Communication system, wireless communication apparatus, and communication method
First Claim
1. A wireless communication terminal configured to belong to a first communication group, the wireless communication terminal comprising:
- an antenna;
a memory configured to store a first encryption method used by the first communication group to protect at least one of broadcast communication or multicast communication in the first communication group;
a transmitter configured to transmit, via the antenna, a beacon frame including information of the first encryption method;
a receiver configured to receive, via the antenna, an association request frame from a first wireless communication apparatus, the association request frame including information of a second encryption method supported by the first wireless communication apparatus; and
circuitry configured to, prior to completion of establishment of a connection between the wireless terminal and the first wireless communication apparatus, check whether the second encryption method is equal to the first encryption method to determine whether a request of the association request frame is permitted or rejected,wherein the transmitter is further configured to transmit, via the antenna, an association response frame indicating either one of an association successful or an association failure, and the connection between the wireless communication terminal and the first wireless communication apparatus is not established,wherein the receiver is further configured to receive, via the antenna, a data frame after a transmission of the association response frame indicating the association successful and the completion of establishment of the connection between the wireless communication terminal and the first wireless communication apparatus, a frame body of the data frame including data encrypted by the second encryption method, the data frame is either one of broadcast communication or multicast communication in the first communication group, and one of destinations of the data frame is the wireless communication terminal, andwherein the association request frame includes a frame control field and a frame body, the frame body includes the information of the second encryption method, 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.
1 Assignment
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Accused Products
Abstract
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.
27 Citations
16 Claims
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1. A wireless communication terminal configured to belong to a first communication group, the wireless communication terminal comprising:
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an antenna; a memory configured to store a first encryption method used by the first communication group to protect at least one of broadcast communication or multicast communication in the first communication group; a transmitter configured to transmit, via the antenna, a beacon frame including information of the first encryption method; a receiver configured to receive, via the antenna, an association request frame from a first wireless communication apparatus, the association request frame including information of a second encryption method supported by the first wireless communication apparatus; and circuitry configured to, prior to completion of establishment of a connection between the wireless terminal and the first wireless communication apparatus, check whether the second encryption method is equal to the first encryption method to determine whether a request of the association request frame is permitted or rejected, wherein the transmitter is further configured to transmit, via the antenna, an association response frame indicating either one of an association successful or an association failure, and the connection between the wireless communication terminal and the first wireless communication apparatus is not established, wherein the receiver is further configured to receive, via the antenna, a data frame after a transmission of the association response frame indicating the association successful and the completion of establishment of the connection between the wireless communication terminal and the first wireless communication apparatus, a frame body of the data frame including data encrypted by the second encryption method, the data frame is either one of broadcast communication or multicast communication in the first communication group, and one of destinations of the data frame is the wireless communication terminal, and wherein the association request frame includes a frame control field and a frame body, the frame body includes the information of the second encryption method, 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method at least partially implemented by an electronic circuit of a wireless communication terminal that includes an antenna and is configured to belong to a first communication group, the method comprising:
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storing, in a memory, a first encryption method used by the first communication group to protect at least one of broadcast communication or multicast communication in the first communication group; transmitting, with a transmitter and via the antenna, a beacon frame including information of the first encryption method; receiving, with a receiver configured to receive and via the antenna, an association request frame from a first wireless communication apparatus, the association request frame including information of a second encryption method supported by the first wireless communication apparatus; and checking, with circuitry and prior to completion of establishment of an connection between the wireless terminal and the first wireless communication apparatus, whether the second encryption method is equal to the first encryption method to determine whether a request of the association request frame is permitted or rejected, wherein the method further includes; transmitting, with the transmitter and via the antenna, an association response frame indicating either one of an association successful or an association failure, the connection between the wireless communication terminal and the first wireless communication apparatus not being established, receiving, with the receiver and via the antenna, a data frame after a transmission of the association response frame indicating the association successful and the completion of establishment of the connection between the wireless communication terminal and the first wireless communication apparatus, a frame body of the data frame including data encrypted by the second encryption method, the data frame is either one of broadcast communication or multicast communication in the first communication group, and one of destinations of the data frame is the wireless communication terminal, and wherein the association request frame includes a frame control field and a frame body, the frame body includes the information of the second encryption method, 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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification