JP5876954B1 - Terminal station apparatus and terminal station receiving method - Google Patents

Abstract

The present invention provides a transmission / reception function unit that accommodates a passive optical communication network, and includes the same functional unit, so that the more the terminal device accommodates more passive optical communication networks, the more passive An object is to solve the problem that the number of transmission / reception function units corresponding to the optical communication network increases, the number of functions increases unnecessarily by the number of transmission / reception function units, and the cost of the terminal equipment increases. A terminal device 91 according to the present embodiment includes an optical reception unit 111, a decoding unit 112, a distribution unit 114, and an uplink transmission timing control unit 115 for each passive optical communication network. In addition, the terminal device 91 according to the present embodiment includes the multiplexing units 121, 122, and 123, the concentrated uplink transmission timing control unit 125, the control signal processing unit 13, which are shared by all passive optical communication networks, Is provided. [Selection] Figure 2

Description

  The present invention relates to a terminal station apparatus and a terminal station apparatus reception method.

  In a passive optical communication network in which a terminal station device and a plurality of subscriber line terminators are connected, communication between the terminal station device and the subscriber line terminator is time division multiplexed. Communication between a terminal station device and a subscriber line terminal device is realized using a control protocol called MPCP (Multi-Point Control Protocol) as described in Non-Patent Document 1, for example. Such a passive optical communication network can provide a service at low cost since one terminal device is shared by a plurality of users.

  In addition, a single terminal device accommodates a plurality of passive optical communication networks, and further a concentration function unit is provided in the terminal device to allocate bandwidth to subscriber line termination devices accommodated in the plurality of passive optical communication networks. By performing the collective function in the terminal station device in a lump, it is possible to reduce the number of connection ports on the core network side, simplify wiring and consolidate the control units, and further reduce costs.

  As a terminal station apparatus having a collective band allocation function for all subscriber line termination apparatuses accommodated in a plurality of passive optical communication networks, for example, a terminal station apparatus as shown in FIG. 1 includes a transmission / reception function unit 11 of # 1 to #m and a line concentration function unit 12.

  The functional blocks that the transmission / reception function unit 11 has will be described. The transmission / reception function units 11 of # 1 to #m include an optical reception unit 111, a decoding unit 112, a distribution unit 114, an uplink transmission timing control unit 115, and a control signal processing unit 113, respectively. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to #m into electric signals and transferring them to the decoding unit 112. The decoding unit 112 has a function of decoding the encoded input signal and transferring it to the distribution unit 114.

  The distribution unit 114 has a function of transferring the data signal SD in the input signal to the multiplexing unit 121 of the concentrating function unit 12, a function of transferring the MPCP Report signal RM to the uplink transmission timing control unit 115 of each transmission / reception function unit 11, A function of transferring a non-data signal (hereinafter referred to as a control signal SC) other than MPCP Report to the control signal processing unit 113. As the control signal SC, a Register Request signal or an OAM (Operations, Administrations, and Maintenance) signal transmitted from the subscriber line termination device 92 at the time of new registration of the subscriber line termination device 92 is assumed, but other non-data signals are assumed. It doesn't matter.

  The uplink transmission timing control unit 115 provided in each of the transmission / reception function units 11 of # 1 to #m and the function of transferring the MPCP Report signal RM to the multiplexing unit 122 of the line concentration function unit 12 and the line uplink transmission timing of the line concentration function unit 12 A function of allocating the transmission permission amount and the transmission start time allocated from the control unit 125 to the own transmission / reception function unit 11 to the subscriber line terminating device 92 accommodated by the own transmission / reception function unit 11. Bandwidth allocation to the subscriber line termination device 92 includes a method of determining and allocating a transmission permission amount according to a ratio of transmission request amounts from the subscriber line termination device 92, but other methods may be used. I do not care. The control signal processing unit 113 has a function of processing the received control signal.

  A functional block included in the line concentrator 12 will be described. The line concentrating function unit 12 includes a multiplexing unit 121, a multiplexing unit 122, and a line concentration uplink transmission timing control unit 125. The multiplexing unit 121 has a buffer function for temporarily holding signals received from a plurality of ports, and a function for temporally multiplexing the signals stored in the buffers and transferring the signals to a higher-level communication network. The multiplexing unit 122 has a buffer function for temporarily holding signals received from a plurality of ports, and a function for temporally multiplexing signals stored in the buffer and transferring the multiplexed signals to the concentrated uplink transmission timing control unit 125. .

  The concentric uplink transmission timing control unit 125 has a function of allocating a bandwidth to the transmission / reception function unit 11 and a transmission permission amount allocated to the transmission / reception function unit 11 to the uplink transmission timing control unit 115 of the transmission / reception function unit 11 And a function of notifying the transmission start time. As an example of bandwidth allocation, the transmission permission amount is determined according to the ratio of the total amount of transmission requests from the subscriber line terminators 92 accommodated in its own transmission / reception function unit 11, and the transmission delay of each subscriber line terminator 92 is determined. In addition, there is a method of assigning the transmission start time and the transmission duration so that the signals from the subscriber line termination devices 92 do not collide based on the transmission permission amount, but other methods may be used.

  Here, the concentric uplink transmission timing control unit 125 assigns a transmission permission amount and a transmission start time to the transmission / reception function unit 11, and based on this, the uplink transmission timing control unit 115 of its own transmission / reception function unit 11 The band allocation method has been introduced in which a transmission permission amount and a transmission start time are further allocated to the subscriber line termination device 92 accommodated by the own transmission / reception function unit 11, but other methods may be used. For example, a method may be considered in which the concentric uplink transmission timing control unit 125 assigns a transmission permission amount and a transmission start time to all the subscriber line termination devices 92 accommodated in the plurality of transmission / reception function units 11 in a lump. It is done.

IEEE Std. 802.3-2012

  The present invention has the same functional unit for each transmission / reception functional unit that accommodates a passive optical communication network. Therefore, the more the terminal device accommodates more passive optical communication networks, the larger the passive optical communication network that accommodates the passive optical communication network. An object of the present invention is to solve the problem that the number of transmission / reception function units corresponding to the number increases, the number of functions increases unnecessarily by the number of transmission / reception function units, and the cost of the terminal equipment increases.

  In order to solve the above-described problems, the present invention shares some functions of a plurality of transmission / reception function units included in the terminal device between the transmission / reception function units.

The terminal device according to the present invention is
A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A plurality of decoding units for decoding each signal received by the plurality of optical receiving units for each received signal of the optical receiving unit;
Each of the signals decoded by the decoding unit is divided into the transmission data, information about the transmission data, and a control signal for controlling the subscriber line termination device for each received signal of the optical receiving unit A distribution section;
A multiplexing unit that multiplexes the transmission data output from the distribution unit and transfers the multiplexed data to an upper communication network;
Uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiving unit based on information on the transmission data included in the received signals of the plurality of optical receiving units output from the distributing unit A concentric upstream transmission timing control unit that is assigned to each optical receiving unit,
An uplink transmission timing control unit that assigns the uplink transmission timing assigned from the concentric uplink transmission timing control unit to the subscriber line termination device accommodated in the optical reception unit, for each optical reception unit;
Based on the control signal output from the distribution unit, a control signal processing unit that executes control for the subscriber line termination device accommodated in the plurality of optical receiving units;
Is provided.

