公开(公告)号：US11147120B2

公开(公告)日：2021-10-12

申请号：US16725791

申请日：2019-12-23

Applicant: QUALCOMM INCORPORATED

Inventor： Jianghong Luo ,  Muhammad Nazmul Islam ,  Sumeeth Nagaraja ,  Ashwin Sampath ,  Sundar Subramanian

IPC: G08C17/00 ,  H04W76/28 ,  H04W72/04 ,  H04W72/14 ,  H04W56/00 ,  H04W52/02 ,  H04B7/08 ,  H04B7/06 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit, to a user equipment (UE) operating in a discontinuous reception mode, a wakeup signal indicating whether data is available to be transmitted to the UE, the wakeup signal transmitted using a first set of transmit beams, which may be selected from a periodic beam management procedure, in accordance with a beam sweeping configuration. The base station may receive, from the UE and based at least in part on the wakeup signal, a response signal. The base station may perform, based at least in part on the response signal, further beam update procedures to identify a second set of transmit beams for future transmissions of the wakeup signal and/or for transmission of physical downlink control channel (PDCCH) to the UE.

公开(公告)号：US20210289558A1

公开(公告)日：2021-09-16

申请号：US16818796

申请日：2020-03-13

Applicant: QUALCOMM Incorporated

Inventor： Junsheng Han ,  Muhammad Nazmul Islam ,  Raghu Narayan Challa ,  Mihir Vijay Laghate ,  Amir Aminzadeh Gohari ,  Alexei Yurievitch Gorokhov

IPC: H04W74/08 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for selecting a PRACH occasion (RO) based on downlink quality, access congestion, latency (e.g., time to next available RO), beam correspondence, random access in previous transmissions, or combinations of these factors. The user equipment (UE) may detect access congestion of synchronization signal blocks (SSBs) and select the less congested SSB in the RO selection. The UE may detect the access congestion by receiving a back-off indicator from the base station, detecting a contention resolution failure, or the number or media access control (MAC) subheaders in a random access response. In some cases, the ROs associated with different SSBs have different latencies and the UE may select the earliest available RO.

公开(公告)号：US11115944B2

公开(公告)日：2021-09-07

申请号：US16564806

申请日：2019-09-09

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Samel Celebi ,  Tao Luo ,  Jianghong Luo ,  Karl Georg Hampel ,  Junyi Li

IPC: H04W56/00 ,  H04W74/08 ,  H04L1/00 ,  H04W72/04 ,  H04L29/12

Abstract: Methods, systems, and devices for wireless communications are described. A first node of an integrated access and backhaul (IAB) network may identify a second, neighboring non-parent node of the IAB network. The second node may be associated with a timing source which may provide more accurate timing information than the parent node of the first node. The first node may transmit a first random access message to the second node to initiate a random access procedure. The second node may transmit a second random access message to the first node, the second random access message including timing information based on the timing source. The first and second nodes may terminate the random access procedure based at least in part on receiving the second random access message.

公开(公告)号：US11109333B2

公开(公告)日：2021-08-31

申请号：US16902132

申请日：2020-06-15

Applicant: QUALCOMM Incorporated

Inventor： Tianyang Bai ,  Muhammad Nazmul Islam ,  Juergen Cezanne ,  Sundar Subramanian ,  Ruhua He ,  Raghu Narayan Challa ,  Alexei Yurievitch Gorokhov ,  Junyi Li

IPC: H04J3/06 ,  H04W56/00 ,  H04W72/04 ,  H04B7/08 ,  H04L5/00 ,  H04B7/06

Abstract: A UE may identify a first indication associated with a first signaling to be received in a time interval and identify a second indication associated with a second signaling to be received in the time interval. The UE may select to receive and receive, in the time interval, at least one of the first signaling or the second signaling based on at least one of the first or second indications. One or more of the first and second indications may be received from a BS or determined by the UE via predefined or other means. A BS may convey indications of the first and/or second signaling. The first and second indications may be transmitted sufficiently before the signaling in an effort to allow the UE to select and tune its receiver beam in the direction of the signaling to be received.

公开(公告)号：US11108441B2

公开(公告)日：2021-08-31

申请号：US16657992

申请日：2019-10-18

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Tao Luo ,  Sundar Subramanian ,  Junyi Li

IPC: H04B7/04 ,  H04B7/0417 ,  H04B7/06 ,  H01Q1/24 ,  H04B7/0404 ,  H04W16/28 ,  H04W28/02 ,  H04W40/08 ,  H04W52/04 ,  H04W88/14

Abstract: A UE may receive, from a base station, a message requesting BSI. The UE may determine a number N of BSI reports to send to the base station, and each BSI report may indicate a beam index corresponding to a beam and a received power associated with the beam. The UE may send, to the base station, N BSI reports based on the message requesting BSI. The UE may receive, from the base station, a set of signals through a set of beams, and determine the received power for each signal of the set of signals received through each beam of the set of beams, each received power may be associated with a beam of the set of beams.

