公开(公告)号：US12022361B2

公开(公告)日：2024-06-25

申请号：US17472341

申请日：2021-09-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Takahashi ,  Mei Okamoto ,  Kazuma Nishiyasu ,  Naganori Shirakata ,  Junichi Morita

IPC: H04W4/029 ,  H04B17/318 ,  H04W4/33

CPC classification number: H04W4/029 ,  H04B17/318 ,  H04W4/33

Abstract: This position estimation system comprises a first wireless node for forming a wireless area; second wireless nodes which move within the wireless area; a plurality of third wireless nodes which are provided within the wireless area; and a position estimation device which estimates the position of the second wireless nodes on the basis of information indicating wireless reception quality at the third wireless nodes and the second wireless nodes. The position estimation device determines, for each of section areas, and on the basis of information pertaining to time resource capacity for wireless communication directed towards second wireless nodes, section areas which collect, in place of the first wireless node, information containing wireless reception quality at the second wireless nodes, and transmits, to one of third wireless nodes provided in the determined section area, and instruction to collect wireless reception quality at second wireless nodes within said section area.

公开(公告)号：US11940548B2

公开(公告)日：2024-03-26

申请号：US17337105

申请日：2021-06-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yohei Morishita ,  Junji Sato ,  Naganori Shirakata ,  Hidekuni Yomo ,  Kenta Iwasa ,  Kazuma Nishiyasu ,  Mei Okamoto

IPC: H04W4/029 ,  G01S5/02 ,  G01S11/02

CPC classification number: G01S5/0295 ,  G01S5/02521 ,  G01S5/0278 ,  G01S11/02 ,  H04W4/029

Abstract: Provided is an improved estimation and identification device that estimates the position of a plurality of identification targets and identifies the plurality of identification targets. The estimation and identification device has a configuration comprising: a plurality of tracking devices that emit electromagnetic waves or sound waves and detect the position of an identification target on the basis of reflected electromagnetic waves or sound waves from the identification target holding a wireless transmission terminal; a plurality of wireless communications devices that wirelessly communicate with wireless communications terminals and receive identification information for the wireless communications terminals from the wireless communications terminals; and an analysis circuit that identifies the identification target and estimates the position of the identification target, on the basis of the results of the wireless communications results, the detected position of the identification target, and the identification information.

公开(公告)号：US11589275B2

公开(公告)日：2023-02-21

申请号：US17013894

申请日：2020-09-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuma Nishiyasu ,  Naganori Shirakata ,  Junichi Morita ,  Hiroshi Takahashi ,  Mei Okamoto

IPC: H04W36/00 ,  H04W72/04 ,  H04W74/02 ,  H04W72/0446

Abstract: A terminal device includes: transmission circuitry that transmits a connection request to a first access point in order to connect, by a wireless link, to one of the first access point or a second access point each having a superframe in an initial state in which a control channel period is longer than a data channel period; and reception circuitry that receives, as a connection response, information indicating the second access point as information on a connection destination access point from the first access point after the connection request is transmitted.