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Using wake-up receivers for soft hand-off in wireless communications

  • US 8,755,787 B2
  • Filed: 05/05/2009
  • Issued: 06/17/2014
  • Est. Priority Date: 06/03/2005
  • Status: Active Grant
First Claim
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1. An apparatus configured to facilitate a soft hand-off in wireless communications, comprising:

  • (a) a plurality of low power radio systems, each including;

    (i) a two-way wireless communication device, and(ii) a wake-up receiver; and

    (b) a controller, physically connected to each wake-up receiver to receive signals therefrom and further connected to each two-way wireless communications device to effect two-way communication therethrough, wherein the controller is adapted to select one of the plurality of two-way wireless communication devices for external two-way wireless communications, the selection being made on the basis of an electronic signal received from at least one of the plurality of wake-up receivers, and the selection being made based on a determination, informed by monitoring, that one of the low power radio systems is more reliable than another of the low power radio systems;

    (c) wherein the controller is adapted to wirelessly transmit data via the selected two-way wireless communications device;

    (d) wherein one of the wake-up receivers is adapted to transmit an electronic signal only upon receiving a wake-up signal that includes a class designation corresponding to the apparatus.

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