JP5305471B2 - Wireless LAN router apparatus, wireless LAN function control method used therefor, and program thereof - Google Patents

Description

  The present invention relates to a wireless LAN router device, a wireless LAN function control method used therefor, and a program therefor, and more particularly, to a wireless LAN (Local Area Network) router device for home use equipped with a VoIP (Voice over Internet Protocol) function with a wireless noise prevention function. .

  In the above wireless LAN router device, management that associates the VoIP function with the wireless LAN function for the purpose of preventing wireless noise that affects a call is not performed. Therefore, at the time of a VoIP call, wireless noise may enter the call due to the operating wireless LAN function.

  As a wireless noise prevention method, when the electric field detection level is higher than a predetermined value, the telephone call is made without passing through the analog filter, and when the electric field detection level is higher than the predetermined value, the analog filter is passed through to attenuate the wireless noise. A method for making a telephone call has been proposed (see, for example, Patent Document 1).

  In addition, as a method for guaranteeing voice quality, a system is proposed in which a voice band is secured even when an access point is on hold, and voice quality can be guaranteed without failing back even if a VoIP terminal makes a response again. (For example, refer to Patent Document 2).

Japanese Patent Laid-Open No. 06-077892 JP 2007-201967 A

  However, the wireless LAN router apparatus described above does not take measures to control the validity / invalidity of the wireless LAN function according to the VoIP call state in order to prevent wireless noise that affects the call.

  For this reason, the wireless LAN router apparatus described above does not control the wireless LAN function and the VoIP call function in association with each other for the purpose of preventing wireless noise in the call. Therefore, the wireless LAN function is controlled according to the VoIP call status. There is a problem that can not be done.

  Further, the wireless LAN router apparatus has a problem that wireless noise enters a VoIP call due to the operation of the wireless LAN function, and the call quality cannot be ensured. These problems cannot be solved by the methods described in Patent Documents 1 and 2 above.

  Accordingly, an object of the present invention is to provide a wireless LAN router device capable of controlling the wireless LAN function in accordance with the VoIP call situation, a wireless LAN function control method used therefor, and a program therefor, which solve the above problems. It is in.

A wireless LAN router device according to the present invention is a wireless LAN router device for home use equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
A control information management means for managing SIP (Session Initiation Protocol) session information of the VoIP call and the wireless LAN function in association with each other;
The control information management means uses a SIP session status notification as a trigger, and outputs a control command for the wireless LAN function to a wireless LAN driver ,
The control information management means outputs a control command for stopping the wireless LAN function according to the status of the VoIP call,
Upon receiving the SIP session establishment notification, the control information management means controls the wireless LAN driver to stop the wireless LAN function when the wireless LAN function operates and the wireless slave terminal does not belong to the own device. An instruction is output .

A wireless LAN function control method according to the present invention is a wireless LAN function control method used in a home wireless LAN router apparatus equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
The wireless LAN router device executes a control information management process for managing the SIP (Session Initiation Protocol) session information of a VoIP call in association with the wireless LAN function,
In the control information management process, a SIP session status notification is used as a trigger, and a control command for the wireless LAN function is output to a wireless LAN driver .
In the control information management process, a control command for stopping the wireless LAN function according to the state of the VoIP call is output,
In the control information management process, when the SIP session establishment notification is received, if the wireless LAN function operates and the wireless slave terminal does not belong to the own device, the wireless LAN driver causes the wireless LAN driver to stop the wireless LAN function An instruction is output .

A program according to the present invention is a program to be executed by a central processing unit in a home wireless LAN router device equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
A control information management process for managing SIP (Session Initiation Protocol) session information of a VoIP call and the wireless LAN function in association with each other;
In the control information management process, using a SIP session status notification as a trigger, the wireless LAN driver outputs a control command for the wireless LAN function ,
In the control information management process, a control command for stopping the wireless LAN function according to the state of the VoIP call is output,
In the control information management process, when the SIP session establishment notification is received, if the wireless LAN function operates and the wireless slave terminal does not belong to the own device, the wireless LAN driver causes the wireless LAN driver to stop the wireless LAN function An instruction is output .

  The present invention has an effect that the wireless LAN function can be controlled in accordance with the VoIP call situation by adopting the configuration and operation as described above.

