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Presence indication in a wireless communication system

  • US 9,913,237 B2
  • Filed: 07/28/2014
  • Issued: 03/06/2018
  • Est. Priority Date: 03/27/2012
  • Status: Active Grant
First Claim
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1. A transmission method for use in a wireless communication system comprising at least one terminal and at least one base station controlling at least two transmission points which may each be controlled to broadcast a first signal, wherein:

  • one of the transmission points broadcasts the first signal;

    the terminal discovers said transmission point by receiving the first signal broadcast from said transmission point;

    the terminal thereafter transmits a discovery indication in the form of a second signal which depends on at least one characteristic of the received first signal; and

    the base station, in response to receiving the second signal from the terminal, enables a third signal including any one or more of a broadcast channel, a paging channel, a broadcast reference signal, and a synchronization sequence to be broadcast from said transmission point only when one or more terminals are present.

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