基于SDWN的负载感知终端多点关联方案研究
|
摘要
软件定义无线网络(SDWN)是一种控制与转发分离的无线网络架构。该架构可以快速获取全局拓扑,并且其可编程性结合资源虚拟化技术可以对网络接入进行动态控制。针对现有WLAN网络接入负载不均衡问题以及移动终端与AP硬关联导致的切换速度较慢的问题,基于SDWN架构提出了一种负载感知终端多点关联方案。该方案对SDWN网络架构下的终端接入算法进行改进,采用多点关联技术,即终端在感知AP负载数据后,可关联多个虚拟AP,达到动态分流并提高网络吞吐量的目的。最后在SDWN的开源Odin平台上验证了方案的可行性。实验表明,相比无缝切换至另一AP,此方案可改变原有终端与AP接入一一对应的接入关系,根据AP负载动态接入能有效提升网络吞吐量。
Software defined wireless network(SDWN) is a wireless network architecture that separates control plane and forward plane. It can get global topology quickly and its programmable combined with resource virtualization technology can control network access dynamically. In order to solve the problem of unbalanced load in existing WLAN and handover problem caused by the hard association between mobile terminal and AP,this paper proposed a terminal multi-point association scheme based on load-aware in SDWN. This scheme improved the seamless handoff algorithm between AP based on traffic load perception. When sensing AP load,the terminal could connect multiple virtual APs to achieve dynamic diversion. Finally,it verified this scheme on an experimental platform. Experiments show that this scheme changes the relationship between the terminal and the AP one by one compared to seamlessly switching to another AP,and it effectively improves the terminal network throughput.
Software defined wireless network(SDWN) is a wireless network architecture that separates control plane and forward plane. It can get global topology quickly and its programmable combined with resource virtualization technology can control network access dynamically. In order to solve the problem of unbalanced load in existing WLAN and handover problem caused by the hard association between mobile terminal and AP,this paper proposed a terminal multi-point association scheme based on load-aware in SDWN. This scheme improved the seamless handoff algorithm between AP based on traffic load perception. When sensing AP load,the terminal could connect multiple virtual APs to achieve dynamic diversion. Finally,it verified this scheme on an experimental platform. Experiments show that this scheme changes the relationship between the terminal and the AP one by one compared to seamlessly switching to another AP,and it effectively improves the terminal network throughput.
引文
[1] Open Network Foundation(ONF). Software defined networking:the new norm for networks[EB/OL].(2012-04-20)[2015-02-12].https://www. opennetworking. org/images/stories/downloads/sdnresources/white-papers/wp-sdn-newnorm. pdf.
[2] Han Yunong,Yang Kun. An adaptive mobility manager for softwaredefined enterprise WLANs[C]//Proc of the 8th International Conference on Ubiquitous and Future Networks. Piscataway,NJ:IEEE Press,2016:888-893.
[3] Rangisetti A K,Baldaniya H B,Pradeep K B,et al. Load-aware hand-offs in software defined wireless LANs[C]//Proc of the 10th IEEE International Conference on Wireless and Mobile Computing,Networking and Communications. Piscataway, NJ:IEEE Press,2014:685-690.
[4] Yen L H,Yeh T T. SNMP-based approach to load distribution in IEEE 802. 11 networks[C]//Proc of the 63rd IEEE Vehicular Technology Conference. Piscataway,NJ:IEEE Press,2006:1196-1200.
[5]李云,周亚峰,曹傧.基于软件定义网络的WLAN架构及负载均衡切换[J].重庆邮电大学学报:社会科学版,2016,28(5):614-619.(Li Yun,Zhou Yafeng,Cao Bin. Wireless LAN and load balance strategy based on software defined network structure[J].Journal of Chongqing University of Posts and Telecommunications:Social Science Edition,2016,28(5):614-619.)
[6]候喆.基于软件定义网络的无线网络移交技术研究[D].北京:北京邮电大学,2015.(Hou Zhe. Research on wireless network handover technology based on software definition network[D]. Beijing:Beijing University of Posts and Telecommunications,2015.)
[7]李晓,杨建喜,池亚萍,等. SDWN下基于流量负载感知的AP间无缝切换算法研究[J].计算机应用研究,2018,35(10):3037-3040,3047.(Li Xiao,Yang Jianxi,Chi Yaping,et al. Seamless handoff algorithm between AP based on traffic load perception in software defined wireless network[J]. Application Research of Computers,2018,35(10):3037-3040,3047.)
