4. The method of claim 1 , wherein the first service information includes a service name and an advertisement identifier both corresponding to the hash value.
4. The method of claim 1 , wherein the first service information includes a service name and an advertisement identifier both corresponding to the hash value. 5. The method of claim 4 , wherein the hash value corresponds to a hash-converted prefix included in all WFA (WiFi Alliance) services, and wherein a service name corresponding to the hash value is a prefix included in all WFA services when the second wireless device supports at least one WFA service, and wherein the advertisement identifier is set to have a predetermined value.