TWM605565U - Distributed synchronization system - Google Patents

Distributed synchronization system Download PDF

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TWM605565U
TWM605565U TW109209021U TW109209021U TWM605565U TW M605565 U TWM605565 U TW M605565U TW 109209021 U TW109209021 U TW 109209021U TW 109209021 U TW109209021 U TW 109209021U TW M605565 U TWM605565 U TW M605565U
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synchronization
signal
control signal
distributed
devices
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TW109209021U
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張智欽
王育民
張海劍
楊凱宇
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優達科技股份有限公司
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Abstract

The disclosure provides a distributed synchronization system, which includes a management device and a plurality of synchronization devices. The management device includes a network input interface and a network output interface, and is configured to: decode a precise time protocol packet to obtain a reference 1 pulse per second signal, a reference frequency signal and reference time of day information; send a reference synchronization signal and a reference control signal to a first synchronization device through the network output interface, wherein the reference synchronization signal includes the reference 1 pulse per second signal, the reference frequency signal and the reference time of day information, and the reference control signal requests the first synchronization device synchronizes with the management device.

Description

分散式同步系統Distributed synchronization system

本新型是有關於一種通訊同步機制，且特別是有關於一種分散式同步系統。The present invention relates to a communication synchronization mechanism, and particularly relates to a distributed synchronization system.

請參照圖1A，其是傳統框架交換器（chassis switch）的示意圖。如圖1A所示，在傳統框架交換器110中，各個線卡（line card，LC）112係獨立連接於控制平面（control plane，CP）111上，以進行時間、相位及頻率的同步。Please refer to FIG. 1A, which is a schematic diagram of a traditional chassis switch. As shown in FIG. 1A, in the traditional frame switch 110, each line card (LC) 112 is independently connected to a control plane (CP) 111 to synchronize time, phase, and frequency.

請參照圖1B，其是分散式分解框架（distributed disaggregated chassis，DDC）系統的示意圖。有別於圖1A的傳統框架交換器110，在圖1B中的DDC系統120中，CP 121與LC 122之間係採用交織連接（fabric）的方式連接。然而，此種連接方式並不支精確時間協定（precision time protocol，PTP）時間戳記、SyncE或其他硬體時鐘信號傳輸功能，而習知技術中一般會另設置連接於DDC系統的管理交換器，以解決上述問題。Please refer to FIG. 1B, which is a schematic diagram of a distributed disaggregated chassis (DDC) system. Different from the traditional frame switch 110 in FIG. 1A, in the DDC system 120 in FIG. 1B, the CP 121 and the LC 122 are connected in an interwoven connection (fabric) manner. However, this connection method does not support precision time protocol (PTP) timestamps, SyncE or other hardware clock signal transmission functions. In the prior art, a management switch connected to the DDC system is generally installed to Solve the above problems.

請參照圖2，其是設置有管理交換器的DDC系統的示意圖。如圖2所示，DDC系統200可包括管理交換器201、多個CP及LC（各LC例如可視為一個電信邊界時鐘（telecom boundary clock，T-BC）），而其個別可透過10吉位元乙太網路介面（以下略稱為10G介面）連接於管理交換器201。在圖2中，管理交換器201例如是具備IEEE 1588及同步乙太網路（Synchronous Ethernet，SyncE）能力的管理裝置，並可作為邊界時鐘（boundary clock，BC）以同步於DDC系統200中的LC。Please refer to Figure 2, which is a schematic diagram of a DDC system with a management switch. As shown in FIG. 2, the DDC system 200 may include a management switch 201, multiple CPs and LCs (each LC can be regarded as a telecom boundary clock (T-BC), for example), and each of them can transmit 10 gigabit A meta Ethernet interface (hereinafter referred to as a 10G interface) is connected to the management switch 201. In FIG. 2, the management switch 201 is, for example, a management device with IEEE 1588 and synchronous Ethernet (Synchronous Ethernet, SyncE) capabilities, and can be used as a boundary clock (BC) to synchronize with the DDC system 200 LC.

在此情況下，管理交換器201可經配置以基於主時鐘（grandmaster，GM）202所提供的PTP封包來讓DDC系統200中的各個LC進行同步，進而讓其他後端的裝置（例如所示的電信時間僕時鐘（Telecom Time Slave Clock，T-TSC）、eNodeB等）進行同步。In this case, the management switch 201 can be configured to synchronize the LCs in the DDC system 200 based on the PTP packets provided by the grandmaster (GM) 202, thereby allowing other back-end devices (such as the one shown) Telecom Time Slave Clock (Telecom Time Slave Clock, T-TSC), eNodeB, etc.) are synchronized.

然而，圖2所示的二層式DDC架構（即，一層為管理交換器201，另一層為DDC系統200中的多個LC）中，由於管理交換器201的運作一般將會有5~10ns的時間誤差，而DDC系統200中的各LC在進行同步時亦會有5~10ns的時間誤差，因此將相應地影響同步時的準確性。However, in the two-tier DDC architecture shown in FIG. 2 (ie, one layer is the management switch 201, and the other layer is the multiple LCs in the DDC system 200), the operation of the management switch 201 generally takes 5-10 ns. The time error of each LC in the DDC system 200 will also have a time error of 5-10 ns during synchronization, which will accordingly affect the accuracy of synchronization.

有鑑於此，本新型提供一種分散式同步系統，其可用於解決上述技術問題。In view of this, the present invention provides a distributed synchronization system, which can be used to solve the above technical problems.

本新型提供一種分散式同步系統，包括一管理裝置，其包括網路輸入介面及網路輸出介面，並經配置以：接收一精確時間協定封包，並解譯精確時間協定封包以取得一參考1秒脈衝（pulse per second，PPS）信號、一參考頻率信號及一參考日時間（time of day，ToD）資訊；透過管理裝置的網路輸出介面發送一參考同步信號及一參考控制信號至彼此串接的多個同步裝置中的第1個同步裝置，其中參考控制信號要求所述第1個同步裝置基於參考同步信號同步於管理裝置。This model provides a distributed synchronization system, including a management device, which includes a network input interface and a network output interface, and is configured to: receive a precise time protocol packet, and interpret the precise time protocol packet to obtain a reference 1 Pulse per second (PPS) signal, a reference frequency signal and a reference time of day (ToD) information; send a reference synchronization signal and a reference control signal to each other through the network output interface of the management device The first synchronization device among the plurality of connected synchronization devices, wherein the reference control signal requires the first synchronization device to synchronize with the management device based on the reference synchronization signal.

本新型提供一種分散式同步系統，包括多個同步裝置，其中前述同步裝置彼此串接且個別包括網路輸入介面及網路輸出介面，且前述同步裝置中的第1個同步裝置經配置以：透過所述第1個同步裝置的網路輸入介面從一管理裝置接收一參考同步信號及一參考控制信號，其中參考控制信號要求所述第1個同步裝置基於參考同步信號同步於管理裝置；基於參考同步信號及參考控制信號執行與管理裝置的一同步操作，並相應地產生一第一同步信號；透過所述第1個同步裝置的網路輸出介面發送第一同步信號及一第一控制信號至前述同步裝置中的第2個同步裝置，其中第一控制信號要求所述第2個同步裝置基於第一同步信號同步於所述第1個同步裝置。The present invention provides a distributed synchronization system including a plurality of synchronization devices, wherein the aforementioned synchronization devices are serially connected to each other and each includes a network input interface and a network output interface, and the first synchronization device of the aforementioned synchronization devices is configured to: Receiving a reference synchronization signal and a reference control signal from a management device through the network input interface of the first synchronization device, wherein the reference control signal requires the first synchronization device to synchronize with the management device based on the reference synchronization signal; The reference synchronization signal and the reference control signal perform a synchronization operation with the management device, and accordingly generate a first synchronization signal; send the first synchronization signal and a first control signal through the network output interface of the first synchronization device To the second synchronization device among the aforementioned synchronization devices, wherein the first control signal requires the second synchronization device to synchronize with the first synchronization device based on the first synchronization signal.

本新型提供一種分散式同步系統，包括彼此串接的多個同步裝置，其中各同步裝置包括網路輸入介面及網路輸出介面，且前述同步裝置中的第i個同步裝置經配置以：透過所述第i個同步裝置的網路輸入介面從前述同步裝置中的第i-1個同步裝置接收一同步信號及一控制信號，其中

Figure 02_image021
，N為前述同步裝置的總數；基於同步信號及控制信號執行與所述第i-1個同步裝置的一同步操作，並相應地產生另一同步信號；透過所述第i個同步裝置的網路輸出介面發送另一同步信號及另一控制信號。 The present invention provides a distributed synchronization system, which includes a plurality of synchronization devices connected in series, wherein each synchronization device includes a network input interface and a network output interface, and the i-th synchronization device among the aforementioned synchronization devices is configured to: The network input interface of the i-th synchronization device receives a synchronization signal and a control signal from the i-1th synchronization device in the aforementioned synchronization device, wherein
Figure 02_image021
, N is the total number of the aforementioned synchronization devices; a synchronization operation with the i-1th synchronization device is performed based on synchronization signals and control signals, and another synchronization signal is generated accordingly; through the network of the i-th synchronization device The output interface sends another synchronization signal and another control signal.

請參照圖3，其是依據本新型之一實施例繪示的分散式同步系統示意圖。在圖3中，分散式同步系統300例如是一DDC系統，其可包括管理裝置MM及彼此串接的N個同步裝置D1~DN（N為正整數），其中管理裝置MM例如是一管理交換器，而同步裝置D1~DN個別可為一線卡，但可不限於此。Please refer to FIG. 3, which is a schematic diagram of a distributed synchronization system according to an embodiment of the present invention. In FIG. 3, the distributed synchronization system 300 is, for example, a DDC system, which may include a management device MM and N synchronization devices D1~DN (N is a positive integer) connected in series, wherein the management device MM is, for example, a management exchange The synchronization devices D1~DN can be first-line cards, but they are not limited to this.

在本新型的實施例中，管理裝置MM可包括網路輸入介面IM及網路輸出介面OM，其可分別為RJ45輸入介面及RJ45輸出介面，但可不限於此。相似地，各同步裝置D1~DN亦可具有網路輸入介面及網路輸出介面。舉例而言，同步裝置D1（其可視為同步裝置D1~DN中的第1個同步裝置）可包括網路輸入介面I1及網路輸出介面O1，同步裝置D2（其可視為同步裝置D1~DN中的第2個同步裝置）可包括網路輸入介面I2及網路輸出介面O2，而同步裝置DN（其可視為同步裝置D1~DN中的第N個同步裝置）可包括網路輸入介面IN及網路輸出介面ON。In the embodiment of the present invention, the management device MM may include a network input interface IM and a network output interface OM, which may be an RJ45 input interface and an RJ45 output interface, but are not limited thereto. Similarly, each synchronization device D1~DN can also have a network input interface and a network output interface. For example, the synchronization device D1 (which can be regarded as the first synchronization device among the synchronization devices D1~DN) can include the network input interface I1 and the network output interface O1, and the synchronization device D2 (which can be regarded as the synchronization devices D1~DN) The second sync device in D1) can include network input interface I2 and network output interface O2, and sync device DN (which can be regarded as the Nth sync device among sync devices D1~DN) can include network input interface IN And the network output interface is ON.

為便於說明，以下將同步裝置D1~DN中的第i個（

Figure 02_image023
）同步裝置略稱為同步裝置Di，而其可包括網路輸入介面Ii及網路輸出介面Oi，但可不限於此。此外，相似於管理裝置MM，同步裝置Di的網路輸入介面Ii及網路輸出介面Oi亦可分別為RJ45輸入介面及RJ45輸出介面，但可不限於此。 For the convenience of explanation, the i-th one of the synchronization devices D1~DN (
Figure 02_image023
) The synchronization device is abbreviated as the synchronization device Di, and it may include a network input interface Ii and a network output interface Oi, but is not limited to this. In addition, similar to the management device MM, the network input interface Ii and the network output interface Oi of the synchronization device Di can also be RJ45 input interfaces and RJ45 output interfaces, but are not limited to this.

簡言之，管理裝置MM及同步裝置D1~DN可依序透過RJ45輸入/輸出介面串接而形成如圖3所示的環狀結構，而管理裝置MM及同步裝置D1~DN兩兩之間可採用習知的RJ45線材連接即可。另外，為了在管理裝置MM及同步裝置D1~DN之間傳遞信號，圖3中的各個網路輸入介面及網路輸出介面的腳位可具有與習知技術不同的定義，而相關細節將在之後另行說明。In short, the management device MM and the synchronization devices D1~DN can be serially connected through the RJ45 input/output interface to form a ring structure as shown in Figure 3, and the management device MM and the synchronization devices D1~DN are connected in series The conventional RJ45 wire can be used for connection. In addition, in order to transmit signals between the management device MM and the synchronization devices D1~DN, the pins of each network input interface and network output interface in Figure 3 may have different definitions from those in the prior art, and the relevant details will be described in It will be explained later.

