KR20200081353A - Method for updating quality information of service - Google Patents

Abstract

Disclosed is a service quality information update method of a packet data network gateway. According to the present invention, the service quality information update method comprises the steps of: receiving a bearer modification request message including a state information change event of a mobile communication terminal device from a serving gateway; transmitting a service policy request message including identification information on the state information change event to a policy processing unit; receiving a service policy response message including service quality related information from the policy processing unit receiving the service policy request message; transmitting a bearer modification response message based on the service policy response message to the serving gateway; and transmitting a bearer update request message for updating the service quality related information to the serving gateway based on the service quality related information included in the service policy response message.

Description

How to update service quality information{METHOD FOR UPDATING QUALITY INFORMATION OF SERVICE}

The present invention relates to a method for updating service quality information, and more particularly, to a method for updating quality information of a service to be provided to a mobile communication terminal device.

As is well known, 3GPP Release 8 describes an Evolved Packet Core (EPC), which is a network architecture, as one of the mobile communication systems. EPC is a set of network nodes for 3GPP Long Term Evolution (LTE) system. EPC has evolved the core network of the existing 3GPP system architecture to support Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN), which is an evolved RAN, and also increases the efficiency of the packet network. For this, it has an efficient network structure that simplifies network nodes. A wireless communication system including EPC and E-UTRAN may be referred to as an Evolved Packet System (EPS), and the LTE mobile communication system currently being serviced in Korea corresponds to this.

The EPC for the LTE mobile communication system is largely divided into three logical entities: MME (Mobility Management Entity), SGW (Serving Gateway), and PGW (Packet Data Network Gateway).

Among them, the MME is responsible for signal control between the eNodeB and the SGW serving as a base station, and determines routing for transmission data of the mobile communication terminal device. The MME performs paging message distribution to the eNodeB, NAS (Non Access Spectrum) signaling, intra-network handover control, and tracking area list management. In addition, the MME performs selection of SGW and PGW, selection and modification of MME for handover, and terminal authentication.

The SGW is a user plane node that performs session control to process payload traffic according to the established session. Interworking with eNodeB and S1-U interface, it supports handover in 3GPP, sets PGW and EPS bearer, and delivers PDU (Packet Data Unit) using tunneling.

The PGW is a user plane node that allocates an IP address of a mobile communication terminal device and performs session control interworking with external Internet networks and non-3GPP networks. It maintains SGW and external network and routing information for packet service, and performs tunneling and IP routing functions.

On the other hand, recently, LTE-A (LTE Advanced) service, which has the core of using multiple LTE bands as a single band using frequency aggregation (Carrier Aggregation, hereinafter referred to as “CA”) technology, has been commercialized. The LTE-A service supports a communication speed as fast as the increased bandwidth due to the frequency aggregation technology, and for this, an LTE-A modem must be installed in the mobile communication terminal device.

Therefore, in the mobile communication service system, an LTE-A modem is installed in the mobile communication terminal device and is managed through a user profile as to whether or not CA service can be provided, and the LTE-A modem is based on the user profile. CA service is selectively provided only to mobile communication terminal devices that are confirmed to be mounted.

However, the prevalence of mobile communication terminal devices equipped with LTE-A modems is steadily increasing, and the increase in mobile communication terminal devices capable of such CA services is a large percentage of service capacity from the perspective of mobile communication service systems. Since it can be occupied, efficient operation through management of radio resources is necessary.

Republic of Korea Patent Publication No. 10-2012-0133982, date of publication December 11, 2012.

According to an embodiment of the present invention, in order to efficiently manage radio resources by selectively applying a CA service for each type of data service, the mobile communication terminal device moves from an idle state to an active state. Provided is a service quality information update method capable of initializing a service policy in a situation in which a change event of switching state information occurs.

The problem to be solved of the present invention is not limited to those mentioned above, and another problem to be solved that is not mentioned will be clearly understood by a person having ordinary knowledge to which the present invention belongs from the following description.

