WCDMA系统中接入控制策略的研究与仿真
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摘要
WCDMA技术是第三代移动通信系统(3G)的主要标准之一,无线资源管理(RRM)则是该技术得以实现的重要途径。本文概括介绍了RRM的关键技术,重点研究了其中的无线接入控制策略及其在分层小区系统中的运用。
WCDMA系统是一个干扰受限系统,新呼叫的连接建立将导致上下行负载增加,影响系统已有的激活呼叫的服务质量。当系统负载较重时,新呼叫的接入可能导致已有呼叫连接发生中断,造成系统不稳定。为了保证系统处于稳定状态下,尽可能获得大的系统容量,必须采用无线接入控制技术。该技术根据系统当前的负载和稳定性要求判决是否接入新呼叫。无线接入控制是保证各级业务服务质量和提高系统容量的关键技术。
本论文分析了基于干扰门限的接入控制算法,研究了此算法在新呼叫接入控制过程中的实现过程。设计测试用例,并在实际的WCDMA系统上进行了测试,测试结果验证了此算法的可行性和有效性,为WCDMA系统的网络优化提供了参考数据。
接着,在WCDMA分层小区系统中,结合该系统结构的特点,对宏小区和微小区上行链路所受的干扰情形分别进行了分析,将基于干扰门限的接入控制算法改进后运用到该系统中,对宏小区和微小区分别运用不同的接入控制策略实时地对呼叫请求作相应控制,保证正在通话的移动用户的通信质量和系统的稳定性。并在基于OPNET的网络仿真平台上以实时语音和非实时数据两种典型业务为研究对象进行了系统仿真,得到了该算法对新呼叫、切换呼叫的语音业务和ftp数据业务的阻塞率。仿真结果验证了该算法在分层小区系统中的可行性和有效性,为以后分层小区系统的网络设计提供了参考模型和算法。
The WCDMA technology is one of the main standards of the third Generation mobile communication system (3G) while Radio Resource Management (RRM) is an important way for its implementation. This thesis briefly introduces the key technology of system RRM and further research is done with the Radio Admission Control (RAC) policy and also its application in Hierarchical Cell System.WCDMA is an interference-limited system. A setting up of new call connection will result in the load enhancement of both uplink and downlink and affect quality of service of the present activated calls in the system. The access of new call may lead to the breaking off to the present call connection and the instability of system when the system is loaded heavily. In order to ensure acquiring the maximum system capacity while the system is at the stable state, we must adopt Radio Admission Control policy that judges whether to access a new call according to the present load and requirement stability of system. Radio Admission Control is the key technology to ensure the quality of multi-class service and improve system capacity.This thesis analyse the Radio Admission Control algorithm that based on interference—threshold. It does further research about the realization process of the algorithm in admission control process of new call service and the test results validate its feasibility and validity through WCDMA system test. And referenced data are provided for the design of the real WCDMA system.And then, the thesis analyses separately the Uplink interference of macro-cell and micro-cell combining the characteristic of hierarchical cell system of WCDMAThe algorithm that based on interference—threshold is applied to the hierarchical cell system. System timely deals with the call requests according to the interference level of local cell and adjacent cells, which ensure the communication quality of present activated calls and the stability of system.Two typical services including voice and data are simulated using OPNET network simulation software and get the result that the block radio of voice service and ftp data service in new calls and handover calls. The simulation result
validates the feasibility and validity of this algorithm. And referenced models and algorithm are provided for the programming and design of the hierarchical cell system of WCDMA.