The terminal device according to the present invention is
A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A plurality of decoding units for decoding each signal received by the plurality of optical receiving units for each received signal of the optical receiving unit;
A plurality of sorting units that separate each signal decoded by the decoding unit into information about the transmission data and the transmission data for each reception signal of the optical reception unit;
A multiplexing unit that multiplexes the transmission data output from the distribution unit and transfers the multiplexed data to an upper communication network;
Based on the information related to the transmission data output from the distribution unit, the uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiver is assigned to each subscriber line termination device. A transmission timing control unit;
Is provided.

  In the terminal device according to the present invention, the distribution unit further converts each signal decoded by the decoding unit into a control signal for controlling the subscriber line terminating device, for each received signal of the optical receiving unit. A control signal processing unit may be further provided that performs control on the subscriber line terminating device accommodated in the plurality of optical reception units based on the control signal that is separated and output from the distribution unit.

The terminal device according to the present invention is
A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A plurality of decoding units for decoding each signal received by the plurality of optical receiving units for each received signal of the optical receiving unit;
A decoded signal multiplexing unit that multiplexes signals output from the plurality of decoding units;
The signal multiplexed by the decoded signal multiplexing unit is separated into the transmission data, information related to the transmission data, and a control signal for controlling the subscriber line termination device, and the transmission data is transferred to a higher-level communication network. A sorting section to perform,
Based on the information related to the transmission data output from the distribution unit, the uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiver is assigned to each subscriber line termination device. A transmission timing control unit;
Based on the control signal output from the distribution unit, a control signal processing unit that executes control for the subscriber line termination device accommodated in the plurality of optical receiving units;
Is provided.

In the terminal device according to the present invention,
A second optical receiver for receiving a signal transmitted from the subscriber line termination device;
A second decoding unit that decodes each signal received by the second optical receiving unit for each received signal of the second optical receiving unit;
A second distribution unit that separates the signal decoded by the second decoding unit into the transmission data, information about the transmission data, and the control signal;
A data signal multiplexing unit that multiplexes the transmission data output from the distribution unit and the second distribution unit and transfers the multiplexed data to a higher-level communication network;
Further comprising
The control signal processing unit includes the subscriber line termination device and the second light accommodated in the plurality of optical reception units based on the control signals output from the distribution unit and the second distribution unit. Performing control on the subscriber line termination device accommodated in the receiving unit;
The uplink transmission timing control unit is configured such that the subscriber line terminating device is a receiving destination optical receiving unit or the second receiving unit based on information on the transmission data output from the distributing unit and the second distributing unit. Uplink transmission timing for transmitting a signal to the optical receiver may be assigned to each subscriber line termination device.

The terminal device according to the present invention is
A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A received signal multiplexer for multiplexing each signal received by the plurality of optical receivers;
A decoding unit for decoding the signal output from the received signal multiplexing unit;
Distributing the signal decoded by the decoding unit into the transmission data, information about the transmission data, and a control signal for controlling the subscriber line termination device, and transferring the transmission data to a higher-level communication network And
Based on the information related to the transmission data output from the distribution unit, the uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiver is assigned to each subscriber line termination device. A transmission timing control unit;
Based on the control signal output from the distribution unit, a control signal processing unit that executes control for the subscriber line termination device accommodated in the plurality of optical receiving units;
Is provided.

In the terminal device according to the present invention,
A second optical receiver for receiving a signal transmitted from the subscriber line termination device;
A second decoding unit that decodes each signal received by the second optical receiving unit for each received signal of the second optical receiving unit;
A decoded signal multiplexing unit that multiplexes output signals of the decoding unit and the second decoding unit and outputs the multiplexed signals to the distribution unit;
May be further provided.

The reception method of the terminal device according to the present invention is as follows:
A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
An optical reception procedure in which the plurality of optical reception units receive a signal transmitted from the subscriber line termination device;
A decoding procedure in which a plurality of decoding units provided for each of the optical receiving units decodes a signal received by the optical receiving unit;
A plurality of sorting units provided for each optical receiving unit separates the signal decoded by the decoding unit into the transmission data, information on the transmission data, and a control signal for controlling the subscriber line termination device Distribution procedure,
A multiplexing unit provided in common to the plurality of optical receiving units, a multiplexing procedure for multiplexing the transmission data output from the plurality of distributing units and transferring the multiplexed data to an upper communication network,
A concentric upstream transmission timing control unit provided in common to the plurality of optical reception units is configured to receive the optical reception of the subscriber line termination device based on the information on the transmission data output from the plurality of distribution units. Uplink transmission timing for transmitting a signal to each of the optical reception units is assigned to each of the optical reception units, and a plurality of uplink transmission timing control units provided for each of the optical reception units is assigned to the uplink transmission timing from the concentrated uplink transmission timing control unit An uplink transmission timing control procedure for allocating to the subscriber line termination device accommodated in the optical receiver,
A control signal processing unit provided in common to the plurality of optical reception units controls the subscriber line termination device accommodated in the plurality of optical reception units based on the control signals output from the plurality of distribution units. A control signal processing procedure for executing
Execute.

The reception method of the terminal device according to the present invention is as follows:
A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving a signal transmitted from the subscriber line terminating device; and
A decoding procedure in which a plurality of decoding units provided for each of the optical receiving units decodes a signal received by the optical receiving unit;
A plurality of distribution units provided for each of the optical reception units, a distribution procedure for separating the signal decoded by the decoding unit into information related to the transmission data and the transmission data;
A multiplexing unit provided in common to the plurality of optical receiving units, a multiplexing procedure for multiplexing the transmission data transferred from the plurality of distributing units and transferring the multiplexed data to an upper communication network,
The uplink transmission timing control unit provided in common to the plurality of optical reception units is configured to allow the subscriber line termination device to be in the optical reception unit of the accommodation destination based on the information on the transmission data output from the plurality of distribution units. An uplink transmission timing control procedure for assigning an uplink transmission timing for transmitting a signal to each of the subscriber line termination devices;
Execute.

  The above inventions can be combined as much as possible.

  The present invention shares a part of the functions of a plurality of transmission / reception function units included in the terminal station device between the transmission / reception function units. Therefore, the more the terminal station device accommodates more passive optical communication networks, the more passive light is accommodated. It is possible to solve the problem that the number of transmission / reception function units corresponding to the communication network increases, the number of functions increases unnecessarily by the number of transmission / reception function units, and the cost of the terminal device increases.

