Wireless communication system and method of controlling a transmission power
First Claim
1. A method of controlling a transmission power of a mobile station, the method comprising:
- a base station notifying the mobile station of transmission power information for controlling a transmission power of a random access channel preamble;
the mobile station notifying the base station of transmission delay information comprising one of a number of preamble transmissions and a number of preamble retransmissions; and
the base station changing the transmission power information according to the transmission delay information, andthe base station notifying the mobile station of the changed transmission power information.
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Accused Products
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.
146 Citations
35 Claims
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1. A method of controlling a transmission power of a mobile station, the method comprising:
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a base station notifying the mobile station of transmission power information for controlling a transmission power of a random access channel preamble; the mobile station notifying the base station of transmission delay information comprising one of a number of preamble transmissions and a number of preamble retransmissions; and the base station changing the transmission power information according to the transmission delay information, and the base station notifying the mobile station of the changed transmission power information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless communication system for causing a base station to control a transmission power of a mobile station, the system comprising:
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a base station which notifies the mobile station of transmission power information for controlling transmission power of a random access channel preamble, changes the transmission power information according to transmission delay information received from the mobile station, and notifies the mobile station of the changed transmission power information; and a mobile station which notifies the base station of the transmission delay information comprising one of a number of preamble transmissions and a number of preamble retransmissions. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A base station comprising:
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a transmission processing unit which notifies a mobile station of transmission power information for controlling a transmission power of a random access channel preamble; a number-of-transmission calculation unit which receives transmission delay information comprising one of a number of preamble transmissions and a number of preamble retransmissions transmitted by a mobile station; and power offset control unit which changes the transmission power information according to the transmission delay information, wherein the transmission processing unit notifies the mobile station of the changed transmission power information. - View Dependent Claims (16)
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17. A mobile station comprising:
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a reception processing unit which receives, from a base station, transmission power information for controlling a transmission power of a random access channel preamble; a number-of-transmission calculation unit which calculates one of a number of preamble transmissions and a number of preamble retransmissions; a transmission processing unit which notifies the base station of transmission delay information comprising the one of the number of preamble transmissions and the number of preamble retransmissions; and wherein the reception processing unit receives, from the base station, changed transmission power information according to the transmission delay information. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method of a base station controlling a transmission power of a mobile station, the method comprising:
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notifying the mobile station of transmission power information for controlling a transmission power of a random access channel preamble; receiving, from the mobile station, transmission delay information comprising one of a number of preamble transmissions by the mobile station and a number of preamble retransmissions by the mobile station; and changing the transmission power information according to the transmission delay information, and notifying the mobile station of the changed transmission power information. - View Dependent Claims (25)
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26. A method of controlling a transmission power of a mobile station, comprising:
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the mobile station receiving, from a base station, transmission power information; the mobile station notifying the base station of transmission delay information comprising one of a number of preamble transmissions and a number of preamble retransmissions; and the base station changing the transmission power information according to the transmission delay information and notifying the mobile station of the changed transmission power information. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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33. A computer-readable medium having stored therein a program for controlling a base station, causing a computer to execute functions of:
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notifying a mobile station of transmission power information for controlling a transmission power of a random access channel preamble; receiving, from the mobile station, transmission delay information comprising one of a number of preamble transmissions and a number of preamble retransmissions; and changing the transmission power information according to the transmission delay information and notifying the mobile station of the changed transmission power information.
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34. A computer-readable medium having stored therein a program for controlling a mobile station, causing a computer to execute functions of:
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receiving, from a base station, transmission power information for controlling a transmission power of a random access channel preamble; notifying the base station of transmission delay information comprising one of a number of preamble transmissions and a number of preamble retransmissions; receiving, from the base station, changed transmission power information according to the transmission delay information. - View Dependent Claims (35)
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Specification