Title:
無線通信方法及び無線通信システム
Document Type and Number:
Japanese Patent JP7065505
Kind Code:
B2
Abstract:
To promptly update route selection information essential for route selection control.SOLUTION: A radio communication method includes: transmitting, when a first lower level device 3-3 determines that synchronous signal reception is difficult, a relief signal S1 informing of a difficult state of reception from the first lower level device 3-3 to a first device 3-1; transmitting, based on the relief signal S1, an instruction signal, which prompts for the transmission of a relief synchronous signal to set a new synchronous state, from the first device 3-1 to a plurality of lower level devices 31; and based on the instruction signal, transmitting the relief synchronous signal from each of the plurality of lower level devices 31, which are different from the first lower level device 3-3, to the first lower level device 3-3, to maintain a synchronous state between a relief device 3-4 having transmitted the relief synchronous signal received by the first lower level device 3-3 and the first lower level device.SELECTED DRAWING: Figure 4
Inventors:
Fumihide Kojima
Application Number:
JP2018064493A
Publication Date:
May 12, 2022
Filing Date:
March 29, 2018
Export Citation:
Assignee:
National Institute of Information and Communications Technology
International Classes:
H04W84/18; H04W56/00
Domestic Patent References:
| JP2014023085A | ||||
| JP2011061571A | ||||
| JP2007142647A |
Foreign References:
| US20060215588 |
Other References:
Benjamin A. Rolfe et al.,"Proposed text for MLME-SCAN changes",IEEE P802.15-06-0192-02-004a,[online],2006年04月24日,インターネット,[検索日2022年3月25日]
Fumihide Kojima et al.,"Research, development and testbed on Smart Utility Networks by IEEE standard",IEEE 802. 15-11-0633-01-0000,[online],2011年09月19日,インターネット,[2022年3月25日]
Fumihide Kojima et al.,"Research, development and testbed on Smart Utility Networks by IEEE standard",IEEE 802. 15-11-0633-01-0000,[online],2011年09月19日,インターネット
Attorney, Agent or Firm:
Yasuhiko Moto