Method and apparatus for CSI reporting
AssigneeSamsung Electronics Co., Ltd.
InventorsEko Onggosanusi, Hongbo Si, Young-Han Nam
Life of this patent
Estimating the term…
Abstract
For CSI reporting mechanisms, a user equipment (UE) includes a transceiver and a processor operably connected to the transceiver. The transceiver is configured to receive channel state information (CSI) process configuration information including at least one beamformed type associated with a plurality of non-zero-power (NZP) CSI reference signal (CSI-RS) resource configurations and receive a CSI-RS resource index (CRI) reporting configuration. The processor is configured to calculate, in response to receipt of the configuration information, a CRI and a channel quality indicator (CQI). The transceiver is further configured to report the CRI and the CQI by transmitting the CRI and the CQI on an uplink channel.
Claims15
A method by a terminal in a wireless communication system, the method comprising:
- receiving, from a base station, a first information on a channel state information reference signal (CSI-RS) configuration and second information on a CSI-RS resource indicator (CRI) reporting configuration, the CRI reporting configuration at least one of configuring the terminal to calculate a rank indicator (RI) conditioned on the CRI and configuring the terminal to report CRI at a time interval that is an integer multiple of one of a reporting time interval of the RI and a reporting time interval of a channel quality indicator (CQI);
- determining a periodicity and an offset for a CRI reporting based on the second information, in case that a number of antenna ports in configured CSI-RS resources is one;
- and
- transmitting, to the base station, the CRI reporting based on the periodicity and the offset.
A method by a base station in a wireless communication system, the method comprising:
- transmitting, to a terminal, a first information on a channel state information reference signal (CSI-RS) configuration and second information on a CSI-RS resource indicator (CRI) reporting configuration, the CRI reporting configuration at least one of configuring the terminal to calculate a rank indicator (RI) conditioned on the CRI and configuring the terminal to report CRI at a time interval that is an integer multiple of one of a reporting time interval of the RI and a reporting time interval of a channel quality indicator (CQI);
- and
- receiving, from the terminal, a CRI reporting based on a periodicity and an offset for the CRI reporting determined based on the second information, in case that a number of antenna ports in configured CSI-RS resources is one.
A terminal in a wireless communication system, the terminal comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller coupled with the transceiver and configured to:
- receive, from a base station, a first information on a channel state information reference signal (CSI-RS) configuration and second information on a CSI-RS resource indicator (CRI) reporting configuration, the CRI reporting configuration at least one of configuring the terminal to calculate a rank indicator (RI) conditioned on the CRI and configuring the terminal to report CRI at a time interval that is an integer multiple of one of a reporting time interval of the RI and a reporting time interval of a channel quality indicator (CQI),
- determine a periodicity and an offset for a CRI reporting based on the second information, in case that a number of antenna ports in configured CSI-RS resources is one, and
- transmit, to the base station, the CRI reporting based on the periodicity and the offset.
A base station in a wireless communication system, the base station comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller coupled with the transceiver and configured to:
- transmit, to a terminal, a first information on a channel state information reference signal (CSI-RS) configuration and second information on a CSI-RS resource indicator (CRI) reporting configuration, the CRI reporting configuration at least one of configuring the terminal to calculate a rank indicator (RI) conditioned on the CRI and configuring the terminal to report CRI at a time interval that is an integer multiple of one of a reporting time interval of the RI and a reporting time interval of a channel quality indicator (CQI), and
- receive, from the terminal, a CRI reporting based on a periodicity and an offset for the CRI reporting determined based on the second information, in case that a number of antenna ports in configured CSI-RS resources is one.
Dependencies are inferred from the claim text.