KR100905535B1 - Method for providing mobile communication service of combined circuit service and packet service and mobile terminal unit thereof - Google Patents

Abstract

The present invention relates to a method for providing a circuit / packet combined mobile communication service and a terminal device for implementing the same.

According to the present invention, a circuit / packet combined terminal receives a circuit-oriented service by first performing a location updating (Location Updating) location registration through a circuit switching system. Subsequently, when a user's request for a packet service connection occurs, a circuit / packet combined location registration is attempted with a packet switching system, and a packet data protocol (PDP) session is established with the packet switching system to receive packet service. When the provision of the packet service is completed, the location registration of the packet type is released from the location registration attempted by the packet switching system.

In this way, the misuse of packet resource occupancy of the circuit / packet combined terminal can be prevented, and radio resource utilization by unnecessary resource allocation can be improved.

 Circuit / Packet Combination, Location Registration, Packet Data Protocol Context (PDP Comtext)

Description

A method for providing a circuit / packet mobile communication service and a terminal device for implementing the same {Method for providing mobile communication service of combined circuit service and packet service and mobile terminal unit}

1 is a schematic diagram of a network providing a circuit / packet combined mobile communication service according to an embodiment of the present invention.

2 is a schematic flowchart illustrating a method of providing a circuit / packet combined mobile communication service according to an embodiment of the present invention.

3 is a detailed flowchart illustrating a method of providing a circuit / packet dual communication service according to an embodiment of the present invention.

4 is a diagram illustrating a configuration of a location registration connection request message according to an embodiment of the present invention.

5 is a diagram illustrating a configuration of a location registration release message according to an embodiment of the present invention.

6 is a block diagram showing the configuration of a terminal apparatus according to an embodiment of the present invention.

The present invention relates to a method for providing a circuit / packet combined mobile communication service and a terminal device for implementing the same. More specifically, the present invention relates to a method for providing a mobile communication service connected to a circuit switched network and a packet switched network, and a terminal apparatus for implementing the same.

In general, circuit switched (CS) is used for typical voice services. This creates a circuit-based fixed call path between one user and another.

On the other hand, packet switched (PS) method supports an IP-based data service by using a packet-based unfixed call path.

In the case of a terminal in which a circuit switching scheme and a packet switching scheme are combined, a circuit call is generally used for voice transmission, that is, a voice communication service, and at the same time, a data communication service such as packet service, video sharing, file transmission, and the like may be used.

Network operators are designing and operating networks to support packet services for data communication in addition to existing circuit services for voice communication. In this case, in order to simultaneously support the circuit service and the packet service, the location registration for the packet switched network as well as the location registration for the circuit switched network are required.

Conventionally, a circuit / packet location registration is performed when a terminal is powered on, and a packet service is provided through packet data transmission / reception corresponding to a packet service request.

Accordingly, there is a problem in that unnecessary packet signaling for location registration for the packet service is made even without using the packet service, resulting in waste of network resources.

Therefore, the present invention has been made in an effort to provide a circuit / packet combined mobile communication service for preventing unnecessary packet signaling and a terminal device implementing the same.

A mobile communication service providing method according to a feature of the present invention to achieve the above-described problem,
A mobile communication service providing method of a terminal device connected to a first network using a circuit switched method and a second network using a packet switched method, the location of a circuit type to the first network when the terminal device is powered on. Performing registration; Detecting whether a packet service request is generated from a user in the state where the circuit type location registration is performed, and performing a circuit and packet combined type location registration to the second network when the packet service request occurs; Establishing a session with the second network and receiving a packet service and releasing the session established with the second network when the packet service is completed; And releasing the location registration of the packet type to the second network when the session is released.

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Terminal device according to a feature of the invention,
A terminal device connected to a first network using a circuit switched method and a second network using a packet switched method to provide a mobile communication service, wherein the circuit type registration is performed with the first network when the power is turned on. Detect whether a packet service request is generated from a user, and when the packet service request occurs, performs location registration of a circuit and packet combined type to the second network, and releases the location registration of the packet type when packet service provision is completed. Processing unit; And a session processing unit configured to set up the session with the second network to receive the packet service when the location registration processing unit performs location registration of the circuit and packet combined type, and release the session when the packet service is completed. It includes.

