公开(公告)号：US20230217396A1

公开(公告)日：2023-07-06

申请号：US18051339

申请日：2022-10-31

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W74/08

CPC classification number: H04W56/0045 ,  H04W74/0833

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：US11690087B2

公开(公告)日：2023-06-27

申请号：US17084302

申请日：2020-10-29

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Hung Dinh Ly ,  Peter Pui Lok Ang ,  Muhammad Sayed Khairy Abdelghaffar ,  June Namgoong

IPC: H04W72/04 ,  H04L5/14 ,  H04W72/53 ,  H04W72/0453 ,  H04W72/0446 ,  H04W72/23

CPC classification number: H04W72/53 ,  H04L5/14 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/23

Abstract: Generally, the described techniques provide for duplex mode configuration for control information (e.g., duplex mode configuration for communication of downlink control information). For example, duplex modes may be defined (e.g., as full duplex (FD) capable, FD only, half duplex (HD) only, etc.), and such duplex modes may be configured for control resource sets (CORESETs), search space (SS) sets, or both. In some examples, duplex modes configured for a CORESET/SS set may depend on the priority of information conveyed via the CORESET/SS set. For example, a CORESET/SS set for high priority or critical control information may be configured with a HD mode to avoid FD self-interference, while CORESET/SS set for other control information may be configured with a FD mode to improve spectrum efficiency. Techniques for resolving conflicting duplex mode configurations (e.g., when a HD mode is configured for a SS set within a CORESET configured with FD) are also described.

公开(公告)号：US20230199649A1

公开(公告)日：2023-06-22

申请号：US17555150

申请日：2021-12-17

Applicant: QUALCOMM Incorporated

Inventor： Yongjun Kwak ,  Hung Dinh Ly ,  Ahmed Attia Abotabl ,  Hwan Joon Kwon

IPC: H04W52/02 ,  H04W56/00 ,  H04W74/08

CPC classification number: H04W52/0229 ,  H04W56/001 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communications are described. Base stations may reduce energy consumption by minimizing the use of periodic signals such as the system information block one (SIB1), which a user equipment (UE) may use to perform a random access channel (RACH) procedure with a base station. A UE may transmit a wake-up signal to the base station requesting an SIB1. The base station may transmit a synchronization signal block (SSB) that indicates that the base station is not transmitting an SIB1, and the UE may transmit the cell wake-up signal in response. A base station may refrain from periodically transmitting SSBs. A UE may determine that it is within range of a base station and that it has not received an SSB. The UE may transmit a wake-up signal to the base station, and the base station may transmit an SSB and an SIB1 to the UE.

公开(公告)号：US11664961B2

公开(公告)日：2023-05-30

申请号：US16949305

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh Ly ,  Peter Pui Lok Ang ,  Tingfang Ji

IPC: H04L5/14 ,  H04L7/033 ,  H04W72/0453 ,  H04W74/08 ,  H04L27/26 ,  H04W24/08 ,  H04L5/00

CPC classification number: H04L5/14 ,  H04L5/0048 ,  H04L7/0331 ,  H04L27/2605 ,  H04W24/08 ,  H04W72/0453 ,  H04W74/0825 ,  H04W74/0833

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a guard period associated with switching from a first communication mode to a second communication mode. The UE may be operating in a half-duplex frequency division duplexing mode of operation. The guard period may be determined based at least in part on at least one of: a number of phased locked loops to be used for the first communication mode and the second communication mode, and a particular subcarrier spacing associated with the UE. The UE may switch from the first communication mode to the second communication mode based at least in part on the guard period. Numerous other aspects are provided.

公开(公告)号：US11659575B2

公开(公告)日：2023-05-23

申请号：US17163277

申请日：2021-01-29

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh Ly ,  Gokul Sridharan

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04W72/0446

CPC classification number: H04W72/0493 ,  H04L5/0048 ,  H04W72/042 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, control signaling indicating a set of resources for transmitting a set of uplink shared channel transmissions and a set of demodulation reference signals (DMRSs) having phase coherence across a set of transmission time intervals (TTIs). The UE may receive, from the base station, a control message indicating a cancellation of a first resource of the set of resources. The UE may determine one or more phase-continuity conditions for the set of resources based on receiving the control message indicating the cancellation of the first resource. The UE may transmit, in remaining resources of the set of resources, at least a subset of the set of uplink shared channel transmissions and at least a subset of the set of DMRSs in accordance with the one or more phase-continuity conditions.

