公开(公告)号：US10701667B2

公开(公告)日：2020-06-30

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 ,  H04W72/12 ,  H04W64/00 ,  H04W8/00 ,  H04W76/28

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：US10700748B2

公开(公告)日：2020-06-30

申请号：US16133205

申请日：2018-09-17

Applicant: QUALCOMM Incorporated

Inventor： Sundar Subramanian ,  Juergen Cezanne ,  Bilal Sadiq ,  Muhammad Nazmul Islam ,  Navid Abedini ,  Junyi Li

IPC: H04B7/06 ,  H04B7/0408 ,  H04W72/04 ,  H04W16/28 ,  H04B7/08 ,  H04L5/00

Abstract: Wireless communication techniques that include beam training performed to aid mobile devices in identifying beams for use in communications (e.g., uplink communications) are discussed. A mobile device may transmit to a base station an indication of a level of beamforming reciprocity of the mobile device. A base station/gNB may transmit an indication of one or more transmission beams to be used by the mobile device for uplink wireless communication based on the level of beamforming reciprocity. The one or more transmission beams to be used by the mobile device for uplink communication may include a reciprocal transmission beam. A mobile device not capable of full beamforming reciprocity may determine a transmission beam through uplink beam training. A mobile device may transmit to a base station information using at least one of the one or more transmission beams. Other aspects and features are also claimed and discussed.

公开(公告)号：US10687335B2

公开(公告)日：2020-06-16

申请号：US15400446

申请日：2017-01-06

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sony Akkarakaran ,  Bilal Sadiq ,  Junyi Li

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/04 ,  H04L5/00 ,  H04W72/08 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

Abstract: In a process of beam change, the base station transmits a beam change instruction to a user equipment to confirm a change from a current beam to another beam. The base station determines to change from a first beam to a second beam. The base station generates a beam change instruction to indicate the determination to change from the first beam to the second beam. The base station transmits, to a UE, the beam change instruction in a downlink control information (DCI). The base station determines whether or not the beam change instruction is detected by the UE.

公开(公告)号：US10687296B2

公开(公告)日：2020-06-16

申请号：US15922554

申请日：2018-03-15

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Juergen Cezanne ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Navid Abedini ,  Tao Luo

IPC: H03M13/00 ,  H04L27/06 ,  H04W56/00 ,  H04W72/00 ,  H04L5/00 ,  H04L1/18 ,  H04L1/00 ,  H04W48/10 ,  H03M13/09 ,  H03M13/29 ,  H03M13/23 ,  H03M13/13 ,  H03M13/15

Abstract: A user equipment (UE) receives a first synchronization signal (SS) block including a first codeword and a second SS block including a second codeword. Each codeword is based on a linear encoding of a physical broadcast channel (PBCH) payload. The PBCH payloads include different timing indicators. The SS blocks are received at different times separated by a time increment. The UE determines, based on the time increment, one or more hypotheses of combined decoding metrics for the first codeword and the second codeword, and decodes the first codeword based on each of at least one hypothesis in the one or more hypotheses. The at least one hypothesis includes a correct hypothesis. The UE determines the first codeword based on an error detection procedure such as CRC verification performed when decoding the first codeword based on the correct hypothesis.

公开(公告)号：US20200092810A1

公开(公告)日：2020-03-19

申请号：US16690534

申请日：2019-11-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/02 ,  H04W72/12 ,  H04W76/28 ,  H04B7/06 ,  H04W72/04 ,  H04W74/08

Abstract: A wireless device configured for discontinuous reception (DRX) may and operating in a system that uses directional beamforming may identify a random access time period after awaking from a DRX sleep mode. The device may then transmit a scheduling request during the random access time period. In some cases, the device may transmit the scheduling request using frequency resources also associated with random access transmissions. In other cases, the device may utilize resources that are not associated with random access. The determination of which frequency resources are used may depend on the length of the DRX. That is, if a device has been in a sleep mode for a long time, it may use random access frequency resources that are associated with a more robust transmission configuration.

