cognitive radio

Slide 1

:

: : 1389-1388

1

Shared Spectrum MAC ||| |#/46Wireless Communication Lab. (WCL)Sharif U. of Tech.

MAC ||| |#/46Wireless Communication Lab. (WCL)Sharif U. of Tech.

MAC ||| |#/46Wireless Communication Lab. (WCL)Sharif U. of Tech.

MAC ||| |[1]#/46Wireless Communication Lab. (WCL)Sharif U. of Tech.6

Advanced Networking

Destination Cluster Automated Interoperability#/46Wireless Communication Lab. (WCL)Sharif U. of Tech. . --- IEEE 802.22 6 [4]. : MAC ||| |7/46Wireless Communication Lab. (WCL)Sharif U. of Tech. . . demodulate . . MAC ||| |8/46Wireless Communication Lab. (WCL)Sharif U. of Tech. P.U. cyclostationary . SNR . . . WSS . [8]. MAC ||| |9/46Wireless Communication Lab. (WCL)Sharif U. of Tech. [5]. [5] . Ts .

[6]

MAC ||| |10/46Wireless Communication Lab. (WCL)Sharif U. of Tech. AWGN

AWGN [7]. Pm Pfa . ROC MAC ||| |11/46Wireless Communication Lab. (WCL)Sharif U. of Tech.11

SU PU SU PU ( ) . ( ) [9][9][9] MAC ||| |12/46Wireless Communication Lab. (WCL)Sharif U. of Tech.12 OR AND K-out of-NProbabilistic Method H1 N [10]. H1 [10]. H1 K N [10]. if K=1 K-out of-N OR-ruleif K=N K-out of-N AND-rule MAC ||| |13/46Wireless Communication Lab. (WCL)Sharif U. of Tech.13

AND-rule, Pfa =10%, [10]OR-rule, Pfa =10%, [10] MAC ||| |14/46Wireless Communication Lab. (WCL)Sharif U. of Tech.14

:

Public Commons Model

Exclusive Usage Model

Private Commons Model

MAC Layer MAC ||| |15/46Wireless Communication Lab. (WCL)Sharif U. of Tech.

MAC Layer MAC ||| |16/46Wireless Communication Lab. (WCL)Sharif U. of Tech. :

: -Low Overhead

: -High OverheadMAC Layer MAC ||| |17/46Wireless Communication Lab. (WCL)Sharif U. of Tech. MAC

CR


Hidden Terminal

Exposed TerminalMAC Layer MAC ||| | 19/46Wireless Communication Lab. (WCL)Sharif U. of Tech. MAC MAC MAC MAC CRMAC Layer MAC ||| |20/46Wireless Communication Lab. (WCL)Sharif U. of Tech. :[16]

MAC Layer MAC ||| |21/46Wireless Communication Lab. (WCL)Sharif U. of Tech.2) MAC [17]



4) MAC Ad Hoc [19]

- FCCH

- SCH

- BCCH


RTS

RTS

RTS

CTS ID NAV

Selective ARQ


:

Collision


-Update

RTS -

FCT FCT -

Echo-CTS MAC Layer MAC ||| |27/46Wireless Communication Lab. (WCL)Sharif U. of Tech.6) MAC CR:[21]


MAC Underlay

MAC Layer MAC ||| |29/46Wireless Communication Lab. (WCL)Sharif U. of Tech. (CRN) . CRNs . GCRNs [3]. MAC ||| | CRN30/46Wireless Communication Lab. (WCL)Sharif U. of Tech.30 CRNs MANETs WSNs . MANET . MANET proactive reactive . proactive table-driven DSDVDSRAODV reactive on-demand MAC ||| |31/46Wireless Communication Lab. (WCL)Sharif U. of Tech. MANET CRN : CRNs CRN .

CRN ( ) .

CRN .

CRN interarrival time . uplink downlink .

. WSN CRNs . networking CRNs . MAC ||| |32/46Wireless Communication Lab. (WCL)Sharif U. of Tech. CRNs CRNs . CRNs . : re-configurability PU awareness MAC ||| |33/46Wireless Communication Lab. (WCL)Sharif U. of Tech. CRNs MAC ||| | . [15]. 1. ABC1|2|3|4|51|3|6|7|834/46Wireless Communication Lab. (WCL)Sharif U. of Tech. CRNs MAC ||| | MSCRP [11]. AODV RREQ forward

( ) .

spectrum switching channel contention . 1. 35/46Wireless Communication Lab. (WCL)Sharif U. of Tech. CRNs MAC ||| | MSCRP [11]. CR . . FPA . FPA [12]. 1. 36/46Wireless Communication Lab. (WCL)Sharif U. of Tech. CRNs MAC ||| | Re-Configurability 37/46Wireless Communication Lab. (WCL)Sharif U. of Tech. CRNs MAC ||| | Re-Configurability route setup route setup . route setup SPEAR [14]. 38/46Wireless Communication Lab. (WCL)Sharif U. of Tech. MAC ||| | [13]. CR . CRNs PU Awareness39/46Wireless Communication Lab. (WCL)Sharif U. of Tech. PU Awareness MAC ||| | CR - . . : 1( 2( CRNs MWRP [13]. 40/46Wireless Communication Lab. (WCL)Sharif U. of Tech. CRNs MSCRP [11]. FPA [12]. PU Awareness

CogNet [14]. MWRP [13]. Re-Configurability

SPEAR [14]. MAC ||| |41/46Wireless Communication Lab. (WCL)Sharif U. of Tech. . .

.

MAC .

. .

