WO2013005786A1

WO2013005786A1 - Mobile station device, location management device, lgw, access control device, mobile communication system, and mobile communication method

Info

Publication number: WO2013005786A1
Application number: PCT/JP2012/067151
Authority: WO
Inventors: 政幸榎本; 真史新本
Original assignee: シャープ株式会社
Priority date: 2011-07-05
Filing date: 2012-07-05
Publication date: 2013-01-10
Also published as: JP2013017091A

Abstract

In the present invention, by transmitting a tracking area update request message from a mobile station device, notification is performed for authorization information for transmission and reception of data for a broadband network from a home base station to a core network, by which switching is performed from the transmission and the reception of the data across the core network to the transmission and the reception of the data across the broadband network. As a result, a mobile communication system, etc. is provided in which, when the core network and a mobile station device connected to a home base station device which has been connected to the broadband network perform transmission and reception of data across the core network, if the authorization information for the mobile station device indicates authorization, it is possible to transmit and receive the data from the home base station device across the broadband network.

Description

Mobile station apparatus, position management apparatus, LGW, access control apparatus, mobile communication system, and mobile communication method

The present invention relates to a mobile communication system in which a home network having a home base station device to which a mobile station device is connected and a core network to which a location management device and an access control device are connected are connected via a broadband network. .

The 3GPP (The 3rd Generation Generation Partnership Project), a standardization organization for mobile communication systems, is working on the specification of the EPS (Evolved Packet System) described in Non-Patent Document 1 below as a next generation mobile communication system. As a component device, a HeNB (Home eNodeB: home base station), which is a small base station installed in a house or the like, has been studied.

The HeNB constructs a small-scale radio cell called a femto cell and accommodates a UE (User ： Equipment: mobile terminal device) using the same radio access technology as that of a normal base station. And it connects to the core network of a mobile communication system via a broadband network, and the communication data of UE accommodated can be relayed.

Further, the following Non-Patent Document 2 discloses an architecture candidate for realizing local IP access in HeNB. The local IP access is a function that provides the UE with direct connectivity to a network such as a home IP network (hereinafter referred to as “home network”) to which the HeNB is directly connected. It is possible to communicate with other information terminals (for example, a digital video recorder, a printer, etc.) connected to the home network without going through the core network of the system.

Further, the following Non-Patent Document 2 discloses a candidate architecture for realizing SIPTO (Selected IP Traffic Offload). SIPTO provides data communication to a UE accommodated in an eNB via a broadband network without passing through a core network of a mobile communication system while the UE is connected to a base station (eNB).

Non-Patent Document 3 below describes SIPTO, and the UE is connected to the HeNB and accommodated in the HeNB via the home network and the broadband network without going through the core network of the mobile communication system. Providing data communication to the UE that

In Non-Patent Document 3, a method in which the UE performs data communication from the eNB via the broadband network is described as SIPTO @ CN (Core Network), and data communication is performed from the HeNB via the home network via the broadband network. The method is described as SIPTO @ LN (Local Network).

In the home network, Local Gateway (LGW) connects the broadband network and the HeNB to provide data communication. Here, when the UE is connected to a HeNB connected to a different LGW by movement during communication, the IP address of the UE is changed and data communication cannot be continued. A handover procedure for continuing data communication even when the UE is connected to a HeNB connected to a different LGW is discussed.

In Non-Patent Document 4, when data communication is performed from the HeNB via the broadband network (SIPTO @ LN), the permission information of the mobile communication network operator managing the core network and the broadband network are managed. The permission information of the business operator and the permission information of the user are discussed.

The data communication (SIPTO @ CN) from the eNB via the broadband network, which is a conventional offload technology, was determined only by the intention of the mobile communication network operator, and the intention of the user was not reflected.

The decision on whether or not data communication (SIPTO @ LN) is possible from the HeNB via the broadband network requires an agreement between the mobile communication network operator, the broadband network operator, and the user. Since there is no means for notifying whether or not off-loading is started based on the means, off-loading cannot be performed reflecting the intention of the user.

In particular, when the UE is in an active state in which data communication is being performed, the offload in which communication performed via the core network is switched to communication via the broadband network, reflecting the intention of the UE being able to be offloaded. In addition, it was not possible to stop offloading, in which communication performed via the broadband network was switched to communication via the scary network.

In addition, the means for notifying whether or not the user can perform offloading and the procedure for starting offloading based on it are considered here considering the load of equipment accompanying the increase in control messages and the effective use of network resources. It is desirable that the method does not require new complicated procedures and minimizes changes to existing procedures.

The present invention has been made in view of such circumstances, and an object of the present invention is to immediately based on a user's decision in an active state in which a mobile station device connected to a base station device is performing data communication. It is to provide a mobile communication system or the like that notifies whether or not offloading is possible and starts or stops offloading to continue data communication.

In view of the above-described problems, the mobile station apparatus of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile station apparatus connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
When the mobile station device performs data communication on the first communication path, the location management device transmits permission information for switching to the second communication route to the location management device via the home base station device. And

Also, the mobile station apparatus of the present invention is characterized in that the permission information is included in a tracking area update request message and transmitted to the home base station.

The mobile station apparatus of the present invention is characterized in that the permission information is included in a service request message and transmitted to the home base station.

A location management device of the present invention includes a mobile station device, a home base station device to which the mobile station device is connected, and a home network including an LGW (Local Gateway),
A core network connected to an external network including a location management device and an access control device;
In a location management device connected to a mobile communication system including the home network and a broadband network connected to the core network and an external network,
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information of the mobile station apparatus to be switched to the second communication path from the mobile station apparatus performing data communication on the first communication path;
Based on the received permission information, the LGW is instructed to switch from the first communication path to the second communication path.

The location management device of the present invention is characterized in that the permission information is included in a received tracking area update request message.

The location management device of the present invention is characterized in that the permission information is included in a received service request message.

In addition, the location management device of the present invention is registered with the permission information of the network operator,
When the received permission information of the mobile station apparatus is permission and the permission information of the network operator is permission, an instruction to switch the position management apparatus from the first communication path to the second communication path It is characterized by doing.

The LGW of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In an LGW connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. It is characterized by switching to a route.

The mobile station apparatus of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile station apparatus connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
When the mobile station apparatus performs data communication on the second communication path, the location management apparatus transmits permission information for switching to the first communication path to the position management apparatus via the home base station apparatus. To do.

The mobile station apparatus of the present invention is characterized in that the permission information is included in a service request message and transmitted to the home base station apparatus.

The position management device of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a location management device connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
Based on the received permission information, the LGW is instructed to switch from the second communication path to the first communication path.

In the location management device of the present invention, the permission information is included in a received tracking area update request message.

In the location management device of the present invention, the permission information is included in a received service request message.

The access control apparatus of the present invention
A home network including a mobile station device, a home base station to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In an access control apparatus connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device
A first communication path of the mobile station device is secured based on an instruction from the location management device.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
The mobile station device
When data communication is performed through the first communication path, the location management apparatus transmits permission information for switching to the second communication path to the position management apparatus via the home base station apparatus.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information of the mobile station apparatus to be switched to the second communication path from the mobile station apparatus performing data communication on the first communication path;
Based on the received permission information, the LGW is instructed to switch from the first communication path to the second communication path.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The LGW includes a first communication path through which the mobile station apparatus performs data communication via a core network, and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on SIPTO permission information,
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. The LGW is switched to a route.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
The mobile station device transmits permission information for the location management device to switch to the first communication route to the location management device via the home base station device when performing data communication on the second communication route. It is characterized by that.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
Based on the received permission information, the LGW is instructed to switch from the second communication path to the first communication path.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device secures a first communication path of the mobile station device based on an instruction from the location management device.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
The mobile station device
When performing data communication on the first communication path, the location management device transmits permission information for switching to the second communication path to the home base station,
The location management device includes:
Receiving from the home base station permission information of the mobile station apparatus to switch to the second communication path from the mobile station apparatus performing data communication on the first communication path;
Based on the received permission information, instruct the LGW to switch from the first communication path to the second communication path,
The LGW is
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. It is characterized by switching to a route.

The mobile communication system of the present invention is
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information for switching to the first communication path from the home base station apparatus from the mobile station apparatus performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device secures a first communication path of the mobile station device based on an instruction from the location management device.

The mobile communication method of the present invention
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication method including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
The mobile station device
When performing data communication on the first communication path, the location management device transmits permission information for switching to the second communication path to the home base station,
The location management device includes:
Receiving from the home base station permission information of the mobile station apparatus to switch to the second communication path from the mobile station apparatus performing data communication on the first communication path;
Based on the received permission information, instruct the LGW to switch from the first communication path to the second communication path,
The LGW is
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. It is characterized by switching to a route.

The mobile communication method of the present invention
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication method including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
Receiving permission information for switching to the first communication path from the home base station apparatus from the mobile station apparatus performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device secures a first communication path of the mobile station device based on an instruction from the location management device.

When data communication (SIPTO @ LN) via the broadband network is permitted from the HeNB in each of the mobile communication network operator, the broadband network operator, and the user, the data communication (SIPTO @ LN) via the broadband network from the HeNB It is possible to pick up the permission information of the UE and start data communication from the HeNB via broadband.

