JPS62118654A - Power supply control system - Google Patents

Abstract

PURPOSE:To disuse the maintenance of usual application of power for a terminal equipment at the incoming side by allowing a terminal equipment at the sender to apply power and replying the transition to the packet information receivable state thereafter. CONSTITUTION:Prior to communication, a call request packet is transferred from a packet form terminal equipment 4 to a packet form terminal equipment 1 via a line terminator 33, a packet exchange 32 and a line terminator 31. The call request packet is received by a line control section 24 as an incoming packet and stored in a packet reception buffer 231 of a storage section 23. A central processing section 21 checks the content of a power control flag 233, a power application bit is set when the power control flag 233 is '0' and a power application instruction is given to a power control section 12 from a host interface section 22 via a power application instruction line 51.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to automatic power-on means for a packet-type terminal device connected to a packet network.

〔overview〕

The present invention provides a power control method for a terminal device including a receiving means that becomes ready to receive incoming packet information after a while after being powered on, and the present invention provides a power supply control method for a terminal device that is powered on by a transmitting terminal device and then becomes ready to receive packet information. By replying that the transition has occurred, it is possible to eliminate the need to keep the receiving terminal device powered on all the time.

[Conventional technology]

Conventional packet type terminal devices cannot communicate unless the power is turned on in advance, and packet type terminal devices that need to frequently receive data must be powered on at all times.

[Problem that the invention seeks to solve]

In such a packet-type terminal device, the power must be turned on in advance before communication monitoring, so there is a drawback that it is difficult to automatically operate the packet-type terminal device.

The present invention aims to eliminate such drawbacks, and aims to provide a power control method that can turn on the power every time communication is started.

[Means for solving problems]

The present invention includes a terminal device equipped with a transmitting means for transmitting packet information and/or a receiving means for receiving incoming packet information, and the receiving means changes from an unpowered state to a powered-on state at a time before assuming a powered-on state. In a power control system used in a packet switching network that requires a transition to the on-going state, the transmitting terminal device is equipped with a first transmitting means for transmitting an initial call request packet signal, and the receiving terminal device is a first control means that transitions its own device from an unpowered state to a powered on state based on this initial call request packet signal, and transmits first information indicating this state transition to the transmitting terminal. and a first notification means for notifying the apparatus, and the transmitting terminal device includes a second transmitting means for repeatedly transmitting a call request packet signal to the receiving terminal device based on the first information. In preparation, the receiving terminal device transmits second information indicating the power-on state to the transmitting side based on a call request packet that arrives from the second transmitting means when the terminal device is in the power-on state. A second notification means for notifying a terminal device is provided, and the sending terminal device is provided with a second control means for enabling the sending means of the sending terminal device based on the second information. It is characterized by

[For production]

When the first call request packet signal arrives from the transmitting terminal device, the receiving terminal device is powered on. When this is notified to the sending terminal device, a call request packet is sent repeatedly, but if the power is turned on during this time, this is notified to the calling terminal device, and the transmission of the packet information starts. be done.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS A device according to an embodiment of the present invention will be explained below based on the drawings.

FIG. 1 is a block configuration diagram showing the configuration of this embodiment system. FIG. 2 is a diagram showing the contents of the power control flag, and when the power-on bit is rOJ and the power-on bit is "0", the power is not turned on. FIG. 3 is a sea fence diagram showing an incoming call retry procedure between packet type terminal devices.

FIG. 4 is a format diagram showing the contents of the recovery request packet.

First, the configuration of the system according to the embodiment of the present invention will be explained based on FIG. This embodiment system includes packet type terminal devices 1 and 4, a communication control device 2, and a packet y43. Here, the packet type terminal device 1 includes a packet type terminal main body section 11 and a power supply control section 12, and the communication control device 2 includes a central processing unit section 21 that processes packets to be sent and received, and a packet type terminal device 1. a host interface unit 22 that controls the control of the host interface unit 22, a packet reception buffer 231 that stores received packets, a packet transmission buffer 232 that stores transmitted packets, and a power control flag 233 that indicates that the packet type terminal device 1 is being powered on. 23 and a line control unit 24 that controls communication with the packet network 3, and the packet network 3 includes a line termination device 31 that connects the communication control device 2 and its own packet network, and a line termination device 31 that connects the communication control device 2 and its own packet network. The network includes a packet switch 32 that performs packet switching within its own packet network, and a line termination device 33 that connects the packet switch 32 and the packet type terminal device 4. Host interface section 22 and power supply control section 1
2 is a power-on instruction line 51 that transmits power-on instruction information.
The packet-type terminal main unit 11 and the host interface unit 22 are connected by a power-on completion report line 52 that transmits transmission-on completion information.

