应用于4G系统的动态优先级切换算法研究
摘要
当今,第三代移动通信已经逐渐商业化,对于下一代移动通信系统的研究也引起了广泛的关注。随着移动通信技术的发展,人们对于移动业务的需求日益增多,数据业务占据越来越重要的地位,视频通话、网络业务等都将成为未来的主要业务。未来的移动通信系统必须能够提供针对不同业务的服务质量(quality of service,QoS),所以对于下一代移动通信系统的无线资源管理技术的研究具有重要的意义。
切换过程在移动通信过程中是一个比较特殊的阶段,期间移动台需要完成从一个服务基站过渡到另一个服务基站的连接,切换算法的优劣直接影响着整个系统的性能。
在4G系统中,移动业务将会更加的多样化,切换需要适应不同的QoS需求。针对不同业务在切换中的特性不同,本文提出一种动态优先级排队(dynamic priority queue,DPQ)切换算法。
在DPQ切换算法中,创新性的为业务设置优先级函数,并且根据排队业务的等待时间动态调整优先级函数的大小,在接收端设置通用队列管理器对排队业务进行统一管理,充分考虑到了各种业务的QoS需求,防止优先级低的业务始终得不到服务。另外,将小区资源分等级预留,从而保证高优先级的业务的服务。仿真结果显示,DPQ切换算法在保证话音业务的情况下,使各种分组业务的阻塞率和掉话率得到了很大的改善。
The 3~(rd) generation (3G) mobile communications is coming into commercial applications, and the next generation (Beyond 3G and 4G) mobile communications is being researched extensively. With the development of mobile telecommunication technology and the increasing requirement for various digital services, digital services are more important in B3G and 4G systems. The next generation (Beyond 3G and 4G) mobile communications need to provide quality of service (QoS) for different traffics, so the research of radio resource management (RRM) for the next generation mobile communications is very important.
The handover is the special process in the mobile communicaton. During the handover process, the mobile station will connect the target base station instead of the original base station. So the handover scheme influences system performance directly.
Mobile service will be more various and handover have to adapt different quality-of-service (QoS) requirements of all kinds of service in 4G mobile communication systems. In the paper, a dynamic priority queue handover scheme is proposed. With the scheme, the innovative priority function is set and the common queue manager (CQM) is appended. The priority in the queue can be changed according to the variety of waiting delay. Furthermore, the resource is graded and reserved, which can insure the access of high priority service. The proposed handover scheme, which is adapted to different QoS requirements, can significantly improve the system performance, and reduce the drop rate and the block rate.
切换过程在移动通信过程中是一个比较特殊的阶段,期间移动台需要完成从一个服务基站过渡到另一个服务基站的连接,切换算法的优劣直接影响着整个系统的性能。
在4G系统中,移动业务将会更加的多样化,切换需要适应不同的QoS需求。针对不同业务在切换中的特性不同,本文提出一种动态优先级排队(dynamic priority queue,DPQ)切换算法。
在DPQ切换算法中,创新性的为业务设置优先级函数,并且根据排队业务的等待时间动态调整优先级函数的大小,在接收端设置通用队列管理器对排队业务进行统一管理,充分考虑到了各种业务的QoS需求,防止优先级低的业务始终得不到服务。另外,将小区资源分等级预留,从而保证高优先级的业务的服务。仿真结果显示,DPQ切换算法在保证话音业务的情况下,使各种分组业务的阻塞率和掉话率得到了很大的改善。
The 3~(rd) generation (3G) mobile communications is coming into commercial applications, and the next generation (Beyond 3G and 4G) mobile communications is being researched extensively. With the development of mobile telecommunication technology and the increasing requirement for various digital services, digital services are more important in B3G and 4G systems. The next generation (Beyond 3G and 4G) mobile communications need to provide quality of service (QoS) for different traffics, so the research of radio resource management (RRM) for the next generation mobile communications is very important.
The handover is the special process in the mobile communicaton. During the handover process, the mobile station will connect the target base station instead of the original base station. So the handover scheme influences system performance directly.
Mobile service will be more various and handover have to adapt different quality-of-service (QoS) requirements of all kinds of service in 4G mobile communication systems. In the paper, a dynamic priority queue handover scheme is proposed. With the scheme, the innovative priority function is set and the common queue manager (CQM) is appended. The priority in the queue can be changed according to the variety of waiting delay. Furthermore, the resource is graded and reserved, which can insure the access of high priority service. The proposed handover scheme, which is adapted to different QoS requirements, can significantly improve the system performance, and reduce the drop rate and the block rate.
