Communication apparatus and method that can promptly and efficiently perform decoding/processing of a pdcch that is related to a search space
AssigneeSharp Kabushiki Kaisha
InventorsShohei YAMADA, Shoichi SUZUKI
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Abstract
A communication system, a mobile station apparatus, a base station apparatus, and a processing method are provided that can perform decoding processing of a PDCCH related to a search space efficiently, and can perform communication promptly. A mobile station apparatus for performing communication with a base station apparatus in a mobile communication system: performs monitoring of a physical downlink control channel in an extension search space in accordance with an instruction from the base station apparatus.
Claims4
A mobile station apparatus that is configured to communicate with a base station apparatus, the mobile station apparatus comprising:
- a reception circuitry configured to and/or programmed
- to perform detecting of Downlink Control Information with CRC (cyclic redundancy check) bits scrambled by C-RNTI (cell-radio network temporary identity) in a first search space which is commonly determined for mobile station apparatuses in a first cell and a second search space which is a mobile station apparatus specific search space determined based on at least the C-RNTI, and
- to perform detecting of Downlink Control Information with the CRC bits scrambled by RNTI in a third search space which is different from the first search space and the second search space and commonly determined for mobile station apparatuses in a second cell.
A base station apparatus that is configured to communicate with a mobile station apparatus, the base station apparatus comprising:
- a scheduling circuitry configured to and/or programmed
- to instruct the mobile station apparatus to perform detecting of Downlink Control Information with CRC (cyclic redundancy check) bits scrambled by C-RNTI (cell-radio network temporary identity) in a first search space which is commonly determined for mobile station apparatuses in a first cell and a second search space which is a mobile station apparatus specific search space determined based on at least the C-RNTI, and
- to instruct the mobile station apparatus to perform detecting of Downlink Control Information with the CRC bits scrambled by RNTI in a third search space which is different from the first search space and the second search space and commonly determined for mobile station apparatuses in a second cell.
A radio communication method used in a mobile station apparatus that is configured to communicate with a base station apparatus, the radio communication method comprising:
- performing detecting of Downlink Control Information with CRC (cyclic redundancy check) bits scrambled by C-RNTI (cell-radio network temporary identity) in a first search space which is commonly determined for mobile station apparatuses in a first cell and a second search space which is a mobile station apparatus specific search space determined based on at least the C-RNTI;
- and
- performing detecting of Downlink Control Information with the CRC bits scrambled by RNTI in a third search space which is different from the first search space and the second search space and commonly determined for mobile station apparatuses in a second cell.
A radio communication method used in a base station apparatus that is configured to communicate with a mobile station apparatus, the radio communication method comprising:
- instructing the mobile station apparatus to perform detecting of Downlink Control Information with CRC (cyclic redundancy check) bits scrambled by C-RNTI (cell-radio network temporary identity) in a first search space which is commonly determined for mobile station apparatuses in a first cell and a second search space which is a mobile station apparatus specific search space determined based on at least the C-RNTI, and
- instructing the mobile station apparatus to perform detecting of Downlink Control Information with the CRC bits scrambled by RNTI in a third search space which is different from the first search space and the second search space and commonly determined for mobile station apparatuses in a second cell.
Dependencies are inferred from the claim text.