Patents by Inventor Pratik Kothari

Pratik Kothari 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: 10439787
    Abstract: A Long Term Evolution (LTE) access node to serve User Equipment (UEs) with a wireless Carrier Aggregation (CA) data communication service. A data processing system schedules CA Primary Component Carriers (PCCs), CA intra-band Secondary Component Carriers (SCCs) and CA inter-band SCCs for the UEs. A wireless transceiver wirelessly exchanges user data with the UEs based on the scheduling to serve the UEs with the CA PCCs, the CA intra-band SCCs, and the CA inter-band SCCs. The data processing system detects that a number of the UEs exceeds a UE threshold, and in response, identifies the UEs that use an LTE channel for their CA inter-band SCCs but not for their CA PCCs. The data processing system disables the LTE channel for the UEs that use the LTE channel for their CA inter-band SCCs but not for their CA PCCs.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: October 8, 2019
    Assignee: Sprint Communications Company L.P.
    Inventors: Chunmei Liu, Hemanth Balaji Pawar, Pratik Kothari, Krishna D. Sitaram
  • Patent number: 10440716
    Abstract: A method and system for controlling wireless communication over an air interface between a base station and a user equipment device (UE) served by the base station. In examples, the base station is configured to use a particular modulation and coding scheme (MCS) to transmit downlink control signals over the air interface to the UE without the base station beamforming the downlink control signals to the UE. Responsive to the base station determining that the UE is experiencing threshold poor RF conditions on the air interface, the base station reconfigures itself to beamform downlink control signals to the UE. And, given that the base station is reconfigured to beamform downlink control signals to the UE, the base station further reconfigures itself to use a higher-order MCS to transmit downlink control signals to the UE.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: October 8, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Hemanth B. Pawar, Krishna Sitaram, Chunmei Liu, Pratik Kothari
  • Patent number: 10433203
    Abstract: Systems, methods, and processing nodes for providing a quality of service (QoS) to wireless devices attached to a relay access node include determining that a first amount of a first traffic type between a donor access node and a first one or more wireless devices in communication with the donor access node via the relay access node exceeds a threshold amount, and adjusting a quality of service (QoS) parameter of a wireless backhaul link between the relay access node and the donor access node from a first default QoS parameter to a new QoS parameter.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: October 1, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Pratik Kothari, Hemanth Pawar, Krishna Sitaram, Chunmei Liu
  • Patent number: 10383101
    Abstract: Link adaptation for an uplink channel is dynamically performed based on changes in uplink resources in the wireless network, the changes based on frame configuration. If the ratio of uplink to downlink subframes in the new frame configuration is smaller, the throughput is increased by increasing a modulation and coding scheme of the uplink channel, and transmit power of wireless devices. If the ratio of uplink to downlink subframes is increased in the new frame configuration, the throughput is decreased, and the wireless device is instructed to transmit using reduced transmit power.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: August 13, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Hemanth Pawar, Krishna Sitaram, Chunmei Liu, Pratik Kothari
  • Patent number: 10368321
    Abstract: Systems, methods, and processing nodes for minimizing interference caused by high-powered wireless devices to other wireless devices in the network by determining an increase in a number of high-powered wireless devices attached to a serving access node causing a corresponding increase in a potential interference to standard-powered wireless devices attached to the serving access node. In response to determining this increase, the methods include activating a coordinated transmission mode for one or more standard-powered wireless devices.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: July 30, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Krishna Sitaram, Chunmei Liu, Hemanth Pawar, Pratik Kothari
  • Patent number: 10320519
    Abstract: Methods and systems for controlling service by a base station when the base station is serving both a first UE without carrier aggregation and a plurality of second UEs with carrier aggregation. As a basis for invoking carrier aggregation service for the first UE, the base station selects one of the second UEs to transition from being served by the base station with carrier aggregation to being served by the base station without carrier aggregation. The base station makes such a selection based at least in part on a modulation and coding scheme that the base station uses to serve the selected one of the second UEs. The base station transitions from serving the selected second UE with carrier aggregation to serving the selected second UE without carrier aggregation. And the base station transitions from serving the first UE without carrier aggregation to serving the first UE with carrier aggregation.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: June 11, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Pratik Kothari, Chunmei Liu, Hemanth B. Pawar, Krishna Sitaram
  • Patent number: 10298313
    Abstract: Exemplary embodiments described herein include systems, methods, and nodes for selecting a donor for a relay wireless device. Signal levels corresponding to signals received at a relay wireless device from a plurality of access points are determined. Signal information is received from the plurality of access points, wherein the signal information comprises a group identification for each access point. The signal information for the access points may then be compared to a donor criteria. And the access point corresponding to the greatest signal level that also comprises signal information that meets the donor criteria may be selected as the donor for the relay wireless device.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 21, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Hemanth Pawar, Krishna Sitaram, Pratik Kothari
