Patents by Inventor Arunabha Ghosh

Arunabha Ghosh 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: 11240843
    Abstract: The disclosed subject matter is directed towards a clear channel assessment procedure based on a common preamble, such as for use with 3GPP and IEEE 802.11 technologies, or any other radio technology, including for use in the 6 GHz band. Detection of the common preamble is based on detecting known sequences in signal part, which can be detected without decoding the preamble's payload (channel) part to determine an ongoing transmission's duration. If an ongoing transmission is detected, subsequent energy detection monitoring is performed to determine when transmission ends, which can use a different energy detection threshold from what is used in the initial clear channel assessment's energy detection. The technology facilitates the usage of different sampling rates by different radio technologies that work concurrently in the same unlicensed band, by correlating a received preamble with a stored preamble that accounts for deterministic distortions arising from the different sampling rates.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: February 1, 2022
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Ralf Bendlin, Arunabha Ghosh, Aditya Chopra
  • Patent number: 11239894
    Abstract: Facilitating generic reciprocity-based channel state information acquisition frameworks for advanced networks (e.g., 4G, 5G, and beyond) is provided herein. Operations of a system can comprise determining first uplink channel state information for a first mobile device based on first downlink channel state information received from the first mobile device. The first mobile device can be from a group of mobile devices in a wireless communications network. The operations can also comprise training a model on a difference between the first downlink channel state information and the first uplink channel state information to a defined level of confidence. Further, the operations can comprise employing the model to determine, without receipt of second downlink channel state information from a second mobile device of the group of mobile devices, second uplink channel state information for the second mobile device.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 1, 2022
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Xiaoyi Wang, Arunabha Ghosh, SaiRamesh Nammi, Salam Akoum
  • Publication number: 20220029767
    Abstract: Various embodiments disclosed herein provide for efficient configuration of demodulation reference signals in beamformed wireless communications systems. In an embodiment, the transmitter can signal the location of demodulation reference signals (DMRS) by including an indicator bit in downlink control information indicating which DMRS scheme is used in the transmission. A first DMRS scheme can let the user equipment (UE) device know that the DMRS position for the PDSCH carrying the RMSI is as signaled on the master information block (MIB)—referred to as PDSCH Mapping Type A. A second DMRS scheme can let the UE device know that the DMRS position for the PDSCH carrying the RMSI is the first orthogonal frequency division multiplexing (OFDM) symbol of said PDSCH allocation—referred to as PDSCH mapping type B).
    Type: Application
    Filed: October 11, 2021
    Publication date: January 27, 2022
    Inventors: Ralf Bendlin, Thomas Novlan, Xiaoyi Wang, Arunabha Ghosh
  • Publication number: 20220029741
    Abstract: Various embodiments provide for encoding and decoding control link information with polar codes where the frozen bits of the information block can be set to the device identification number instead of being set to null. The frozen bits can be identified based on the type of polar code being used, and while the non-frozen bits can be coded with the channel state information, the frozen bits can be coded with the device ID. In an example where there are more frozen bits than bits in the device ID, the most reliable of the frozen bits can be coded with the device ID. In another example, the frozen bits can be set to the CRC bits, which can then be masked by the device ID.
    Type: Application
    Filed: October 12, 2021
    Publication date: January 27, 2022
    Inventors: SaiRamesh Nammi, Xiaoyi Wang, Arunabha Ghosh
  • Patent number: 11228381
    Abstract: An example method may include a processing system of a channel sounding receiver having a processor receiving from a base station, at a location, a channel sounding waveform via a plurality of carriers, sampling the channel sounding waveform via the plurality of carriers to generate a plurality of per-carrier time domain sample sets, and processing the plurality of per-carrier time domain sample sets via a plurality of discrete Fourier transform modules to provide a plurality of per-carrier frequency domain sample sets. The method may further include the processing system aligning the plurality of per-carrier frequency domain sample sets in gain and phase to provide a combined frequency domain sample set and measuring a channel property at the location based upon the combined frequency domain sample set.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: January 18, 2022
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Aditya Chopra, Saeed Ghassemzadeh, Arunabha Ghosh, Ralf Bendlin, Salam Akoum, SaiRamesh Nammi, Thomas Novlan, Xiaoyi Wang
  • Publication number: 20220014334
    Abstract: Controlling and reducing overhead in control channels in 5G or other next generation communication systems is provided herein. In connection with a data transmission between a device and a network node device, an overhead management component (OMC) can analyze one or more factors associated with the device, including speed or Doppler metric(s) of the device, type of service associated with the device, historical HARQ statistics for the device, configured threshold value for CSI estimation, device capability regarding redundancy version support, or other factor(s). Based on analysis results, OMC can determine whether to utilize a single redundancy version state or a multiple redundancy versions state. If the single redundancy version state is selected, OMC can generate control information that does not include redundancy version information, the control information being communicated via a control channel. OMC can communicate RRC signal to the device to indicate the determined redundancy version state.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: SaiRamesh Nammi, Ralf Bendlin, Arunabha Ghosh
  • Publication number: 20220007442
    Abstract: Establishment of integrated links comprising integrated wireless backhaul communications links and access communications links is facilitated by transmitting multiplexed sync signals to enable synchronization between the relay transmission point devices, and using a random access channel procedure to complete the establishment. The integrated wireless backhaul communications links and access communications links can be maintained by measuring channel characteristics of the backhaul communications links using a measurement reference signal.
