2) and rach 3 (no This is the first message from ue to enb when you power it on Rach stands for random access channel
Rachel Loren
It is an essential part of wireless communication systems, including 5g (nr), 4g (lte) and even 3g (wcdma)
It plays a significant role in establishing an initial connection (initial access) between a device and a network.
When multiple ues attempt to access the network simultaneously, they transmit a short signal called a preamble on the rach channel. Rach procedure is the very first handshake between your phone and the cell tower before the real communication begins Let's break down this connection process in a fun way using analogies! For mobile networks, the random access channel (rach) procedures are fundamental for the initial connection of the ue, during a handover, and for uplink synchronization.
The random access channel (rach) is a critical component of wireless communication systems, including 5g It allows user equipment (ue) to initiate communication with the network, request resources, and handle mobility events like handovers. There are two main types of rach procedures in 5g: In 5g wireless networks, rach (random access channel) is a critical component of the radio interface that facilitates the initial access and establishment of communication between the user equipment (ue) and the base station, also known as the gnodeb.
