Terminal, radio communication method, and base station
AssigneeNtt Docomo, Inc.
InventorsYuki Matsumura, Satoshi Nagata, Jing Wang
Life of this patent
Estimating the term…
Abstract
A terminal according to an aspect of the present disclosure includes a receiving section that receives an indication of one or more antenna ports in one or more code division multiplexing (CDM) groups for a demodulation reference signal (DMRS) to which a frequency domain orthogonal cover code (FD-OCC) longer than 2 is applied, and a control section that determines, based on the indication, whether to assume that a remaining antenna port of the one or more antenna ports in the one or more CDM groups is allocated to transmission of an uplink shared channel from another terminal. According to an aspect of the present disclosure, it is possible to use an appropriate number of DMRS ports.
Claims6
-6. (canceled)
A terminal comprising:
- a receiver that receives an indication of one or more antenna ports in one or more code division multiplexing (CDM) groups for a demodulation reference signal (DMRS) to which a frequency domain orthogonal cover code (FD-OCC) longer than 2 is applied;
- and
- a processor that, when the indication indicates more than four antenna ports, determines that a remaining antenna port is not associated with transmission of a physical downlink shared channel (PDSCH) to an other terminal.
A radio communication method for a terminal, comprising:
- receiving an indication of one or more antenna ports in one or more code division multiplexing (CDM) groups for a demodulation reference signal (DMRS) to which a frequency domain orthogonal cover code (FD-OCC) longer than 2 is applied;
- and
- when the indication indicates more than four antenna ports, determining that a remaining antenna port is not associated with transmission of a physical downlink shared channel (PDSCH) to an other terminal.
A base station comprising:
- a transmitter that transmits an indication of one or more antenna ports in one or more code division multiplexing (CDM) groups for a demodulation reference signal (DMRS) to which a frequency domain orthogonal cover code (FD-OCC) longer than 2 is applied;
- and
- a processor that, when the indication indicates more than four antenna ports, determines that a remaining antenna port is not associated with transmission of a physical downlink shared channel (PDSCH) to an other terminal than the terminal.
A system comprising a terminal and a base station, wherein
- the terminal comprises:
- a receiver that receives an indication of one or more antenna ports in one or more code division multiplexing (CDM) groups for a demodulation reference signal (DMRS) to which a frequency domain orthogonal cover code (FD-OCC) longer than 2 is applied;
- and
- a processor that, when the indication indicates more than four antenna ports, determines that a remaining antenna port is not associated with transmission of a physical downlink shared channel (PDSCH) to an other terminal, and
- the base station comprises:
- a transmitter that transmits the indication.
Dependencies are inferred from the claim text.