    Type: Application
    Filed: September 20, 2021
    Publication date: January 6, 2022
    Inventors: Thomas David Novlan, Milap Majmundar, Arunabha Ghosh
  • Publication number: 20220006506
    Abstract: Various embodiments disclosed herein provide for a beam recovery when there has been a partial control channel failure. Transient obstructions, and other interference effects can cause the failure of a beam pair link which can comprise a transmit beam and a receive beam associated with respective antennas on a transmitter and receiver. A group of control channels (downlink control channels) (configured as a control resource set “CORESET”) on a group of beam pair links can be associated with a group of uplink control resources (Physical Uplink Control Channel resources). When a subset of the CORESET group fails, the user equipment (UE) device can find another PUCCH that is associated with a working CORESET to send an indication to the network about the failure. When the network receives the indication, the network can switch the failed CORESET to a new beam pair link.
    Type: Application
    Filed: September 16, 2021
    Publication date: January 6, 2022
    Inventors: Xiaoyi Wang, Arunabha Ghosh, Salam Akoum
  • Patent number: 11218245
    Abstract: The described technology is generally directed towards reporting channel quality information from a wireless user equipment to the network, in a channel state information report that includes channel quality information based on a block error rate threshold value that corresponds to an ultra-reliable low latency communication when the user equipment is in the ultra-reliable low latency communication mode. The channel quality information corresponding to the ultra-reliable low latency communication mode block error rate threshold and the channel quality information corresponding to the enhanced mobile broadband mode block error rate threshold can be included in the same report. Alternatively, the user equipment is instructed to report either the channel quality information for-reliable low latency communication or for enhanced mobile broadband in the channel state information report.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: January 4, 2022
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Publication number: 20210410123
    Abstract: A base station device can transmit data via multiple data channels to a single user equipment device. Each of the multiple data channels can be configured and scheduled via respective downlink control channels to the user equipment device. In an embodiment, the first data channel can be mapped to multiple layers, with a modulation and coding scheme (MCS) assigned based on the average channel quality indicator (CQI) of the layers. One or more of the layers can have a higher CQI however, capable of supporting an additional transmission. The base station device can then facilitate establishing a second data channel to the layer with the higher CQI. The MCS assigned to the second data traffic channel can be based on the CQI of the layer, or based on a difference between the average CQI of the layers and the CQI of the layer.
    Type: Application
    Filed: August 27, 2021
    Publication date: December 30, 2021
    Inventors: SaiRamesh Nammi, Salam Akoum, Arunabha Ghosh
  • Patent number: 11212022
    Abstract: The described technology is generally directed towards sharing a radio by multiple subscriber identities at a device. A time division multiplexing pattern at the device radio gives primary radio use to a first subscriber identity, while also providing time windows for radio use to a second subscriber identity. In response to a communication by the second subscriber identity, the time division multiplexing pattern can be changed to give the primary radio use to the second subscriber identity. Also, a radio resource control protocol can designate appropriate states for the different subscriber identities, designating the subscriber identity with primary radio use as connected, while the other subscriber identity is designated as inactive or idle.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: December 28, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Milap Majmundar, Ralf Bendlin, Thomas Novlan, Xiaoyi Wang, Arunabha Ghosh
  • Patent number: 11212858
    Abstract: The same or similar physical signals can be used for both user equipment (UE) and an integrate access backhaul (IAB) node. Different configurations of the resources and/or transmission periods of the signals can be used for initial access for access UEs and IAB nodes. In addition, to support topology formation, mobility/multi-connectivity procedures, and backhaul link management, periodic measurements and reports can be configured by a parent IAB node to a child IAB node UE function. This can comprise radio resource management (RRM), radio link monitoring (RLM), and beam management (L1-BM) measurements and reports.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: December 28, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Thomas Novlan, Arunabha Ghosh, Salam Akoum, Xiaoyi Wang
  • Patent number: 11206111
    Abstract: Failed transport blocks can be retransmitted when the number of layers is different compared to the number of layers for re-transmission. Mapping tables can be used for retransmitting the failed packets when a user equipment reported rank is different from the transmitted rank. In addition, an indication can be sent to the user equipment to indicate the failed transport blocks when the network decides to use a different codeword for transmitting a failed packet.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: December 21, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 11201702
    Abstract: Facilitating hybrid automatic repeat request reliability improvement for advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a system can comprise obtaining information related to a capability of a user equipment device and configuring the user equipment device with respect to control channel resources and a number of repetitions per slot based on the capability of the user equipment device. The operations can also comprise indicating the control channel resources and the number of repetitions per slot to the user equipment device via a control channel. Further, the operations can comprise detecting an acknowledgement, from the user equipment device, via an uplink control channel that comprises the control channel resources.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 14, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: SaiRamesh Nammi, Milap Majmundar, Arunabha Ghosh
