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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
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.
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公开(公告)号：US09844077B1
公开(公告)日：2017-12-12
申请号：US14662398
申请日：2015-03-19
Applicant: Sprint Spectrum LP
Inventor： Sanghoon Sung , Udit Thakore , Hau Tran , Tri Duong
CPC classification number: H04W74/0833 , H04B7/0617 , H04B7/086 , H04W72/046 , H04W72/0493 , H04W72/08
Abstract: A method of operating a communication system includes communicating data between an access node and a wireless device using carrier aggregation. This carrier aggregation includes communicating using at least a primary carrier and a secondary carrier. The communication system determines that conditions for the secondary carrier meet a beamforming requirement criteria. The communication system determines an angle of arrival of the primary carrier. Based on the angle of arrival determined for the primary carrier, beamforming is applied to the secondary carrier.
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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.
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公开(公告)号：US10075217B1
公开(公告)日：2018-09-11
申请号：US14970875
申请日：2015-12-16
Applicant: Sprint Spectrum LP
Inventor： Sanghoon Sung , Udit Thakore , Pinal Tailor , Yun Sung Kim
CPC classification number: H04B7/026 , H04B7/15507 , H04B7/15528 , H04W88/04
Abstract: UEs capable of RF relay are enabled and disabled under certain conditions. The access node can control the on and off duration of the UE functioning as an RF relay. The access node may only enable RF relay when there is a need by another UE for the RF relay. The UEs selected to relay (or to not relay) may be selected based on their location (e.g., close to a UE that is experiencing poor signal strength). In an embodiment, the RF relay function of UEs are successively turned on by the access node. This causes these UEs to relay the access node's beacon signal. If, after a period of time, the wireless network performance is not improved, these UEs are commanded to disable their RF relays. If the wireless network performance is improved, the UE may be allowed to continue as an RF relay.
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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
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.
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Patent Agency Ranking
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
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.
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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
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.
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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
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.
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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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公开(公告)号：US09838978B1
公开(公告)日：2017-12-05
申请号：US14970892
申请日：2015-12-16
Applicant: Sprint Spectrum LP
Inventor： Sanghoon Sung , Udit Thakore , Hau Tran , Yun Sung Kim
CPC classification number: H04W52/262 , H04B17/318 , H04J11/003 , H04L1/0005 , H04L5/0046 , H04L5/0069 , H04L5/14 , H04W16/14 , H04W52/242 , H04W52/244 , H04W52/383 , H04W72/1263 , H04W72/1268 , H04W76/23
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.
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