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Title:
信号を端末に伝える合成電磁場を生成する方法および送信器
Document Type and Number:
Japanese Patent JP4762460
Kind Code:
B2
Abstract:
Method and apparatus for directing energy in a plurality of azimuth directions. The amount of energy directed in the azimuth direction of a mobile terminal (130,140,150) is a function of the location and acceptable receive strength of at least two mobile terminals (130,140,150). The function is such that the strength of an EM field at the location of any of these two mobile terminals (130,140,150) is at least as large as, but not significantly larger than, needed for that mobile terminal (130,140,150) to acceptably receive the signal carried by the EM field. The amount of energy to be directed in the azimuth direction of a mobile terminal (130,140,150) is arrived at by first determining for each one of the mobile terminals (130,140,150) an EM field that would have to be generated for the mobile terminal (130,140,150) in order to provide an acceptable receive strength thereat, the determining taking into account the strength, at the location of the mobile terminal (130,140,150), of EM fields previously determined for others of the mobile terminals (130,140,150). This determining is repeated until the EM fields determined for at least two of the mobile terminals (130,140,150) provide an EM field strength for each of these two mobile terminals (130,140,150) that is substantially equal to its adequate receive strength. This determining is repeated until the EM fields converge. The amount of energy is then determined based on the EM fields thus determined.

Inventors:
Richard Thomas Aiken
Joe Han
Application Number:
JP2001287725A
Publication Date:
August 31, 2011
Filing Date:
September 20, 2001
Export Citation:
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Assignee:
Alcatel-Lucent USA Inc.
International Classes:
H04B7/10; H04B7/26; H04B7/04; H04W16/28; H04W16/30
Domestic Patent References:
JP2000092545A
JP8508865A
Attorney, Agent or Firm:
Okabe
Masao Okabe
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
Hirofumi Mimata



 
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