A Rate-Adaptive MAC Protocol for Multi-Hop Wireless Networks Export

@inproceedings{2001holland_rbar, abstract = {Wireless local area networks (W-LANs) have become increasingly popular due to the recent availability of affordable devices that are capable of communicating at high data rates. These high rates are possible, in part, through new modulation schemes that are optimized for the channel conditions bringing about a dramatic increase in bandwidth efficiency. Since the choice of which modulation scheme to use depends on the current state of the transmission channel, newer wireless devices often support multiple modulation schemes, and hence multiple datarates, with mechanisms to switch between them Users are given the option to either select an operational datarate manually or to let the device automatically choose the appropriate modulation scheme (data rate) to match the prevailing conditions. Automatic rate selection protocols have been studied for cellular networks but there have been relatively few proposals for W-LANs. In this paper we present a rate adaptive MAC protocol called the Receiver-Based AutoRate (RBAR) protocol. The novelty of RBAR is that its rate adaptation mechanism is in the receiver instead of in the sender. This is in contrast to existing schemes in devices like the WaveLAN II [15]. We show that RBAR is better because it results in a more efficient channel quality estimation which is then reflected in a higher overall throughput Our protocol is based on the RTS/CTS mechanism and consequently it can be incorporated into many medium access control protocols including the widely popular IEEE 802.11 protocol. Simulation results of an implementation of RBAR inside IEEE 802.11 show that RBAR performs consistently well.}, address = {New York, NY, USA}, author = {Holland, Gavin and Vaidya, Nitin and Bahl, Paramvir}, booktitle = {MobiCom 2001, 7th Annual International Conference on Mobile Computing and Networking}, citeulike-article-id = {695076}, citeulike-linkout-0 = {http://portal.acm.org/citation.cfm?id=381677.381700}, citeulike-linkout-1 = {http://dx.doi.org/10.1145/381677.381700}, day = {16}, doi = {10.1145/381677.381700}, editor = {Naghshineh, Mahmoud and Zorzi, Michele}, isbn = {1-58113-422-3}, keywords = {80211, adaptation, cross-layer, mac, rbar, wireless}, location = {Rome, Italy}, month = {July}, organization = {ACM SIGMOBILE}, pages = {236--251}, posted-at = {2009-10-29 14:14:07}, priority = {0}, publisher = {ACM}, title = {A Rate-Adaptive {MAC} Protocol for Multi-Hop Wireless Networks}, url = {http://dx.doi.org/10.1145/381677.381700}, year = {2001} }

TY - CONF ID - 2001holland_rbar L3 - citeulike-article-id:695076 N2 - Wireless local area networks (W-LANs) have become increasingly popular due to the recent availability of affordable devices that are capable of communicating at high data rates. These high rates are possible, in part, through new modulation schemes that are optimized for the channel conditions bringing about a dramatic increase in bandwidth efficiency. Since the choice of which modulation scheme to use depends on the current state of the transmission channel, newer wireless devices often support multiple modulation schemes, and hence multiple datarates, with mechanisms to switch between them Users are given the option to either select an operational datarate manually or to let the device automatically choose the appropriate modulation scheme (data rate) to match the prevailing conditions. Automatic rate selection protocols have been studied for cellular networks but there have been relatively few proposals for W-LANs. In this paper we present a rate adaptive MAC protocol called the Receiver-Based AutoRate (RBAR) protocol. The novelty of RBAR is that its rate adaptation mechanism is in the receiver instead of in the sender. This is in contrast to existing schemes in devices like the WaveLAN II [15]. We show that RBAR is better because it results in a more efficient channel quality estimation which is then reflected in a higher overall throughput Our protocol is based on the RTS/CTS mechanism and consequently it can be incorporated into many medium access control protocols including the widely popular IEEE 802.11 protocol. Simulation results of an implementation of RBAR inside IEEE 802.11 show that RBAR performs consistently well. CY - Rome, Italy SN - 1-58113-422-3 OR - ACM SIGMOBILE AD - New York, NY, USA EP - 251 TI - A Rate-Adaptive {MAC} Protocol for Multi-Hop Wireless Networks PB - ACM T2 - MobiCom 2001, 7th Annual International Conference on Mobile Computing and Networking SP - 236 KW - 80211 KW - adaptation KW - cross-layer KW - mac KW - rbar KW - wireless AU - Holland, Gavin AU - Vaidya, Nitin AU - Bahl, Paramvir A2 - Naghshineh, Mahmoud A2 - Zorzi, Michele PY - 2001/07/16/ UR - http://dx.doi.org/10.1145/381677.381700 ER -