That is, when the UE performs data communication from the HeNB via the core network, based on the permission information (permission) of the UE from the HeNB to the data communication via the broadband network (SIPTO @ LN), the HeNB passes the broadband network ( Data communication can be continued by switching to SIPT @ LN).

In addition, when the UE performs data communication (SIPTO @ LN) from the HeNB via the broadband network, the HeNB to the core band network based on permission information (non-permission) of the UE for data communication via the core network. Data communication can be continued by switching to via.

It is a figure for demonstrating the whole mobile communication system in 1st Embodiment. It is a figure for demonstrating the function structure of MME in 1st Embodiment. It is the figure which showed an example of the SIPTO permission information management table in MME of 1st Embodiment. It is a figure for demonstrating the function structure of HSS in 1st Embodiment. It is the figure which showed an example of the SIPTO permission information management table in HSS of 1st Embodiment. It is a figure for demonstrating the function structure of SGW in 1st Embodiment. It is the figure which showed an example of the SIPTO permission information management table in SGW of 1st Embodiment. It is a figure for demonstrating the function structure of LGW in 1st Embodiment. It is a figure for demonstrating the function structure of HeNB in 1st Embodiment. It is the figure which showed an example of the SIPTO permission information management table in HeNB of 1st Embodiment. It is a figure for demonstrating the function structure of UE in 1st Embodiment. It is the figure which showed an example of the SIPTO permission information management table in UE of 1st Embodiment. It is a figure for demonstrating a process in 1st Embodiment. It is a figure for demonstrating a process in 1st Embodiment. It is a figure for demonstrating a process in 1st Embodiment. It is a figure for demonstrating a process in 1st Embodiment. It is a figure for demonstrating a process in 2nd Embodiment. It is a figure for demonstrating a process in 2nd Embodiment. It is a figure for demonstrating a process in 2nd Embodiment. It is a figure for demonstrating a process in 2nd Embodiment. It is a figure for demonstrating a process in 2nd Embodiment. It is a figure for demonstrating a process in 3rd Embodiment.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In the present embodiment, as an example, an embodiment of a mobile communication system when the present invention is applied will be described in detail with reference to the drawings.

[1. First Embodiment]
First, a first embodiment to which the present invention is applied will be described with reference to the drawings.

[1.1 Overview of mobile communication system]
FIG. 1 is a diagram for explaining the outline of a mobile communication system in the present embodiment. As shown in the figure, the mobile communication system 1 includes a core network 3, a home network 5, and a broadband network 7.

The broadband network 7 is a wired access network that realizes broadband communication, and is constructed by, for example, ADSL (Asymmetric Digital Subscriber Line) or an optical fiber. However, the present invention is not limited to this, and a wireless access network such as WiMAX (Worldwide Interoperability for Microwave Access) may be used.

The core network 3 is a mobile communication network operated by a mobile communication carrier, and includes an MME (Mobility Management Entity) 10, an HSS (Home Subscriber Server) 20, a GW (Gateway) 25, an SGW (Serving Ｗ Gateway) 30, , PGW (Packet | data | network | Gateway) 40 is arrange | positioned.

The MME 10 is an entity that performs signaling, and is a location management device that leads the location management of the mobile station device (UE) and the establishment procedure of the PDN connection. The PDN connection is a logical path for transferring a user IP packet established between the PGW 40 and the UE 70 or between the LGW 50 and the UE 70 in the home network for each UE. The establishment of the PDN connection includes the establishment of bearers such as EPS bearers and radio bearers, and each bearer can set a specific QoS level using factors such as communication speed and bandwidth.

The HSS 20 manages user subscription information. The MME 10 can acquire the subscription information by inquiring the subscription information to the HSS 20 and can check the access authority based on the acquired subscription information.

GW 25 functions as a gateway between the core network and the broadband network. Note that the GW and the SGW may be physically configured by the same node.

The SGW 30 is an access control device that transfers packets between the PGW 40 and the HeNB 60. Note that the PGW and the SGW may be physically composed of the same node.

The PGW 40 is connected to an external PDN (Packet Data Network: packet communication network) such as the Internet, and functions as a gateway that connects the core network and those PDNs. The PGW 40 transmits data transmitted from the PDN to the UE from the PDN. While receiving and transferring to SGW30, the data transmitted from UE to PDN are received from SGW30 and transferred to PDN. For example, as shown in FIG. 1, when the PDN is the Internet, the PGW 40 is connected to the Internet.

The home network 5 is a home network in a home, a corporate network such as a company, and the like, and includes an LGW (Local Gateway) 50, a HeNB (Home NodeB) 60, and a UE (User Equipment) 70. Further, the home network 5 is connected to the broadband network 7.

The LGW 50 is a gateway device between the home network 5 and the broadband network 7, and is a device having a function as a conventional broadband router such as a router having a built-in ADSL modem.

The HeNB 60 accommodates the UE 70 as a base station provided by the core network operator while being installed in the home network. Typically, this is a 3GPP LTE (Long Term Evolution) base station that forms a femto cell.

The UE 70 is a mobile communication terminal connected to the HeNB 60 and is connected with a 3GPP LTE communication interface or the like.

[1.2 Device configuration]
Next, each device configuration will be briefly described with reference to the drawings. Note that the GW 25 and the PGW 40 are configured in the same manner as a conventional device in a mobile communication system using EPS, and thus detailed description thereof is omitted.

Further, since the LGW 50 is configured in the same manner as a conventional broadband router device, a detailed description thereof is omitted.

[1.2.1 Configuration of MME]
FIG. 2 shows a configuration of the MME 10 in the present embodiment. In the MME 10, a transmission / reception unit 110 and a storage unit 150 are connected to the control unit 100 via a bus.

The control unit 100 is a functional unit for controlling the MME 10. The control unit implements various functions by reading and executing various programs stored in the storage unit 150.

The transmission / reception unit 110 is a functional unit that is wired to a router or a switch and transmits and receives packets. For example, transmission / reception is performed by Ethernet (registered trademark) or the like generally used as a network connection method.

The storage unit 150 is a functional unit that stores programs, data, and the like necessary for various operations of the MME 10. Further, the storage unit 150 stores a SIPTO permission information management table 152.

FIGS. 3A and 3B are diagrams showing an example of the SIPTO permission information management table 152. FIG. For example, in FIG. 3A, a UE ID (for example, “UE1”), an APN (for example, “Internet”), a bearer ID (for example, “bearer ID”), and SIPTO permission information are associated with each other. Memorized and registered.

Here, whether or not to permit SIPTO @ LN is registered in the SIPTO permission information, and is registered for each terminal and each network (operator). In the case of this embodiment, UE permission information (for example, “non-permitted”), mobile communication network operator permission information (for example, “permitted”), and broadband network operator permission information (for example, “permitted”). )).

Thereby, SIPTO permission information for the APN specified as connection destination information at the time of attachment and bearer information to be established are managed. In addition, the kind contained in SIPTO permission information is at least better than this, and many may be sufficient. For example, when the permission information of the broadband network operator is determined in advance, the permission information of the UE and the permission information of the operator of the mobile communication network may be included.

Here, “UE ID” is an identifier for identifying the UE, and “APN” indicates connection destination information transmitted when the user transmits an attach request and makes a connection request, and “UE permission information”. Indicates whether the UE 70 permits or disallows data communication from the HeNB 60 via the broadband network 7 (SIPTO @ LN).

“Permission information of mobile communication network operator” indicates whether the mobile communication network operator allows or disallows communication via the broadband network (SIPTO @ LN). The “permission information” indicates whether or not communication (SIPTO @ LN) via the broadband network 7 is permitted or not permitted in the broadband network operator.

Here, if all of the SIPTO permission information is not permitted, SIPTO @ LN cannot be used.

Further, in FIG. 3 (b), for each PDN connection established by the UE, the established bearer ID, “UE permission information”, “mobile network operator permission information”, and “broadband network operator permission information”. Is managing. In the case where the permission is permitted in all permission information, the UE indicates that data communication is performed from the HeNB 60 via the home network and the broadband network by the described PDN connection.

As described above, the SIPTO permission information management table 152 manages whether the APN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established PDN connection. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established bearer.

In this embodiment, FIGS. 3A and 3B are described as being registered in the SIPTO permission information management table 152, but it is needless to say that only one of them may be registered. .

[1.2.2 HSS configuration]
Subsequently, the configuration of the HSS 20 in the present embodiment is shown in FIG. In the HSS 20, a transmission / reception unit 210 and a storage unit 250 are connected to the control unit 200 via a bus.

The control unit 200 is a functional unit for controlling the HSS 20. The control unit implements various functions by reading and executing various programs stored in the storage unit 250.

The transmission / reception unit 210 is a functional unit that is wired to a router or a switch and transmits and receives packets. For example, transmission / reception is performed by Ethernet (registered trademark) or the like generally used as a network connection method.

The storage unit 250 is a functional unit that stores programs, data, and the like necessary for various operations of the HSS 20. Further, the storage unit 250 stores a SIPTO permission information management table 252.

5A and 5B are diagrams showing an example of the SIPTO permission information management table 252. FIG. The SIPTO permission information management table 252 stores the same information as the SIPTO permission information management table 152 described with reference to FIGS.

That is, the SIPTO permission information management table 252 manages whether the APN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established PDN connection. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established bearer.