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DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, "... part" described in the specification, "..." Module ”means a unit for processing at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software.

Now, a method for providing a circuit / packet combined mobile communication service according to an embodiment of the present invention and a terminal device implementing the same will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a network providing a circuit / packet mobile communication service according to an embodiment of the present invention.

According to FIG. 1, the network providing a circuit / packet combined mobile communication service includes a terminal device 100, a wireless access network 200, a first network 300, a second network 400, and a service network 500. It includes.

The terminal device 100 may be connected to the first network 300 and the second network 400 through the wireless access network 200 as a terminal of a dual circuit / packet subscriber to provide a circuit service or a packet service. Here, the circuit service means a voice communication service such as a voice call and the packet service means an IP based data communication service.

The radio access network 200 performs a radio access termination function according to a radio access standard with the terminal apparatus 100 as a Radio Access Network (RAN), transmits / receives voice, video and data traffic, and transmits a terminal apparatus ( Transmit / receive information with 100. The wireless access network 200 is a base station system (Radio Transceiver) that accommodates the wireless access standard of the 3rd Generation Partnership Project (3GPP) standard to support the existing W-CDMA Subsystem 201 and a Radio Network Controller 203 may be included.

The first network 300 supports a circuit service for voice communication using a circuit switched method. The first network 300 includes a circuit exchange system 301 and a circuit gateway system 303.

The circuit switching system 301 is a mobile switched center (MSC), and is responsible for mobility management, location registration / management, authentication, handover, and roaming according to circuit services.

The circuit gateway system 303 performs media conversion for signaling and bearers so that the first network 300 can accommodate data transmitted / received with the service network 500 which is an external network as a media gateway (MGW).

The second network 400 provides a packet service for data communication using a packet switched scheme. The second network 400 includes a packet exchange system 401 and a packet gateway system 403.

The packet switching system 401 is a Serving GPRS Support Node (SGSN) that manages mobility for packet service (General Packet Radio Service), incoming / outgoing call processing procedures, and session management for transmitting / receiving packet data. It handles authentication and billing functions, and routing processing of packet data.

The packet gateway system 403 is a gateway GPRS support node (GGSN), which allocates an IP address for GPRS packet service, manages a session, manages routing of packet data, and connects to a service network 500 that is an external network. Provides an interface for

The service network 500 is a network providing circuit switched or IP-based packet service. Examples of the service network 500 include a public switched telephone network (PSTN), an IP multimedia subsystem (IMS) network, and an internet network. It may include.

Next, a method of providing a mobile communication service by a circuit / packet subscriber station and a configuration of the terminal device will be described based on the network configuration.

2 is a schematic flowchart illustrating a method of providing a circuit / packet combined mobile communication service according to an embodiment of the present invention.

Referring to FIG. 2, when the terminal apparatus 100 (FIG. 1) turns on the power, the circuit switching system (301 of FIG. 1) establishes a radio resource control connection (RRC) (S101). Perform location registration of (S103).

Then, the terminal device 100 is provided with a circuit service-oriented service provided by the service network 500 of FIG. 1 through the circuit exchange system 301 in the circuit service providing mode (S105 and S107).

Thereafter, when a packet service request (S109) is generated from the user, the terminal device 100 establishes a radio resource control connection with the packet switching system (401 in FIG. 1) (S111).

The terminal device 100 requests the packet switching system 401 to register the location of the circuit / packet combination type through the radio resource control connection established in step S111 (S113).

The packet switching system 401 performs the location registration requested in step S113 and informs the circuit switching system 301 of performing the location registration of the packet type (S115). Then, the terminal device 100 responds to the location registration request of the circuit / packet combined type (S117).

Then, the terminal device 100 establishes a packet data protocol context session with the packet switching system 401 (S119) and receives a packet-based service provided by the service network 500 (S121 and S123).

After that, when the packet service ends (S125), the terminal device 100 releases the session set in step S119 (S127). Then, the location registration of the packet type is canceled with the packet switching system 401 (S129). That is, the location registration of the packet type is released from the location registration attempted by the packet switching system 401.

