Enhanced mobility in cellular deployments with network slicing

    公开(公告)号:US11895549B2

    公开(公告)日:2024-02-06

    申请号:US17424464

    申请日:2020-01-21

    CPC classification number: H04W36/22 H04W36/0055 H04W36/0083

    Abstract: Systems, methods, apparatuses, and computer program products for source cell to provide a service/slice indication to the target cell in the handover preparation. The source cell provides to a target cell a list of one or more service/slice specific indications for individual ones of one or more network slices in a request for enhanced handover from the source cell to the target cell in a handover preparation phase. The source cell receives from the target cell, indications in a handover request acknowledgement of one or more selected network slices to be handed over from the source cell to the target cell using enhanced handovers. Performs make-before-break handovers to hand over these selected network slices from the source cell to the target cell and performs normal handovers for the one or more other network slices.

    Handover of a coordinated multi-point connection

    公开(公告)号:US11849358B2

    公开(公告)日:2023-12-19

    申请号:US17119185

    申请日:2020-12-11

    Abstract: Certain example embodiments provide systems, methods, apparatuses, and computer program products for a handover of a coordinated multi-point connection. For example, certain embodiment may transfer a first coordinated multi-point connection (e.g., a further enhanced multiple input multiple output (FeMIMO) connection) to a second coordinated multi-point connection where the network may instruct the UE to not perform at least one random access procedure. The first coordinated multi-point connection may be controlled by a first cell (the serving cell) where the UE is ready to receive from and transmit to a first set of cells that comprises the serving cell and one or more non-serving cells. After handover, the second coordinated multi-point connection may be controlled by a previous non-serving cell, and the UE may be ready to receive from and transmit to a second set of cells that comprises the previous non-serving cell.

    Fallback to conditional handover using SSB reference signal

    公开(公告)号:US11785512B2

    公开(公告)日:2023-10-10

    申请号:US17391370

    申请日:2021-08-02

    CPC classification number: H04W36/00837 H04W36/0016 H04W36/0058 H04W56/001

    Abstract: In a system, apparatus, method, and non-transitory computer readable medium for implementing fallback to conditional handover using a SSB reference signal, a UE device may be caused to, receive RRC reconfiguration information from a source RAN node, the RRC reconfiguration information including a SSB RS based CHO execution condition associated with at least one target cell controlled by a target RAN node, and a CSI-RS based CHO execution condition associated with the target cell(s), perform signal measurements of at least one SSB RS and at least one CSI-RS associated with the target cell(s), the at least one CSI-RS associated with a contention-free random access resource, and perform the CHO with the target cell(s) based on the signal measurement results of the at least one SSB RS, the at least one CSI-RS, the SSB based CHO execution condition, and the CSI-RS based CHO execution condition.

    RECONFIGURATION FAILURE HANDLING FOR CPAC
    45.
    发明公开

    公开(公告)号:US20230239753A1

    公开(公告)日:2023-07-27

    申请号:US18158429

    申请日:2023-01-23

    CPC classification number: H04W36/00837 H04W36/0061 H04W48/20

    Abstract: There is provided an apparatus comprising means for: receiving, from a network node, at least one conditional primary secondary cell change and addition reconfiguration and at least one execution condition associated with at least one candidate primary secondary cell, wherein the reconfiguration comprises at least a new configuration for a master cell group; evaluating the at least one execution condition; determining that an execution condition associated with one of the at least one candidate primary secondary cell is satisfied; selecting the one of the at least one candidate primary secondary cell as a selected candidate cell; transmitting information on the selected candidate cell to the network node using a current master cell group configuration; failing to apply the conditional primary secondary cell change and addition associated with the selected candidate cell and detecting a reconfiguration failure; transmitting a message to trigger a re-establishment procedure, wherein the message comprises an explicit or implicit indication about the conditional primary secondary cell change and addition reconfiguration failure.

    Use of wait period to obtain on-demand system information for wireless networks

    公开(公告)号:US11595854B2

    公开(公告)日:2023-02-28

    申请号:US16624701

    申请日:2018-05-23

    Abstract: According to an example implementation, a method may include transmitting, by a user device to a base station in a wireless network, a system information request for on-demand system information during a random access procedure, where the system information request is a request for one or more parameters that enable the user device to communicate in the wireless network, receiving, by the user device from the base station, an indication of a wait period in which the user device waits before obtaining the on-demand system information, waiting, by the user device, a time duration during the wait period, and monitoring, by the user device after expiration of the wait period, a system information window in which a system information message having the on-demand system information is broadcasted by the base station.

    Selection of a target cell for handover based on channel impulse response metric

    公开(公告)号:US11388634B2

    公开(公告)日:2022-07-12

    申请号:US16879417

    申请日:2020-05-20

    Abstract: A method, apparatus, and computer-readable storage medium are provided for selecting a target cell based on channel impulse response (CIR) measurements, which may include receiving measurement configuration information including a CIR parameter from a first network node and may further include generating one or more measurement reports based on the CIR parameter, the one or more measurement reports including CIR measurements of one or more beams of one or more neighbor cells associated with the first network node and/or second network nodes and transmitting the one or more measurement reports to the first network node.
    The selecting a target cell based on CIR measurements may include transmitting measurement configuration information including a CIR parameter and receiving one or more measurement reports, including CIR measurements of one or more beams of one or more network nodes and selecting a target cell for handover using the measurements.

    MOBILITY ROBUSTNESS AND HANDLING FOR ENHANCED HANDOVER

    公开(公告)号:US20210400549A1

    公开(公告)日:2021-12-23

    申请号:US17309158

    申请日:2018-11-02

    Abstract: A source network apparatus (10) which provides access for a user equipment (30) to a communication network transmits (S102) a handover command to the user equipment (30), the handover command indicating a target network apparatus (20) for providing access for the user equipment (30) to the communication network, and a detach condition on when the user equipment (30) is to detach from the source network apparatus (10) after having accessed the target network apparatus (20) (S204) and received user plane data packets from the target network apparatus (20) (S205), wherein the source network apparatus (10) continues exchanging user plane data packets with the user equipment (30) (S101, S103) until the user equipment (30) detaches (S306) from the source network apparatus (10).

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