WO2009146611A1 - 具有时钟信息报文的处理方法、装置及系统 - Google Patents

具有时钟信息报文的处理方法、装置及系统 Download PDF

Info

Publication number
WO2009146611A1
WO2009146611A1 PCT/CN2009/070425 CN2009070425W WO2009146611A1 WO 2009146611 A1 WO2009146611 A1 WO 2009146611A1 CN 2009070425 W CN2009070425 W CN 2009070425W WO 2009146611 A1 WO2009146611 A1 WO 2009146611A1
Authority
WO
WIPO (PCT)
Prior art keywords
packet
message
clock
configuration information
information
Prior art date
Application number
PCT/CN2009/070425
Other languages
English (en)
French (fr)
Inventor
孙文华
王晓波
李丙博
徐文广
阳生丙
邓友好
王继辉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2009146611A1 publication Critical patent/WO2009146611A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • H04J3/0635Clock or time synchronisation in a network
    • H04J3/0685Clock or time synchronisation in a node; Intranode synchronisation
    • H04J3/0697Synchronisation in a packet node
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • H04J3/0635Clock or time synchronisation in a network
    • H04J3/0638Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658Clock or time synchronisation among packet nodes
    • H04J3/0661Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0667Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a processing method, apparatus, and system for a clock information message. Background technique
  • the 1588 protocol is a precision time protocol (PTP) of a network measurement and control system. It can ensure accurate clock synchronization between traditional asynchronous Ethernet networks and transmit accurate time stamps through Ethernet 1588 protocol packets. Achieve accurate clock synchronization of the Ethernet network.
  • PTP precision time protocol
  • the application scenario of the 1588 protocol includes a master clock device and a slave clock device.
  • the slave clock device synchronizes (sync) messages of the master clock device to perform frequency synchronization, and the slave device sends an end-to-end delay request (delay_req) message and the receiving master.
  • the clock device responds with an end-to-end delay response (delay-resp) message message to implement time synchronization.
  • delay_req end-to-end delay request
  • delay-resp end-to-end delay response
  • the embodiment of the invention provides a processing method, device and system for processing a clock information message, which reduces the amount of resources occupied and reduces the cost.
  • a processing method for a clock information message comprising:
  • a processing device with a clock information message comprising:
  • An interface unit configured to receive a message with clock information
  • a packet identifier obtaining unit configured to obtain a packet identifier of the packet
  • the clock processing configuration information acquiring unit is configured to obtain corresponding clock processing configuration information according to the packet identifier of the packet;
  • the processing unit is configured to process the packet according to the acquired clock processing configuration information.
  • a processing system with a clock information message including:
  • An interface device configured to receive a message with clock information
  • Processing device comprising:
  • a packet identifier obtaining unit configured to obtain a packet identifier of the packet
  • the clock processing configuration information acquiring unit is configured to obtain corresponding clock processing configuration information according to the packet identifier of the packet;
  • the processing unit is configured to process the packet according to the acquired clock processing configuration information.
  • obtaining different clock processing configuration information by using different packet identifiers, and processing the packets can effectively reduce the amount of resources occupied and reduce the cost.
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for processing a clock information packet according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a second embodiment of a method for processing a clock information packet according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of packet processing of a receiving direction interface device in a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of packet processing of a receiving direction processing apparatus in a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention Schematic diagram of packet processing of the direction interface device;
  • FIG. 7 is a schematic structural diagram of a first embodiment of a processing apparatus for a clock information packet according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a second embodiment of a processing apparatus for a clock information message according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a first embodiment of a processing system with a clock information packet according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a second embodiment of a processing system with a clock information packet according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for processing a clock information packet according to an embodiment of the present invention. As shown in FIG. 1, the embodiment may include the following steps:
  • Step 101 Receive a message with clock information.
  • Step 102 Obtain a packet identifier of the packet.
  • Step 103 Acquire corresponding clock processing configuration information according to the packet identifier of the packet.
  • Step 104 Process the configuration information according to the obtained clock processing information, and process the packet.
  • the packet identifier can be internal to the packet or independent of the packet. For example, if the packet identifier is a physical port number, it can be written in the packet. After the packet is parsed, the packet can be obtained as a single message. If the packet identifier is an IP address or a media access control (MAC) address, it can be located inside the packet.
  • the IP address or MAC address is the source address, that is, the IP address or MAC address of the sender of the packet.
  • the clock processing configuration information can process configuration information or process information from the clock.
  • the packet can be a 1588 protocol packet, and the clock processing configuration information is a 1588 protocol data set.
  • FIG. 2 is a schematic flowchart of a second embodiment of a method for processing a clock information packet according to an embodiment of the present invention. As shown in FIG. 2, the embodiment may include the following steps:
  • Step 201 The processing device receives a packet of a physical port that is requested by the interface device, where the packet carries a corresponding physical port number and corresponding packet data.
  • Step 202 The processing device matches the 1588 protocol data set corresponding to the physical port number according to the physical port number, and updates the 1588 protocol data set to the current data set.
  • the packet may further carry a packet header identifier and delay information in the interface device before the packet is scheduled by the processing device, and the processing device sends the packet according to the packet header identifier and the delay information.
  • the timestamp of entering the device, the delay information may be a value of a counter before the message is scheduled, or may be a ns time value that is retained before the message is scheduled. For example, the message is retained for 100 ns before being scheduled.
  • the two methods are the same, and the embodiment of the present invention is described by a counter value.
  • the foregoing packet may not carry the packet header identifier and the delay information before the packet is processed by the processing device, and may also directly carry the timestamp of the packet entering the device, so as to accurately identify the identifier. The time the text entered the device.
  • the processing device after receiving the packet of the physical port requested by the interface device, matches the physical port number carried in the packet to match the 1588 protocol data set corresponding to the physical port number, and The 1588 protocol data set is updated to the current data set, so that more than one physical port can be supported at the same time, which reduces the amount of resources occupied and reduces the cost.
  • FIG. 3 is a schematic flowchart of a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention. As shown in FIG. 3, the embodiment may include the following steps:
  • Step 301 The interface device receives the packet of the physical port, and caches the packet respectively.