在本新型的實施例中，管理裝置MM、同步裝置D1、同步裝置Di（

Figure 02_image025
）及同步裝置DN可個別用於執行本新型提出的分散式同步方法，但其個別執行的操作皆有所不同，以下將輔以第一至第四實施例作進一步說明。 In the embodiment of the present invention, the management device MM, the synchronization device D1, and the synchronization device Di (
Figure 02_image025
) And the synchronization device DN can be individually used to execute the distributed synchronization method proposed in the present invention, but the operations performed individually are different. The following will be supplemented with the first to fourth embodiments for further description.

在本新型的第一實施例中，管理裝置MM還可包括處理模組，而此處理模組可包括一處理器（其例如是微處理器、控制器、微控制器、現場可程式閘陣列電路（Field Programmable Gate Array，FPGA）及/或中央處理單元（central processing unit，CPU））及一數位鎖相迴路（digital phase lock loop，DPLL），其中所述處理器可載入特定的軟體、程式碼、應用程式，以協同所述DPLL來實現本新型提出的分散式同步方法，其細節詳述如下。In the first embodiment of the present invention, the management device MM may also include a processing module, and the processing module may include a processor (for example, a microprocessor, a controller, a microcontroller, a field programmable gate array) Circuit (Field Programmable Gate Array, FPGA) and/or central processing unit (CPU)) and a digital phase lock loop (DPLL), wherein the processor can be loaded with specific software, The program code and the application program cooperate with the DPLL to realize the distributed synchronization method proposed by the present invention. The details are as follows.

請參照圖4A，其是依據本新型第一實施例繪示的分散式同步方法流程圖。本實施例的方法可由圖3的管理裝置MM執行，以下即搭配圖3所示的元件說明圖4A各步驟的細節。Please refer to FIG. 4A, which is a flow chart of the distributed synchronization method according to the first embodiment of the present invention. The method of this embodiment can be executed by the management device MM in FIG. 3. The details of each step in FIG. 4A are described below with the components shown in FIG. 3.

首先，在步驟S411中，管理裝置MM可接收PTP封包P1，並解譯PTP封包P1以取得參考1PPS信號（以下以

Figure 02_image009
代稱）、參考頻率信號（以下以
Figure 02_image013
代稱）及參考日時間資訊（以下以
Figure 02_image017
代稱）。 First, in step S411, the management device MM may receive the PTP packet P1, and interpret the PTP packet P1 to obtain a reference 1PPS signal (hereinafter referred to as
Figure 02_image009
Referred to as), reference frequency signal (hereinafter referred to as
Figure 02_image013
Code) and reference date and time information (hereinafter referred to as
Figure 02_image017
Pronoun).

在一實施例中，管理裝置MM例如可透過網路而從圖2所示的GM取得上述PTP封包P1，並可相應地對其進行解譯以取得

Figure 02_image009
、
Figure 02_image013
、
Figure 02_image017
，但可不限於此。在一實施例中，
Figure 02_image013
例如是具有一預設頻率（例如10MHz）的信號，但可不限於此。 In one embodiment, the management device MM can obtain the above-mentioned PTP packet P1 from the GM shown in FIG. 2 through the network, and can interpret it accordingly to obtain
Figure 02_image009
,
Figure 02_image013
,
Figure 02_image017
, But not limited to this. In one embodiment,
Figure 02_image013
For example, it is a signal with a predetermined frequency (for example, 10 MHz), but it is not limited to this.

接著，在步驟S412中，管理裝置MM可透過管理裝置MM的網路輸出介面OM發送參考同步信號

Figure 02_image001
及參考控制信號
Figure 02_image005
至同步裝置D1（即，同步裝置D1~DN中的第1個同步裝置），其中參考同步信號
Figure 02_image001
可包括
Figure 02_image009
、
Figure 02_image013
、
Figure 02_image017
，且參考控制信號
Figure 02_image005
可用於要求同步裝置D1基於參考同步信號
Figure 02_image001
同步於管理裝置MM。在本新型的實施例中，參考控制信號
Figure 02_image005
例如是一種通用非同步收發器（Universal Asynchronous Receiver Transmitter，UART）信號，但可不限於此。 Then, in step S412, the management device MM may send the reference synchronization signal through the network output interface OM of the management device MM
Figure 02_image001
And reference control signal
Figure 02_image005
To the synchronization device D1 (ie, the first synchronization device among the synchronization devices D1~DN), where the reference synchronization signal
Figure 02_image001
Can include
Figure 02_image009
,
Figure 02_image013
,
Figure 02_image017
, And reference control signal
Figure 02_image005
Can be used to request synchronization device D1 based on reference synchronization signal
Figure 02_image001
Synchronize with the management device MM. In the embodiment of the present invention, the reference control signal
Figure 02_image005
For example, it is a Universal Asynchronous Receiver Transmitter (UART) signal, but it is not limited to this.

在一實施例中，管理裝置MM的數位鎖相迴路可將

Figure 02_image009
進行一回送（loopback）操作，而經回收操作後的
Figure 02_image009
可用於與同步裝置DN所傳來的資訊進行比較，以作為管理裝置MM要求同步裝置D1~DN的至少其中之一進行時間/相位校正操作的依據。相關細節將在之後輔以第五實施例另行說明。 In one embodiment, the digital phase-locked loop of the management device MM can change
Figure 02_image009
Perform a loopback operation, and after the recovery operation
Figure 02_image009
It can be used to compare with the information sent from the synchronization device DN as a basis for the management device MM to request at least one of the synchronization devices D1 to D1 to perform a time/phase correction operation. The relevant details will be described later with the aid of the fifth embodiment.

在本新型的第二實施例中，同步裝置D1還可包括同步模組，而此同步模組可包括處理器（其例如是微處理器、控制器、微控制器、FPGA及/或CPU）及數位鎖相迴路，其中所述處理器可載入特定的軟體、程式碼、應用程式，以協同所述數位鎖相迴路來實現本新型提出的分散式同步方法，其細節詳述如下。In the second embodiment of the present invention, the synchronization device D1 may also include a synchronization module, and the synchronization module may include a processor (for example, a microprocessor, a controller, a microcontroller, an FPGA and/or a CPU) And a digital phase-locked loop, where the processor can load specific software, program codes, and application programs to cooperate with the digital phase-locked loop to realize the distributed synchronization method proposed in the present invention. The details are described below.

請參照圖4B，其是依據本新型第二實施例繪示的分散式同步方法流程圖。本實施例的方法可由圖3的同步裝置D1執行，以下即搭配圖3所示的元件說明圖4B各步驟的細節。Please refer to FIG. 4B, which is a flowchart of the distributed synchronization method according to the second embodiment of the present invention. The method of this embodiment can be executed by the synchronization device D1 in FIG. 3. The details of each step in FIG. 4B are described below in conjunction with the components shown in FIG. 3.

首先，在步驟S421中，同步裝置D1可透過同步裝置D1的網路輸入介面I1從管理裝置MM接收參考同步信號

Figure 02_image001
及參考控制信號
Figure 02_image005
。 First, in step S421, the synchronization device D1 can receive the reference synchronization signal from the management device MM through the network input interface I1 of the synchronization device D1
Figure 02_image001
And reference control signal
Figure 02_image005
.

之後，在步驟S422中，同步裝置D1可基於參考同步信號

Figure 02_image001
及參考控制信號
Figure 02_image005
執行與管理裝置MM的同步操作，並相應地產生同步信號
Figure 02_image027
。具體而言，由於參考控制信號
Figure 02_image005
係要求同步裝置D1參考同步信號
Figure 02_image001
同步於管理裝置MM，因此當同步裝置D1接收到參考控制信號
Figure 02_image005
之後，可相應地將管理裝置MM視為主（master）裝置，並以僕（slave）裝置的身分與將自身的頻率、時間、相位同步於管理裝置MM，但可不限於此。 After that, in step S422, the synchronization device D1 may be based on the reference synchronization signal
Figure 02_image001
And reference control signal
Figure 02_image005
Perform synchronization operation with management device MM, and generate synchronization signal accordingly
Figure 02_image027
. Specifically, due to the reference control signal
Figure 02_image005
Department requires synchronization device D1 reference synchronization signal
Figure 02_image001
Synchronous to the management device MM, so when the synchronization device D1 receives the reference control signal
Figure 02_image005
After that, the management device MM can be regarded as a master device accordingly, and its own frequency, time, and phase can be synchronized with the management device MM as a slave device, but it is not limited to this.

因此，在第二實施例中，步驟S422中的同步操作可包括時間同步操作、頻率同步操作及相位同步操作。在一實施例中，同步裝置D1可基於參考同步信號

Figure 02_image001
中的
Figure 02_image013
與管理裝置MM進行頻率同步操作，以相應地產生
Figure 02_image029
（即，同步裝置D1產生的頻率信號，其亦可對應於上述預設頻率（例如10MHz））。再者，同步裝置D1可基於參考同步信號
Figure 02_image001
中的
Figure 02_image017
與管理裝置MM進行時間同步操作，以相應地產生
Figure 02_image031
（即，同步裝置D1產生的日時間資訊）。 Therefore, in the second embodiment, the synchronization operation in step S422 may include a time synchronization operation, a frequency synchronization operation, and a phase synchronization operation. In an embodiment, the synchronization device D1 may be based on the reference synchronization signal
Figure 02_image001
middle
Figure 02_image013
Perform frequency synchronization operation with the management device MM to generate
Figure 02_image029
(That is, the frequency signal generated by the synchronization device D1 may also correspond to the aforementioned preset frequency (for example, 10 MHz)). Furthermore, the synchronization device D1 can be based on the reference synchronization signal
Figure 02_image001
middle
Figure 02_image017
Perform time synchronization operation with the management device MM to generate accordingly
Figure 02_image031
(That is, the time of day information generated by the synchronization device D1).

此外，在第二實施例中，同步裝置D1可基於參考同步信號

Figure 02_image001
中的
Figure 02_image009
與管理裝置MM進行相位同步操作，以相應地產生一特定1PPS信號。之後，同步裝置D1的數位鎖相迴路例如可對此特定1PPS信號執行一回送操作，而同步裝置D1可估計
Figure 02_image009
與（經回送操作後的）特定1PPS信號之間的特定偏移量，並基於此特定偏移量將所述特定1PPS信號校正為
Figure 02_image033
，但本新型可不限於此。在一實施例中，同步裝置D1可另透過10G介面連接於管理裝置MM，並可透過此10G介面將上述特定偏移量回報至管理裝置MM，但可不限於此。 Furthermore, in the second embodiment, the synchronization device D1 may be based on the reference synchronization signal
Figure 02_image001
middle
Figure 02_image009
Perform a phase synchronization operation with the management device MM to generate a specific 1PPS signal accordingly. After that, the digital phase-locked loop of the synchronization device D1 can perform a loopback operation for this specific 1PPS signal, and the synchronization device D1 can estimate
Figure 02_image009
The specific offset between the specific 1PPS signal and the specific 1PPS signal (after the loopback operation), and the specific 1PPS signal is corrected to
Figure 02_image033
, But the invention is not limited to this. In one embodiment, the synchronization device D1 can be connected to the management device MM through a 10G interface, and the specific offset can be reported to the management device MM through this 10G interface, but it is not limited to this.

接著，在步驟S423中，同步裝置D1可透過同步裝置D1的網路輸出介面O1發送同步信號

Figure 02_image027
及控制信號
Figure 02_image035
至同步裝置D2，其中同步信號
Figure 02_image027
可包括
Figure 02_image033
、
Figure 02_image029
、
Figure 02_image031
，而控制信號
Figure 02_image035
可由同步裝置D1所產生，並用於要求同步裝置D2基於同步信號
Figure 02_image027
同步於同步裝置D1。在本新型的實施例中，控制信號
Figure 02_image035
例如是一種UART信號，但可不限於此。 Then, in step S423, the synchronization device D1 may send a synchronization signal through the network output interface O1 of the synchronization device D1
Figure 02_image027
And control signal
Figure 02_image035
To sync device D2, where sync signal
Figure 02_image027
Can include
Figure 02_image033
,
Figure 02_image029
,
Figure 02_image031
, And the control signal
Figure 02_image035
Can be generated by the synchronization device D1 and used to request the synchronization device D2 to be based on the synchronization signal
Figure 02_image027
Synchronize with the synchronization device D1. In the embodiment of the present invention, the control signal
Figure 02_image035
For example, it is a UART signal, but it is not limited to this.

