JP2011259124A - Service providing system, service providing method, service providing continuation determination device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a service providing system capable of preventing provision of an application to a mobile station device from being interrupted.SOLUTION: A system 100 is configured to transmit and receive information for providing an application service to a mobile station device to and from the mobile station device wirelessly communicably connected to a base station device. The system stores base station identification information and available service identification information for identifying the application service which can be provided via the base station device with being associated with each other. The system, if accepting a handover processing request from the base station device, determines whether it is possible or not to continue to provide the application service to the mobile station device via the base station device of a handover destination based on the information stored in the system. If determined the continuation is possible, the system permits the handover processing to be performed.

Description

  The present invention relates to a service providing system that provides an application service to a mobile station apparatus.

  In 3GPP (Third Generation Partnership Project), which is an international standardization organization for mobile communication systems, standardization of IMS (IP Multimedia Subsystem) is being promoted as a technology for providing multimedia services on the IP (Internet Protocol) platform. Yes.

  By introducing IMS, a plurality of application services such as voice communication, instant messenger (IM) and content download can be simultaneously provided to the same mobile station apparatus (user terminal). It becomes possible.

  In IMS, a Session Initiation Protocol (SIP) is used as a technique for managing sessions related to these application services. A session is established to transmit and receive information for providing application services. For example, a service providing system described in Patent Document 1 is known as a service providing system using IMS.

JP 2009-225217 A

  By the way, a mobile communication system often performs communication between a mobile station apparatus and a base station apparatus using a cell system. Therefore, the mobile communication system executes a handover process between adjacent base station apparatuses. Thereby, the base station apparatus which becomes a communicating party of a mobile station apparatus changes.

  In addition, a radio access network (RAN), which is a communication network between the mobile station apparatus and the base station apparatus, sequentially increases from 3G (Third Generation) to 3.5G, 3.9G, and 4G. The communication method is shifted. In addition, WLAN (Wireless Local Area Network) may be used as a radio access network. That is, the available communication method may be different for each base station apparatus.

  In addition, a communication method capable of transmitting and receiving information for providing the application service may be different for each application service. For example, an application service for performing voice communication can be provided using 3G, 3.5G, or WLAN, and an application service for realizing IM can be provided using 3G. A situation is assumed.

  Therefore, when the service providing system is applied to a mobile communication system, when a handover process is executed, a communication method that can be used in the handover source base station apparatus and a handover destination base station apparatus can be used. The communication method may be different.

  In such a case, the service providing system may not be able to continue providing the application service to the mobile station device via the handover destination base station device after executing the handover process. That is, the service providing system has a problem that the provision of application services to the mobile station apparatus may be interrupted.

  For this reason, an object of the present invention is to provide a service providing system capable of solving the above-described problem that “the provision of application services to mobile station apparatuses may be interrupted”. .

In order to achieve such an object, a service providing system according to one aspect of the present invention includes:
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Configured to send and receive information
Provideable service identification for storing the base station identification information for identifying the base station apparatus and the provideable service identification information for identifying the application service that can be provided via the base station apparatus in association with each other Information storage means;
When the handover process request for requesting execution of the handover process for the mobile station apparatus is received from the base station apparatus, the provision stored in association with the base station identification information for identifying the handover destination base station apparatus By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Service provision continuation determining means for determining whether or not it is possible to continue providing the application service to the mobile station device via
When it is determined that it is possible to continue providing the application service to the mobile station apparatus via the handover destination base station apparatus, the handover process is allowed to be performed. A handover process execution control means for prohibiting execution of the handover process when it is determined that it is impossible to continue providing the application service to the mobile station apparatus via the apparatus;
Is provided.

A service providing method according to another aspect of the present invention includes:
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Applied to service delivery systems configured to send and receive
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via the base station identification information for identifying the base station apparatus and the base station apparatus The above provision stored in association with the base station identification information for identifying the handover destination base station device in the storage device for associating and storing the available service identification information for identifying the application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via
When it is determined that it is possible to continue providing the application service to the mobile station apparatus via the handover destination base station apparatus, the handover process is allowed to be performed. This is a method of prohibiting execution of the handover process when it is determined that it is impossible to continue providing the application service to the mobile station device via the device.

In addition, a service provision continuation determination device according to another aspect of the present invention is provided.
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Configured to send and receive information
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via the base station identification information for identifying the base station apparatus and the base station apparatus The above provision stored in association with the base station identification information for identifying the handover destination base station device in the storage device for associating and storing the available service identification information for identifying the application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via Configured.

