异构无线网络中网络接入选择策略的研究
|
摘要
随着多种无线接入技术的并行同步发展,下一代无线通信系统将朝着多种无线接入技术并存、互补的异构无线融合网络方向演进。异构无线网络给人们带来的不仅是技术的革新,还将深刻影响无线业务的发展,为用户带来全新的用户体验,将最终实现“任何时间、任何地点都能与任何人进行任何种类的信息交互”。
同时,由于异构无线网络在系统的多个层面,如控制层面、接入层面、空中接口层面等,将与传统通信系统大为不同,对网络的可靠性、稳定性和高效性提出了极大的挑战。其中,接入层面中的网络选择与控制层面的联合呼叫接纳控制是本文研究对象,本文将通过研究网络选择算法,找出最适合当前用户所使用业务的无线网络；通过研究联合呼叫接纳控制算法,降低某个网络的新呼叫阻塞率、切换掉话率与整个网络的新呼叫拒绝率,达到优化无线资源的目的。
本文的研究内容共分三个方面。首选,考虑到网络选择的选择结果应是由主观因素和客观因素,即用户喜好和网络客观属性,两者综合得出,分别对用户喜好方面采用层次分析法,对网络客观状况采用理想值近似排序法,并提出了一种用户喜好与网络状况协同决策的网络选择算法。其次,考虑到无线信道的时变特征,提出了一种基于多维标度的动态网络选择算法。该算法利用一个N维向量代表一个网络,每个网络质量属性代表一个维度。将多属性判决的网络选择问题近似转化一个低维的拟合构图,能直观地反映不同时刻同个网络的变化与不同网络间的各自特征。最后,通过搭建由三个接入网络组成的异构无线网络,分别对划分的区域进行研究,运用联合呼叫接纳控制算法分析在有重叠覆盖时的新呼叫实际拒绝率与单个接入网络的新呼叫阻塞率之间的关系,并分析最优保护信道策略与固定保护信道策略在不同的呼叫到达率时对系统无线资源利用的优劣性。
With a variety of wireless access technology parallel synchronous development, the next generation of wireless communication system will evolve along the heterogeneous wireless network, which is in a variety of wireless access technology coexist and complement each other. Heterogeneous wireless network bring people is not only the innovation of technology, also will deeply affect the wireless business development, bring users the brand-new user experience, will ultimately lead to "any time, any place with anyone can make any kinds of information interaction".
At the same time, because of the different between the heterogeneous wireless network system's multiple levels and traditional communication system, such as the control level, access level, air interface aspects, it is a huge challenge at the reliability, the stability and efficiency. Among them, the network selection in access level and the joint call admission control in control aspects are this paper the research objects, this article will identify the most suitable wireless network for the current user use business by researching the network selection algorithm; and by using the research joint call admission control algorithm, reduce the new call blocking probability and handoff call dropping probability of a network, and the actual new call rejection rate of the whole network, to achieve the purpose of optimizing wireless resources.
The research content of this paper consists of three aspects. First, consider the result of network selection should be comprehensive concluded by subjective factors and objective factors, namely the user preferences and network objective attributes, respectively, use the analytic hierarchy process for user preferences, use the TOPSIS for the network objective condition, and puts forward a kind of user preferences and network status collaborative judgment network selection algorithm. Second, considering the time varying characteristics of wireless channel, a method based on multidimensional scaling of the novel dynamic network selection algorithm is presented. The algorithm uses one N dimensions vector represents a network, each network quality attributes represent a dimension. It can approximately transform the multiple attribute decision network selection problems into a low dimensional fitting composition, which will reflect changes of different moments on a network and each characteristic of the different network. Finally, through the building the heterogeneous wireless network composed by three access network, Respectively research the already divided in the area, using joint call admission control algorithm analyses the relationship for between the new call actual rejection probability in overlapping coverage and the new call blocking probability in a single access network, and analyses the advantages and disadvantages for system wireless resources utilization between the optimal guard channel strategy and fixed guard channel strategy at different call arrival rate
同时,由于异构无线网络在系统的多个层面,如控制层面、接入层面、空中接口层面等,将与传统通信系统大为不同,对网络的可靠性、稳定性和高效性提出了极大的挑战。其中,接入层面中的网络选择与控制层面的联合呼叫接纳控制是本文研究对象,本文将通过研究网络选择算法,找出最适合当前用户所使用业务的无线网络；通过研究联合呼叫接纳控制算法,降低某个网络的新呼叫阻塞率、切换掉话率与整个网络的新呼叫拒绝率,达到优化无线资源的目的。
