CN108123773A - A kind of method for synchronizing time and equipment - Google Patents
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Abstract
本申请涉及互联网技术领域，尤其涉及一种时间同步方法及设备，用以解决现有的时间同步网络存在的时间同步精度较低的问题；本申请实施例提供的时间同步设备包括：时间交互型接口、时间输出型接口、及第一处理单元，其中，时间交互型接口用于与其它时间同步设备进行时间交互；第一处理单元用于根据通过所述时间交互型接口交互的时间信息，确定进行时间同步后的时间信息；时间输出型接口，用于输出所述时间同步后的时间信息。这样，在时间同步网络中处于同一级别的时间同步设备之间可以先进行时间同步，之后，再向下游节点输出同步后的时间，因而能有效提高时间同步网络的时间同步精度。
This application relates to the field of Internet technology, and in particular to a time synchronization method and device to solve the problem of low time synchronization accuracy in existing time synchronization networks; the time synchronization devices provided in the embodiments of this application include: time interactive interface, a time output interface, and a first processing unit, wherein the time interactive interface is used for time interaction with other time synchronization devices; the first processing unit is used to determine the time information interacted through the time interactive interface Time information after time synchronization; a time output interface, used to output the time information after time synchronization. In this way, time synchronization between time synchronization devices at the same level in the time synchronization network can be performed first, and then the synchronized time can be output to the downstream node, thus effectively improving the time synchronization accuracy of the time synchronization network.
Description
技术领域technical field
本申请涉及互联网技术领域，尤其涉及一种时间同步方法及设备。The present application relates to the technical field of the Internet, and in particular to a time synchronization method and device.
背景技术Background technique
目前，移动通信、金融、电力等多个行业都对网络时间同步有较高的精度要求，这些行业大多通过精确时间同步协议(Precision Timing Protocol，PTP)来组建时间同步网络。At present, many industries such as mobile communication, finance, and electric power have high precision requirements for network time synchronization, and most of these industries use a Precision Timing Protocol (PTP) to build a time synchronization network.
现有技术中，基于PTP的时间同步网络主要采用主从式架构，在这种主从式架构下，源服务设备从卫星或者地面授时中心等处获取时间信息，然后将获取的时间信息传送给时间同步网络中的下游节点，这样，如果源服务设备获取的时间信息存在误差，则会将这种误差引入该源服务器设备的下游节点。此外，现有的时间同步网络中，如果有多个源服务设备，这多个源服务设备会分别获取时间源，此时，由于向各个源服务设备提供时间的时间源可能不同，即使不同源服务器从同一时间源处获取时间，各个源服务器引入的误差也可能不同，从而导致各个源服务器的下游节点之间的时间存在较大差异。In the prior art, the PTP-based time synchronization network mainly adopts a master-slave architecture. Under this master-slave architecture, the source service equipment obtains time information from satellites or ground timing centers, etc., and then transmits the acquired time information to The downstream nodes in the time synchronization network, so that if there is an error in the time information obtained by the source service device, the error will be introduced into the downstream nodes of the source server device. In addition, in the existing time synchronization network, if there are multiple source service devices, these multiple source service devices will obtain the time sources respectively. At this time, since the time sources that provide time to each source service device may be different, even if different sources The server obtains the time from the same time source, and the errors introduced by each source server may also be different, resulting in large differences in the time between the downstream nodes of each source server.
随着第五代(5th-Generation，5G)移动通信基站间协作化以及超高精度基站定位等技术的发展，它们对网络时间同步的精度都提出了更高的要求，而现有的网络时间同步方法无法满足这些要求。可见，现有的时间同步网络存在着时间同步精度较低的问题。With the development of fifth-generation (5th-Generation, 5G) mobile communication base station cooperation and ultra-high-precision base station positioning and other technologies, they have put forward higher requirements for the accuracy of network time synchronization, and the existing network time Synchronous methods cannot meet these requirements. It can be seen that the existing time synchronization network has the problem of low time synchronization accuracy.
发明内容Contents of the invention
本申请实施例提供一种时间同步方法及设备，用以解决现有的时间同步网络存在着时间同步精度较低的问题。Embodiments of the present application provide a time synchronization method and device, which are used to solve the problem of low time synchronization accuracy existing in existing time synchronization networks.
本申请实施例提供的一种时间同步方法，包括：A time synchronization method provided in an embodiment of the present application includes:
第一时间同步设备通过时间交互型接口与其它时间同步设备进行时间交互；The first time synchronization device performs time interaction with other time synchronization devices through a time interactive interface;
根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息；According to the time information exchanged through the time interactive interface, determine the time information after time synchronization;
通过时间输出型接口输出时间同步后的时间信息。The time information after time synchronization is output through the time output interface.
可选地，第一时间同步设备通过时间交互型接口与其它时间同步设备进行时间交互，包括：Optionally, the first time synchronization device performs time interaction with other time synchronization devices through a time interactive interface, including:
当时间同步设备和其它时间同步设备进行时间交互时，对时间同步设备交互前的时间加载第一时间偏移量；When the time synchronization device interacts with other time synchronization devices, load the first time offset to the time before the time synchronization device interaction;
通过时间交互型接口将所述加载第一时间偏移量后的时间信息，发送给其它时间同步设备。The time information loaded with the first time offset is sent to other time synchronization devices through a time interactive interface.