公开(公告)号：US11088747B2

公开(公告)日：2021-08-10

申请号：US15474859

申请日：2017-03-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Juergen Cezanne ,  Sundar Subramanian ,  Ashwin Sampath ,  Bilal Sadiq ,  Junyi Li

IPC: H04W4/00 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/08 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/08

Abstract: A first apparatus may transmit, to a user equipment (UE), on a control channel, one or more indications of one or more beam indexes corresponding to one or more beams. The first apparatus may transmit, to the UE, one or more reference signals through the one or more beams corresponding to the one or more beam indexes. The reference signals may be used by the UE to select a best subarray and/or receive combiner for communication with the first apparatus.

公开(公告)号：US11064537B2

公开(公告)日：2021-07-13

申请号：US16746704

申请日：2020-01-17

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Sony Akkarakaran ,  Muhammad Nazmul Islam ,  Tao Luo

IPC: H04W74/08 ,  H04W76/10

Abstract: This disclosure provides systems, methods and apparatus for wireless communications that support fallback from a 2-step to a 4-step random access procedures. A user equipment (UE) may establish a connection with a base station using a random access procedure. The random access procedure may be a 2-step random access procedure and reduce a number of handover exchange messages. The 2-step random access procedure may include the UE transmitting, to the base station, a first random access message including a preamble and a payload. In some implementations, the base station may receive the preamble but fail to receive or decode the payload. The random access procedure may utilize the received preamble information instead of performing retransmission of the first random access message. The base station may transmit a second random access message to the UE indicating, explicitly or implicitly, a fallback to a 4-step random access procedure for connection establishment.

公开(公告)号：US11057938B2

公开(公告)日：2021-07-06

申请号：US16270476

申请日：2019-02-07

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Linhai He ,  Bilal Sadiq ,  Tao Luo

IPC: H04W74/08 ,  H04W74/00

Abstract: A method, a computer-readable medium, and an apparatus are provided for wireless communication that enables a UE to generate a PRACH message based on an SSB/CSI-RS for a first cell or first band and to transmit the PRACH message via another cell or another band. Aspects enable a base station to select an SSB index for transmitting downlink communication to the UE on the first cell/first band. A UE receives an SSB/CSI-RS from a base station through a first cell and transmits a random access message for the SSB/CSI-RS to the base station through a second cell. In another aspect the UE receives the SSB/CSI-RS from a base station through a first frequency range and transmits a random access message based on the SSB/CSI-RS to the base station through a second frequency range.

公开(公告)号：US11057937B2

公开(公告)日：2021-07-06

申请号：US16153088

申请日：2018-10-05

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Jianghong Luo ,  Karl Georg Hampel ,  Junyi Li

IPC: H04W74/08 ,  H04W76/10 ,  H04W56/00 ,  H04W92/20 ,  H04B7/26 ,  H04W48/00

Abstract: Methods, systems, and devices for wireless communications are described that support node connection techniques in wireless systems, such as relay node connections in a wireless backhaul network. A first node, which may be a new node or a node seeking to re-establish a connection, may initiate a connection establishment through transmission of a synchronization signal (SS). The first node, responsive to the SS transmission, may receive a response signal from one of the other nodes, and may establish a link with the other node. In some cases, the response signal may be an SS transmission from the other node, and the first node may transmit a random access request to the other node to initiate establishment of the link. In other cases, the response signal may be a random access request from the other node to initiate establishment of the link.

公开(公告)号：US11057246B2

公开(公告)日：2021-07-06

申请号：US16848747

申请日：2020-04-14

Applicant: QUALCOMM Incorporated

Inventor： Juergen Cezanne ,  Ruhua He ,  Sundar Subramanian ,  Tao Luo ,  Muhammad Nazmul Islam ,  Junyi Li ,  Raghu Narayan Challa

IPC: H04L25/02 ,  H04B7/08 ,  H04B7/06 ,  H04B7/0456 ,  H04B17/27 ,  H04B17/309 ,  H04B17/382 ,  H04L1/00 ,  H04L5/00 ,  H04B7/0413

Abstract: Aspects of the disclosure relate to a method of operating a scheduled entity for wireless communication with a network. In some aspects, the scheduled entity transmits a message that requests a scheduling entity to transmit at least one reference signal. The scheduled entity obtains channel state information based on the at least one reference signal. The scheduled entity transmits a report that includes the channel state information. In other aspects, the scheduled entity transmits a message that requests a scheduling entity to schedule a reference signal transmission for the scheduled entity. The scheduled entity obtains an assignment of resources for transmission of the reference signal in response to the message. The scheduled entity transmits the reference signal based on the assignment of resources. Other aspects, embodiments, and features are also claimed and described.