Patents by Inventor Siddhartha Mallik

Siddhartha Mallik 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: 20190320323
    Abstract: Wireless communications systems and methods related to reclaiming of resources in a shared frequency spectrum shared by multiple operators are provided. A first wireless communication device associated with a first operator of a plurality of operators identifies a transmission opportunity in a shared frequency spectrum shared by the plurality of operators, wherein the first operator has priority among the plurality of operators for accessing the shared frequency spectrum in the transmission opportunity. The first wireless communication device communicates with a second wireless communication device associated with the first operator, in the transmission opportunity without a prior reservation of the transmission opportunity.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Inventors: Juan Montojo, Taesang Yoo, Xiaoxia Zhang, Aleksandar Damnjanovic, Siddhartha Mallik
  • Publication number: 20190312671
    Abstract: Methods, systems, and devices for wireless communications are described. In accordance with the described techniques, communicating devices (e.g., an encoder and decoder) may apply an orthogonal cover code to a polar codeword to reduce cross-correlation between different codewords. For example, such techniques may reduce power consumption at a decoding device by providing for earlier decoding termination (e.g., as a result of the reduced cross-correlation). Techniques for generating the cover codes (e.g., on a per-aggregation level basis) and applying the cover codes (e.g., within a search space) are described. Additionally or alternatively, the described techniques may relate to seeding of reference signals used to support decoding of the codewords. Improved orthogonality between reference signal seeds may further suppress codeword recipient ambiguity.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 10, 2019
    Inventors: Jamie Menjay Lin, Siddhartha Mallik, Tamer Kadous
  • Publication number: 20190305834
    Abstract: Reference signal and transmitter (Tx)/receiver (Rx) precoding for user equipment (UE) multiplexing in new radio (NR) shared spectrum networks is discussed. In certain reference signals, a base station may schedule multiple UEs for transmission of uplink reference signals within an identified subframe. The base station may transmit a reference signal configuration message, wherein the reference signal configuration message includes a transmission sequence identifier identifying a multiplexing for antenna ports assigned for transmission of the uplink reference signals. The multiplexing may be one or both of frequency divisional multiplexing (FDM) and time division multiplexing (TDM) over the identified subframe. Additional reference signals, transmit precoders may be identified by the base station based on channel inversion calculations of the channel matrix determined based on uplink reference signals.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: Seyed Ali Akbar Fakoorian, Xiaoxia Zhang, Taesang Yoo, Siddhartha Mallik, Juan Montojo
  • Patent number: 10433179
    Abstract: Wireless communications systems and methods related to SDMA operations across multiple network operating entities are provided. A first wireless communication device transmits a communication indicating a reservation for one or more spatial layers in a transmission opportunity (TXOP) of a shared spectrum. The shared spectrum is shared by a first network operating entity and a second network operating entity. The first wireless communication device is associated with the first network operating entity. The first wireless communication device communicates, with a second wireless communication device, data over the one or more spatial layers during the TXOP. The second wireless communication device is associated with the first network operating entity.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 1, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Taesang Yoo, Siddhartha Mallik, Tamer Kadous, Vikas Jain, Ahmed Sadek
  • Patent number: 10425826
    Abstract: Wireless communications systems and methods related to autonomous uplink transmission and autonomous downlink transmission in a shared spectrum are provided. A first wireless communication device identifies a transmission opportunity (TXOP) in a shared spectrum shared by a plurality of network operating entities. The first wireless communication device is associated with a first network operating entity of the plurality of network operating entities. The first wireless communication device a first frequency band of the shared spectrum designated for autonomous communication by the first network operating entity during the TXOP. The first wireless communication device communicates, with a second wireless communication device associated with the first network operating entity in the first frequency band, autonomous data during the TXOP.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: September 24, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Seyed Ali Akbar Fakoorian, Xiaoxia Zhang, Taesang Yoo, Aleksandar Damnjanovic, Juan Montojo, Siddhartha Mallik
  • Publication number: 20190288761
    Abstract: Channel state information (CSI) request procedures are disclosed for use in long term evolution (LTE)/LTE-Advanced (LTE-A) networks with unlicensed spectrum. Instead of relying on periodic reference signals which may not be transmitted because of failed clear channel assessment (CCA) operations, an aperiodic reference signal is defined that provides an on-demand reference signal and CSI request for user equipment (UE), The serving base station transmits an identifier, which signals that the aperiodic reference signal will be transmitted, either in the same subframe or a future subframe, and then transmits the aperiodic reference signal in the designated subframe. UEs served by the base station will receive the identifier, identify a CSI request, either implicitly through the identifier signal received from the base station or explicitly through a UE-specific CSI request, and then generate a CSI report based on the aperiodic reference signal for transmission back to the serving base station.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: Siddhartha Mallik, Tao Luo
