公开(公告)号：US20190306072A1

公开(公告)日：2019-10-03

申请号：US15939892

申请日：2018-03-29

Applicant: AT&T Intellectual Property I, L.P. ,  AT&T Mobility II LLC

Inventor： Ming Zhang ,  Jianchun Zhou ,  Sameer Sangal

IPC: H04L12/805

Abstract: The described technology is generally directed towards selecting, by user equipment, a selected maximum transmission unit (MTU) packet size for wireless data transfer based on radio signal conditions. In one aspect, reference signal received power (RSRP) and reference signal received quality (RSRQ) are used to select the MTU packet size, e.g., by using RSRP and RSRQ as indices to a lookup table of predetermined MTU packet sizes, such as previously determined by field testing. In general, smaller MTU packet sizes are used with poorer quality radio signal conditions. The selected MTU packet size may be increased or decreased based on actual performance data and/or based on changed radio signal conditions, such as for a subsequent data transfer session. The user equipment may comprise a Cat-M device that transfers data related to Machine-Type Communications (MTC)/Machine to Machine (M2M) communications.

公开(公告)号：US20250125938A1

公开(公告)日：2025-04-17

申请号：US18487014

申请日：2023-10-13

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Jianchun Zhou ,  Yakun Gao

IPC: H04L5/00 ,  H04L5/14 ,  H04W36/08

Abstract: A method performed by a processing system including at least one processor includes detecting a presence of a plurality of user devices in a cell of a mobile network that deploys a carrier that supports beamforming, disabling, in response to the detecting the presence of the plurality of user devices, carrier aggregation in the cell for a first subset of the plurality of user devices that supports multi-user multiple input, multiple output communications, and activating, after disabling the carrier aggregation, multi user multiple input, multiple output communications for the first subset of the plurality of user devices.

公开(公告)号：US20250080173A1

公开(公告)日：2025-03-06

申请号：US18457474

申请日：2023-08-29

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Jianchun Zhou ,  Yakun Gao ,  Ratish Upadhyay

IPC: H04B7/0452 ,  H04W24/08 ,  H04W72/0453

Abstract: Aspects of the subject disclosure may include, for example, performing a first analysis in respect of a first carrier, the first carrier operative in accordance with a frequency included in a frequency range from 24.25 GHz to 52.60 GHz, inclusive, determining, based on the performing of the first analysis, that a first user equipment (UE) is to be paired with at least one other UE as part of a multi-user multiple-input multiple-output (MU-MIMO) topology in the first carrier, resulting in a first determination, and subjecting the first UE to the MU-MIMO in the first carrier in accordance with the first determination. Other embodiments are disclosed.

公开(公告)号：US20250071649A1

公开(公告)日：2025-02-27

申请号：US18944189

申请日：2024-11-12

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Jianchun Zhou ,  Yakun Gao

IPC: H04W36/30 ,  H04W36/00

Abstract: Aspects of the subject disclosure may include, for example, determining a Reference Signal Received Power (RSRP) and a Signal to Noise Ratio (SNR) for a plurality of carriers at a user equipment (UE) device, the plurality of carriers transmitted by a source group of cells including a source primary cell (PCell) and one or more source secondary cells (SCells) associated with the source PCell, and initiating a handover of communication with the UE device from the source group of cells to a target group of cells, wherein the target group of cells includes a target PCell and one or more target SCells, wherein the initiating the handover is responsive to the RSRP exceeding a predetermined RSRP threshold and the SNR exceeding a predetermined SNR threshold. Other embodiments are disclosed.

公开(公告)号：US20250062797A1

公开(公告)日：2025-02-20

申请号：US18449733

申请日：2023-08-15

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Jianchun Zhou ,  Yakun Gao ,  Ratish Upadhyay

IPC: H04B7/0413 ,  H04B7/06

Abstract: Aspects of the subject disclosure may include, for example, obtaining data, identifying one or more parameters impacting signaling between the device and network infrastructure, analyzing, based on the identifying, the one or more parameters to determine that multiple-input single-output (MISO) or multiple-input multiple-output (MIMO) is to be used in a conveyance of the data from the device to the network infrastructure, resulting in a determination, and utilizing, in accordance with the determination, MISO or MIMO to convey the data from the device to the network infrastructure, the utilizing incorporating cyclic delay diversity (CDD). Other embodiments are disclosed.

公开(公告)号：US12199756B2

公开(公告)日：2025-01-14

申请号：US17079729

申请日：2020-10-26

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Sameer Sangal ,  Jianchun Zhou

IPC: H04L1/00 ,  H04B17/318 ,  H04L5/00

Abstract: Aspects of the subject disclosure may include, for example, obtaining a first indication of a first count of resource blocks in a first cell in which the device is located, obtaining a second indication of a second count of resource blocks allocated to the device, obtaining a third indication of a reference signal received power (RSRP) value for the device, obtaining a fourth indication of a received signal strength indicator (RSSI) value for the device, computing a first reference signal received quality (RSRQ) value for the device based on the first indication, the second indication, the third indication, and the fourth indication, and transmitting a fifth indication of the first RSRQ value. Other embodiments are disclosed.

公开(公告)号：US11838906B2

公开(公告)日：2023-12-05

申请号：US17235045

申请日：2021-04-20

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Jianchun Zhou ,  Wen Yang ,  Yakun Gao ,  Ye Chen

IPC: H04W72/044 ,  H04W72/0446 ,  H04W72/21 ,  H04W72/56 ,  H04W52/14 ,  H04W52/28

CPC classification number: H04W72/0473 ,  H04W52/146 ,  H04W52/281 ,  H04W72/0446 ,  H04W72/21 ,  H04W72/56

Abstract: A method, system, computer readable storage medium, or apparatus provides for receiving a first message from a user equipment (UE), wherein the first message comprises an indication of one or more conditions, wherein the one or more conditions comprises an indication that the UE has a radio mode that comprises new radio (NR); determining a required idle period for long term evolution (LTE) for the UE; determining, based on the first message and the required idle period for LTE, a transmission time interval (TTI) for NR that corresponds to the required idle period for LTE; and sending, to the UE, a second message, wherein the second message comprises an indication of the TTI for NR.

公开(公告)号：US20230319665A1

公开(公告)日：2023-10-05

申请号：US17712874

申请日：2022-04-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Jianchun Zhou ,  Yakun Gao

IPC: H04W36/30 ,  H04W36/00

CPC classification number: H04W36/30 ,  H04W36/0072

Abstract: Aspects of the subject disclosure may include, for example, determining a Reference Signal Received Power (RSRP) and a Signal to Noise Ratio (SNR) for a plurality of carriers at a user equipment (UE) device, the plurality of carriers transmitted by a source group of cells including a source primary cell (PCell) and one or more source secondary cells (SCells) associated with the source PCell, and initiating a handover of communication with the UE device from the source group of cells to a target group of cells, wherein the target group of cells includes a target PCell and one or more target SCells, wherein the initiating the handover is responsive to the RSRP exceeding a predetermined RSRP threshold and the SNR exceeding a predetermined SNR threshold. Other embodiments are disclosed.

公开(公告)号：US20220329374A1

公开(公告)日：2022-10-13

申请号：US17228793

申请日：2021-04-13

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Jianchun Zhou ,  Yakun Gao

IPC: H04L5/00 ,  H04W72/04

Abstract: The described technology is generally directed towards cell reference signal interference reduction. Techniques disclosed herein can be implemented at radio access network (RAN) nodes that use dynamic spectrum sharing (DSS) to send wireless communications according to both a first and a second wireless communication protocol, e.g., according to 4G LTE and 5G NR wireless communication protocols. RAN nodes can limit a cell reference signal transmission rate, thereby reducing interference associated with cell reference signal transmissions.

公开(公告)号：US20210029607A1

公开(公告)日：2021-01-28

申请号：US16520055

申请日：2019-07-23

Applicant: AT&T Intellectual Property I, L.P. ,  AT&T Mobility II LLC

Inventor： Jianchun Zhou ,  Sameer Sangal

IPC: H04W36/20 ,  H04W36/08 ,  H04B17/336 ,  H04W36/24

Abstract: Determining to initiate a user equipment handover event based on a signal-to-interference-plus-noise ratio value is disclosed. The disclosed subject matter can employ the signal-to-interference-plus-noise ratio value in lieu of a reference signal receive power value. In an aspect, a handover based on the signal-to-interference-plus-noise ratio value can generally be determined faster and with greater reliability than basing the handover on the reference signal receive power value. In an aspect, some embodiments can substitute a determined uplink signal-to-interference-plus-noise ratio value for a downlink signal-to-interference-plus-noise ratio value. In some embodiments, a predicted signal-to-interference-plus-noise ratio value can be determined based on historical channel characteristics, hysterical wireless network environment features, or other historical data. A predicted signal-to-interference-plus-noise ratio value can be validated to a determined current signal-to-interference-plus-noise ratio value, permitting a validated predicted value to be employed until a next validation event.