可选地，通过时间输出型接口输出时间同步后的时间信息，包括：Optionally, time information after time synchronization is output through a time output interface, including:
当时间同步设备输出时间同步后的时间信息时，对时间同步后的时间加载第二时间偏移量；When the time synchronization device outputs the time information after time synchronization, load the second time offset to the time after time synchronization;
通过时间输出型接口，将加载第二时间偏移量后的时间信息发送给下游节点。The time information loaded with the second time offset is sent to the downstream node through the time output interface.
本申请实施例提供的一种时间同步设备，包括：A time synchronization device provided in an embodiment of the present application includes:
时间交互型接口，用于与其它时间同步设备进行时间交互；Time interactive interface, used for time interaction with other time synchronization devices;
第一处理单元，用于根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息；The first processing unit is configured to determine the time information after time synchronization according to the time information interacted through the time interactive interface;
时间输出型接口，用于输出时间同步后的时间信息。Time output interface, used to output time information after time synchronization.
可选地，时间交互型接口还用于：Optionally, the time-interactive interface is also used to:
若在预设时长内没有接收到其它时间同步设备发送的时间信息，则切换为时间输出型接口；If the time information sent by other time synchronization devices is not received within the preset time period, it will switch to the time output interface;
时间输出型接口还用于：The time output interface is also used for:
在接收到其它时间同步设备发送的时间信息后，切换为时间交互型接口。After receiving the time information sent by other time synchronization devices, switch to the time interactive interface.
可选地，时间同步设备还包括：Optionally, the time synchronization device also includes:
第二处理单元，用于当时间同步设备和其它时间同步设备进行时间交互时，对时间同步设备交互前的时间加载第一时间偏移量；The second processing unit is configured to load the first time offset to the time before the time synchronization device interaction when the time synchronization device performs time interaction with other time synchronization devices;
时间交互型接口具体用于：The time interactive interface is specifically used for:
将加载第一时间偏移量后的时间信息，发送给其它时间同步设备。Send the time information loaded with the first time offset to other time synchronization devices.
可选地，时间同步设备还包括：Optionally, the time synchronization device also includes:
第三处理单元，用于当时间同步设备输出时间同步后的时间信息时，对时间同步后的时间加载第二时间偏移量；The third processing unit is configured to load the second time offset to the time after time synchronization when the time synchronization device outputs the time information after time synchronization;
时间输出型接口具体用于：The time output interface is specifically used for:
将加载第二时间偏移量后的时间信息发送给下游节点。Send the time information loaded with the second time offset to the downstream node.
本申请实施例提供的又一种时间同步设备，包括：Another time synchronization device provided in the embodiment of the present application includes:
时间接口，用于在切换到时间交互功能后，与其它时间同步设备进行时间交互；还用于在切换到时间输出功能后，输出时间同步后的时间信息；The time interface is used to perform time interaction with other time synchronization devices after switching to the time interaction function; it is also used to output time information after time synchronization after switching to the time output function;
第一处理单元，用于根据通过时间接口交互的时间信息，确定进行时间同步后的时间信息。The first processing unit is configured to determine time information after time synchronization according to the time information exchanged through the time interface.
可选地，时间接口具体用于：Optionally, the time interface is specifically used for:
若在预设时长内没有接收到其它时间同步设备发送的时间信息，则执行时间输出功能；若接收到其它时间同步设备发送的时间信息，则执行时间交互功能。If the time information sent by other time synchronization devices is not received within the preset time period, the time output function will be executed; if the time information sent by other time synchronization devices is received, the time interaction function will be executed.
可选地，时间同步设备还包括：Optionally, the time synchronization device also includes:
第二处理单元，用于当时间同步设备和其它时间同步设备进行时间交互时，对时间同步设备交互前的时间加载第一时间偏移量；The second processing unit is configured to load the first time offset to the time before the time synchronization device interaction when the time synchronization device performs time interaction with other time synchronization devices;
时间接口具体用于：The time interface is specifically used for:
将加载第一时间偏移量后的时间信息，发送给其它时间同步设备；和/或，Send the time information loaded with the first time offset to other time synchronization devices; and/or,
所述时间同步设备还包括：The time synchronization device also includes:
第三处理单元，用于当时间同步设备输出所述时间同步后的时间信息时，对时间同步后的时间加载第二时间偏移量；A third processing unit, configured to load a second time offset to the time after time synchronization when the time synchronization device outputs the time information after time synchronization;
时间接口具体用于：The time interface is specifically used for:
将加载第二时间偏移量后的时间信息发送给下游节点。Send the time information loaded with the second time offset to the downstream node.
本申请实施例中的时间同步设备，包括时间交互型接口、时间输出型接口、及第一处理单元，其中，时间交互型接口用于与其它时间同步设备进行时间交互；第一处理单元用于根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息；时间输出型接口，用于输出时间同步后的时间信息。这样，在时间同步网络中处于同一级别的时间同步设备之间可以先进行时间同步，之后，再向下游节点输出同步后的时间，因此，可以提高时间同步网络的时间同步精度。The time synchronization device in the embodiment of the present application includes a time interaction interface, a time output interface, and a first processing unit, wherein the time interaction interface is used for time interaction with other time synchronization devices; the first processing unit is used for The time information after time synchronization is determined according to the time information exchanged through the time interaction interface; the time output interface is used to output the time information after time synchronization. In this way, time synchronization between time synchronization devices at the same level in the time synchronization network can be performed first, and then the synchronized time can be output to the downstream node. Therefore, the time synchronization accuracy of the time synchronization network can be improved.
