Signal transmission method, mobile station device, and base station device for CDMA mobile communication system

A signal transmission method of a CDMA mobile communications system carrying out communications between a plurality of mobile stations which carry out power transmission control of both an open loop control method and a closed loop control method and a base station by code division multiple access, said signal transmission method comprising the steps of:

• transmitting a signal at a first transmission power from at least one of said plurality of mobile stations to the base station during a predetermined period of time;
• transmitting said signal at a second transmission power which is higher than said first transmission power from said mobile station to said base station after said predetermined period of time;
• and
• at said at least one of said plurality of mobile stations, carrying out open loop control within said predetermined period of time, and carrying out closed loop control after carrying out the open loop control.

A signal transmission method of a CDMA mobile communications system carrying out communication between a plurality of mobile stations which carry out power transmission control of both an open loop control method and a closed loop control method and a base station by code division multiple access, said signal transmission method comprising the steps of:

• transmitting a first frame of a signal at a first transmission power from at least one of said plurality of mobile stations to the base station;
• transmitting at least a second frame of said signal at a second transmission power which is higher than said first transmission power from said at least one of said plurality of mobile stations to said base station;
• and
• at said at least one of said plurality of mobile stations, carrying out open loop control within the period of transmitting said first frame of said signal, and carrying out closed loop control after carrying out the open loop control.

A mobile station of a CDMA mobile communications system communication with a base station by code division multiple access and carrying out power transmission control of both an open loop control method and a closed loop control method, said mobile station comprising:

• means for transmitting a first signal at a first transmission power to said base station;
• means for transmitting a second signal at a second transmission power which is higher than said first transmission power to said base station after transmitting said first signal;
• and
• means for carrying out open loop control within the period of transmitting said first signal, and carrying out closed loop control after carrying out the open loop control.

A mobile station of a CDMA mobile communications system communicating with a base station by code division multiple access and carrying out power transmission control of both an open loop control method and a closed loop control method, said mobile station comprising:

• means for transmitting a signal at a first transmission power to a base station during a predetermined period of time;
• means for transmitting said signal at a second transmission power which is higher than said first transmission power to said base station after said predetermined period of time;
• and
• means for carrying out open loop control within said predetermined period of time, and carrying out closed loop control after carrying out the open loop control.

A mobile station of a CDMA mobile communications system communication with a base station by code division multiple access and carrying out power transmission control of both an open loop control method and a closed loop control method, said mobile station comprising:

• means for transmitting a first frame of a signal at a first transmission power to a base station;
• means for transmitting a second frame of said signal at a second transmission power which is higher than said first transmission power to said base station;
• and
• means for carrying out open loop control within the period of transmitting said first frame of said signal, and carrying out closed loop control after carrying out the open loop control.

A base station of a CDMA mobile communications system communicating by code division multiple access with a plurality of mobile stations which carry out power transmission control of both an open loop control method and a closed loop control method, said base station comprising:

• first signal receiving means for receiving a first signal at a first spreading factor from a mobile station;
• and
• second signal receiving means for receiving a second signal at a second spreading factor which is lower than said first spreading factor from said mobile station;
• wherein said mobile station carries out open loop control within the period of transmitting said first signal, and carries out closed loop control after carrying out the open loop control.

A base station of a CDMA mobile communications system communicating by code division multiple access with mobile stations which carry out power transmission control of both an open loop control method and a closed loop control method, said base station comprising:

• first receiving means for receiving a first frame of a signal at a first spreading factor from a mobile station;
• and
• second receiving means for receiving a second frame of said signal at a second spreading factor which is lower than said first spreading factor from said mobile station;
• wherein said mobile station carries out open loop control within the period of transmitting said first frame of said signal, and carries out closed loop control after carrying out the open loop control.