Mobile radio terminal
AssigneeKabushiki Kaisha Toshiba
InventorsYoshiyuki Kubo, Naritoshi Saito
Life of this patent
Estimating the term…
Abstract
If a control unit detects that it is located outside the service area, searching for a base station on the basis of information stored in a first list storage area is conducted with a certain cycle by a first searching means and searching for a base station on the basis of information stored in a second list storage area is conducted in a gradually extended cycle, in accordance with the number of times Cs of searching for the base station, by a second searching means.
Claims14
A mobile radio terminal comprising:
- receiving means for receiving a radio signal transmitted from a radio base station;
- detecting means for detecting a condition of failing to carry out communications with the radio base station based on the reception result of the receiving means;
- searching means for searching for a radio base station capable of carrying out communications with the radio terminal, by controlling the receiving means if the detecting means detects the condition of failing to carry out communications;
- and
- search cycle varying means for varying a search frequency of the searching means, in accordance with the number of times of searching for the radio base station by the searching means.
A mobile radio terminal comprising:
- receiving means for receiving a radio signal transmitted from a radio base station;
- detecting means for detecting a condition of failing to carry out communications with the radio base station based on the reception result of the receiving means;
- searching means for searching for a radio base station capable of carrying out communications with the radio terminal, by controlling the receiving means if the detecting means detects the condition of failing to carry out communications;
- and
- search cycle varying means for varying a search frequency of the searching means, in accordance with an elapsing time after the detecting means detects the condition of failing to carry out communications.
A mobile radio terminal comprising:
- receiving means for receiving a radio signal transmitted from a radio base station;
- detecting means for detecting a condition of failing to carry out communications with the radio base station based on the reception result of the receiving means;
- searching means for searching for a radio base station capable of carrying out communications with the radio terminal, by controlling the receiving means every time a search cycle elapses if the detecting means detects the condition of failing to carry out communications;
- and
- search cycle varying means for varying the search cycle, in accordance with the number of times searching for the radio base station by the searching means.
A mobile radio terminal comprising:
- receiving means for receiving a radio signal transmitted from a radio base station;
- detecting means for detecting a condition of failing to carry out communications with the radio base station based on the reception result of the receiving means;
- searching means for searching for a radio base station capable of carrying out communications with the radio terminal, by controlling the receiving means every time a search cycle elapses, if the detecting means detects the condition of failing to carry out communications;
- and
- search cycle varying means for varying the search cycle, in accordance with an elapsing time after the detecting means detects the condition of failing to carry out communications.
Dependencies are inferred from the claim text.