公开(公告)号：US10736063B2

公开(公告)日：2020-08-04

申请号：US16008748

申请日：2018-06-14

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Junyi Li ,  Bilal Sadiq ,  Chinmay Vaze ,  Sumeeth Nagaraja ,  Juergen Cezanne

IPC: H04W56/00 ,  H04W72/04 ,  H04W52/02

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) being served by a first cell may receive a synchronization signal (SS) block from the first cell. The UE may also receive an SS block from a second cell. The first cell may determine synchronization assistance information for the second cell and transmit the synchronization assistance information to the UE. The UE may use the synchronization assistance information to determine the index for the SS block from the second cell. For example, the synchronization assistance information may indicate that the UE is to use the index of the SS block from the first cell as the index for the SS block from the second cell. Once the index for the SS block from the second cell is determined, the UE may identify the subframe or slot timing used by the second cell and proceed with cell acquisition.

公开(公告)号：US10687353B2

公开(公告)日：2020-06-16

申请号：US16008304

申请日：2018-06-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04W56/00 ,  H04W72/12 ,  H04B7/155

Abstract: A wireless node (e.g., a slave relay node) may receive scheduling commands over multiple wireless links and identify a scheduling conflict. For example, the wireless node my identify a conflict of wireless resources indicated by the received scheduling commands. The wireless node may select a non-conflicting subset of the scheduling commands based on a conflict policy, and transmit data over the wireless links according to the non-conflicting subset of the scheduling commands. Additionally or alternatively, the wireless node may transmit a conflict report indicating the identified scheduling conflict. The conflict report may be sent to other wireless nodes (e.g., master relay nodes associated with the conflicting scheduling commands). The other wireless nodes may engage in negotiation signaling to resolve the scheduling conflict, and may transmit an updated scheduling command to the slave relay node. The slave relay node may transmit data over wireless links based on the updated scheduling command.

公开(公告)号：US20200092784A1

公开(公告)日：2020-03-19

申请号：US16570246

申请日：2019-09-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W36/30 ,  H04W76/15 ,  H04W76/27 ,  H04W72/12 ,  H04B7/14

Abstract: Methods, systems, and devices for wireless communications are described. A relay device may detect an upstream radio link failure (RLF) associated with an upstream link of a wireless backhaul, where the wireless backhaul includes a first wireless link between the relay device and a first upstream backhaul device. The relay device may provide a first indication of the upstream radio link failure over a second wireless link between the relay device and a first downstream device. The relay device may establish a third wireless link with a second upstream backhaul device based on the detected upstream radio link failure. The relay device may provide multiple-access services to one or more downstream devices, where providing the multiple-access services is based on backhaul communications between the relay device and the second upstream backhaul device over the third wireless link.

公开(公告)号：US20200053682A1

公开(公告)日：2020-02-13

申请号：US16450325

申请日：2019-06-24

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Muhammad Nazmul Islam ,  Jianghong Luo ,  Wanshi Chen ,  Tao Luo ,  Junyi Li

IPC: H04W56/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for multiple timing advance offsets that may be used in communications between wireless devices on a wireless communications system. A first timing advance offset may be a fixed offset that has a predetermined value or is selected from a set of available predetermined values, and a second timing advance offset may be adjustable by a wireless device. The second timing advance offset may be used in cases where relatively large distances between wireless devices are present in a system, where certain fixed timing advances are used in addition to or irrespective of a receiving devices propagation delay, where one or more parent nodes have an associated timing reference, or combinations thereof.

公开(公告)号：US20200015316A1

公开(公告)日：2020-01-09

申请号：US16502488

申请日：2019-07-03

Applicant: QUALCOMM Incorporated

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

IPC: H04W80/02 ,  H04W56/00 ,  H04L5/00 ,  H04W74/08 ,  H04W72/12

Abstract: Aspects described herein relate to communicating timing advance (TA) values in an integrated access and backhaul (IAB) network. A first node in a wireless network can receive a media access control (MAC) control element (CE) indicating a downlink transmission timing advance for transmitting downlink communications. The first node can transmit downlink communications based on the MAC CE.