在本新型的第三實施例中，當

Figure 02_image025
時，同步裝置Di還可包括同步模組，而此同步模組可包括處理器及數位鎖相迴路，其中所述處理器可載入特定的軟體、程式碼、應用程式，以協同所述數位鎖相迴路來實現本新型提出的分散式同步方法，其細節詳述如下。 In the third embodiment of the present invention, when
Figure 02_image025
When the synchronization device Di can also include a synchronization module, and the synchronization module can include a processor and a digital phase-locked loop, wherein the processor can load specific software, program codes, and application programs to cooperate with the digital The phase-locked loop is used to realize the distributed synchronization method proposed by the present invention. The details are described in detail as follows.

請參照圖4C，其是依據本新型第三實施例繪示的分散式同步方法流程圖。本實施例的方法可由圖3的同步裝置Di（

Figure 02_image025
）執行，以下即搭配圖3所示的元件說明圖4C各步驟的細節。 Please refer to FIG. 4C, which is a flowchart of the distributed synchronization method according to the third embodiment of the present invention. The method of this embodiment can be used by the synchronization device Di (
Figure 02_image025
) Execution, the details of each step in Figure 4C will be described below with the components shown in Figure 3.

首先，在步驟S431中，同步裝置Di可透過同步裝置Di的網路輸入介面Ii從第i-1個同步裝置接收同步信號

Figure 02_image037
及控制信號
Figure 02_image039
，其中控制信號
Figure 02_image039
可由所述第i-1個同步裝置所產生，並用於要求同步裝置Di基於同步信號
Figure 02_image037
同步於所述第i-1個同步裝置。在本新型的實施例中，控制信號
Figure 02_image039
例如是一種UART信號，但可不限於此。 First, in step S431, the synchronization device Di can receive a synchronization signal from the i-1th synchronization device through the network input interface Ii of the synchronization device Di
Figure 02_image037
And control signal
Figure 02_image039
, Where the control signal
Figure 02_image039
It can be generated by the i-1th synchronization device and used to request the synchronization device Di to be based on a synchronization signal
Figure 02_image037
Synchronize with the i-1th synchronization device. In the embodiment of the present invention, the control signal
Figure 02_image039
For example, it is a UART signal, but it is not limited to this.

此外，同步信號

Figure 02_image037
可包括
Figure 02_image041
、
Figure 02_image043
、
Figure 02_image045
，其中
Figure 02_image041
為所述第i-1個同步裝置產生的1PPS信號，
Figure 02_image043
為所述第i-1個同步裝置產生的頻率信號（其亦可具有上述預設頻率（例如10MHz）），
Figure 02_image045
為所述第i-1個同步裝置產生的日時間資訊，但可不限於此。 In addition, the synchronization signal
Figure 02_image037
Can include
Figure 02_image041
,
Figure 02_image043
,
Figure 02_image045
,among them
Figure 02_image041
Is the 1PPS signal generated by the i-1th synchronization device,
Figure 02_image043
Is the frequency signal generated by the i-1th synchronization device (which may also have the above-mentioned preset frequency (for example, 10MHz)),
Figure 02_image045
It is the time of day information generated by the i-1th synchronization device, but it is not limited to this.

之後，在步驟S432中，同步裝置Di可基於同步信號

Figure 02_image037
及控制信號
Figure 02_image039
執行與所述第i-1個同步裝置的同步操作，並相應地產生同步信號
Figure 02_image047
。具體而言，由於控制信號
Figure 02_image039
係要求同步裝置Di基於同步信號
Figure 02_image037
同步於所述第i-1個同步裝置，因此當同步裝置Di接收到控制信號
Figure 02_image039
之後，可相應地將所述第i-1個同步裝置視為主裝置，並以僕裝置的身分與將自身的頻率、時間、相位同步於所述第i-1個同步裝置，但可不限於此。 After that, in step S432, the synchronization device Di may be based on the synchronization signal
Figure 02_image037
And control signal
Figure 02_image039
Perform a synchronization operation with the i-1th synchronization device, and generate a synchronization signal accordingly
Figure 02_image047
. Specifically, due to the control signal
Figure 02_image039
Department requires synchronization device Di based on synchronization signal
Figure 02_image037
Is synchronized with the i-1th synchronization device, so when the synchronization device Di receives the control signal
Figure 02_image039
After that, the i-1th synchronization device can be regarded as the master device accordingly, and its own frequency, time, and phase can be synchronized with the i-1th synchronization device as a slave device, but it is not limited to this.

因此，在第三實施例中，步驟S432中的同步操作可包括時間同步操作、頻率同步操作及相位同步操作。在一實施例中，同步裝置Di可基於同步信號

Figure 02_image037
中的
Figure 02_image043
與所述第i-1個同步裝置進行頻率同步操作，以相應地產生
Figure 02_image049
（即，同步裝置Di產生的頻率信號，其亦可對應於上述預設頻率（例如10MHz））。再者，同步裝置Di可基於同步信號
Figure 02_image037
中的
Figure 02_image045
與所述第i-1個同步裝置進行時間同步操作，以相應地產生
Figure 02_image051
（即，同步裝置Di產生的日時間資訊）。 Therefore, in the third embodiment, the synchronization operation in step S432 may include a time synchronization operation, a frequency synchronization operation, and a phase synchronization operation. In an embodiment, the synchronization device Di may be based on a synchronization signal
Figure 02_image037
middle
Figure 02_image043
Perform frequency synchronization operation with the i-1th synchronization device to generate
Figure 02_image049
(That is, the frequency signal generated by the synchronization device Di may also correspond to the aforementioned preset frequency (for example, 10 MHz)). Furthermore, the synchronization device Di may be based on a synchronization signal
Figure 02_image037
middle
Figure 02_image045
Perform a time synchronization operation with the i-1th synchronization device to generate
Figure 02_image051
(That is, the time of day information generated by the synchronization device Di).

此外，在第三實施例中，同步裝置Di可基於同步信號

Figure 02_image037
中的
Figure 02_image041
與所述第i-1個同步裝置進行相位同步操作，以相應地產生一特定1PPS信號。之後，同步裝置Di的數位鎖相迴路例如可對此特定1PPS信號執行一回送操作，而同步裝置Di可估計
Figure 02_image041
與（經回送操作後的）特定1PPS信號之間的特定偏移量，並基於此特定偏移量將所述特定1PPS信號校正為
Figure 02_image053
，但本新型可不限於此。在一實施例中，同步裝置Di可另透過10G介面連接於管理裝置MM，並可透過此10G介面將上述特定偏移量回報至管理裝置MM，但可不限於此。 Furthermore, in the third embodiment, the synchronization device Di may be based on the synchronization signal
Figure 02_image037
middle
Figure 02_image041
Perform a phase synchronization operation with the i-1th synchronization device to generate a specific 1PPS signal accordingly. Afterwards, the digital phase-locked loop of the synchronization device Di can perform a loopback operation for this specific 1PPS signal, and the synchronization device Di can estimate
Figure 02_image041
The specific offset between the specific 1PPS signal and the specific 1PPS signal (after the loopback operation), and the specific 1PPS signal is corrected to
Figure 02_image053
, But the invention is not limited to this. In one embodiment, the synchronization device Di can be connected to the management device MM through a 10G interface, and the specific offset can be reported to the management device MM through this 10G interface, but it is not limited to this.

接著，在步驟S433中，同步裝置Di可透過同步裝置Di的網路輸出介面Oi發送同步信號

Figure 02_image047
及控制信號
Figure 02_image055
至第i+1個同步裝置，其中同步信號
Figure 02_image047
可包括
Figure 02_image053
、
Figure 02_image057
、
Figure 02_image059
，而控制信號
Figure 02_image055
可由同步裝置Di所產生，並用於要求所述第i+1個同步裝置基於同步信號
Figure 02_image047
同步於同步裝置Di。在本新型的實施例中，控制信號
Figure 02_image055
例如是一種UART信號，但可不限於此。 Then, in step S433, the synchronization device Di may send a synchronization signal through the network output interface Oi of the synchronization device Di
Figure 02_image047
And control signal
Figure 02_image055
To the i+1th synchronization device, where the synchronization signal
Figure 02_image047
Can include
Figure 02_image053
,
Figure 02_image057
,
Figure 02_image059
, And the control signal
Figure 02_image055
Can be generated by the synchronization device Di, and used to require the i+1th synchronization device to be based on a synchronization signal
Figure 02_image047
Synchronous to the synchronization device Di. In the embodiment of the present invention, the control signal
Figure 02_image055
For example, it is a UART signal, but it is not limited to this.

在本新型的第四實施例中，同步裝置DN還可包括同步模組，而此同步模組可包括處理器及數位鎖相迴路，其中所述處理器可載入特定的軟體、程式碼、應用程式，以協同所述數位鎖相迴路來實現本新型提出的分散式同步方法，其細節詳述如下。In the fourth embodiment of the present invention, the synchronization device DN may also include a synchronization module, and the synchronization module may include a processor and a digital phase-locked loop, wherein the processor can load specific software, code, The application program cooperates with the digital phase-locked loop to realize the distributed synchronization method proposed by the present invention, the details of which are detailed as follows.

請參照圖4D，其是依據本新型第四實施例繪示的分散式同步方法流程圖。本實施例的方法可由圖3的同步裝置DN執行，以下即搭配圖3所示的元件說明圖4D各步驟的細節。Please refer to FIG. 4D, which is a flowchart of the distributed synchronization method according to the fourth embodiment of the present invention. The method of this embodiment can be executed by the synchronization device DN in FIG. 3. The details of each step in FIG. 4D will be described below with the components shown in FIG. 3.

首先，在步驟S441中，同步裝置DN可透過同步裝置DN的網路輸入介面IN從第N-1個同步裝置接收同步信號

Figure 02_image061
及控制信號
Figure 02_image063
，其中控制信號
Figure 02_image063
可由所述第N-1個同步裝置所產生，並用於要求同步裝置DN基於同步信號
Figure 02_image061
同步於所述第N-1個同步裝置。在本新型的實施例中，控制信號
Figure 02_image063
例如是一種UART信號，但可不限於此。 First, in step S441, the synchronization device DN may receive a synchronization signal from the N-1th synchronization device through the network input interface IN of the synchronization device DN
Figure 02_image061
And control signal
Figure 02_image063
, Where the control signal
Figure 02_image063
It can be generated by the N-1th synchronization device and used to request the synchronization device DN to be based on a synchronization signal
Figure 02_image061
Synchronize with the N-1th synchronization device. In the embodiment of the present invention, the control signal
Figure 02_image063
For example, it is a UART signal, but it is not limited to this.

此外，同步信號

Figure 02_image061
可包括
Figure 02_image065
、
Figure 02_image067
、
Figure 02_image069
，其中
Figure 02_image065
為所述第N-1個同步裝置產生的1PPS信號，
Figure 02_image067
為所述第N-1個同步裝置產生的頻率信號（其亦可具有上述預設頻率（例如10MHz）），
Figure 02_image069
為所述第N-1個同步裝置產生的日時間資訊，但可不限於此。 In addition, the synchronization signal
Figure 02_image061
Can include
Figure 02_image065
,
Figure 02_image067
,
Figure 02_image069
,among them
Figure 02_image065
Is the 1PPS signal generated by the N-1th synchronization device,
Figure 02_image067
Is the frequency signal generated by the N-1th synchronization device (which may also have the aforementioned preset frequency (for example, 10MHz)),
Figure 02_image069
It is the time of day information generated by the N-1th synchronization device, but it is not limited to this.

之後，在步驟S442中，同步裝置DN可基於同步信號

Figure 02_image061
及控制信號
Figure 02_image063
執行與所述第N-1個同步裝置的同步操作，並相應地產生同步信號
Figure 02_image003
。具體而言，由於控制信號
Figure 02_image063
係要求同步裝置DN基於同步信號
Figure 02_image061
同步於所述第N-1個同步裝置，因此當同步裝置DN接收到控制信號
Figure 02_image063
之後，可相應地將所述第N-1個同步裝置視為主裝置，並以僕裝置的身分與將自身的頻率、時間、相位同步於所述第N-1個同步裝置，但可不限於此。 After that, in step S442, the synchronization device DN may be based on the synchronization signal
Figure 02_image061
And control signal
Figure 02_image063
Perform a synchronization operation with the N-1th synchronization device, and generate a synchronization signal accordingly
Figure 02_image003
. Specifically, due to the control signal
Figure 02_image063
The system requires the synchronization device DN to be based on the synchronization signal
Figure 02_image061
Synchronize to the N-1th synchronization device, so when the synchronization device DN receives the control signal
Figure 02_image063
After that, the N-1th synchronization device can be regarded as the master device accordingly, and its own frequency, time, and phase can be synchronized with the N-1th synchronization device as a slave device, but it is not limited to this.

因此，在第四實施例中，步驟S442中的同步操作可包括時間同步操作、頻率同步操作及相位同步操作。在一實施例中，同步裝置DN可基於同步信號

Figure 02_image061
中的
Figure 02_image067
與所述第N-1個同步裝置進行頻率同步操作，以相應地產生
Figure 02_image015
（即，同步裝置DN產生的頻率信號，其亦可對應於上述預設頻率（例如10MHz））。再者，同步裝置DN可基於同步信號
Figure 02_image061
中的
Figure 02_image069
與所述第N-1個同步裝置進行時間同步操作，以相應地產生
Figure 02_image019
（即，同步裝置DN產生的日時間資訊）。 Therefore, in the fourth embodiment, the synchronization operation in step S442 may include a time synchronization operation, a frequency synchronization operation, and a phase synchronization operation. In an embodiment, the synchronization device DN may be based on a synchronization signal
Figure 02_image061
middle
Figure 02_image067
Perform frequency synchronization operation with the N-1th synchronization device to generate
Figure 02_image015
(That is, the frequency signal generated by the synchronization device DN may also correspond to the aforementioned preset frequency (for example, 10 MHz)). Furthermore, the synchronization device DN can be based on a synchronization signal
Figure 02_image061
middle
Figure 02_image069
Perform a time synchronization operation with the N-1th synchronization device to generate
Figure 02_image019
(That is, the time of day information generated by the synchronization device DN).

此外，在第四實施例中，同步裝置DN可基於同步信號

Figure 02_image061
中的
Figure 02_image065
與所述第N-1個同步裝置進行相位同步操作，以相應地產生一特定1PPS信號。之後，同步裝置DN的數位鎖相迴路例如可對此特定1PPS信號執行一回送操作，而同步裝置DN可估計
Figure 02_image065
與（經回送操作後的）特定1PPS信號之間的特定偏移量，並基於此特定偏移量將所述特定1PPS信號校正為
Figure 02_image011
，但本新型可不限於此。在一實施例中，同步裝置DN可另透過10G介面連接於管理裝置MM，並可透過此10G介面將上述特定偏移量回報至管理裝置MM，但可不限於此。 Furthermore, in the fourth embodiment, the synchronization device DN may be based on the synchronization signal
Figure 02_image061
middle
Figure 02_image065
Perform a phase synchronization operation with the N-1th synchronization device to generate a specific 1PPS signal accordingly. After that, the digital phase-locked loop of the synchronization device DN can perform a loopback operation for this specific 1PPS signal, and the synchronization device DN can estimate
Figure 02_image065
The specific offset between the specific 1PPS signal and the specific 1PPS signal (after the loopback operation), and the specific 1PPS signal is corrected to
Figure 02_image011
, But the invention is not limited to this. In one embodiment, the synchronization device DN can be connected to the management device MM via a 10G interface, and the specific offset can be reported to the management device MM via this 10G interface, but it is not limited to this.

接著，在步驟S443中，同步裝置DN可透過同步裝置DN的網路輸出介面ON發送同步信號

Figure 02_image003
及控制信號
Figure 02_image007
至管理裝置MM，其中同步信號
Figure 02_image003
可包括
Figure 02_image011
、
Figure 02_image015
、
Figure 02_image019
，而控制信號
Figure 02_image007
可由同步裝置DN所產生，並用於通知管理裝置MM同步裝置D1~DN已完成同步，但可不限於此。在本新型的實施例中，控制信號
Figure 02_image007
例如是一種UART信號，但可不限於此。 Then, in step S443, the synchronization device DN can send a synchronization signal through the network output interface ON of the synchronization device DN
Figure 02_image003
And control signal
Figure 02_image007
To the management device MM, where the synchronization signal
Figure 02_image003
Can include
Figure 02_image011
,
Figure 02_image015
,
Figure 02_image019
, And the control signal
Figure 02_image007
It can be generated by the synchronization device DN and used to notify the management device MM that the synchronization devices D1 to DN have completed synchronization, but it is not limited to this. In the embodiment of the present invention, the control signal
Figure 02_image007
For example, it is a UART signal, but it is not limited to this.

在第五實施例中，管理裝置MM可網路輸入介面IM從同步裝置DN接同步信號

Figure 02_image003
及控制信號
Figure 02_image007
。之後，管理裝置MM即可估計（經回送操作的）
Figure 02_image009
及
Figure 02_image011
之間的相位偏移量，並判斷此相位偏移量是否大於一偏移量門限值。 In the fifth embodiment, the management device MM can receive the synchronization signal from the synchronization device DN via the network input interface IM
Figure 02_image003
And control signal
Figure 02_image007
. After that, the management device MM can estimate (via loopback operation)
Figure 02_image009
and
Figure 02_image011
And determine whether the phase offset is greater than an offset threshold.

在一實施例中，反應於判定所述相位偏移量大於偏移量門限值，管理裝置MM可依據相位偏移量與偏移量門限值之間的差值控制同步裝置D1~DN的至少其中之一進行相位校正操作。In one embodiment, in response to determining that the phase offset is greater than the offset threshold, the management device MM may control at least the synchronization devices D1 to DN according to the difference between the phase offset and the offset threshold. One of them performs phase correction operations.

舉例而言，假設

Figure 02_image009
及
Figure 02_image011
之間的相位偏移量為+7ns，而所述偏移量門限值為5ns。在此情況下，管理裝置MM例如可基於+7ns與5ns之間的差值（即，+2ns）來控制同步裝置D1~DN的至少其中之一進行相位校正操作。例如，管理裝置MM可要求同步裝置D1~DN的其中之二個別將所產生的1PPS信號調慢1ns（即，共調慢2ns），以實現上述相位校正操作，但可不限於此。 For example, suppose
Figure 02_image009
and
Figure 02_image011
The phase offset between is +7ns, and the offset threshold is 5ns. In this case, the management device MM may, for example, control at least one of the synchronization devices D1 to DN to perform a phase correction operation based on the difference between +7ns and 5ns (ie, +2ns). For example, the management device MM may require two of the synchronization devices D1 to DN to individually slow down the generated 1PPS signal by 1 ns (ie, a total of 2 ns) to achieve the above phase correction operation, but it is not limited to this.

由上可知，透過本新型提出的分散式同步系統及方法，可在管理裝置MM不具備IEEE 1588及SyncE功能的情況下，以較低的成本實現同步裝置D1~DN的同步。並且，相較於圖2所示的二層式DDC架構，圖3的單層式DDC架構可達到較高的同步精確度。It can be seen from the above that, through the distributed synchronization system and method proposed by the present invention, the synchronization of the synchronization devices D1 to DN can be realized at a lower cost when the management device MM does not have IEEE 1588 and SyncE functions. Moreover, compared with the two-layer DDC architecture shown in FIG. 2, the single-layer DDC architecture of FIG. 3 can achieve higher synchronization accuracy.

請參照圖5，其是依據本新型之一實施例繪示的同步裝置的資料平面及控制平面的示意圖。在圖5中，對於各個同步裝置Di（

Figure 02_image023
）而言，其可包括資料平面DPi及控制平面CPi，其中資料平面DPi可包括100G及400G的介面，而控制平面CPi可包括網路輸入介面Ii、網路輸出介面Oi及10G介面Eth，但可不限於此。 Please refer to FIG. 5, which is a schematic diagram of the data plane and the control plane of the synchronization device according to an embodiment of the present invention. In Figure 5, for each synchronization device Di(
Figure 02_image023
), it can include a data plane DPi and a control plane CPi, where the data plane DPi can include 100G and 400G interfaces, and the control plane CPi can include a network input interface Ii, a network output interface Oi, and a 10G interface Eth, but It is not limited to this.

在本實施例中，由於同步裝置Di係透過屬於控制平面CPi中的網路輸入介面Ii及網路輸出介面Oi來接收/發送同步信號及控制信號，而非透過屬於資料平面DPi的100G及400G的介面（即，具有較高傳輸能力）來接收/發送資料量較少的同步信號及控制信號，因此可讓同步裝置Di的硬體資源得到較為適當的利用。In this embodiment, because the synchronization device Di receives/sends synchronization signals and control signals through the network input interface Ii and the network output interface Oi belonging to the control plane CPi, instead of the 100G and 400G belonging to the data plane DPi The interface (that is, with higher transmission capacity) to receive/send synchronization signals and control signals with a small amount of data, so that the hardware resources of the synchronization device Di can be more appropriately used.

為使本案的概念更易於理解，以下另輔以圖6說明本案與習知技術的差異。請參照圖6，其是依據圖2及圖3繪示的技術比較圖。在圖6中，DDC系統600例如相同於圖2的DDC系統200，而DDC系統610例如是圖3的分散式同步系統300的一種實施態樣（即，N為5時的態樣）。In order to make the concept of this case easier to understand, Figure 6 is supplemented below to illustrate the difference between this case and the conventional technology. Please refer to FIG. 6, which is based on the technology comparison diagram shown in FIGS. 2 and 3. In FIG. 6, the DDC system 600 is, for example, the same as the DDC system 200 of FIG. 2, and the DDC system 610 is, for example, an implementation aspect of the distributed synchronization system 300 of FIG. 3 (ie, the aspect when N is 5).

如先前所提及的，DDC系統600中的管理交換器及各個LC係個別為一邊界時鐘。然而，在實現本新型提出的分散式同步方法之後，DDC系統610中的管理裝置MM及同步裝置D1~D5個別可理解為一普通時鐘（ordinary clock，OC），因而可體現與DDC系統600不同的運作方式/概念。As mentioned earlier, the management switch and each LC in the DDC system 600 are respectively a boundary clock. However, after implementing the distributed synchronization method proposed by the present invention, the management device MM and the synchronization devices D1~D5 in the DDC system 610 can be understood as an ordinary clock (OC), and thus can be embodied differently from the DDC system 600 How it works/concept.

此外，如先前所提及的，為了讓圖3中的各個網路輸入介面及網路輸出介面可用於傳遞日時間資訊（例如

Figure 02_image071
）、控制信號（例如
Figure 02_image073
）、1PPS信號（例如
Figure 02_image075
）及頻率信號（例如
Figure 02_image077
），各網路輸入介面及網路輸出介面的腳位可具有與習知RJ45不同的定義，以下將作進一步說明。 In addition, as mentioned earlier, in order to allow each network input interface and network output interface in Figure 3 to be used to transmit time of day information (such as
Figure 02_image071
), control signals (e.g.
Figure 02_image073
), 1PPS signal (for example
Figure 02_image075
) And frequency signals (for example
Figure 02_image077
), the pins of each network input interface and network output interface may have a different definition from the conventional RJ45, which will be further explained below.

在本新型的實施例中，所提及的日時間資訊、控制信號、1PPS信號及頻率信號個別可為一差動信號。在此情況下，每個1PPS信號（例如

Figure 02_image075
）可理解為包括1PPS-及1PPS+等信號成分；每個頻率信號（例如是對應於10MHz的
Figure 02_image077
）可理解為包括10M-及10M+等信號成分；每個控制信號（例如
Figure 02_image073
）可理解為包括UART-及UART+等信號成分；每個日時間資訊（例如
Figure 02_image071
）可理解為包括ToD-及ToD+等信號成分，但可不限於此。 In the embodiment of the present invention, the mentioned time of day information, control signal, 1PPS signal and frequency signal may be a differential signal individually. In this case, each 1PPS signal (e.g.
Figure 02_image075
) Can be understood as including signal components such as 1PPS- and 1PPS+; each frequency signal (for example, corresponding to 10MHz
Figure 02_image077
) Can be understood as including signal components such as 10M- and 10M+; each control signal (for example
Figure 02_image073
) Can be understood as including signal components such as UART- and UART+; time information of each day (for example
Figure 02_image071
) Can be understood as including signal components such as ToD- and ToD+, but not limited to this.

請參照圖7，其是依據本新型之一實施例繪示的習知RJ45介面腳位表與本案RJ45介面腳位表的比較圖。如圖7所示，在習知RJ45介面腳位表710中共有編號1至編號8等8個腳位，其中編號1及2（以下將編號1及2的腳位稱為第一腳位）係保留（reserved）腳位，編號3係用於傳送/接收1PPS-，編號4為接地端腳位，編號5為使用者定義（user-defined）腳位（以下將編號4及5的腳位稱為第二腳位），編號6用於傳送/接收1PPS+，編號7用於傳送/接收ToD-，編號8用於傳送/接收ToD+。Please refer to FIG. 7, which is a comparison diagram of the conventional RJ45 interface pin table according to an embodiment of the present invention and the RJ45 interface pin table of this case. As shown in Figure 7, in the conventional RJ45 interface pin table 710, there are 8 pins numbered from 1 to 8 in total, of which numbers 1 and 2 (the pins numbered 1 and 2 are referred to as the first pin below) It is reserved (reserved) pin, number 3 is used to transmit/receive 1PPS-, number 4 is ground terminal pin, number 5 is user-defined pin (the pins numbered 4 and 5 will be used below Called the second pin), number 6 is used to transmit/receive 1PPS+, number 7 is used to transmit/receive ToD-, and number 8 is used to transmit/receive ToD+.