  • Patent number: 10412704
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a configuration for enhanced paging to a UE being served by a cell over a shared frequency band. The enhanced paging may include multiple paging intervals for each paging cycle. The UE may enable reception for a paging interval and determine whether the UE receives a downlink transmission. The UE may lengthen a paging interval or enable reception during a second paging interval based in part on determining whether the UE receives a downlink transmission. In some examples, the UE may receive a paging queue status indication indicating that paging information will be transmitted during a paging interval or a later interval, or indicating that no paging information is present at a serving cell.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: September 10, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Sun, Juan Montojo, Taesang Yoo, Siddhartha Mallik, Andrei Dragos Radulescu, Chirag Sureshbhai Patel, Chengjin Zhang
  • Patent number: 10397796
    Abstract: Techniques are described for wireless communication. One method of wireless communication includes receiving, at a first user equipment (UE), a first communication over a shared radio frequency spectrum band from a first base station. The first communication includes a pre-grant communication associated with a downlink transmission or a grant of uplink resources associated with an uplink transmission. The method further includes determining, based at least in part on receiving the first communication, whether a channel reservation signal is detected over the shared radio frequency spectrum band; and transmitting a second communication over the shared radio frequency spectrum band, to the first base station, based at least in part on the determining. The second communication includes an approval of the downlink transmission or the uplink transmission.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: August 27, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Sun, Tao Luo, Taesang Yoo, Xiaoxia Zhang, Siddhartha Mallik
  • Patent number: 10397754
    Abstract: A device may support communication without a radio link control (RLC) layer, which may include receiving a packet data convergence protocol (PDCP) service data units (SDUs) for multiple radio bearers at a PDCP layer. The multiple radio bearers may have different reliability or delay targets, and a reordering procedure at the PDCP layer may be conducted on the different radio bearers. The reordering procedure may be a same reordering procedure for each of the radio bearers, with one or more parameters that may be adjusted based on one or both of the reliability target or delay target of the radio bearer.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: August 27, 2019
    Assignee: QUALCOMM Incorporation
    Inventors: Madhavan Srinivasan Vajapeyam, Jun Wang, Siddhartha Mallik, Taesang Yoo, Abhijit Khobare, Ajay Gupta, Vikas Jain, Yongbin Wei
  • Patent number: 10389479
    Abstract: Certain aspects of the present disclosure provide for signaling to expanded capability UEs that may limit the interruption of legacy UEs. According to certain aspects, a base station (e.g., an eNB) may generate and transmit one or more signals containing information that is recognizable by at least one expanded capability UE and identified as invalid by at least one legacy UE. An expanded capability UE may receive such signaling and identifying supplemental information in the signaling, while a legacy UE may regard the signaling as invalid.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: August 20, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Taesang Yoo, Siddhartha Mallik, Tao Luo
  • Patent number: 10356626
    Abstract: Wireless communications systems and methods related to reclaiming of resources in a shared frequency spectrum shared by multiple operators are provided. A first wireless communication device associated with a first operator of a plurality of operators identifies a transmission opportunity in a shared frequency spectrum shared by the plurality of operators, wherein the first operator has priority among the plurality of operators for accessing the shared frequency spectrum in the transmission opportunity. The first wireless communication device communicates with a second wireless communication device associated with the first operator, in the transmission opportunity without a prior reservation of the transmission opportunity.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: July 16, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Juan Montojo, Taesang Yoo, Xiaoxia Zhang, Aleksandar Damnjanovic, Siddhartha Mallik
  • Patent number: 10341884
    Abstract: Channel clearance using a shared radio frequency spectrum band may be performed for both a base station and a user equipment (UE). A base station may perform a listen before talk (LBT) procedure and verify one or more channels in a shared radio frequency spectrum band are available for transmissions and, if the LBT procedure is successful, transmit a pre-grant transmission to one or more UEs. The UEs may perform an LBT procedure for channel(s) indicated in the pre-grant transmission. If the UE LBT procedure passes, the UE may transmit a channel clearance signal, and may transmit a feedback communication responsive to the pre-grant transmission. The feedback communication may indicate, for example, the pre-grant transmission was received and which of the one or more channels are available based on the LBT procedure. The base station may receive the feedback communication and initiate transmissions to the UE.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: July 2, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Sun, Tao Luo, Xiaoxia Zhang, Taesang Yoo, Siddhartha Mallik
