KR20070013621A - Service quality control system and method using access point name - Google Patents

Abstract

The present invention relates to a system and method for controlling the quality of service using an access point name (APN) in a WCDMA network. According to a preferred embodiment of the present invention, a base station; Gateway GPRS Support Node (GGSN); And a quality of service mapping table storing at least one quality of service corresponding to the name of the access point, and extracting an optimal quality of service corresponding to the name of the access point from the quality of service mapping table according to the state of the wireless network and the radio resources. The present invention provides a mobile communication system for controlling a call quality for each service, including a serving GPRS support node (SGSN) for allocating a radio network and a radio resource as the quality of service. Therefore, according to the present invention, it is possible to efficiently manage and charge a wireless network by allocating a service quality corresponding to a service in the wireless communication network.

Description

System and method controlling quality of service using access point name

1 is a system configuration diagram for controlling a quality of service (QoS) using an access point name (APN) according to an embodiment of the present invention.

2 is a diagram illustrating a session establishment process in a WCDMA packet network according to an embodiment of the present invention.

3 is an exemplary diagram illustrating the contents of a general Activate PDP Context Request message.

4 is a QoS mapping table according to an access point name (APN) according to an embodiment of the present invention.

5 is a flowchart illustrating a quality of service (QoS) allocation process for controlling quality of service (QoS) in the SGSN according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: mobile communication terminal

120: Serving GPRS Support Node (SGSN)

130: Gateway GPRS Support Node (GGSN)

The present invention relates to quality of service, and more particularly, to a method and system for controlling quality of service (QoS) using an access point name (APN) in a WCDMA network.

In general, when a mobile communication terminal attempts a packet call, it is routed to a server that provides an external packet service through a WCDMA network. In this case, an APN including routing information corresponding to a service to be accessed from a mobile communication terminal to a WCDMA network and quality of service (QoS) information corresponding to a data service to be used are transmitted. In the WCDMA network that receives the APN and the QoS information, the packet call is routed to an external packet network server that interprets the APN and provides a data service. In addition, the WCDMA network has an uplink / downlink maximum bit rate, a transfer delay, and a traffic handling priority corresponding to a quality of service (QoS) required by the mobile communication terminal. ), Etc.

As such, although the data service to be used in the mobile communication terminal, the access point name corresponding to the data service, and the quality of service (QoS) corresponding to the data service are closely related to each other, they are managed separately. As a result, there is a problem in that the statistical data including billing corresponding to the data service cannot be unified, and it is also difficult to grasp information such as call patterns of users.

Accordingly, an object of the present invention for solving the above-mentioned problems is to divide an APN according to a data service and to allocate a radio network and radio resources with an optimal quality of service (QoS) corresponding to the APN. It is to provide a mobile communication system and method for controlling the call quality per service.

Another object of the present invention is to assign a service quality corresponding to a service in a wireless communication network to efficiently manage and / or use a wireless network or a wireless resource, and to control call quality for each service that can unify statistical data including billing. It is to provide a mobile communication system and method.

Other objects of the present invention will be easily understood through the description of the following examples.

In order to achieve the above object, according to an aspect of the present invention, there is provided a mobile communication system capable of allocating a radio network and radio resources with an optimal quality of service in response to an APN for each service.

According to an embodiment of the present invention, a base station for receiving and transmitting an access point name corresponding to a data service to be connected from a mobile communication terminal; A gateway GPRS support node (GGSN) connected to a server corresponding to a service supported by a packet network at each port; And a quality of service mapping table storing at least one quality of service corresponding to the name of the access point, and extracting an optimal quality of service corresponding to the name of the access point from the quality of service mapping table according to the state of the wireless network and the radio resources. The present invention provides a mobile communication system for controlling a call quality for each service, including a serving GPRS support node (SGSN) for allocating a radio network and a radio resource as the quality of service.

The serving GPRS support node may allocate a wireless network and a radio resource by extracting a low quality of service corresponding to the access point name from the quality of service mapping table when the traffic of the wireless network is congested or lacks a radio resource.

The quality of service includes traffic class, delivery order, delivery of erroneous service data unit, maximum SDU size, and maximum uplink / downlink bit rate. It may be a combination of at least one of a maximum bit rate, a transfer delay, and a traffic handling priority parameter value.

