KR20120094399A - Apparatus and method to provide packet data service in a communication system - Google Patents

Abstract

PURPOSE: An apparatus and method for providing a packet data service in a communication system are provided to provide a packet data service by minimizing the IP(Internet Protocol) address processing load of an HNB(Home Node B). CONSTITUTION: A WCDMA(Wideband Code Division Multiple Access) communication system comprises an UE(User Equipment), home/enterprise networks(310), the internet(320), an IP network(330), a core network(340), and an HMS(HNB Management System)(350). The home/enterprise networks include an HNB(311). The IP network includes a router(331). The core network comprises an HNB gateway(341), a mobile switching center(343), a home location register(345), a serving GPRS(General Packet Radio Service) support node(347), and a gateway GPRS support node(349). The UE is connected to the HNB through a Uu interface. The router is connected to a HNBGW(HNB GateWay) through a luh interface.

Description

Apparatus and method for providing packet data service in mobile communication system {APPARATUS AND METHOD TO PROVIDE PACKET DATA SERVICE IN A COMMUNICATION SYSTEM}

The present invention relates to an apparatus and method for providing a packet data service in a mobile communication system.

A representative example of a mobile communication system is a wideband code division multiple access (WCDMA) communication system, and the WCDMA communication system is a user equipment (UE). UE's are evolving to provide a variety of high-speed, high-capacity services. In particular, in the WCDMA communication system, it is important to service the shadow area in order to increase the overall system capacity and improve the quality of service. In this way, the service of the shadow area is important because it has a very important influence on the service area expansion of the base station (Node B, hereinafter referred to as 'Node B') and the capacity increase of Node B.

Accordingly, in the WCDMA communication system, various methods for servicing the shadow area have been proposed, and a representative method thereof is a relay or repeater using an interface with a macro Node B. ) And femto Node B using the interface with the core network (CN). Here, the femto Node B is a Node B having the smallest size among the proposed Node Bs, a femto cell which is a small communication area of an office, a residential area, a building, etc., which is independent of a general Node B, that is, a macro Node B. A communication service is provided to a small number of UEs existing in an area. That is, the femto Node B not only can service the shadow area but also reduces the load of the macro Node B, thereby increasing the service capacity of a service provider unlike a repeater sharing the capacity of the macro Node B. You can.

In the WCDMA communication system, various methods have been proposed to provide a packet data service, and representative methods include a local network Internet Protocol (IP) connection (LIPA: Local). network IP Access, hereinafter referred to as "LIPA"), and Selective IP Traffic Offload (SIPTO). Next, the LIPA scheme and the SIPTO scheme currently proposed in the WCDMA communication system will be described with reference to FIG. 1.

1 is a diagram schematically illustrating a process of providing a packet data service according to whether a LIPA scheme and a SIPTO scheme are used in a general WCDMA communication system.

Referring to FIG. 1, the WCDMA communication system includes a UE 100, a home / enterprise network 110, an internet 120, an IP network 130, and a core network 140. It includes.

The home / enterprise network 110 includes a femto Node B, or home Node B (HNB: Home Node B, hereinafter referred to as 'HNB') 111. The IP network 130 includes a router 131. The core network 140 is a home Node B gateway (HNBGW: HNB GateWay, hereinafter referred to as 'HNBGW') 141, and a mobile switching center (MSC: hereinafter referred to as 'MSC') ( 143, a Home Location Register (HLR) (hereinafter referred to as HLR) 145, and a Serving General Packet Radio Service (SGSN) Support Node (SGSN). SGSN '147) and a Gateway Packet Radio Service Support Node (GGSN) (hereinafter referred to as' GGSN') 149.

In addition, the UE 100 is connected to the HNB 111 through a Uu interface, and the router 131 is connected to the HNBGW 141 through a luh interface. In addition, the HNBGW 141 is connected to the MSC 143 through a lu-CS (Circuit Service) interface, and is connected to the SGSN 147 through a lu-PS (Packet Service) interface. In addition, the SGSN 147 is connected to the HLR 145 through the Gr interface, and is connected to the GGSN 149 through the Gn interface.

When the LIPA scheme is used in FIG. 1 (LIPA ON), the UE 100 may transmit and receive packet data with a local network device (local device) included in a local network through the HNB 111 ( 150). That is, when the LIPA scheme is used, the UE 100 may be connected to a local network to receive a packet data service.

In addition, when the SIPTO scheme is used in FIG. 1 (SIPTO ON), the UE 100 transmits an external network, that is, a packet domain network and a packet, through the HNB 111 and the router 131. Data may be transmitted and received (160). That is, when the SIPTO scheme is used, the UE 100 may be provided with a packet data service by accessing an external network without going through a mobile communication network, that is, a core network.

In addition, in FIG. 1, when the SIPTO scheme is not used (SIPTO OFF), the UE 100 may connect the HNB 111, the router 131, the HNBGW 141, the SGSN 147, and the GGSN. In operation 149, packet data may be transmitted and received with the external network. That is, when the SIPTO scheme is not used, the UE 100 may be provided with a packet data service by accessing an external network through a core network.

In FIG. 1, a process of providing a packet data service according to whether a LIPA scheme and a SIPTO scheme is used in a general WCDMA communication system has been described. Next, referring to FIG. This will be described.

2 is a diagram schematically showing data traffic load of a core network in a typical WCDMA communication system.

Referring to FIG. 2, the WCDMA communication system includes a UE 200, a UE 250, a home / enterprise network 210, an Internet 220, an IP network 230, a core network 240, and the like. Node B 260 and a Radio Network Controller (RNC) 270. Here, the Node B 260 is a macro Node B.

The home / enterprise network 210 includes an HNB 211. The IP network 230 includes a router 231. The core network 240 includes an HNBGW 241, an MSC 243, an HLR 245, an SGSN 247, and a GGSN 249.

In addition, the UE 200 is connected to the HNB 211 through a Uu interface, and the router 231 is connected to the HNGW 241 through a luh interface. In addition, the HNBGW 241 is connected to the MSC 243 through the lu-CS interface, and is connected to the SGSN 247 through the lu-PS interface. In addition, the SGSN 247 is connected to the HLR 245 through the Gr interface, and is connected to the GGSN 249 through the Gn interface.

Then, the data traffic generated by the UE 200 and the UE 250 will be described below.

First, the data traffic generated by the UE 200 will be described.

First, when the packet data is generated, the UE 200 transmits the generated packet data to the HNB 211. The HNB 211 transmits the packet data received from the UE 200 to the router 231. The router 231 transmits the packet data received from the HNB 211 to the HNBGW 241. The HNBGW 241 transmits the packet data received from the router 231 to the SGSN 247. The SGSN 247 transmits the packet data received from the HNBGW 241 to the GGSN 249. The GGSN 249 transmits the packet data received from the SGSN 247 to an external network.

Secondly, the data traffic generated by the UE 250 will be described.

First, when the packet data is generated, the UE 250 transmits the generated packet data to the Node B 260. The Node B 260 transmits the packet data received from the UE 250 to the RNC 270. The RNC 270 transmits the packet data received from the Node B 260 to the SGSN 247. The SGSN 247 transmits the packet data received from the RNC 270 to the GGSN 249. The GGSN 249 transmits the packet data received from the SGSN 247 to an external network.

As described above, the packet data generated in the femto Node B, that is, the HNB 211, and the packet data generated in the macro Node B, that is, the Node B 260, are processed together in the core network 240. That is, the packet data generated at the HNB 211 and the packet data generated at the Node B 260 are processed together by the SGSN 247 and the GGSN 249.

As a result, the core network 240 processes the packet data generated in the Node B 260 as well as the HNB 211, so that the data traffic load of the core network 240 is the HNB 211 and the Node B. The data traffic load of 260 is summed and determined.

As described above, the current WCDMA communication system is actively considering the use of femto Node B to increase the overall system capacity and improve the quality of service.

However, as described above, when the femto Node B is used, the data traffic generated in the femto Node B is processed in the core network together with the data traffic generated in the macro Node B, thereby increasing the data traffic load of the core network. Can be.

