* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Interworked WiMAX-3G Cellular Data Networks: An Architecture for
Survey
Document related concepts
Computer network wikipedia , lookup
Distributed firewall wikipedia , lookup
Wake-on-LAN wikipedia , lookup
Airborne Networking wikipedia , lookup
Wireless security wikipedia , lookup
Network tap wikipedia , lookup
Recursive InterNetwork Architecture (RINA) wikipedia , lookup
Deep packet inspection wikipedia , lookup
Zero-configuration networking wikipedia , lookup
List of wireless community networks by region wikipedia , lookup
Piggybacking (Internet access) wikipedia , lookup
Cracking of wireless networks wikipedia , lookup
SIP extensions for the IP Multimedia Subsystem wikipedia , lookup
Transcript
Interworked WiMAX-3G Cellular Data Networks: Company AnLOGO Architecture for Mobility Management and Performance Evaluation IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO. 4, APRIL 2009 Kumudu S. Munasinghe, Student Member, IEEE, and Abbas Jamalipour, Fellow, IEEE 指導教授: 童曉儒 教授 學生:許益晨 Outline Introduction IMS Based Session Management WiMAX-3G Cellular Interworking Performance Modeling Numerical Results and Analysis Conclusions and Future Work 2 Introduction Mobile WiMAX networks are still in its infancy with many technical challenges lying ahead. The lack of an infrastructure for the WiMAX Core Network (CN). If mobile WiMAX is interworked with the already well established 3G cellular networks, that it may become an essential partner of the future 4G networks. 3 Introduction Mobile IP (MIP) has been exploited as the mobility management mechanism in most of these designs. The primary focus of this paper is to introduce novel architecture and investigate various performance measures such as vertical handoff delay transient packet loss jitter signaling cost relating to vertical handoff management. 4 IMS Based Session Management The IP Multimedia Subsystem (IMS) is an architectural framework for delivering Internet Protocol (IP) multimedia services. The user can connect to an IMS network in various ways, most of which use the standard Internet Protocol (IP). When roaming , they can use IP and run Session Initiation Protocol (SIP) user agents 5 IMS Based Session Management Radio Access Network Core Network PDN or PSTN IP Multimedia Subsystem (IMS) GERAN SGSN Application Servers (ASs) GGSN MS Game UTRAN IMPS Download DRM SIP Server HSS/HLR Call Session Control Functions (CSCFs) UE P-CSCF AAA Server S-CSCF RTP Proxy BGCF Packet Data Gateway (PDG) SIP UA I-CSCF CSP 802.11 WLAN MS NTP VoIP Platform SIP Analyzer PSTN Gateway CGW 802.16 WiMAX PSTNs SS 使用者設備(User Equipment) 無線網路存取網路(Radio Access Network 核心網路(Core Network) 6 IMS Based Session Management Proxy-CSCF (P-CSCF) is a SIP proxy that is the first point of contact for the IMS terminal. Serving-CSCF (S-CSCF) is the central node of the signalling plane. It uses Diameter Cx and Dx interfaces to the HSS to download and upload user profiles — it has no local storage of the user. All necessary information is loaded from the HSS. Interrogating-CSCF (I-CSCF) is another SIP function located at the edge of an administrative domain. Its IP address is published in the Domain Name System (DNS) of the domain , so that remote servers can find it, and use it as a forwarding point (e.g. registering) for SIP packets to this domain. 7 IMS Based Session Management 8 WiMAX-3G Cellular Interworking A. Architectural Considerations Design will be primarily based on MIPv4 3GPP2’s IMS does not fully support inter-Packet Data Switching Node(PDSN) mobility for IPv6. Eliminates the complexity of managing two IP addresses and enables IP mobility management transparently to the layers above. 9 WiMAX-3G Cellular Interworking B. Interworking Architecture 10 Performance Modeling A.Handoff Delay Analysis A standard vertical handoff during mid-session mobility comprises of: D1 = link layer handoff delay D2 = movement detection delay D3 = address allocation delay D4 = session re-configuration delay D5 = packet re-transmission delay D4 = Dw1 + Dw + Lw1 + Lw Dwl : total delay at the wireless Dw :total delay at the wired link Lwl :latency of the wireless link Lw :latency of the wired link. 11 Performance Modeling A.Handoff Delay Analysis M/M/1 queuing model has been applied to the wireless BS Dwl = 1/(μwl − λwl) Dwl = 1/(μCi − λwl) [channel i] 12 Performance Modeling A.Handoff Delay Analysis 13 Performance Modeling B. Packet Loss Analysis 14 Performance Modeling C. Signaling Cost Analysis P is the probability that each handoff will occur S is the average size of a signaling message Ha−b is the average number of hops between a and b 15 Performance Modeling C. Signaling Cost Analysis P , the session arrival probability for an internetwork roaming MN between t and t 1 0 η is the network mobility rate 16 2 Performance Modeling C. Signaling Cost Analysis 17 Performance Modeling C. Signaling Cost Analysis 18 Numerical Results and Analysis 19 Numerical Results and Analysis 20 Numerical Results and Analysis 21 Numerical Results and Analysis 22 Numerical Results and Analysis 23 Conclusions and Future Work A novel internetworking architecture for WiMAX and 3G Cellular networks and a detailed evaluation on its performance was presented. Future works will concentrate on developing a common AAA framework and facilitating multiple network accessing. 24