异构网络无线资源管理关键技术研究
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摘要
本文主要研究了异构无线系统的三种无线资源管理技术,主要场景为TD-SCDMA/TD-LTE异构蜂窝网络和集成LTE/WLAN异构网络,并对上述两种场景的异构无线系统的小区重选技术、负载控制技术、资源调度技术以及资源管理架构进行了详细的研究。主要工作和创新点归结如下：
1.针对TD-SCDMA/TD-LTE异构蜂窝网络,提出了改进的小区重选方法,基于3GPP协议中定义的跨系统小区重选方法做出改进,实现了对于指定小区的重选控制,以防止网络发生过载,降低过载概率,提升平均用户QoS；进一步地,采用二维马尔可夫模型,依照路损模型对网络进行建模,推导出网络的性能指标,并采用MATLAB仿真给出了原方案和改进的小区重选方案的性能差异。
2.针对集成LTE/WLAN异构网络,提出了一种分离式负载控制模型,该模型针对已有的负载控制模型计算复杂度过高的问题,采用分离式的建模思路,通过构造一系列简单的SMDP线性规划问题来逼近原问题,极大地降低了问题的计算复杂度,同时针对实际的异构系统给出了该负载控制算法的具体流程；为了评价分离式负载控制模型的正确性,通过MATLAB仿真结果给出了原模型和新模型的策略结果对比以及性能差异。
3.针对异构无线系统的分层数据流传输场景,给出了数据子层颗粒度的资源调度流程,包括终端确定其绑定数据子层数目的方法,网络确定其转发数据子层的方法,以及转发节点的拥塞控制策略；并且,针对本文提出的所有异构无线系统的资源管理技术,给出了一种资源管理架构模型,定义了架构内的功能实体来完成所有提出的资源管理功能,并给出了网络架构和具体的资源管理流程。
This work mainly focuses on3types of radio resource management techniques in heterogeneous wireless system. Primary scenarios include TD-SCDMA/TD-LTE heterogeneous cellular network and integrated LTE/WLAN heterogeneous network. Detailed technical solutions including cell reselection technique, load control technique, resource scheduling technique and RRM structure are investigated in these two scenarios. Primary work and innovations are summarized as follows:
1. For TD-SCDMAA/TD-LTE heterogeneous cellular network, an enhanced cell reselection mechanism is proposed based on existing3GPP protocol for inter-system cell reselection, which achieves the control of cell reselection behavior to prevent load, decrease overload probability and increase average QoS; Furthermore, a2-dimensional markov model is build based on path loss model. The network criteria are derived and evaluated by MATLAB simulation, which illustrates the difference of performances between the original mechanism and the proposed mechanism.
2. For integrated LTE/WLAN heterogeneous network, a separate load control model is proposed to solve the computational complexity problem of existing load control model, by utilizing the separate modeling method to build a series of simple SMDP linear programming problem to approximate the original problem, which greatly decreases the computational complexity. Algorithms of the proposed load control model in actual heterogeneous system are described in detail. To verify the rationality of the separate load control model, by utilizing MATLAB simulation we evaluate the difference of performance between policy results from the original model and the proposed model.
3. For the layered streaming transmission scenario in heterogeneous wireless system, a set of resource scheduling mechanism is proposed, including the mechanism to determine user equipment's subscription number of layered stream, the mechanism to determine the transmission number of layered stream for the network, and the congestion control strategy of forwarding nodes; Furthermore, to integrate all the proposed radio resource management techniques in heterogeneous wireless system, a radio resource management structure is proposed. Entities within the structure are defined to accomplish all management function, and detailed network structure and management process are described.