  • Patent number: 10236965
    Abstract: According to exemplary embodiments described herein, communicating via a plurality of antennae includes transmitting different data streams from each of a first antenna and a second antenna in a first transmission mode, and transmitting identical data streams from a third antenna and one of the first and second antennae in a second transmission mode. The first and second antennae are horizontally stacked relative to each other and the third antenna is vertically stacked relative to both the first and second antennae.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: March 19, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Krishna Sitaram, Chunmei Liu, Hemanth Pawar, Pratik Kothari
  • Patent number: 10225724
    Abstract: Systems and methods are described for selecting a wireless device to share a set of resource blocks from an access node. A channel orthogonality of a plurality of parallel data streams received at the access node from wireless devices may be determined. From the wireless devices, a non-relay capable wireless device whose channel orthogonality meets a set threshold may be selected. From the plurality of wireless devices, a relay-capable wireless device whose channel orthogonality meets a set threshold may be selected. The selected non-relay capable and relay-capable wireless devices may be paired to share a same set of resource blocks. The selected non-relay capable and relay-capable wireless devices may be scheduled for resource transmission.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 5, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Hemanth Pawar, Chunmei Liu, Krishna Sitaram, Pratik Kothari
  • Patent number: 10212028
    Abstract: Disclosed is a method and system for controlling air interface communication in a wireless communication system that supports multiple TDD configurations. In a disclosed example, a base station's cell is initially configured to operate with a particular TDD configuration. The base station then detects a trigger to reduce uplink latency in the cell, such as by detecting a threshold number of devices being served with latency-sensitive communication such as voice-over-packet communication. And the base station responsively reconfigures the cell to operate with a different TDD configuration having lower uplink latency, where uplink latency of each TDD configuration is based average wait to uplink subframe of the TDD configuration.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: February 19, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Krishna Sitaram, Hemanth B. Pawar, Chunmei Liu, Pratik Kothari
  • Patent number: 10211899
    Abstract: Systems and methods are described for detecting interference at an access node. A rate at which packets are unsuccessful received at a wireless device may be monitored, wherein the wireless device is in communication with a cell of an access node. The access node may retransmit one or more unsuccessfully received packets to the wireless device. A retransmission metric for retransmission attempts to the wireless device from the access node may be monitored. And it may be determined that communication between the cell of the access node and the wireless device is experiencing interference from a neighboring cell when the monitored rate and monitored retransmission metric meet the interference criteria.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: February 19, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Pratik Kothari, Krishna Sitaram, Hemanth Pawar
  • Patent number: 10187835
    Abstract: Systems and methods are described for performing handover of a wireless device to a target Access Node (AN) sector. Beam-form capable sectors of one or more target ANs may be selected from a pool of candidate sectors. At least one of the selected sectors may be prioritized (e.g., over the other sectors) based on an open beam-form seat. Handover of the wireless device from a first AN to the prioritized sector may be performed.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: January 22, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Hemanth Pawar, Krishna Sitaram, Pratik Kothari
  • Patent number: 10187810
    Abstract: A UE is configured to function as a relay on behalf of a donor access node. The donor access node can dynamically adjust scheduling of resources to the relay UE based on a size of a buffer associated with the relay UE. The donor access node monitors a size of the buffer and, if the size exceeds a threshold, assigns a greater scheduling weight to the relay UE. Similarly, when the buffer size associated with the relay UE drops below a threshold, the scheduling weight may be lowered. The buffer may include any combination of a downlink buffer stored on the donor access node or an uplink buffer stored on the relay UE.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: January 22, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Krishna Sitaram, Hemanth Pawar, Pratik Kothari
  • Patent number: 10178594
    Abstract: A relay wireless device is subject to a handoff procedure based on a signal strength and other features of a plurality of neighbor access nodes that are within range of the relay wireless device, and based on their ability to provide services to end-user wireless devices via the relay wireless device. A first access node obtains a plurality of features of the neighbor access nodes to enable determination of an optimal donor access node to provide services to the end-user devices via the relay wireless device. The first access node may obtain the features directly from each neighbor access node or by communicating with an EMS server. The features of the neighbor access nodes include loading information for each node. The loading information may be matched to the requirements of the relay wireless device.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: January 8, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Krishna Sitaram, Hemanth Pawar, Pratik Kothari
