Patents by Inventor Tamer Kadous
Tamer Kadous 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).
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Patent number: 11722910Abstract: Wireless communications systems and methods related to on-demand cell coverage extension for broadcast signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first extended cell coverage request. The first wireless communication device communicates, with the second wireless communication device, a first broadcast communication signal in an extended cell coverage mode in response to the first extended cell coverage request. The first broadcast communication signal includes a system information block repeated in at least one of a time domain or a frequency domain.Type: GrantFiled: April 28, 2021Date of Patent: August 8, 2023Assignee: QUALCOMM IncorporatedInventors: Xiaoxia Zhang, Zhifei Fan, Jing Sun, Andrei Dragos Radulescu, Srinivas Yerramalli, Tamer Kadous
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Patent number: 11716633Abstract: Wireless communications systems and methods related to communications in a network that supports data transmitted in an unlicensed frequency band and a licensed frequency band are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a first resource in an unlicensed frequency band and a second resource in a licensed band. The first wireless communication device communicates, with the second wireless communication device in the unlicensed frequency band, a first communication signal based on the configuration. The first wireless communication device communicates with the second wireless communication device in the licensed frequency band, a second communication signal based on at least one of a channel status of the unlicensed frequency band or a transmission parameter associated with at least one of the first communication signal or the second communication signal.Type: GrantFiled: June 10, 2022Date of Patent: August 1, 2023Assignee: QUALCOMM IncorporatedInventors: Kaushik Chakraborty, Xiaoxia Zhang, Jing Sun, Tamer Kadous
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Patent number: 11711109Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.Type: GrantFiled: May 19, 2021Date of Patent: July 25, 2023Assignee: QUALCOMM IncorporatedInventors: Chih-Hao Liu, Srinivas Yerramalli, Tamer Kadous
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Patent number: 11700090Abstract: Wireless communications systems and methods related to providing frequency diversity for communications in an unlicensed spectrum are provided. A first wireless communication device communicates, with a second wireless communication device, an opportunistic frequency-switching configuration for a first frequency band and a second frequency band. The first frequency band and the second frequency band are shared by a first network operating entity and a second network operating entity. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in a first frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device switches from the first frequency band to a second frequency band based on the opportunistic frequency-switching configuration.Type: GrantFiled: June 3, 2021Date of Patent: July 11, 2023Assignee: QUALCOMM IncorporatedInventors: Aleksandar Damnjanovic, Srinivas Yerramalli, Tamer Kadous, Yongbin Wei
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Patent number: 11696284Abstract: Generally, the described techniques provide for a base station transmitting an indication of a set of one or more available channels to a user equipment (UE). The base station may transmit to the UE a first downlink burst using a first channel and a first frame period. In some cases, the base station may detect interference associated with the first downlink burst, for example, by performing a listen-before-talk (LBT) procedure or through an interference management resources (IMR) procedure in which the base station transmits reference signal signals to the UE that the UE may use to return a report on measured interference. If the base station detects interference, the base station may transmit to the UE an instruction to switch to a second channel and a second frame period, where the second channel may be selected from the set of one or more available channels.Type: GrantFiled: September 6, 2019Date of Patent: July 4, 2023Assignee: QUALCOMM IncorporatedInventors: Chih-Hao Liu, Seyed Ali Akbar Fakoorian, Srinivas Yerramalli, Qingjiang Tian, Andrei Dragos Radulescu, Tamer Kadous
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Patent number: 11683770Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a first synchronization sequence and generate a second synchronization sequence based at least in part on the first synchronization sequence. The base station may map the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band and the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel. The base station may then transmit the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping. In some cases, the second synchronization sequence may be generated by applying a first phase shift to the first synchronization sequence.Type: GrantFiled: June 2, 2021Date of Patent: June 20, 2023Assignee: QUALCOMM IncorporatedInventors: Srinivas Yerramalli, Arumugam Chendamarai Kannan, Chih-Hao Liu, Tamer Kadous
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Patent number: 11683833Abstract: Wireless communications systems and methods related to considering channel variations for medium sharing in a spatial domain are provided. A first wireless communication device transmits one or more reservation response signals indicating spatial channel information in response to a reservation request for a transmission opportunity (TXOP) in a frequency spectrum. The first wireless communication device receives, from a second wireless communication device, a communication signal from a first spatial subspace during the TXOP based on the reservation request. In one embodiment, the first wireless communication device may repeat a transmission of the reservation response signal after transmitting a portion of the communication signal. In another embodiment, the first wireless communication device may include a channel variation parameter in the reservation response signal.Type: GrantFiled: July 30, 2018Date of Patent: June 20, 2023Assignee: QUALCOMM IncorporatedInventors: Xiaoxia Zhang, Taesang Yoo, Siddhartha Mallik, Tamer Kadous
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Patent number: 11677518Abstract: A receiver is configured to detect a plurality of signals on a plurality of subbands over a communication channel that operates on a shared or an unlicensed spectrum. Additionally, the receiver is configured to perform joint correlation over a time domain and a frequency domain of each successive signal of the plurality of signals. Moreover, the receiver is configured to determine a sequence based on the joint correlation. Additionally, the receiver is configured to decode transmission information from the sequence.Type: GrantFiled: February 24, 2021Date of Patent: June 13, 2023Assignee: Qualcomm IncorproatedInventors: Jing Lei, Srinivas Yerramalli, Tamer Kadous
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Patent number: 11677488Abstract: User equipment associated with a legacy network may utilize a bottom-to-top search technique to identify relevant control channel samples. Generating a control channel that is configured for the bottom-to-top search technique may lead to poor performance in a single-carrier waveform, which may be disadvantageous as networks move toward New Radio. In some aspects, described herein, a base station generates a control channel that is configured to minimize gaps in the control channel, and a user equipment performs a top-to-bottom search technique to identify relevant control channel samples. By using the top-to-bottom search technique, degradation of single-carrier waveforms is reduced and efficiency is improved.Type: GrantFiled: August 26, 2022Date of Patent: June 13, 2023Assignee: QUALCOMM IncorporatedInventors: Jing Sun, Tao Luo, Tamer Kadous, Juan Montojo, Xiao Feng Wang, Sony Akkarakaran
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Patent number: 11678367Abstract: Wireless communications systems and methods related to communicating in a frequency band based on bandwidth parts are provided. A first wireless communication device communicates with a second wireless communication device, a first configuration indicating a plurality of bandwidth parts in a frequency band, the plurality of bandwidth parts based on an expected channel access pattern associated with a listen-before-talk (LBT) in the frequency band. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in a first bandwidth part of the plurality of bandwidth parts based on an LBT result.Type: GrantFiled: May 17, 2022Date of Patent: June 13, 2023Assignee: Qualcomm IncorporatedInventors: Xiaoxia Zhang, Tamer Kadous, Kapil Bhattad, Jing Sun
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Patent number: 11678333Abstract: Enhancement for bandwidth part (BWP) is disclosed. A base station configures a plurality of BWPs, and activate multiple BWPs for downlink and multiple BWPs for uplink from the plurality of the configured BWPs at a given time. Downlink control information (DCI) that includes BWP activation information can be transmitted on a physical downlink control channel (PDCCH) to a user equipment (UE). The BWP activation information includes a link direction, a schedule of the one or more multiple BWPs for downlink and multiple BWPs for uplink, numerologies, reserved sub-band information, tracking reference signal configuration, or any combination thereof. Correspondingly, a UE receives DCI on a PDCCH that includes BWP activation information, and determines activation of multiple BWPs for downlink and multiple BWPs for uplink at a given time based on the received DCI and its capabilities. Associated enhancement for PDCCH and PDSCH scheduling and LBT procedures are also disclosed.Type: GrantFiled: September 4, 2018Date of Patent: June 13, 2023Assignee: QUALCOMM IncorporatedInventors: Jing Lei, Jing Sun, Tamer Kadous
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Patent number: 11653341Abstract: Methods, systems, and devices for wireless communications are described that provide for frame-based initiator device operations. A wireless device may be operating within a frame-based equipment communications system, where a frame may include a channel occupancy time period and a minimum idle period. An initiating device may be configured to initiate autonomous uplink communications during the channel occupancy time period of its frame, while the device may not initiate communications during an idle period of its frame. In some cases, a frame-based equipment communications system may include more than one initiating device, where the idle periods for different initiating devices may occur at different times. In some cases, the initiating device may be configured to initiate communications during the idle period for another initiating device. This may allow the wireless system to decrease system overhead associated with a minimum idle period per frame.Type: GrantFiled: July 5, 2021Date of Patent: May 16, 2023Assignee: QUALCOMM IncorporatedInventors: Srinivas Yerramalli, Jing Sun, Xiaoxia Zhang, Tamer Kadous, Yongbin Wei
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Patent number: 11653216Abstract: Methods, systems, and devices for wireless communication are described. A base station may configure a system bandwidth of shared spectrum partitioned into a plurality of bandwidth parts based on interference associated with each of the plurality of bandwidth parts. The base station may then transmit the configuration of the system bandwidth to a plurality of devices. A UE may receive, from a base station, a configuration of a system bandwidth of shared spectrum. The system bandwidth may be partitioned into a plurality of bandwidth parts based on interference associated with each of the plurality of bandwidth parts. The UE may then communicate with the base station on at least one of the bandwidth parts.Type: GrantFiled: March 22, 2021Date of Patent: May 16, 2023Assignee: QUALCOMM IncorporatedInventors: Srinivas Yerramalli, Rahul Malik, Tamer Kadous