[1.2.3 Configuration of SGW]
Then, the structure of SGW30 in this embodiment is shown in FIG. In the SGW 30, a first transmission / reception unit 310, a second transmission / reception unit 320, and a storage unit 350 are connected to the control unit 300 via a bus.

The control unit 300 is a functional unit for controlling the SGW 30. The control unit 300 implements each function by reading and executing various programs stored in the storage unit 350.

The first transmission / reception unit 310 and the second transmission / reception unit 320 are functional units that are connected to other devices and transmit / receive data. For example, transmission / reception is performed by Ethernet (registered trademark) or the like generally used as a network connection method. Here, the first transmission / reception unit 310 performs data transmission / reception with a device connected downstream such as the HeNB 80, and the second transmission / reception unit 320 realizes a function of performing data transmission / reception with a device connected upstream such as the PGW 20 or the MME 10.

The storage unit 350 is a functional unit that stores programs, data, and the like necessary for various operations of the SGW 30. Further, the storage unit 350 stores a SIPTO permission information management table 352.

7A and 7B are diagrams showing an example of the SIPTO permission information management table 352. FIG. The SIPTO permission information management table 252 stores the same information as the SIPTO permission information management table 152 described with reference to FIGS.

That is, the SIPTO permission information management table 352 manages whether the APN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established PDN connection. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established bearer.

[1.2.4 LGW configuration]
Then, the structure of LGW50 in this embodiment is shown in FIG. In the LGW 50, a core network interface unit 510, a broadband network interface unit 520, a home network interface unit 530, a local IP address generation unit 540, and a storage unit 550 are connected to the control unit 500 via a bus. .

The control unit 500 is a functional unit for controlling the LGW 50. The control unit 500 implements various functions by reading and executing various programs stored in the storage unit 550.

The core network interface unit 510 is a network interface unit connected to the core network 3, receives a packet from the core network interface unit 510, and transfers the packet to the home network interface unit 530.

Also, the packet received from the home network interface unit 530 is transferred to the core network interface unit 510. Here, the LGW 50 sets the SGW address 552 as a transfer destination.

The broadband network interface unit 520 is a network interface unit connected to the broadband network 7, receives a packet from the broadband network interface unit 520, and transfers the packet to the home network interface unit 530.

Also, the packet received from the home network interface unit 530 is transferred to the broadband network interface unit 520. Here, the LGW 50 sets the external address 554 as a transfer destination.

The home network interface unit 530 is a network interface unit connected to the home network 5. As described above, the home network interface unit 530 transfers received packets to the core network interface unit 510 and the broadband network interface unit 520, or conversely, the core network. Packets received by the interface unit 510 and the broadband network interface unit 520 are transferred.

The local IP address generation unit 540 is a functional unit that generates a local IP address assigned to the UE 70 connected to the home network 5.

The storage unit 550 is a functional unit that stores various programs and various data necessary for the operation of the LGW 50. The storage unit 550 includes, for example, a semiconductor memory, an HDD (Hard Disk Drive), or the like.

Here, the storage unit 550 stores an SGW address 552, an external address 554, and a local IP address 556. The SGW address 552 indicates the address of the SGW 30 arranged in the core network. An external address 554 indicates an address for accessing the broadband network. The local IP address is the address of the UE 70 connected to the home network.

[1.2.5 HeNB configuration]
FIG. 9 shows a configuration of the HeNB 60 in the present embodiment. In the HeNB 60, an LTE base station unit 610, a home network interface unit 620, and a storage unit 650 are connected to the control unit 600 via a bus.

The control unit 600 is a functional unit for controlling the HeNB 60. The control unit 600 implements various functions by reading and executing various programs stored in the storage unit 650.

The LTE base station unit 610 functions as an E-UTRA base station and is a functional unit for accommodating the UE 70. In addition, an external antenna 612 is connected to the LTE base station unit 610.

The home network interface unit 620 receives the packet from the home network interface unit 620, rewrites the transmission destination IP address, and transfers the packet to the LTE base station unit 610.

Also, the packet received from the LTE base station unit 610 is transferred to the home network interface unit 620.

The storage unit 650 is a functional unit in which various programs necessary for the operation of the HeNB 60 and various data are stored. The storage unit 650 includes, for example, a semiconductor memory, an HDD (Hard Disk Drive), or the like. The storage unit 650 stores a SIPTO permission information management table 652.

FIGS. 10A and 10B are diagrams showing an example of the SIPTO permission information management table 652. FIG. The SIPTO permission information management table 252 stores the same information as the SIPTO permission information management table 152 described with reference to FIGS.

That is, the SIPTO permission information management table 652 manages whether the APN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established PDN connection. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established bearer.

When the HeNB 60 receives a flow from the UE 70, the HeNB 60 looks at which EPS bearer the flow is transmitted using, and permits the UE, the mobile carrier, and the broadband network operator in the EPS bearer. When the respective permission settings are “permitted”, the flow is directly transmitted from the home network interface unit 620 to the home network, the permission information of the UE, the permission information of the mobile communication carrier, and the broadband network business. If any setting of the permission information of the person is “non-permitted”, the information is transferred to the SGW 30.

Alternatively, when the HeNB 60 receives a flow from the UE 70, the HeNB 60 sees which PDN connection is used to transmit the flow, and permits the UE, the mobile carrier, and the broadband network in the PDN connection. When each of the operator permission settings is “permitted”, the flow is directly transmitted from the home network interface unit 620 to the home network, and the permission information of the UE, the permission information of the mobile communication carrier, and the broadband When any setting of the permission information of the network operator is “non-permitted”, the information is transferred to the SGW 30.

[1.2.6 UE configuration]
Next, the configuration of the UE 70 that is a mobile station apparatus in the present embodiment will be described. As shown in FIG. 11, an LTE interface unit 710 and a storage unit 750 are connected to the control unit 700 via a bus.

The control unit 700 is a functional unit for controlling the UE 70. The control unit 700 implements various functions by reading and executing various programs stored in the storage unit 750.

The LTE interface unit 710 is a functional unit for the UE 70 to connect to the HeNB 60 and transmit / receive specific data (packets). In addition, an external antenna 712 is connected to the LTE interface unit 710.

The storage unit 750 is a functional unit that stores programs, data, and the like necessary for various operations of the UE 70. Further, the storage unit 750 stores a SIPTO permission information management table 752.

FIG. 12 is a diagram showing an example of the SIPTO permission information management table 752. The SIPTO permission information management table 752 stores the same information as the SIPTO permission information management table 152 described with reference to FIGS.

That is, the SIPTO permission information management table 752 manages whether the APN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established PDN connection. Furthermore, it manages whether SIPTO @ LN is permitted or not permitted by the UE, the mobile communication carrier, and the broadband carrier for the established bearer.

Thereby, when UE70 transmits data, it can communicate after grasping | ascertaining whether the connected APN communicates by SIPTO @ LN. Alternatively, it is possible to perform communication after grasping whether or not the PDN connection used for communication communicates by SIPTO @ LN. Alternatively, it is possible to perform communication after grasping whether or not the PDN connection used for communication communicates by SIPTO @ LN.

In other words, when there are a plurality of APN connections, it is possible to perform communication by selecting an APN in order to perform communication using SIPTO @ LN. Alternatively, when a plurality of PDN connections are established, it is possible to perform communication by selecting a PDN connection in order to perform communication using SIPTO @ LN. Or when the some bearer is established, in order to communicate by SIPTO @ LN, it can communicate by selecting a bearer.

Here, the UE 70 does not necessarily have to manage “permission information of the mobile communication network operator” and “permission information of the broadband network operator”. In that case, UE permission information is notified to devices in the core network such as MME and HSS, and whether or not SIPTO @ LN is permitted is managed based on the UE permission information.

That is, it manages whether or not SIPTO @ LN is permitted / disallowed for APN based on bearer ID, UE permission information, and UE permission information. In this case, since the UE 70 does not hold “permission information of the mobile communication network operator” and “permission information of the broadband network operator”, the UE 70 receives the permission information of the UE without being based on the core network 3 such as the MME and the HSS 20. Notify the device inside.

Alternatively, when managing “permission information of a mobile communication network operator” and “permission information of a broadband network operator”, the permission information of the UE is notified to a device in the core network 3 such as the MME 10 or the HSS 20. In this case, it is transmitted only when both “permission information of mobile communication network operator” and “permission information of broadband network operator” are permitted.

When notifying the permission information of the UE to devices in the core network such as MME and HSS, both “permission information of mobile communication network operator” and “permission information of broadband network operator” are permitted. Only send if

In order to perform communication by SIPTO @ LN, “UE permission information”, “mobile communication network operator permission information”, and “broadband network operator permission information” all need to be permitted. By confirming that the “permission information of the mobile communication network operator” and the “permission information of the broadband network operator” are permitted, it is possible to eliminate useless notifications that are not SIPTO @ LN by the notification. .

[1.3 Explanation of processing]
Next, in the network shown in FIG. 1, in a state where the UE 70 is transmitting / receiving data via the core network 3 from the HeNB 60, the UE 70 receives permission information for data transmission / reception via the broadband network (SIPTO @ LN). A procedure for transmitting and receiving data via a broadband network (SIPTO @ LN) when changing from non-permission to permission will be described.