In particular, as the number of UEs providing services in the macro Node B and the number of UEs providing services in the femto Node B increase, data traffic also increases. In this case, data traffic jams due to the increase of the data traffic. This can happen. The occurrence of such data traffic jams results in a load on the core network, in which case the core network may not provide packet data service itself or even provide packet data service. Quality of Service may not be guaranteed.

As such, representative methods for distributing the data traffic load of the core network are the LIPA method and the SIPTO method described above. However, as described above, in the current WCDMA communication system, the LIPA scheme defines only the concept that the UE can transmit / receive packet data to and from the local network through the femto Node B, and only the degree of requirements thereof, and the SIPTO scheme. It only defines that the UE can send and receive packet data to and from the external network through the femto Node B and the router without using a mobile communication network, and generates data traffic of the macro Node B and femto Node B and data traffic of the core network. The load is briefly defined as a scenario.

In addition, a service provider generally wants to remotely manage a femto Node B for various reasons such as a change in a data model. Therefore, in the current WCDMA communication system, a service provider (OAM: Operations, Administration and Maintenance (OAM)) has been proposed for a service provider to remotely manage the femto Node B.

However, the OAM method currently proposed in the WCDMA communication system only describes the degree of requirement that the service provider should be able to control the LIPA method and the SIPTO method, and specifically, how the service provider can control the LIPA method and the SIPTO method. It does not describe at all whether it can.

An embodiment of the present invention proposes an apparatus and method for providing a packet data service in a mobile communication system.

Another embodiment of the present invention proposes an apparatus and method for providing a packet data service by allocating only one IP address to a UE in a mobile communication system.

Another embodiment of the present invention proposes an apparatus and method for providing a packet data service without changing a control plane.

Another embodiment of the present invention proposes an apparatus and method for providing a packet data service by minimizing an IP address processing load of an HNB.

Another embodiment of the present invention proposes an apparatus and method for providing a packet data service by distributing a data traffic load in a mobile communication system.

Another embodiment of the present invention proposes an apparatus and method for providing a packet data service to enable an HNB Management System (HMS) to control an HNB in a mobile communication system.

The apparatus proposed in the embodiment of the present invention; In a Home Node B (HNB) Management System (HMS) in a mobile communication system, a local network Internet protocol connection (LIPA: Local Network IP) of a user equipment (UE) from an HNB. (Access) method and a receiving unit receiving a LIPA / SIPTO method use status report message indicating a status of using the Selective IP Traffic Offload (SIPTO) method and whether the LIPA method and the SIPTO method are used for the UE. A control unit for detecting that a change is necessary, and a transmitting unit for sending a LIPA / SIPTO method use change request message indicating to change whether to use the LIPA method and the SIPTO method for the UE to the HNB.

The apparatus proposed in another embodiment of the present invention; In a home base station (HNB) in a mobile communication system, a local network Internet protocol access (LIPA) of a user equipment (UE) to an HNB management system (HMS) is performed. (Access) method and a sending unit for transmitting a LIPA / SIPTO method use status report message indicating a selective IP traffic offload (SIPTO) use status, a LIPA method and a SIPTO for the UE from the HMS; A receiving unit for receiving a LIPA / SIPTO method usage change request message indicating whether to change whether to use the method or a control unit for changing whether to use the LIPA method and SIPTO method to the UE according to the LIPA / SIPTO method usage change request message; Include.

The apparatus proposed in another embodiment of the present invention; In a home base station (HNB) in a mobile communication system, a reception unit for receiving packet data from a user terminal (UE) and a target device targeted by the packet data are local networks. If the device is a device, processing the packet data according to whether a local network IP (Access Protocol) (LIPA) method usage is set for the UE; and the target device is an external network device. In one case, it includes a control unit for controlling to perform the operation of processing the packet data in accordance with whether or not the use of the Selective IP Traffic Offload (SIPTO) scheme is set in the UE.

The apparatus proposed in another embodiment of the present invention; In a home base station (HNB) in a mobile communication system, a reception unit for receiving packet data in which a user equipment (UE) is a target device from a router, and a source for transmitting the packet data (source) if the device is a local network device, processing the packet data according to whether the local network IP (Access Protocol) (LIPA) method usage is set for the UE; If the source device is an external network device, controlling to perform an operation of processing the packet data according to whether the use of a Selective IP Traffic Offload (SIPTO) scheme is set in the UE; It includes a unit.

The method proposed in the embodiment of the present invention; A method of providing a packet data service of a Home Node B (HNB) Management System (HMS) in a mobile communication system, comprising: Local Network Internet Protocol Connection (LIPA) of a User Equipment (UE) from an HNB After receiving the status report of the Local network IP (Internet Protocol) Access (SIPTO) method and the Selective IP Traffic Offload (SIPTO) method usage status, the LIPA method and the SIPTO method usage status is reported, and then to the UE Detecting whether it is necessary to change whether to use the LIPA method and the SIPTO method, and requesting the HNB to change whether to use the LIPA method and the SIPTO method to the UE.

In another embodiment of the present invention the method proposed; In the method of providing a packet data service of a home base station (HNB) in a mobile communication system, a local network Internet protocol connection (LIPA) of a user equipment (UE) to an HNB management system (HMS) Reporting a status of using a Local network IP (Internet Protocol) (IP) method and a Selective IP Traffic Offload (SIPTO) method; and reporting a status of using the LIPA method and the SIPTO method, and then from the HMS. And requesting to change the use of the LIPA method and the SIPTO method for the UE, and changing the use of the LIPA method and the SIPTO method of the UE according to the request for changing the use of the LIPA method and the SIPTO method.

In another embodiment of the present invention the method proposed; A method of providing a packet data service of a home base station (HNB) in a mobile communication system, the method comprising: receiving packet data from a user equipment (UE) and a target device to which the packet data is targeted if the device is a local network device, processing the packet data according to whether a local network IP (Access Protocol) (LIPA) method usage is set for the UE; If the device is an external network device, processing the packet data according to whether the use of a Selective IP Traffic Offload (SIPTO) scheme is set in the UE.

In another embodiment of the present invention the method proposed; A method of providing a packet data service of a home base station (HNB) in a mobile communication system, the method comprising: receiving packet data in which a user equipment (UE) is a target device from a router; If the source device that transmitted the data is a local network device, the packet data is transmitted according to whether the local network IP (Access Protocol) (LIPA) method is set to the UE. Processing the packet data according to whether the source device is an external network device or whether the selective IP traffic offload (SIPTO) scheme is set for the UE. Include.

The present invention has the effect of enabling the mobile communication system to provide packet data service by allocating only one IP address to the UE.

In addition, since the present invention can provide the packet data service by allocating only one IP address to the UE, the present invention not only makes it possible to provide the packet data service without changing the control plan, but also the IP address processing load of the HNB. It is effective to minimize the cost and to provide a packet data service.

In addition, the present invention has the effect that it is possible to prevent the load on the core network by making it possible to provide a packet data service by distributing the data traffic load in the mobile communication system.

In addition, the present invention provides a femto Node B of a service provider by providing a packet data service to enable an HNB management system (HMS: HMS) to control a femto Node B in a mobile communication system. This has the effect of enabling remote access management.

In addition, the present invention enables the HMS to remotely control whether the femto Node B uses the LIPA method / SIPP method in the mobile communication system to adaptively control whether to use the LIPA / SIPP method according to the service provider's needs There is an effect.

