Patents by Inventor Aleksandar Damnjanovic

Aleksandar Damnjanovic 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: 20210058968
    Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify a listen-before-talk (LBT) procedure to use for transmitting a downlink signal to a user equipment (UE) on a shared radio frequency spectrum band. The LBT procedure may be a group LBT procedure associated with a first set of contention window durations or an individual listen-before talk procedure associated with a second set of contention window durations. The base station may determine a contention window duration corresponding to the identified LBT procedure, perform the identified LBT procedure using the determined contention window duration, and transmit the downlink signal to the UE based on the performed LBT procedure.
    Type: Application
    Filed: August 17, 2020
    Publication date: February 25, 2021
    Inventors: Yisheng Xue, Aleksandar Damnjanovic, Xiaoxia Zhang, Yongbin Wei
  • Patent number: 10932286
    Abstract: Methods, systems, and devices for wireless communication are described. A receiving device may detect a signal associated with low latency transmissions and decode a non-low latency communication accordingly. The receiving device may receive an indicator from a transmitting device that indicates where and when low latency communications occur. The indication may specify frequency resources or symbols used by the low latency communication. The indicator may be transmitted during the same subframe as the low latency communication, at the end of a subframe, or during a subsequent subframe. The receiving device may use the indicator to mitigate low latency interference, generate channel estimates, and reliably decode the non-low latency communication. In some cases, the interfering low latency communication may occur within the serving cell of the receiving device; or the interfering low latency communication may occur in a neighboring cell.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: February 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Durga Prasad Malladi, Peter Gaal, Yongbin Wei, Hao Xu, Shimman Arvind Patel, Aleksandar Damnjanovic
  • Publication number: 20210051701
    Abstract: Methods, systems, and devices for wireless communications are described. A communication device, which may be otherwise known as a user equipment may receive control signaling that configures the communication device with a set of configured grant configurations. The communication device may receive, via a group control channel, group downlink control information (DCI) for a plurality of communication devices that includes the communication device. In some examples, the group control channel may be a group physical downlink control channel. The communication device may communicate a data transmission in accordance with a first configured grant configuration of the plurality of configured grant configurations based on a configuration indication in the group DCI indicating the first configured grant configuration.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 18, 2021
    Inventors: Seyed Ali Akbar Fakoorian, Aleksandar Damnjanovic, Tao Luo, Xiaoxia Zhang, Yan Zhou, Jing Sun
  • Publication number: 20210051634
    Abstract: This disclosure provides systems, methods, and apparatuses for jointly activating or releasing a plurality of semi-persistent scheduling (SPS) configurations using a single downlink control information (DCI) message. In some implementations, a user equipment (UE) receiving the DCI message can determine, for each SPS configuration, a number of time slots between an end of the received DCI message and a beginning of one or more downlink (DL) data frames based on a first value contained in the DCI message. The UE can also determine, for each SPS configuration, a number of time slots between an end of the DL data frames and an instance in time at which the UE is to transmit a hybrid automatic repeat request acknowledgement (HARQ-ACK) based on a second value contained in the DCI message. In some instances, the single DCI message can also jointly activate or release a plurality of configured grant (CG) configurations.
    Type: Application
    Filed: July 29, 2020
    Publication date: February 18, 2021
    Inventors: Seyed Ali Akbar FAKOORIAN, Xiaoxia ZHANG, Aleksandar DAMNJANOVIC, Jing SUN
  • Publication number: 20210051717
    Abstract: Certain aspects of the present disclosure provide techniques for reuse one channel access for new radio communications in unlicensed spectrum. A method that may be performed by a first base station (BS) includes occupying a bandwidth, based on a category 4 (CAT4) listen before talk (LBT) procedure on the bandwidth, wherein the CAT4 LBT procedure is based on a first contention window (CW); arranging a category 2 (CAT2) LBT occasion for the bandwidth during a channel occupancy time (COT) for the bandwidth; and receiving an indication that at least a second BS has occupied the bandwidth during the CAT2 LBT occasion.
