Patents by Inventor Nikhil Kumar Satyarthi

Nikhil Kumar Satyarthi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10824351
    Abstract: Systems and methods are described in which circuitry of a first controller of a first node receives a first signal indicating an optical loss of signal within the first path. Circuitry of a second controller of the first node on the first path within a transport network generates a second signal indicating a failure within the first path. The first controller accessing a network topology database determines that restoration of the first path would be ineffective due to there being no alternate path, and signals a second node downstream in the first path with the second signal indicating the failure within the first path, and a third signal indicating that restoration of the first path would be ineffective due to there being no alternate path.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: November 3, 2020
    Assignee: Infinera Corporation
    Inventors: Nikhil Kumar Satyarthi, Amit Satbhaiya, Sanjeev Ramachandran, Rajan Rao, Baranidhar Ramanathan
  • Publication number: 20200112365
    Abstract: A transport network, a node, and a method are disclosed. The transport network, the node, and the method detect a failure of a super channel originating from a sliceable light source that is routed through the transport network, by detecting an optical loss of signal by an optical power monitoring device, in presence or absence of an optical loss of signal of the complete band by at least one photo detector. This information is analyzed with a fault detection algorithm using a patch cable network configuration to determine a fault indication for a failure within the first node. The fault signal indicative of the fault indication is then passed to another node on the first path.
    Type: Application
    Filed: October 4, 2018
    Publication date: April 9, 2020
    Inventors: Amit Satbhaiya, Nikhil Kumar Satyarthi, Sanjeev Ramachandran, Rajan Rao, Baranidhar Ramanathan
  • Patent number: 10602246
    Abstract: Embodiments herein include methods and apparatuses for providing optical channel protection by a switching controller in an optical networking system. The switching controller may receive, from a light module, a digital fault status message that indicates whether a digital frame demodulated from an optical signal include a fault. The switching controller may receive from an Optical Supervisory Channel (OSC) module, an Optical Layer Defect Propagation (OLDP) status message that indicates an OSC status of the optical signal on a current optical path. The switching controller may receive, from an Optical Add Drop Multiplexer (OADM) module, an optical power status message that indicates a measured power level of the optical signal on the optical path. Based on at least one of the OLDP status, the optical power status, or the digital fault status message, the switching controller may determine the optical path as a working path or a protecting path.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: March 24, 2020
    Assignee: Infinera Corporation
    Inventors: Rajan Rao, Nikhil Kumar Satyarthi, Ashok Kunjidhapatham, Baranidhar Ramanathan, Biao Lu
  • Publication number: 20200059712
    Abstract: A system and method is disclosed in which circuitry of a first controller of a first node on a first path within a transport network receives a first signal indicating a failure within the first path from a second controller. The first node is an end node of the first path. A first client signal failure clear signal is received from a second node upstream of the first node on the first path. The first client signal failure clear signal indicates that a non-restorable fault has been resolved such that the first path can be considered for carrying data traffic. The non-restorable fault is a failure at the source. Subsequent to receiving the first signal indicating the failure within the first path, a backward defect indication clear signal is transmitted to the second node, the backward defect indication clear signal indicating an absence of a failure in the first path.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 20, 2020
    Inventors: Nikhil Kumar Satyarthi, Amit Satbhaiya, Sanjeev Ramachandran, Rajan Rao, Baranidhar Ramanathan, Dileep Padala, Dinesh Kumar Prakasam
  • Patent number: 10447420
    Abstract: Embodiments include methods and apparatuses for providing at least one signaling indication of a super-channel by a power controller in a Wavelength Division Multiplexing (WDM) system. The power controller may receive a service provisioning and a lock state from a network management entity. The power controller may receive, from an optical fabric unit, a fabric state that indicates whether a pass-band of the super-channel is provisioned. The power controller may receive the power level of the super-channel from a power monitoring unit. Based on the power level and attenuation level of the super-channel, the power controller may determine a ramp state that indicates whether the power level reached to a predetermined power. The power controller may determine an alarm state based on the power level. The power controller may determine the signaling indication based on the service provisioning, lock, fabric, ramp, and alarm states.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: October 15, 2019
    Assignee: Infinera Corporation
    Inventors: Rajan Rao, Nikhil Kumar Satyarthi, Parveen Kumar Gupta, Sowmya Mahadevaiah, Sanjeev Ramachandran, Baranidhar Ramanathan, Ramakrishnan Subramanian
  • Patent number: 10389469
    Abstract: Systems, methods, and devices for adding an alien or native wavelength optical signal to a fiber optic line. A portion of a spectrum of the fiber optic line corresponding to the optical signal is blocked with a wavelength selective switch (WSS). The portion of the spectrum is gradually unblocked until a power of the optical signal measured after the WSS is equal to a predetermined level. If the power and characteristics of the optical signal after the WSS satisfy one or more criteria, the portion of the spectrum is further unblocked until the power of the optical signal measured at the output is equal to an operational level.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: August 20, 2019
    Assignee: Infinera Corporation
    Inventors: Omer Faruk Yilmaz, Nikhil Kumar Satyarthi, Parveen Kumar Gupta, Jaijo Jose, Saurabh Kumar, Stephane St. Laurent
  • Publication number: 20190007131
    Abstract: Systems and methods are described in which circuitry of a first controller of a first node receives a first signal indicating an optical loss of signal within the first path. Circuitry of a second controller of the first node on the first path within a transport network generates a second signal indicating a failure within the first path. The first controller accessing a network topology database determines that restoration of the first path would be ineffective due to there being no alternate path, and signals a second node downstream in the first path with the second signal indicating the failure within the first path, and a third signal indicating that restoration of the first path would be ineffective due to there being no alternate path.