42/46Wireless Communication Lab. (WCL)Sharif U. of Tech.[1] I. F. Akyildiz, W. Y. Lee, M. C. Vuran, and S. Mohanty, Next generation/dynamic spectrum access/cognitive radio wireless networks: a survey, Computer Networks Journal, vol. 50, no. 13, pp. 21272159, 2006.

[2] I.F. Akyildiz, W.Y. Lee, K.R.Chowdhury, CRAHNs: Cognitive Radio Ad Hoc Networks, Ad Hoc Net. J., vol. 7, no. 5, July 2009.

[3] J. Mitola, Cognitive Radio Architecture Evolution, Proceedings of the IEEE, pp. 626641, April 2009.

[4] IEEE 802.22 Working Group, IEEE 802 LAN/MAN Standards on Wireless Regional Area Networks [Online]. Available: http://www.ieee802.org/22.

[5] H. Urkowitz, Energy detection of unknown deterministic signals, Proc. IEEE, vol. 55, pp. 523531, Apr. 1967.

[6] MK Baek, JY Kim, Effective Signal Detection using Cooperative Spectrum Sensing in Cognitive Radio Systems, Proceedings of the 11th international conference on Advanced Communication Technology, 2009.

[7] A. Ghasemi And E. Sousa, Collaborative Spectrum Sensing For Opportunistic Access In Fading Environments, In Proc. IEEE Int. Symposium on New Frontiers in Dynamic Spectrum Access Networks, Baltimore, Maryland, USA, Nov. 2005, pp. 131136

[8] M. Oner and F. Jondral, Cyclostationarity based air interface recognition for software radio systems, in Proc. IEEE Radio and Wireless Conf., Atlanta, Georgia, USA, Sept. 2004, pp. 263266.

[9] S. M. Mishra, Maximizing Available Spectrum For Cognitive Radios, PhD Thesis, University Of California At Berkeley , Jan. 2010

43/46Wireless Communication Lab. (WCL)Sharif U. of Tech.[10] M. K. Baek, J. Y. Kim, "Effective Signal Detection using Cooperative Spectrum Sensing in Cognitive Radio Systems", ICACT, 2009.

[11] H. Ma, L. Zheng, X. Ma, Y. Luo, "Spectrum Aware Routing For Multi-hop Cognitive Radio Networks With A Single Tranceiver", in: Proceeding of cognitive radio oriented wireless networks and communications (CrownCom), 2008.

[12] H. P. Shiang, M. Van der shaar, "Delay-sensitive Resource Management In Multi-hop Cognitive Radio Networks", in: Proceeding of IEEE DySPAN, 2008.

[13] C. W. Pyo, M. Hasegawa, "Minimum Weight Routing Basd On A Common Link Control Radio For Cognitive Wireless Ad Hoc Netwoks", Proceeding Of The International Conference On Wireless Communication And Mobile Computing (IWCMC), 2007.

[14] A. Sampath, L. Yang, L. Cao, H. Zheng, B. Y. Zhao, "High Throughput Spectrum Aware Routing For Cognitive Radio Based Ad Hoc Networks", In: Proceeding Of International Conference On Cognitive Radio Oriented Wireless Networks And Communications (CROWNCOM), 2009.

[15] Lei Ding, Tommaso Melodia, Stella N. Batalama, John D. Matyjas, and Michael J. Medley, "Cross-layer Routing and Dynamic Spectrum Allocation in Cognitive Radio Ad Hoc Networks", Ieee Transactions On Vehicular Technology, 2010. 44/46Wireless Communication Lab. (WCL)Sharif U. of Tech.[16] Q. Zhao, L. Tong, A. Swami, and Y. Chen, Decentralized Cognitive MAC for Opportunistic Spectrum Access in Ad Hoc Networks: A POMDP Framework, IEEE Journal on Selected Areas in Communications, vol. 25, no. 3, pp. 589600, April 2007.

[17] Q. Zhang, J. Jia, and X. Shen, Optimal Spectrum Sensing Decision for Hardware-Constrained Cognitive Network, Cognitive Wireless Communication Networks, Eds. E. Hossain and V.K. Bhargava, Springer 2007.

[18] H. Kim and K.G. Shin, Efficient Discovery of Spectrum Opportunities with MAC-Layer Sensing in Cognitive Radio Networks, IEEE Transactions on Mobile Computing, vol. 7, no. 5, pp. 533545, May 2008.

[19] P. Papadimitratos, S. Sankaranarayanan, and A. Mishra, A Bandwidth Sharing Approach to Improve Licensed Spectrum Utilization, IEEE Communications Magazine, vol. 43, no. 12, pp. 1014, Dec. 2005.

[20] T. Shu, S. Cui, and M. Krunz, Medium Access Control for Multi-Channel Parallel Transmission in Cognitive Radio Networks, in Proceedings IEEE Global Telecommunications Conference (GLOBECOM06), Nov. 2006.

[21]C. Doerr, M. Neufeld, J. Fifield, T. Weingart, D.C. Sicker, and D. Grunwald, MultiMAC: An Adaptive MAC Framework for Dynamic Radio Networking, in Proceedings of IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN05), pp. 548555, Nov. 2005.

45/46Wireless Communication Lab. (WCL)Sharif U. of Tech.46/22

Wireless Communication Lab. (WCL)Sharif U. of Tech. [6]

[7] [14]

47/25Wireless Communication Lab. (WCL)Sharif U. of Tech. N=1e3; SNR=-10 dB; Monter Carlo time=1e5;Simulation Parameter:

AWGN 48/25Wireless Communication Lab. (WCL)Sharif U. of Tech.49/25 MAC ||| |Spectrum Mobility

Spectrum mobility structure [2]Wireless Communication Lab. (WCL)Sharif U. of Tech.49

cognitive radio

Documents