    Type: Application
    Filed: August 11, 2020
    Publication date: February 18, 2021
    Inventors: Yisheng XUE, Xiaoxia ZHANG, Aleksandar DAMNJANOVIC, Jing SUN, Yongbin WEI
  • Publication number: 20210051600
    Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently performing and reporting reference signal received power (RSRP) measurements. In particular, the techniques described herein may allow a user equipment (UE) to efficiently identify reference signals on which to perform RSRP measurements (e.g., based on signaling from a base station), identify when to report RSRP measurements (e.g., aperiodically, periodically, or semi-persistently), and identify a channel on which to report RSRP measurements (e.g., a sidelink channel or an uplink channel). In addition, the techniques described herein may also allow a UE to efficiently identify open loop parameters to use to determine an appropriate transmit power for transmitting to another UE over a sidelink.
    Type: Application
    Filed: August 11, 2020
    Publication date: February 18, 2021
    Inventors: Seyed Ali Akbar Fakoorian, Piyush Gupta, Kapil Gulati, Junyi Li, Xiaoxia Zhang, Aleksandar Damnjanovic
  • Patent number: 10924237
    Abstract: The present methods and apparatus enable transmission of an interlaced reference signal for two UEs using a comb structure. In some aspects, the present methods and apparatus may allocate resources and indicate whether a first UE and a second UE are to transmit DM-RS with a comb structure in a single slot based on the allocation. Further, in some aspects, the present methods and apparatus may allocate resources and transmit information indicating whether a first UE is to transmit DM-RS in a first slot or in both a first slot and a second slot within a subframe.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: February 16, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Shimman Arvind Patel, Wanshi Chen, Juan Montojo, Peter Gaal, Seyedkianoush Hosseini, Aleksandar Damnjanovic, Hao Xu
  • Patent number: 10925090
    Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may determine an interference status of each beam configuration of a plurality of active beam configurations for a shared radio frequency spectrum band. The wireless device may determine a beam-specific listen-before-talk (LBT) requirement for each beam configuration of the plurality of active beam configurations based at least in part on the determined interference status of each beam configuration. The wireless device may selectively enable an LBT procedure on a per-beam basis according to the determined beam-specific LBT requirement for each beam configuration.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: February 16, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Arumugam Chendamarai Kannan, Ahmed Kamel Sadek, Aleksandar Damnjanovic, Sanaz Barghi, Tamer Kadous
  • Patent number: 10925091
    Abstract: Wireless communications systems and methods related to performing listen-before-talk (LBT) with discovery signal transmissions for spectrum sharing are provided. A wireless communication device senses a channel in a spatial domain based on a plurality of expected beam transmission directions, wherein the wireless communication device is associated with a first network operating entity, and wherein the channel is shared by a plurality of network operating entities including the first network operating entity. The wireless communication device transmits a plurality of discovery signals in one or more of the plurality of expected beam transmission directions during a discovery period to facilitate synchronization in the channel based on the sensing.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: February 16, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Aleksandar Damnjanovic, Jing Sun
  • Publication number: 20210045096
    Abstract: Certain aspects of the present disclosure provide techniques for new radio (NR) communications in narrowband regions of unlicensed spectrum. A method that may be performed by a user equipment (UE) includes determining, using an energy detector (ED), that received energy in a first bandwidth (BW) is lower than a threshold; and transmitting, in response to determining that received energy in the first BW is lower than the threshold, a first uplink (UL) transmission to a base station (BS) in a second BW smaller than the first BW and contained within the first BW.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 11, 2021
    Inventors: Yisheng XUE, Xiaoxia ZHANG, Aleksandar DAMNJANOVIC, Jing SUN, Qingjiang TIAN, Yongbin WEI
  • Publication number: 20210044982
    Abstract: Wireless communications systems and methods related to coordinating shared radio resources for spectrum sharing are provided. A spectrum resource control unit allocates a first resource for exclusive access by a first network operating entity in a spectrum. The exclusive access is configured for at least one of a network information communication or a feedback communication. The spectrum resource control unit allocates a second resource in the spectrum for shared access by the first network operating entity and a second network operating entity. The shared access is configured for at least a downlink control information communication. The spectrum resource control unit transmits, to the first network operating entity and the second network operating entity, a configuration indicating the first resource allocated for exclusive access by the first network operating entity and the second resource allocated for shared access by the first network operating entity and the second network operating entity.
