Wireless communication system, wireless communication apparatus, wireless communication method, and program

A wireless communication apparatus comprising:

• a transmitting unit which transmits, to a second apparatus connected through an access point in a wireless communication network, search data on whether the second apparatus is compliant with a direct link setup to the second apparatus;
• a receiving unit which receives search response data from the second apparatus which receives the search data;
• a determining unit which determines whether the direct link setup to the second apparatus is possible based on the search response data;
• and
• a registration control unit which registers the second apparatus in a directly linkable node table, if it is determined that the second apparatus is a communicatee to which the direct link can be set up, the determination comprising determinations that:
• a BSSID included in the search response data is not matched with a BSSID of the wireless communication apparatus, an ESSID included in the search response data is matched with an ESSID of the wireless communication apparatus, and either:
• a channel number representing a frequency band used by the second apparatus is matched with a channel number of the wireless communication apparatus, or
• the channel number representing the frequency band is not matched with a channel number of the wireless communication apparatus, and the wireless communication apparatus or second apparatus has a function of dynamically changing channels during the direct link.

A wireless communication method comprising the steps of:

• transmitting, from a first apparatus to a second apparatus connected through an access point in a wireless communication network, search data on whether the second apparatus is compliant with a direct link setup to the second apparatus;
• receiving search response data from the second apparatus which receives the search data;
• determining whether the direct link setup to the second apparatus is possible based on the search response data;
• and
• registering the second apparatus in a directly linkable node table, if it is determined that the second apparatus is a communicatee to which the direct link can be set up, the determination comprising determinations that:
• a BSSID included in the search response data is not matched with a BSSID of the first apparatus, an ESSID included in the search response data is matched with an ESSID of the first apparatus, and either:
• a channel number representing a frequency band used by the second apparatus is matched with a channel number of the first apparatus, or
• the channel number representing the frequency band is not matched with a channel number of the first apparatus, and the first or second apparatus has a function of dynamically changing channels during the direct link.

A non-transitory computer-readable medium having a program to cause a computer to function as:

• a unit transmitting, from a first apparatus to a second apparatus connected through an access point in a wireless communication network, search data on whether the second apparatus is compliant with a direct link setup to the apparatus;
• a unit receiving search response data from the second apparatus which receives the search data;
• a unit determining whether the direct link setup to the second apparatus is possible based on the search response data;
• and
• a unit registering the second apparatus in a directly linkable node table if it is determined that the second apparatus is a communicatee to which the direct link can be set up, the determination comprising determinations that:
• a BSSID included in the search response data is not matched with a BSSID of the first apparatus, an ESSID included in the search response data is matched with an ESSID of the first apparatus, and either:
• a channel number representing a frequency band used by the second apparatus is matched with a channel number of the first apparatus, or
• the channel number representing the frequency band is not matched with a channel number of the first apparatus, and the first or second apparatus has a function of dynamically changing channels during the direct link.