1 is a diagram schematically illustrating a process of providing a packet data service according to whether a LIPA scheme and a SIPTO scheme are used in a general WCDMA communication system.
2 is a diagram schematically showing data traffic load of a core network in a typical WCDMA communication system.
3 is a diagram schematically showing the structure of a WCDMA communication system according to an embodiment of the present invention;
4 is a signal flow diagram illustrating a process of controlling the use of a LIPA scheme and a SIPTO scheme for a specific UE between an HNB and an HMS in a WCDMA communication system according to an embodiment of the present invention.
5 is a flowchart illustrating an operation process of the HNB 400 of FIG. 4.
FIG. 6 is a flowchart illustrating an operation process of the HMS 450 of FIG. 4.
7 is a signal flow diagram schematically illustrating a process of setting up a data session for providing a packet data service in a WCDMA communication system according to an embodiment of the present invention.
8 is a signal flow diagram illustrating a packet data service providing process when a UE transmits packet data to a local network device in a WCDMA communication system according to an embodiment of the present invention.
9 is a signal flow diagram illustrating a packet data service providing process when a UE receives packet data from a local network device in a WCDMA communication system according to an embodiment of the present invention.
10 is a signal flow diagram illustrating a packet data service providing process when a UE transmits packet data to an external network device in a WCDMA communication system according to an embodiment of the present invention.
11 is a signal flow diagram illustrating a packet data service providing process when a UE receives packet data from an external network device in a WCDMA communication system according to an embodiment of the present invention.
12 is a flowchart illustrating a process in which a HNB transmits packet data transmitted by a UE to a target device in a WCDMA communication system according to an embodiment of the present invention.
FIG. 13 is a flowchart illustrating a process in which a HNB transmits packet data received by a HNB as a target device to a UE in a WCDMA communication system according to an embodiment of the present invention.
14 schematically illustrates the internal structure of an HNB in a WCDMA communication system according to an embodiment of the present invention.
FIG. 15 schematically illustrates an internal structure of an HMS in a WCDMA communication system according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

An embodiment of the present invention proposes an apparatus and method for providing a packet data service in a mobile communication system.

In addition, in another embodiment of the present invention, one Internet Protocol (IP) is referred to as a user terminal (UE) in a mobile communication system (hereinafter referred to as UE). An apparatus and method for providing a packet data service by allocating only an address is provided.

In addition, another embodiment of the present invention proposes an apparatus and method for providing a packet data service without changing a control plane.

In addition, another embodiment of the present invention proposes an apparatus and method for providing a packet data service by minimizing the IP address processing load of a home base station (HNB: Home Node B, hereinafter referred to as 'HNB'). do.

Further, another embodiment of the present invention proposes an apparatus and method for providing a packet data service by distributing a data traffic load in a mobile communication system.

In another embodiment of the present invention, an apparatus and method for providing a packet data service to enable an HNB management system (HMS) to control an HNB in a mobile communication system Suggest. Here, the HNB denotes a femto base station (Node B, hereinafter referred to as 'Node B').

In another embodiment of the present invention, in the mobile communication system, the HMS uses a Local Network IP Access (LIPA) method and an optional IP traffic offload (SIPTO) of the HNB. An apparatus and method for providing a packet data service by controlling the use of an IP Traffic Offload (hereinafter referred to as a SIPTO) scheme are provided.

Hereinafter, in describing embodiments of the present invention, it is assumed that a mobile communication system is a wideband code division multiple access (WCDMA) communication system, for example. In addition to communication systems, Code Division Multiple Access (CDMA) communication systems, 3rd Generation Partnership Project (3GPP) Long-Term Evolution (LTE) communication systems, and IEEE (Institute) Other mobile communication systems, such as the 802.16 communication system of Electrical and Electronics Engineers, and the Mobile Interoperability for Microwave Access (WiMAX) communication system.

3 is a diagram schematically illustrating a structure of a WCDMA communication system according to an embodiment of the present invention.

Referring to FIG. 3, the WCDMA communication system includes a UE 300, a Home / Enterprise Network 310, an Internet 320, and an Internet Protocol (“IP”). A network 330, a core network (CN) 340, and an HMS 350 are included.

The home / enterprise network 310 includes an HNB 311. The IP network 330 includes a router 331. The core network 340 includes an HNB gateway (HNBGW: HNB GateWay, hereinafter referred to as 'HNBGW') 341, and a mobile switching center (MSC), hereinafter referred to as 'MSC' (343). And a home location register (HLR: hereinafter referred to as 'HLR') 345, and a Serving General Packet Radio Service (SGSN) Support Node (SGSN). 347 and a Gateway Packet Radio Service Support Node (GGSN) (hereinafter referred to as 'GGSN') 349.

In addition, the UE 300 is connected to the HNB 311 through a Uu interface, and the router 331 is connected to the HNBGW 341 through a luh interface. In addition, the HNBGW 341 is connected to the MSC 343 through a lu-CS (Circuit Service) interface, and is connected to the SGSN 347 through a lu-PS (Packet Service) interface. In addition, the SGSN 347 is connected to the HLR 345 through a Gr interface, and is connected to the GGSN 349 through a Gn interface.

In FIG. 3, when a Local Network Internet Protocol (IP) connection (LIPA: Local Network IP Access, hereinafter referred to as "LIPA") scheme is used (LIPA ON), the UE is used. 300 may transmit and receive packet data with a local device included in a local network through the HNB 311 (360). That is, when the LIPA scheme is used, the UE 300 may be connected to a local network to receive a packet data service.

In addition, when the Selective IP Traffic Offload (SIPTO) method is used in FIG. 3 (SIPTO ON), the UE 300 may connect the HNB 311 and the router 331. In operation 370, packet data may be transmitted and received with an external network, that is, a packet domain network. That is, when the SIPTO scheme is used, the UE 300 may be provided with a packet data service by accessing an external network without going through a mobile communication network, that is, a core network.

In addition, in FIG. 3, when the SIPTO scheme is not used (SIPTO OFF), the UE 300 includes the HNB 311, the router 331, the HNBGW 341, the SGSN 347, and the GGSN. In operation 380, packet data may be transmitted and received to and from the external network. That is, when the SIPTO scheme is not used, the UE 300 may be provided with a packet data service by accessing an external network through a core network.

In addition, in FIG. 3, the HMS 350 is connected to the HNB 311, and enables a service provider to control the HNB 311. That is, the HMS 350 may control the use of the LIPA method and the SIPTO method of the HNB 311. In particular, the HMS 350 receives a Packet Data Protocol (PDP) Context Activated Connection (Activate PDP Context Accept, hereinafter called `` Activate PDP Context Accept '') message. Size of the service quality unit (QoS) (hereinafter referred to as "QoS") service data unit (SDU: Service Data Unit, hereinafter referred to as "SDU") and the error rate ( error rate, traffic class, delay value, and the like can be read.

In addition, although FIG. 3 illustrates that the HMS 350 is only connected to the HNB 311 and is not included in a separate network, the HMS 350 may be included in the core network 340. Of course, the core network 340 may be included in a separate external network. That is, if only the communication with the HNB 311 is possible, the HMS 350 may perform the operation regardless of whether it is included in any network.

3 illustrates a structure of a WCDMA communication system according to an embodiment of the present invention. Next, in the WCDMA communication system according to an embodiment of the present invention, a LIPA scheme and a SIPTO for a specific UE between an HNB and an HMS are described with reference to FIG. 4. The process of controlling the use of the method will be described.

4 is a signal flow diagram illustrating a process of controlling the use of a LIPA scheme and a SIPTO scheme for a specific UE between an HNB and an HMS in a WCDMA communication system according to an embodiment of the present invention.

Referring to FIG. 4, first, the HNB 400 detects a LIPA / SIPTO method usage status for a specific UE (step 411), and then reports a LIPA / SIPTO method usage status report message indicating the detected LIPA / SIPTO method usage status. Transmit to HMS 450 (step 413). Here, the LIPA / SIPTO method usage status report message includes a UE identifier (ID) of the UE, hereinafter referred to as 'ID', a LIPA / SIPTO method usage status indicator, and a QoS parameter. .

The LIPA / SIPTO method use state indicator may be embodied as 2 bits, for example. A preceding 1 bit of the 2 bits indicates a LIPA method use state, and the remaining 1 bit indicates a SIPTO method use state. For example, when the LIPA / SIPTO method usage status indicator indicates '11', it indicates that the HNB 400 uses both the LIPA method and the SIPTO method for the UE. In case of indicating '10', the HNB 400 indicates that the LIPA scheme is used for the UE and the SIPTO scheme is not used, and when the LIPA / SIPTO usage scheme status indicator indicates '01', the HNB ( The 400 indicates that the LIPA scheme is not used for the UE and the SIPTO scheme is used, and when the LIPA / SIPTO scheme usage status indicator indicates '00', the HNB 400 indicates that the LIPA is to the UE. It indicates that neither scheme and SIPTO scheme are used.

The QoS parameter also includes an SDU size, an error rate, a traffic class, and a delay value applied to the UE. Upon receiving the LIPA / SIPTO method usage status report message from the HNB 400, the HMS 450 determines whether to use the LIPA method applied to the UE by the HNB 400, whether to use the SIPTO method, and the QoS parameters. Able to know.

