Proceedings of the 7th annual international conference on Mobile computing and networking
Time synchronization in ad hoc networks
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
Medium access control with coordinated adaptive sleeping for wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Proceedings of the 10th annual international conference on Mobile computing and networking
A scalable model for channel access protocols in multihop ad hoc networks
Proceedings of the 10th annual international conference on Mobile computing and networking
PE-WASUN '04 Proceedings of the 1st ACM international workshop on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
A general model of wireless interference
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
A measurement-based approach to modeling link capacity in 802.11-based wireless networks
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
A Clock Synchronization Algorithm for Multihop Wireless Ad Hoc Networks
Wireless Personal Communications: An International Journal
DW-MAC: a low latency, energy efficient demand-wakeup MAC protocol for wireless sensor networks
Proceedings of the 9th ACM international symposium on Mobile ad hoc networking and computing
Modeling per-flow throughput and capturing starvation in CSMA multi-hop wireless networks
IEEE/ACM Transactions on Networking (TON)
A MAC protocol for multi-packet ad-hoc wireless network utilizing multi-antenna
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Modeling and performance analysis of DMAC for wireless sensor networks
Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Synchronization of multihop wireless sensor networks at the application layer
IEEE Wireless Communications
IEEE Journal on Selected Areas in Communications
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A class of carrier sense multiple access (CSMA) protocols used in a broad range of wireless applications uses synchronized contention where nodes periodically contend at intervals of fixed duration. While several models exist for asynchronous CSMA contention used in protocols like IEEE 802.11 MAC, no model exists for synchronized CSMA contention that also incorporates realistic factors like clock drifts. In this paper, we introduce a model that quantifies the interplay of clock drifts with contention window size, control packet size, and carrier sense regulated by usage of guard time. Using a field programmable gate array (FPGA)-based MAC protocol implementation and controlled experiments on a wireless testbed, we evaluate the model predictions on the isolated and combined impact of these key performance factors to per-flow throughput and fairness properties in both single-hop and multihop networks. Our model and experimental evaluation reveal conditions on protocol parameters under which the throughput of certain flows can exponentially decrease; while at the same time, it enables solutions that can offset such problems in a predictable manner.