公开(公告)号：AU2017339375B2

公开(公告)日：2020-01-30

申请号：AU2017339375

申请日：2017-09-27

Applicant: QUALCOMM INC

Inventor： YOO TAESANG ,  VASUDEVAN DINKAR ,  HOSSEINI SEYEDKIANOUSH ,  SUN JING ,  ZHANG XIAOXIA ,  MALLIK SIDDHARTHA ,  MONTOJO JUAN

IPC: H04B17/30 ,  H04B7/024 ,  H04B17/11 ,  H04L25/02 ,  H04L45/28

Abstract: Wireless communications systems and methods related to over-the-air uplink-downlink (UL-DL) reciprocity calibration. A central unit transmits downlink (DL) calibration reference signal (RS) and a calibration request. The central unit receives, in response to the calibration request, a first uplink (UL) calibration RS and a first DL channel estimate associated with a first transmission point (TP) and a first wireless communication device. The central unit transmits a DL coordinated multipoint (CoMP) joint transmission signal according to an uplink-downlink (UL-DL) reciprocity calibration. The UL-DL reciprocity calibration is based on at least a first UL channel estimate based on the first UL calibration RS, the first DL channel estimate, a second UL channel estimate associated with a second TP and the first wireless communication device, and a second DL channel estimate associated with the second TP and the first wireless communication device.

公开(公告)号：ES2897884T3

公开(公告)日：2022-03-03

申请号：ES17709841

申请日：2017-02-17

Applicant: QUALCOMM INC

Inventor： YOO TAESANG ,  VASUDEVAN DINKAR ,  SUN JING ,  ZHANG XIAOXIA ,  MONTOJO JUAN

IPC: H04L27/26

Abstract: Un método de comunicación inalámbrica en una entidad de programación que comprende: comunicarse (860) con un UE usando una señal con una primera longitud del prefijo cíclico, CP, (520-a, 620-a, 730- a); recibir una solicitud de longitud del CP (870) desde el UE; configurar (875) una segunda longitud del CP específico para el UE basándose, al menos en parte, en la solicitud de longitud del CP (870); transmitir (880) una pluralidad de paquetes de datos al UE, cada uno de los paquetes de datos comprende una indicación del CP dinámico que indica la segunda longitud del CP; y comunicarse (890) con el UE usando la señal con la segunda longitud del CP específico para el UE basándose, al menos en parte, en la indicación del CP dinámico.

公开(公告)号：AU2017339375A1

公开(公告)日：2019-03-21

申请号：AU2017339375

申请日：2017-09-27

Applicant: QUALCOMM INC

Inventor： YOO TAESANG ,  VASUDEVAN DINKAR ,  HOSSEINI SEYEDKIANOUSH ,  SUN JING ,  ZHANG XIAOXIA ,  MALLIK SIDDHARTHA ,  MONTOJO JUAN

IPC: H04B17/30 ,  H04B7/024 ,  H04B17/11 ,  H04L25/02 ,  H04L45/28

Abstract: Wireless communications systems and methods related to over-the-air uplink-downlink (UL-DL) reciprocity calibration. A central unit transmits downlink (DL) calibration reference signal (RS) and a calibration request. The central unit receives, in response to the calibration request, a first uplink (UL) calibration RS and a first DL channel estimate associated with a first transmission point (TP) and a first wireless communication device. The central unit transmits a DL coordinated multipoint (CoMP) joint transmission signal according to an uplink-downlink (UL-DL) reciprocity calibration. The UL-DL reciprocity calibration is based on at least a first UL channel estimate based on the first UL calibration RS, the first DL channel estimate, a second UL channel estimate associated with a second TP and the first wireless communication device, and a second DL channel estimate associated with the second TP and the first wireless communication device.