Adaptive cross-layer cross-node optimization

• US 7,975,036 B2
• Filed: 05/11/2006
• Issued: 07/05/2011
• Est. Priority Date: 05/11/2006
• Status: Active Grant

• Current Assignee: Mitre Corporation
• Original Assignee: Mitre Corporation
• Inventors: Dunyak, James, Szelc, Dawn, Shyy, Dong-Jye
• Primary Examiner(s): Shingles, Kristie D
• Application Number:
  US11/431,653
• Publication Number:
  US 20070266134A1
• Time in Patent Office: 1,881 Days
• Field of Search: 709/223, 709/224, 709/230
• US Class Current: 709/223
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 99/00 Subject matter not provided for in other groups of this subclass

Abstract

Methods and systems for adaptive cross-layer cross-node optimization in wireless communication systems are provided. Adaptive cross-layer cross-node optimization allows for conventional cross-layer optimization coupled with the ability to adaptively optimize cross-layer interactions across node boundaries. In one aspect, adaptive cross-layer cross-node optimization includes adaptively and dynamically shifting functions/layers among nodes in a network, so that a global network objective is achieved. In another aspect, adaptive cross-layer cross-node optimization includes adaptively and dynamically distributing functions/layers across a network, according to changes and/or events in the network. In a further aspect, adaptive cross-layer cross-node optimization includes dynamically defining or changing individual node functions within a network, so that a global network functionality may emerge.

Claims

1. A method for cross-layer cross-node enhancement in a wireless communication network having a plurality of nodes, said nodes having one or more processors, the method comprising:

a) sensing network conditions and/or events at one or more of the plurality of nodes;

b) determining, using a set of network objectives, an enhanced distribution of wireless communication network protocol layers among the plurality of nodes based on the sensed network conditions and/or events; and

c) distributing wireless communication network protocol layers among the plurality of nodes according to the determined enhanced distribution of wireless communication network protocol layers, thereby enhancing the network for said set of network objectives;

wherein distributing wireless communication network protocol layers comprises assigning a respective function to a node of the plurality of nodes, the respective function defining for the node one or more respective wireless communication network tasks for performance by the node.

2. The method of claim 1, wherein said sensing step is performed using one or more intelligent engines at said one or more of the plurality of nodes.

3. The method of claim 2, wherein said intelligent engines perform cross-layer enhancement within respective ones of said one or more of the plurality of nodes, according to a set of node objectives associated with each of the plurality of nodes.

4. The method of claim 1, wherein said network conditions include one or more of network traffic conditions, network load conditions, network connectivity conditions, network interference conditions, and network capacity conditions.

5. The method of claim 1, wherein said network events include one or more of network attacks, mission defining events, and node failure/addition events.

6. The method of claim 1, wherein steps (a)-(c) are repeatedly performed over the lifetime of the network, thereby providing dynamic cross-layer cross-node enhancement.

7. The method of claim 1, wherein said determining step comprises:

i) communicating sensed network conditions and/or events between said plurality of nodes;

ii) performing a joint optimization of wireless communication network protocol layers between said plurality of nodes based on said sensed network conditions and/or events, using said set of network objectives.

8. The method of claim 7, wherein said joint optimization of wireless communication network protocol layers is distributedly performed by said plurality of nodes of the network.

9. The method of claim 7, wherein said joint optimization of wireless communication network protocol layers is centrally performed at a central node of the network.

10. The method of claim 1, wherein said set of network objectives includes one or more of security objectives, performance objectives, and mission constraints.

11. The method of claim 1, wherein said determining step comprises determining an enhanced split of network model layers between said plurality of nodes.

12. The method of claim 1, wherein said distributing step includes performing over-the-air software download of wireless communication network protocol layers, according to the enhanced distribution of wireless communication network protocol layers, to said plurality of nodes.

13. The method of claim 12, wherein said plurality of nodes include configurable platform devices.

14. The method of claim 13, wherein said plurality of nodes include software defined radio platforms.

15. The method of claim 13, wherein said plurality of nodes include field programmable gated array platforms.

16. The method of claim 13, wherein said plurality of nodes include tiled processors.

17. The method of claim 1, wherein said distributing step comprises shifting network model layers between an access controller and access points in a Wireless Local Area Network.

