Radio base station and control method for the same

摘要

A radio base station eNB which periodically receives uplink control information including CQI through PUCCH, comprising: a storage unit 130 which stores a plurality of combinations of cqi-pmi-ConfigIndex (ICQI/PMI) for determining transmission timing of the uplink control information and cqi-PUCCH-ResourceIndex (n(2)PUCCH) for determining an orthogonal sequence used for transmitting the uplink control information; and a parameter assignment unit 121 which assigns one of the combinations of cqi-pmi-ConfigIndex (ICQI/PMI) and cqi-PUCCH-ResourceIndex (n(2)PUCCH) which are stored by the storage unit, to a radio terminal UE connected to the radio base station. The storage unit 130 stores the combinations while combining cqi-pmi-ConfigIndex (ICQI/PMI) which possibly cause overlap of the transmission timing of the uplink control information respectively with different cqi-PUCCH-ResourceIndex (n(2)PUCCH).

主权项

1. A radio base station configured to periodically receive uplink control information including information indicating a radio quality of a downlink through an uplink control channel multiplexed by an orthogonal sequence, comprising:
a storage unit configured to store a plurality of parameters for determining transmission timings of the uplink control information, wherein each of the timing setting parameters corresponds to a combination of an interval for transmitting the uplink control information and an offset to prevent transmission timing overlap; a parameter assignment unit configured to assign one of the timing setting parameters and a control channel setting parameter for determining the orthogonal sequence used for transmitting the uplink control information, to a radio terminal connected to the radio base station; and a mapping table with which the timing setting parameters corresponds to control channel setting parameters for determining the orthogonal sequence used for transmitting the uplink control information, wherein the parameter assignment unit assigns a current timing setting parameter and a control channel setting parameter corresponding to the current timing setting parameter, to a newly connected radio terminal.