JP5610315B2 - Subscriber premises optical line termination device, power saving control method, and power saving control program - Google Patents

Description

  The present invention relates to a subscriber premises optical line terminating device (hereinafter referred to as “ONU (Optical Network Unit)”), a power saving control method, and a power saving control program in an optical communication system using an optical network. The present invention particularly relates to an ONU, a power saving control method, and a power saving control program suitable for an optical communication system using a wireless local area network (LAN).

  An optical communication system using an optical network is generally used not only in an office but also at home. FIG. 8 shows an optical communication system of the related art 1 as described above. In this optical communication system 100, one end of the optical fiber network 101 serves as a termination device at the central office of a communications carrier, which is called a communications carrier side optical line termination device (hereinafter referred to as “OLT (Optical Line Terminal)”) 102. It is connected. The other end of the optical fiber network 101 is connected to the ONU 103. A communication terminal 105 is connected to the ONU 103 via a wired LAN (Local Area Network) 104.

  In such an optical communication system 100, power saving control using the ONU 103 has been proposed. In Related Art 1, a plurality of power supply switches are arranged inside the ONU 103, and power consumption is suppressed by individually controlling the timing of supplying power to various processing parts (see Patent Document 1). .

  In the optical communication system 100 shown in FIG. 8, since the communication terminal 105 is connected to the ONU 103 via the wired LAN 104, the ONU 103 can detect this when the communication terminal 105 is not in use. Therefore, it is possible to save the power consumption of the ONU 103 when the communication terminal 105 is not used.

  FIG. 9 shows an optical communication system of Related Technique 2. In the optical communication system 110 illustrated in FIG. 9, a wireless LAN adapter 111 is connected to the ONU 103 via a wired LAN 104. The wireless LAN adapter 111 communicates with the communication terminal 113 via the wireless LAN 112. In the optical communication system 110, the wireless LAN adapter 111 and the communication terminal 113 communicate wirelessly. Therefore, the ONU 103 cannot determine whether or not the wireless LAN is used by the communication terminal 113 and cannot perform its own power saving control.

  FIG. 10 shows an optical communication system of the related art 3. In the optical communication system 120 illustrated in FIG. 10, the ONU 121 has a wireless LAN function. The ONU 121 communicates with the communication terminal 113 via the wireless LAN 112. In Related Art 3, an ONU 121 that performs power saving control in accordance with whether or not a wireless LAN is used has been proposed (see Patent Document 2).

JP 2007-089027 A JP 2011-171823 A

  As shown in FIG. 9, when the wireless LAN 112 that has been spreading widely is used by the ONU 103, the wireless LAN adapter 111 is connected to the wired LAN 104 of the ONU 103. For this reason, the ONU 103 cannot determine whether or not the wireless LAN is used, and thus cannot perform power saving control.

  As shown in FIG. 10, when the ONU 121 has a wireless LAN function and the ONU 121 is configured to wirelessly communicate with the communication terminal 113, it is determined whether or not the wireless LAN is used with or without wireless radio waves. In some cases, the efficiency of power consumption cannot be improved.

  That is, Patent Document 2 has a system configuration in which the ONU 121 has a wireless LAN function, and the ONU 121 communicates with the communication terminal 113 via the wireless LAN 112. The ONU 121 performs power saving control according to whether or not the wireless LAN is used. However, since the ONU 121 determines whether or not the wireless LAN is used based on the presence or absence of the wireless radio wave, the ONU 121 erroneously detects a wireless radio wave that is not used by the ONU 121. If this happens, there is a risk that power saving control cannot be performed normally. Further, when the wireless LAN quality is deteriorated and communication between the ONU 121 and the communication terminal 113 is not normally performed, communication between the ONU 121 and the upper OLT 102 cannot be normally performed. In this state, the power of a PON (Passive Optical Network) control unit in the ONU 121 is wasted, and the efficiency of power consumption cannot be improved.

  Therefore, an object of the present invention is to provide an ONU or the like that enables appropriate power saving control.

