KR20110093314A - Dual Mode Terminal and VoIP Call Reception Method for Reducing Power Consumption - Google Patents

Abstract

The present invention relates to a method for receiving a VoIP incoming call in a dual mode terminal having a mobile communication module capable of communicating with a mobile communication network and a WiFi communication module capable of communicating with a wireless Internet communication network.
According to the present invention, a dual mode terminal acquires whether there is a VoIP incoming call through a mobile communication network, when there is a VoIP incoming call, turns on the WiFi communication module, and operates a VoIP incoming call depending on whether a wireless Internet communication is currently available. To do this. Therefore, when there is no VoIP incoming call, the WiFi communication module is turned off, thereby reducing power consumption of the terminal.

Description

A dual mode terminal and a method of receiving a VoIP call for reducing power consumption}

The present invention provides a dual mode terminal and a dual mode terminal including a first communication module capable of communicating with a mobile communication network and a second communication module capable of communicating with a wireless internet communication network (for example, a wireless internet communication module such as WiFi). The present invention relates to a method for receiving a VoIP incoming call while reducing power consumption of the second communication module.

In recent years, the communication environment has been developed to integrate wired and wireless. In particular, by interworking services such as WLAN (Wireless LAN) or Wibro (Wibro) with a mobile communication network (for example, cellular network, CDMA network or WCDMA network), a communication service (FMC, Fixed Mobile Convergence, wired or wireless) through wired or wireless Technology to provide integrated services) is being developed.

Wireless internet communication technology has the advantage that high-speed data communication is possible at a low cost, but the disadvantage is that it is difficult to receive continuous service on the move because the service coverage by one access point is very narrow. Therefore, in order to compensate for this, the service is provided in combination with a mobile communication network having a wide service coverage.

The dual mode terminal is a terminal which can be connected to a wireless internet network as well as a mobile communication network. That is, the dual mode terminal is not only a communication module capable of communicating through a mobile communication network such as a conventional cellular network, but also a communication module (for example, an Internet communication module such as WiFi) for data communication by connecting to the wireless Internet. It is also equipped with a terminal. Not only can the call to the other party through the dual-mode terminal, but also the Internet data communication, and can also talk to the other party through the VoIP protocol on the Internet.

Particularly, since the dual mode terminal can make a call through the cellular network in an area where wireless internet communication is not possible, and can make a call using the VoIP protocol through a wireless internet communication in an area where wireless internet communication is possible, the terminal user cannot call a call. The advantage is saving.

In order to talk to the other party through a WiFi communication module in a conventional dual mode terminal, the power of the WiFi communication module must be turned on. In addition, as described above, since the WiFi service coverage is narrow, the WiFi signal is weak and frequently enters an area where wireless Internet communication is impossible. When the wireless Internet communication is in such an area as described above, the WiFi communication module is set to the sleep mode to reduce the power consumption of the WiFi communication module.

However, in order to receive a VoIP call through the WiFi communication module, it is necessary to periodically determine whether the terminal has entered a WiFi communication region. This is for automatically switching to a state where WiFi communication is possible when entering the area where WiFi communication is possible in an area where WiFi communication is not possible.

However, in this case, there is a problem that power consumption is high because the WiFi communication module is continuously turned on even in the absence of VoIP incoming call.

As described above, in order to receive a VoIP call in the dual mode terminal, it is necessary to periodically determine whether the current terminal has entered a WiFi communication area, but in this case, the WiFi communication module is periodically turned on even when there is no VoIP call. Therefore, there is a problem that power consumption is high.

The present invention has been made to solve such a problem, in the present invention, the dual mode terminal acquires whether there is a VoIP call or not through a mobile communication network, and when there is a VoIP call, turns on the power of the wireless Internet communication module, and Perform VoIP incoming operation according to whether or not wireless internet communication is available. Therefore, when there is no VoIP incoming call, the WiFi communication module is turned off, thereby reducing the power consumption of the wireless Internet communication module.

