Electronic device for preventing packet drop for uplink transmission

An electronic device, comprising:

• a first processor configured to perform wireless communication with a local area data network (LADN);
• and
• a second processor electrically connected with the first processor and configured to generate a data packet for uplink transmission,
• wherein the first processor is configured to:
• receive a first message from the LADN indicating that a wireless communication session with the LADN is deactivated rather than released, as the electronic device has departed from a geographic service area of the LADN,
• wherein the first processor is configured to determine whether the wireless communication session is deactivated, according to whether a radio resource corresponding to the wireless communication session is released, the release includes release of the radio resources and tunneling with the LADN, and removal of information associated with the LADN, and
• wherein deactivation includes release of the radio resources and tunneling, and retaining of information associated with the LADN;
• transmit a second message to the second processor indicating that the wireless communication session is released rather than deactivated, whereas the LADN is deactivated rather than released;
• and
• after detecting that the wireless communication session is deactivated, initiate buffering of data packets for the uplink transmission in absence of transmitting the data packet to the LADN,
• wherein the first processor is configured to set a condition for terminating the buffering of data packets for the uplink transmission, and while the set condition is not met and the electronic device remains within the geographic service area of the LADN, transmit buffered data packets to the LADN.

An electronic device, comprising:

• at least one processor configured to perform wireless communication with a local area data network (LADN);
• and
• a memory, electrically connected with the at least one processor, storing instructions executable by the at least one processor to cause the electronic device to:
• generate data packets for uplink transmission with the LADN,
• detect deactivation rather than released of a wireless communication session with the LADN,
• wherein release includes release of radio resources and tunneling with the LADN, and removal information associated with the LADN, and
• wherein deactivation includes release of radio resources and tunneling, and retaining of information associated with the LADN,
• detect whether the wireless communication session is deactivated because the electronic device has left a geographic service area of the LADN, wherein the wireless communication session is detected as deactivated according to whether a radio resource corresponding to the wireless communication session is released,
• when detecting that the wireless communication session is deactivated because electronic device has left the geographic service area, transmitting a message to another processor that the wireless communication session is released, whereas the wireless communication session is deactivated rather than released, to cause the another processor to terminate the generation of data packets for the uplink transmission,
• wherein after the electronic device leaves the geographic service area of the LADN, the at least one processor stores in the memory at least any one of an address of the electronic device, a domain name server (DNS) address, and quality of service (QoS) information, and
• when detecting that deactivation is unrelated to the geographic service area and the electronic device remains in the geographic service area, continue generating the data packet for uplink transmission, transmit a service request to the LADN, and reactivate the wireless communication session for transmission of the generated data packet.