WCDMA系统是一个干扰受限系统,新呼叫的连接建立将导致上下行负载增加,影响系统已有的激活呼叫的服务质量。当系统负载较重时,新呼叫的接入可能导致已有呼叫连接发生中断,造成系统不稳定。为了保证系统处于稳定状态下,尽可能获得大的系统容量,必须采用无线接入控制技术。该技术根据系统当前的负载和稳定性要求判决是否接入新呼叫。无线接入控制是保证各级业务服务质量和提高系统容量的关键技术。
本论文分析了基于干扰门限的接入控制算法,研究了此算法在新呼叫接入控制过程中的实现过程。设计测试用例,并在实际的WCDMA系统上进行了测试,测试结果验证了此算法的可行性和有效性,为WCDMA系统的网络优化提供了参考数据。
接着,在WCDMA分层小区系统中,结合该系统结构的特点,对宏小区和微小区上行链路所受的干扰情形分别进行了分析,将基于干扰门限的接入控制算法改进后运用到该系统中,对宏小区和微小区分别运用不同的接入控制策略实时地对呼叫请求作相应控制,保证正在通话的移动用户的通信质量和系统的稳定性。并在基于OPNET的网络仿真平台上以实时语音和非实时数据两种典型业务为研究对象进行了系统仿真,得到了该算法对新呼叫、切换呼叫的语音业务和ftp数据业务的阻塞率。仿真结果验证了该算法在分层小区系统中的可行性和有效性,为以后分层小区系统的网络设计提供了参考模型和算法。
The WCDMA technology is one of the main standards of the third Generation mobile communication system (3G) while Radio Resource Management (RRM) is an important way for its implementation. This thesis briefly introduces the key technology of system RRM and further research is done with the Radio Admission Control (RAC) policy and also its application in Hierarchical Cell System.WCDMA is an interference-limited system. A setting up of new call connection will result in the load enhancement of both uplink and downlink and affect quality of service of the present activated calls in the system. The access of new call may lead to the breaking off to the present call connection and the instability of system when the system is loaded heavily. In order to ensure acquiring the maximum system capacity while the system is at the stable state, we must adopt Radio Admission Control policy that judges whether to access a new call according to the present load and requirement stability of system. Radio Admission Control is the key technology to ensure the quality of multi-class service and improve system capacity.This thesis analyse the Radio Admission Control algorithm that based on interference—threshold. It does further research about the realization process of the algorithm in admission control process of new call service and the test results validate its feasibility and validity through WCDMA system test. And referenced data are provided for the design of the real WCDMA system.And then, the thesis analyses separately the Uplink interference of macro-cell and micro-cell combining the characteristic of hierarchical cell system of WCDMAThe algorithm that based on interference—threshold is applied to the hierarchical cell system. System timely deals with the call requests according to the interference level of local cell and adjacent cells, which ensure the communication quality of present activated calls and the stability of system.Two typical services including voice and data are simulated using OPNET network simulation software and get the result that the block radio of voice service and ftp data service in new calls and handover calls. The simulation result
validates the feasibility and validity of this algorithm. And referenced models and algorithm are provided for the programming and design of the hierarchical cell system of WCDMA.
引文
1.张平,王卫东,陶小峰,王莹等编著.WCDMA移动通信系统.北京:人民邮电出版社,2004年第二版
2.哈里·霍尔马,安提·托斯卡拉著,WCDMA技术与系统设计,(付景兴、周华等译),北京:机械工业出版社,2002
3.王莹,张平编著.无线资源管理.北京:北京邮电大学出版社,2005
4. 3GPP TS 25.401 V6.5.0 UTRAN Overall Description, Sep. 2005
5. 36PP TR25.931 V4.4.0 UTRAN Functions, Examples on Signalling Procedures (Release 4), June 2002
6. 3GPP TS25.301 V4.4.0 Radio Interface Protocol Architecture (Release 4),September 2002
7. Rebecca. Zhang, RNC RRM RAC HLD, UTStarcom technology document, February 2004
8. 3GPP TS 25.101 V6.5.0 UE Radio Transmission and Reception(FDD, Release 4), Sep. 2005
9. 3GPP TS 25.331 V6.8.0 Radio Resource Control (RRC) Protocol Specificat ion, Dec. 2005
