Patents by Inventor Murali Narasimha

Murali Narasimha 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).

  • Publication number: 20220173834
    Abstract: A method for network coding at a packet data convergence protocol (PDCP) layer by a next-generation NodeB (gNB) includes selecting a coding coefficient from a location in a Vandermonde matrix. The method includes setting an identifier value identifying the location in the Vandermonde matrix corresponding to the selected coding coefficient. The method includes encoding one or more packets each comprising a PDCP data unit. The encoding of at least one of the one or more packets includes applying a function to data in the packet, the function including the coding coefficient. The method includes generating a message comprising the at least one encoded packet. The method includes transmitting the message to a user equipment (UE).
    Type: Application
    Filed: April 10, 2020
    Publication date: June 2, 2022
    Inventors: Gabriel Arrobo VIDAL, Qian LI, Murali NARASIMHA
  • Publication number: 20220159768
    Abstract: This disclosure provides techniques for recovery techniques to address link failure in multi-hop backhaul relay network. For example, a central unit (CU) node receives, uplink transmissions originating from a user equipment (UE) via a backhaul relay including a first distributed unit (DU) node and a second DU node. The CU then receives a first UL status message associated with a link failure between the first DU node the second DU node. Then the CU generates a second UL status message indicating a sequence number (SN) of a lost packet caused by the link failure or a SN of a last successfully received packet before the link failure, and transmits the second UL status message to the first DU node.
    Type: Application
    Filed: February 25, 2020
    Publication date: May 19, 2022
    Applicant: Apple Inc.
    Inventors: Jing ZHU, Murali NARASIMHA
  • Publication number: 20220132372
    Abstract: Disclosed herein are systems and methods of handling user traffic in an integrated access backhaul (IAB) network. For instance, a data counter for two or more of a plurality of user equipment (UE) bearers handled by an IAB node can be configured. Data corresponding to the two or more UE bearers of the plurality of UE bearers can be received. A first UE bearer can be selected. The first UE bearer is the UE bearer having the lowest data counter value of the two or more UE bearers. Data corresponding to the first UE bearer can be transferred to a mobile terminal (MT) in the IAB node. The data counter for the first UE bearer can be increased by a total size of the transferred data.
    Type: Application
    Filed: February 12, 2020
    Publication date: April 28, 2022
    Applicant: Apple Inc.
    Inventor: Murali NARASIMHA
  • Publication number: 20220132420
    Abstract: A user equipment (UE), or other network component can operate to generate listen-before-talk (LBT) operations in order to manage power consumption by configuring the discontinuous reception (DRX) in a dynamic manner. The UE can configure an extended active time for the DRX based on whether the LBT is successful and an acquisition channel indication from a base station, e.g., a next generation NodeB (gNB). The UE can operate aperiodic wakeup occasions with or independently of periodic DRX on-durations to better manage power while monitoring a channel for unlicensed carrier communications.
    Type: Application
    Filed: March 26, 2020
    Publication date: April 28, 2022
    Inventors: Murali Narasimha, Seau S. Lim, Anthony Lee, Yongjun Kwak
  • Publication number: 20220109622
    Abstract: The present disclosure is related to multi-access traffic management in multi-access computing environments. A reliability enhancement engine (REE) operated by a multi-access multipath traffic manager identifies traffic flows that have high reliability requirements (“reliability flows”) and performs admission control for the reliability flows. The REE determines a coding rate (e.g., a redundancy factor) and traffic distribution strategies for the identified reliability flows. The REE applies cross-access network coding (NC) on the reliability flows, and handles multi-access acknowledgements and traffic pacing, which may involve multiplexing traffic of the reliability flows with non-high-reliability traffic. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: December 14, 2021
    Publication date: April 7, 2022
    Inventors: Shu-ping Yeh, Wei Mao, Hosein Nikopour, Shilpa Talwar, Murali Narasimha, Jingwen Bai
  • Publication number: 20220104277
    Abstract: Embodiments disclosed herein include methods and apparatuses that enable the UE to transmit message 3 in an NTN network. A gNB can include, a time duration indicating the time at which the UE should transmit message 3. The network can ensure that the UE has adequate time to apply the timing advance, assemble and transmit message 3. The UE can compute time of UL grant application based on a timing advance. The time of application of the UL grant can be determined by the UE and by the gNB according to a specified rule.
    Type: Application
    Filed: January 27, 2020
    Publication date: March 31, 2022
    Inventor: Murali Narasimha
  • Publication number: 20220086786
    Abstract: Methods and apparatus are described for carrying out timing adjustments in a wireless communications network. The approach includes a user equipment (UE) that includes processor circuitry and a radio front end circuitry. The processor circuitry is configured to obtain a timing advance value for the wireless communication with a satellite base station, and to determine a transmission time for transmission of a random access channel (RACH) preamble based on the timing advance value. The radio front end circuitry transmits the random access preamble at the transmission time. Finally, the processor circuitry is further configured to receive a response to the transmitted random access preamble.
