Patents by Inventor Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL

Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL 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: 20220007434
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station, an indication of a time gap value associated with a random access channel (RACH) procedure, wherein the time gap value is based at least in part on a capability of the base station, determine whether a physical RACH (PRACH) occasion associated with the RACH procedure is valid based at least in part on receiving the indication of the time gap value associated with the RACH procedure, and selectively transmit, to the base station, a PRACH transmission in the PRACH occasion based at least in part on determining whether the PRACH occasion is valid. Numerous other aspects are provided.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 6, 2022
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL, Tao LUO, Xiaoxia ZHANG, Qiang WU, Jun MA, Iyab Issam SAKHNINI, Jing SUN, Mehmet Izzet GURELLI, Anantha Krishna Karthik NAGARAJAN, Juan MONTOJO, Peter GAAL
  • Publication number: 20220007420
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station, a random access configuration indicating spreading code information for a set of random access channel (RACH) occasions associated with a RACH procedure, and transmit, to the base station, a physical RACH communication in a RACH occasion, of the set of RACH occasions, using a spreading code, wherein the spreading code is determined based at least in part on the spreading code information. Numerous other aspects are provided.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 6, 2022
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL, Xiaoxia ZHANG, Tao LUO, Qiang WU, Jun MA, Iyab Issam SAKHNINI, Mehmet Izzet GURELLI, Anantha Krishna Karthik NAGARAJAN, Jing SUN, Juan MONTOJO, Peter GAAL
  • Publication number: 20220007421
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station, a random access configuration indicating synchronization signal block (SSB)-to-random access channel (RACH) occasion mapping information, wherein the SSB-to-RACH occasion mapping information is associated with a first set of RACH occasions and a second set of RACH occasions, select a RACH occasion based at least in part on the SSB-to-RACH occasion mapping information, and transmit, to the base station, a physical RACH communication using the RACH occasion based at least in part on selecting the RACH occasion. Numerous other aspects are provided.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 6, 2022
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL, Xiaoxia ZHANG, Tao LUO, Qiang WU, Jun MA, Iyab Issam SAKHNINI, Mehmet Izzet GURELLI, Anantha Krishna Karthik NAGARAJAN, Jing SUN, Juan MONTOJO, Peter GAAL
  • Publication number: 20210410118
    Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication. In one aspect of the disclosure, a method of wireless communication performed by a user equipment (UE) includes receiving, from a base station, a scheduling downlink control information (DCI) message in a physical downlink control channel (PDCCH). The scheduling DCI message indicates a resource allocation for a scheduled DCI message in a subsequent physical downlink shared channel (PDSCH). The method further includes receiving, from the base station, the scheduled DCI message within the subsequent PDSCH. Other aspects and features are also claimed and described.
    Type: Application
    Filed: June 29, 2020
    Publication date: December 30, 2021
    Inventors: Mehmet Izzet Gurelli, Qiang Wu, Iyab Issam Sakhnini, Jun Ma, Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Tao Luo, Jing Sun, Xiaoxia Zhang, Peter Gaal, Juan Montojo
  • Publication number: 20210392593
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration of a set of synchronization signal blocks (SSBs) to be transmitted by a first base station or a second base station. In some cases, the UE may be served by the first base station and the UE may receive, from the first base station or the second base station, a message indicating that a transmission of at least one SSB of the set of SSBs is canceled and indicating resources for a signal (e.g., a reference signal, alternative SSB transmission) to be transmitted by the first base station or the second base station as an alternative to the canceled at least one SSB. The UE may receive, based on the received message from the first base station or the second base station, the signal using the indicated resources.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 16, 2021
    Inventors: Anantha Krishna Karthik Nagarajan, Jun Ma, Tao Luo, Peter Gaal, Qiang Wu, Xiaoxia Zhang, Jing Sun, Mehmet Izzet Gurelli, Iyab Issam Sakhnini, Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Juan Montojo, Sungwoo Park
  • Publication number: 20210368539
    Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may transmit a random access message (e.g., msgA or msg3) using a modulation and coding scheme (MCS) selected based on the frequency band and subcarrier spacing utilized for the random access procedure. The MCS may depend on the frequency band and a size of the SCS satisfying a threshold. In some cases, a base station may select and indicate the MCS for the UE. Additionally or alternatively, a phase tracking reference signal may be transmitted along with a random access message to correct for phase noise.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 25, 2021
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Xiaoxia Zhang, Tao Luo, Zhifei Fan, Jing Sun, Wooseok Nam, Mehmet Izzet Gurelli
  • Publication number: 20210359817
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit an indication of a capability of the UE to communicate one or more of uplink communications or downlink communications that include data-modulated demodulation reference signals (DMRSs) in which each of one or more resources of a plurality of resources of the uplink communications or the downlink communications carry both at least a portion of a DMRS sequence and data. The UE may transmit an uplink communication or receive a downlink communication that includes the data-modulated DMRSs. Numerous other aspects are provided.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 18, 2021
    Inventors: Wooseok NAM, Juan MONTOJO, Tao LUO, Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL, Zhifei FAN, Xiaoxia ZHANG, Jing SUN, Arumugam CHENDAMARAI KANNAN
  • Publication number: 20210359810
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may map a code block to resources, of a physical shared channel, that are allocated for data-modulated demodulation reference signals (DMRSs) in which each of the resources carries both at least a portion of a DMRS sequence and data. The wireless communication device may transmit a communication, via the physical shared channel, that includes the code block that is mapped to the resources that are allocated for the data-modulated DMRSs. Numerous other aspects are provided.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 18, 2021
    Inventors: Wooseok NAM, Tao LUO, Juan MONTOJO, Jing SUN, Xiaoxia ZHANG, Zhifei FAN, Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL, Sungwoo PARK
  • Publication number: 20210359811
    Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication. In one aspect of the disclosure, a method of wireless communication includes receiving, at a user equipment (UE) from a network entity or a second UE, multiple demodulation reference signals (DMRSs) including a first set of DMRSs allocated to a first DMRS symbol and a first subset of subcarriers and a second set of DMRSs allocated to a second DMRS symbol and a second subset of subcarriers. The method also includes receiving, from the network entity or the second UE, a phase tracking reference signal (PTRS) associated with the multiple DMRSs. The method further includes performing channel estimation based on the multiple DMRSs and a phase tracking process based on the multiple DMRSs and the PTRS. Other aspects and features are also claimed and described.
    Type: Application
    Filed: May 7, 2021
    Publication date: November 18, 2021
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Xiaoxia Zhang, Tao Luo, Jing Sun, Zhifei Fan
  • Publication number: 20210360629
    Abstract: Methods, systems, and devices for wireless communications are described. For example, a user equipment (UE) may transmit, to a base station, an indication of a capability of the UE to switch from monitoring a set of frequency resources according to a first subcarrier spacing (SCS) to monitoring the set of frequency resources according to a second SCS, less than the first SCS. The indication may indicate an amount of time for the UE to switch between SCSs. The UE may receive, from the base station, signaling that indicates a configuration for monitoring the set of frequency resources according to the second SCS (e.g., a configuration for a reduced SCS window). The UE may switch from monitoring the set of frequency resources according to the first SCS to monitoring the set of frequency resources according to the second SCS based on receiving the configuration for monitoring the set of frequency resources.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 18, 2021
    Inventors: Jun Ma, Tao Luo, Qiang Wu, Iyab Issam Sakhnini, Mehmet Izzet Gurelli, Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Xiaoxia Zhang, Jing Sun, Juan Montojo, Peter Gaal
  • Publication number: 20210359807
    Abstract: Aspects described herein relate to a user equipment (UE) determining a reference signal port of multiple configured reference signal ports to use in transmitting a reference signal for a random access message. In one aspect, a configuration indicating multiple reference signal ports to use in transmitting reference signals for a random access message can be transmitted to the UE, as well as an indication of a reference signal port of the multiple reference signal ports to be used in transmitting a reference signal for the random access message.