10. 3GPP TS 25. 410 V6.3.0 UTRAN Iu Interface: General Aspects and Principles, Sep. 2005
11. 3GPP TS 25. 430 V6.3.0 UTRAN Iub Interface: General Aspects and Principles, Sep. 2005
12. 3GPP TS 25.922 V6.8.0 Radio Resource Management Stratedgies, Dec. 2005
13. Z. Liu, M.E. Zerki, call admission control for DS-CDMA cellular systems, IEEE Journal on S.A.C. 1999,12(4):638-644
14. C.Y. Huang, R.D. Yates, Call admission in power controlled CDMA sytems, IEEE proc. of VTC' 96,1996:1665-1669
15. Evans J.S., Everit D., Elective bandwidth-based admission control for multi service CDMA cellular networks, Vehicular Technology, IEEE Transactions on 1999,48(1):36-46
16.Jaana Laiho,Achim Wacker,Tomas Novosad编著.UMTS无线网络规划与优化, (孙献璞译).北京:电子工业出版社,2005
17. Kuenyoung Kim, Youngnam Han, A call admission control with thresholds for multi-rate traffic in CDMAsystems, VTC 2000-Spring Tokyo 2000 IEEE 51st, 2000, Volume2:830-834
18. LEONG C W, ZHUANG W H. Novel system modeling in call admission control for wireless personal communications. IEEE CLOBECOM 2000[C]. San Francisco, 2000,177-181
19. CUI W, SHEN X M. User movement tendency prediction and call admission control for cellular networks. IEEE ICC 2000[C]. New Orleans, USA, 2001: 670-674
20.沈洁、申志坚、李楠编著.第三代移动通信中的无线资源管理.北京:电子工业出版社,2005年第一版
21.杨峰义,覃燕敏,胡强编著,wCDMA无线网络工程,人民邮电出版社,2004年第二版
22.K.I.Kim编著,刘晓宇,杜志敏译,CDMA系统设计与优化,北京,人民邮电出版社,2004年第二版
23. Bright Xu, 3.0_SRS _RRM_1.1, UTStarcom technology document, February 2004, 46-47
24. Jerry Xu, RRM SDS 0.7 (RAC, LC and PS) for SR3.0, UTStarcom technology document, April 2004, 14-16
25. Bright Xu, RRM Strategy Introduction(SR2.5&SR3.5), UTStarcom technology document, June 2004, 1-2
26. Johnson Zhuang, MovingMedia RNC & RAN Test, UTStarcom technology document, June 2003
27. 36PP TS25.133 V4.9.0 Requirements for support of radio resource manag ement (Release 4), June 2003
28. Rebecca Zhang, MovingMedia RAC Test, UTStarcom technology document, June 2003
29. Madou Zhao, MovingMedia Uu Interface Parameter, UTStarcom technology document, May 2004
30. Wang Ying, Zhang Jingmei, Wang Weidong, Zhang Ping. Call Admission Control in Hierarchical Cell Structure. IEEE VTC 2002:1955-1959
31. Chengshan Xiao, karl D. Mann and Jan C. Olivier, "Mobile Speed Estimation for TDMA-Based Hierarchical Cellular Systems," IEEE TRANSACTION ON VEHICULAR TECHNOLOGY, JULY 2001, VOL. 50, NO. 4
32. I.M. Kim, B.C. Shin, D.J. Lee, SIR-based call admission control by intercell interference prediction for DS-CDMA cellular systems, IEEE Commun. Letters, 2000,4(1),:29-31
33. Chengshan Xiao, karl D. Mann and Jan C. Olivier, "Mobile Speed Estimation for Hierarchical Cellular Systems," IEEE TRANSACTION ON VEHICULAR TECHNOLOGY, JULY 2001, VOL. 50, NO. 4
34. S.M. shin, C. Cho, D.K. Sung, Interference-based channel assignment for CDMA cellular systems, IEEE J. Select. Areas Commun, 2001,48(1):233-239
35.王宇,多业务CDMA蜂窝通信系统容量性能和无线资源管理算法研究,博士学位论文,成都:电子科技大学,2002
36. Zhao Liu, EL Zarki M..SIR-based call admission control for DS-CDMA cellular systems. IEEE Journal. on Selected Areas in Communications, 2002,12(4):638-644
37. S.M. shin, D.K. Sung, DS-CDMA reverse link channel assignment based on interference measurement, IEEE, 2001, 31(22): 1895-1899
38.陈敏编著,OPNET网络仿真,北京:清华大学出版社,2004年第二版
39.孙歧、孟晨编著,OPNET通信仿真开发手册,国防工业出版社,2005年第一版
2.哈里·霍尔马,安提·托斯卡拉著,WCDMA技术与系统设计,(付景兴、周华等译),北京:机械工业出版社,2002
3.王莹,张平编著.无线资源管理.北京:北京邮电大学出版社,2005
4. 3GPP TS 25.401 V6.5.0 UTRAN Overall Description, Sep. 2005
5. 36PP TR25.931 V4.4.0 UTRAN Functions, Examples on Signalling Procedures (Release 4), June 2002
6. 3GPP TS25.301 V4.4.0 Radio Interface Protocol Architecture (Release 4),September 2002
