Telefonaktiebolaget LM Ericsson (publ)
CSI REFERENCE SIGNALING IN LTE/NR COEXISTENCE

Abstract:

A method of operating a network node in a NR radio access network includes transmitting channel state information reference signaling, CSI-RS, the CSI-RS having a CSI-RS pattern in frequency domain over a range of subcarriers including a reference subcarrier, wherein in a first frequency range below the reference subcarrier, the CSI-RS pattern includes a first sub-pattern represented by a repeated flush arrangement of a pattern element covering a number NP of subcarriers, and in a second frequency range above the reference subcarrier, the CSI-RS pattern includes a second sub-pattern represented by a repeated flush arrangement of the pattern element, wherein the first sub-pattern and the second sub-pattern are separated in frequency domain by an interrupting pattern having a number NI of subcarriers, wherein NI> 0 and NI is different from NP. The disclosure also pertains to related methods and devices.