JP5562811B2 - Control device, transmission device and transmission system - Google Patents

Description

  The present invention relates to a control device, a transmission device, and a transmission system that multiplex and transmit data from a plurality of lines.

  Conventionally, in order to transmit data from a plurality of lines through a single transmission line, a method such as time division multiplexing (Time Division Multiplexing) in which the data are arranged in time and multiplexed is used. However, if data from a plurality of lines are received and multiplexed at the same timing, the transmission path may be in a congestion (burst) state. Various techniques have been developed to avoid the burst.

  For example, when a terminal device of a subscriber accommodated in a line transmits data to a network, an access network device and a subscriber exchange that connect the terminal device and the network are in response to a request for data transmission from the terminal device. There is a technique for efficiently using a communication band by reserving a band necessary for the data transmission in a transmission path connecting the two (see Patent Document 1 or the like).

JP 2003-87042 A

  However, in the prior art, even if a bandwidth is reserved between the network device and the subscriber exchange, bursts may still occur when data from a plurality of lines is concentrated.

  SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, an object of the present invention is to provide a technique that can efficiently transmit data without generating a burst even when data from a plurality of lines is concentrated.

One aspect of a control device illustrating the present invention is a control device for controlling a transmission device that stores data from a plurality of lines in a time slot of a frame having a plurality of time slots and transmits the frame to a network. each number of time slots to determine a plurality of combinations assigned in accordance with the waiting times that will be set for each line, among the plurality of combinations in line, from the line to the time slots contained in a predetermined condition is satisfied combination comprising a setting unit for setting for allocation stores data to transmitter.

  The predetermined condition may be that the bandwidth usage is the smallest.

Another aspect of the control device exemplifying the present invention is a control device for controlling a transmission device that stores data from a plurality of lines in a time slot of a frame having a plurality of time slots and transmits the frame to the network. determining a random number generator for generating a random number, a plurality of combinations each number of time slots is allocated in accordance with the set Ru standby number per line, among the plurality of combinations in line, corresponding to the value of the random number comprising a setting unit which performs setting to allocation stores data from the line to the time slots contained in the combination in the transmission device.

  In addition, the setting unit further includes a determination unit that pre-calculates the bandwidth usage of the time slot after the allocation when allocating the combination according to the random number, and determines whether the calculated bandwidth usage is equal to or greater than a predetermined threshold. When the determination by the determination unit is true, the setting unit may cause the random number generation unit to generate a random number again, and assign and set to another combination of time slots according to the generated random number.

  In addition, the setting unit may count the number of times when the determination by the determination unit in the line is true, and may cancel the setting for the transmission apparatus when the number is equal to or greater than a predetermined number.

One aspect of a transmission apparatus illustrating the present invention is a transmission apparatus that stores data from a plurality of lines in a time slot of a frame having a plurality of time slots and transmits the frame to a network, and is set for each line. A plurality of combinations assigned to each of the number of time slots corresponding to the number of standby times , and assigning and storing data from the line to time slots included in the combination satisfying a predetermined condition among the plurality of combinations in the line A setting unit for setting is provided.

Another aspect of the transmission apparatus illustrating the present invention is a transmission apparatus that stores data from a plurality of lines in a time slot of a frame having a plurality of time slots and transmits the frame to a network, and generates a random number. a generating unit, respectively the number of time slots corresponding to the set Ru standby number determines the plurality of combinations that are assigned to each line, among the plurality of combinations in line, the time included in the combination corresponding to the value of the random number A setting unit configured to assign and store data from the line to the slot.

One aspect of a transmission system exemplifying the present invention includes a transmission device that stores data from a plurality of lines in a time slot of a frame having a plurality of time slots, and transmits the frame to a network, and a control device that controls the transmission device a transmission system with the door, the control device determines a plurality of combinations each number of time slots corresponding to the waiting times that will be set for each channel is assigned, among the plurality of combinations in line, a predetermined comprising a setting unit that performs a transmission apparatus allows the system to allocation stores data from the line to the time slots contained in satisfying combination.

