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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
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).
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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
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.
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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
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.
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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
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.
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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
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.
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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
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.
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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
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.
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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.
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公开(公告)号:US20250106924A1
公开(公告)日:2025-03-27
申请号:US18810960
申请日:2024-08-21
Applicant: QUALCOMM Incorporated
Inventor: Naeem AKL , Karl Georg HAMPEL
Abstract: Methods, systems, and devices for mobile integrated access and backhaul procedures based on interface availability are described. Some examples may provide approaches for blocking at least a portion of mobile Integrated Access and Backhaul (IAB) procedures when Xn connectivity is unavailable. Some aspects of the techniques may be performed in the context of mobile IAB node integration. For example, a second central unit (CU) may determine if Xn connectivity is available with a first CU. In a case that Xn connectivity is unavailable, the second CU may reject an F1 connection setup request or the second CU may accept the F1 connection setup request and trigger a DU migration to a different CU. Some aspects of the techniques may be performed in the context of mobile IAB-mobile termination (MT) migration. Some aspects of the techniques may be performed in the context of mobile IAB-distributed unit (DU) migration.
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公开(公告)号:US20250106611A1
公开(公告)日:2025-03-27
申请号:US18472109
申请日:2023-09-21
Applicant: QUALCOMM Incorporated
Inventor: Navid ABEDINI , Naeem AKL , Shankar KRISHNAN
Abstract: A method for wireless communication by a user equipment (UE) includes receiving, from a network node, a first message indicating one or more parameters associated with a limited mobility zone within a coverage area of one or more cells. The method also includes transmitting, to the network node, a second message indicating the UE is within the limited mobility zone in accordance with determining the UE is within the limited mobility zone in accordance with the one or more parameters. The method further includes receiving, from the network node, a third message including first paging information in accordance with a first paging configuration associated with the limited mobility zone.
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