    Type: Application
    Filed: January 8, 2020
    Publication date: March 17, 2022
    Inventors: Murali Narasimha, Youn Hyoung Heo, Yujian Zhang
  • Patent number: 11259356
    Abstract: Methods and structures are disclosed which facilitate handling discontinuous reception (DRX) in Long Term Evolution (LTE) type communication signal reception and transmission using one carrier, such as a licensed carrier, and another carrier, such as an unlicensed carrier, in the presence of other transmissions using the other carrier.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: February 22, 2022
    Assignee: Motorola Mobility LLC
    Inventors: Murali Narasimha, Vijay Nangia, Ajit Nimbalker, Ravikiran Nory
  • Publication number: 20220053408
    Abstract: Systems and methods of reducing control plane latency in a 5G IAB network are described. SRs transmitted between nodes indicate that a control plane PDU is to be transmitted. The SRs use periodic resources or OCCs reserved for control plane signaling and are initiated by an RRC message or RACH from the UE. The SRs are initiated if the LCD field in the MAC subheader of the RRC message indicates the CCCH or the DCCH logical channel. If the PDU is available after the original resource, a resource is used that is provided via another grant, which is periodically provided or automatically initiated due to failure to transmit on the original grant. The SR or RRC message can also specify a delayed timeslot for the grant. For contention-based procedures the RACH preamble is randomly selected or selected from among a set of RACH preambles assigned for RRC procedures.
    Type: Application
    Filed: September 25, 2019
    Publication date: February 17, 2022
    Inventors: Yujian ZHANG, Qian LI, Youn Hyoung HEO, Sudeep K. PALAT, Murali NARASIMHA
  • Publication number: 20220038893
    Abstract: An apparatus and system for reducing URLLC latency are described. A single packet mode is described in which, when a packet arrives at the PDCP layer for transmission, an indication is sent to a scheduler with the expected size of the packet after ciphering. The packet is then sent to the RLC layer and concurrently submitted to the ciphering engine to enable ciphering to occur in parallel with the other activities. The scheduler determines the expected TB size for transmission of the packet by determining the size of the PDCP, MAC, and RLC headers. The scheduler matches the resource allocation for transmission to the expected TB size.
    Type: Application
    Filed: August 5, 2021
    Publication date: February 3, 2022
    Inventors: Murali Narasimha, Yujian Zhang, Fatemeh Hamidi-Sepehr, Qian Li, Mustafa Emara
  • Publication number: 20210385032
    Abstract: A base station can operate a first serving cell on a licensed carrier frequency and a second serving cell on an unlicensed carrier frequency. The base station can perform a listen before talk (LBT) on the unlicensed carrier frequency for a first time duration. The base station can determine that the unlicensed carrier frequency is free. The base station can transmit an activation command on the first serving cell for receipt by a UE, the activation command being configured to activate the UE to receive transmissions from the base station on the second serving cell. The base station can transmit after determining that the unlicensed carrier frequency is free, a reserve transmission on the unlicensed carrier frequency at least until the base station begins transmission of the activation command on the first serving cell.
    Type: Application
    Filed: August 24, 2021
    Publication date: December 9, 2021
    Inventors: Ravikiran Nory, Vijay Nangia, Murali Narasimha, Ajit Nimbalker
  • Publication number: 20210378041
    Abstract: Systems, method, and devices provide for recovery from backhaul failures for Integrated Access and Backhaul (IAB) communication systems with multi-hop routing.
    Type: Application
    Filed: September 26, 2019
    Publication date: December 2, 2021
    Inventors: Murali Narasimha, Qian Li, Jaemin Han, Alexander Sirotkin
  • Publication number: 20210377116
    Abstract: Embodiments of a virtualized radio-access network (RAN) node configured to implement functions including an O-RAN Distributed Unit (DU), an O-RAN Radio Unit (RU), an O-RAN Central Unit-Control Plane (CU-CP), and an O-RAN Central Unit-User Plane (CU-UP), are described herein. In some embodiments, a reliability enhancement strategy is determined according to measurement reports collected from user equipment (UEs), the DU and the CU-UP.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 2, 2021
    Inventors: Shu-ping Yeh, Jaemin Han, Wei Mao, Jingwen Bai, Murali Narasimha
  • Publication number: 20210368501
    Abstract: A computer-readable storage medium that stores instructions for execution by one or more processors of a UE. The instructions to configure the UE for a streamlined transmission during low latency communications in a wireless network and to cause the UE to decode configuration signaling from a base station. The configuration signaling configures SR occasions for the UE. The UE detects availability of a UL data packet from an application layer, a size of the UL data packet being higher than a size of a TTI associated with a pre-defined slot boundary. An SR is encoded for transmission during one of the SR occasions, the SR including an indication based on the size. Control information is decoded in response to the SR, the control information including a scheduling grant based on the size of the UL data packet. The UL data packet is encoded for transmission using the scheduling grant.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Inventors: Fatemeh Hamidi-Sepehr, Murali Narasimha, Yujian Zhang, Mustafa Emara, Qian Li
  • Publication number: 20210352666
    Abstract: Embodiments of an integrated access and backhaul (IAB) donor, IAB node, and methods of communication are generally described herein. An IAB network may comprise a plurality of IAB nodes to operate as relays between the IAB donor and one or more User Equipment (UE). The IAB donor may, for each of the IAB nodes, allocate a plurality of subframes to the IAB node. Each allocated subframe may have a subframe type that is one of: a downlink subframe, an uplink subframe, a flexible subframe or a not available subframe. The IAB donor may transmit, from a central unit (CU) of the IAB donor to a distributed unit (DU) an IAB node over an F1 interface, a resource coordination request message that indicates the subframe types of the plurality of subframes.
