公开(公告)号：US09723586B2

公开(公告)日：2017-08-01

申请号：US14923067

申请日：2015-10-26

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

Inventor： Vaneet Aggarwal ,  Rittwik Jana ,  Sarat Puthenpura ,  Nemmara K. Shankaranarayanan

IPC: H04M11/04 ,  H04W64/00 ,  H04W4/04 ,  G01S19/06 ,  G01S5/02 ,  H04B17/318 ,  H04W24/08

CPC classification number: H04W64/00 ,  G01S5/0252 ,  G01S19/06 ,  H04B17/318 ,  H04W4/04 ,  H04W24/08 ,  H04W64/006

Abstract: A method, computer readable storage device and an apparatus for locating a mobile endpoint device in an indoor environment are disclosed. For example, the method generates a location map having a predicted signal strength for each respective location on the location map, receives a signal strength associated with the mobile endpoint device within the indoor environment, compares the signal strength to the location map having the predicted signal strength for each respective location on the location map and locates the mobile endpoint device as being at a particular location within the indoor environment.

公开(公告)号：US09173067B2

公开(公告)日：2015-10-27

申请号：US14094355

申请日：2013-12-02

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

Inventor： Vaneet Aggarwal ,  Rittwik Jana ,  Sarat Puthenpura ,  Nemmara K. Shankaranarayanan

IPC: H04W24/00 ,  H04W4/04 ,  G01S19/06 ,  H04W64/00

CPC classification number: H04W64/00 ,  G01S5/0252 ,  G01S19/06 ,  H04B17/318 ,  H04W4/04 ,  H04W24/08 ,  H04W64/006

Abstract: A method, computer readable storage device and an apparatus for locating a mobile endpoint device in an indoor environment are disclosed. For example, the method generates a location map having a predicted signal strength for each respective location on the location map, receives a signal strength associated with the mobile endpoint device within the indoor environment, compares the signal strength to the location map having the predicted signal strength for each respective location on the location map and locates the mobile endpoint device as being at a particular location within the indoor environment.

Abstract translation: 公开了一种用于在室内环境中定位移动终端设备的方法，计算机可读存储设备和装置。 例如，该方法生成具有针对位置图上的每个相应位置的预测信号强度的位置图，接收与室内环境内的移动终端设备相关联的信号强度，将信号强度与具有预测信号的位置图进行比较 在位置图上的每个相应位置的强度，并将移动端点设备定位在室内环境中的特定位置。

公开(公告)号：US11658843B2

公开(公告)日：2023-05-23

申请号：US17407342

申请日：2021-08-20

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

Inventor： Vaneet Aggarwal ,  Rittwik Jana ,  Christopher W. Rice ,  Nemmara K. Shankaranarayanan

IPC: H04L12/40 ,  H04L1/1829 ,  H04L1/1867 ,  H04L5/14

CPC classification number: H04L12/40013 ,  H04L1/188 ,  H04L1/1854 ,  H04L1/1887 ,  H04L5/14

Abstract: Full-duplex communications are provided by modifying the Media Access Control sub-layer of communication node protocols. The modification allows communication nodes to communicate with one another in full-duplex, where each node transmits and receives data simultaneously with other nodes in a single frequency. A timing of the simultaneous data transmissions, acknowledgments, and short-interframe-space waiting periods can be determined based on network-allocation-vector data transmitted in association with request-to-send or clear-to-send signals.

公开(公告)号：US11044069B2

公开(公告)日：2021-06-22

申请号：US16550820

申请日：2019-08-26

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

Inventor： Vaneet Aggarwal ,  Nemmara K. Shankaranarayanan

IPC: H04L5/14 ,  H04W28/18

Abstract: Disclosed herein are a systems and method for using frequency tones to schedule full-duplex communications between at least two full-duplex communication nodes. Communication nodes having data to transmit send, as part of two contention rounds, two separate and randomly selected frequency tones. In the first contention round, all nodes having data to transmit simultaneously transmit a frequency tone. Based on these first frequency tones, groups of nodes are formed. Each group of nodes in turn transmits a second set of frequency tones, and a schedule of full-duplex communications is created based on the second frequency tones.

公开(公告)号：US10560244B2

公开(公告)日：2020-02-11

申请号：US13949704

申请日：2013-07-24

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

Inventor： Rittwik Jana ,  Vaneet Aggarwal ,  Lusheng Ji ,  Rajesh Krishna Panta ,  Kadangode K. Ramakrishnan ,  Christopher W. Rice ,  Nemmara K. Shankaranarayanan ,  Vinay Anant Vaishampayan

IPC: H04L5/00 ,  H04L5/14

Abstract: Disclosed herein are systems, methods, and computer-readable storage devices for reducing inter-cellsite interference during full-duplex communication. A system receives a channel amplitude and a phase estimate between a first station and a second station, the first station and the second station creating inter-cellsite interference on a channel during full-duplex communications. The system calculates a level of the inter-cellsite interference between the first station and the second station based on the channel amplitude and the phase estimate and generates a cancellation signal based on the inter-cellsite interference. The system then communicates the cancellation signal to the first station for transmission with additional data during additional full-duplex communications.

