Radio device, channel allocation method, and channel,...

Details Radio device, channel allocation method, and channel,... Radio device, channel allocation method, and channel,...

2003-09-01

2009-11-03

Maung, Nay A (Department: 2618)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S464000, C455S509000, C455S154100, C370S431000, C370S437000, C370S458000

Reexamination Certificate

active

07613460

ABSTRACT:
When there is a connection request to a base station supporting adaptive modulation from a terminal supporting adaptive modulation, the base station measures a D wave level that indicates communication environment of the transmission path. When the measured D wave level is not lower than a threshold value of D wave level at which communication is possible by a modulation method (16QAM) having larger multi-value number, the base station permits allocation of a wireless channel to the terminal. Therefore, even when the modulation method is switched from one having smaller multi-value number (π/4 shift QPSK) to one having larger multi-value number (16QAM) during communication after channel allocation to the terminal, degradation of communication quality due to the communication environment of the transmission path can be prevented.

REFERENCES:
patent: 5367533 (1994-11-01), Schilling
patent: 5396648 (1995-03-01), Patsiokas et al.
patent: 5448761 (1995-09-01), Ushirokawa
patent: 5507008 (1996-04-01), Kanai et al.
patent: 5666655 (1997-09-01), Ishikawa et al.
patent: 5708968 (1998-01-01), Suzuki
patent: 5886988 (1999-03-01), Yun et al.
patent: 6125148 (2000-09-01), Frodigh et al.
patent: 6349217 (2002-02-01), Honcharenko et al.
patent: 2002/0114379 (2002-08-01), Uesugi et al.
patent: 2003/0022629 (2003-01-01), Miyoshi et al.
patent: 1 227 603 (2002-07-01), None
patent: 05-110500 (1993-04-01), None
patent: 11-098570 (1999-04-01), None
patent: 2001-515301 (2001-09-01), None
patent: 2002-064424 (2002-02-01), None
patent: 2002-084329 (2002-03-01), None

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