Cellular type mobile communication system that provides communication restriction command codes along with base station ID codes for base stations where mobile communications is restricted
AssigneeNEC Corporation
InventorNarihira Takemura
Life of this patent
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Abstract
A communication restriction command code for a mobile station is added to a base station identification code transmitted from the base station. When the mobile station is positioned within an area desired to suppress electromagnetic wave signals, the base station identification code including the communication restriction command code is received to interrupt transmission or reduce transmission power to be smaller than normal transmission power to perform communication control for restricting transmission of the mobile station.
Claims7
A Cellular mobile communication system in which by adding a communication restriction command code for restricting transmission of a mobile station to a base station identification code transmitted from a first base station covering an area where suppression of an electromagnetic wave signal is desired, transmission of said mobile station is restricted by receiving said communication restriction command code added to said base station identification code when said mobile station is located within the area desired to suppress the electromagnetic wave signal,
- wherein transmission of said mobile station is restricted in the area covered by the first base station based solely on non-cellular equipment being located in the area covered by the first base station in which it is desired to suppress the electromagnetic wave signal of said mobile station, and
- wherein, when said mobile station is located in a region that includes the area covered by the first base station and a second area that is covered by a second base station in which transmission restriction is not to be performed, said mobile station receives a first ID code from the first base station and the communication restriction command code from the first base station, as well as a second ID code from the second base station, and wherein said mobile station is still restricted from transmitting when the mobile station receives the communication restriction command code from the first base station but not from the second base station.
A method for restricting transmissions in a Cellular mobile communication system, comprising:
- a) receiving, by a mobile station, identifiers from all base stations within a reception range of the mobile station, each base station having a corresponding coverage cell;
- b) determining, by the mobile station, if any of the received identifiers also include a transmission restriction command;
- and
- c) if the determination made in step b) is that at least one transmission restriction command has been received by the mobile station, performing restriction of mobile communications by the mobile station,
- wherein the restriction is performed in step c) irrespective as to whether or not a corresponding identifier from another base station in which transmission restriction is not required has been received in step a).
Dependencies are inferred from the claim text.