Digraph network superframes
View Patent ↗A method of assigning cells in a superframe using digraph link information in a network of nodes is disclosed. The method comprises determining a total number of desired digraph links in the network of nodes wherein a digraph link is a directional link specifying routing information at each node in the network between said node and a second node, and wherein the network of nodes includes a plurality of nodes each with a plurality of digraph links. The method further comprises selecting a superframe size at least large enough to accommodate the total number of desired digraph links and assigning each desired digraph link to a cell in the superframe wherein each cell in the superframe specifies a synchronized time and frequency communication plan.
1. A network of nodes comprising:
A plurality of nodes;
wherein each of the plurality of nodes is associated with at least one link;
wherein the at least one link comprises a periodic communication between two or more of the plurality of nodes;
wherein two or more of the plurality of nodes that are associated with the periodic communication are synchronized in time; and
wherein a characteristic of the periodic communication is varied according to a known sequence, wherein the known sequence of each period associated with a cycle number is based at least in part on a time slot within the period of the periodic communication, a channel, and the cycle number.
2. A network as in claim 1 , wherein the periodic communication is scheduled according to a superframe.
3. A network as in claim 2 , wherein the superframe is one of a plurality of superframes.
4. A network as in claim 3 , wherein the plurality of superframes are operating concurrently.
5. A network as in claim 1 , wherein the periodic communication comprises transmitting an radio wave by a first node and receiving the radio wave by a second node.
6. A network as in claim 1 , wherein the characteristic of the periodic communication that is varied comprises a frequency that is varied according to a known sequence.
7. A network as in claim 6 , wherein the frequency comprises a frequency in the 902-928 MHz ISM band.
8. A network as in claim 6 , wherein the frequency comprises a frequency in the 2.4-2.483 GHz ISM band.
9. A network as in claim 1 , wherein the periodic communication occurs as part of a cycle.
10. A network as in claim 1 , wherein the periodic communication occurs at a regular interval.
11. A network as in claim 1 , wherein the periodic communication occurs at a known irregular interval.
12. A network as in claim 1 , wherein the periodic communication includes an acknowledgement of receipt.
13. A network as in claim 1 , wherein the at least one link includes a redundant link.
14. A network as in claim 13 , wherein the redundant link is not used in the event that there is no data to be sent.
15. A network as in claim 1 , wherein a node of the plurality of nodes includes a crystal oscillator.
16. A network as in claim 15 , wherein the crystal oscillator comprises a 32 kHz quartz crystal.
17. A network as in claim 15 , wherein the node includes a temperature sensor.
18. A network as in claim 15 , wherein the node includes a compensation circuit.
19. A network as in claim 1 , wherein the two or more of the plurality of nodes are synchronized in time at least in part by exchanging timing information.
20. A network as in claim 1 , wherein the at least one link is between a transmitting vertex and a receiving vertex.
21. A network as in claim 20 , wherein one of the two or more of the plurality of nodes associated with the at least one link comprises the transmitting vertex.
22. A network as in claim 20 , wherein one of the two or more of the plurality of nodes associated with the at least one link comprises the receiving vertex.
23. A network as in claim 20 , wherein the transmitting vertex is associated with a digraph.
24. A network as in claim 20 , wherein the receiving vertex is associated with a digraph vertex.
25. A method of communicating for a network of nodes comprising:
transmitting a communication, using a radio transmitter, from a node to one or more of a plurality of network nodes;
wherein each of the plurality of nodes is associated with at least one link;
wherein the at least one link comprises a periodic communication;
wherein two or more of the plurality of network nodes that are associated with the periodic communication are synchronized in time; and
wherein a characteristic of the periodic communication is varied according to a known sequence, wherein the known sequence of each period associated with a cycle number is based at least in part on a time slot within the period of the periodic communication, a channel, and the cycle number.
26. A method of communicating for a network of nodes comprising:
receiving a communication, using a radio receiver, at one or more nodes from one of a plurality of network nodes;
wherein each of the plurality of nodes is associated with at least one link;
wherein the at least one link comprises a periodic communication;
wherein two or more of the plurality of network nodes that are associated with the periodic communication are synchronized in time; and
wherein a characteristic of the periodic communication is varied according to a known sequence, wherein the known sequence of each period associated with a cycle number is based at least in part on a time slot within the period of the periodic communication, a channel, and the cycle number.