Patents by Inventor Santhan Thangarasa

Santhan Thangarasa 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: 20210112431
    Abstract: A method, system and apparatus are disclosed. A network node configured to communicate with a wireless device (WD) is provided. The network node is configured to, and/or includes a radio interface and/or includes processing circuitry configured to: determine a radio link monitoring (RLM) state of a wireless device that is served by a first cell and configured to operate with at least a first operational mode and a second operation mode within an overlapping time, and schedule at least one signal associated with the wireless device based on the RLM state.
    Type: Application
    Filed: May 10, 2019
    Publication date: April 15, 2021
    Inventors: Muhammad Ali KAZMI, Florent MUNIER, Santhan THANGARASA, Zhenhua ZOU, Kazuyoshi UESAKA
  • Publication number: 20210105719
    Abstract: A method in a user equipment (UE) (210, 1000, 1100) is disclosed. The method comprises determining (902) that a paging message has been received or that a radio resource control (RRC) state of the UE has changed. The method comprises using (904) a normal measurement mode (105) for a period of time after the paging message has been received or the RRC state of the UE has changed. The method comprises determining (906), based on one or more criteria being satisfied, to enter a relaxed measurement mode (110) after the period of time.
    Type: Application
    Filed: April 3, 2019
    Publication date: April 8, 2021
    Inventors: Santhan Thangarasa, Muhammad Kazmi
  • Patent number: 10952167
    Abstract: Methods and Devices for performing a device-to-device, D2D, operation are disclosed. A first reference timing for each of two or more non-terrestrial synchronization sources is obtained. Further a second reference timing of a terrestrial synchronization source is obtained. One of the non-terrestrial synchronization sources is determined based on a comparison between the first reference timings and the second reference timing, and the D2D operation is performed using the first reference timing of the determined non-terrestrial synchronization source.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 16, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Kazmi, Iana Siomina, Santhan Thangarasa
  • Publication number: 20210068075
    Abstract: Exemplary embodiments include methods and/or procedures for operating a wireless device (420, 1210) in communication with a first network node. Exemplary embodiments include receiving (902), from the first network node, an indication of at least one repetition method used in a broadcast channel transmitted by a second network node (401, 1260), wherein the repetition method comprises: a first portion of an information block in first resources of the broadcast channel that are reserved for the information block; and a second portion of the information block, comprising at least a subset of the first portion, in second resources of the broadcast channel that are different from the first resources. Exemplary embodiments also include receiving (904) the broadcast channel transmitted by the second network node, and decoding (906) the information block by combining the first portion and the second portion.
    Type: Application
    Filed: October 2, 2018
    Publication date: March 4, 2021
    Inventors: Kazuyoshi Uesaka, Muhammad Kazmi, Santhan Thangarasa
  • Patent number: 10939314
    Abstract: Embodiments herein relate to a method performed by a wireless device (10) for enabling the wireless device (10) to perform RLM of a cell (11) of a network node (12) in a wireless communication network (1). The wireless device (10) sends to a network node (12) serving the wireless device (10), e.g. the network node providing the cell, an indication indicating at least one recommended repetition level and/or recommended aggregation level, of at least one radio signal and/or control channel.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: March 2, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Santhan Thangarasa, Muhammad Kazmi, Iana Siomina, Kazuyoshi Uesaka
  • Patent number: 10917917
    Abstract: A method in a User Equipment (UE) is provided. The method comprises: obtaining a request to transmit a random access message on a non-anchor carrier to a network node; determining a coverage enhancement (CE) level of the UE with respect to the non-anchor carrier based on a first procedure for the non-anchor carrier, the first procedure for the non-anchor carrier being based on a second procedure associated with an anchor carrier; determining radio resources associated with the determined CE level for transmitting the random access message; transmitting to the network node the random access message on the non-anchor carrier using the determined radio resources. A UE for performing this method is also provided.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: February 9, 2021
    Assignee: Telefonaktiebolaget Ericsson LM (publ)
    Inventors: Muhammad Kazmi, Santhan Thangarasa, Joakim Axmon
  • Publication number: 20210037469
    Abstract: Systems and methods for transmission and reception of a wake-up signal having a determined maximum length that is related to a maximum repetition value of another signal are disclosed. Embodiments of a method in a wireless device for determining a maximum length of a wake-up signal representing a maximum duration of the wake-up signal, the WUSmax value being related to a maximum repetition value representing a maximum number of repetitions of signals transmitted by a network node in a cellular communications network are disclosed. In some embodiments, the method in the wireless device includes receiving a Rmax value from the network node, determining a WUSmax value based on the Rmax value, and attempting to detect a wake-up signal from the network node using the determined WUSmax value.