An example of the structure of the terminal device which comprises the collective band allocation with respect to all the subscriber line termination | terminus apparatuses accommodated in the several passive optical communication network is shown. 1 shows an example of a configuration of a terminal device according to a first embodiment. An example of the structure of the terminal station apparatus which concerns on Embodiment 2 is shown. An example of the structure of the terminal station apparatus which concerns on Embodiment 3 is shown. An example of the structure of the terminal device which concerns on Embodiment 4 is shown. An example of the structure of the terminal station apparatus which concerns on Embodiment 5 is shown. An example of the structure of the terminal device which concerns on Embodiment 6 is shown. An example of the structure of the terminal station apparatus which concerns on Embodiment 7 is shown. An example of the structure of the terminal device which concerns on Embodiment 8 is shown.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to embodiment shown below. These embodiments are merely examples, and the present invention can be implemented in various modifications and improvements based on the knowledge of those skilled in the art. In the present specification and drawings, the same reference numerals denote the same components.

  In the invention according to the present embodiment, when the control signal SC from the plurality of transmission / reception function units 11 is processed by the line concentration function unit 12, the control signal SC is transmitted from the transmission / reception function unit 11 to which the subscriber line termination device 92 belongs. Implement a function to determine whether it is a signal. Thereby, the invention according to the present embodiment makes it possible to concentrate the functions of the control signal processing unit 113 and the uplink transmission timing control unit 115 in each transmission / reception function unit 11 in the terminal station device 91, and to have a simpler structure. Realize.

(Embodiment 1)
The first embodiment will be described with reference to FIG. The terminal device 91 according to the present embodiment is an example in which the control signal processing unit 13 is shared by all passive optical communication networks. FIG. 2 shows an example in which passive optical communication networks # 1, # m1, # m2, and # m3 are connected to the terminal device 91 as an example.

  Specifically, the terminal device 91 according to the present embodiment includes an optical reception unit 111, a decoding unit 112, a distribution unit 114, and an uplink transmission timing control unit 115 for each passive optical communication network. In addition, the terminal device 91 according to the present embodiment includes the multiplexing units 121, 122, and 123, the concentrated uplink transmission timing control unit 125, the control signal processing unit 13, which are shared by all passive optical communication networks, Is provided. The multiplexing unit 121 functions as a data signal multiplexing unit, the multiplexing unit 122 functions as an MPCP Report signal multiplexing unit, and the multiplexing unit 123 functions as a control signal multiplexing unit.

  The reception method of the terminal device 91 according to the present embodiment is such that the terminal device 91 includes at least an optical reception procedure, a decoding procedure, a distribution procedure, a data signal multiplexing procedure, an uplink transmission timing control procedure, and a control signal processing procedure. One of the procedures is executed in order. A plurality of optical reception units 111 execute an optical reception procedure, a plurality of decoding units 112 execute a decoding procedure, a plurality of distribution units 114 execute a distribution procedure, a multiplexing unit 121 executes a data signal multiplexing procedure, Concentration uplink transmission timing control section 125 and uplink transmission timing control section 115 execute an uplink transmission timing control procedure, and control signal processing section 13 executes a control signal processing procedure.

  Each functional block will be described. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to # m3 into electric signals and transferring them to the decoding unit 112. The decoding unit 112 has a function of decoding the encoded input signal and transferring it to the distribution unit 114. The distribution unit 114 has a function of transferring the data signal SD in the input signal to the multiplexing unit 121, a function of transferring the MPCP Report signal RM to the uplink transmission timing control unit 125, and a non-data signal other than MPCP Report (hereinafter referred to as control). And a function of transferring the signal SC) to the multiplexing unit 123.

  The data signal SD is transmission data of the subscriber line termination device 92. The MPCP Report signal RM is information relating to transmission data used when assigning the uplink transmission timing of the subscriber line terminating device 92. The control signal SC is a control signal for controlling the subscriber line termination device 92. As the control signal SC, a Register Request signal or an OAM (Operations, Administrations, and Maintenance) signal transmitted from the subscriber line termination device 92 at the time of new registration of the subscriber line termination device 92 is assumed, but other non-data signals are assumed. It doesn't matter.

  The uplink transmission timing control unit 115 has a function of transferring the MPCP Report signal RM to the multiplexing unit 122, and the transmission permission amount and transmission allocated from the concentrated uplink transmission timing control unit 125 to the passive optical communication networks # 1 to # m3. And a function of assigning the start time to the subscriber line termination device 92 accommodated by the passive optical communication networks # 1 to # m3. As a result, the uplink transmission timing control unit 115 assigns the uplink transmission timing assigned from the concentrated line uplink transmission timing control unit 125 to the subscriber line termination device 92 accommodated in the optical reception unit 111. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used.

  The multiplexing unit 121 has a buffer function that temporarily holds signals SD received from a plurality of ports, and a function that temporally multiplexes the signals SD stored in the buffers and transfers them to the higher-level communication network. The multiplexing unit 122 has a buffer function that temporarily holds signals RM received from a plurality of ports, and a function that temporally multiplexes the signals RM stored in the buffer and transfers the signals to the concentrated uplink transmission timing control unit 125. Have. The multiplexing unit 123 has a buffer function for temporarily holding the signals SC received from a plurality of ports, and a function for temporally multiplexing the signals SC stored in the buffers and transferring them to the control signal processing unit 13.

  The concentric upstream transmission timing control unit 125 includes a function for performing bandwidth allocation to the passive optical communication networks # 1 to # m3 and an upstream transmission timing control unit 115 that accommodates the passive optical communication networks # 1 to # m3. And a function of notifying the transmission permission amount and the transmission start time assigned to the passive optical communication networks # 1 to # m3. As a result, the concentric uplink transmission timing control unit 125 assigns an uplink transmission timing at which the subscriber line terminating apparatus 92 transmits a signal to the receiving optical receiver 111 for each optical receiver 111, and sets the uplink transmission timing to the uplink transmission timing. The transmission timing control unit 115 is notified. As an example of band allocation to the passive optical communication networks # 1 to # m3, the transmission permission amount is determined according to the ratio of the total transmission request amounts from the subscriber line termination devices 92 accommodated by the passive optical communication network, There is a method of assigning a transmission start time and a transmission duration so that signals from each subscriber line terminator 92 do not collide based on the transmission delay and transmission permission amount of each subscriber line terminator 92. The method may be used. The control signal processing unit 13 has a function of processing the received control signal SC.

  Here, the concentric upstream transmission timing control unit 125 assigns a transmission permission amount and a transmission start time to the passive optical communication network, and based on this, the upstream transmission timing control unit 115 accommodates the passive optical communication network. However, although band allocation has been introduced in which the transmission permission amount and the transmission start time are further allocated to the subscriber line termination device 92 accommodated in the passive optical communication network, other methods may be used. For example, a method may be considered in which the concentric upstream transmission timing control unit 125 assigns a transmission permission amount and a transmission start time to all the subscriber line termination devices 92 accommodated in a plurality of passive optical communication networks. It is done.

  In the first embodiment, the multiplexing unit 123 is provided and the control signal processing unit 13 is aggregated, so that the functions required for each passive optical communication network are reduced and the cost of the terminal device 91 is reduced.

(Embodiment 2)
A second embodiment will be described with reference to FIG. The terminal station device 91 according to the present embodiment is an example in which the uplink transmission timing control unit 15 is shared by all passive optical communication networks.

  Specifically, the terminal device 91 according to the present embodiment includes an optical reception unit 111, a decoding unit 112, a distribution unit 114, and a control signal processing unit 113 for each passive optical communication network. Further, the terminal device 91 according to the present embodiment includes multiplexing units 121 and 122 and an uplink transmission timing control unit 15 that are shared by all passive optical communication networks.

  The reception method of the terminal device 91 according to the present embodiment is such that the terminal device 91 includes at least an optical reception procedure, a decoding procedure, a distribution procedure, a data signal multiplexing procedure, an uplink transmission timing control procedure, and a control signal processing procedure. One of the procedures is executed in order. A plurality of optical reception units 111 execute an optical reception procedure, a plurality of decoding units 112 execute a decoding procedure, a plurality of distribution units 114 execute a distribution procedure, a multiplexing unit 121 executes a data signal multiplexing procedure, The uplink transmission timing control unit 15 executes the uplink transmission timing control procedure, and the plurality of control signal processing units 113 execute the control signal processing procedure.

  Each functional block will be described. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to # m3 into electric signals and transferring them to the decoding unit 112. The decoding unit 112 has a function of decoding the encoded input signal and transferring it to the distribution unit 114. The distribution unit 114 has a function of transferring the data signal SD in the input signal to the multiplexing unit 121, a function of transferring the MPCP Report signal RM to the multiplexing unit 122, and a function of transferring other control signals to the control signal processing unit 113. And having. The control signal processing unit 113 has a function of processing the control signal SC.

  The multiplexing unit 121 has a buffer function that temporarily holds data signals SD received from a plurality of ports, and a function that temporally multiplexes the signals SD stored in the buffers and transfers them to the higher-level communication network. The multiplexing unit 122 has a buffer function that temporarily holds signals RM received from a plurality of ports, and a function that temporally multiplexes the signals RM stored in the buffer and transfers the signals to the uplink transmission timing control unit 15.

  The uplink transmission timing control unit 15 has a function of allocating a band to all the subscriber line terminating devices 92 accommodated in the terminal station device 91 based on the received MPCP Report signal RM. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used.

  In the second embodiment, the functions of the uplink transmission timing control unit 115 and the concentrated uplink transmission timing control unit 125 of FIG. The cost of the terminal device 91 can be reduced.

(Embodiment 3)
A third embodiment will be described with reference to FIG. The terminal device 91 according to the present embodiment is an example in which the uplink transmission timing control unit 15 and the control signal processing unit 13 are shared by all passive optical communication networks. The third embodiment differs from the first embodiment in that not only the control signal processing unit 13 but also the uplink transmission timing control unit 15 is shared by all passive optical communication networks.

  Specifically, the terminal device 91 according to the present embodiment includes an optical reception unit 111, a decoding unit 112, and a distribution unit 114 for each passive optical communication network. In addition, the terminal device 91 includes multiplexing units 121, 122, and 123, an uplink transmission timing control unit 15, and a control signal processing unit 13 that are shared by all passive optical communication networks.

  The reception method of the terminal device 91 according to the present embodiment is such that the terminal device 91 includes at least an optical reception procedure, a decoding procedure, a distribution procedure, a data signal multiplexing procedure, an uplink transmission timing control procedure, and a control signal processing procedure. One of the procedures is executed in order. A plurality of optical reception units 111 execute an optical reception procedure, a plurality of decoding units 112 execute a decoding procedure, a plurality of distribution units 114 execute a distribution procedure, a multiplexing unit 121 executes a data signal multiplexing procedure, The uplink transmission timing control unit 15 executes the uplink transmission timing control procedure, and the control signal processing unit 13 executes the control signal processing procedure.

  Each functional block will be described. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to # m3 into electric signals and transferring them to the decoding unit 112. The decoding unit 112 has a function of decoding the encoded input signal and transferring it to the distribution unit 114. The distributing unit 114 has a function of transferring the data signal SD in the input signal to the multiplexing unit 121, a function of transferring the MPCP Report signal RM to the multiplexing unit 122, and a function of transferring other control signals SC to the multiplexing unit 123. Have.

  The multiplexing unit 121 has a buffer function that temporarily holds signals SD received from a plurality of ports, and a function that temporally multiplexes the signals SD stored in the buffers and transfers them to the higher-level communication network. The multiplexing unit 122 has a buffer function that temporarily holds signals RM received from a plurality of ports, and a function that temporally multiplexes the signals RM stored in the buffer and transfers the signals to the uplink transmission timing control unit 15. The multiplexing unit 123 has a buffer function for temporarily holding the signals SC received from a plurality of ports, and a function for temporally multiplexing the signals SC stored in the buffers and transferring them to the control signal processing unit 13.

  The uplink transmission timing control unit 15 has a function of allocating a band to all the subscriber line terminating devices 92 accommodated in the terminal station device 91 based on the received MPCP Report signal RM. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used. The control signal processing unit 13 has a function of processing the control signal SC.

  In the third embodiment, the functions of the uplink transmission timing control unit 115 and the concentric uplink transmission timing control unit 125 in FIG. 1 are integrated into the uplink transmission timing control unit 15 in FIG. 3, and a multiplexing unit 123 is further provided to control signal processing. By consolidating the unit 113 into the control signal processing unit 13, functions required for each passive optical communication network are reduced, and the cost of the terminal device 91 is reduced.

  The third embodiment differs from the first embodiment in that not only the control signal processing unit 13 but also the uplink transmission timing control unit 15 is shared by all passive optical communication networks. Therefore, Embodiment 3 can reduce the functions required for each passive optical communication network from Embodiment 1.

(Embodiment 4)
A fourth embodiment will be described with reference to FIG. The terminal device 91 according to the present embodiment is an example in which the uplink signal transmission timing control unit 15, the control signal processing unit 13, and the distribution unit 14 are shared by all passive optical communication networks. The fourth embodiment differs from the third embodiment in that not only the uplink transmission timing control unit 15 and the control signal processing unit 13 but also the distribution unit 14 is shared by all passive optical communication networks.

  Specifically, the terminal device 91 according to the present embodiment includes an optical receiving unit 111 and a decoding unit 112 for each passive optical communication network. Also, the terminal device 91 according to the present embodiment includes a multiplexing unit 16, a distribution unit 14, an uplink transmission timing control unit 15, and a control signal processing unit 13 that are shared by all passive optical communication networks. . The multiplexing unit 16 functions as a decoded signal multiplexing unit.

  The reception method of the terminal device 91 according to the present embodiment is such that the terminal device 91 has an optical reception procedure, a decoding procedure, a decoded signal multiplexing procedure, a distribution procedure, a data signal multiplexing procedure, an uplink transmission timing control procedure, At least one of the control signal processing procedures is sequentially executed. A plurality of optical receivers 111 execute an optical reception procedure, a plurality of decoding units 112 execute a decoding procedure, a multiplexing unit 16 executes a decoded signal multiplexing procedure, a distribution unit 14 executes a distribution procedure, and a distribution unit 14 executes the data signal multiplexing procedure, the uplink transmission timing control unit 15 executes the uplink transmission timing control procedure, and the control signal processing unit 13 executes the control signal processing procedure.