In the first embodiment, when data communication (SIPTO @ LN) from the HeNB 60 via the broadband network 7 is permitted while the UE 70 is transmitting / receiving data from the HeNB 60 via the core network 3, The data communication is switched from the HeNB 60 to the data communication via the broadband network 7.

[1.3.1 Notification of “permission” of SIPTO @ LN by UE]
In FIG. 13, when the UE 70 changes SIPTO @ LN from “non-permitted” to “permitted”, the UE 70 makes a tracking area update request so that the user can send the mobile communication network operator to the mobile communication network operator from the HeNB 60 via the broadband network 7. (SIPTO @ LN) is requested (the permission information of UE 70 is updated to “permitted” in HSS 20). Conventionally, the UE 70 starts the tracking area update request procedure only in an idle state in which communication is not performed. In the present embodiment, in order to notify the communication permission / denial of SIPTO @ LN, the UE 70 is in an active state during communication. Start tracking area update procedure.

Here, making a tracking area update request is a process performed by sending a tracking area update request message. For example, in S1304, the tracking area update request message is transmitted from the UE 70 to the HeNB 60.

Note that the permission information of the UE 70 may be notified after confirming that the permission information of the broadband network operator and the permission information of the mobile communication network operator are “permitted”. The permission information of the broadband network operator and the permission information of the mobile communication network operator are notified to the UE 70 by the MME 10 or the HSS 20 in advance, and the UE 70 holds the received information.

Alternatively, the UE 70 does not have to hold permission information of the broadband network operator and permission information of the mobile communication network operator. In that case, the UE 70 notifies the permission information of the UE 70 without confirming the permission information of the broadband network operator and the permission information of the mobile communication network operator.

Referring to FIG. 13, a description will be given in order. First, the UE 70 changes permission information for data communication (SIPTO @ LN) via the broadband network from the HeNB 60 to “permitted” from “not permitted” (S1302).

UE 70 transmits a tracking area update request message to HeNB 60 and notifies permission information of UE 70 (S1304). The trigger of transmission detects that the permission information of UE70 is updated by manual operation by the user. At this time, as shown in FIG. 14A, the UE 70 transmits the tracking area update request message including the UE ID, the APN, and the UE permission information.

As shown in FIG. 14B, the tracking area update request message may include UE ID, PDN connection, and UE permission information. Or as shown in FIG.14 (c), you may include UE ID, bearer ID, and permission information of UE.

Thereby, the UE 70 requests to switch the communication via the core network 3 to the communication of the offloaded communication (SIPTO @ LN) via the broadband network 7. This request can be requested in units of APN by notifying the APN together, can also be requested in units of PDN connection by notifying the PDN connection identifier, and the bearer ID is also notified. This can be requested in bearer units.

HeNB60 which received the tracking area update request message from UE70 transmits a tracking area update request to MME10 (S1306). At this time, information on the connected network, information identifying the HeNB 60, and information identifying the home network may be included. At this time, as shown in FIG. 15A, the UE 70 transmits the tracking area update request message including the UE ID, APN, bearer ID, and UE permission information.

At this time, the UE ID includes “UE1”, the APN includes “Internet”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”. As shown in FIG. 15B, the tracking area update request message may include UE ID, PDN connection, bearer ID, and UE permission information. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”.

Further, as shown in FIG. 15C, the tracking area update request message may include the UE ID, bearer ID, and UE permission information. At this time, the UE ID includes “UE1”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”.

The MME 10 that has received the UE ID, APN, and UE permission information registers the UE ID, the APN, and the UE permission information in the SIPTO permission information management table 152 in association with each other. When the UE ID, bearer ID, PDN connection, and UE permission information are received, the UE ID, bearer ID, PDN connection, and UE permission information are associated and registered. When the UE ID, bearer ID, and UE permission information are received, the UE ID, bearer ID, and UE permission information are associated and registered.

Next, as shown in FIG. 16A of the UE 70 received in S1306, the MME 10 transmits the UE ID, APN, bearer ID, and UE permission information to the HSS 20 (S1308). At this time, the UE ID includes “UE1”, the APN includes “Internet”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”.

In addition, as shown in FIG.16 (b), you may include UE ID, bearer ID, PDN connection, and permission information of UE. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”.

Also, as shown in FIG. 16C, the UE ID, bearer ID, and permission information of the UE may be included. At this time, the UE ID includes “UE1”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”.

The HSS 20 that has received the UE ID, APN, and UE permission information from the MME 10 registers the UE ID, the APN, and the UE permission information in the SIPTO permission information management table 252 in association with each other. When the UE ID, bearer ID, PDN connection, and UE permission information are received, the UE ID, bearer ID, PDN connection, and UE permission information are associated and registered. When the UE ID, bearer ID, and UE permission information are received, the UE ID, bearer ID, and UE permission information are associated and registered.

[1.3.2 Bearer change procedure]
Subsequently, the MME 10 starts a bearer change procedure (S1310). The MME 10 detects that all of the SIPTO permission information in the SIPTO permission information management table 152 is “permitted”, extracts the associated bearers, and performs a bearer change procedure for the extracted bearers. Determine the start of.

In this embodiment, it is detected that the permission information of the UE has been changed from “non-permitted” to “permitted”, and the bearer change procedure is performed when all the permission information is changed to “permitted”.

If multiple bearers associated with the APN or PDN connection are established, a bearer change procedure is performed for each.

The specific procedure will be described with reference to FIG. In the initial state, a PDN connection and a bearer are established between the PGW 40 and the UE 70, and communication is performed via the core network 3.

The MME 10 confirms that all permitted SIPTO permission information is permitted in the SIPTO permission information management table 152, and transmits a bearer change command to the SGW 30 (S1502). As a result, the MME 10 requests that the communication via the core network 3 be changed to the offloaded communication (SIPTO @ LN) via the broadband network 7 for communication. This request includes a request for gateway reselection for switching the communication that has been performed with the end point as the PGW 40 to the LGW 50.

Further, a request to delete the PDN connection and bearer between the PGW 40 and the UE 70 for communication via the core network 3 and to establish a PDN connection and bearer between the LGW 50 and the UE 70 for offloaded communication via the broadband network 7 Is also included.

As shown in FIG. 16, the bearer change command can notify the APN of the permission of the UE, or may notify the permission of the UE to the PDN connection. As a result, the MME 10 can change the communication via the core network 3 to off-load communication via the broadband network 7 (SIPTO @ LN) and request to perform communication in units of APN, or in units of PDN connections. It can also be requested.

SGW30 which received the bearer change command transmits a bearer change command to PGW40 (S1504). Here, SGW30 transmits the information received from MME10 to PGW40. In this way, the SGW 30 simply transfers the bearer change command from the MME 10 to the PGW 40.

The PGW 40 that has received the bearer change command transmits a bearer change request to the SGW 30, and requests to delete the PDN connection and bearer between the PGW 40 and the UE 70 for communication via the core network 3 (S1506).

As a result, the PGW 40 changes communication via the core network 3 to off-loaded communication via the broadband network 7 (SIPTO @ LN) for the APN, PDN connection or bearer according to the received bearer change command. Request to communicate. This request includes a request for gateway reselection for switching the communication that has been performed with the end point as the PGW 40 to the LGW 50.

SGW30 which received the bearer change request transmits a bearer change request including the received information to MME10 (S1508). In this way, the SGW 30 simply transfers the bearer change request from the PGW 40 to the MME 10.

Upon receiving the bearer change request, the MME 10 confirms that the communication via the core network 3 is changed to the offloaded communication (SIPTO @ LN) via the broadband network 7 and transmits a bearer change command to the LGW 50. (S1510). In response to this request, a request to change the gateway is made to the LGW 50 to switch the communication that has been performed with the end point as the PGW 40 to the LGW 50. This request includes a request for gateway reselection for switching the communication that has been performed with the end point as the PGW 40 to the LGW 50.

LGW50 which received the bearer change command transmits a bearer change request to MME10 (1512). Requests establishment of a PDN connection and bearer between the LGW 50 and the UE 70 for offloaded communication via the broadband network 7. MME10 which received the bearer change request confirms changing to SIPTO @ LN with respect to the APN, PDN connection, or bearer according to the received bearer change command.

The MME 10 that has received the bearer change request from the LGW 50 transmits the bearer change request to the HeNB (S1514). In the bearer change request, the APN, PDN connection, or bearer notified by the bearer change command transmitted to the PGW 40 or the LGW 50 is notified.

HeNB60 which received the bearer change request transmits the notification of the RRC connection reset in APN or PDN connection included in the bearer change request to UE70 (1516). Here, the HeNB 60 notifies the UE 70 of information on the APN, the PDN connection, or the bearer.

UE70 which received RRC connection resetting resets the set RRC connection based on an APN, a PDN connection, or a bearer. The UE 70 confirms that the reconfiguration of the RRC connection is completed, and transmits a notification of completion of the RRC connection reconfiguration to the HeNB 70 (S1518). The APN, PDN connection or bearer is included in the RRC connection reconfiguration completion notification.

The HeNB 60 that has received the RRC connection reconfiguration completion notification confirms that the RRC connection reconfiguration of the UE 70 corresponding to the APN, PDN connection, or bearer has been completed. Furthermore, HeNB60 confirms the change of the bearer from PGW40 to LGW50 in the APN or PDN connection included in the bearer change request transmitted from MME10 in S1514, and transmits a bearer change response to MME10 (S1520). Here, the APN, the PDN connection, or the bearer whose bearer has been changed is included in the bearer change response.

