公开(公告)号：US20180138962A1

公开(公告)日：2018-05-17

申请号：US15867603

申请日：2018-01-10

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Tao LUO ,  Juergen CEZANNE ,  Sundar SUBRAMANIAN ,  Ashwin SAMPATH ,  Bilal SADIQ ,  Junyi LI

IPC: H04B7/06 ,  H04L5/00 ,  H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04B7/04 ,  H04B7/0408 ,  H04L27/26

CPC classification number: H04B7/0695 ,  H04B7/0408 ,  H04B7/0421 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2692 ,  H04L2027/0095 ,  H04W72/046 ,  H04W74/002 ,  H04W74/006 ,  H04W74/0833 ,  H04W88/08

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：US20180115305A1

公开(公告)日：2018-04-26

申请号：US15476887

申请日：2017-03-31

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Sundar SUBRAMANIAN ,  Junyi LI

IPC: H03J5/24 ,  H03J7/18 ,  H03J7/04 ,  H03J9/00 ,  H04B7/0417 ,  H04N5/50

CPC classification number: H03J5/242 ,  H03J7/047 ,  H03J7/186 ,  H03J9/002 ,  H03J2200/27 ,  H04B7/0417 ,  H04B7/0695 ,  H04B7/088 ,  H04N5/50 ,  H04W74/0816

Abstract: Methods and apparatus that support controlled transmission and directional reception of RTS and/or CTS messages, are described. Controlled transmission may include transmitting a same RTS message multiple times in the same direction and/or transmitting an RTS message with a length that is multiple times longer than a standard RTS message. In an aspect, a receiver may determine spatial directions of a plurality of transmitters including a first transmitter and at least one other transmitter, and may perform a beam sweep in the determined spatial directions for receiving one or more RTS messages. A transmitter may determine that a receiver is to perform a beam sweep in K different spatial directions, and may transmit a same RTS message for a data transmission K times in the same direction or an RTS message with a length approximately K times longer than a standard RTS message, during a duration of the beam sweep.

公开(公告)号：US20180063835A1

公开(公告)日：2018-03-01

申请号：US15461192

申请日：2017-03-16

Applicant: QUALCOMM Incorporated

Inventor： Navid ABEDINI ,  Tao LUO ,  Sundar SUBRAMANIAN ,  Muhammad Nazmul ISLAM ,  Bilal SADIQ ,  Ashwin SAMPATH ,  Juergen CEZANNE ,  Junyi LI ,  Krishna Kiran MUKKAVILLI ,  Durga Prasad MALLADI ,  Ozge KOYMEN ,  Atul MAHARSHI

IPC: H04W72/04 ,  H04W24/02 ,  H04B7/0408

CPC classification number: H04W72/0446 ,  H04B7/0408 ,  H04L5/0007 ,  H04L5/0042 ,  H04L5/0096 ,  H04L27/2602 ,  H04W24/02 ,  H04W72/042

Abstract: In wireless communication systems that support 5G or NR protocols, subframes used for communication may have different numerology options. Numerology options may refer to the characteristics of the subframe such as a tone spacing within each symbol of the subframe, a symbol duration for each symbol of the subframe, a number of symbols in the subframe, etc. A subframe may include a control channel (e.g., the PDCCH) and a data channel (e.g., the PDSCH). In an aspect, the control channel and the data channel within the subframe may have different numerologies. As such, a need exists to signal the numerology of the subframe to users and to determine whether and how to multiplex the control channel and the data channel into the subframe.

公开(公告)号：US20180062720A1

公开(公告)日：2018-03-01

申请号：US15426878

申请日：2017-02-07

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Sundar SUBRAMANIAN ,  Bilal SADIQ ,  Navid ABEDINI ,  Junyi LI

IPC: H04B7/06 ,  H04W72/04 ,  H04W16/28

CPC classification number: H04B7/0617 ,  H04B7/0695 ,  H04L5/0044 ,  H04L5/0053 ,  H04W16/28 ,  H04W72/0406

Abstract: There is a need for a beam tracking technique that reduces the time needed to perform a beamforming procedure and that reduces beam overhead. The apparatus may determine a mapping between a first beam associated with a first type of channel and a second beam associated with a second type of channel. In an aspect, the first type of channel may be different than the second type of channel. The apparatus may receive the first beam associated with the first type of channel and the second beam associated with the second type of channel. In an aspect, the first beam and the second beam may be received from a second device.

公开(公告)号：US20180054276A1

公开(公告)日：2018-02-22

申请号：US15462629

申请日：2017-03-17

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Ozge KOYMEN ,  Navid ABEDINI ,  Sundar SUBRAMANIAN ,  Junyi LI

IPC: H04L1/00 ,  H04L5/00 ,  H04B7/0408

Abstract: The base station that is configured to transmit in a beamformed manner may set different transmission rates for different directions of the beams. During an initial access stage, the base station may set different transmission rates for different transmission directions, and may transmit initial access signals based on the transmission rates in the different transmission directions The apparatus may be a base station. The base station determines transmission rates for a plurality of transmission directions, where each transmission rate is determined for a respective transmission direction of the plurality of transmission directions. The base station transmits at least one initial access signal in each of one or more of the plurality of transmission directions based on a corresponding transmission rate of the transmission rates.

