公开(公告)号：US10886991B2

公开(公告)日：2021-01-05

申请号：US16419432

申请日：2019-05-22

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

Inventor： Salam Akoum ,  Xiaoyi Wang ,  Ralf Bendlin

IPC: H04B7/06 ,  H04B17/382 ,  H04L25/02

Abstract: Facilitating sparsity adaptive feedback in the delay doppler domain in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a method can comprise determining, by a first device comprising a processor, a channel covariance matrix in a time-frequency domain based on a channel estimation associated with reference signals received from a second device. The method also can comprise decomposing, by the first device, the channel covariance matrix into a group of component matrices. Further, the method can comprise transforming, by the first device, respective matrices of the group of component matrices into respective covariance matrices in a delay doppler domain. The method also can comprise determining, by the first device, channel state information feedback in the delay doppler domain.

公开(公告)号：US10834667B2

公开(公告)日：2020-11-10

申请号：US16573332

申请日：2019-09-17

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

Inventor： Ralf Bendlin ,  Aditya Chopra ,  Arunabha Ghosh ,  Abdulrauf Hafeez

IPC: H04W4/00 ,  H04W48/16 ,  H04W16/14 ,  H04W4/70

Abstract: Various embodiments disclosed herein provide for facilitating a discontinuous access to unlicensed spectrum in a new radio access environment. According an embodiment, a system can comprise performing a scanning procedure that determines whether a first subband and a second subband is available for transmission. The system can further facilitate determining whether the first subband and the second subband are adjacent, wherein a first channel formed at the first subband comprising a first guard band and a second channel formed at the second subband comprising a second guard band that is adjacent to the first guard band. The system can further facilitate in response to determining that the first subband and the second subband are adjacent and available for transmission, eliminating the first guard band and the second guard band.

公开(公告)号：US10834632B2

公开(公告)日：2020-11-10

申请号：US16137748

申请日：2018-09-21

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：US20200351928A1

公开(公告)日：2020-11-05

申请号：US16934106

申请日：2020-07-21

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

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

IPC: H04W72/12 ,  H04W4/06

Abstract: The described technology is generally directed towards operating a user equipment node as a scheduler user equipment (e.g., which can be a local manager of other nodes in a group). The scheduler user equipment receives a scheduling request for the scheduling of the resources for transmission of data by a transmitter user equipment, and based on the traffic type requested, schedules the transmitter user equipment and receiver user equipment(s) with scheduling data/allocated radio resources. The transmitter user equipment can directly transmit to the receiver user equipment(s) on the allocated radio resources, e.g., without further involvement of the scheduler user equipment/local manager. For cellular data, the scheduler user equipment can schedule the transmitter user equipment to transmit to the scheduler user equipment as a receiver node.

公开(公告)号：US10820290B2

公开(公告)日：2020-10-27

申请号：US16101917

申请日：2018-08-13

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

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

IPC: H04W56/00 ,  H04W74/08 ,  H04B7/26 ,  H04W88/04 ,  H04W92/02 ,  H04W74/00

Abstract: An integrated access and backhaul network is provided with network nodes that can establish timing synchronization with any other network nodes. In an embodiment, network nodes in a multi-hop integrated access and backhaul network have a hop order of n, wherein n represents a number of hops from a node connected to the core network via a wired connection. In an embodiment, instead of using the network node with a hop order of 0 as the timing synchronization reference for over-the-air synchronization, any network node can use any other network node as a synchronization reference. A relay node can first establish a wireless link to said arbitrary node. Said wireless link is then used to synchronize the relay or IAB node using a Precision Time Protocol (PTP) implementation.

公开(公告)号：US10813053B2

公开(公告)日：2020-10-20

申请号：US16582087

申请日：2019-09-25

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

Inventor： Arunabha Ghosh ,  Thomas Novlan ,  Xiaoyi Wang ,  Ralf Bendlin ,  Aditya Chopra

IPC: H04B7/15 ,  H04W52/14 ,  H04W88/10 ,  H04L5/00 ,  H04W56/00

Abstract: Power control can be employed, whereby a power control adjustment can be determined by a relay distributed unit (DU) device, based on a measurement of the power level of received access uplink transmissions, and a measurement of the power level of a reference signal received from a donor DU via a backhaul downlink transmission. The power control adjustment can be transmitted to the donor distributed unit device, which uses the power control adjustment to reduce the amount of power of downlink transmissions to the relay distributed unit device.

公开(公告)号：US10757700B2

公开(公告)日：2020-08-25

申请号：US16153794

申请日：2018-10-07

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

Inventor： Ralf Bendlin ,  Thomas Novlan

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04W72/12 ,  H04W56/00 ,  H04W88/04 ,  H04W88/14

Abstract: Facilitating frame structure coordination in wireless communication systems with integrated access and backhaul links in advanced networks (e.g., 4G, 5G, and beyond) is provided herein. Operations of a system can comprise facilitating a first configuration of a first group of flexible symbols and facilitating a second configuration of a first pattern defined for an uplink transmission. Further, the operations can comprise facilitating a third configuration of a second pattern defined for a downlink transmission and facilitating a fourth configuration of a second group of flexible symbols. Flexible symbols can be symbols within a slot that are not defined as uplink symbols or downlink symbols.

公开(公告)号：US10728004B2

公开(公告)日：2020-07-28

申请号：US16395347

申请日：2019-04-26

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

Inventor： Xiaoyi Wang ,  Ralf Bendlin ,  Arunabha Ghosh ,  SaiRamesh Nammi

IPC: H04L5/00

Abstract: An early termination system for blind decoding is provided to decrease the computational resources utilized when decoding the physical resources, and decrease the time spent decoding. A blind decoding priority list can be used by the mobile device to preferentially decode specific physical resource elements as it specifies the order of all the candidate physical downlink control channels (PDCCHs). When the physical resource elements are decoded, if there is no more downlink control information in that transmission time interval, the downlink control information can include a termination bit, and the mobile device, upon identifying the termination bit can cease blind decoding of the remainder candidates. In this way, the blind decoding process more quickly identifies the downlink control information, and subsequent blind decoding is halted.

公开(公告)号：US20200229141A1

公开(公告)日：2020-07-16

申请号：US16245635

申请日：2019-01-11

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

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

IPC: H04W72/02 ,  H04W88/04 ,  H04W72/12 ,  H04W8/24 ,  H04W72/04

Abstract: To increase network efficiency, a user equipment (UE) can be appointed as a local manager to coordinate the allocation of resources used by other UEs. For example, the network can promote the UE as a local manager and assign the local manager a resource pool. The local manager can then broadcast synchronization signals to let the other UEs associate themselves with the local manager. After the other UEs are synced with the local manager, the local manager can allocate resources to the other UEs. Based on report data regarding the local managers management procedures, the network can maintain the UE as the local manager or demote the UE from local manager status.

公开(公告)号：US20200212970A1

公开(公告)日：2020-07-02

申请号：US16813824

申请日：2020-03-10

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

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

IPC: H04B7/0452 ,  H04L5/00 ,  H04L12/66 ,  H04B7/14

Abstract: Various embodiments disclosed herein provide for an enhanced timing advance scheme to support MU-MIMO in an integrated access and backhaul system. The timing advance scheme disclosed herein aligns the arrival time between backhaul links and access links to enable MU-MIMO gain at the receiver side. In the integrated access and backhaul system, which comprises distributed nodes, the timing advance offset for an access link transmission (a transmission to a node further away in hops from the core network, or to a user equipment device) can be modified by offsetting it with the timing advance of the backhaul link (e.g., from a parent node). This enables the arrival time for transmissions, both access link transmissions from the UE or child node, and backhaul link transmissions from a parent node to arrive at the same time.