18. The method of claim 1, wherein said distributing step comprises distributing a Multiple Input Multiple Output layer to an optimal number of nodes to jointly form a virtual Multiple Input Multiple Output system.

19. The method of claim 1, wherein said distributing step comprises shifting wireless communication network protocol layers between a base station and mobile stations in a cellular network.

20. The method of claim 1, wherein said distributing step comprises shifting wireless communication network protocol layers between routers and joint tactical radio system devices in a tactical network.

21. A wireless network, comprising:

a plurality of nodes, having one or more processors;

one or more intelligent engines located respectively at one or more of the plurality of nodes, wherein the one or more intelligent engines sense network conditions and/or events;

a first module operable to determine, using a set of network objectives, an enhanced distribution of wireless communication network protocol layers among the plurality of nodes based on the sensed network conditions and/or events; and

a second module operable to distribute wireless communication network protocol layers among the plurality of nodes according to the determined enhanced distribution of wireless communication network protocol layers;

wherein the second module comprises a third module operable to assign a respective function to a node of the plurality of nodes, the respective function defining for the node one or more respective wireless communication network tasks for performance by the node.

22. The network of claim 21, wherein the intelligent engines perform cross-layer enhancement within their respective one or more of the plurality of nodes, according to a set of objectives associated with each of the plurality of nodes.

23. The network of claim 21, wherein said network conditions include one or more of network traffic conditions, network load conditions, network connectivity conditions, and network capacity conditions.

24. The network of claim 21, wherein said network events include one or more of network attacks, mission defining events, and node failure/addition events.

25. The network of claim 21, wherein said first module comprises:

a fourth module operable to communicate sensed network conditions and/or events between said plurality of nodes; and

a fifth module operable to perform a joint optimization of wireless communication network protocol layers among said plurality of nodes based on said network conditions and/or events, using said set of network objectives.

26. The network of claim 25, wherein said fifth module is distributedly located at said plurality of nodes.

27. The network of claim 21, wherein said fifth module includes a central node of the network.

28. The wireless network of claim 21, wherein said set of network objectives include one or more of security objectives, performance objectives, and mission constraints.

29. The wireless network of claim 21, wherein said first module comprises a fourth module operable to determine an enhanced split of network model layers among said plurality of nodes.

30. The wireless network of claim 21, wherein said second module comprises a fourth module operable to perform over-the-air software download of wireless communication network protocol layers, according to the enhanced distribution of wireless communication network protocol layers, at said plurality of nodes.

31. A computer program product comprising a computer useable hardware medium including control logic stored therein, the control logic when executed by one or more processors enabling cross-layer cross-node enhancement of a network having a plurality of nodes according to a method, the method comprising:

determining, using a set of network objectives, an enhanced distribution of wireless communication network protocol layers among the plurality of nodes based on network conditions and/or events sensed by said plurality of nodes; and

distributing wireless communication network protocol layers among the plurality of nodes according to the determined enhanced distribution of wireless communication network protocol layers;

wherein distributing wireless communication network protocol layers comprises assigning a respective function to a node of the plurality of nodes, the respective function defining for the node one or more respective wireless communication network tasks for performance by the node.

32. The computer program product of claim 31, wherein said network conditions include one or more of network traffic conditions, network load conditions, network connectivity conditions, and network capacity conditions.

33. The computer program product of claim 31, wherein said network events include one or more of network attacks, mission defining events, and node failure/addition events.

34. The computer program product of claim 31, wherein said determining an enhanced distribution of wireless communication network protocol layers comprises:

receiving sensed network conditions and/or events from said plurality of nodes; and

performing a joint optimization of wireless communication network protocol layers among said plurality of nodes based on said network conditions and/or events, using said set of network objectives.

35. The computer program product of claim 31, wherein said set of network objectives include one or more of security objectives, performance objectives, and mission constraints.

36. The computer program product of claim 31, wherein said determining an enhanced distribution of wireless communication network protocol layers comprises determining an enhanced split of network model layers among said plurality of nodes.

37. The computer program product of claim 31, wherein said distributing wireless communication network protocol layers among the plurality of nodes comprises performing over-the-air software download of wireless communication network protocol layers, according to the enhanced distribution of wireless communication network protocol layers, to said plurality of nodes.