&lt;title&gt;Internet roaming: a WLAN/3G integration system for enterprises&lt;/title&gt;

Luo, Hui; Jiang, Zhimei; Kim, Byoung Jo; Shankar, N. K.; Henry, P.

doi:10.1117/12.480502

Cited by 8 publications

(1 citation statement)

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“…We assume that the MN moves from a cellular UMTS to a WLAN network where an IP1 address was used in the cellular network of the UMTS and an IP2 address is used in the WLAN network. Hence, these four data chunks (TSN1, TSN2, TSN3 and TSN4) are transmitted before the main link is changed from the UMTS-IP1 to the WLAN-IP2 address [10,13]. After the main link is changed, the CN transmits two new data chunks (TSN5 and TSN6) to the new destination of the MN/WLAN, which has much better conditions than the old link of the cellular UMTS.…”

Section: Packet Reordering Problem During a Vhomentioning

confidence: 99%

Enhancement of packet reordering in a mobile stream control transmission protocol for a heterogeneous wireless network vertical handover

Hamza

Noordin

et al. 2010

Journal of High Speed Networks

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Future wireless access networks will be heterogeneous wireless network (HWN) environment which consists of various wireless technologies including universal mobile telecommunications system (UMTS) networks and wireless local area networks (WLAN). They are used together through vertical handover (VHO) to ensure global mobility and service continuity. The mobile stream control transmission protocol (mSCTP) layer supports dynamic association reconfiguration. This protocol allows mSCTP endpoints to dynamically add, change and delete IP addresses when the mobile node (MN) is switched between HWNs. During a mSCTP handover, the endpoints of the mSCTP are required to change the primary link from an old link to a UMTS into a new link to a WLAN. However, due to the disparity between UMTS/WLAN bandwidth, a packet reordering problem will occur when the MN of the mSCTP leaves to a new network. This packet reordering problem can then causes additional drawbacks such as impossibility of growing an mSCTP congestion window, unnecessary fast retransmissions, actual packet losses, and reduced efficiency of the receiving mSCTP. In this paper, we propose a packet reordering model (PRM) that is inserted inside the MN, and works as a special buffer of a large capacity with one input and one output port to receive all transmission sequence numbers (TSNs). It then forwards all incoming data chunks to the MN/WLAN networks after the VHO. The performance of the system is simulated and analyzed using NS-2 simulation tool. The simulation results show that the suggested model enhances the performance throughput and the congestion window of the conventional mSCTP through VHO by handling the packet reordering problem. In other words, the average performance throughout of the proposed PRM scheme is 181.48 Kbps or 16% increment compared to conventional mSCTP at 165.54 Kbps.

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Section: Packet Reordering Problem During a Vhomentioning

confidence: 99%

Enhancement of packet reordering in a mobile stream control transmission protocol for a heterogeneous wireless network vertical handover

Hamza

Noordin

et al. 2010

Journal of High Speed Networks

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Internetworking of Heterogeneous Wireless Networks

Zeadally

Siddiqui

2007

Handbook of Computer Networks

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Vertical handover policies for common radio resource management

Lincke

2005

Int. J. Commun. Syst.

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SUMMARYThe 3G and Beyond 3G wireless networks introduce new technologies, and in many cases, new frequency bands. Integrated hierarchical network architectural studies suggest that by using a Common Radio Resource Manager to engineer traffic across these component networks, operators can achieve increased efficiency and flexibility in supporting changing traffic demands. This study demonstrates how vertical handovers can be used to optimize network performance, by adaptively rearranging traffic across network boundaries. We survey policy implementations that consider which services/sessions shall move, where they shall move, when they shall move, and whether they shall return.

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<title>Internet roaming: a WLAN/3G integration system for enterprises</title>

Cited by 8 publications

References 0 publications

Enhancement of packet reordering in a mobile stream control transmission protocol for a heterogeneous wireless network vertical handover

Enhancement of packet reordering in a mobile stream control transmission protocol for a heterogeneous wireless network vertical handover

Internetworking of Heterogeneous Wireless Networks

Vertical handover policies for common radio resource management

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