Network Design
Our assumption • Primary target: Mobile Router Scenarios • NEMO Basic Support only • NEMO Basic Support and PMIPv6 support on WiMAX • MR uses the HoA assigned by LMA as CoA • Optional target: Mobile Node Scenarios • Mobile IPv6 • Proxy Mobile IPv6 • Mobile IPv6 and Proxy Mobile IPv6 • The similar techniques developed for the primary target may be applied to this scenario as well • Out of scope • Regular IPv6 node • Regular IPv6 router • Mobile Router support by Proxy Mobile IPv6 • PMIPv6 does not support mobile network
Primary: NEMO over WiMAX for IPTV
IPTV Service Platform ASN-GW ASN-GW MR MR CSN ASN-GW NEMO Basic Support only Multicast Stream Multicast Source IGMP Report HA: Home Agent MR: Mobile Router PIM IGMP IGMP Proxy HA ASN
IPTV Service Platform MAG MAG MAG MR MR LMA CSN NEMO Basic Support and P-MIPv6 support on WiMAX Multicast Source Multicast Stream LMA: Localized Mobility Anchor MAG: Mobility Access Gateway HA: Home Agent MR: Mobile Router IGMP Report PIM IGMP IGMP Proxy IGMP Proxy IGMP Proxy HA ASN
Optional: MIP6 over WiMAX for IPTV
IPTV Service Platform ASN-GW ASN-GW ASN-GW MN MN CSN Mobile IPv6 Multicast Stream Multicast Source IGMP Report HA: Home Agent MN: Mobile Node PIM IGMP HA ASN
IPTV Service Platform MAG MAG MAG MN MN LMA CSN Proxy Mobile IPv6 Multicast Stream Multicast Source IGMP Report LMA: Localized Mobility Anchor MAG: Mobility Access Gateway MN: Mobile Node PIM IGMP IGMP Proxy ASN
IPTV Service Platform MAG MAG MAG MN MN LMA CSN Mobile IPv6 and Proxy Mobile IPv6 Multicast Source Multicast Stream LMA: Localized Mobility Anchor MAG: Mobility Access Gateway HA: Home Agent MN: Mobile Node IGMP Report PIM IGMP IGMP Proxy IGMP Proxy HA ASN
Out of Scope
IPTV Service Platform ASN-GW ASN-GW ASN-GW node node CSN IPv6 Node Multicast Source Multicast Stream MR: Mobile Router IGMP Report PIM IGMP IGMP Proxy ASN
IPTV Service Platform ASN-GW ASN-GW ASN-GW Router Router CSN IPv6 Router Multicast Source Multicast Stream LMA: Localized Mobility Anchor MAG: Mobility Access Gateway MN: Mobile Node IGMP Report PIM IGMP ASN
IPTV Service Platform MAG MAG MAG MR MR LMA CSN Proxy - NEMO?? (really?) Multicast Stream Multicast Source IGMP Report LMA: Localized Mobility Anchor MAG: Mobility Access Gateway MR: Mobile Router PIM IGMP IGMP Proxy IGMP Proxy ASN
Research Plan
Research Areas • We address three areas and work on IPTV over WiMAX for these three areas. Note that we don't imply that we will have a deliberative item per area. This is just our formation. We may deliver three items from one of area depending on discussions with Huawei. • Network: Mobility and Multicast • Layered Multicast for IP multicast/MCBCS • Quality adaptation for IPTV on WiMAX
1. Network Area
Research Topics • The multicast states transfer when MN is roaming. We consider the PMIP case and assumes MAG is available in the ASN. There are two possibilities here, 1) State trasfer from LMA to MAG during the binding registration, 2) State transfer from old MAG to new MAG. The 2) approach has several problems such as new MAG discovery and security association between MAGs,etc. The assumed states are … • Analysis on multi-IGMP Proxies • PIM vs IGMP proxy • network design • IGMP tuned for WiMAX • Query interval • Limiting leave query • proxy has states or not?
