Wireless communication system with channel hopping and redundant connectivity
First Claim
1. A wireless system comprising:
- at least one initiating device;
a responding device;
wherein the wireless system is configured to perform wireless communication in which;
the initiating and responding devices may communicate on more than one channel selected from a list of channels;
the responding device intermittently has an interruption in its normal operation to listen for a transmission from an initiating device, each interruption of the responding device is sufficiently long to receive a transmission of at least one message requesting time synchronization information;
the initiating device repeatedly sends a transmission of messages on each of two or more channels requesting time synchronization information of the responding device allowing time between transmissions for receiving a response from the responding device;
the responding device receives the transmission from the initiating device during an interruption, the responding device remains on the same channel during the interruptions for a selected number of interruptions for receiving a transmission from the initiating device;
the initiating device repeatedly sends the transmission messages requesting time synchronization information on channels selected from a series of sequences of channels, for a period of time during and in between a number of interruptions equal to or greater than the selected number of interruptions;
each sequence of channels contains all channels from the list of channels in a different permutation;
a message requesting time synchronization information is transmitted on each channel from the sequence of channels;
each sequence of channels from the series of sequences of channels is used for transmissions of the message requesting time synchronization information such that the message requesting time synchronization information is transmitted on all channels from the list of channels during the selected number of interruptions; and
the responding device sends time synchronization information of the responding device to the initiating device following a reception of the transmission from the initiating device.
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Accused Products
Abstract
A wireless system having an infrastructure node and several leaf nodes in a non-redundant version or having at least two infrastructure nodes and several leaf nodes in a redundant version. Leaf nodes may individually seek out timing information in order to be in synch with an infrastructure node. Upon receipt of synch information from an infrastructure node, the respective leaf node may send data to the infrastructure node. In the case of a redundant system, primary and secondary nodes may be selected from a list of infrastructure nodes. Communications between an infrastructure node and a leaf node may occur on one of a number of channels, and the channel may be changed for communications between the nodes. In the case of a redundant system, a single transmission from the leaf node is received simultaneously by the redundant infrastructure nodes.
70 Citations
87 Claims
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1. A wireless system comprising:
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at least one initiating device; a responding device; wherein the wireless system is configured to perform wireless communication in which; the initiating and responding devices may communicate on more than one channel selected from a list of channels; the responding device intermittently has an interruption in its normal operation to listen for a transmission from an initiating device, each interruption of the responding device is sufficiently long to receive a transmission of at least one message requesting time synchronization information; the initiating device repeatedly sends a transmission of messages on each of two or more channels requesting time synchronization information of the responding device allowing time between transmissions for receiving a response from the responding device; the responding device receives the transmission from the initiating device during an interruption, the responding device remains on the same channel during the interruptions for a selected number of interruptions for receiving a transmission from the initiating device; the initiating device repeatedly sends the transmission messages requesting time synchronization information on channels selected from a series of sequences of channels, for a period of time during and in between a number of interruptions equal to or greater than the selected number of interruptions; each sequence of channels contains all channels from the list of channels in a different permutation; a message requesting time synchronization information is transmitted on each channel from the sequence of channels; each sequence of channels from the series of sequences of channels is used for transmissions of the message requesting time synchronization information such that the message requesting time synchronization information is transmitted on all channels from the list of channels during the selected number of interruptions; and the responding device sends time synchronization information of the responding device to the initiating device following a reception of the transmission from the initiating device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A wireless system comprising:
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at least one initiating device; at least two responding devices; wherein the wireless system is configured to perform wireless communication in which; the initiating and responding devices may communicate on more than one channel selected from a list of channels; each responding device intermittently has an interruption in its normal operation to listen for a transmission from an initiating device, the interruption is sufficiently long to receive a transmission of at least one message requesting time synchronization information, the responding device remains on the same channel during the interruptions for a selected number of interruptions for receiving a transmission from the initiating device; each responding device is synchronized to a system clock; an initiating device repeatedly sends a transmission of messages on each of two or more channels requesting time synchronization information of the responding device until a response is received, allowing time between transmissions for receiving the response; the initiating device repeatedly sends the transmission of messages requesting time synchronization information on channels selected from a series of sequences of channels, for a period of time during and in between a number of interruptions equal to or greater than the selected number of interruptions; each sequence of channels contains all channels from the list of channels in a different permutation; a message requesting time synchronization information is transmitted on each channel from the sequence of channels; each sequence of channels from the series of sequences of channels is used for transmissions of the message requesting time synchronization information such that the message requesting time synchronization information is transmitted on all channels from the list of channels during the selected number of interruptions; one or more responding devices receive the transmission from the initiating device during an interruption; and a responding device that first receives a transmission from the initiating device during an interruption sends time synchronization information of the responding device to the initiating device. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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46. The system of 45, wherein the one or more transmissions may comprise at least one re-transmission.
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56. A wireless system comprising:
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at least one initiating device; a responding device; wherein the wireless system is configured to perform wireless communication in which; the at least one initiating device and responding device can communicate on more than one channel selected from a list of channels; the at least one initiating device is time synchronized with the responding device; the responding device has a normal operation of communicating with the at least one initiating device; the at least one initiating device sends a message to the responding device within a designated time; and the responding device intermittently has an interruption in its normal operation to carry out other activities;
including listening for a message requesting time synchronization information of the responding device from an initiating device not time synchronized with the responding device;the responding device remains on the same channel during the interruptions for a selected number of interruptions for receiving a transmission from the at least one initiating device; the initiating device not time synchronized with the responding device repeatedly sends messages requesting time synchronization information on channels selected from a series of sequences of channels; each sequence of channels contains all channels from the list of channels in a different permutation; a message requesting time synchronization information is transmitted on each channel from the sequence of channels; and each sequence of channels from the series of sequences of channels is used for transmissions of the message requesting time synchronization information such that the message requesting time synchronization information is transmitted on all channels from the list of channels during the selected number of interruptions. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A wireless system comprising:
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at least one initiating device; at least two responding devices; wherein the wireless system is configured to perform wireless communication in which; the at least one initiating device and the at least two responding devices can communicate on more than one channel selected from a list of channels; the two or more responding devices have a normal operation of communicating with an initiating device; the responding devices are synchronized to a system clock; the at least one initiating device is time synchronized with the at least two responding devices; the initiating device sends a message to the responding devices within a designated time; the responding devices each intermittently have an interruption in their normal operation to carry out other activities including listening for a message requesting time synchronization information of the responding device from an initiating device not time synchronized with the responding devices each of the responding devices remain on the same channel during the interruptions for a selected number of interruptions for receiving a transmission from the at least one initiating device; the initiating device not time synchronized with the responding device repeatedly sends messages requesting time synchronization information on channels selected from a series of sequences of channels; each sequence of channels contains all channels from the list of channels in a different permutation; a message requesting time synchronization information is transmitted on each channel from the sequence of channels; and each sequence of channels from the series of sequences of channels is used for transmissions of the message requesting time synchronization information such that the message requesting time synchronization information is transmitted on all channels from the list of channels during the selected number of interruptions. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
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Specification