MME10 which received the bearer change response from HeNB60 confirms having changed into the bearer of HeNB60 and LGW50 from the bearer of HeNB60 and SGW40, and transmits a bearer change response to LGW30 (S1522). Here, the APN, PDN connection, or bearer whose bearer has been changed is included in the bearer change response. The LGW 50 that has received the bearer change confirms that the bearer corresponding to the APN or PDN connection has been changed.

Further, the MME 10 transmits a bearer change response to the SGW 30 (S1524). Here, the APN or PDN connection whose bearer has been changed is included in the bearer change response. The SGW 30 that has received the bearer change response confirms that the bearer corresponding to the APN or PDN connection has been changed.

SGW30 which confirmed that the bearer with HeNB60 was changed transmits a bearer change response to PGW40 (S1526). Here, the bearer-changed APN, PDN connection or bearer is included in the bearer change response. The PGW 40 that has received the bearer change response from the SGW 30 confirms that the bearer with the SGW 30 corresponding to the APN or PDN connection has been changed.

The bearer change procedure is completed by the above procedure. In this bearer change procedure, based on the permission information notified by the UE 70, the MME 10 determines to switch the communication via the core network 3 to the off-load communication via the broadband network 7, and instructs the PGW 40 and the LGW 50 to switch the communication path. Do.

In switching the communication path, the MME 10 reselects and switches the gateway from the PGW 40 used for communication via the core network 3 to the LGW 50 used for communication via the broadband network 7.

Furthermore, when switching the communication path, when establishing a PDN connection with the LGW 50 and the UE 70 used for communication (SIPTO @ LN) via the broadband network 7 as endpoints and communicating via the core network 3 The communication is performed by switching from the PDN connection with the PGW 40 and the UE 70 used in the above as endpoints. Here, the same identifier may be used for each PDN connection, or different identifiers may be assigned by the MME 10 and notified to the PGW 40, the HeNB 50, and the UE 70.

If the same device is used, the UE does not need to know that the PDN connection has been changed because the identifier of the PDN connection does not change. In that case, the bearer change request (S1514) transmitted from the MME 10 to the HeNB and the RRC connection resetting process (S1516, S1518) between the HeNB 60 and the UE 70 may not be performed. In this way, the processing can be simplified.

Furthermore, in switching the communication path, a bearer to be used when performing communication (SIPTO @ LN) via the broadband network 7 is established and switched from the bearer used when performing communication via the core network 3. Communicate. Here, the same bearer ID may be used, or different identifiers may be assigned by the MME 10 and notified to the LGW 50, the HeNB 60, and the UE 70.

If the same device is used, the UE does not need to know that the bearer has been changed because the bearer identifier does not change. In that case, the bearer change request (S1514) transmitted from the MME 10 to the HeNB and the RRC connection resetting process (S1516, S1518) between the HeNB 60 and the UE 70 may not be performed. In this way, the processing can be simplified.

Subsequently, the description returns to the bearer change procedure (S1310) in FIG. MME10 which received the bearer change response in S1520 in S1310 transmits a tracking area update acceptance notification to the UE 70 (S1334). The UE 70 that has received the tracking area update acceptance notification confirms that “permission” has been notified as SIPTO @ LN permission information, and transmits a tracking area update completion notification to the MME 10 (S1336).

As described above, the permission information of the SIPTO @ LN UE 70 is registered in the HSS 20 by [1.3.1 SIPTO @ LN “permission notification procedure by the UE] and [1.3.2 bearer change procedure]. , UEID, APN (or PDN connection), SIPTO @ LN permission information in UE70 associated with bearer ID, SIPTO @ LN permission information in mobile communication network operator, and SIPTO @ LN permission information in broadband network operator In each of them, “permitted” is registered, and it is possible to switch from data communication via the core network 3 to offload data communication via the broadband network.

These procedures are performed based on the permission information of the UE 70, and when the permission information of the UE is notified together with the APN, all communication using the APN is switched. Specifically, all PDN connections established using the APN or all bearers are switched.

In addition, when the permission information of the UE is notified together with the identifier of the PDN connection, switching is performed in units of PDN connections.

Furthermore, when the permission information of the UE is notified together with the bearer identifier, switching is performed in units of bearers.

[2. Second Embodiment]
Next, the second embodiment will be described. The mobile communication system in the present embodiment can use the same configuration as that described in the first embodiment. In addition, since the components (devices) of the core network 3, the broadband network 7, and the home network 5 can be used in the same manner, the description thereof is omitted.

In the second embodiment, in a state where the UE 70 is transmitting / receiving data via the core network 3 from the HeNB 60, the UE 70 is not permitted to transmit / receive permission information for data transmission / reception via the broadband network 7 (SIPTO @ LN). A procedure for transmitting and receiving data via the broadband network 7 (SIPTO @ LN) when the permission is changed will be described.

In the second embodiment, when the UE 70 starts data transmission, the UE 70 transmits a service request to be transmitted to the HeNB 60 (transmits a service request message), thereby transmitting the SIPTO @ LN permission information of the UE. Conventionally, the UE 70 starts a service request procedure in order to establish a new PDN connection. In this embodiment, however, in order to notify the communication permission / denial of SIPTO @ LN, the UE 70 is already isolated and communicating with the PDN. Initiate a service request procedure to change the connection.

When the UE 70 makes a service request to start communication, the UE 70 notifies the MME 10 of the permission information of the SIPTO @ LN UE and registers it in the HSS 20 by transmitting the permission information of the UE of the SIPTO @ LN. It becomes possible to switch from data transmission / reception via the core network 3 to data transmission / reception via the broadband network (SIPTO @ LN).

[2.1 Explanation of processing]
The processing described above will be described with reference to FIG. First, the UE 70 determines to change the permission information of SIPTO @ LN from “not permitted” to “permitted” (S2002).

Note that the permission information of the UE 70 may be notified after confirming that the permission information of the broadband network operator and the permission information of the mobile communication network operator are “permitted”. The permission information of the broadband network operator and the permission information of the mobile communication network operator are notified in advance by the MME 10 or the HSS 20 to the UE 70, and the UE 70 retains the received information.

Alternatively, the UE 70 may not hold the permission information of the broadband network operator and the permission information of the mobile communication network operator. In this case, the UE 70 notifies the permission information of the UE 70 without confirming the permission information of the broadband network operator and the permission information of the mobile communication network operator.

UE 70 makes a service request to HeNB 60 (S2004). The trigger of transmission detects that the permission information of UE70 is updated by manual operation by the user. Here, sending a service request means sending a service request message. For example, a service request message is sent from the UE 70 to the HeNB 60.

At this time, as shown in FIG. 19A, the UE 70 includes the UE ID, the APN, the bearer ID, and the permission information of the UE in the service request message. At this time, the UE ID includes “UE1”, the APN includes “Internet”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”.

Here, as shown in FIG. 19B, the service request message may include a UE ID, a PDN connection, a bearer ID, and UE permission information. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”. Or as shown in FIG.19 (c), you may include UE ID, bearer ID, and permission information of UE.

HeNB60 which received the service request message from UE70 transmits a service request message to MME10 (S2006). At this time, as shown in FIG. 20A, the HeNB 60 includes the UE ID, the APN, the bearer ID, and the permission information of the UE in the service request message. At this time, the UE ID includes “UE1”, the APN includes “Internet”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”.

Here, as shown in FIG. 20B, the service request message may include a UE ID, a PDN connection, a bearer ID, and permission information of the UE. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”. Or as shown in FIG.20 (c), you may include UE ID, bearer ID, and the permission information of UE.

Furthermore, the MME 10 transmits a notification of permission information of the UE to the HSS 20 (S2008). Here, the notification of the permission information of the UE is transmitted by transmitting a permission information notification message of the UE.

Here, as shown in FIG. 21A, the MME 10 includes the UE permission information message including the UE ID, the APN, the bearer ID, and the UE permission information.

At this time, the UE ID includes “UE1”, the APN includes “Internet”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”. Here, as shown in FIG. 21B, the UE permission information message may include a UE ID, a PDN connection, a bearer ID, and UE permission information. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, the bearer ID includes “bearer 1”, and the permission information of the UE includes “permitted”. Or as shown in FIG.21 (c), you may include UE ID, bearer ID, and the permission information of UE in the permission information notification message of UE.

The HSS 20 that has received the UE ID, APN, and UE permission information from the MME 10 registers the UE ID, the APN, and the UE permission information in the SIPTO permission information management table 252 in association with each other. Here, when the HSS 20 receives the UE ID, the PDN connection, and the UE permission information from the MME 10, the UE ID, the PDN connection, and the UE permission information are stored in the SIPTO permission information management table 252. sign up.

When the UE ID, bearer ID, PDN connection, and UE permission information are received, the UE ID, bearer ID, PDN connection, and UE permission information are registered in association with each other. When the UE ID, bearer ID, and UE permission information are received, the UE ID, bearer ID, and UE permission information are associated and registered.

Subsequently, the UE 70 starts a bearer change procedure (S2010). The MME 10 detects that all of the SIPTO permission information in the SIPTO permission information management table is “permitted”, extracts the associated bearers, and performs a bearer change procedure on the extracted bearers. Decide to start.