    Type: Application
    Filed: August 17, 2018
    Publication date: January 3, 2019
    Inventors: Nikhil Kumar Satyarthi, Amit Satbhaiya, Sanjeev Ramachandran, Rajan Rao, Baranidhar Ramanathan
  • Patent number: 9973294
    Abstract: A node in an optical network may include a wavelength selective switch (WSS) and a processor. The wavelength selective switch may have a plurality of input ports and a plurality of output ports for routing and/or power-controlling of optical slices. The wavelength selective switch may have a plurality of control passbands, each control passband including a one or more optical slices. The processor may determine a passband group (PBG) having a plurality of PBG passbands, each of the plurality of PBG passbands corresponding to a particular control passband. The PBG may be used to translate control information, notifications, and/or instructions.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: May 15, 2018
    Assignee: Infinera Corporation
    Inventors: Parveen Kumar Gupta, Nikhil Kumar Satyarthi, Omer Faruk Yilmaz
  • Publication number: 20180076919
    Abstract: Systems, methods, and devices for adding an alien or native wavelength optical signal to a fiber optic line. A portion of a spectrum of the fiber optic line corresponding to the optical signal is blocked with a wavelength selective switch (WSS). The portion of the spectrum is gradually unblocked until a power of the optical signal measured after the WSS is equal to a predetermined level. If the power and characteristics of the optical signal after the WSS satisfy one or more criteria, the portion of the spectrum is further unblocked until the power of the optical signal measured at the output is equal to an operational level.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 15, 2018
    Applicant: Infinera Corporation
    Inventors: Omer Faruk Yilmaz, Nikhil Kumar Satyarthi, Parveen Kumar Gupta, Jaijo Jose, Sitaraman Padmanabhan, Saurabh Kumar
  • Publication number: 20180048415
    Abstract: A node in an optical network may include a wavelength selective switch (WSS) and a processor. The wavelength selective switch may have a plurality of input ports and a plurality of output ports for routing and/or power-controlling of optical slices. The wavelength selective switch may have a plurality of control passbands, each control passband including a one or more optical slices. The processor may determine a passband group (PBG) having a plurality of PBG passbands, each of the plurality of PBG passbands corresponding to a particular control passband. The PBG may be used to translate control information, notifications, and/or instructions.
    Type: Application
    Filed: August 12, 2016
    Publication date: February 15, 2018
    Inventors: Parveen Kumar GUPTA, Nikhil Kumar SATYARTHI, Omer Faruk YILMAZ
  • Publication number: 20170353264
    Abstract: Embodiments include methods and apparatuses for providing at least one signaling indication of a super-channel by a power controller in a Wavelength Division Multiplexing (WDM) system. The power controller may receive a service provisioning and a lock state from a network management entity. The power controller may receive, from an optical fabric unit, a fabric state that indicates whether a pass-band of the super-channel is provisioned. The power controller may receive the power level of the super-channel from a power monitoring unit. Based on the power level and attenuation level of the super-channel, the power controller may determine a ramp state that indicates whether the power level reached to a predetermined power. The power controller may determine an alarm state based on the power level. The power controller may determine the signaling indication based on the service provisioning, lock, fabric, ramp, and alarm states.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 7, 2017
    Applicant: Infinera Corporation
    Inventors: Rajan Rao, Nikhil Kumar Satyarthi, Parveen Kumar Gupta, Sowmya Mahadevaiah, Sanjeev Ramachandran, Baranidhar Ramanathan, Ramakrishnan Subramanian
  • Publication number: 20170338887
    Abstract: Embodiments herein include methods and apparatuses for providing optical channel protection by a switching controller in an optical networking system. The switching controller may receive, from a light module, a digital fault status message that indicates whether a digital frame demodulated from an optical signal include a fault. The switching controller may receive from an Optical Supervisory Channel (OSC) module, an Optical Layer Defect Propagation (OLDP) status message that indicates an OSC status of the optical signal on a current optical path. The switching controller may receive, from an Optical Add Drop Multiplexer (OADM) module, an optical power status message that indicates a measured power level of the optical signal on the optical path. Based on at least one of the OLDP status, the optical power status, or the digital fault status message, the switching controller may determine the optical path as a working path or a protecting path.