Then, the terminal device 100 switches to the circuit service providing mode (S131) to receive the circuit-based service through the circuit exchange system 301.

3 is a detailed flowchart illustrating a method for providing a circuit / packet combined mobile communication service according to an embodiment of the present invention, in which a terminal device (100 in FIG. 1) is a circuit switching system (300 in FIG. (400 in Fig. 1) and a flow chart showing in detail the process of transmitting and receiving data.

Referring to FIG. 3, when the terminal device 100 turns on the power, the circuit switching system 300 requests a connection to the radio resource control (hereinafter referred to as “RRC”) (SRC Connection Request).

The terminal device 100 completes the RRC connection setup (RRC Setup Complete) according to the RRC setup request (S203) from the circuit switching system 300 (S205).

When a wireless connection with the circuit switching system 300 is established through steps S201, S203, and S205, the terminal device 100 sends a circuit update request to the circuit switching system 300 (Location Update Request (type = IMSI). attach)) and transmits a message (S207).

The terminal device 100 performs an authentication and encryption procedure (Authentication Request / Resonse) S209 and S211 for location registration with the circuit switching system 300.

The terminal device 100 receives a location update response (Location Update Accept) message from the circuit exchange system 300 (S213) and completes a location update (Temporary Mobile Station Identity (TMSI) Reallocation Complete) (S215).

The terminal device 100 performs an RRC release procedure (RRC Connection Release / RRC Connection Release Complete) with the circuit switching system 300 (S217, S219) to complete the circuit type registration procedure.

Thereafter, when a request for a packet service occurs (S221), the terminal device 100 performs an RRC connection procedure (RRC Connection Request, RRC Setup Resquest, RRC Setup Complete) with the packet switching system 401 (S223, S225, and S227). ).

The terminal device 100 transmits an attach request (type of attach = combined IMSI / GPRS attach, FOR) of a circuit / packet combined type to the packet switching system 401 (S229). 'FOR' means a follow-on request pending, which will be described with reference to FIG. 4.

The terminal device 100 performs an authentication and encryption procedure (Authentication & Cliphering Request / Resonse) (S231, S233) for location registration with the packet switching system 401, and uses a circuit / packet location registration procedure (Attach Response) / Attach Complete) (S235, S237).

Then, the terminal device 100 establishes a packet data protocol session for transmitting / receiving packet data to the packet switching system 401 through a wireless connection already established through steps S223, S225, and S227. Set it.

That is, when the terminal device 100 receives the connection response message (Attach Response) in step S237 to the packet switching system 401, a message for requesting the packet data protocol context activation to the packet switching system 401 (Activate PDP Context Request). It transmits (S239).

The terminal device 100 receives a response message (Activate PDP Context Response) for a packet data protocol context activation request from the packet switching system 401 (S241).

In this way, a session is established between the terminal device 100 and the packet-switching system 401. This series of processes is referred to as "PDP Context Activation".

The packet service is then provided through a session established using "PDP Context Activation".

When the packet service provision is completed (S243), the terminal device 100 transmits a Deactivate PDP Context Request message to the packet switching system 401 (S243). In operation S245, the packet exchange system 401 receives a Deactivate PDP Context Response message.

When the session release is completed, the terminal device 100 transmits a Detach Request (type of detach = GPRS detach) message of the GPRS connection type to the packet switching system 401 (S247). . When a Detach Accept message is received from the packet exchange system 401 (S249), a Detach Complete message is transmitted (S251) to complete the deregistration of the packet type.

The terminal device 100 performs an RRC release procedure (RRC Connection Release / RRC Connection Release Complete) with the packet switching system 401 (S253, S255) to complete a packet type location registration release procedure.

4 is a diagram illustrating a configuration of a location registration connection request message according to an embodiment of the present invention.

According to FIG. 4, an 'Attach TYPE' parameter P100 indicating a type of attach is shown in the Attach Request described in FIGS. 2 and 3.

At this time, the first three bits of the “Attach TYPE” parameter, “Type of attach” (P101), is set to “011” and is set to circuit / packet combination, that is, “Combined GPRS / IMSI attach”.