A method of updating quality of service information of a packet data network gateway according to an aspect of the present invention includes receiving a bearer modification request message including a status information change event of a mobile communication terminal device from a serving gateway, and the status information change event. Transmitting a service policy request message including identification information to the policy processing unit, and receiving a service policy response message including service quality related information from the policy processing unit receiving the service policy request message, and the service policy Transmitting a bearer modification response message based on a response message to the serving gateway, and requesting a bearer update for updating service quality related information to the serving gateway based on the service quality related information included in the service policy response message. And sending a message.

According to an embodiment of the present invention, the mobile communication terminal device transmits a bearer update request message continuously after transmitting a bearer modification response message in a situation in which a change event of the state information changing from an idle state to an active state occurs, thereby transmitting state information The service policy can be initialized in a situation where a change event of?

Accordingly, it is possible to efficiently manage radio resources by selectively applying CA services for each type of data service.

1 is a network configuration diagram of a mobile communication system to which an apparatus for updating quality of service information according to an embodiment of the present invention can be applied.
2 is a block diagram of an apparatus for updating quality of service information according to an embodiment of the present invention.
3 is a flowchart illustrating a service quality information update method according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims.

In describing embodiments of the present invention, when it is determined that a detailed description of known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a network configuration diagram of a mobile communication system to which an apparatus for updating quality of service information according to an embodiment of the present invention can be applied, and illustratively shows an LTE mobile communication system capable of providing an LTE-A service. The apparatus for updating quality of service information according to an embodiment of the present invention (reference numeral 200 in FIG. 2) may be mounted on the PGW 160 illustrated in FIG. 1 or may interwork with the PGW 160 in a separately installed state.

As shown in Figure 1, LTE mobile communication system, eNodeB (100), MME (Mobility Management Entity) 140, SGW (Serving Gateway) 150, PGW (Packet Data Network Gateway) 160, PCRF (Policy) & Charging Rule Function (170), Home Subscriber Server (HSS) 180, Deep Packet Inspection (DPI) 190, and the like.

1, reference numeral 120 denotes a service area of the eNodeB 100, and 131 to 134 denote a plurality of cells existing in the service area 120. A plurality of mobile communication terminal devices 111 to 116 may be located in the plurality of cells 131 to 134 to receive a voice communication service and a data communication service. Of course, the number of cells 131 to 134 and mobile communication terminal devices 111 to 116 in the service area 120 shown in FIG. 1 is merely an example.

The mobile communication terminal devices 111 to 116 are located in any one of the plurality of cells 131 to 134 existing in the service area 120 of the eNodeB 100 to receive a data communication service. For example, the mobile communication terminal devices 111 to 116 may be implemented in various forms such as a smart phone, a notepad, and a tablet computer.

The eNodeB 100 communicates with the mobile communication terminal devices 111 to 116 to serve as a base station to ensure mobility. The eNodeB (100) is a radio bearer control (radio bearer control), radio admission control (radio admission control), connection mobility control (connection mobility control), dynamic resource allocation (dynamic resource allocation) to the mobile communication terminal device (111 to 116) ) And performs a radio resource management function. In addition, IP header compression and decryption of user data streams, routing of user plane data to SGW 150, scheduling and transmission of paging messages, scheduling and transmission of broadcast information, Measurement and measurement reporting settings for mobility and scheduling are performed.

The MME 140 is responsible for signal control between the eNodeB 100 and the SGW 150, and determines routing for transmission data of the mobile communication terminal devices 111 to 116. The MME 140 performs paging message distribution to the eNodeB 100, NAS (Non Access Spectrum) signaling, intra-network handover control, and tracking area list management. In addition, the MME 140 performs selection of the SGW 150 and the PGW 160, selection and change of the MME 140 for handover, and terminal authentication. The MME 140 processes a control signal when there is a combination request from a mobile communication terminal device 111 to 116 or another network node, such as the PGW 160 or the SGW 150, or a request for establishing a radio bearer. Responsible for various functions of a control plane such as, and receiving subscriber profile information, authentication, and location-related data from the HSS 180, setting up an Evolved Packet System bearer or IP tunnel. It performs functions such as mobility management.