On the other hand, if the HMS 450 detects the need to change whether to use the LIPA method and the SIPTO method for the UE (step 415), the HNB 400 to change whether to use the LIPA method and the SIPTO method for the UE. The LIPA / SIPTO method usage change request message is transmitted (step 417). In this case, the HMS 450 considers the number of UEs joined to the HNB 400, various parameters such as traffic policy, handover, and the like. It may be detected that a change in the use of the SIPTO method is required. In addition, the LIPA / SIPTO method use change request message includes a LIPA / SIPTO method use change indicator. Here, the LIPA / SIPTO method use change indicator may be implemented as 2 bits, for example, a preceding 1 bit of the 2 bits indicates to change whether to use the LIPA method, the remaining 1 bit indicates whether to use the SIPTO method. Indicates that you want to change.

For example, when the LIPA / SIPTO usage change indicator indicates '11', this indicates that the UE instructs to use both the LIPA scheme and the SIPTO scheme. The LIPA / SIPTO usage change indicator indicates '10'. In this case, the LIPA method is used for the UE, and the SIPTO method is not used. When the LIPA / SIPTO usage mode change indicator indicates '01', the LIPA method is not used for the UE, and the SIPTO method is not used. The method indicates to use, and when the LIPA / SIPTO method use change indicator indicates '00', it indicates to the UE not to use both the LIPA method and the SIPTO method.

The HNB 400 that receives the LIPA / SIPTO method usage change request message from the HMS 450 corresponds to the LIPA / SIPTO method usage change indicator included in the LIPA / SIPTO method usage change request message for the UE. Change whether to use the LIPA / SIPTO method (step 419).

In this way, the HNB 400 that has changed the use of the LIPA / SIPTO method applied for the UE may transmit a LIPA / SIPTO method use change response message indicating that the LIPA / SIPTO method used for the UE has been changed. 450) (step 421).

Meanwhile, the LIPA / SIPTO method use control process described in FIG. 4 may be performed immediately after the UE joins the HNB, or may be performed according to the needs of the UE and the HNB, or may be performed periodically.

In addition, in FIG. 4, the LIPA / SIPTO method usage control process for a specific UE has been described as an example of being initiated by the HNB 400 (HNB initiated). Of course, it may be initiated by (HMS) initiated by (450). As such, when the LIPA / SIPTO scheme usage control process for a specific UE is initiated by the HMS 450, the HMS 450 may report the LIPA / SIPTO scheme usage status for the specific UE to the HNB 400. For example, a message for requesting transmission, for example, a LIPA / SIPTO method usage status report request message, and the HNB 450 may perform operation 411 according to the LIPA / SIPTO method usage status report request message.

In FIG. 4, a process of controlling the use of a LIPA scheme and a SIPTO scheme for a specific UE between the HNB and the HMS in the WCDMA communication system according to an embodiment of the present invention has been described. Next, the HNB (FIG. 4) of FIG. An operation process of 400 will be described.

5 is a flowchart illustrating an operation process of the HNB 400 of FIG. 4.

Referring to FIG. 5, first, in step 511, the HNB 400 detects a LIPA / SIPTO scheme usage state for a specific UE and proceeds to step 513. In step 513, the HNB 400 transmits a LIPA / SIPTO type usage status report message indicating the detected LIPA / SIPTO type usage status to the HMS 450, and proceeds to step 515. Here, the LIPA / SIPTO method usage status report message includes a UE ID of the UE, a LIPA / SIPTO method usage status indicator, and a QoS parameter. In step 515, the HNB 400 receives the LIPA / SIPTO method use change request message from the HMS 450 and proceeds to step 517.

In step 517, the HNB 400 changes whether to use the LIPA / SIPTO method applied to the UE according to the LIPA / SIPTO method use change indicator included in the LIPA / SIPTO method use change request message. Proceed to In step 519, the HNB 400 transmits to the HMS 450 a LIPA / SIPTO method usage change response message indicating that the LIPA / SIPTO method usage change applied to the UE is changed and ends.

In FIG. 5, an operation process of the HNB 400 of FIG. 4 has been described. Next, an operation process of the HMS 450 of FIG. 4 will be described with reference to FIG. 6.

FIG. 6 is a flowchart illustrating an operation of the HMS 450 of FIG. 4.

Referring to FIG. 6, in operation 611, the HMS 450 receives a LIPA / SIPTO method usage status report message indicating a LIPA / SIPTO method usage status for a specific UE from the HNB 400 and proceeds to step 613. Here, the LIPA / SIPTO method usage status report message includes a UE ID of the UE, a LIPA / SIPTO method usage status indicator, and a QoS parameter. In step 613, the HMS 450 detects the need to change whether to use the LIPA method and the SIPTO method for the UE, and proceeds to step 615. Here, the HMS 450 detects the necessity of changing whether to use the LIPA / SIPTO scheme for the UE in consideration of various parameters such as the number of UEs joined to the HNB 400, a traffic policy, and a handover. can do. In step 615, the HMS 450 transmits a LIPA / SIPTO method usage change request message requesting the HNB 400 to change whether to use the LIPA method and the SIPTO method for the UE, and proceeds to step 617. In step 617, the HMS 450 receives and terminates a LIPA / SIPTO method usage change response message indicating that the LIPA / SIPTO method used for the UE has been changed from the HNB 400.

In FIG. 6, the operation of the HMS 450 of FIG. 4 has been described. Next, a data session is set up to provide a packet data service in a WCDMA communication system according to an embodiment of the present invention with reference to FIG. 7. The setup process will be described.

7 is a signal flow diagram schematically illustrating a process of setting up a data session for providing a packet data service in a WCDMA communication system according to an embodiment of the present invention.

Referring to FIG. 7, the UE 700 transmits a PDP context activation request (hereinafter referred to as an 'Activate PDP Context Request') message to the HNB 710 to join the packet domain network ( Step 711). Here, the Activate PDP Context Request message includes a protocol discriminator (hereinafter referred to as a "protocol discriminator"), a QoS, a PDP address, a protocol configuration option (hereinafter referred to as "protocol"). Configuration Options').

The Protocol Discriminator indicates General Packet Radio Service (GPRS) session management messages (GPRS), and thus includes a GPRS session management message type. In addition, the QoS indicates a requested QoS (QoS) requested by the UE 700, and includes a QoS delay class, a traffic class, a maximum SDU size and a maximum SDU size. And a residual bit error rate (BER). In addition, the PDP address indicates a requested PDP address, and the PDP type number indicates an IP version 4 (IPv4, hereinafter 'IPv4') address. In addition, the Protocol Configuration Option includes an authentication request (Authenticate-request, hereinafter referred to as "Authenticate-request") and an IP Configuration request (hereinafter referred to as "IP Configuration request"). Here, the Authenticate-request includes a password, and the IP Configuration request includes a Domain Name System (DNS).

After receiving the Activate PDP Context Request message from the UE 700, the HNB 710 transmits an Activate PDP Context Request message to the HNBGW 730 through the router 720 (step 713). After receiving the Activate PDP Context Request message from the HNB 710, the HNBGW 730 transmits an Activate PDP Context Request message to the SGSN 740 (step 715). The SGSN 740 that receives the Activate PDP Context Request message from the home HNBGW 730 generates a PDP context to the GGSN 750 using the GPRS Tunneling Protocol (GTP). A request (Create PDP context request, hereinafter called 'Create PDP context request') message is transmitted (step 717).

In addition, the SGSN 740 transmits a Create PDP context request message to the GGSN 750 and then uses the Radio Access Network Application Part (RANAP) protocol. In step 719, a radio bearer allocation procedure for allocating a radio bearer to a UE 700 having transmitted an Activate PDP Context Request message to the HNB 710 is performed. Here, the radio bearer allocation procedure will now be described.

