公开(公告)号：US10693605B2

公开(公告)日：2020-06-23

申请号：US15690820

申请日：2017-08-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Bilal Sadiq ,  Sundar Subramanian ,  Junyi Li

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/00 ,  H04W72/04

Abstract: A RACH preamble is transmitted from a UE using multiple antenna ports. A UE splits a data stream containing a RACH preamble into multiple streams corresponding to a same number of antenna ports of the UE. The UE multiplexes the copies of the RACH preamble according to a multiplexing scheme that enables a receiving eNB to discern the different channels used to transmit the signal from the different antenna ports. A RACH procedure is further accomplished in two steps instead of four by the UE then splitting a RACH payload to the same number of streams and multiplexing the RACH payload for transmission to the eNB. The eNB receives both transmissions, and may use the RACH preamble as a reference signal, and responds with a combined message with control information, random access response, and contention resolution information.

公开(公告)号：US10674540B2

公开(公告)日：2020-06-02

申请号：US16184825

申请日：2018-11-08

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Junyi Li ,  Sundar Subramanian ,  Jung Ryu

IPC: H04W74/08 ,  H04W76/10 ,  H04W24/08

Abstract: Techniques for procedures using request to send/clear to send (RTS/CTS) procedures and multiple timers are described. A RTS/CTS procedure using multiple timers may use a first timer and a second timer. The first timer may be associated with a duration to transmit and receive a request to send (RTS) message and a clear to send (CTS) message. The second timer may be associated with a duration to transmit a data message. A network device may transmit a RTS message to request communication resources to transmit data. If the CTS message is not received prior to the expiration of the first timer, neighboring network devices may determine that the communication resources were not allocated and may attempt to request the newly available resources. If a CTS message is received, the network device may communicate the second timer data to the neighboring network devices in a variety of ways.

公开(公告)号：US10609661B2

公开(公告)日：2020-03-31

申请号：US15968598

申请日：2018-05-01

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Muhammad Nazmul Islam ,  Sundar Subramanian ,  Bilal Sadiq ,  Tao Luo

IPC: H04W56/00 ,  H04W72/04 ,  H04L5/00 ,  H04L1/00 ,  H04W48/12 ,  H04L27/26

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for conveying timing information that changes across a transmission time interval (TTI) in which multiple redundancy versions of a physical broadcast channel (PBCH) are transmitted.

公开(公告)号：US10560910B2

公开(公告)日：2020-02-11

申请号：US15926884

申请日：2018-03-20

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Juergen Cezanne ,  Shrinivas Kudekar ,  Navid Abedini ,  Muhammad Nazmul Islam

IPC: H04W56/00 ,  H04W72/00 ,  H04L5/00 ,  H04L1/00

Abstract: An apparatus is provided for wireless communication at a base station with improved PBCH construction and decoding. The base station apparatus constructs a PBCH payload, wherein a bit location is selected for encoding a plurality of bits of the PBCH based on an estimated reliability for the corresponding bits location wherein the plurality of bits comprises frozen bits, unknown bits that are unknown to a user equipment, and potentially known bits that are potentially known by the user equipment. The apparatus transmits the PBCH payload in at least one of a plurality of SS blocks. A UE receiving the PBCH decodes the PBCH based on a successive decoding order. The successive decoding order may be based on an estimated reliability for the corresponding bits, e.g., in which potentially known bits are decoded prior to unknown bits.

公开(公告)号：US10548100B2

公开(公告)日：2020-01-28

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: H04W16/28 ,  H04W56/00 ,  H04B7/0408 ,  H04L1/00 ,  H04L5/00 ,  H04B7/06

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：US10455547B2

公开(公告)日：2019-10-22

申请号：US15708548

申请日：2017-09-19

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Karl Georg Hampel

IPC: H04W68/02 ,  H04W56/00 ,  H04B7/0417 ,  H04W16/28 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04W88/08 ,  H04W88/02

Abstract: A method for wireless communication at a user equipment (UE) includes receiving, from a base station, an indication of uplink transmission resources allocated for a paging response to a paging indication, receiving the paging indication from the base station, and transmitting, to the base station, the paging response to the received paging indication. The paging response is transmitted on at least one of the uplink transmission resources allocated for the paging response. A method for wireless communication at a base station includes identifying uplink transmission resources for paging responses, transmitting an indication of the uplink transmission resources allocated for paging responses, transmitting a paging indication to at least one UE, and receiving a paging response from one or more UEs using a receive beam sweep. The paging response is received on an associated beam on at least one of the uplink transmission resources allocated for paging responses.

