KR20030060482A - Apparatus for managing power of transmitting unit, transmitting unit equipped with power managing function in communication system and method thereof - Google Patents

Abstract

PURPOSE: An ATU-C(ADSL Transceiver Unit-Central office end) having a power management function is provided to set a power mode of the ATU-C to a power saving mode if unavailable cell data more than a predetermined number is counted in an unavailable cell counter, thereby implementing low power consumption. CONSTITUTION: A transmitting/receiving unavailable cell monitor(32) periodically monitors whether unavailable cell data is transmitted or received in an ATU-C. If the unavailable cell data is recognized in the transmitting/receiving unavailable cell monitor(32), transmitting/receiving unavailable cell counters(33a,33b) count the number of the unavailable cell data. If the unavailable cell data is counted more than a predetermined number in the transmitting/receiving unavailable cell counters(33a,33b), a power mode setup unit(35) informs the ATU-C that the ATU-C sets a power mode to a power saving mode.

Description

Apparatus for managing power of transmitting unit, transmitting unit equipped with power managing function in communication system and method }

The present invention relates to a power management apparatus of a central station side transmission apparatus in a communication system. More particularly, the present invention relates to a power management apparatus in which a central station side transmission apparatus reduces power when the central station side transmission apparatus is not performing communication. A power management apparatus for a central station side transmission apparatus, a central station side transmission apparatus having a power management function, and a power management method thereof.

The ADSL system is a technology that transmits digital information at high bandwidth by using telephone lines installed in homes and businesses, and is currently most commonly used in homes.

1 is a block diagram of a general ADSL system.

Referring to FIG. 1, a Digital Subscriber Line Access Multiplexer (DSLAM) uses a multiplexer 22 and a plurality of ADSL transceiver units (ATU-C) 30. The DSLAM is connected to the ATM switch 10 to transmit and receive ATM cells. In addition, one ATU-C 30 has a plurality of ports such that a plurality of (eg, 32) ADSL transceiver unit-remote end (ATU-R) 40 can be connected.

With the power on, the ATU-R 40 requests a connection to the ATU-C 30 to establish a link with the ATU-C 30. Then, synchronization is made between the ATU-R 40 and the ATU-C 30, and a link is formed after the communication speed is determined. However, as the ADSL market rapidly grows and the number of subscribers increases, the number of ATU-Rs 40 linked to the ATU-C 30 increases, and a high power is applied to establish and maintain a link. ), The power consumption is greatly increased.

On the other hand, although the ATU-R 40 is almost active in the active state, that is, the link is formed, high power is applied as in the case where the data is transmitted and received while the data is not transmitted or received, There is a problem that the power is wasted, the life of the equipment is shortened.

Therefore, a method for saving power of a modem in an ADSL system has been continuously developed. However, in the related art, there is only a simple method of determining whether the computer is used and automatically turning off the ATU-R when the computer is turned off.

The technical problem to be achieved by the present invention is a power management device of the central station side transmission apparatus in the ADSL system to reduce the power when the invalid data cells are continuously transmitted and received, the central station side with a power management function The present invention provides a transmission device and a power management method thereof.

1 is a block diagram of a general ADSL system,

2 is a block diagram of a central station transmission apparatus with power management function in an ADSL system according to an embodiment of the present invention;

3 is a flowchart of a power management method in an ADSL system according to the present invention.

* Explanation of symbols for main parts of the drawings

10: ATM Switch 22: Multiplexer

30: ATU-C 40: ATU-R

32: power management unit 32: invalid cell monitoring unit

35: power mode setting section 36: ADSL modem section

37: control unit 38: power distribution unit

In order to achieve the above technical problem, the power management apparatus of the central station side transmitter in the ADSL system according to the present invention is connected to the subscriber side transmitter (ATU-R) and the central station side transmitter (ATU-C) to link data. A power management apparatus of a central station side transmitting apparatus in an ADSL system for transmitting and receiving, comprising: a transmitting and receiving invalid cell monitoring unit for periodically monitoring whether invalid cell data is transmitted or received to the central station side transmitting apparatus; Transmission and reception invalid cell counters that count the number of invalid cell data when invalid cell data is recognized by the invalid cell monitoring unit; And a power mode setting unit for notifying the central station side transmission apparatus to set the power mode of the central station side transmission apparatus to a power saving mode which is reduced from normal power when the counter cell counts more than a predetermined number of invalid cell data.

In the power saving mode, the link between the subscriber-side transmitter and the central station-side transmitter is preferably maintained. The apparatus may further include a timer that operates when the counter starts counting invalid cell data and notifies that a predetermined time has elapsed. The power mode setting unit may set a power mode after a time set by the timer has elapsed. It is preferable to set the power saving mode.

In order to achieve the above object, in the ADSL system, a central station-side transmitter having a power management function is connected to a subscriber station transmitter (ATU-R) and a central station-side transmitter (ATU-C) to transmit and receive data. In the central station side transmission apparatus equipped with a power management function in the system, when the number of invalid cell data transmitted or received reaches a predetermined number or more, the central station side transmission apparatus manages the power mode of the central station side transmission apparatus in a power saving mode which is reduced from the normal power. A power management unit; When the power management mode is set by the power management mode, the ADSL modem unit for generating power in accordance with the set mode; and a power distribution unit for applying the generated power to the port corresponding to the subscriber modem.

In order to achieve the above object, a method of managing power of a central station transmitter in an ADSL system includes a subscriber station transmitter (ATU-R) and a central station transmitter (ATU-C) linked to transmit and receive data. CLAIMS 1. A method for managing power of a central station transmission apparatus in an ADSL system, the method comprising: an invalid cell monitoring step of periodically monitoring whether invalid cell data that is not valid is transmitted or received to the central station transmission apparatus; An invalid cell counting step of counting the number of invalid cell data transmitted or received if the invalid cell data is monitored; And a power mode setting step of notifying, when a predetermined number or more of invalid cell data are counted, to set the power mode of the central station side transmission apparatus to a power saving mode which is reduced from normal power.

In order to achieve the above another object, in the ADSL system, the power management method of the central station side transmitting apparatus includes an ADSL system in which a subscriber side transmitting apparatus (ATU-R) and a central station transmitting apparatus (ATU-C) are linked to transmit and receive data. In the power management method of the central station side transmission apparatus, when the number of invalid cell data transmitted or received reaches a predetermined number or more, power management for managing the power mode of the central station side transmission apparatus in a power saving mode which is reduced from the normal power step; A power generation step of generating power according to the set mode when the power saving mode is set; And a power distribution step of applying the generated power to a port corresponding to the corresponding subscriber modem.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail.

2 is a block diagram of a central station side transmission apparatus having a power management function in an ADSL system according to an embodiment of the present invention.

In FIG. 2, the central station transmitter has a power management function. In FIG. 2, the power manager 31 may be manufactured as a separate module and inserted into the DSLAM to manage power of the central station transmitter.

Referring to Fig. 2, the central station-side transmission apparatus having a power management function includes a power management unit 31, an ADSL modem unit 36, and a power distribution unit 38.

The power management unit 31 counts this when an idle cell that does not contain information is continuously input, and when the counted value exceeds a predetermined value, the ADSL modem switches to a power down mode. The part 36 is notified. The power manager 31 includes an invalid cell monitor 321, a counter 33, a timer 34, and a power mode setting unit 35.

The invalid cell monitoring unit 32 periodically monitors whether invalid cell data is inputted or outputted instead of normal valid cell data. The invalid cell monitoring unit 32 reads the cell start of cell (SOC) information stored in the cell received from the subscriber station (ATU-R) to determine whether the cell is valid data or invalid data at the utopia interface. Determine whether or not. In addition, the invalid cell monitoring unit 32 notifies the transmission counter 33a or the reception counter 33b whether the cell transmitted or received from the subscriber station apparatus ATU-R is valid data or invalid data.

The transmission counter 33a and the reception counter 33b respectively count the number of valid transmission / reception (Tx / Rx) cells. When the transmission counter 33a and the reception counter 33b are notified that the cell transmitted or received by the invalid cell monitoring unit 32 is valid data, the transmission counter 33a and the counter counter 33b count the SOC and store the cell stored in the counter 33a or 33b. Increment the number by 1. On the other hand, when the transmission counter 33a and the reception counter 33b are notified that the cell transmitted or received by the invalid cell monitoring unit 32 is invalid data, the transmission counter 33a resets the counter to '0'.