  • Step 302 The interface device requests the processing device to schedule the buffered packet, where the packet scheduled to be carried carries The packet header identifier, the corresponding physical port number, the packet data, and the delay information before the packet is scheduled;
  • Step 303 The processing device receives the packet of the physical port that the interface device requests to be scheduled.
  • Step 305 The processing device is scheduled according to the packet header identifier and the packet carried in the packet.
  • the previous delay information obtains the timestamp of the packet entering the device, and the processing device schedules the corresponding timestamp when scheduling the message;
  • Step 306 Perform 1588 protocol processing on the packet data according to the timestamp of the packet entering the device, which may include: filtering the packet data, obtaining 1588 protocol packet data, and entering the device according to the time of the packet.
  • the stamp performs the corresponding 1588 protocol processing on the 1588 protocol packet data.
  • the 1588 protocol data set includes the following information:
  • Port— identity port identifier
  • Port_state port status
  • Log_min_mean_delay_req_interval minimum average packet interval for the port delay_req message
  • Peer_mean_path delay: average path delay in port peer-to-peer (P2P) delay mode
  • Log_mean_announce_interval the average outgoing interval of the port declaration (advertise) message
  • Announce_receipt_timeout The receiving timeout interval of the port announce message; log_mean_sync_interval: the average outgoing interval of the port sync message;
  • Delay-mechanism port delay mode
  • Log_min_mean_pdelay_req_interval the minimum average delivery interval of the port delay request ( pdelay_req ) message;
  • Version—number The 1588 version number supported by the port.
  • Delay_sequence- id sync port end-to-end delay (delay) The sequence of the message 'J number; pdelay_sequence_id sync: port point-to-point delay (pdelay) The sequence number of the message; announce_sequence-id sync: the serial number of the port announce message Management-sequence-id sync: The sequence of the ticket announcement message 'J number; signaling_sequence_id sync: The serial number of the port announce message.
  • the interface device corresponding to each physical port is respectively sent to the processing device in the receiving direction.
  • the processing device requests to schedule a packet of the corresponding physical port, the processing device updates its internal 1588 related data set according to the physical port number when receiving the message requesting the scheduling, and the processing of the other processing is the same as that of the processing device of the existing solution, thereby realizing
  • a processing device can support more than one physical port at the same time, which reduces the amount of resources occupied and reduces the cost.
  • the processing device may generate a packet carrying the physical port number, and the interface device may schedule the packet data in the processing device to the designated physical port according to the physical port number indicated by the processing device. Send it.
  • FIG. 4 is a schematic diagram of packet processing of a receiving direction interface device in a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention.
  • FIG. 4 has four Gigabit (GE) physical ports.
  • GE Gigabit
  • each port caches the received 1588 protocol packets and records the packet arrival time.
  • the processing device side can schedule the packets of the four GE physical ports with a bandwidth of not less than 4G.
  • the interface device may also notify the processing device that the message is scheduled to be processed by the processing device, and may also inform the processing device that the difference between the arrival time of the message and the message is the delay information @t of the corresponding physical port, and the processing device The timestamp of this delay information @t is subtracted, and the timestamp of the accurate message entering the device is obtained.
  • the main information sent by the interface device to the processing device is shown in the table below:
  • FIG. 5 is a schematic diagram of packet processing of a receiving direction processing apparatus in a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention.
  • the processing apparatus obtains a physical port number corresponding to 1588 according to a physical port number.
  • the protocol data set, this data set is updated to the current data set, and then processed by the 1588 protocol.
  • FIG. 6 is a schematic diagram of packet processing of a sending direction interface device in a third embodiment of a method for processing a clock information packet according to an embodiment of the present invention.
  • a processing device may generate a physical port.
  • the interface device may schedule the message data in the processing device to be sent to the designated physical port according to the physical port number indicated by the processing device.
  • the device has 4 GE interfaces supporting the 1588 protocol at the same time.
  • the processing capacity of the processing device is 4G.
  • the packet data pkt2 of the physical port 2 first arrives at the corresponding interface device, and the physical channel 2 resident time counter port2_counter is set to 0 at the arrival time of the message data pkt2, and the counter port2_counter starts counting, until The message data pkt2 is scheduled by the processing device; after receiving a whole packet, the interface device requests the processing device to schedule the message pkt2; during this period, the interface devices corresponding to the other physical ports also receive the message data ptk1 successively. Pkt3, pkt4; The processing for port1_counter, port3_counter, port4_counter is the same as that of physical channel 2;
  • the processing device starts scheduling the message data pkt2 of the physical port 2 according to the scheduling request of each interface device, and the processing device records the timestamp STJemp when scheduling the message data pkt2 of the physical port 2, and subtracts the timestamp from the port2_counter representation.
  • the processing device After receiving the packet data pkt2 of the physical port 2, the processing device starts scheduling the packet data pkt4 of the physical port 4, and records the time @t4 indicated by the timestamps STJemp and port4_counter to obtain an accurate time stamp of the pkt4 entering the device.
  • the 1588 protocol data set of the port number 4 is obtained, and the data set is updated to the current data set, and then the 1588 protocol is processed;
  • the processing device processes the packet data pktl of the physical port 1 and the packet data pkt3 of the physical port 3 in the same manner as the pkt2/pkt4, and the processing device continuously schedules four port data to support the four physical ports.
  • the processing device can generate a packet carrying the physical port number, and the interface device can schedule the packet data in the processing device to send to the designated physical port according to the physical port number indicated by the processing device.
  • the packet scheduled in step 302 in this embodiment may not carry the packet header identifier and the delay information before the packet is scheduled, and may only directly carry the timestamp of the packet entering the device, that is, Each packet is marked with a correct timestamp on the interface to accurately identify the time when the packet enters the device.
  • the processing device schedules the corresponding timestamp when scheduling the packet. Then, step 305 can be omitted accordingly.
  • the interface type in this embodiment may also be FE (10M or 100M) or 10GE, and the bandwidth processing capability of the processing device and the number of supported ports may be changed according to requirements.
  • FIG. 7 is a schematic structural diagram of a first embodiment of a device for processing a clock information packet according to an embodiment of the present invention.
  • the embodiment may include an interface unit 71, a packet identifier obtaining unit 72, and clock processing configuration information.
  • the interface unit 71 is configured to receive the packet with the clock information.
  • the packet identifier obtaining unit 72 is configured to obtain the packet identifier of the packet from the processing unit 74.