The present invention provides a mobile communication terminal having a mobile communication module capable of communicating with a mobile communication network having such a function, and a WiFi communication module capable of communicating with a wireless Internet communication network.

In addition, the present invention provides a method for receiving a VoIP incoming call in a mobile communication terminal.

In addition, the present invention provides a communication system for delivering a VoIP call to a mobile communication terminal.

In addition, the present invention provides a method for transmitting a VoIP incoming call to a mobile communication terminal in a mobile communication exchange of a mobile communication network.

The present invention also provides a method for delivering a VoIP call in an IP switch of an Internet communication network.

The present invention also provides an IP switch for delivering a VoIP call to a dual mode terminal.

The present invention also provides a mobile communication switch and an IP switch for carrying a VoIP call.

Mobile communication terminal according to an aspect of the present invention for achieving the above object, a mobile communication module capable of communicating with the mobile communication network; WiFi communication module capable of wireless Internet communication; And a controller for turning on the WiFi communication module when receiving information indicating that there is an incoming call from a base station.

Here, the WiFi communication module determines whether the wireless Internet connection is possible when on. When the terminal is located in an area where the wireless Internet access is possible, the controller controls the WiFi communication module to connect with the wireless Internet communication to receive a VoIP incoming call. When the terminal is located in an area where wireless Internet access is not possible, the controller controls the mobile communication module to receive a VoIP incoming call by accessing a mobile communication network.

In addition, the control unit may control the incoming ring of the terminal does not ring even when receiving information that there is a VoIP incoming call from the base station.

Herein, it is preferable that the information indicating that the VoIP incoming call exists is inserted into a paging signal message for paging the called terminal by the base station.

The present invention also relates to a method for receiving a VoIP incoming call at a terminal. The VoIP incoming call reception method may include receiving information on a VoIP incoming call from a wireless Internet communication network from a mobile communication exchange through a mobile communication module capable of communicating with a mobile communication network; Turning on a WiFi communication module capable of communicating with a wireless Internet communication network upon receiving information on the VoIP incoming call; Determining whether communication with the wireless Internet communication network is possible; And when the communication is possible with the wireless Internet communication network, receiving the VoIP incoming call by connecting to the wireless Internet communication network.

In this case, when the terminal is currently unable to communicate with the wireless Internet communication network, the WiFi communication module may be turned off and connected to the mobile communication network to receive the VoIP incoming call.

In addition, after receiving the VoIP call connection request from the calling terminal, the IP switch for transferring the information of the VoIP call to the mobile communication switch; A mobile communication switch which transmits the information of the VoIP call received from the IP switch to a called terminal; And a terminal for turning on a WiFi communication module capable of wireless Internet communication when receiving VoIP call information from the mobile communication exchange.

The present invention also relates to a method for transmitting a VoIP incoming call from a mobile communication exchange to a terminal, the method comprising: receiving information on a VoIP incoming call from an IP exchange; And transmitting the information on the VoIP incoming call to the called terminal through the base station when the information on the VoIP incoming call is received.

Herein, the information on the VoIP incoming call transmitted by the mobile communication exchange to the called terminal is preferably transmitted by being inserted into a paging signal message that the base station pages the called terminal.

The information on the VoIP incoming call may include calling terminal information of the VoIP incoming call, and called terminal information.

When the mobile communication exchange of the mobile communication network receives a call connection request for a VoIP incoming call from the called terminal, the mobile communication exchange transmits routing information about the called terminal to the IP exchange and is connected to the IP exchange. Form a call channel with the calling terminal.

In addition, the present invention network connection unit connected to the wired and wireless communication network; And a switching controller configured to form a call channel according to a call connection request and to transmit information on the VoIP incoming call to a destination terminal through a base station when receiving information on the VoIP incoming call from an IP exchange. It's about ...