    Type: Application
    Filed: October 28, 2020
    Publication date: February 11, 2021
    Inventors: Aleksandar Damnjanovic, Tamer Kadous, Yongbin Wei, Xiaoxia Zhang, Srinivas Yerramalli
  • Patent number: 10904783
    Abstract: Enhanced carrier aggregation may require development of mechanisms to enable carrier aggregation for an increased number of component carriers. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus for wireless communication are provided. The apparatus may be a user equipment. The apparatus may receive, with an uplink grant, a request for channel state information. The apparatus determines the number of bits comprising the request. The determined number of bits may be based on or associated with the number of serving cells configured for the apparatus. The apparatus reports the channel state information in response to the request based on information in the determined number of bits.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: January 26, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Jelena Damnjanovic, Peter Gaal, Aleksandar Damnjanovic, Hao Xu, Tao Luo
  • Patent number: 10904801
    Abstract: Wireless communications systems and methods related to spectrum pooling among multiple carriers or operators for peak rate performance improvement are provided. A first wireless communication device communicates, with a second wireless communication device, a first reservation request signal to reserve a transmission period in a frequency spectrum shared by a first operator and a second operator. The first wireless communication device and the second wireless communication device are associated with the first operator and a first cell. The first reservation request signal carries a request signature sequence associated with the first cell. The first wireless communication device communicates, with the second wireless communication device, data during the transmission period in the frequency spectrum shared by the first and second operators.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: January 26, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Aleksandar Damnjanovic, Juan Montojo, Junyi Li, Xiaoxia Zhang, Taesang Yoo
  • Patent number: 10904865
    Abstract: Certain aspects relate to methods and apparatus for latency reduction for UEs in a RRC connected mode. During contention-based uplink access by groups of UEs within a subframe, an eNB may decode the received uplink transmission based, at least in part, on the assigned group of resources assigned to the UE and used for transmission. Additional orthogonalization techniques such as reduced TTI size can be used to reduce collisions among different users performing contention-based transmissions. Furthermore, when the eNB fails to successfully decode the uplink transmission, the eNB may identify the UE that sent the uplink transmission based on a detected reference signal and may transmit an uplink assignment to the identified UE.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: January 26, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Hao Xu, Aleksandar Damnjanovic, Onkar Jayant Dabeer, Peter Gaal, Wanshi Chen, Shimman Arvind Patel, Yongbin Wei, Durga Prasad Malladi
  • Publication number: 20210014892
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may determine a configuration for UE-to-UE sharing of a channel occupancy time (COT) and may transmit the configuration to a UE to indicate that it can share a UE-acquired COT with at least another UE. A UE may acquire a COT using a listen-before-talk (LBT) procedure, and if successful, may transmit a signal indicating that the COT is being shared with at least another UE. Additionally, a UE may receive a signal from another UE indicating that it has acquired a COT in a shared spectrum and that the COT is being shared with other UEs. The UE may perform a shortened LBT procedure within the COT, and if successful, may transmit an uplink transmission in the shared spectrum.
    Type: Application
    Filed: July 9, 2020
    Publication date: January 14, 2021
    Inventors: Yisheng XUE, Xiaoxia ZHANG, Jing SUN, Aleksandar DAMNJANOVIC, Yongbin WEI
  • Publication number: 20210007052
    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may monitor a narrowband (e.g., a single carrier, anchor carrier, etc.) for a control message that includes a grant for downlink data transmissions. The narrowband containing the control message may be a portion of a system bandwidth. The UE may then monitor a wideband (e.g., all or multiple carriers of the system bandwidth) for data according to the control message. Monitoring the wideband may include additional or alternate circuitry being powered (e.g., receiver circuit switching) to enable reception on an increased range of frequency spectrum. In some examples, a gap or narrowband data transmission may be scheduled between the control message and the grant to allow grant processing and receiver circuitry switching at the UE. In some cases, the control message and data transmission may be received in the same or different transmission time intervals (TTIs).
