Using Oam (operation, Administration And Maintenance) Cells Patents (Class 370/236.2)
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Patent number: 11929917Abstract: In one embodiment, a method includes identifying a problematic event between a first interest point and a second interest point of a network and activating, in response to identifying the problematic event between the first interest point and the second interest point, a first endpoint associated with the first interest point and a second endpoint associated with the second interest point. The method also includes receiving, from the first endpoint and the second endpoint, telemetry data associated with a problematic path between the first interest point and the second interest point. The method further includes determining the problematic path between the first interest point and the second interest point using the telemetry data received from the first endpoint and the second endpoint.Type: GrantFiled: July 30, 2021Date of Patent: March 12, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Vijay Kumar Devendran, Kiran Kumar Meda, Rajagopalan Janakiraman, Shyam N. Kapadia, Javed Asghar
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Patent number: 11838389Abstract: A service deployment method determining an execution path of a to-be-deployed service, the execution path includes a first execution device and a second execution device; obtaining a first quality of service (QoS) of the first execution device; obtaining a second QoS of the second execution device; calculating a third QoS of the execution path based on the first QoS and the second QoS; obtaining a preset QoS of the to-be-deployed service; making a first determination that a first relationship between the third QoS and the preset QoS meets a preset rule; and deploying, in response to the first determination, the to-be-deployed service on the execution path.Type: GrantFiled: December 28, 2021Date of Patent: December 5, 2023Assignee: HUAWEI CLOUD COMPUTING TECHNOLOIGES CO., LTD.Inventors: Lei Xiao, Bo Jin, Si Shen, Youqiang Li
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Patent number: 11805568Abstract: This document describes methods and systems for user equipment (UE) context transfer over radio access network (RAN) paging. A first base station receives from a second base station a first message that includes a context that is associated with a user equipment while the user equipment was in an engaged mode with the second base station. The first base station transmits a second message that is a paging message to the user equipment and in response receives, from the user equipment, a third message that includes a resume message authentication code identifier. After the first base station verifies the third message using the resume message authentication code identifier, the first base station transmits, to the user equipment, a fourth message that enables the user equipment to resume the engaged mode with the first base station in accordance with the context.Type: GrantFiled: June 9, 2022Date of Patent: October 31, 2023Assignee: Google LLCInventors: Ching-Jung Hsieh, Chih-Hsiang Wu
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Patent number: 11743951Abstract: Method and apparatus to configure a UE to initiate a two-step RACH process to perform a PCI selection process using L1/L2 messaging. The apparatus determines at least one target PCI in preparation of performing a PCI selection procedure. The apparatus selects a first target PCI that meets a threshold to initiate the PCI selection procedure. The apparatus transmits a first random access response message to the first target PCI. The apparatus monitors for a second random access response message from the first target PCI.Type: GrantFiled: July 27, 2021Date of Patent: August 29, 2023Assignee: QUALCOMM IncorporatedInventors: Yan Zhou, Qian Zhang, Tao Luo
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Patent number: 11743103Abstract: The present disclosure relates to operation, administration and maintenance (OAM) data transmission methods and apparatus. One example method includes obtaining a first data flow of a client, inserting an OAM data block in the first data flow of the client to obtain a second data flow of the client, where the OAM data block is a 64B/66B code block that carries OAM data, and distributing the second data flow of the client to at least one slot of a channel corresponding to the client.Type: GrantFiled: August 31, 2021Date of Patent: August 29, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Jing Huang, Min Zha, Qiwen Zhong
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Patent number: 11606747Abstract: A centralized controller determines n radio remote units (RRUs) in m RRUs, where a sum of first downlink reference signal received powers (RSRPs) of a same terminal, corresponding to the n RRUs, is greater than or equal to a first preset value, and a first downlink RSRP of one terminal corresponding to one is a received power that is estimated by the centralized controller, that is measured by the terminal, and that is of a reference signal (RS) from the RRU at a corresponding first RS transmit power. The centralized controller turns off an RRU that is in the m RRUs and that is different from the n RRUs, boosts a second RS transmit power corresponding to each of the n RRUs to a corresponding first RS transmit power, and enables each of the n RRUs to send an RS at the corresponding first RS transmit power.Type: GrantFiled: January 25, 2021Date of Patent: March 14, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Jindong Peng, Wei Zhang
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Patent number: 11558143Abstract: Disclosed in the embodiments of the present invention are an OAM message transmission method and transmission device, and a storage medium. The OAM message transmission method comprises: obtaining an OAM block generated on the basis of an OAM message; replacing an idle block in a data stream with the OAM block; and sending the data stream carrying the OAM block.Type: GrantFiled: August 17, 2018Date of Patent: January 17, 2023Assignees: CHINA MOBILE COMMUNICATION CO., LTD RESEARCH INSTITUTE, CHINA MOBILE COMMUNICATIONS GROUP CO., LTD.Inventors: Weiqiang Cheng, Han Li, Lei Wang
