Patents by Inventor Andrei Dragos Radulescu

Andrei Dragos Radulescu 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: 20230027908
    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for determining a time to stop monitoring a wireless channel for paging information. In some examples, a user equipment (UE) may identify a plurality of paging occasions associated with a wireless channel (e.g., of an unlicensed radio frequency spectrum band) and monitor the wireless channel for paging information from a base station during a first paging occasion of the plurality of paging occasions. The UE may determine a channel occupancy status of the base station with respect to the wireless channel and may determine a time to stop monitoring the wireless channel for paging information. The UE may ignore a remainder of the plurality of paging occasions based on the determined time to stop monitoring the wireless channel.
    Type: Application
    Filed: October 4, 2022
    Publication date: January 26, 2023
    Inventors: Ozcan Ozturk, Xiaoxia Zhang, Andrei Dragos Radulescu, Jing Sun
  • Publication number: 20230008727
    Abstract: Methods, systems, and devices for wireless communications are described. A first device may cooperate with a second device to form a virtual device configured to communicate with a radio access network. The virtual device may appear as a single device from the perspective of the radio access network. Subsequently, a third device may be identified for replacing the second device within the virtual device. Based on the third device being identified, procedures for handing over communications from the second device to the third device may be executed. The procedures may include a beam management procedure, a random-access procedure, a mobility management procedure, or any combination thereof.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 12, 2023
    Inventors: Aleksandar Damnjanovic, Andrei Dragos Radulescu, Mostafa Khoshnevisan, Yan Zhou, Tao Luo, Xiaoxia Zhang, Jelena Damnjanovic, Rajat Prakash, Juan Montojo
  • Patent number: 11553523
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a bandwidth part (BWP) to switch to after identifying consistent uplink listen-before-talk (LBT) failures on a first BWP based on parameters indicated by a base station. For example, the base station may transmit a switching parameter to the UE that the UE then uses to switch to a second BWP based on identifying the consistent uplink LBT failures on the first BWP. Subsequently, after selecting the second BWP, the UE may attempt to use the second BWP for uplink transmissions (e.g., after performing a random access procedure). Additionally, the UE may indicate the consistent uplink LBT failures to a base station associated with the failed BWP based on a type of cell that is using that failed BWP.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: January 10, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Xiaoxia Zhang, Jing Sun, Andrei Dragos Radulescu
  • Patent number: 11553518
    Abstract: In an aspect, the present disclosure includes a method, apparatus, and computer readable medium for wireless communications for receiving, from a network entity, a configured grant associated with a listen-before-talk (LBT) procedure; determining a transmission priority on the configured grant associated with the LBT procedure; and determining a logical channel based on the transmission priority on the configured grant, wherein determining the logical channel further comprises determining that a scheduled transmission includes one or more signaling data transmissions on the configured grant, the one or more signaling data transmissions corresponding to at least one of a signaling radio bearer 0 (SRB0), SRB1, and SRB3; adjusting a priority level for the one or more signaling data transmissions to a highest priority level corresponding to a higher channel access priority class; and transmitting, to the network entity, on the configured logical channel of the configured grant after successfully performing the LB
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: January 10, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Jing Sun, Xiaoxia Zhang, Andrei Dragos Radulescu
  • Patent number: 11516770
    Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication. A user equipment (UE) may acquire a triggering synchronization signal block (SSB), which enables the UE to monitor for a floating Type-2 physical downlink control channel (PDCCH) and to determine a subset of paging occasions (POs) to monitor. Or, the UE may monitor for a fixed Type-2 PDCCH, where the UE does not require a triggering signal to monitors POs. In another aspect, the UE may monitor for a paging transmission during a monitoring period. The UE may determine the monitoring period based on received signaling. The UE may receive the signaling, during the monitoring period, indicating that the monitoring period is to be ended before a scheduled end of the monitoring period. In this way, the UE may support a continuity requirement associated with downlink reference signaling (DRS) and may support reception of paging in a shared channel.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: November 29, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Dragos Radulescu, Jing Sun, Xiaoxia Zhang, Ozcan Ozturk, Peter Gaal, Aleksandar Damnjanovic
  • Patent number: 11503559
    Abstract: Cell acquisition is disclosed in frequency diversity configured for frame based equipment (FBE) access, such as using opportunistic frequency switching. A user equipment (UE) begins cell acquisition by synchronizing to an available communication channel of an available cell in response to detection of a synchronization signal block (SSB) associated with a network on which the UE communicates. The UE receives system information associated with the available cell from a serving base station, wherein the system information includes identification of at least: a link indicator identifying linked communication channels available for opportunistic switching, sensing occasion offsets for each of the linked channels, and access information associated with each of the linked channels. The UE measures a channel quality for each available channel. The base station transmits this system information on each of the linked channels and then monitors the allocated random access resources for signals from the UEs.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: November 15, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Xiaoxia Zhang, Yongbin Wei, Srinivas Yerramalli, Tamer Kadous, Andrei Dragos Radulescu
  • Publication number: 20220338210
    Abstract: Certain aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for prioritized signaling via a functional application programming interface (FAPI). A method for conveying uplink (UL) payload may include receiving, at a physical (PHY) layer, a UL payload from one or more user equipments (UEs) and delivering different segments associated with the UL payload, to a medium access control (MAC) layer, in different messages via a functional application platform interface (FAPI). According to certain aspects, the different segments may carry UL payload with different priorities, and segments with higher priority UL payload may be delivered, to the MAC layer, prior to segments with lower priority UL payload.
    Type: Application
    Filed: April 13, 2022
    Publication date: October 20, 2022
    Inventors: Yaniv ELGARISI, Andrei Dragos RADULESCU, Lior UZIEL
  • Patent number: 11470606
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a plurality of semi-persistent scheduling (SPS) configurations corresponding to a plurality of SPS occasions for reception of a physical downlink shared channel (PDSCH) in a slot; decode a first SPS occasion, of the plurality of SPS occasions, to attempt to receive the PDSCH in the slot; and selectively decode a second SPS occasion, of the plurality of SPS occasions, to attempt to receive the PDSCH in the slot. Numerous other aspects are provided.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: October 11, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Aleksandar Damnjanovic, Seyed Ali Akbar Fakoorian, Andrei Dragos Radulescu
  • Patent number: 11463985
    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for determining a time to stop monitoring a wireless channel for paging information. In some examples, a user equipment (UE) may identify a plurality of paging occasions associated with a wireless channel (e.g., of an unlicensed radio frequency spectrum band) and monitor the wireless channel for paging information from a base station during a first paging occasion of the plurality of paging occasions. The UE may determine a channel occupancy status of the base station with respect to the wireless channel and may determine a time to stop monitoring the wireless channel for paging information. The UE may ignore a remainder of the plurality of paging occasions based on the determined time to stop monitoring the wireless channel.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: October 4, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Xiaoxia Zhang, Andrei Dragos Radulescu, Jing Sun
  • Patent number: 11445552
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain a signal received over a wireless channel, the signal configuring one or more random access parameters for the wireless channel. The UE may obtain a downlink control signal over the wireless channel, wherein the downlink control signal comprises an indication of a trigger and a location of one or more random access occasions for the UE. The UE may output, based at least in part on the downlink control signal, a random access signal for transmission on the wireless channel during at least one of the one or more random access occasions and according to the one or more random access parameters and the location. The UE may establish a connection with a base station based at least in part on the random access signal.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: September 13, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Sun, Andrei Dragos Radulescu, Ananta Narayanan Thyagarajan, Pravjyot Singh Deogun, Xiaoxia Zhang, Kapil Bhattad
  • Patent number: 11432229
    Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify a globally unique set of characteristics associated with a cell associated with the base station. The base station may generate a signature value unique to the cell based at least in part on a hash of the globally unique set of characteristics associated with the cell. The base station may transmit a control signal over a channel of a shared radio frequency spectrum band, the control signal comprising a physical cell identifier of the cell and the signature value.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: August 30, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Andrei Dragos Radulescu, Aleksandar Damnjanovic, Xiaoxia Zhang, Jing Sun
  • Publication number: 20220255688
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may provide, to a distributed unit (DU) of the base station, an indication of one or more candidate physical entity (PHY) profiles. The base station may receive, from the DU, an indication of a selected PHY profile, of the one or more candidate PHY profiles, to use for communication with a device, such as a user equipment. Numerous other aspects are described.
    Type: Application
    Filed: February 9, 2022
    Publication date: August 11, 2022
    Inventors: Andrei Dragos RADULESCU, Fatih ULUPINAR
  • Patent number: 11382027
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a remote radio head may transmit, during a user equipment (UE) RRH discovery procedure with a UE, an RRH identifier to the UE for reporting to a base station (BS) associated with the RRH and the UE; receive, from the BS, communication configuration information based at least in part on transmitting the RRH identifier, wherein the communication configuration information includes at least one of scheduling information or configuration information; and communicate with the UE in accordance with the communication configuration information. Numerous other aspects are provided.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: July 5, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Arumugam Chendamarai Kannan, Jing Sun, Srinivas Yerramalli, Andrei Dragos Radulescu, Xiaoxia Zhang
  • Patent number: 11368927
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may transmit, and a user equipment (UE) may receive, a bitmap that includes a bit sequence to indicate a synchronization signal block (SSB) transmission pattern. The UE may perform rate matching around one or more candidate SSB positions in an initial portion of a window in which SSB transmission is expected, based at least in part on the bitmap, a first parameter indicating a quantity of initial candidate SSB positions in the window subject to rate matching, and a second parameter indicating a quantity of initial bits in the bit sequence that define the SSB transmission pattern. Numerous other aspects are provided.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: June 21, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Dragos Radulescu, Jing Sun, Xiaoxia Zhang
  • Publication number: 20220132408
    Abstract: A discovery measurement timing configuration (DMTC) window reservation signal is disclosed for new radio (NR) shared spectrum (NR-SS) networks. The DMTC window is defined providing a reserved location for transmission of essential control signaling and potentially high priority traffic that may be transmitted in a prioritized manner. Access within the DMTC window may be provided with a clear channel assessment (CCA) exempt transmission (CET) option or a non-CET option. When the CET option is used, the reservation duration and period may be conveyed through the channel reservation signal. User equipments (UEs) that detect the reservation signal may re-transmit with added offset to inform neighboring base station that may not be within range of the serving base station. Base station that receive either the transmitted or re-transmitted reservation signal will refrain from communications that may interfere with the reception at the UEs.