Another aspect of the transmission system illustrating the present invention includes a transmission device that stores data from a plurality of lines in a time slot of a frame having a plurality of time slots, and transmits the frame to a network, and a control device that controls the transmission device a transmission system with the door, the control device determines a random number generator for generating a random number, a plurality of combinations each number of time slots is allocated in accordance with the set Ru standby number per line, the line It comprises of the plurality of combinations, a setting unit for setting for allocation stores data from the line to the time slots included in the combination corresponding to the value of the random number to the transmission device, the at.

  According to the present invention, even when data from a plurality of lines are concentrated, data can be efficiently transmitted without generating a burst.

The figure which shows the structure of the transmission system which concerns on one Embodiment. The figure which shows the structure of the server which concerns on one Embodiment. The figure which shows the structure of the transmission apparatus which concerns on one Embodiment. The flowchart which shows the processing operation by the transmission system of one Embodiment. The figure which shows an example of a line management table The figure which shows an example of the addition result of the bandwidth usage of CH by line allocation processing The figure which shows an example of the list | list of the series of CH which can be allocated of the line 1 and the line 2 The figure which shows an example of distribution of the band usage-amount of each CH by an allocation process The figure which shows the structure of the transmission system which concerns on the modification of one Embodiment. The figure which shows the structure of the transmission apparatus which concerns on the modification of one Embodiment. The flowchart which shows the processing operation by the transmission system of other embodiment.

<< One Embodiment >>
FIG. 1 is a diagram illustrating a configuration of a transmission system SYS according to an embodiment of the present invention.

  The transmission system SYS of this embodiment includes a server 10 and transmission devices 20 and 30.

  The server 10 operates as a control device that performs setting control of the transmission devices 20 and 30 via the network. As the server 10, a general computer can be appropriately selected and used. FIG. 2 shows an example of the configuration of the server 10.

  The server 10 includes a CPU 11, a storage unit 12, a network interface (network I / F) 13, and an input / output I / F 14 and is connected so as to be able to transmit information to each other. Further, the server 10 is connected to an output device 15 that displays setting information and an operation state of the transmission devices 20 and 30 and an input device 16 that receives an input from an administrator via the input / output I / F 14. . A general liquid crystal monitor, a printer, or the like can be selected as the output device 15 and a keyboard, a mouse, or the like can be appropriately selected and used as the input device 16.

  The CPU 11 executes a control program stored in the storage unit 12 and sets the transmission devices 20 and 30 via the network I / F 13 in response to an instruction from an administrator received via the input device 15. Works as. A general processor can be used as the CPU 11.

  The storage unit 12 stores setting data and control programs for the transmission apparatuses 20 and 30. Data and programs stored in the storage unit 12 can be referred to as appropriate from the CPU 11. For the storage unit 12, a general storage device such as a hard disk device or a magneto-optical disk device can be selected and used.

The transmission apparatuses 20 and 30 transmit the TDM data received from the lines 1 to 10 or the lines 11 to 20 to the network, or transmit the TDM data received from the network to the lines 1 to 10 or the lines 11 to 20, respectively. To do. In the present embodiment, it is assumed that data transmission between the transmission device 20 and the transmission device 30 is performed by a Giga Ethernet (registered trademark) line (GbE line). FIG. 3 shows an exemplary configuration of the transmission apparatus 20. The transmission device 30 is the same as the configuration of the transmission device 20 except for the line number, and detailed description thereof is omitted.

  The transmission apparatus 20 includes a CPU 21, a storage unit 22, a clock generation unit 23, a TDM / packet conversion unit 24, and a network I / F 25.

  The CPU 21 is a processor that comprehensively controls each unit of the transmission device 20. For example, the CPU 21 executes a control program stored in the storage unit 22 and based on a frame synchronization signal indicating the start of a frame output by the clock generation unit 23 and a setting for each line by the server 10 described later. The TDM / packet converter 24 stores the TDM data received from the lines 1 to 10 in a frame such as an ether frame or an IP frame, and converts the frame into a packet for transmission. Further, the CPU 21 sends a packet received from the GbE line via the network I / F 25 to the TDM / packet converter 24 based on the frame synchronization signal of the clock generator 23 and the setting for each line by the server 10. The TDM data addressed to the lines 1 to 10 is reassembled and transmitted to each line.

