Papers by Dr. Haider AL-Hashimi
VANETs are one of the main next generation wireless networks which are envisaged to be an integra... more VANETs are one of the main next generation wireless networks which are envisaged to be an integration of homogeneous and heterogeneous wireless networks. The inter-networking of these wireless networks with the Internet will provide ubiquitous access to roaming network users. However, a seamless handover mechanism with negligible handover delay is required to maintain active connections during roaming across these networks. Several solutions, mainly involving host-based localized mobility management schemes, have been widely proposed to reduce handover delay among homogeneous and heterogeneous wireless networks. However, the handover delay remains high and unacceptable for delay-sensitive services such as real-time and multimedia services. Moreover, these services will be very common in next generation wireless networks. Unfortunately, these widely proposed host-based localized mobility management schemes involve the vehicle in mobility-related signaling hence effectively increasing the handover delay. Furthermore, these schemes do not properly address the advanced handover scenarios envisaged in future wireless networks. This paper, therefore, proposes a Logical Cross-Layer Optimization Block for VANET vertical mobility management framework utilizing cross-layer design, the IEEE 802.21 future standard, and the recently emerged network-based localized mobility management protocol, Proxy Mobile IPv6, to further reduce handover delay.
Proxy Mobile IPv6 (PMIPv6) was proposed by the Internet Engineering Task Force (IETF) as a new ne... more Proxy Mobile IPv6 (PMIPv6) was proposed by the Internet Engineering Task Force (IETF) as a new network-based mobility protocol which does not require the involvement of MN’s in any form of mobility management. MN can handover relatively faster in PMIPv6 than in host-based mobility protocols (e.g. Mobile IPv6 (MIPv6)) because it actively uses link-layer attachment information which reduces the movement detection time, and eliminates duplicate address detection procedures. However, the current PMIPv6 cannot provide continuous mobility support for MN when roaming between different PMIPv6 domains; we introduce a novel inter-domain PMIPv6 scheme to support seamless handover for vehicle in motion to support continuous and seamless connection while roaming in the new PMIPv6 domain. In this paper we analytically evaluate our novel scheme to support inter-domain mobility for vehicle roaming between two PMIPv6 domains by using Media Independent Handover (MIH) and Fully Qualified Domain Name (FQDN) to support the handover in addition to a continuous connection.
IP mobility management protocols (e.g. host based mobility protocols) incur significant handover ... more IP mobility management protocols (e.g. host based mobility protocols) incur significant handover latency, thus aggravate QoS for end user devices. Proxy Mobile IPv6 (PMIPv6) was proposed by the Internet Engineering Task Force (IETF) as a new network-based mobility protocol to reduce the host based handover latency. However the current PMIPv6 cannot support the vehicles high mobility while the vehicles motion within PMIPv6 domain. In this paper we introduce a novel intra-domain PMIPv6 handover technique based vehicular network using Media Independent Handover (MIH). The novel intra-domain PMIPv6 handover based vehicular network improves the handover performance of PMIPv6 by allowing the new PMIPv6 domain to obtain the MIIS information to estimate whether the handover is necessary or not before the vehicles movement to the second MAG of the new PMIPv6 domain. We evaluate the handover latency and data packet loss of the proposed handover process compared to PMIPv6. The conducted analysis results confirm that the novel handover process yields the reduced handover latency compared to that of PMIPv6 and also prevents data packet loss.
"Proxy Mobile IPv6 (PMIPv6) was standardized by the Internet Engineering Task
Force (IETF) NetL... more "Proxy Mobile IPv6 (PMIPv6) was standardized by the Internet Engineering Task
Force (IETF) NetLMM WG as a Network-based Mobility management protocol.
This protocol allows the Mobile Node (MN) to maintain service connectivity while
moving within the PMIPv6 domain. PMIPv6 mobility management is different from
the Host-based Mobility management protocols; where the mobility signaling
management is controlled by the serving network on behalf of the MN. PMIPv6
introduced new network entities to handle the signaling on behalf of the MN.
However, PMIPv6 protocol can only manage the MN’s reachability within a local
domain (intra-domain). If the MN moves beyond the perimeter of PMIPv6 domain,
the mobility support will be lost. Thus, it is an imperative need to develop PMIPv6
to support interconnecting neighboring domains, which provide MN continuous
support across domains. We propose an inter-domain handover scheme to reduce the
handover latency in vehicular environment. The proposed scheme utilizes the Media
Independent Information Service (MIIS) to help the vehicle store information about
the network that it is attached with. Furthermore, the Local Mobile Anchor (LMA)
will use Fully Qualified Domain Name (FQDN).
Keywords: PMIPv6, MIIS, Mobility Management FQDN, DNS"
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Papers by Dr. Haider AL-Hashimi
Force (IETF) NetLMM WG as a Network-based Mobility management protocol.
This protocol allows the Mobile Node (MN) to maintain service connectivity while
moving within the PMIPv6 domain. PMIPv6 mobility management is different from
the Host-based Mobility management protocols; where the mobility signaling
management is controlled by the serving network on behalf of the MN. PMIPv6
introduced new network entities to handle the signaling on behalf of the MN.
However, PMIPv6 protocol can only manage the MN’s reachability within a local
domain (intra-domain). If the MN moves beyond the perimeter of PMIPv6 domain,
the mobility support will be lost. Thus, it is an imperative need to develop PMIPv6
to support interconnecting neighboring domains, which provide MN continuous
support across domains. We propose an inter-domain handover scheme to reduce the
handover latency in vehicular environment. The proposed scheme utilizes the Media
Independent Information Service (MIIS) to help the vehicle store information about
the network that it is attached with. Furthermore, the Local Mobile Anchor (LMA)
will use Fully Qualified Domain Name (FQDN).
Keywords: PMIPv6, MIIS, Mobility Management FQDN, DNS"