Supporting QOS in Mobile Networks
Abstract
Research includes new "stateful" and "stateless" quality of service (QOS) architectures, services, and algorithms for the delivery of audio, video, and web data over mobile ad hoc networks (MANETs). Major research contributions include the design, development, analysis, and evaluation of three new protocols that address the problem of MANET QOS at different points in the solution space. The INSIGNIA protocol represents a new "stateful" QOS architecture that requires per-flow soft-state reservations suitable for multimedia communications are set-up and maintained in the network using in-band signaling techniques. The SWAN (Stateless Wireless Ad hoc Networks) protocol represents a departure from per-flow reservations and is based on a stateless approach that cannot offer the same level of QOS performance as INSIGNIA but better scales to support very large numbers of nodes. The Hotspot Mitigation Protocol (HMP) interacts with the MANET routing protocols to redirect new "routes" away from hotspot and congestion-prone areas, therefore, avoiding any further build up of traffic intensity in hotspot regions. Each protocol developed by the project is evaluated using a combination of analysis, simulation and results from experimental wireless testbed deployment. The protocol software from the testbeds and ns simulator extensions is publicly available as open source from the web.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 2002
- Accession Number
- ADA411151
Entities
People
- Andrew T. Campbell
- Mischa Schwartz
Organizations
- Columbia University