公开(公告)号：US20190394738A1

公开(公告)日：2019-12-26

申请号：US16447681

申请日：2019-06-20

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W74/08

Abstract: An intermediary base station supporting mobile terminal (MT) functionality and/or a user equipment (UE) may receive a time alignment (TA) command and associated timer value from one or more distributed units (DUs) and/or a central unit (CU) of a parent base station. The TA command and timer value may be based on an experienced or potential timer expiration associated with a TA of a communication link. The TA command may specify an updated TA value and a timer reset for scheduling communications on the communication link. In some examples, the TA command may be in response to a TA command request provided by the MT or UE on allocated resources or configurations indicated by the parent base station. In other cases, the TA command may be in response to a random access procedure on allocated resources or configurations indicated by the parent base station.

公开(公告)号：US20190327767A1

公开(公告)日：2019-10-24

申请号：US16282614

申请日：2019-02-22

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Navid Abedini ,  Heechoon Lee ,  Tao Luo

IPC: H04W74/08 ,  H04W56/00 ,  H04W72/04 ,  H04W72/14 ,  H04W24/08 ,  H04W80/02 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform a random access (RACH) procedure based on a selected synchronization signal block (SSB). During this RACH procedure, a base station may transmit physical downlink control channel (PDCCH) messages for UE RACH message handling. To receive PDCCH signaling for RACH Messages 2, 3, or 4 (Msg 2/3/4), the UE may identify a set of time resources used by the base station for transmitting SSBs that are not quasi-co-located (QCL) with the selected SSB. The UE may identify a Msg 2/3/4 search space that does not overlap with this identified set of resources, and may monitor this identified search space. The search space may correspond to a modified remaining minimum system information (RMSI) search space indicated by the base station, or a valid RMSI search space not indicated by the base station.

公开(公告)号：US20190313369A1

公开(公告)日：2019-10-10

申请号：US16375820

申请日：2019-04-04

Applicant: QUALCOMM Incorporated

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

IPC: H04W68/08 ,  H04W68/02 ,  H04W48/16 ,  H04W8/00 ,  H04W72/12 ,  H04W64/00

Abstract: Methods, systems, and devices for wireless communications are described that provide a mechanism for a wireless node to identify resources that are controlled by a different wireless node in the wireless backhaul communications network and in some cases autonomously transmit certain transmissions using resources of the different wireless node. A first wireless node may receive signaling that indicates whether such transmissions may be autonomously transmitted via configuration information or a flag provided in signaling to the first wireless node. The first wireless node may in some cases determine that autonomous transmissions are enabled based on a type of communication or node that provides the information for the transmissions from the first wireless node. In some cases, a priority associated with the transmissions may be used to determine whether autonomous transmissions are enabled.

公开(公告)号：US20190312619A1

公开(公告)日：2019-10-10

申请号：US16249751

申请日：2019-01-16

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Tao Luo

IPC: H04B7/06 ,  H04B7/0426 ,  H04W52/36 ,  H04B17/309 ,  H04B17/382 ,  H04W24/02 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. In some integrated access and backhaul (IAB) systems, wireless devices may join the system through an initial integration procedure. For example, a base station may power up and detect a reference signal transmitted by a neighboring base station, and may establish a first beam pair link with this base station. In many cases, this first beam pair link may be a relatively “weak” beam pair link according to an associated quality metric. To improve the link, the integrating base station may transmit an indication of a characteristic (e.g., location or categorical information) of the integrating base station over the first beam pair link, and both base stations may perform beam training based on this characteristic. The base stations may establish a second beam pair link with a greater quality metric than the first beam pair link using this beam training.

公开(公告)号：US10425901B2

公开(公告)日：2019-09-24

申请号：US16015021

申请日：2018-06-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/14 ,  H04W16/28 ,  H04W74/08 ,  H04W76/27 ,  H04W72/04 ,  H04B7/06 ,  H04W52/16 ,  H04W52/24 ,  H04W52/32 ,  H04W52/42 ,  H04W74/00

Abstract: A transmit beamforming gain and a receive beamforming gain may be used when adjusting an uplink transmit power. For example, a user equipment (UE) may receive downlink communications from a base station on a receive beam having a beamforming gain that is different from a beamforming gain for an uplink transmit beam. The UE may adjust an uplink transmit power (e.g., for transmitting a random access channel (RACH)) based on a difference in the beamforming gains. For example, a parameter representing the difference in the beamforming gains, in addition to a maximum allowed transmit power, a target preamble received power, and an estimated path loss, may be used when determining an adjusted uplink transmit power for a RACH transmission. The adjustment may result in a higher or lower transmit power depending on the difference in the receive beamforming gain and the transmit beamforming gain.