    Type: Application
    Filed: February 19, 2019
    Publication date: February 4, 2021
    Inventors: Magnus ÅSTRÖM, Santhan THANGARASA, Yutao SUI, Johan BERGMAN
  • Publication number: 20200413311
    Abstract: A method is performed in a wireless communication system (10). The method may comprise ranking a first cell (22A) and a second cell (22B) of the wireless communication system (10) according to one or more defined cell-ranking criteria. The method may also comprise evaluating that the second cell (22B) has met a reselection criterion for a wireless device (16), provided that the second cell (22B) is ranked better than the first cell (22A) by at least a margin. The value of the margin may depend on a coverage level of the wireless device (16) with respect to the first cell (22A) and a coverage level of the wireless device (16) with respect to the second cell (22B).
    Type: Application
    Filed: October 11, 2017
    Publication date: December 31, 2020
    Inventors: Santhan Thangarasa, Muhammad Kazmi
  • Publication number: 20200367234
    Abstract: Methods and systems for signaling Supplementary Activity Configuration (SAC) for lean carrier operation are provided. According to one aspect, a method performed by a wireless device for lean carrier operation during which Cell-specific Reference Signals (CRSs) are transmitted by a base station using a reduced bandwidth during an inactive time of a Discontinuous Reception (DRX) mode of operation excluding a Warm Up (WU) period that occurs immediately before a DRX active time and a Cool Down (CD) period that occurs immediately after a DRX active time, comprises: determining a number M of subframes to comprise a WU period; determining a number N of subframes to comprise a CD period; and transmitting an indication of the determined numbers M and N to a base station currently serving the wireless device.
    Type: Application
    Filed: February 15, 2019
    Publication date: November 19, 2020
    Inventors: Mattias BERGSTRÖM, Muhammad KAZMI, Santhan THANGARASA, Iana SIOMINA
  • Patent number: 10798600
    Abstract: Systems and methods are disclosed herein that relate to configuration of measurements gaps to be applied by a wireless device for a non-serving carrier on which the wireless device intended or is expected to perform Device-to-Device (D2D) operations. In some embodiments, a method of operation of a network node comprises determining whether a wireless device that is configured with a serving cell that operates on a first frequency is synchronized to a non-serving cell that operates on a second frequency, which is a non-serving frequency. The method further comprises determining whether to configure the wireless device to apply a first or second measurement gap configuration based upon whether the wireless device is synchronized to the non-serving cell and transmitting information to the wireless device that configures the wireless device to apply the determined measurement gap configuration.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: October 6, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Santhan Thangarasa, Muhammad Kazmi, Marco Belleschi, Mats Folke
  • Publication number: 20200304940
    Abstract: A method in a network node (115) is disclosed for managing interruptions to Wide Area Network, WAN, operation of a wireless device (110), wherein the wireless device provides Proximity Services, ProSe, over at least two carriers (305, 310). The method comprises determining (804) a configuration of the wireless device for ProSe operation such that an aggregated interruption to the WAN operation of the wireless device is below an allowed interruption value.
    Type: Application
    Filed: March 28, 2017
    Publication date: September 24, 2020
    Inventors: Santhan Thangarasa, Muhammad KAZMI
  • Patent number: 10785712
    Abstract: The wireless apparatus and network node disclosed herein facilitate the selection and use of one of multiple RATs for communications between the wireless apparatus and the network node. The selected RAT provides a lower energy consumption at the wireless apparatus for the communications with the network node. To that end, the wireless apparatus selects between at least two RATs, e.g., first and second RATs, where the first and second RATs are both coordinated by a network node in communication with the wireless apparatus, and where a system bandwidth of the second RAT and a system bandwidth of the first RAT are both comprised within a third system bandwidth of a third RAT coordinated by the network node.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: September 22, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Bengt Lindoff, Joakim Axmon, Muhammad Kazmi, Santhan Thangarasa
  • Publication number: 20200275289
    Abstract: A wireless device selects, from among at least first and second measurement modes in which measurements are respectively performed on cells belonging to first and second carriers, one or more measurement modes in which to perform a measurement. The one or more measurement modes are selected based on whether criteria is met for relaxed monitoring of a neighbor cell, and on whether the wireless device is configured to perform a positioning measurement. The wireless device performs the measurement in the one or more selected measurement modes.
    Type: Application
    Filed: December 18, 2019
    Publication date: August 27, 2020
    Inventors: Santhan Thangarasa, Johan Bergman, Muhammad Kazmi, Gerardo Agni Medina Acosta, Ritesh Shreevastav
  • Publication number: 20200245275
    Abstract: A device-to-device (D2D) user equipment (UE) apparatus identifies at least first and second synchronization reference (SyncRef) UEs each satisfying a predetermined selection/reselection criterion with respect to the D2D UE, determines a measurement period in which to perform one or more measurements on the identified at least first and second SyncRef UEs, and performs the one or more measurements on each of the identified at least first and second SyncRef UEs during the determined measurement period.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Inventors: Santhan Thangarasa, Muhammad Kazmi
  • Patent number: 10721053
    Abstract: Methods and apparatus disclosed herein enable a half-duplex, HD, wireless communication device, WCD (16), to remain synchronized to a supporting communication network (10), during uplink transmissions that use a large repetition factor, also referred to a using a large bundle size. For example, the WCD (16) uses a rule whereby the WCD (16) tunes back to the downlink carrier from time to time while making an uplink transmission that uses a large repetition factor. Re-tuning to the downlink carrier from time to time in this manner allows the WCD (16) to correct and maintain its time and frequency synchronization with respect to the network (10).
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: July 21, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Joakim Axmon, Johan Bergman, Yufei Blankenship, Santhan Thangarasa, Kazuyoshi Uesaka
  • Patent number: 10708831
    Abstract: A method in a wireless device (110A) is disclosed. The method comprises obtaining (804) information related to a signal transmission configuration for a target network node (115B), the information comprising a number of repetitions of a signal to be transmitted by the wireless device (110A) or to the wireless device (110A) by the target network node (115B) as part of performing at least one radio operation, wherein the number of repetitions is based on a coverage enhancement level of the wireless device (110A) with respect to at least one of a neighbor cell (125B) associated with the target network node (115B) and a serving cell (125A) associated with a serving network node (115A) of the wireless device (110A). The method comprises performing (812) the at least one radio operation according to the obtained information related to the signal transmission configuration for the target network node (115B).
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: July 7, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Iana Siomina, Muhammad Kazmi, Santhan Thangarasa, Kazuyoshi Uesaka
  • Publication number: 20200204318
    Abstract: Apparatuses and methods for band scanning in lean carrier operation are disclosed. In one embodiment, a method for a network node includes identifying at least one time period for transmitting a reference signal over a full cell bandwidth in lean earner operation, and transmitting a reference signal according to a bandwidth pattern. The bandwidth pattern is based at least in part on the identified at least one time period.
    Type: Application
    Filed: October 1, 2018
    Publication date: June 25, 2020
    Inventors: Santhan THANGARASA, Muhammad KAZMI, Torgny PALENIUS, Kazuyoshi UESAKA
  • Publication number: 20200196171
    Abstract: According to certain embodiments, a method for use in a wireless device comprise determining a coverage level with respect to a serving cell, selecting one of a plurality of configurations for sharing gaps between intra- and inter-frequency measurements, and performing one or more measurements according to the selected configuration for sharing gaps. The configuration for sharing gaps is selected based at least in part on the determined coverage level. For example, certain embodiments use the determined coverage level to select one of a plurality of tables, wherein each table comprises one or more schemes that indicate how to share gaps between intra- and inter-frequency measurements.
    Type: Application
    Filed: April 2, 2018
    Publication date: June 18, 2020
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Santhan THANGARASA, Muhammad KAZMI
  • Publication number: 20200178172
    Abstract: The disclosure relates to a method performed by a network node of a wireless communication network, and corresponding method in a UE. The method in the node comprises obtaining (312) information indicating a capability of a UE of applying a wake-up-signal, WUS. Applying the WUS implies that reception or non-reception of the WUS at the start of an on-duration of a discontinuous reception, DRX, period indicates to the UE to respectively monitor or refrain from monitoring a downlink control channel during the on-duration. The method also comprises obtaining (314) configuration data related to the UE, the configuration data comprising at least one of: a DRX cycle configuration; a type of service or application for which the UE is being used; and a UE coverage level; and determining (318) whether the UE is to apply the WUS based on the obtained configuration data.
    Type: Application
    Filed: July 6, 2018
    Publication date: June 4, 2020
    Inventors: Santhan THANGARASA, Muhammad KAZMI
  • Patent number: 10674527
    Abstract: Method performed by a first network node (111) for handling scheduling of wireless devices. The first network node (111) obtains information about a first type of time resource used by HD-FDD wireless devices (151). The first network node (111) also obtains information about a second type of time resource not used by the HD-FDD wireless devices (151) due to a transition at the HD-FDD wireless devices (151) between UL and DL. The first network node (111) schedules a first wireless device out of FD-FDD wireless devices (152) during the second type of time resource, based on the obtained information about the second type. The first network node (111) decides whether or not to schedule a second wireless device out of the FD-FDD wireless devices (152) during the first type of time resource, based on the obtained information about the first type, and further based on whether first conditions are met.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: June 2, 2020
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Muhammad Kazmi, Santhan Thangarasa, Iana Siomina