Systems and methods for providing random access channel (rach) signaling to user equipment (ue) during inactive direct transmissions

A machine-readable medium comprising instructions that, when executed, cause a Base Station (BS) to:

• receive a message 1 (Msg1) or a message A (MsgA) preamble based on a Random Access Channel (RACH) configuration for a Radio Resource Control (RRC) inactive data transmission;
• receive a message 3 (Msg3) or a MsgA Physical Uplink Shared Channel (PUSCH) comprising uplink (UL) data via configured resources;
• and
• transmit a message 4 (Msg4) or a message B (MsgB) in response to the Msg3 or the MsgA PUSCH.

A Base Station (BS) comprising:

• communication circuitry;
• and
• one or more processors communicatively coupled to the communication circuitry and configured to:
• configure a dedicated preamble group for a Radio Resource Control (RRC) inactive data transmission;
• receive, via the communication circuitry, a message 1 (Msg1) or a message A (MsgA) preamble based on a Random Access Channel (RACH) configuration for the RRC inactive data transmission, wherein the RACH configuration is a dedicated RACH configuration for the RRC inactive data transmission and the Msg1 or MsgA preamble is one of the dedicated preamble group;
• receive, via the communication circuitry, a message 3 (Msg3) or a MsgA Physical Uplink Shared Channel (PUSCH) comprising uplink (UL) data via configured resources;
• and
• transmit, via the communication circuitry, a message 4 (Msg4) or a message B (MsgB) in response to the Msg3 or the MsgA PUSCH.