It is a block diagram which shows the structural example of the wireless LAN router apparatus by the 1st Embodiment of this invention. It is a figure which shows the structural example of the management information table used for the control information management part shown in FIG. It is a flowchart which shows operation | movement of the control information management part shown in FIG. It is a flowchart which shows operation | movement of the control information management part shown in FIG. It is a block diagram which shows the structural example of the wireless LAN router apparatus by the 2nd Embodiment of this invention.

  Next, embodiments of the present invention will be described with reference to the drawings. First, an outline of a wireless LAN (Local Area Network) router apparatus according to the present invention will be described. A wireless LAN router device according to the present invention is a wireless LAN router device for home use equipped with a VoIP (Voice over Internet Protocol) function.

  The wireless LAN router device according to the present invention enables a VoIP call that ensures voice quality without generating wireless noise by stopping the wireless LAN function according to the VoIP call status.

  The wireless LAN router device according to the present invention includes a control information management unit that issues a SIP (Session Initiation Protocol) session status notification from the VoIP control unit as a trigger and issues a control command for the wireless LAN function to the wireless LAN driver.

  When receiving the SIP session establishment notification from the VoIP control unit, the control information management unit acquires information on whether the wireless LAN interface is operating from the wireless LAN driver.

  If the wireless LAN interface is operating, the control information management unit acquires information indicating whether the wireless slave terminal belongs to the wireless LAN router device from the wireless LAN driver.

  If the wireless slave terminal does not belong, the control information management unit issues a command to the wireless LAN driver to stop the wireless LAN interface. As a result, the control information management unit can stop the wireless LAN function and perform a VoIP call without generating wireless noise.

  When receiving the SIP session end notification from the VoIP control unit, the control information management unit issues a command to the wireless LAN driver to operate the wireless LAN interface, and restarts the wireless LAN function.

  As described above, in the wireless LAN router device according to the present invention, the control information management unit issues a control command for stopping the wireless LAN function during the VoIP call, so that the VoIP call can be performed without generating the wireless noise.

  FIG. 1 is a block diagram showing a configuration example of a wireless LAN router device according to the first embodiment of the present invention. In FIG. 1, a wireless LAN router device 1 includes a wireless LAN interface 11, a wireless LAN driver 12, a bridge module 13, a LAN interface 14, a control information management unit 15, a routing unit 16, and a VoIP control unit 17. The telephone terminal 18 and a WAN (Wide Area Network) interface 19 are provided, and the analog telephone 2 is connected to the telephone terminal 18.

  The wireless LAN interface 11 is an operation control target of the wireless LAN driver 12 and performs wireless communication with a wireless slave terminal (not shown) under the wireless LAN router device 1.

  The wireless LAN driver 12 controls the operation of the wireless LAN interface 11. That is, the wireless LAN driver 12 relays wireless packets between the wireless LAN interface 11 and the bridge module 13. Further, the wireless LAN driver 12 manages wireless slave terminal information belonging to the wireless LAN router device 1 and notifies the control information management unit 15 of the information.

  The bridge module 13 performs mutual conversion processing between the wired packet from the LAN interface 14 and the routing unit 16 and the wireless packet from the wireless LAN interface 11.

  The LAN interface 14 transmits and receives packets by connecting a LAN side terminal (not shown) under the wireless LAN router device 1.

  The control information management unit 15 manages information necessary for performing wireless control from the wireless LAN driver 12 and the VoIP control unit 17 using a management information table (not shown). The control information management unit 15 receives the SIP session information notification from the VoIP control unit 17 and manages the VoIP call state.

  In addition, the control information management unit 15 receives and manages the operation information of the wireless LAN interface 11 and the wireless slave device belonging information under the wireless LAN router device 1 from the wireless LAN driver 12, and sends the control information to the wireless LAN driver 12. Then, operation control of the wireless LAN interface 11 is performed.

  The routing unit 16 performs packet transfer processing to the LAN interface 14, the WAN interface 19, and the wireless LAN interface 11 based on the packet information from the bridge module 13 and the WAN interface 19.

  The VoIP control unit 17 performs SIP packet generation processing and SIP session state management used in the VoIP call by the analog telephone 2, and also performs RTP (Real Time Transport Protocol) packet generation processing, and exchanges packets with the routing unit 16. Do. In addition, the VoIP control unit 17 notifies the control information management unit 15 of SIP session information based on the start and end of a call.

