Literature Database Entry

bloessl2014timings


Bastian Bloessl, Andre Puschmann, Christoph Sommer and Falko Dressler, "Timings Matter: Standard Compliant IEEE 802.11 Channel Access for a Fully Software-based SDR Architecture," Proceedings of 20th ACM International Conference on Mobile Computing and Networking (MobiCom 2014), 9th ACM International Workshop on Wireless Network Testbeds, Experimental evaluation and Characterization (WiNTECH 2014), Maui, HI, September 2014, pp. 57-63.

Abstract

We present a solution for enabling standard compliant channel access for a fully software-based Software Defined Radio (SDR) architecture. With the availability of a GNU Radio implementation of an Orthogonal Frequency Division Multiplexing (OFDM) transceiver, there is substantial demand for standard compliant channel access. It has been shown that implementation of CSMA on a host PC is infeasible due to system-inherent delays. The common approach is to fully implement the protocol stack on the FPGA, which makes further updates or modifications to the protocols a complex and time consuming task. We take another approach and investigate the feasibility of a fully software-based solution and show that standard compliant broadcast transmissions are possible with marginal modifications of the FPGA. We envision the use of our system for example in the vehicular networking domain, where broadcast is the main communication paradigm. We show that our SDR solution exactly complies with the IEEE 802.11 Distributed Coordination Function (DCF) as well as Enhanced Distributed Channel Access (EDCA) timings. We were even able to identify shortcomings of commercial systems and prototypes.

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Bastian Bloessl
Andre Puschmann
Christoph Sommer
Falko Dressler

BibTeX reference

@inproceedings{bloessl2014timings,
    author = {Bloessl, Bastian and Puschmann, Andre and Sommer, Christoph and Dressler, Falko},
    title = {{Timings Matter: Standard Compliant IEEE 802.11 Channel Access for a Fully Software-based SDR Architecture}},
    booktitle = {20th ACM International Conference on Mobile Computing and Networking (MobiCom 2014), 9th ACM International Workshop on Wireless Network Testbeds, Experimental evaluation and Characterization (WiNTECH 2014)},
    pages = {57-63},
    year = {2014},
    month = {September},
    address = {Maui, HI},
    publisher = {ACM},
    doi = {10.1145/2643230.2643240},
   }
   
   

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