引文
[1]G.L.Stuber.Principle of Mobile Communications.Kluwer Academic Publishers,2001.
[2]J.Chuang,N.Sollenberger.Beyond 3G:wideband wireless data access based on OFDM and dynamic packet assignment.IEEE Communication.Magazine,2000,38(7):78-87.
[3]胡捍英,杨峰义,第三代移动通信系统,人民邮电出版社,2001
[4]尤肖虎,曹淑敏,李建东,第三代移动通信系统发展现状与展望,电子学报,1999,27(11A):3-8.
[5]李世鹤编著,TD-SCDMA第三代移动通信系统标准,人民邮电出版社,2003
[6]Ping Zhang,Lihua Li.Research on Beyond 3G mobile communications.International Conference on ICCT2003,20 03(2):28-31.
[7]N.Natarajan.On systems beyond 3G:requirements and approaches.International Conference on ICCT2003.2003(2):1305-1309.
[8]Yungsoo Kim,Byung Jang Jeong,Jaehak Chung,etc.Beyond 3G:Vision,Requirements,and Enabling Technologies.IEEE Communication Magazine,2003:120-124.
[9]Hock-Beng Lim.Beyond 3G cellular communications.Potentials,IEEE,2002,2 1(4):18-23.
[10]Yu X H,Chen G A,Chen M,et al.The Future project in China Communications Magazine,IEEE,2005,43(1):70-75.
[11]Diaz E M,Noguet D,Rosson P,et al.4G scenarios and system requirements[EB/OL].http://ist strike,org/public/STRIKE - WP3 - LORA - DR - Int- 017 - 1 1.pdf,2003 04/2004 04.
[12]Guoqing Li and Hui Liu,On the Optimality of the OFDMA Network,IEEE 2005,Page(s):438-440
[13]Kanghee Kim,Hongku Kang and Kiseon Kim,Providing Quality of Service in Adaptive Resource Allocation for OFDMA Systems,IEEE 2004,Page(s):1612-1615
[14]Young-June Choi,Suho Park,and Saewoong Bahk,Multichannel Random Access in OFDMA Wireless Networks,IEEE 2006,Page(s):603-613
[15]Gautam Kulkarni,Sachin Adlakha and Mani Srivastava,Subcarrier Allocation and Bit Loading Algorithms for OFDMA-Based Wireless Networks,IEEE 2005,Page(s):652-662
[16]Luke T.H.Lee,Chung-Ju Chang,Yih-Shen Chen,and Scott Shen,A Utility-Approached Radio Resource Allocation Algorithm for Downlink in OFDMA Cellular Systems,IEEE 2005
[17]3GPP,"Radio Resource Control(RRC)",TS 25.331,June 2005
[18]孙立新,尤肖虎,张萍等,第三代移动通信技术,人民邮电出版社,2001
[19]吴违陵,牛凯,移动通信原理,电子工业出版社,2006
[20]王文博,郑侃,宽带无线通信OFDM技术,人民邮电出版社,2003
[21]Luke T.H.Lee,Chung-Ju Chang,Yih-Shen Chen,and Scott Shen,A Utility-Approached Radio Resource Allocation Algorithm for Downlink in OFDMA Cellular Systems,IEEE 2005
[22]X.Cai,S.Zhou,and G.B.Giannakis,Group-Orthogonal Multicarrier CDMA,IEEE 2004,Page(s):90-99
[23]James Gross,Hans-Florian Geerdes,Holger Karl and dam Wolisz,Performance Analysis of Dynamic OFDMA Systems With Inband Signaling,IEEE 2006,Page(s):427-436
[24]Jianfeng Qiang,Ping Zhang,An Efficient Multiple Access Scheme for Dynami Subband Allocation in OFDMA System,IEEE 2005,Page(s):1046-1049
[25]陈臣,马晓婷,刘乃安,OFDMA 无线宽带接入系统简介及性能仿真分析,电力系统通信,第26卷第148期,页42-44
[26]吴伟陵,牛凯,移动通信原理,电子工业出版社,2005
[27]V.Tarokh,N.Seshadri,A.Calderbank,“Space-time codes for high data rate wireless communication:Performance criterion and code construction”,IEEE Trans.Infor Theory,Vol.44,pp.744-765,March 1998.
