Chapter 17: Random Access
Abstract
Random access is the procedure used when the device initiates a connection with the network. This chapter discusses the procedures around random access, both two-step and four-step procedures, and the details around the random-access preamble.
Keywords
Random access; Preamble; Two-step RACH
In most cases, an NR uplink transmission takes place using a dedicated resource that is assigned by the network/cell for that specific transmission. As a consequence, there is no risk for collision with transmissions from other devices within the cell. This is true for scheduled data transmission on PUSCH as well as for control signaling on PUCCH. It is also true for the transmission of sounding-reference signals SRS. ...
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