    Type: Application
    Filed: October 29, 2019
    Publication date: November 11, 2021
    Inventors: Alexander SIROTKIN, Qian LI, Lili WEI, Dawei YING, Geng WU, Jaemin HAN, Murali NARASIMHA, Youn Hyoung HEO, Sudeep K. PALAT
  • Publication number: 20210345163
    Abstract: Technology for an Integrated Access and Backhaul (IAB) node in an IAB network is disclosed. The IAB node can decode, at a distributed unit (DU) of the IAB node, a first resource request received from one of a user equipment (UE) or a child IAB node, wherein the first resource request is associated with the UE. The IAB node can encode, at a mobile terminal (MT) of the IAB node, a second resource request for transmission to the parent IAB node or the IAB donor triggered by receipt of the first resource request, wherein the second resource request is transmitted prior to a receipt of a protocol data unit (PDU) at the DU of the IAB node.
    Type: Application
    Filed: October 16, 2019
    Publication date: November 4, 2021
    Inventors: Murali Narasimha, Bharat Shrestha
  • Publication number: 20210306904
    Abstract: Systems and methods provide flow control for uplink traffic in an integrated access and backhaul network. A first relay node determines that its uplink buffer has reached an occupancy level higher than a pre-determined level. In response, the first relay node transmits, to a second relay node associated with the first relay node, a message indicating a buffer occupancy status of the uplink buffer of the first relay node.
    Type: Application
    Filed: August 8, 2019
    Publication date: September 30, 2021
    Inventors: Murali Narasimha, Sudeep Palat, Candy Yiu
  • Publication number: 20210250155
    Abstract: A network controller may configure one or more channel state information-reference signal (CSI-RS) configurations for transmitting RSs to user equipments (UEs) for tracking. A CSI-RS configuration may specify a set of CSI-RS resources for transmitting RSs in two consecutive slots. The set of CSI-RS resources may include a plurality of one-port CSI-RS resources configured according to the CSI-RS configuration. The CSI-RS configuration may specify a quasi co-location (QCL) configuration including a set of QCL parameters, where a demodulation reference signal (DMRS) has a QCL relationship with the RS with respect to the set of QCL parameters. The network controller may signal the one or more CSI-RS configurations to UEs.
    Type: Application
    Filed: April 27, 2021
    Publication date: August 12, 2021
    Inventors: Qian Cheng, Weimin Xiao, Jialing Liu, Murali Narasimha
  • Publication number: 20210211928
    Abstract: Provided herein is an apparatus and a method for congestion handling in RAN. The disclosure provides an apparatus for a relay node in a RAN including the relay node and a donor node providing an interface to a core network and a backhaul link to the relay node. The apparatus includes a RF interface to receive and transmit downlink data for one or more UEs or UE bearers; and a processing circuitry coupled with the RF interface. The processing circuitry is to determine a downlink congestion occurs at the relay node; and generate a downlink congestion indication to identify a UE or a UE bearer or a backhaul RLC channel affected by the downlink congestion. The RF interface is to transmit the downlink congestion indication to the donor node. In addition to the downlink congestion handling, the relay node can also be to handle uplink congestion in a similar way.
    Type: Application
    Filed: September 5, 2019
    Publication date: July 8, 2021
    Applicant: Apple Inc.
    Inventors: Murali NARASIMHA, Jaemin HAN, Candy YIU, Alexander SIROTKIN
  • Patent number: 10992442
    Abstract: A network controller may configure one or more channel state information-reference signal (CSI-RS) configurations for transmitting RSs to user equipments (UEs) for tracking. A CSI-RS configuration may specify a set of CSI-RS resources for transmitting RSs in two consecutive slots. The set of CSI-RS resources may include a plurality of one-port CSI-RS resources configured according to the CSI-RS configuration. The CSI-RS configuration may specify a quasi co-location (QCL) configuration including a set of QCL parameters, where a demodulation reference signal (DMRS) has a QCL relationship with the RS with respect to the set of QCL parameters. The network controller may signal the one or more CSI-RS configurations to UEs.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 27, 2021
    Assignee: Futurewei Technologies, Inc.
    Inventors: Qian Cheng, Weimin Xiao, Jialing Liu, Murali Narasimha