公开(公告)号：US20190394462A1

公开(公告)日：2019-12-26

申请号：US16480055

申请日：2017-02-28

Applicant: PANASONIC CORPORATION

Inventor： Takeshi MIYAGOSHI ,  Masaki SATO ,  Noriyuki SHIMIZU ,  Hiroaki ASANO ,  Hideki SHINGU

IPC: H04N19/115 ,  H04N19/166

Abstract: In order to enable efficient utilization of an available bandwidth by properly estimating the available bandwidth under conditions in which the available bandwidth significantly changes upon occurrence of communication path switching, an available bandwidth estimation is performed by estimating a current available bandwidth based on historical communication state information i.e. information on a past communication state stored in a storage to control a code amount used in encoding an image; upon occurrence of communication path switching (handover), acquiring a temporary available bandwidth value corresponding to a new (post-handover) communication path; generating new communication state information corresponding to a new communication state based on the temporary available bandwidth value; replacing the historical communication state information stored in the storage with the new communication state information; and estimating a new available bandwidth based on the new communication state information stored in the storage.

公开(公告)号：US20190021036A1

公开(公告)日：2019-01-17

申请号：US16066011

申请日：2016-02-17

Applicant: PANASONIC CORPORATION

Inventor： Noriyuki SHIMIZU ,  Hiroaki ASANO ,  Yasufumi ICHIKAWA

IPC: H04W36/26 ,  H04W76/27 ,  H04W72/04 ,  H04W36/36 ,  H04W72/06 ,  H04W72/08 ,  H04W76/10 ,  H04W36/00 ,  H04W36/08

CPC classification number: H04W36/26 ,  H04W36/0011 ,  H04W36/0061 ,  H04W36/0083 ,  H04W36/08 ,  H04W36/36 ,  H04W72/0486 ,  H04W72/06 ,  H04W72/08 ,  H04W76/10 ,  H04W76/27 ,  H04W80/02 ,  H04W80/06 ,  H04W80/08

Abstract: To allow for selection of a connection-destination suitable for an application when switching from one connection-destination to another, or adding or deleting a connection-destination, a base station apparatus is configured to generate connection-destination candidate information on base station apparatuses as connection-destination candidates connectable to a terminal apparatus, and transmit to the terminal apparatus a connection-destination candidate notification control message including the connection-destination candidate information, and the terminal apparatus selects a new base station apparatus to be used as a new connection-destination based on the connection-destination candidate information and a communication condition required by a user application section, the user application section being configured to perform information processing required by a user concurrently with performing wireless communication.

公开(公告)号：US20220345978A1

公开(公告)日：2022-10-27

申请号：US17763939

申请日：2020-09-18

Applicant: PANASONIC CORPORATION

Inventor： Noriyuki SHIMIZU ,  Hiroaki ASANO ,  Masahisa OKUDA ,  Yoichi NAKAGAWA

IPC: H04W40/12 ,  H04W40/24 ,  H04L45/122 ,  H04W40/08

Abstract: In a network having an edge server disposed therein, to appropriately construct a wireless communication route used in communication between the edge server and a user terminal, a processor of a network control device acquires group information related to grouped base stations in multiple base stations disposed in the network, acquires route information related to one or more wireless communication routes formed by multi-hop communication between the grouped base stations, and transmits the group information and the route information to an edge server connected to one of the base stations or to a user terminal.

公开(公告)号：US20210306932A1

公开(公告)日：2021-09-30

申请号：US16473515

申请日：2017-02-28

Applicant: PANASONIC CORPORATION

Inventor： Noriyuki SHIMIZU ,  Hiroaki ASANO ,  Hideki SHINGU

IPC: H04W40/36 ,  H04W36/30 ,  H04W36/08 ,  H04W24/04

Abstract: To reduce power consumption and enable a quick change from one communication path to another when detecting a decrease in quality of communication for communicating user data, a first base station determines a second base station and a third base station, and then the first base station transmits a connection request message to a terminal, the second base station and the third base station concurrently with transmitting a communication request message to the second base station, and, while the second base station is in communication with the terminal, upon detecting a decrease in quality of communication with the terminal based on a reception status of an uplink signal from the terminal, the second base station transmits a path switching request message to the first base station, which in turn transfers the received path switching request message transmitted from the second base station to the third base station.

公开(公告)号：US20180310243A1

公开(公告)日：2018-10-25

申请号：US16017662

申请日：2018-06-25

Applicant: PANASONIC CORPORATION

Inventor： Masaaki YOSHINO ,  Hiroaki ASANO ,  Yasuharu HASHIMOTO

IPC: H04W48/20 ,  H04W48/16

CPC classification number: H04W48/20 ,  H04W48/16 ,  H04W64/00 ,  H04W84/12

Abstract: For selection of a wireless access point, a terminal apparatus is configured to include a transmitter transmitting terminal information to a communication control apparatus, a receiver receiving access point candidate information from the communication control apparatus, a bandwidth estimator estimating current bandwidth associated with each of the candidate wireless access points included in the access point candidate information, and an access point selector selecting at least one wireless access point for communication from the candidate wireless access points included in the access point candidate information. Terminal information includes information on a communication location where the terminal apparatus communicates with the communication control apparatus and the access point candidate information includes information on candidate wireless access points for the communication location and past bandwidth information acquired associated with each of the candidate wireless access points. The wireless access point is selected based on past bandwidth information and estimated current bandwidth.