Research Topics • About MCBCS Support • We believe whether MCBCS is used in wireless path is nothing to do with the IP network design and IP multicast design unless we consider layered-multicast (see the research area2). • L3 is nothing to do with the L2 transport method. From L3 point of view, either P2P-unicast or MCBCS is same. • If Huawei is interested in, we can investigate the Multicast ID mapping to IP flow. Only our concern is that many people has already worked on this topic (ex. 16ng).
2. Layered Multicast Area
Layered multicast foradaptive modulation • Problem statement • With WiMAX multicast, multicast data transmission rate depends on the link capacity of the node whose link quality is worst • Nodes with good wireless connection cannot get high-quality multicast data • Combination of layered multicast and adaptive modulation • Nodes come to be able to receive the multicast data with proper quality depends on their wireless connection quality • Key Technolgies • Layered multicast • Network resource aware multicast data transmission method • Multicast group management • Dynamic IP multicast group management based on the nodes’ current physical layer modulation • Mapping between an IP multicast group to a modulation based WiMAX multicast group
Layered Multicast • Hierarchical data structure • Data are divided into several “Layer” • Layer is multimedia data unit • Video quality control selecting the number of accepting layers • Layer • Base Layer • Base Multimedia data • Enhanced Layer • Quality enhancement data • Multicast tree structure • Data are deliverd with IP multicast • Senders provide maximum quality data • Intermediate nodes decrease layers to send adapting to the network resource
64QAM Capable Group:FEC0::2:1 16QAM Capable Group:FEC0::2:2 QPSK Capable Group:FEC0::2:3 BPSK Capable Group:FEC0::2:4 64QAM QPSK 16QAM Modulation basedmulticast group management BPSK
BPSK QPSK 16QAM 64QAM Base Layer Enhance Layer 1 Enhance Layer 2 Enhance Layer 3 Layered multicastfor adaptive modulation
3. Quality adaptation for IPTV on WiMAX
Our assumption and primary target • Network Scenario: • NEMO Basic Support only • NEMO Basic Support and PMIPv6 support on wimax • Target: • focusing on “multicast over unicast” • Providing the stable IPTV broadcast quality • help reducing quality losses • Reduce the time in which the quality is kept bad • Adaptation range for keeping quality • Between BS and Mobile router • The upper range could be based on QoS (L3, L2)
IPTV Service Platform MAG MAG MAG MR MR LMA CSN Network Scenario(1/2) Multicast Source Multicast Stream LMA: Localized Mobility Anchor MAG: Mobility Access Gateway HA: Home Agent MR: Mobile Router IGMP Report PIM IGMP IGMP Proxy IGMP Proxy IGMP Proxy HA ASN Adaptation range
IPTV Service Platform ASN-GW ASN-GW MR MR CSN ASN-GW Network Scenario(2/2) Multicast Stream Multicast Source IGMP Report HA: Home Agent MR: Mobile Router PIM IGMP IGMP Proxy Adaptation range HA ASN
MR The overview about adaptation adaptation Our focus point Adaptation ASN CSN ・ASNGW, ・MAG, ・Original server Multicast flow AR BS Proxy adaptation adaptation QoS based on each connection 802.16e MAC Layer wireless link control QoS scheduling ＋proposed adaptation method
MPEG1/2 MPEG2-TS H.264/MPEG4 Middleware Adaptation model IPTV Video Upper Layer Audio Encryption Decryption Authentication Reducing consumption bandwidth (recompression/Rate control) Dynamic FEC Multicast Network Layer Unicast DataLink Layer Ethernet ATM Service Specific Convergence Sublayer MAC Common Part Sublayer 802.16e Physical Layer OFDM/OFDMA
Research Plan • Take account of wimax characteristic • to use FEC and Rate Control effectively • Video format • The amount of receive buffer • Parameter • Received signal strength • BER • PER • The number of multicast channel (join,leave) • Middleware • To get the wireless link state for adaptation • MR, ASNGW, BS… • Policy management • Collaboration within other flow @ Wimax • Encryption/decryption and authentication (our scope?) • Resource management for high priority flow