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Patent number: 11444864Abstract: A system for tracing packets in a Software Defined Networking (SDN) network. The system includes a switch and an SDN controller communicatively coupled to the switch. The SDN controller is configured to program a packet processing pipeline of the switch to cause the switch to determine, at a first flow table of the packet processing pipeline, whether a packet is a trace packet that was recirculated based on content of a first field associated with the packet and in response to a determination that the packet is a trace packet that was recirculated, set a first field associated with the packet to indicate that tracing is disabled for the packet, set a second field associated with the packet to indicate that tracing is enabled for the packet, determine a flow table of the packet processing pipeline from which the packet was recirculated, and direct the packet to that flow table.Type: GrantFiled: October 27, 2017Date of Patent: September 13, 2022Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Faseela K, Vyshakh Krishnan C H
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Patent number: 11343359Abstract: An operation method of a first communication node in an Ethernet-based vehicle network is provided. A frame n is generated including a data unit n, and a first indicator indicating that a size of a data unit n+1 to be transmitted via a frame n+1 after determining that the frame n is different from a size of the data unit n. The frame n is transmitted to a second communication node and the frame n+1 is generated including the data unit n+1. The frame n+1 is then transmitted to the second communication node. The transmission rate of the data unit n is different from the transmission rate of the data unit n+1, and n is a natural number.Type: GrantFiled: March 3, 2020Date of Patent: May 24, 2022Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry-University Cooperation Foundation Hanyang UniversityInventors: Sung Kwon Park, Tae Hyung Kim
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Patent number: 11316784Abstract: A method and a device for processing a packet by using a unified SR label stack, relating to the field of PTN. The method includes: allocating, according to a type of a forwarding plane, a compatibility indicator indicating that a unified U-SRH is carried, for a service packet entering the forwarding plane; adding an SR label stack, the U-SRH and the compatibility indicator to the service packet to obtain an extended packet; and processing and forwarding the extended packet in the forwarding plane according to the SR label stack, the U-SRH and the compatibility indicator. According to embodiments of the present disclosure, the unified SR label stack is used to simplify an application of SR technology in different forwarding planes, and uniformity of SR encapsulation format is enhanced.Type: GrantFiled: February 12, 2019Date of Patent: April 26, 2022Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.Inventors: Aihua Liu, Shuangping Zhan, Fangwei Hu
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Patent number: 11159441Abstract: Methods and apparatus, including computer program products, are provided for QoE/QoS management. In some example embodiments, there may be provided a method. The method may include detecting, by an enforcement point, an initiation of a session of an application; determining, by the enforcement point, whether a new subservice flow needs to be established to enable, for the initiated session, a quality of service differentiation and/or a quality of experience differentiation; sending, by the enforcement point, an indication to a radio to enable the radio to establish a radio buffer to handle the new subservice flow, when the new subservice flow needs to be established; sending, by the enforcement point, parameter information to the radio to enable the radio to configure at least one service parameter of the radio buffer; and forwarding, by the enforcement point, user-plane data associated with the session to the radio including a subservice flow identifier.Type: GrantFiled: April 11, 2016Date of Patent: October 26, 2021Assignee: Nokia Technologies OyInventors: Ling Yu, Matti Einari Laitila, Peter Szilagyi, Csaba Vulkán
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Patent number: 11088930Abstract: A method of supporting latency monitoring in a network transporting traffic to and from a wireless base station. The method comprises, at a first node of the transport network determining (1401) a first timestamp representing a time at which a data element is received at the first node and adding (1402) information representative of the first timestamp to a communication signal which carries data for the wireless base station, the data including the data element. The method also comprises sending (1403) an indication of an association between the information representative of the first timestamp and the data element that the information representative of the first timestamp relates to. A method performed at a second node as well as apparatus for use at the first node and apparatus for use at the second node are also disclosed.Type: GrantFiled: December 1, 2017Date of Patent: August 10, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stefano Ruffini, Stefano Stracca
