Method and apparatus for session release in wireless communication

A method for wireless communication, comprising:

• sending one or more PDU session release requests to a wireless communication network system to request a PDU session release procedure, a timer being used for the one or more PDU session release requests;
• starting the timer when each of the one or more PDU session release requests is sent, wherein the one or more PDU session release requests include a procedure transaction identifier (PTI) allocated for the PDU session release procedure;
• determining whether a network response is received from the wireless communication network system before the timer expires,
• restarting the timer when a network response is not received and the timer expires;
• counting a number of times that the timer expires and the network response is not received from the wireless communication system;
• determining whether the number of times that the timer expires reaches a predetermined number of times that is two or more times;
• and
• when the network response is not received and the number of times that the timer expires reaches the predefined number of times:
• locally releasing the PDU session;
• aborting the PDU session release procedure;
• and
• releasing the allocated PTI.

A non-transitory computer readable medium having computer readable instructions stored thereon which, when executed by a processing circuit, cause the processing circuit to perform a method of wireless communication, the method comprising:

• sending one or more PDU session release requests to a wireless communication network system to request a PDU session release procedure, a timer being used for the one or more PDU session release requests;
• starting the timer when each of the one or more PDU session release requests is sent, wherein the one or more PDU session release requests include a procedure transaction identifier (PTI) allocated for the PDU session release procedure;
• determining whether a network response is received from the wireless communication network system before the timer expires;
• restarting the timer when a network response is not received and the timer expires;
• counting a number of times that the timer expires and the network response is not received from the wireless communication system;
• determining whether the number of times that the timer expires reaches a predetermined number of times that is two or more times;
• and
• when the network response is not received and the number of times that the timer expires reaches the predefined number of times:
• locally releasing the PDU session;
• aborting the PDU session release procedure;
• and
• releasing the allocated PTI.