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    Techniques for device-to-device frequency reuse in cellular networks
    1.
    发明授权
    Techniques for device-to-device frequency reuse in cellular networks 有权

    公开(公告)号：US10798660B1

    公开(公告)日：2020-10-06

    申请号：US15800527

    申请日：2017-11-01

    Applicant: Sprint Spectrum LP

    Inventor： Sanghoon Sung ,  Udit Thakore ,  Hau Tran ,  Yun Sung Kim

    IPC: H04W52/26 ,  H04L5/14 ,  H04W72/12 ,  H04W16/14 ,  H04W52/24

    Abstract: Device-to-device (D2D) transmissions by a wireless device may interfere with base station reception of other signals. To mitigate this interference, the wireless device estimates the path loss between itself and the base station. The path loss and the current D2D transmission power level are used to estimate the amount of interference the base station is experiencing as a result of the D2D transmissions from the wireless device. Based on the estimated interference experienced by the base station, the wireless device increases the robustness of the MCS being used and decreases the transmission power level by a corresponding amount. By decreasing the D2D transmission power level, less interference will be experienced by the base station. By increasing the robustness of the MCS, the impact of the reduced D2D transmission power level is mitigated.

    Dynamic handover threshold adjustment for load balancing
    2.
    发明授权
    Dynamic handover threshold adjustment for load balancing 有权

    公开(公告)号：US10433220B2

    公开(公告)日：2019-10-01

    申请号：US15241582

    申请日：2016-08-19

    Applicant: Sprint Spectrum LP

    Inventor： Yun Sung Kim ,  Pinal Tailor ,  Sanghoon Sung ,  Tri Duong

    IPC: H04W36/00 ,  H04W28/08 ,  H04W36/22

    Abstract: Access nodes in a network are configured to periodically measure cell loads and exchange cell load measurements with neighbors. At each access node, cell loads are compared with load thresholds, and with neighboring loads, to determine whether or not load balancing operations should be triggered. Load balancing operations include reducing or increasing an effective coverage area of one or both of the congested cell and the neighbor cell by adjusting a handover threshold parameter, such as a threshold signal level. Adjusting thresholds at a congested cell triggers more handovers from the congested cell to the non-congested cell. Similarly, adjusting thresholds at a non-congested cell prevents handovers from the non-congested cell to the congested cell.

    RF slave repeater management
    3.
    发明授权
    RF slave repeater management 有权

    公开(公告)号：US09973257B1

    公开(公告)日：2018-05-15

    申请号：US14829663

    申请日：2015-08-19

    Applicant: Sprint Spectrum LP

    Inventor： Sanghoon Sung

    IPC: H04B7/155

    CPC classification number: H04B7/15528

    Abstract: A communication system where wireless devices communicating with an access node may be communicating either directly with the access node, or via a heterodyne repeater. A heterodyne repeater relays communications transparently such that operation of the access node may not provide the ability to distinguish which wireless devices are communicating directly from those that are communicating via the heterodyne repeater. The system determines whether the wireless device is communicating either directly with the access node, or via a heterodyne repeater. When a wireless device is communicating via a heterodyne repeater, the access node selects a radio resource control configuration adapted for communication via a heterodyne repeater to be used with that wireless device.

    Systems and methods for mitigating interference from neighbors
    6.
    发明授权
    Systems and methods for mitigating interference from neighbors 有权

    公开(公告)号：US10687229B1

    公开(公告)日：2020-06-16

    申请号：US16378876

    申请日：2019-04-09

    Applicant: Sprint Spectrum LP

    Inventor： Sanghoon Sung ,  Dhaval Mehta ,  Udit Thakore

    IPC: H04W24/02 ,  H04L25/08 ,  H04W72/08 ,  H04L27/26 ,  H04W72/04

    Abstract: Systems and methods are described for mitigating interference from neighbors. Interference may be monitored at a first access node, wherein the monitoring includes detecting an interference pattern over at least two monitored subframes. The interference pattern may be analyzed to identify one or more interference sources, wherein a first interference pattern indicates interference caused by a neighboring access node and a second interference pattern indicates interference caused by one or more wireless devices communicating with a neighboring access node. The identified interference sources may be instructed to adjust transmissions based on the monitored interference.

    Systems and methods for load balancing in a wireless communication network
    7.
    发明授权
    Systems and methods for load balancing in a wireless communication network 有权

    公开(公告)号：US10313947B1

    公开(公告)日：2019-06-04

    申请号：US15716935

    申请日：2017-09-27

    Applicant: Sprint Spectrum LP

    Inventor： Sanghoon Sung ,  Pinal Tailor ,  Dhaval Mehta ,  Yun Sung Kim

    IPC: H04W36/22 ,  H04W24/08 ,  H04L12/26

    Abstract: Systems and methods are described for handoff of a wireless device. A total delay budget may be configured to a first access node. Scheduler delays associated with each of multiple scheduling buffers can be measured. An average scheduling delay for multiple wireless devices may be calculated based on the measured scheduler delays. The average scheduling delay may be compared to the total delay budget for the first access node and, when the average scheduling delay exceeds the total delay budget, a second access node may be selected for offload of at least one wireless device of the multiple wireless devices.

    Systems and methods for mitigating interference from neighbors
    8.
    发明授权
    Systems and methods for mitigating interference from neighbors 有权

    公开(公告)号：US10299145B1

    公开(公告)日：2019-05-21

    申请号：US15343448

    申请日：2016-11-04

    Applicant: Sprint Spectrum LP

    Inventor： Sanghoon Sung ,  Dhaval Mehta ,  Udit Thakore

    IPC: H04W24/02 ,  H04W72/04 ,  H04L25/08 ,  H04W72/08 ,  H04L27/26

    Abstract: Systems and methods are described for mitigating interference from neighbors. Interference may be monitored at a first access node, wherein the monitoring includes detecting an interference pattern over at least two monitored subframes. The interference pattern may be analyzed to identify one or more interference sources, wherein a first interference pattern indicates interference caused by a neighboring access node and a second interference pattern indicates interference caused by one or more wireless devices communicating with a neighboring access node. The identified interference sources may be instructed to adjust transmissions based on the monitored interference.

    Systems and methods for scheduling transmissions from an access node
    9.
    发明授权
    Systems and methods for scheduling transmissions from an access node 有权

    公开(公告)号：US10291541B1

    公开(公告)日：2019-05-14

    申请号：US14801044

    申请日：2015-07-16

    Applicant: Sprint Spectrum LP

    Inventor： Sanghoon Sung ,  Tri Duong ,  Udit Thakore ,  Yu Wang

    IPC: H04W72/12 ,  H04L12/925 ,  H04L12/823

    Abstract: Systems and methods are described for scheduling transmissions from an access node in a communication network. A plurality of data packets may be received at a buffer of an access node. A discard timer may be started on receipt of the data packets. When the discard packet timer expires, a number of data packets in the buffer and an associated aggregated queuing delay may be determined. The aggregated queuing delay may be compared to target block error rate (BLER). The target BLER may be modified when the aggregated queuing delay and the number of data packets exceed a target threshold. Data packets may be transmitted from the access node using the modified BLER.

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