    Type: Application
    Filed: March 31, 2021
    Publication date: November 18, 2021
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL, Xiaoxia ZHANG, Tao LUO, Jing SUN, Zhifei FAN
  • Publication number: 20210359818
    Abstract: Wireless communication techniques that include PTRS resource density recommendation and selection techniques are discussed. A UE may transmit to a base station a set of phase tracking reference signal (PTRS) resource density recommendations that are determined based, at least in part, on a block error rate (BLER). The base station may transmit to the UE an indication of PTRS resource densities to use for wireless communication of the PTRS based, at least in part, on the BLER associated with the received set of PTRS resource density recommendations. The base station and/or the UE may at least one of receive or transmit a PTRS based, at least in part, on the indicated PTRS resource densities. Other aspects and features are also claimed and described.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 18, 2021
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Xiaoxia Zhang, Zhifei Fan, Jing Sun, Tao Luo
  • Publication number: 20210352698
    Abstract: Methods, systems, and devices for wireless communications are described. In a first example, the user equipment (UE) may receive sidelink control information scheduling resources for a sidelink data transmission spanning a set of tones and indicating a demodulation reference signal (DMRS) pattern. The UE may identify that each tone of the set of tones is configured to carry a DMRS for a symbol of the DMRS pattern and may receive the sidelink data transmission based on the symbol of the DMRS pattern carrying the DMRS for each tone. In a second example, the UE may receive control signaling indicating a configuration for a non-overlapping relationship between a first resource for receiving a DMRS and a second resource for receiving a phase tracking reference signal. The UE may receive the DMRS over the first resource and the phase tracking reference signal over the second resource based on the non-overlapping relationship.
    Type: Application
    Filed: April 29, 2021
    Publication date: November 11, 2021
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Zhifei Fan, Xiaoxia Zhang, Jing Sun, Tao Luo
  • Publication number: 20210352601
    Abstract: Methods, systems, and devices for wireless communications are described. Generally, a user equipment (UE) may identify an energy per resource element (EPRE) ratio between a synchronization signal block (SSB) symbol containing a primary synchronization signal (PSS) and an SSB symbol containing a secondary synchronization signal (SSS), a physical broadcast channel (PBCH), or both, based on an operating band for the UE, a bandwidth of the SSB symbol containing the PSS and the SSB symbol containing the SSB, the PBCH, or both. The EPRE ratio may be based on maximum regulatory equivalent isotropically radiated power (EIRP) limits, maximum regulatory power spectral density (PSD) limits for the band, or both. The EPRE ratios may be different for different SSB symbols, when different SSB symbols have different bandwidths. A base station may configure and transmit, and a UE may receive, the SSB according to the identified EPRE ratio.
    Type: Application
    Filed: May 5, 2021
    Publication date: November 11, 2021
    Inventors: Iyab Issam Sakhnini, Tao Luo, Qiang Wu, Xiaoxia Zhang, Jing Sun, Sungwoo Park, Jun Ma, Mehmet Izzet Gurelli, Ahmed Abdelaziz Ibrahim Abdelaziz Zewail
  • Publication number: 20210352702
    Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify, for a user equipment (UE), a configuration for receiving a set of downlink control information (DCI) messages on one or more layers of a set of layers of a downlink shared channel. The base station may transmit, to the UE, a first DCI message in a downlink control channel, where the first DCI message may schedule resources of the downlink shared channel for the set of piggybacking DCI messages. The UE may receive the first DCI message and identify the configuration for receiving the set of DCI messages on the one or more layers of the downlink shared channel. The UE may receive, from the base station, the set of DCI messages on the one or more layers of the downlink shared channel based on the identified configuration.