The SGW 150 is a user plane node that performs session control to process payload traffic according to the established session. Interworking with eNodeB 100 and S1-U interface, it supports handoff in 3GPP, sets PGW 150 and EPS bearer, and delivers PDU (Packet Data Unit) using tunneling. The SGW 150 selects the PGW 160 based on the subscriber profile, and in the case of an inbound roaming call, generates charging data for mutual settlement with the PGW of the home network.

In particular, the SGW 150 transmits a modify bearer request message to the PGW 160 when a change event of state information in which the mobile communication terminal devices 111 to 116 change from an idle state to an active state occurs. , The PGW 160 receives a modify bearer answer message including service quality related information. Then, when the service quality-related information determined by the PCRF 170 from the PGW 160 is received in the bearer update request message, it is transmitted to the eNodeB 100 so that the CA service can be selectively applied to each type of data service. do.

The PGW 160 is a user plane node that allocates IPs of the mobile communication terminal devices 111 to 116 and performs session control interworking with external Internet networks and non-3GPP networks. For packet service, it maintains routing information with SGW 150 and external networks, and performs tunneling and IP routing functions. In addition, PDUs are delivered to the SGW 150 and the external network. The PGW 160 performs billing processing in the case of a local call.

Particularly, the PGW 160 may be equipped with a service quality information updating device (reference numeral 200 in FIG. 2) according to an embodiment of the present invention or may interwork with a separately installed service quality information updating device (reference numeral 200 in FIG. 2). .

The PGW 160 receives a bearer modification request message including a change event for state information of the mobile communication terminal devices 111 to 116, and identifies the change event of the state information based on the received bearer modification request message A message including information is generated, and the generated message can be transmitted to the PCRF 170 according to the call processing path. In addition, the PGW 160 transmits a bearer modification response message based on the service policy response message through a downlink path according to the call processing path, and transmits service quality related information and preset service quality related information included in the service policy response message. It compares and determines whether they are different and sends a bearer update request message for updating service quality related information through a downlink path in different cases according to the result of the determination.

The PCRF 170 provides dynamic QoS (Quality of Service) and charging rules according to service data flow to perform communication policy and charging processing in the communication network. The PCRF 170 can be regarded as a kind of policy processing unit to perform processing for the communication policy.

Particularly, the PCRF 170 receives a message including identification information for a change event of status information by the mobile communication terminal devices 111 to 116 from the PGW 160, and the service type of the data packet from the DPI 190. Receive information about. In addition, the PCRF 170 determines service quality related information for each type of service for the mobile communication terminal devices 111 to 116, and transmits a message including the determined service quality related information, so that the service quality related information is eNodeB 100. To be delivered.

The HSS 180 is a network node including a database that contains subscriber information for the LTE mobile communication network, and stores subscriber profile information, authentication, and location related data.

DPI 190 manages traffic by analyzing data packets transmitted and received over a communication network. The DPI 190 determines the type of service by opening all data packets, and provides the PCRF 170 with information on the determined service type. For example, it is possible to grasp what application (app) generated data, including m-VoIP (mobile voice call).

2 is a block diagram of an apparatus for updating quality of service information according to an embodiment of the present invention. The apparatus for updating quality of service information 200 according to an exemplary embodiment of the present invention may be mounted on the PGW 160 illustrated in FIG. 1 or may interwork with the PGW 160 in a separately installed state.

As shown in this, the service quality information updating apparatus 200 includes a message receiving unit 210, a determining unit 220, and a message transmitting unit 230.

The message receiving unit 210 receives a bearer modification request message including status information of the mobile communication terminal device, and receives a service policy response message according to the service policy request message.

The determination unit 220 compares the service quality related information included in the service policy response message with preset service quality related information to determine whether they are different. The determination unit 220 may compare the preset QCI (QoS Class Identifier) information with the QCI information included in the service policy response message to determine whether they are different.

