User equipment and measurement method

A user equipment configured to measure a radio quality of a serving cell and a neighboring cell, the user equipment comprising:

• a circuitry that
• measures, with regard to a predetermined sub-frame for measurement, designated by a base station of the serving cell, in a case where a control of inter-cell interference coordination is applied to the predetermined sub-frame for measurement, RSSI in all OFDM time symbols within only the predetermined sub-frame for measurement, and
• measures, with regard to all sub-frames in a case where a control of inter-cell interference coordination is not applied to any of the all sub-frames, the RSSI only in OFDM time symbols containing a reference signal within the respective sub-frames,
• wherein the circuitry measures, for each sub-frame for measurement, the radio quality, by removing, from the respective measured RSSI, a received power of a predetermined signal transmitted from the neighboring cell, the predetermined signal transmitted at a timing that is the same as the timing of the OFDM time symbols for which the respective measured RSSI is determined, and
• the circuitry measures, for each sub-frame for measurement, the respective measured RSSI as the radio quality, when the predetermined signal is not transmitted at a timing that is the same as the timing of the OFDM time symbols for which the respective measured RSSI is determined, and
• transmits the radio quality to the base station of the serving cell.

A user equipment configured to measure an Received Signal Strength Indicator (RSSI) of a serving cell and a neighboring cell, the equipment comprising:

• a circuitry that
• measures, with regard to a predetermined sub-frame for measurement, designated by a base station of the serving cell, in a case where a control of inter-cell interference coordination is applied to the predetermined sub-frame for measurement, RSSI in all OFDM time symbols within only the predetermined sub-frame for measurement, and
• measures, with regard to all sub-frames in a case where a control of inter-cell interference coordination is not applied to any of the all sub-frames, the RSSI only in OFDM time symbols containing a reference signal within the respective sub-frames,
• wherein the circuitry measures, for each sub-frame for measurement, the radio quality, by removing, from the respective measured RSSI, a received power of a reference signal, a PSS/SSS, a PBCH signal, a PDCCH signal, and a PDSCH signal which are transmitted from the neighboring cell, the reference signal, the PSS/SSS, the PBCH signal, the PDCCH signal, and the PDSCH signal transmitted at a timing that is the same as the timing of the OFDM time symbols for which the respective measure RSSI is determined, and
• transmits the radio quality to the base station of the serving cell.

A user equipment configured to measure an Received Signal Strength Indicator (RSSI) of a serving cell and a neighboring cell, the equipment comprising:

• a circuitry that
• measures, with regard to a predetermined sub-frame for measurement, designated by a base station of the serving cell, in a case where a control of inter-cell interference coordination is applied to the predetermined sub-frame for measurement, RSSI in all OFDM time symbols within only the predetermined sub-frame for measurement, and
• measures, with regard to all sub-frames in a case where a control of inter-cell interference coordination is not applied to any of the all sub-frames, the RSSI only in OFDM time symbols containing a reference signal within the respective sub-frames,
• wherein the circuitry measures, for each sub-frame for measurement, the radio quality, by removing, from the respective measured RSSI, a received power of a reference signal, a PSS/SSS, a PBCH signal, a PDCCH signal, and a PDSCH signal which are transmitted from the neighboring cell, the reference signal, the PSS/SSS, the PBCH signal, the PDCCH signal, and the PDSCH signal transmitted at a timing that is the same as the timing of the OFDM time symbols for which the respective measured RSSI is determined, and
• the circuitry measures, for each sub-frame for measurement, the respective measured RSSI as the radio quality, when the reference signal, the PSS/SSS, the PBCH signal, the PDCCH signal, and the PDSCH signal are not transmitted at a timing that is the same as the timing of the OFDM time symbols for which the respective measured RSSI is determined, and
• transmits the radio quality to the base station of the serving cell.