附图说明Description of drawings
图1为本申请实施例提供的时间同步设备结构图；FIG. 1 is a structural diagram of a time synchronization device provided in an embodiment of the present application;
图2为本申请实施例提供的时间同步网络架构示意图；FIG. 2 is a schematic diagram of a time synchronization network architecture provided by an embodiment of the present application;
图3为本申请实施例提供的又一时间同步设备结构图；FIG. 3 is a structural diagram of another time synchronization device provided by the embodiment of the present application;
图4为本申请实施例提供的时间同步方法流程图。FIG. 4 is a flow chart of the time synchronization method provided by the embodiment of the present application.
具体实施方式Detailed ways
本申请实施例中的时间同步设备，包括时间交互型接口、时间输出型接口、及第一处理单元，其中，时间交互型接口用于与其它时间同步设备进行时间交互；第一处理单元用于根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息；时间输出型接口，用于输出时间同步后的时间信息。这样，在时间同步网络中处于同一级别的时间同步设备之间可以先进行时间同步，之后，再向下游节点输出同步后的时间，因此，可以提高时间同步网络的时间同步精度。The time synchronization device in the embodiment of the present application includes a time interaction interface, a time output interface, and a first processing unit, wherein the time interaction interface is used for time interaction with other time synchronization devices; the first processing unit is used for The time information after time synchronization is determined according to the time information exchanged through the time interaction interface; the time output interface is used to output the time information after time synchronization. In this way, time synchronization between time synchronization devices at the same level in the time synchronization network can be performed first, and then the synchronized time can be output to the downstream node. Therefore, the time synchronization accuracy of the time synchronization network can be improved.
下面结合说明书附图对本申请实施例作进一步详细描述。The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.
实施例一Embodiment one
如图1所示，为本申请实施例提供的时间同步设备10结构图，包括：As shown in FIG. 1, the time synchronization device 10 structure diagram provided for the embodiment of the present application includes:
时间交互型接口101，用于与其它时间同步设备进行时间交互。The time interaction interface 101 is used for time interaction with other time synchronization devices.
这里，时间交互型接口执行的功能为，向其它时间同步设备发送本地的时间信息，同时，接收其它时间同步设备发送的时间信息。其中，发送和/或接收的时间信息可以是带有时间戳信息的时间同步报文、或秒脉冲信号等。此外，时间交互型接口的物理类型可以为以太接口、D型数据接口连接器(DB9)、同轴连接器等。Here, the function performed by the time interactive interface is to send local time information to other time synchronization devices, and at the same time, receive time information sent by other time synchronization devices. Wherein, the time information sent and/or received may be a time synchronization message with time stamp information, or a second pulse signal, and the like. In addition, the physical type of the time-interactive interface may be an Ethernet interface, a D-type data interface connector (DB9), a coaxial connector, and the like.
在具体实施过程中，时间同步设备的时间交互型接口可以为一个或多个。当接收到来自时间交互型接口的时间信息时，可以将该时间信息送入第一处理单元，以便对时间同步设备的时间进行调整，同时，将时间同步设备的时间发送到该时间交互型接口对外输出。In a specific implementation process, there may be one or more time interactive interfaces of the time synchronization device. When time information from the time interactive interface is received, the time information can be sent to the first processing unit so as to adjust the time of the time synchronization device, and at the same time, send the time of the time synchronization device to the time interaction interface external output.
第一处理单元102，用于根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息。The first processing unit 102 is configured to determine time information after time synchronization according to the time information interacted through the time interactive interface.
这里，通过时间交互型接口交互的时间信息可以包括其它同级时间同步设备发送的时间信息，以及时间同步设备10在与其它同级时间同步设备交互前确定的时间信息，其中时间同步设备10在与其它同级时间同步设备进行交互前确定的时间信息可以是根据以下信息确定的：Here, the time information exchanged through the time interactive interface may include time information sent by other time synchronization devices of the same level, and time information determined by the time synchronization device 10 before interacting with other time synchronization devices of the same level, where the time synchronization device 10 The time information determined before interacting with other time synchronization devices at the same level may be determined according to the following information:
该时间同步设备10本地保持的时间信息；和/或，The time information locally maintained by the time synchronization device 10; and/or,
通过除上述时间交互型接口、时间输出型接口外的其它类型的接口获取的时间信息，比如，通过时间接收型接口从卫星获取的时间信息。Time information acquired through other types of interfaces other than the above-mentioned time interactive interface and time output interface, for example, time information acquired from satellites through a time receiving interface.
也即，作为一种实现方式，第一处理单元可以结合从上述时间接收型接口获取的时间信息、本地保持的时间信息(比如从内置的卫星接收机获取的时间信息)，以及其它同级时间同步设备发送的时间信息，确定进行时间同步后的时间信息。That is, as an implementation, the first processing unit can combine the time information obtained from the above-mentioned time receiving interface, the time information held locally (such as the time information obtained from the built-in satellite receiver), and other time information of the same level Synchronize the time information sent by the device, and determine the time information after time synchronization.