Moreover, the program which is the other form of this invention is:
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. To an information processing device configured to send and receive
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via the base station identification information for identifying the base station apparatus and the base station apparatus The above provision stored in association with the base station identification information for identifying the handover destination base station device in the storage device for associating and storing the available service identification information for identifying the application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via Is a program for realizing the service providing continuation determining means.

  According to the present invention configured as described above, it is possible to prevent the provision of application services to the mobile station apparatus from being interrupted.

1 is a diagram illustrating a schematic configuration of a mobile communication system according to a first embodiment of the present invention. It is a block diagram showing the outline of the function of the service provision system which concerns on 1st Embodiment of this invention. It is the figure which showed the table which matched the base station identification information and communication system identification information which the application server which concerns on 1st Embodiment of this invention memorize | stores. It is the figure which showed the table which matched the service identification information and communication system identification information which the application server which concerns on 1st Embodiment of this invention memorize | stores. It is the figure which showed the table which matched the base station identification information and providable service identification information which the application server which concerns on the modification of 1st Embodiment of this invention memorize | stores. It is the figure which showed the table which matched the mobile station identification information and service identification information which the application server which concerns on 1st Embodiment of this invention memorize | stores. It is the sequence diagram which showed the action | operation of the service provision system which concerns on 1st Embodiment of this invention. It is the sequence diagram which showed the action | operation of the service provision system which concerns on 1st Embodiment of this invention. It is the sequence diagram which showed the action | operation of the service provision system which concerns on 1st Embodiment of this invention. It is the figure which showed the table which matched the mobile station identification information and base station identification information which the application server which concerns on 2nd Embodiment of this invention memorize | stores. It is a block diagram showing the outline of the function of the service provision system which concerns on 3rd Embodiment of this invention.

  Hereinafter, embodiments of a service providing system, a service providing method, a service providing continuation determination device, and a program according to the present invention will be described with reference to FIGS.

<First Embodiment>
(Constitution)
As shown in FIG. 1, the mobile communication system 1 according to the first embodiment includes a plurality of mobile station apparatuses 10,..., An application server 20, an IMS (Internet Protocol Multimedia System) core system 30, and a core. The network system 40 and a plurality of base station devices 51, 52,... The application server 20, the IMS core system 30, and the core network system 40 constitute a service providing system.

  Each mobile station apparatus 10 is a mobile phone. Each mobile station device 10 is also referred to as a user terminal (corresponding to a UE (User Equipment) in 3GPP). Each of the mobile station devices 10 may be a personal computer, a PHS (Personal Handyphone System), a PDA (Personal Data Assistance, a Personal Digital Assistant), a car navigation terminal, a game terminal, or the like.

  Each of the base station devices 51, 52,... Is connected to the mobile station devices 10,. In this example, the base station apparatus 51 is configured as an E-UTRAN (Evolved Mobile Telecommunications System) terrestrial resources in 3.9G (LTE: Long Term Evolution) as a communication method. Further, the base station apparatus 52 constitutes UTRAN (UMTS Terrestrial Radio Access Network) in 3G as a communication method.

  When each mobile station apparatus 10 is connected to the base station apparatus 51, 52,... So as to be capable of wireless communication, communication between the mobile station apparatus 10,... And the base station apparatus 51, 52,. Is transmitted to the base station apparatus 51, 52,... Each time a preset detection cycle elapses.

  When receiving each communication quality value, each base station apparatus 51, 52,... Determines whether or not the received communication quality value is equal to or less than a preset threshold value. When each of the base station devices 51, 52,... Determines that the received communication quality value is equal to or less than the threshold value, the mobile station device 10,. A handover processing request is transmitted to the core network system 40.

  That is, when each base station device 51, 52,... Has a communication quality value representing communication quality with the mobile station devices 10,. The handover processing request is transmitted to the core network system 40.

  The handover process request is information indicating that the mobile station apparatus 10 is requested to execute the handover process. In this example, the handover process request includes base station identification information for identifying a handover destination base station apparatus. The handover process is a process of switching (changing) the base station apparatuses 51, 52,... Connected to the mobile station apparatuses 10,.

  When each base station apparatus 51, 52,... Receives handover process permission information in response to a handover process request, each base station apparatus 51, 52,. The handover process permission information is information indicating that the execution of the handover process is permitted. On the other hand, each base station apparatus 51, 52,... Does not execute the handover process when receiving the handover process prohibition information in response to the handover process request. The handover process prohibition information is information indicating that execution of the handover process is prohibited.

  The core network system 40 is communicably connected to each of the plurality of base station apparatuses 51, 52,... Via the communication line NW.