1.针对TD-SCDMA/TD-LTE异构蜂窝网络,提出了改进的小区重选方法,基于3GPP协议中定义的跨系统小区重选方法做出改进,实现了对于指定小区的重选控制,以防止网络发生过载,降低过载概率,提升平均用户QoS；进一步地,采用二维马尔可夫模型,依照路损模型对网络进行建模,推导出网络的性能指标,并采用MATLAB仿真给出了原方案和改进的小区重选方案的性能差异。
2.针对集成LTE/WLAN异构网络,提出了一种分离式负载控制模型,该模型针对已有的负载控制模型计算复杂度过高的问题,采用分离式的建模思路,通过构造一系列简单的SMDP线性规划问题来逼近原问题,极大地降低了问题的计算复杂度,同时针对实际的异构系统给出了该负载控制算法的具体流程；为了评价分离式负载控制模型的正确性,通过MATLAB仿真结果给出了原模型和新模型的策略结果对比以及性能差异。
3.针对异构无线系统的分层数据流传输场景,给出了数据子层颗粒度的资源调度流程,包括终端确定其绑定数据子层数目的方法,网络确定其转发数据子层的方法,以及转发节点的拥塞控制策略；并且,针对本文提出的所有异构无线系统的资源管理技术,给出了一种资源管理架构模型,定义了架构内的功能实体来完成所有提出的资源管理功能,并给出了网络架构和具体的资源管理流程。
This work mainly focuses on3types of radio resource management techniques in heterogeneous wireless system. Primary scenarios include TD-SCDMA/TD-LTE heterogeneous cellular network and integrated LTE/WLAN heterogeneous network. Detailed technical solutions including cell reselection technique, load control technique, resource scheduling technique and RRM structure are investigated in these two scenarios. Primary work and innovations are summarized as follows:
1. For TD-SCDMAA/TD-LTE heterogeneous cellular network, an enhanced cell reselection mechanism is proposed based on existing3GPP protocol for inter-system cell reselection, which achieves the control of cell reselection behavior to prevent load, decrease overload probability and increase average QoS; Furthermore, a2-dimensional markov model is build based on path loss model. The network criteria are derived and evaluated by MATLAB simulation, which illustrates the difference of performances between the original mechanism and the proposed mechanism.
2. For integrated LTE/WLAN heterogeneous network, a separate load control model is proposed to solve the computational complexity problem of existing load control model, by utilizing the separate modeling method to build a series of simple SMDP linear programming problem to approximate the original problem, which greatly decreases the computational complexity. Algorithms of the proposed load control model in actual heterogeneous system are described in detail. To verify the rationality of the separate load control model, by utilizing MATLAB simulation we evaluate the difference of performance between policy results from the original model and the proposed model.
3. For the layered streaming transmission scenario in heterogeneous wireless system, a set of resource scheduling mechanism is proposed, including the mechanism to determine user equipment's subscription number of layered stream, the mechanism to determine the transmission number of layered stream for the network, and the congestion control strategy of forwarding nodes; Furthermore, to integrate all the proposed radio resource management techniques in heterogeneous wireless system, a radio resource management structure is proposed. Entities within the structure are defined to accomplish all management function, and detailed network structure and management process are described.
引文
[1].3GPP TR 25,881 v1.0.0, "Technical.Specification Group Radio Access Network; Improvement of RRM across RNS and RNS/BSS", Jan.2001.
[2].3GPP TS 36.101 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); User Equipment(UE) radio transmission and reception", Dec.2007.
[3].3GPP TS 36.133 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management", Dec.2007.
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[5].3GPP TS 36.304 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode", Dec.2007.
[6].3GPP TS 36.322 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification", Dec.2007.
[7].3GPP TS 36.323 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) specification, Dec.2007.
[8].3GPP TS 36.331 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC) protocol specification", Dec.2007.
[9].3GPP TS 25.813 v1.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); radio interface protocol aspects", Jan.2001.
[10].3GPP TS 36.401 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); E-UTRAN architecture description", Dec.2007.
[11].3GPP TS 36.410 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 general aspects", Dec.2007.
[12].3GPP TS 36.411 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 layer 1", Dec.2007.
[13].3GPP TS 36.412 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 signaling transport", Dec.2007.
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[33]. M. Pan, J. Chen, R. Liu, Z. Feng, Y. Wang, P. Zhang, "Dynamic Spectrum Access and Joint Radio Resource Management Combining for Resource Allocation in Cooperative Networks," Proc. IEEE WCNC'07, pp.2746-2751, Mar.2007.
