Radio frequency local area network

  • US 7,457,646 B2
  • Filed: 07/31/2003
  • Issued: 11/25/2008
  • Est. Priority Date: 05/13/1991
  • Status: Expired due to Fees
First Claim
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1. A communication network supporting wireless communication comprising:

  • at least one roaming wireless terminal node selectively operable in a sleep mode and in an awake mode;

    at least one bridging node for relaying messages, the bridging node storing messages for wireless terminal nodes and transmitting at predetermined intervals a first message that indicates the presence of pending messages, the bridging node forwarding a stored message upon request from a wireless terminal node; and

    the wireless terminal node, while in a sleep mode, wakes to listen to a first message transmitted from a bridging node to determine whether to request a pending message.

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