本文的研究内容共分三个方面。首选,考虑到网络选择的选择结果应是由主观因素和客观因素,即用户喜好和网络客观属性,两者综合得出,分别对用户喜好方面采用层次分析法,对网络客观状况采用理想值近似排序法,并提出了一种用户喜好与网络状况协同决策的网络选择算法。其次,考虑到无线信道的时变特征,提出了一种基于多维标度的动态网络选择算法。该算法利用一个N维向量代表一个网络,每个网络质量属性代表一个维度。将多属性判决的网络选择问题近似转化一个低维的拟合构图,能直观地反映不同时刻同个网络的变化与不同网络间的各自特征。最后,通过搭建由三个接入网络组成的异构无线网络,分别对划分的区域进行研究,运用联合呼叫接纳控制算法分析在有重叠覆盖时的新呼叫实际拒绝率与单个接入网络的新呼叫阻塞率之间的关系,并分析最优保护信道策略与固定保护信道策略在不同的呼叫到达率时对系统无线资源利用的优劣性。
With a variety of wireless access technology parallel synchronous development, the next generation of wireless communication system will evolve along the heterogeneous wireless network, which is in a variety of wireless access technology coexist and complement each other. Heterogeneous wireless network bring people is not only the innovation of technology, also will deeply affect the wireless business development, bring users the brand-new user experience, will ultimately lead to "any time, any place with anyone can make any kinds of information interaction".
At the same time, because of the different between the heterogeneous wireless network system's multiple levels and traditional communication system, such as the control level, access level, air interface aspects, it is a huge challenge at the reliability, the stability and efficiency. Among them, the network selection in access level and the joint call admission control in control aspects are this paper the research objects, this article will identify the most suitable wireless network for the current user use business by researching the network selection algorithm; and by using the research joint call admission control algorithm, reduce the new call blocking probability and handoff call dropping probability of a network, and the actual new call rejection rate of the whole network, to achieve the purpose of optimizing wireless resources.
The research content of this paper consists of three aspects. First, consider the result of network selection should be comprehensive concluded by subjective factors and objective factors, namely the user preferences and network objective attributes, respectively, use the analytic hierarchy process for user preferences, use the TOPSIS for the network objective condition, and puts forward a kind of user preferences and network status collaborative judgment network selection algorithm. Second, considering the time varying characteristics of wireless channel, a method based on multidimensional scaling of the novel dynamic network selection algorithm is presented. The algorithm uses one N dimensions vector represents a network, each network quality attributes represent a dimension. It can approximately transform the multiple attribute decision network selection problems into a low dimensional fitting composition, which will reflect changes of different moments on a network and each characteristic of the different network. Finally, through the building the heterogeneous wireless network composed by three access network, Respectively research the already divided in the area, using joint call admission control algorithm analyses the relationship for between the new call actual rejection probability in overlapping coverage and the new call blocking probability in a single access network, and analyses the advantages and disadvantages for system wireless resources utilization between the optimal guard channel strategy and fixed guard channel strategy at different call arrival rate
引文
[1]胡海波.无线异构网络发展综述[J].现代电信科技,2009：19-22,30
[2]李军.异构无线网络融合理论与技术实现[M].电子工业出版社,2009.
[3]雷震洲.欧盟IST计划中的无线通信研究趋势[J].中国无线电管理,2003(2)：10-14
[4]N.Niebert, M.prytz, A.Schieder, et. Ambient networks:a framework for future wireless internetworking[C]. IEEE VTC 2005. Stockholm:[S n],2005:2969-2973.
[5]R.Tonjes, P.Benko, J.Ebenhard, et. Architecture for future generation multi-access wireless system with dynamic spectrum allocation[C]. In Mobile Summit' 2000. Galway, Ireland:[sn],2000.