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Patent number: 10958504Abstract: Systems and methods described herein provide a method for operation, administration and maintenance (OAM) of data message transmission. The method comprises reading a transmit register of a transmitter associate with a first management entity to determine a transmit status of the transmit register. The method further comprises loading a data message into the transmit register when the transmit status of the transmit register indicates availability. The method further comprises embedding the data message as an out-of-band message with physical code sublayer modulation, and transmitting the out-of-band message on the physical code sublayer to a receiver associated with a second management entity. A transmit state machine of the transmitter and a receive state machine of the receiver establish a handshake to allow the out-of-band message to be passed asynchronously.Type: GrantFiled: October 7, 2019Date of Patent: March 23, 2021Assignee: Marvell Asia Pte, Ltd.Inventor: William Lo
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Patent number: 10939280Abstract: Techniques for optimizing user equipment radio capability signaling for wireless communications are described. In one technique, a type of network to access for communications is determined. A capability identifier(s) associated with a set(s) of user equipment (UE) radio capabilities is determined based, at least in part, on the type of network. The capability identifier(s) is sent to the network. Upon receiving an indication of the capability identifier(s), the set(s) of UE radio capabilities associated with the capability identifier(s) is identified and stored.Type: GrantFiled: April 2, 2019Date of Patent: March 2, 2021Assignee: QUALCOMM IncorporatedInventors: Gavin Bernard Horn, Haris Zisimopoulos, Masato Kitazoe, Aziz Gholmieh, Brian Clarke Banister
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Patent number: 10778545Abstract: A network state is verified in real-time by precomputing a data structure representing header spaces of data packets in respective equivalence classes (ECs) in a first snapshot of the network and in a second snapshot of the network at a later time. The data structure includes respective bitmaps indicating for each data packet forwarding rule for each node in the network a forwarding action to be taken for each EC in the network. The respective bitmaps store bits indicating for each data packet forwarding rule whether the data packet forwarding rule applies to the respective ECs in the network. The snapshots are compared to identify network paths that have changed between a time of the first snapshot and the second snapshot of the network and network verification operations are performed on the changed network paths as a logical function of a bitmap corresponding to each changed network path.Type: GrantFiled: July 19, 2018Date of Patent: September 15, 2020Assignee: Futurewei Technologies, Inc.Inventors: Yan Sun, Wei Xu, Kun Tan
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Patent number: 10728814Abstract: A method for upgrading an access controller that controls and coordinates a plurality of radio nodes (RNs) each associated with a cell in a cluster of cells belonging to a radio access network includes initializing a new access controller. The new access controller is to replace a current access controller currently controlling and coordinating the plurality of RNs cell in the cluster. A most lightly loaded one of the plurality of RNs is identified. All UEs currently attached to the identified RN is caused to be handed off to a neighboring cell in the cluster. After all the UEs have been handed-off from the identified RN, the identified RN is rebooted so that it is being controlled and coordinated by the new access controller. The steps of causing the UEs to be handed-off and rebooting the identified RN are repeated for a second one of the plurality of RNs.Type: GrantFiled: October 31, 2018Date of Patent: July 28, 2020Assignee: Corning Optical Communications LLCInventor: Darshan Purohit
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Patent number: 10708857Abstract: A tiered service management resource providing management of wireless channels in a network environment receives notification of wireless bandwidth such as multiple wireless channels allocated by a spectrum access system (a.k.a., SAS). The spectrum access system allocates the wireless channels for use by a wireless base station in the network environment. Prior to re-allocating the wireless bandwidth (such as a selected wireless channel) to customer premises equipment, the tiered service management resource further receives a communication indicating a wireless spectrum scan performed at a location from which customer premises equipment in the network environment is (being) installed to wirelessly communicate with the wireless base station.Type: GrantFiled: December 6, 2018Date of Patent: July 7, 2020Assignee: Charter Communications Operating, LLCInventors: Parmjit Dhillon, Sami Makinen, Umamaheswar A. Kakinada, Curt C. Wong
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Patent number: 10645604Abstract: A device may receive cell property data associated with a cell in a mobile network and performance data associated with the cell. The device may determine whether the performance data associated with the cell satisfies a performance threshold. The device may identify, based on determining that the performance data associated with the cell satisfies the performance threshold, one or more impacted cells, in the mobile network, associated with the cell. The device may determine one or more antenna adjustment parameters based on at least the cell property data associated with the cell, the performance data associated with the cell, and performance data associated with the one or more impacted cells. The device may perform, based on the one or more antenna adjustment parameters, an action in connection with at least one of an antenna associated with the cell or another antenna associated with the one or more impacted cells.Type: GrantFiled: June 4, 2018Date of Patent: May 5, 2020Assignee: Verizon Patent and Licensing Inc.Inventors: Ye Ouyang, Zhenyi Lin, Krishna Pichumani Iyer, Wenyuan Lu