公开(公告)号：US20190289500A1

公开(公告)日：2019-09-19

申请号：US16249041

申请日：2019-01-16

Applicant: QUALCOMM Incorporated

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

IPC: H04W28/16 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described that provide for partitioning of time-frequency resources for access and backhaul links separately. A centralized scheduler in a centralized system or a set of access nodes (ANs) in a distributed system may allocate a portion of a set of resources for a given link type (e.g., access or backhaul). In some cases, multiple ANs may exchange reports or measurements to determine the resources to allocate to a given link type. The allocated resources may be repurposed for use by a different link type (e.g., access resources may be repurposed and used for backhaul resources) in order to account for varying traffic conditions.

公开(公告)号：US10412702B2

公开(公告)日：2019-09-10

申请号：US16044453

申请日：2018-07-24

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Tingfang Ji ,  Yu Zhang ,  Navid Abedini ,  Bilal Sadiq ,  Ashwin Sampath

IPC: H04W64/00 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08 ,  H04B7/06 ,  H04B7/024 ,  H04L5/00

Abstract: Antenna ports on wireless devices may be QCL. QCL antenna ports may be useful in improving channel statistics related to the antenna ports. UEs and base stations may be able to determine candidate QCL ports, transmit information identifying the candidate QCL ports, and receive feedback indicating whether the candidate QCL ports are QCL at the receiving device such as a UE or a base station.

公开(公告)号：US20190253867A1

公开(公告)日：2019-08-15

申请号：US16239408

申请日：2019-01-03

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Zhibin Wu ,  Junyi Li ,  Sudhir Kumar Baghel ,  Kapil Gulati ,  Libin Jiang

IPC: H04W8/00 ,  H04W16/28 ,  H04W48/10 ,  H04W48/16 ,  H04B7/06 ,  H04W74/08 ,  H04W4/70 ,  H04W4/40 ,  H04J13/00 ,  H04W16/14

CPC classification number: H04W8/005 ,  H04B7/0413 ,  H04B7/0617 ,  H04J13/0062 ,  H04W4/40 ,  H04W4/70 ,  H04W16/14 ,  H04W16/28 ,  H04W48/10 ,  H04W48/16 ,  H04W74/0833

Abstract: Techniques are described for performing beam sweep procedures as part of a device discovery procedure. A transmitting device (e.g., user equipment (UE) or base station) may generate a discovery preamble that is configured to indicate that a discovery message will be transmitted. The discovery preamble may be a smaller message (e.g., less bits) than the discovery message and thus may use fewer resources when it is being communicated. The transmitting device may transmit a plurality of signals that include a discovery preamble as part of beam sweep procedure. Once the transmitting device identifies a receiving device, the transmitting device may broadcast the discovery message. The discovery preamble may include a variety of different types of information including information relating to an identifier for the transmitting device, a discovery mode of the transmitting device, beam configurations, communication resources, beam sweep indexes, or a combination thereof.

公开(公告)号：US20190239240A1

公开(公告)日：2019-08-01

申请号：US16383502

申请日：2019-04-12

Applicant: QUALCOMM Incorporated

Inventor： Karl Georg Hampel ,  Junyi Li ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Navid Abedini

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/12 ,  H04W72/04 ,  H04W72/1278 ,  H04W92/20

Abstract: Methods, systems, and devices for wireless communication are described. In particular, a backhaul network that may be established between access nodes and/or base stations is shown and described. To support communications via the backhaul network, a synchronized frame structure and unique network topologies may be established. Resources may be allocated to different wireless communication links based on the synchronized frame structure. Occupancy/availability indications are shown and described, which enable the local redistribution of resources to account for variations in signal quality and/or variations in traffic experienced by the backhaul network.

公开(公告)号：US20190215220A1

公开(公告)日：2019-07-11

申请号：US16219545

申请日：2018-12-13

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Navid Abedini

IPC: H04L27/26 ,  H04L1/18 ,  H04W72/04 ,  H04W74/08 ,  H04L1/06

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, base stations and user equipment (UEs) may use beamforming for transmitting random access channel (RACH) messages. A UE may transmit multiple RACH preamble messages (e.g., within a random access response (RAR) window) to initiate a RACH procedure. The UE may transmit the RACH preamble messages in transmission opportunities corresponding to reference signals received from the base station. In some cases, the UE may determine the number of RACH preamble messages to transmit within the RAR window based on an ability of the UE to simultaneously monitor for a RAR message in response to each of the transmitted messages. In other cases, the UE may transmit an indication of UE capabilities to the base station. The base station may determine a RACH resource configuration for the UE based on the capabilities and may indicate the configuration to the UE.