Method and system of communicating between a plurality of nodes that are part of a cooperative broadcast multi-hop network that employs broadcast flood routing and multi-hop transmission using a direct-sequence spread-spectrum (DSSS) waveform
AssigneeGeneral Dynamics Mission Systems, Inc.
InventorsScott David Blanchard, David Kunil Lee
Life of this patent
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Abstract
A method and system of communicating between a plurality of nodes are provided. The plurality of nodes are part of a cooperative broadcast multi-hop network that employs broadcast flood routing and multi-hop transmission using a direct-sequence spread-spectrum (DSSS) waveform.
Claims20
A method of communicating between a plurality of nodes that are part of a cooperative broadcast multi-hop network that employs broadcast flood routing and multi-hop transmission using a direct-sequence spread-spectrum (DSSS) waveform, the method comprising:
- at each of the plurality of nodes:
- when transmitting as an original sender:
- broadcasting each transmission on a unique channel for that node that is defined by an odd numbered hop interval assigned to that node and a unique scramble code assigned to that node, wherein each transmission is modulated using:
- the unique scramble code for that node that identifies transmissions from that node to distinguish them from transmissions by other nodes and a common scramble code that is shared with the other nodes, wherein each transmission that broadcast has a direct-sequence spread-spectrum (DSSS) signal having DSSS waveform;
- when operating as a relay node:
- re-transmitting any transmissions that are received error free from other nodes on another unique channel for that node that is defined by an even numbered hop interval assigned to that node and the unique scramble code assigned to that node;
- and
- receiving transmissions from other nodes that are original senders and multipath components thereof on the odd numbered hop intervals, and receiving re-transmitted transmissions from other nodes that are relays and multipath components thereof on the even numbered hop intervals.
A system comprising a plurality of nodes that are part of a cooperative broadcast multi-hop network that employs broadcast flood routing and multi-hop transmission using a direct-sequence spread-spectrum (DSSS) waveform, wherein each of the plurality of nodes comprise at least one hardware-based processor and memory that comprises processor-executable instructions encoded on a non-transient processor-readable media, wherein the processor-executable instructions, when executed by the processor, are configurable to cause:
- when transmitting as an original sender:
- broadcasting each transmission on a unique channel for that node that is defined by an odd numbered hop interval assigned to that node and a unique scramble code assigned to that node, wherein each transmission is modulated using:
- the unique scramble code for that node that identifies transmissions from that node to distinguish them from transmissions by other nodes and a common scramble code that is shared with the other nodes, wherein each transmission that broadcast has a direct-sequence spread-spectrum (DSSS) signal having DSSS waveform;
- when operating as a relay node:
- re-transmitting any transmissions that are received error free from other nodes on another unique channel for that node that is defined by an even numbered hop interval assigned to that node and the unique scramble code assigned to that node;
- and
- receiving transmissions from other nodes that are original senders and multipath components thereof on the odd numbered hop intervals, and receiving re-transmitted transmissions from other nodes that are relays and multipath components thereof on the even numbered hop intervals.
Dependencies are inferred from the claim text.