在具体实施过程中，时间同步设备可以有多个时间交互型接口，因此可能同时与多个其它时间同步设备进行时间交互，在获得多个其它时间同步设备的时间信息后，第一处理单元可以将这多个其它时间同步设备的时间信息，以及本地的时间信息进行比较，确定一个最准的时间进行同步。此外，在进行同步的过程中，时间同步设备可能需要与其它时间同步设备进行多次时间交互才可以完成一次时间同步。In the specific implementation process, the time synchronization device may have multiple time interactive interfaces, so it may perform time interaction with multiple other time synchronization devices at the same time. After obtaining the time information of multiple other time synchronization devices, the first processing unit can Compare the time information of the multiple other time synchronization devices with the local time information to determine the most accurate time for synchronization. In addition, during the synchronization process, the time synchronization device may need to perform multiple time interactions with other time synchronization devices before completing one time synchronization.
时间输出型接口103，用于输出时间同步后的时间信息。The time output type interface 103 is used to output time information after time synchronization.
时间输出型接口用于将时间同步后的时间信息对外输出，不用于接收其它时间同步设备的时间信息(其它时间同步设备可以向时间输出型接口发送时间信息，但时间输出型接口并不处理)。其中，时间输出型接口输出的时间信息可以为带有时间戳信息的时间同步报文、或者秒脉冲信号等。此外，时间输出型接口的物理类型可以为以太接口、DB9、同轴连接器等。The time output interface is used to output time information after time synchronization, not to receive time information from other time synchronization devices (other time synchronization devices can send time information to the time output interface, but the time output interface does not process it) . Wherein, the time information output by the time output interface may be a time synchronization message with time stamp information, or a second pulse signal, and the like. In addition, the physical type of the time output interface may be Ethernet interface, DB9, coaxial connector, etc.
在具体实施过程中，对时间同步设备各个时间接口的功能可以灵活配置。初始化状态下，可以人工配置。例如，一台时间同步设备有3个时间接口，可以将其中2个时间接口设置为时间交互型接口，1个设置为时间输出型接口；或者将3个均设置为时间输出型接口。In the specific implementation process, the functions of each time interface of the time synchronization device can be flexibly configured. In the initialization state, it can be manually configured. For example, if a time synchronization device has 3 time interfaces, you can set 2 of them as time interactive interfaces and 1 as time output interface; or set all 3 as time output interfaces.
此外，也可以在时间同步设备投入使用后，根据各时间接口接收到时间信号的情况，自动地将其配置为时间交互型接口或时间输出型接口。具体地，当时间同步设备投入使用以后，若初始化状态下人工配置的时间交互型接口在预设时长内没有接收到其它时间同步设备发送的时间信息，则可以将该时间交互型接口切换为时间输出型接口，之后，执行时间输出型接口输出时间同步后的时间信息的功能；若初始化状态下人工配置的时间输出型接口接收到其它时间同步设备发送的时间信息，则将时间输出型接口切换为时间交互型接口，之后，执行时间交互型接口与其它时间同步设备进行时间交互的功能。In addition, after the time synchronization device is put into use, each time interface can be automatically configured as a time interactive interface or a time output interface according to the time signal received by each time interface. Specifically, after the time synchronization device is put into use, if the time interactive interface manually configured in the initialization state does not receive the time information sent by other time synchronization devices within a preset period of time, the time interactive interface can be switched to the time Output interface, after that, implement the function of the time output interface to output the time information after time synchronization; if the time output interface manually configured in the initialization state receives the time information sent by other time synchronization devices, the time output interface will be switched to It is a time-interactive interface, and then executes the time-interactive function of the time-interactive interface to perform time interaction with other time synchronization devices.
比如，时间同步设备A有两个时间接口m和n，初始化状态下，m为时间交互型接口，n为时间输出型接口。当时间同步设备A投入使用后，如果m和n两个时间接口在时间同步网络中的位置接反了，那么，时间交互型接口m在一定时间段内，比如5分钟，接收不到其它时间同步设备发送的时间信息，则时间同步设备A可以将时间交互型接口m切换为时间输出型接口；类似地，时间输出型接口n应该向外输出时间信息，却在接口处检测到其它时间同步设备发送的时间信息，则时间同步设备A可以将时间输出型接口n切换为时间交互型接口，因此，可以很好地解决时间同步设备A在初次接入时间同步网络时的适配问题。For example, time synchronization device A has two time interfaces m and n. In the initialization state, m is a time interactive interface, and n is a time output interface. When the time synchronization device A is put into use, if the positions of the two time interfaces m and n in the time synchronization network are reversed, then the time interactive interface m cannot receive other times within a certain period of time, such as 5 minutes The time information sent by the synchronization device, the time synchronization device A can switch the time interactive interface m to the time output interface; similarly, the time output interface n should output time information, but other time synchronization is detected at the interface The time information sent by the device, the time synchronization device A can switch the time output type interface n to the time interaction type interface, therefore, it can well solve the adaptation problem of the time synchronization device A when it first accesses the time synchronization network.
此外，当时间同步设备A接入时间同步网络之后，如果时间同步网络的网络拓扑结构发生了变化，时间同步设备A也可以根据上述办法重新对各时间接口的功能进行配置，不需要再人工进行调整，灵活性更好。In addition, after the time synchronization device A is connected to the time synchronization network, if the network topology of the time synchronization network changes, the time synchronization device A can also reconfigure the functions of each time interface according to the above method, and no manual operation is required. Adjustment, better flexibility.