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Patent number: 10498659Abstract: A method is provided in one example embodiment and may include configuring a slice identity for each of a plurality of virtual radio access network (vRAN) slices, wherein each vRAN slice comprises functionality to perform, at least in part, one or more radio protocol operations on subscriber traffic; configuring an allotment of radio resources that can be utilized by each vRAN slice of the plurality of vRAN slices; receiving, by a slice manager, a subscriber profile identity (SPID) for a subscriber; and mapping the SPID for the subscriber to a particular vRAN slice of the plurality of vRAN slices. The method can further include communicating the mapping for the subscriber to the particular vRAN slice to which the SPID is mapped. The method can further include communicating the allotment of radio resources that can be utilized by the particular vRAN slice to the particular vRAN slice.Type: GrantFiled: July 6, 2016Date of Patent: December 3, 2019Assignee: CISCO Technology, INC.Inventors: Oliver James Bull, Mark Grayson
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Patent number: 10447421Abstract: The present disclosure provides a fronthaul control device which can adjust a center wavelength of an optical signal to changeably control allocation of an optical wavelength band; an operating method of the fronthaul control device; a program for controlling allocation of an optical wavelength band; and a computer-readable recording medium in which the program is recorded.Type: GrantFiled: May 13, 2016Date of Patent: October 15, 2019Assignee: SK TELECOM CO., LTD.Inventors: Chang Soon Choi, Min Soo Na
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Patent number: 10432534Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments, a device of an intermediate node comprises: a receiving unit configured to receive a signal for determining a buffer threshold value of at least one terminal; and a control unit configured to determine a buffer threshold value of the terminal on the basis of the signal, and determine a size of data to be requested to at least one server according to the determined buffer threshold value of the terminal.Type: GrantFiled: August 27, 2015Date of Patent: October 1, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-Sung Lee, Jung-Shin Park, Han-Na Lim, Beom-Sik Bae, Hyung-Ho Lee, Joo-Hyung Lee
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Patent number: 10116545Abstract: Embodiments of the present application provide a method, device, and system for processing an OAM packet, where the method for processing an OAM packet includes: receiving, by a first network device, an operation, administration and maintenance (OAM) instruction sent by an OAM server, where the OAM instruction carries first format information and a first sending target identifier, where the first format information is used for indicating an OAM packet format; and generating, by the first network device, a first OAM packet according to the first format information, and sending the first OAM packet to a network device indicated by the first sending target identifier. The method, device, and system for processing an OAM packet provided in the embodiments of the present application achieve adaptability to different OAM standards without changing of a hardware structure of a network device, and improve OAM processing flexibility.Type: GrantFiled: July 30, 2015Date of Patent: October 30, 2018Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhiqiang Yu, Guoyi Chen, Lianshu Zheng
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Patent number: 10075335Abstract: In a software defined network, dataplane connectivity is established between a computing device in the network and a controller. The computing device receives a probe packet from the controller, and identifies a port of the computing device through which the probe packet was received. The computing device sets a local route for communication with the controller through the identified port. The computing device then establishes a connection with the controller through the local route. This procedure is reiterated to incrementally expand network connectivity to a plurality of network devices.Type: GrantFiled: February 7, 2017Date of Patent: September 11, 2018Assignee: Google LLCInventors: Lorenzo Vicisano, James Wanderer, Steven Padgett, Amin Vahdat
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Patent number: 9967855Abstract: A device may receive network congestion information relating to one or more connections. The network congestion information may identify respective utilizations of the one or more connections. The one or more connections may be associated with one or more access points. The device may cause the network congestion information to be provided to a set of user equipments (UEs) via a multicast transmission to cause one or more UEs, of the set of UEs, to switch from a first connection, of the one or more connections, to a second connection, of the one or more connections, based on the network congestion information. The one or more UEs may be connected to a network via a multicast connection.Type: GrantFiled: August 31, 2015Date of Patent: May 8, 2018Assignee: Verizon Patent and Licensing Inc.Inventors: Lalit R. Kotecha, Rakesh Chandwani
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Patent number: 9813312Abstract: A controller implemented on computing equipment may control switches in a network. The controller may provide flow tables that implement network policies to the switches to control packet forwarding through the network. The controller may provide debug table entries to the switches for use in a debug table that is separate from the flow table. The debug table entries may match incoming network packets and increment corresponding counters on the switches. The controller may retrieve count information from the counters for performing debugging operations on the network. For example, the controller may identify conflicts between fields of a selected flow table entry, determine whether elephant packet flows are present between switches, determine whether desired load balancing is being performed, determine whether a network path has changed, determine whether packet loss has occurred, and/or determine whether network packets are taking undesired paths based on the retrieved count information.Type: GrantFiled: February 19, 2015Date of Patent: November 7, 2017Assignee: Big Switch Networks, Inc.Inventors: Xin Wu, Rajneesh Bajpai, Robert W. Sherwood, Srinivasan Ramasubramanian, Gregor Mathias Maier, Richard Leegan Lane, II, Kenneth Hsinchao Chiang, Mei Yang
