Wireless communication system and method of controlling a transmission power
First Claim
1. A mobile station comprising:
- a receiver configured to receive first information which is broadcasted by a base station; and
a transmitter configured to;
transmit a RACH preamble with preamble transmission power to the base station, the preamble transmission power being calculated by the mobile station using the first information, andtransmit second information to the base station, the second information being related with a number of RACH preambles sent until a successful RACH completion,wherein the receiver is further configured to receive third information which is broadcasted by the base station,wherein the third information is optimized by the base station according to the second information.
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Abstract
A base station is provided which notifies a mobile station of transmission power information for an uplink RACH, the mobile station transmits transmission delay estimation information on the RACH to the base station over the RACH at a transmission power based on the transmission power information, and the base station changes the transmission power information according to the transmission delay estimation information and notifies the mobile station of the changed transmission power information. The mobile station retransmits data or a preamble if the mobile station does not receive a notification that the base station has received the data or the preamble correctly after a predetermined time. The base station transmits the transmission power information over a BCH and a CPICH transmitted to a plurality of mobile stations.
168 Citations
32 Claims
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1. A mobile station comprising:
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a receiver configured to receive first information which is broadcasted by a base station; and a transmitter configured to; transmit a RACH preamble with preamble transmission power to the base station, the preamble transmission power being calculated by the mobile station using the first information, and transmit second information to the base station, the second information being related with a number of RACH preambles sent until a successful RACH completion, wherein the receiver is further configured to receive third information which is broadcasted by the base station, wherein the third information is optimized by the base station according to the second information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a transmission power of a mobile station, the method comprising:
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receiving first information which is broadcasted by a base station; transmitting a RACH preamble with preamble transmission power to the base station, the preamble transmission power being calculated by the mobile station using the first information; transmitting second information to the base station, the second information being related with a number of RACH preambles sent until a successful RACH completion; and receiving third information which is broadcasted by the base station, wherein the third information is optimized by the base station according to the second information. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A base station comprising:
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a transmitter configured to broadcast first information to a mobile station; and
a receiver configured to;receive second information from the mobile station, the second information being related with a number of RACH preambles sent until a successful RACH completion, and wherein the transmitter is further configured to broadcast third information, wherein the third information is optimized by the base station according to the second information. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method of a base station controlling a transmission power of a mobile station, the method comprising:
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broadcasting first information to a mobile station; and receiving second information from the mobile station, the second information being related with a number of RACH preambles sent until a successful RACH completion; and broadcasting third information, wherein the third information is optimized by the base station according to the second information. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification