TECHNIQUES FOR INTER-GNB MIGRATION OF DISTRIBUTED UNIT

    公开(公告)号:US20220117007A1

    公开(公告)日:2022-04-14

    申请号:US17492296

    申请日:2021-10-01

    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).

    GAP SWITCH FOR WIRELESS SYSTEMS WITH MULTIPLE PARENTS

    公开(公告)号:US20210235345A1

    公开(公告)日:2021-07-29

    申请号:US17158635

    申请日:2021-01-26

    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.

    GAP ENHANCEMENTS IN WIRELESS NETWORKS

    公开(公告)号:US20210227544A1

    公开(公告)日:2021-07-22

    申请号:US17151049

    申请日:2021-01-15

    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.

    SIGNALING TO SUPPORT MOBILE INTEGRATED ACCESS AND BACKHAUL

    公开(公告)号:US20210044958A1

    公开(公告)日:2021-02-11

    申请号:US16947496

    申请日:2020-08-04

    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.

    MOBILE INTEGRATED ACCESS AND BACKHAUL PROCEDURES BASED ON INTERFACE AVAILABILITY

    公开(公告)号:US20250106924A1

    公开(公告)日:2025-03-27

    申请号:US18810960

    申请日:2024-08-21

    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.

    CONFIGURING USER EQUIPMENT PAGING IN ACCORDANCE WITH USER EQUIPMENT MOBILITY

    公开(公告)号:US20250106611A1

    公开(公告)日:2025-03-27

    申请号:US18472109

    申请日:2023-09-21

    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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