[6]Einsiedler H, Aguiar RL, Jonas K, et. The Moby dick project:A mobile heterogeneous All-IP architecture[C]. ATAMS 2001
[7]IST EVEREST Project. Final report on the evaluation of RRM/CRRM algorithms. IST-2002-001858D20, Oct 2005.
[8]Gazis V, Alonistioti N, Merakos L. Toward a generic "always best connected" capability in integrated WLAN/UMTS cellular mobile networks (and beyond) [J]. Wireless Communications,2005,12(3):20-29.
[9]信息产业部技术报告.TD-SCDMA&WiMAX技术融合的带宽无线移动通信系统的研究.2005.12
[10]罗强,张平,刘韦辰.可重配置无线网络中联合无线资源管理研究[J].电信科学,2008(6)：64-70.
[11]罗强,张平.B3G网络联合无线资源管理的研究[J].电信科学,2006(6)：43-47.
[12]FODOR G, FUNUSKAR A, LUNDSJO J. On access selection techniques in always best connected networks[C]. ITCS'04, Antwerp, Belgium,2004.
[13]V.A.de Sousa, R.A.deO. Nero, E.de.S. Chaves, et. Access selection with anticipatory vertical handover for multi-access networks[J]. In Proceedings of IEEE PIMRC'2006,pages 1-5, Sept 2006.
[14]liang Xie. Mobility Management in Next Generation All-IP Based Wirless System[J]. Georgia Institute of Technology, April 2002.
[15]M. Dillinger, K. Madani, N. Alonistinti. Software Defined Radio: Architectures[J]. Systems and Functions, july 2003
[16]Suk Yu Hui, Kai Hau Yeung. Challenges in the migration to 4G mobile systems[J]. IEEE Communications Magazine,41(12):54-59,2003.
[17]许树柏.层次分析法原理[M].天津：天津大学出版社,1988：1-76.
[18]乔永辉.一种基于TOPSIS的多属性决策方法研究[J].企业技术开发,2006,25(9)：89-91
[19]刘普寅,吴孟达.模糊理论及其应用[M].北京：国防科技大学出版社,2011.
[20]刘思峰,郭天榜,党耀国.灰色系统理论及其应用[M].北京：科学出版社,1999.
[21]高雨,曾华燊.一种面向业务类别的区分权值异质无线网络选择算法[J].计算机应用,2010(5)：1141-1144,1148.
[22]Hao Hu, Wenan Zhou, Shu Zhang, Junde Song. A Novel Network Selection Algorithm in Next Generation Heterogeneous Network for Modern Service Industry[C]. Asia-Pacific Services Computing Conference.2008,1263-1269.
[23]孙雷,田辉,沈东明,张平.基于Hilbert空间向量范数的网络选择算法[J].北京邮电大学学报,2009,32(4)：54-58.
[24]FAROOQ BARI, VICTOR C.M. LEUNG. Automated network selection in a heterogeneous wireless network environment [J]. Network, IEEE,2007,21(1),34-40.
[25]SGORA AGGELIKI, VERGADOS DIMITRIO, CHATZIMISIOS PERIKLIS. An access network selection algorithm for heterogeneous wireless environments [J]. (ISCC), IEEE Symposium on,2010,890-892,22-25.
[26]X. Gelabert, J. Pe'rez-Romero, O. Salient, and R. Agusti. A Markovian Approach to Radio Access Technology Selection in Heterogeneous Multi-access/Multiservice Wireless Networks[J]. IEEE Transactions on Mobile Computing,2008.
[27]谷晨,宋梅,张勇,刘杰平.通用多接入网络选择问题的建模和分析[J].北京邮电大学学报,2009,32(4)：128-132.
[28]Se-Hyma Oh, Dong-Wan Tcha. Prioritized channel assignment in a cellular radio network[J]. IEEE trans. On Communication.40(7):1259-1269,July 1992.
[29]彭木根,王文博.3G无线资源管理与网络规划优化[M].北京：人民邮电出版社,2006.
[30]W. B. Gong, Z. M. Gan. Optimal reservation guard channel in wireless system [J]. Journal of Applied Sciences,21(4):427-439, Dec 2003.
[31]R. Ramjee, R. Nagarajan, D. Towsley. On optimal call admission control in cellular networks[C]. In Proceedings of IEEE INFOCOM'1996,43-50, Mar 1996.
