Method and system for connectionless transmission during uplink and downlink of data packets

A user equipment (UE) in a network, the UE comprising:

• a transceiver;
• and
• at least one processor configured to control the transceiver to:
• transmit, to a radio access network (RAN) node, a random access channel (RACH) message including identifier information for identifying a serving gateway in a core network,
• receive, from the RAN node, a random access (RA) response message including uplink (UL) grant information, and
• transmit, to the RAN node, a data message including encrypted data in an idle mode,
• wherein the data message is transmitted from the RAN node to the serving gateway based on the identifier information, and
• wherein the encrypted data is generated by the UE, and the encrypted data is decrypted by the serving gateway.

A method for receiving a message by a radio access network (RAN) node in a network, the method comprising:

• receiving, by the RAN node, from a user equipment (UE), a random access channel (RACH) message including identifier information for identifying a serving gateway in a core network;
• transmitting, by the RAN node, to the UE, a random access (RA) response message including uplink (UL) grant information;
• receiving, by the RAN node, from the UE in an idle mode, a data message including encrypted data;
• identifying, by the RAN node, the serving gateway based on the identifier information;
• and
• transmitting, by the RAN node, to the serving gateway, the data message,
• wherein the encrypted data is generated by the UE, and the encrypted data is decrypted by the serving gateway.

A radio access network (RAN) node in a network, the RAN node comprising:

• a transceiver;
• and
• at least one processor configured to:
• control the transceiver to:
• receive, from a user equipment (UE), a random access channel (RACH) message including identifier information for identifying a serving gateway in a core network,
• transmit, to the UE, a random access (RA) response message including uplink (UL) grant information, and
• receive, from the UE in an idle mode, a data message including encrypted data,
• identify the serving gateway based on the identifier information, and
• control the transceiver to transmit, to the serving gateway, the data message,
• wherein the encrypted data is generated by the UE, and the encrypted data is decrypted by the serving gateway.