公开(公告)号：CA3047143A1

公开(公告)日：2018-07-26

申请号：CA3047143

申请日：2018-01-11

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  CEZANNE JUERGEN ,  SUBRAMANIAN SUNDAR ,  SAMPATH ASHWIN ,  SADIQ BILAL ,  LI JUNYI

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/08 ,  H04W74/08

Abstract: One apparatus may determine a first set of parameters associated with a first RACH procedure, the first set of parameters being associated with beam failure recovery for a first UE in a cell. The apparatus may send the first set of parameters to the first UE. Another apparatus may receive the first set of parameters associated with a first RACH procedure. The other apparatus may receive, from the first apparatus, a second set of parameters associated with a second RACH procedure. The other apparatus may generate a RACH preamble based on the first set of parameters or based on the second set of parameters. The other apparatus may send, to the first apparatus, the generated RACH preamble.

公开(公告)号：CA3021997A1

公开(公告)日：2017-12-14

申请号：CA3021997

申请日：2017-05-15

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  AKKARAKARAN SONY ,  SADIQ BILAL ,  LI JUNYI

IPC: H04B7/06

Abstract: In a process of beam change, the base station transmits a beam change instruction to a user equipment to confirm a change from a current beam to another beam. The base station determines to change from a first beam to a second beam. The base station generates a beam change instruction to indicate the determination to change from the first beam to the second beam. The base station transmits, to a UE, the beam change instruction in a downlink control information (DCI). The base station determines whether or not the beam change instruction is detected by the UE.

公开(公告)号：CA3021672A1

公开(公告)日：2017-12-07

申请号：CA3021672

申请日：2017-05-15

Applicant: QUALCOMM INC

Inventor： ABEDINI NAVID ,  SUBRAMANIAN SUNDAR ,  LI JUNYI ,  ISLAM MUHAMMAD NAZMUL ,  CEZANNE JUERGEN ,  SADIQ BILAL ,  LUO TAO

IPC: H04L27/26 ,  H04J11/00

Abstract: Methods, systems, and devices for wireless communication are described. A wireless communications system operating in millimeter wave (mmW) spectrum may utilize synchronization signals for beam tracking. A synchronization signal (e.g., primary synchronization signals (PSS), secondary synchronization signals (SSS), etc.), beam reference signal, and/or control signal may be designed to facilitate beam tracking. A synchronization signal structure based on a repeated sequence in the time domain may facilitate searching for different beams in a timely manner. In some cases, the repeated synchronization signal structure may be achieved by using a larger tone spacing, and hence having shorter symbol duration and repeating the short symbols in the time domain. The repeated structure may be further used to encode additional information (e.g., facilitated by the resulting additional degrees of freedom). Additionally or alternatively, a synchronization signal (e.g., SSS) may be discrete Fourier transform (DFT) pre-coded to achieve better peak-to-average-power-ratio (PAPR).

公开(公告)号：CA3021220A1

公开(公告)日：2017-12-07

申请号：CA3021220

申请日：2017-05-31

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  ABEDINI NAVID ,  LUO TAO ,  SUBRAMANIAN SUNDAR ,  CEZANNE JUERGEN ,  SAMPATH ASHWIN ,  GOROKHOV ALEXEI YURIEVITCH ,  LI JUNYI ,  SADIQ BILAL

IPC: H04B7/26 ,  H04W56/00

Abstract: The apparatus may be a base station. The apparatus processes a plurality of synchronization signals by performing time-division multiplexing (TDM) of at least one of a plurality of first synchronization signals of different types and at least one of the plurality of second synchronization signals of different types, the plurality of synchronization signals including the plurality of first synchronization signals and the plurality of second synchronization signals. The apparatus transmits the processed synchronization signals to a user equipment (UE).

公开(公告)号：CA3021219A1

公开(公告)日：2017-12-07

申请号：CA3021219

申请日：2017-05-31

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  ABEDINI NAVID ,  LUO TAO ,  SUBRAMANIAN SUNDAR ,  CEZANNE JUERGEN ,  SAMPATH ASHWIN ,  GOROKHOV ALEXEI YURIEVITCH ,  LI JUNYI ,  SADIQ BILAL

IPC: H04L5/00 ,  H04L27/26

Abstract: The apparatus may be a base station. The apparatus sets a first numerology for at least one synchronization signal of one or more synchronization signals to be different from a second numerology for at least one data signal of one or more data signals. The apparatus transmits the one or more synchronization signals to a user equipment (UE) based on the first numerology. The apparatus transmits the one or more data signals to the UE based on the second numerology.