[32]A. Furuskar, J. Zander. Multiservice allocation for multi-access wireless systems[J]. IEEE Transactions on Wireless Communications 4 (Jan.) 2005,174-184.
[33]LUSHEN WAN, BINRT.D. MADM-based network selection in heterogeneous wireless networks:A simulation study [J]. Wireless Communication,2009,559-564,17-20.
[34]O. E. Falowo and H. A. Chan. Joint Call Admission Control Algorithm for Fair Radio Resource Allocation in Heterogeneous Wireless Networks Supporting Heterogeneous Mobile Terminals[R]. (CCNC), Las Vegas, USA,2010,9-12.
[35]D. Niyato, E. Hossain. Call admission control for QoS provisioning in 4G wireless networks:issues and approaches [J]. IEEE Network,19(5):5-11, Oct 2005.
[36]LUSHEN WAN, BINRT.D.MADM-based network selection in heterogeneous wireless networks:A simulation study [J].Wireless Communication,2009,559-564,17-20.
[37]Bojan Bakmaz, Zoran Bojkovic, Miodrag Bakmaz. Network Selection Algorithm for Heterogeneous Wireless Environment [J].Personal, Indoor and Mobile Radio Communications, IEEE,2007,1-4,3-7.
[38]贺听李斌.异构无线网络切换技术[M].北京邮电大学出版社,2008：261-268.
[39]罗赞骞 夏靖波陈天平.网络性能评估中客观权重确定方法比较[J].计算机应用,2009(10)：2624-2626,2631.
[40]孙阳孙文生.基于业务类型的异构无线网络选择算法[J].中国电子科学研究院学报,2009,4(4)：337-341.
[41]QINGYANG SONG, ABBAS JAMALIPUR. Network selection in an integrated wireless LAN and UMTS environment using mathematical modeling and computing techniques [J].Wireless Communications, IEEE,2005,12(3):42-48.
[42]K W Cheng, H C So. A multidimensional scaling framework for mobile location using time of arrival measurements [J]. IEEE Trans on signal Processing,2005,53(2):460-470
[43]陆忠华,胡永宏,沈斌,迟学斌.多维标度法(MDS)在构效关系分析中的应用[J].计算机与应用化学,2007,24(3),286-290
[44]SGORA A, VERGADOS D, CHATZIMISIOS P. An access network selection algorithm for heterogeneous wireless environments[C] Proceedings of the IEEE Symposium on Computers and Communications. Washington, DC:IEEE Computer Society,2010:890-892.
[45]BARI F, LEUNG V C M. Automated network selection in a heterogeneous wireless network environment[J]. IEEE Network,2007,21(1):34-40.
[46]李军,房雅丁,宋梅,等.异构网络中一种基于灰度关联的动态接入选择策略[J].北京邮电大学学报,2006(29)：174-177.
[47]Wei wei Jiang, Hong yan Cui.Qiang jun Van. A Novel Application-Oriented Dynamic Network Selection in an Integrated UMTS and WiMAX Environment [J].2008
[48]I Borg, P Groener. Modern Multidimensional Scaling:Theory and Applications [M]. New York:Springer-Verlag,1997
[49]朱建平.应用多元统计分析[M].北京.科学出版社.2011
[50]王亚楠.异构无线网络中网络选择与联合呼叫接纳控制的研究[D].北京：北京邮电大学,2010.
[51]Huiling Jia, Huaxiong Zhang, et. Seamless QoS-Aware Call Admission Control Policy in Heterogeneous Wireless Networks[J]. IEEE,2008:1-6
[52]邓强,陈山枝,胡博,时岩.异构无线网络中基于马尔可夫决策过程的区分业务接纳控制的研究[J].通信学报,2010,31(12)：27-36
[53]王伟,景志宏,陈鹏.异构无线系统中一种改进的呼叫准入方案[J].电讯技术,2010：72-75
[54]王亚楠,夏海轮,冯春.燕异构网络中多媒体业务的联合呼叫接纳控制[J].西安电子科技大学学报,2010,37(5)：953-959
[55]Yu F, Krishnamurthy V. Optimal joint session admission control in integrated WLAN and CDMA cellular networks with vertical handoff[J]. Transactions on Mobile Computing.2007,6(1):126-139
[56]Olabisi E. Falowo. Joint Call Admission Control Algorithm for Reducing Call Blocking/dropping Probability in Heterogeneous Wireless Networks Supporting Multihoming[J]. IEEE International Workshop on Management of Emerging Networks and Services,2010,611-615
[57]M. Buddhikot, G. Chandranmenon, S. Han, et. Integration of 802.Hand Third-Generation Wireless Data Networks[C]. IEEE INFOCOM. v01.1, Apr 2003: 503-512.