[34]. H.I. Del Monego, J.M. Oliveira, M. Ricardo, "Performance Analysis of Joint Radio Resource anagement Strategies for Beyond 3G Networks," Proc. IEEE NGMAST'09, pp.317-322, Sept.2009.
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[2].3GPP TS 36.101 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); User Equipment(UE) radio transmission and reception", Dec.2007.
[3].3GPP TS 36.133 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management", Dec.2007.
[4].3GPP TS 36.300 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall Description; Stage2", Dec.2007.
[5].3GPP TS 36.304 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode", Dec.2007.
[6].3GPP TS 36.322 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification", Dec.2007.
[7].3GPP TS 36.323 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) specification, Dec.2007.
[8].3GPP TS 36.331 v8.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC) protocol specification", Dec.2007.
[9].3GPP TS 25.813 v1.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); radio interface protocol aspects", Jan.2001.
[10].3GPP TS 36.401 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); E-UTRAN architecture description", Dec.2007.
[11].3GPP TS 36.410 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 general aspects", Dec.2007.
[12].3GPP TS 36.411 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 layer 1", Dec.2007.
[13].3GPP TS 36.412 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 signaling transport", Dec.2007.
[14].3GPP TS 36.413 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 protocol specification (S1 AP)", Dec.2007.
[15].3GPP TS 36.414 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 data transport", Dec.2007.
[16].3GPP TS 36.423 v8.0.0, "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 protocol specification (X2 AP)", Dec.2007.
[17]. F. Yu, V. Krishnamurthy, "Optimal Joint Session Admission Control in Integrated WLAN and CDMA Cellular Network with Vertical Handoff," IEEE Trans. Mobile Computing, vol.6, no.1, pp.126-139, Jan.2007.
[18]. A. Hasib, A. Fapojuwo, "Joint Radio Resource Management over Very tightly Coupled Heterogeneous Networks for Multimode Reconfigurable Terminals,' IEEE Trans. Vehicular Technology, vol.2, pp.727-731, May.2006.
[19]. D. Niyato, E. Hossain, D.Kim, "Joint Admission Control and Antenna Assignment for Multiclass QoS in Spatial Multiplexing MIMO Wireless Networks," IEEE Trans. Wireless Communications, vol.8, no.9, pp.4855-4865, Sept.2009.
[20]. E. Stevens-Navarro, Y. Lin, V. Wong, "An MDP-Based Vertical Handoff Decision Algorithm for Heterogeneous Wireless Networks," IEEE Trans. Vehicular Technology, vol 57, no 2, pp.1243-1254, Mar.2008.
[21]. S. Singh, V. Krishnamurthy, H. Vincent Poor, "Integrated Voice/Data Call Admission Control for Wireless DS-CDMA Systems," IEEE Trans. Signal Processing, vol.50, no.6, pp.1483-1495, Jun.2002.
[22]. Z. Zhang, V.O.K. Li, "Network-Supported Layered Multicast Transport Control for Streaming Media," IEEE Trans. Parallel and Distributed Systems, vol.18, no.9, pp.1332-1344, Sept.2007.
[23]. X. Xiao, Y. Shi, Q. Zhang, J. Shen, Y. Gao, "Toward Systematical Data Scheduling for Layered Streaming in Peer-to-Peer Networks:Can We Go Farther?" IEEE Trans. Parallel and Distributed Systems, vol.21, no.5, pp.685-697, May.2010.
[24]. T. Kim, M.H. Ammar, "A Comparison of Heterogeneous Video Multicast Schemes Layered Encoding or Stream Replication," IEEE Trans. Multimedia, vol.7, no.6, pp.1123-1130, Dec.2005.
[25]. S. Park, H. Yoon, J. Kim, "A Cross-Layered Network-Adaptive HD Video Streaming in Digital A/V Home Network Channel Monitoring and Video Rate Adaptation," IEEE Trans. Consumer Electronics, vol.52, no.4, pp.1245-1252, Nov. 2006.