The TDM / packet conversion unit 24 includes a switch such as a multiplexer (MUX) / demultiplexer (DEMUX) that operates based on the frame synchronization signal of the clock generation unit 23. Further, the frame in this embodiment is composed of 2 ^M time slots (= channel (CH)) in which 125 μsec is a unit time. The TDM / packet conversion unit 24 uses the frame synchronization signal output from the clock generation unit 23 as a reference, and converts the TDM data of the lines 1 to 10 to each CH of the frame based on the setting for each line by the server 10. Store and multiplex.

  Here, M is a positive number of M = 0, 1,..., And the value of M is determined according to the configuration of the transmission system SYS, the number of lines, and the like. In this embodiment, M = 8 and the number of CHs is 64. The clock generation unit 23 outputs a frame synchronization signal every 64 CH × 125 μs, and the TDM / packet conversion unit 24 outputs from the first CH of the frame from the lines 1 to 10 every time the frame synchronization signal is output. The TDM data is sequentially stored, the frame is converted into a packet and transmitted to the transmission apparatus 30.

  Further, the CPU 21 and the TDM / packet conversion unit 24 according to the present embodiment recognize which channel is the CH by counting at intervals of 125 μs with reference to the frame synchronization signal of the clock generation unit 23. In addition, since the TDM / packet conversion unit 24 of the present embodiment transmits a packet to the transmission apparatus 30 via the GbE line, information such as the transmission apparatus 30 and the IP address or MAC address of the transmission destination is included in the header of the frame. May be added, or empty information may be added. Alternatively, the TDM / packet conversion unit 24 may add information such as a dummy address to the header of the frame.

  The storage unit 22 is formed of a hard disk device, a semiconductor memory, or the like, stores a control program, and stores in which CH the TDM data from the lines 1 to 10 set by the server 10 is stored, as will be described later. The information that specifies is stored.

  The network I / F 25 is formed of a general network interface, and transmits a frame converted into a packet by the TDM / packet conversion unit 24 to a GbE line or a packet received from the transmission apparatus 30 via the GbE line. Are output to the TDM / packet converter 24. The network I / F 25 of the present embodiment also receives a control signal from the server 10 via the network and outputs it directly to the CPU 21.

  Next, processing operations in the transmission system SYS according to the present embodiment will be described with reference to the flowchart of FIG.

  In the following, an assignment process for each line of the transmission apparatus 20 by the server 10 will be described. Since the assignment process for each line of the transmission apparatus 30 is the same as that of the transmission apparatus 20, a detailed description thereof is omitted.

  Step S101: The CPU 11 of the server 10 receives a data transmission setting change instruction to the transmission device 20 from the administrator via the input device 16. The CPU 11 reads the current line management table including the line speed F (kbps) of each line 1 to 10 of the transmission apparatus 20, the bandwidth S (byte / 125 μsec), and the number N of standby times from the storage unit 12. The CPU 11 displays the current line management table on the output device 15. The CPU 11 appropriately changes the parameter value of each line in accordance with the input from the administrator, creates a new line management table 40 as shown in FIG. 5, and temporarily records it in an internal memory (not shown) of the CPU 11. To do.

  Step S102: Based on the line management table 40, the CPU 11 sequentially performs assignment processing from the line 1 for assigning to which CH the TDM data of the lines 1 to 10 is stored. In this embodiment, the processing is performed from the line 1, but the processing may be started from any line.

  As illustrated in FIG. 6A, the CPU 11 once resets the bandwidth usage of each CH in the transmission device 20 to “0”. At the same time, the CPU 11 creates a list of assignable CH sequences shown in FIG. 7A based on the setting of the line 1 in the line management table 40. The “sequence number” in the list shown in FIG. 7A indicates the CH sequence number that can be set in each row, and the “CH number in the sequence” indicates the CH number constituting each sequence. Further, “maximum value of intra-sequence band” indicates the bandwidth usage of the channel having the maximum bandwidth usage among the CHs of each sequence. In FIG. 7A, the maximum bandwidth usage of each CH sequence is 0 immediately after the start of the allocation process.

Here, the CH sequence is determined based on the number of standby times N (or standby time T = 2 ^m × 125 μsec (m <M)) (transmission timing) set for each line, and the TDM data of the line Can be stored in a combination of CH. For example, when the number of standby times N is set to 2 ^m = 8 (m = 3) as in the case of the line 1, CH1, CH9, CH17, CH25, CH33, CH41, CH49, and CH57 are one series. As shown in (a), there are eight combinations. Further, in the above case, the TDM / packet conversion unit 24 stores TDM data for 8 channels of CH2 to CH9 of the line 1 in one CH9 time slot once every 1 msec, that is, every 8 CH. To do.

  In the list shown in FIG. 7A, the CPU 11 satisfies a predetermined condition as a CH sequence for transmitting the TDM data of the line 1. Assign the CH sequence. The CPU 11 uses the bandwidth usage of CH1, CH9, CH17, CH25, CH33, CH41, CH49, and CH57 shown in FIG. 6A as the bandwidth usage by the TDM data of the line 1 = S × N = 5 × 8 = 40. Add (byte / 125 microseconds). FIG. 6B shows the addition result of line 1. The CPU 11 updates the addition result of FIG. 6B and records in the internal memory (not shown) that the line 1 is assigned the CH series 1 shown in FIG.

  Next, the CPU 11 creates a list of assignable CH sequences shown in FIG. 7B based on the setting of the line 2 in the line management table 40. The reason why the maximum bandwidth usage of the CH series 1 and 9 is 40 is that the bandwidth usage by the line 1 is added. In the list shown in FIG. 7B, the CPU 11 assigns a CH sequence with the smallest bandwidth usage, for example, the second CH sequence, as the CH sequence for transmitting the TDM data of the line 2. . The CPU 11 adds a value of bandwidth usage = 3 × 16 = 48 (bytes / 125 μsec) based on the TDM data of the line 2 to the bandwidth usage of CH2, CH18, CH34, and CH50 shown in FIG. FIG. 6C shows the addition result of the line 2. The CPU 11 updates the addition result in FIG. 6C and records in the internal memory (not shown) that the channel 2 shown in FIG.

  Thereafter, similarly, the CPU 11 performs assignment processing for the lines 3 to 10 based on the setting of the line management table 40. FIG. 6D shows the result of adding the bandwidth usage in each CH when lines 1 to 10 are allocated. FIG. 8 shows that the bandwidth usage of each CH is substantially uniform and flatly distributed by the allocation processing of this embodiment.

  Step S103: The CPU 11 updates the line management table 40 shown in FIG. 5 by overwriting the current line management table stored in the storage unit 12. The CPU 11 transmits information on the CH series allocated to the lines 1 to 10 to be recorded in the internal memory (not shown) to the transmission apparatuses 20 and 30 via the network (broken line in FIG. 1). The CPU 21 of the transmission apparatuses 20 and 30 records and sets the information on the CH series assigned to the lines 1 to 10 received via the network I / F 25 in the storage unit 22. The TDM / packet conversion unit 24 of the transmission apparatus 20 stores the TDM data received from the lines 1 to 10 in a frame based on the CH sequence information, converts the frame into a packet, and converts the frame into a packet. Send to.

  On the other hand, the TDM / packet conversion unit 24 of the transmission device 30 receives the packet from the transmission device 20, and based on the CH sequence information assigned to the lines 1 to 10 and the frame synchronization signal of the clock generation unit 23, The data is reassembled into TDM data for each of the lines 1 to 10 and transmitted to any of the destination lines 11 to 20.

As described above, in this embodiment, the server 10 assigns the TDM data of each line to the CH series having the smallest bandwidth usage, so that even if TDM data from a plurality of lines is concentrated, bursts are generated. Data can be transmitted efficiently without generation.
<< First Modification of One Embodiment >>
FIG. 9 is a diagram illustrating a configuration of a transmission system SYS2 according to the first modification of the embodiment of the present invention. Among the components of the transmission system SYS2 according to the present embodiment, the same components as those of the transmission system SYS of the first embodiment are given the same reference numerals, and detailed description thereof is omitted.

  FIG. 10 is a diagram illustrating a configuration of the transmission apparatuses 20 and 30 according to the present embodiment. Among the components of the transmission apparatuses 20 and 30 according to the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The difference between the transmission system SYS2 of this embodiment and the transmission system SYS of one embodiment is that 1) the two servers 10 are connected to the transmission device 20 and the transmission device 30, respectively, and control the transmission devices 20 and 30, 2) The transmission apparatuses 20 and 30 include an input / output I / F 26 and are connected to the server 10 via the input / output I / F 14 of the server 10.

