Patent ID: 8472622

Claim:
A wireless communication method, comprising steps of: (a) providing an original information; (b) encoding the original information into an encoded data regarding a designated bit-energy-to-noise-ratio, the encoding comprising (b1) scrambling the original information with an encryption key, and (b2) encoding the encryption key into an encoded encryption key with at least one encoding stage regarding the designated bit-energy-to-noise-ratio, with the encoded data comprising the encoded encryption key and the scrambled information, and with the designated bit-energy-to-noise-ratio being adjusted with a number of unit-words inverted in the encoded encryption key after a last encoding stage; (c) transmitting the encoded data to form a virtual antenna radiation pattern covering a designated region with boundary defined by a sharp cutoff based on the designated bit-energy-to-noise-ratio; (d) receiving the encoded data; and (e) decoding the encoded data into the original information only when receivers within the designated region have a bit-energy-to-noise-ratio of no less than the designated bit-energy-to-noise-ratio.