Wireless Link Management
Modeling GSM media access, link, routing, and transport layers
- Validated ns modeling suite and BONES simulator
- GSM channel error models from Ericsson
QoS and link scheduling for next generation links
- High Speed Circuit Switched Data (HSCSD), General Packet Radio System (GPRS), and Wideband CDMA (W-CDMA)
- RSVP signaling integration with bottleneck link scheduling
Reliable Link Protocols
- Wireless links have high error rates (> 1%)
- Reliable transport protocols (TCP) interpret errors as congestion
- Solution is ARQ protocol, but retransmissions introduce jitter