2 research outputs found
PMIPv6-based IP mobility management over regenerative satellite mesh networks
NoNew generation of satellite systems with on-board processing (switching/routing) and support for multiple spot beams will play a key role in the provision of mobile and ubiquitous Internet-based communications. To achieve this `anywhere anytime' communication in a global multi-beam satellite network with many gateways (GWs), the challenges of beam, gateway and satellite handovers faced by the satellite terminals mounted on mobile platforms such as long haul flights, global maritime vessels and continental trains must be adequately dealt with. Network-based localised mobility protocol proxy mobile IPv6 (PMIPv6) where the IP mobility procedures are relocated from the mobile nodes to the network components has been defined by the IETF for terrestrial networks. This paper proposes how the concept of PMIPv6 could be used to support IP mobility in a mesh regenerative multi-beam satellite network. What makes this proposed approach different from that defined by the IETF is the absence of tunnelling throughout the system and the difference in the roles played by the mobility agents
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IP Mobile Multicast over Next Generation Satellite Networks. Design and Evaluation of a Seamless Mobility Framework for IP Multicast Communications over a Multi-beam Geostationary Satellite Network
The inherent broadcast nature of satellites, their global coverage and direct
access to a large number of subscribers give satellites unrivalled advantages in
supporting IP multicast applications. A new generation of satellite systems that
support regenerative on-board processors and multiple spot beam technology
have opened new possibilities of implementing IP multicast communication over
satellites. These new features enable satellites to make efficient use of their
allocated bandwidth resources and provide cost effective network services but
equally, create new challenges for mobile satellite terminals. IP mobility support
in general and IP mobile multicast support in particular on mobile satellite
terminals like the ones mounted on continental flights, maritime vessels, etc.,
still remain big challenges that have received very little attention from the
research community.
Up till now, there are no proposed mechanisms to support IP multicast for
mobile receivers/sources in multi-beam satellite networks in open literature.
This study explores the suitability of IP multicast mobility support schemes
defined for terrestrial networks in a satellite environment and proposes novel
schemes based on the concepts of Home and Remote subscription-based approaches, multiple interface and PMIPv6 protocol. Detailed analysis and
comparison of results obtained from the proposed schemes, Mobile IP (MIP)
Home and Remote subscription-based approaches (for terrestrial networks)
when implemented on a reference multi-beam satellite network are presented.
From these results, the proposed schemes outperform the MIP Home and
Remote subscription-based approaches in terms of gateway handover latency,
number of multicast packets lost and signalling cost over the satellite air
interface