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Transmit channel request messaging for half-duplex voice communications systems

  • US 20050190723A1
  • Filed: 02/27/2004
  • Published: 09/01/2005
  • Est. Priority Date: 02/27/2004
  • Status: Active Grant
First Claim
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1. A method of messaging during an active half-duplex session between a plurality of user devices capable of walkie-talkie-like functionality, the method comprising:

  • a first user device of said plurality of user devices while in a receiving in half-duplex (RHD) mode for an active half-duplex session, transmitting a transmit channel request message (TCRM) to a network;

    the network forwarding the TCRM to a second user device of said plurality of user devices while the second user device is in a transmitting in half-duplex (THD) mode for the active half-duplex session; and

    the second user device receiving the TCRM.

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