  • Publication number: 20190200385
    Abstract: A method, apparatus, and computer-readable medium at a transmitting network device or a target network device in a listen-before-talk (LBT) session that employ a spatial LBT procedure is disclosed. The spatial LBT procedure takes into account multiple-input multiple-output (MIMO) configuration information in measuring an effective interference. Accordingly, the spatial LBT procedure enables the transmitting network device or the target network device to more accurately measure an interference and make a more accurate decision on whether a channel is clear, and thus improves the system-wide performance. Also, the spatial LBT procedure allows the transmitting network device or the target/receiving network device to adaptively adjust the LBT power detection threshold when the MIMO configuration is not available.
    Type: Application
    Filed: August 24, 2018
    Publication date: June 27, 2019
    Inventors: Yisheng XUE, Qingsi WANG, Siddhartha MALLIK, Weiliang ZENG, Ahmed SADEK
  • Publication number: 20190199786
    Abstract: Techniques for performing peer discovery in a wireless network are described. A device may perform peer discovery to detect and identify other devices of interest. In an aspect, the device may perform peer discovery based on a hybrid mode that includes autonomous peer discovery and network-assisted peer discovery. In another aspect, the device may perform peer discovery based on a push mode and a pull mode. For the push mode, the device may occasionally transmit and/or receive a peer detection signal. For the pull mode, the device may transmit and/or receive a peer discovery request when triggered. In yet another aspect, the device may perform event-triggered peer discovery (e.g., for the pull mode). In yet another aspect, the device may perform peer discovery using both a downlink spectrum and an uplink spectrum. In yet another aspect, the device may transmit a peer detection signal in a manner to improve detection and/or increase payload.
    Type: Application
    Filed: March 1, 2019
    Publication date: June 27, 2019
    Inventors: Siddhartha MALLIK, Ravi PALANKI, Durga Prasad MALLADI, Naga BHUSHAN
  • Patent number: 10333668
    Abstract: Methods, systems, and devices are described for a system that supports wireless communication with a first set of devices using a first OFDM symbol duration associated with a first tone spacing (i.e., a first physical layer (PHY) configuration) and second set of devices using a PHY configuration associated with a second tone spacing. A base station may transmit a set of discovery reference signals (DRS) in a narrowband region of a primary channel of a carrier. The DRS may have the first PHY configuration and a secondary channel of the carrier may support communications using the second PHY configuration. The base station may transmit a first system information (SI) message for one set of devices using the first PHY configuration, and it may transmit a second SI message for another set of devices using the second PHY configuration.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: June 25, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Taesang Yoo, Jing Sun, Siddhartha Mallik, Tao Luo, Peter Gaal, Xiaoxia Zhang, Jun Wang
  • Patent number: 10333595
    Abstract: Reference signal and transmitter (Tx)/receiver (Rx) precoding for user equipment (UE) multiplexing in new radio (NR) shared spectrum networks is discussed. In certain reference signals, a base station may schedule multiple UEs for transmission of uplink reference signals within an identified subframe. The base station may transmit a reference signal configuration message, wherein the reference signal configuration message includes a transmission sequence identifier identifying a multiplexing for antenna ports assigned for transmission of the uplink reference signals. The multiplexing may be one or both of frequency divisional multiplexing (FDM) and time division multiplexing (TDM) over the identified subframe. Additional reference signals, transmit precoders may be identified by the base station based on channel inversion calculations of the channel matrix determined based on uplink reference signals.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: June 25, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Seyed Ali Akbar Fakoorian, Xiaoxia Zhang, Taesang Yoo, Siddhartha Mallik, Juan Montojo
  • Publication number: 20190174532
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may employ a multiplexing configuration based on latency and efficiency considerations. The base station may transmit a resource grant, a signal indicating the length of a downlink (DL) transmission time interval (TTI), and a signal indicating the length of a subsequent uplink (UL) TTI to one or more user equipment (UEs). The base station may dynamically select a new multiplexing configuration by, for example, setting the length of an UL TTI to zero or assigning multiple UEs resources in the same DL TTI. Latency may also be reduced by employing block feedback, such as block hybrid automatic repeat request (HARQ) feedback. A UE may determine and transmit HARQ feedback for each transport block (TB) of a set of TBs, which may be based on a time duration of a downlink TTI.