The access point name may correspond one-to-one to the data service.

According to another aspect of the present invention, a method for controlling a quality of service at a serving GPRS support node of a mobile communication system including a base station, a serving GPRS support node, and a gateway GPRS support node is supported.

According to a preferred embodiment of the present invention, a service quality control method performed in the serving GPRS support node of a mobile communication system including a base station, a serving GRPS support node, and a gateway GPRS support node, wherein the serving GPRS support node Includes a quality of service mapping table that maps and stores at least one quality of service to an access point name, receiving a PDP context activation request message from the mobile station, wherein the PDP context activation request message is received from the mobile terminal; ; Extracting, from the PDP context activation request message, an access point name including routing information to a server providing a data service; Extracting, from the service quality mapping table, an optimal quality of service corresponding to the access point name according to traffic of a wireless network corresponding to the access point name and a state of a radio resource; Allocating a radio network and a radio resource with the extracted quality of service; And transmitting a PDP context creation request message to a gateway GPRS support node corresponding to the access point name.

If the traffic of the wireless network is congested or the radio resource is insufficient, extracting a low quality of service corresponding to the access point name from the quality of service mapping table and allocating a wireless network and radio resources with the extracted low quality of service. It may further include.

The method may further include storing an access point name corresponding to a service and a service quality corresponding to the access point name in the service quality mapping table.

The access point name may be routing information to a port of a gateway GPRS support node connected to an external packet network providing the data service.

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

1 is a system configuration diagram for controlling a quality of service (QoS) using an access point name (APN) according to an embodiment of the present invention.

As shown in FIG. 1, a mobile communication system for controlling a quality of service (QoS) using an access point name (APN) according to the present invention includes a mobile communication terminal 110, a wireless access network (UTRAN: UMTS Terrestrial Radio Access Network), The serving GPRS support node 120 and the gateway GPRS support node 130 are configured.

The mobile communication terminal 110 is a terminal capable of performing wireless Internet (for example, a video, an Internet TV, an e-mail service, etc.) through a communication network, and is a conventional mobile phone, PDA, smart phone, and mobile broadcast system (MBS). It can include all the phones.

When the mobile communication terminal 110 attempts a packet call to use a data service, it provides an external packet service through a base transceiver system (BTS) through a WCDMA network including a serving GPRS support node and a gateway GPRS support node. Routing to the server.

That is, the mobile communication terminal 110 transmits a PDP context activation request message requesting access to a server of an external packet network to use a data service to a base station (BTS). A base station (BTS) is a server that provides data service of an external packet network through a serving GPRS support node 120 and a gateway GPRS support node 130 through a radio access network (UTRAN) through a base station controller (BSC). I can connect it. Here, the base station (BTS) performs a wireless connection with the mobile communication terminal and a wired / wireless connection function between the mobile communication terminal and the base station controller. The base station controller (BSC) performs a function of managing and controlling the base station.

In addition, the radio access network (UTRAN) may be composed of a radio network controller (RNC) and a radio transceiver subsystem (RTS). Here, a radio network controller (RNC) performs functions for radio resource management of a WCDMA system, manages a base station in a wireless subscriber network, and manages an interface between a radio controller (RNC) and other network elements. To perform. In addition, the radio network controller (RNC) has a direct link between the radio network controller (RNC), the base station of the wireless subscriber network, the RNC interface, and the RNC interface is composed of an AAL2 ATM link, and the RNC and the core network (CN) interface are AAL2 It can be configured as 5 ATM links. The wireless transceiver subsystem (RTS) converts an intermediate frequency signal into an RF signal through a forward link and converts an RF signal into an intermediate frequency signal through a reverse link to perform signal processing on the wireless communication signal.

Serving GPRS support node 120 (SGN: Serving General Packet Radio Service Support Node, hereinafter referred to as "SGSN") tracks the location of the mobile communication terminal 110, security functions, access control, and session management functions corresponding to GPRS. Perform authentication, billing functions, and more. In addition, the SGSN 120 transmits packet data to the mobile communication terminal 110. The SGSN 120 has a Quality of Service (QoS) mapping table that maps and stores one or more quality of service corresponding to an APN as illustrated in FIG. 4. When a message for setting up a packet call (for example, a PDP context activation request message) is transmitted from the mobile communication terminal 110, the APN is extracted from the message and the quality of service corresponding to the APN. The QoS may be extracted from the quality of service mapping table to allocate radio resources and radio resources.