  The telephone terminal 18 is a physical connection port of the analog telephone 2 and relays a voice signal between the VoIP control unit 17 and the analog telephone 2. The analog telephone 2 is connected to the telephone terminal 18 and operates as a terminal for performing a VoIP call.

  The WAN interface 19 connects a WAN side terminal (not shown) under the wireless LAN router device 1 and performs packet transmission / reception.

  FIG. 2 is a diagram showing a configuration example of a management information table used for the control information management unit 15 shown in FIG. In FIG. 2, the management information table includes information to be managed (“VoIP call state”, “wireless LAN function operating state”, “wireless handset belonging state”) and the current state (“busy / no call”), “In operation / stopping” and “belonging / not belonging”) are stored in association with each other.

  3 and 4 are flowcharts showing the operation of the control information management unit 15 shown in FIG. The operation of the control information management unit 15 shown in FIG. 1 will be described with reference to FIGS. The processing operations shown in FIGS. 3 and 4 can also be realized by a CPU (central processing unit) (not shown) in the wireless LAN router device 1 executing a program.

  The control information management unit 15 manages the VoIP call state, the wireless LAN operation state, and the wireless slave unit belonging state of the wireless LAN router device 1 by using the management information table (see FIG. 2). In the VoIP call state, management information is updated by a SIP session state notification from the VoIP control unit 17. There are two VoIP call states: “busy” and “no call”.

  The wireless LAN operation state and the wireless slave unit attribution state are acquired from the wireless LAN driver 12 and the information is updated. There are two wireless LAN operation states: “operating” and “stopped”. In addition, there are two types of wireless slave device attribution states: “with attribution” and “without attribution”.

  As an initial state in the present embodiment, it is assumed that the VoIP call state is “no call”, the wireless LAN operation state is “active”, and the wireless slave unit belonging state is “no attribution”.

  When the SIP session establishment notification is notified from the VoIP control unit 17 due to the start of the VoIP call (step S1 in FIG. 3), the control information management unit 15 operates the wireless LAN interface 11 from the wireless LAN driver 12, that is, the wireless LAN router. The wireless LAN operation information of the device 1 is acquired (step S2 in FIG. 3).

  The control information management unit 15 operates based on the acquired wireless LAN operation information (step S3 in FIG. 3). In the present embodiment, when the wireless LAN interface 11 has not been operated (“stopped” in step S3 in FIG. 3), the control information management unit 15 sets the management information table in FIG. The LAN function is stopped ”and“ wireless handset not attributed ”are updated (step S7 in FIG. 3), and the process is terminated without performing the wireless LAN function stop operation.

  When the operation information of the wireless LAN interface 11 is notified (“in operation” in step S3 in FIG. 3), the control information management unit 15 acquires the wireless slave unit attribution information from the wireless LAN driver 12 (step S4 in FIG. 3). .

  The control information management unit 15 operates based on the acquired wireless slave unit attribution information (step S5 in FIG. 3). In the present embodiment, the state is “no wireless slave device attribution”, but in the case of “wireless slave device attribution” (“assignment” in step S5 in FIG. 3), the control information management unit 15 performs the management of FIG. The information table is updated to “busy”, “wireless LAN in operation”, and “wireless handset belonging” (step S7 in FIG. 3), and the processing is terminated without performing the wireless LAN function stop operation.

  When the control information management unit 15 is notified of the information “not belonging to the wireless slave device” (“not assigned” in step S5 in FIG. 3), the control information management unit 15 issues a command to the wireless LAN driver 12 to stop the wireless LAN interface 11 (FIG. 3). 3 step S6). Upon receiving the command, the wireless LAN driver 12 stops the operation of the wireless LAN interface 11.

  The control information management unit 15 updates the management information table of FIG. 2 to “busy”, “wireless LAN function stopped”, and “wireless handset not affiliated” (step A7), and ends the wireless LAN function stop operation. .

  When the SIP session end notification is notified from the VoIP control unit 17 due to the end of the VoIP call (step S11 in FIG. 4), the control information management unit 15 issues a command to the wireless LAN driver 12 to restart the wireless LAN interface 11 (FIG. 4). Step S12). Upon receiving the command, the wireless LAN driver 12 restarts the operation of the wireless LAN interface 11.

  The control information management unit 15 updates the management information table of FIG. 2 to “No call”, “While operating wireless LAN function”, “No wireless handset belonging” (step S13 in FIG. 4), and restarting the wireless LAN function Exit.

