Method and apparatus for transmitting and receiving data in mission critical data communication system

A method, performed by a transmitting Mission Critical Data (MCData) User Equipment (UE) in a wireless communication system, the method comprising:

• transmitting, to a receiving MCData UE, a short data service (SDS) message including a disposition request type Information Element (IE) which is set as Delivery and Read, wherein a timer is initiated at the receiving MCData UE, in case that a setting of the disposition request type IE as the Delivery and Read is identified at the receiving MCData UE;
• in case that a display indication is received based on reading of the SDS message at the receiving MCData UE before expiry of the timer, receiving, from the receiving MCData UE, a consolidated disposition notification message including a Delivery and Read notification;
• and
• in case that a display indication is not received at the receiving MCData UE, before expiry of the timer, receiving, from the receiving MCData UE, a first disposition notification message including a Delivered notification.

A receiving Mission Critical Data (MCData) User Equipment (UE) in a wireless communication system, comprising:

• a transceiver;
• and
• at least one processor configured to:
• control the transceiver to receive, from a transmitting MCData UE, a short data service (SDS) message including a disposition request type Information Element (IE),
• initiate a timer in case that the receiving MCData UE identifies that the disposition request type IE is set as Delivery and Read,
• identify whether a display indication is received by reading the SDS message before expiry of the timer,
• in case that the display indication is received before expiry of the timer, control the transceiver to transmit, to the transmitting MCData UE, a consolidated disposition notification message including a Delivery and Read notification, and
• in case that the display indication is not received before expiry of the timer, control the transceiver to transmit, to the transmitting MCData UE, a first disposition notification message including a Delivered notification.

A transmitting Mission Critical Data (MCData) User Equipment (UE) in a wireless communication system, comprising:

• a transceiver;
• and
• at least one processor configured to:
• control the transceiver to transmit, to a receiving MCData UE, a short data service (SDS) message including a disposition request type Information Element (IE) which is set as Delivery and Read, wherein a timer is initiated at the receiving MCData UE, in case that a setting of the disposition request type IE as the Delivery and Read is identified at the receiving MCData UE,
• in case that a display indication is received based on reading of the SDS message at the receiving MCData UE before expiry of the timer, control the transceiver to receive, from the receiving MCData UE, a consolidated disposition notification message including a Delivery and Read notification, and
• in case that the display indication is not received at the receiving MCData UE, before expiry of the timer, control the transceiver to receive, from the receiving MCData UE, a first disposition notification message including a Delivered notification.