公开(公告)号：EP2722718B1

公开(公告)日：2018-03-21

申请号：EP12801339.8

申请日：2012-06-13

Applicant: Yokogawa Electric Corporation

Inventor： TODA Hideyuki

IPC: G04G5/00 ,  H04M11/00 ,  H04W56/00 ,  H04W92/20 ,  H04W84/18 ,  H04J3/06

CPC classification number: H04W56/001 ,  H04J3/0641 ,  H04J3/0667 ,  H04J3/0673 ,  H04W56/0015

Abstract: A communication system comprising first and second primary stations for performing synchronous wireless communication with a secondary station via a first network, and a control station connected to the first and second primary stations via a second network, wherein the control station transmits time information for synchronizing the time of the first and second primary stations to the first and second primary stations, one of the first and second primary stations adjusts the time using the time information from the control station, and the other of the first and second primary stations adjusts the time using notification information, which is information for providing notification of the time information transmitted from the first or second primary station via the first network.

公开(公告)号：EP3280198A1

公开(公告)日：2018-02-07

申请号：EP15890645.3

申请日：2015-12-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： QI, Yunlei ,  LI, Chunrong

IPC: H04W56/00

CPC classification number: H04L47/283 ,  H04J3/0647 ,  H04J3/0667 ,  H04J3/0673 ,  H04L43/0852 ,  H04L43/16 ,  H04W56/00

Abstract: A communications network delay variation smoothing method, an apparatus, and a system are disclosed. The method includes: clearing, by a receiving module, a forward delay threshold and a reverse delay threshold when an initialization time starts; and performing the following operation for each service flow fragment within the initialization time: when determining that a maximum value between a real-time forward delay value corresponding to a current service flow fragment and a reverse delay threshold corresponding to the current service flow fragment is greater than a current value of the forward delay threshold, replacing the current value of the forward delay threshold with the maximum value. In this way, after the initialization ends, a delay threshold after the initialization ends is determined and is applied to delay compensation, thereby significantly reducing a bi-directional asymmetric delay variation, and avoiding a problem of abnormal user communication that is caused when the variation exceeds a limit.

Abstract translation: 公开了一种通信网络延迟变化平滑方法，装置和系统。 该方法包括：当初始化时间开始时，由接收模块清除转发延迟阈值和反向延迟阈值; 并在初始化时间内对各业务流片段进行如下操作：当确定当前业务流片段对应的实时转发延迟值与当前业务流片段对应的反向延迟阈值之间的最大值较大时 比前向延迟阈值的当前值大，用最大值代替前向延迟阈值的当前值。 这样，初始化结束后，确定初始化结束后的延迟阈值并应用于延迟补偿，从而显着减少了双向非对称延迟变化，避免了当变化时导致的用户通信异常问题 超过限制。

公开(公告)号：EP2856673B1

公开(公告)日：2017-10-04

申请号：EP12748468.1

申请日：2012-08-17

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： LANZONE, Sergio ,  RUFFINI, Stefano ,  TOSCANO, Orazio

IPC: H04J3/16 ,  H04J3/06

CPC classification number: H04L7/0075 ,  H04J3/065 ,  H04J3/0667 ,  H04J3/0673 ,  H04J3/1652

Abstract: A method distributes clock synchronization information within an optical communications network having a plurality of network elements. The method receives an ingress clock synchronization message at a first network element. The ingress clock synchronization message includes a clock synchronization message identifier and a correction field. The clock synchronization message identifier is inserted into an optical channel frame overhead and the ingress clock synchronization message is inserted into an optical channel frame payload. The optical channel frame overhead and the optical channel frame payload are transmitted across the first network element, across the network to a second network element, and across the second network element. A transit time of the clock synchronization message identifier is determined across each of the network elements. At the second network element, the correction field of the ingress clock synchronization message is updated with the transit times to form an egress clock synchronization message.