公开(公告)号：US20230156601A1

公开(公告)日：2023-05-18

申请号：US17529847

申请日：2021-11-18

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy Abdelghaffar ,  Wanshi Chen ,  Peter Gaal ,  Gokul Sridharan ,  Hung Dinh Ly

IPC: H04W52/02 ,  H04W24/10 ,  H04L5/00

CPC classification number: H04W52/0235 ,  H04W52/0258 ,  H04W24/10 ,  H04L5/0051

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a wireless network device (e.g., a base station or a transmission reception point (TRP) of the base station), a first control message comprising an indication of a set of energy saving modes of the wireless network device. The UE may receive a second control message indicating a first energy saving mode from the set of energy saving modes, where the first energy saving mode may be indicative of a number of channel state information (CSI) reference signal (CSI-RS) resources used by the wireless network device. The UE may monitor one or more of the CSI-RS resources for a CSI-RS in accordance with the first energy saving mode, and transmit, to the wireless network device, CSI feedback determined based on measurements made by the UE of the CSI-RS.

公开(公告)号：US11616633B2

公开(公告)日：2023-03-28

申请号：US17005195

申请日：2020-08-27

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh Ly ,  Renqiu Wang ,  Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Pui Lok Ang ,  Peter Gaal ,  Tingfang Ji

IPC: H04L5/16 ,  H04W72/04 ,  H04L5/00 ,  H04W72/14 ,  H04L41/0803 ,  H04W72/10 ,  H04L1/08 ,  H04L1/1812

Abstract: A UE may be configured for half-duplex communications. An access point may configure half-duplex UEs for efficient resource utilization using two or more different half-duplex configurations that include different timing for channels in different directions. A UE may determine a half-duplex configuration for use in communicating with the access point, each slot of the half-duplex configuration including at least a PDCCH on a downlink frequency and an uplink short burst on an uplink frequency, and each slot associated with a HARQ timeline. The UE may determine a direction for a slot. The UE may transmit or receive according to the direction for the slot and the half-duplex configuration.

公开(公告)号：US11582795B2

公开(公告)日：2023-02-14

申请号：US17160156

申请日：2021-01-27

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud Taherzadeh Boroujeni ,  Tao Luo ,  Sony Akkarakaran ,  Yan Zhou ,  Wooseok Nam ,  Hung Dinh Ly

IPC: H04W4/00 ,  H04W74/00 ,  H04W74/08 ,  H04W56/00 ,  H04W72/0446 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may attempt to connect to a base station using a random access procedure. During the random access procedure, the base station may transmit control information and data associated with a random access response (RAR) during an RAR window. The UE may identify a channel quality and may transmit a random access request of a first type to the base station. The base station may receive the random access request and transmit repeating instances of the control information or the data, or both, based on identifying that the random access request is of the first type. The UE may use soft-combining to increase the likelihood of successfully decoding the control information and the data associated with the RAR, and likewise may increase the likelihood of successfully receiving the RAR from the base station.

公开(公告)号：US11582794B2

公开(公告)日：2023-02-14

申请号：US17127120

申请日：2020-12-18

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud Taherzadeh Boroujeni ,  Tao Luo ,  Sony Akkarakaran ,  Yan Zhou ,  Hung Dinh Ly ,  Wooseok Nam

IPC: H04W4/00 ,  H04W74/00 ,  H04W72/04 ,  H04W72/0446 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive signaling indicating a configuration for communicating to the UE a random access response of a random access procedure. The configuration may indicate a first quantity of instances of control information associated with the random access response in a set of slots and a portion of the time window configured for the first quantity of instances. The UE may monitor the set of slots for instances of the control information and receive a second quantity of instances of the control information for the UE in a first subset of slots of the set of slots. The second quantity of instances may be less than the first quantity of instances. The UE may combine the instances of the control information from the first subset of slots and decode the random access response based on combining the instances.

公开(公告)号：US20230044521A1

公开(公告)日：2023-02-09

申请号：US17758417

申请日：2020-12-14

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Attia Abotabl ,  Muhammad Sayed Khairy Abdelghaffar ,  Alexandros Manolakos ,  Hung Dinh Ly ,  Huilin Xu ,  Krishna Kiran Mukkavilli ,  Wanshi Chen ,  Tingfang JI ,  Shimman Arvind Patel

IPC: H04L5/14 ,  H04L5/16 ,  H04W74/08

Abstract: Systems and methods in which one or more wireless communication stations implement duplex-mode remediation to facilitate the signal communication when an issue with respect to self-interference is identified are described. Duplex-mode remediation may be implemented for various communication scenarios, such as for random access phase communications, for communications having different priorities, etc. A wireless communication station may implement one or more changes with respect to the full duplex operation of the wireless communication station based upon determining that an issue with respect to self-interference may be, or is being, experienced, such as to provide for a wireless communication station operating in an in-band full duplex mode to increase interference cancellation and/or to fall back to a sub-band full duplex mode or a half duplex mode, to provide for a wireless communication station operating in a sub-band full duplex mode to increase interference cancellation and/or to fall back to a half duplex mode.