  Each functional block will be described. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to # m3 into electric signals and transferring them to the decoding unit 112. The decoding unit 112 has a function of decoding the encoded input signal and transferring it to the multiplexing unit 16. The multiplexing unit 16 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes signals stored in the buffer and transfers the signals to the distribution unit 14. The distributing unit 14 has a function of transferring the data signal SD in the input signal to the higher-level communication network, a function of transferring the MPCP Report signal RM to the uplink transmission timing control unit 15, and the other control signal SC as the control signal processing unit 13. And a function of transferring to.

  Based on the received MPCP Report signal RM, the uplink transmission timing control unit 15 performs band allocation for all the subscriber line termination devices 92 accommodated in the terminal station device 91. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used. The control signal processing unit 13 has a function of processing the received control signal SC.

  In the fourth embodiment, the multiplexing unit 16 is provided between the decoding unit 112 and the distribution unit 14, so that the uplink transmission timing control unit 15, the control signal processing unit 13, and the distribution unit 14 are shared by all passive optical communication networks. Thereby, Embodiment 4 reduces a function required for every passive optical communication network, and implement | achieves the cost reduction of the terminal device 91. FIG.

  The fourth embodiment differs from the third embodiment in that not only the uplink transmission timing control unit 15 and the control signal processing unit 13 but also the distribution unit 14 is shared by all passive optical communication networks. Therefore, Embodiment 4 can reduce the function required for each passive optical communication network from Embodiment 3.

(Embodiment 5)
The fifth embodiment will be described with reference to FIG. The terminal device 91 according to the present embodiment is an example in which the uplink transmission timing control unit 15 and the control signal processing unit 13 are shared by all passive optical communication networks, and the distribution unit 14 is shared by some passive optical communication networks. It is. The fifth embodiment is different from the fourth embodiment in that one distribution unit 14 does not accommodate all passive optical communication networks but only a part of the passive optical communication networks.

  Specifically, the terminal device 91 according to the present embodiment includes an optical receiving unit 111 and a decoding unit 112 for each passive optical communication network. Also, the terminal device 91 according to the present embodiment includes multiplexing units 121, 122, and 123, an uplink transmission timing control unit 15, and a control signal processing unit 13 that are shared by all passive optical communication networks. The terminal device 91 according to the present embodiment includes a distribution unit 14 shared by the passive optical communication networks # 1 and # m1, and a distribution unit 114 provided for each of the passive optical communication networks # m2 to # m3. The optical receiving unit 111 provided for each of the passive optical communication networks # m2 to # m3 functions as a second optical receiving unit, and the decoding unit 112 provided for each of the passive optical communication networks # m2 to # m3 functions as a second decoding unit. The distribution unit 114 provided for each of the passive optical communication networks # m2 to # m3 functions as a second distribution unit.

  Here, like the distribution unit 14 of the terminal device 91 in FIG. 6, the distribution unit 14 that accommodates a plurality of passive optical communication networks is particularly referred to as a “multiple accommodation distribution unit”. 6 shows a configuration including one distribution unit 14 that functions as a plurality of storage distribution units and a distribution unit 114 that stores the passive optical communication networks # m2 and # m3 one by one. You may be the structure of. For example, there may be two or more multiple distribution units, or all distribution units may be multiple distribution units.

  The reception method of the terminal device 91 according to the present embodiment is such that the terminal device 91 has an optical reception procedure, a decoding procedure, a decoded signal multiplexing procedure, a distribution procedure, a data signal multiplexing procedure, an uplink transmission timing control procedure, At least one of the control signal processing procedures is sequentially executed. A plurality of optical reception units 111 execute an optical reception procedure, a plurality of decoding units 112 execute a decoding procedure, a multiplexing unit 16 executes a decoded signal multiplexing procedure, and distribution units 14 and 114 execute a distribution procedure, The multiplexing unit 121 executes the data signal multiplexing procedure, the uplink transmission timing control unit 15 executes the uplink transmission timing control procedure, and the control signal processing unit 13 executes the control signal processing procedure.

  Each functional block will be described. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to # m3 into electric signals and transferring them to the decoding unit 112. The decoding units 112 of # 1 and # m1 have a function of decoding the encoded input signal and transferring it to the multiplexing unit 16. The decoding units 112 of # m2 and # m3 have a function of decoding the encoded input signal and transferring it to the distribution unit 114.

  The multiplexing unit 16 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes signals stored in the buffer and transfers the signals to the distribution unit 14. The distributing units 14 and 114 transfer the data signal SD in the input signal to the multiplexing unit 121, transfer the MPCP Report signal RM to the multiplexing unit 122, and transfer other control signals SC to the multiplexing unit 123. And having a function.

  The multiplexing unit 121 has a buffer function for temporarily holding signals received from a plurality of ports, and a function for temporally multiplexing the signals stored in the buffers and transferring the signals to a higher-level communication network. The multiplexing unit 122 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes the signals stored in the buffer and transfers the signals to the uplink transmission timing control unit 15. The multiplexing unit 123 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes signals stored in the buffer and transfers the signals to the control signal processing unit 13.

  The uplink transmission timing control unit 15 has a function of allocating a band to all the subscriber line terminating devices 92 accommodated in the terminal station device 91 based on the received MPCP Report signal RM. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used. The control signal processing unit 13 has a function of processing the received control signal.

  In the fifth embodiment, the multiplexing unit 16 is provided between the decoding unit 112 and the distribution unit 14, whereby the uplink transmission timing control unit 15 and the control signal processing unit 13 are shared by all passive optical communication networks, and the distribution unit 14 is further configured. Is shared by some passive optical networks. Thereby, Embodiment 5 reduces the function required for each passive optical communication network, and realizes cost reduction of the terminal device 91.

  The fifth embodiment is different from the fourth embodiment in that one distribution unit 14 does not accommodate all passive optical communication networks but only a part of the passive optical communication networks. Therefore, in the fifth embodiment, since the load of the distribution unit 14 is distributed, the processing capability of the terminal device 91 can be increased as compared with the fourth embodiment.

(Embodiment 6)
The sixth embodiment will be described with reference to FIG. The terminal device 91 according to the present embodiment is an example in which the uplink transmission timing control unit 15, the control signal processing unit 13, the distribution unit 14, and the decoding unit 17 are shared by all passive optical communication networks. The difference between the sixth embodiment and the fourth embodiment is that all passive optical communication networks share not only the uplink transmission timing control unit 15, the control signal processing unit 13, and the distribution unit 14, but also the decoding unit 17.

  Specifically, the terminal device 91 according to the present embodiment includes an optical receiving unit 111 for each passive optical communication network. Also, the terminal device 91 according to the present embodiment includes a multiplexing unit 18, a decoding unit 17, a distribution unit 14, an uplink transmission timing control unit 15, and a control signal processing unit that are shared by all passive optical communication networks. 13. The multiplexing unit 18 functions as a reception signal multiplexing unit.