然而，在本案的RJ45介面腳位表720中，編號1改為用於傳送/接收10M-，編號2改為用於傳送/接收10M+（即，上述第一腳位改為用於傳送/接收頻率信號）。另外，編號4改為用於傳送/接收UART-，而編號5則改為用於傳送/接收UART+（即，上述第二腳位改為用於傳送/接收控制信號）。其餘的編號3、6、7、8的功能則未更動。However, in the RJ45 interface pin table 720 in this case, the number 1 is changed to transmit/receive 10M-, and the number 2 is changed to transmit/receive 10M+ (that is, the first pin above is changed to transmit/receive Frequency signal). In addition, No. 4 is changed to be used for transmitting/receiving UART-, and No. 5 is changed to be used for transmitting/receiving UART+ (that is, the second pin above is changed to be used for transmitting/receiving control signals). The functions of the remaining numbers 3, 6, 7, and 8 remain unchanged.

在此情況下，當圖3中的任一網路輸入介面採用RJ45介面腳位表720時，此網路輸入介面即可透過編號1~8的腳位分別接收10M-、10M+、1PPS-、UART-、UART+、1PPS+、ToD-及ToD+等信號成分，但可不限於此。換言之，編號1、2可理解為第一輸入腳位，編號3、6可理解為1PPS信號輸入腳位，編號4、5可理解為第二輸入腳位，編號7、8可理解為日時間信號輸入腳位，但可不限於此。In this case, when any of the network input interfaces in Figure 3 uses the RJ45 interface pin table 720, the network input interface can receive 10M-, 10M+, 1PPS-, and 1PPS- through the pins numbered 1~8. Signal components such as UART-, UART+, 1PPS+, ToD- and ToD+, but not limited to this. In other words, numbers 1 and 2 can be understood as the first input pin, numbers 3 and 6 can be understood as the 1PPS signal input pin, numbers 4 and 5 can be understood as the second input pin, and numbers 7, 8 can be understood as the time of day Signal input pin, but not limited to this.

另一方面，當圖3中的任一網路輸出介面採用RJ45介面腳位表720時，此網路輸入介面即可透過編號1~8的腳位分別傳送10M-、10M+、1PPS-、UART-、UART+、1PPS+、ToD-及ToD+等信號成分，但可不限於此。換言之，編號1、2可理解為第一輸出腳位，編號3、6可理解為1PPS信號輸出腳位，編號4、5可理解為第二輸出腳位，編號7、8可理解為日時間信號輸出腳位，但可不限於此。On the other hand, when any network output interface in Figure 3 adopts RJ45 interface pin table 720, this network input interface can transmit 10M-, 10M+, 1PPS-, UART through the pins numbered 1~8, respectively -, UART+, 1PPS+, ToD- and ToD+ and other signal components, but not limited to this. In other words, numbers 1 and 2 can be understood as the first output pin, numbers 3 and 6 can be understood as the 1PPS signal output pin, numbers 4 and 5 can be understood as the second output pin, and numbers 7, 8 can be understood as the time of day Signal output pin, but not limited to this.

請參照圖8，其是依據本新型之一實施例繪示的同步裝置的功能方塊圖。在圖8中，同步裝置Di可包括網路輸入介面Ii、網路輸出介面Oi及同步模組SNi，其中網路輸入介面Ii、網路輸出介面Oi可個別採用圖7所示的RJ45介面腳位表720。Please refer to FIG. 8, which is a functional block diagram of a synchronization device according to an embodiment of the present invention. In FIG. 8, the synchronization device Di may include a network input interface Ii, a network output interface Oi, and a synchronization module SNi. The network input interface Ii and the network output interface Oi can individually use the RJ45 interface pins shown in FIG. 7 Bit table 720.

在此情況下，網路輸入介面Ii可用於接收來自前一級裝置的

Figure 02_image079
、
Figure 02_image081
、
Figure 02_image083
及控制信號
Figure 02_image039
，而網路輸出介面Oi則可用於傳送同步裝置Di產生的
Figure 02_image085
、
Figure 02_image049
、
Figure 02_image087
及控制信號
Figure 02_image055
至下一級裝置。舉例而言，若同步裝置Di為同步裝置D1（即，i為1），則網路輸入介面Ii可用於接收來自圖3中管理裝置MM（即，同步裝置D1的前一級裝置）的
Figure 02_image009
、
Figure 02_image013
、
Figure 02_image017
及參考控制信號
Figure 02_image005
，而網路輸出介面Oi則可用於傳送
Figure 02_image033
、
Figure 02_image029
、
Figure 02_image031
及控制信號
Figure 02_image035
至同步裝置D2（即，同步裝置D1的下一級裝置）。舉另一例而言，若同步裝置Di為同步裝置DN（即，i為N），則網路輸入介面Ii可用於接收來自圖3中第N-1個同步裝置（即，同步裝置DN的前一級裝置）的
Figure 02_image089
、
Figure 02_image091
、
Figure 02_image093
及控制信號
Figure 02_image063
，而網路輸出介面Oi則可用於傳送
Figure 02_image011
、
Figure 02_image015
、
Figure 02_image019
及控制信號
Figure 02_image007
至管理裝置MM（即，同步裝置DN的下一級裝置）。 In this case, the network input interface Ii can be used to receive data from the previous device
Figure 02_image079
,
Figure 02_image081
,
Figure 02_image083
And control signal
Figure 02_image039
, And the network output interface Oi can be used to send the synchronization device Di generated
Figure 02_image085
,
Figure 02_image049
,
Figure 02_image087
And control signal
Figure 02_image055
Go to the next device. For example, if the synchronization device Di is the synchronization device D1 (i.e., i is 1), the network input interface Ii can be used to receive information from the management device MM in FIG. 3 (that is, the previous level device of the synchronization device D1)
Figure 02_image009
,
Figure 02_image013
,
Figure 02_image017
And reference control signal
Figure 02_image005
, And the network output interface Oi can be used to send
Figure 02_image033
,
Figure 02_image029
,
Figure 02_image031
And control signal
Figure 02_image035
To the synchronization device D2 (ie, the next level device of the synchronization device D1). For another example, if the synchronization device Di is the synchronization device DN (i.e., i is N), the network input interface Ii can be used to receive the synchronization device from the N-1th synchronization device in FIG. 3 (ie, the front of the synchronization device DN). Level 1 device)
Figure 02_image089
,
Figure 02_image091
,
Figure 02_image093
And control signal
Figure 02_image063
, And the network output interface Oi can be used to send
Figure 02_image011
,
Figure 02_image015
,
Figure 02_image019
And control signal
Figure 02_image007
To the management device MM (ie, the next-level device of the synchronization device DN).

另外，如先前所提及的，網路輸入介面Ii所接收的控制信號

Figure 02_image039
、
Figure 02_image041
、
Figure 02_image043
、
Figure 02_image045
個別可為一差動信號，即圖8上半部雙虛線處所示的10M-/+、1PPS-/+、UART-/+及ToD-/+。 In addition, as mentioned earlier, the control signal received by the network input interface Ii
Figure 02_image039
,
Figure 02_image041
,
Figure 02_image043
,
Figure 02_image045
Each can be a differential signal, that is, 10M-/+, 1PPS-/+, UART-/+, and ToD-/+ shown in the double dotted line in the upper half of FIG.

在一實施例中，同步模組SNi可基於控制信號

Figure 02_image039
、
Figure 02_image041
、
Figure 02_image043
、
Figure 02_image045
執行與前一級裝置的同步操作，並相應地產生同步信號
Figure 02_image047
及控制信號
Figure 02_image055
。之後，同步模組SNi可透過網路輸出介面Oi發送同步信號
Figure 02_image047
及控制信號
Figure 02_image055
至下一級裝置。同步模組SNi所執行操作的細節可參考先前實施例中有關於同步裝置D1~DN的說明，於此不另贅述。 In one embodiment, the synchronization module SNi can be based on the control signal
Figure 02_image039
,
Figure 02_image041
,
Figure 02_image043
,
Figure 02_image045
Perform synchronization operation with the previous level device and generate synchronization signal accordingly
Figure 02_image047
And control signal
Figure 02_image055
. After that, the synchronization module SNi can send synchronization signals through the network output interface Oi
Figure 02_image047
And control signal
Figure 02_image055
Go to the next device. For details of the operations performed by the synchronization module SNi, please refer to the description of the synchronization devices D1 to DN in the previous embodiment, which will not be repeated here.

如圖8所示，同步模組SNi可包括差動至單端橋接器DSi、數位鎖相迴路LLi、處理器Pi及單端至差動橋接器SDi。差動至單端橋接器DSi可耦接於網路輸入介面Ii，並用於將

Figure 02_image043
、
Figure 02_image041
、控制信號
Figure 02_image039
及
Figure 02_image045
分別轉換為對應的第一單端信號
Figure 02_image095
、第二單端信號
Figure 02_image097
、第三單端信號
Figure 02_image099
及第四單端信號
Figure 02_image101
。 As shown in FIG. 8, the synchronization module SNi may include a differential to single-ended bridge DSi, a digital phase-locked loop LLi, a processor Pi, and a single-ended to differential bridge SDi. The differential to single-ended bridge DSi can be coupled to the network input interface Ii and used to connect
Figure 02_image043
,
Figure 02_image041
,control signal
Figure 02_image039
and
Figure 02_image045
Respectively converted to the corresponding first single-ended signal
Figure 02_image095
, The second single-ended signal
Figure 02_image097
, The third single-ended signal
Figure 02_image099
And the fourth single-ended signal
Figure 02_image101
.

在一實施例中，由於硬體上的特性，控制信號

Figure 02_image039
及
Figure 02_image045
等二個差動信號會彼此綁定（bundle），因此差動至單端橋接器DSi可在接收綁定的控制信號
Figure 02_image039
及
Figure 02_image045
之後，將此二差動信號分離，並個別轉換為對應的單端信號。 In one embodiment, due to the characteristics of the hardware, the control signal
Figure 02_image039
and
Figure 02_image045
Wait for the two differential signals to be bundled with each other, so the differential to single-ended bridge DSi can receive the bundled control signal
Figure 02_image039
and
Figure 02_image045
After that, the two differential signals are separated and converted into corresponding single-ended signals individually.

在此情況下，差動至單端橋接器DSi可包括RS422埠DSi1及UART DSi2。RS422埠DSi1可耦接於上述第二輸入腳位（即，網路輸入介面Ii的編號4、5）及上述日時間信號輸入腳位（即，網路輸入介面Ii的編號7、8），並用於接收彼此綁定的該參考控制信號及

Figure 02_image017
。另外，UART DSi2可耦接於RS422埠DSi1及處理器Pi，並用於分離控制信號
Figure 02_image039
及
Figure 02_image045
，並將控制信號
Figure 02_image039
及
Figure 02_image045
分別轉換成對應的第三單端信號
Figure 02_image099
及第四單端信號
Figure 02_image101
。 In this case, the differential to single-ended bridge DSi may include the RS422 port DSi1 and UART DSi2. The RS422 port DSi1 can be coupled to the above-mentioned second input pin (ie, the network input interface Ii No. 4, 5) and the above-mentioned time of day signal input pin (ie, the network input interface Ii No. 7, 8), And used to receive the reference control signal bound to each other and
Figure 02_image017
. In addition, UART DSi2 can be coupled to RS422 port DSi1 and processor Pi, and used to separate control signals
Figure 02_image039
and
Figure 02_image045
, And the control signal
Figure 02_image039
and
Figure 02_image045
Converted into the corresponding third single-ended signal respectively
Figure 02_image099
And the fourth single-ended signal
Figure 02_image101
.

數位鎖相迴路LLi耦接於差動至單端橋接器DSi，並接收分別對應於

Figure 02_image043
、
Figure 02_image041
的第一單端信號
Figure 02_image095
及第二單端信號
Figure 02_image097
。 The digital phase locked loop LLi is coupled to the differential-to-single-ended bridge DSi, and receives corresponding to
Figure 02_image043
,
Figure 02_image041
First single-ended signal
Figure 02_image095
And the second single-ended signal
Figure 02_image097
.