The subscriber premises optical line termination device according to the present invention is:
A subscriber premises optical line terminator provided between a telecommunications carrier side optical line terminator and a communication terminal and having a function of setting itself to a power saving mode,
Communication terminal detecting means for detecting the authenticated communication terminal;
Communication quality judging means for judging whether or not the communication quality of the communication terminal detected by the communication terminal detecting means is good;
When the communication terminal is not detected by the communication terminal detection unit or when the communication quality determination unit determines that the communication quality is not good, the mode is set to the power saving mode when the state continues for a predetermined time or more. Power saving mode setting means;
It is characterized by providing.

The power saving control method according to the present invention includes:
A power saving control method used in a subscriber premises optical line termination device provided between a communication carrier side optical line termination device and a communication terminal and having a function of setting itself to a power saving mode,
A communication terminal detection step of detecting the authenticated communication terminal;
A communication quality determination step for determining whether or not the communication quality of the communication terminal detected in the communication terminal detection step is good;
When the communication terminal is not detected in the communication terminal detection step or when the communication quality is determined not good in the communication quality determination step, the power saving mode is set if the state continues for a certain time or more. A power saving mode setting step;
It is characterized by including.

The power saving control program according to the present invention is
A power-saving control program provided between a telecommunications carrier-side optical line terminator and a communication terminal, which has a function of setting itself to a power-saving mode, and is used in a customer premises optical line terminator provided with a computer. Because
Communication terminal detecting means for detecting the authenticated communication terminal;
Communication quality judging means for judging whether or not the communication quality of the communication terminal detected by the communication terminal detecting means is good;
When the communication terminal is not detected by the communication terminal detection unit or when the communication quality determination unit determines that the communication quality is not good, the mode is set to the power saving mode when the state continues for a predetermined time or more. Power saving mode setting means;
For causing the computer to function.

  ADVANTAGE OF THE INVENTION According to this invention, ONU etc. which can perform appropriate power saving control by controlling the power consumption of ONU based on the authentication condition and communication quality of a communication terminal can be provided.

FIG. 3 is a functional block diagram illustrating each unit of the ONU according to the first embodiment. 1 is a block diagram illustrating an optical transmission system using an ONU according to Embodiment 1. FIG. 2 is a block diagram illustrating a hardware configuration of an ONU according to Embodiment 1. FIG. 6 is a flowchart illustrating an operation (part 1) of the ONU according to the first embodiment. 6 is a flowchart illustrating an operation (part 2) of the ONU according to the first embodiment. 6 is a block diagram illustrating an optical transmission system using an ONU according to Embodiment 2. FIG. FIG. 5 is a block diagram illustrating a hardware configuration of an ONU according to a second embodiment. It is a block diagram which shows the optical transmission system of related technology 1. It is a block diagram which shows the optical transmission system of the related technique 2. FIG. It is a block diagram which shows the optical transmission system of the related technique 3. FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as “embodiments”) will be described with reference to the accompanying drawings. In the present specification and drawings, the same reference numerals are used for substantially the same components.

  FIG. 1 is a functional block diagram illustrating each means of the ONU according to the first embodiment. FIG. 2 is a block diagram illustrating an optical transmission system using the ONU according to the first embodiment. Hereinafter, description will be given based on these drawings.

  The ONU 131 according to the first embodiment is provided between the OLU 102 and the communication terminal 113 and has a function of setting itself to the power saving mode, as well as the communication terminal detecting means 11, the communication quality determining means 12, and the power saving mode setting means. 13 is provided.

  The communication terminal detection unit 11 detects an authenticated communication terminal 113. The communication quality determination unit 12 determines whether the communication quality of the communication terminal 113 detected by the communication terminal detection unit 11 is good. When the communication terminal 113 is not detected by the communication terminal detection unit 11 or when the communication quality determination unit 12 determines that the communication quality of the communication terminal 113 is not good, the power saving mode setting unit 13 If it continues for more than a certain period of time, the power saving mode is set.

