公开(公告)号：US10321460B1

公开(公告)日：2019-06-11

申请号：US14795604

申请日：2015-07-09

Applicant: Sprint Communications Company L.P.

Inventor： Nagi A. Mansour ,  Marouane Balmakhtar ,  Aaron J. Pawlowski ,  Kaushik Goswami

IPC: H04B1/40 ,  H04L27/26 ,  H04W72/04 ,  H04W88/08

Abstract: An Orthogonal Frequency Division Multiplexing (OFDM) access point receives and processes beamforming feedback data from User Equipment (UE) to form a beamforming feedback loop, transmits a beamformed radio signal to the UE, and determines if the beamforming feedback loop is experiencing a beamforming lag condition, and if so, switches to a closed-loop spatial multiplexing transmit protocol. The OFDM access point receives and processes closed-loop spatial multiplexing feedback data from the UE to form a closed-loop spatial multiplexing feedback loop, transmits a closed-loop spatial multiplexed radio signal to the UE, and determines if the closed-loop spatial multiplexing feedback loop is experiencing a spatial multiplexing lag condition, and if so, switches to an open-loop spatial multiplexing transmit protocol. An OFDM access point receives and processes open-loop spatial multiplexing feedback data from the UE to form an open-loop spatial multiplexing feedback loop and transmits an open-loop spatial multiplexed radio signal to the UE.

公开(公告)号：US09137132B1

公开(公告)日：2015-09-15

申请号：US14036145

申请日：2013-09-25

Applicant: Sprint Communications Company L.P.

Inventor： Stephen R. Bales ,  Maneesh Gauba ,  Kaushik Goswami ,  Paul Jacob Sterchi

IPC: H04L12/26

CPC classification number: H04B17/336 ,  H01Q21/28 ,  H04B17/12 ,  H04B17/18 ,  H04B17/318

Abstract: An antenna monitoring system in one example embodiment includes a plurality of analog-to-digital (A/D) converters configured to receive a plurality of tapped antenna signals and generate a plurality of digitized antenna signals, and an antenna monitor coupled to the plurality of A/D converters and coupled to a Base Transceiver Station (BTS) of the distributed antenna system, with the antenna monitor comprising a storage system configured to store an antenna monitor routine and a plurality of per-antenna information, a communication transceiver configured to transfer the plurality of per-antenna information, and a processing system configured to receive the plurality of digitized antenna signals from the plurality of A/D converters, reverse-process the plurality of digitized antenna signals to generate the plurality of per-antenna information, and feed the plurality of per-antenna information back to the BTS, with the BTS using the plurality of per-antenna information to monitor the plurality of antenna sub-systems.

Abstract translation: 一个示例性实施例中的天线监测系统包括多个模拟数字（A / D）转换器，其被配置为接收多个抽头天线信号并产生多个数字化天线信号，以及耦合到多个 A / D转换器并且耦合到分布式天线系统的基站收发台（BTS），天线监视器包括被配置为存储天线监视程序和多个每天线信息的存储系统，配置为传送 所述多个天线信息，以及被配置为从所述多个A / D转换器接收所述多个数字化天线信号的处理系统，对所述多个数字化天线信号进行反向处理，以生成所述多个天线信息，以及 将多个每天线信息馈送回BTS，BTS使用多个每天线信息来监视plu 天线子系统的性能。