The gateway GPRS support node 130 (GGSN: hereinafter referred to as "GGSN") is an IP-based node for processing high-speed packet data for packet data service of GPRS. The GGSN 130 is a serving node of an IP-based packet network that provides a high-speed packet data service for GPRS data service. The GGSN 130 provides mobility of a packet data service and processes various data related protocols. The GGSN 130 generally provides mainly address assignment, domain address translation and maintenance functions. In addition, a server of a service provided by a mobile communication network may be connected to each port of the GGSN 130.

For example, the first port of the GGSN 130 that can access the KTF network is Magic & Service (magicn.ktf.com), the second port of the GGSN 130, MMS service (mms.ktf.com), GGSN ( The third port of 130 may be connected to a server providing a PIM service (fimm.ktf.com) and a fourth port of the GGSN 130 may be an ISP service (isp.ktf.com). In the present specification, the five service-specific servers provided by the KTF network are connected to the ports of the respective GGSNs 130, but the server is divided by the services provided by the packet network and the access point names (APNs) are divided by the service GGSNs. The same may be applied to the case where an APN for each service corresponds to each port of 130.

FIG. 2 is a diagram illustrating a session establishment process in a WCDMA packet network according to an embodiment of the present invention. FIG. 3 is an exemplary diagram illustrating a content of a general Activate PDP Context Request message. FIG. 4 is a QoS mapping table according to an APN according to an embodiment of the present invention, and FIG. 5 is a QoS control in SGSN according to an embodiment of the present invention. Is a flowchart illustrating a process of allocating a quality of service (QoS) for the service. In the session establishment process of the WCDMA network described below, a PDP context activation request message requesting packet call setup from the mobile communication terminal 110 is transmitted to the SGSN 120 of the WCDMA network through the base station (BTS). In this case, the SGSN 120 undergoes a process of generating a PDP context in the GGSN 130. However, for convenience of understanding and explanation, the description is limited to data transmission and reception between the mobile communication terminal 110, the SGSN 120, and the GGSN 130.

Referring to FIG. 2, a process of establishing a session by attempting a packet call in the mobile communication terminal 110 will be described. In step 210, the mobile communication terminal 110 uses a packet data service (that is, a data service). In order to request a corresponding packet call setting, an Activate PDP Context Request message is transmitted to the SGSN 120.

Here, the mobile communication terminal 110 selects whether to use a static address or a dynamic address in an Activate PDP Context Request message, as shown in FIG. 3. If the mobile communication terminal 110 selects to use the static address, the mobile terminal 110 transmits the information to the SGSN 120 including the static address. In addition, the mobile communication terminal 110 selects a service to be connected to an external packet network, and transmits an access point name (APN) including routing information about the service to the SGSN 120.

In operation 215, the SGSN 120 receives an Activate PDP Context Request message and transmits a Create PDP Context Request message to the GGSN 130.

Hereinafter, referring to FIG. 5, a process of allocating a radio network and radio resources with a quality of service (QoS) corresponding to an access point name (APN) in the SGSN 120 will be described. In step 510, the SGSN 120 performs mobile communication. From the Activate PDP Context Request message received from the terminal 110, an access point name (APN) including routing information to a server providing a data service to be accessed by the mobile terminal 110 is extracted. do.

In operation 520, the SGSN 120 analyzes a state of a radio network RN and a radio resource corresponding to the APN. That is, the SGSN 120 checks whether the mobile communication terminal 110 is congested with the traffic of the radio network RN of the service to which the mobile communication terminal 110 is connected, and whether the radio resource is sufficient.

If there is no shortage of radio resources, in step 530 the SGSN 120 extracts an optimal quality of service (QoS) corresponding to the access point name (APN) from the quality of service (QoS) mapping table, so that the radio network (RN) and wireless Allocate resources. Here, the quality of service (QoS) mapping table stores a plurality of quality of service (QoS) information corresponding to one access point name (APN).

For example, the quality of service (QoS) corresponding to the access point name (APN) is, as illustrated in FIG. 4, the optimal quality of service (QoS) information in the primary quality of service column, and the access point name (APN) in the auxiliary quality of service column. QC information for allocating the wireless network and the wireless resource when the traffic of the wireless network is congested or the wireless resource is insufficient may be mapped and stored.

In FIG. 3, two QoSs are mapped to one APN, but three or more QoSs may be mapped to one APN.

In operation 540, the SGSN 120 generates a Create PDP Context Request message to correspond to the extracted quality of service (QoS) corresponding to the access point name (APN).

However, if the traffic in the wireless network is congested or the radio resources are insufficient, at step 550 the SGSN 120 may provide a low quality of service (QoS) corresponding to the access point name (APN) in the quality of service (QoS) mapping table. Extracts and allocates radio network (RN) and radio resources.

That is, the SGSN 120 separately sets a quality of service (QoS) mapping table that defines one or more quality of service (QoS) corresponding to the access point name (APN) corresponding to the service, so that the mobile communication terminal 110 intends to use it. A radio network (RN) and radio resources may be allocated to a quality of service (QoS) corresponding to a service.

For example, in the KTF network, an access point name (KPN) is set for each service corresponding to various services provided by the KTF, and a server corresponding to the service provided by the KTF is configured for each port of the GGSN to access each service. Suppose it is.

That is, Magic & Service (magicn.ktf.com) on GGSN port 1, MMS service (mms.ktf.com) on port 2 of GGSN, and PIM on port 3 of GGSN, which can access KTF network. Service (fimm.ktf.com) and ISP service (isp.ktf.com) are set in port 4 of GGSN.

As described above, when the APN is set for each service provided by the KTF, if the mobile communication terminal 110 requests the packet call setting to use the PIM service, the SGSN 120 performs the PIM ( fimm) The APN corresponding to the service is extracted from the Activate PDP Context Request message. In addition, SGSN 120 checks the state of radio network (RN) and radio resource corresponding to APN and maps optimal quality of service (QoS) corresponding to APN (QoS). Extracted from the table, the radio network (RN) and radio resources can be allocated. That is, by extracting 'QoS 4' from the Quality of Service (QoS) mapping table illustrated in FIG. 3, setting a radio network (RN) and a radio resource to correspond to 'QoS 4' and creating a PDP context request (Create PDP Context Request) message may be generated and transmitted to the GGSN 130.

However, if the radio network (RN) and radio resources are insufficient, the SGSN 120 extracts the low 'QoS 5' instead of the 'QoS 4' extracted from the quality of service (QoS) mapping table, and corresponds to the 'QoS 5'. A radio resource may be allocated to the network RN.

In this way, the SGSN 120 efficiently allocates radio resources by allocating a radio network RN and radio resources to correspond to a properly defined quality of service (QoS) corresponding to a service to be accessed by the mobile communication terminal 110 in the SGSN 120. Can be used.

In this case, the parameters defined for allocating radio resources corresponding to the quality of service (QoS) include traffic class, delivery order, delivery of erroneous service data unit, and maximum SDU size ( Maximum SDU size), uplink / downlink maximum bit rate, transfer delay, traffic handling priority, and the like.

In general, the SGSN 120 uses an APN to access a service to be used by the mobile terminal 110 in an Activate PDP Context Request message transmitted from the mobile terminal 110. To select the GGSN 130. In addition, the SGSN 120 allocates a radio network (RN) and radio resources to a quality of service (QoS) required by the mobile communication terminal 110. The SGSN 120 generates a Create PDP Context Request message and transmits the generated PDP Context Request message to the corresponding GGSN 130.

In such a case, the SGSN 120 should set a packet call corresponding to the quality of service (QoS) required by the mobile communication terminal 110 even if the quality of service (QoS) required by the mobile communication terminal 110 is not appropriate. do.

For example, suppose that the service to be used in the mobile communication terminal 110 is an e-mail service. While the mobile terminal 110 transmits an Active PDP Context Request message to the SGSN 120, an Active PDP Context Request message corresponds to a Video On Demand (VOD) service. Even if a quality of service (QoS) is requested, the SGSN 120 should attempt a packet call by setting the quality of service (QoS) requested by the mobile communication terminal 110. As a result, unnecessary radio resources are wasted, and the user has to pay unnecessary fees.