  As described above, in the present embodiment, in order to prevent wireless noise in a call, the SIP session information and the wireless LAN function information by VoIP call are managed in association with each other. Therefore, the wireless LAN corresponding to the VoIP call state is managed. Function control can be performed.

  In this embodiment, since the wireless LAN function is stopped during a VoIP call, it is possible to prevent wireless noise due to the VoIP call.

  As a second embodiment of the present invention, the wireless LAN interface of a wireless LAN router device is set to IEEE (Institute of Electrical and Electronics Engineers) 802.11b / g band for wireless control operation when a cordless telephone is used as a telephone. Further, the invention is further devised in that it is divided into IEEE802.11a bands and controlled.

  That is, in the second embodiment of the present invention, in the specific example described above, the wireless LAN interface control target is limited to the wireless LAN interface (802.11b / g), and wireless control is performed. The configuration is shown in FIG.

  FIG. 5 is a block diagram showing a configuration example of a wireless LAN router device according to the second embodiment of the present invention. In FIG. 5, a wireless LAN router device 1a according to the second embodiment of the present invention includes a wireless LAN (802.11b / g) interface 11a and a wireless LAN (802.11a) interface 11b instead of the wireless LAN interface 11. 1 and a cordless telephone (base unit) 3 and a cordless telephone (slave unit) 4 instead of the analog telephone 2 are installed, the wireless LAN router apparatus according to the first embodiment of the present invention shown in FIG. 1 and the same components are denoted by the same reference numerals.

  The wireless LAN (802.11b / g) interface 11a performs wireless communication with a wireless slave terminal (not shown) under the wireless LAN router device 1a by wireless in the IEEE802.11b / g band of the wireless LAN router device 1a. .

  The wireless LAN (802.11a) interface 11b performs wireless communication with a wireless slave terminal (not shown) under the wireless LAN router device 1a by wireless in the IEEE802.11a band of the wireless LAN router device 1a.

  The cordless telephone (base unit) 3 and the cordless telephone (slave unit) 4 make a call using a radio band that easily interferes with the base unit and the sub unit in the IEEE802.11b / g band. Other operations are the same as those of the analog telephone 2 shown in FIG.

  The operation of this embodiment will be described with reference to FIG.

  The control information management unit 15 acquires the operation information of the wireless LAN (802.11b / g) interface 11a of the wireless LAN router device 1a from the wireless LAN driver 12 based on the SIP session information notification from the VoIP control unit 17.

  The wireless control target in this embodiment is only the wireless LAN (802.11b / g) interface 11a that easily interferes with the wireless band between the cordless telephone (master unit) 3 and the cordless telephone (slave unit) 4. Therefore, the wireless LAN operation of the wireless LAN (802.11a) interface 11b is irrelevant.

  Therefore, wireless communication in the IEEE802.11a band of the wireless LAN router device 1a is possible regardless of the VoIP call state. In addition, since the operation of the present embodiment is the same as that of the first embodiment of the present invention, the description thereof is omitted.

  As described above, in this embodiment, when a cordless telephone using a wireless band that easily interferes with the IEEE 802.11b / g band is used, the wireless control target is divided into the IEEE 802.11b / g band and the IEEE 802.11a band. Thus, since only the wireless LAN interface 11a in the IEEE802.11b / g band can be wirelessly controlled, the wireless LAN router apparatus 1a that causes wireless noise while performing wireless communication in the IEEE802.11a band performs IEEE802.11b. The effect of being able to control radio in the / g band is obtained.

  A part or all of the above embodiment can be described as in the following supplementary notes, but is not limited to the following description.

[Appendix 1]
A wireless LAN function control method used in a home wireless LAN router device equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
The wireless LAN router device executes a control information management process for managing the SIP (Session Initiation Protocol) session information of a VoIP call in association with the wireless LAN function,
In the control information management process, a SIP session status notification is used as a trigger, and a control command for the wireless LAN function is output to a wireless LAN driver.
In the control information management process, a control command for stopping the wireless LAN function according to the state of the VoIP call is output.

[Appendix 2]
In the control information management process, when the SIP session establishment notification is received, if the wireless LAN function operates and the wireless slave terminal does not belong to the own device, the wireless LAN driver causes the wireless LAN driver to stop the wireless LAN function The wireless LAN function control method according to appendix 1, wherein the command is output.