[58]罗伟.网络融合技术方案探讨[J].电信快报,2006(1)：1-3.
[59]Y. B, Lin, S. Mohan, A. Noerpel. Queuing priority channel assignment strategies for PCS handoff and initial access[J]. IEEE Trans. On Vehicular Technology, 43(3):704-712,Aug 1994.
[60]Olabisi E. Falowo, H. Anthony Chan. JOINT CALL ADMISSION CONTROL FOR NEXT GENERATION WIRELESS NETWORK[J]. IEEE CCECE/CCGEI, Ottawa, 1151-1154,2006
[61]Olabisi E. Falowo, H. Anthony Chan. Dynamic Threshold-Based Joint Call Admission Control Scheme for Muti-Server Heterogeneous Cellular Networks [C]. Proceedings of IEEE WICOM 2007, Shanghai:IEEE,2007:3724-3727.
[62]Bejaoui T,Mokdad L. Adaptive Hybrid Call Admission Control Policy for UMTS with Underlying Tunnel-WLANs Heterogeneous Networks [J]. Proceedings of IEEE International Conference on Communications. Dresden:IEEE,2009:1-5
[63]樊平毅.随机过程理论与应用[M].北京：清华大学出版社,2005
[2]李军.异构无线网络融合理论与技术实现[M].电子工业出版社,2009.
[3]雷震洲.欧盟IST计划中的无线通信研究趋势[J].中国无线电管理,2003(2)：10-14
[4]N.Niebert, M.prytz, A.Schieder, et. Ambient networks:a framework for future wireless internetworking[C]. IEEE VTC 2005. Stockholm:[S n],2005:2969-2973.
[5]R.Tonjes, P.Benko, J.Ebenhard, et. Architecture for future generation multi-access wireless system with dynamic spectrum allocation[C]. In Mobile Summit' 2000. Galway, Ireland:[sn],2000.
[6]Einsiedler H, Aguiar RL, Jonas K, et. The Moby dick project:A mobile heterogeneous All-IP architecture[C]. ATAMS 2001
[7]IST EVEREST Project. Final report on the evaluation of RRM/CRRM algorithms. IST-2002-001858D20, Oct 2005.
[8]Gazis V, Alonistioti N, Merakos L. Toward a generic "always best connected" capability in integrated WLAN/UMTS cellular mobile networks (and beyond) [J]. Wireless Communications,2005,12(3):20-29.
[9]信息产业部技术报告.TD-SCDMA&WiMAX技术融合的带宽无线移动通信系统的研究.2005.12
[10]罗强,张平,刘韦辰.可重配置无线网络中联合无线资源管理研究[J].电信科学,2008(6)：64-70.
[11]罗强,张平.B3G网络联合无线资源管理的研究[J].电信科学,2006(6)：43-47.
[12]FODOR G, FUNUSKAR A, LUNDSJO J. On access selection techniques in always best connected networks[C]. ITCS'04, Antwerp, Belgium,2004.
[13]V.A.de Sousa, R.A.deO. Nero, E.de.S. Chaves, et. Access selection with anticipatory vertical handover for multi-access networks[J]. In Proceedings of IEEE PIMRC'2006,pages 1-5, Sept 2006.
[14]liang Xie. Mobility Management in Next Generation All-IP Based Wirless System[J]. Georgia Institute of Technology, April 2002.
[15]M. Dillinger, K. Madani, N. Alonistinti. Software Defined Radio: Architectures[J]. Systems and Functions, july 2003
[16]Suk Yu Hui, Kai Hau Yeung. Challenges in the migration to 4G mobile systems[J]. IEEE Communications Magazine,41(12):54-59,2003.
[17]许树柏.层次分析法原理[M].天津：天津大学出版社,1988：1-76.