The message transmitter 230 transmits a service policy request message based on a bearer modification request message through an uplink path according to a call processing path, and a bearer correction response message based on a service policy response message through a downlink path according to a call processing path And a bearer update request message for updating the service quality related information through a downlink in different cases according to the result of the determination by the determination unit 220.

3 is a flowchart illustrating a service quality information update method according to an embodiment of the present invention.

As shown in this, the method for updating service quality information according to an embodiment includes receiving a bearer modification request message including state information of a mobile communication terminal device in a state in which service quality related information is previously set (S301 to S305). .

And, after generating a message including the identification information for the change event of the status information, and further comprising the step of transmitting the generated message along the call processing path (S307).

Subsequently, the method further includes receiving a service policy response message according to the service policy request message (S309).

Then, after updating the preset service quality related information based on the service quality related information included in the received service policy response message, a bearer modification response message based on the service policy response message is transmitted through a downlink according to the call processing path. It includes the steps (S311, S313).

In addition, a step (S315) of determining whether they are different by comparing service quality related information included in the service policy response message with preset service quality related information is included.

Then, when the service quality-related information included in the service policy response message is different from the preset service quality-related information according to the determination result, transmitting a bearer update request message for updating the service quality-related information through a downlink path. (S317) and receiving a bearer update response message thereto (S319).

Hereinafter, a process of updating service quality information between nodes in a mobile communication system to which the apparatus 200 for updating service quality information according to an embodiment of the present invention is applied will be described with reference to FIGS. 1 to 3. According to the present invention, the mobile communication system can efficiently manage radio resources by selectively applying CA services for each type of data service.

First, in the PGW 160, information related to quality of service, which is a standard for providing services to mobile communication terminal devices 111 to 116, such as QCI (QoS Class Identifier), is preset (S301).

In addition, when a change event of state information in which state information is changed, such as when the mobile communication terminal devices 111 to 116 are changed from an idle state to an active state (S303), the SGW 150 requests to modify a bearer. ) Message to the PGW 160 (S305).

Then, the message receiving unit 210 of the service quality information updating device 200 receives a bearer modification request message including the status information of the mobile communication terminal devices 111 to 116 from the SGW 150.

In addition, the determination unit 220 of the service quality information updating device 200 determines whether a change event of the status information has occurred based on the received bearer modification request message, and the message transmission unit 230 changes the status information It generates a message including identification information for and transmits it to the PCRF 170 according to the call processing path (S309). For example, the message transmitting unit 230 generates a CCR-U (Credit Control Request-Update) message as a service policy request message including identification information for a change event of status information and transmits it to the PCRF 170 (S307).

Next, the PCRF 170 receives a message including the identification information for the change event of the status information by the mobile communication terminal devices 111 to 116 from the PGW 160, that is, a CCR-U message. In addition, information on the service type of the data packet may be received from the DPI 190.

Then, the PCRF 170 may discriminate whether an event for changing the status information has occurred in the mobile communication terminal devices 111 to 116. In addition, the PCRF 170 determines service quality related information for each service type for the mobile communication terminal devices 111 to 116, and transmits a message including the determined service quality related information to the PGW 160 (S309). For example, the PCRF 170 may transmit a credit control answer-update (CCA-U) message to the PGW 160 as a service policy response message including service quality related information. For example, the quality of service information included in the CCA-U message may include a QCI value, and the PCRF 170 may classify the QCI value so that a service policy is initialized for a change event of status information.

Subsequently, the message receiving unit 210 of the service quality information updating apparatus 200 receives the service policy response message according to the service policy request message from the PCRF 170, and the PGW 160 receives the PCRF 170 through the call processing path. Based on the service quality-related information included in the message received from, the preset service quality-related information is updated (S311). Here, the quality of service information updated by the PGW 160 includes QCI, Guaranteed Bit Rate (GBR), QoS, and the like.

Then, the message transmitting unit 230 of the apparatus for updating quality of service information 200 transmits a bearer modification response message to the SGW 150 as a response to the bearer modification request message received in step S305 (S313). .