In addition, the present invention relates to a method for delivering an incoming VoIP call in an IP exchange, the IP exchanger receiving a VoIP call from an originating terminal; Transferring information about the VoIP call to a mobile communication switch of a mobile communication network; When the called terminal, which has received the information on the VoIP call from the mobile communication switch, is located in an area where wireless Internet access is possible, acquiring IP information provided to the called terminal through an internet communication network to form a VoIP call channel; And when the called terminal, which has received the information about the VoIP call from the mobile communication exchange, is in an area where wireless Internet access is not possible, obtaining a routing channel for the called terminal from the mobile communication exchange to form a call channel. Include.

In addition, the present invention network connection unit connected to the Internet communication network; And forming a call channel according to a call connection request, and when the VoIP call is requested from the calling terminal, transmits information about the VoIP call to the mobile communication switch, and the called terminal is located in an area that is accessible to the wireless Internet communication network. And an exchange control unit which obtains IP information provided to the terminal through an internet communication network and forms a VoIP call channel with the called terminal.

According to the present invention, the mobile communication terminal turns on the WiFi communication module only when there is an incoming VoIP call, and determines whether there is a current access point for the incoming VoIP. If there is no incoming call, the WiFi communication module is turned off, thereby reducing the power consumption of the WiFi communication module.

1 is a block diagram of a communication system for receiving an VoIP incoming call according to an embodiment of the present invention.
2, 3A and 3B are flowcharts illustrating a VoIP incoming call receiving process according to an embodiment of the present invention.
4 is a block diagram of a terminal according to an embodiment of the present invention.
5 is a block diagram showing the configuration of a mobile communication switch according to an embodiment of the present invention.
6 is a block diagram showing a configuration of an IP switch according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention. However, the present invention is not limited by the following examples.

1 is a block diagram of a communication system for transmitting VoIP incoming calls according to an embodiment of the present invention.

The communication system includes a mobile communication terminal (30), an IP exchanger (26) on a wireless Internet communication network (20); And a mobile communication switch 16 on the mobile communication network 10.

The mobile communication terminal 30 is a mobile communication module (32 of FIG. 4) capable of communicating with the mobile communication network 10 and a WiFi communication module (34 of FIG. 4) capable of communicating with a wireless Internet communication network 20. ), And a control unit (35 in FIG. 4). A detailed configuration of the mobile communication terminal 30 will be described later with reference to FIG. 4.

The wireless Internet communication network 20 includes an IP switch 26, an access point (AP) 22, a VoIP server 28, a gateway 24, and the like. In this embodiment, the WiFi communication module of the terminal 30 is connected to the wireless Internet communication network through the access point. However, the access point is not limited to an access point of a WiFi network, but may be an access point of a wireless Internet service network such as WLAN, Wibro, or WiMax. The terminal may access a wireless Internet communication network through the access point.

The mobile communication terminal may connect to the access point through a WiFi communication module to wirelessly connect to the Internet communication network and request a VoIP call connection. In response to the VoIP call connection request, the IP exchange transfers the call connection request message to the PSTN (not shown) or the mobile communication exchange 16 to proceed with the process for call connection. The IP exchanger 26 interworks with the VoIP server 28 in which service subscriber information and the like are stored, and is connected to the access point 22 through the gateway 24 or the like.

In the mobile communication network 10, a mobile communication exchange (MSC) 16 provides routing information for an incoming mobile communication terminal and the like to proceed with a process for call connection, and includes a base station controller (BSC) 14 and a base station (BTS). (12) is connected to the mobile communication terminal.

The illustrated mobile communication network 10 is only one example, and the present invention is not limited to the illustrated mobile communication network 10. Therefore, the present invention can be applied to various mobile communication networks such as, for example, a cellular network, a WCDMA network, or a WCDMA network.

When the IP exchanger 26 receives the VoIP call connection request from the calling terminal, the IP exchanger 26 transmits the information of the VoIP call to the mobile communication exchanger 16, and the mobile communication exchanger 16 receives the IP call from the IP exchanger 26. After inquiring about the terminal to be called from the VoIP call information, the information of the VoIP call is transmitted to the corresponding mobile terminal 30.