If multiple bearers associated with the APN or PDN connection are established, a bearer change procedure is performed for each. This bearer change procedure is performed by the procedure shown in FIG. 17 of the first embodiment. Thus, since the bearer change procedure itself is the same as that of the first embodiment, the description thereof is omitted.

After the bearer change procedure is completed, according to the conventional service start procedure, the MME 10 transmits a context setting request to the HeNB 60 (S2012), the HeNB 60 and the UE 70 perform radio bearer setting (S2014), and the HeNB 60 notifies the MME 10 of the context completion notification. Is transmitted (S2016). Thereby, although the radio bearer between UE70 and HeNB60 is established, since the bearer is established within the bearer change procedure demonstrated by S2010, these procedures do not need to be performed.

Through the above procedure, by making a service request when starting data communication, SIPTO @ LN permission information in the UE 70 associated with the UE ID, APN (or PDN connection) and bearer ID, and broadband In the permission information of SIPTO @ LN in the network operator, “permitted” is registered, and the UE 70 does not perform data communication from the HeNB 60 via the core network 3 but data communication from the HeNB 60 via the broadband network 7 (SIPTO @ LN communication) can be performed.

Further, when the permission information of the UE 70 is notified together with the identifier of the PDN connection, switching is performed in units of PDN connections.

Furthermore, when the permission information of the UE 70 is notified together with the bearer identifier, switching is performed in units of bearers.

[3. Third Embodiment]
Next, a third embodiment will be described. In the third embodiment, when the UE 70 changes the SIPTO @ LN permission information of the UE 70 from “permitted” to “non-permitted” in a state where data is transmitted and received from the HeNB 60 via the broadband network, via the broadband network 7. A procedure for changing from a state of transmitting / receiving data (SIPTO @ LN) to a state of transmitting / receiving data via the core network 3 is shown.

The mobile communication system in the present embodiment can use the same configuration as that described in the first embodiment. In addition, since the components (devices) of the core network 3, the broadband network 7, and the home network 5 can be used in the same manner, the description thereof is omitted.

In FIG. 22, when the UE 70 changes SIPTO @ LN from “permitted” to “non-permitted”, the UE 70 transmits a tracking area update request message, so that the user sends the mobile network operator to the mobile network operator from the HeNB 60 to the core network 3. The fact that data communication is desired is notified via the HSS 20 (the permission information of the UE 70 is updated to “not permitted”).

Conventionally, the UE 70 starts the tracking area update procedure only in an idle state in which communication is not performed. However, in this embodiment, in order to notify the SIPTO @ LN communication permission / denial, tracking is performed in an active state during communication. Start the area update procedure. The tracking area update procedure is as described in FIG.

That is, the UE 70 transmits a tracking area update request message to the HeNB 60 and notifies the permission information of the UE 70 (S1304). The trigger of transmission detects that the permission information of UE70 is updated by manual operation by the user. At this time, as shown in FIG. 14A, the UE 70 transmits the tracking area update request message including the UE ID, the APN, and the UE permission information. In addition, as shown in FIG.14 (b), you may include UE ID, APN, and permission information of UE in a tracking area update request message. Or as shown in FIG.14 (c), you may include UE ID, bearer ID, and permission information of UE.

Subsequent transmission of the tracking area update request message of HeNB60 (S1306), notification of permission information of UE of MME10 (S1308), and processing of HeNB60, MME10, and HSS20 related to transmission / reception thereof are the same as in the first embodiment. Therefore, detailed description is omitted. The difference from the first embodiment is that the HeNB 60 and the MME 10 transmit the permission information of the UE included in the message as “non-permitted”.

(Bearer change procedure)
Subsequently, the MME 10 starts a bearer change procedure (S1310 in FIG. 13). The MME 10 detects that one of the SIPTO permission information in the SIPTO permission information management table is “not permitted”, extracts the associated bearer, and starts the bearer change procedure for the extracted bearer To decide.

In this embodiment, it is detected that the permission information of the UE has been changed from “permitted” to “not permitted”, and the bearer change procedure is performed when all the permission information is not “permitted”.

The specific procedure will be described with reference to FIG. In an initial state, a PDN connection and a bearer are established between the LGW 50 and the UE 70, and offloaded communication via the broadband network is performed.

The MME 10 confirms that any of the permission information in the SIPTO permission information management table is not permitted, and transmits a bearer change command to the LGW 50 (S3002). As a result, the MME 10 requests the HeNB 60 to change the communication via the broadband network 7 (SIPTO @ LN) to the communication via the core network 3 and perform communication. This request also includes a request for gateway reselection for switching the communication that has been performed with the end point as the LGW 50 to the PGW 40.

Further, a request to delete the PDN connection and bearer between the LGW 50 and the UE 70 for the offloaded communication via the broadband network 7 and to establish the PDN connection and bearer between the PGW 40 and the UE 70 for the communication via the core network 3 Is also included.

As shown in FIG. 16, the bearer change command can notify the APN of the permission of the UE, or may notify the permission of the UE to the PDN connection. As a result, the MME 10 can request that the communication from the HeNB 60 via the broadband network 7 (SIPTO @ LN) is changed to the communication via the core network 3 and perform communication in units of APN, or request in units of PDN connections. You can also

The LGW 50 that has received the bearer change command transmits a bearer change request to the MME 10, and requests to change the PDN connection and bearer between the LGW 50 and the UE 70 for offloaded communication via the broadband network 7 (S3004).

Thereby, the LGW 50 changes communication from the HeNB 60 via the broadband network 7 (SIPTO @ LN) to communication via the core network 3 for the APN, PDN connection or bearer according to the received bearer change command. Request to do. This request also includes a request for gateway reselection for switching the communication that has been performed with the end point as the LGW 50 to the PGW 40.

Upon receiving the bearer change request, the MME 10 confirms that the communication via the broadband network 7 (SIPTO @ LN) is changed from the HeNB 60 to the communication via the core network 3, and transmits a bearer change command to the SGW 30 ( S3006). In response to this request, a gateway change request is made to the LGW 50 to switch the communication that has been performed with the LGW 50 as the end point to the PGW 40.

SGW30 which received the bearer change command transmits a bearer change command to PGW40 (S3008). Here, SGW30 transmits the information received from MME10 to PGW40. In this way, the SGW 30 simply transfers the bearer change command from the MME 10 to the PGW 40.

PGW40 which received the bearer change command transmits a bearer change request to SGW30 (S3010). Accordingly, the PGW 40 requests the APN, PDN connection, or bearer corresponding to the received bearer change command to change the communication of SIPTO @ LN to SIPTO @ CN and perform communication. This request also includes a request for gateway reselection for switching the communication that has been performed with the end point as the LGW 50 to the PGW 40.

The SGW 30 that has received the bearer change request transmits the bearer change request to the MME 10 including the received information (S3012). In this way, the SGW 30 simply transfers the bearer change request from the PGW 40 to the MME 10.

The MME 10 receives the bearer change request from the SGW 30 and transmits the bearer change request to the HeNB (S3014). In the bearer change request, the APN, PDN connection, or bearer notified by the bearer change command transmitted to the PGW 40 or the LGW 50 is notified.

HeNB60 which received the bearer change request transmits the notification of the RRC connection reset in the APN, PDN connection, or bearer included in the bearer change request to UE70 (S3016). Here, the HeNB 60 notifies the UE 70 of information on the APN, the PDN connection, or the bearer.

UE70 which received RRC connection resetting resets the set RRC connection based on an APN, a PDN connection, or a bearer. The UE 70 confirms that the reconfiguration of the RRC connection is completed, and transmits a notification of completion of the RRC connection reconfiguration to the HeNB 70 (S3018). The APN, PDN connection or bearer is included in the RRC connection reconfiguration completion notification.

The HeNB 60 that has received the RRC connection reconfiguration completion notification confirms that the RRC connection reconfiguration of the UE 70 corresponding to the APN or PDN connection has been completed. Further, the HeNB 60 confirms the bearer change from the LGW 50 to the PGW 40 in the APN, PDN connection or bearer included in the bearer change request transmitted from the MME 10 in S3014, and transmits a bearer change response to the MME 10 (S3020). . Here, the APN, the PDN connection, or the bearer whose bearer has been changed is included in the bearer change response.

MME10 which received the bearer change response from HeNB60 confirms having changed into the bearer of HeNB60 and LGW50 from the bearer of HeNB60 and SGW40, and transmits a bearer change response to LGW30 (S3022). Here, the APN or PDN connection in which the bearer is changed is included in the bearer change response. The LGW 50 that has received the bearer change confirms that the bearer corresponding to the APN or PDN connection has been changed.

Further, the MME 10 transmits a bearer change response to the SGW 30 (S3024). Here, the bearer-changed APN, PDN connection or bearer is included in the bearer change response. The SGW 30 that has received the bearer change response confirms that the bearer corresponding to the APN, the PDN connection, or the bearer has been changed.

SGW30 which confirmed that the bearer with HeNB60 was changed transmits a bearer change response to PGW40 (S3026). Here, the bearer-changed APN, PDN connection or bearer is included in the bearer change response. The PGW 40 that has received the bearer change response from the SGW 30 confirms that the bearer with the SGW 30 corresponding to the APN, PDN connection, or bearer has been changed.