Next, the operation of this embodiment system will be explained based on FIGS. 1 to 4. Prior to communication, a call request packet is sent from the packet type terminal device 4 to the packet type terminal device 1 through the line termination device 33, the packet switch 32, and the line '41.
It is transferred via the AI end device 31. The call request packet is received by the line control unit 24 as an incoming call packet, and is stored in the packet reception buffer 231 of the storage unit 23. In the central processing unit 21 , the contents of the power control flag 233 are checked, and if the power control flag 233 is “0”, the power-on bit is turned on, and the power-on instruction line 51 is sent from the host interface unit 22 . A power-on instruction is given to the power control unit 12. Further, a recovery request packet in which the retry request flag during power-on shown in FIG. A disconnection confirmation packet is once sent from the packet-type terminal device 4 to the packet-type terminal device 1, and communication is terminated. However, since a recovery request packet with the power-on retry request flag in the on state is received, the packet-type terminal device 4 sends the disconnection confirmation packet to the packet-type terminal device 1 again. The call request packet is retransmitted from the terminal device 4. If the power-on bit of the power control flag 233 is on when the communication control device 2 receives the call request packet, the recovery request packet with the power-on retry request flag turned on is the packet. The data is transmitted from the transmission buffer 232 to the packet-format terminal device 4 via the line control unit 24 and the packet network 3. On the other hand, the power-on report line 52
When the host interface unit 22 is notified of the completion of power-on of the packet type terminal device 1 via the central processing unit 2
1, the power-on flag of the power control flag 233 is turned on. When the communication control device 2 receives the retransmitted call request packet, the power control flag 23
If the power-on flag of No. 3 is on, the connection between the packet-format terminal devices 1 and 4 is completed by transferring the incoming call acceptance packet to the packet-format terminal device 4.

〔Effect of the invention〕

As explained above, the present invention regards the reception of an incoming call packet as a power-on instruction, and can retry the connection request with the packet switching network while the power is turned on. Therefore, it is possible to keep the packet-type terminal device powered on at all times. This has the effect of enabling mutual communication between packet-type terminal devices even if the packet-type terminal devices are not used.

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram showing the configuration of a system according to an embodiment of the present invention. FIG. 2 is a frame configuration diagram showing the contents of the power control flag. FIG. 3 is a procedure diagram showing the operation of the system according to the embodiment of the present invention. FIG. 4 is a frame configuration diagram showing the contents of a recovery request packet. ■, 4...Packet type terminal device, 2...Communication control device, 3...Packet network, 11...Packet type terminal main unit, 12...Power supply control unit, 21...Central processing 22... Host interface unit, 23... Storage unit, 24... Line control unit, 31. 33... Line termination device, 32... Packet switch, 51... Power-on instruction line , 52...Power-on report line, 231...Packet reception buffer, 232...Packet transmission buffer, 233...Power control flag. Patent applicant: NEC Corporation 1, No. I- Representative: Patent attorney Naotaka Ide. Fig. 2 Operation of the embodiment Fig. 3 Recovery request packet Fig. 4

Claims (1)

[Claims] (1) A terminal device includes a transmitting means for transmitting packet information and/or a receiving means for receiving incoming packet information, and the receiving means is turned on from an unpowered state at a time before the power is turned on. In a power control system used in a packet-switched network that requires a transition to a middle state, the transmitting terminal device includes a first transmitting means for transmitting an initial call request packet signal, and the receiving terminal device , a first control means for transitioning its own device from an unpowered state to a powered on state based on this initial call request packet signal, and a first control means that transfers first information indicating this state transition to the transmitting terminal and a first notification means for notifying the receiver, and the transmitting terminal device includes a second transmitting means for repeatedly transmitting a call request packet signal to the receiving terminal device based on the first information. , the receiving terminal device transmits second information indicating the power-on state to the transmitting terminal based on the call request packet that arrives from the second transmitting means when the receiving terminal device is in the power-on state. The transmitting terminal device is provided with a second notification means for notifying the device, and the transmitting terminal device is equipped with a second control means for enabling the transmitting means of the transmitting terminal device based on the second information. Characteristic power control method.