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IP over 802.16 Problem Statement Update draft-jee-16ng-ps-goals

IP over 802.16 Problem Statement Update draft-jee-16ng-ps-goals. Junghoon Jee, ETRI. Maximilian Riegel Syam Madanapalli Gabriel Montenegro Soohong Daniel Park Jeff Mandin. Siemens Samsung Microsoft Samsung Runcom. Terminology. SS (Subscriber Station)

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IP over 802.16 Problem Statement Update draft-jee-16ng-ps-goals

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  1. IP over 802.16 Problem Statement Updatedraft-jee-16ng-ps-goals Junghoon Jee, ETRI Maximilian Riegel Syam Madanapalli Gabriel Montenegro Soohong Daniel Park Jeff Mandin Siemens Samsung Microsoft Samsung Runcom 16ng WG, IETF66

  2. Terminology • SS (Subscriber Station) • An end-user equipment that provides connectivity to IEEE 802.16 based network. • BS (Base Station) • A layer 2 entity providing connectivity, management, and control of the subscriber station. • IP Gateway • A layer 3 entity that acts as a first-hop default router for SSs. • IP Subnet • Topological area that uses the same address prefix where that prefix is not further subdivided except into individual addresses. • Link • Topological area bounded by routers which decrement the IPv4 TTL or IPv6 Hop Limit when forwarding the packet. • Transport Connection • IEEE 802.16’s MAC connection between a SS and BS with a specific QoS attributes. Each transport connection is identified by an unique identifier called connection identifier. 16ng WG, IETF66

  3. IEEE 802.16 PMP Link Layer • No native bi-directional multicast support • No direct communication between MS/SSs • Connection-oriented MAC • Connections always between MS/SS and BS • MAC PDUs are transferred according to CID • 48-bit MAC addresses are not used for transmission • Ethernet CS does not provide Ethernet functionality over the air • Specifies only encapsulation and classification of Ethernet Frames for transmission over CIDs 16ng WG, IETF66

  4. 16ng Problem Statement • Distinctive feature of 802.16 link • No native bi-directional multicast support • No direct communication between SSs • Connections always between SS and BS • 48-bit MAC addresses are not used for transmission • Ethernet CS does not provide the Ethernet-like functionality. • Air resource consumption from the previous multicast/broadcast based IPv6 NDP and IPv4 ARP • Power consumption caused by waking up of dormant terminals • No single mandatory CS on the SS. • Multilink subnet issues when using IP CS for Ethernet-like deployment model. 16ng WG, IETF66

  5. 16ng Goals • Work on Ethernet CS should provide interoperability with existing devices that employ Ethernet . • Define an enhanced IPv6 NDP under considering scarce air resources. • Define enhanced IPv4 ARP under considering scarce air resources. • Reduce the power consumption caused by waking up of dormant terminals • Resolve the multilink subnet issues when using IP CS for Ethernet-like deployment model. • Consider the applicability of the previous security works like SEND. • Do not introduce any new security threats. 16ng WG, IETF66

  6. 16ng Goals (2) • Define the way to negotiate the used convergence sublayers. • Define the feasible IP subnet models depending on the CS used. 16ng WG, IETF66

  7. 16ng Network Models • Baseline is how to constitute an IP subnet over IEEE 802.16 PMP links. • Ethernet-like deployment model • IP subnet consists of one IP Gateway and multiple SSs. • Both IP CS and Ethernet CS are applicable. • IP CS: Need to resolve the multilink subnet issues. • Ethernet CS: Based on the bridging function at BS. • 3G-like deployment model • IP Gateway assigns separate IP subnet prefixes for each SS. • IP CS seems more applicable. • BS architectural issue • Physical relationship between BS and IP Gateway. • Resolution: Informational texts on deployment model I-D. 16ng WG, IETF66

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