Accordingly, the SGSN 120 according to the present invention uses a service point (APo) corresponding to the service and a service quality (QoS) mapping table corresponding to the access point name (APN) to use in the mobile communication terminal 110. A radio network (RN) and a radio resource may be allocated to an optimal quality of service (QoS) corresponding to the RN.

In step 215, the SGSN 120 transmits a Create PDP Context Request message to the GGSN 130 in response to an Activate PDP Context Request message received from the mobile communication terminal 110. do.

In step 220, the GGSN 130 creates a PDP context and sends a Create PDP Context Response message to the SGSN 120.

In step 225, the SGSN 120 receives a Create PDP Context Response message from the GGSN 130 and transmits an Activate PDP Context Accept message to the mobile communication terminal 110.

In step 230, the mobile communication terminal 110 transmits a router solicitation message to the GGSN 130.

In step 235, the GGSN 130 transmits a Router Advertisement (RA) message to the mobile communication terminal 110.

Accordingly, the packet channel between the mobile communication terminal 110 and the server of the service to be used in the mobile communication terminal 110 is set. By using this, packet data transmission and reception are possible between the mobile communication terminal 110 and the service server.

As such, by allocating a quality of service (QoS) corresponding to a service to be used by the mobile communication terminal 110 in the SGSN 120, it is possible to use radio resources more efficiently, so as not to pay unnecessary usage fees to the user. can do.

As described above, the present invention provides a mobile communication system and method capable of controlling the quality of service (QoS) corresponding to the access point name (APN), thereby dividing the access point name (APN) in accordance with the data service and the access point name ( There is an effect of allocating a radio network and radio resources with an optimal quality of service (QoS) corresponding to the APN.

In addition, the present invention can efficiently manage and / or use a wireless network or a wireless resource by allocating a service quality corresponding to a service in a wireless communication network, and have an effect of unifying statistical data including charging.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (8)

A base station for receiving and transmitting an access point name corresponding to a data service to be connected from a mobile communication terminal; A gateway GPRS support node (GGSN) connected to a server corresponding to a service supported by a packet network at each port; And A service quality mapping table storing at least one quality of service corresponding to an access point name, extracting an optimal quality of service corresponding to the access point name from the quality of service mapping table according to a state of a wireless network and a radio resource, And a serving GPRS support node (SGSN) for allocating a radio network and a radio resource as the quality of service. The method of claim 1, When the serving GPRS support node is congested or lacks radio resources, the serving GPRS support node extracts a low service quality corresponding to the access point name from the service quality mapping table and allocates a radio network and radio resources. Mobile communication system to control. The method of claim 1, The quality of service includes traffic class, delivery order, delivery of erroneous service data unit, maximum SDU size, and maximum uplink / downlink bit rate. A mobile communication system for controlling a call quality for each service, which is a combination of at least one or more of a maximum bit rate, a transfer delay, and a traffic handling priority parameter value. The method of claim 1, Access point name is a mobile communication system for controlling the call quality per service corresponding to the data service one-to-one. A service quality control method performed in the serving GPRS support node of a mobile communication system including a base station, a serving GRPS support node, and a gateway GPRS support node, wherein the serving GPRS support node maps one or more quality of service to an access point name. The service quality mapping table that is being stored Receiving a PDP context activation request message from the mobile station, where the PDP context activation request message is received from a mobile terminal; Extracting, from the PDP context activation request message, an access point name including routing information to a server providing a data service; Extracting, from the service quality mapping table, an optimal quality of service corresponding to the access point name according to traffic of a wireless network corresponding to the access point name and a state of a radio resource; Allocating a radio network and a radio resource with the extracted quality of service; And And transmitting a PDP context creation request message to a gateway GPRS support node corresponding to the access point name. The method of claim 5, If the traffic of the wireless network is congested or the radio resource is insufficient, extracting a low quality of service corresponding to the access point name from the quality of service mapping table and allocating a wireless network and radio resources with the extracted low quality of service. More including quality control method. The method of claim 5, And storing an access point name corresponding to a service and a service quality corresponding to the access point name in the service quality mapping table. The method of claim 5, And the access point name is routing information to a port of a gateway GPRS support node connected to an external packet network providing the data service.

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