    Type: Application
    Filed: April 29, 2021
    Publication date: November 11, 2021
    Inventors: Jun Ma, Xiaoxia Zhang, Tao Luo, Qiang Wu, Juan Montojo, Peter Gaal, Mehmet Izzet Gurelli, Iyab Issam Sakhnini, Ahmed Abdelaziz Ibrahim Abdelaziz Zewail
  • Publication number: 20210352729
    Abstract: A UE, as a part of a RACH communication procedure, may transmit a first sequence within a first set of resources having a first SCS and a second sequence within a second set of resources having a second SCS greater than the first SCS. The second sequence is transmitted with a cyclic prefix greater than inverse of the first SCS divided by a sequence length of the first sequence. The first sequence is a first PRACH preamble. The second sequence may be a second PRACH preamble, an SRS sequence, or DMRS. The UE may repeat the transmission of the first sequence for a first number of times and repeat the transmission of the second sequence for a second number of times independent of the first number.
    Type: Application
    Filed: March 29, 2021
    Publication date: November 11, 2021
    Inventors: Iyab Issam SAKHNINI, Qiang WU, Tao LUO, Xiaoxia ZHANG, Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL, Jun MA, Mehmet Izzet GURELLI, Jing SUN
  • Publication number: 20210345392
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a number of resource elements (REs) associated with downlink control information (DCI) that is to be carried on a physical downlink shared channel (PDSCH) with a shared channel, wherein the number of REs associated with the DCI is determined based at least in part on a scaling factor and a number of REs associated with the shared channel; determine a transport block size (TBS) for the shared channel based at least in part on a remaining number of REs, of the number of REs associated with the shared channel, wherein the remaining number of REs is based at least in part on the number of REs associated with the DCI; and receive the PDSCH based at least in part on the TBS for the shared channel. Numerous other aspects are provided.
    Type: Application
    Filed: April 13, 2021
    Publication date: November 4, 2021
    Inventors: Jun MA, Qiang WU, Mehmet Izzet GURELLI, Iyab Issam SAKHNINI, Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL
  • Publication number: 20210345341
    Abstract: Methods, systems, and devices for wireless communications are described in which control resources may be identified, and a data transmission may be rate-matched around the one or more control channels of multiple UEs or at multiple aggregation levels in the control resources. A user equipment (UE) may identify a search space for a first control channel, and the rate-matching of the data transmission may be performed based on a location of the search space in the control resources. In some cases, a base station may provide a mapping of resources (e.g., a bitmap) within the control resources that are occupied, which may be used for rate-matching.
    Type: Application
    Filed: April 27, 2021
    Publication date: November 4, 2021
    Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, Qiang Wu, Jing Sun, Xiaoxia Zhang, Tao Luo, Iyab Issam Sakhnini, Jun Ma, Mehmet Izzet Gurelli, Juan Montojo, Peter Gaal
  • Publication number: 20210345340
    Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for mitigating timing resolution limitations due to synchronization signal blocks (SSBs) with low subcarrier spacing (SCS). An example method by a user equipment (UE) generally includes detecting a SSB; determining a start time of a control resource set (CORESET) associated with the detected SSB, wherein the start time of the CORESET is aligned with a boundary of a symbol having a larger cyclic prefix (CP) than one or more other symbols in a same half-subframe; and monitoring the CORESET for a physical downlink control channel (PDCCH) transmission.
    Type: Application
    Filed: April 14, 2021
    Publication date: November 4, 2021
    Inventors: Jun MA, Xiaoxia ZHANG, Qiang WU, Iyab Issam SAKHNINI, Jing SUN, Mehmet Izzet GURELLI, Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL
  • Publication number: 20210345387
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station, a scheduling downlink control information (DCI) communication that schedules a physical downlink shared channel (PDSCH) transmission, the scheduling DCI including an indication of a resource allocation for a DCI communication, wherein the resource allocation for the DCI communication includes one or more resources included in a resource allocation for the PDSCH transmission, and receive the PDSCH transmission that includes the DCI communication based at least in part on the indication of the resource allocation for the DCI communication. Numerous other aspects are provided.
    Type: Application
    Filed: February 24, 2021
    Publication date: November 4, 2021
    Inventors: Mehmet Izzet GURELLI, Qiang WU, Iyab Issam SAKHNINI, Jun MA, Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL