公开(公告)号：US20210314047A1

公开(公告)日：2021-10-07

申请号：US17346167

申请日：2021-06-11

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

Inventor： SaiRamesh Nammi ,  Arunabha Ghosh

IPC: H04B7/06 ,  H04L1/18 ,  H04W24/10 ,  H04L1/00

Abstract: Fast calculation of channel state information using demodulation reference signals (DM-RS) is provided herein. Channel state information is traditionally calculated based on the channel state reference signals (CS-RS). Demodulation reference signals, which are used for channel estimation for a data channel, are transmitted at different times than CS-RS however, and so some portions of the channel state information including layer indicator (LI) and channel quality indicator (CQI) can be calculated based on the demodulation reference signals, allowing a network to adapt more quickly to changing channel conditions, without having to transmit a CS-RS. Generally, precoding matrix indicator and rank indicator, which cannot be determined based on the DM-RS, don't change as often and are more stable over time, thus do not need to be calculated as frequently as the LI and CQI.

公开(公告)号：US11140668B2

公开(公告)日：2021-10-05

申请号：US16016085

申请日：2018-06-22

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

Inventor： SaiRamesh Nammi ,  Salam Akoum ,  Arunabha Ghosh

IPC: H04W72/04 ,  H04B7/0413 ,  H04B7/06 ,  H04W84/04

Abstract: A base station device can transmit data via multiple data channels to a single user equipment device. Each of the multiple data channels can be configured and scheduled via respective downlink control channels to the user equipment device. In an embodiment, the first data channel can be mapped to multiple layers, with a modulation and coding scheme (MCS) assigned based on the average channel quality indicator (CQI) of the layers. One or more of the layers can have a higher CQI however, capable of supporting an additional transmission. The base station device can then facilitate establishing a second data channel to the layer with the higher CQI. The MCS assigned to the second data traffic channel can be based on the CQI of the layer, or based on a difference between the average CQI of the layers and the CQI of the layer.

公开(公告)号：US11140577B2

公开(公告)日：2021-10-05

申请号：US17061043

申请日：2020-10-01

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

Inventor： Ralf Bendlin ,  Arunabha Ghosh ,  Aditya Chopra

IPC: H03M1/00 ,  H04W28/06 ,  H04B7/0456

Abstract: Facilitating energy-efficient wireless communications for advanced networks (e.g., 4G, 5G, and beyond) with low-resolution digital-to-analog converters is provided herein. Operations of a system can comprise determining first values. Respective values of the first values can be digital samples of transmission and reception chains determined based on symbols transformed from bits. The operations can also comprise facilitating a quantization of the first values resulting in second values. Facilitating the quantization can be based on a cost function associated with processing the first values. Further, the operations can comprise outputting the second values as a continuous time signal over antennas of a base station device. The second values can comprise fewer values than the first values.

公开(公告)号：US20210266889A1

公开(公告)日：2021-08-26

申请号：US17319030

申请日：2021-05-12

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

Inventor： Salam Akoum ,  Milap Majmundar ,  Ralf Bendlin ,  Arunabha Ghosh ,  Thomas Novlan ,  Xiaoyi Wang

IPC: H04W72/04 ,  H04W72/08 ,  H04W16/28 ,  H04B7/06 ,  H04B7/08 ,  H04B7/155

Abstract: To facilitate signal alignment for an integrated access backhaul (IAB) node, a system can determine a subset of beams that can be used for communication transmissions. Based on a signal quality associated with the subset of beams, the system can indicate that the subset of beams is to be used for the communication transmission. Consequently, the subset of the beams or another subset of the subset of the beams can be utilized for the communication transmission based on the signal quality of the beams.

公开(公告)号：US11096040B2

公开(公告)日：2021-08-17

申请号：US16796352

申请日：2020-02-20

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

Inventor： Ralf Bendlin ,  Arunabha Ghosh ,  Thomas Novlan ,  Xiaoyi Wang ,  Milap Majmundar

IPC: H04W76/28 ,  H04W8/18 ,  H04W72/04 ,  H04W88/06 ,  H04W52/02

Abstract: One subscriber identity module (SIM) can transmit data in active mode while another SIM is in an idle mode. However, paging for the SIM in idle mode can occur based on a discontinuous reception configuration (DRX) cycle of the active SIM. For example, when the DRX of the active SIM indicates that the active SIM is in an idle state, then the SIM that is currently in an idle state can send messages and vice versa. The DRX cycle information can be exchanged between a first core network and a second core network. Each core network can belong to the same or different mobile network operator and can have separate radio access networks (RAN) or share the RAN. The DRX cycle information and/or a time-division multiplexing (TDM) pattern can be exchanged over the air via a system information broadcast message.

公开(公告)号：US20210242979A1

公开(公告)日：2021-08-05

申请号：US17237025

申请日：2021-04-21

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

Inventor： Xiaoyi Wang ,  Arunabha Ghosh ,  Salam Akoum ,  SaiRamesh Nammi

IPC: H04L1/18 ,  H04L1/00 ,  H04W4/40

Abstract: Intelligent hybrid automatic repeat request (HARQ) feedback can better support link adaption. Thus, in addition to the traditional HARQ feedback, which is to relay acknowledgement (ACK) and negative acknowledgement (NAK) data based on a decoding result, a new state for the HARQ feedback can be represented as “ACK+”. Consequently, ACK+ can be used to indicate to the network that a modulation and coding scheme (MCS) of a current data packet is too conservative, and the user equipment (UE) is capable of supporting a more aggressive MCS.

公开(公告)号：US11063729B2

公开(公告)日：2021-07-13

申请号：US16574484

申请日：2019-09-18

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

Inventor： SaiRamesh Nammi ,  Saeed Ghassemzadeh ,  Arunabha Ghosh

IPC: H04L5/00 ,  H04W76/27 ,  H04W72/04

Abstract: Various embodiments disclosed herein provide for switching between non-orthogonal and orthogonal multiple access protocols dynamically. A base station device can determine whether a user equipment device on a communication link should use a non-orthogonal multiple access system or an orthogonal multiple access system based on one or more attributes of the communication link, and send an indication of the selection to the user equipment device. The base station device can indicate the selection using a spreading factor parameter that is either equal to one or greater than one. If the spreading factor parameter is equal to one, that can indicate to the user equipment device to use an orthogonal multiple access system, whereas if the spreading factor parameter is greater than one, that can indicate to the user equipment device to use a non-orthogonal multiple access system.

公开(公告)号：US11057794B2

公开(公告)日：2021-07-06

申请号：US16732416

申请日：2020-01-02

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

Inventor： SaiRamesh Nammi ,  Ralf Bendlin ,  Arunabha Ghosh

IPC: H04W56/00 ,  H04W28/06 ,  H04L1/00 ,  H04L1/18 ,  H04W28/04 ,  H03M13/00

Abstract: An adaptive downlink control channel structure is utilized for control channel transmission for 5G and other next generation wireless systems. Moreover, the adaptive downlink control channel structure can utilize a reduced length/size to decrease signaling overhead for each transport block. In an aspect, a first downlink control channel structure for a data transmission can be utilized to implicitly indicate redundancy version (RV) and a second downlink control channel structure for a subsequent data transmission can be utilized to explicitly indicate the RV. In another aspect, the RV can be indicative via an adaptive bit load. Further, in yet another aspect, the RV can be indicated based on a joint encoding of RV and new data indicator (NDI) information.

公开(公告)号：US20210195389A1

公开(公告)日：2021-06-24

申请号：US17190506

申请日：2021-03-03

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

Inventor： Thomas Novlan ,  Xiaoyi Wang ,  Arunabha Ghosh ,  Milap Majmundar ,  Andrew Thornburg

IPC: H04W4/40 ,  H04W76/15 ,  H04W4/08 ,  G08G1/00 ,  H04W72/04 ,  H04W8/14 ,  H04W24/10 ,  H04W12/06 ,  H04W84/20 ,  H04W76/14

Abstract: The described technology is generally directed towards a multi-connectivity (three or more simultaneous communication links) framework in a wireless communication network, including aspects and components that support the operation of New Radio vehicle-to-everything (V2X) services. Aspects of the framework include initial access and V2X establishment, local manager selection, sidelink and cellular resource configuration, mobility and measurements (and reporting), group communication and vehicular platooning support, and V2X configuration and local manager association.

公开(公告)号：US11032721B2

公开(公告)日：2021-06-08

申请号：US15783810

申请日：2017-10-13

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

Inventor： Ralf Bendlin ,  Thomas Novlan ,  Arunabha Ghosh ,  Saeed Ghassemzadeh

IPC: H04W24/02 ,  H04B17/318 ,  H04W24/08 ,  H04W64/00 ,  H04W24/10 ,  H04B17/17

Abstract: An example method may include a processing system of a cellular network having a processor receiving, from a mobile endpoint device, a measurement of a performance indicator, a location, and spatial orientation information, the measurement of the performance indicator based upon at least one wireless signal from a base station of the cellular network, and adjusting at least one aspect of the cellular network in response to the measurement of the performance indicator, the location, and the spatial orientation information. Another example method may include a processing system of a mobile endpoint device having a processor receiving a wireless signal from a base station of a cellular network, capturing a measurement of a performance indicator based upon the wireless signal, recording a location and spatial orientation information, and transmitting to the cellular network the measurement of the performance indicator, the location, and the spatial orientation information.