  The ONU 131 may further include a power saving mode canceling unit 14. After the power saving mode canceling means 14 is set to the power saving mode by the power saving mode setting means 13, the communication terminal 113 is detected by the communication terminal detecting means 11, and the communication quality of the communication terminal 113 is determined by the communication quality judging means 12. If a good judgment is made, the power saving mode is canceled if the state continues for a certain period of time.

  When a plurality of communication terminals 113 are detected by the communication terminal detection unit 11, the power saving mode setting unit 13 has poor communication quality at the communication quality determination unit 12 for all the communication terminals 113 detected by the communication terminal detection unit 11. When it is determined that the power saving mode is set, the power saving mode may be set. When a plurality of communication terminals 113 are detected by the communication terminal detection unit 11, the power saving mode release unit 14 has a communication quality good by the communication quality determination unit 12 for at least one communication terminal 113 detected by the communication terminal detection unit 11. When it is determined that the power saving mode is canceled when the state continues for a certain period of time or longer.

  The power saving control method according to the first embodiment captures the operation of the ONU 131 according to the first embodiment as a method invention. The power saving program according to the first embodiment is for causing the computer to function each unit of the ONU 131 according to the first embodiment. The program may be recorded on a non-transitory storage medium, such as an optical disk or a semiconductor memory. In this case, the program is read from the recording medium by a computer and executed.

  Hereinafter, the ONU 131 according to the first embodiment will be described in more detail with reference to FIGS.

  FIG. 2 shows an optical communication system 130 using the ONU 131. In the optical communication system 130, one end of the optical fiber network 101 is connected to a terminal device at a central office of a communication carrier called OLT 102. The other end of the optical fiber network 101 is connected to the ONU 131. The ONU 131 communicates with the communication terminal 113 via the wireless LAN 112.

  FIG. 3 shows the hardware configuration of the ONU 131. The ONU 131 includes a main control unit 133 including a computer having a CPU (Central Processing Unit) 133a and a memory 133b. The CPU 133a in the main control unit 133 controls the following units in the ONU 131 by executing a control program (including the power saving control program of the first embodiment) stored in the memory 133b.

  The optical transmission / reception unit 134 is a part serving as an interface with the optical fiber network 101. A PON (Passive Optical Network) control unit 135 performs processing such as modulation and demodulation processing of an optical signal received from the OLT 102 or transmitted to the OLT 102, a PON protocol with the OLT 102, and the like.

  The radio control unit 136 performs modulation and demodulation processing and radio protocol processing of a signal received from the communication terminal 113 or transmitted to the communication terminal 113. Further, the wireless control unit 136 has a function of monitoring the state of the wireless communication path such as a communication error rate and the number of retransmissions. Further, the wireless control unit 136 has a function of performing an authentication operation at the start of connection as a general procedure of wireless LAN connection when the communication terminal 113 attempts to start communication. This is to ensure security by preventing communication terminals other than predetermined ones from using the wireless LAN.

  An RF (Radio Frequency) / IF (Interface) unit 137 performs conversion processing between an intermediate frequency handled inside the ONU 131 and a high frequency transmitted and received outside. The RF / IF unit 137 serves as an interface with a LAN (wireless LAN) using the wireless LAN 112. Further, the RF / IF unit 137 is connected to a wireless antenna 138.

  The main control unit 133 performs power saving control according to the authentication status of the communication terminal 113 and the status of the wireless communication path such as the communication error rate and the number of retransmissions acquired from the wireless control unit 136.

  4 and 5 show the flow of power saving control performed in accordance with the state in which the ONU 131 according to the first embodiment receives radio waves from the communication terminal 113. FIG.

  First, the main control unit 133 monitors the presence / absence of the authenticated communication terminal 113 (step A1). When the authenticated communication terminal 113 cannot be detected (step A2) (N), a value “0” is substituted into the counter C2 (step A3). Then, referring to the variable that holds the power control state, if the power control state is “normal power control mode” (step A4) (Y), “1” is added to the counter C1 (step A5). When the value of the counter C1 is equal to or greater than the predetermined time t1 (step A6) (Y), the value “0” is substituted into the counter C1 (step A7), and the power is supplied to the variable that holds the power control state The fact that the control state is “power saving control mode” is substituted (step A8), and power saving control is performed on the PON control unit 135 (step A9).

