Patent ID: 9220127
Filing Date: 2015-12-22
Classification: H04L,H04W

Abstract:
1. A wireless network system comprising: a plurality of devices operating on the basis of incompatible and different standards, wherein at least one of the devices comprises: wherein, in the case that the standard judgment module judges that the version is old, if the manipulation detection code comparator judges that the two are coincident with each other, an old version manipulation detection code, calculated based on an algorism of the old version including a cipher key common to a transmitting side by the manipulation detection code calculator, is added to an acknowledge signal and then transmitted, and if the manipulation detection code comparator judges that the two are not coincident with each other, the old version manipulation detection code, calculated based on the algorism of the old version including the cipher key common to the transmitting side by the manipulation detection code calculator, is added to a non-acknowledge signal and then transmitted, and wherein, in the case that the standard judgment module judges that the version is new, if the manipulation detection code comparator judges that the two are coincident with each other, a new version manipulation detection code, calculated based on an algorism of the new version including a cipher key common to the transmitting side by the manipulation detection code calculator, is added to an acknowledge signal and then transmitted, and if the manipulation detection code comparator judges that the two are not coincident with each other, the new version manipulation detection code, calculated based on the algorism of the new version including the cipher key common to the transmitting side by the manipulation detection code calculator, is added to a non-acknowledge signal and then transmitted.