COMMUNICATION TERMINAL APPARATUS BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD
First Claim
1. A communication terminal apparatus used in a communication system in which communication resources are allocated to each communication terminal apparatus based on downlink channel quality, said communication terminal apparatus comprising:
- a measuring device that measures downlink channel quality; and
a transmitter that transmits a notification signal to notify a base station apparatus of information that indicates channel quality;
wherein said transmitter transmits a notification signal having information made less susceptible to errors in a propagation path, the information, among information indicative of channel quality, having a possibility of decreasing the downlink throughput when the information is received erroneously in said base station apparatus.
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Accused Products
Abstract
A communication mode determination section 201 determines the communication mode based on the CIR measured by a CIR measurement section 219; a DRC signal creation section 202 creates a DRC signal with a number corresponding to the communication mode; and a DRC power controller 205 refers to a transmission power table 206 showing the correspondence between DRC numbers and transmission power, and, based on the transmission power of the pilot signal output from a pilot power controller 209, increases transmission power in proportion as the DRC signal indicates that downlink channel quality is good.
18 Citations
20 Claims
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1. A communication terminal apparatus used in a communication system in which communication resources are allocated to each communication terminal apparatus based on downlink channel quality, said communication terminal apparatus comprising:
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a measuring device that measures downlink channel quality; and
a transmitter that transmits a notification signal to notify a base station apparatus of information that indicates channel quality;
wherein said transmitter transmits a notification signal having information made less susceptible to errors in a propagation path, the information, among information indicative of channel quality, having a possibility of decreasing the downlink throughput when the information is received erroneously in said base station apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20)
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18. A radio communication method, wherein:
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a communication terminal apparatus, when transmitting a notification signal to notify a base station apparatus of information that indicates downlink channel quality, transmits a notification signal having information made less susceptible to errors in a propagation path, the information, among information indicative of channel quality, having a possibility of decreasing the downlink throughput when the information is received erroneously in said base station apparatus; and
said base station determines downlink communication resource allocation in accordance with a notification signal.
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Specification