  When the authenticated communication terminal 113 can be detected (step A2) (Y), the wireless quality is monitored (step A10). If the wireless quality is good (step A11) (Y), the processing of FIG. 5 is continued. In the process of FIG. 5, the value “0” is substituted into the counter C1 (step B1). If the power control state is “power saving control mode” (step B2) (Y) with reference to a variable holding the power control state, “1” is added to the counter C2 (step B3). When the value of the counter C2 is equal to or greater than the predetermined time t2 (step B4) (Y), the value “0” is substituted into the counter C2 (step B5), and the power is supplied to the variable that holds the power control state. The fact that the control state is “normal power control mode” is substituted (step B6), and normal power control is performed on the PON control unit 135 (step B7).

  In step A4, if the power control state is “power saving control mode” (step A4) (N), the control is returned to the start. In step A6, if the value of the counter C1 is less than the predetermined time t1 (step A6) (N), the control is returned to the start. In step A11, when the wireless quality is poor (step A11) (N), the processing after step A3 is continued.

  In step B2, if the power control state is not “power saving control mode” (step B2) (N), the control is returned to the start. In step B4, when the value of the counter C2 is less than the predetermined time t2 (step B4) (N), the control is returned to the start.

  Examples of power saving control for the PON control unit 135 include returning a circuit portion to an initial state where communication is not being performed, or stopping power supply. Further, if the PON control unit 135 has a power saving operation mode for reducing power consumption, the mode can be shifted to the power saving operation mode.

  The counter C1 in FIG. 4 and FIG. 5 indicates whether or not it has continued for a predetermined time t1 or longer when the authenticated communication terminal 113 cannot be detected, or when the authenticated communication terminal 113 can be detected and the radio quality is poor. Used to determine When the value of the counter C1 is equal to or greater than a predetermined time t1, power saving control is performed. The counter C2 is used to determine whether or not the authenticated communication terminal 113 can be detected and the radio quality is good, and whether or not it has continued for a predetermined time t2. When the value of the counter C2 becomes equal to or greater than a predetermined time t2, normal power control is performed.

  By using the counter C1 and the counter C2, erroneous power control can be prevented. The variable for holding the power control state is used to hold whether the current power control state is performing power saving control or performing normal power control. As described above, the power consumption of the ONU 131 can be efficiently controlled and the power consumption can be suppressed.

  As described above, according to the first embodiment, the power consumption of the ONU 131 can be controlled efficiently. The reason is to control the power consumption of the ONU 131 based on the authentication status of the wireless LAN communication terminal 113 and the wireless LAN quality. As a result, the ONU 131 can effectively perform power saving control.

  FIG. 6 is a block diagram illustrating an optical transmission system using the ONU according to the second embodiment. FIG. 7 is a block diagram illustrating a hardware configuration of the ONU according to the second embodiment. Hereinafter, description will be given based on these drawings.

  FIG. 6 shows an optical communication system 140 using the ONU 141 of the second embodiment. In the optical communication system 140, the optical fiber network 101 is connected to the ONU 141. In addition to communicating with the communication terminal 113 via the wireless LAN 112, the ONU 141 communicates with other communication terminals 313 via the wired LAN 312.

  FIG. 7 shows the ONU 141 and its peripheral devices. The ONU 141 includes a main control unit 143 including a computer having a CPU 143a and a memory 143b. The memory 143b stores a control program (including the power saving control program of the second embodiment) applied to the ONU 141. The CPU 143a controls each unit in the ONU 141 by executing this control program.

  The optical transmission / reception unit 134, the wireless control unit 136, and the RF / IF unit 137 are the same as those of the first embodiment. The PON control unit 135 is connected to the wired control unit 301 in addition to the optical transmission / reception unit 134 and the wireless control unit 136.