公开(公告)号：US10396969B2

公开(公告)日：2019-08-27

申请号：US14809824

申请日：2015-07-27

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

Inventor： Vaneet Aggarwal ,  Nemmara K. Shankaranarayanan

IPC: H04L5/14 ,  H04W28/18

Abstract: Disclosed herein are a systems and method for using frequency tones to schedule full-duplex communications between at least two full-duplex communication nodes. Communication nodes having data to transmit send, as part of two contention rounds, two separate and randomly selected frequency tones. In the first contention round, all nodes having data to transmit simultaneously transmit a frequency tone. Based on these first frequency tones, groups of nodes are formed. Each group of nodes in turn transmits a second set of frequency tones, and a schedule of full-duplex communications is created based on the second frequency tones.

公开(公告)号：US10205691B2

公开(公告)日：2019-02-12

申请号：US15464256

申请日：2017-03-20

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

Inventor： Vaneet Aggarwal ,  Rittwik Jana ,  Gerald Michael Karam ,  John F. Murray ,  Christopher W. Rice

IPC: G06F15/16 ,  H04L12/58 ,  H04W4/021

Abstract: Methods and devices for providing presence based messaging are disclosed. For example, a method receives a message including a message content, an identifier of a recipient and a presence parameter. The presence parameter may comprise a speed parameter pertaining to a speed of a device associated with the recipient or a mood parameter pertaining to a mood of the recipient. The method then stores the message and delivers the message to the device associated with the recipient when the presence parameter is satisfied.

公开(公告)号：US10159096B2

公开(公告)日：2018-12-18

申请号：US13796091

申请日：2013-03-12

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

Inventor： Vaneet Aggarwal ,  Nemmara K. Shankaranarayanan

IPC: H04W74/08 ,  H04W84/12

Abstract: In a system having a full-duplex node, a half-duplex node and an access point, modifying a parameter such as a backoff timing such that access probabilities are adjusted for at least one of the access point, the full-duplex node and the half-duplex node. Based on channel access achieved after modifying the backoff timing, communication occurs between one of the full-duplex node and a half-duplex node with the access point. The modified backoff timing can operate independently or in coordination with backoff timers from any other nodes within a system.

公开(公告)号：US10116405B2

公开(公告)日：2018-10-30

申请号：US15602586

申请日：2017-05-23

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

Inventor： Vaneet Aggarwal ,  Dinesh Bharadia ,  Rittwik Jana ,  Christopher W. Rice ,  Nemmara K. Shankaranarayanan

IPC: H04L1/02 ,  H04J11/00 ,  H04L25/03 ,  H04B7/024 ,  H04L25/02 ,  H04L12/26 ,  H04B1/12 ,  H04L5/14

Abstract: A system that incorporates the subject disclosure may include, for example, determining an interference based on a channel gain for each signal of a group of signals received at a receiver from a group of transmitters. A determination is made of an interference value based on a group of interference signals received at a receiver from a group of transmitters, wherein the interference value is based on channel gains that are estimated for the group of transmitters, and wherein a portion of the interference is self-interference generated from transmitting and receiving at a same time. One of an analog time domain cancellation, a digital time domain cancellation or both, is performed responsive to a determination that the interference value does not satisfy a threshold range of an analog-to-digital converter of the receiver. Other embodiments are disclosed.

公开(公告)号：US20180004667A1

公开(公告)日：2018-01-04

申请号：US15199475

申请日：2016-06-30

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

Inventor： Yu Xiang ,  Yih-Farn Robin Chen ,  Vaneet Aggarwal ,  Tian Lan

IPC: G06F12/0846 ,  H04L29/08

CPC classification number: H04L67/1097 ,  G06F3/0611 ,  G06F3/0643 ,  G06F3/0656 ,  G06F3/067 ,  G06F7/36 ,  G06F12/0871 ,  G06F2212/1024 ,  G06F2212/154 ,  G06F2212/261 ,  G06F2212/311 ,  G06F2212/463 ,  Y02D10/13

Abstract: Encoding a file into a plurality of chunks, wherein a subset of the plurality of chunks may be used to create a functional equivalent of the file. At least one additional chunk is created from the plurality of chunks. The at least one additional chunk is directed to be stored in a cache memory and the plurality of chunks are directed to be stored on at least one storage node. Upon demand for the file, at least one additional chunk is cased to be retrieved from the cache and at least a portion of the plurality of chunks are caused to be retrieved from the at least one storage node and the functional equivalent of the file is constructed through utilization of the at least one additional chunk and the portion of the plurality of chunks.