  The core network system 40 includes 3C Mobile Services Switching Center (MSC), Serving GPRS (General Packet Radio Service) Support Node (SGSN), GGSN (Gateway GPRS SupportH), and GGSN (Gateway GPRS SupportH). .

  Furthermore, the core network system 40 includes MME (Mobility Management Entity), S-GW (Serving Gateway), P-GW (Packet Data Node Gateway), HSS (Home Subscriber Server, and HSS) in LTE as 3.9G. PCRF (Policy and Charging Rules Function) and the like are included.

  The IMS core system 30 is a functional unit that performs session control in IMS. The IMS core system 30 includes a P-CSCF (Proxy Call Session Control Function), an S-CSCF (Serving Call Session Control Function), and the like.

  The application server 20 is also called IMS-AS (corresponding to an application server in IMS). The application server 20 and the core network system 40 are communicably connected via the IMS core system 30.

  With such a configuration, the service providing system provides application services to the mobile station devices 10,... Between the base station devices 51, 52,. Send and receive information to provide.

  Each of the application server 20, the IMS core system 30, and the core network system 40 includes a central processing unit (CPU) and a storage device (memory and hard disk drive (HDD)). ).

  Each of the application server 20, the IMS core system 30, and the core network system 40 will be described later by executing a program stored in a storage device included in the information processing apparatus by a CPU included in the information processing apparatus. It is configured to realize the function.

(function)
FIG. 2 is a block diagram showing functions of the service providing system configured as described above.
The function of the application server 20 includes an available service identification information storage unit (providable service identification information storage unit) 21 and an application service information processing unit (storage processing unit) 22.

The function of the IMS core system 30 includes a session establishment unit (session establishment means) 31.
The functions of the core network system 40 include a bearer establishment unit 41, a service provision continuation determination unit (service provision continuation determination unit) 42, and a handover process execution control unit (handover process execution control unit) 43. The information processing apparatus having the function of the service provision continuation determination unit 42 constitutes a service provision continuation determination apparatus.

  The provideable service identification information storage unit 21 includes base station identification information for identifying a base station apparatus, and provideable service identification information for identifying an application service that can be provided via the base station apparatus. Store in association with each other.

  In this example, as shown in FIG. 3, the available service identification information storage unit 21 includes base station identification information for identifying a base station apparatus, and a communication method between the base station apparatus and the mobile station apparatus. A table in which communication method identification information for identifying is associated is stored.

  Further, as shown in FIG. 4, the available service identification information storage unit 21 uses communication scheme identification information for identifying a communication scheme between the base station apparatus and the mobile station apparatus, and the communication scheme. A table that associates service identification information for identifying application services that can be provided is stored.

  That is, the communication method identification information associated with the base station identification information in the table shown in FIG. 3 and the service identification information associated with the table shown in FIG. It corresponds to the service providing information that can be provided for identifying the application service that can be provided through the identified base station apparatus.

  The serviceable service identification information storage unit 21 may be configured to store information input by the user as the information illustrated in FIGS. 3 and 4, or the information input by the user may be stored in another device. It may be configured to store the received information.

  The serviceable service identification information storage unit 21 replaces the tables shown in FIG. 3 and FIG. 4 with base station identification information for identifying a base station device and the base station, as shown in FIG. It may be configured to store a table in which service-provided service identification information for identifying application services that can be provided via the device is associated with the service.

  The application service information processing unit 22 provides application services (multimedia services) such as PoC (Push To Talk Over Cellular), IM (Instant Messaging or Instant Messager), a conference service, and video distribution. To send and receive information.

  The application / service information processing unit 22 receives a service start request. The service start request is information that includes service identification information for identifying an application service, and indicates that the start of the application service is requested.

  The application / service information processing unit 22 may be configured to receive a service start request from the mobile station apparatus 10 and receive the received service start request. The application / service information processing unit 22 is configured to receive a service start request from another device (for example, a system that uses the application server 20 from outside the IMS) and accept the received service start request. It may be.

  When receiving the service start request, the application / service information processing unit 22 transmits a session establishment request to the IMS core system 30. The session establishment request is information indicating that the establishment of a session as a communication path used for transmitting and receiving information for providing an application service is requested.

  When the session between the application server 20 and the mobile station apparatus 10 is established based on the session establishment request, the application service information processing unit 22 receives the mobile station identification information and the service identification information. Store in association with each other. As a result, the application / service information processing unit 22 stores a table in which mobile station identification information and service identification information are associated with each other as shown in FIG.

