Title:
NARROW-BAND RADIO CONTINUOUS COMMUNICATION METHOD AND SYSTEM
Document Type and Number:
Japanese Patent JP3514228
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a communication method for enabling reception of continuous communication through road side antennas disposed alternately for time- shared operation.
SOLUTION: Road side antennas 101 and 102 are disposed alternately, such that the communication ranges overlap appropriately for time shared operation. A mobile unit 122 searches a receiving frame 133 from an adjacent next antenna 102, extending from a communication frame 131 via the antenna 101 used at the overlapping point. When communication can be received continuously, both communications can be transmitted/received by switching the antennas instantaneously.
Inventors:
Kasagi, Masaru
Application Number:
JP2000325407A
Publication Date:
March 31, 2004
Filing Date:
October 25, 2000
Export Citation:
Assignee:
NEC CORP
International Classes:
G07B15/00; G08G1/09; G08G1/0967; H04B7/26; H04W4/04; H04W28/06; H04W36/08; H04W36/18; H04W36/30; H04W36/36; H04W72/04; (IPC1-7): H04B7/26; G07B15/00
Attorney, Agent or Firm:
宮崎 昭夫 （外３名）
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