公开(公告)号：US20200260485A1

公开(公告)日：2020-08-13

申请号：US16778956

申请日：2020-01-31

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Linhai He ,  Hung Dinh Ly ,  Seyong Park ,  Naga Bhushan ,  Ying Wang ,  Wanshi Chen ,  Joseph Binamira Soriaga

IPC: H04W74/08 ,  H04W72/14 ,  H04W24/08 ,  H04L5/00 ,  H04L1/18 ,  H04W80/02 ,  H04L5/10 ,  H04W76/27

Abstract: Fallback procedures for user equipments (UEs) are described that provide efficient fallback to a four-step random access procedure from a two-step random access procedure. For example, after transmitting a first message of a two-step random access procedure, a UE may start a fallback timer or counter and monitor for a second message of the two-step random access procedure for the duration of the fallback timer or counter. At the expiration of the fallback timer or counter, the UE may fall back to a four-step random access procedure. In some cases, the UE may transmit multiple repetitions of the first message and monitor for responses after transmitting the repetitions or after each repetition. Additionally or alternatively, the base station may transmit an explicit signal to the UE that may signal to the UE to perform a fallback procedure at a beginning or middle of a random access procedure.

公开(公告)号：US20200260478A1

公开(公告)日：2020-08-13

申请号：US16788967

申请日：2020-02-12

Applicant: Qualcomm Incorporated

Inventor： Wei Yang ,  Jing Jiang ,  Linhai He ,  Gabi Sarkis ,  Seyedkianoush Hosseini ,  Joseph Binamira Soriaga ,  Amir Aminzadeh Gohari

IPC: H04W72/14 ,  H04W72/12 ,  H04W72/04 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently determining whether to transmit an uplink transmission scheduled by a semi-static grant or a dynamic uplink transmission scheduled by a dynamic grant when the dynamic uplink transmission conflicts with the uplink transmission scheduled by the semi-static grant. In particular, if a user equipment (UE) determines that a dynamic grant is received within a threshold time before an uplink transmission scheduled by a semi-static grant, the UE may transmit the uplink transmission scheduled by the semi-static grant and refrain from transmitting the dynamic transmission. Alternatively, if the UE determines that a dynamic grant is received in advance of a threshold time before an uplink transmission scheduled by a semi-static grant, the UE may transmit the dynamic transmission and refrain from transmitting the uplink transmission scheduled by the semi-static grant.

公开(公告)号：US20200252896A1

公开(公告)日：2020-08-06

申请号：US16736394

申请日：2020-01-07

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Hung Dinh Ly ,  Linhai He ,  Wanshi Chen

IPC: H04W56/00 ,  H04W74/08

Abstract: In some aspects, a user equipment (UE) determines a transmission gap adjustment (TGA) for a first message (msgA) of a 2 step random access channel (RACH) procedure based on measurement of a reference signal transmitted by a base station as well as the radio resource configuration (RRC) configurations for msgA. In other aspects, a base station transmits a system information block (SIB) or RRC signaling that indicates at least one possible configuration of the TGA, and UEs determine the TGA depending on RRC state. Connected mode UEs having a timing alignment (TA) timer running may determine the TGA based on a previous TA. UEs in other RRC modes determine the TGA based on the possible configuration transmitted in the SIB or RRC signaling. Advantageously, 2 step RACH UEs are able to communicate with the base station without the closed loop TA information provided by a 4 step RACH.

公开(公告)号：US20200252880A1

公开(公告)日：2020-08-06

申请号：US16735318

申请日：2020-01-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Jay Kumar Sundararajan ,  Linhai He ,  Seyong Park ,  Yi Huang ,  Hung Dinh Ly ,  Tingfang Ji ,  Joseph Binamira Soriaga ,  Naga Bhushan

IPC: H04W52/14 ,  H04W74/08 ,  H04W52/24 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04 ,  H04W76/27 ,  H04W52/36 ,  H04W24/08 ,  H04W52/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive system information from a base station indicating at least one configuration rule for power control parameter setting for random access. The UE may measure one or more reference signals and may estimate a path loss of wireless communications between the base station and the UE based on the measured reference signals. The UE may select one or more parameters from one or more sets of parameters indicated in the configuration rule. The UE may select a first transmit power for a preamble of a random access message and a second transmit power for a payload of the random access message, based on the estimated path loss and the configuration rule for power control parameters and power ramping procedures. The UE may transmit the random access message according to the selected first and second transmit powers.

公开(公告)号：US20200015136A1

公开(公告)日：2020-01-09

申请号：US16490699

申请日：2017-04-05

Applicant: Aleksandar DAMNJANOVIC ,  Keiichi KUBOTA ,  Linhai HE ,  Gavin Bernard HORN ,  Peng CHENG ,  Qualcomm Incorporated

Inventor： Aleksandar Damnjanovic ,  Keiichi Kubota ,  Linhai He ,  Gavin Bernard Horn ,  Peng Cheng

IPC: H04W36/10 ,  H04W36/00 ,  H04W36/30 ,  H04W36/36

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may autonomously initiate a handover procedure and select a target base station for the handover procedure. The UE may measure a signal from the source base station or the target base station, or both, and the UE may determine whether specific criteria at both base stations are within a pre-configured range. If the criteria at both base stations are within the pre-configured range, the UE may identify the target base station as a potential candidate for a handover. Accordingly, when the UE determines that radio conditions with the source base station are deteriorating (or fall below a threshold), the UE may initiate a handover to the target base station autonomously and without specific direction from the source base station.

公开(公告)号：US20140226550A1

公开(公告)日：2014-08-14

申请号：US14258762

申请日：2014-04-22

Applicant: Qualcomm Incorporated

Inventor： Linhai He ,  Akbar Rashid Ahmed Attar ,  Christopher Gerard Lott ,  Donna Ghosh

IPC: H04W52/02

CPC classification number: H04W52/0241 ,  H04W52/0232 ,  H04W52/0258 ,  H04W88/08 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/142

Abstract: A wireless communications power saving method and apparatus is provided. The method includes establishing a circular buffer configured to maintain a number of most recently encountered frame delay times and waiting a frame delay time after receiving a further frame before the station enters a power save state. Frame delay time is a period equal to a largest most recently encountered frame delay period in the circular buffer. The method further determines, at a station, a dormancy time based on a number of data frames received since the station transitioned from an inactive mode to an active mode, a packet transmission rate, and a data frame time interval representing time between data frames received at the station, and causes the station to switch to a further inactive mode if a next packet is not received within the dormancy time after receipt of a previous packet.

Abstract translation: 提供一种无线通信省电方法和装置。 该方法包括建立循环缓冲器，该循环缓冲器被配置为保持最近遇到的帧延迟时间的数量，并且在站进入省电状态之前在接收到另一帧之后等待帧延迟时间。 帧延迟时间是等于循环缓冲器中最大遇到的最大帧延迟周期的周期。 该方法还在一个站点基于从站从非活动模式转换到活动模式，分组传输速率和表示接收到的数据帧之间的时间的数据帧时间间隔，接收到的数据帧数，在一个站处确定休眠时间 并且如果在接收到先前分组之后的休眠时间内没有接收到下一分组，则使得站切换到另一非活动模式。

公开(公告)号：US20250133561A1

公开(公告)日：2025-04-24

申请号：US18688287

申请日：2021-10-09

Applicant: QUALCOMM INCORPORATED

Inventor： Jing Lei ,  Ruiming Zheng ,  Linhai He

IPC: H04W72/1268 ,  H04W24/08 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive, from a base station, control signaling identifying a first set of resources for data transmissions and a second set of resources for uplink control information (UCI) transmission by the UE when the UE is in an inactive state or an idle state. The UE may generate, when the UE is in one of the inactive state or the idle state, a UCI message based on the second set of resources. The UE may then transmit, to the base station when the UE in the one of the inactive state or the idle state, a data message on at least a portion of the first set of resources and the UCI message on the second set of resources.

