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IEEE Wireless Communications, 2008. Mobility Management for All-IP Mobile Networks: Mobile IPv6 vs. Proxy Mobile IPv6.
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IEEE Wireless Communications, 2008 Mobility Management for All-IP Mobile Networks: Mobile IPv6 vs. Proxy Mobile IPv6 Ki-Sik Kong; Wonjun Lee; Korea UniversityYoun-Hee Han;Korea university of Technology and EducationMyung-Ki Shin;Electronics and Telecommunications Research Institute (ETRI)HeungRyeol YouKorea Telecommunication (KT)
Outline • Introduction • Why Network-Based Mobility Management • Network-Based Mobility Management: PMIPv6 • Qualitative Analysis • Quantitative Analysis • Concluding Remarks
Introduction • “anywhere, anytime, and any way” high-speed Internet access • IEEE 802.16d/e, WCDMA • IETF, 3GPP, ITU-T • All-IP mobile networks • Expected to combine the Internet and telecommunication networks • Mobility management • Location Management • Handover Management
Introduction (cont.) • Mobile IPv4, Mobile IPv6 • Handover latency, packet loss, and signaling overhead • slowly deployed in real implementations • “the handover latencies associated with MIPv4/v6 do not provide the quality of service (QoS) guarantees required for real-time applications” • Proxy Mobile IPv6 (PMIPv6) • the IETF NETLMM WG • Network-based • expected to expedite the real deployment of IP mobility management
Global Mobility Management Protocol [$] • A mobility protocol used by the mobile node to change the global, end-to-end routing of packets when movement causes a topology change. • Localized Mobility Management [$] • Any protocol that maintains the IP connectivity and reachability of a mobile node when the mobile node moves • signaling is confined to an access network. [$] J. Kempf (DoCoMo), Problem Statement for Network-Based Localized Mobility Management (NETLMM), April 2007, IETF RFC 4830.
Why Network-Based Mobility Management? • Mobile IPv4/6, hierarchical Mobile IPv6 (HMIPv6), fast handover for Mobile IPv6 (FMIPv6) • Require protocol stack modification of the MN • Increased complexity • Network-based mobility management approach • the serving network handles the mobility management on behalf of the MN • the MN is not required to participate in any mobility-related signaling
salient features and advantages of Proxy Mobile IPv6 (PMIPv6) • Deployment perspective • does not require any modification of MNs • expected to accelerate the practical deployment • multiple global mobility management protocols can be supported • Performance perspective • Host-based approach • mobility related signaling and tunneled messages exchanged on the wireless link • Wireless channel access delay and wireless transmission delay • Network-based network layer approach • the serving network controls the mobility management on behalf of the MN • No additional signal on the wireless link
Network service provider perspective • network-based mobility management • enhance manageability and flexibility • enabling network service providers to control network traffic • Easily be expected from legacy cellular system, such as IS-41, GSM • Similar to GPRS • PMIPv6 could be used in any IP-based network
Network-Based Mobility Management: PMIPv6 • Primary features [4][8] • Support for unmodified MNs • Support for IPv4 and IPv6 • Efficient use of wireless resources • Link technology agnostic • Handover performance improvement • extends MIPv6 signaling and reuses many concepts • Support an MN in a topologically localized domain [4] J. Kempf, “Problem Statement for Network-Based Localized Mobility Management (NETLMM),” IETF RFC 4830, Apr. 2007. [8] J. Kempf, “Goals for Network-Based Localized Mobility Management (NETLMM),” IETF RFC 4831, Apr. 2007.
Overview of PMIPv6 access authentication
LMA address, supported address configuration mode, and so on from the policy store
PBU/PBA [*] [*] S. Gundavelli, K. Leung, V. Devarapalli, K. Chowdhury and B. Patil, Proxy Mobile IPv6, Aug. 2008, IETF RFC 5213.
Outline • Introduction • Why Network-Based Mobility Management • Network-Based Mobility Management: PMIPv6 • Qualitative Analysis • Quantitative Analysis • Concluding Remarks
typically a shared tunnel
Outline • Introduction • Why Network-Based Mobility Management • Network-Based Mobility Management: PMIPv6 • Qualitative Analysis • Quantitative Analysis • Concluding Remarks
handover latency • the time that elapses between the moment the layer 2 handover completes and the moment the MN can receive the first data packet after moving to the new point of attachment. • the movement detection delay (TMD), • address configuration delay (TDAD), • the delay involved in performing the AAA procedure (TAAA), and • location registration delay (TREG)
TMD = (MinRtrAdvInterval + MaxRtrAdvInterval)/4 • TDAD = RetransTimer × DupAddrDetectTransmits • TAAA = 2 × 2ta = 4ta • TREGMIPv6 = 2(tmr+ tra + tah) + 2(tmr + tra + tac) + 2(tmr + tra + tah+ thc) • TREGHMIPv6 = 2(tmr + tra + tam) • TREGPMIPv6 = 2tam • DHOMIPv6 = TMD + TDAD + TAAA + TREGMIPv6 • DHOHMIPv6 = TMD + TDAD + TAAA + TREGHMIPv6 • DHOPMIPv6= TAAA + TREGPMIPv6 + tmr + tra Reg. to HA Reg. to CN RR. procedure to CN Reg. to MAP Reg. to LMA
Impact of Delay between MN and CN(tmr+tra+tac) reg. to CN needed
Impact of Movement Detection Delay(TMD) No TMD needed
Conclusion • first to provide qualitative and quantitative analyses of MIPv6 and PMIPv6 • demonstrate the superiority of PMIPv6 • PMIPv6 could be considered a promising compromise between telecommunications and Internet communities. • reflects telecommunication operators’ favor, enabling them to manage and control their networks more efficiently • interactions between MIPv6 and PMIPv6 is possible • Future research • explore cross layering • e.g., PMIPv6 over IEEE 802.11 or 802.16e networks • route optimization • fast handover
comments • Host-based vs. Network-based mobility management • Mobile IPv6 HiMIPv6, FMIPv6 Proxy Mobile IPv6 • Handover performance of PMIPv6 • QoS is easy to be achieved • Multiple interface • Soft handover, fault tolerance, load balancing • seamless handover • Proxy Mobile IPv6 + NEMO