    Type: Application
    Filed: May 22, 2017
    Publication date: November 23, 2017
    Applicant: Infinera Corporation
    Inventors: Rajan Rao, Nikhil Kumar Satyarthi, Ashok Kunjidhapatham, Baranidhar Ramanathan, Biao Lu
  • Patent number: 9722723
    Abstract: The present invention and its embodiments are made to provide for dynamic hitless resizing in optical transport network without any identification of matching time slots by the Network Management System (NMS) or any control plane signaling including Generalised Multi Protocol Label Switching (GMPLS). An aspect of the invention provides for a method of hitless ODUflex connection resizing in an optical transport network by incrementing or decrementing the ODUflex connection between the nodes, based on an indication command given to a source node for bandwidth increase or decrease, by identifying and matching at least one time slot through Link Connection Resizing (LCR) protocol message exchanges. Another aspect of the invention provides for a method of hitless ODUflex connection resizing in an optical transport network by decrementing the matching time slot used for the incrementing operation, in case of unsuccessful incrementing operation between nodes.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 1, 2017
    Assignee: TEJAS NETWORKS LTD.
    Inventors: Nishant Sharma, Nikhil Kumar Satyarthi
  • Patent number: 9110798
    Abstract: The various embodiments herein provide a method and system for providing protection switching at a client layer on squelching of clients by a server layer protection controller in a nested protection system. The method comprises of marking a plurality of alarms of a pre-defined pattern and disabling a hold-off period for the plurality of marked alarms on receiving a squelch operation indication. The system comprises of one or more hold-off timers pre-configured with a hold off period and an alarm filter and hold-off processor (AFHP) for disabling the hold-off timer to invalidate the hold-off period for the plurality of marked alarms, wherein the plurality of marked alarms is an AIS generated due to squelching.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: August 18, 2015
    Assignee: TEJAS NETWORKS LIMITED
    Inventors: Nikhil Kumar Satyarthi, Nishant Sharma
  • Patent number: 9008502
    Abstract: The various embodiments herein provide a method and system for protecting multiple work ODU failures using a higher capacity protect ODU in an Optical Transport Network. The method for protecting multiple work ODU failures in an Optical Transport Network comprising steps of detecting signal failures in at least one of a plurality of work ODUs, requesting for release of one or more time-slots for a defective work ODU and allocating the one or more time-slots of a low priority traffic from the protect ODU in an incremental manner of priority. The method apply a TPN based policy for defining lower ODUs, performs handshaking between the transmit and downstream ends using the protocol provided, defines the role and behavior of the various system components and the service requests and performs an automatic lockout of protection for the work ODU in which an UDI alarm is present.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: April 14, 2015
    Assignee: Tejas Networks Limited
    Inventors: Nishant Sharma, Nikhil Kumar Satyarthi, Vivek Subramanian
  • Publication number: 20140079402
    Abstract: The present invention and its embodiments are made to provide for dynamic hitless resizing in optical transport network without any identification of matching time slots by the Network Management System (NMS) or any control plane signaling including Generalised Multi Protocol Label Switching (GMPLS). An aspect of the invention provides for a method of hitless ODUflex connection resizing in an optical transport network by incrementing or decrementing the ODUflex connection between the nodes, based on an indication command given to a source node for bandwidth increase or decrease, by identifying and matching at least one time slot through Link Connection Resizing (LCR) protocol message exchanges. Another aspect of the invention provides for a method of hitless ODUflex connection resizing in an optical transport network by decrementing the matching time slot used for the incrementing operation, in case of unsuccessful incrementing operation between nodes.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 20, 2014
    Applicant: Tejas Netowrks Limited
    Inventors: Nishant Sharma, Nikhil Kumar Satyarthi