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Patent number: 9804884Abstract: A communication system includes a control device configured to calculate a packet forwarding path and set a flow based on the packet forwarding path in a node, and a plurality of nodes configured to forward a received packet based on a flow set by the control device. The control device, when receiving a detour instruction, calculates a new packet forwarding path which detours a detour target node and sets a flow based on the new packet forwarding path in the plurality of nodes on the new packet forwarding path.Type: GrantFiled: June 29, 2015Date of Patent: October 31, 2017Assignee: NEC CorporationInventors: Koji Ashihara, Junichi Yamato
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Patent number: 9794830Abstract: Access technology priority lists and related access list identifiers are maintained in a radio access system such that at least one access list identifier is associated with a plurality of access technology priority lists. Behavior of at least one communication device in the radio access system is controlled by selecting one of the access technology selection priority lists based on information (such as load conditions or quality of service class) regarding an access list identifier and the radio access system.Type: GrantFiled: May 27, 2013Date of Patent: October 17, 2017Assignee: Nokia Solutions and Networks OyInventors: Seppo Olavi Hämäläinen, Rauli Juhani Parkkali, Haitao Tang
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Patent number: 9769054Abstract: A network topology discovery method and system are disclosed, which relates to the field of software defined network architecture, and solves a problem that greater pressure is easily put on a control channel in a case that a great many switches and ports exist. The method includes: a controller receiving a message sent by a network device, wherein the message carries a device ID of a network device where a link far-end port of the network device is located and a port number of the link far-end port; and the controller performing topology discovery on a network according to the message. The technical scheme provided in the present document is applicable to a software defined network, which achieves that related parameters are carried to the controller via an OpenFlow protocol.Type: GrantFiled: April 15, 2014Date of Patent: September 19, 2017Assignee: ZTE CorporationInventor: Qilei Wang
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Patent number: 9722896Abstract: Networks devices interconnected via link groups may implement micro operations administration and maintenance (micro-OAM) sessions. The micro-OAM sessions may be used to monitor the status of individual links within the link groups at small time scales. The micro-OAM session may be implemented on a non-internet protocol (non-IP) layer. In some cases, independent micro-OAM sessions may be used to monitor different links within a link group.Type: GrantFiled: June 23, 2015Date of Patent: August 1, 2017Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Ashish Ramkrishna Sontakke, Vivek Kumar, Santhosh Kumar Chandrasekar, Mohan Venkatachar Kalkunte, Shahram Davari
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Patent number: 9706371Abstract: Embodiments relate to push notification middleware. A method includes receiving, at a notification service of a mobile platform server executing on a computer processor, a notification trigger including a payload to deliver to an endpoint. The method also includes accessing, by the notification service, a registry to determine a notification transport protocol associated with the endpoint. A channel plugin associated with the notification transport protocol is selected by the notification service to establish a notification channel with the endpoint, and the payload is sent to the endpoint on the notification channel.Type: GrantFiled: July 23, 2013Date of Patent: July 11, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Todd E. Kaplinger, Michael R. Rheinheimer, Brian L. White Eagle
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Patent number: 9699625Abstract: Embodiments relate to push notification middleware. A system includes a computer processor and a mobile platform server executable by the computer processor. The mobile platform server includes a notification service and a registry. The notification service is configured to receive a notification trigger including a payload to deliver to an endpoint and access the registry to determine a notification transport protocol associated with the endpoint. The notification service is further configured to select a channel plugin associated with the notification transport protocol to establish a notification channel with the endpoint and send the payload to the endpoint on the notification channel.Type: GrantFiled: July 18, 2013Date of Patent: July 4, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Todd E. Kaplinger, Michael R. Rheinheimer, Brian L. White Eagle
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Patent number: 9660904Abstract: A method for inserting an OpenFlow flow entry into a flow table is disclosed. In the embodiment, the method involves receiving a flow mod message at an OpenFlow-enabled switch, the flow mod message including a cookie field, decoding an OpenFlow flow entry from the flow mod message, identifying a flow table from the cookie field, and inserting the decoded flow entry into the flow table.Type: GrantFiled: February 10, 2015Date of Patent: May 23, 2017Assignee: Alcatel LucentInventors: Jayant Kotalwar, Andrew Dolganow, Girish Birajdar
