Communication system, wireless communication apparatus, and communication method

摘要

A wireless communication circuit includes a receiver to receive at least one of a beacon frame and a probe response frame from a first wireless communication apparatus belonging to a first communication group, at least one of the beacon frame and the probe response frame including first security information indicating a first encryption method. The circuit includes a transmitter to transmit an association request frame to the first wireless communication apparatus, the association request frame including second security information indicating a second encryption method which is supported by the wireless communication circuit, after a determination that the second encryption method overlaps with the first encryption method. The transmitter declines to associate with the first wireless communication apparatus if the first encryption method fails to overlap with the second encryption method. The transmitter transmits a data frame including a frame body after a reception of an association response frame.

主权项

1. A wireless communication terminal configured to belong to a first group, the wireless communication terminal comprising:
an antenna; and a circuit configured to be coupled to the antenna and configured to: transmit, via the antenna, at least one of a beacon frame and a probe response frame including information on an encryption method, wherein the encryption method is supported by the wireless communication terminal, the encryption method encrypting data to be transmitted to at least one wireless communication apparatus of the first group, the at least one of the beacon frame and the probe response frame is to be received by a first wireless communication apparatus, receive, via the antenna, an association request frame from the first wireless communication apparatus, the association request frame including information on an encryption method, transmit, via the antenna, an association response frame including a status code indicating successful association to the first wireless communication apparatus when the encryption method indicated by the information of the associated request frame matches the encryption method indicated by the information of the at least one of the beacon frame and the probe response frame, and receive, via the antenna, a data frame including data encrypted by the encryption method indicated by the information of the association request frame from the first wireless communication apparatus after a transmission of the association response frame including the status code indicating the successful association, wherein the association request frame includes a frame control field and a frame body, the frame control field includes a type field, and the type field includes information indicating that the association request frame is classified as a management frame, the frame control field further includes a protected frame field and the protected frame field includes information indicating whether the frame body includes encrypted information, and the circuit is further configured to transmit the association response frame including the status code indicating an association failure to the first wireless communication apparatus, when the encryption method indicated in the information of the association request frame does not match the encryption method indicated by the information of the at least one of the beacon frame and the probe response frame.