處理器Pi耦接於數位鎖相迴路LLi及差動至單端橋接器DSi，並經配置以控制數位鎖相迴路LLi基於第一單端信號

Figure 02_image095
及第二單端信號
Figure 02_image097
執行與前一級裝置的頻率同步操作及相位同步操作，並相應地產生第五單端信號
Figure 02_image103
及第六單端信號
Figure 02_image105
，其中第五單端信號
Figure 02_image103
及第六單端信號
Figure 02_image105
分別對應於第一單端信號
Figure 02_image095
及第二單端信號
Figure 02_image097
。接著，處理器Pi可從差動至單端橋接器DSi接收分別對應於控制信號
Figure 02_image039
及
Figure 02_image045
的第三單端信號
Figure 02_image099
及第四單端信號
Figure 02_image101
，並基於第三單端信號
Figure 02_image099
產生第七單端信號
Figure 02_image107
（即用於控制下一級裝置與同步裝置Di進行同步的單端信號）。並且，處理器Pi可基於第四單端信號
Figure 02_image101
執行與前一級裝置的時間同步操作，以產生第八單端信號
Figure 02_image109
。 The processor Pi is coupled to the digital phase locked loop LLi and differentially to the single-ended bridge DSi, and is configured to control the digital phase locked loop LLi based on the first single-ended signal
Figure 02_image095
And the second single-ended signal
Figure 02_image097
Perform frequency synchronization operation and phase synchronization operation with the previous stage device, and generate the fifth single-ended signal accordingly
Figure 02_image103
And the sixth single-ended signal
Figure 02_image105
, Where the fifth single-ended signal
Figure 02_image103
And the sixth single-ended signal
Figure 02_image105
Corresponding to the first single-ended signal
Figure 02_image095
And the second single-ended signal
Figure 02_image097
. Then, the processor Pi can receive the control signals corresponding to the differential to the single-ended bridge DSi, respectively
Figure 02_image039
and
Figure 02_image045
Third single-ended signal
Figure 02_image099
And the fourth single-ended signal
Figure 02_image101
And based on the third single-ended signal
Figure 02_image099
Generate seventh single-ended signal
Figure 02_image107
(That is, a single-ended signal used to control the next-level device to synchronize with the synchronization device Di). And, the processor Pi may be based on the fourth single-ended signal
Figure 02_image101
Perform the time synchronization operation with the previous stage device to generate the eighth single-ended signal
Figure 02_image109
.

單端至差動橋接器SDi可耦接於處理器Pi及數位鎖相迴路LLi，並經配置以從數位鎖相迴路LLi接收第五單端信號

Figure 02_image103
及第六單端信號
Figure 02_image105
，並將其分別轉換為
Figure 02_image057
、
Figure 02_image053
。另外，單端至差動橋接器SDi可從處理器Pi接收第七單端信號
Figure 02_image107
及第八單端信號
Figure 02_image109
，並將其分別轉換為控制信號
Figure 02_image055
及
Figure 02_image059
。之後，單端至差動橋接器SDi可將
Figure 02_image057
、
Figure 02_image053
、控制信號
Figure 02_image055
及
Figure 02_image059
發送至網路輸出介面Oi。 The single-ended to differential bridge SDi can be coupled to the processor Pi and the digital phase-locked loop LLi, and is configured to receive the fifth single-ended signal from the digital phase-locked loop LLi
Figure 02_image103
And the sixth single-ended signal
Figure 02_image105
, And convert them to
Figure 02_image057
,
Figure 02_image053
. In addition, the single-ended to differential bridge SDi can receive the seventh single-ended signal from the processor Pi
Figure 02_image107
And eighth single-ended signal
Figure 02_image109
, And convert them into control signals
Figure 02_image055
and
Figure 02_image059
. After that, the single-ended to differential bridge SDi can connect
Figure 02_image057
,
Figure 02_image053
,control signal
Figure 02_image055
and
Figure 02_image059
Send to the network output interface Oi.

此外，單端至差動橋接器SDi可包括RS422埠SDi1及UART SDi2。RS422埠SDi1可耦接於上述第二輸出腳位（即，網路輸出介面Oi的編號4、5）及上述日時間信號輸出腳位（即，網路輸出介面Oi的編號7、8）。另外，UART SDi2可耦接於RS422埠SDi1及處理器Pi。在本實施例中，UART SDi2可用於將第七單端信號

Figure 02_image107
及第八單端信號
Figure 02_image109
分別轉換為對應的差動信號（即，控制信號
Figure 02_image055
及
Figure 02_image059
），並將控制信號
Figure 02_image055
綁定於
Figure 02_image059
，以及將綁定後的控制信號
Figure 02_image055
及
Figure 02_image059
發送至RS422埠SDi1。之後，RS422埠SDi1即可將綁定後的控制信號
Figure 02_image055
及
Figure 02_image059
傳送至網路輸出介面Oi中的對應腳位，以發送至下一級裝置（的網路輸入介面），但可不限於此。 In addition, the single-ended to differential bridge SDi can include RS422 ports SDi1 and UART SDi2. The RS422 port SDi1 can be coupled to the aforementioned second output pin (ie, the network output interface Oi's numbers 4 and 5) and the aforementioned time of day signal output pin (ie, the network output interface Oi's numbers 7, 8). In addition, the UART SDi2 can be coupled to the RS422 port SDi1 and the processor Pi. In this embodiment, UART SDi2 can be used to convert the seventh single-ended signal
Figure 02_image107
And eighth single-ended signal
Figure 02_image109
Were converted into corresponding differential signals (ie, control signals
Figure 02_image055
and
Figure 02_image059
) And the control signal
Figure 02_image055
Bound to
Figure 02_image059
, And the control signal after binding
Figure 02_image055
and
Figure 02_image059
Send to RS422 port SDi1. Then, RS422 port SDi1 can bind the control signal
Figure 02_image055
and
Figure 02_image059
Send to the corresponding pin in the network output interface Oi to send to the next level device (the network input interface), but it is not limited to this.

請參照圖9A，其是依據本新型之一實施例繪示的管理裝置的功能方塊圖。如圖9A所示，管理裝置MM可包括處理模組PM、網路輸出介面Oi及一單端至差動橋接器。在本實施例中，處理模組PM可用於提供參考同步信號

Figure 02_image001
及參考控制信號
Figure 02_image005
。具體而言，處理模組PM可包括處理器MP及數位鎖相迴路ML，其中處理器MP可在透過10G介面從GM（未繪示）接收PTP封包P1之後，藉由解譯PTP封包P1而取得對應於
Figure 02_image009
、
Figure 02_image013
、
Figure 02_image017
。之後，處理器MP可控制數位鎖相迴路ML對
Figure 02_image009
進行回送操作，以用於與同步裝置DN提供的
Figure 02_image011
比較。另外，處理器MP可產生用於要求同步裝置D1基於參考同步信號
Figure 02_image001
同步於管理裝置MM的參考控制信號
Figure 02_image005
，並透過管理裝置MM的單端至差動橋接器將
Figure 02_image009
、
Figure 02_image013
、
Figure 02_image017
及參考控制信號
Figure 02_image005
發送至網路輸出介面OM。相應地，網路輸出介面OM即可將
Figure 02_image009
、
Figure 02_image013
、
Figure 02_image017
及參考控制信號
Figure 02_image005
發送至同步裝置D1。 Please refer to FIG. 9A, which is a functional block diagram of a management device according to an embodiment of the present invention. As shown in FIG. 9A, the management device MM may include a processing module PM, a network output interface Oi, and a single-ended to differential bridge. In this embodiment, the processing module PM can be used to provide a reference synchronization signal
Figure 02_image001
And reference control signal
Figure 02_image005
. Specifically, the processing module PM can include a processor MP and a digital phase-locked loop ML. The processor MP can decode the PTP packet P1 after receiving the PTP packet P1 from the GM (not shown) through a 10G interface. Get corresponding to
Figure 02_image009
,
Figure 02_image013
,
Figure 02_image017
. After that, the processor MP can control the digital phase-locked loop ML pair
Figure 02_image009
Perform loopback operation for use with the synchronization device DN provided
Figure 02_image011
Compare. In addition, the processor MP can generate a reference synchronization signal for requesting the synchronization device D1
Figure 02_image001
Reference control signal synchronized with the management device MM
Figure 02_image005
, And through the single-ended to differential bridge of the management device MM
Figure 02_image009
,
Figure 02_image013
,
Figure 02_image017
And reference control signal
Figure 02_image005
Send to the network output interface OM. Correspondingly, the network output interface OM can convert
Figure 02_image009
,
Figure 02_image013
,
Figure 02_image017
And reference control signal
Figure 02_image005
Send to sync device D1.

在圖9A中，處理器MP與所示單端至差動橋接器之間的信號傳遞方式，以及單端至差動橋接器的運作方式可參照圖8中處理器Pi與單端至差動橋接器SDi的相關說明，其細節於此不另贅述。In FIG. 9A, the signal transmission mode between the processor MP and the single-ended-to-differential bridge shown, and the operation mode of the single-ended-to-differential bridge can refer to the processor Pi and the single-ended-to-differential bridge in FIG. The details of the description of the bridge SDi will not be repeated here.

請參照圖9B，其是依據圖9A繪示的管理裝置的功能方塊圖。在本實施例中，管理裝置MM可更包括網路輸入介面IM，其可用於接收來自同步裝置DN的

Figure 02_image011
、
Figure 02_image015
、
Figure 02_image019
及控制信號
Figure 02_image007
，並相應地轉傳至處理模組PM。 Please refer to FIG. 9B, which is a functional block diagram of the management device shown in FIG. 9A. In this embodiment, the management device MM may further include a network input interface IM, which can be used to receive the information from the synchronization device DN
Figure 02_image011
,
Figure 02_image015
,
Figure 02_image019
And control signal
Figure 02_image007
, And forward it to the processing module PM accordingly.

另外，本實施例的處理模組PM可另包括所示的差動至單端橋接器，而其運作的方式可參照圖8中差動至單端橋接器DSi的相關說明，於此不另贅述。In addition, the processing module PM of this embodiment may additionally include the differential to single-ended bridge shown, and the operation mode can refer to the related description of the differential to single-ended bridge DSi in FIG. Repeat.

綜上所述，透過本新型提出的分散式同步系統及方法，可在管理裝置不具備IEEE 1588及SyncE功能的情況下，以較低的成本實現同步裝置之間的同步。並且，相較於習知的二層式DDC架構，本案所呈現的單層式DDC架構可達到較高的同步精確度。In summary, through the distributed synchronization system and method proposed by the present invention, synchronization between synchronization devices can be achieved at a lower cost when the management device does not have IEEE 1588 and SyncE functions. Moreover, compared with the conventional two-layer DDC architecture, the single-layer DDC architecture presented in this case can achieve higher synchronization accuracy.

並且，由於本案的管理裝置及同步裝置係透過RJ45輸出/輸入介面傳送/接收對應的控制信號、1PPS信號、日時間資訊及頻率信號，而非透過資料平面中具較高傳輸能力的介面進行傳送，因此可讓管理裝置及同步裝置的硬體資源得到較合理的運用。Moreover, because the management device and synchronization device in this case transmit/receive corresponding control signals, 1PPS signals, time of day information and frequency signals through the RJ45 output/input interface, instead of transmitting through the interface with higher transmission capability in the data plane Therefore, the hardware resources of the management device and the synchronization device can be used more reasonably.

另外，為讓本案的RJ45輸出/輸入介面可用於傳送/接收控制信號及頻率信號，本案的RJ45輸出/輸入介面中的多個腳位可具有異於習知作法的定義方式。In addition, in order to allow the RJ45 output/input interface of this case to be used to transmit/receive control signals and frequency signals, multiple pins in the RJ45 output/input interface of this case may have a definition method different from the conventional practice.

雖然本新型已以實施例揭露如上，然其並非用以限定本新型，任何所屬技術領域中具有通常知識者，在不脫離本新型的精神和範圍內，當可作些許的更動與潤飾，故本新型的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of this new model shall be subject to those defined by the attached patent scope.