在具体实施过程中，时间同步设备还包括第二处理单元104，用于当时间同步设备和其它时间同步设备进行时间交互时，对时间同步设备交互前的时间加载第一时间偏移量；之后，通过时间交互型接口将加载第一时间偏移量后的时间信息，发送给其它时间同步设备。In a specific implementation process, the time synchronization device further includes a second processing unit 104, configured to load the first time offset to the time before the time synchronization device interaction when the time synchronization device performs time interaction with other time synchronization devices; , sending the time information loaded with the first time offset to other time synchronization devices through the time interactive interface.
可选地，当时间同步设备有多个时间交互型接口时，第二处理单元对各时间交互型接口加载的第一时间偏移量可以不同，以便时间同步设备可以为不同时间标准的地区服务。Optionally, when the time synchronization device has multiple time-interactive interfaces, the first time offset loaded by the second processing unit on each time-interaction interface can be different, so that the time synchronization device can serve regions with different time standards .
比如，时间同步设备在与其它时间同步设备进行时间交互时，可以根据时间同步设备和其它时间同步设备所处地理位置的时区信息，确定时间偏移量，比如600纳秒，之后，第二处理单元可以对时间同步设备交互前的时间加上600纳秒；时间同步设备在与其它时间同步设备进行时间交互时，还可以根据时间同步设备和其它时间同步设备之间预先选定的时间标准，比如选定的时间标准为全球定位系统(Global Positioning System，GPS)时间或者北斗时间，确定时间偏移量，比如-200纳秒，之后，第二处理单元可以对时间同步设备交互前的时间减去200纳秒。此外，时间同步设备的时间信息在到达时间交互型接口的过程中，也可能由于时间同步设备内部器件的处理过程而引入时间偏移量，比如100纳秒，此时，在时间同步设备在与其它时间同步设备进行时间交互时，第二处理单元可以对时间同步设备交互前的时间加上100纳秒。此外，时间同步设备与其它时间同步设备交互的时间在链路传递过程中也会存在时间误差，比如为100纳秒，此时，当时间同步设备在与其它时间同步设备进行时间交互时，第二处理单元可以对时间同步设备交互前的时间加上100纳秒，从而对链路时间偏差进行补偿。For example, when the time synchronization device performs time interaction with other time synchronization devices, it can determine the time offset, such as 600 nanoseconds, according to the time zone information of the geographical location where the time synchronization device and other time synchronization devices are located. After that, the second processing The unit can add 600 nanoseconds to the time before the time synchronization device interacts; when the time synchronization device interacts with other time synchronization devices, it can also use the pre-selected time standard between the time synchronization device and other time synchronization devices, For example, the selected time standard is Global Positioning System (Global Positioning System, GPS) time or Beidou time, and the time offset is determined, such as -200 nanoseconds. After that, the second processing unit can subtract the time before the time synchronization device interaction Go to 200 ns. In addition, when the time information of the time synchronization device reaches the time interactive interface, a time offset may also be introduced due to the processing of the internal components of the time synchronization device, such as 100 nanoseconds. At this time, when the time synchronization device is communicating with When other time synchronization devices perform time interaction, the second processing unit may add 100 nanoseconds to the time before the time synchronization device interaction. In addition, there will also be a time error during the link transmission process of the time synchronization device interacting with other time synchronization devices, for example, 100 nanoseconds. At this time, when the time synchronization device is performing time interaction with other time synchronization devices, the first The second processing unit can add 100 nanoseconds to the time before the time synchronization device interacts, so as to compensate for the link time deviation.
在具体实施过程中，时间同步设备还包括第三处理单元105，用于当时间同步设备输出时间同步后的时间信息时，对时间同步后的时间加载第二时间偏移量，之后，通过时间输出型接口将加载第二时间偏移量后的时间信息发送给下游节点。In a specific implementation process, the time synchronization device further includes a third processing unit 105, configured to load the second time offset to the time after time synchronization when the time synchronization device outputs the time information after time synchronization, and then pass the time The output interface sends the time information loaded with the second time offset to the downstream node.
可选地，当时间同步设备有多个时间输出型接口时，第二处理单元对各时间输出型接口加载的第二时间偏移量可以不同，以便时间同步设备可以为不同时间标准的地区服务。Optionally, when the time synchronization device has multiple time output interfaces, the second time offset loaded by the second processing unit on each time output interface may be different, so that the time synchronization device can serve regions with different time standards .
比如，时间同步后的时间信息在到达时间输出型接口的过程中，可能由于时间同步设备内部器件对时间信息的处理过程而引入一定的时间偏移量，比如60纳秒，这样，当时间同步设备输出时间同步后的时间信息时，第三处理单元可以对时间同步设备交互后的时间加上60纳秒，之后，再通过时间输出型接口将加载时间偏移量后的时间信息发送给下游节点。For example, when the time information after time synchronization reaches the time output interface, a certain time offset, such as 60 nanoseconds, may be introduced due to the processing of time information by the internal devices of the time synchronization device. In this way, when the time synchronization When the device outputs the time information after time synchronization, the third processing unit can add 60 nanoseconds to the time after the time synchronization device interaction, and then send the time information after loading the time offset to the downstream through the time output interface node.