Abstract translation: 一种方法在包括多个网络元件的光通信网络内分发时钟同步信息。 该方法在第一所述网络元件处接收入口时钟同步消息。 入口时钟同步消息包括时钟同步消息标识符和校正字段。 时钟同步消息标识符被插入到光通道帧开销中，并且入口时钟同步消息被插入到光通道帧有效载荷中。 光信道帧开销和光信道帧有效载荷通过第一网络元件，穿过网络被传输到第二所述网络元件，并穿过第二网络元件。 时钟同步消息标识符的渡越时间跨越每个网络元素被确定。 在第二网络单元处，用所述传送时间更新入口时钟同步消息的校正字段以形成出口时钟同步消息。

公开(公告)号：EP2736194B1

公开(公告)日：2017-09-27

申请号：EP12194426.8

申请日：2012-11-27

Applicant: ADVA Optical Networking SE

Inventor： Turnbull, Peter ,  Magee, Anthony

IPC: H04L12/26 ,  H04J3/06

CPC classification number: H04L43/0852 ,  H04J3/0667 ,  H04J3/0673 ,  H04L43/0858 ,  H04L43/0864

公开(公告)号：EP3151452A1

公开(公告)日：2017-04-05

申请号：EP15290253.2

申请日：2015-09-30

Applicant: ALCATEL LUCENT

Inventor： Koch, Werner

IPC: H04J3/06

CPC classification number: H04J3/0667 ,  H04J3/0673

Abstract: It is proposed a network node (2) of a telecommunications network, the network node (2) comprising a time adjustment unit (4) for time synchronization between network nodes (2) of the telecommunications network. The time adjustment unit (4) is configured to generate an egress time synchronization signal (6). A switch network (8) is configured to feed back the egress time synchronization signal (6) across a signal path (10) of the network node (2. A counter unit (12) is configured to determine a signal delay (14) occurring on the signal path (10). The time adjustment unit (4) is configured to determine a timestamp (16) in dependence of the signal delay (14).

Abstract translation: 提出了电信网络的网络节点（2），网络节点（2）包括用于在电信网络的网络节点（2）之间进行时间同步的时间调整单元（4）。 时间调整单元（4）被配置为生成出口时间同步信号（6）。 交换网络（8）被配置为跨越网络节点（2）的信号路径（10）反馈出口时间同步信号（6）。计数器单元（12）被配置为确定发生的信号延迟（14） 所述时间调整单元（4）被配置为根据所述信号延迟（14）来确定时间戳（16）。

公开(公告)号：EP2367309B1

公开(公告)日：2016-07-13

申请号：EP10153237.2

申请日：2010-02-10

Applicant: ALCATEL LUCENT

Inventor： Le Pallec, Michel ,  Bui, Dinh Thai

IPC: H04J3/06

CPC classification number: H04J3/14 ,  H04J3/0641 ,  H04J3/0661 ,  H04J3/0673

公开(公告)号：EP2071760B1

公开(公告)日：2016-02-24

申请号：EP08734011.3

申请日：2008-04-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： CHENG, Yong ,  BAO, Xiaodong ,  ZHANG, Zhan ,  HE, Yinghai ,  WU, Ning

IPC: H04L7/00 ,  H04J3/06 ,  H04L12/46

CPC classification number: H04J3/0641 ,  H04J3/0647 ,  H04J3/0667 ,  H04J3/0673 ,  H04J2203/0089