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Patent number: 9660903Abstract: A method for inserting an OpenFlow flow entry into a flow table is disclosed. In the embodiment, the method involves receiving a flow mod message at an OpenFlow-enabled switch, the flow mod message including a cookie field, decoding an OpenFlow flow entry from the flow mod message, identifying a flow table from the cookie field, and inserting the decoded flow entry into the flow table.Type: GrantFiled: February 10, 2015Date of Patent: May 23, 2017Assignee: Alcatel LucentInventors: Jayant Kotalwar, Andrew Dolganow, Girish Birajdar
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Patent number: 9602374Abstract: A method and network element include receiving, at a receiver node, at least one of sender timestamps and sequence numbers in continuity check (CC) frames sent by a sender node; determining receiver timestamps at the receiver node; detecting instability based on one or more of the at least one of sender timestamps and sequence numbers and the receiver timestamps; and performing a remedial action based on the detecting instability. The CC frames can include Bidirectional Forwarding Detection (BFD) or Continuity Check Message (CCM) frames which are regularly transmitted in a session, but do not currently include timestamps or sequence numbers.Type: GrantFiled: July 21, 2014Date of Patent: March 21, 2017Assignee: Ciena CorporationInventors: Ashesh Mishra, Ankur Saxena, Mahesh Jethanandani
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Patent number: 9590888Abstract: The present document discloses a link keep-live method, a controller and a switch, including: acquiring link information by the controller, after the link information is acquired, sending the link information to a source switch and/or destination switch of a link corresponding to the link information; and, correspondingly sending keep-live mode information and a link keep-live starting instruction to the source switch and/or destination switch, triggering the source switch and/or destination switch to perform the link keep-live between the source switch and destination switch according to the link information and keep-live mode information; or, after the controller acquires the link information, sending the link information to the source switch and/or destination switch of the link corresponding to the link information, triggering the source switch and/or destination switch to determine a mode adopted for link keep-live, performing the link keep-live between the source switch and destination switch accordingType: GrantFiled: September 26, 2013Date of Patent: March 7, 2017Assignee: ZTE CorporationInventor: Renjie Yuan
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Patent number: 9577751Abstract: The present invention provides an Ethernet performance detection method and system and an optical network terminal. The method includes: receiving, by an ONT, a detection configuration instruction, and configuring a maintenance end point according to the detection configuration instruction; configuring a performance detection path from the MEP to the VMEP according to states of the virtual maintenance end points configured on a main node and a backup node, wherein the VMEP includes two virtual MEPs, the IDs of the two virtual MEPs are identical, at the same moment; and transmitting a message to a node corresponding to the virtual MEP with the main state. When the node states of the main node and backup node are switched, the optical network terminal may automatically switch the performance detection path to the node corresponding to the virtual MEP, in order to continue to perform the network performance detection.Type: GrantFiled: September 21, 2015Date of Patent: February 21, 2017Assignee: Huawei Technologies Co., Ltd.Inventors: Haibo Zhang, Jianfei Yue, Hongming Liu
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Patent number: 9509429Abstract: A method executed by an optical line terminal (OLT) in a passive optical network (PON). The PON includes a plurality of optical network units (ONUs) coupled with the OLT through an optical fiber, the ONUs sharing a bandwidth of the optical fiber. The method includes receiving, from the ONU, an energy conservation message indicating support for the reduced buffer memory size. The reduced buffer memory size is calculated based on the maximum committed transmission rate and the burst size limit for the downstream traffic intended for the ONU. A notification is transmitted to the ONU indicating that a portion of the buffer memory can be powered down such that only the reduced size of the buffer memory remains in operation, and downstream traffic intended for the ONU is transmitted at an average transmission rate and burst size not exceeding the maximum committed transmission rate and the burst size limit.Type: GrantFiled: March 6, 2013Date of Patent: November 29, 2016Assignee: Telefonaktiebolaget L M Ericsson (PUBL)Inventor: David Hood
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Patent number: 9503381Abstract: A system and method for carrying control data in a preamble. A control-data bearing preamble is defined to facilitate end-to-end labeling and control-data transport. This control-data bearing preamble provides a unified labeling scheme with minimal overhead, which facilitates greater ease in parsing. The control-data bearing preamble can be converted to/from other control/labeling schemes at the edge of the control-data bearing preamble aware portion of the network.Type: GrantFiled: March 4, 2013Date of Patent: November 22, 2016Assignee: BROADCOM CORPORATIONInventors: Lowell David Lamb, Glen Kramer, Lawrence Drew Davis