The control unit of the terminating mobile communication terminal 30 turns on the WiFi communication module when receiving the VoIP call information from the mobile communication exchange 16. Therefore, when the mobile communication terminal 30 does not receive a VoIP call connection request, the mobile communication terminal 30 does not need to turn on the WiFi communication module, and does not need to check whether or not wireless Internet communication is possible every predetermined period. As such, the mobile communication terminal according to the present invention does not unnecessarily turn on the WiFi communication module, thereby reducing power consumption of the terminal.

The mobile communication terminal 30 may first turn on the WiFi communication module and access the wireless Internet communication network for the VoIP call connection request.

Hereinafter, with reference to Figures 2, 3A and 3B, the VoIP incoming call receiving process according to an embodiment of the present invention will be described.

First, when the wired or wireless originating terminal 60 requests a VoIP call connection (S10), the VoIP call connection request message is transmitted to the IP exchanger 26 via wired or wireless (S12), and the IP exchanger 26 Is requested to connect to the VoIP call of the calling terminal 60 (S20).

Thereafter, the IP exchanger 26 transmits the information on the VoIP call to the mobile communication exchanger 16 of the mobile communication network (S22). Here, the information on the VoIP call may include, for example, calling terminal information of the VoIP incoming call, and called terminal information.

When the mobile communication switch 16 receives the information on the VoIP incoming call from the IP exchange 26, the mobile communication switch 16 transmits the information on the VoIP incoming call to the mobile communication terminal 30 through the base station (S30). Here, it is preferable that the base station inserts and transmits the information on the VoIP incoming call transmitted by the mobile communication switch 16 to the mobile communication terminal 30 in a paging signal message for paging the destination terminal 30. Do.

The called terminal 30 includes a mobile communication module capable of communicating with a mobile communication network and a WiFi communication module capable of communicating with a wireless internet communication network. When the called terminal 30 receives the information on the incoming call from the mobile communication switch 16, by turning on the WiFi communication module that can communicate with the wireless Internet communication network (S40), whether the communication with the wireless Internet communication network is possible It is determined whether or not (S50). For example, it is determined whether there is an access point (AP) around and whether communication with the access point is possible.

If communication with the wireless Internet communication network is possible (Y), the called terminal 30 is connected to the wireless Internet communication network through the access point as shown in Figure 3a (S70). Thereafter, the IP exchanger acquires the IP information provided to the terminal and forms a VoIP call channel (S70), so that the terminal 30 receives the VoIP incoming call. After the call is terminated, the VoIP call is terminated (S80).

After the call is terminated, the terminal 30 turns off the WiFi communication module again (S90).

If the terminal 30 is currently unable to communicate with the wireless Internet communication network (N), as shown in FIG. 3B, the WiFi communication module that can connect with the wireless Internet communication network is turned off (S100), and the mobile communication network is connected. The VoIP call of the calling terminal is received through a mobile communication network (ie, a circuit network). Specifically, first, the wireless communication is currently impossible to connect to the mobile communication network and transmits a message to connect with the mobile communication network (S102). Then, the mobile switch 16 transmits routing information about the called terminal to the IP switch 26. In operation S120, a call channel is established with a calling terminal connected to the IP exchanger 26 to connect the call to the called terminal 30. Thereafter, the call ends when the call ends (S130).

4 schematically shows the configuration of a terminal according to an embodiment of the present invention.

The terminal includes a mobile communication module 32 capable of communicating with a mobile communication network (10 of FIG. 1), a WiFi communication module 34 capable of communicating with a wireless Internet communication network (20 of FIG. 1); And a controller 35 for controlling the operation of the terminal. The terminal further includes a keypad 36 as a user's input tool, and a display unit 37 for displaying a result.

The mobile communication module 32 may be connected to the mobile communication network through the receiver 31 which transmits and receives to and from the base station 12 of the mobile communication network, and the WiFi communication module 34 is connected to the access point 22 of the wireless Internet communication network. It can be connected to the wireless Internet communication network through the connection unit 33.