  • the clock processing configuration information acquiring unit 73 is configured to use the packet according to the packet.
  • the identifier information acquired by the identifier acquisition unit 72 acquires the corresponding master clock processing configuration information or the slave clock processing configuration information.
  • the processing unit 74 is configured to process the clock processing configuration information acquired by the clock processing configuration information acquiring unit 73. ⁇ .
  • the packet identifier obtained by the packet identifier obtaining unit 72 may be internal to the packet or may be independent of the packet. For example, if the packet identifier is a physical port number, it can be located in the packet. After the packet is parsed by the processing unit, the packet can be obtained as a message independently of the packet. The processing unit does not need to parse the packet. If the packet identifier is an IP address or a media access control (MAC) address, it can be located inside the packet. The IP address or MAC address is the source address, that is, the IP address or MAC address of the sender of the packet.
  • MAC media access control
  • the clock processing configuration information can be configured as the primary clock or configured from the clock processing. Information.
  • the packet can be a 1588 protocol packet, and the clock processing configuration information is a 1588 protocol data set.
  • the interface that receives the clock information is received by the interface unit, and the clock processing configuration information acquiring unit obtains the identifier of the ⁇ ⁇ ⁇ ⁇ ⁇ based on the packet received by the packet identifier obtaining unit from the interface unit.
  • the processing unit obtains the corresponding clock processing configuration information, and the processing unit processes the message according to the clock processing configuration information, so that one packet processing device can support more than one physical port at the same time, which reduces the amount of resources occupied and reduces the cost.
  • FIG. 8 is a schematic structural diagram of a second embodiment of a processing apparatus for a clock information packet according to an embodiment of the present invention. As shown in FIG. 8, compared with the previous embodiment, if the identifier is not written in the corresponding text, The packet identifier is independent of the packet, and the packet identifier is a single message.
  • the packet identifier obtaining unit 72 in this embodiment can also obtain the packet identifier of the packet directly from the corresponding message in the interface unit 71.
  • the foregoing embodiment of the present invention may further include a delay information recording unit and a delay information adding unit.
  • the delay information recording unit is configured to record delay information before the message is scheduled; the delay information adding unit is configured to add the delay information to the message.
  • the method further includes a delay information acquiring unit, configured to acquire delay information before the message is scheduled.
  • FIG. 9 is a schematic structural diagram of a first embodiment of a processing system with a clock information packet according to an embodiment of the present invention.
  • the embodiment may include an interface device 91 and a processing device 90.
  • the processing device 90 may include a message identifier obtaining unit 92, a clock processing configuration information acquiring unit 93, and a processing unit 94.
  • the interface device 91 is configured to receive the packet with the clock information.
  • the packet identifier obtaining unit 92 is configured to obtain the packet identifier of the packet from the processing unit 94.
  • the clock processing configuration information acquiring unit 93 is configured to use the packet according to the packet.
  • the message identifier acquired by the identifier acquisition unit 92 acquires the corresponding master clock processing configuration information or the slave clock processing configuration information.
  • the processing unit 94 is configured to process the clock processing configuration information acquired by the clock processing configuration information acquiring unit 93. Yan Wen.
  • the packet identifier can be internal to the packet or independent of the packet. For example, if the packet identifier is a physical port number, it can be located in the packet. After the packet is parsed by the processing unit, the packet can be obtained as a message independently of the packet. The processing unit does not need to parse the packet. Obtained directly from the processing unit; if the packet identifier is an IP address or a Media Access Control (MAC) address, it can be located inside the packet, and the IP address or MAC address is the source address, that is, the sender of the packet. IP address or MAC address.
  • IP address or MAC address IP address or MAC address.
  • the clock processing configuration information can process configuration information or process information from the clock.
  • the packet can be a 1588 protocol packet, and the clock processing configuration information is a 1588 protocol data set.
  • the packet may further carry a packet header identifier and delay information before the packet is scheduled, and the processing unit may further send the packet to the device timestamp according to the identifier and the delay information.
  • the delay information is used to obtain a timestamp of the packet entering the device.
  • the delay information may be a counter or a ns time value. The two methods are the same. The embodiment of the present invention describes the counter value.
  • the foregoing packet may not carry the packet header identifier and the delay information before the packet is scheduled, and may also directly carry the timestamp of the packet entering the device, so as to accurately identify the packet entering the device.
  • the message with the clock information is received by the interface device, and the clock processing configuration information obtaining unit obtains the 4 ⁇ text identifier of the message according to the message received by the message identifier obtaining unit from the interface device.
  • the processing unit obtains the corresponding clock processing configuration information, and the processing unit processes the message according to the clock processing configuration information, so that one packet processing device can support more than one physical port at the same time, which reduces the amount of resources occupied and reduces the cost.
  • FIG. 10 is a schematic structural diagram of a second embodiment of a processing system for receiving a clock information packet according to an embodiment of the present invention. As shown in FIG. 10, compared with the previous embodiment, if the identifier is not written in the corresponding text, The packet identifier is independent of the message, and the packet identifier is a single message. The packet identifier obtaining unit 92 in this embodiment can also obtain the packet identifier of the packet directly from the corresponding message in the interface device 91.
  • the processing device may further include a delay information recording unit and a delay information adding unit.
  • the delay information recording unit is configured to record delay information before the message is scheduled; the delay information adding unit is configured to add the delay information to the message.
  • the delay information acquiring unit may further be configured to obtain delay information before the message is scheduled.
  • the interface device requests the processing device to schedule the packet of the corresponding physical port, and the processing device updates the internal 1588 related data set according to the physical port number when receiving the message requesting the scheduling, and other processing.
  • the processing flow of the processing device of the existing solution is the same, Therefore, a message processing device can simultaneously support more than one physical port, which reduces the amount of resources occupied and reduces the cost.
  • the foregoing embodiment of the present invention can be applied to time synchronization implemented by sending a delay_req message from a clock device and a delay_resp message received by a master clock device in an end-to-end (E2E) mode, and can also be used for step-by-step measurement in P2P mode.
  • Link synchronization to achieve time synchronization but is not limited to this.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Description