  In addition, it is preferable that the server 10 of this embodiment performs the allocation process with respect to the lines 1-10 of the transmission apparatus 20, for example, and transmits to the transmission apparatus 30 via a network or a GbE line | wire after that.

  Moreover, the allocation process in the present embodiment is the same as that in the first embodiment, and a detailed description thereof will be omitted.

As described above, in this embodiment, the server 10 assigns the TDM data of each line to the CH series having the smallest bandwidth usage, so that even if TDM data from a plurality of lines is concentrated, bursts are generated. Data can be transmitted efficiently without generation.
<< Modification 2 of one embodiment >>
The transmission system according to the second modification of the embodiment of the present invention is the same as the transmission system SYS2 according to the first modification of the one embodiment shown in FIGS. Therefore, in the transmission system SYS2 and the components thereof according to the present embodiment, the same components as those of the first modification of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The difference between the transmission system SYS2 of the present embodiment and the first modification of the first embodiment is that 1) the server 10 connected to each of the transmission device 20 and the transmission device 30 monitors the operation state of the transmission devices 20 and 30. 2) The transmission devices 20 and 30 perform assignment processing upon receiving a setting change instruction from the administrator via the server 10.

  The assignment processing by the transmission apparatuses 20 and 30 after receiving the setting change instruction from the server 10 is the same as that in the first embodiment, and detailed description thereof is omitted.

As described above, in this embodiment, even if TDM data from a plurality of lines is concentrated, the transmission apparatuses 20 and 30 assign the TDM data of each line to the CH series with the smallest bandwidth usage. Data can be transmitted efficiently without generating a burst.
<< Other embodiments >>
A transmission system according to another embodiment of the present invention is the same as the transmission system SYS according to one embodiment shown in FIG. Therefore, in the transmission system and its components according to the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The differences between the transmission system SYS of this embodiment and the one embodiment are as follows.

  1) The CPU 11 of the server 10 generates a random number and assigns a channel CH series according to the random number.

  2) The CPU 11 sets a bandwidth usage threshold value α for each CH, and operates as a determination unit that determines whether or not the CH bandwidth usage amount is greater than or equal to the threshold value α as a result of the allocation processing for the processing target line. If the determination is true, the allocation process for the processing target line is performed again to allocate to another CH sequence.

  3) When the number of allocation processes for the same processing target line (hereinafter referred to as “reprocessing count K”) is equal to or greater than the threshold value β, the CPU 11 stops and ends the allocation process based on the new line management table 40. To do.

  Next, processing operations in the transmission system SYS according to the present embodiment will be described with reference to the flowchart of FIG.

  In the following description, for example, it is assumed that the threshold value α is set to 150 or 200 pbs / 125 μs, and the threshold value β is set to 3 to 5 times in advance. Also, the value of the number of reprocessing times K is initially set to “0”.

  Further, in the following, an assignment process for each line of the transmission apparatus 20 by the server 10 will be described. Since the assignment process for each line of the transmission apparatus 30 is the same as that of the transmission apparatus 20, a detailed description thereof is omitted.

  Step S201: The CPU 11 of the server 10 receives a data transmission setting change instruction to the transmission device 20 from the administrator via the input device 16. The CPU 11 reads the current line management table and threshold values α and β of the lines 1 to 10 of the transmission device 20 from the storage unit 12. The CPU 11 displays the current line management table on the output device 15. The CPU 11 appropriately changes the parameter value of each line according to the input from the administrator, creates a new line management table 40 as shown in FIG. 5, and temporarily records it in an internal memory (not shown). .

  Step S202: Based on the line management table 40, the CPU 11 sequentially performs assignment processing from the line 1 for assigning to which CH the TDM data of the lines 1 to 10 is stored. In this embodiment, the processing is performed from the line 1, but the processing may be started from any line.

  As illustrated in FIG. 6A, the CPU 11 once resets the bandwidth usage of each CH in the transmission device 20 to “0”. At the same time, the CPU 11 creates a list of assignable CH sequences shown in FIG. 7A based on the setting of the line 1 in the line management table 40.

