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公开(公告)号：US12132567B2
公开(公告)日：2024-10-29
申请号：US17687056
申请日：2022-03-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingfei Lv , Dejian Xu , Xiaoxia Li
IPC: H04J3/06
CPC classification number: H04J3/0658
Abstract: A method includes receiving, by a first node on a first port of the first node, a first packet from a second node; and when the first packet carries a first flag, avoid selecting, by the first node and when selecting a clock source, a clock source corresponding to the first port, where the first flag indicates that time synchronization of the second node is uncertain.
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公开(公告)号：US20240283692A1
公开(公告)日：2024-08-22
申请号：US18570329
申请日：2022-06-15
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Peter SKOV , Eero Vilho Juhani RYYTTY , Krzysztof KURNICKI
CPC classification number: H04L27/2666 , H04J3/0658 , H04L47/28
Abstract: Disclosed is a method comprising processing a first set of data, assigning the first set of data to a first timing group comprising a first transmission time window, transmitting the first set of data via a fronthaul interface during the first transmission time window, processing a second set of data, wherein at least a part of the second set of data is processed during the first transmission time window, assigning the second set of data to a second timing group comprising a second transmission time window, and transmitting the second set of data via the fronthaul interface during the second transmission time window.
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3.发明公开公开(公告)号：US20240267857A1
公开(公告)日：2024-08-08
申请号：US18571352
申请日：2022-05-30
Applicant: Siemens Mobility GmbH
Inventor： Daniel Fortunati , Bhabani Nayak , Ernesto de Stefano
IPC: H04L43/0852 , H04L43/16
CPC classification number: H04W56/001 , G06F9/30043 , H04J3/0658 , H04L43/0858 , H04L43/16 , H04N21/4341
Abstract: A computer-assisted method for monitoring a first time base of a first communication device and a second time base of a second communication device. First, Cristian's algorithm is used to calculate time offset intervals between the time bases. Second, the maximally possible drift of the time offset is ascertained multiple times for two measurement steps. A minimally possible drift is ascertained from the upper limit of the time offset interval for the previous measurement step and the lower limit of the time offset interval for the subsequent measurement step. The upper and lower limits of a drift interval are calculated from the maximally and minimally possible drifts. Third, the lowest upper limit is defined as the upper limit of a resulting drift interval, and the highest lower limit is defined as the lower limit of the resulting drift interval with narrow limits for the relative drift.
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公开(公告)号：US20240267143A1
公开(公告)日：2024-08-08
申请号：US18689469
申请日：2022-09-05
Applicant: BEIJING CHJ INFORMATION TECHNOLOGY CO., LTD.
Inventor： Shaodong Yang
IPC: H04J3/06
CPC classification number: H04J3/0658
Abstract: A method for time synchronization, includes: acquiring target information including preset mode information; determining a target mode according to the preset mode information; determining a first synchronous clock as a clock source, in the target mode; and generating a first control instruction for controlling a device waiting for the time synchronization to perform the time synchronization according to the first synchronous clock.
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公开(公告)号：US20240259241A1
公开(公告)日：2024-08-01
申请号：US18631912
申请日：2024-04-10
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chenchen Liu , Xun Yang , Xiaohui Peng
CPC classification number: H04L27/2035 , H04J3/0658
Abstract: Embodiments of this application provide a method and an apparatus for transmitting a physical layer protocol data unit. The method includes: generating a synchronization header field based on a first sequence or a third sequence, where a side lobe of a periodic cross-correlation function of the first sequence and a second sequence is a constant value, the first sequence is a binary sequence consisting of 1 and 0, the second sequence is a binary phase shift keying sequence corresponding to the first sequence, a side lobe of a periodic autocorrelation function of the third sequence is a constant value, and the third sequence is a binary phase shift keying sequence consisting of 1 and −1; and sending a physical layer protocol data unit PPDU on a target channel, where the PPDU includes the synchronization header field.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240259127A1
公开(公告)日：2024-08-01
申请号：US18632320
申请日：2024-04-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xi Han
CPC classification number: H04J3/0644 , H04J3/0658 , H04W56/0015
Abstract: This application discloses a clock synchronization information obtaining (or providing) method and a communication apparatus, which are applied to a communication network between a radio device controller and a radio device. The radio device can provide, based on clock synchronization information, the radio device controller with clock synchronization accuracy of the radio device relative to a clock source, and the radio device controller can determine, based on the clock synchronization information, clock synchronization accuracy (that is, first clock synchronization accuracy) of the radio device relative to the radio device controller.
