Data transmission method based on non-access stratum messages, base station, and user equipment

A method executed by a user equipment (UE), the method comprising:

• sending a radio resource control (RRC) connection request message;
• and
• receiving an RRC connection setup message through a first signaling radio bearer SRB0 that uses a common control channel (CCCH) logical channel,
• wherein the RRC connection setup message is used for establishing a second signaling radio bearer SRB1 that uses a first dedicated control channel (DCCH) logical channel and establishing a third signaling radio bearer SRB1bis that uses a second DCCH logical channel, the RRC connection setup message includes configuration information for the second signaling radio bearer SRB1 and the third signaling radio bearer SRB1bis, the second signaling radio bearer SRB1 has a first logical channel identifier, the third signaling radio bearer SRB1bis has a second logical channel identifier, and wherein the first logical channel identifier of SRB1 is different from the second logical channel identifier of SRB1bis.

A base station (eNB), comprising:

• receiving circuitry, configured to receive, from a user equipment (UE), a radio resource control (RRC) connection request message;
• and
• sending circuitry, configured to send to the UE an RRC connection setup message through a first signaling radio bearer SRB0 that uses a common control channel (CCCH) logical channel,
• wherein the RRC connection setup message is used for establishing a second signaling radio bearer SRB1 that uses a first dedicated control channel (DCCH) logical channel and establishing a third signaling radio bearer SRB1bis that uses a second DCCH logical channel, the RRC connection setup message includes configuration information for the second signaling radio bearer SRB1 and the third signaling radio bearer SRB1bis, the second signaling radio bearer SRB1 has a first logical channel identifier, the third signaling radio bearer SRB1bis has a second logical channel identifier, and wherein the first logical channel identifier of SRB1 is different from the second logical channel identifier of SRB1bis.

A method executed by a base station (eNB), the method comprising:

• receiving, from a user equipment (UE), a radio resource control (RRC) connection request message;
• and
• sending, to the UE, an RRC connection setup message through a first signaling radio bearer SRB0 that uses a common control channel (CCCH) logical channel,
• wherein the RRC connection setup message is used for establishing a second signaling radio bearer SRB1 that uses a first dedicated control channel (DCCH) logical channel and establishing a third signaling radio bearer SRB1bis that uses a second DCCH logical channel, the RRC connection setup message includes configuration information for the second signaling radio bearer SRB1 and the third signaling radio bearer SRB1bis, the second signaling radio bearer SRB1 has a first logical channel identifier, the third signaling radio bearer SRB1bis has a second logical channel identifier, and wherein the first logical channel identifier of SRB1 is different from the second logical channel identifier of SRB1bis.