The bearer change procedure is completed by the above procedure. In this bearer change procedure, based on the permission information notified by the UE 70, the MME 10 determines to switch the communication by the offload via the broadband network 7 to the communication via the core network 3, and instructs the PGW 40 and the LGW 50 to switch the communication path. Do.

In switching the communication path, the MME 10 reselects and switches the gateway from the LGW 50 used for communication via the broadband network 7 to the PGW 40 used for communication via the core network 3.

Furthermore, when switching the communication path, when establishing a PDN connection with the PGW 40 and the UE 70 used for communication via the core network 3 as endpoints and performing communication via the broadband network 7 (SIPTO @ LN) Communication is performed by switching from the PDN connection with the used LGW 50 and UE 70 as endpoints. Here, the same identifier may be used for each PDN connection, or a different identifier may be assigned by the MME 10 and notified to the PGW 50, the HeNB 50, and the UE 70.

If the same device is used, the UE does not need to know that the PDN connection has been changed because the identifier of the PDN connection does not change. In that case, the bearer change request (S3014) transmitted from the MME 10 to the HeNB and the RRC connection resetting process (S3016, S3018) between the HeNB 60 and the UE 70 may not be performed. In this way, the processing can be simplified.

Furthermore, in switching the communication path, a bearer to be used when performing communication (SIPTO @ LN) via the broadband network 7 is established, and switching from the bearer used when performing communication via the core network 3 is performed. Communicate. Here, the identifier of each bearer may use the same thing, and MME10 may allocate a different identifier and may notify PGW40, HeNB50, and UE70.

If the same device is used, the UE does not need to know that the bearer has been changed because the bearer identifier does not change. In that case, the bearer change request (S3014) transmitted from the MME 10 to the HeNB and the RRC connection resetting process (S3016, S3018) between the HeNB 60 and the UE 70 may not be performed. In this way, the processing can be simplified.

Since the procedure after the bearer change procedure (S1310) in FIG. 13 is the same as that in the first embodiment, description thereof is omitted.

Through the above procedure, the permission information of the SIPTO @ LN UE 70 is registered in the HSS 20, and the SIP TO @ LN permission information in the UE 70 associated with the UE ID, APN (or PDN connection), and bearer ID in the HSS 20, the mobile communication network In the permission information of SIPTO @ LN at the carrier and the permission information of SIPTO @ LN at the broadband network operator, the permission information of the UE is in a state where “not permitted” is registered, and data that has been offloaded via the broadband network 7 Communication can be switched to data communication via the core network 3.

[4. Fourth Embodiment]
Next, a fourth embodiment will be described. The mobile communication system in the present embodiment can use the same configuration as that described in the second embodiment. In addition, since the components (devices) of the core network 3, the broadband network 7, and the home network 5 can be used in the same manner, the description thereof is omitted.

In the fourth embodiment, in a state where the UE 70 is transmitting / receiving data via the broadband network 7 (SIPTO @ LN) from the HeNB 60, the UE 70 is permitted to transmit / receive data via the broadband network 7 (SIPTO @ LN). A procedure for transmitting and receiving data via the core network 3 when the information is changed from permitted to not permitted will be described.

In 4th Embodiment, when UE70 starts data transmission, UE70 will transmit the permission information of SIPTO @ LN of UE by making the service request which transmits to HeNB60. Conventionally, the UE 70 starts a service request procedure in order to establish a new PDN connection. In this embodiment, however, in order to notify the communication permission / denial of SIPTO @ LN, the UE 70 is already isolated and communicating with the PDN. Initiate a service request procedure to change the connection.

When the UE 70 makes a service request to start communication, the UE 70 notifies the MME 10 of the permission information of the SIPTO @ LN UE and registers it in the HSS 20 by transmitting the permission information of the UE of the SIPTO @ LN. It becomes possible to switch from data transmission / reception via the broadband network (SIPTO @ LN) 7 to data transmission / reception via the core network.

The processing described above will be described with reference to FIG. First, the UE 70 determines to change the permission information of SIPTO @ LN from “permitted” to “not permitted” (S2002).

UE 70 transmits a service request message to HeNB 60 (S2004). The trigger of transmission detects that the permission information of UE70 is updated by manual operation by the user. At this time, as shown in FIG. 19A, the UE 70 includes the UE ID, the APN, and the permission information of the UE in the service request message. At this time, the UE ID includes “UE1”, the APN includes “Internet”, and the permission information of the UE includes “not permitted”.

Here, as shown in FIG. 19B, the service request message may include a UE ID, a PDN connection, and UE permission information. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, and the UE permission information includes “non-permitted”. Or as shown in FIG.19 (c), you may include UE ID, bearer ID, and permission information of UE.

Thereby, the UE 70 requests that the communication via the broadband network 7 (SIPTO @ LN) be switched to the communication via the core network 3. This request can be requested in units of APN by notifying the APN together, can also be requested in units of PDN connection by notifying the PDN connection identifier, and the bearer ID is also notified. This can be requested in bearer units.

HeNB60 which received the service request message from UE70 transmits a service request message to MME10 (S2006). At this time, as shown in FIG. 20A, the HeNB 60 includes the UE ID, the APN, and the permission information of the UE in the service request message. At this time, the UE ID includes “UE1”, the APN includes “Internet”, and the permission information of the UE includes “not permitted”.

Here, as shown in FIG. 20B, the service request message may include a UE ID, a PDN connection, and UE permission information. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, and the UE permission information includes “non-permitted”. Or as shown in FIG.20 (c), you may include UE ID, bearer ID, and permission information of UE.

The MME 10 that has received the UE ID, APN, and UE permission information registers the UE ID, APN, and UE permission information in association with each other in the SIPTO permission information management table. When the UE ID, bearer ID, PDN connection, and UE permission information are received, the UE ID, bearer ID, PDN connection, and UE permission information are associated and registered. When the UE ID, bearer ID, and UE permission information are received, the UE ID, bearer ID, and UE permission information are associated and registered.

MME10 which received the service request message from HeNB60 transmits the notification of the permission information of UE to HSS20 (S2008). Here, the notification of the permission information of the UE is transmitted by transmitting a permission information notification message of the UE.

Here, as shown in FIG. 21 (a), the MME 10 transmits the UE permission information notification message including the UE ID, the APN, and the UE permission information. At this time, the UE ID includes “UE1”, the APN includes “Internet”, and the permission information of the UE includes “not permitted”.

Here, as shown in FIG. 21B, the UE permission information notification message may include the UE ID, the PDN connection, and the UE permission information. At this time, the UE ID includes “UE1”, the PDN connection includes “PDN connection 1”, and the UE permission information includes “non-permitted”. Or as shown in FIG.21 (c), you may include UE ID, bearer ID, and the permission information of UE in the permission information notification message of UE.

When the UE ID, bearer ID, PDN connection, and UE permission information are received, the UE ID, bearer ID, PDN connection, and UE permission information are associated and registered. When the UE ID, bearer ID, and UE permission information are received, the UE ID, bearer ID, and UE permission information are associated and registered.

Subsequently, the UE 70 starts a bearer change procedure (S2010). The MME 10 detects that all of the SIPTO permission information in the SIPTO permission information management table is not “permitted”, extracts the associated bearer, and performs a bearer change procedure for the extracted bearer Determine the start of.

In this embodiment, it is detected that the permission information of the UE has been changed from “permitted” to “not permitted”, and all the permission information is not “permitted” (any of the SIPTO permission information is not permitted). Permission), bearer change procedure.

If multiple bearers associated with the APN or PDN connection are established, a bearer change procedure is performed for each. This bearer change procedure is performed according to the procedure shown in FIG. Since the bearer change procedure is the same as that of the third embodiment, the description thereof is omitted.

After the bearer change procedure is completed, according to the conventional service start procedure, the MME 10 transmits a context setting request to the HeNB 60 (S2012), the HeNB 60 and the UE 70 perform radio bearer setting (S2014), and the HeNB 60 sends a context completion notification to the MME 10. Transmit (S2016). Thereby, although the radio bearer between UE70 and HeNB60 is established, since the bearer is established within the bearer change procedure demonstrated by S2010, these procedures do not need to be performed.

Through the above procedure, by making a service request when starting data communication, SIPTO @ LN permission information in the UE 70 associated with the UE ID, APN (or PDN connection) and bearer ID, and broadband “Permitted” is registered in any permission information in SIPTO @ LN in the network operator, and the UE 70 does not perform data communication from the HeNB 60 via the broadband network 7 but data communication from the HeNB 60 via the core network 3. (SIPTO @ LN) can be performed.

[5. Modified example]
The embodiment described above is an embodiment exemplified for explaining the present invention, and the specific configuration is not limited to this embodiment, and the design and the like without departing from the gist of the present invention are also claimed. Of course, it is included in the range.

Further, the notification method of the permission information of the UE may be performed using another means regardless of the method described above. For example, the UE 70 may notify the MME 10 by including it in the NAS signaling message that is transmitted and received at the interface between the UE 70 and the MME 10. Of course, other means that the UE 70 can transmit to the MME 10 may be used regardless of the NAS signaling message.

Alternatively, the UE 70 may notify the HSS 20 directly. The HSS 20 notifies the received information to the MME 10 so that the MME 10 can register the permission information of the UE in the SIPTO permission information management table.