具有时钟信息报文的处理方法、 装置及系统 技术领域
本发明涉及通信技术领域, 尤其是一种具有时钟信息报文的处理方法、 装置及系统。 背景技术
1588协议是一种网络测量和控制系统的精确时间协议( Precision Time Protocol, 简称 PTP ), 可以保证传统异步以太网络之间的时钟精确同步, 通 过以太网的 1588协议报文传送精确时间戳, 来达到以太网络的准确时钟同 步。
1588协议的应用场景中包括主时钟设备和从时钟设备,从时钟设备通过 接收主时钟设备的同步 (sync ) 消息来进行频率同步, 从时钟设备发送端对 端延迟请求 (delay_req ) 消息和接收主时钟设备回应的端对端延迟响应 ( delay—resp ) 消息报文来实现时间同步。 有多个物理端口都需要支持 1588协议的时候,就需要每个支持 1588协议的 端口都加上一套 1588协议处理逻辑。 由于每增加一个需要支持 1588协议的 物理端口就需要增加一套逻辑, 资源占有量太大, 导致多物理端口实现成本 较高。 实时时钟需要同时支持所有物理端口的时间戳请求, 需要通过调度程 序来实现, 而且实现复杂。 发明内容
本发明实施例提供一种具有时钟信息报文的处理方法、 装置及系统, 减 少资源的占有量, 降低成本。
一种具有时钟信息报文的处理方法, 包括:
接收具有时钟信息的报文;
获取所述报文的报文标识;
根据所述报文的报文标识获取对应的时钟处理配置信息; 根据获取的时钟处理配置信息, 处理所述报文。
一种具有时钟信息报文的处理装置, 包括:
接口单元, 用于接收具有时钟信息的报文;
报文标识获取单元, 用于获取所述报文的报文标识;
时钟处理配置信息获取单元, 用于根据所述报文的报文标识获取对应的 时钟处理配置信息;
处理单元, 用于根据获取的时钟处理配置信息, 处理所述报文。
一种具有时钟信息报文的处理系统, 包括:
接口装置, 用于接收具有时钟信息的报文;
处理装置, 包括:
报文标识获取单元, 用于获取所述报文的报文标识;
时钟处理配置信息获取单元, 用于根据所述报文的报文标识获取对应的 时钟处理配置信息;
处理单元, 用于根据获取的时钟处理配置信息, 处理所述报文。
由上述技术方案可知, 通过不同的报文标识获取不同的时钟处理配置信 息, 进而处理报文, 可以有效的减少了资源的占有量, 降低了成本。 附图说明
图 1为本发明实施例具有时钟信息报文的处理方法的第一实施例的流程 示意图;
图 2为本发明实施例具有时钟信息报文的处理方法的第二实施例的流程 示意图;
图 3为本发明实施例具有时钟信息报文的处理方法的第三实施例的流程 示意图;
图 4为本发明实施例具有时钟信息报文的处理方法的第三实施例中接收 方向接口装置的报文处理示意图;
图 5为本发明实施例具有时钟信息报文的处理方法的第三实施例中接收 方向处理装置的报文处理示意图;
图 6为本发明实施例具有时钟信息报文的处理方法的第三实施例中发送 方向接口装置的报文处理示意图;
图 7为本发明实施例具有时钟信息报文的处理装置的第一实施例的结构 示意图;
图 8为本发明实施例具有时钟信息报文的处理装置的第二实施例的结构 示意图;
图 9为本发明实施例具有时钟信息报文的处理系统的第一实施例的结构 示意图;
图 10 为本发明实施例具有时钟信息报文的处理系统的第二实施例的结 构示意图。 具体实施方式
图 1为本发明实施例具有时钟信息报文的处理方法的第一实施例的流程 示意图, 如图 1所示, 本实施例可以包括以下步骤:
步骤 101、 接收具有时钟信息的报文;
步骤 102、 获取所述报文的报文标识;
步骤 103、 根据所述报文的报文标识获取对应的时钟处理配置信息; 步骤 104、 根据获取的时钟处理配置信息, 处理所述报文。
其中的报文标识可以是报文内部的, 也可以独立于报文。 例如: 如果报 文标识是物理端口号, 则可以写入报文中, 经过解析该报文之后获取, 还可 以独立于报文即报文标识单独为一条消息, 无需解析该报文直接获取; 如果 报文标识是 IP地址或媒体访问控制(MAC )地址, 则可以位于报文内部, IP 地址或 MAC地址是源地址, 即报文发送方的 IP地址或 MAC地址。
其中的时钟处理配置信息可以为主时钟处理配置信息或从时钟处理配置 信息。 其中的报文可以为 1588协议报文, 则时钟处理配置信息为 1588协议 数据集。
本实施例, 通过接收到具有时钟信息的报文, 根据获取到的该报文的报 文标识获取对应的时钟处理配置信息, 根据时钟处理配置信息, 处理该报文, 从而实现了一个报文处理装置可以同时支持一个以上的物理端口, 减少了资 源的占有量, 降低了成本。 图 2为本发明实施例具有时钟信息报文的处理方法的第二实施例的流程 示意图, 如图 2所示, 本实施例可以包括以下步骤:
步骤 201、 处理装置接收到接口装置所请求调度的物理端口的报文, 所 述报文携带有对应的物理端口号和对应的报文数据;
步骤 202、 处理装置根据所述物理端口号匹配出所述物理端口号对应的 1588协议数据集, 并将所述 1588协议数据集更新为当前的数据集。
进一步地, 其中的报文还可以携带有报文头标识和所述报文被处理装置 调度之前即在接口装置中的延迟信息, 处理装置根据报文头标识和延迟信息 来给所述报文打进入设备的时间戳, 该延迟信息可以是所述报文被调度之前 的计数器的数值, 也可以是所述报文被调度之前滞留的 ns时间值, 比如, 报 文被调度之前滞留了 100ns, 两种方式处理相同, 本发明实施例用计数器值 描述。
此外, 上述报文也可以不携带报文头标识和所述报文被处理装置调度之 前的延迟信息, 还可以仅直接携带有所述报文进入设备的时间戳, 用以精确 的标识 4艮文进入设备的时间。
本实施例中处理装置接收到接口装置所请求调度的物理端口的报文后, 才艮据所述 ·艮文中所携带的物理端口号匹配出所述物理端口号对应的 1588协 议数据集, 并将所述 1588协议数据集更新为当前的数据集, 从而可以实现 同时支持一个以上物理端口, 减少了资源的占有量, 降低了成本。
图 3为本发明实施例具有时钟信息报文的处理方法的第三实施例的流程 示意图, 如图 3所示, 本实施例可以包括以下步骤:
步骤 301、 接口装置接收物理端口的报文, 分别对所述报文进行緩存; 步骤 302、 接口装置分别向处理装置请求对所述经过緩存的报文进行调 度, 该请求调度的报文携带有报文头标识、 对应的物理端口号、 报文数据、 所述报文被调度之前的延迟信息;
