Method and apparatus for performing service discovery in neighbor awareness network nan

A method for performing service discovery in a neighbor awareness network (NAN), comprising:

• receiving, by a second device, a service message sent by a first device, wherein the service message comprises a first service identifier, the service message is used to query a service required by the first device or broadcast a service supported by the first device, the first service identifier is generated by the first device according to change information and first service information in the NAN, the first service information is information about the service queried by the first device or information about the service supported by the first device, and the change information comprises:
• global change information in the NAN, or change information of the first device;
• obtaining, by the second device, the change information in the NAN, and generating a second service identifier according to the change information and second service information, wherein if the first service information is the information about the service supported by the first device, the corresponding second service information is information about a service queried by the second device, or if the first service information is the information about the service queried by the first device, the corresponding second service information is information about a service supported by the second device;
• and
• matching, by the second device, the first service identifier and the second service identifier, and if the matching succeeds, sending, by the second device, a service response message to the first device;
• wherein
• the first device and the second device are devices in the NAN.