在具体实施过程中，第一处理单元、第二处理单元和第三处理单元可以集成在同一个处理器中，也可以分别部署在单独的处理器中，在此不做限定。In a specific implementation process, the first processing unit, the second processing unit, and the third processing unit may be integrated into a same processor, or may be respectively deployed in separate processors, which is not limited herein.
如图2所示，为本申请实施例提供的时间同步网络架构示意图。其中，对于时间同步设备A，m、n、p是时间交互型接口，q为时间输出型接口。时间同步设备B、时间同步设备C、时间同步设备D与时间同步设备A在时间同步网络中处于同一级别，时间同步设备A和时间同步设备B还分别向下游节点输出时间信息。As shown in FIG. 2 , it is a schematic diagram of a time synchronization network architecture provided by the embodiment of the present application. Wherein, for the time synchronization device A, m, n, p are time interactive interfaces, and q is a time output interface. Time synchronization device B, time synchronization device C, time synchronization device D and time synchronization device A are at the same level in the time synchronization network, and time synchronization device A and time synchronization device B also output time information to downstream nodes respectively.
这里，时间同步设备A有3个时间交互型接口m、n、p，因此，可以通过这三个时间交互型接口同时与时间同步设备B、时间同步设备C、时间同步设备D进行时间交互，确定同步后的时间信息，进一步地，时间同步设备A可以通过时间输出型接口q向下游节点输出同步后的时间信息。Here, time synchronization device A has three time-interactive interfaces m, n, and p. Therefore, time interaction can be performed with time synchronization device B, time synchronization device C, and time synchronization device D through these three time-interaction interfaces. The synchronized time information is determined. Further, the time synchronization device A can output the synchronized time information to the downstream node through the time output interface q.
现有技术中的时间同步网络中，时间同步设备和时间接口仅适用于主从式架构，各个源服务设备的时间噪声偏差较大。而本申请实施例提出的时间同步设备，可以同时兼顾时间同步设备之间的相互校准和主从同步需求，在网络中可以灵活部署，因此，可以更好地满足时间同步网络中的时间同步需求。In the time synchronization network in the prior art, the time synchronization device and the time interface are only applicable to the master-slave architecture, and the time noise deviation of each source service device is relatively large. However, the time synchronization device proposed in the embodiment of this application can take into account the mutual calibration and master-slave synchronization requirements between time synchronization devices at the same time, and can be flexibly deployed in the network. Therefore, it can better meet the time synchronization requirements in the time synchronization network .
本申请实施例中的时间同步设备，包括时间交互型接口、时间输出型接口、及第一处理单元，其中，时间交互型接口用于与其它时间同步设备进行时间交互；第一处理单元用于根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息；时间输出型接口，用于输出时间同步后的时间信息。这样，在时间同步网络中处于同一级别的时间同步设备之间可以先进行时间同步，之后，再向下游节点输出同步后的时间，因此，可以提高时间同步网络的时间同步精度。The time synchronization device in the embodiment of the present application includes a time interaction interface, a time output interface, and a first processing unit, wherein the time interaction interface is used for time interaction with other time synchronization devices; the first processing unit is used for The time information after time synchronization is determined according to the time information exchanged through the time interaction interface; the time output interface is used to output the time information after time synchronization. In this way, time synchronization between time synchronization devices at the same level in the time synchronization network can be performed first, and then the synchronized time can be output to the downstream node. Therefore, the time synchronization accuracy of the time synchronization network can be improved.
实施例二Embodiment two
如图3所示，为本申请实施例提供的又一时间同步设备30结构图，包括：As shown in FIG. 3, another time synchronization device 30 structure diagram provided for the embodiment of the present application includes:
时间接口301，用于在切换到时间交互功能后，与其它时间同步设备进行时间交互；还用于在切换到时间输出功能后，输出时间同步后的时间信息。The time interface 301 is used to perform time interaction with other time synchronization devices after switching to the time interaction function; it is also used to output time information after time synchronization after switching to the time output function.
这样，一个时间接口可以同时具有时间交互和时间输出这两种功能。其中，时间交互功能是指时间接口向其它时间同步设备发送本地的时间信息，同时，接收其它时间同步设备发送的时间信息；时间输出功能是指将时间同步后的时间信息对外输出，不用于接收其它时间同步设备的时间信息(其它时间同步设备可以向时间输出型接口发送时间信息，但时间输出型接口并不处理)。此外，时间接口的物理类型可以为以太接口、DB9、同轴连接器等。In this way, a time interface can have both functions of time interaction and time output at the same time. Among them, the time interaction function means that the time interface sends local time information to other time synchronization devices, and at the same time, receives the time information sent by other time synchronization devices; the time output function refers to outputting time information after time synchronization, not for receiving Time information of other time synchronization devices (other time synchronization devices can send time information to the time output interface, but the time output interface does not process it). In addition, the physical type of the time interface may be Ethernet interface, DB9, coaxial connector, etc.
在具体实施过程中，时间接口若在预设时长(比如5分钟)内没有接收到其它时间同步设备发送的时间信息，则执行时间输出功能；若接收到其它时间同步设备发送的时间信息，则执行时间交互功能。In the specific implementation process, if the time interface does not receive the time information sent by other time synchronization devices within a preset period of time (such as 5 minutes), it will perform the time output function; if it receives the time information sent by other time synchronization devices, then Execution time interactive function.