公开(公告)号：US10595342B2

公开(公告)日：2020-03-17

申请号：US15949945

申请日：2018-04-10

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Junyi Li ,  Sundar Subramanian ,  Tamer Kadous

IPC: H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. A wireless node may transmit directional signals in a sweeping transmission pattern while receiving communications from a second wireless node. Another wireless node may then, during a listen-before-talk (LBT) procedure, receive one of the directional signals, and terminate a correspondence communication session to avoid potential interference. Additionally or alternatively, a wireless node may listen in directions in a sweeping receive pattern while transmitting to a second wireless node. While listening, the wireless node may detect a transmission from a third wireless node in a particular direction. The wireless node may then accordingly refrain from transmitting in that direction to avoid potential interference.

公开(公告)号：US10582538B2

公开(公告)日：2020-03-03

申请号：US15360062

申请日：2016-11-23

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Junyi Li ,  Sundar Subramanian ,  Juergen Cezanne ,  Navid Abedini ,  Tao Luo

IPC: H04L12/50 ,  H04W74/08 ,  H04L5/00 ,  H04W24/10 ,  H04W52/18 ,  H04W56/00 ,  H04W52/24 ,  H04B1/04

Abstract: In one aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided to reduce overhead at the expense of increasing latency for UEs with weak link gain, while latency for most UEs may remain the same. The apparatus may be a UE. The apparatus may transmit a RACH preamble to a base station in one or more attempts. The apparatus may receive, through a random access response message from the base station, information including the number of attempts the base station uses to decode the RACH preamble. The apparatus may adjust the transmission power for the connection request message according to the number of attempts the base station uses to decode the RACH preamble. The apparatus may transmit the connection request message using the adjusted transmission power.

公开(公告)号：US10581660B2

公开(公告)日：2020-03-03

申请号：US16175519

申请日：2018-10-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Juergen Cezanne ,  Krishna Kiran Mukkavilli ,  Sundar Subramanian ,  Junyi Li

IPC: H04W88/02 ,  H04L27/26 ,  H04L5/00 ,  H04W76/27 ,  H04W72/04 ,  H04W88/08

Abstract: DM-RS symbols may be inserted in the beginning of a subframe, or in two parts of the subframe. In one aspect, a method, a computer-readable medium, and an apparatus for dynamically conveying DM-RS information are provided. The apparatus may be a base station. The apparatus may determine the number of DM-RS symbols and/or the locations within a subframe for transmission of the DM-RS symbols. The apparatus may transmit the number of the DM-RS symbols and/or the locations within the subframe for transmission of the DM-RS symbols to a UE. In another aspect, a UE may receive the number of DM-RS symbols and/or the locations within a subframe for transmission of the DM-RS symbols from a base station. The UE may decode the DM-RS symbols from the subframe based on the number of the DM-RS symbols and/or the locations within a subframe for transmission of the DM-RS symbols.

公开(公告)号：US20200067672A1

公开(公告)日：2020-02-27

申请号：US16672411

申请日：2019-11-01

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A base station and user equipment (UE) may use subframe configurations that include dynamically scheduled channel state information reference signal (CSI-RS) symbols. For example, a base station may identify a subframe configuration that includes one or more sets of CSI-RS symbols of a subframe. The base station may indicate to a UE whether sets of CSI-RS symbols may be enabled or disabled during the subframe. The UE may receive multiple CSI-RSs at different locations within the subframe as indicated by the base station, and transmit CSI feedback to the base station based on at least one of the received CSI-RSs. In some examples, multiple base stations may coordinate the use of subframe configurations that include CSI-RS symbols that may be enabled or disabled.

公开(公告)号：US20200053680A1

公开(公告)日：2020-02-13

申请号：US16537236

申请日：2019-08-09

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W40/22 ,  H04W88/08 ,  H04L12/733

Abstract: Methods, systems, and devices for wireless communications are described that provide for hop-count indication in an integrated access and backhaul (IAB) network. An IAB-node may adopt and indicate multiple values for hop-count. The hop-count may be conveyed by a number of different reference signals and channels. A resource pattern and/or a slot pattern may also be associated with the hop-count to simply signaling. By associating the patterns with the hop-count, an IAB-node may be able to infer the resource pattern used by another IAB-node.