Next, the determination unit 220 of the service quality information updating device 200 compares the service quality related information included in the service policy response message received in step S309 with the service quality related information set in step S301 to determine whether they are different. It is determined (S315). For example, the determination unit 220 may compare the preset QCI information with the QCI information included in the service policy response message to determine whether they are different.

In addition, the message transmission unit 230 of the service quality information updating apparatus 200 has the service quality related information included in the service policy response message and the preset service quality related information according to the result of the determination by the determination unit 220. If it is determined to be different, an update bearer request message for updating the quality of service related information is transmitted to the SGW 150 through the downlink according to the call processing path (S317).

Here, the reason for transmitting the different types of messages over the two steps of step S313 and step S317 is that the quality of service related information cannot be included in the bearer modification response message transmitted in step S313.

Service quality related information included in the bearer update response message of step S317 is transmitted to the eNodeB 100 by the SGW 150, and the eNodeB 100 is based on the service quality related information to the mobile communication terminal devices 111 to 116. For scheduling, radio resources can be efficiently operated by adjusting scheduling by data service type and selectively applying CA service by data service type.

Meanwhile, the SGW 150 receiving the bearer update request message from the PGW 160 through step S317 transmits a bearer update response message to the PGW 160 as a response thereto (S319).

Combinations of each block in the block diagrams and respective steps in the flowcharts attached to this specification may be performed by computer program instructions. These computer program instructions may be mounted on a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, so that instructions executed through a processor of a computer or other programmable data processing equipment may be used in each block or flowchart of the block diagram. In each step, means are created to perform the functions described. These computer program instructions can also be stored in computer readable or computer readable memory that can be oriented to a computer or other programmable data processing equipment to implement a function in a particular way, so that computer readable or computer readable memory The instructions stored in it are also possible to produce an article of manufacture containing instructions means for performing the functions described in each step of each block or flowchart of the block diagram. Computer program instructions can also be mounted on a computer or other programmable data processing equipment, so a series of operational steps are performed on a computer or other programmable data processing equipment to create a process that is executed by the computer to generate a computer or other programmable data. It is also possible for instructions to perform processing equipment to provide steps for executing the functions described in each block of the block diagram and in each step of the flowchart.

Further, each block or each step can represent a module, segment, or portion of code that includes one or more executable instructions for executing the specified logical function(s). It should also be noted that in some alternative embodiments it is possible that the functions mentioned in blocks or steps occur out of order. For example, two blocks or steps shown in succession may in fact be executed substantially simultaneously, or it is also possible that the blocks or steps are sometimes performed in reverse order depending on the corresponding function.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical thoughts within the equivalent range should be interpreted as being included in the scope of the present invention.

According to an embodiment of the present invention, in a situation in which a mobile communication terminal device changes a state information change event from an idle state to an active state, the bearer update request message is continuously transmitted after the bearer modification response message is transmitted, and then the state information is transmitted. The service policy can be initialized in a situation where a change event of?

Therefore, it is possible to efficiently manage radio resources by selectively applying CA services for each type of data service.

The method and apparatus for updating service quality information according to an embodiment of the present invention may be used in an LTE mobile communication system that provides LTE-A service.

100: eNodeB 140: MME
150: SGW 160: PGW
170: PCRF 180: HSS
190: DPI 200: service quality information update device
210: message receiving unit 220: discrimination unit
230: message transmission unit

Claims (2)

Receiving a bearer modification request message including a state information change event of the mobile communication terminal device from the serving gateway;
Transmitting a service policy request message including identification information for the status information change event to a policy processing unit;
Receiving a service policy response message including service quality related information from a policy processing unit that has received the service policy request message;
Transmitting a bearer modification response message based on the service policy response message to the serving gateway;
And transmitting a bearer update request message for updating the quality of service related information to the serving gateway based on the quality of service related information included in the service policy response message.
Method for updating quality of service information of packet data network gateway. According to claim 1,
The service quality-related information is characterized in that it is QCI (QoS Class Identifier) information
Method for updating quality of service information of packet data network gateway.

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