  The wired control unit 301 performs protocol processing of a signal received from the communication terminal 313 or a signal transmitted to the communication terminal 313. A wired LAN 312 is connected to the communication terminal 313, and a PHY (PHYsical Layer) unit 302 is disposed between the wired LAN 312 and the wired control unit 301. The PHY unit 302 is a part serving as an interface with the wired LAN 312 and performs conversion processing between data handled inside the ONU 141 and data transmitted / received outside.

  In this configuration, the authenticated communication terminal 113 cannot be detected by the PHY unit 302 detecting the link state of the communication terminal 313 simultaneously with the authenticated communication terminal presence / absence monitoring process executed in step A1 shown in FIG. And when the communication terminal 313 is link-down, the process after step A3 is performed. In addition, the PHY unit 302 detects the link state of the communication terminal 313 at the same time as the wireless quality monitoring process executed in step A10 shown in FIG. 4, so that the communication terminal 313 is in a link down state when the wireless quality is poor. In this case, the processing after step A3 is executed. In other cases, the processing after step A10 is executed.

  Other configurations, operations, and effects of the second embodiment are the same as those of the first embodiment.

  In the first and second embodiments described above, each unit such as the wireless control unit 136 and the main control units 133 and 143 are described as separate devices, but the present invention is not limited to this. For example, at least a part of each unit such as the wireless control unit 136 may function as a software component by a control program stored in the memories 133b and 143b of the main control units 133 and 143.

  Moreover, although Embodiment 1 and 2 demonstrated above demonstrated as what performs power saving control with respect to the PON control part 135, about power saving control, it is not restricted to this. For example, power saving control can be performed by reducing the operating frequency of the CPU 143a. If the CPU 143a has a power saving operation mode for reducing power consumption, the CPU 143a can be shifted to the power saving operation mode.

  The present invention can also be paraphrased as follows. The present invention is characterized by providing a power saving control method in an ONU having a wireless LAN function. The present invention provides an ONU and a power saving control program that have a wireless LAN and perform power saving control in accordance with the authentication status of a communication terminal using the wireless LAN and the wireless LAN line quality. That is: An optical network subscriber apparatus and a power saving control program for performing power saving control according to a communication terminal authentication status using a wireless LAN. 2. An optical network subscriber unit and a power saving control program for performing power saving control according to wireless LAN line quality. 3. An optical network subscriber apparatus and a power saving control program for performing power saving control according to a wired LAN usage status in addition to a communication terminal authentication status using a wireless LAN. 4). An optical network subscriber device and a power saving control program for performing power saving control in accordance with a wired LAN usage state in addition to wireless LAN line quality.

  Although the present invention has been described with reference to the above embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention. Further, the present invention includes a combination of some or all of the configurations of the above-described embodiments as appropriate.

  Although a part or all of the above embodiments can be described as the following supplementary notes, the present invention is not limited to the following configurations.

[Supplementary Note 1] A subscriber premises optical line termination device provided between a telecommunications carrier side optical line termination device and a communication terminal and having a function of setting itself to a power saving mode,
Communication terminal detecting means for detecting the authenticated communication terminal;
Communication quality judging means for judging whether or not the communication quality of the communication terminal detected by the communication terminal detecting means is good;
When the communication terminal is not detected by the communication terminal detection unit or when the communication quality determination unit determines that the communication quality is not good, the mode is set to the power saving mode when the state continues for a predetermined time or more. Power saving mode setting means;
A subscriber premises optical line terminating device comprising:

[Appendix 2] When the communication terminal is detected by the communication terminal detection unit and the communication quality determination unit determines that the communication quality is good after the power saving mode setting unit sets the power saving mode. The power saving mode canceling means for canceling the power saving mode when the state continues for a certain time or more,
The subscriber premises optical line termination device according to appendix 1, further provided.

[Appendix 3] The communication terminals include a wireless communication terminal that performs wireless communication and a wired communication terminal that performs wired communication.
The subscriber premises optical line termination device according to appendix 1 or 2.