  The CPU 11 of the present embodiment generates, for example, a random number having a range of CH series 1 to 8 in the list shown in FIG. 7A as a random number generator, and the CH of the number corresponding to the random number. The sequence is assigned as a CH sequence for transmitting the TDM data of line 1.

  That is, when the CH sequence 1 is assigned, the CPU 11 determines the bandwidth based on the TDM data of the line 1 to the bandwidth usage of the CH1, CH9, CH17, CH25, CH33, CH41, CH49, and CH57 shown in FIG. Use amount = 5 × 8 = 40 (byte / 125 μsec) is added. The CPU 11 records in the internal memory (not shown) that the channel 1 shown in FIG. 7A is assigned to the line 1 together with the addition result shown in FIG.

  Step S203: As shown in FIG. 6B, the CPU 11 determines whether there is a CH whose band usage is equal to or greater than the threshold value α, based on the addition result in step S202. When there is no CH whose bandwidth usage is equal to or greater than the threshold value α, the CPU 11 sets the reprocessing count K = 0 and proceeds to step S205 (NO side). On the other hand, when there is a channel whose bandwidth usage is equal to or greater than the threshold value α, the CPU 11 returns the bandwidth usage of each CH to the value before the addition processing in step S202 and records the line recorded in the internal memory (not shown). 1 deletes the information that assigns the CH sequence 1 shown in FIG. The CPU 11 increases the reprocessing count K by 1, and proceeds to step S204 (YES side).

  Step S204: The CPU 11 determines whether or not the reprocessing count K is equal to or greater than the threshold value β. If the reprocessing count K is less than the threshold value β, the CPU 11 proceeds to step S202 (NO side), and performs the allocation processing for the line 1 again, for example. On the other hand, if the reprocessing count K is equal to or greater than the threshold value β (YES side), the CPU 11 determines that the allocation processing by the line management table 40 has failed, holds the current line management table in the storage unit 12 and continues. Cancels the process and exits. Thereby, it is possible to avoid a state such as a deadlock due to the allocation process.

  Step S205: The CPU 11 determines whether or not allocation processing has been performed for all lines. If the CPU 11 has performed allocation processing for all lines, the CPU 11 proceeds to step S206 (YES side). On the other hand, if there is a line that has not been assigned, the CPU 11 proceeds to step S202 (NO side) and performs the processes of steps S202 to S204 until the assignment process is performed for all the lines.

  Step S206: The CPU 11 updates the line management table 40 shown in FIG. 5 by overwriting the current line management table stored in the storage unit 12. The CPU 11 transmits information on the CH series allocated to the lines 1 to 10 to be recorded in the internal memory (not shown) to the transmission apparatuses 20 and 30 via the network (broken line in FIG. 1). The CPU 21 of the transmission apparatuses 20 and 30 records and sets the information on the CH series assigned to the lines 1 to 10 received via the network I / F 25 in the storage unit 22. The TDM / packet conversion unit 24 of the transmission apparatus 20 stores the TDM data received from the lines 1 to 10 in a frame based on the CH sequence information, converts the frame into a packet, and converts the frame into a packet. Send to.

  On the other hand, the TDM / packet conversion unit 24 of the transmission device 30 receives the packet from the transmission device 20, and based on the CH sequence information assigned to the lines 1 to 10 and the frame synchronization signal of the clock generation unit 23, The data is reassembled into TDM data for each of the lines 1 to 10 and transmitted to any of the destination lines 11 to 20.

  As described above, in this embodiment, the server 10 assigns the TDM data of each line to the CH series based on the random number, thereby generating a burst even if TDM data from a plurality of lines is concentrated. Data can be transmitted efficiently.

Also, by providing the threshold α for the bandwidth usage, TDM data from a plurality of lines can be more efficiently distributed and transmitted.
<< Modification 1 of Other Embodiments >>
A transmission system according to Modification 1 of the other embodiment of the present invention is the same as the transmission system SYS2 according to Modification 1 of the embodiment shown in FIG. Therefore, in the components of the transmission system SYS2 according to the present embodiment, the same components as those in the first modification of the first embodiment are assigned the same reference numerals, and detailed descriptions thereof are omitted.