[18]乔永辉.一种基于TOPSIS的多属性决策方法研究[J].企业技术开发,2006,25(9)：89-91
[19]刘普寅,吴孟达.模糊理论及其应用[M].北京：国防科技大学出版社,2011.
[20]刘思峰,郭天榜,党耀国.灰色系统理论及其应用[M].北京：科学出版社,1999.
[21]高雨,曾华燊.一种面向业务类别的区分权值异质无线网络选择算法[J].计算机应用,2010(5)：1141-1144,1148.
[22]Hao Hu, Wenan Zhou, Shu Zhang, Junde Song. A Novel Network Selection Algorithm in Next Generation Heterogeneous Network for Modern Service Industry[C]. Asia-Pacific Services Computing Conference.2008,1263-1269.
[23]孙雷,田辉,沈东明,张平.基于Hilbert空间向量范数的网络选择算法[J].北京邮电大学学报,2009,32(4)：54-58.
[24]FAROOQ BARI, VICTOR C.M. LEUNG. Automated network selection in a heterogeneous wireless network environment [J]. Network, IEEE,2007,21(1),34-40.
[25]SGORA AGGELIKI, VERGADOS DIMITRIO, CHATZIMISIOS PERIKLIS. An access network selection algorithm for heterogeneous wireless environments [J]. (ISCC), IEEE Symposium on,2010,890-892,22-25.
[26]X. Gelabert, J. Pe'rez-Romero, O. Salient, and R. Agusti. A Markovian Approach to Radio Access Technology Selection in Heterogeneous Multi-access/Multiservice Wireless Networks[J]. IEEE Transactions on Mobile Computing,2008.
[27]谷晨,宋梅,张勇,刘杰平.通用多接入网络选择问题的建模和分析[J].北京邮电大学学报,2009,32(4)：128-132.
[28]Se-Hyma Oh, Dong-Wan Tcha. Prioritized channel assignment in a cellular radio network[J]. IEEE trans. On Communication.40(7):1259-1269,July 1992.
[29]彭木根,王文博.3G无线资源管理与网络规划优化[M].北京：人民邮电出版社,2006.
[30]W. B. Gong, Z. M. Gan. Optimal reservation guard channel in wireless system [J]. Journal of Applied Sciences,21(4):427-439, Dec 2003.
[31]R. Ramjee, R. Nagarajan, D. Towsley. On optimal call admission control in cellular networks[C]. In Proceedings of IEEE INFOCOM'1996,43-50, Mar 1996.
[32]A. Furuskar, J. Zander. Multiservice allocation for multi-access wireless systems[J]. IEEE Transactions on Wireless Communications 4 (Jan.) 2005,174-184.
[33]LUSHEN WAN, BINRT.D. MADM-based network selection in heterogeneous wireless networks:A simulation study [J]. Wireless Communication,2009,559-564,17-20.
[34]O. E. Falowo and H. A. Chan. Joint Call Admission Control Algorithm for Fair Radio Resource Allocation in Heterogeneous Wireless Networks Supporting Heterogeneous Mobile Terminals[R]. (CCNC), Las Vegas, USA,2010,9-12.
[35]D. Niyato, E. Hossain. Call admission control for QoS provisioning in 4G wireless networks:issues and approaches [J]. IEEE Network,19(5):5-11, Oct 2005.
[36]LUSHEN WAN, BINRT.D.MADM-based network selection in heterogeneous wireless networks:A simulation study [J].Wireless Communication,2009,559-564,17-20.
[37]Bojan Bakmaz, Zoran Bojkovic, Miodrag Bakmaz. Network Selection Algorithm for Heterogeneous Wireless Environment [J].Personal, Indoor and Mobile Radio Communications, IEEE,2007,1-4,3-7.
[38]贺听李斌.异构无线网络切换技术[M].北京邮电大学出版社,2008：261-268.
[39]罗赞骞 夏靖波陈天平.网络性能评估中客观权重确定方法比较[J].计算机应用,2009(10)：2624-2626,2631.
[40]孙阳孙文生.基于业务类型的异构无线网络选择算法[J].中国电子科学研究院学报,2009,4(4)：337-341.
