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Abstract: In the doorway of the Mobile IPv6 (MIPv6), it was considered as the standard protocol that support the host mobility. Due to its limitation that does not support the Mobile Routers (MRs), the Internet Engineering Task Force (IETF) has introduced the NEMO Basic Support (NEMO BS) protocol. The Mobile Ad hoc Network (MANET) routing protocol provides the local and the direct communications between two mobile devices within the Nested NEMO (when multiple MRs are connected together). Integrating the MANET and the NEMO (MANEMO) provides the necessary additions to the existing protocols (IPv6, Neighbour Discovery (ND), and NEMO) to support the Nested MRs. It provides a mechanism to select the most suitable path to the Exit Router (ER) as a default in the MANEMO Fringe Stub (MFS). The NCM (NEMO centric MANEMO) protocol is introduced to address the Nested NEMO issues (e.g. pinball problem) by using the MANET routing a protocol (i.e. OLSR), while the MCM (MANET centric MANEMO) protocol is introduced to address the MANET problem (e.g. Internet connectivity). The main aim of this paper is to investigate the current approaches that are introduced to provide the Route Optimization (RO) for the NEMO. It highlights the strengths and the limitations of these approaches. Both the qualitative and the quantitative evolutions of these proposals are hereby presented.

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Abstract- The document analyzes the deployability of approaches for network mobility (NEMO) in wireless vehicular ad hoc networks (VANETs). The vision for VANETs is road safety and commercial comfort applications enabled by shortrange wireless technology. For a potential integrated solution of VANETs and NEMO, referred to as 'VANEMO', we consider a deployable system architecture and define requirements from a holistic view, taking into account economic, functional, and performance aspects. Next, we regard the vehicular network as a conventional mobile ad hoc network (VANET as a MANET), generalize possible solutions and classify them into two comprehensive approaches: MANET-centric and NEMO-centric. We analyze the two approaches with respect to the VANET specific requirements. We conclude that the MANET-centric approach meets the VANET functional and performance requirements better than the NEMO-centric approach. I.