Patent ID: 8843743
Filing Date: 2014-09-23
Classification: H04L,H04W

Abstract:
1. A method for use in secure wireless communication, the method comprising: generating an encrypted signal by modulating a message using a hierarchical modulation point selected from a hierarchical modulation constellation; and transmitting, by a transmitter, the encrypted signal to a wireless transmit/receive unit (WTRU) that is associated with a zone, wherein: a plurality of trust zones are defined and the signal is encrypted in a way that the encrypted signal can be decrypted by the WTRU with a different level of information depending on a trust zone with which the WTRU is associated; a no trust zone is defined and the signal is encrypted in a way that the encrypted signal cannot be decrypted by the WTRU on a condition that the WTRU is associated with the no trust zone; the generating the encrypted signal includes: the second modulation level cannot be detected in the no trust zone.