Establishment of random access channel communications

A computer-readable storage medium having stored thereon data representing sequences of instructions that, when executed by a processor, cause the processor to perform operations comprising:

• preparing a random access preamble and a request message for a random access channel (RACH) procedure with an Evolved Node B (eNB) or Next Generation Node B (gNB);
• transmitting a first Radio Resource Control (RRC) RACH procedure message to the eNB or gNB, the first RRC RACH procedure message including a UE identification (ID) and a request message with scheduled transmission content data the UE ID being a common UE ID for RACH procedures between the UE and the eNB or gNB;
• and
• receiving a second RRC RACH procedure message from the eNB or gNB, the second RRC RACH procedure message including contention resolution data for the random access preamble and the request message.

A system for a user equipment (UE) to perform a random access channel (RACH) procedure, the system comprising:

• one or more baseband processors to:
• generate a first Radio Resource Control (RRC) RACH procedure message to transmit to an Evolved Node B (eNB) or Next Generation Node B (gNB), the first RRC RACH procedure message including a UE identification (ID) and a request message with scheduled transmission content data, the UE ID being a common UE ID for RACH procedures between the UE and the eNB or gNB, and
• process a second RRC RACH procedure message received from the eNB or gNB, the second RRC RACH procedure message including contention resolution data for a random access preamble and the request message;
• a memory to store data for the RACH procedure;
• a transmitter or receiver to transmit or receive signals;
• and
• an antenna for wireless signal reception and transmission.