The controller 35 turns on the WiFi communication module when receiving information indicating that there is an incoming call from the base station 12, and the WiFi communication module determines whether the wireless Internet connection is possible.

At this time, the control unit 35, even when receiving the information that there is a VoIP incoming call from the base station, it is preferable to control so that the incoming ring of the terminal does not ring. In this case, it is preferable that the information indicating that the VoIP incoming call exists is inserted into a paging signal message for paging the called terminal by the base station.

If the terminal is located in an area where the wireless Internet access is possible, the control unit 35 controls the WiFi communication module 34 to connect with the wireless Internet communication to receive an VoIP incoming call.

On the contrary, when the wireless Internet connection is in an area where it is impossible to access, the control unit 35 controls the mobile communication module 32 to connect to the mobile communication network to receive a VoIP incoming call.

Therefore, when the mobile communication terminal does not receive a VoIP call connection request, the mobile communication terminal does not turn on the WiFi communication module, and there is no need to check whether wireless Internet communication is possible at predetermined intervals. As such, the mobile communication terminal according to the present invention does not unnecessarily turn on the WiFi communication module, thereby reducing power consumption of the terminal.

4 schematically illustrates a configuration of a mobile communication exchange according to an embodiment of the present invention. The mobile communication switch (16) includes a network connection unit (16-1) connected to a wired or wireless communication network; And an exchange control unit 16-2 for forming a call channel in response to a call connection request.

When the exchange control unit 16-2 receives the information on the VoIP incoming call from the IP switch (26 in Fig. 1), the exchange control unit 16-2 transfers the information on the VoIP incoming call to the destination terminal through the base station (12 in Fig. 1). To control.

If the called terminal makes a call connection request for the VoIP incoming signal to the mobile communication exchange in response to the VoIP incoming call, the mobile communication exchange transmits routing information about the called terminal to the exchange of the IP communication network. And to establish a communication channel with the calling terminal connected to the IP exchange.

5 schematically illustrates a configuration of an IP switch according to an embodiment of the present invention. The IP exchanger 26 includes a network connection unit 26-1 connected to an internet communication network; And an exchange control unit 26-2 for forming a call channel in response to a call connection request.

When the exchange control unit 26-2 receives the VoIP call from the calling terminal, the exchange control unit 26-2 transmits the information on the VoIP call to the mobile communication switch (16 in FIG. 1), and the terminating terminal can access the wireless Internet communication network. If in, the IP information given to the terminal is obtained through an internet communication network, and controls to establish a VoIP call channel with the called terminal.

If the terminating terminal is located in an area where it is impossible to access the wireless Internet communication network, the exchange control unit 26-2 obtains routing information for the terminating terminal from the mobile communication switch (16 in FIG. 1) and the terminating terminal. Form a call channel with.

When the mobile communication terminal receives the VoIP call according to the present invention, the terminal turns on the WiFi communication module only when receiving the VoIP call connection request. Therefore, it is not necessary to check whether Internet communication is possible at every predetermined period. As such, the terminal according to the present invention does not unnecessarily turn on the WiFi communication module, thereby reducing power consumption of the terminal.

The embodiment according to the present invention is not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

10: mobile communication network 12: base station
14: base station controller 16: mobile communication switch
20: Wireless Internet Communication Network 22: Access Point (AP)
24: Gateway 26: IP Switch
28: VoIP Server 30: Incoming Terminal
31: receiver 32: mobile communication module
33: connection part 34: WiFi communication module
35 control unit 36 keypad
37: display unit 60: calling terminal

Claims (16)