[26]. Q.Song, A. Jamalipor, "Network Selection in an Integrated WLAN and UMTS Environment Using Mathematical Modeling and Computing Techniques," IEEE Wireless Communications, vol.12, no.3, pp.42-48, June 2005.
[27]. X. Gelabert, J. Perez-Romero, O. Sallent, R. Augsti, "A Markovian Approach to Radio Access Technology Selection in Heterogeneous Multiaccess/Multiservice Wireless Networks," IEEE Trans. Mobile Computing, vol.7, no.7, pp.1257-1270, Oct.2008;
[28]. J. Luo, R. Mukerjee, M. Dillinger, E. Mohyeldin, E. Schulaz, "Investigation of Radio Resource Scheduling in WLANs Coupled with 3G Cellular Network," IEEE Communications Magazine, vol.41, no.6, pp.108-115, June 2003.
[29]. W. Sheng, S. Blostein, "A Maximum-Throughput Call Admission Control Policy for CDMA Beamforming Systems," Proc. IEEE WCNC'08, pp.2986-2991, Mar.2008.
[30]. J. Hou, J. Yang, S. Papavassiliou, "Integration of Pricing with Call Admission Control to Meet QoS Requirements in Cellular Networks," IEEE Trans. Parallel and Distributed Systems, vol.13, no.9, pp.898-910, Sept.2002.
[31]. H. Son, S. LEE, S. Kim, Y. Shin, "Soft Load Balancing Over Heterogeneous Wireless Networks," IEEE Trans. Vehicular Technology, vol.57, no.4, pp.2632-2638, July 2008.
[32]. M. Coupechous, J. Kelif, P. Godlewski, "Network Controlled Joint Radio Resource Management for Heterogeneous Network," Proc. IEEE VTC Spring'08, pp. 1771-1775, May.2008.
[33]. M. Pan, J. Chen, R. Liu, Z. Feng, Y. Wang, P. Zhang, "Dynamic Spectrum Access and Joint Radio Resource Management Combining for Resource Allocation in Cooperative Networks," Proc. IEEE WCNC'07, pp.2746-2751, Mar.2007.
[34]. H.I. Del Monego, J.M. Oliveira, M. Ricardo, "Performance Analysis of Joint Radio Resource anagement Strategies for Beyond 3G Networks," Proc. IEEE NGMAST'09, pp.317-322, Sept.2009.
[35]. D. Fan, V Le, Z. Feng, Z. Hu, X. Wang, "Adaptive Joint Session Scheduling for Multimedia Services in Heterogeneous Wireless Networks," Proc. IEEE VTC Fall'09, Sept.2009.
[36]. S. McCanne, V. Jacobson, M. Vetterli, "Receiver-driven Layered Multicast," Proc. ACMSIGCOMM'96, Aug.1996.
[37]. Y. Guang, C. Jie, Y. Kai, Z. Ping," Joint Radio Resource Management based on the Species Competition Model," Proc. IEEE WCNC'06, vol.1, pp.52-57, Apr. 2006.
[38]. X. Liu, V. Li, P. Zhang, "Joint Radio Resource Management through Vertical Handoffs in 4G Networks," Proc. IEEE GLOBECOM'06, Nov.2006.
[39]. G.Q. Ning, G.X. Zhu, "Load Balancing Based on Traffic Selection in Heterogeneous Overlapping Cellular Networks," Proc. IEEE and IFIP ICCA'05, Sept.2005.
[40]. L. Bin, S. Wenxiao, L. Na, "AHierarchical Semi-centralized Architecture for Load Balancing of Heterogeneous Wireless Networks," Proc. NSWCTC'10, vol.2, pp.28-31, Apr.2010.
[41]. Q. Nguyen-Vuong, N. Agoulmine, Y. Ghamr-Doudance, "Novel Approach for Load Balancing in Heterogeneous Wireless Packet Networks," IEEE NOMS workshops 2008, pp.26-31, Apr.2008.
[42]. J. Ha, J. Kim, J. Kim, S. Kim, "Dynamic Load Balancing Architecture in Heterogeneous Wireless Network Environment," Proc. ISCIT'09, pp.248-253, Sept. 2009.
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