  The reception method of the terminal station apparatus 91 according to the present embodiment is that the terminal station apparatus 91 has an optical reception procedure, a reception signal multiplexing procedure, a decoding procedure, a distribution procedure, a data signal multiplexing procedure, an uplink transmission timing control procedure, At least one of the control signal processing procedures is sequentially executed. The plurality of optical receivers 111 execute the optical reception procedure, the multiplexing unit 18 executes the data signal multiplexing procedure, the decoding unit 17 executes the decoding procedure, the distribution unit 14 executes the distribution procedure, and the distribution unit 14 The data signal multiplexing procedure is executed, the uplink transmission timing control unit 15 executes the uplink transmission timing control procedure, and the control signal processing unit 13 executes the control signal processing procedure.

  Each functional block will be described. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to # m3 into electric signals and transferring them to the multiplexing unit 18. The multiplexing unit 18 has a buffer function for temporarily holding signals received from a plurality of ports, and a function for temporally multiplexing the signals stored in the buffer and transferring the signals to the decoding unit 17. The decoding unit 17 has a function of decoding the encoded input signal and transferring it to the distribution unit 14. The distributing unit 14 has a function of transferring the data signal SD in the input signal to the higher-level communication network, a function of transferring the MPCP Report signal RM to the uplink transmission timing control unit 15, and the other control signal SC as the control signal processing unit 13. And a function of transferring to.

  The uplink transmission timing control unit 15 has a function of allocating a band to all the subscriber line terminating devices 92 accommodated in the terminal station device 91 based on the received MPCP Report signal RM. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used. The control signal processing unit 13 has a function of processing the received control signal SC.

  In the sixth embodiment, by providing the multiplexing unit 18 between the optical receiving unit 111 and the decoding unit 17, the upstream transmission timing control unit 15, the control signal processing unit 13, the distribution unit 14, and the decoding unit 17 are all passive optical communication. Share on the net. Thereby, Embodiment 6 can reduce a function required for every passive optical communication network, and can implement | achieve the cost reduction of the terminal station apparatus 91. FIG.

  The difference between the sixth embodiment and the fourth embodiment is that all passive optical communication networks share not only the uplink transmission timing control unit 15, the control signal processing unit 13, and the distribution unit 14, but also the decoding unit 17. Therefore, Embodiment 6 can reduce the functions required for each passive optical communication network from Embodiment 4.

(Embodiment 7)
The seventh embodiment will be described with reference to FIG. In the terminal device according to the present embodiment, the uplink transmission timing control unit 15, the control signal processing unit 13, and the distribution unit 14 are shared by all passive optical communication networks, and the decoding unit 17 is shared by some passive optical communication networks. This is an example of sharing. The difference between the seventh embodiment and the sixth embodiment is that one decoding unit 17 does not accommodate all passive optical communication networks but only some passive optical communication networks # 1 and # m1. .

  Specifically, the terminal device according to the present embodiment includes an optical receiving unit 111 for each passive optical communication network. Also, the terminal device 91 according to the present embodiment includes a multiplexing unit 16, a distribution unit 14, an uplink transmission timing control unit 15, and a control signal processing unit 13 that are shared by all passive optical communication networks. . Also, the terminal device 91 according to the present embodiment includes a multiplexing unit 18 and a decoding unit 17 shared by the passive optical communication networks # 1 and # m1, and a decoding unit 112 provided for each of the passive optical communication networks # m2 to # m3. . The optical receiving unit 111 provided for each of the passive optical communication networks # m2 to # m3 functions as a second optical receiving unit, and the decoding unit 112 provided for each of the passive optical communication networks # m2 to # m3 functions as a second decoding unit. To do.

  Here, like the decoding unit 17 of the terminal device 91 of FIG. 8, a decoding unit that accommodates a plurality of passive optical communication networks is particularly referred to as a “multiple accommodation decoding unit”. 8 shows a configuration including one decoding unit 17 that functions as a plurality of accommodating decoding units and a decoding unit 112 that accommodates the passive optical communication networks # m2 and # m3 one by one. You may be the structure of. For example, there may be two or more multiple-accommodating decoding units, or all the decoding units may be multiple-accommodating decoding units.

  In the reception method of the terminal device 91 according to the present embodiment, the terminal device 91 includes an optical reception procedure, a reception signal multiplexing procedure, a decoding procedure, a decoded signal multiplexing procedure, a distribution procedure, a data signal multiplexing procedure, At least one of an uplink transmission timing control procedure and a control signal processing procedure is sequentially executed. A plurality of optical receivers 111 execute an optical reception procedure, a multiplexing unit 18 executes a data signal multiplexing procedure, decoding units 17 and 112 execute a decoding procedure, a multiplexing unit 16 executes a decoded signal multiplexing procedure, The distribution unit 14 executes the distribution procedure, the distribution unit 14 executes the data signal multiplexing procedure, the uplink transmission timing control unit 15 executes the uplink transmission timing control procedure, and the control signal processing unit 13 executes the control signal processing procedure To do.

  Each functional block will be described. The optical receiving unit 111 has a function of converting optical signals from the passive optical communication networks # 1 to # m1 into electric signals and transferring them to the multiplexing unit 18. The optical receivers 111 of # m2 to # m3 have a function of converting optical signals from the passive optical communication networks # m2 to # m3 into electric signals and transferring them to the decoder 112. The multiplexing unit 18 has a buffer function for temporarily holding signals received from a plurality of ports, and a function for temporally multiplexing the signals stored in the buffer and transferring the signals to the decoding unit 17. The decoding units 17 and 112 have a function of decoding the encoded input signal and transferring it to the multiplexing unit 16. The multiplexing unit 16 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes signals stored in the buffer and transfers the signals to the distribution unit 14. The distributing unit 14 has a function of transferring the data signal SD in the input signal to the higher-level communication network, a function of transferring the MPCP Report signal RM to the uplink transmission timing control unit 15, and the other control signal SC as the control signal processing unit 13. And a function of transferring to.

  The uplink transmission timing control unit 15 has a function of allocating a band to all the subscriber line terminating devices 92 accommodated in the terminal station device 91 based on the received MPCP Report signal RM. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used. The control signal processing unit 13 has a function of processing the received control signal.

  In the seventh embodiment, a multiplexing unit 18 is provided between the optical receiving unit 111 and the decoding unit 17, and a multiplexing unit 16 is provided between the decoding units 17 and 112 and the distribution unit 14, so that the uplink transmission timing control unit 15 The control signal processing unit 13 and the distribution unit 14 are shared by all passive optical communication networks, and the decoding unit 17 is shared by some passive optical communication networks. Thereby, Embodiment 7 reduces the function required for each passive optical communication network, and realizes cost reduction of the terminal device 91.

  The difference between the seventh embodiment and the sixth embodiment is that one decoding unit 17 does not accommodate all passive optical communication networks but only some passive optical communication networks. Therefore, since the load of many decoding units is distributed in the seventh embodiment, the processing capability of the terminal device 91 can be improved as compared with the sixth embodiment.

