Connections with multiple congested gateways in packet-switched networks part 1: one-way traffic
ACM SIGCOMM Computer Communication Review
Highly dynamic Destination-Sequenced Distance-Vector routing (DSDV) for mobile computers
SIGCOMM '94 Proceedings of the conference on Communications architectures, protocols and applications
A channel access scheme for large dense packet radio networks
Conference proceedings on Applications, technologies, architectures, and protocols for computer communications
The macroscopic behavior of the TCP congestion avoidance algorithm
ACM SIGCOMM Computer Communication Review
Modeling TCP throughput: a simple model and its empirical validation
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
A performance comparison of multi-hop wireless ad hoc network routing protocols
MobiCom '98 Proceedings of the 4th annual ACM/IEEE international conference on Mobile computing and networking
Power-aware routing in mobile ad hoc networks
MobiCom '98 Proceedings of the 4th annual ACM/IEEE international conference on Mobile computing and networking
PAMAS—power aware multi-access protocol with signalling for ad hoc networks
ACM SIGCOMM Computer Communication Review
Scenario-based performance analysis of routing protocols for mobile ad-hoc networks
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
Capacity of Ad Hoc wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Minimum energy paths for reliable communication in multi-hop wireless networks
Proceedings of the 3rd ACM international symposium on Mobile ad hoc networking & computing
Conserving Transmission Power in Wireless Ad Hoc Networks
ICNP '01 Proceedings of the Ninth International Conference on Network Protocols
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We study the performance metrics associated with TCP-regulated traffic in multi-hop, wireless networks that use a common physical channel (e.g., IEEE 802.11). In contrast to earlier analyses, we focus simultaneously on two key operating metrics--the energy efficiency and the transport-layer (TCP) throughput. Using analysis and simulations, we show how these metrics are strongly influenced by the radio transmission range of individual nodes. Due to tradeoffs between the individual packet transmission energy and the likelihood of retransmissions, the total energy consumption is a convex function of the number of hops (and hence, of the transmission range). On the other hand, the throughput of a single TCP session decreases with a decrease in the transmission range. The overall achievable TCP throughput in an ad-hoc network thus involves a tradeoff between the reduced throughput of an individual flow and the greater degree of spatial reuse possible. As a consequence of this tradeoff, the overall network capacity turns out to be a concave function of the transmission range. We analyze how parameters such as the node density and the radio transmission range affect the overall network capacity under different operating conditions. Our analysis shows that capacity metrics at the TCP layer behave quite differently from the capacity results previously presented in literature. We then extend the work and examine the sensitivity of the TCP-layer capacity to the speed of the nodes and the number of TCP connections in an ad hoc network. By incorporating the notion of a minimal acceptable QoS metric (loss) for an individual session, we show why the QoS-compliant capacity is a more accurate metric for studying the capacity of TCP traffic in an ad hoc network. Finally, we study the dependence of capacity on the source application (Telnet or FTP traffic) and on the choice of the ad hoc routing protocol (AODV, DSR or DSDV).