公开(公告)号：US11497019B2

公开(公告)日：2022-11-08

申请号：US16447606

申请日：2019-06-20

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Tingfang Ji ,  Durga Prasad Malladi

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26

Abstract: Methods and apparatuses for adaptive subcarrier spacing in wireless communication networks are described. For example, the described aspects include transmitting, from the UE to a network entity, a first PRACH transmission with a first subcarrier spacing; determining, by the UE, that the first PRACH transmission to the network entity is not successful; and transmitting, from the UE, a second PRACH transmission with a second subcarrier spacing in response to determining that the first PRACH transmission is not successful, wherein the first subcarrier spacing is different from the second subcarrier spacing.

公开(公告)号：US11387927B2

公开(公告)日：2022-07-12

申请号：US16680184

申请日：2019-11-11

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Haitong Sun

IPC: H04J11/00 ,  H04J1/14 ,  H04J1/06 ,  H04L5/00 ,  H04L27/26 ,  H04W56/00 ,  H04W72/04

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may identify a synchronization signal (SS) block index associated with a SS block; scramble a physical broadcast channel (PBCH), associated with the SS block, based at least in part on the SS block index; and transmit the SS block including a tertiary synchronization signal (TSS) and the PBCH, wherein the TSS includes information that identifies the SS block index associated with the SS block, and wherein the TSS is frequency division multiplexed with the PBCH in two or more orthogonal frequency-division multiplexed (OFDM) symbols of the SS block. Numerous other aspects are provided.

公开(公告)号：US11197182B2

公开(公告)日：2021-12-07

申请号：US15954569

申请日：2018-04-16

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Hung Ly ,  Tingfang Ji ,  Haitong Sun

IPC: H04W24/10 ,  H04B7/06 ,  H04W84/04

Abstract: A method of wireless communications at a user equipment (UE) includes receiving, from a serving cell associated with a wireless network, a radio resource management (RRM) mode indicator that indicates a set of one or more beams for which cell measurement and reporting is to be performed by the UE; performing at least one cell measurement on at least one synchronization signal (SS) block received from at least one neighboring cell; determining, based at least in part on the RRM mode indicator, whether to decode a physical broadcast channel (PBCH) received in each SS block of the at least one SS block; and transmitting a cell measurement report, the cell measurement report based at least in part on the at least one cell measurement, the cell measurement report selectively including at least one beam index based at least in part on whether the PBCH is decoded.

公开(公告)号：US11153909B2

公开(公告)日：2021-10-19

申请号：US15604285

申请日：2017-05-24

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Joseph Binamira Soriaga

IPC: H04W74/08 ,  H04L1/18 ,  H04L1/16 ,  H04W52/14 ,  H04L1/00 ,  H04W52/50 ,  H04W52/24 ,  H04W52/48 ,  H04W52/10 ,  H04W84/04

Abstract: Aspects of the present disclosure provide a two-stage uplink transmission scheme. As described herein, a UE may transmit a first portion of an uplink signal to an AN, receive a first acknowledgment responsive to the first portion, and after receiving the first acknowledgement, transmit the first portion and a second portion of the uplink signal to the AN. The AN may receive a first portion of an uplink signal from UE, transmit a first acknowledgment responsive to the first portion, and after transmitting the acknowledgement, receive the first portion and a second portion of the uplink signal from the UE.

公开(公告)号：US10972992B2

公开(公告)日：2021-04-06

申请号：US16593641

申请日：2019-10-04

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Haitong Sun ,  Tingfang Ji ,  Joseph Binamira Soriaga

IPC: H04W56/00 ,  H04W36/00 ,  H04W4/02 ,  H04W8/08 ,  H04W24/10 ,  H04W52/04 ,  H04W72/04 ,  H04W88/02 ,  H04L5/00

Abstract: Various aspects relate to flexible mobility for a user equipment (UE) based on supported mobility modes of a network and UE conditions. A network may support one or more of a downlink based mobility mode, an uplink based mobility mode, or a hybrid mobility mode for a connectivity state of a UE. A UE may determine a serving cell based on at least one downlink signal. The UE may determine based on the at least one downlink signal, a set of supported mobility modes for the serving cell, including at least one of a downlink based mobility mode, an uplink based mobility mode, or a hybrid based mobility mode. The UE may follow a mobility procedure based on a selected mobility mode from the determined set of supported mobility modes. Other aspects relate to a base station transmitting synchronization signals to support flexible mobility.

公开(公告)号：US10750457B2

公开(公告)日：2020-08-18

申请号：US15490830

申请日：2017-04-18

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Wanshi Chen ,  Tingfang Ji ,  Peter Gaal ,  Hung Ly

IPC: H04L12/50 ,  H04W56/00 ,  H04L5/00 ,  H04W72/04

Abstract: Wireless communication devices are adapted to facilitate multiple synchronization channels within a single carrier. In some examples, an apparatus for wireless communication may transmit a first synchronization channel at a first frequency in a carrier bandwidth, and at least one additional synchronization channel at a different respective frequency in the carrier bandwidth. In some examples, an apparatus for wireless communication may scan a carrier bandwidth for one of a plurality of synchronization channels conveyed at different respective frequencies in the carrier bandwidth, and discover a synchronization channel from among the plurality of synchronization channels. The apparatus may further receive information conveyed over the discovered synchronization channel and utilize the information to access the carrier. Other aspects, embodiments, and features are also included.

公开(公告)号：US10666406B2

公开(公告)日：2020-05-26

申请号：US15956211

申请日：2018-04-18

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Tao Luo ,  Heechoon Lee

IPC: H04L5/00 ,  H04L27/26 ,  H04W56/00 ,  H04W72/04

Abstract: The present disclosure relates to signaling information in physical broadcast channel (PBCH) demodulation reference signals (DMRS). In one example, a network entity may transmit the signaling information carried by a DMRS in one or more resource elements of physical broadcast channel (PBCH) symbols within a bandwidth of a primary synchronization signal and a secondary synchronization signal of a synchronization signal block. In another example, a user equipment (UE) may receive the signaling information carried by the DMRS within one or more resource elements of PBCH symbols within a bandwidth of a primary synchronization signal and a secondary synchronization signal of a synchronization signal block on a broadcast channel from the network entity.

公开(公告)号：US10568130B2

公开(公告)日：2020-02-18

申请号：US15707659

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hung Ly ,  Haitong Sun ,  Hao Xu

IPC: H04W74/00 ,  H04L1/08 ,  H04L1/00 ,  H04W28/18 ,  H04W72/04 ,  H04W74/08 ,  H04L5/00

Abstract: A user equipment (UE) may perform a random access procedure to synchronize with a network for uplink and/or downlink communication. The UE may transmit a first type of random access transmission that includes transmitting a preamble or a second type of random access transmission that includes transmitting a preamble and a random access message. The second type may result in reduced delay but may have lesser SNR tolerance than the first type. In some aspects, the UE may determine whether to transmit the first type or the second type, and may transmit the first type or the second type in a random access channel portion of a slot. The random access channel portion of the slot may be occupied by portions of either the first type of random access transmission or the second type of random access transmission, thereby enabling flexible utilization of multiple types of random access procedure.

公开(公告)号：US10485023B2

公开(公告)日：2019-11-19

申请号：US15707442

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Kambiz Azarian Yazdi ,  Haitong Sun ,  Tingfang Ji ,  Wanshi Chen ,  Hao Xu ,  Heechoon Lee ,  Hung Ly

IPC: H04W74/00 ,  H04W72/12 ,  H04W74/08

Abstract: Certain aspects of the present disclosure provide techniques for payload-less physical uplink measurement indication channel (PUMICH) design for uplink based mobility. According to certain aspects, a method of wireless communication by a base station (BS) is provided. The method generally includes selecting a first set of random access procedure (RACH) sequences from a second set of RACH sequences, wherein the second set of RACH sequences comprises a pruned set of RACH sequences, and wherein at least some of the first set of RACH sequences selected for a first user equipment (UE) is also available for selection for a second UE, and transmitting the selected first set of RACH sequences to a UE in response to a request from the UE.

公开(公告)号：US10469229B2

公开(公告)日：2019-11-05

申请号：US16030453

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Tao Luo ,  Hao Xu

IPC: H04L5/00 ,  H04L5/14 ,  H04W72/04

Abstract: Techniques for signaling dynamic control region for PRACH transmission are described. In an aspect, the disclosure describes a method for receiving, at a user equipment (UE), an indication of a number of control symbols that the UE is to assume when transmitting physical random access channel (PRACH), and transmitting, by the UE, the PRACH over one or more slots based on the number of control symbols. In another aspect, the disclosure describes a method for generating, at a network device, an indication of a number of control symbols that a UE is to assume when transmitting PRACH, transmitting, by the network device, the indication to the UE. A UE and network device configuration as well as apparatuses and computer-readable medium related to these methods are also described.