110:傳統框架交換器 111,121,CPi:CP 112,122:LC 120,200,600,610:DDC系統 201:管理交換器 202:GM 300:分散式同步系統 710,720:RJ45介面腳位表 MM:管理裝置 D1~DN:同步裝置 IM,I1~IN:網路輸入介面 OM,O1~ON:網路輸出介面 P1:PTP封包

Figure 02_image001
~
Figure 02_image003
:同步信號
Figure 02_image005
~
Figure 02_image007
:控制信號
Figure 02_image009
~
Figure 02_image011
:1PPS信號
Figure 02_image013
~
Figure 02_image015
:頻率信號
Figure 02_image017
~
Figure 02_image019
:日時間資訊 DPi:資料平面 Eth:10G介面 SNi:同步模組 Pi,MP:處理器 LLi,ML:數位鎖相迴路 DSi:差動至單端橋接器 SDi:單端至差動橋接器 DSi1,SDi1:RS422埠 DSi2,SDi2:UART PM:處理模組 S411,S412,S421~S423,S431~S433:步驟110: Traditional frame switch 111, 121, CPi: CP 112, 122: LC 120, 200, 600, 610: DDC system 201: Management switch 202: GM 300: Distributed synchronization system 710, 720: RJ45 interface pin table MM: Management device D1~DN: Synchronization device IM , I1~IN: network input interface OM, O1~ON: network output interface P1: PTP packet
Figure 02_image001
~
Figure 02_image003
: Sync signal
Figure 02_image005
~
Figure 02_image007
:control signal
Figure 02_image009
~
Figure 02_image011
:1PPS signal
Figure 02_image013
~
Figure 02_image015
: Frequency signal
Figure 02_image017
~
Figure 02_image019
: Daily time information DPi: Data plane Eth: 10G interface SNi: Synchronous module Pi, MP: Processor LLi, ML: Digital phase-locked loop DSi: Differential to single-ended bridge SDi: Single-ended to differential bridge DSi1 , SDi1: RS422 port DSi2, SDi2: UART PM: Processing module S411, S412, S421~S423, S431~S433: steps

圖1A是傳統框架交換器的示意圖。 圖1B是分散式分解框架系統的示意圖。 圖2是設置有管理交換器的DDC系統的示意圖。 圖3是依據本新型之一實施例繪示的分散式同步系統示意圖。 圖4A是依據本新型第一實施例繪示的分散式同步方法流程圖。 圖4B是依據本新型第二實施例繪示的分散式同步方法流程圖。 圖4C是依據本新型第三實施例繪示的分散式同步方法流程圖。 圖4D是依據本新型第四實施例繪示的分散式同步方法流程圖。 圖5是依據本新型之一實施例繪示的同步裝置的資料平面及控制平面的示意圖。 圖6是依據圖2及圖3繪示的技術比較圖。 圖7是依據本新型之一實施例繪示的習知RJ45介面腳位表與本案RJ45介面腳位表的比較圖。 圖8是依據本新型之一實施例繪示的同步裝置的功能方塊圖。 圖9A是依據本新型之一實施例繪示的管理裝置的功能方塊圖。 圖9B是依據圖9A繪示的管理裝置的功能方塊圖。 Figure 1A is a schematic diagram of a conventional frame exchanger. Figure 1B is a schematic diagram of a decentralized decomposition frame system. Figure 2 is a schematic diagram of a DDC system with a management switch. Fig. 3 is a schematic diagram of a distributed synchronization system according to an embodiment of the present invention. 4A is a flowchart of a distributed synchronization method according to the first embodiment of the present invention. 4B is a flowchart of a distributed synchronization method according to the second embodiment of the present invention. Fig. 4C is a flow chart of the distributed synchronization method according to the third embodiment of the present invention. FIG. 4D is a flowchart of a distributed synchronization method according to a fourth embodiment of the present invention. 5 is a schematic diagram of the data plane and the control plane of the synchronization device according to an embodiment of the present invention. FIG. 6 is a comparison diagram based on the techniques shown in FIG. 2 and FIG. 3. FIG. 7 is a comparison diagram of the conventional RJ45 interface pin table and the RJ45 interface pin table of the present invention according to an embodiment of the present invention. Fig. 8 is a functional block diagram of a synchronization device according to an embodiment of the present invention. Fig. 9A is a functional block diagram of a management device according to an embodiment of the present invention. FIG. 9B is a functional block diagram of the management device shown in FIG. 9A.

300:分散式同步系統 300: Distributed synchronization system

MM:管理裝置 MM: Management device

D1~DN:同步裝置 D1~DN: Synchronization device

IM,I1~IN:網路輸入介面 IM, I1~IN: network input interface

OM,O1~ON:網路輸出介面 OM, O1~ON: Network output interface

P1:PTP封包 P1: PTP packet

S 0~S N :同步信號 S 0 ~ S N : Sync signal

C 0~C N :控制信號 C 0 ~ C N : Control signal

1PPS 0~1PPS N :1PPS信號 1 PPS 0 ~1 PPS N :1PPS signal

f 0~f N :頻率信號 f 0 ~ f N : frequency signal

ToD 0~ToD N :日時間資訊 ToD 0 ~ ToD N : Daily time information

Claims (25)