First, when the SGSN 740 receives an Activate PDP Context Request message from the HNBGW 730, the SGSN 740 requests a radio access bearer (RAB) assignment to the HNBGW 730. (RAB Assignment Request, hereinafter referred to as 'RAB Assignment Request') Send a message. The HNBGW 730 that receives the RAB Assignment Request message from the SGSN 740 transmits a RAB Assignment Request message to the HNB 710. Upon receiving the RAB Assignment Request message from the HNBGW 730, the HNB 710 transmits a RAB Assignment Request message to the UE 700. After receiving the RAB Assignment Request message from the HNB 710, the UE 700 sets up the RAB, and then responds to the RAB Assignment Request message to the HNB 710, and the UE 700 sets up the RAB. A RAB Assignment Response (hereinafter, referred to as a 'RAB Assignment Response') message is transmitted.

After receiving the RAB Assignment Response message from the UE 700, the HNB 710 transmits a RAB Assignment Response message to the HNBGW 730 through the router 720. Upon receiving the RAB Assignment Response message, the HNBGW 730 transmits a RAB Assignment Response message to the SGSN 740. Upon receiving the RAB Assignment Response message from the HNBGW 730, the SGSN 740 recognizes that the UE 700 has set up the RAB.

Meanwhile, the GGSN 750 which has received the Create PDP Context Request message from the SGSN 740 sends a PDP context response (Create PDP Context Response, hereinafter ') to the SGSN 740 as a response message to the Create PDP Context Request message. Create PDP Context Response ') is transmitted (step 721). The Create PDP Context Response message includes a message type, an end user address, a Protocol Configuration Option, a Gigabyte System Network (GSN) address, and QoS. And a charging gateway address. Here, the end user address represents an Internet Engineering Task Force (IETF) / IPv4 address. In FIG. 7, it is assumed that the user end address, that is, the PDP address is '61 .XXX.10.101 '.

Meanwhile, the SGSN 740 that receives the Create PDP Context Response message from the GGSN 750 transmits an Activate PDP Context Accept message to the HNBGW 730 (step 723). Here, the Activate PDP Context Accept message includes a request QoS, a PDP address, and a Protocol Configuration Option. Upon receiving the Activate PDP Context Accept message, the SGSN 740 transmits an Activate PDP Context Accept message to the HNB 710 via the router 720 (step 725). Upon receiving the Activate PDP Context Accept message, the HNB 710 performs a local IP address allocation procedure with the router 720 (step 727). Here, the local IP address represents an IP address assigned by the router.

Meanwhile, a local IP address allocation procedure performed between the HNB 710 and the router 720 will be described below.

First, the HNB 710 sends an IP address allocation request (hereinafter, referred to as an 'IP Address Allocation Request') message requesting the router 720 to allocate the IP address to the UE 700. Send. The router 720 receiving the IP Address Allocation Request message allocates an IP address for the UE 700 and assigns an IP address including an IP address allocated to the HNB 710 for the UE 700. A response (IP Address Allocation Response, hereinafter referred to as 'IP Address Allocation Response') message is transmitted. In FIG. 7, it is assumed that the IP address allocated by the router 720 to the UE 700 is '192.168.XXX.51'.

As described above, the HNB 710 performing the local IP address allocation procedure with the router 720 may know the IP address assigned by the router 720 to the UE 700. As such, the HNB 710 that detects the IP address assigned by the router 720 to the UE 720 may include the IP address and the GGSN 750 assigned by the router 720 to the UE 700. The IP address allocated to the UE 700 is mapped and stored in a look-up table. Here, the lookup table is as shown in Table 1 below.

State Assigned IP by GGSN Assigned IP by Local Network Active Mode 61.XXX.10.101 192.168.XXX.51

In Table 1, State indicates an operating state of the UE 700, and the operating state of the UE 700 includes an active mode and an idle mode, and Table 1 shows an active mode. Only is described. In addition, in Table 1, Assigned IP by GGSN indicates an IP address assigned by the GGSN 750 to the UE 700, and Assigned IP by Local Network indicates an IP address assigned by the router 720 to the UE 700. Indicates. As described above, the HNB 710 performing the local IP address allocation procedure with the router 720 transmits an Activate PDP Context Accept message including the IP address assigned to the UE 700 to the UE 700. (Step 729). The UE 700 receiving the Activate PDP Context Accept message from the HNB 710 is called an IP address included in the Activate PDP Context Accept message, that is, a PDP address and an IP configuration. Using the information, an access point name (APN: Access Point Name, hereinafter referred to as 'APN') is set up (step 731). When the above-described steps 711 to 731 are performed, a data session for the UE 700 is set up, so that the UE 700 transmits packet data to the local network or the core network, or the local network. Alternatively, the packet data can be received from the core network.

In FIG. 7, a process of setting up a data session for providing a packet data service in a WCDMA communication system according to an embodiment of the present invention has been described. Next, a UE in a WCDMA communication system according to an embodiment of the present invention will be described with reference to FIG. 8. A process of providing a packet data service when a packet is transmitted to a local network device will be described.

8 is a signal flowchart illustrating a packet data service providing process when a UE transmits packet data to a local network device in a WCDMA communication system according to an embodiment of the present invention.

Before describing FIG. 8, it is assumed that the data session for the UE 800 has already been set up.

Referring to FIG. 8, first, the UE 800 transmits packet data targeting the local network device 860 to the HNB 810 (step 811). Here, the packet data transmitted by the UE 800 includes a source IP address and a destination IP address, and the source IP address is a GGSN 850 when the UE 800 performs a data session setup procedure. IP address, i.e., PDP address, denotes an IP address, i.e., a local IP address, assigned by the local network device 860 from the router 820. Upon receiving packet data from the UE 800, the HNB 810 checks whether LIPA scheme usage is set for the UE 800 (step 813). When the LIPA method usage is set for the UE 800 as a result of the checking, the HNB 810 uses a lookup table to determine the source IP address included in the packet data by the UE 800 through the router 820. After changing to the local IP address assigned from the step (815) and transmits to the local network device 860 via the router 820 (step 817, step 819). If the use of the LIPA method is not set, the HNB 810 terminates the packet data transmission (step 821) because the packet data transmission is impossible.

FIG. 8 illustrates a process of providing a packet data service when a UE transmits packet data to a local network device in a WCDMA communication system according to an embodiment of the present invention. Next, an embodiment of the present invention will be described with reference to FIG. In the WCDMA communication system according to the present invention, a process of providing a packet data service when a UE receives packet data from a local network device will be described.

9 is a signal flowchart illustrating a packet data service providing process when a UE receives packet data from a local network device in a WCDMA communication system according to an embodiment of the present invention.

Before describing FIG. 9, it is assumed that the data session for the UE 900 has already been set up.

Referring to FIG. 9, the HNB 910 receives packet data targeting the UE 900 from the local network device 960 through the router 920, that is, a destination IP address is a local IP address of the UE 900. Receive packet data (steps 911 and 913). The router 920 checks whether LIPA scheme usage is set for the UE 900 (step 915). When the LIPA method usage is set for the UE 900 as a result of the check, the HNB 910 uses a lookup table to determine the destination IP address included in the packet data by the UE 900 in the GGSN 950. The PDP address is changed to the allocated PDP address from step 917 and then transmitted to the UE 900 (step 919).

On the other hand, if the LIPA method is not set for the UE 900 as a result of the check, the HNB 910 cannot receive the packet data and thus ends the packet data reception (step 921).

FIG. 9 illustrates a process of providing a packet data service when a UE receives packet data from a local network device in a WCDMA communication system according to an embodiment of the present invention. Next, an embodiment of the present invention will be described with reference to FIG. In the WCDMA communication system according to the present invention, a packet data service providing process when a UE transmits packet data to an external network device will be described.

10 is a signal flow diagram illustrating a packet data service providing process when a UE transmits packet data to an external network device in a WCDMA communication system according to an embodiment of the present invention.

Before describing FIG. 10, it is assumed that the data session for the UE 1000 is already set up.

Referring to FIG. 10, first, the UE 1000 transmits packet data targeting the external network device 1060 to the HNB 1010 (step 1011). Here, the packet data transmitted by the UE 1000 includes a source IP address and a destination IP address, and the source IP address is an IP address allocated by the UE 1000 from the GGSN 1050 when performing a data session setup procedure. In other words, it represents a PDP address, and the destination IP address represents an IP address, that is, a PDP address assigned by the external network device 1060 from the GGSN 1050. Upon receiving packet data from the UE 1000, the HNB 1010 checks whether the SIPTO scheme is set for the UE 1000 (step 1013). When using the SIPTO scheme for the UE 1000 as a result of the check, the HNB 1010 uses a lookup table to determine the source IP address included in the packet data by the UE 1000 through the router 1020. After changing to the local IP address assigned from the step (1015) and transmits to the external network device 1060 through the router 1020 (step 1017).

