Patent ID: 7920073

Claim:
A method for receiving traffic information by a mobile terminal, the method comprising: receiving a service frame including service component frames and an encryption indicator field indicating a data encryption mechanism, wherein each of the service component frames includes a MBR (minimum bounding rectangle) field containing a first MBR value and a component data field containing a corresponding traffic information message for informing the mobile terminal of a corresponding traffic situation, wherein the traffic information message is encoded by the data encryption mechanism, wherein each traffic information message includes location information corresponding thereto, and wherein the first MBR value of each service component frame indicates a first region to which the location information corresponds; reading the first MBR values from the service component frames; generating a second MBR value indicating a second region determined based on a current location of the mobile terminal for receiving the traffic information or a path comprising a departure point and a destination point; selecting at least one MBR value by comparing the first MBR values with the second MBR value, wherein the first region indicated by the at least one first MBR value overlaps with a second region indicated by the second MBR value; and decoding the traffic information message included in the component data field corresponding to the at least one first MBR value by using the data encryption mechanism, wherein one of the first region and the second region is obtained by using a minimum bounding rectangle (MBR) method or a minimum bounding radius method.