Indicating radio capability changes in an inactive state

An apparatus comprising:

• a processor that detects a trigger to change radio capabilities of a user equipment in an inactive state;
• a transmitter that transmits a first message comprising information indicating to change the radio capabilities of the user equipment, wherein the first message comprises a first access stratum message;
• and
• a receiver that:
• receives a second message in response to transmitting the first message, wherein the second message comprises information corresponding to an action, and the second message comprises a second access stratum message;
• and
• receives a third message after receiving the second message, wherein the third message comprises information requesting the radio capabilities of the user equipment;
• wherein:
• the transmitter, in response to receiving the third message, transmits a fourth message comprising the radio capabilities of the user equipment;
• and
• the receiver receives a fifth message after transmitting the fourth message, wherein the fifth message comprises information for configuring a radio resource control of the user equipment and activating data radio bearers of the user equipment, wherein the fifth message is determined based on the radio capabilities of the user equipment.

A method comprising:

• receiving a first message comprising information indicating to change radio capabilities of a user equipment, wherein the first message comprises a first access stratum message, and the first message is received in response to the user equipment detecting a trigger to change the radio capabilities of the user equipment in an inactive state;
• transmitting a second message in response to receiving the first message, wherein the second message comprises information corresponding to an action, and the second message comprises a second access stratum message;
• transmitting a third message after transmitting the second message, wherein the third message comprises information requesting the radio capabilities of the user equipment;
• receiving a fourth message after transmitting the third message, wherein the third message comprises the radio capabilities of the user equipment;
• and
• transmitting a fifth message after receiving the fourth message, wherein the fifth message comprises information for configuring a radio resource control of the user equipment and activating data radio bearers of the user equipment, wherein the fifth message is determined based on the radio capabilities of the user equipment.

An apparatus comprising:

• a receiver that receives a first message comprising information indicating to change radio capabilities of a user equipment, wherein the first message comprises a first access stratum message, and the first message is received in response to the user equipment detecting a trigger to change the radio capabilities of the user equipment in an inactive state;
• and
• a transmitter that:
• transmits a second message in response to receiving the first message, wherein the second message comprises information corresponding to an action, and the second message comprises a second access stratum message;
• and
• transmits a third message after transmitting the second message, wherein the third message comprises information requesting the radio capabilities of the user equipment;
• wherein:
• the receiver receives a fourth message after transmitting the third message, wherein the third message comprises the radio capabilities of the user equipment;
• and
• the transmitter transmits a fifth message after receiving the fourth message, wherein the fifth message comprises information for configuring a radio resource control of the user equipment and activating data radio bearers of the user equipment, wherein the fifth message is determined based on the radio capabilities of the user equipment.