Radio communication apparatus and method

Details Radio communication apparatus and method Radio communication apparatus and method

2007-07-17

2010-11-02

Ly, Nghi H (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S436000, C370S331000

Reexamination Certificate

active

07826852

ABSTRACT:
A radio communication apparatus which communicates with a radio terminal device, the apparatus belonging to a first group, the device performing handoff between apparatuses which belong to the first group, the apparatus includes unit selecting one block from frequency blocks obtained by dividing a specified frequency band, the frequency blocks being continuous on a frequency axis, unit detecting an unused channel among channels contained in the selected block, unit detecting an in-use channel among the channels when the unused channel is detected, unit determining whether a second group to which a device which is using the detected in-use channel belongs is the same as the first group, and unit assigning the detected unused channel as a channel for communication with the radio terminal device when the in-use channel fails to be detected or the determination unit determines that the second group is the same as the first group.

REFERENCES:
patent: 2002-271844 (2002-09-01), None
Suichi Sasaoka, “Mobile Communication” , Ohmsha, May 25, 1998, Japan, pp. 153 (Section 6.6.2).
Suichi Sasaoka, “Mobile Communication”, Ohmsha, May 25, 1998, Japan, pp. 153 (Section 6.6.2) (w/Information Sheet).

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