  Here, the mobile station identification information is information for identifying the mobile station apparatuses 10,... Related to the session (that is, connected to the application server 20 through the session). The service identification information is information for identifying an application / service related to the session (that is, service identification information included in a service start request that is a basis for transmitting the session establishment request).

  The application / service information processing unit 22 changes every time a preset transmission cycle elapses, or whenever information stored in the provable service identification information storage unit 21 and the application / service information processing unit 22 changes. 3, 4, and 6 are transmitted to the core network system 40 via the IMS core system 30.

  When receiving a session establishment request from the application server 20, the session establishment unit 31 transmits a bearer establishment request to the core network system 40. The bearer establishment request is information indicating that a bearer establishment between the mobile station apparatuses 10... And the IMS core system 30 is requested. The bearer is a virtual communication connection.

  When the bearer is established, the session establishing unit 31 performs a process for establishing a session (session establishment process). The session establishment unit 31 relays a message in accordance with a preset communication protocol (in this example, SIP (Session Initiation Protocol)), so that a session between the application server 20 and the mobile station apparatus 10,. Establish.

  When the bearer establishment unit 41 receives the bearer establishment request from the IMS core system 30, the bearer establishment unit 41 performs processing (bearer establishment) for establishing a bearer between the IMS core system 30 and the mobile station devices 10,. Process).

  The service provision continuation determination unit 42 receives (accepts) a handover processing request from the base station devices 51, 52,. When the service provision continuation determination unit 42 receives the handover process request, the service provision continuation determination unit 42 passes through the base station apparatus (that is, the handover destination base station apparatus) 51, 52,... Identified by the base station identification information included in the handover process request. It is determined whether or not it is possible to continue providing the application service to the mobile station apparatus (that is, the mobile station apparatus that is the target of the handover processing request) 10.

  Specifically, the service provision continuation determining unit 42 performs the above determination based on the tables shown in FIGS. 3, 4, and 6 received from the application server 20.

  That is, the service provision continuation determination unit 42 stores the service identification stored in the table shown in FIG. 6 in association with the mobile station identification information for identifying the mobile station apparatus 10 to be subjected to the handover process. Information is acquired as service-in-service identification information for identifying an application / service currently provided to the mobile station apparatus 10,.

  Further, the service provision continuation determination unit 42 acquires communication scheme identification information stored in association with the base station identification information for identifying the handover destination base station apparatus in the table shown in FIG. Next, the service provision continuation determination unit 42 provides the service identification information stored in association with the acquired communication method identification information in the table shown in FIG. 4 via the handover destination base station apparatus. Obtainable service identification information for identifying possible application services.

  Then, the service provision continuation determination unit 42 determines whether or not the acquired provided service identification information includes the acquired service identification information being provided.

  The service provision continuation determination unit 42 can continue to provide the application service to the mobile station apparatus via the handover destination base station apparatus by determining that the service identification information that can be provided includes the service identification information being provided. Judge that there is. On the other hand, the service provision continuation determination unit 42 determines that the service identification information that can be provided does not include the service identification information that is being provided, thereby providing application services to the mobile station apparatus via the handover destination base station apparatus. It is determined that continuation is impossible.

  When the service provision continuation determining unit 42 determines that the application / service provision to the mobile station apparatus via the handover destination base station apparatus can be continued, the handover process execution control unit 43 displays the handover process permission information. , To the base station devices 51, 52,... That have transmitted the handover processing request.

  On the other hand, the handover process execution control unit 43 prohibits the handover process when the service provision continuation determination unit 42 determines that the application service cannot be continuously provided to the mobile station apparatus via the handover destination base station apparatus. Information is transmitted to the base station apparatuses 51, 52,... That have transmitted the handover processing request.

(Operation)
Next, the operation of the mobile communication system 1 will be described with reference to FIGS. As described above, the application server 20 stores information stored in the provable service identification information storage unit 21 and the application / service information processing unit 22 every time a preset transmission cycle elapses. Each time it changes, the tables shown in FIGS. 3, 4, and 6 are transmitted to the core network system 40 via the IMS core system 30.

  Here, it is assumed that the mobile station apparatus 10 transmits a service start request including service identification information to the application server 20 when the mobile station apparatus 10 and the base station apparatus 51 are connected so as to be capable of wireless communication. Continue to explain.

  The application server 20 receives the service start request by receiving the service start request (step S101 in FIG. 7). Next, the application server 20 transmits a session establishment request to the IMS core system 30 (step S102 in FIG. 7).