    Type: Application
    Filed: July 27, 2020
    Publication date: January 7, 2021
    Inventors: Xiaoxia Zhang, Wei Zhang, Aleksandar Damnjanovic, Juan Montojo
  • Patent number: 10887941
    Abstract: Techniques are described for wireless communication. One method includes receiving, in a downlink portion of a transmission structure on a shared radio frequency spectrum band, an uplink grant for an uplink data portion of the transmission structure. The transmission structure includes the downlink portion, followed by and time domain multiplexed with an uplink control portion, followed by and time domain multiplexed with the uplink data portion. The method also includes retaining access to the shared radio frequency spectrum band by transmitting an unscheduled transmission during the uplink control portion of the transmission structure.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: January 5, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Taesang Yoo, Zhifei Fan, Jing Sun, Juan Montojo, Siddhartha Mallik, Aleksandar Damnjanovic, Xiaoxia Zhang
  • Patent number: 10880844
    Abstract: A periodic quiet interval is provided for base stations attempting to access a shared transmission medium in NR-U. The base station activates a quiet interval at a periodic interval and transmits on the medium based on the quiet interval. The base station may reduce a Tx power, not transmit, and/or may increase a minimum value of a contention window for BEB during the quiet interval. The base station may receive a request from a second base station to activate the quiet interval, and may determine if a Tx power of the base station is larger than the maximum Tx power of the second base station. The base station may also receive the request as relayed through a UE. The quiet interval can thus ameliorate a starvation effect of BEB in NR-U by allowing base stations with smaller Tx power greater opportunity to control the medium while maintaining BEB in NR-U.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: December 29, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Yisheng Xue, Aleksandar Damnjanovic, Xiaoxia Zhang, Jing Sun, Yongbin Wei
  • Patent number: 10880889
    Abstract: Wireless communications systems and methods related to communications with narrowband wireless communication devices over a wide frequency band are provided. A first wireless communication device transmits a first configuration indicating a first set of channel monitoring occasions for a first channel and a second set of channel monitoring occasions for a second channel. The first wireless communication device transmits, in the first channel based on at least a listen-before-talk (LBT) in the first channel, a first occupancy indication signal indicating a first transmission opportunity (TXOP) in the first channel. The first wireless communication device transmits, in the first channel based on the first configuration, a second occupancy indication signal associated with the first TXOP in the first channel during a channel monitoring occasion of the first set of channel monitoring occasions within the first TXOP.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: December 29, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Yisheng Xue, Aleksandar Damnjanovic, Jing Sun, Tamer Kadous, Yongbin Wei
  • Publication number: 20200404580
    Abstract: Techniques for transmitting and receiving wireless communications over an unlicensed radio frequency spectrum band are disclosed, including techniques for transmitting and receiving system information blocks over the unlicensed radio frequency spectrum band, techniques for gaining access to the unlicensed radio frequency spectrum band by performing extended clear channel assessments (ECCAs), techniques for transmitting and receiving synchronization signals and reference signals over the unlicensed radio frequency spectrum band, techniques for identifying starting times of downlink transmissions over the unlicensed radio frequency spectrum band, techniques for transmitting and receiving clear channel assessment (CCA)-exempt transmissions over the unlicensed radio frequency spectrum band, techniques for performing random access over the unlicensed radio frequency spectrum band, and techniques for dynamically modifying a transmission mode over the unlicensed radio frequency spectrum band.
    Type: Application
    Filed: July 6, 2020
    Publication date: December 24, 2020
    Inventors: Durga Prasad Malladi, Yongbin Wei, Tao Luo, Aleksandar Damnjanovic