Wireless communication device

• US 9,432,939 B2
• Filed: 11/03/2015
• Issued: 08/30/2016
• Est. Priority Date: 11/20/2014
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Sugitani, Toshiyuki
• Primary Examiner(s): Lee, John J
• Application Number:
  US14/930,762
• Publication Number:
  US 20160150477A1
• Time in Patent Office: 301 Days
• Field of Search: 455/552.1, 455/414.1, 455/412.2, 455/415, 455/41.2, 455/500, 455/514, 455/550.1, 455/11.1, 455/69, 455/522, 455/572, 455/573
• US Class Current: 1/1
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Provided is a wireless communication device for packet communication. When a battery is mounted, transmission and reception of a message for obtaining information necessary for the packet communication are performed and the information is stored in a first communication information storage unit. In a waiting state, main components for wireless communication are powered off. The main components for the wireless communication are powered on at the time of sensor detection. The packet communication is performed using the information in the first communication information storage unit and the sensor detection is notified.

Claims

1. A wireless communication device that transmits a data packet including a packet number to the other communication party, the wireless communication device comprising:

a battery;

a first storage to which power is supplied from the battery and in which the packet number is stored;

a second storage that is configured as a nonvolatile memory and in which an identification number is stored;

an event detector to which the power is supplied from the battery and that detects an occurrence of an event;

a controller;

a wireless communication interface that performs transmission and reception of the data packet between the wireless communication device and the other communication party, under control of the controller; and

a connection controller that supplies power of the battery to the second storage, the controller, and the wireless communication interface, in a case where the battery is newly mounted, or in a case where the event detector detects the occurrence of the event, and that cuts off the supply of the power to the second storage, the controller, and the wireless communication interface according to an instruction of the controller,

wherein, in a case where the event detector detects the occurrence of the event, the controller generates the data packet including a wireless link establishment request, a message notifying the occurrence of the event, and the packet number that is stored in the first storage, transmits the generated data packet from the wireless communication interface to the other communication party, updates the packet number that is stored in the first storage when a delivery acknowledgement is received from the other communication party, and gives an instruction to disconnect the supply of the power to the connection controller, and

wherein, in a case where the battery is newly mounted, the controller establishes synchronization between the wireless communication device and the other communication party, using identification information that is stored in the second storage, rewrites the packet number that is stored in the first storage, as an initial value that is determined in advance, and gives the instruction to disconnect the supply of the power to the connection controller.

2. The wireless communication device of claim 1,

wherein the event detector is a sensor that detects a window being opened, as the occurrence of the event.