An IP exchanger for receiving a VoIP call connection request from a calling terminal and transferring the information of the VoIP call to a mobile communication switch;
A mobile communication switch which transmits the information of the VoIP call received from the IP switch to a destination terminal of the VoIP call; And
And a terminal for turning on a communication module capable of wireless internet communication when receiving the VoIP call information from the mobile communication switch.
A first communication module capable of communicating with a mobile communication network;
A second communication module capable of communicating with a wireless Internet communication network; And
And a control unit which turns on the second communication module when receiving information indicating that there is an incoming call from a base station.
The method of claim 2,
The second communication module determines whether it is possible to connect to the wireless Internet communication network when it is on,
If the area is accessible to the wireless Internet communication network, the controller controls the second communication module to receive a VoIP incoming call by connecting to the wireless Internet communication network,
When the mobile communication terminal is located in an area where it is impossible to access the wireless Internet communication network, the controller controls the first communication module to receive a VoIP incoming call by connecting to the mobile communication network.
The mobile communication terminal of claim 2, wherein the controller controls the incoming call ring of the terminal not to ring even when receiving information indicating that there is an incoming call from the base station.
The mobile communication terminal of claim 2, wherein the information indicating that the VoIP incoming call exists is inserted into a paging signal message for the base station to page the called terminal.
Receiving information on a VoIP incoming call from the wireless Internet communication network from the mobile communication switch through a first communication module capable of communicating with the mobile communication network;
Turning on a second communication module capable of communicating with a wireless Internet communication network upon receiving information on the VoIP incoming call;
Determining whether communication with the wireless Internet communication network is possible; And
When the current communication with the wireless Internet communication network is possible, connecting to the wireless Internet communication network, and receiving the incoming VoIP call
VoIP incoming call reception method in a terminal comprising a.
The method according to claim 6,
Turning off the second communication module if communication with the wireless Internet communication network is currently impossible; And
And receiving the VoIP incoming call by connecting to the mobile communication network.
Receiving information on the VoIP incoming call from the IP exchange; And
Transmitting the information on the VoIP incoming call to the called terminal through the base station when the information on the VoIP incoming call is received;
VoIP incoming signal transmission method in a mobile communication switch comprising a.
10. The method of claim 8, wherein the information about the VoIP incoming call that the mobile communication exchange delivers to the called terminal is inserted into a paging signal message that the base station pages the called terminal. VoIP call forwarding method.
10. The method of claim 9, wherein the information on the VoIP incoming call includes information on the originating terminal of the VoIP incoming call, and the information on the called terminal.
10. The method of claim 8, wherein when receiving a call connection request for a VoIP incoming call from the called terminal, the mobile communication exchange transmits routing information about the called terminal to the IP exchange, thereby making an outgoing call connected to the IP exchange. The method of claim 1, further comprising the step of establishing a call channel with the terminal.
A network connection unit connected to a wired or wireless communication network; And
And a switching control unit for establishing a call channel according to a call connection request and transferring information on the VoIP incoming call to a destination terminal through a base station when receiving information on the VoIP incoming call from an IP exchange.
Receiving, by the IP exchange, a VoIP call from the calling terminal;
Transferring information about the VoIP call to a mobile communication switch;
When the called terminal, which has received the information on the VoIP call from the mobile communication switch, is located in an area where a connection with the wireless Internet communication network is possible, acquiring IP information provided to the called terminal to form a VoIP call channel; And
When the called terminal, which has received the information about the VoIP call from the mobile communication exchange, is located in an area where it is not accessible to the wireless Internet communication network, obtaining a routing channel for the called terminal from the mobile communication exchange to form a call channel;
VoIP incoming call transmission method in an IP exchange comprising a.
The method as claimed in claim 13, wherein the information on the VoIP call includes the calling terminal information of the VoIP call and the called terminal information.
A network connection unit connected to an internet communication network; And
When a call channel is formed according to a call connection request, when the VoIP call is requested from the calling terminal, the information on the VoIP call is transmitted to the mobile communication switch, and when the called terminal is located in an area that can be connected to the wireless Internet communication network, And an exchange control unit for acquiring IP information provided to the terminal and forming a VoIP call channel with the called terminal.
16. The apparatus of claim 15, wherein the exchange control unit acquires routing information for the called terminal from the mobile communication exchange when the called terminal is located in an area where it is not accessible to the wireless Internet communication network, thereby establishing a call channel with the called terminal. IP exchanger, characterized in that forming.

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