(Embodiment 8)
The eighth embodiment will be described with reference to FIG. The terminal device 91 according to the present embodiment shares the uplink transmission timing control unit 15 and the control signal processing unit 13 with all the passive optical communication networks, shares the distribution unit 14 with some passive optical communication networks, In this example, the decoding unit 17 is shared by some passive optical communication networks. The difference between the eighth embodiment and the seventh embodiment is that one distribution unit 14 does not accommodate all passive optical communication networks, but only some passive optical communication networks.

  Specifically, the terminal device 91 according to the present embodiment includes an optical receiving unit 111 for each passive optical communication network. Also, the terminal device 91 according to the present embodiment includes multiplexing units 121, 122, and 123, an uplink transmission timing control unit 15, and a control signal processing unit 13 that are shared by all passive optical communication networks. Also, the terminal device 91 according to the present embodiment includes a decoding unit 17 shared by the passive optical communication networks # 1 and # m1, a decoding unit 112 provided for each of the passive optical communication networks # m2 to # m3, and passive optical communication. A distribution unit 14 shared by the networks # 1, # m1, and # m2 and a distribution unit 114 provided for each passive optical communication network # m3 are provided.

  Here, like the decoding unit 17 of the terminal device 91 of FIG. 9, the decoding unit 17 that accommodates a plurality of passive optical communication networks is particularly referred to as a “multiple accommodation decoding unit”. 9 shows a configuration including one decoding unit 17 that functions as a plurality of accommodating decoding units and a decoding unit 112 that accommodates the passive optical communication networks # m2 and # m3 one by one. You may be the structure of. For example, there may be two or more multiple-accommodating decoding units, or all the decoding units may be multiple-accommodating decoding units.

  Further, like the distribution unit 14 of the terminal device 91 of FIG. 9, the distribution unit 14 that accommodates a plurality of passive optical communication networks is particularly referred to as a “multiple accommodation distribution unit”. Although the terminal device 91 of FIG. 9 shows the structure provided with the one distribution part 14 which functions as a several accommodation distribution part, and the distribution part 114 which accommodates the passive optical communication network # m3 one by one, it is a structure other than this. It does not matter. For example, there may be two or more multiple distribution units, or all distribution units may be multiple distribution units.

  In the reception method of the terminal device 91 according to the present embodiment, the terminal device 91 includes an optical reception procedure, a reception signal multiplexing procedure, a decoding procedure, a decoded signal multiplexing procedure, a distribution procedure, a data signal multiplexing procedure, At least one of an uplink transmission timing control procedure and a control signal processing procedure is sequentially executed. A plurality of optical receivers 111 execute an optical reception procedure, a multiplexer 18 executes a received signal multiplexing procedure, decoding units 17 and 112 execute a decoding procedure, a multiplexing unit 16 executes a decoded signal multiplexing procedure, The distribution units 14 and 114 execute the distribution procedure, the multiplexing unit 121 executes the data signal multiplexing procedure, the uplink transmission timing control unit 15 executes the uplink transmission timing control procedure, and the control signal processing unit 13 controls the control signal processing procedure. Execute.

  Each functional block will be described. The optical receivers 111 of # 1 to # m1 have a function of converting optical signals from the passive optical communication networks # 1 to # m1 into electric signals and transferring them to the multiplexer 18. The optical receivers 111 of # m2 to # m3 have a function of converting optical signals from the passive optical communication networks # m2 to # m3 into electric signals and transferring them to the decoder 112. The multiplexing unit 18 has a buffer function for temporarily holding signals received from a plurality of ports, and a function for temporally multiplexing the signals stored in the buffer and transferring the signals to the decoding unit 17. The decoding units 17 and 112 of # 1 to # m2 have a function of decoding the encoded input signal and transferring it to the multiplexing unit 16. The decoding unit 112 of # m3 has a function of decoding the encoded input signal and transferring it to the distribution unit 114.

  The multiplexing unit 16 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes signals stored in the buffer and transfers the signals to the distribution unit 14. The distributing units 14 and 114 transfer the data signal SD in the input signal to the multiplexing unit 121, transfer the MPCP Report signal RM to the multiplexing unit 122, and transfer other control signals SC to the multiplexing unit 123. And having a function.

  The multiplexing unit 121 has a buffer function for temporarily holding signals received from a plurality of ports, and a function for temporally multiplexing the signals stored in the buffers and transferring the signals to a higher-level communication network. The multiplexing unit 122 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes the signals stored in the buffer and transfers the signals to the uplink transmission timing control unit 15. The multiplexing unit 123 has a buffer function that temporarily holds signals received from a plurality of ports, and a function that temporally multiplexes signals stored in the buffer and transfers the signals to the control signal processing unit 13.

  The uplink transmission timing control unit 15 has a function of allocating a band to all the subscriber line terminating devices 92 accommodated in the terminal station device 91 based on the received MPCP Report signal RM. As an example of bandwidth allocation to the subscriber line terminator 92, a transmission permission amount is determined in accordance with a ratio of transmission request amounts from the subscriber line terminator 92, and transmission delay and transmission permission of each subscriber line terminator 92 are determined. Although there is a method of allocating the transmission start time and the transmission continuation time so that the signals from the subscriber line terminating devices 92 do not collide based on the amount, other methods may be used. The control signal processing unit 13 has a function of processing the received control signal.

  In the eighth embodiment, a multiplexing unit 18 is provided between the optical receiving unit 111 and the decoding unit 17, and a multiplexing unit 16 is provided between the decoding units 17 and 112 and the distribution unit 14, so that the uplink transmission timing control unit 15 The control signal processing unit 13 is shared by all passive optical communication networks, the decoding unit 17 is shared by some passive optical communication networks, and the distribution unit 14 is shared by some passive optical communication networks. Thereby, Embodiment 8 can reduce the function required for each passive optical communication network, and can realize the cost reduction of the terminal device 91.

  The difference between the eighth embodiment and the seventh embodiment is that one distribution unit 14 does not accommodate all passive optical communication networks, but only some passive optical communication networks. Therefore, in the eighth embodiment, since the load of the distribution unit 14 is distributed, the processing capability of the terminal device 91 can be increased as compared with the seventh embodiment.

  As described above, according to the present invention, in the terminal station device 91 having a collective bandwidth allocation for all the subscriber line termination devices 92 accommodated in a plurality of passive optical communication networks, some functions of the terminal station device 91 are provided. By sharing the block among a plurality of passive optical communication networks, the cost of the terminal device 91 can be further reduced.

  The present invention can be applied to the information communication industry.