公开(公告)号：US20170359114A1

公开(公告)日：2017-12-14

申请号：US15433738

申请日：2017-02-15

Applicant: QUALCOMM Incorporated

Inventor： Sony AKKARAKARAN ,  Tao LUO ,  Muhammad Nazmul ISLAM ,  Bilal SADIQ

IPC: H04B7/06 ,  H04W74/08 ,  H04L29/12 ,  H04W72/04 ,  H04L5/00 ,  H04W88/02

CPC classification number: H04B7/0697 ,  H04B7/00 ,  H04B7/0695 ,  H04B7/088 ,  H04L5/0048 ,  H04L61/6022 ,  H04W72/0413 ,  H04W74/0833 ,  H04W88/02

Abstract: In a mmW network, a UE and a base station may establish a link using a RACH procedure. Because mmW and other band communications may rely on accurate beamforming to overcome link attention, the UE may need to provide beam information feedback to the base station. In particular, the UE may receive a beam-formed message from the base station during the RACH procedure. The UE may determine beam information based on the received beam-formed message during the RACH procedure. The UE may transmit a message to the base station during the RACH procedure, and the message may include the determined beam information.

公开(公告)号：US20170353256A1

公开(公告)日：2017-12-07

申请号：US15608869

申请日：2017-05-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Navid ABEDINI ,  Tao LUO ,  Sundar SUBRAMANIAN ,  Juergen CEZANNE ,  Ashwin SAMPATH ,  Alexei Yurievitch GOROKHOV ,  Junyi LI ,  Bilal SADIQ

IPC: H04J1/06 ,  H04L25/02 ,  H04B7/216 ,  H01Q3/26 ,  H04L27/26 ,  H04J11/00 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04J1/065 ,  H01Q3/2605 ,  H04B7/0617 ,  H04B7/216 ,  H04J11/003 ,  H04J11/0073 ,  H04J11/0076 ,  H04J2011/0003 ,  H04J2203/0091 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/1469 ,  H04L25/022 ,  H04L27/2602 ,  H04L27/2662

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：US20170353254A1

公开(公告)日：2017-12-07

申请号：US15608799

申请日：2017-05-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Navid ABEDINI ,  Tao LUO ,  Sundar SUBRAMANIAN ,  Juergen CEZANNE ,  Ashwin SAMPATH ,  Alexei Yurievitch GOROKHOV ,  Junyi LI ,  Bilal SADIQ

IPC: H04J1/06 ,  H04L25/02 ,  H04B7/216 ,  H01Q3/26 ,  H04L27/26 ,  H04J11/00 ,  H04B7/06 ,  H04L5/00

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：US20170347380A1

公开(公告)日：2017-11-30

申请号：US15360181

申请日：2016-11-23

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Junyi LI ,  Sundar SUBRAMANIAN ,  Juergen CEZANNE ,  Navid ABEDINI ,  Tao LUO

IPC: H04W74/08 ,  H04W24/10 ,  H04L5/00 ,  H04W56/00 ,  H04W52/24

Abstract: A mechanism is proposed to reduce overhead at the expense of increasing latency for UEs with weak link gain, while the latency for most UEs may remain the same. In one aspect of this disclosure, a UE may determine the number of attempts for transmitting a RACH signal based on one or more of path loss, the transmit power of the UE, the beam correspondence at the UE, or the power of signals received during the synchronization subframe. The UE may transmit the RACH signal in the determined number of attempts. In another aspect of the disclosure, a base station may combine signals of one or more RACH attempts to decode a RACH signal. The base station may inform a UE regarding the number of RACH subframes that the base station uses for decoding the RACH signal through a random access response message.

公开(公告)号：US20170347379A1

公开(公告)日：2017-11-30

申请号：US15360062

申请日：2016-11-23

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Junyi LI ,  Sundar SUBRAMANIAN ,  Juergen CEZANNE ,  Navid ABEDINI ,  Tao LUO

IPC: H04W74/08 ,  H04W24/10 ,  H04L5/00 ,  H04W56/00 ,  H04W52/18 ,  H04B1/04

Abstract: In one aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided to reduce overhead at the expense of increasing latency for UEs with weak link gain, while latency for most UEs may remain the same. The apparatus may be a UE. The apparatus may transmit a RACH preamble to a base station in one or more attempts. The apparatus may receive, through a random access response message from the base station, information including the number of attempts the base station uses to decode the RACH preamble. The apparatus may adjust the transmission power for the connection request message according to the number of attempts the base station uses to decode the RACH preamble. The apparatus may transmit the connection request message using the adjusted transmission power.