公开(公告)号：US20220295234A1

公开(公告)日：2022-09-15

申请号：US17690499

申请日：2022-03-09

Applicant: Panasonic Intellectual Property Management Co., Ltd

Inventor： Akira YAMASAKI ,  Kazuki HASHIMOTO ,  Nobuhiko ARASHIN

IPC: H04W4/06 ,  H04L5/00 ,  H04L61/5069

Abstract: A communication device for performing wireless communication with another communication device, includes a wired communication interface configured to be connected to a wired communication line, a wireless communication interface configured to be connected to the other communication device by wireless communication, an antenna configured to transmit or receive a wireless signal related to the wireless communication, and a processor configured to, in a case that a destination of a first frame received by the wired communication interface indicates a broadcast address or a multicast address, wirelessly transmit a second frame to the other communication device with a modulation scheme and a coding rate set according to a wireless communication environment with the other communication device. The second frame includes the first frame and the second frame has a unicast address indicating a destination of the other communication device.

公开(公告)号：US20190023293A1

公开(公告)日：2019-01-24

申请号：US16139724

申请日：2018-09-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuhiko ARASHIN ,  Takuji MAEDA

IPC: B61L15/00 ,  B61L23/34 ,  H04B7/06 ,  H04B17/318

Abstract: A first antenna group includes one first antenna disposed at one end of a leading car, and another first antenna disposed at one end of a following car. A second antenna group includes one second antenna disposed at the one end of the leading car, the position where the one second antenna is disposed being different from the position where the one first antenna is disposed in a direction orthogonal to a travel direction of the leading car, and another second antenna disposed at the one end of the following car. A measurement unit measures radio wave strength between a pair of first antennas during communication via the first antenna group. A controller is enabled to make a switch from the first antenna group to the second antenna group when the radio wave strength is less than a predetermined value.

公开(公告)号：US20150110074A1

公开(公告)日：2015-04-23

申请号：US14585766

申请日：2014-12-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira YAMASAKI ,  Nobuhiko ARASHIN

IPC: H04W36/00

CPC classification number: H04W36/0011 ,  H04L69/18 ,  H04W36/00 ,  H04W36/14 ,  H04W84/12

Abstract: A wireless communication apparatus uses a Wi-Fi system to transmit to another wireless communication apparatus a WiGig switching request frame (F1) requesting that the communication method for communicating with another wireless communication apparatus be switched from the Wi-Fi system to a WiGig system. The wireless communication apparatus uses RSSI when the WiGig switching request frame (F1) was received to determine whether to allow the switch from the Wi-Fi system to the WiGig system, and uses the Wi-Fi system to transmit to the wireless communication apparatus a WiGig switching response frame (F2) indicating the result of the determination.

Abstract translation: 无线通信装置使用Wi-Fi系统向另一无线通信装置发送请求将与另一无线通信装置进行通信的通信方法从Wi-Fi系统切换到WiGig系统的WiGig切换请求帧（F1）。 当接收到WiGig切换请求帧（F1）以确定是否允许从Wi-Fi系统切换到WiGig系统时，无线通信装置使用RSSI，并且使用Wi-Fi系统向无线通信装置发送 WiGig切换响应帧（F2）指示确定的结果。