Call control method in mobile communication and system therefor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6539233
SERIAL NO

09478809

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A mobile terminal (30) receives pilot channels from both of radio base stations (20 and 21) when it is located in a boundary region between radio zones (20a and 21a). Upon call origination, the mobile terminal (30) calculates a propagation loss (Ptx0-Prx0) given by a difference between transmission power level information (Ptx0) stored in the pilot channel of the radio base station (20) and a reception field strength (Prx0) actually received. Likewise, the mobile terminal (30) calculates a propagation loss (Ptx1-Prx1) as a difference between transmission power level information (Ptx1) stored in the pilot channel from the radio base station (21) and a reception field strength (Prx1) actually received. Then, the mobile terminal (30) compares the propagation losses calculated for the radio base stations (20 and 21). A call is originated to one of the radio base stations (20 and 21) which has a smaller value in the above-mentioned comparison.

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First Claim

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Patent Owner(s)

  • NEC CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Taketsugu, Masanori Tokyo, JP 20 623

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