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US 11,601,870 B2Granted
Terminal, radio communication method and base station to monitor search spaces
AssigneeNtt Docomo, Inc.
InventorsKazuki Takeda, Satoshi Nagata, Qin Mu
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Abstract
The present invention is designed so that communication is performed appropriately in radio communication systems that support different numerologies than existing LTE systems. A receiving section that receives a downlink control channel, and a control section that controls the detection of search spaces that serve as candidates for allocating the downlink control channel are provided, and the control section controls the detection of a common search space and a user-specific search space, in which different subcarrier spacings and/or different transmission cycles are configured.
Claims5
A terminal comprising:
- a receiver that receives a downlink control channel;
- and
- a processor that monitors a common search space included in a first search space set and a UE-specific search space included in a second search space set which are candidates for the downlink control channel,
- wherein transmission periodicity of the common search space and transmission periodicity of the UE-specific search space are respectively configured by higher layer signaling,
- a number of transmission symbols for the common search space and a number of transmission symbols for the UE-specific search space are respectively configured by the higher layer signaling,
- a symbol starting-position of the common search space and a symbol-starting position of the terminal-specific search space are respectively configured by the higher layer signaling, and
- the processor supports the transmission periodicity configured in the common search space being shorter than the transmission periodicity configured in the UE-specific search space.
4 more elements
A radio communication method for a terminal comprising:
- receiving a downlink control channel;
- and
- monitoring a common search space included in a first search space set and a UE-specific search space included in a second search space set which are candidates for the downlink control channel,
- wherein transmission periodicity of the common search space and transmission periodicity of the UE-specific search space are respectively configured by higher layer signaling,
- a number of transmission symbols for the common search space and a number of transmission symbols for the UE-specific search space are respectively configured by the higher layer signaling,
- a symbol starting-position of the common search space and a symbol-starting position of the terminal-specific search space are respectively configured by the higher layer signaling, and
- the terminal supports the transmission periodicity configured in the common search space being shorter than the transmission periodicity configured in the UE-specific search space.
4 more elements
A base station comprising:
- a transmitter that transmits a downlink control channel;
- and
- a processor that controls transmission of the downlink control channel using a common search space included in a first search space set and a UE-specific search space included in a second search space set, which are each respectively configured with a transmission periodicity, a number of transmission symbols and a symbol starting-position,
- wherein the transmission periodicity configured in the common search space being shorter than the transmission periodicity configured in the UE-specific search space is supported by a terminal.
1 more element
A system comprising a terminal and a base station, wherein:
- the terminal comprises:
- a receiver that receives a downlink control channel;
- and
- a processor of the terminal that monitors a common search space included in a first search space set and a UE-specific search space included in a second search space set which are candidates for the downlink control channel,
- the base station comprises:
- a transmitter that transmits the downlink control channel;
- and
- a processor of the base station that controls transmission of the downlink control channel using the common search space and the UE-specific search space,
- wherein transmission periodicity of the common search space and transmission periodicity of the UE-specific search space are respectively configured by higher layer signaling,
- a number of transmission symbols for the common search space and a number of transmission symbols for the UE-specific search space are respectively configured by the higher layer signaling,
- a symbol starting-position of the common search space and a symbol-starting position of the terminal-specific search space are respectively configured by the higher layer signaling, and
- the processor of the terminal supports the transmission periodicity configured in the common search space being shorter than the transmission periodicity configured in the UE-specific search space.
9 more elements
Dependencies are inferred from the claim text.