公开(公告)号：CA3016605A1

公开(公告)日：2017-10-19

申请号：CA3016605

申请日：2017-03-31

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  CEZANNE JUERGEN ,  SUBRAMANIAN SUNDAR ,  SAMPATH ASHWIN ,  SADIQ BILAL ,  LI JUNYI

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/08

Abstract: A first apparatus may transmit, to a user equipment (UE), on a control channel, one or more indications of one or more beam indexes corresponding to one or more beams. The first apparatus may transmit, to the UE, one or more reference signals through the one or more beams corresponding to the one or more beam indexes. The reference signals may be used by the UE to select a best subarray and/or receive combiner for communication with the first apparatus.

公开(公告)号：CA3016624A1

公开(公告)日：2017-10-12

申请号：CA3016624

申请日：2017-03-06

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  SUBRAMANIAN SUNDAR ,  LUO TAO ,  CEZANNE JUERGEN ,  SADIQ BILAL ,  LI JUNYI

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a sounding reference signal (SRS) configuration for user equipment (UE). The base station may transmit an SRS grant message to a UE indicating the SRS configuration. An indication of SRS parameters may be included in the SRS grant message, and may include the SRS parameters or a location of the SRS parameters. That is, SRS parameters may be transmitted in a control channel with the SRS grant message or may be separately sent in a data channel as indicated by the indication of SRS parameters. In some cases, SRS parameters may be determined based on previously received UE feedback regarding channel conditions or power limitations. Alternatively, the base station may make its own environment measurements or assign SRS parameters autonomously. The UE may signal SRS transmissions to the base station according to the SRS grant message.

公开(公告)号：CA3016608A1

公开(公告)日：2017-10-12

申请号：CA3016608

申请日：2017-04-01

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  SUBRAMANIAN SUNDAR ,  CEZANNE JUERGEN ,  SADIQ BILAL ,  ABEDINI NAVID ,  LI JUNYI

IPC: H04L5/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for phase noise estimation in data symbols for millimeter wave (mmW). A method for wireless communications by a transmitting device is provided. The method generally includes identifying a phase noise metric associated with at least one receiving device; determining a phase noise pilot configuration based, at least in part, on the identified phase noise metric; and providing an indication of the phase noise pilot configuration to the at least one receiving device. A receiving device can receive the phase noise pilots in accordance with the configuration and determine phase noise for a data symbol based on the received phase noise pilots.

公开(公告)号：CA3015533A1

公开(公告)日：2017-10-05

申请号：CA3015533

申请日：2017-03-29

Applicant: QUALCOMM INC

Inventor： CEZANNE JUERGEN ,  SUBRAMANIAN SUNDAR ,  ISLAM MUHAMMAD NAZMUL ,  SADIQ BILAL ,  SAMPATH ASHWIN ,  LI JUNYI

IPC: H04B7/06 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a subframe that includes physical broadcast channel (PBCH) signals interspersed within beam reference signals, where the subframe may be a synchronization subframe including one or more synchronization signals. In some cases, the beam reference signals from different antenna ports may be code division multiplexed or frequency division multiplexed over multiple frequency tones. A user equipment (UE) may use the beam reference signals to generate channel estimates for the PBCH signals. In some cases, orthogonal cover codes for code division multiplexed signals may be selected to facilitate generation of channel estimates for PBCH signals transmitted using nearby frequency tones.

公开(公告)号：CA2976700A1

公开(公告)日：2016-10-06

申请号：CA2976700

申请日：2016-03-07

Applicant: QUALCOMM INC

Inventor： ZISIMOPOULOS HARIS ,  CHENG HONG ,  BAGHEL SUDHIR KUMAR ,  VANDERVEEN MICHAELA ,  PATIL SHAILESH ,  TAVILDAR SAURABHA RANGRAO ,  GULATI KAPIL ,  SADIQ BILAL

IPC: H04W40/22 ,  H04W48/16 ,  H04W88/04

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes configuring a relay selection rule; receiving at least one discovery message from each of a plurality of proximity services (ProSe) relay candidates providing access to a network; evaluating the received discovery messages with respect to the relay selection rule; selecting a first ProSe relay candidate from the plurality of ProSe relay candidates based at least in part on the evaluating; and connecting to the network via the first ProSe relay candidate. A method for wireless communication at a ProSe relay candidate includes receiving, from a network, a ProSe Relay Indication (PRI); broadcasting at least one discovery message that includes the PRI; and receiving a relay connection request from a UE based at least in part on a compliance of the at least one discovery message with a relay selection rule of the UE.