UE-controlled selection between inter-RAT handover and inter-RAT dual connectivity

    公开(公告)号:US11882491B2

    公开(公告)日:2024-01-23

    申请号:US17248523

    申请日:2021-01-28

    申请人: T-Mobile USA Inc.

    IPC分类号: H04W36/08 H04W76/15

    CPC分类号: H04W36/08 H04W76/15

    摘要: A method and system for dynamically controlling connectivity of a user equipment device (UE) when the UE has standalone connectivity with a first access node under a first radio access technology (RAT). An example method includes the UE detecting that the UE is within threshold strong coverage of a second access node under a second RAT, and the UE making a selection between (i) responsively handing over from the first access node to the second access node and (ii) having dual-connectivity with the first access node and the second access node. Further, the example method includes the UE informing the first access node of the UE's selection, perhaps together with an inter-RAT measurement report reporting that the UE is within threshold strong coverage of the second access node, and the first access node responsively taking action in accordance with the UE's selection.

    Use of uplink MU-MIMO grouping efficiency as basis to control split-uplink-mode operation for dual-connectivity service

    公开(公告)号:US11838974B1

    公开(公告)日:2023-12-05

    申请号:US17810875

    申请日:2022-07-06

    摘要: A method and system for controlling dual-connectivity service in a system where a first access node provides service on a first air interface and a second access node provides service on a second air interface, and where (i) in a single-connection-uplink mode for the dual-connectivity service, uplink user-plane communication is carried on just the second air interface and (ii) in a split-uplink mode for the dual-connectivity service, uplink user-plane communication is split between the first air interface and the second air interface. An example method includes determining an uplink Multi-User Multiple-Input-Multiple-Output (MU-MIMO) grouping efficiency of the second air interface and, based on the determined uplink MU-MIMO grouping efficiency of the second air interface, controlling whether to provide the dual-connectivity service in the single-connection-uplink mode or rather in the split-uplink mode.

    Use of per-connection insertion loss as basis for dynamic control of air-interface communication with dual-connected device

    公开(公告)号:US11785504B1

    公开(公告)日:2023-10-10

    申请号:US17807890

    申请日:2022-06-21

    摘要: A method and system for controlling data split of a dual-connected user equipment device (UE) when the UE has at least two co-existing air-interface connections including a first air-interface connection with a first access node and a second air-interface connection with a second access node. An example method includes (i) comparing a level of insertion loss of the first air-interface connection with a level of insertion loss of the second air-interface connection, (ii) based at least on the comparing, establishing a split ratio that defines a distribution of data flow of the UE between at least the first air-interface connection and the second air-interface connection, and (iii) based on the establishing, causing the established split ratio to be applied. Further the method could include using the comparison as a basis to set one of the UE's air-interface connections as the UE's primary uplink path.

    Dynamic restriction of split-uplink-mode operation in response to high level of voice muting

    公开(公告)号:US11770869B1

    公开(公告)日:2023-09-26

    申请号:US17648600

    申请日:2022-01-21

    摘要: A method and system for controlling application of split-uplink mode for dual-connectivity service in a system where a first access node provides service on a first air interface and a second access node provides service on a second air interface, and where (i) in a single-connection-uplink mode for the dual-connectivity service, uplink user-plane communication is carried on just the second air interface and (ii) in the split-uplink mode for the dual-connectivity service, uplink user-plane communication is split between the first air interface and the second air interface. An example method includes detecting at least a predefined threshold high level of uplink voice muting on the first air interface and responsively restricting application of the split-uplink mode for the dual-connectivity service.

    Method and system to facilitate media-content delivery

    公开(公告)号:US11706590B1

    公开(公告)日:2023-07-18

    申请号:US17448442

    申请日:2021-09-22

    IPC分类号: H04W4/12 H04W4/50 H04W88/18

    CPC分类号: H04W4/12 H04W4/50 H04W88/184

    摘要: A method and system for enabling MMS message delivery to a recipient device. An MMSC receives and stores MMS message content to be delivered to the recipient device, and the MMSC responsively sends to the recipient device an MMS-notification message carrying an address of the MMS message content stored at the MMSC and then receives a reply indicating that the recipient device received the MMS-notification message. The MMSC then detects that, after the MMSC received the reply, (i) at least a predefined threshold amount of time has passed and (ii) the MMSC has not yet received from the recipient device a request to download the MMS message content. And responsive to at least the detecting, the MMSC then sends to the recipient device a data-service-trigger message that triggers turning on data service of the recipient device, thus enabling MMS-message delivery to the recipient device.

    Dual-connectivity anchor-carrier selection based on transmission-mode support

    公开(公告)号:US11690115B1

    公开(公告)日:2023-06-27

    申请号:US16948513

    申请日:2020-09-22

    摘要: A method and system to control anchor carrier configuration for dual-connectivity service of a user equipment device (UE), the dual-connectivity service including the UE being served concurrently by a master node (MN) over a first connection and by a secondary node (SN) over a second connection. An example method includes determining, when the UE has the first connection with the MN, that the UE is within threshold poor coverage of the MN. And the method includes selecting as the anchor carrier one of multiple carriers on which the MN provides service. Further, the method includes, based at least on determining that the UE is within the threshold poor coverage of the MN, basing the carrier selection on a transmission mode that the MN supports using on the selected carrier. And the method includes causing the selected carrier to be the anchor carrier for the dual-connectivity service of the UE.

    Controlling carrier load based on distribution of secondary UE connections

    公开(公告)号:US11659536B1

    公开(公告)日:2023-05-23

    申请号:US17653784

    申请日:2022-03-07

    摘要: A method and system for controlling carrier load in a wireless communication system that supports multiple user equipment devices (UEs) each being primarily connected with a first access node on a first carrier and each having a respective secondary connection for dual-connectivity service. An example method includes (i) monitoring a distribution of the respective secondary connections of the UEs among being on a second carrier and being on a third carrier, the third carrier having wider bandwidth than the second carrier, (ii) based on the monitoring, determining that at least a predefined threshold portion of the UEs have their secondary connections on the third carrier rather than on the second carrier, and (iii) based at least on the determining, taking action to control load on the first carrier, such as limiting a maximum number of UEs allowed to be concurrently connected with the first access node on the first carrier.

    Serving cell selection based on backhaul connection maximum bit rate and packet-drop rate

    公开(公告)号:US11659483B1

    公开(公告)日:2023-05-23

    申请号:US17659282

    申请日:2022-04-14

    摘要: A method and system to control selection of a serving cell for a UE. An example method includes determining respectively for each candidate cell of multiple candidate cells a maximum backhaul bit rate of the candidate cell, determining that a given one of the candidate cells has a highest determined maximum backhaul bit rate among the candidate cells, and based at least on the determining that the given candidate cell has the highest determined maximum backhaul bit rate among the candidate cells, selecting the given candidate cell to be the serving cell for the UE. Further, the method could also include basing the selection on consideration of a backhaul packet-drop rate of the given cell. In example implementations, the selection of a serving cell could be a selection of a PCell for carrier-aggregation service, an anchor cell for dual-connectivity service, or a secondary cell for dual-connectivity service, among other possibilities.