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An Adaptive Geographic Internet Sub-Protocol for Dynamic Wireless Networks

Award Information

Department of Defense
Award ID:
Program Year/Program:
2005 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Intelligent Automation, Inc.
15400 Calhoun Drive Suite 400 Rockville, MD -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2005
Title: An Adaptive Geographic Internet Sub-Protocol for Dynamic Wireless Networks
Agency / Branch: DOD / NAVY
Contract: N68335-06-C-0034
Award Amount: $80,000.00


In order to seamlessly integrate ad hoc and sensor networks with the Internet, we introduce a novel entity called Internet Sub-protocol Manager (ISM) that serves as the "bridge" between the standard IP and our geographic sub-protocol (SP). The standard IP stack (either IPv4 or IPv6) needs not to be changed. Rather, the ISM will encapsulate the original IP packets within the sub-protocol payload and provide an IP-in-SP tunneling. The sub-protocol exploits the geographical and mobility information available from the GPS equipped communication node and achieves position-based routing that incurs less storage and less processing overhead. The geographic routing provides alternate paths for such wireless nodes. While current geographic routing protocols are impractical, our proposed Cross Link Detection Protocol (CLDP) guarantees that geographic routing between all pairs of nodes will never fail. We have demonstrated that our approach achieves geographic routing correctly on real radio networks. ISM and our geographic routing protocol can be easily configured and we provide an efficient mechanism for wireless routing packet format discovery. In addition, we propose to adaptively manage the routes via proactive prediction of link expiration time and describe a method for differentiating link failure and congestion.

Principal Investigator:

Hongjun Li
Senior Research Scientist

Business Contact:

Mark James
Contracts and Proposals Manager
Small Business Information at Submission:

15400 Calhoun Drive, Suite 400 Rockville, MD 20855

EIN/Tax ID: 521497192
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No