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Patent number: 11647496Abstract: Techniques for autonomous uplink (AUL) transmissions are provided that allow for efficient use of shared radio frequency spectrum band resources. A user equipment (UE) may determine a duration of an AUL transmission and modify an uplink waveform or provide an indication to a base station of one or more channel resources that may be available for base station transmissions, in order to more fully utilize shared radio frequency spectrum band resources within a maximum channel occupancy time (MCOT). A base station may activate or deactivate AUL transmissions through downlink control information (DCI) transmitted to the UE. A UE and base station may exchange various other control information to provide relatively efficient autonomous uplink transmissions and use of the shared radio frequency spectrum band resources.Type: GrantFiled: August 7, 2020Date of Patent: May 9, 2023Assignee: QUALCOMM IncorporatedInventors: Srinivas Yerramalli, Ahmed Kamel Sadek, Tamer Kadous
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Publication number: 20230133941Abstract: Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.Type: ApplicationFiled: November 3, 2022Publication date: May 4, 2023Inventors: Tao LUO, Juan MONTOJO, Tamer KADOUS, Junyi LI, Xiaoxia ZHANG, Jing SUN, Taesang YOO, Siddhartha MALLIK
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Patent number: 11622353Abstract: A base station may configure a set of autonomous uplink (AUL) resources for a specific base station receive beam, or the AUL resources may be configured for specific user equipment (UEs) or user groups. Additionally, the AUL resources may be configured to include a sensing portion, a data portion, or both. As an example, a UE may receive an AUL configuration that includes an indication of a set of AUL resources that are specific to a base station receive beam. The UE may then determine that the set of AUL resources is available and perform an AUL transmission of uplink data using the set of beam-specific AUL resources. Additionally or alternatively, the UE may perform the AUL transmission with respective portions that include a sensing signal and the uplink data. The base station may use the sensing signal to determine a receive beam on which to receive the uplink data.Type: GrantFiled: February 3, 2021Date of Patent: April 4, 2023Assignee: QUALCOMM IncorporatedInventors: Kapil Bhattad, Jing Sun, Xiaoxia Zhang, Yongbin Wei, Tamer Kadous, Srinivas Yerramalli, Tao Luo
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Publication number: 20230059005Abstract: User equipment associated with a legacy network may utilize a bottom-to-top search technique to identify relevant control channel samples. Generating a control channel that is configured for the bottom-to-top search technique may lead to poor performance in a single-carrier waveform, which may be disadvantageous as networks move toward New Radio. In some aspects, described herein, a base station generates a control channel that is configured to minimize gaps in the control channel, and a user equipment performs a top-to-bottom search technique to identify relevant control channel samples. By using the top-to-bottom search technique, degradation of single-carrier waveforms is reduced and efficiency is improved.Type: ApplicationFiled: August 26, 2022Publication date: February 23, 2023Inventors: Jing SUN, Tao LUO, Tamer KADOUS, Juan MONTOJO, Xiao Feng WANG, Sony AKKARAKARAN
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Patent number: 11582000Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a gap period following a downlink portion of a time division duplexing (TDD) frame. The UE may selectively perform, based at least in part on the gap period, a clear channel assessment (CCA) on a channel of a radio frequency spectrum band. The UE may transmit at least one of a sounding reference signal (SRS) or a physical random access channel (PRACH) preamble in a set of initial symbols of an uplink portion of the TDD frame following the gap period, wherein the SRS or PRACH preamble is frequency-domain multiplexed during the set of initial symbols with one or more of: a demodulation reference signal (DMRS), an uplink data transmission, an uplink control transmission, or a random access transmission.Type: GrantFiled: May 8, 2019Date of Patent: February 14, 2023Assignee: QUALCOMM IncorporatedInventors: Xiaoxia Zhang, Srinivas Yerramalli, Jing Sun, Tamer Kadous
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Patent number: 11570815Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may rate match an uplink transmission around a set of resources reserved by a base station. The base station may indicate a set of reserved resources which overlaps an uplink resource allocation to the UE. The base station may transmit an indicator of the reserved resources, and the UE may identify a location of a clear channel assessment (CCA) gap in a symbol period relative to the reserved resources. By rate matching around the reserved resources and one or more CCA gaps, the UE may transmit uplink information despite the allocated uplink resources colliding with the reserved resources.Type: GrantFiled: September 14, 2021Date of Patent: January 31, 2023Assignee: QUALCOMM IncorporatedInventors: Kapil Bhattad, Jing Sun, Xiaoxia Zhang, Ananta Narayanan Thyagarajan, Tamer Kadous
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Publication number: 20230016995Abstract: Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, an event trigger may be based on aggregated measurements from multiple links.Type: ApplicationFiled: September 22, 2022Publication date: January 19, 2023Inventors: Tao LUO, Juan MONTOJO, Tamer KADOUS, Junyi LI, Xiaoxia ZHANG, Jing SUN, Taesang YOO, Siddhartha MALLIK