Channel state information reference signal
AssigneesTechnology in Ariscale, LLC, Ariscale Inc.
InventorsChoong Won Cho, Jeonghwan Park
Life of this patent
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Abstract
In a Multiple-Input Multiple-Output (MIMO) system including a large number of antenna ports, a base station such as a Node B communicates a total number of antenna ports by communicating the number of antenna ports per Channel State Information Reference Signal (CSI-RS) configuration and one or more CSI-RS configurations. A User Equipment determines the number of antenna ports from the information communicated by the base station by determining the number of CSI-RS configurations sent by the base station and multiplying that number by the number of antenna ports per CSI-RS configuration indicated by the base station.
Claims18
A method performed by a wireless device, the method comprising:
- generating an antenna ports count parameter indicative of a number of antenna ports;
- generating a sequence of Channel State Information Reference Signal (CSI-RS) configuration indications, wherein CSI-RS configuration indications are included in a first resource configuration parameter including a first CSI-RS configuration indication, a first resource configuration list and a second resource configuration list, each list including part of remaining CSI-RS configuration indications, and a total number of antenna ports is equal to a product of a number of CSI-RS configuration indications and the number of antenna ports;
- and
- transmitting the antenna ports count parameter, the first resource configuration parameter, the first resource configuration list and the second resource configuration list.
A method performed by a wireless device, the method comprising:
- receiving an antenna ports count parameter indicative of a number of antenna ports;
- receiving a sequence of Channel State Information Reference Signal (CSI-RS) configuration indications, wherein the CSI-RS configuration indications are included in a first resource configuration parameter including a first CSI-RS configuration indication, a first resource configuration list and a second resource configuration list, each list including part of remaining CSI-RS configuration indications;
- and
- determining a total number of antenna ports, the total number of antenna ports being equal to a product of a number of CSI-RS configuration indications and the number of antenna ports.
Dependencies are inferred from the claim text.