[28]Siavash.M.Alamouti,“A simple transmit diversity technique for wireless communications”,IEEE Journal on Selected Areas in Communications,vol.16,pp.1451-1458,October 1998.
[29]Tarokh,V.;Jafarkhani,H.;“Space-time block codes from orthogonal designs”;Information Theory,IEEE Transactions on,Volume:45 Issue:5,July 1999 Page(s):1456-1467
[30]蒋亮,郭健,下一代网络移动IPv6技术,:机械工业出版社,2005
[31]王海洋,苗鹏峰,移动IP技术,移动通信,2005.8
[32]顾晓丹,徐子平,移动IP技术在超三代移动通信中的应用,信息技术与标准化,2006.4
[33]王卫东,高鹏,张英海,第3代移动通信系统设计原理与规划,电子工业出版社,2007
[34]王莹,张平编著,无线资源管理,北京邮电大学出版社,2005
[35]Diaz E M,Noguet D,Rosson P,et al.4G scenarios and system requirements[EB/OL].http://ist strike.org/public/STRIKE-WP3-LORA-DR-Int-017-11.pdf,2003 04/2004 04.
[36]LIN P,LIN Y B.Channel allocation for GPRS.IEEE Trans Vehicular Technology,2001,50(2):375-387.
[37]HUANG Q,CHAN S.An enhanced handoff control scheme for multimedia traffic in cellular networks[J].Communications Letters,IEEE,2004,8(3):195-197.
[38]LI W,CHEN H,AGRAWAL D P.Performance analysis of handoff schemes with preemptive and nonpreemptive channel borrowing in integrated wireless cellular networks[J].Wireless Communications,IEEE Transactions on,2005,4(3):1222-1233.
[39]SHANG Dan,NI Li,ZHANG Ping,A Dynamic Priority Reservation Queue Scheme for handover in Mobile Cellular Systems Supporting Multi-rate traffics.Personal,Indoor and Mobile Radio Communication Proceedings.The 14th IEEE Proceedings on Volume 2,7-10 Sept.2003Page:1461-1465
[40]李剑,胡波,多载波蜂窝移动通信系统中的多业务切换算法,通信学报,2007,第28卷,第3期
[41]陈静,曹达仲,侯春萍,业务环境下切换优先算法的改进,铁道学报,2003,第25卷,第4期
[2]J.Chuang,N.Sollenberger.Beyond 3G:wideband wireless data access based on OFDM and dynamic packet assignment.IEEE Communication.Magazine,2000,38(7):78-87.
[3]胡捍英,杨峰义,第三代移动通信系统,人民邮电出版社,2001
[4]尤肖虎,曹淑敏,李建东,第三代移动通信系统发展现状与展望,电子学报,1999,27(11A):3-8.
[5]李世鹤编著,TD-SCDMA第三代移动通信系统标准,人民邮电出版社,2003
[6]Ping Zhang,Lihua Li.Research on Beyond 3G mobile communications.International Conference on ICCT2003,20 03(2):28-31.
[7]N.Natarajan.On systems beyond 3G:requirements and approaches.International Conference on ICCT2003.2003(2):1305-1309.
[8]Yungsoo Kim,Byung Jang Jeong,Jaehak Chung,etc.Beyond 3G:Vision,Requirements,and Enabling Technologies.IEEE Communication Magazine,2003:120-124.
[9]Hock-Beng Lim.Beyond 3G cellular communications.Potentials,IEEE,2002,2 1(4):18-23.
[10]Yu X H,Chen G A,Chen M,et al.The Future project in China Communications Magazine,IEEE,2005,43(1):70-75.
[11]Diaz E M,Noguet D,Rosson P,et al.4G scenarios and system requirements[EB/OL].http://ist strike,org/public/STRIKE - WP3 - LORA - DR - Int- 017 - 1 1.pdf,2003 04/2004 04.
