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An Integrated Architecture for Seamless Soft Handoff in Mobile Ad Hoc 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 Integrated Architecture for Seamless Soft Handoff in Mobile Ad Hoc Networks
Agency / Branch: DOD / ARMY
Contract: W15P7T-06-C-B604
Award Amount: $68,681.00


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.

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