  Thereby, the IMS core system 30 receives the session establishment request. Then, the IMS core system 30 transmits a bearer establishment request to the core network system 40 (step S103 in FIG. 7).

  Thereby, the core network system 40 receives the bearer establishment request. Then, the core network system 40 performs bearer establishment processing (step S104 in FIG. 7). Thereby, a bearer is established between the mobile station apparatus 10 and the IMS core system 30 (step S105 in FIG. 7).

  When the bearer is established, the IMS core system 30 executes a session establishment process (step S106 in FIG. 7). Thereby, a session is established between the mobile station apparatus 10 and the application server 20 (step S107 in FIG. 7).

  Next, when the session is established, the application server 20 stores the mobile station identification information for identifying the mobile station apparatus 10 and the service identification information included in the service start request in association with each other in the storage device. (Step S108 in FIG. 7). Thereby, the application server 20 transmits the table shown in FIG. 6 including the newly stored information to the core network system 40 via the IMS core system 30.

  Further, as described above, the mobile station device 10 sets the communication quality value indicating the communication quality between the mobile station device 10 and the base station device 51 every time a preset detection cycle elapses. Send to. And when the base station apparatus 51 receives a communication quality value, it determines whether the said received communication quality value is below a preset threshold value.

  Now, the description will be continued assuming the case where the communication quality between the mobile station apparatus 10 and the base station apparatus 51 deteriorates due to the movement of the mobile station apparatus 10. In this case, when the mobile station apparatus 10 transmits a communication quality value to the base station apparatus 51 (step S201 in FIG. 8), the base station apparatus 51 determines that the received communication quality value is equal to or less than the threshold value.

  Accordingly, the base station apparatus 51 transmits a handover process request for the mobile station apparatus 10 as a target of the handover process to the core network system 40.

  Thereby, the core network system 40 receives the handover processing request. The core network system 40 then transmits the mobile station device (that is, the handover processing request request) via the base station device (here, the handover destination base station device 52) identified by the base station identification information included in the handover processing request. It is determined whether or not it is possible to continue providing the application service to the target mobile station apparatus 10.

  Assume that the service identification information that can be provided includes service identification information that is being provided. In this case, the core network system 40 determines that it is possible to continue providing the application service to the mobile station apparatus 10 via the handover destination base station apparatus 52.

  Therefore, the core network system 40 transmits the handover process permission information to the base station apparatus 51 that has transmitted the handover process request (step S203 in FIG. 8). Thereby, the base station apparatus 51 performs a handover process (step S204 in FIG. 8). As a result, the base station apparatus connected to the mobile station apparatus 10 so as to be able to perform wireless communication is switched from the base station apparatus 51 to the base station apparatus 52.

  On the other hand, assume that the service identification information that can be provided does not include all the service identification information that is being provided. In this case, the core network system 40 determines that it is impossible to continue providing the application service to the mobile station device 10 via the base station device 52 that is the handover destination.

  Therefore, the core network system 40 transmits the handover process prohibition information to the base station apparatus 51 that has transmitted the handover process request (step S204 in FIG. 9). In this case, the base station apparatus 51 does not execute the handover process.

  As described above, according to the service providing system according to the first embodiment of the present invention, the service providing system provides the application service to the mobile station apparatus 10 via the handover destination base station apparatus 52. Only when the continuation is possible, the execution of the handover process is permitted. Thereby, it is possible to reliably prevent the provision of the application service to the mobile station device 10 from being interrupted.

  In the service providing system according to the first embodiment, the core network system 40 determines whether it is possible to continue providing the application service to the mobile station device via the handover destination base station device. However, the application server 20 or the IMS core system 30 may be configured to perform the configuration.

  The service providing system according to the first embodiment is configured such that the application server 20 stores both the table shown in FIG. 3 and the table shown in FIG. The core network system 40 may store the illustrated table, and the application server 20 or the IMS core system 30 may store the table illustrated in FIG.

  Further, in the mobile communication system 1 according to the modification of the first embodiment, each base station device 51, 52,... The handover processing request including the request is transmitted to the core network system 40. The control-unnecessary information is information indicating that control based on whether or not to continue providing the application service is unnecessary.

Further, in this case, when the handover processing request includes control unnecessary information, the core network system 40 determines whether or not it can continue to provide the application service to the mobile station device via the handover destination base station device. Regardless, the handover process permission information is transmitted to the base station apparatus.
According to this, it is possible to prevent the communication quality between the mobile station apparatus 10,... And the base station apparatus 51, 52,.