Also, set “Follow On Request (FOR)” (P103) in the “Attach TYPE” parameter to a valid bit.

The "FOR" bit (P103) is the fourth bit of the "Attach TYPE" parameter, and sets the fourth bit to "1" to set the follow-on request pending on the "Attach TYPE" parameter.

5 is a diagram illustrating a configuration of a location registration release message according to an embodiment of the present invention.

According to FIG. 5, the Detach Type parameter P200 indicating the type of Detach is shown in the Detach Request described in FIGS. 2 and 3.

At this time, the first three bits of the 'Detach TYPE' parameter, “Type of Detach” (P201) is set to “010” and is set to a packet type, that is, “IMSI Detach”.

In addition, "Power Off" (P203) of the "Detach TYPE" parameter indicates the type of location registration disconnection.

The “Power Off” (P203) bit is the fourth bit of the “Detach TYPE” parameter. When the fourth bit is set to '1', it is released according to the power off.

Next, Figure 6 is a block diagram showing the configuration of a terminal device according to an embodiment of the present invention.

According to FIG. 6, the terminal device 100 includes a location registration processor 120 and a session processor 140.

The location registration processing unit 120 performs a location registration request when the power is detected to increase in supply or a change in the location where it is located. Terminal authentication is performed using the terminal ID.

The location registration processing unit 120 includes a first location registration processing unit 122 and a second location registration processing unit 124 according to the type of location registration.

The first location registration processor 122 performs circuit location registration. That is, when the power is turned on, a location update request message of an IMSI connection type is transmitted. Then, the location update response message is received to complete the circuit type registration.

When a packet service request occurs, the second location registration processor 124 performs location registration of a circuit / packet combined type and performs location registration release of the packet type when the packet service is completed. That is, when a packet service request occurs, the location of the circuit / packet combined type is transmitted by transmitting a location registration connection request message of a combined temporary (IMSI) / GPRS connection type and receiving a location registration connection response message. Perform registration.

The second location registration processing unit 124 includes a detection module 124a, a location registration connection module 124b and a location registration release module 124c in detail according to its function.

The detection module 124a generates a detection signal when detecting and detecting a packet service request operation from a user.

The location registration connection module 124b generates a location registration connection request message of a combined Temporary (IMSI) / GPRS (GPRS) connection type when a detection signal is transmitted from the detection module 124a. 401 of FIG. 1. And receives the location registration connection response message. In this case, the location registration connection response message is transmitted after the location registration of the packet switching system 401 is performed, and an operation of informing the circuit switching system 301 of FIG. 1 is performed.

The location registration connection request message requests the maintenance of the wireless connection by setting the "Follow On Request" bit of the connection type parameter to "effective type".

The location registration release module 124c transmits / receives a location registration release request message and a location registration release response message of a GPRS connection type and a location registration release response message when the session processor releases the session to the packet type. Unregistered location

When the location registration processing unit 120 performs location registration of a circuit / packet combined type, the session processing unit 140 sets a session for receiving a packet service in which a request is generated, and releases the set session when the packet service is completed.

The session processing unit 140 includes a wireless connection control module 142 and a service connection control module 144 in detail according to its function.

The radio connection control module 142 performs a radio resource control connection (RRC connection) with the first network (300 of FIG. 1) and the second network (300 of FIG. 1).

The service access control module 144 establishes a "PDP Context" session for providing packet service through the radio resource control connection established by the radio connection control module 142 and used in the location registration connection request by the request for maintaining the radio connection. Set it. When the packet service is completed, the set "PDP Context" session is canceled.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

As described above, according to the embodiment of the present invention, the misuse of packet resource occupancy of the circuit / packet combined terminal can be prevented, and radio resource utilization by unnecessary resource allocation can be improved. In addition, the packet resource allocation by the user's packet service use is expected to contribute to the efficient operation of the packet switching system and to provide a variety of terminal use.