    Type: Application
    Filed: January 11, 2019
    Publication date: June 6, 2019
    Inventors: Jelena Damnjanovic, Taesang Yoo, Siddhartha Mallik, Aleksandar Damnjanovic, Arumugam Chendamarai Kannan, Madhavan Srinivasan Vajapeyam, Durga Prasad Malladi, Yongbin Wei, Tao Luo
  • Patent number: 10312987
    Abstract: Channel state information (CSI) request procedures are disclosed for use in long term evolution (LTE)/LTE-Advanced (LTE-A) networks with unlicensed spectrum. Instead of relying on periodic reference signals which may not be transmitted because of failed clear channel assessment (CCA) operations, an aperiodic reference signal is defined that provides an on-demand reference signal and CSI request for user equipment (UE). The serving base station transmits an identifier, which signals that the aperiodic reference signal will be transmitted, either in the same subframe or a future subframe, and then transmits the aperiodic reference signal in the designated subframe. UEs served by the base station will receive the identifier, identify a CSI request, either implicitly through the identifier signal received from the base station or explicitly through a UE-specific CSI request, and then generate a CSI report based on the aperiodic reference signal for transmission back to the serving base station.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: June 4, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Siddhartha Mallik, Tao Luo
  • Patent number: 10285117
    Abstract: Techniques are described for wireless communication. One method for wireless communication at a base station includes contending for access to a shared channel of a shared radio frequency spectrum band, and multiplexing first component carrier (CC) communication windows and second CC communication windows in the shared channel. A duration of orthogonal frequency domain multiplexed (OFDM) symbols of the first CC communication windows may be different from a duration of OFDM symbols of the second CC communication windows, and the multiplexing may occur on the shared channel upon winning contention for access to the shared channel. One method for wireless communication at a user equipment (UE) includes monitoring a shared channel of a shared radio frequency spectrum band for a first CC Listen Before Talk (LBT) frame, and receiving, in a second CC preamble, an indication of the first CC LBT frame.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: May 7, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Taesang Yoo, Hao Xu, Durga Prasad Malladi, Yongbin Wei, Siddhartha Mallik, Jing Sun, Madhavan Srinivasan Vajapeyam, Jun Wang, Tao Luo, Xiaoxia Zhang, Wanshi Chen, Aleksandar Damnjanovic
  • Publication number: 20190124518
    Abstract: Wireless communications systems and methods related to reservation signal transmission and detection for spectrum sharing are provided. A first wireless communication device communicates, with a second wireless communication device, a reservation request (RRQ) signal to reserve a transmission opportunity (TXOP) in a shared spectrum, wherein the shared spectrum is shared by a plurality of network operating entities, and wherein the first wireless communication device and the second wireless communication device are associated with a first network operating entity of the plurality of network operating entities. The first wireless communication device transmits a reservation response (RRS) signal indicating an interference tolerance level of the first wireless communication device.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Inventors: Xiaoxia Zhang, Siddhartha Mallik, Taesang Yoo, Juan Montojo, Aleksandar Damnjanovic, Junyi Li