公开(公告)号：US20210227443A1

公开(公告)日：2021-07-22

申请号：US17220315

申请日：2021-04-01

Applicant: PANASONIC CORPORATION

Inventor： Noriyuki SHIMIZU ,  Hiroaki ASANO ,  Hideki SHINGU

IPC: H04W36/32 ,  H04W4/029 ,  H04W16/28 ,  H04W36/02 ,  H04W36/24 ,  H04W36/30 ,  H04W64/00 ,  H04W88/08

Abstract: A communication device includes a wireless communication device, a location information acquisition device, a storage and a controller. The wireless communication device wirelessly communicates with a base station used as a connection destination. The location information acquisition device acquires location information on a location of the communication device. The storage stores historical communication information on past communication status. The controller determines a degree of risk of occurrence of reduction in an amount of available communication bandwidth beyond a tolerance limit based on the historical communication information and the location information. The controller further controls a transmission rate for communicating the data based on a result of determination of the degree of risk.

公开(公告)号：US20200382184A1

公开(公告)日：2020-12-03

申请号：US16636194

申请日：2018-06-06

Applicant: PANASONIC CORPORATION

Inventor： Noriyuki SHIMIZU ,  Maho TAKITA ,  Hiroaki ASANO ,  Hideki SHINGU

IPC: H04B7/06 ,  H04B17/318 ,  H04B17/24 ,  H04W28/02

Abstract: In order to prospectively avoid communication failures or reduction in throughput of each user terminal, thereby improving users' satisfaction with communication service, a base station is configured to control wireless communication with a terminal device by using any of multiple transmission beams formed by the base station or those formed by another base station and includes a wireless communication device and a controller configured to acquire correction information used for correcting a measurement value for evaluating reception status of each transmission beam and cause the wireless communication device to transmit the correction information to the user terminal so as to thereby promote the user terminal to use, or inhibit the user terminal from using a specific transmission beam.

公开(公告)号：US20200162987A1

公开(公告)日：2020-05-21

申请号：US16623678

申请日：2018-03-12

Applicant: PANASONIC CORPORATION

Inventor： Noriyuki SHIMIZU ,  Hiroaki ASANO ,  Hideki SHINGU ,  Takeshi MIYAGOSHI

IPC: H04W36/24 ,  H04W36/14 ,  H04W28/20 ,  H04W36/04 ,  H04W36/30 ,  H04W28/22 ,  H04W36/32

Abstract: In order to properly control a communication bandwidth used for communication without increasing load of a network, a communication device includes a controller configured to control a communication bandwidth used for transmitting application data by using a congestion control algorithm, wherein, when a connection destination is changed, the controller acquires an initial value of the communication bandwidth appropriate for the connection destination based on an initial value table, and starts control of the communication bandwidth by using the initial value.

公开(公告)号：US20200187083A1

公开(公告)日：2020-06-11

申请号：US16631730

申请日：2018-06-06

Applicant: PANASONIC CORPORATION

Inventor： Noriyuki SHIMIZU ,  Hiroaki ASANO ,  Hideki SHINGU

IPC: H04W36/32 ,  H04W36/30 ,  H04W4/029 ,  H04W88/08 ,  H04W64/00 ,  H04W16/28 ,  H04W36/02 ,  H04W36/24

Abstract: A communication device is provided and includes: a wireless communication device configured to wirelessly communicate with a base station used as a connection destination; a location information acquisition device configured to acquire location information on a location of the communication device; a storage configured to store historical obstruction information for an obstructed location where decrease in communication quality due to obstruction has occurred before; a controller configured to determine, based on the historical obstruction information and the location information, a degree of risk of occurrence of decrease in communication quality due to obstruction for at least one of a current connection destination that is currently used by the communication device and a future connection destination that is expected to be used by the communication device, and control the connection destination based on a result of determination of the degree of risk.

公开(公告)号：US20190059004A1

公开(公告)日：2019-02-21

申请号：US16130456

申请日：2018-09-13

Applicant: PANASONIC CORPORATION

Inventor： Sojiro NORITA ,  Noriyuki SHIMIZU ,  Hiroaki ASANO

IPC: H04W16/28 ,  H04W64/00

Abstract: In order to quickly establish a communication link between a user terminal and an access point, a communication system comprises: a user terminal; an access point configured to transmit and receive user data to and from the user terminal; a cellular base station assisting wireless communication between the user terminal and the access point; and a control server 4. The user terminal comprises a cellular communicator configured to transmit location information of the user terminal to the control server via the cellular base station. The control server comprises a controller configured to generate communication control information; and a network communicator configured to transmit notification information including the communication control information. The access point comprises a beam controller configured to control a beam pattern used for wireless communication between the access point and the user terminal based on the communication control information.