The transmission timer 34a and the reception timer 34b are time delay devices for delaying the power saving mode operation to a predetermined time. The transmission timer 34a or the reception timer 34b operates from the time when the transmission counter 33a or the reception counter 33b is reset to '0'.

If the transmission counter 33a and the reception counter 33b are both reset to '0' after a predetermined time has elapsed, that is, when invalid data is continuously input, the central station side transmission apparatus It is notified that the power mode of the power mode is set to a power saving mode which is reduced from the normal power. The voltage set in this power saving mode is a voltage that maintains the link between the subscriber-side transmitter and the central station-side transmitter.

The ADSL modem unit 7 transmits and receives data at the ATM cell level through a utopia interface, and conversion between analog signals and digital signals is performed. Information of the mode set by the power mode setting unit 35 is transmitted to the control unit 37 of the ADSL modem unit 36. Then, the control unit 37 manages the power according to the received mode information. For example, with 16 bits of serial data input, a 400mV step resolution 15 step programming code from 7.5V to 13.1V is generated and transmitted to the power distribution unit 9.

The power distribution unit 9 separates and supplies power to each port.

3 is a flowchart of a power management method in an ADSL system according to the present invention.

First, the subscriber side transmitter and the central station transmitter must be linked to each other in order for data to be transmitted and received.

In this linked state, when data is transmitted and received (step 310), the effective cell monitoring unit 32 of the power management unit 31 checks whether the transmitted (Tx) or received (Rx) data cell is valid. (Step 312). The invalid cell monitoring unit 32 confirms the data transmitted / received to the central station transmitter 30 as a SOC signal of a utopia. If the transmitted / received data cells are valid data, the corresponding transmission / reception counters 33a and 33b are incremented (step 314), and the timer is kept at a default value of '0' (step 315). Since the power mode setting unit 35 sets the power normal mode (step 316), normal power (about 15V) is continuously given to the corresponding port.

On the other hand, if the invalid cell monitoring unit 32 checks the data transmitted or received by the central station transmitter 30, and the data cell transmitted or received is invalid, the counter is reset to '0' (step 318). ). Then, the timer is operated (step 320) to wait until the set time. If the time set in the timer is exceeded (step 322), the power mode setting unit 35 sets the power saving mode (step 324). Then, the power of the port corresponding to the subscriber station is reduced (step 326).

Since invalid data is input for a predetermined time, the valid cell monitoring unit 32 periodically checks whether valid valid cell data is inputted or outputted even while a voltage corresponding to the power saving mode is applied to the port of the central station transmitter. Watch. If the transmission and reception of valid data cells are detected, the central station transmitting apparatus is set to the power normal mode by repeating steps 314 to 316 described above.

According to the present invention, when an invalid data cell is continuously transmitted and received, the power is reduced to save power, and thus idle data, which is not actually necessary for the subscriber, in the state where the power of the ADSL modem installed in the subscriber's premises is not turned off. When the state or invalid data state persists, the ATU-C and ATU-R can be lowered while the link of the network remains active. In addition, subscribers are not aware of these power-saving problems at all, and can be integrated into software on the system, saving time and money for maintenance.

In the above described and described with respect to the preferred embodiment of the present invention, the present invention is not limited to the specific preferred embodiment described above, in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

Claims (18)