On the other hand, when the use of the SIPTO scheme is not set for the UE 1000 as a result of the check, the HNB 1010 performs a GTP tunneling procedure with the GGSN 1050 (step 1019) to transmit the packet data to the external network. Transmit to device 1060 (step 1021).

FIG. 10 illustrates a process of providing a packet data service when a UE transmits packet data to an external network device in a WCDMA communication system according to an embodiment of the present invention. Next, an embodiment of the present invention will be described with reference to FIG. In the WCDMA communication system according to the present invention, a process of providing a packet data service when a UE receives packet data from an external network device will be described.

11 is a signal flow diagram illustrating a packet data service providing process when a UE receives packet data from an external network device in a WCDMA communication system according to an embodiment of the present invention.

Before describing FIG. 11, it is assumed that the data session for the UE 1100 is already set up.

Referring to FIG. 11, the HNB 1110 uses the router 1120 to send packet data targeting the UE 1100 from an external network device 1160, that is, a destination IP address to a local IP address of the UE 1100. Receive packet data (steps 1111 and 1113). The router 1120 checks whether the SIPTO scheme usage is set for the UE 1100 (step 1115). When the use of the SIPTO scheme is set for the UE 1100 as a result of the check, the HNB 1110 uses a lookup table to determine the destination IP address included in the packet data by the UE 1100 in the GGSN 1150. The PDP address is changed from the allocated PDP address to the UE 1100 and then transmitted to the UE 1100 (step 1119).

On the other hand, when the use of the SIPTO scheme is not set for the UE 1100, the HNB 1110 transmits the packet data to the UE 1100 after GTP termination (step 1121) (step 1123). ).

As described with reference to FIGS. 7 to 11, when transmitting and receiving packet data, the UE may transmit and receive packet data without changing a control plane even if only one IP address is allocated. As such, since the UE can transmit and receive packet data even if only one IP address is assigned, the time required for the HNB to process the IP address of the UE can be minimized.

Next, a process of transmitting packet data transmitted by the UE to the target device in the WCDMA communication system according to the embodiment of the present invention will be described with reference to FIG. 12.

12 is a flowchart illustrating a process of transmitting packet data transmitted by a UE to a target device in a WCDMA communication system according to an embodiment of the present invention.

Before describing FIG. 12, it is assumed that the data session for the UE has already been set up.

Referring to FIG. 12, in step 1211, the HNB receives packet data from a UE and proceeds to step 1213. In step 1213, the HNB checks the destination IP address of the packet data received from the UE and checks whether the target device of the packet data received from the UE is a local network device. If the target device is the local network device, the HNB proceeds to step 1215. In step 1215, the HNB checks whether LIPA scheme usage is set for the UE. If the LIPA method is not set for the UE as a result of the check, the HNB proceeds to step 1217. In step 1217, the HNB ignores the transmission of the packet data received from the UE because it is impossible to transmit the packet data to the local network device because the use of the LIPA scheme is not set.

On the other hand, if the use of the LIPA scheme for the UE is determined in step 1215, the HNB proceeds to step 1219. In step 1219, the HNB changes the source IP address of the UE to a PDP address and then proceeds to step 1221. In step 1221, the HNB terminates after transmitting the packet data whose source IP address is changed to the PDP address to the local network device. If the target device is not a local network device, that is, an external network device, the HNB proceeds to step 1223 in step 1213. In step 1223, the HNB checks whether SIPTO usage is set for the UE.

If the use of the SIPTO scheme is set for the UE, the HNB proceeds to step 1225. In step 1225, the HNB changes the source IP address of the UE to a local IP address, and then proceeds to step 1227. In step 1227, the HNB ends after transmitting the packet data of which the source IP address is changed to a local IP address to the external network device. On the other hand, if the use of the SIPTO scheme is not set for the UE in step 1223, the HNB proceeds to step 1229. In step 1229, the HNB performs a GTP tunneling procedure with the GGSN, and then proceeds to step 1231. In step 1231, the HNB ends after transmitting the packet data received from the UE to the external network device.

12 illustrates a process of transmitting packet data transmitted by a UE to a target device in a WCDMA communication system according to an embodiment of the present invention. Next, referring to FIG. 13, WCDMA communication according to an embodiment of the present invention. A process of transmitting packet data received by the HNB to the UE from the UE as the target device will be described.

FIG. 13 is a flowchart illustrating a process in which a HNB transmits packet data received by a HNB as a target device to a UE in a WCDMA communication system according to an embodiment of the present invention.

Before describing FIG. 13, it is assumed that the data session for the UE has already been set up.

Referring to FIG. 13, in step 1311, the HNB receives packet data of a UE as a target device, and proceeds to step 1313. In step 1313, the HNB checks the source IP address of the received packet data and checks whether the source device transmitting the packet data is a local network device. If the source device is a local network device, the HNB proceeds to step 1315. In step 1315, the HNB checks whether LIPA scheme usage is set for the UE.

If the LIPA method is not set for the UE as a result of the check, the HNB proceeds to step 1317. In step 1317, since the UE cannot receive the packet data transmitted from the local network device because the LIPA method usage is not set, the HNB ignores the packet data received from the local network device and terminates.

On the other hand, if the LIPA method usage is set for the UE as a result of the check in step 1315, the HNB proceeds to step 1319. In step 1319, the HNB changes the destination IP address of the packet data from a local IP address to a PDP address. That is, the HNB changes the IP address of the UE targeted by the received packet data from a local IP address to a PDP address. In step 1321, the HNB ends after transmitting the packet data whose destination IP address is changed to a PDP address. If the source device is not a local network device, that is, an external network device, the HNB proceeds to step 1323. In step 1323, the HNB checks whether the SIPTO scheme is set for the UE. When the use of the SIPTO scheme is set for the UE as a result of the check, the HNB proceeds to step 1325.

In step 1325, the HNB changes the IP address of the UE targeted by the received packet data from a local IP address to a PDP address, and then proceeds to step 1327. In step 1327, the HNB ends after transmitting the packet data changed to the PDP address to the UE.

On the other hand, if the SIPTO method usage is not set for the UE as a result of the check in step 1323, the HNB proceeds to step 1329. In step 1329, the HNB proceeds to step 1331 after performing the GTP termination procedure. In step 1331, the HNB ends after transmitting the received packet data to the UE.

In FIG. 13, a process of transmitting packet data received by the HNB using the UE as a target device to the UE in the WCDMA communication system according to an embodiment of the present invention has been described. Next, an embodiment of the present invention will be described with reference to FIG. 14. The internal structure of the HNB in the WCDMA communication system according to the present invention will be described.

14 is a diagram schematically showing an internal structure of an HNB in a WCDMA communication system according to an embodiment of the present invention.

Referring to FIG. 14, the HNB includes a receiving unit 1411, a control unit 1413, a storage unit 1415, and a transmitting unit 1417. The control unit 1413 controls the overall operation of the HNB, and in particular, controls to perform operations related to using the LIPA scheme and the SIPTO scheme for UEs through consultation with the HMS. Since the process of the HNB negotiating the use of the LIPA scheme and the SIPTO scheme for the HMS and the UEs is the same as described with reference to FIGS. 4 and 5, a detailed description thereof will be omitted.

The receiving unit 1411 receives various messages and packet data from the UE, the HMS, the router, and the like under the control of the control unit 1413. The storage unit 1415 stores various information such as a lookup table. The transmitting unit 1417 transmits various messages and packet data to the UE, the HMS, the router, and the like under the control of the control unit 1413.

Meanwhile, FIG. 14 illustrates a case in which the receiving unit 1411, the control unit 1413, the storage unit 1415, and the transmitting unit 1417 are implemented as separate units. 1411, the control unit 1413, the storage unit 1415, and the transmission unit 1417 may be implemented in one unit.

14 illustrates the internal structure of the HNB in the WCDMA communication system according to the embodiment of the present invention. Next, the internal structure of the HMS in the WCDMA communication system according to the embodiment of the present invention will be described with reference to FIG. 15. do.

