detailed description thereof will be omitted.

In the exemplary embodiment of the present invention, examples of traffic that is serviced regardless of the QoS include an interactive multimedia service, a video call service, an MMS service, an emergency call service, and a VoIP service.

The provision of the service regardless of the QoS in the embodiment of the present invention means that when the PDN gateway 130 is under the QoS control condition, the service is provided regardless of the QoS control when there is the service request as described above do. For example, when the incoming and outgoing IPs and ports of the user-side terminal 100 are changed by an application operation when a video call is performed, it is possible to process the video call service, which is a corresponding application, irrespective of QoS. The PCRF 140 transmits the index information of the PCC rule including the QoS exception parameter to the PDN gateway 130 and extracts the PCC rule corresponding to the index information of the PCC rule received by the PDN gateway 130 FIG. 2 is a flowchart illustrating a process of providing a service based on a service flow to a user-side terminal 100 regardless of a QoS.

2, the PDN gateway 130 transmits a Charging Credit Request (CCR) message to the PCRF (CCR) message when it is determined that the PCC rule is required according to the traffic request of the user side terminal 100 140 (S200). Then, the PCRF 140 generates a CCA message in response to the CCR message, and transmits the CCA message to the PDN gateway 130 (S202, S204). Here, a Charging Credit Request Answer (CCA message) is encoded with a QoS exception parameter and index information of the PCC rule.

Then, the PDN gateway 130 receives the CCA message, decodes the CCA message (S206), searches the rule database 126 based on the index information of the PCC rule, obtains the PCC rule, (S208). ≪ / RTI >

Accordingly. The PDN gateway 130 may process the traffic of the user side terminal 100 regardless of the QoS based on the PCC rule and the QoS exception parameter when the value of the QoS exception parameter is "YES " (S210). If the value of the QoS exception parameter is "NO ", the PDN gateway 130 provides the QoS service according to the service flow to the user side terminal 100 based on the PCC rule (S212).

FIG. 3 is a flow chart illustrating a process of providing a service after connecting a session to a user-side terminal 100 according to an embodiment of the present invention. Referring to FIG. 3, when the PCRF 140 receives service information from the application function apparatus 150, Transmits the PCC rules and the QoS exception parameters to the PDN gateway 130, and provides the service-based services to the user-side terminal 100 regardless of the QoS, based on the PCC rules and QoS exception parameters received by the PDN gateway 130 FIG.

3, when the service information is received from the application function device 150 in step S300, the PCRF 140 generates a PCC rule based on the service information in step S302, And generates a RAR message (S304). Then, the PCRF 140 transmits an RAA message to the PDN gateway 130 (S306).

After receiving the RAR message, the PDN gateway 130 transmits the RAA message to the PCRF 140 in response to the RAR message (S308), and decodes the RAR message to obtain the PCC rule and the QoS exception parameter (S310).

The PDN gateway 130 can process the traffic of the user side terminal 100 regardless of the QoS based on the PCC rule and the QoS exception parameter when the value of the QoS exception parameter is "YES " (S312). If the value of the QoS exception parameter is "NO ", the PDN gateway 130 provides the QoS service according to the service flow to the user side terminal 100 based on the PCC rule (S314).

According to embodiments of the present invention, the present invention can be applied to a system or a method capable of processing a QoS exception service by adding a QoS exception parameter.

In particular, since it can process traffic irrespective of QoS, it can be used as a technology capable of providing various services regardless of QoS.

100: user side terminal 110: serving gateway
120: PCEF 122: message receiver
124: QoS exception processing unit 126: rule database
130: PDN gateway 140: PCRF
150: Application function device

Claims (7)

A policy and charging enforcement device for storing a plurality of PCC rules and requesting information on PCC rules to be applied to the service when a service request is generated from a user terminal;
A QoS parameter including control information on a Quality of Service (QoS) when providing the service to the user side terminal according to a request of the information on the PCC rule to be applied, And a policy and billing rule setting device for transmitting a response message including a QoS exception parameter as to whether to provide the service to the user side terminal, regardless of the control information, to the policy and billing trial device,
Wherein the policy and billing enforcement device is configured to provide the service to the user side terminal based on the PCC rule included in the response message, wherein the value of the QoS exception parameter included in the response message includes And provides the service to the user-side terminal without controlling the QoS if the value is a value for providing the service.
A system for QoS exception handling.
A rule database in which a plurality of PCC (Policy and Charging Control Rule) rules are stored,
If there is a service request from the user side terminal, the PCC rule to be applied to the service is requested to the PCRF, and then the PCC rule to be applied to the service in response to the request is controlled, and the control for the QoS (Quality of Service) A message reception unit for receiving a response message including QoS exception parameter information about whether or not to provide the service to the user terminal regardless of the QoS parameter information including the information and the control information included in the QoS parameter;
Searching the rule database for the PCC rule corresponding to the response message, and providing the service to the user side terminal based on the searched PCC rule, wherein the value of the QoS exception parameter included in the response message is the control information And a QoS exception processor for providing the service to the user-side terminal without controlling the QoS,
PDN gateway.
A rule generator for generating a Policy and Charging Control Rule (PCC) rule to be applied to the user terminal based on the information about the service as the information about the service requested by the user terminal is received from the application providing device;
A QoS exception parameter setting unit for setting a QoS exception parameter value about whether or not to exclude quality of service (QoS) control for the user side terminal according to the service information;
And a transmission unit for generating a message including a QoS parameter value including the generated PCC rule, the QoS exception parameter value, and control information on QoS when providing the service, and transmitting the generated message to the policy and charging enforcement apparatus,
If the value of the QoS exception parameter is a value for providing the service regardless of the control information, the service provided to the user terminal is independent of the QoS control based on the QoS parameter value
A policy and billing rule setting device for QoS exception handling.
Transmitting a message requesting information on a PCC (Policy and Charging Control Rule) to be applied to the service to a Policy and Charging Rules Function (PCRF) when there is a service request from a user side terminal;
A QoS parameter including control information for QoS (Quality of Service) when providing the service to the user terminal, and a control parameter included in the QoS parameter, Receiving a QoS exception parameter as to whether to provide the service to the user-side terminal regardless of whether the service-
Retrieving a rule corresponding to the PCC rule received in the response from a database storing a plurality of PCC rules;
And providing the service to the user terminal based on the searched PCC rule and the QoS exception parameter, wherein when the value included in the QoS exception parameter is a value for providing the service regardless of the control information, Providing said service without control over QoS
A method for QoS exception handling.
5. The method of claim 4,
The providing of the service to the user-
And provides the service to the user-side terminal regardless of QoS when the value of the QoS exception parameter is "YES "
A method for QoS exception handling.
Generating a Policy and Charging Control Rule (PCC) rule to be applied to the user terminal based on information about the service requested by the user terminal as received from the application providing apparatus;
Setting a QoS exception parameter value for whether to exclude quality of service (QoS) control for the user terminal according to the service information;
Generating a message including a QoS parameter value including the generated rule, the QoS exception parameter value, and control information on QoS when providing the service, and transmitting the generated message to the policy and billing enforcement apparatus,
Wherein the policy and billing enforcement device provides a service requested by the user terminal based on the QoS exception parameter value and the rule, and when the QoS exception parameter value is a value for providing the service regardless of the control information, And providing the service to the user-side terminal without controlling the QoS.
A method for QoS exception handling. delete

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