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公开(公告)号：US20240236000A1
公开(公告)日：2024-07-11
申请号：US18239961
申请日：2023-08-30
Applicant: Hitachi, Ltd.
Inventor： Katsuto SATO , Toshiyuki ARITSUKA , Takafumi KIKUCHI
CPC classification number: H04L47/10 , H04J3/0658 , H04L7/0041
Abstract: A calculator system connected to a public network efficiently avoids congestion. The calculator system is connected to a network including a network switch, includes a plurality of calculators, and recovers, when a data packet is lost on the network, a transfer operation of the lost data packet by a retransmission operation. The calculator system includes the calculators; software running on the calculators; timing adjusting mechanism present between the calculators and the network. The timing adjusting mechanism is configured to calculate a delay time for delaying transmission of a data packet transmitted from the software based on characteristics of the data packet, and delay the transmission of the data packet by the calculated delay time.
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8.发明授权公开(公告)号：US12028156B2
公开(公告)日：2024-07-02
申请号：US17633329
申请日：2020-07-28
Applicant: ZTE Corporation
Inventor： Linlin Wang , Li He
CPC classification number: H04J3/0641 , H04J3/0658 , H04L7/0004 , H04L7/04
Abstract: A time synchronization method, a time synchronization sender, a time synchronization receiver and a time synchronization system are provided. The method includes: determining whether at least one parameter causing recalculation of a best master clock (BMC) algorithm changes; in a case where it is determined that the parameter changes, sending a 1588 standard-based Announce message; and in a case where it is determined that the parameter does not change, sending a keep-alive message of the Announce message. In the present disclosure, by distinguishing keep-alive messages from protocol messages, the problem that a CPU system is busy due to the processing of Announce messages is solved, thereby realizing the optimization of the 1588 protocol, and reducing the impact on the CPU.
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公开(公告)号：US20240171593A1
公开(公告)日：2024-05-23
申请号：US17990091
申请日：2022-11-18
Applicant: Intel Corporation
Inventor： Marcio Juliato , Shabbir Ahmed , Christopher Gutierrez , Vuk Lesi , Manoj Sastry
CPC classification number: H04L63/1416 , H04J3/0658 , H04L63/1466
Abstract: Techniques include an apparatus to retrieve a first parameter for the IDS to monitor a device for a time-synchronized network. The first parameter may represent a number of messages the IDS needs to analyze in order to detect a security attack. The messages may comprise time information to synchronize a clock for a device to a network time for a time-synchronized network. The processor circuitry may retrieve a second parameter for a time sensitive application. The second parameter may represent a defined amount of time error tolerated by the time sensitive application, and determine a third parameter for the IDS based on the first and second parameters. The third parameter may represent a defined frequency to receive a number of messages with time information in order to detect the security attack on the device within a defined time interval. Other embodiments are described and claimed.
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公开(公告)号：US20240049152A1
公开(公告)日：2024-02-08
申请号：US18489502
申请日：2023-10-18
Applicant: SOLiD, INC.
Inventor： Dong Hee KWON , Hoo Pyo HONG , Yong Hoon KANG , Dae Young KIM , Young Man CHO
CPC classification number: H04W56/0005 , H04J3/0658 , H04L69/22 , H04W72/0446 , H04B7/15 , H04W72/21 , H04W88/085
Abstract: There is provided a method of processing uplink Ethernet packets of an aggregation node included in a distributed antenna system, the method includes: receiving a plurality of uplink Ethernet packets; summing the plurality of received uplink Ethernet packets; and transmitting the summed uplink Ethernet packets in an uplink direction.
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