IP Deployment over IEEE 802.16 Networks 2007.12.4 Ji Hoon Lee (jhlee@mmlab.snu.ac.kr)

Motivation Show how IP is deployed in real 802.16 networks Deployment scenarios Network architecture Functional decomposition Deployment considerations CS type and link model selection Other issues (addressing, IP routing/forwarding, IP QoS, multicast/broadcast, mobility, security, applications,…)

Deployment Scenarios Wireless Access Service Interworking with Fixed: WiMAX Mobile: Mobile WiMAX and WiBro Interworking with DSL networks 3G cellular networks

Real Examples Wireless Mobile Access IP deployment in WiBro networks Appendix: Multicast Broadcast Service IP multicast testbed for multimedia services

WiBro Networks First WiBro Networks Next WiBro Networks ACR has some 802.16 MAC-related functions. WiMAX Profile A (obsoleted) IPv4 CS Commercially deployed Next WiBro Networks Provide p-t-p connections WiMAX Profile C IPv4/IPv6 CS Start deployment in 2008.

Current WiBro Network Supports: Does NOT support: IPv4 CS IP unicast best-efforts services Dynamic IPv4 address assignment (DHCP) Link-layer Mobility Authentication Does NOT support: ETH/IPv6 CS Direct peer-to-peer communication IP multicast/broadcast services IP QoS IP Mobility Traffic Encryption

WiBro Link Model IPv4 CS Alternatives Prefer shared-prefix model Multi-link subnet issues (RFC4903) Alternatives IPv6 Ethernet-like? What else in IPv4?

WiBro IP Packet Forwarding

Summary IP Deployment over IEEE 802.16 Networks Initial discussion IP deployment scenarios Deployment considerations Addressing, Routing/forwarding, IP QoS, IP multicast/broadcast, Mobility, Security,… Multiple CS

Appendix: IP Multicast Testbed over IEEE 802.16 Networks Goal Implement IP-based realtime multimedia service over IEEE 802.16 networks Assumptions: very popular contents Relatively a large amount of data to be distributed Not designed to support generic IP multicast and broadcast traffics. Testbed Realtime streaming service over IP over IEEE 802.16 MBS. Mobility utilizing MBS Zones Macro diversity Testbed configuration

Appendix: Multimedia service over IP over IEEE 802.16 Membership management based on IGMP/MLD No modification on SS Query/report overheads Service cost decreases as the number of users increases. Illustration of IP multimedia service over IEEE 802.16 MBS