  Moreover, the transmission apparatuses 20 and 30 of this embodiment are the same as the transmission apparatus of the modification 1 of one Embodiment shown in FIG. Therefore, in the constituent elements of the transmission apparatuses 20 and 30 according to the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The difference between the transmission system SYS2 of the present embodiment and the transmission system SYS of the other embodiments is that 1) the two servers 10 are connected to the transmission device 20 and the transmission device 30, respectively, and control the transmission devices 20, 30. 2) The transmission apparatuses 20 and 30 include an input / output I / F 26 and are connected to the server 10 via the input / output I / F 14 of the server 10.

  In addition, it is preferable that the server 10 of this embodiment performs the allocation process with respect to the lines 1-10 of the transmission apparatus 20, for example, and transmits to the transmission apparatus 30 via a network or a GbE line | wire after that.

  Moreover, the allocation process in the present embodiment is the same as in the other embodiments, and detailed description thereof is omitted.

  As described above, in this embodiment, the server 10 assigns the TDM data of each line to the CH series based on the random number, thereby generating a burst even if TDM data from a plurality of lines is concentrated. Data can be transmitted efficiently.

Also, by providing the threshold α for the bandwidth usage, TDM data from a plurality of lines can be more efficiently distributed and transmitted.
<< Modification 2 of Other Embodiments >>
The transmission system according to the second modification of the other embodiment of the present invention is the same as the transmission system SYS2 according to the first modification of the other embodiment shown in FIG. 9 and FIG. Accordingly, in the transmission system SYS2 and the components thereof according to the present embodiment, the same components as those of the first modification of the other embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  The differences between the transmission system SYS2 of the present embodiment and the modification 1 of the other embodiments are as follows: 1) The server 10 connected to each of the transmission device 20 and the transmission device 30 monitors the operating state of the transmission devices 20 and 30. 2) The transmission devices 20 and 30 perform assignment processing upon receiving a setting change instruction from the administrator via the server 10.

  The assignment processing by the transmission apparatuses 20 and 30 after receiving the setting change instruction from the server 10 is the same as in the other embodiments, and detailed description thereof is omitted.

  As described above, in this embodiment, the transmission apparatuses 20 and 30 assign the TDM data of each line to the CH series based on the random number, so that even if TDM data from a plurality of lines is concentrated, the burst is performed. It is possible to efficiently transmit data without generating any.

Also, by providing the threshold α for the bandwidth usage, TDM data from a plurality of lines can be more efficiently distributed and transmitted.
<< Additional items of embodiment >>
(1) In the above-described one embodiment, a CH sequence satisfying a predetermined condition that the bandwidth usage is the smallest is assigned as a CH sequence for transmitting TDM data of each line. It is not limited. For example, it is preferable to determine a predetermined condition for allocating to each line according to the configuration of the transmission system, the number of lines connected to the transmission apparatus, etc., for example, assigning the CH sequence with the maximum bandwidth usage May be.

  (2) In the above-described one embodiment, the threshold value α may be set for the band usage amount of each CH in the allocation process. Thereby, TDM data from a plurality of lines can be more efficiently distributed and transmitted.

  (3) In the above-described other embodiments, the values of the threshold α and the threshold β are set to 150, 200 pbs / 125 μs, or 3 to 5 times, respectively, but the present invention is not limited to this, and the transmission system It is preferable to set according to the configuration of the above and the number of lines connected to the transmission apparatus.

  Further, at least the threshold value α may not be set.

  (4) In the modification of the above embodiment, the server 10 is connected to each of the transmission apparatuses 20 and 30, but the present invention is not limited to this. One server 10 may be alternately connected to the transmission device 20 and the transmission device 30 to perform the assignment process. That is, for example, the server 10 is first connected to the transmission apparatus 20 and an assignment process for the line of the transmission apparatus 20 is performed. Thereafter, the same server 10 may be connected to the transmission apparatus 30, and the CH sequence information assigned to the lines 1 to 10 may be set in the transmission apparatus 30.

  (5) In the second modification of the above embodiment, the server 10 is directly connected to the transmission device 20 or the transmission device 30. However, the present invention is not limited to this, and as shown in FIG. The devices 20 and 30 may be connected.