[Supplementary Note 4] When a plurality of the communication terminals are detected by the communication terminal detection unit, the power saving mode setting unit performs the communication quality determination unit on the communication quality detection unit for all the communication terminals detected by the communication terminal detection unit. When it is determined that the communication quality is not good, if the state continues for the predetermined time or more, the power saving mode is set.
The subscriber premises optical line terminator according to any one of appendices 1 to 3.

[Supplementary Note 5] When the communication terminal detection unit detects a plurality of the communication terminals, the power saving mode release unit uses the communication quality determination unit for at least one of the communication terminals detected by the communication terminal detection unit. When it is determined that the communication quality is good, the power saving mode is canceled if the state continues for the predetermined time or longer.
A subscriber-side optical line terminating device according to appendix 2 or 3.

[Supplementary Note 6] A power-saving control method used for a subscriber-side optical line terminator provided between a communication carrier-side optical line terminator and a communication terminal and having a function of setting itself to a power-saving mode. And
A communication terminal detection step of detecting the authenticated communication terminal;
A communication quality determination step for determining whether or not the communication quality of the communication terminal detected in the communication terminal detection step is good;
When the communication terminal is not detected in the communication terminal detection step or when the communication quality is determined not good in the communication quality determination step, the power saving mode is set if the state continues for a certain time or more. A power saving mode setting step;
A power saving control method comprising:

[Appendix 7] When the communication terminal is detected in the communication terminal detection step and the communication quality is determined good in the communication quality determination step after the power saving mode is set in the power saving mode setting step. , A power saving mode canceling step for canceling the power saving mode when the state continues for a certain time or more,
The power saving control method according to appendix 6, further including:

[Appendix 8] Provided between the communication carrier side optical line terminator and the communication terminal, and has a function of setting itself to the power saving mode, and is used for the customer premises optical line terminator including a computer. A power saving control program,
Communication terminal detecting means for detecting the authenticated communication terminal;
Communication quality judging means for judging whether or not the communication quality of the communication terminal detected by the communication terminal detecting means is good;
When the communication terminal is not detected by the communication terminal detection unit or when the communication quality determination unit determines that the communication quality is not good, the mode is set to the power saving mode when the state continues for a predetermined time or more. Power saving mode setting means;
A power saving control program for causing the computer to function.

[Supplementary Note 9] When the communication terminal is detected by the communication terminal detection unit and the communication quality determination unit determines that the communication quality is good after the power saving mode setting unit sets the power saving mode. The power saving mode canceling means for canceling the power saving mode when the state continues for a certain time or more,
Furthermore, the power-saving control program of Claim 8 for making the said computer function.

DESCRIPTION OF SYMBOLS 11 Communication terminal detection means 12 Communication quality judgment means 13 Power saving mode setting means 14 Power saving mode cancellation means 100 Optical communication system 101 Optical fiber network 102 OLT
103 ONU
104 Wired LAN
105 Communication Terminal 110 Optical Communication System 111 Wireless LAN Adapter 112 Wireless LAN
113 Communication terminal 120 Optical communication system 121 ONU
130 Optical Communication System 131 ONU
133 Main control unit 133a CPU
133b Memory 134 Optical transmission / reception unit 135 PON control unit 136 Radio control unit 137 RF / IF unit 138 Radio antenna 140 Optical communication system 141 ONU
143 Main control unit 143a CPU
143b Memory 301 Wired control unit 302 PHY unit 312 Wired LAN
313 Communication terminal

Claims (6)