一種分散式同步系統，包括一管理裝置，其包括網路輸入介面及網路輸出介面，並經配置以： 接收一精確時間協定封包，並解譯該精確時間協定封包以取得一參考1秒脈衝（pulse per second，PPS）信號、一參考頻率信號及一參考日時間資訊； 透過該管理裝置的該網路輸出介面發送一參考同步信號及一參考控制信號至彼此串接的多個同步裝置中的第1個同步裝置，其中該參考控制信號要求所述第1個同步裝置基於該參考同步信號同步於該管理裝置。 A distributed synchronization system includes a management device, which includes a network input interface and a network output interface, and is configured to: Receiving a precise time protocol packet, and interpreting the precise time protocol packet to obtain a reference pulse per second (PPS) signal, a reference frequency signal and a reference day time information; Send a reference synchronization signal and a reference control signal to the first synchronization device among a plurality of synchronization devices connected to each other through the network output interface of the management device, wherein the reference control signal requires the first synchronization device Synchronize with the management device based on the reference synchronization signal. 如請求項1所述的分散式同步系統，其中該參考同步信號包括
Figure 03_image111
、
Figure 03_image113
、
Figure 03_image115
，其中
Figure 03_image111
為該參考1PPS信號，
Figure 03_image113
為該參考頻率信號，
Figure 03_image115
為該參考日時間資訊。 The distributed synchronization system according to claim 1, wherein the reference synchronization signal includes
Figure 03_image111
,
Figure 03_image113
,
Figure 03_image115
,among them
Figure 03_image111
For this reference 1PPS signal,
Figure 03_image113
Is the reference frequency signal,
Figure 03_image115
Is the time information of the reference day. 如請求項1所述的分散式同步系統，更包括彼此串接的該些同步裝置，其中該些同步裝置個別包括網路輸入介面及網路輸出介面，且該些同步裝置中的第1個同步裝置經配置以： 透過所述第1個同步裝置的該網路輸入介面接收該參考同步信號及該參考控制信號； 基於該參考同步信號及該參考控制信號執行與該管理裝置的一同步操作，並相應地產生
Figure 03_image117
、
Figure 03_image119
、
Figure 03_image121
，其中
Figure 03_image117
為所述第1個同步裝置產生的1PPS信號，
Figure 03_image119
為所述第1個同步裝置產生的頻率信號，
Figure 03_image121
為所述第1個同步裝置產生的日時間資訊； 透過所述第1個同步裝置的該網路輸出介面發送一第一同步信號及一第一控制信號至該些同步裝置中的第2個同步裝置，其中該第一同步信號包括
Figure 03_image117
、
Figure 03_image119
、
Figure 03_image121
，且該第一控制信號要求所述第2個同步裝置同步於所述第1個同步裝置。 The distributed synchronization system according to claim 1, further comprising the synchronization devices connected to each other, wherein the synchronization devices each include a network input interface and a network output interface, and the first one of the synchronization devices The synchronization device is configured to: receive the reference synchronization signal and the reference control signal through the network input interface of the first synchronization device; perform a synchronization operation with the management device based on the reference synchronization signal and the reference control signal , And produce accordingly
Figure 03_image117
,
Figure 03_image119
,
Figure 03_image121
,among them
Figure 03_image117
Is the 1PPS signal generated by the first synchronization device,
Figure 03_image119
Is the frequency signal generated by the first synchronization device,
Figure 03_image121
Time of day information generated by the first synchronization device; sending a first synchronization signal and a first control signal to the second one of the synchronization devices through the network output interface of the first synchronization device Synchronization device, wherein the first synchronization signal includes
Figure 03_image117
,
Figure 03_image119
,
Figure 03_image121
, And the first control signal requires the second synchronization device to synchronize with the first synchronization device. 如請求項3所述的分散式同步系統，其中該同步操作包括一相位同步操作，且所述第1個同步裝置經配置以： 基於
Figure 03_image111
執行該相位同步操作以產生一特定1PPS信號，並估計
Figure 03_image111
與該特定1PPS信號之間的一特定偏移量； 基於該特定偏移量將該特定1PPS信號校正為
Figure 03_image117
。 The distributed synchronization system according to claim 3, wherein the synchronization operation includes a phase synchronization operation, and the first synchronization device is configured to:
Figure 03_image111
Perform the phase synchronization operation to generate a specific 1PPS signal, and estimate
Figure 03_image111
A specific offset from the specific 1PPS signal; based on the specific offset, the specific 1PPS signal is corrected to
Figure 03_image117
. 如請求項4所述的分散式同步系統，其中所述第1個同步裝置透過一10吉位元乙太網路介面連接於該管理裝置，且所述第1個同步裝置更經配置以透過該10吉位元乙太網路介面將該第一特定偏移量回報至該管理裝置。The distributed synchronization system according to claim 4, wherein the first synchronization device is connected to the management device through a 10-Gigabit Ethernet interface, and the first synchronization device is further configured to pass through The 10-Gigabit Ethernet interface reports the first specific offset to the management device. 如請求項3所述的分散式同步系統，其中
Figure 03_image113
、
Figure 03_image119
皆對應於一預設頻率。 The distributed synchronization system as described in claim 3, wherein
Figure 03_image113
,
Figure 03_image119
All correspond to a preset frequency. 如請求項1所述的分散式同步系統，更包括彼此串接的該些同步裝置，其中各該同步裝置包括網路輸入介面及網路輸出介面，且該些同步裝置中的第i個同步裝置經配置以： 透過所述第i個同步裝置的該網路輸入介面從該些同步裝置中的第i-1個同步裝置接收一同步信號及一控制信號，其中
Figure 03_image123
，N為該些同步裝置的總數，該同步信號包括
Figure 03_image125
、
Figure 03_image127
、
Figure 03_image129
，其中
Figure 03_image125
為所述第i-1個同步裝置產生的1PPS信號，
Figure 03_image127
為所述第i-1個同步裝置產生的頻率信號，
Figure 03_image129
為所述第i-1個同步裝置產生的日時間資訊，該控制信號要求所述第i個同步裝置同步於所述第i-1個同步裝置； 基於該同步信號及該控制信號執行與所述第i-1個同步裝置的一同步操作，並相應地產生
Figure 03_image131
、
Figure 03_image133
、
Figure 03_image135
； 透過所述第i個同步裝置的該網路輸出介面發送另一同步信號及另一控制信號，其中所述另一同步信號包括
Figure 03_image131
、
Figure 03_image133
、
Figure 03_image135
。 The distributed synchronization system according to claim 1, further comprising the synchronization devices connected in series with each other, wherein each synchronization device includes a network input interface and a network output interface, and the i-th synchronization device among the synchronization devices The device is configured to: receive a synchronization signal and a control signal from the i-1th synchronization device of the synchronization devices through the network input interface of the i-th synchronization device, wherein
Figure 03_image123
, N is the total number of these synchronization devices, and the synchronization signal includes
Figure 03_image125
,
Figure 03_image127
,
Figure 03_image129
,among them
Figure 03_image125
Is the 1PPS signal generated by the i-1th synchronization device,
Figure 03_image127
Is the frequency signal generated by the i-1th synchronization device,
Figure 03_image129
Is the time-of-day information generated by the i-1th synchronizing device, the control signal requires the i-th synchronizing device to synchronize with the i-1th synchronizing device; based on the synchronizing signal and the control signal to perform and all Said a synchronization operation of the i-1th synchronization device, and generates accordingly
Figure 03_image131
,
Figure 03_image133
,
Figure 03_image135
; Send another synchronization signal and another control signal through the network output interface of the i-th synchronization device, wherein the another synchronization signal includes
Figure 03_image131
,
Figure 03_image133
,
Figure 03_image135
. 如請求項7所述的分散式同步系統，其中該同步操作包括一相位同步操作，且所述第i個同步裝置經配置以： 基於
Figure 03_image125
執行該相位同步操作以產生一特定1PPS信號，並估計
Figure 03_image125
與該特定1PPS信號之間的一特定偏移量； 基於該特定偏移量將該特定1PPS信號校正為
Figure 03_image131
。 The distributed synchronization system according to claim 7, wherein the synchronization operation includes a phase synchronization operation, and the i-th synchronization device is configured to:
Figure 03_image125
Perform the phase synchronization operation to generate a specific 1PPS signal, and estimate
Figure 03_image125
A specific offset from the specific 1PPS signal; based on the specific offset, the specific 1PPS signal is corrected to
Figure 03_image131
. 如請求項8所述的分散式同步系統，其中所述第i個同步裝置透過一10吉位元乙太網路介面連接於該管理裝置，且所述第i個同步裝置更經配置以透過該10吉位元乙太網路介面將該特定偏移量回報至該管理裝置。The distributed synchronization system according to claim 8, wherein the i-th synchronization device is connected to the management device through a 10-Gigabit Ethernet interface, and the i-th synchronization device is further configured to pass The 10-Gigabit Ethernet interface reports the specific offset to the management device. 如請求項7所述的分散式同步系統，其中對於
Figure 03_image137
，所述第i個同步裝置透過該網路輸出介面發送所述另一同步信號及所述另一控制信號至該些同步裝置中的第i+1個同步裝置，且所述另一控制信號要求所述第i+1個同步裝置同步於所述第i個同步裝置。 The distributed synchronization system as described in claim 7, wherein
Figure 03_image137
, The i-th synchronization device sends the other synchronization signal and the other control signal to the i+1-th synchronization device among the synchronization devices through the network output interface, and the other control signal The (i+1)th synchronization device is required to synchronize with the i-th synchronization device. 如請求項7所述的分散式同步系統，其中
Figure 03_image113
、
Figure 03_image127
、
Figure 03_image133
皆對應於一預設頻率。 The distributed synchronization system as described in claim 7, wherein
Figure 03_image113
,
Figure 03_image127
,
Figure 03_image133
All correspond to a preset frequency. 如請求項7所述的分散式同步系統，其中對於i=N，所述第i個同步裝置透過該網路輸出介面發送所述另一同步信號及所述另一控制信號至該管理裝置的該網路輸入介面，且所述另一控制信號通知該管理裝置該些同步裝置已完成同步。The distributed synchronization system according to claim 7, wherein for i=N, the i-th synchronization device sends the other synchronization signal and the other control signal to the management device through the network output interface The network input interface, and the other control signal notifies the management device that the synchronization devices have completed synchronization. 如請求項1所述的分散式同步系統，其中該些同步裝置包括彼此串接的第1個同步裝置至第N個同步裝置，N為該些同步裝置的總數，且該管理裝置更經配置以： 透過該管理裝置的該網路輸入介面從所述第N個同步裝置接收一同步信號及一控制信號，其中該同步信號包括
Figure 03_image139
、
Figure 03_image141
、
Figure 03_image143
，其中
Figure 03_image139
為所述第N個同步裝置產生的1PPS信號，
Figure 03_image141
為所述第N個同步裝置產生的頻率信號，
Figure 03_image143
為所述第N個同步裝置產生的日時間資訊，該控制信號用以通知該管理裝置該些同步裝置已完成同步； 估計
Figure 03_image111
及
Figure 03_image139
之間的一相位偏移量； 反應於判定該相位偏移量大於一偏移量門限值，依據該相位偏移量與該偏移量門限值之間的一差值控制該些同步裝置的至少其中之一進行一相位校正操作。 The distributed synchronization system according to claim 1, wherein the synchronization devices include the first synchronization device to the Nth synchronization device that are serially connected to each other, and N is the total number of the synchronization devices, and the management device is further configured To: receive a synchronization signal and a control signal from the Nth synchronization device through the network input interface of the management device, wherein the synchronization signal includes
Figure 03_image139
,
Figure 03_image141
,
Figure 03_image143
,among them
Figure 03_image139
Is the 1PPS signal generated by the Nth synchronization device,
Figure 03_image141
Is the frequency signal generated by the Nth synchronization device,
Figure 03_image143
Is the time of day information generated by the Nth synchronization device, the control signal is used to notify the management device that the synchronization devices have completed synchronization;
Figure 03_image111
and
Figure 03_image139
In response to determining that the phase offset is greater than an offset threshold, the synchronization devices are controlled according to a difference between the phase offset and the offset threshold At least one of them performs a phase correction operation. 如請求項1所述的分散式同步系統，其中該分散式同步系統為一分散式分解框架（distributed disaggregated chassis，DDC）系統，該管理裝置包括一管理交換器，且各該同步裝置為一線卡。The distributed synchronization system according to claim 1, wherein the distributed synchronization system is a distributed disaggregated chassis (DDC) system, the management device includes a management switch, and each synchronization device is a line card . 如請求項14所述的分散式同步系統，其中各該同步裝置包括一資料平面及一控制平面，而該網路輸入介面及該網路輸出介面屬於該控制平面。The distributed synchronization system according to claim 14, wherein each of the synchronization devices includes a data plane and a control plane, and the network input interface and the network output interface belong to the control plane. 如請求項1所述的分散式同步系統，其中該管理裝置的該網路輸入介面及該網路輸出介面分別為一RJ45輸入介面及一RJ45輸出介面。The distributed synchronization system according to claim 1, wherein the network input interface and the network output interface of the management device are an RJ45 input interface and an RJ45 output interface, respectively. 如請求項1所述的分散式同步系統，更包括彼此串接的該些同步裝置，其中該些同步裝置個別包括網路輸入介面及網路輸出介面，且各該同步裝置的該網路輸入介面及該網路輸出介面分別為一RJ45輸入介面及一RJ45輸出介面。The distributed synchronization system according to claim 1, further comprising the synchronization devices connected to each other, wherein the synchronization devices each include a network input interface and a network output interface, and the network input of each synchronization device The interface and the network output interface are an RJ45 input interface and an RJ45 output interface, respectively. 一種分散式同步系統，包括多個同步裝置，其中該些同步裝置彼此串接且個別包括網路輸入介面及網路輸出介面，且該些同步裝置中的第1個同步裝置經配置以： 透過所述第1個同步裝置的該網路輸入介面從一管理裝置接收一參考同步信號及一參考控制信號，其中該參考控制信號要求所述第1個同步裝置基於該參考同步信號同步於該管理裝置； 基於該參考同步信號及該參考控制信號執行與該管理裝置的一同步操作，並相應地產生一第一同步信號； 透過所述第1個同步裝置的該網路輸出介面發送該第一同步信號及一第一控制信號至該些同步裝置中的第2個同步裝置，其中該第一控制信號要求所述第2個同步裝置基於該第一同步信號同步於所述第1個同步裝置。 A distributed synchronization system includes a plurality of synchronization devices, wherein the synchronization devices are serially connected to each other and each includes a network input interface and a network output interface, and the first synchronization device of the synchronization devices is configured to: Receive a reference synchronization signal and a reference control signal from a management device through the network input interface of the first synchronization device, wherein the reference control signal requires the first synchronization device to synchronize with the reference synchronization signal based on the reference synchronization signal Management device Perform a synchronization operation with the management device based on the reference synchronization signal and the reference control signal, and generate a first synchronization signal accordingly; Send the first synchronization signal and a first control signal to the second synchronization device among the synchronization devices through the network output interface of the first synchronization device, wherein the first control signal requests the second synchronization device A synchronization device synchronizes with the first synchronization device based on the first synchronization signal. 如請求項18所述的分散式同步系統，其中該參考同步信號包括
Figure 03_image111
、
Figure 03_image113
、
Figure 03_image115
，其中
Figure 03_image111
、
Figure 03_image113
、
Figure 03_image115
分別為該管理裝置經解譯一精確時間協定封包而取得的一參考1秒脈衝（pulse per second，PPS）信號、一預設頻率信號及一預設日時間資訊。 The distributed synchronization system according to claim 18, wherein the reference synchronization signal includes
Figure 03_image111
,
Figure 03_image113
,
Figure 03_image115
,among them
Figure 03_image111
,
Figure 03_image113
,
Figure 03_image115
They are a reference pulse per second (PPS) signal, a preset frequency signal, and a preset time of day information obtained by the management device by interpreting a precise time protocol packet. 如請求項18所述的分散式同步系統，其中該第一同步信號包括
Figure 03_image117
、
Figure 03_image119
、
Figure 03_image121
，其中
Figure 03_image117
為所述第1個同步裝置產生的1PPS信號，
Figure 03_image119
為所述第1個同步裝置產生的頻率信號，
Figure 03_image121
為所述第1個同步裝置產生的日時間資訊。 The distributed synchronization system according to claim 18, wherein the first synchronization signal includes
Figure 03_image117
,
Figure 03_image119
,
Figure 03_image121
,among them
Figure 03_image117
Is the 1PPS signal generated by the first synchronization device,
Figure 03_image119
Is the frequency signal generated by the first synchronization device,
Figure 03_image121
Time of day information generated by the first synchronization device. 一種分散式同步系統，包括彼此串接的多個同步裝置，其中各該同步裝置包括網路輸入介面及網路輸出介面，且該些同步裝置中的第i個同步裝置經配置以： 透過所述第i個同步裝置的該網路輸入介面從該些同步裝置中的第i-1個同步裝置接收一同步信號及一控制信號，其中
Figure 03_image123
，N為該些同步裝置的總數； 基於該同步信號及該控制信號執行與所述第i-1個同步裝置的一同步操作，並相應地產生另一同步信號；； 透過所述第i個同步裝置的該網路輸出介面發送所述另一同步信號及另一控制信號。 A distributed synchronization system includes a plurality of synchronization devices connected in series, wherein each synchronization device includes a network input interface and a network output interface, and the i-th synchronization device among the synchronization devices is configured to: The network input interface of the i-th synchronization device receives a synchronization signal and a control signal from the i-1th synchronization device among the synchronization devices, where
Figure 03_image123
, N is the total number of the synchronization devices; execute a synchronization operation with the i-1th synchronization device based on the synchronization signal and the control signal, and generate another synchronization signal accordingly; The network output interface of the synchronization device sends the other synchronization signal and another control signal. 如請求項21所述的分散式同步系統，其中該同步信號包括
Figure 03_image125
、
Figure 03_image127
、
Figure 03_image129
，其中
Figure 03_image125
為所述第i-1個同步裝置產生的1PPS信號，
Figure 03_image127
為所述第i-1個同步裝置產生的頻率信號，
Figure 03_image129
為所述第i-1個同步裝置產生的日時間資訊。 The distributed synchronization system according to claim 21, wherein the synchronization signal includes
Figure 03_image125
,
Figure 03_image127
,
Figure 03_image129
,among them
Figure 03_image125
Is the 1PPS signal generated by the i-1th synchronization device,
Figure 03_image127
Is the frequency signal generated by the i-1th synchronization device,
Figure 03_image129
The time of day information generated by the i-1th synchronization device. 如請求項21所述的分散式同步系統，其中所述另一同步信號包括
Figure 03_image131
、
Figure 03_image133
、
Figure 03_image135
。 The distributed synchronization system according to claim 21, wherein the another synchronization signal includes
Figure 03_image131
,
Figure 03_image133
,
Figure 03_image135
. 如請求項21所述的分散式同步系統，其中對於
Figure 03_image137
，所述第i個同步裝置透過該網路輸出介面發送所述另一同步信號及所述另一控制信號至該些同步裝置中的第i+1個同步裝置，且所述另一控制信號要求所述第i+1個同步裝置同步於所述第i個同步裝置。 The distributed synchronization system as described in claim 21, wherein
Figure 03_image137
, The i-th synchronization device sends the other synchronization signal and the other control signal to the i+1-th synchronization device among the synchronization devices through the network output interface, and the other control signal The (i+1)th synchronization device is required to synchronize with the i-th synchronization device. 如請求項21所述的分散式同步系統，其中對於i=N，所述第i個同步裝置透過該網路輸出介面發送所述另一同步信號及所述另一控制信號至一管理裝置的網路輸入介面，且所述另一控制信號通知該管理裝置該些同步裝置已完成同步。The distributed synchronization system according to claim 21, wherein for i=N, the i-th synchronization device sends the other synchronization signal and the other control signal to a management device through the network output interface A network input interface, and the other control signal informs the management device that the synchronization devices have completed synchronization.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI765687B (en) * 2020-12-23 2022-05-21 台灣黑熊網路安全股份有限公司 Communication system and communication method for one-way transmission
TWI772843B (en) * 2020-07-15 2022-08-01 優達科技股份有限公司 Distributed synchronization system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI772843B (en) * 2020-07-15 2022-08-01 優達科技股份有限公司 Distributed synchronization system
TWI765687B (en) * 2020-12-23 2022-05-21 台灣黑熊網路安全股份有限公司 Communication system and communication method for one-way transmission
US11496233B2 (en) 2020-12-23 2022-11-08 BlackBear (Taiwan) Industrial Networking Security Ltd. Communication system and communication method for one-way transmission

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