COMMUNICATION SYSTEM ALLOWING NETWORK NODES TO EFFICIENTLY ESTABLISH COMMUNICATIONS WITH A CONTROLLER
First Claim
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1. A first node in a data network including a plurality of nodes, the first node comprising:
- a computational device and a memory for storing identification related information of the first node, said computational device configured to;
receive a first signal, the first signal including information used to align a response signal from the first node;
randomly generate information within said first node and store said randomly generated information in the memory of the first node;
send the response signal from the first node, wherein said response signal includes the randomly generated information;
receive a second signal, wherein a portion of the second signal is derived from the randomly generated information contained in the response signal;
said second signal enabling sending of a subsequent-response signal that uniquely identifies the first node;
determine whether the second signal contains information which matches the randomly generated information stored in said memory of the first node;
send the subsequent-response signal which comprises a packet that includes identification related information of the first node, said subsequent-response signal from the first node being sent only if the portion of the second signal matches the randomly generated information that is stored in the first node;
wherein the first signal, the response signal, the second signal and the subsequent-response signal occur on a common frequency channel; and
wherein a time for sending the subsequent-response signal occurs with an alignment that is varied with respect to a time said first signal was received.
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Abstract
A communication system is provided that includes a controller and a system to allow efficient transmission of information with a plurality of nodes. The information includes an alignment signal provided from the controller to enable the nodes to align their response signals. The information further includes node identification information. Once alignment and identification occur, nodes can then transmit packet data to the controller.
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Citations
7 Claims
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1. A first node in a data network including a plurality of nodes, the first node comprising:
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a computational device and a memory for storing identification related information of the first node, said computational device configured to; receive a first signal, the first signal including information used to align a response signal from the first node; randomly generate information within said first node and store said randomly generated information in the memory of the first node; send the response signal from the first node, wherein said response signal includes the randomly generated information; receive a second signal, wherein a portion of the second signal is derived from the randomly generated information contained in the response signal;
said second signal enabling sending of a subsequent-response signal that uniquely identifies the first node;determine whether the second signal contains information which matches the randomly generated information stored in said memory of the first node; send the subsequent-response signal which comprises a packet that includes identification related information of the first node, said subsequent-response signal from the first node being sent only if the portion of the second signal matches the randomly generated information that is stored in the first node; wherein the first signal, the response signal, the second signal and the subsequent-response signal occur on a common frequency channel; and wherein a time for sending the subsequent-response signal occurs with an alignment that is varied with respect to a time said first signal was received. - View Dependent Claims (2, 3)
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4. A controller in a data network, the data network including a plurality of nodes including a first node, the controller comprising:
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at least one processor; a memory providing code to the at least one processor; and at least one interface configured by the at least one processor to; transmit a first signal from the controller, the first signal including information used to align a response signal; receive the response signal, wherein said response signal includes a portion that is randomly generated; transmit a second signal from the controller, wherein a portion of the second signal is derived from the randomly generated portion of the response signal;
said second signal enabling transmission of a subsequent-response signal;receive the subsequent-response signal which comprises a packet that includes identification related information; wherein the first signal, the response signal, the second signal and the subsequent-response signal occur on a common frequency channel; and wherein a time for receiving the subsequent-response signal occurs with an alignment that is varied with respect to a time said first signal was sent. - View Dependent Claims (5, 6, 7)
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Specification