By such a method, the permission information of the UE 70 can be registered in the SIPTO permission information management table 152 by the MME 10 and in the SIPTO permission information management table 252 by the HSS 20.

Thereby, thereafter, the MME 10 can refer to the SIPTO permission information management table 152 and perform a bearer change procedure based on the permission information.

When all the permission information is “permitted”, it is determined whether or not the communication is offloaded via the broadband network 7.

A bearer that switches a communication path via the core network 3 to a communication path (SIPTO @ LN) that is offloaded via the broadband network 7 when the communication is not offloaded via the broadband network 7 (SIPTO @ LN). Change procedures can be performed. If all the permission information is not “permitted”, it is determined whether or not the communication is offloaded via the broadband network 7.

A bearer for switching a communication path (SIPTO @ LN) offloaded via the broadband network 7 to a communication path via the core network 3 when performing offloaded communication (SIPTO @ LN) via the broadband network 7 Change procedures can be performed.

In each embodiment, the program that operates in each device is a program that controls the CPU or the like (a program that causes a computer to function) so as to realize the functions of the above-described embodiments. Information handled by these devices is temporarily stored in a temporary storage device (for example, RAM) at the time of processing, then stored in various ROM or HDD storage devices, and read and corrected by the CPU as necessary. • Writing is performed.

Here, as a recording medium for storing the program, a semiconductor medium (for example, ROM, a non-volatile memory card, etc.), an optical recording medium / a magneto-optical recording medium (for example, DVD (Digital Versatile Disc), MO (Magneto Optical) Disc), MD (Mini Disc), CD (Compact Disc), BD, etc.), magnetic recording medium (eg, magnetic tape, flexible disk, etc.), etc. In addition, by executing the loaded program, not only the functions of the above-described embodiment are realized, but also based on the instructions of the program, the processing is performed in cooperation with the operating system or other application programs. The functions of the invention may be realized.

In addition, when distributing to the market, the program can be stored in a portable recording medium for distribution, or transferred to a server computer connected via a network such as the Internet. In this case, of course, the storage device of the server computer is also included in the present invention.

Moreover, you may implement | achieve part or all of each apparatus in embodiment mentioned above as LSI (Large Scale Integration) which is typically an integrated circuit. Each functional block of each device may be individually formed as a chip, or a part or all of them may be integrated into a chip. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, it is of course possible to use an integrated circuit based on this technology.

In each embodiment, the bearer change procedure started by the MME 10 has been described in detail. For example, the notification information of the UE is verbally communicated to the network operator, the network operator registers with the HSS 20, and the HSS 20 registers with the MME 10. By notifying the permission information, the MME 10 may start a bearer change procedure.

Alternatively, the UE has a means for notifying the permission information to the HSS 20 by direct communication. The HSS 20 notifies the permission information of the UE registered in the MME 10 after the permission information is registered, and the MME 10 starts the bearer change procedure. Also good.

Thus, the MME 10 is not limited to the start of the bearer change procedure, and it is a matter of course that the design and the like within the scope not departing from the gist of the invention are included in the scope of the claims.

1 Mobile communication system 3 Core network 10 MME
DESCRIPTION OF SYMBOLS 100 Control part 110 Transmission / reception part 150 Storage part 152 SIPTO permission information management table 20 HSS
200 Control Unit 210 Transmission / Reception Unit 250 Storage Unit 252 SIPTO Permission Information Management Table 25 GW
30 SGW
300 Control unit 310 First transmission / reception unit 320 Second transmission / reception unit 350 Storage unit 352 SIPTO permission information management table 40 PGW
5 Home network 50 LGW
500 Control Unit 510 Core Network Interface Unit 520 Broadband Network Interface Unit 530 Home Network Interface Unit 540 Local IP Address Generation Unit 550 Storage Unit 552 SGW Address 554 External Address 556 Local IP Address 60 HeNB
600 Control unit 610 LTE base station unit 612 Antenna 620 Home network interface unit 650 Storage unit 652 SIPTO permission information management table 70 UE
700 Control Unit 710 LTE Interface Unit 712 Antenna 750 Storage Unit 752 SIPTO Permission Information Management Table 7 Broadband Network

Claims

A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile station apparatus connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
When the mobile station apparatus performs data communication on the first communication path, the location management apparatus transmits permission information for switching to the second communication path to the position management apparatus via the home base station apparatus. A mobile station apparatus characterized by the above.
The mobile station apparatus according to claim 1, wherein the permission information is included in a tracking area update request message and transmitted to a home base station.
The mobile station apparatus according to claim 1, wherein the permission information is included in a service request message and transmitted to a home base station.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a location management device connected to a mobile communication system including the home network and a broadband network connected to the core network and an external network,
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information of the mobile station apparatus to be switched to the second communication path from the mobile station apparatus performing data communication on the first communication path;
A location management device that instructs the LGW to switch from the first communication path to the second communication path based on the received permission information.
The location management apparatus according to claim 4, wherein the permission information is included in a received tracking area update request message.
The location management apparatus according to claim 4, wherein the permission information is included in a received service request message.
Network operator permission information is registered,
When the received permission information of the mobile station apparatus is permission and the permission information of the network operator is permission, an instruction to switch the position management apparatus from the first communication path to the second communication path The position management device according to any one of claims 4 to 6, wherein
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In an LGW connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
SIP communication permission information includes a first communication path through which the mobile station apparatus performs data communication via a core network and a second communication path (SIPTO @ LN) through which the mobile station apparatus performs data communication via a broadband network. Switchable based on
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. LGW characterized by switching to a route.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile station apparatus connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
When the mobile station apparatus performs data communication on the second communication path, the location management apparatus transmits permission information for switching to the first communication path to the position management apparatus via the home base station apparatus. A mobile station apparatus.
The mobile station apparatus according to claim 1, wherein the permission information is included in a tracking area update request message and transmitted to a home base station.
The mobile station apparatus according to claim 1, wherein the permission information is included in a service request message and transmitted to a home base station apparatus.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a location management device connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
A location management device that instructs the LGW to switch from the second communication path to the first communication path based on the received permission information.
The location management apparatus according to claim 12, wherein the permission information is included in a received tracking area update request message.
The location management apparatus according to claim 12, wherein the permission information is included in a received service request message.
A home network including a mobile station device, a home base station to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In an access control apparatus connected to a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device
An access control apparatus that secures a first communication path of the mobile station apparatus based on an instruction from the location management apparatus.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
The mobile station device
Mobile communication characterized in that, when data communication is performed through a first communication path, the location management apparatus transmits permission information for switching to the second communication path to the position management apparatus via the home base station apparatus. system.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information of the mobile station apparatus to be switched to the second communication path from the mobile station apparatus performing data communication on the first communication path;
A mobile communication system characterized by instructing the LGW to switch from a first communication path to a second communication path based on received permission information.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The LGW includes a first communication path in which the mobile station apparatus performs data communication via the core network, and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network; Can be switched based on SIPTO permission information,
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. A mobile communication system, wherein the LGW switches to a route.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
The mobile station device transmits permission information for the location management device to switch to the first communication route to the location management device via the home base station device when performing data communication on the second communication route. A mobile communication system.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
A mobile communication system characterized by instructing the LGW to switch from the second communication path to the first communication path based on the received permission information.
A home network including a mobile station device, a home base station to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information for switching to the first communication path from the mobile station device performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device secures a first communication path of the mobile station device based on an instruction from the location management device.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
The mobile station device
When performing data communication on the first communication path, the location management device transmits permission information for switching to the second communication path to the home base station,
The location management device includes:
Receiving from the home base station permission information of the mobile station apparatus to switch to the second communication path from the mobile station apparatus performing data communication on the first communication path;
Based on the received permission information, instruct the LGW to switch from the first communication path to the second communication path,
The LGW is
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. A mobile communication system characterized by switching to a route.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication system including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information for switching to the first communication path from the home base station apparatus from the mobile station apparatus performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device secures a first communication path of the mobile station device based on an instruction from the location management device.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication method including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
The mobile station device
When performing data communication on the first communication path, the location management device transmits permission information for switching to the second communication path to the home base station,
The location management device includes:
Receiving from the home base station permission information of the mobile station apparatus to switch to the second communication path from the mobile station apparatus performing data communication on the first communication path;
Based on the received permission information, instruct the LGW to switch from the first communication path to the second communication path,
The LGW is
When the mobile station apparatus that is performing data communication on the first communication path receives an instruction from the position management apparatus to switch to the second communication path, the communication path of the mobile station apparatus is changed from the first communication path to the second communication path. A mobile communication method characterized by switching to a route.
A home network including a mobile station device, a home base station device to which the mobile station device is connected, and an LGW (Local Gateway);
A core network connected to an external network including a location management device and an access control device;
In a mobile communication method including the home network, the core network, and a broadband network connected to an external network,
The location management device includes:
SIPTO permission information indicating a first communication path in which the mobile station apparatus performs data communication via the core network and a second communication path (SIPTO @ LN) in which the mobile station apparatus performs data communication via a broadband network. Is switchable based on
Receiving permission information for switching to the first communication path from the home base station apparatus from the mobile station apparatus performing data communication on the second communication path;
Instructing the LGW and the access control device to switch from the second communication path to the first communication path based on the received permission information,
The access control device secures a first communication path of the mobile station device based on an instruction from the location management device.