第一处理单元302，用于根据通过时间接口交互的时间信息，确定进行时间同步后的时间信息。The first processing unit 302 is configured to determine time information after time synchronization according to the time information exchanged through the time interface.
这里，通过时间接口交互的时间信息可以包括其它同级时间同步设备发送的时间信息，以及时间同步设备30在与其它同级时间同步设备交互前确定的时间信息，其中时间同步设备30在与其它同级时间同步设备进行交互前确定的时间信息可以是根据以下信息确定的：Here, the time information exchanged through the time interface may include time information sent by other time synchronization devices of the same level, and time information determined by the time synchronization device 30 before interacting with other time synchronization devices of the same level, wherein the time synchronization device 30 communicates with other time synchronization devices The time information determined before peer time synchronization devices interact may be determined according to the following information:
该时间同步设备30本地保持的时间信息；和/或，The time information locally maintained by the time synchronization device 30; and/or,
通过除上述时间接口外的其它功能的接口获取的时间信息，比如，通过时间接收功能接口从卫星获取的时间信息。The time information obtained through other functional interfaces other than the above-mentioned time interface, for example, the time information obtained from satellites through the time receiving function interface.
也即，作为一种实现方式，第一处理单元可以结合从上述时间接收功能接口获取的时间信息、本地保持的时间信息(比如从内置的卫星接收机获取的时间信息)，以及其它同级时间同步设备发送的时间信息，确定进行时间同步后的时间信息。That is, as an implementation, the first processing unit can combine the time information obtained from the above-mentioned time receiving function interface, the locally maintained time information (such as the time information obtained from the built-in satellite receiver), and other time information of the same level Synchronize the time information sent by the device, and determine the time information after time synchronization.
可选地，该时间同步设备还包括第二处理单元303，用于当时间同步设备和其它时间同步设备进行时间交互时，对时间同步设备交互前的时间加载第一时间偏移量。相应地，时间接口将加载第一时间偏移量后的时间信息，发送给其它时间同步设备。Optionally, the time synchronization device further includes a second processing unit 303, configured to, when the time synchronization device performs time interaction with other time synchronization devices, load the first time offset to the time before the time synchronization device interaction. Correspondingly, the time interface sends the time information loaded with the first time offset to other time synchronization devices.
可选地，该时间同步设备还包括第三处理单元304，用于当时间同步设备输出时间同步后的时间信息时，对时间同步后的时间加载第二时间偏移量。相应地时间接口将加载第二时间偏移量后的时间信息发送给下游节点。Optionally, the time synchronization device further includes a third processing unit 304, configured to, when the time synchronization device outputs the time synchronization information, load the second time offset to the time synchronization. Correspondingly, the time interface sends the time information loaded with the second time offset to the downstream node.
在具体实施过程中，第一处理单元、第二处理单元和第三处理单元可以集成在同一个处理器中，也可以分别部署在单独的处理器中，在此不做限定。In a specific implementation process, the first processing unit, the second processing unit, and the third processing unit may be integrated into a same processor, or may be respectively deployed in separate processors, which is not limited herein.
本申请实施例中的时间同步设备，包括时间交互型接口、时间输出型接口、及第一处理单元，其中，时间交互型接口用于与其它时间同步设备进行时间交互；第一处理单元用于根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息；时间输出型接口，用于输出时间同步后的时间信息。这样，在时间同步网络中处于同一级别的时间同步设备之间可以先进行时间同步，之后，再向下游节点输出同步后的时间，因此，可以提高时间同步网络的时间同步精度。The time synchronization device in the embodiment of the present application includes a time interaction interface, a time output interface, and a first processing unit, wherein the time interaction interface is used for time interaction with other time synchronization devices; the first processing unit is used for The time information after time synchronization is determined according to the time information exchanged through the time interaction interface; the time output interface is used to output the time information after time synchronization. In this way, time synchronization between time synchronization devices at the same level in the time synchronization network can be performed first, and then the synchronized time can be output to the downstream node. Therefore, the time synchronization accuracy of the time synchronization network can be improved.
实施例三Embodiment Three
基于同一发明构思，本申请实施例中还提供了一种与时间同步设备对应的时间同步方法，由于该方法解决问题的原理与本申请实施例时间同步设备相似，因此该方法的实施可以参见设备的实施，重复之处不再赘述。Based on the same inventive concept, the embodiment of the present application also provides a time synchronization method corresponding to the time synchronization device. Since the problem-solving principle of this method is similar to that of the time synchronization device in the embodiment of the present application, the implementation of this method can be found in the device The implementation of the implementation, the repetition will not repeat them.
如图4所示，为本申请实施例提供的时间同步方法流程图，包括以下步骤：As shown in Figure 4, the flowchart of the time synchronization method provided by the embodiment of the present application includes the following steps:
S401：第一时间同步设备通过时间交互型接口与其它时间同步设备进行时间交互。S401: The first time synchronization device performs time interaction with other time synchronization devices through a time interaction interface.
S402：根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息。S402: Determine time information after time synchronization according to the time information exchanged through the time interactive interface.
S403：通过时间输出型接口输出时间同步后的时间信息。S403: Output time information after time synchronization through a time output interface.
