公开(公告)号：US20220240103A1

公开(公告)日：2022-07-28

申请号：US17157812

申请日：2021-01-25

Applicant: QUALCOMM Incorporated

Inventor： Bapineedu Chowdary GUMMADI ,  Naeem AKL ,  Hem AGNIHOTRI ,  Karl Georg HAMPEL ,  Navid ABEDINI

IPC: H04W24/02 ,  H04W76/19 ,  H04W88/14 ,  H04W76/30 ,  H04W76/27 ,  H04W74/08 ,  H04W80/02

Abstract: When an integrated access backhaul (IAB) node connected to a user equipment (UE) detects a radio link failure in a communication with an IAB donor, the IAB node may perform various features to cause the UE perform one or more features accordingly without explicitly indicating the radio link failure to the UE. The IAB node may detecting a radio link failure in a communication between the IAB node and an IAB donor, and determine whether the IAB node has recovered from the radio link failure. The IAB node may refrain from broadcasting one or more synchronization signal blocks (SSBs) to one or more UEs including a UE connected to the IAB node in response to determining that the IAB node has not recovered from the radio link failure.

公开(公告)号：US20220132394A1

公开(公告)日：2022-04-28

申请号：US17451797

申请日：2021-10-21

Applicant: QUALCOMM Incorporated

Inventor： Naeem AKL ,  Karl Georg HAMPEL ,  Navid ABEDINI ,  Jianghong LUO ,  Luca BLESSENT ,  Junyi LI ,  Tao LUO

IPC: H04W40/24 ,  H04L12/781 ,  H04W28/02 ,  H04L12/751

Abstract: A second network node determines a backhaul adaptation protocol (BAP) configuration associated with a backhaul traffic transport and including a topology identifier corresponding to a topology of a plurality of topologies for which traffic associated with the topology is transported based on the BAP configuration. The second network node sends, to a first network node, the BAP configuration associated with the backhaul traffic transport. The first network node receives a first BAP configuration associated with a first topology identifier (ID) corresponding to a first topology, and a second BAP configuration associated with a second topology ID corresponding to a second topology that overlaps at least in part with the first topology. The first network node determines with which traffic is associated routes traffic associated with the first topology ID based on the first BAP configuration, and traffic associated with the second topology ID based on the second BAP configuration.

公开(公告)号：US20220117007A1

公开(公告)日：2022-04-14

申请号：US17492296

申请日：2021-10-01

Applicant: QUALCOMM Incorporated

Inventor： Naeem AKL ,  Karl Georg HAMPEL ,  Navid ABEDINI ,  Jianghong LUO ,  Luca BLESSENT ,  Junyi LI ,  Tao LUO

IPC: H04W76/10 ,  H04W24/02 ,  H04W88/14

Abstract: Present disclosure provides techniques for migrating integrated access and backhaul (IAB) nodes from the source centralized unit (CU) to a target IAB-donor-CU of a base station. Features of the present disclosure achieve such migration by configuring the IAB distributed unit (IAB-DU)to establish F1-connection (F1-C) with the target IAB-donor-CU via the source path before the user equipment (UE) context transfer occurs. To this end, the source IAB-donor-CU may initiate an F1-C establishment between IAB-node DU and target IAB-donor-CU. The source IAB-donor-CU may do so by acting or presenting as an IAB-node-DU proxy to the target IAB-donor-CU. At the same time, the source IAB-donor-CU may act or present as a target-IAB-donor-CU proxy to the IAB-node-DU. Thus, in some cases, the source IAB-donor-CU may present as both the IAB-node-DU proxy (to the target IAB-donor-CU) and as a target-IAB-donor-CU proxy (to the IAB-node-DU).

公开(公告)号：US20220061002A1

公开(公告)日：2022-02-24

申请号：US17360811

申请日：2021-06-28

Applicant: QUALCOMM Incorporated

Inventor： Naeem AKL ,  Navid ABEDINI ,  Jianghong LUO ,  Karl Georg HAMPEL ,  Luca BLESSENT ,  Junyi LI ,  Tao LUO

IPC: H04W56/00 ,  H04W24/10 ,  H04W72/04 ,  H04W72/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station distributed unit (DU) may configure a report that identifies a transmission timing within a radio frame for transmission of one or more cell-defining synchronization signal blocks (CD-SSBs) in a serving cell of the base station DU. The base station DU may transmit the report to a base station control unit. Numerous other aspects are provided.

公开(公告)号：US20210410031A1

公开(公告)日：2021-12-30

申请号：US17357631

申请日：2021-06-24

Applicant: QUALCOMM Incorporated

Inventor： Naeem AKL ,  Karl Georg HAMPEL ,  Ozcan OZTURK ,  Navid ABEDINI ,  Jianghong LUO ,  Luca BLESSENT ,  Junyi LI ,  Tao LUO

IPC: H04W36/08 ,  H04W36/12 ,  H04W74/08 ,  H04W76/14

Abstract: Aspects described herein relate to receiving, by a mobile termination (MT) function of an integrated access and backhaul (IAB) node, a first indication to migrate from a first IAB donor node associated with a first cell group and a first central unit (CU) to a second IAB donor node associated with a second cell group and a second CU, performing, by the IAB node and based at least in part on receiving the first indication, a first random access procedure to connect to the second cell group associated with the second IAB donor node, establishing, by the IAB node in addition to a first distributed unit (DU) function of the IAB node that serves a third cell group and based on performing the first random access procedure, a second DU function that serves a fourth cell group.

公开(公告)号：US20210235345A1

公开(公告)日：2021-07-29

申请号：US17158635

申请日：2021-01-26

Applicant: QUALCOMM Incorporated

Inventor： Jianghong LUO ,  Navid ABEDINI ,  Luca BLESSENT ,  Naeem AKL ,  Tao LUO ,  Karl Georg HAMPEL ,  Junyi LI

IPC: H04W36/08 ,  H04W36/16

Abstract: Aspects of the present disclosure provide techniques switching a communication link for wireless systems with multiple parents, such as an Integrated Access and Backhaul (IAB) network or other type of network. In some cases, a node determines a partition of a number of desired guard symbols between a first parent node and a second parent node; sends, to the first parent node and to the second parent node, at least one indication of a partitioned number of the desired guard symbols for switching between the first parent node and the second parent node; receives at least one indication of a number of provided guard symbols from the first and second parent nodes; and switches a communication link from the first parent node to the second parent node in accordance with the at least one indication of provided guard symbols by the first parent node and the second parent node.

公开(公告)号：US20210227544A1

公开(公告)日：2021-07-22

申请号：US17151049

申请日：2021-01-15

Applicant: QUALCOMM Incorporated

Inventor： Jianghong LUO ,  Navid ABEDINI ,  Luca BLESSENT ,  Karl Georg HAMPEL ,  Naeem AKL ,  Tao LUO ,  Junyi LI

IPC: H04W72/04 ,  H04L27/26

Abstract: Aspects relate to enhancing the provision of gaps at transitions between resources allocated for communication on access links and resources allocated for communication on backhaul links. In some examples, a child integrated access backhaul network (IAB) node may transmit a message to a parent IAB node requesting a number of guard symbols to provide a gap at transitions. In some examples, the parent IAB node may transmit the number of guard symbols provided at transitions to the child IAB node. The parent IAB node, child IAB node, and/or an IAB donor node central unit may further identify a subcarrier spacing associated with the number of guard symbols.

公开(公告)号：US20210059015A1

公开(公告)日：2021-02-25

申请号：US16995089

申请日：2020-08-17

Applicant: QUALCOMM Incorporated

Inventor： Jianghong LUO ,  Junyi LI ,  Karl Georg HAMPEL ,  Navid ABEDINI ,  Luca BLESSENT ,  Tao LUO ,  Naeem AKL

IPC: H04W88/14 ,  H04W76/11 ,  H04W76/27 ,  H04W80/02 ,  H04W72/04 ,  H04W68/00 ,  H04W56/00

Abstract: An apparatus receives an indication of a Physical Cell Identifier (PCI) change for a serving integrated access and backhaul (IAB) node and uses the new PCI value for receiving communication from the serving IAB node based on the indication of the PCI change. The apparatus may comprise a user equipment (UE) or a mobile termination (MT) of a child IAB node that is served by the IAB node.

公开(公告)号：US20210058835A1

公开(公告)日：2021-02-25

申请号：US16994998

申请日：2020-08-17

Applicant: QUALCOMM Incorporated

Inventor： Jianghong LUO ,  Junyi LI ,  Karl Georg HAMPEL ,  Navid ABEDINI ,  Luca BLESSENT ,  Tao LUO ,  Naeem AKL

IPC: H04W36/00 ,  H04W16/04 ,  H04W48/16

Abstract: A central entity determines a physical cell identifier (PCI) change of an integrated access and backhaul (IAB) node from a first PCI to a second PCI and sends the second PCI to the IAB node. In response to receiving the second PCI from the central entity, the IAB node changes from using the first PCI to using the second PCI for the IAB node.

公开(公告)号：US20210044958A1

公开(公告)日：2021-02-11

申请号：US16947496

申请日：2020-08-04

Applicant: QUALCOMM Incorporated

Inventor： Navid ABEDINI ,  Karl Georg HAMPEL ,  Jianghong LUO ,  Naeem AKL ,  Luca BLESSENT ,  Tao LUO ,  Junyi LI

IPC: H04W8/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive mobility state information associated with an integrated access backhaul (IAB) node. The mobility state information may include information associated with at least one of: a level of mobility of the IAB node, or a change in mobility of the IAB node. The wireless communication device may perform an operation based at least in part on the mobility state information associated with the IAB node. In some aspects, a wireless communication device may determine that mobility state information associated with an IAB node is to be transmitted, and may transmit the mobility state information associated with the IAB node based at least in part on the determination. Numerous other aspects are provided.