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Patent number: 9485162Abstract: The disclosure provides a method for measuring a frame loss ratio. A first end acquires a frame number of a received current measurement reply frame and a frame number of a received previous measurement reply frame, and judges whether the difference between the frame number of the current measurement reply frame and the frame number of the previous measurement reply frame is 1; if the difference is 1, the first end calculates the frame loss ratio according to count information carried in the current measurement reply frame and the previous measurement reply frame; and if the difference is greater than 1, the first end calculates the frame loss ratio according to the count information carried in the current measurement reply frame and the previous measurement reply frame and the difference.Type: GrantFiled: March 23, 2012Date of Patent: November 1, 2016Assignee: ZTE CORPORATIONInventor: Fuyou Zhang
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Patent number: 9439227Abstract: A WLAN access device includes a connecting module, a PING detecting module, and a wireless signal control module. The connecting module obtains an IP address from a DHCP. After the connecting module getting the IP address, the PING detecting module sends the PING messages to a gateway, and receives the corresponding response messages from the gateway. The wireless signal control module enables a wireless module of the WLAN access device to transmit wireless signals when the PING detecting module receives the corresponding response messages from the gateway. The present disclosure further provides a method of controlling wireless signals of the WLAN access device.Type: GrantFiled: March 27, 2014Date of Patent: September 6, 2016Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Ya-Ti Wei
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Patent number: 9369387Abstract: An example method for segment routing based wide area network (WAN) orchestration in a network environment is provided and includes monitoring a segment routing (SR) enabled WAN environment in at least near real-time by a path computation element (PCE) located outside the WAN, receiving an event notification at the PCE, and performing traffic engineering using SR to reroute traffic off shortest paths. In one embodiment, where a current state of the WAN is not pre-computed, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies, deploying the optimized routes in the WAN, re-optimizing routes for other parameters, and further deploying the re-optimized routes in the WAN. In another embodiment, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies and for other parameters, and deploying the optimized routes in the WAN.Type: GrantFiled: April 3, 2014Date of Patent: June 14, 2016Assignee: CISCO TECHNOLOGY, INC.Inventors: Clarence Filsfils, Thomas F. Telkamp, Alan Thornton Gous
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Patent number: 9357594Abstract: An LED driver for powering an LED fixture includes a power converter for converting an input power such as a rectified mains supply to an output power for powering the LED fixture; a control unit arranged to control an output characteristic of the power converter; optionally, a network terminal connected to the control unit for connecting the control unit to a network, the control unit being arranged to receive a control signal from the network via the network terminal for controlling the output characteristic; an application terminal connected to the control unit for connecting the control unit to a lighting device; the control unit being arranged to: provide a polling signal to the lighting device; receive, in response to the polling signal, a control signal for controlling the output characteristic.Type: GrantFiled: December 22, 2011Date of Patent: May 31, 2016Assignee: EldoLAB Holding B.V.Inventor: Marc Saes
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Patent number: 9210089Abstract: The present disclosure provides for carrying downstream mapping information in an echo request message and/or echo reply message, which can describe both IP (Internet Protocol) multipath information and label multipath information. A transit node (e.g., an LSR element) that receives an echo request message from an initiator node determines downstream mapping information, which is returned to the initiator node. Transit node determines whether a newly defined type of multipath information (type 10) should be generated to return the downstream mapping information, based on whether transit node performs load balancing based on labels or IP header information, and whether transit node imposes entropy labels. A multipath information type 10 element includes either IP multipath information or label multipath information, as well as associated label multipath information that includes one or more entropy labels that map to the IP or label multipath information being returned.Type: GrantFiled: December 18, 2013Date of Patent: December 8, 2015Assignee: Cisco Technology, Inc.Inventors: Nobushige Akiya, George Swallow, Carlos M. Pignataro, Nagendra Kumar
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Patent number: 9191290Abstract: The present invention relates to methods and devices for monitoring a data path extending from an originating node to a terminating node in a network. In a first aspect of the present invention, the method comprises the step of submitting, to the originating node, a request to monitor at least one network status parameter associated with a particular data flow transported on the data path. Further, the method comprises the step of submitting, to all nodes in the data path, a data flow identifier indicating the particular data flow being one out of a plurality of data flows that can be transported on the data path. Moreover, the method comprises the step of receiving, from at least one of the nodes in the data path, a response message comprising the requested at least one network status parameter.Type: GrantFiled: June 19, 2012Date of Patent: November 17, 2015Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Zhemin Ding, Panagiotis Saltsidis
