User equipment, base station device, and communication method for DCI-based resource allocation

A base station apparatus for communicating with a terminal apparatus in a serving cell, the base station apparatus comprising:

• a processor configured to configure, in the serving cell, a first set of continuous downlink resource blocks in frequency domain, a second set, which is different from the first set, of continuous downlink resource blocks in frequency domain, a third set of continuous uplink resource blocks in frequency domain, and a fourth set, which is different from the third set, of continuous uplink resource blocks in frequency domain;
• a transmitter configured to transmit a first Physical Downlink Control Channel (PDCCH) with a first Downlink Control Information (DCI) format and a second PDCCH with a second DCI format in the first set when the first set is activated, and to transmit a Physical Downlink Shared Channel (PDSCH) scheduled according to the first DCI format in the first set;
• and
• a receiver configured to receive, in the third set, a Physical Uplink Shared Channel (PUSCH) scheduled according to the second DCI format when the third set is activated, wherein:
• in a case that a number of different sizes of DCI formats monitored using a Common-Radio Network Temporary Identifier (C-RNTI) in the serving cell exceeds three, a size of a first frequency domain resource allocation field included in the first DCI format is provided based on a number of the continuous downlink resource blocks in the second set and a size of a second frequency domain resource allocation field included in the second DCI format is provided based on the fourth set,
• the first frequency domain resource allocation field is used for scheduling the continuous downlink resource blocks in the first set, and
• the second frequency resource allocation field is used for scheduling the continuous uplink resource blocks in the fourth set.

A communication method used for a terminal apparatus for communicating with a base station apparatus in a serving cell, the communication method comprising:

• configuring, in the serving cell, a first set of continuous downlink resource blocks in frequency domain, a second set, which is different from the first set, of continuous downlink resource blocks in frequency domain, a third set of continuous uplink resource blocks in frequency domain, and a fourth set, which is different from the third set, of continuous uplink resource blocks in frequency domain;
• monitoring a first Physical Downlink Control Channel (PDCCH) with a first Downlink Control Information (DCI) format and a second PDCCH with a second DCI format in the first set when the first set is activated;
• receiving a Physical Downlink Shared Channel (PDSCH) scheduled according to the first DCI format in the first set;
• and
• transmitting, in the third set, a Physical Uplink Shared Channel (PUSCH) scheduled according to the second DCI format when the third set is activated, wherein:
• in a case that a number of different sizes of DCI formats monitored using a Common-Radio Network Temporary Identifier (C-RNTI) in the serving cell exceeds three, a size of a first frequency domain resource allocation field included in the first DCI format is provided based on a number of the continuous downlink resource blocks in the second set and a size of a second frequency domain resource allocation field included in the second DCI format is provided based on the fourth set,
• the first frequency domain resource allocation field is used for scheduling the continuous downlink resource blocks in the first set, and
• the second frequency resource allocation field is used for scheduling the continuous uplink resource blocks in the fourth set.

A communication method used for a base station apparatus for communicating with a terminal apparatus in a serving cell, the communication method comprising:

• configuring, in the serving cell, a first set of downlink resource blocks continuous in frequency domain, a second set, which is different from the first set, of continuous downlink resource blocks in frequency domain, a third set of continuous uplink resource blocks in frequency domain, and a fourth set, which is different from the third set, of continuous uplink resource blocks in frequency domain;
• transmitting a first Physical Downlink Control Channel (PDCCH) with a first Downlink Control Information (DCI) format and a second PDCCH with a second DCI format in the first set when the first set being activated;
• transmitting a Physical Downlink Shared Channel (PDSCH) scheduled according to the first DCI format in the first set;
• and
• receiving, in the third set, a Physical Uplink Shared Channel (PUSCH) scheduled according to the second DCI format when the third set is activated, wherein;
• in a case that a number of different sizes of DCI formats monitored using a Common-Radio Network Temporary Identifier (C-RNTI) in the serving cell exceeds three, a size of a first frequency domain resource allocation field included in the first DCI format is provided based on a number of the continuous downlink resource blocks in the second set and a size of a second frequency domain resource allocation field included in the second DCI format is provided based on the fourth set,
• the first frequency domain resource allocation field is used for scheduling the continuous downlink resource blocks in the first set, and
• the second frequency resource allocation field is used for scheduling the continuous uplink resource blocks in the fourth set.