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The limitation in current NEMO scenario -Problem Statement

This document outlines key limitations within the current NEMO (Network Mobility) framework, particularly focusing on Mobile Router (MR) loop issues and entry point selection. The MR can inadvertently create route loops, necessitating better distinctions between MRs. Additionally, mobile entities need to select stable entry points to streamline internet access. Suggested solutions include enhanced learning capabilities for mobile entities and improvements in router discovery messages. The discussion also touches on PMIPv6-related challenges and strategic recommendations for future implementation.

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The limitation in current NEMO scenario -Problem Statement

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  1. The limitation in current NEMO scenario -Problem Statement draft-zhao-nemo-limitations-ps-00.txt John.zhao(Huawei technology shanghai R&D) Ke lin (Shanghai jiao tong university) Wen tao zhong (Shanghai jiao tong university) 2007-12-01

  2. Index • Problems and solutions • MR loop • Entry point selection • PMIP related • Conclusions and suggestion • Future plan • Next step • References

  3. Problem 1 ---- MR loop Problem: The MR may establish the route loop each other. Suggestion: We need to distinguish the MR.

  4. Problem 2 ---- entry point selection Problem: The mobile entities(MR or MN) need to select a more stable entry point as the selection to visit the internet. Suggestion: Let the mobile learn some more information about the upper level router.

  5. Dst=LFN’s prefix + node ID CN’s Addr Src Dst Payload Dst=LFN’s prefix + node ID Dst=LFN’s prefix + node ID Src Src Dst Dst Src Src Dst Dst Payload Payload CN’s Addr CN’s Addr LMA’s Addr MAG’s Addr MR’s CoA MR’s HoA Dst=LFN’s prefix + node ID Src Dst Payload CN’s Addr Scenarios of PMIP related • The network is PMIPv6 enabled. (MIPv4 is similar) • MR bootstrapping in this PMIPv6 network. • MR didn’t run the NEMO protocol(RFC3963) and network use PMIP to management its mobility. • We use the root MR as the example, and others is similar.But if nested MR occurred, RO is suggested to promote the efficiency. ? LMA/HA needs the binding info for the LFN’s prefix as the following: MRIDMR’s HoAMR’s CoALFN’s Prefix

  6. Problems and requirements of PMIP related • 1)How to forward the packets destinated to the nodes under the MR? • MAG send the PBU included with the LFN’s prefix to LMA/HA. • 2)Where to find the LFN’s prefix of that MR? • Policy server • Getting it/them from that MR • 3)When does the MAG send the PBU? • When the MR enter into the PMIPv6 domain. • 4)How does the MAG know this is a MR but not a MN? • Policy server • Getting it/them from that MR

  7. solution PBU(with LFN’s prefix) Really? I need help you binding your LFN’s prefix in LMA/HA. This is a MR (Optional includeing with the LFN’s prefix)

  8. Conclusions and suggestion • Conclusions: • Mobile router is difference to mobile node in pmip scenario and need to be learnt by pmip domain; • If can mobile router know each other and the distinguish with those fixed routers, it maybe useful for the best route path selection and the access to the internet. • Suggestion: • We suggest that we can extend current router discovery messages to achieve these goals.

  9. Next step • Agree to these problems? • Agree to these solutions? • We need to provide this details as above? • If true, if this draft can be accepted in mext? • Other suggestions?

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