  • Patent number: 11201712
    Abstract: A system facilitating incremental downlink control information (DCI) design to support DCI scheduling in a wireless communication system is provided. In one embodiment, the an apparatus comprises: a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations. The operations comprise: receiving first downlink control information associated with a first search space of a downlink control channel, wherein the first search space is of a first size; and receiving second downlink control information associated with a second search space of the downlink control channel, wherein the second search space is of a second size that is less than the first size, and wherein the second downlink control information comprises incremental downlink control information that is distinct from the first downlink control information.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: December 14, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Xiaoyi Wang, Arunabha Ghosh, Salam Akoum, Ralf Bendlin, Sairamesh Nammi
  • Patent number: 11196461
    Abstract: Various embodiments disclosed herein provide for a codeblock segmentation configuration system. A base station can configure the segmentation rate or segment size, which can control the number of codeblock segments a transport block is segmented into, based on the transmission reliability and predicted interference to a mobile device. An increased number of segments can improve throughput and efficiency when interference is low and signal to noise ratios are high, but can increase latency when interference is high and signal to noise is low. The base station can determine or predict transmission reliability based on the speed of mobile devices, the location and/or distance to the mobile device, as well as the long term signal to noise ratios.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: December 7, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 11197246
    Abstract: Various embodiments disclosed herein provide for power control system in a multi-hop integrated access and backhaul network. In a multi-hop integrated access and backhaul network a donor node can communicate with user equipment devices and relay nodes that have varying power levels, and to avoid receiving uplink transmissions with varying power levels which can impact automatic gain control systems and lower overall throughput, the power control system disclosed herein can manage the power levels of the relay node in order to reduce the difference in power levels. In one embodiment, the power control system can schedule relay node devices to transmit uplink transmissions alongside UE devices that have a high signal strength. In another embodiment, the power control system can schedule relay nodes and UE devices to separate symbols within a time slot.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: December 7, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Aditya Chopra, Arunabha Ghosh, Thomas Novlan, Andrew Thornburg, Xiaoyi Wang, Ralf Bendlin
  • Patent number: 11197314
    Abstract: The described technology is generally directed towards wireless communications systems in which multiple control channel resource sets (CORESETs) are configured into a CORESET group. The CORESET group may be associated with a usage scenario/quality of service requirement, and used by user equipment to decode downlink control information corresponding to that usage scenario. For example, one CORESET group can be used for URLLC traffic, another for eMBB type traffic and another for mMTC traffic. Different CORESET groups may be used to provide different aggregation level sets, different DMRS pattern configurations, different search spaces, different transmission protocols/schemes, different beam management and recovery procedures, different radio link monitoring and radio link failure procedures, and so on. Different CORESET groups may be associated with different transmission points.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: December 7, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Salam Akoum, Ralf Bendlin, Xiaoyi Wang, Arunabha Ghosh
  • Patent number: 11197178
    Abstract: Enhanced beam management for a wireless communication system is provided. In one example, a method comprises: determining, by a device comprising a processor, first beam information for a selected first beam of beams associated with a base station device, wherein the selected first beam is for downlink transmission; determining, by the device, second beam information for a selected second beam of the beams associated with the base station device, wherein the selected second beam is an alternative to the selected first beam for transmission of downlink data to the device, and the determining the second beam information is performed during a random access channel procedure; and transmitting, by the device, to a network device, the first beam information and the second beam information.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: December 7, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Salam Akoum, Arunabha Ghosh, Xiaoyi Wang
  • Patent number: 11196532
    Abstract: The described technology is generally directed towards using a frequency-separated band as a supplementary uplink band for a new radio downlink band that cannot operate as a time division duplex band and otherwise has no paired uplink band. The paired bands are separated in frequency, yet operate in the time division duplex mode. The supplementary uplink for New Radio facilitates coexistence with LTE in the frequency division duplex spectrum.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: December 7, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Thomas Novlan, Ralf Bendlin, Arunabha Ghosh