A power management apparatus of a central station-side transmitter in a communication system in which a subscriber-side transmitter and a central station-side transmitter are linked to transmit and receive data, A transmission and reception invalid cell monitoring unit periodically monitoring whether invalid cell data that is not valid is transmitted or received to the central station side transmission apparatus; Transmission and reception invalid cell counters that count the number of invalid cell data when invalid cell data is recognized by the invalid cell monitoring unit; And And a power mode setting unit for notifying the central station side transmission apparatus to set the power mode of the central station side transmission apparatus to a power saving mode which is reduced from the normal power when the number of invalid cell data is counted by the counter. Power management system of the central station transmission system in. The method of claim 1, And a link between the subscriber station transmitter and the central station transmitter in the power saving mode is maintained. The method of claim 1, A timer that operates when the counter starts counting invalid cell data and notifies that a predetermined time has elapsed; And the power mode setting unit sets the power mode to a power saving mode after the time set by the timer has elapsed. The method of claim 1, And the power mode setting unit sets the power mode to a power saving mode when both the transmission and reception invalid cell counters are more than a predetermined number. In the central station side transmission apparatus having a power management function in a communication system in which a subscriber side transmission apparatus and a central station transmission apparatus are linked to transmit and receive data, A power management unit for managing the power mode of the central station transmission apparatus in a power saving mode in which the number of invalid cell data transmitted or received is greater than or equal to a predetermined number; A modem unit generating power according to the set mode when the power management unit is set to a power saving mode; and And a power distribution unit for applying the generated power to a port corresponding to a corresponding subscriber modem. The method of claim 5, And a link between the subscriber station transmitter and the central station transmitter in the power saving mode is maintained. The method of claim 5, The power management unit, A transmission and reception invalid cell monitoring unit periodically monitoring whether invalid cell data that is not valid is transmitted or received to the central station side transmission apparatus; Transmission and reception invalid cell counters that count the number of invalid cell data when invalid cell data is recognized by the invalid cell monitoring unit; And And a power mode setting unit for notifying the central station side transmission apparatus to set the power mode of the central station side transmission apparatus to a power saving mode which is reduced from the normal power when the number of invalid cell data is counted by the counter. Central station transmitter with power management function. The method of claim 7, wherein A timer that operates when the counter starts counting invalid cell data and notifies that a predetermined time has elapsed; And the power mode setting unit sets a power mode to a power saving mode after a time set by the timer has elapsed. The method of claim 7, wherein And the power mode setting unit sets the power mode to a power saving mode when both the transmission and reception invalid cell counters are more than a predetermined number. A method of managing power of a central station transmitter in a communication system in which a subscriber station transmitter and a central station transmitter are linked to transmit and receive data, An invalid cell monitoring step of periodically monitoring whether invalid cell data that is not valid is transmitted or received to the central station transmission apparatus; An invalid cell counting step of counting the number of invalid cell data transmitted or received if the invalid cell data is monitored; And A power mode setting step of notifying, when a predetermined number or more of invalid cell data are counted, a power mode setting step of notifying the power mode of the central station side transmission apparatus to be set to a power saving mode reduced from a normal power; Power management method of transmission device. The method of claim 10, And a link between the subscriber station transmitter and the central station transmitter in the power saving mode is maintained. The method of claim 10, When the invalid cell data starts to be counted, notifying that a predetermined time has elapsed by operating a timer; And the power mode setting step sets a power mode to a power saving mode after a predetermined time has elapsed. The method of claim 10, And the power mode setting step sets a power mode to a power saving mode when both of the transmission and reception invalid cells have a predetermined number or more. In the power management method of the central station transmitter in a communication system in which a subscriber station transmitter and a central station transmitter are linked to transmit and receive data, A power management step of managing, when the number of invalid cell data transmitted or received is a predetermined number or more, the power mode of the central station side transmission apparatus in a power saving mode which is reduced from the normal power; A power generation step of generating power according to the set mode when the power saving mode is set; And And a power distribution step of applying the generated power to a port corresponding to a corresponding subscriber modem. The method of claim 14, And a link between the subscriber station transmitter and the central station transmitter in the power saving mode is maintained. The method of claim 14, The power management step, An invalid cell monitoring step of periodically monitoring whether invalid cell data that is not valid is transmitted or received to the central station transmission apparatus; An invalid cell counting step of counting the number of invalid cell data transmitted or received if the invalid cell data is monitored; And A power mode setting step of notifying, when a predetermined number or more of invalid cell data are counted, a power mode setting step of notifying the power mode of the central station side transmission apparatus to be set to a power saving mode reduced from a normal power; Power management method of transmission device. The method of claim 16, When the invalid cell data starts to be counted, notifying that a predetermined time has elapsed by operating a timer; And the power mode setting step sets a power mode to a power saving mode after a predetermined time has elapsed. The method of claim 16, And the power mode setting step sets a power mode to a power saving mode when both of the transmission and reception invalid cells have a predetermined number or more.