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US 11,146,371 B2Granted
Method of transmission of CSI-RS and base station
AssigneeNtt Docomo, Inc.
InventorsYuichi Kakishima, Satoshi Nagata, Chongning Na
Life of this patent
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Abstract
A method of transmission of Channel State Information Reference Signals (CSI-RSs) includes transmitting, from a base station (BS) to a user equipment (UE), the CSI-RSs using 24 antenna ports (APs) or 32 APs. A first CSI-RS configuration for the APs are configured by aggregating a predetermined number of second CSI-RS configurations. A number of APs per each of the second CSI-RS configurations is 2, 4, or 8.
Claims8
A terminal comprising:
- a processor;
- and
- a receiver that receives Channel State Information Reference Signals (CSI-RSs), transmitted from a base station (BS), using 24 antenna ports (APs) or 32 APs,
- wherein a first CSI-RS configuration for the 24 APs or 32 APs is configured by aggregating a predetermined number of second CSI-RS configurations,
- wherein a number of APs per each of the second CSI-RS configurations is 2, 4, or 8,
- wherein the receiver receives the CSI-RSs with predetermined CSI-RS density,
- wherein the predetermined CSI-RS density is defined as resource elements (REs) mapped to the CSI-RS s of each of the APs per resource block (RB), and
- wherein the receiver receives the predetermined CSI-RS density from the BS using Radio Resource Control (RRC) signaling.
5 more elements
A wireless communication method for a terminal comprising:
- receiving Channel State Information Reference Signals (CSI-RSs), transmitted from a base station (BS), using 24 antenna ports (APs) or 32 APs,
- wherein a first CSI-RS configuration for the 24 APs or the 32 APs is configured by aggregating a predetermined number of second CSI-RS configurations,
- wherein a number of APs per each of the second CSI-RS configurations is 2, 4, or 8,
- wherein the CSI-RSs are received with a predetermined CSI-RS density,
- wherein the predetermined CSI-RS density is defined as resource elements (REs) mapped to the CSI-RSs of each of the APs per resource block (RB), and
- wherein the predetermined CSI-RS density is received from the BS using Radio Resource Control (RRC) signaling.
3 more elements
A base station (BS) comprising:
- a processor;
- and
- a transmitter that transmits, to a terminal, Channel State Information Reference Signals (CSI-RSs) using 24 antenna ports (APs) or 32 Aps,
- wherein a first CSI-RS configuration for the 24 APs or the 32 APs is configured by aggregating a predetermined number of second CSI-RS configurations,
- wherein a number of APs per each of the second CSI-RS configurations is 2, 4, or 8,
- wherein the transmitter transmits the CSI-RS s with predetermined CSI-RS density,
- wherein the predetermined CSI-RS density is defined as resource elements (REs) mapped to the CSI-RSs of each of the APs per resource block (RB), and
- wherein the transmitter transmits the predetermined CSI-RS density to the terminal using Radio Resource Control (RRC) signaling.
5 more elements
A system comprising a base station (BS) and a terminal, wherein:
- the base station comprises:
- a first processor;
- and
- a transmitter that transmits, to a terminal, Channel State Information Reference Signals (CSI-RSs) using 24 antenna ports (APs) or 32 APs, and
- the terminal comprises:
- a second processor;
- and
- a receiver that receives the CSI-RSs,
- wherein a first CSI-RS configuration for the 24 APs or 32 APs is configured by aggregating a predetermined number of second CSI-RS configurations,
- wherein a number of APs per each of the second CSI-RS configurations is 2, 4, or 8,
- wherein the receiver receives the CSI-RSs with predetermined CSI-RS density,
- wherein the predetermined CSI-RS density is defined as resource elements (REs) mapped to the CSI-RSs of each of the APs per resource block (RB), and
- wherein the receiver receives the predetermined CSI-RS density from the BS using Radio Resource Control (RRC) signaling.
10 more elements
Dependencies are inferred from the claim text.