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Title:
DATA RELAY SYSTEM, DATA RELAY METHOD AND RELAY DEVICE
Document Type and Number:
Japanese Patent JP2012070406
Kind Code:
A
Abstract:

To eliminate restriction on the connection of a relay device located in the middle of a transmission section, enabling accommodation of a new terminal, when performing data relay transmission between devices located at a remote distance using a single frequency.

By enabling the accommodation of a new terminal when performing data relay transmission between the devices located at a remote distance using a single frequency, the restriction on the connection of a relay device located in the middle of a transmission section is eliminated. A data relay system includes: a Master 10; REP 20, 30 connected in time division multiple access to the Master 10, for relaying data originated from the Master 10 side and forwarded to the Master 10 side, using single frequency (frequency F1) signals; and Slaves 21, 22, 31-33 connected in time division multiple access to the REP 20, 30. Each REP 20, 30 works as a Master of the Slaves 21, 22, 31-33 connected in time division multiple access to the self-REP.


Inventors:
OGUCHI KAZUMI
YAMADA HIROTOSHI
ODAKA KAZUNORI
KOBAYASHI TAKESHI
Application Number:
JP2011241435A
Publication Date:
April 05, 2012
Filing Date:
November 02, 2011
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H04W16/26; H04B7/15; H04W84/20
Domestic Patent References:
JP2005318158A2005-11-10
JP2001358797A2001-12-26
JP2000286813A2000-10-13
JP2004032552A2004-01-29
JP2000151495A2000-05-30
JPH06141365A1994-05-20
Foreign References:
WO2003075515A12003-09-12
Attorney, Agent or Firm:
Hiroaki Sakai



 
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