An Integrated Architecture for Seamless Soft Handoff in Mobile Ad Hoc Networks

Award Information
Agency: Department of Defense
Branch: Army
Contract: W15P7T-06-C-B604
Agency Tracking Number: A052-113-0625
Amount: $68,681.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solicitation Year: 2005
Solicitation Topic Code: A05-113
Solicitation Number: 2005.2
Small Business Information
15400 Calhoun Drive, Suite 400, Rockville, MD, 20855
DUNS: 161911532
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Hongjun (Jason) Li
 Senior Research Scientist
 (301) 294-5275
Business Contact
 Mark James
Title: Contracts and Proposals Manager
Phone: (301) 294-5221
Research Institution
We present an integrated architecture for seamless soft handoff in mobile ad hoc networks, where various managers residing on multiple layers are proposed to handle handoff issues in a cross-layer and cooperative manner. At the link adaptation layer, the virtual interface provides link transparency to the upper layers and session management is handled at the interface manager. The device and system monitor reports information about the wireless interfaces, and the policy manager incorporates various aspects of factors for comparing interfaces. The handoff is optimized to execute policy-based decisions to keep network traffic delay and traffic congestion to a minimum. At the network layer, essentially most IP-based ad hoc routing protocols can be accommodated, and the architecture can naturally host QoS protocols, like Differentiated Services with admission control. In particular, we present our hybrid Mobile Agent Routing (MAR) protocol that possesses such desirable behaviors and supports various traffic types. At the transport layer, the transport manager is instructed by the interface manager to adapt the transmission rate according to the new wireless link. Finally at the application layer, the security manager handles various aspects of security concerns, including defense against man-in-the-middle attacks.

* information listed above is at the time of submission.

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