[12]Guoqing Li and Hui Liu,On the Optimality of the OFDMA Network,IEEE 2005,Page(s):438-440
[13]Kanghee Kim,Hongku Kang and Kiseon Kim,Providing Quality of Service in Adaptive Resource Allocation for OFDMA Systems,IEEE 2004,Page(s):1612-1615
[14]Young-June Choi,Suho Park,and Saewoong Bahk,Multichannel Random Access in OFDMA Wireless Networks,IEEE 2006,Page(s):603-613
[15]Gautam Kulkarni,Sachin Adlakha and Mani Srivastava,Subcarrier Allocation and Bit Loading Algorithms for OFDMA-Based Wireless Networks,IEEE 2005,Page(s):652-662
[16]Luke T.H.Lee,Chung-Ju Chang,Yih-Shen Chen,and Scott Shen,A Utility-Approached Radio Resource Allocation Algorithm for Downlink in OFDMA Cellular Systems,IEEE 2005
[17]3GPP,"Radio Resource Control(RRC)",TS 25.331,June 2005
[18]孙立新,尤肖虎,张萍等,第三代移动通信技术,人民邮电出版社,2001
[19]吴违陵,牛凯,移动通信原理,电子工业出版社,2006
[20]王文博,郑侃,宽带无线通信OFDM技术,人民邮电出版社,2003
[21]Luke T.H.Lee,Chung-Ju Chang,Yih-Shen Chen,and Scott Shen,A Utility-Approached Radio Resource Allocation Algorithm for Downlink in OFDMA Cellular Systems,IEEE 2005
[22]X.Cai,S.Zhou,and G.B.Giannakis,Group-Orthogonal Multicarrier CDMA,IEEE 2004,Page(s):90-99
[23]James Gross,Hans-Florian Geerdes,Holger Karl and dam Wolisz,Performance Analysis of Dynamic OFDMA Systems With Inband Signaling,IEEE 2006,Page(s):427-436
[24]Jianfeng Qiang,Ping Zhang,An Efficient Multiple Access Scheme for Dynami Subband Allocation in OFDMA System,IEEE 2005,Page(s):1046-1049
[25]陈臣,马晓婷,刘乃安,OFDMA 无线宽带接入系统简介及性能仿真分析,电力系统通信,第26卷第148期,页42-44
[26]吴伟陵,牛凯,移动通信原理,电子工业出版社,2005
[27]V.Tarokh,N.Seshadri,A.Calderbank,“Space-time codes for high data rate wireless communication:Performance criterion and code construction”,IEEE Trans.Infor Theory,Vol.44,pp.744-765,March 1998.
[28]Siavash.M.Alamouti,“A simple transmit diversity technique for wireless communications”,IEEE Journal on Selected Areas in Communications,vol.16,pp.1451-1458,October 1998.
[29]Tarokh,V.;Jafarkhani,H.;“Space-time block codes from orthogonal designs”;Information Theory,IEEE Transactions on,Volume:45 Issue:5,July 1999 Page(s):1456-1467
[30]蒋亮,郭健,下一代网络移动IPv6技术,:机械工业出版社,2005
[31]王海洋,苗鹏峰,移动IP技术,移动通信,2005.8
[32]顾晓丹,徐子平,移动IP技术在超三代移动通信中的应用,信息技术与标准化,2006.4
[33]王卫东,高鹏,张英海,第3代移动通信系统设计原理与规划,电子工业出版社,2007
[34]王莹,张平编著,无线资源管理,北京邮电大学出版社,2005
[35]Diaz E M,Noguet D,Rosson P,et al.4G scenarios and system requirements[EB/OL].http://ist strike.org/public/STRIKE-WP3-LORA-DR-Int-017-11.pdf,2003 04/2004 04.
[36]LIN P,LIN Y B.Channel allocation for GPRS.IEEE Trans Vehicular Technology,2001,50(2):375-387.
[37]HUANG Q,CHAN S.An enhanced handoff control scheme for multimedia traffic in cellular networks[J].Communications Letters,IEEE,2004,8(3):195-197.
[38]LI W,CHEN H,AGRAWAL D P.Performance analysis of handoff schemes with preemptive and nonpreemptive channel borrowing in integrated wireless cellular networks[J].Wireless Communications,IEEE Transactions on,2005,4(3):1222-1233.
[39]SHANG Dan,NI Li,ZHANG Ping,A Dynamic Priority Reservation Queue Scheme for handover in Mobile Cellular Systems Supporting Multi-rate traffics.Personal,Indoor and Mobile Radio Communication Proceedings.The 14th IEEE Proceedings on Volume 2,7-10 Sept.2003Page:1461-1465
[40]李剑,胡波,多载波蜂窝移动通信系统中的多业务切换算法,通信学报,2007,第28卷,第3期
[41]陈静,曹达仲,侯春萍,业务环境下切换优先算法的改进,铁道学报,2003,第25卷,第4期