11: Transmission / reception function unit 111: Optical reception unit 112: Decoding unit 113: Control signal processing unit 114: Distribution unit 115: Uplink transmission timing control unit 12: Concentration function units 121, 122, 123: Multiplexing unit 125: Concentration uplink transmission Timing control unit 13: control signal processing unit 14: distribution unit 15: uplink transmission timing control unit 16, 18: multiplexing unit 17: decoding unit 91: terminal station device 92: subscriber line termination device

Claims (9)

A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A plurality of decoding units for decoding each signal received by the plurality of optical receiving units for each received signal of the optical receiving unit;
Each of the signals decoded by the decoding unit is divided into the transmission data, information about the transmission data, and a control signal for controlling the subscriber line termination device for each received signal of the optical receiving unit A distribution section;
A multiplexing unit that multiplexes the transmission data output from the distribution unit and transfers the multiplexed data to an upper communication network;
Uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiving unit based on information on the transmission data included in the received signals of the plurality of optical receiving units output from the distributing unit A concentric upstream transmission timing control unit that is assigned to each optical receiving unit,
An uplink transmission timing control unit that assigns the uplink transmission timing assigned from the concentric uplink transmission timing control unit to the subscriber line termination device accommodated in the optical reception unit, for each optical reception unit;
Based on the control signal output from the distribution unit, a control signal processing unit that executes control for the subscriber line termination device accommodated in the plurality of optical receiving units;
A terminal device comprising: A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A plurality of decoding units for decoding each signal received by the plurality of optical receiving units for each received signal of the optical receiving unit;
A plurality of sorting units that separate each signal decoded by the decoding unit into information about the transmission data and the transmission data for each reception signal of the optical reception unit;
A multiplexing unit that multiplexes the transmission data output from the distribution unit and transfers the multiplexed data to an upper communication network;
Based on the information related to the transmission data output from the distribution unit, the uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiver is assigned to each subscriber line termination device. A transmission timing control unit;
A terminal device comprising: The distribution unit further separates each signal decoded by the decoding unit into a control signal for controlling the subscriber line termination device for each received signal of the optical receiving unit,
A control signal processing unit for performing control on the subscriber line terminating device accommodated in the plurality of optical receiving units based on the control signal output from the distributing unit;
The terminal device according to claim 2, further comprising: A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A plurality of decoding units for decoding each signal received by the plurality of optical receiving units for each received signal of the optical receiving unit;
A decoded signal multiplexing unit that multiplexes signals output from the plurality of decoding units;
The signal multiplexed by the decoded signal multiplexing unit is separated into the transmission data, information related to the transmission data, and a control signal for controlling the subscriber line termination device, and the transmission data is transferred to a higher-level communication network. A sorting section to perform,
Based on the information related to the transmission data output from the distribution unit, the uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiver is assigned to each subscriber line termination device. A transmission timing control unit;
Based on the control signal output from the distribution unit, a control signal processing unit that executes control for the subscriber line termination device accommodated in the plurality of optical receiving units;
A terminal device comprising: A second optical receiver for receiving a signal transmitted from the subscriber line termination device;
A second decoding unit that decodes each signal received by the second optical receiving unit for each received signal of the second optical receiving unit;
A second distribution unit that separates the signal decoded by the second decoding unit into the transmission data, information about the transmission data, and the control signal;
A data signal multiplexing unit that multiplexes the transmission data output from the distribution unit and the second distribution unit and transfers the multiplexed data to a higher-level communication network;
Further comprising
The control signal processing unit includes the subscriber line termination device and the second light accommodated in the plurality of optical reception units based on the control signals output from the distribution unit and the second distribution unit. Performing control on the subscriber line termination device accommodated in the receiving unit;
The uplink transmission timing control unit is configured such that the subscriber line terminating device is a receiving destination optical receiving unit or the second receiving unit based on information on the transmission data output from the distributing unit and the second distributing unit. An uplink transmission timing for transmitting a signal to the optical receiver is assigned to each subscriber line termination device.
The terminal device according to claim 4. A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal device,
A plurality of optical receivers for receiving signals transmitted from the subscriber line termination device;
A received signal multiplexer for multiplexing each signal received by the plurality of optical receivers;
A decoding unit for decoding the signal output from the received signal multiplexing unit;
Distributing the signal decoded by the decoding unit into the transmission data, information about the transmission data, and a control signal for controlling the subscriber line termination device, and transferring the transmission data to a higher-level communication network And
Based on the information related to the transmission data output from the distribution unit, the uplink transmission timing at which the subscriber line termination device transmits a signal to the receiving optical receiver is assigned to each subscriber line termination device. A transmission timing control unit;
Based on the control signal output from the distribution unit, a control signal processing unit that executes control for the subscriber line termination device accommodated in the plurality of optical receiving units;
A terminal device comprising: A second optical receiver for receiving a signal transmitted from the subscriber line termination device;
A second decoding unit that decodes each signal received by the second optical receiving unit for each received signal of the second optical receiving unit;
A decoded signal multiplexing unit that multiplexes output signals of the decoding unit and the second decoding unit and outputs the multiplexed signals to the distribution unit;
The terminal device according to claim 6, further comprising: A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal station reception method,
An optical reception procedure in which the plurality of optical reception units receive a signal transmitted from the subscriber line termination device;
A decoding procedure in which a plurality of decoding units provided for each of the optical receiving units decodes a signal received by the optical receiving unit;
A plurality of sorting units provided for each optical receiving unit separates the signal decoded by the decoding unit into the transmission data, information on the transmission data, and a control signal for controlling the subscriber line termination device Distribution procedure,
A multiplexing unit provided in common to the plurality of optical receiving units, a multiplexing procedure for multiplexing the transmission data output from the plurality of distributing units and transferring the multiplexed data to an upper communication network,
A concentric upstream transmission timing control unit provided in common to the plurality of optical reception units is configured to receive the optical reception of the subscriber line termination device based on the information on the transmission data output from the plurality of distribution units. Uplink transmission timing for transmitting a signal to each of the optical reception units is assigned to each of the optical reception units, and a plurality of uplink transmission timing control units provided for each of the optical reception units is assigned to the uplink transmission timing from the concentrated uplink transmission timing control unit An uplink transmission timing control procedure for allocating to the subscriber line termination device accommodated in the optical receiver,
A control signal processing unit provided in common to the plurality of optical reception units controls the subscriber line termination device accommodated in the plurality of optical reception units based on the control signals output from the plurality of distribution units. A control signal processing procedure for executing
The reception method of the terminal station apparatus which performs. A plurality of optical receivers accommodating one or more subscriber line terminators, controlling uplink transmission timing of the subscriber line terminators and transferring transmission data of the subscriber line terminators to a higher-level communication network; A terminal station reception method,
A plurality of optical receivers for receiving a signal transmitted from the subscriber line terminating device; and
A decoding procedure in which a plurality of decoding units provided for each of the optical receiving units decodes a signal received by the optical receiving unit;
A plurality of distribution units provided for each of the optical reception units, a distribution procedure for separating the signal decoded by the decoding unit into information related to the transmission data and the transmission data;
A multiplexing unit provided in common to the plurality of optical receiving units, a multiplexing procedure for multiplexing the transmission data transferred from the plurality of distributing units and transferring the multiplexed data to an upper communication network,
The uplink transmission timing control unit provided in common to the plurality of optical reception units is configured to allow the subscriber line termination device to be in the optical reception unit of the accommodation destination based on the information on the transmission data output from the plurality of distribution units. An uplink transmission timing control procedure for assigning an uplink transmission timing for transmitting a signal to each of the subscriber line termination devices;
The reception method of the terminal station apparatus which performs.

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