在具体实施过程中，若在预设时长时间内，比如5分钟，交互型接口没有接收到其它时间同步设备发送的时间信息，可以将时间交互型接口切换为时间输出型接口，之后，执行时间输出型接口输出时间同步后的时间信息的功能；时间输出型接口若接收到其它时间同步设备发送的时间信息，可以将时间输出型接口切换为时间交互型接口，之后，执行时间交互型接口与其它时间同步设备进行时间交互的功能。In the specific implementation process, if the interactive interface does not receive the time information sent by other time synchronization devices within a preset period of time, such as 5 minutes, the time interactive interface can be switched to the time output interface, and then the execution time The function of the output interface to output the time information after time synchronization; if the time output interface receives the time information sent by other time synchronization equipment, it can switch the time output interface to the time interactive interface, and then execute the time interactive interface and The function of other time synchronization devices to perform time interaction.
可选地，当时间同步设备和其它时间同步设备进行时间交互时，时间同步设备还可以对交互前的时间加载第一时间偏移量，之后，通过时间交互型接口将加载第一时间偏移量后的时间信息，发送给其它时间同步设备。Optionally, when the time synchronization device interacts with other time synchronization devices, the time synchronization device can also load the first time offset to the time before the interaction, and then load the first time offset through the time interactive interface The measured time information is sent to other time synchronization devices.
可选地，当时间同步设备输出时间同步后的时间信息时，时间同步设备还可以对时间同步后的时间加载第二时间偏移量，之后，通过时间输出型接口，将加载第二时间偏移量后的时间信息发送给下游节点。Optionally, when the time synchronization device outputs the time information after time synchronization, the time synchronization device can also load the second time offset to the time after time synchronization, and then, through the time output interface, load the second time offset The shifted time information is sent to the downstream node.
本申请实施例中的时间同步方法，第一时间同步设备通过时间交互型接口与其它时间同步设备进行时间交互，再根据通过时间交互型接口交互的时间信息，确定进行时间同步后的时间信息，最后通过时间输出型接口输出时间同步后的时间信息。这样，在时间同步网络中处于同一级别的时间同步设备之间可以先进行时间同步，之后，再向下游节点输出同步后的时间，因此，可以提高时间同步网络的时间同步精度。In the time synchronization method in the embodiment of the present application, the first time synchronization device performs time interaction with other time synchronization devices through the time interaction interface, and then determines the time information after time synchronization according to the time information interacted through the time interaction interface, Finally, the time information after time synchronization is output through the time output interface. In this way, time synchronization between time synchronization devices at the same level in the time synchronization network can be performed first, and then the synchronized time can be output to the downstream node. Therefore, the time synchronization accuracy of the time synchronization network can be improved.
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
本申请是参照根据本申请实施例的方法、装置(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processing unit of other programmable data processing equipment to produce a machine such that the instructions executed by the processing unit of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。While preferred embodiments of the present application have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the application.
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587784A (en) * | 2018-12-27 | 2019-04-05 | 广州供电局有限公司 | Clock synchronous communication system and its method for synchronizing time |
| CN111480374A (en) * | 2018-10-17 | 2020-07-31 | Oppo广东移动通信有限公司 | Data packet transmission method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765199A (en) * | 2008-12-24 | 2010-06-30 | 中国移动通信集团公司 | Communication system and time synchronization method in system and OTN equipment |
| CN102833027A (en) * | 2012-09-21 | 2012-12-19 | 烽火通信科技股份有限公司 | Synchronization status monitoring method based on time offset |
| CN103166729A (en) * | 2013-01-30 | 2013-06-19 | 华为技术有限公司 | Clock synchronization method and equipment |
| CN103916950A (en) * | 2012-12-31 | 2014-07-09 | 中兴通讯股份有限公司 | Time synchronization method and system |
| CN105281885A (en) * | 2014-07-25 | 2016-01-27 | 中兴通讯股份有限公司 | Time synchronization method and device used for network equipment and time synchronization server |
| US20160085479A1 (en) * | 2014-09-22 | 2016-03-24 | Freescale Semiconductor, Inc. | Interface system and method |
-
2016
- 2016-11-30 CN CN201611089875.9A patent/CN108123773B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765199A (en) * | 2008-12-24 | 2010-06-30 | 中国移动通信集团公司 | Communication system and time synchronization method in system and OTN equipment |
| CN102833027A (en) * | 2012-09-21 | 2012-12-19 | 烽火通信科技股份有限公司 | Synchronization status monitoring method based on time offset |
| CN103916950A (en) * | 2012-12-31 | 2014-07-09 | 中兴通讯股份有限公司 | Time synchronization method and system |
| CN103166729A (en) * | 2013-01-30 | 2013-06-19 | 华为技术有限公司 | Clock synchronization method and equipment |
| CN105281885A (en) * | 2014-07-25 | 2016-01-27 | 中兴通讯股份有限公司 | Time synchronization method and device used for network equipment and time synchronization server |
| US20160085479A1 (en) * | 2014-09-22 | 2016-03-24 | Freescale Semiconductor, Inc. | Interface system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480374A (en) * | 2018-10-17 | 2020-07-31 | Oppo广东移动通信有限公司 | Data packet transmission method and device |
| CN109587784A (en) * | 2018-12-27 | 2019-04-05 | 广州供电局有限公司 | Clock synchronous communication system and its method for synchronizing time |
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|---|---|
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