步骤 303、 处理装置接收接口装置所请求调度的物理端口的报文; 步骤 304、 处理装置根据所述物理端口号匹配出所述物理端口号对应的 1588协议数据集, 并将所述 1588协议数据集更新为当前的数据集;
步骤 305、 处理装置根据所述报文中所携带的报文头标识和报文被调度 之前的延迟信息得到所述报文进入设备的时间戳, 通过处理装置在调度报文 的时候调度相应的时间戳;
步骤 306、根据所述报文进入设备的时间戳对报文数据进行 1588协议处 理, 具体可以包括: 对报文数据进行过滤, 得到 1588协议报文数据, 并根 据所述报文进入设备的时间戳对所述 1588协议报文数据进行相应的 1588协 议处理。
其中的 1588协议数据集中包括以下信息:
port— identity: 端口标识
port_state: 端口状态
log_min_mean_delay_req_interval: 端口 delay_req消息的最小平均发 包间隔;
peer_mean_path— delay: 端口点对点(P2P )延迟模式下的平均路径延 迟;
log_mean_announce_interval: 端口声明( announce )消息的平均发包 间隔;
announce_receipt_timeout: 端口 announce消息的接收超时间隔; log_mean_sync— interval: 端口 sync消息的平均发包间隔;
delay—mechanism: 端口延迟模式;
log_min_mean_pdelay_req_interval : 端 口 点 点 延 迟 请 求 ( pdelay_req ) 消息的最小平均发包间隔; 以及
version—number: 端口支持的 1588版本号。
另外为了实现功能根据协议还需要定义包含以下信息:
sync— sequence— id: 端口 sync消息的序列号;
delay—sequence— id sync: 端口端对端延迟(delay ) 消息的序歹 'J号; pdelay_sequence_id sync: 端口点对点延迟( pdelay ) 消息的序列号; announce— sequence— id sync: 端口 announce消息的序列号; management—sequence—id sync: 端口 announce消息的序歹 'J号; signaling_sequence_id sync: 端口 announce消息的序列号。
本实施例在接收方向上, 每个物理端口对应的接口装置分别向处理装置 请求调度相应物理端口的报文, 处理装置在接收到请求调度的报文时根据物 理端口号更新其内部的 1588相关数据集, 其它处理和现有方案的处理装置 的处理流程是一样, 从而实现了一个处理装置可以同时支持一个以上的物理 端口, 减少了资源的占有量, 降低了成本。
进一步地, 本实施例在发送方向, 处理装置可以产生的携带有物理端口 号的报文, 接口装置可以根据处理装置所指示的物理端口号来调度处理装置 里的报文数据到指定的物理端口进行发送。
图 4为本发明实施例具有时钟信息报文的处理方法的第三实施例中接收 方向接口装置的报文处理示意图, 如图 4所示, 图 4以 4个千兆(GE )的物 理端口为例, 在接收方向, 各个端口对收到的 1588协议报文进行緩存, 并 记录报文到达时间。为了保证带宽,处理装置侧可以用不低于 4G的带宽对 4 个 GE的物理端口的报文进行调度。 接口装置在报文被调度进处理装置进行 处理的同时, 也可以告知处理装置 ·艮文此刻和 ·艮文到达时间的差值即 ·艮文在 对应的物理端口的延迟信息 @t, 处理装置的时间戳将此延迟信息 @t减掉, 就得到了精确的报文进入设备的时间戳。 接口装置送给处理装置的主要信息 ^口下表所示:
处理装置获取到的信息列表
Figure imgf000008_0001
图 5为本发明实施例具有时钟信息报文的处理方法的第三实施例中接收 方向处理装置的报文处理示意图, 如图 5所示, 处理装置根据物理端口号得 到对应物理端口号的 1588协议数据集, 将此数据集更新为当前的数据集, 再进行 1588协议处理。 图 6为本发明实施例具有时钟信息报文的处理方法的第三实施例中发送 方向接口装置的报文处理示意图, 如图 6所示, 在发送方向, 处理装置可以 产生的携带有物理端口号的报文, 接口装置可以根据处理装置所指示的物理 端口号来调度处理装置里的报文数据到指定的物理端口进行发送。
再如图 4、 图 5和图 6所示, 详细的处理步骤说明如下:
1、设备有 4个 GE接口同时支持 1588协议,处理装置的处理能力为 4G; 处理能力为 4G是因为处理装置的接口数据宽度为 32bit, 处理时钟频率 为 125M。 32x125M = 4G;
2、 在某一个时刻, 物理端口 2的报文数据 pkt2最先到达对应的接口装 置, 在报文数据 pkt2到达时刻将物理通道 2驻留时间计数器 port2_counter 置为 0, 计数器 port2_counter开始记数, 直到该报文数据 pkt2被处理装置 调度; 在接收完一整包后, 接口装置请求处理装置对报文 pkt2进行调度; 在此期间, 其它物理端口对应的接口装置也相继收到了报文数据 ptk1、 pkt3、 pkt4; 对于 port1_counter、 port3_counter、 port4_counter的处理与 物理通道 2的处理方式是一样的;
3、处理装置根据各个接口装置的调度请求开始调度物理端口 2的报文数 据 pkt2, 处理装置在调度物理端口 2 的报文数据 pkt2 的时候记录时间戳 STJemp, 并将此时间戳减去 port2_counter表示的时间 @t2, 得到准确的 pkt2进入设备的时间戳 ST, 即时间戳 3丁=时间戳 ST_temp-@t2; 同时根据 物理端口号 2得到端口号 2的 1588协议数据集, 并将此数据集更新为当前 的数据集, 再进行 1588协议处理;
4、 在接收完物理端口 2的报文数据 pkt2后, 处理装置开始调度物理端 口 4的报文数据 pkt4, 并记录时间戳 STJemp和 port4_counter表示的时间 @t4 , 得到准确的 pkt4 进入设备的时间戳 ST , 即时间戳 ST=时间戳 ST_temp-@t4; 同时根据物理端口号 4得到端口号 4的 1588协议数据集, 并将此数据集更新为当前的数据集, 再进行 1588协议处理;
