Wireless Communications
Fine-grained network time synchronization using reference broadcasts
OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
Idle sense: an optimal access method for high throughput and fairness in rate diverse wireless LANs
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Fundamentals of wireless communication
Fundamentals of wireless communication
Analysis of a campus-wide wireless network
Wireless Networks
Comparison of Multichannel MAC Protocols
IEEE Transactions on Mobile Computing
A case for adapting channel width in wireless networks
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
Learning to share: narrowband-friendly wideband networks
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
Proceedings of the 8th ACM SIGCOMM conference on Internet measurement
Sora: high performance software radio using general purpose multi-core processors
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
Softspeak: making VoIP play well in existing 802.11 deployments
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
SMACK: a SMart ACKnowledgment scheme for broadcast messages in wireless networks
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
Frequency-aware rate adaptation and MAC protocols
Proceedings of the 15th annual international conference on Mobile computing and networking
Computationally efficient bandwidth allocation and power control for OFDMA
IEEE Transactions on Wireless Communications
Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints
IEEE Transactions on Wireless Communications
Opportunistic transmission scheduling with resource-sharing constraints in wireless networks
IEEE Journal on Selected Areas in Communications
CSMA/CN: carrier sense multiple access with collision notification
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Listen (on the frequency domain) before you talk
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
Listen before you talk, but on the frequency domain
ACM SIGMOBILE Mobile Computing and Communications Review
Random access heterogeneous MIMO networks
Proceedings of the ACM SIGCOMM 2011 conference
FLUID: improving throughputs in enterprise wireless lans through flexible channelization
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
FERMI: a femtocell resource management system forinterference mitigation in OFDMA networks
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
WiFi-Nano: reclaiming WiFi efficiency through 800 ns slots
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
CRMA: collision-resistant multiple access
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
No time to countdown: migrating backoff to the frequency domain
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
Efficient dynamic spectrum access in vehicular networks using filterbank multicarrier
Proceedings of the 1st International Conference on Wireless Technologies for Humanitarian Relief
WiFi-NC: WiFi over narrow channels
NSDI'12 Proceedings of the 9th USENIX conference on Networked Systems Design and Implementation
CSMA/CN: carrier sense multiple access with collision notification
IEEE/ACM Transactions on Networking (TON)
Picasso: flexible RF and spectrum slicing
Proceedings of the ACM SIGCOMM 2012 conference on Applications, technologies, architectures, and protocols for computer communication
Flashback: decoupled lightweight wireless control
Proceedings of the ACM SIGCOMM 2012 conference on Applications, technologies, architectures, and protocols for computer communication
JMB: scaling wireless capacity with user demands
Proceedings of the ACM SIGCOMM 2012 conference on Applications, technologies, architectures, and protocols for computer communication
Rate adaptation for 802.11 multiuser mimo networks
Proceedings of the 18th annual international conference on Mobile computing and networking
Achieving high data rates in a distributed MIMO system
Proceedings of the 18th annual international conference on Mobile computing and networking
Frame retransmissions considered harmful: improving spectrum efficiency using Micro-ACKs
Proceedings of the 18th annual international conference on Mobile computing and networking
Building efficient spectrum-agile devices for dummies
Proceedings of the 18th annual international conference on Mobile computing and networking
Picasso: flexible RF and spectrum slicing
ACM SIGCOMM Computer Communication Review - Special october issue SIGCOMM '12
Flashback: decoupled lightweight wireless control
ACM SIGCOMM Computer Communication Review - Special october issue SIGCOMM '12
JMB: scaling wireless capacity with user demands
ACM SIGCOMM Computer Communication Review - Special october issue SIGCOMM '12
Bringing cross-layer MIMO to today's wireless LANs
Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM
Harnessing receive diversity in distributed multi-user MIMO networks
Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM
Whole-home gesture recognition using wireless signals
Proceedings of the 19th annual international conference on Mobile computing & networking
Fine-grained spectrum adaptation in WiFi networks
Proceedings of the 19th annual international conference on Mobile computing & networking
NEMOx: scalable network MIMO for wireless networks
Proceedings of the 19th annual international conference on Mobile computing & networking
Beyond OFDM: best-effort dynamic spectrum access using filterbank multicarrier
IEEE/ACM Transactions on Networking (TON)
From RSSI to CSI: Indoor localization via channel response
ACM Computing Surveys (CSUR)
A resource management system for interference mitigation in enterprise OFDMA femtocells
IEEE/ACM Transactions on Networking (TON)
AirSync: enabling distributed multiuser MIMO with full spatial multiplexing
IEEE/ACM Transactions on Networking (TON)
CLACK: Cross-layer ACK-Aided Opportunistic Transmission in Wireless Networks
Wireless Personal Communications: An International Journal
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Modern communication technologies are steadily advancing the physical layer (PHY) data rate in wireless LANs, from hundreds of Mbps in current 802.11n to over Gbps in the near future. As PHY data rates increase, however, the overhead of media access control (MAC) progressively degrades data throughput efficiency. This trend reflects a fundamental aspect of the current MAC protocol, which allocates the channel as a single resource at a time. This paper argues that, in a high data rate WLAN, the channel should be divided into separate subchannels whose width is commensurate with PHY data rate and typical frame size. Multiple stations can then contend for and use subchannels simultaneously according to their traffic demands, thereby increasing overall efficiency. We introduce FICA, a fine-grained channel access method that embodies this approach to media access using two novel techniques. First, it proposes a new PHY architecture based on OFDM that retains orthogonality among subchannels while relying solely on the coordination mechanisms in existing WLAN, carrier-sensing and broadcasting. Second, FICA employs a frequency-domain contention method that uses physical layer RTS/CTS signaling and frequency domain backoff to efficiently coordinate subchannel access. We have implemented FICA, both MAC and PHY layers, using a software radio platform, and our experiments demonstrate the feasibility of the FICA design. Further, our simulation results suggest FICA can improve the efficiency ratio of WLANs by up to 400% compared to existing 802.11.