ith a Down- link Control Information (DCI) scheduling PDSCH can be sent with beam 1, and the scheduled PDSCH can be transmitted with another beam, say, beam 2. As a UE may need to apply different receiver parameters for different beams (e.g. beams 1 and 2), a UE can either be indicated with the selected beam with the "TCI state" in the DCI or assume a default beam under some conditions. The characteristics of PDSCH such as numerology, time domain resource allocation, frequency domain resource allocation, DMRS positions, DMRS type, and DMRS waveform can all be indicated dynamically. Note also that in contrast to CRS in LTE, the UE cannot deduce all such characteristics of the demodulation signal for the PDSCH until the necessary DCI fields are parsed. While new spectrum has been identified for 5G NR, allowing 5G NR to operate on spectrum available to LTE is also fundamentally important (e.g. for wide area coverage). 2 For transmission modes 1-6. 13.2 High Data Rate, System Flexibility, and Computational Complexity Hence, coexistence with LTE is also a key consideration for the design of 5G NR. To avoid generating interference to LTE CRS signals, rate matching of the PDSCH over LTE CRS is supported in NR. Also, as the COntrol REsource SET (CORESET) configuration is flexible, and a relevant search space may be located on any symbol in a slot, resource sharing among the NR PDCCH and NR PDSCH is also key. Rate matching in NR provide a unified framework to support all the features. In contrast to LTE, in 5G NR there is no link between the transmission scheme and the CSI feedback scheme configured for the device. While to a large degree the basic CSI acquisition schemes developed in LTE are retained, the CSI acquisition framework with 5G NR is more flexible, and importantly, beam management reference signals and procedures are introduced. At a high level, however, CSI acquisition can still be divided into downlink-signal-based and uplink-signal-based. For the downlink-signal-based CSI acquisition, the SSB (Synchronizati