5、处理装置对物理端口 1的报文数据 pktl和物理端口 3的报文数据 pkt3 的处理方式与 pkt2/pkt4相同,通过处理装置不断调度 4个端口数据来实现对 4个物理端口的支持。 6、 在发送方向上, 处理装置可以产生的携带有物理端口号的报文, 接口 装置可以根据处理装置所指示的物理端口号来调度处理装置里的报文数据到 指定的物理端口进行发送。
进一步地, 本实施例中步骤 302中调度的报文可以不携带报文头标识和 所述报文被调度之前的延迟信息, 可以仅直接携带有所述报文进入设备的时 间戳, 即为每个报文都在接口上打上正确的时间戳, 用以精确的标识报文进 入设备的时间, 通过处理装置在调度报文的时候调度相应的时间戳。 那么, 相应地, 可以省略步骤 305。
进一步地, 本实施例中的接口类型还可以是 FE ( 10M或者是 100M ), 还可以是 10GE, 处理装置的带宽处理能力和所支持端口数可以根据需求变 化。
本实施例只描述了边界时钟( Boundary Clock, 简称 BC ) 的处理情况, 对于透明时钟( Transparent Clock,简称 TC )、丁〇+普通时钟( Ordinary Clock, 简称 OC )也同样适用。
图 7为本发明实施例具有时钟信息报文的处理装置的第一实施例的结构 示意图, 如图 7 所示, 本实施例可以包括接口单元 71、 报文标识获取单元 72、 时钟处理配置信息获取单元 73和处理单元 74。 其中,接口单元 71用于 接收具有时钟信息的报文; 报文标识获取单元 72用于从处理单元 74处获取 所述报文的报文标识;时钟处理配置信息获取单元 73用于根据报文标识获取 单元 72 所获取的^艮文标识获取对应的主时钟处理配置信息或从时钟处理配 置信息; 处理单元 74用于根据时钟处理配置信息获取单元 73所获取的时钟 处理配置信息, 处理所述 ·艮文。
其中报文标识获取单元 72所获取的报文标识可以是报文内部的,也可以 独立于报文。 例如: 如果报文标识是物理端口号, 则可以位于报文内部, 经 过处理单元解析该报文之后获取, 还可以独立于报文即报文标识单独为一条 消息, 无需处理单元解析该报文直接从处理单元获取; 如果报文标识是 IP地 址或媒体访问控制 (MAC )地址, 则可以位于报文内部, IP地址或 MAC地 址是源地址, 即报文发送方的 IP地址或 MAC地址。
其中的时钟处理配置信息可以为主时钟处理配置信息或从时钟处理配置 信息。 其中的报文可以为 1588协议报文, 则时钟处理配置信息为 1588协议 数据集。
本实施例, 通过接口单元接收到具有时钟信息的报文, 由时钟处理配置 信息获取单元根据报文标识获取单元从接口单元所接收到的报文中获取到的 •艮文的 4艮文标识获取对应的时钟处理配置信息, 处理单元根据时钟处理配置 信息处理报文, 从而实现了一个报文处理装置可以同时支持一个以上的物理 端口, 减少了资源的占有量, 降低了成本。
图 8为本发明实施例具有时钟信息报文的处理装置的第二实施例的结构 示意图, 如图 8所示, 与上一实施例相比, 如果 ·艮文标识未写入对应 ·艮文中, 独立于报文即报文标识单独为一条消息, 本实施例中的报文标识获取单元 72 还可以直接从接口单元 71中对应的消息中获取所述报文的报文标识。
进一步地, 上述本发明实施例具有时钟信息报文的处理装置的第一实施 例和第二实施例中, 还可以包括延迟信息记录单元和延迟信息添加单元。 其 中, 延迟信息记录单元用于记录所述报文被调度之前的延迟信息; 延迟信息 添加单元用于在所述报文中添加所述延迟信息。 相应地, 还可以进一步包括 延迟信息获取单元, 用于获取所述报文被调度之前的延迟信息。
图 9为本发明实施例具有时钟信息报文的处理系统的第一实施例的结构 示意图, 如图 9所示, 本实施例可以包括接口装置 91和处理装置 90。 其中, 处理装置 90可以包括报文标识获取单元 92、 时钟处理配置信息获取单元 93 和处理单元 94。 其中, 接口装置 91用于接收具有时钟信息的报文; 报文标 识获取单元 92用于从处理单元 94处获取所述报文的报文标识; 时钟处理配 置信息获取单元 93用于根据报文标识获取单元 92所获取的报文标识获取对 应的主时钟处理配置信息或从时钟处理配置信息;处理单元 94用于根据时钟 处理配置信息获取单元 93所获取的时钟处理配置信息, 处理所述 ·艮文。
其中的报文标识可以是报文内部的, 也可以独立于报文。 例如: 如果报 文标识是物理端口号, 则可以位于报文内部, 经过处理单元解析该报文之后 获取, 还可以独立于报文即报文标识单独为一条消息, 无需处理单元解析该 报文直接从处理单元获取; 如果报文标识是 IP地址或媒体访问控制 (MAC ) 地址, 则可以位于报文内部, IP地址或 MAC地址是源地址, 即报文发送方 的 IP地址或 MAC地址。
其中的时钟处理配置信息可以为主时钟处理配置信息或从时钟处理配置 信息。 其中的报文可以为 1588协议报文, 则时钟处理配置信息为 1588协议 数据集。
进一步地, 其中的报文还可以携带有报文头标识和所述报文被调度之前 的延迟信息, 处理单元还可以根据此标识和延迟信息来给所述报文打进入设 备的时间戳, 延迟信息用于得到精确的报文进入设备的时间戳, 该延迟信息 可以是计数器, 也可以是 ns时间值, 两种方式处理相同, 本发明实施例用计 数器值描述。
此外, 上述报文也可以不携带报文头标识和所述报文被调度之前的延迟 信息, 还可以仅直接携带有所述报文进入设备的时间戳, 用以精确的标识报 文进入设备的时间, 以供处理单元来给所述报文打进入设备的时间戳。
本实施例, 通过接口装置接收到具有时钟信息的报文, 由时钟处理配置 信息获取单元根据报文标识获取单元从接口装置所接收到的报文中获取到的 •艮文的 4艮文标识获取对应的时钟处理配置信息, 处理单元根据时钟处理配置 信息处理报文, 从而实现了一个报文处理装置可以同时支持一个以上的物理 端口, 减少了资源的占有量, 降低了成本。
图 10 为本发明实施例具有时钟信息报文的处理系统的第二实施例的结 构示意图, 如图 10所示, 与上一实施例相比, 如果 ·艮文标识未写入对应 ·艮文 中, 独立于报文即报文标识单独为一条消息, 本实施例中的报文标识获取单 元 92还可以直接从接口装置 91中对应的消息中获取所述报文的报文标识。
进一步地, 上述本发明实施例具有时钟信息报文的处理系统的第一实施 例和第二实施例中, 处理装置还可以包括延迟信息记录单元和延迟信息添加 单元。 其中, 延迟信息记录单元用于记录所述报文被调度之前的延迟信息; 延迟信息添加单元用于在所述 4艮文中添加所述延迟信息。 相应地, 还可以进 一步包括延迟信息获取单元, 用于获取所述报文被调度之前的延迟信息。
