Ofinno proposes new SIBx for early CSI/SRS/TRS configurations

Ofinno submitted two contributions titled RAN2 impacts of MIMO Enhancements to RAN2, the radio access network working group two. One appeared at RAN2 #135 and the other at RAN2 #135-bis. MIMO means multiple input multiple output, the term used in both contribution titles. CSI means channel state information, SRS means sounding reference signal, and TRS means tracking reference signal. SIB means system information block, with SIB1 the existing block and SIBx the proposed new block. In the first contribution, Ofinno asked RAN2 to discuss "whether the early CSI/SRS/TRS configurations are provided in the SIB1 or in a new SIBx".

Source: R2-2604991, Ofinno, 3GPP TSG RAN WG2 #135. © Ofinno.

At RAN2 #135-bis, Ofinno's Proposal 2 asked RAN2 to introduce "a new SIBx carrying the early CSI/SRS/TRS configurations". Under that proposal, SIB1 would carry only legacy scheduling information for SIBx, without additional early CSI/SRS/TRS information. The register lists R2-2604991 as noted at RAN2 #135 and R2-2607232 as noted at RAN2 #135-bis. Our reading: noted status does not establish an agreement to introduce SIBx. Our reading: Ofinno moved from asking where to put the configurations to proposing a new SIBx.

Source: R2-2607232, Ofinno, 3GPP TSG RAN WG2 #135-bis. © Ofinno.