This paper studies media access protocols for a single channel wireless LAN being developed at Xerox Corporation's Palo Alto Research Center and develops a new protocol, MACAW, which uses an RTS-CTS-DS-DATA-ACK message exchange and includes a significantly different backoff algorithm.
This paper designs and implements a new Robust Rate Adaptation Algorithm (RRAA), which uses short-term loss ratio to opportunistically guide its rate change decisions, and an adaptive RTS filter to prevent collision losses from triggering rate decrease.
Proceedings IEEE INFOCOM . Conference on Computer…
22 April 2001
TLDR
The initial simulation results show that the PCMA can improve the throughput performance of the non-power controlled IEEE 802.11 by a factor of 2 with potential for additional scalability as source-destination pairs become more localized, thus providing a compelling reason for migrating to a new power controlled multiple access wireless MAC protocol standard.
Preliminary performance evaluation shows that CEDAR is a robust and adaptive QoS routing algorithm that reacts effectively to the dynamics of the network while still approximating link-state performance for stable networks.
This paper uses an approximation to the minimum connected dominating set (MCDS) of the ad-hoc network topology as the virtual backbone, and maintains local copies of the global topology of the network, along with shortest paths between all pairs of nodes.
A general analytical framework is proposed that captures the unique characteristics of shared wireless channels and allows the modeling of a large class of system-wide fairness models via the specification of per-flow utility functions and generates local contention resolution mechanisms in response to a given utility function.
An ideal wireless fair-scheduling algorithm which provides a packetized implementation of the fluid mode, while assuming full knowledge of the current channel conditions is described, and the worst-case throughput and delay bounds are derived.
MCEDAR is an extension to the CEDAR architecture and provides the robustness of mesh based routing protocols and the efficiency of tree based forwarding protocols and it decouples the control infrastructure from the actual data forwarding infrastructure.
WTCP is rate-based, uses only end-to-end mechanisms, performs rate control at the receiver, and uses inter-packet delays as the primary metric for rate control, and can improve on the performance of comparable algorithms such as TCP-NewReno, TCP-Vegas, and Snoop-TCP by up to 200% for typical operating conditions.
This work describes a self-organizing, dynamic spine structure within each lower level cluster to propagate topology changes, compute updated routes in the background, and provide backup routes in case of transient failures of the primary routes.