本实施例在接收方向上, 接口装置分别向处理装置请求调度相应的物理 端口的报文, 处理装置在接收到请求调度的报文时根据物理端口号更新其内 部的 1588相关数据集, 其它处理和现有方案的处理装置的处理流程是一样, 从而实现了一个报文处理装置可以同时支持一个以上的物理端口, 减少了资 源的占有量, 降低了成本。
本发明上述实施例可以适用于端对端 (E2E )模式下从时钟设备发送 delay_req消息和接收主时钟设备回应的 delay_resp消息报文来实现的时间 同步, 也可以适用于 P2P模式下通过逐级测量链路延迟来实现的时间同步, 但不限于此。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其 限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或 者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技 术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权 利 要求
1、 一种具有时钟信息报文的处理方法, 其特征在于, 包括:
接收具有时钟信息的报文;
获取所述报文的报文标识;
根据所述报文的报文标识获取对应的时钟处理配置信息;
根据获取的时钟处理配置信息, 处理所述报文。
2、根据权利要求 1所述的方法, 其特征在于, 所述报文标识为物理端口 号、 I P地址或媒体访问控制地址。
3、根据权利要求 1所述的方法, 其特征在于, 所述报文标识在所述报文 的内部或独立于所述才艮文。
4、根据权利要求 1所述的方法, 其特征在于, 所述时钟处理配置信息为 主时钟处理配置信息或从时钟处理配置信息。
5、 根据权利要求 1或 4所述的方法, 其特征在于, 所述报文为 1588协 议报文, 所述时钟处理配置信息为 1588协议数据集。
6、 根据权利要求 5所述的方法, 其特征在于, 所述 1588协议数据集包 括端口标识、 端口状态、 端口端对端延迟请求消息的最小平均发包间隔、 端 口点对点延迟模式下的平均路径延迟、 端口声明消息的平均发包间隔、 端口 声明消息接收超时间隔、 端口同步消息的平均发包间隔、 端口延迟模式、 端 口点对点延迟请求消息的最小平均发包间隔、 以及端口支持的 1588 版本号 之一或任意组合。
7、 根据权利要求 6所述的方法, 其特征在于, 所述 1588协议数据集进 一步包括端口同步消息的序列号、 端口端对端延迟消息的序列号、 端口点对 点延迟消息的序列号、 端口声明消息的序列号、 端口声明消息的序列号、 以 及端口声明消息的序列号。
8、根据权利要求 1所述的方法, 其特征在于, 所述报文还携带所述报文 被调度之前的延迟信息。
9、根据权利要求 8所述的方法, 其特征在于, 所述延迟信息为计数器的 数值或纳秒时间值。
10、 根据权利要求 8或 9所述的方法, 其特征在于, 还包括步骤: 根据 所述延迟信息获取所述报文进入设备的时间戳。
11、 根据权利要求 1所述的方法, 其特征在于, 所述报文还携带所述报 文进入设备的时间戳。
12、 一种具有时钟信息报文的处理装置, 其特征在于, 包括:
接口单元, 用于接收具有时钟信息的报文;
报文标识获取单元, 用于获取所述报文的报文标识;
时钟处理配置信息获取单元, 用于根据所述报文的报文标识获取对应的 时钟处理配置信息;
处理单元, 用于根据获取的时钟处理配置信息, 处理所述报文。
13、 根据权利要求 12 所述的装置, 其特征在于, 所述报文标识获取单 元用于获取所述报文的报文标识, 具体为用于从所述处理单元处获取所述报 文的艮文标识。
14、 根据权利要求 12 所述的装置, 其特征在于, 所述报文标识获取单 元用于获取所述报文的报文标识, 具体为用于从所述接口单元处获取所述报 文对应的物理端口号。
15、 根据权利要求 12 所述的装置, 其特征在于, 所述时钟处理配置信 息获取单元用于根据所述报文的报文标识获取对应的时钟处理配置信息, 具 体为用于根据所述报文的报文标识获取对应的主时钟处理配置信息或从时钟 处理配置信息。
16、 根据权利要求 12所述的装置, 其特征在于, 还包括:
延迟信息记录单元, 用于记录所述报文被调度之前的延迟信息; 延迟信息添加单元, 用于在所述 ·艮文中添加所述延迟信息。
17、 根据权利要求 16 所述的装置, 其特征在于, 还包括: 延迟信息获 取单元, 用于获取所述报文被调度之前的延迟信息。
18、 一种具有时钟信息报文的处理系统, 其特征在于, 包括:
接口装置, 用于接收具有时钟信息的报文;
处理装置, 包括:
报文标识获取单元, 用于获取所述报文的报文标识;
时钟处理配置信息获取单元, 用于根据所述报文的报文标识获取对应的 时钟处理配置信息;
处理单元, 用于根据获取的时钟处理配置信息, 处理所述报文。
19、 根据权利要求 18 所述的系统, 其特征在于, 所述报文标识获取单 元用于获取所述报文的报文标识, 具体为用于从所述处理单元处获取所述报 文的艮文标识。
20、 根据权利要求 18 所述的系统, 其特征在于, 所述报文标识获取单 元用于获取所述报文的报文标识, 具体为用于从所述接口装置处获取所述报 文对应的物理端口号。
21、 根据权利要求 18 所述的系统, 其特征在于, 所述时钟处理配置信 息获取单元用于根据所述报文的报文标识获取对应的时钟处理配置信息, 具 体为用于根据所述报文的报文标识获取对应的主时钟处理配置信息或从时钟 处理配置信息。
22、 根据权利要求 18所述的系统, 其特征在于, 所述接口装置还包括: 延迟信息记录单元, 用于记录所述报文被调度之前的延迟信息; 延迟信息添加单元, 用于在所述 ·艮文中添加所述延迟信息。
23、 根据权利要求 22所述的系统, 其特征在于, 所述处理装置还包括: 延迟信息获取单元, 用于获取所述报文被调度之前的延迟信息。
PCT/CN2009/070425 2008-06-04 2009-02-13 具有时钟信息报文的处理方法、装置及系统 WO2009146611A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200810114369 CN101599894B (zh) 2008-06-04 2008-06-04 具有时钟信息报文的处理方法、装置及系统
CN200810114369.X 2008-06-04

