Communication method in vehicular wireless communication system and vehicular wireless communication system for transmission of necessary information only from a sensor to the network

A wireless communication system comprising:

• a wireless connection providing apparatus that provides wireless connection, the wireless connection providing apparatus including a processor configured to:
• acquire subscription information for specifying necessary information;
• generate a control frame configured to notify surroundings of a presence of the wireless connection providing apparatus, the control frame including the subscription information having a plurality of attribute information including at least one of:
• (i) a producer of the necessary information, (ii) a generation place of the necessary information, and (iii) a generation time of the necessary information;
• and
• transmit the control frame, and
• a wireless communication apparatus capable of performing wireless communication with the wireless connection providing apparatus, the wireless communication apparatus including a processor configured to:
• receive the control frame;
• determine whether the wireless communication apparatus retains information, which is specified as being necessary by the subscription information included in the control frame;
• and
• establish connection to the wireless connection providing apparatus and then transmitting the information, in response to a determination that the wireless communication apparatus retains the information.

A wireless communication apparatus configured to communicate with a wireless connection providing apparatus, the wireless communication apparatus comprising:

• a wireless network interface configured to perform wireless communication with the wireless connection providing apparatus;
• and
• a processor configured to:
• receive, from a wireless connection providing apparatus that provides wireless connection, a control frame notifying a presence of the wireless connection providing apparatus, the control frame including subscription information having a plurality of attribute information including at least one of:
• (i) a producer of the necessary information, (ii) a generation place of the necessary information, and (iii) a generation time of the necessary information;
• determine whether the wireless communication apparatus retains information, which is specified as being necessary by the subscription information included in the control frame;
• and
• establish connection to the wireless connection providing apparatus and then transmit the subscription information, in response to a determination that the apparatus itself retains the information.