15 is a diagram schematically showing an internal structure of an HMS in a WCDMA communication system according to an embodiment of the present invention.

Referring to FIG. 15, the HMS includes a receiving unit 1511, a control unit 1513, a storage unit 1515, and a transmitting unit 1517.

The control unit 1513 controls the overall operation of the HMS, and in particular, controls to perform operations related to using the LIPA scheme and the SIPTO scheme for UEs through consultation with the HNB. Since the process of the HMS negotiating the use of the LIPA scheme and the SIPTO scheme for the HNB and the UEs is the same as described with reference to FIGS. 4 and 6, a detailed description thereof will be omitted.

The receiving unit 1511 receives various messages from the HNB or the like under the control of the control unit 1513. The storage unit 1515 stores various kinds of information. The transmitting unit 1517 transmits various messages to the HNB or the like under the control of the control unit 1513.

15 illustrates a case in which the receiving unit 1511, the control unit 1513, the storage unit 1515, and the transmitting unit 1517 are implemented as separate units, the receiving unit ( 1511, the control unit 1513, the storage unit 1515, and the transmission unit 1517 may be implemented in one unit.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

Claims (48)

In the method of providing a packet data service of a Home Node B (HNB) management system (HMS) in a mobile communication system,
Receives report of usage status of Local Network Internet Protocol (LIPA) and Selective IP Traffic Offload (SIPTO) methods of user equipment (UE) from HNB Process,
Detecting the necessity of changing whether to use the LIPA method and the SIPTO method for the UE after receiving the report of the LIPA method and the SIPTO method usage;
Requesting the HNB to change whether to use a LIPA scheme and a SIPTO scheme for the UE.
The method of claim 1,
Detecting whether to change whether to use the LIPA scheme and SIPTO scheme for the UE is required;
And detecting the need to change whether to use the LIPA scheme and the SIPTO scheme for the UE in consideration of the number of UEs joined to the HNB, a traffic policy, and a handover. HMS packet data service providing method.
The method of claim 1,
Receiving the status of using the LIPA scheme and SIPTO scheme of the UE from the HNB includes;
Receiving a LIPA / SIPTO method usage status report message indicating the LIPA method and SIPTO method use status of the UE from the HNB,
The LIPA / SIPTO method usage status report message includes a LIPA / SIPTO method usage status indicator.
The LIPA / SIPTO method use status indicator includes a packet indicating whether the UE uses the LIPA method and a bit indicating whether the UE uses the SIPTO method. Way.
The method of claim 3,
The LIPA / SIPTO method usage status report message includes a UE identifier (ID) of the UE and a quality of service (QoS) parameter, and the QoS parameter is a service data unit (SDU) applied to the UE. Service Data Unit (H) A packet data service providing method of an HMS, comprising a size, an error rate, a traffic class, and a delay value.
The method of claim 1,
Requesting the HNB to change whether to use a LIPA scheme and a SIPTO scheme for the UE;
Transmitting a LIPA / SIPTO method usage change request message indicating to change whether to use the LIPA method and the SIPTO method for the UE to the HNB,
The LIPA / SIPTO method use change request message includes a LIPA / SIPTO method use change indicator,
The LIPA / SIPTO method use change indicator includes a bit indicating to change whether to use the LIPA method and a bit indicating to change whether to use the SIPTO method, the packet data service providing method of the HMS.
The method of claim 1,
The method for providing a packet data service of the HMS, further comprising reporting from the HNB whether the LIPA scheme and the SIPTO scheme for the UE have been changed.
The method of claim 1,
The method of claim 1, further comprising requesting the UE to report the LIPA scheme and the SIPTO scheme usage status to the HNB before receiving the LIPA scheme and the SIPTO scheme usage status.
A method of providing a packet data service of a home base station (HNB: Home Node B) in a mobile communication system,
Local Network Internet Protocol (LIPA) Access and Optional Internet Protocol Traffic Offload (SIPTO: Selective IP) of User Equipment (UE) to HNB Management System (HMS) Reporting traffic usage status,
After reporting the state of use of the LIPA scheme and the SIPTO scheme, receiving a request from the HMS to change whether to use the LIPA scheme and the SIPTO scheme for the UE;
And changing the use of the LIPA method and the SIPTO method of the UE according to the request for changing the use of the LIPA method and the SIPTO method.
9. The method of claim 8,
The change of whether to use the LIPA method and the SIPTO method for the UE is determined by the HMS in consideration of the number of UEs joined to the HNB, traffic policy, and handover. How to provide packet data service.
9. The method of claim 8,
Reporting the use status of the LIPA scheme and the SIPTO scheme of the UE to the HMS;
Transmitting a LIPA / SIPTO method use status report message indicating the LIPA method and SIPTO method use status of the UE to the HMS,
The LIPA / SIPTO method usage status report message includes a LIPA / SIPTO method usage status indicator.
The LIPA / SIPTO method usage status indicator includes a bit indicating whether the UE uses the LIPA method and a bit indicating whether the UE uses the SIPTO method, and provides a packet data service of the HNB. Way.
The method of claim 10,
The LIPA / SIPTO method usage status report message includes a UE identifier (ID) of the UE and a quality of service (QoS) parameter, and the QoS parameter is a service data unit (SDU) applied to the UE. Service Data Unit (H) A packet data service providing method of an HNB, comprising a size, an error rate, a traffic class, and a delay value.
9. The method of claim 8,
The process of receiving from the HMS to change whether to use the LIPA scheme and SIPTO scheme for the UE;
Receiving a LIPA / SIPTO method usage change request message indicating to change whether to use the LIPA method and the SIPTO method for the UE from the HMS,
The LIPA / SIPTO method use change request message includes a LIPA / SIPTO method use change indicator,
The LIPA / SIPTO method use change indicator includes a bit indicating to change whether to use the LIPA method and a bit to indicate to change whether to use the SIPTO method, the packet data service providing method of the HNB.
9. The method of claim 8,
Reporting to the HMS whether the LIPA scheme and the SIPTO scheme for the UE have been changed.
9. The method of claim 8,
And reporting the LIPA and SIPTO usage status of the UE from the HMS before reporting the LIPA and SIPTO usage status.
A method of providing a packet data service of a home base station (HNB: Home Node B) in a mobile communication system,
Receiving packet data from a user equipment (UE),
When a target device targeted by the packet data is a local network device, whether or not a local network IP (Access Protocol) (LIPA) method is used for the UE is set. Processing the packet data;
If the target device is an external network device, a packet of the HNB including processing the packet data according to whether the selective IP traffic offload (SIPTO) scheme is set for the UE. How to provide data services.
16. The method of claim 15,
The process of processing the packet data corresponding to whether the LIPA scheme use is set in the UE;
And not transmitting the packet data to the local network device when the LIPA scheme usage is not set in the UE.
16. The method of claim 15,
The process of processing the packet data corresponding to whether the LIPA scheme use is set in the UE;
Changing the source IP address of the UE included in the packet data to a packet data protocol (PDP) address when the LIPA scheme is set to the UE;
Transmitting packet data having the source IP address changed to the PDP address to the local network device.
16. The method of claim 15,
The process of processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Performing a Gateway General Packet Radio Service (GGSN) Support Node (GGSN) and a GPRS Tunneling Protocol (GTP) procedure when the SIPTO scheme is not used in the UE; ,
And transmitting the packet data to the external network device after performing the GTP tunneling procedure.
16. The method of claim 15,
The process of processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Changing the source IP address of the UE included in the packet data to a local IP address when the SIPTO scheme is set to the UE;
Transmitting packet data having the source IP address changed to the local IP address to the external network device.
A method of providing a packet data service of a home base station (HNB: Home Node B) in a mobile communication system,
Receiving, by a user equipment (UE), packet data of a target device from a router;
If the source device that transmitted the packet data is a local network device, the packet corresponds to whether the local network IP (Access Protocol) (LIPA) method is set for the UE. Process the data,
When the source device is an external network device, the packet of the HNB including processing the packet data according to whether the selective IP traffic offload (SIPTO) scheme is set for the UE. How data services are provided.
21. The method of claim 20,
The process of processing the packet data corresponding to whether the LIPA scheme use is set in the UE;
