Method for contact verification based on received signal similarity and apparatus thereof

One or more non-transitory computer-readable medium storing one or more instructions,

• wherein the computer-readable medium is configured to:
• receive and store spatiotemporal signal information capable of specifying time and space from a plurality of user equipments (UEs),
• extract the spatiotemporal signal information of a specific user among the stored spatiotemporal signal information,
• configure the extracted spatiotemporal signal information of the specific user as reference spatiotemporal signal information, and compare similarity between the reference spatiotemporal signal information and the other stored spatiotemporal signal information, and
• determine whether or not there is contact between the specific user and another user based on the similarity,
• wherein the computer-readable medium is configured to compare the similarity between the reference spatiotemporal signal information and the other stored spatiotemporal signal information by:
• performing a first similarity test to search spatiotemporal signal information having timestamp information similar to timestamp information of the reference spatiotemporal signal information among a plurality of stored spatiotemporal signal information;
• performing a second similarity test to search spatiotemporal signal information having a signal type and signal strength similar to a signal type and signal strength of the reference spatiotemporal signal information among the spatiotemporal signal information searched as a result of the first similarity test;
• and
• performing a third similarity test to search spatiotemporal signal information having a state value of an environment similar to a state value of an environment of the reference spatiotemporal signal information, when it contains environmental status values that indicate changes in the environment, among the spatiotemporal signal information searched as a result of the second similarity test.

An apparatus of contact verification comprising:

• a communication module configured to receive spatiotemporal signal information from a plurality of user equipments (UEs);
• and
• a processor configured to store the spatiotemporal signal information, extract the spatiotemporal signal information of a specific user among the stored spatiotemporal signal information, configure the extracted spatiotemporal signal information of the specific user as reference spatiotemporal signal information, and compare similarity between the reference spatiotemporal signal information and the other stored spatiotemporal signal information, and determine whether or not there is contact between the specific user and another user based on the similarity,
• wherein the processor is configured to compare the similarity between the reference spatiotemporal signal information and the other stored spatiotemporal signal information by:
• performing a first similarity test to search spatiotemporal signal information having timestamp information similar to timestamp information of the reference spatiotemporal signal information among a plurality of stored spatiotemporal signal information;
• performing a second similarity test to search spatiotemporal signal information having a signal type and signal strength similar to a signal type and signal strength of the reference spatiotemporal signal information among the spatiotemporal signal information searched as a result of the first similarity test;
• and
• performing a third similarity test to search spatiotemporal signal information having a state value of an environment similar to a state value of an environment of the reference spatiotemporal signal information, when it contains environmental status values that indicate changes in the environment, among the spatiotemporal signal information searched as a result of the second similarity test.