[41]QINGYANG SONG, ABBAS JAMALIPUR. Network selection in an integrated wireless LAN and UMTS environment using mathematical modeling and computing techniques [J].Wireless Communications, IEEE,2005,12(3):42-48.
[42]K W Cheng, H C So. A multidimensional scaling framework for mobile location using time of arrival measurements [J]. IEEE Trans on signal Processing,2005,53(2):460-470
[43]陆忠华,胡永宏,沈斌,迟学斌.多维标度法(MDS)在构效关系分析中的应用[J].计算机与应用化学,2007,24(3),286-290
[44]SGORA A, VERGADOS D, CHATZIMISIOS P. An access network selection algorithm for heterogeneous wireless environments[C] Proceedings of the IEEE Symposium on Computers and Communications. Washington, DC:IEEE Computer Society,2010:890-892.
[45]BARI F, LEUNG V C M. Automated network selection in a heterogeneous wireless network environment[J]. IEEE Network,2007,21(1):34-40.
[46]李军,房雅丁,宋梅,等.异构网络中一种基于灰度关联的动态接入选择策略[J].北京邮电大学学报,2006(29)：174-177.
[47]Wei wei Jiang, Hong yan Cui.Qiang jun Van. A Novel Application-Oriented Dynamic Network Selection in an Integrated UMTS and WiMAX Environment [J].2008
[48]I Borg, P Groener. Modern Multidimensional Scaling:Theory and Applications [M]. New York:Springer-Verlag,1997
[49]朱建平.应用多元统计分析[M].北京.科学出版社.2011
[50]王亚楠.异构无线网络中网络选择与联合呼叫接纳控制的研究[D].北京：北京邮电大学,2010.
[51]Huiling Jia, Huaxiong Zhang, et. Seamless QoS-Aware Call Admission Control Policy in Heterogeneous Wireless Networks[J]. IEEE,2008:1-6
[52]邓强,陈山枝,胡博,时岩.异构无线网络中基于马尔可夫决策过程的区分业务接纳控制的研究[J].通信学报,2010,31(12)：27-36
[53]王伟,景志宏,陈鹏.异构无线系统中一种改进的呼叫准入方案[J].电讯技术,2010：72-75
[54]王亚楠,夏海轮,冯春.燕异构网络中多媒体业务的联合呼叫接纳控制[J].西安电子科技大学学报,2010,37(5)：953-959
[55]Yu F, Krishnamurthy V. Optimal joint session admission control in integrated WLAN and CDMA cellular networks with vertical handoff[J]. Transactions on Mobile Computing.2007,6(1):126-139
[56]Olabisi E. Falowo. Joint Call Admission Control Algorithm for Reducing Call Blocking/dropping Probability in Heterogeneous Wireless Networks Supporting Multihoming[J]. IEEE International Workshop on Management of Emerging Networks and Services,2010,611-615
[57]M. Buddhikot, G. Chandranmenon, S. Han, et. Integration of 802.Hand Third-Generation Wireless Data Networks[C]. IEEE INFOCOM. v01.1, Apr 2003: 503-512.
[58]罗伟.网络融合技术方案探讨[J].电信快报,2006(1)：1-3.
[59]Y. B, Lin, S. Mohan, A. Noerpel. Queuing priority channel assignment strategies for PCS handoff and initial access[J]. IEEE Trans. On Vehicular Technology, 43(3):704-712,Aug 1994.
[60]Olabisi E. Falowo, H. Anthony Chan. JOINT CALL ADMISSION CONTROL FOR NEXT GENERATION WIRELESS NETWORK[J]. IEEE CCECE/CCGEI, Ottawa, 1151-1154,2006
[61]Olabisi E. Falowo, H. Anthony Chan. Dynamic Threshold-Based Joint Call Admission Control Scheme for Muti-Server Heterogeneous Cellular Networks [C]. Proceedings of IEEE WICOM 2007, Shanghai:IEEE,2007:3724-3727.
[62]Bejaoui T,Mokdad L. Adaptive Hybrid Call Admission Control Policy for UMTS with Underlying Tunnel-WLANs Heterogeneous Networks [J]. Proceedings of IEEE International Conference on Communications. Dresden:IEEE,2009:1-5
[63]樊平毅.随机过程理论与应用[M].北京：清华大学出版社,2005