And if the use of the LIPA scheme is not set in the UE, processing to not transmit the packet data to the UE.
21. The method of claim 20,
The process of processing the packet data corresponding to whether the LIPA scheme use is set in the UE;
Changing the IP address of the UE included in the packet data to a packet data protocol (PDP) address when the LIPA scheme is set to the UE;
And transmitting the packet data of which the IP address of the UE is changed to the PDP address, to the UE.
21. The method of claim 20,
The process of processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Performing a Gateway General Packet Radio Service (GGSN) Support Node (GGSN) and a GPRS Tunneling Protocol (GTP) Termination procedure when the SIPTO scheme is not used in the UE; and,
And transmitting the packet data to the UE after performing the GTP tunneling termination procedure.
21. The method of claim 20,
The process of processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Changing the IP address of the UE included in the packet data to a packet data protocol (PDP) address when the SIPTO scheme is set to the UE;
And transmitting the packet data of which the IP address of the UE is changed to the PDP address, to the UE.
In a Home Node B (HNB) Management System (HMS) in a mobile communication system,
LIPA indicating the usage status of Local Network Internet Protocol (LIPA) and Selective IP Traffic Offload (SIPTO) methods of the user equipment (UE) from the HNB. A receiving unit for receiving the SIPTO method usage status report message,
A control unit that detects whether a change is required between the LIPA scheme and the SIPTO scheme for the UE;
And a sending unit for sending to the HNB a LIPA / SIPTO method usage change request message indicating to change whether to use the LIPA method and the SIPTO method for the UE.
26. The method of claim 25,
The control unit detects the need to change whether to use the LIPA method and the SIPTO method for the UE in consideration of the number of UEs joined to the HNB, the traffic policy, and the handover. HMS.
26. The method of claim 25,
The LIPA / SIPTO method usage status report message includes a LIPA / SIPTO method usage status indicator.
The LIPA / SIPTO method usage status indicator includes a bit indicating whether the UE uses the LIPA method and a bit indicating whether the UE uses the SIPTO method.
28. The method of claim 27,
The LIPA / SIPTO method usage status report message includes a UE identifier (ID) of the UE and a quality of service (QoS) parameter, and the QoS parameter is a service data unit (SDU) applied to the UE. : Service Data Unit (HMS) characterized in that it includes a size, an error rate, a traffic class, and a delay value.
26. The method of claim 25,
The LIPA / SIPTO method use change request message includes a LIPA / SIPTO method use change indicator,
The LIPA / SIPTO method use change indicator includes a bit indicating to change whether to use the LIPA method and a bit to indicate to change whether to use the SIPTO method.
26. The method of claim 25,
And the receiving unit receives from the HNB a LIPA / SIPTO method usage change response message indicating that the LIPA method and the SIPTO method for the UE have been changed.
26. The method of claim 25,
Before the receiving unit receives the LIPA scheme and SIPTO scheme usage status message, the transmitting unit is configured to report the LIPA scheme and the SIPTO scheme usage status to request the UE to report the LIPA scheme and the SIPTO scheme usage status of the UE. HMS, characterized in that sending a report message.
In a home base station (HNB: Home Node B) in a mobile communication system,
Local Network Internet Protocol (LIPA) Access and Optional Internet Protocol Traffic Offload (SIPTO: Selective IP) of User Equipment (UE) to HNB Management System (HMS) A transmission unit for transmitting a LIPA / SIPTO method usage status report indicating a traffic offload) usage status;
A receiving unit for receiving a LIPA / SIPTO method use change request message indicating to change whether to use the LIPA method and the SIPTO method for the UE from the HMS;
And a control unit for changing whether to use the LIPA method and the SIPTO method of the UE according to the LIPA / SIPTO method use change request message.
33. The method of claim 32,
The change of whether to use the LIPA scheme and the SIPTO scheme for the UE is determined by the HMS in consideration of the number of UEs joined to the HNB, traffic policy, and handover.
33. The method of claim 32,
The LIPA / SIPTO method usage status report message includes a LIPA / SIPTO method usage status indicator.
The LIPA / SIPTO method usage status indicator includes a bit indicating whether the UE uses the LIPA method and a bit indicating whether the UE uses the SIPTO method.
35. The method of claim 34,
The LIPA / SIPTO method usage status report message includes a UE identifier (ID) of the UE and a quality of service (QoS) parameter.
The QoS parameter includes a service data unit (SDU) size, an error rate, a traffic class, and a delay value applied to the UE. HNB characterized.
33. The method of claim 32,
The LIPA / SIPTO method use change request message includes a LIPA / SIPTO method use change indicator,
The LIPA / SIPTO method use change indicator includes a bit indicating to change whether to use the LIPA method and a bit to indicate to change whether to use the SIPTO method.
33. The method of claim 32,
And the transmitting unit transmits a LIPA / SIPTO method usage change response message indicating that the LIMS has changed whether to use the LIPA method and the SIPTO method for the UE.
33. The method of claim 32,
Before the transmitting unit transmits the LIPA scheme and the SIPTO scheme usage status message, the receiving unit reports the LIPA scheme and the SIPTO scheme usage status requesting to report the LIPA scheme and the SIPTO scheme usage status of the UE from the HMS. An HNB characterized by receiving a request message.
In a home base station (HNB: Home Node B) in a mobile communication system,
A receiving unit for receiving packet data from a user equipment (UE);
When a target device targeted by the packet data is a local network device, whether or not a local network IP (Access Protocol) (LIPA) method is used for the UE is set. Processing the packet data;
If the target device is an external network device, controlling to process the packet data according to whether the selective IP traffic offload (SIPTO) usage is set for the UE; An HNB comprising a unit.
40. The method of claim 39,
Processing the packet data according to whether the LIPA scheme usage is set in the UE;
And if the use of the LIPA scheme is not set in the UE, processing to not transmit the packet data to the local network device.
41. The method of claim 40,
Processing the packet data according to whether the LIPA scheme usage is set in the UE;
Changing the source IP address of the UE included in the packet data to a packet data protocol (PDP) address when the LIPA scheme is set to the UE;
Sending packet data with the source IP address changed to the PDP address to the local network device.
40. The method of claim 39,
Processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Performing a Gateway Packet Radio Service (GGSN) Support Node (GGSN) and a GPRS Tunneling Protocol (GTP) procedure when the SIPTO scheme is not configured for the UE; ,
Transmitting the packet data to the external network device after performing the GTP tunneling procedure.
40. The method of claim 39,
Processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Changing a source IP address of the UE included in the packet data to a local IP address when the SIPTO scheme is set to the UE;
Sending packet data with the source IP address changed to the local IP address to the external network device.
In a home base station (HNB: Home Node B) in a mobile communication system,
A receiving unit for receiving packet data in which a user equipment (UE) is a target device from a router;
If the source device that transmitted the packet data is a local network device, the packet corresponds to whether the local network IP (Access Protocol) (LIPA) method is set for the UE. To process the data,
If the source device is an external network device, controlling to perform an operation of processing the packet data according to whether the use of a Selective IP Traffic Offload (SIPTO) scheme is set in the UE; An HNB comprising a unit.
The method of claim 44,
Processing the packet data according to whether the LIPA scheme usage is set in the UE;
And if the use of the LIPA scheme is not set in the UE, processing to not transmit the packet data to the UE.
The method of claim 44,
Processing the packet data according to whether the LIPA scheme usage is set in the UE;
Changing the IP address of the UE included in the packet data to a packet data protocol (PDP) address when the LIPA scheme is set to the UE;
Sending packet data with the IP address of the UE changed to the PDP address.
The method of claim 44,
Processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Performing a Gateway Packet Radio Service (GGSN) Support Node (GGSN) and a GPRS Tunneling Protocol (GTP) Termination procedure when the SIPTO scheme is not used in the UE; and,
And transmitting the packet data to the UE after performing the GTP tunneling termination procedure.
The method of claim 44,
Processing the packet data according to whether the SIPTO scheme usage is set in the UE;
Changing the IP address of the UE included in the packet data to a packet data protocol (PDP) address when the SIPTO scheme is set to the UE;
Sending packet data with the IP address of the UE changed to the PDP address.

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