Protocolos Multibanda para Descoberta de Vizinhança em Redes Ad Hoc de Ondas Milimétricas
Abstract
Propagation at millimeter waves band, i.e. up from 30 GHz, is very susceptible to path loss attenuation, which can be mitigated using highly directional antennas. Hence, the usage of this band in ad hoc networks increases the complexity of neighbor discovery since the knowledge of neighbors' physical location becomes essential to proceed with communication. To face these challenges, multiband protocols have been proposed, which uses an omnidirectional control channel in a different band from millimeter waves data channel. Due to unstable characteristics of millimeter waves channel, the control channel is used to transmit information concerning neighbor discovery. The two protocols proposed in this work rely on this feature and aim to build a global knowledge about nodes' location as well as to maintain it in the case of nodes mobility or if some obstacle arises. Both protocols are compared with another protocol found in the literature in terms of delay on the neighbor discovery, decreasing the time for total discovery up to 75%.
References
Cardoso, K. V. and de Rezende, J. F. (2012). Increasing throughput in dense 802.11 networks by automatic rate adaptation improvement. Wireless Networks, 18(1):95– 112.
Korakis, T., Jakllari, G., and Tassiulas, L. (2008). Cdr-mac: A protocol for full exploitation of directional antennas in ad hoc wireless networks. IEEE Transactions on Mobile Computing, 7(2):145–155.
Ning, J., Kim, T.-S., Krishnamurthy, S. V., and Cordeiro, C. (2011). Directional neighbor discovery in 60 ghz indoor wireless networks. Performance Evaluation, 68(9):897– 915.
Nitsche, T., Cordeiro, C., Flores, A. B., Knightly, E. W., Perahia, E., and Widmer, J. C. Ieee 802.11 ad: directional 60 ghz communication for multi-gigabit-per(2014). second wi-. IEEE Communications Magazine, 52(12):132–141.
Niu, Y., Li, Y., Jin, D., Su, L., and Vasilakos, A. V. (2015). A survey of millimeter wave communications (mmwave) for 5g: opportunities and challenges. Wireless Networks, 21(8):2657–2676.
Olivier, A., Bielsa, G., Tejado, I., Zorzi, M., Widmer, J., and Casari, P. (2016). Lightweight indoor localization for 60-ghz millimeter wave systems. In Sensing, Communication, and Networking (SECON), 2016 13th Annual IEEE International Conference on, pages 1–9. IEEE.
Palacios, J., Casari, P., and Widmer, J. (2017). Jade: Zero-knowledge device localization In INFOCOM 2017-IEEE and environment mapping for millimeter wave systems. Conference on Computer Communications, IEEE, pages 1–9. IEEE.
Park, H., Kim, Y., Song, T., and Pack, S. (2015). Multiband directional neighbor discovery in self-organized mmwave ad hoc networks. IEEE Transactions on Vehicular Technology, 64(3):1143–1155.
Sakamoto, H. (1943). On the distributions of the product and the quotient of the independent and uniformly distributed random variables. Tohoku Mathematical Journal, First Series, 49:243–260.
Sim, G. H., Nitsche, T., and Widmer, J. C. (2016). Addressing mac layer inefciency and deafness of ieee802. 11ad millimeter wave networks using a multi-band approach. In Personal, Indoor, and Mobile Radio Communications (PIMRC), 2016 IEEE 27th Annual International Symposium on, pages 1–6. IEEE.
Vasudevan, S., Kurose, J., and Towsley, D. (2004). On neighbor discovery in wireless networks with directional antennas.
