Method for guaranteeing reliability of packet and apparatus using the same in synchronous wireless distributed communication system

A method for ensuring trustworthiness of a packet, performed by terminals and an apparatus for checking trustworthiness of a packet, in a distributed synchronous wireless communication system, the method comprising:

• transmitting, by a first terminal, a packet including a trust field to a second terminal using distributed wireless communication;
• transmitting, by the second terminal, a trust inquiry packet, which is used to request checking of trustworthiness of the packet received from the first terminal, to a third terminal using distributed wireless communication;
• requesting, by the third terminal, the apparatus to check the trustworthiness of the packet by delivering the trust inquiry packet to the apparatus;
• checking, by the apparatus, the trustworthiness of the packet;
• transmitting, by the apparatus, a trust response packet, corresponding to a result of checking the trustworthiness, to the third terminal;
• transmitting, by the third terminal, the trust response packet to the second terminal;
• and
• confirming, by the second terminal, the result of checking the trustworthiness by receiving the trust response packet.

An apparatus using a method for ensuring trustworthiness of a packet, comprising:

• one or more processors;
• and
• executable memory for storing at least one program executed by the one or more processors,
• wherein the at least one program is configured to,
• when a first terminal transmits a packet including a trust field to a second terminal using distributed wireless communication in a distributed synchronous wireless communication system and when a third terminal receives the packet from the first terminal,
• receive a request to check trustworthiness of the packet by receiving information about a time at which the packet is received and the packet from the third terminal,
• check the trustworthiness of the packet using the trust field included in the packet and the information about the time at which the packet is received,
• generate a trust result notification packet when a result of checking the trustworthiness indicates that the packet is not trusted, and
• transmit the trust result notification packet to the second terminal.