Claims (10)

A mobile communication service providing method of a terminal device connected to a first network using a circuit switched method and a second network using a packet switched method, Performing circuit location registration of the circuit type to the first network when the terminal device is powered on; Detecting whether a packet service request is generated from a user in the state where the circuit type location registration is performed, and performing a circuit and packet combined type location registration to the second network when the packet service request occurs; Establishing a session with the second network and receiving a packet service and releasing a session established with the second network when the packet service is completed; And Releasing the location registration of the packet type to the second network if the session is released. Mobile communication service providing method comprising a. The method of claim 1, Performing the location registration of the circuit type, Transmitting a location update request message of an IMSI connection type to the first network when the terminal device is powered on; And Receiving a location update response message from the first network to complete location registration of the circuit type, Performing the location registration of the circuit and packet combined type, When the packet service request occurs, transmitting a Location Registration Connection Request message of a Combined Temporary (IMSI) / GPRS (GPRS) connection type to the second network; And Location registration connection response message of the Combined Temporary (IMSI) / GPRS connection type from the second network, wherein the response message is a location registration is performed in the second network, Receiving transmitted after the operation of informing the second network that the location registration is performed to the second network to complete the location registration of the circuit / packet combined type Mobile communication service providing method comprising a. The method of claim 2, The step of transmitting the location registration connection request message of the combined (IMSI) / GPRS (GPRS) connection type, A method of providing a mobile communication service for requesting to maintain a wireless connection established with the second network by setting a specific bit of a connection type parameter to an "effective type". The method of claim 3, Setting a session with the second network to receive a packet service and releasing the session established with the second network when the packet service is completed, Establishing a packet data protocol context session for providing a packet service through a radio resource control connection established with the second network; Receiving the packet service through the established packet data protocol context session; And Canceling the set packet data protocol context session when the packet service is provided; Mobile communication service providing method comprising a. The method according to any one of claims 1 to 4, The step of releasing the location registration of the packet type, After releasing the session established for providing the packet service, transmitting a location registration release request message of a GPRS release type to the second network; And Receiving the GPRS release type release registration response message from the second network to complete the release of the packet type release; Mobile communication service providing method comprising a. A terminal apparatus connected to a first network using a circuit switched scheme and a second network using a packet switched scheme to provide a mobile communication service, When the power is turned on, a circuit type location registration is performed with the first network and a packet service request is detected from a user. When a packet service request is detected, a circuit and packet combined type location with the second network is detected. A location registration processing unit which performs registration and releases location registration of a packet type when packet service provision is completed; And A session processing unit for setting the session with the second network to receive the packet service when the location registration processing unit performs location registration of both the circuit and the packet type and release the session when the packet service is completed. Terminal device comprising a. The method of claim 6, The location registration processing unit, A first location registration processor configured to perform location registration of the circuit type by transmitting / receiving a location update request message and a location update response message of an IMSI connection type with the first network when the power is turned on; And When the packet service request is generated, a location registration connection request message and a location registration connection response message of a combined Temporary (IMSI) / GPRS (GPRS) connection type are transmitted / received with the second network. A second location registration processing unit that performs location registration of a combined packet type; Terminal device comprising a. The method of claim 7, wherein The second location registration processing unit, Maintaining a wireless connection established with the second network by setting a specific bit of a connection type parameter to an "valid type" in the location registration connection request message of the combined IMSI / GPRS connection type. Terminal device for requesting. The method of claim 8, The second location registration processing unit, A detection module configured to generate a detection signal when detecting and detecting a packet service request operation from a user; When a detection signal is transmitted from the detection module, a location registration connection request message of the combined Temporary (IMSI) / GPRS connection type is transmitted to the second network, and a location registration connection response message corresponding thereto is transmitted. Wherein the connection response message is transmitted after the location registration is performed in the second network and the operation of informing the first network that the location registration is performed is performed; And When the session processing unit releases the session, the location registration release for releasing a packet type location registration by transmitting / receiving a location registration release request message and a location registration release response message of a GPRS connection type with the second network. module Terminal device comprising a. The method of claim 9, The session processing unit, A radio connection control module configured to perform radio resource control connection with the first network and the second network; And The wireless connection control module establishes a packet data protocol context session for providing a packet service through a radio resource control connection established for location registration of a circuit / packet combined type with the second network, and sets when the packet service is completed. A service access control module for releasing the packet data protocol context session setting Terminal device comprising a.

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