| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide methods and apparatus for efficient two-stage paging wireless communications systems. <P>SOLUTION: Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated into a first paging signal (using non-coherent modulation) to be communicated from a base station to a wireless terminal. WT rises, receives the first paging signal, and checks whether the paging group should wait for a second paging signal. If so, the WT is operated to receive the second paging signal. Otherwise, the WT goes back to sleep conserving power. The base station modulates a number of second message information bits (using coherent modulation) to transmit signals to WTs. A WT can determine that it is the paged WT from the information in the first and the second paging signals to process paging instructions. The objective invoked WT can transmit an acknowledgement signal on a dedicated uplink resources. <P>COPYRIGHT: (C)2011,JPO&INPIT |
