Method for Compressing Wireless Channel State Information Feedback

A method for reporting wireless channel state information (CSI), comprising:

• receiving, by a wireless terminal device, CSI reference signals (CSI-RS's) transmitted from a wireless access network node;
• generating, by the wireless terminal device based on measuring the CSI-RS's, one or more indicators associated with one or more nonzero elements in a CSI feedback information in a vector space determined by a set of first basis vectors, a set of second basis vectors, a set of third basis vectors;
• and
• transmitting, by the wireless terminal device, information pertaining to the one or more nonzero elements in the CSI feedback information and to the one or more indicators to the wireless access network node.

A method for reporting wireless channel state information (CSI), comprising:

• transmitting, by a wireless access network node, CSI reference signals (CSI-RS's) to a wireless terminal device;
• and
• receiving, by a wireless access network node, a CSI report based on measurement of the CSI-RS's by the wireless terminal device,
• wherein the CIS report comprises:
• information pertaining to one or more indicators associated with one or more nonzero elements in a CSI feedback information generated by the wireless terminal device in a vector space determined by a set of first basis vectors, a set of second basis vectors, and a set of third basis vectors;
• and
• information pertaining the one or more nonzero elements.