公开(公告)号：US09967776B1

公开(公告)日：2018-05-08

申请号：US14920547

申请日：2015-10-22

Applicant: Sprint Spectrum LP

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

IPC: H04W28/08 ,  H04W36/24 ,  H04W72/08 ,  H04W36/34 ,  H04W76/06 ,  H04W36/00

CPC classification number: H04W28/08 ,  H04W36/0055 ,  H04W76/30

Abstract: Embodiments disclosed herein provide individual idle-mode cell reselection priority lists to wireless devices dynamically, based on real-time load conditions for frequency bands deployed within a wireless network. Load equalization operations include classifying frequency bands into congested, target, or non-congested bands, grouping similar bands, comparing loads across the various bands in to a threshold, and adjusting the priority of each frequency band accordingly. The adjusted priorities are transmitted to each wireless device as the wireless device enters idle mode.

公开(公告)号：US10973022B1

公开(公告)日：2021-04-06

申请号：US16200986

申请日：2018-11-27

Applicant: Sprint Spectrum LP

Inventor： Sanghoon Sung ,  Yu Wang ,  Udit Thakore ,  Dhaval Mehta

IPC: H04W56/00 ,  H04W72/04 ,  H04B15/00 ,  H04B17/345

Abstract: Mitigating interference between access nodes in a wireless network includes determining interference caused to uplink signals received at a first access node by downlink signals transmitted from a second access node, and adjusting a guard period of a special subframe utilized by one or both of access nodes based on determining the interference, by switching special subframe formats to include a longer guard period. Overall interference is mitigated based on mutually-experienced propagation delay, and channel reciprocity. Adjustments are associated with known distances between access nodes.

公开(公告)号：US10397831B1

公开(公告)日：2019-08-27

申请号：US15138235

申请日：2016-04-26

Applicant: Sprint Spectrum LP

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

IPC: H04W28/08 ,  H04W72/04 ,  H04L5/14

Abstract: Systems and methods are described for load balancing between frequency bands based on bandwidth capacity. A load for a first frequency band and a load for a second frequency band may be determined, wherein a cell communicates with wireless devices over the first and second frequency bands. The determined loads may be adjusted based on a channel width for each frequency band and a duplexing scheme for each frequency band. And the adjusted loads may be balanced between the first frequency band and the second frequency band by instructing wireless devices in communication with the cell to change frequency bands used for communicating with the cell.

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.

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.

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.

公开(公告)号：US10462705B1

公开(公告)日：2019-10-29

申请号：US14710885

申请日：2015-05-13

Applicant: Sprint Spectrum LP

Inventor： Sanghoon Sung ,  Udit Thakore ,  Tri Duong ,  Dhaval Mehta

IPC: H04W28/00 ,  H04W28/18 ,  H04W16/28 ,  H04W72/04 ,  H04W24/08

Abstract: Systems and methods are described for preventing premature processing during beam forming. It may be determined, at an access node, that a wireless device has received data using a beam formed transmission from the access node. A gap may be calculated between a reported signal level for the wireless device and a transmission scheme used to transmit downlink data to the wireless device. A threshold value may then be adjusted based on the calculated gap, where the threshold value is used to determine when the wireless device scans a plurality of frequency bands. The adjusted threshold value may be transmitted to the wireless device.

公开(公告)号：US09860786B1

公开(公告)日：2018-01-02

申请号：US15011925

申请日：2016-02-01

Applicant: Sprint Spectrum LP

Inventor： Yu Wang ,  Dhaval Mehta ,  Won An ,  Udit Thakore

IPC: H04W28/08 ,  H04W28/06 ,  H04L29/06 ,  H04B7/155 ,  H04W88/04

CPC classification number: H04W28/06 ,  H04B7/15542 ,  H04L65/608 ,  H04L65/80 ,  H04L69/04 ,  H04W88/04

Abstract: Network nodes including relays and access nodes are configured to transport data packets by identifying the type of data packet and correspondingly compressing a header portion of the data packet. Operations described herein may be implemented in a network that is capable of transporting voice over LTE (VoLTE) data packets using the GPRS tunneling protocol (GTP). A unique value is marked to an IP header of the voice data packet, and the GTP headers may be mapped to a unique bearer that is different from a standard voice bearer used in the network. The compression uses a robust header compression (RoHC), which includes compressing a RTP header portion along with a GTP header portion using existing or new compression profiles.