公开(公告)号：US10477593B2

公开(公告)日：2019-11-12

申请号：US16000639

申请日：2018-06-05

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W92/02 ,  H04W92/20 ,  H04B7/06 ,  H04W56/00 ,  H04W24/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may detect one or more base stations based at least in part on synchronization communications associated with the one or more base stations, and may determine one or more priority levels associated with the one or more base stations, wherein a given priority level, of the one or more priority levels, identifies a priority associated with initiating access to a wireless backhaul network via a respective base station of the one or more base stations. The base station may initiate, based at least in part on the one or more priority levels, an access procedure with a set of base stations of the one or more base stations. Numerous other aspects are provided.

公开(公告)号：US20190319774A1

公开(公告)日：2019-10-17

申请号：US16273440

申请日：2019-02-12

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/16 ,  H04W72/12 ,  H04W40/24 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A scheduled node may transmit, by a first node in the network and to a second node in the network, an indication of a first temporal pattern of communication states for communication by the first node on a first set of resources, the first node being configured for half-duplex communications. The scheduled node may receive, from the second node, a grant of resources for performing communications on a second set of resources that are multiplexed with the first set of resources in a frequency domain, a spatial domain, or a combination thereof.

公开(公告)号：US10448346B2

公开(公告)日：2019-10-15

申请号：US15713167

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

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

IPC: H04L12/28 ,  H04W56/00 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described that provide for the indication of communication information using a correlation between synchronization signals transmitted by a base station for cell acquisition. The communication information may include a physical channel timing parameter such as synchronization periodicity, a physical broadcast channel (PBCH) periodicity, a beam sweep periodicity, or a cyclic prefix (CP) type. Communication information may also indicate the presence of a physical broadcast channel (PBCH) transmission or a mobility reference signal (MRS) transmission. The correlation may be a phase shift between multiple signals or may be based on precoding matrices used during transmission processing of the synchronization signals across subcarriers and antenna ports.

公开(公告)号：US20190313447A1

公开(公告)日：2019-10-10

申请号：US16256790

申请日：2019-01-24

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Linhai He ,  Navid Abedini ,  Bilal Sadiq ,  Juergen Cezanne ,  Junyi Li

IPC: H04W74/04 ,  H04W74/08 ,  H04W74/00 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described. A node (e.g., a base station or network entity) may identify a signal that provides an indication of a location of a contention free random access channel (CFRA) resource within a time region and an indication of a timing pattern for the CFRA resource, the timing pattern associated with a pattern of subsequent instances of the time region in which the CFRA resource is repeated, wherein the CFRA resource is not a fully overlapping resource with respect to a contention based random access (CBRA) resource. The node may convey the signal to one or more user equipment (UE) to indicate the location and the timing pattern.

公开(公告)号：US20190297555A1

公开(公告)日：2019-09-26

申请号：US16252006

申请日：2019-01-18

Applicant: QUALCOMM Incorporated

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

IPC: H04W40/02 ,  H04L12/801 ,  H04L12/911 ,  H04L12/869 ,  H04W40/22 ,  H04W40/28 ,  H04L12/761

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless systems, a base station centralized unit (CU) may communicate with a user equipment (UE) through a multi-hop backhaul architecture. This multi-hop backhaul connection may include a donor base station and any number of relay base stations connected via backhaul links. In some cases, the relay base stations or the UE may experience data congestion in a logical channel-specific buffer. The relay base stations or UE may implement backpressure signaling (e.g., in the medium access control (MAC) layer) to mitigate the congestion. A wireless device operating as a mobile termination (MT) endpoint may transmit a backpressure report message to a wireless device operating as a base station distributed unit (DU) endpoint for the logical channel. The base station DU may adjust a scheduling rate for data unit transmissions over the indicated logical channel based on the backpressure report.