    Type: Application
    Filed: January 11, 2022
    Publication date: April 28, 2022
    Inventors: Aleksandar Damnjanovic, Andrei Dragos Radulescu, Tamer Kadous, Jing Sun, Xiaoxia Zhang, Taesang Yoo
  • Patent number: 11290988
    Abstract: Some communication systems enable a user equipment (UE) to have different timelines depending on a category of the UE. One goal of the present method and apparatus is to improve channel utilization by reducing uplink transmission delays (or latency) for a UE in the unlicensed spectrum by not having to rely on a base station to have access to the wireless medium in order to assign a grant to the UE. The UE can transmit on an autonomous uplink (AUL) without having received an uplink grant. When a UE sends AUL traffic during a UE indicated timeline, the base station can indicate a reduced uplink physical uplink shared channel (PUSCH) processing timeline to the UE. The base station may further configure downlink feedback information (DFI) or downlink control information (DCI) monitoring opportunities for the UE. The UE may indicate the preferred AUL processing timeline.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: March 29, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Andrei Dragos Radulescu, Jing Sun
  • Publication number: 20220060216
    Abstract: Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration.
    Type: Application
    Filed: November 3, 2021
    Publication date: February 24, 2022
    Inventors: Aleksandar DAMNJANOVIC, Srinivas YERRAMALLI, Xiaoxia ZHANG, Tamer KADOUS, Yongbin WEI, Jing SUN, Andrei Dragos RADULESCU
  • Publication number: 20220053413
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a remote radio head may transmit, during a user equipment (UE) RRH discovery procedure with a UE, an RRH identifier to the UE for reporting to a base station (BS) associated with the RRH and the UE; receive, from the BS, communication configuration information based at least in part on transmitting the RRH identifier, wherein the communication configuration information includes at least one of scheduling information or configuration information; and communicate with the UE in accordance with the communication configuration information. Numerous other aspects are provided.
    Type: Application
    Filed: August 17, 2020
    Publication date: February 17, 2022
    Inventors: Aleksandar DAMNJANOVIC, Arumugam CHENDAMARAI KANNAN, Jing SUN, Srinivas YERRAMALLI, Andrei Dragos RADULESCU, Xiaoxia ZHANG
  • Patent number: 11252645
    Abstract: A discovery measurement timing configuration (DMTC) window reservation signal is disclosed for new radio (NR) shared spectrum (NR-SS) networks. The DMTC window is defined providing a reserved location for transmission of essential control signaling and potentially high priority traffic that may be transmitted in a prioritized manner. Access within the DMTC window may be provided with a clear channel assessment (CCA) exempt transmission (CET) option or a non-CET option. When the CET option is used, the reservation duration and period may be conveyed through the channel reservation signal. User equipments (UEs) that detect the reservation signal may re-transmit with added offset to inform neighboring base station that may not be within range of the serving base station. Base station that receive either the transmitted or re-transmitted reservation signal will refrain from communications that may interfere with the reception at the UEs.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: February 15, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Andrei Dragos Radulescu, Tamer Kadous, Jing Sun, Xiaoxia Zhang, Taesang Yoo
  • Publication number: 20220046708
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a fixed frame period (FFP) configured for the UE in a frame based equipment mode. The FFP configured for the UE includes one or more idle periods and a channel occupancy time that is offset from an FFP configured for a base station communicating with the UE over an unlicensed channel. The UE may refrain from transmitting over the unlicensed channel during the one or more idle periods. The one or more idle periods may at least partially overlap with a time period in which the base station refrains from transmitting over the unlicensed channel. Numerous other aspects are provided.
    Type: Application
    Filed: April 21, 2021
    Publication date: February 10, 2022
    Inventors: Jing SUN, Xiaoxia ZHANG, Tao LUO, Aleksandar DAMNJANOVIC, Juan MONTOJO, Rajat PRAKASH, Andrei Dragos RADULESCU