Embracing wireless interference: analog network coding
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
PPR: partial packet recovery for wireless networks
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
A Wireless MAC Protocol with Collision Detection
IEEE Transactions on Mobile Computing
Harnessing exposed terminals in wireless networks
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
Zigzag decoding: combating hidden terminals in wireless networks
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
Wireless device identification with radiometric signatures
Proceedings of the 14th ACM international conference on Mobile computing and networking
Taking the sting out of carrier sense: interference cancellation for wireless LANs
Proceedings of the 14th ACM international conference on Mobile computing and networking
ZipTx: Harnessing Partial Packets in 802.11 Networks
Proceedings of the 14th ACM international conference on Mobile computing and networking
Enabling MAC protocol implementations on software-defined radios
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
Cross-layer wireless bit rate adaptation
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
SAM: enabling practical spatial multiple access in wireless LAN
Proceedings of the 15th annual international conference on Mobile computing and networking
Order matters: transmission reordering in wireless networks
Proceedings of the 15th annual international conference on Mobile computing and networking
Glia: a practical solution for effective high datarate wifi-arrays
Proceedings of the 15th annual international conference on Mobile computing and networking
CENTAUR: realizing the full potential of centralized wlans through a hybrid data path
Proceedings of the 15th annual international conference on Mobile computing and networking
Fine-grained channel access in wireless LAN
Proceedings of the ACM SIGCOMM 2010 conference
AccuRate: constellation based rate estimation in wireless networks
NSDI'10 Proceedings of the 7th USENIX conference on Networked systems design and implementation
Achieving single channel, full duplex wireless communication
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Successive interference cancellation: a back-of-the-envelope perspective
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
Strider: automatic rate adaptation and collision handling
Proceedings of the ACM SIGCOMM 2011 conference
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
E-MiLi: energy-minimizing idle listening in wireless networks
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
Practical, real-time, full duplex wireless
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
Poster: Single channel, full-duplex wireless
Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
802.11ec: collision avoidance without control messages
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
Weeble: enabling low-power nodes to coexist with high-power nodes in white space networks
Proceedings of the 8th international conference on Emerging networking experiments and technologies
LEAD: leveraging protocol signatures for improving wireless link performance
Proceeding of the 11th annual international conference on Mobile systems, applications, and services
DOMINO: relative scheduling in enterprise wireless LANs
Proceedings of the ninth ACM conference on Emerging networking experiments and technologies
Joint Transmit Power Control and Rate Adaptation for Wireless LANs
Wireless Personal Communications: An International Journal
CLACK: Cross-layer ACK-Aided Opportunistic Transmission in Wireless Networks
Wireless Personal Communications: An International Journal
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A wireless transmitter learns of a packet loss, infers collision, only after completing the entire transmission. If the transmitter could detect the collision early (such as with CSMA/CD in wired networks), it could immediately abort its transmission, freeing the channel for useful communication. There are two main hurdles to realize CSMA/CD in wireless networks. First, a wireless transmitter cannot simultaneously transmit and listen for a collision. Second, any channel activity around the transmitter may not be an indicator of collision at the receiver. This paper attempts to approximate CSMA/CD in wireless networks with a scheme called CSMA/CN (collision notification). Under CSMA/CN, the receiver uses PHY layer information to detect a collision and immediately notifies the transmitter. The collision notification consists of a unique signature, sent on the same channel as the data. The transmitter employs a listener antenna and performs signature correlation to discern this notification. Once discerned, the transmitter immediately aborts transmission. We show that the notification signature can be reliably detected at the listener antenna, even in the presence of a strong self-interference from the transmit antenna. A prototype testbed of 10 USRP/GNURadios demonstrates the feasibility and effectiveness of CSMA/CN