Second Embodiment
Next, a service providing system according to a second embodiment of the present invention will be described. The service providing system according to the second embodiment provides a mobile station apparatus and a base station that can continuously provide application services being provided to the mobile station apparatus to the service providing system according to the first embodiment. It is different in that it is configured to store information in which the device is associated. Accordingly, the following description will focus on such differences.

  When the session between the application server 20 and the mobile station apparatus 10 is established based on the session establishment request, the application service information processing unit 22 according to the second embodiment has mobile station identification information, The base station identification information is stored in association with each other. Thereby, as shown in FIG. 10, the application / service information processing unit 22 stores a table in which the mobile station identification information and the base station identification information are associated with each other instead of the table shown in FIG.

  Here, the mobile station identification information is information for identifying the mobile station apparatuses 10,... Related to the session (that is, connected to the application server 20 through the session). The base station identification information is stored in the available service identification information storage unit 21 in association with the same available service identification information as the service identification information for identifying the application / service related to the session. Station identification information.

  The application / service information processing unit 22 according to the second embodiment performs the processing shown in FIG. 10 every time a preset transmission cycle elapses or whenever information stored in the application / service information processing unit 22 changes. Are transmitted to the core network system 40 via the IMS core system 30.

  The service provision continuation determination unit 42 according to the second embodiment, based on the table shown in FIG. 10 received from the application server 20, applies application services to the mobile station device via the handover destination base station device. It is determined whether or not the provision can be continued.

  That is, the service provision continuation determination unit 42 stores the base station stored in association with the mobile station identification information for identifying the mobile station apparatus 10 to be subjected to the handover process in the table shown in FIG. When the base station device identified by the identification information includes the handover destination base station device, it is determined that the application service can be continuously provided to the mobile station device via the handover destination base station device. .

  The service providing system according to the second embodiment configured as described above can achieve the same operations and effects as the service providing system according to the first embodiment.

<Third Embodiment>
Next, a service providing system according to a third embodiment of the present invention will be described with reference to FIG.
A service providing system 100 according to the third embodiment includes:
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Configured to send and receive information.

Furthermore, the service providing system 100 includes:
Provideable service identification for storing the base station identification information for identifying the base station apparatus and the provideable service identification information for identifying the application service that can be provided via the base station apparatus in association with each other An information storage unit (providable service identification information storage means) 101;
When the handover process request for requesting execution of the handover process for the mobile station apparatus is received from the base station apparatus, the provision stored in association with the base station identification information for identifying the handover destination base station apparatus By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. A service provision continuation determination unit (service provision continuation determination unit) 102 for determining whether or not the provision of the application / service to the mobile station device can be continued through;
When it is determined that it is possible to continue providing the application service to the mobile station apparatus via the handover destination base station apparatus, the handover process is allowed to be performed. A handover process execution control unit (handover process execution control means) 103 that prohibits execution of the handover process when it is determined that the provision of the application service to the mobile station apparatus through the apparatus cannot be continued;
Is provided.

  According to this, the service providing system 100 permits the execution of the handover process only when it is possible to continue providing the application service to the mobile station apparatus via the handover destination base station apparatus. Accordingly, it is possible to reliably prevent the provision of application services to the mobile station apparatus from being interrupted.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above-described embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  In each of the above embodiments, each function of the mobile communication system 1 is realized by the CPU executing a program (software), but may be realized by hardware such as a circuit.

  In each of the above embodiments, the program is stored in the storage device, but may be stored in a computer-readable recording medium. For example, the recording medium is a portable medium such as a flexible disk, an optical disk, a magneto-optical disk, and a semiconductor memory.

  In addition, as another modified example of the above-described embodiment, any combination of the above-described embodiments and modified examples may be employed.

<Appendix>
A part or all of the above embodiment can be described as the following supplementary notes, but is not limited thereto.

(Appendix 1)
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Configured to send and receive information
Provideable service identification for storing the base station identification information for identifying the base station apparatus and the available service identification information for identifying the application service that can be provided via the base station apparatus in association with each other Information storage means;
The provision stored in association with base station identification information for identifying a handover destination base station device when a handover processing request for requesting execution of a handover process for the mobile station device is received from the base station device By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Service provision continuation determining means for determining whether or not it is possible to continue providing the application service to the mobile station device via
When it is determined that provision of the application service to the mobile station apparatus via the handover destination base station apparatus can be continued, execution of the handover process is permitted, while the handover destination base station A handover process execution control means for prohibiting execution of the handover process when it is determined that it is impossible to continue providing the application service to the mobile station apparatus via the apparatus;
A service providing system comprising:

  According to this, the service providing system permits the execution of the handover process only when it is possible to continue providing the application service to the mobile station device via the handover destination base station device. Accordingly, it is possible to reliably prevent the provision of application services to the mobile station apparatus from being interrupted.

