Data processing method for application layer

A data processing method for application layer based on a protocol composed of at least a lower layer and an application layer, the method comprising the steps of:

• receiving a request message receiving primitive (ReqMsgRcv) including an application layer protocol data unit (APDU) from the lower layer;
• making a first decision regarding whether to process the APDU according to a value of an application layer option (ALO) field in the APDU;
• based on a result of the first decision, extracting a message from the APDU;
• making a second decision regarding whether to generate a service description according to the request message receiving primitive (ReqMsgRcv);
• based on a result of the second decision, generating the service description;
• generating a user request receiving primitive (UserReqRcv) primitive including the message;
• and
• transmitting the generated user request receiving primitive (UserReqRcv) to an application software.

A data processing method for application layer based on a protocol composed of at least a lower layer and an application layer, the method comprising the steps of:

• receiving a user response sending primitive (UserResSend) from an upper application software;
• generating a response message according to the user response sending primitive (UserResSend);
• composing an application layer protocol data unit (APDU) including the response message;
• transmitting the ADDU to the network layer using a pre-stored service description;
• and
• completing a communication cycle, wherein the completion step comprises making a first decision regarding whether a service execution time from the network layer is within a service time out (SvcTimeOut), and based on a result of the first decision, making a second decision regarding whether a network layer completing primitive (NLCompleted) is received or not.

A data processing method for application layer based on a protocol composed of at least a lower layer and an application layer, the method comprising the steps of:

• receiving a message receiving primitive (MsgRcv) including an application layer protocol data unit (APDU) from the lower layer;
• making a first decision regarding whether to process the APDU;
• based on a result of the first decision, extracting a message from the APDU;
• making a second decision regarding whether a corresponding service description exists;
• based on a result of the second decision, generating a predetermined primitive;
• and
• transmitting the generated primitive to an upper application software.