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Patent number: 9184932Abstract: A system and method for providing Connectivity Fault Management, CFM, in a Provider Backbone Bridge Traffic Engineering, PBB-TE, telecommunication network utilizing Ethernet-based packet transport. PBB-TE point-to-point and point-to-multipoint services are identified, and PBB-TE maintenance points (31, 41) associated with the identified PBB-TE services are addressed. The addressed PBB-TE maintenance points are modified by adding a PBB-TE Service Demultiplexer (32, 42) to each PBB-TE maintenance point for identifying independent PBB-TE service instances. Basic CFM protocols are enhanced to duplicate the behavior of CFM protocols on virtual local area network, VLAN, based maintenance associations. The PBB-TE maintenance points may be Maintenance association End Points, MEPs, and Maintenance association Intermediate Points, MIPs.Type: GrantFiled: February 27, 2012Date of Patent: November 10, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventor: Panagiotis Saltsidis
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Patent number: 9178756Abstract: Embodiments of the present invention provide a method and a device for processing location information of a fault point. The method includes: obtaining, by an ingress node of an LDP LSP, first location information of a fault point on a link traversed by the LDP LSP, where the first location information of the fault point includes an identifier of an upstream node of the fault point and an identifier of an interface that is connected to the fault point and located on the upstream node of the fault point; and providing the first location information of the fault point to a user so that the user determines a location of the fault point corresponding to an LDP LSP fault. Therefore, the location of the fault point corresponding to the LDP LSP fault can be determined, and efficiency of troubleshooting specific to the LDP LSP fault can be improved.Type: GrantFiled: November 15, 2013Date of Patent: November 3, 2015Assignee: Huawei Technologies Co., Ltd.Inventors: Changsheng Sun, Yu Zhang, Linkun Chen
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Patent number: 9166900Abstract: A method of establishing a service operations administration and maintenance (OAM) session between an originator and a reflector in a communication network includes continuously monitoring, by the reflector, any test packets transmitted by the originator. The originator transmits to the reflector, at a time indicated by a first timestamp, a test packet. The reflector receives the test packet at a time indicated by a second timestamp and generates a unique flow identifier that identifies the reflector. The reflector transmits the test packet to the originator. The reflector assigns a sequence number to the test packet. The originator receives the test packet at a time indicated by a fourth timestamp. The reflector stores the unique flow identifier at least for the duration of the OAM session.Type: GrantFiled: November 24, 2014Date of Patent: October 20, 2015Assignee: Accedian Networks Inc.Inventor: Anders Wallman
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Patent number: 9118621Abstract: The present invention provides a novel network controller that does not need extensive development resources to add and expand functions of a communications protocol with maintaining high communication quality, does not generate waste of resources, is easy to maintain, and can be applied to embedded systems.Type: GrantFiled: December 26, 2012Date of Patent: August 25, 2015Assignee: Ricoh Company, Ltd.Inventor: Ryosuke Mizunashi
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Patent number: 9083602Abstract: Provided is a communication system which is provided with a plurality of communication devices and transfers a packet between the plurality of communication devices through a communication path. When a packet is looped back at any of the communication devices on the communication path to verify connectivity of the communication path, a first communication device of the plurality of communication devices stores, in a first region of header information of the packet, first information for designating the communication device at which the packet is looped back, further stores, in a second region of the header information of the packet, second information on a loopback point in the designated communication device at which the packet is looped back, and sends the packet to which the first information and the second information have been added.Type: GrantFiled: November 30, 2009Date of Patent: July 14, 2015Assignee: Hitachi, Ltd.Inventors: Hideki Endo, Taisuke Ueta, Yoshihiro Ashi, Norio Miyazaki
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Patent number: 9043449Abstract: An example method transmits a path message to an egress node, via intermediate nodes, that configures OAM monitoring of an entire connection between an ingress node and the egress node and also configures OAM monitoring of at least one segment of the connection shorter than the entire connection by at least one intermediate node. The path message comprises a LSP attributes object and an ERO. The LSP object comprises technology-specific attributes defining descriptors for configuring the egress node in accordance with a communication protocol utilized for the connection; and technology-independent OAM parameters that, irrespective of the communication protocol, define an OAM type to be used by the egress node, and define desired monitoring actions for the egress node to perform. The ERO comprises a respective HOP Attributes sub-object for configuring each of the at least one intermediate nodes.Type: GrantFiled: June 9, 2010Date of Patent: May 26, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: András Kern, Attila Takács