[Appendix 3]
3. The wireless LAN function control method according to appendix 2, wherein in the control information management process, when a SIP session end notification is received, a control command for operating the wireless LAN function is output to the wireless LAN driver.

[Appendix 4]
In the control information management process, the SIP session information of the VoIP call is used to prevent radio noise caused by the IEEE802.11b / g band to the call by the cordless telephone using the radio band that easily interferes with the IEEE802.11b / g band. 4. The wireless LAN function control method according to any one of appendix 1 to appendix 3, wherein a control command based on the wireless LAN function is output.

[Appendix 5]
A wireless LAN function control method used in a home wireless LAN router device equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
The wireless LAN router device executes a control information management process for managing the SIP (Session Initiation Protocol) session information of a VoIP call in association with the wireless LAN function,
In the control information management process, a SIP session status notification is used as a trigger, and a control command for the wireless LAN function is output to a wireless LAN driver.
In the control information management process, the SIP session information of the VoIP call is used to prevent radio noise caused by the IEEE802.11b / g band to the call by the cordless telephone using the radio band that easily interferes with the IEEE802.11b / g band. A wireless LAN function control method, comprising: outputting a control command for the wireless LAN function based on the wireless LAN function.

1,1a Wireless LAN router device 2 Analog telephone 3 Cordless telephone (base phone)
4 Cordless telephone (slave unit)
DESCRIPTION OF SYMBOLS 11 Wireless LAN interface 11a Wireless LAN (802.11b / g) interface 11b Wireless LAN (802.11a) interface 12 Wireless LAN driver 13 bridge module 14 LAN interface 15 Control information management part 16 Routing part 17 VoIP control part 18 Telephone terminal 19 WAN interface

Claims (5)

A wireless LAN router device for home use equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
A control information management means for managing the SIP (Session Initiation Protocol) session information of the VoIP call and the wireless LAN function in association with each other;
The control information management means uses a SIP session status notification as a trigger, and outputs a control command for the wireless LAN function to a wireless LAN driver ,
The control information management means outputs a control command for stopping the wireless LAN function according to the status of the VoIP call,
Upon receiving the SIP session establishment notification, the control information management means controls the wireless LAN driver to stop the wireless LAN function when the wireless LAN function operates and the wireless slave terminal does not belong to the own device. A wireless LAN router device that outputs a command . 2. The wireless LAN router device according to claim 1, wherein the control information management unit outputs a control command for operating the wireless LAN function to the wireless LAN driver when receiving a SIP session end notification . 3. The control information management means includes SIP session information of the VoIP call in order to prevent radio noise caused by the IEEE 802.11b / g band to a call by a cordless telephone using a radio band that easily interferes with the IEEE 802.11b / g band. 3. The wireless LAN router apparatus according to claim 1, wherein a control command for the wireless LAN function based on the wireless LAN function is output . A wireless LAN function control method used in a home wireless LAN router device equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
The wireless LAN router device executes a control information management process for managing the SIP (Session Initiation Protocol) session information of a VoIP call in association with the wireless LAN function,
In the control information management process, a SIP session status notification is used as a trigger, and a control command for the wireless LAN function is output to a wireless LAN driver.
In the control information management process, a control command for stopping the wireless LAN function according to the state of the VoIP call is output,
In the control information management process, when the SIP session establishment notification is received, if the wireless LAN function operates and the wireless slave terminal does not belong to the own device, the wireless LAN driver causes the wireless LAN driver to stop the wireless LAN function A wireless LAN function control method, comprising: outputting a command. A program to be executed by a central processing unit in a home wireless LAN router device equipped with at least a VoIP (Voice over Internet Protocol) function and a wireless LAN (Local Area Network) function,
A control information management process for managing SIP (Session Initiation Protocol) session information of a VoIP call and the wireless LAN function in association with each other;
In the control information management process, using a SIP session status notification as a trigger, the wireless LAN driver outputs a control command for the wireless LAN function,
In the control information management process, a control command for stopping the wireless LAN function according to the state of the VoIP call is output,
In the control information management process, when the SIP session establishment notification is received, if the wireless LAN function operates and the wireless slave terminal does not belong to the own device, the wireless LAN driver causes the wireless LAN driver to stop the wireless LAN function A program characterized by outputting an instruction.

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