  From the above detailed description, features and advantages of the embodiment will become apparent. It is intended that the scope of the claims extend to the features and advantages of the embodiments described above without departing from the spirit and scope of the right. Further, any person having ordinary knowledge in the technical field should be able to easily come up with any improvements and changes, and there is no intention to limit the scope of the embodiments having the invention to those described above. It is also possible to use appropriate improvements and equivalents within the scope disclosed in.

10 server, 11, 21 CPU, 12, 22 storage unit, 13, 25 network I / F, 14, 26 input / output I / F, 15 output device, 16 input device, 20, 30 transmission device, 23 clock generation unit, 24 TDM / packet converter, SYS, SYS2 transmission system

Claims (9)

A control device for controlling a transmission device for storing data from a plurality of lines in the time slot of a frame having a plurality of time slots and transmitting the frame to a network,
Determining a plurality of combinations in which the time slots respectively assigned a number corresponding to the waiting times for the Ru is set for each line, among the plurality of combinations of the line, the time slots contained in a predetermined condition is satisfied combination the data allows the system to allocated storage from said line comprise a setting unit which performs the transmission apparatus to the control apparatus according to claim. The control device according to claim 1,
The control apparatus is characterized in that the predetermined condition is that a bandwidth usage is the smallest. A control device for controlling a transmission device for storing data from a plurality of lines in the time slot of a frame having a plurality of time slots and transmitting the frame to a network,
A random number generator for generating random numbers;
Determining a plurality of combinations in which the time slots respectively assigned a number corresponding to the waiting times for the Ru is set for each line, among the plurality of combinations in the line, included in the combination corresponding to the value of the random number a setting unit for setting for allocation stores data from the line to the time slots in the transmission device,
A control device comprising: The control device according to claim 3,
The setting unit
In assigning to the combination according to the random number, it further includes a determination unit that pre-calculates the bandwidth usage of the time slot after the allocation, and determines whether the calculated bandwidth usage is equal to or greater than a predetermined threshold,
When the determination by the determination unit is true, the setting unit causes the random number generation unit to generate a random number again, and assigns and sets to another time slot of another combination according to the generated random number. Control device. The control device according to claim 4,
The control unit counts the number of times when the determination by the determination unit in the line is true, and cancels the setting for the transmission device when the number is equal to or greater than a predetermined number. A transmission device for storing data from a plurality of lines in the time slot of a frame having a plurality of time slots, and transmitting the frame to a network,
Determining a plurality of combinations in which the time slots respectively assigned a number corresponding to the waiting times for the Ru is set for each line, among the plurality of combinations of the line, the time slots contained in a predetermined condition is satisfied combination A transmission apparatus comprising: a setting unit configured to assign and store data from the line. A transmission device for storing data from a plurality of lines in the time slot of a frame having a plurality of time slots, and transmitting the frame to a network,
A random number generator for generating random numbers;
Determining a plurality of combinations in which the time slots respectively assigned a number corresponding to the waiting times for the Ru is set for each line, among the plurality of combinations in the line, included in the combination corresponding to the value of the random number A setting unit configured to assign and store data from the line to the time slot;
A transmission apparatus comprising: A transmission system comprising: a transmission device that stores data from a plurality of lines in the time slot of a frame having a plurality of time slots, and transmits the frame to a network; and a control device that controls the transmission device,
Wherein the control device determines a plurality of combinations in which the time slots each number corresponding to the waiting times for the Ru is set for each line is assigned, among the plurality of combinations of the line, a predetermined condition is satisfied combination transmission system, wherein a data set to be allocated stored from the line in the time slot comprising a setting unit which performs the transmission device included in the. A transmission system comprising: a transmission device that stores data from a plurality of lines in the time slot of a frame having a plurality of time slots, and transmits the frame to a network; and a control device that controls the transmission device,
The control device includes:
A random number generator for generating random numbers;
Determining a plurality of combinations in which the time slots respectively assigned a number corresponding to the waiting times for the Ru is set for each line, among the plurality of combinations in the line, included in the combination corresponding to the value of the random number A transmission system comprising: a setting unit configured to set the transmission device to allocate and store data from the line in a time slot.

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