Redundant radio frequency network having a roaming terminal communication protocol
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Accused Products
Abstract
Disclosed herein is a redundant network and communication protocol at least including host computers, RF base stations, and roaming terminals. The network may utilize a polling communication protocol such that under heavy traffic conditions, a roaming terminal wishing to initiate communication may be required to determine whether the channel is clear by listening for an entire interpoll gap time. When a hidden terminal is communicating, the roaming terminal may conclude that the communication is taking place upon receiving a polling frame directed to the hidden terminal from the normally silent base station. Inherent redundancy techniques may be used with a spanning tree approach for determining the most efficient pathways from a source to a destination and ensuring that the network adapts to spatial changes or breakdowns within the network.
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Citations
34 Claims
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1-20. -20. (canceled)
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21. A method of beginning a data exchange over a wireless communication channel between a destination device and a sending device, the method comprising:
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waiting, by the sending device, a period of time that is at least as long as a first predetermined time period and detecting no communication on the wireless communication channel during the period of time;
attempting, by the sending device, to initiate communication to the destination device; and
if the attempt to initiate communication to the destination device proves successful, transmitting, by the sending device and the destination device, a series of packets wherein each two consecutive packet transmissions are separated by no more than a second predetermined time period. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of beginning a data exchange over a wireless communication channel between a destination device and a sending device, the method comprising:
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waiting, by the sending device, a period of time that is at least as long as a predetermined time period and detecting no communication on the wireless communication channel during the period of time, the predetermined time period being at least the maximum expected time span between transmissions from the destination device to a device communicating with the destination device;
attempting, by the sending device, to initiate communication to the destination device; and
if the attempt to initiate communication to the destination device proves successful, transmitting, by the sending device, at least one packet to the destination device. - View Dependent Claims (32, 33, 34)
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Specification