公开(公告)号：US20170099125A1

公开(公告)日：2017-04-06

申请号：US15128258

申请日：2014-11-05

Applicant: Sony Corporation

Inventor： Erik BENGTSSON ,  Kåre AGARDH ,  Rickard LJUNG ,  Vanja PLICANIC SAMUELSSON

IPC: H04L5/00 ,  H04B7/04

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/0452 ,  H04L1/1671 ,  H04L1/1896 ,  H04L5/1469 ,  H04W72/0446 ,  H04W72/085 ,  H04W72/1273 ,  H04W88/08

Abstract: A cellular multiple-input and multiple-output, MIMO, system comprises a base station having a plurality of antennas. Pilot signals are received by the base station in each frame of a sequence of frames (60). The base station analyzes the pilot signals to determine radio channel properties of radio channels between respectively each one of a plurality of terminals and the base station. The sequence of frames (60) comprises frames of a first frame type (61, 63, 64, 68) and frames of a second frame type (62, 69). Each frame of the second frame type (62, 69) have a greater number of time slots in which the base station receives the pilot signals than each frame of the first frame type (61, 63, 64, 68). The frames of the second frame type (62, 69) are included periodically in the sequence of frames (60).

公开(公告)号：US20160134349A1

公开(公告)日：2016-05-12

申请号：US14997736

申请日：2016-01-18

Applicant: Sony Corporation

Inventor： Rickard LJUNG ,  Thomas BOLIN ,  Zhinong YING ,  Erik BENGTSSON

IPC: H04B7/06 ,  H04W72/04 ,  H04B1/3827

CPC classification number: H04B7/0608 ,  H04B1/3827 ,  H04B7/0811 ,  H04B7/0837 ,  H04W72/0406

Abstract: An antenna switching method includes tuning respective signals provided to first and second antennas in a portable electronic device to at least one frequency band. The method may also include connecting the first antenna to an uplink signal path that is for transmissions through the first and second antennas, and performing impedance matching for the first antenna. The method may further include comparing a real-time performance characteristic of the first antenna with a real-time performance characteristic of the second antenna. The method may additionally include, responsive to determining that the second antenna has a stronger real-time performance characteristic than the first antenna while the first antenna is connected to the uplink signal path, switching from the first antenna to the second antenna by connecting the second antenna to the uplink signal path and disconnecting the first antenna from the uplink signal path, and performing impedance matching for the second antenna.

Abstract translation: 天线切换方法包括将提供给便携式电子设备中的第一和第二天线的各个信号调谐到至少一个频带。 该方法还可以包括将第一天线连接到用于通过第一和第二天线的传输的上行链路信号路径，以及对第一天线执行阻抗匹配。 该方法还可以包括将第一天线的实时性能特性与第二天线的实时性能特性相比较。 该方法可以另外包括响应于在第一天线连接到上行链路信号路径时确定第二天线具有比第一天线更强的实时性能特性，通过连接第二天线从第一天线切换到第二天线 天线到上行链路信号路径，并且将第一天线与上行链路信号路径断开，并且对第二天线执行阻抗匹配。