[8] Suresh L,Schulz Z J,Merz R,et al. Towards programable enterprise WLANS with Odin[C]//Proc of the 1st Workshop on Hot Topics in Software Defined Networks. New York:ACM Press,2012:115-120.
[9] Berezin M E,Rousseau F,Duda A. Multichannel virtual access points for seamless handoffs in IEEE 802. 11 wireless networks[C]//Proc of the 73rd Vehicular Technology Conference. Piscataway,NJ:IEEE Press,2011:1-5.
[10]Chandra R,Bahl P,Bahl V. MultiNet:connecting to multiple IEEE802. 11 networks using a single wireless card[C]//Proc of the 23rd Annual Joint Conference of the IEEE Computer and Communications Societies. Piscataway,NJ:IEEE Press,2004:882-893.
[11]Ahn S W,Yoo C. Network interface virtualization in wireless communication for multi-streaming service[C]//Proc of the 15th IEEE International Symposium on Consumer Electronics. Piscataway, NJ:IEEE Press,2011:67-70.
[12]Kohler E,Morris R. The click modular router[J]. ACM Trans on Computer Systems,2000,18(3):263-297.
[13]Adrian L,Anisha K,Byrav R. Network innovation using Open Flow:a survey[J]. IEEE Communications Surveys&Tutorials,2014,16(1):493-512.
[2] Han Yunong,Yang Kun. An adaptive mobility manager for softwaredefined enterprise WLANs[C]//Proc of the 8th International Conference on Ubiquitous and Future Networks. Piscataway,NJ:IEEE Press,2016:888-893.
[3] Rangisetti A K,Baldaniya H B,Pradeep K B,et al. Load-aware hand-offs in software defined wireless LANs[C]//Proc of the 10th IEEE International Conference on Wireless and Mobile Computing,Networking and Communications. Piscataway, NJ:IEEE Press,2014:685-690.
[4] Yen L H,Yeh T T. SNMP-based approach to load distribution in IEEE 802. 11 networks[C]//Proc of the 63rd IEEE Vehicular Technology Conference. Piscataway,NJ:IEEE Press,2006:1196-1200.
[5]李云,周亚峰,曹傧.基于软件定义网络的WLAN架构及负载均衡切换[J].重庆邮电大学学报:社会科学版,2016,28(5):614-619.(Li Yun,Zhou Yafeng,Cao Bin. Wireless LAN and load balance strategy based on software defined network structure[J].Journal of Chongqing University of Posts and Telecommunications:Social Science Edition,2016,28(5):614-619.)
[6]候喆.基于软件定义网络的无线网络移交技术研究[D].北京:北京邮电大学,2015.(Hou Zhe. Research on wireless network handover technology based on software definition network[D]. Beijing:Beijing University of Posts and Telecommunications,2015.)
[7]李晓,杨建喜,池亚萍,等. SDWN下基于流量负载感知的AP间无缝切换算法研究[J].计算机应用研究,2018,35(10):3037-3040,3047.(Li Xiao,Yang Jianxi,Chi Yaping,et al. Seamless handoff algorithm between AP based on traffic load perception in software defined wireless network[J]. Application Research of Computers,2018,35(10):3037-3040,3047.)
[8] Suresh L,Schulz Z J,Merz R,et al. Towards programable enterprise WLANS with Odin[C]//Proc of the 1st Workshop on Hot Topics in Software Defined Networks. New York:ACM Press,2012:115-120.
[9] Berezin M E,Rousseau F,Duda A. Multichannel virtual access points for seamless handoffs in IEEE 802. 11 wireless networks[C]//Proc of the 73rd Vehicular Technology Conference. Piscataway,NJ:IEEE Press,2011:1-5.
[10]Chandra R,Bahl P,Bahl V. MultiNet:connecting to multiple IEEE802. 11 networks using a single wireless card[C]//Proc of the 23rd Annual Joint Conference of the IEEE Computer and Communications Societies. Piscataway,NJ:IEEE Press,2004:882-893.
[11]Ahn S W,Yoo C. Network interface virtualization in wireless communication for multi-streaming service[C]//Proc of the 15th IEEE International Symposium on Consumer Electronics. Piscataway, NJ:IEEE Press,2011:67-70.
[12]Kohler E,Morris R. The click modular router[J]. ACM Trans on Computer Systems,2000,18(3):263-297.
[13]Adrian L,Anisha K,Byrav R. Network innovation using Open Flow:a survey[J]. IEEE Communications Surveys&Tutorials,2014,16(1):493-512.