A subscriber premises optical line terminator provided between a telecommunications carrier side optical line terminator and a plurality of communication terminals and having a function of setting itself to a power saving mode,
Communication terminal detecting means for detecting the authenticated communication terminal;
Communication quality judging means for judging whether or not the communication quality of the communication terminal detected by the communication terminal detecting means is good;
When the communication terminal is not detected by the communication terminal detection unit or when the communication quality determination unit determines that the communication quality is not good, the mode is set to the power saving mode when the state continues for a predetermined time or more. Power saving mode setting means;
After the power saving mode is set by the power saving mode setting means, the communication terminal detecting means detects the communication terminal and the communication quality judging means determines that the communication quality is good. A power saving mode canceling means for canceling the power saving mode when the power continues for a certain period of time,
With
When the communication terminal detection unit detects a plurality of the communication terminals, the power saving mode setting unit improves the communication quality by the communication quality determination unit for all the communication terminals detected by the communication terminal detection unit. When it is determined that there is no such state, the power saving mode is set if the state continues for the predetermined time or more.
When the communication terminal detecting unit detects a plurality of communication terminals, the power saving mode canceling unit determines the communication quality by the communication quality determining unit for at least one of the communication terminals detected by the communication terminal detecting unit. When it is determined to be good, the power saving mode is canceled if the state continues for the predetermined time or longer.
A subscriber premises optical line terminating device. The plurality of communication terminals include a wireless communication terminal that performs wireless communication and a wired communication terminal that performs wired communication.
2. The subscriber premises optical line terminator according to claim 1 . A power-saving control method used for a subscriber-side optical line terminator provided between a communication carrier-side optical line terminator and a plurality of communication terminals and having a function of setting itself to a power-saving mode,
A communication terminal detection step of detecting the authenticated communication terminal;
A communication quality determination step for determining whether or not the communication quality of the communication terminal detected in the communication terminal detection step is good;
When the communication terminal is not detected in the communication terminal detection step or when the communication quality is determined not good in the communication quality determination step, the power saving mode is set if the state continues for a certain time or more. A power saving mode setting step;
After the power saving mode is set in the power saving mode setting step, when the communication terminal is detected in the communication terminal detecting step and the communication quality is determined to be good in the communication quality determining step, the state A power saving mode canceling step for canceling the power saving mode when the power consumption continues for a certain period of time,
Including
In the power saving mode setting step, when a plurality of the communication terminals are detected in the communication terminal detection step, the communication quality is improved in the communication quality determination step for all the communication terminals detected in the communication terminal detection step. When it is determined that there is no such state, the power saving mode is set if the state continues for the predetermined time or more.
In the power saving mode cancellation step, when a plurality of communication terminals are detected in the communication terminal detection step, the communication quality is determined in the communication quality determination step for at least one of the communication terminals detected in the communication terminal detection step. When it is determined to be good, the power saving mode is canceled if the state continues for the predetermined time or longer.
A power saving control method characterized by the above.   The plurality of communication terminals include a wireless communication terminal that performs wireless communication and a wired communication terminal that performs wired communication.
  The power saving control method according to claim 3. Power saving that is provided between a communication carrier side optical line termination device and a plurality of communication terminals, has a function of setting itself to a power saving mode, and is used in a customer premises optical line termination device equipped with a computer. A control program,
Communication terminal detecting means for detecting the authenticated communication terminal;
Communication quality judging means for judging whether or not the communication quality of the communication terminal detected by the communication terminal detecting means is good;
When the communication terminal is not detected by the communication terminal detection unit or when the communication quality determination unit determines that the communication quality is not good, the mode is set to the power saving mode when the state continues for a predetermined time or more. Power saving mode setting means;
The state when the communication terminal is detected by the communication terminal detection means and the communication quality determination means determines that the communication quality is good after the power saving mode setting means sets the power saving mode. A power saving mode canceling means for canceling the power saving mode when the power consumption continues for a certain period of time,
Is a power saving control program for causing the computer to function,
When the communication terminal detection unit detects a plurality of the communication terminals, the power saving mode setting unit improves the communication quality by the communication quality determination unit for all the communication terminals detected by the communication terminal detection unit. When it is determined that there is no such state, the power saving mode is set if the state continues for the predetermined time or more.
When the communication terminal detecting unit detects a plurality of communication terminals, the power saving mode canceling unit determines the communication quality by the communication quality determining unit for at least one of the communication terminals detected by the communication terminal detecting unit. When it is determined to be good, the power saving mode is canceled if the state continues for the predetermined time or longer.
A power saving control program characterized by that .   The plurality of communication terminals include a wireless communication terminal that performs wireless communication and a wired communication terminal that performs wired communication.
  The power saving control program according to claim 5.

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