7. Rebecca. Zhang, RNC RRM RAC HLD, UTStarcom technology document, February 2004
8. 3GPP TS 25.101 V6.5.0 UE Radio Transmission and Reception(FDD, Release 4), Sep. 2005
9. 3GPP TS 25.331 V6.8.0 Radio Resource Control (RRC) Protocol Specificat ion, Dec. 2005
10. 3GPP TS 25. 410 V6.3.0 UTRAN Iu Interface: General Aspects and Principles, Sep. 2005
11. 3GPP TS 25. 430 V6.3.0 UTRAN Iub Interface: General Aspects and Principles, Sep. 2005
12. 3GPP TS 25.922 V6.8.0 Radio Resource Management Stratedgies, Dec. 2005
13. Z. Liu, M.E. Zerki, call admission control for DS-CDMA cellular systems, IEEE Journal on S.A.C. 1999,12(4):638-644
14. C.Y. Huang, R.D. Yates, Call admission in power controlled CDMA sytems, IEEE proc. of VTC' 96,1996:1665-1669
15. Evans J.S., Everit D., Elective bandwidth-based admission control for multi service CDMA cellular networks, Vehicular Technology, IEEE Transactions on 1999,48(1):36-46
16.Jaana Laiho,Achim Wacker,Tomas Novosad编著.UMTS无线网络规划与优化, (孙献璞译).北京:电子工业出版社,2005
17. Kuenyoung Kim, Youngnam Han, A call admission control with thresholds for multi-rate traffic in CDMAsystems, VTC 2000-Spring Tokyo 2000 IEEE 51st, 2000, Volume2:830-834
18. LEONG C W, ZHUANG W H. Novel system modeling in call admission control for wireless personal communications. IEEE CLOBECOM 2000[C]. San Francisco, 2000,177-181
19. CUI W, SHEN X M. User movement tendency prediction and call admission control for cellular networks. IEEE ICC 2000[C]. New Orleans, USA, 2001: 670-674
20.沈洁、申志坚、李楠编著.第三代移动通信中的无线资源管理.北京:电子工业出版社,2005年第一版
21.杨峰义,覃燕敏,胡强编著,wCDMA无线网络工程,人民邮电出版社,2004年第二版
22.K.I.Kim编著,刘晓宇,杜志敏译,CDMA系统设计与优化,北京,人民邮电出版社,2004年第二版
23. Bright Xu, 3.0_SRS _RRM_1.1, UTStarcom technology document, February 2004, 46-47
24. Jerry Xu, RRM SDS 0.7 (RAC, LC and PS) for SR3.0, UTStarcom technology document, April 2004, 14-16
25. Bright Xu, RRM Strategy Introduction(SR2.5&SR3.5), UTStarcom technology document, June 2004, 1-2
26. Johnson Zhuang, MovingMedia RNC & RAN Test, UTStarcom technology document, June 2003
27. 36PP TS25.133 V4.9.0 Requirements for support of radio resource manag ement (Release 4), June 2003
28. Rebecca Zhang, MovingMedia RAC Test, UTStarcom technology document, June 2003
29. Madou Zhao, MovingMedia Uu Interface Parameter, UTStarcom technology document, May 2004
30. Wang Ying, Zhang Jingmei, Wang Weidong, Zhang Ping. Call Admission Control in Hierarchical Cell Structure. IEEE VTC 2002:1955-1959
31. Chengshan Xiao, karl D. Mann and Jan C. Olivier, "Mobile Speed Estimation for TDMA-Based Hierarchical Cellular Systems," IEEE TRANSACTION ON VEHICULAR TECHNOLOGY, JULY 2001, VOL. 50, NO. 4
32. I.M. Kim, B.C. Shin, D.J. Lee, SIR-based call admission control by intercell interference prediction for DS-CDMA cellular systems, IEEE Commun. Letters, 2000,4(1),:29-31
33. Chengshan Xiao, karl D. Mann and Jan C. Olivier, "Mobile Speed Estimation for Hierarchical Cellular Systems," IEEE TRANSACTION ON VEHICULAR TECHNOLOGY, JULY 2001, VOL. 50, NO. 4
34. S.M. shin, C. Cho, D.K. Sung, Interference-based channel assignment for CDMA cellular systems, IEEE J. Select. Areas Commun, 2001,48(1):233-239
35.王宇,多业务CDMA蜂窝通信系统容量性能和无线资源管理算法研究,博士学位论文,成都:电子科技大学,2002
36. Zhao Liu, EL Zarki M..SIR-based call admission control for DS-CDMA cellular systems. IEEE Journal. on Selected Areas in Communications, 2002,12(4):638-644
37. S.M. shin, D.K. Sung, DS-CDMA reverse link channel assignment based on interference measurement, IEEE, 2001, 31(22): 1895-1899
38.陈敏编著,OPNET网络仿真,北京:清华大学出版社,2004年第二版
39.孙歧、孟晨编著,OPNET通信仿真开发手册,国防工业出版社,2005年第一版