公开(公告)号：EP2750339A1

公开(公告)日：2014-07-02

申请号：EP12828422.1

申请日：2012-08-01

Applicant: ZTE Corporation

Inventor： ZHANG, Junhui ,  QU, Yanfeng

IPC: H04L12/70

CPC classification number: H04L45/00 ,  H04J3/0667 ,  H04J3/0673

Abstract: A synchronization method and system for traversing a third-party synchronous network, includes configuring a 1588 Transparent Clock (TC) traversing mode at an ingress edge device and an egress edge device of the third-party synchronous network, and synchronizing between the ingress edge device and the egress edge device; and transparently transmitting a Precision Time Protocol (PTP) message which needs to traverse the third-party synchronous network in the third-party synchronous network, and when the transparently transmitted PTP message reaches the egress edge device, correcting a correctionField of the PTP message according to a delay in the network, and transmitting the PTP message from the egress edge device to the next level device. The above technical scheme solves the 1588 TC problem of traversing the third-party synchronous network, synchronization only needs to be implemented at the edge devices of the third-party network, the routing protocol does not need to be extended, an intermediate network device does not need to support the TC either, thereby greatly reducing the complexity of implementation and operational costs.

Abstract translation: 一种用于遍历第三方同步网络的同步方法和系统，包括在第三方同步网络的入口边缘设备和出口边缘设备处配置1588透明时钟（TC）遍历模式，并在入口边缘设备 和出口边缘设备; 透明传输需要遍历第三方同步网络的第三方同步网络的精确时间协议（PTP）消息，透明传输的PTP消息到达出端边缘设备时，根据 到网络中的延迟，并且将PTP消息从出口边缘设备发送到下一级设备。 上述技术方案解决了通过第三方同步网络的1588 TC问题，只需要在第三方网络的边缘设备上实现同步，路由协议不需要扩展，中间网络设备 不需要支持TC，从而大大降低了实施和运营成本的复杂性。

公开(公告)号：EP2736194A1

公开(公告)日：2014-05-28

申请号：EP12194426.8

申请日：2012-11-27

Applicant: ADVA Optical Networking SE

Inventor： Turnbull, Peter ,  Magee, Anthony

IPC: H04L12/26 ,  H04J3/06

CPC classification number: H04L43/0852 ,  H04J3/0667 ,  H04J3/0673 ,  H04L43/0858 ,  H04L43/0864

Abstract: A network (1) comprising a latency monitoring point (2) adapted to calculate a forward latency of a path between a master node (3) and a slave node (4) on the basis of time stamps which are exchanged periodically between said master node (3) and said slave node (4) by a time alignment protocol used in said network.

Abstract translation: 一种网络（1），包括等待时间监视点（2），其适于基于在所述主节点（3）和从节点（4）周期性地交换的时间戳来计算主节点（3）和从节点（4）之间的路径的前向等待时间 （3）和所述从节点（4）通过在所述网络中使用的时间对准协议。

公开(公告)号：EP2609700A1

公开(公告)日：2013-07-03

申请号：EP10773747.0

申请日：2010-08-26

Applicant: Thomson Licensing

Inventor： GAO, Wen ,  CHEN, Hou-Shin

IPC: H04J3/06 ,  H04W16/14

CPC classification number: H04W72/0446 ,  H04J3/0641 ,  H04J3/0673 ,  H04W16/14 ,  H04W36/0061 ,  H04W48/10 ,  H04W48/16 ,  H04W56/0015 ,  H04W56/002 ,  H04W72/044 ,  H04W84/12 ,  H04W88/08

Abstract: A method and apparatus are described including defining a neighbor set for each access point, selecting a first clock in a first access point, the selected clock having a highest accuracy as a grand master clock, advising neighboring access points to synchronize with the selected grand master clock and transmitting a message to schedule a quiet period based on the grand master clock. Also described are a method and apparatus including receiving a beacon message, inspecting clock descriptors in the beacon message, selecting a best master clock responsive to the inspection and transmitting a message to schedule a quiet period based on the selected best master clock.

Abstract translation: 描述了一种方法和设备，包括为每个接入点定义邻居组，选择第一接入点中的第一时钟，所选时钟具有作为高级主时钟的最高准确度，建议相邻接入点与所选高级主站同步 时钟并发送消息来安排基于最高主时钟的安静时段。 还描述了一种方法和装置，包括接收信标消息，检查信标消息中的时钟描述符，响应于检查选择最佳主时钟，并基于所选最佳主时钟发送消息以调度安静时段。