Transmission power correcting method, mobile communications system and mobile station
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorMichiaki Takano
Life of this patent
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Abstract
A mobile station in a mobile communications system directs a base station to raise a transmission power using identification data, when a reception quality measured by the mobile station is lower than a desired reception quality. The mobile station also directs the base station to lower the transmission power using identification data, when the reception quality measured by the mobile station is higher than the desired reception quality.
Claims7
A transmission power correcting method for correcting a transmission power by directing a source of transmission to correct a transmission power, based on a reception quality measured at a destination of transmission, comprising the steps of:
- directing the source of transmission to raise the transmission power when the reception quality measured at the destination of transmission is lower than a desired reception quality;
- and
- directing the source of transmission to lower the transmission power when the reception quality measured at the destination of transmission is higher than the desired reception quality.
A mobile communications system provided with a permanently installed base station and mobile stations for radio communication with the base station as they travel for correcting a power of transmission from the base station by directing the base station to correct the transmission power, based on the reception quality measured by the mobile station, wherein
- the mobile station directs the base station to raise the transmission power when the reception quality measured by the mobile station is lower than a desired reception quality and directs the base station to lower the transmission power when the reception quality measured by the mobile station is higher than the desired reception quality.
A mobile station for radio communication with a permanently installed base station, comprising:
- a reception quality measuring unit for measuring a quality of reception from the base station;
- and
- a correction requesting unit for directing the base station to correct a transmission power, based on the reception quality measured by said reception quality measuring unit, wherein
- said correction requesting unit directs the base station to raise the transmission power when the reception quality measured by said reception quality measuring unit is lower than a desired reception quality, and directs the base station to lower the transmission power when the reception quality measured by said reception quality measuring unit is higher than the desired reception quality.
A mobile communications system provided with a permanently installed base station and mobile stations for radio communication with the base station using a plurality of spreading codes as they travel, for correcting a power of transmission from the base station by directing the base station to correct the transmission power, based on the reception quality measured by the mobile station, wherein
- the mobile station directs the base station to reduce the number of spreading codes used and to raise the transmission power, when the reception quality measured by the mobile station is lower than a desired reception quality.
A mobile communications system wherein a base station, receiving an instruction from a mobile station to reduce the number of spreading codes used and an instruction to raise a transmission power, corrects the number of spreading codes and the transmission power so that the total power does not exceed a power rating.
A mobile station for radio communication with a permanently installed base station using a plurality of spreading codes, comprising:
- a reception quality measuring unit for measuring a reception quality of a signal received from the base station;
- and
- a correction requesting unit for directing the base station to correct the transmission power, based on the reception quality measured by said reception quality measuring unit, wherein
- said correction requesting unit directs the base station to reduce the number of spreading codes used and to raise the transmission power, when the reception quality measured by said reception quality measuring unit is lower than a desired reception quality.
Dependencies are inferred from the claim text.