(Appendix 2)
The service providing system according to attachment 1, wherein
The handover process execution control unit permits execution of the handover process when the handover process request includes control-unnecessary information indicating that control based on whether or not to continue providing the application service is necessary. Service providing system configured to.

  According to this, for example, when the communication quality between the mobile station apparatus and the base station apparatus is considerably deteriorated, the base station apparatus transmits a handover processing request including control unnecessary information to the service providing system. It is possible to prevent the communication quality between the station apparatus and the base station apparatus from deteriorating excessively.

(Appendix 3)
A service providing system according to appendix 1 or appendix 2,
The available service identification information storage means includes:
The base station identification information for identifying the base station device and the communication method identification information for identifying the communication method between the base station device and the mobile station device are stored in association with each other,
Corresponding communication scheme identification information for identifying a communication scheme between the base station apparatus and the mobile station apparatus, and service identification information for identifying an application service that can be provided using the communication scheme A service providing system configured to be attached and stored.

(Appendix 4)
The service providing system according to any one of appendix 1 to appendix 3,
Session establishment means for establishing a session for communication with the mobile station device when a service start request for requesting the start of provision of the application service is received;
When the session is established, mobile station identification information for identifying the mobile station apparatus related to the session and service identification information for identifying the application service related to the session are stored in association with each other Storage processing means for
With
The service provision continuation determining means sends the service identification information stored in association with the mobile station identification information for identifying the mobile station apparatus that is the target of the handover process request to the mobile station apparatus at the present time. A service providing system configured to acquire as the service providing information for providing to identify an application service being provided.

(Appendix 5)
The service providing system according to any one of appendix 1 to appendix 3,
Session establishment means for establishing a session for communication with the mobile station device when a service start request for requesting the start of provision of the application service is received;
When the session is established, the service that can be provided is the same as the mobile station identification information for identifying the mobile station apparatus related to the session and the service identification information for identifying the application service related to the session Storage processing means for storing the base station identification information stored in association with the identification information;
With
The service provision continuation determining means includes a base station apparatus identified by base station identification information stored in association with mobile station identification information for identifying the mobile station apparatus that is the target of the handover process request, A service providing system configured to determine that provision of the application service to the mobile station apparatus via the handover destination base station apparatus can be continued when the handover destination base station apparatus is included.

(Appendix 6)
The service providing system according to appendix 4 or appendix 5,
The session establishing means is a service providing system configured to establish the session using SIP (Session Initiation Protocol).

(Appendix 7)
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Applied to service delivery systems configured to send and receive
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via base station identification information for identifying the base station apparatus and the base station apparatus The provision that is stored in association with base station identification information for identifying a handover destination base station device in a storage device that associates and stores available service identification information for identifying an application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via
When it is determined that provision of the application service to the mobile station apparatus via the handover destination base station apparatus can be continued, execution of the handover process is permitted, while the handover destination base station A service providing method for prohibiting execution of the handover process when it is determined that provision of the application service to the mobile station device via the device cannot be continued.

(Appendix 8)
The service providing method according to appendix 7,
A service providing method configured to permit execution of the handover process when the handover process request includes control-unnecessary information indicating that control based on whether or not to continue providing the application service is necessary.

(Appendix 9)
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Configured to send and receive information
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via base station identification information for identifying the base station apparatus and the base station apparatus The provision that is stored in association with base station identification information for identifying a handover destination base station device in a storage device that associates and stores available service identification information for identifying an application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via Configured service providing continuation determining device so.

(Appendix 10)
To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. To an information processing device configured to send and receive
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via base station identification information for identifying the base station apparatus and the base station apparatus The provision that is stored in association with base station identification information for identifying a handover destination base station device in a storage device that associates and stores available service identification information for identifying an application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via Program for realizing the service providing continuation determining means.

  The present invention is applicable to a mobile communication system that provides application services to mobile station apparatuses.