Publications (1)

Publication Number Publication Date
WO2009146611A1 true WO2009146611A1 (zh) 2009-12-10

Family

ID=41397718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/070425 WO2009146611A1 (zh) 2008-06-04 2009-02-13 具有时钟信息报文的处理方法、装置及系统

Country Status (2)

Country Link
CN (1) CN101599894B (zh)
WO (1) WO2009146611A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102761407A (zh) * 2012-07-16 2012-10-31 中兴通讯股份有限公司 跨机框系统及其时间和频率透传的实现方法和装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2487836A1 (en) 2011-02-01 2012-08-15 Alcatel Lucent Automatic capture of the network delay components
EP2506470B1 (en) 2011-03-29 2013-05-29 Alcatel Lucent Method, apparatus and system for time distribution in a telecommunications network
CN102983959B (zh) * 2011-09-05 2015-05-13 盛科网络(苏州)有限公司 在多个mac中实现ptp一步模式和两步模式的方法及装置
CN102355346B (zh) * 2011-10-13 2018-02-09 中兴通讯股份有限公司 一种时钟同步源设备有效性判定方法及装置
CN103078699B (zh) * 2012-12-28 2015-08-05 华为技术有限公司 基于精密时间协议进行时间同步的方法和网络设备
CN103297217A (zh) * 2013-05-22 2013-09-11 盛科网络(苏州)有限公司 基于message的PTP报文的芯片处理方法和系统
JPWO2017026248A1 (ja) * 2015-08-07 2018-06-14 ソニー株式会社 受信装置、及び、データ処理方法
CA2999689A1 (en) * 2015-09-30 2017-04-06 Sony Corporation Data processing apparatus and data processing
CN106230540B (zh) * 2016-06-30 2019-03-26 电信科学技术第五研究所有限公司 高精度ntp报文接收方法和发送方法
CN110138486B (zh) * 2018-02-02 2021-10-12 中兴通讯股份有限公司 同步报文的生成方法、同步设备及计算机可读存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1585379A (zh) * 2004-05-25 2005-02-23 华中科技大学 一种数据包的快速解析方法
US20050071432A1 (en) * 2003-09-29 2005-03-31 Royston Clifton W. Probabilistic email intrusion identification methods and systems
CN1937574A (zh) * 2005-09-19 2007-03-28 北京大学 对网络流进行分类、状态跟踪和报文处理的装置和方法
CN101047620A (zh) * 2006-04-07 2007-10-03 华为技术有限公司 快速处理报文的装置及方法
CN101068185A (zh) * 2007-06-19 2007-11-07 中兴通讯股份有限公司 以太环网报文处理方法及应用该方法的以太环网保护系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100588147C (zh) * 2006-11-03 2010-02-03 中国科学院沈阳自动化研究所 工业监测用无线网状网络低开销高精度时间同步方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050071432A1 (en) * 2003-09-29 2005-03-31 Royston Clifton W. Probabilistic email intrusion identification methods and systems
CN1585379A (zh) * 2004-05-25 2005-02-23 华中科技大学 一种数据包的快速解析方法
CN1937574A (zh) * 2005-09-19 2007-03-28 北京大学 对网络流进行分类、状态跟踪和报文处理的装置和方法
CN101047620A (zh) * 2006-04-07 2007-10-03 华为技术有限公司 快速处理报文的装置及方法
CN101068185A (zh) * 2007-06-19 2007-11-07 中兴通讯股份有限公司 以太环网报文处理方法及应用该方法的以太环网保护系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102761407A (zh) * 2012-07-16 2012-10-31 中兴通讯股份有限公司 跨机框系统及其时间和频率透传的实现方法和装置

Also Published As

Publication number Publication date
CN101599894B (zh) 2013-01-30
CN101599894A (zh) 2009-12-09

Similar Documents

Publication Publication Date Title
WO2009146611A1 (zh) 具有时钟信息报文的处理方法、装置及系统
JP6032824B2 (ja) パケット交換通信網におけるスケジューリング方法、エンドノード及びコアネットワークスイッチ
US10158444B1 (en) Event-driven precision time transfer
US8879552B2 (en) Precision time protocol offloading in a PTP boundary clock
JP5140079B2 (ja) 制御遅延パケット転送の機器および方法
EP2586142B1 (en) Deterministic placement of timestamp packets using a periodic gap
WO2011017867A1 (zh) 光传送网承载时间同步协议的方法及系统
US20150085852A1 (en) Communication system and time synchronization method
CN111385048A (zh) 一种时间同步方法及系统
KR102410422B1 (ko) 네트워크에서의 분산 프로세싱
WO2015196685A1 (zh) 时钟同步方法及装置
WO2012068844A1 (zh) 一种主从时钟设备的时钟同步方法及系统
CN103078699A (zh) 基于精密时间协议进行时间同步的方法和网络设备
CN110492960A (zh) 基于以太网的同步通信方法
WO2013029453A1 (zh) 穿越第三方同步网络的同步方法和系统
WO2019104522A1 (en) Methods and devices for flexe network
KR101199576B1 (ko) Most 가상 이더넷 어댑터 장치 및 어댑터 관리 방법
Choi et al. Advanced AVB Method for IPTV Service Provision

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09757045

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09757045

Country of ref document: EP

Kind code of ref document: A1