The predetermined target channel has high risk of being unavailable in the proactive-decision spectrum handoff. To solve this problem, an optimum target channel selection algorithm based on hybrid spectrum handoff is proposed. This algorithm coordinates the advantages of both the proactive-decision and reactive-decision spectrum handoffs. With the metric of minimizing the cumulative handoff delay, the impacts of secondary user’s multiple interruptions, primary user’s arrival rates and imperfect sensing on secondary user’s cumulative handoff delay are included and the detailed analysis and derivation of the secondary user’s cumulative handoff delay are conducted under imperfect sensing. Compared with proactive-decision and reactive-decision target channel selection schemes, the simulation results demonstrate that the performance of the proposed algorithm is especially excellent with frequent channel states variations or heavy traffic loads.
马彬,包小敏,谢显中. 认知无线网络中基于混合频谱切换的最优目标信道选择算法[J]. 电子与信息学报, 2017, 39(1): 31-37.
MA Bin, BAO Xiaomin, XIE Xianzhong. Optimal Target Channel Selection Algorithm Based on Hybrid Spectrum Handoffs in Cognitive Radio Networks. JEIT, 2017, 39(1): 31-37.
MA Bin and XIE Xianzhong. PSHO-HF-PM: an efficient proactive spectrum handover mechanism in cognitive radio networks[J]. Wireless Personal Communications, 2014, 79(3): 1-23.
[2]
PUSHP M and AWADHESH K S. A survey on spectrum handoff techniques in cognitive radio networks[C]. 2014 International Conference on Contemporary Computing and Informatics (IC3I), Mysore, 2014: 996-1001. doi: 10.1109/ IC3I.2014.7019755.
[3]
WANG Chungwei and WANG Lichun. Spectrum hando for cognitive radio networks: reactive-sensing or proactive- sensing?[C]. IEEE International Performance, Computing and Communications Conference, Austin, Texas, 2008: 343-348. doi: 10.1109/PCCC.2008.4745128.
[4]
WANG Chungwei, WANG Lichun, and CHANG Chungju. Modeling and analysis for spectrum handoffs in cognitive radio networks[J]. IEEE Transactions on Mobile Computing, 2012, 11(9): 1499-1513. doi: 10.1109/TMC.2011.155.
[5]
ZHANG Lei, SONG Tiecheng, and WU Ming. Traffic- adaptive proactive spectrum handoff strategy for graded secondary users in cognitive radio networks[J]. Chinese Journal of Electronics, 2015, 24(4): 1-8.
[6]
WANG Lichun and WANG Chungwei. Analysis of reactive spectrum handoff in cognitive radio networks[J]. IEEE Journal on Selected Areas in Communications, 2012, 30(10): 2016-2028. doi: 10.1109/JSAC.2012.121116.
[7]
ZHANG Y. Spectrum handoff in cognitive radio networks: opportunistic and negotiated situations[C]. IEEE International Conference on Communications, Dresden, 2009: 1-6. doi: 10.1109/ICC.2009.5199479.
[8]
ZHENG Shilian and YANG Xiaoniu. Target channel sequence selection scheme for proactive-decision spectrum handoff[J]. IEEE Communications Letters, 2011, 15(12): 1332-1334. doi: 10.1109/LCOMM.2011.102611.111603.
[9]
XIAO Qinghai, LI Yunzhou, ZHAO Ming, et al. Opportunistic channel selection approach under collision probability constraint in cognitive radio systems[J]. Computer Communications, 2009, 32(18): 1914-1922.
[10]
FATEMEH S and MASOUMEH N, Optimal probabilistic initial and target channel selection for spectrum handoff in cognitive radio networks[J]. IEEE Transactions on Wireless Communications, 2015, 14(1): 570-584. doi: 10.1109/TWC. 2014.2354407.
[11]
WANG Lichun, WANG Chungwei, and CHANG Chungju. Optimal target channel sequence design for multiple spectrum handoffs in cognitive radio networks[J]. IEEE Transactions on Communications, 2012, 60(9): 2444-2455. doi: 10.1109/TCOMM.2012.070912.100661.
[12]
WU Yeqing, HU Fei, SUNIL K, et al. A learning-based QoE-driven spectrum handoff scheme for multimedia transmissions over cognitive radio networks[J]. IEEE Journal on Selected Areas in Communications, 2014, 32(11): 2134-2148. doi: 10.1109/JSAC.2014.141115.
[13]
WANG Lichun, WANG Chungwei, and ADACHI Fumiyuki. Load-balancing spectrum decision for cognitive radio networks[J]. IEEE Journal on Selected Areas in Communications, 2011, 29(4): 757-769. doi: 10.1109/JSAC. 2011.110408.
[14]
LI Xiukui and SEYED A. Traffic pattern prediction and performance investigation for cognitive radio systems[C]. IEEE Wireless Communications and Networking Conference, Las Vegas, NV, 2008: 894-899. doi: 10.1109/WCNC.2008.163.