DESCRIPTION OF SYMBOLS 1 Mobile communication system 10, ... Mobile station apparatus 20 Application server 21 Provisionable service identification information storage part 22 Application service information processing part 30 IMS core system 31 Session establishment part 40 Core network system 41 Bearer establishment part 42 Service provision continuation Determining unit 43 Handover processing execution control unit 51, 52, ... Base station apparatus 100 Service providing system 101 Available service identification information storage unit 102 Service providing continuation determining unit 103 Handover processing execution control unit NW Communication line

Claims (10)

To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Configured to send and receive information
Provideable service identification for storing the base station identification information for identifying the base station apparatus and the available service identification information for identifying the application service that can be provided via the base station apparatus in association with each other Information storage means;
The provision stored in association with base station identification information for identifying a handover destination base station device when a handover processing request for requesting execution of a handover process for the mobile station device is received from the base station device By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Service provision continuation determining means for determining whether or not it is possible to continue providing the application service to the mobile station device via
When it is determined that provision of the application service to the mobile station apparatus via the handover destination base station apparatus can be continued, execution of the handover process is permitted, while the handover destination base station A handover process execution control means for prohibiting execution of the handover process when it is determined that it is impossible to continue providing the application service to the mobile station apparatus via the apparatus;
A service providing system comprising: The service providing system according to claim 1,
The handover process execution control unit permits execution of the handover process when the handover process request includes control-unnecessary information indicating that control based on whether or not to continue providing the application service is necessary. Service providing system configured to. The service providing system according to claim 1 or 2,
The available service identification information storage means includes:
The base station identification information for identifying the base station device and the communication method identification information for identifying the communication method between the base station device and the mobile station device are stored in association with each other,
Corresponding communication scheme identification information for identifying a communication scheme between the base station apparatus and the mobile station apparatus, and service identification information for identifying an application service that can be provided using the communication scheme A service providing system configured to be attached and stored. The service providing system according to any one of claims 1 to 3,
Session establishment means for establishing a session for communication with the mobile station device when a service start request for requesting the start of provision of the application service is received;
When the session is established, mobile station identification information for identifying the mobile station apparatus related to the session and service identification information for identifying the application service related to the session are stored in association with each other Storage processing means for
With
The service provision continuation determining means sends the service identification information stored in association with the mobile station identification information for identifying the mobile station apparatus that is the target of the handover process request to the mobile station apparatus at the present time. A service providing system configured to acquire as the service providing information for providing to identify an application service being provided. The service providing system according to any one of claims 1 to 3,
Session establishment means for establishing a session for communication with the mobile station device when a service start request for requesting the start of provision of the application service is received;
When the session is established, the service that can be provided is the same as the mobile station identification information for identifying the mobile station apparatus related to the session and the service identification information for identifying the application service related to the session Storage processing means for storing the base station identification information stored in association with the identification information;
With
The service provision continuation determining means includes a base station apparatus identified by base station identification information stored in association with mobile station identification information for identifying the mobile station apparatus that is the target of the handover process request, A service providing system configured to determine that provision of the application service to the mobile station apparatus via the handover destination base station apparatus can be continued when the handover destination base station apparatus is included. The service providing system according to claim 4 or 5, wherein
The session establishing means is a service providing system configured to establish the session using SIP (Session Initiation Protocol). To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Applied to service delivery systems configured to send and receive
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via base station identification information for identifying the base station apparatus and the base station apparatus The provision that is stored in association with base station identification information for identifying a handover destination base station device in a storage device that associates and stores available service identification information for identifying an application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via
When it is determined that provision of the application service to the mobile station apparatus via the handover destination base station apparatus can be continued, execution of the handover process is permitted, while the handover destination base station A service providing method for prohibiting execution of the handover process when it is determined that provision of the application service to the mobile station device via the device cannot be continued. The service providing method according to claim 7, comprising:
A service providing method configured to permit execution of the handover process when the handover process request includes control-unnecessary information indicating that control based on whether or not to continue providing the application service is necessary. To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. Configured to send and receive information
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via base station identification information for identifying the base station apparatus and the base station apparatus The provision that is stored in association with base station identification information for identifying a handover destination base station device in a storage device that associates and stores available service identification information for identifying an application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via Configured service providing continuation determining device so. To provide an application service to a mobile station apparatus that is connected to a plurality of base station apparatuses in a communicable manner and that is connected to the base station apparatus so as to be capable of wireless communication using the cell system. To an information processing device configured to send and receive
When a handover process request for requesting execution of a handover process for the mobile station apparatus is received from the base station apparatus, it can be provided via base station identification information for identifying the base station apparatus and the base station apparatus The provision that is stored in association with base station identification information for identifying a handover destination base station device in a storage device that associates and stores available service identification information for identifying an application service By determining whether the available service identification information includes the service identification information being provided for identifying the application service currently provided to the mobile station apparatus, the base station apparatus of the handover destination is determined. Whether or not it is possible to continue providing the application and service to the mobile station device via Program for realizing the service providing continuation determining means.

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