Title:
無線通信システムにおけるウェイクアップ通信
Document Type and Number:
Japanese Patent JP7393546
Kind Code:
B2
Abstract:
A wireless communication device (100) comprises a first transceiver (110) comprising a first frequency synthesizer (112) which comprises a first digitally controlled oscillator (DCO1) and a crystal oscillator (XO). The wireless communication device (100) further comprises a second transceiver (120) comprising a wakeup receiver (Rx2), a second transmitter (Tx2) and a second digitally controlled oscillator (DCO2) connected to the wakeup receiver (Rx2) and second transmitter (Tx2). The wireless communication 10 device (100) further comprises a control unit (170) configured to control operation of the wireless communication device. The second transmitter (Tx2) is configured to transmit periodically a signal to a base station. The signal is modulated by a code identifying the wireless communication device (100) and transmitted at a frequency set by the second digitally controlled oscillator (DCO2).
Inventors:
Showland, Henrik
Wilhelmson, Leif
Wilhelmson, Leif
Application Number:
JP2022531352A
Publication Date:
December 06, 2023
Filing Date:
December 02, 2019
Export Citation:
Assignee:
Telef on Acty Bora Get LM Ericsson (Pable)
International Classes:
H04B1/38; H04B1/16; H04W52/02
Domestic Patent References:
| JP2015529412A | ||||
| JP2010118855A | ||||
| JP2007082057A | ||||
| JP2002152129A |
Foreign References:
| US20190261268 | ||||
| WO2018166638A1 |
Attorney, Agent or Firm:
Yoshitaka Sonoda
Yoshitaka Togashi
Toshiyasu Ishioka
Ryo Fujii
Harumi Kokaji
Yoshitaka Togashi
Toshiyasu Ishioka
Ryo Fujii
Harumi Kokaji
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