Random access procedures in next gen networks

An apparatus comprising:

• a non-transitory memory including instructions to perform random access;
• and
• a processor operably coupled to the non-transitory memory and configured to execute the instructions of:
• obtaining configuration parameters for a common physical random access channel (PRACH) resource on a network,
• selecting a preamble from a cell based upon a device type and a service type,
• transmitting, to a node, the selected preamble via the common PRACH resource, and
• monitoring a downlink control channel for a random access responses (RAR).

An apparatus comprising:

• a non-transitory memory including instructions to perform random access;
• and
• a processor operably coupled to the non-transitory memory and configured to execute the instructions of:
• obtaining configuration parameters for a slice-specific physical random access channel (PRACH) resource;
• randomly selecting a preamble from a slice of the network based upon a device type and a service type;
• transmitting, to a node, the randomly selected preamble via the slice-specific PRACH resource;
• and
• monitoring a downlink control channel for a random access response (RAR).

An apparatus comprising:

• a non-transitory memory including instructions to perform random access;
• and
• a processor operably coupled to the non-transitory memory and configured to execute the instructions of:
• selecting a preamble from a cell based upon a device type and a service type;
• transmitting the selected preamble and an accompanying grantless message;
• monitoring a downlink control channel for a random access response (RAR);
• receiving, from a node, a connection setup message and an uplink grant;
• and
• transmitting, via the received uplink grant, a status message on a connection.