公开(公告)号：US10448380B2

公开(公告)日：2019-10-15

申请号：US15420204

申请日：2017-01-31

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Tingfang Ji ,  Jing Jiang ,  Junyi Li

IPC: H04W72/04 ,  H04L5/14 ,  H04L5/00 ,  H04W76/27 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication provide for split symbol control by varying tone spacing and symbol duration for control channels in a subframe. The control symbols may be transmitted at various locations within the subframe and may be transmitted to different mobile devices. In some examples, multiple control symbols may be transmitted in a subframe to multiple mobile devices depending on the capabilities of each of the multiple mobile devices.

公开(公告)号：US20190312708A1

公开(公告)日：2019-10-10

申请号：US16379232

申请日：2019-04-09

Applicant: QUALCOMM Incorporated

Inventor： Tianyang Bai ,  Makesh Pravin John Wilson ,  Kiran Venugopal ,  Muhammad Nazmul Islam ,  Gabi Sarkis ,  Joseph Binamira Soriaga ,  Tao Luo

IPC: H04L5/00 ,  H04W68/02 ,  H04W72/04

Abstract: Wireless devices may employ techniques for indicating alternative modulation coding schemes (MCSs) (e.g., MCS values or MCS indices not associated with a default list or default MCS table). That is, communications (e.g., such as physical downlink control channel (PDCCH) transmissions carrying downlink control information (DCI), physical downlink shared channel (PDSCH) transmissions carrying uplink grants, etc.) may include information (e.g., in MCS fields and reserved fields) that indicate alternative MCSs for subsequent communications. For example, random access radio network temporary identifier (RA-RNTI) scrambled DCI, random access response (RAR) messages, etc., may indicate an alternative MCS for subsequent messages in a random access procedure (e.g., for a RAR, an RRC connection request, etc.). The alternative MCS may be conveyed by indicating information such as MCS scaling factors, alternative MCS table IDs, MCS indices associated with the alternative MCS table, or some combination thereof.

公开(公告)号：US20190305923A1

公开(公告)日：2019-10-03

申请号：US16268791

申请日：2019-02-06

Applicant: QUALCOMM Incorporated

Inventor： Jianghong Luo ,  Navid Abedini ,  Bilal Sadiq ,  Muhammad Nazmul Islam ,  Junyi Li ,  Karl Georg Hampel ,  Hong Cheng

IPC: H04L5/16 ,  H04L5/14 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described that provide for resource allocation in an integrated access and backhaul (IAB) network. A relay node in an IAB network may be assigned a first resource partition that is different from a second resource partition for the child and parent nodes. Based on a resource configuration (e.g., for a slot) of the second resource partition, the relay node may opportunistically utilize the second resource partition for communications. For instance, the relay node may determine a direction table based on the resource configurations of the child and parent nodes, which may be used to perform uplink or downlink communications in one or more symbols of the second resource partition. The relay node may also identify flexible symbols as free or non-free when determining the direction table.

公开(公告)号：US20190268118A1

公开(公告)日：2019-08-29

申请号：US16281329

申请日：2019-02-21

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Juergen Cezanne ,  Muhammad Nazmul Islam ,  Navid Abedini ,  Xiao Feng Wang ,  Makesh Pravin John Wilson ,  Sony Akkarakaran ,  Alexandros Manolakos

IPC: H04L5/00 ,  H04W74/08 ,  H04L12/24 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device, such as a user equipment and/or a base station, may determine that an active transmit beam has changed from a first transmit beam to a second transmit beam, the second transmit beam being different from the first transmit beam. The wireless device may identify a reference signal identifier that is associated with the second transmit beam. The wireless device may update, based at least in part on the identifying, a channel state information (CSI) resource setting to include the reference signal identifier, wherein the CSI resource setting is associated with the active transmit beam.