  • Patent number: 10165483
    Abstract: Mitigating interference in distributed antenna systems (DAS) includes determining, at a processing node of the DAS, that a first wireless device attached to a first access node is within a coverage area of one or more antennae of the DAS, and transmitting, from the processing node to the first access node, a request to trigger a handover of the first wireless device from the first access node to the DAS. The first access node triggers the handover by instructing the first wireless device to perform a signal measurement.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: December 25, 2018
    Inventors: Chunmei Liu, Pratik Kothari, Hemanth Pawar, Krishna Sitaram
  • Patent number: 10148346
    Abstract: Exemplary embodiments described herein include systems, methods, and nodes for determining a frequency band for wireless backhaul. It may be determined that a utilization of a frequency band used for backhaul between a relay wireless device and an access node meets a criteria. An overhead may be calculated for a set of frequency bands available for use as backhaul between the relay wireless device and the access node, wherein the calculated overhead for a particular one of the set of frequency bands is based on at least one of a number of wireless devices that use the particular frequency band for carrier aggregation and a number of wireless devices that receive a beamformed signal over the particular frequency band. One of the set of frequency bands may be selected based on the calculated overhead. And the relay wireless device may be instructed to communicate wireless backhaul to the access node over the selected frequency.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: December 4, 2018
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Hemanth Pawar, Krishna Sitaram, Pratik Kothari
  • Patent number: 10123346
    Abstract: Backhaul data may be communicated between an access node and a relay wireless device, wherein the relay wireless device serves as backhaul for a plurality of end-user wireless devices and a set of the plurality of the end-user wireless devices comprise a quality of service metric that meets a quality of service criteria. Wireless resources may be scheduled for the relay wireless device using semi-persistent scheduling such that wireless resources are pre-allocated for the relay wireless device based on a periodicity. And data may be transmitted according to the semi-persistent scheduling from the access node to the relay wireless device based on the periodicity, wherein data for the set of end-user wireless devices that is received at the access node between transmissions for the semi-persistent scheduling is queued such that it is transmitted to the relay wireless device at a next transmission for the semi-persistent scheduling.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: November 6, 2018
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Hemanth Pawar, Krishna Sitaram, Pratik Kothari, Yu Zhou, Muhammad Ahsan Naim, Luca Zappaterra
  • Patent number: 10098138
    Abstract: Backhaul data may be communicated between an access node and a relay wireless device, wherein the relay wireless device serves as backhaul for a plurality of end-user wireless devices and a set of the plurality of the end-user wireless devices comprise a quality of service metric that meets a quality of service criteria. Wireless resources may be scheduled for the relay wireless device using pre-allocated scheduling such that wireless resources are pre-allocated for the relay wireless device. Data may be aggregated for the set of end-user wireless devices that is received at the access node between scheduled transmissions for the pre-allocated scheduling. And the aggregated data may be transmitted, according to the pre-allocated scheduling, from the access node to the relay wireless device at a next transmission for the pre-allocated scheduling.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: October 9, 2018
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Hemanth Pawar, Krishna Sitaram, Pratik Kothari
  • Patent number: 10091700
    Abstract: Embodiments described herein relate to performing pre-emptive handovers of the backhaul connection of a moving small access node or a relay node that is attached to a mode of transportation traveling along a known or predefined route. The handovers to specific donor access nodes are based at least on a direction of travel, rate (speed) of travel, and current location of the mode of transportation, as well as the presence and coverage areas of the donor access nodes along the known route.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 2, 2018
    Assignee: Sprint Spectrum L.P.
    Inventors: Chunmei Liu, Krishna Sitaram, Hemanth Pawar, Pratik Kothari
  • Patent number: 10091784
    Abstract: An Orthogonal Frequency Division Multiplexing (OFDM) communication network controls Device-to-Device (D2D) scheduling. The OFDM access point wirelessly exchanges wireless communications with a plurality of individual User Equipment (UEs) using scheduled UE resources in a shared resource range. The OFDM access point wirelessly receives a first D2D communication request for a first D2D UE and responsively schedules D2D resources for the first D2D communication request in the shared resource range. The OFDM access point detects D2D interference for one of the plurality of individual UEs and determines that the D2D interference exceeds a D2D interference threshold. The OFDM access point wirelessly receives a second D2D communication request for a second D2D UE and responsively schedules D2D resources for the second D2D communication request in a D2D dedicated resource sub-range.
    Type: Grant
    Filed: December 31, 2016
    Date of Patent: October 2, 2018
    Assignee: Sprint Communications Company L.P.
    Inventors: Chunmei Liu, Krishna D. Sitaram, Hemanth Balaji Pawar, Pratik Kothari