公开(公告)号：US12278496B2

公开(公告)日：2025-04-15

申请号：US17836895

申请日：2022-06-09

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Elshafie ,  Abdelrahman Mohamed Ahmed Mohamed Ibrahim ,  Ahmed Attia Abotabl ,  Muhammad Sayed Khairy Abdelghaffar ,  Linhai He ,  Yuchul Kim ,  Hwan Joon Kwon ,  Krishna Kiran Mukkavilli ,  Peter Gaal ,  Tingfang Ji ,  Wanshi Chen

IPC: H02J50/00 ,  H02J50/80 ,  H04B7/02 ,  H04B7/0408 ,  H04B17/10 ,  H04B17/20 ,  H04W16/28 ,  H04W24/10 ,  H04W52/02 ,  H04W72/044 ,  H04W72/1263 ,  H04W72/20 ,  H04W84/02 ,  H04W88/02 ,  H04W88/08 ,  H04W92/02 ,  H04W92/10 ,  H04W92/18

Abstract: Methods, systems, and devices for wireless communications are described. For a set of scheduled transmission instances of a data communication, a transmitting network node may determine a first spatial filter to apply for a first subset of the scheduled transmission instances configured to provide the data communication and a second spatial filter to apply for a second subset of the scheduled transmission instances configured to allow energy harvesting at an energy harvesting device. In some cases, the transmitting network node may indicate a first quasi co-location (QCL) relation to use for the first subset of the scheduled transmission instances configured to provide the data communication to the network node receiving the data transmissions, and the transmitting network node may indicate a second QCL relation to use for the second subset of the scheduled transmission instances configured to allow energy harvesting to the energy harvesting device.

公开(公告)号：US12267823B2

公开(公告)日：2025-04-01

申请号：US18398473

申请日：2023-12-28

Applicant: QUALCOMM Incorporated

Inventor： Linhai He ,  Gavin Bernard Horn ,  Miguel Griot ,  Peter Gaal

IPC: H04W72/04 ,  H04W56/00 ,  H04W72/044 ,  H04W72/30 ,  H04W74/0833

Abstract: Wireless communication systems and methods related to enhancing initial access for multi-beam operations. A user equipment (UE) selects a synchronization signal block (SSB) that corresponds to a beam and has a reference signal received power (RSRP) above a threshold. The UE receives a system information block (SIB) that includes a plurality of SSB and beam-specific system information pairs. The UE selects beam-specific system information by matching the selected SSB to one of SSBs in the multiple SSB and beam-specific system information pairs. The UE establishes a connection with a base station (BS) using the beam-specific system information.

公开(公告)号：US12262420B2

公开(公告)日：2025-03-25

申请号：US17754465

申请日：2019-10-02

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Muhammad Nazmul Islam ,  Linhai He ,  Amir Aminzadeh Gohari ,  Yuanning Yu ,  Enoch Shiao-Kuang Lu ,  Yi Huang ,  Ruiming Zheng ,  Wanshi Chen

IPC: H04W74/08 ,  H04W74/00 ,  H04W74/0833

Abstract: Wireless communications systems and methods related to the timing arrangements and the transmission gap configurations in 2-step random access channel (RACH) procedures to improve system latency and reliability of a RACH HARQ process are provided. The UE transmits a first message including a random access preamble and a payload, and then monitors for a second message in response to the first message during a random access response (RAR) window. In response to determining that no second message is received by the UE from the BS or a back off indicator is received within the RAR window, the UE re-transmits the preamble and payload of the first message after the RAR window lapses. In response to determining if the second message received within the RAR window carries a FallbackRAR or SuccessRAR, the UE then determines to re-transmit the payload of the first message based on the FallbackRAR, or to transmit an acknowledgement message based on the SuccessRAR.